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Tian</title> <meta name="description" content="Search results for: Lixin Tian"> <meta name="keywords" content="Lixin Tian"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="Lixin Tian" name="q" aria-label="Search"> <button class="btn btn-light my-2 my-sm-0" type="submit"><i class="fas fa-search"></i></button> </form> </div> <div class="collapse navbar-collapse mt-1" id="navbarMenu"> <ul class="navbar-nav ml-auto align-items-center" id="mainNavMenu"> <li class="nav-item"> <a class="nav-link" href="https://waset.org/conferences" title="Conferences in 2024/2025/2026">Conferences</a> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/disciplines" title="Disciplines">Disciplines</a> </li> <li 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Lixin Tian"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 100</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Lixin Tian</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">100</span> Randomized Trial of Tian Jiu Therapy in San Fu Days for Patients with Chronic Asthma</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Libing%20Zhu">Libing Zhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Waichung%20Chen"> Waichung Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Kwaicing%20Lo"> Kwaicing Lo</a>, <a href="https://publications.waset.org/abstracts/search?q=Lei%20Li"> Lei Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Tian Jiu Therapy (a medicinal vesiculation therapy according to traditional Chinese medicine theory) in San Fu Days (the three hottest days in a year is calculated by the Chinese ancient calendar) is widely used by patients with chronic asthma in China although from modern medicine perspective there is insufficient evidence of its effectiveness and safety issues. We investigated the efficacy and safety of Tian Jiu Therapy compared with placebo in patients with chronic asthma. Methods: Patients with chronic asthma were randomly assigned to Tian Jiu treatment group (n=165), placebo control group (n=158). Registered Chinese Medicine practitioners, in Orthopedics-Traumatology, Acupuncture, and Tui-na Clinical Centre for Teaching and Research, School of Chinese Medicine, The University of Hong Kong, administered Tian Jiu Therapy and placebo treatment in 3 times over 2 months. Patients completed questionnaires and lung function test before treatment and after treatment, 3, 6, 9, and 11 months, respectively. The primary outcome was the no of asthma-related sub-healthy symptoms and the percentage of patients with twenty-three symptoms. Results: 451 patients were recruited totally, 111 patients refused or did not participate according the appointment time and 17 did not meet the inclusion criteria. Consequently, 323 of eligible patients were enrolled. There was nothing difference between Tian Jiu Therapy group and placebo control group at the end of all treatments neither primary nor secondary outcomes. While Tian Jiu Therapy as compared with placebo significantly reduced the percentage of participants who are susceptible waken up by asthma symptoms from 27% to 14% at 2nd follow-up (P < 0.05). Similarly, Tian Jiu Therapy significantly reduced the proportion of participants who had the symptom of running nose and sneezing before onset from 18% to 8% at 2nd follow-up (P < 0.05). Additionally, Tian Jiu Therapy significantly reduced the level of asthma, the proportion of participants who don’t need to processed during asthma attack increased from 6% to 15% at 1st follow-up and 0% to 7% at 3rd follow-up (P < 0.05). Improvements also occurred with Tian Jiu Therapy group, it reduced the proportion of participants who were spontaneously sweating at 3rd follow up and diarrhea after intake of oily food at 4th follow-up (P < 0.05). Conclusion: When added to a regimen of foundational therapy for chronic asthma participants, Tian Jiu Therapy further reduced the need for medications to control asthma, improved the quality of participants’ life, and significantly reduced the level of asthma. What is more, this benefit seems to have an accumulative effect over time was in accordance with the TCM theory of 'winter disease is being cured in summer'. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=asthma" title="asthma">asthma</a>, <a href="https://publications.waset.org/abstracts/search?q=Tian%20Jiu%20Therapy" title=" Tian Jiu Therapy"> Tian Jiu Therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=San%20Fu%20Days" title=" San Fu Days"> San Fu Days</a>, <a href="https://publications.waset.org/abstracts/search?q=triaditional%20Chinese%20medicine" title=" triaditional Chinese medicine"> triaditional Chinese medicine</a>, <a href="https://publications.waset.org/abstracts/search?q=clinical%20trial" title=" clinical trial"> clinical trial</a> </p> <a href="https://publications.waset.org/abstracts/8837/randomized-trial-of-tian-jiu-therapy-in-san-fu-days-for-patients-with-chronic-asthma" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8837.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">314</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">99</span> The Design of Multiple Detection Parallel Combined Spread Spectrum Communication System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lixin%20Tian">Lixin Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Xue"> Wei Xue</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Many jobs in society go underground, such as mine mining, tunnel construction and subways, which are vital to the development of society. Once accidents occur in these places, the interruption of traditional wired communication is not conducive to the development of rescue work. In order to realize the positioning, early warning and command functions of underground personnel and improve rescue efficiency, it is necessary to develop and design an emergency ground communication system. It is easy to be subjected to narrowband interference when performing conventional underground communication. Spreading communication can be used for this problem. However, general spread spectrum methods such as direct spread communication are inefficient, so it is proposed to use parallel combined spread spectrum (PCSS) communication to improve efficiency. The PCSS communication not only has the anti-interference ability and the good concealment of the traditional spread spectrum system, but also has a relatively high frequency band utilization rate and a strong information transmission capability. So, this technology has been widely used in practice. This paper presents a PCSS communication model-multiple detection parallel combined spread spectrum (MDPCSS) communication system. In this paper, the principle of MDPCSS communication system is described, that is, the sequence at the transmitting end is processed in blocks and cyclically shifted to facilitate multiple detection at the receiving end. The block diagrams of the transmitter and receiver of the MDPCSS communication system are introduced. At the same time, the calculation formula of the system bit error rate (BER) is introduced, and the simulation and analysis of the BER of the system are completed. By comparing with the common parallel PCSS communication, we can draw a conclusion that it is indeed possible to reduce the BER and improve the system performance. Furthermore, the influence of different pseudo-code lengths selected on the system BER is simulated and analyzed, and the conclusion is that the larger the pseudo-code length is, the smaller the system error rate is. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cyclic%20shift" title="cyclic shift">cyclic shift</a>, <a href="https://publications.waset.org/abstracts/search?q=multiple%20detection" title=" multiple detection"> multiple detection</a>, <a href="https://publications.waset.org/abstracts/search?q=parallel%20combined%20spread%20spectrum" title=" parallel combined spread spectrum"> parallel combined spread spectrum</a>, <a href="https://publications.waset.org/abstracts/search?q=PN%20code" title=" PN code"> PN code</a> </p> <a href="https://publications.waset.org/abstracts/104396/the-design-of-multiple-detection-parallel-combined-spread-spectrum-communication-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104396.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">137</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">98</span> An Autopilot System for Static Zone Detection</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yanchun%20Zuo">Yanchun Zuo</a>, <a href="https://publications.waset.org/abstracts/search?q=Yingao%20Liu"> Yingao Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Liu"> Wei Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Le%20Yu"> Le Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Run%20Huang"> Run Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Lixin%20Guo"> Lixin Guo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electric field detection is important in many application scenarios. The traditional strategy is measuring the electric field with a man walking around in the area under test. This strategy cannot provide a satisfactory measurement accuracy. To solve the mentioned problem, an autopilot measurement system is divided. A mini-car is produced, which can travel in the area under test according to respect to the program within the CPU. The electric field measurement platform (EFMP) carries a central computer, two horn antennas, and a vector network analyzer. The mini-car stop at the sampling points according to the preset. When the car stops, the EFMP probes the electric field and stores data on the hard disk. After all the sampling points are traversed, an electric field map can be plotted. The proposed system can give an accurate field distribution description of the chamber. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=autopilot%20mini-car%20measurement%20system" title="autopilot mini-car measurement system">autopilot mini-car measurement system</a>, <a href="https://publications.waset.org/abstracts/search?q=electric%20field%20detection" title=" electric field detection"> electric field detection</a>, <a href="https://publications.waset.org/abstracts/search?q=field%20map" title=" field map"> field map</a>, <a href="https://publications.waset.org/abstracts/search?q=static%20zone%20measurement" title=" static zone measurement"> static zone measurement</a> </p> <a href="https://publications.waset.org/abstracts/153711/an-autopilot-system-for-static-zone-detection" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/153711.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">101</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">97</span> TNF Receptor-Associated Factor 6 (TRAF6) Mediating the Angiotensin-Induced Non-Canonical TGFβ Pathway Activation and Differentiation of c-kit+ Cardiac Stem Cells</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Qing%20Cao">Qing Cao</a>, <a href="https://publications.waset.org/abstracts/search?q=Fei%20Wang"> Fei Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Qiang%20Wang"> Yu-Qiang Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Li-Ya%20Huang"> Li-Ya Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Tian-Tian%20Sang"> Tian-Tian Sang</a>, <a href="https://publications.waset.org/abstracts/search?q=Shu-Yan%20Chen"> Shu-Yan Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aims: TNF Receptor-Associated Factor 6 (TRAF6) acts as a multifunctional regulator of the Transforming Growth Factor (TGF)-β signaling pathway, and mediates Smad-independent JNK and p38 activation via TGF-β. This study was performed to test the hypothesis that TGF-β/TRAF6 is essential for angiotensin-II (Ang II)-induced differentiation of rat c-kit+ Cardiac Stem Cells (CSCs). Methods and Results: c-kit+ CSCs were isolated from neonatal Sprague Dawley (SD) rats, and their c-kit status was confirmed with immunofluorescence staining. A TGF-β type I receptor inhibitor (SB431542) or the small interfering RNA (siRNA)-mediated knockdown of TRAF6 were used to investigate the role of TRAF6 in TGF-β signaling. Rescue of TRAF6 siRNA transfected cells with a 3'UTR deleted siRNA insensitive construct was conducted to rule out the off target effects of the siRNA. TRAF6 dominant negative (TRAF6DN) vector was constructed and used to infect c-kit+ CSCs, and western blotting was used to assess the expression of TRAF6, JNK, p38, cardiac-specific proteins, and Wnt signaling proteins. Physical interactions between TRAF6 and TGFβ receptors were studied by coimmunoprecipitation. Cardiac differentiation was suppressed in the absence of TRAF6. Forced expression of TRAF6 enhanced the expression of TGF-β-activated kinase1 (TAK1), and inhibited Wnt signaling. Furthermore, TRAF6 increased the expression of cardiac-specific proteins (cTnT and Cx-43) but inhibited the expression of Wnt3a. Conclusions: Our data suggest that TRAF6 plays an important role in Ang II induced differentiation of c-kit+ CSCs via the non-canonical signaling pathway. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cardiac%20stem%20cells" title="cardiac stem cells">cardiac stem cells</a>, <a href="https://publications.waset.org/abstracts/search?q=differentiation" title=" differentiation"> differentiation</a>, <a href="https://publications.waset.org/abstracts/search?q=TGF-%CE%B2" title=" TGF-β"> TGF-β</a>, <a href="https://publications.waset.org/abstracts/search?q=TRAF6" title=" TRAF6"> TRAF6</a>, <a href="https://publications.waset.org/abstracts/search?q=ubiquitination" title=" ubiquitination"> ubiquitination</a>, <a href="https://publications.waset.org/abstracts/search?q=Wnt" title=" Wnt"> Wnt</a> </p> <a href="https://publications.waset.org/abstracts/10048/tnf-receptor-associated-factor-6-traf6-mediating-the-angiotensin-induced-non-canonical-tgfv-pathway-activation-and-differentiation-of-c-kit-cardiac-stem-cells" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10048.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">401</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">96</span> Formal Verification of Cache System Using a Novel Cache Memory Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Guowei%20Hou">Guowei Hou</a>, <a href="https://publications.waset.org/abstracts/search?q=Lixin%20Yu"> Lixin Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Zhuang"> Wei Zhuang</a>, <a href="https://publications.waset.org/abstracts/search?q=Hui%20Qin"> Hui Qin</a>, <a href="https://publications.waset.org/abstracts/search?q=Xue%20Yang"> Xue Yang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Formal verification is proposed to ensure the correctness of the design and make functional verification more efficient. As cache plays a vital role in the design of System on Chip (SoC), and cache with Memory Management Unit (MMU) and cache memory unit makes the state space too large for simulation to verify, then a formal verification is presented for such system design. In the paper, a formal model checking verification flow is suggested and a new cache memory model which is called “exhaustive search model” is proposed. Instead of using large size ram to denote the whole cache memory, exhaustive search model employs just two cache blocks. For cache system contains data cache (Dcache) and instruction cache (Icache), Dcache memory model and Icache memory model are established separately using the same mechanism. At last, the novel model is employed to the verification of a cache which is module of a custom-built SoC system that has been applied in practical, and the result shows that the cache system is verified correctly using the exhaustive search model, and it makes the verification much more manageable and flexible. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cache%20system" title="cache system">cache system</a>, <a href="https://publications.waset.org/abstracts/search?q=formal%20verification" title=" formal verification"> formal verification</a>, <a href="https://publications.waset.org/abstracts/search?q=novel%20model" title=" novel model"> novel model</a>, <a href="https://publications.waset.org/abstracts/search?q=system%20on%20chip%20%28SoC%29" title=" system on chip (SoC)"> system on chip (SoC)</a> </p> <a href="https://publications.waset.org/abstracts/26581/formal-verification-of-cache-system-using-a-novel-cache-memory-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26581.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">496</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">95</span> The Exploration Targets of the Nanpu Sag: Insight from Organic Geochemical Characteristics of Source Rocks and Oils</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lixin%20Pei">Lixin Pei</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhilong%20Huang"> Zhilong Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Wenzhe%20Gang"> Wenzhe Gang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Organic geochemistry of source rocks and oils in the Nanpu Sag, Bohai Bay basin was studied on the basis of the results of Rock-Eval and biomarker. The possible source rocks consist of the third member (Es₃) and the first member (Es₁) of Shahejie formation and the third member of Dongying Formation (Ed₃) in the Nanpu Sag. The Es₃, Es₁, and Ed₃ source rock intervals in the Nanpu Sag all have high organic-matter richness and are at hydrocarbon generating stage, which are regarded as effective source rocks. The three possible source rock intervals have different biomarker associations and can be differentiated by gammacerane/αβ C₃₀ hopane, ETR ([C₂₈+C₂₉]/ [C₂₈+C₂₉+Ts]), C₂₇ diasterane/sterane and C₂₇/C₂₉ steranes, which suggests they deposited in different environments. Based on the oil-source rock correlation, the shallow oils mainly originated from the Es₃ and Es₁ source rocks in the Nanpu Sag. Through hydrocarbon generation and expulsion history of the source rocks, trap development history and accumulation history, the shallow oils mainly originated from paleo-reservoirs in the Es₃ and Es₁ during the period of Neotectonism, and the residual paleo-reservoirs in the Es₃ and Es₁ would be the focus targets in the Nanpu Sag; Bohai Bay Basin. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=source%20rock" title="source rock">source rock</a>, <a href="https://publications.waset.org/abstracts/search?q=biomarker%20association" title=" biomarker association"> biomarker association</a>, <a href="https://publications.waset.org/abstracts/search?q=Nanpu%20Sag" title=" Nanpu Sag"> Nanpu Sag</a>, <a href="https://publications.waset.org/abstracts/search?q=Bohai%20Bay%20Basin" title=" Bohai Bay Basin"> Bohai Bay Basin</a> </p> <a href="https://publications.waset.org/abstracts/79990/the-exploration-targets-of-the-nanpu-sag-insight-from-organic-geochemical-characteristics-of-source-rocks-and-oils" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79990.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">373</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">94</span> Sharing Experience in Authentic Learning for Mobile Security</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kai%20Qian">Kai Qian</a>, <a href="https://publications.waset.org/abstracts/search?q=Lixin%20Tao"> Lixin Tao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mobile devices such as smartphones are getting more and more popular in our daily lives. The security vulnerability and threat attacks become a very emerging and important research and education topic in computing security discipline. There is a need to have an innovative mobile security hands-on laboratory to provide students with real world relevant mobile threat analysis and protection experience. This paper presents an authentic teaching and learning mobile security approach with smartphone devices which covers most important mobile threats in most aspects of mobile security. Each lab focuses on one type of mobile threats, such as mobile messaging threat, and conveys the threat analysis and protection in multiple ways, including lectures and tutorials, multimedia or app-based demonstration for threats analysis, and mobile app development for threat protections. This authentic learning approach is affordable and easily-adoptable which immerse students in a real world relevant learning environment with real devices. This approach can also be applied to many other mobile related courses such as mobile Java programming, database, network, and any security relevant courses so that can learn concepts and principles better with the hands-on authentic learning experience. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mobile%20computing" title="mobile computing">mobile computing</a>, <a href="https://publications.waset.org/abstracts/search?q=Android" title=" Android"> Android</a>, <a href="https://publications.waset.org/abstracts/search?q=network" title=" network"> network</a>, <a href="https://publications.waset.org/abstracts/search?q=security" title=" security"> security</a>, <a href="https://publications.waset.org/abstracts/search?q=labware" title=" labware"> labware</a> </p> <a href="https://publications.waset.org/abstracts/7212/sharing-experience-in-authentic-learning-for-mobile-security" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7212.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">406</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">93</span> Simulation of Uniaxial Ratcheting Behaviors of SA508-3 Steel at Elevated Temperature</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jun%20Tian">Jun Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu%20Yang"> Yu Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Liping%20Zhang"> Liping Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Qianhua%20Kan"> Qianhua Kan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Experimental results show that SA 508-3 steel exhibits temperature dependent cyclic softening characteristic and obvious ratcheting behaviors, and dynamic strain age was observed at temperature range of 200 ºC to 350 ºC. Based on these observations, a temperature dependent cyclic plastic constitutive model was proposed by introducing the nonlinear cyclic softening and kinematic hardening rules, and the dynamic strain age was also considered into the constitutive model. Comparisons between experiments and simulations were carried out to validate the proposed model at elevated temperature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=constitutive%20model" title="constitutive model">constitutive model</a>, <a href="https://publications.waset.org/abstracts/search?q=elevated%20temperature" title=" elevated temperature"> elevated temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=ratcheting" title=" ratcheting"> ratcheting</a>, <a href="https://publications.waset.org/abstracts/search?q=SA%20508-3" title=" SA 508-3"> SA 508-3</a> </p> <a href="https://publications.waset.org/abstracts/53469/simulation-of-uniaxial-ratcheting-behaviors-of-sa508-3-steel-at-elevated-temperature" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53469.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">302</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">92</span> Wet Spun Graphene Fibers With Silver Nanoparticles For Flexible Electronic Applications </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Syed%20W.%20Hasan">Syed W. Hasan</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhiqun%20Tian"> Zhiqun Tian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wet spinning provides a facile and economic route to fabricate graphene nanofibers (GFs) on mass scale. Nevertheless, the pristine GFs exhibit significantly low electrical and mechanical properties owing to stacked graphene sheets and weak inter-atomic bonding. In this report, we present highly conductive Ag-decorated-GFs (Ag/GFs). The SEM micrographs show Ag nanoparticles (NPs) (dia ~10 nm) are homogeneously distributed throughout the cross-section of the fiber. The Ag NPs provide a conductive network for the electrons flow raising the conductivity to 1.8(10^4) S/m which is 4 times higher than the pristine GFs. Our results surpass the conductivities of graphene fibers doped with CNTs, Nanocarbon, fullerene, and Cu. The chemical and structural attributes of Ag/GFs are further elucidated through XPS, AFM and Raman spectroscopy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ag%20nanoparticles" title="Ag nanoparticles">Ag nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=Conductive%20fibers" title=" Conductive fibers"> Conductive fibers</a>, <a href="https://publications.waset.org/abstracts/search?q=Graphene" title=" Graphene"> Graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=Wet%20spinning" title=" Wet spinning"> Wet spinning</a> </p> <a href="https://publications.waset.org/abstracts/122583/wet-spun-graphene-fibers-with-silver-nanoparticles-for-flexible-electronic-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/122583.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">142</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">91</span> Impact Characteristics of Fragile Cover Based on Numerical Simulation and Experimental Verification</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dejin%20Chen">Dejin Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Bin%20Lin"> Bin Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaohui%20LI"> Xiaohui LI</a>, <a href="https://publications.waset.org/abstracts/search?q=Haobin%20Tian"> Haobin Tian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to acquire stable impact performance of cover, the factors influencing the impact force of the cover were analyzed and researched. The influence of impact factors such as impact velocity, impact weight and fillet radius of warhead was studied by Orthogonal experiment. Through the range analysis and numerical simulation, the results show that the impact velocity has significant influences on impact force of cover. The impact force decreases with the increase of impact velocity and impact weight. The test results are similar to the numerical simulation. The cover broke up into four parts along the groove. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fragile%20cover" title="fragile cover">fragile cover</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title=" numerical simulation"> numerical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=impact%20force" title=" impact force"> impact force</a>, <a href="https://publications.waset.org/abstracts/search?q=epoxy%20foam" title=" epoxy foam"> epoxy foam</a> </p> <a href="https://publications.waset.org/abstracts/136873/impact-characteristics-of-fragile-cover-based-on-numerical-simulation-and-experimental-verification" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/136873.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">263</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">90</span> A Learning-Based EM Mixture Regression Algorithm</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yi-Cheng%20Tian">Yi-Cheng Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Miin-Shen%20Yang"> Miin-Shen Yang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The mixture likelihood approach to clustering is a popular clustering method where the expectation and maximization (EM) algorithm is the most used mixture likelihood method. In the literature, the EM algorithm had been used for mixture regression models. However, these EM mixture regression algorithms are sensitive to initial values with a priori number of clusters. In this paper, to resolve these drawbacks, we construct a learning-based schema for the EM mixture regression algorithm such that it is free of initializations and can automatically obtain an approximately optimal number of clusters. Some numerical examples and comparisons demonstrate the superiority and usefulness of the proposed learning-based EM mixture regression algorithm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=clustering" title="clustering">clustering</a>, <a href="https://publications.waset.org/abstracts/search?q=EM%20algorithm" title=" EM algorithm"> EM algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=Gaussian%20mixture%20model" title=" Gaussian mixture model"> Gaussian mixture model</a>, <a href="https://publications.waset.org/abstracts/search?q=mixture%20regression%20model" title=" mixture regression model"> mixture regression model</a> </p> <a href="https://publications.waset.org/abstracts/25163/a-learning-based-em-mixture-regression-algorithm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25163.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">510</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">89</span> Boryl Radical-Promoted Dehydroxylative Alkylation of 3-Hydroxyoxindole Derivatives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tesfaye%20Tebeka%20Simur">Tesfaye Tebeka Simur</a>, <a href="https://publications.waset.org/abstracts/search?q=Tian-Yu%20Peng"> Tian-Yu Peng</a>, <a href="https://publications.waset.org/abstracts/search?q=Yi-Feng%20Wang"> Yi-Feng Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiu-Wei%20Wu"> Xiu-Wei Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Feng-Lian%20Zhang"> Feng-Lian Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A boryl radical-promoted dehydroxylative alkylation of 3-hydroxy-oxindole derivatives is achieved. The reaction starts from addition of 4-dimethylaminopyridine (DMAP)-boryl radical to the amide carbonyl oxygen atom, which induces a spin-center shift process to promote the C−O bond cleavage. The elimination of a hydroxide anion from a free hydroxy group is also accomplished. Capture of the generated carbon radical with alkenes furnishes a variety of C-3 alkylated oxindoles. This method features a simple operation and broad substrate scope. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boryl%20radical" title="boryl radical">boryl radical</a>, <a href="https://publications.waset.org/abstracts/search?q=C-O" title=" C-O"> C-O</a>, <a href="https://publications.waset.org/abstracts/search?q=C-F" title=" C-F"> C-F</a>, <a href="https://publications.waset.org/abstracts/search?q=C%3DC" title=" C=C"> C=C</a>, <a href="https://publications.waset.org/abstracts/search?q=C%3DN%20bond%20activation" title=" C=N bond activation"> C=N bond activation</a>, <a href="https://publications.waset.org/abstracts/search?q=spin%20center%20shift" title=" spin center shift"> spin center shift</a> </p> <a href="https://publications.waset.org/abstracts/166794/boryl-radical-promoted-dehydroxylative-alkylation-of-3-hydroxyoxindole-derivatives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166794.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">102</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">88</span> MegaProjects and the Governing Processes That Lead to Success and Failure: A Literature Review</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fangwei%20Zhu">Fangwei Zhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Tian"> Wei Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Linzhuo%20Wang"> Linzhuo Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Miao%20Yu"> Miao Yu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Megaproject has long been a critical issue in project governance, for its low success rate and large impact on society. Although the extant literature on megaproject governance is vast, to our best knowledge, the lacking of a thorough literature review makes it hard for us to gain a holistic view on current scenario of megaproject governance. The study conducts a systematic literature review process to analyze the existing literatures on megaproject governance. The finding indicates that mega project governance needs to be handled at network level and forming a network level governance provides a holistic framework for governing megaproject towards sustainable development of the projects. Theoretical and practical implications, as well as future studies and limitations, were discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=megaproject" title="megaproject">megaproject</a>, <a href="https://publications.waset.org/abstracts/search?q=governance" title=" governance"> governance</a>, <a href="https://publications.waset.org/abstracts/search?q=literature%20review" title=" literature review"> literature review</a>, <a href="https://publications.waset.org/abstracts/search?q=network" title=" network"> network</a> </p> <a href="https://publications.waset.org/abstracts/101101/megaprojects-and-the-governing-processes-that-lead-to-success-and-failure-a-literature-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/101101.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">200</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">87</span> Comparative Study of Poetics of Ancient China and Greece</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Junwu%20Tian">Junwu Tian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Chinese poetics originated in the pre-Qin period, while Western poetics came into being in the Hellenistic period. Although there was no mutual communication and influence between the two kinds of poetics due to both geographical distance and chronological displacement, the Sino-Western thinkers shared much in common, particularly in the social function of literature and art, the pursuit of unified and harmonious aesthetics, the advocacy of poets’ subjective initiative in the creative process of literature and art. In the sphere of rhetoric, the poetics of the pre-Qin scholars and their Greek counterparts also had heterogeneous similarities. By comparing the aesthetic ideas of Confucius, Mencius, Xun Zi, and Deng Xi with those of Plato, Aristotle, and Protagoras, this paper intends to reveal the common concerns of Chinese and Western poetics in the context of heterogeneous cultures and in their respective origin periods. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pre-Qin%20poetics" title="Pre-Qin poetics">Pre-Qin poetics</a>, <a href="https://publications.waset.org/abstracts/search?q=ancient%20Greek%20poetics" title=" ancient Greek poetics"> ancient Greek poetics</a>, <a href="https://publications.waset.org/abstracts/search?q=heterogeneous%20similarity" title=" heterogeneous similarity"> heterogeneous similarity</a>, <a href="https://publications.waset.org/abstracts/search?q=origin%20period" title=" origin period"> origin period</a> </p> <a href="https://publications.waset.org/abstracts/167723/comparative-study-of-poetics-of-ancient-china-and-greece" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167723.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">80</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">86</span> Investor Sentiment and Commodity Trading Advisor Fund Performance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tian%20Lan">Tian Lan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Arbitrageurs participate in a variety of techniques in response to the existence of fluctuating sentiment, resulting in sparse sentiment exposures. This paper found that Commodity Trading Advisor (CTA) funds in the top decile rated by sentiment beta outperformed those in the bottom decile by 0.33% per month on a risk-adjusted basis, with the difference being larger among skilled managers. This paper also discovered that around ten percent of Commodity Trading Advisor (CTA) funds could accurately predict market sentiment, which has a positive correlation with fund sentiment beta and acts as a determinant in fund performance. Instead of betting against mispricing, this research demonstrates that a competent manager can achieve remarkable returns by forecasting and reacting to shifts in investor sentiment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=investment%20sentiment" title="investment sentiment">investment sentiment</a>, <a href="https://publications.waset.org/abstracts/search?q=CTA%20fund" title=" CTA fund"> CTA fund</a>, <a href="https://publications.waset.org/abstracts/search?q=market%20timing" title=" market timing"> market timing</a>, <a href="https://publications.waset.org/abstracts/search?q=fund%20performance" title=" fund performance"> fund performance</a> </p> <a href="https://publications.waset.org/abstracts/163072/investor-sentiment-and-commodity-trading-advisor-fund-performance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163072.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">84</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">85</span> Biologically Inspired Small Infrared Target Detection Using Local Contrast Mechanisms</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tian%20Xia">Tian Xia</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuan%20Yan%20Tang"> Yuan Yan Tang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to obtain higher small target detection accuracy, this paper presents an effective algorithm inspired by the local contrast mechanism. The proposed method can enhance target signal and suppress background clutter simultaneously. In the first stage, a enhanced image is obtained using the proposed Weighted Laplacian of Gaussian. In the second stage, an adaptive threshold is adopted to segment the target. Experimental results on two changeling image sequences show that the proposed method can detect the bright and dark targets simultaneously, and is not sensitive to sea-sky line of the infrared image. So it is fit for IR small infrared target detection. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=small%20target%20detection" title="small target detection">small target detection</a>, <a href="https://publications.waset.org/abstracts/search?q=local%20contrast" title=" local contrast"> local contrast</a>, <a href="https://publications.waset.org/abstracts/search?q=human%20vision%20system" title=" human vision system"> human vision system</a>, <a href="https://publications.waset.org/abstracts/search?q=Laplacian%20of%20Gaussian" title=" Laplacian of Gaussian"> Laplacian of Gaussian</a> </p> <a href="https://publications.waset.org/abstracts/19199/biologically-inspired-small-infrared-target-detection-using-local-contrast-mechanisms" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19199.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">469</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">84</span> The Fundamental Research and Industrial Application on CO₂+O₂ in-situ Leaching Process in China</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lixin%20Zhao">Lixin Zhao</a>, <a href="https://publications.waset.org/abstracts/search?q=Genmao%20Zhou"> Genmao Zhou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Traditional acid in-situ leaching (ISL) is not suitable for the sandstone uranium deposit with low permeability and high content of carbonate minerals, because of the blocking of calcium sulfate precipitates. Another factor influences the uranium acid in-situ leaching is that the pyrite in ore rocks will react with oxidation reagent and produce lots of sulfate ions which may speed up the precipitation process of calcium sulphate and consume lots of oxidation reagent. Due to the advantages such as less chemical reagent consumption and groundwater pollution, CO₂+O₂ in-situ leaching method has become one of the important research areas in uranium mining. China is the second country where CO₂+O₂ ISL has been adopted in industrial uranium production of the world. It is shown that the CO₂+O₂ ISL in China has been successfully developed. The reaction principle, technical process, well field design and drilling engineering, uranium-bearing solution processing, etc. have been fully studied. At current stage, several uranium mines use CO₂+O₂ ISL method to extract uranium from the ore-bearing aquifers. The industrial application and development potential of CO₂+O₂ ISL method in China are summarized. By using CO₂+O₂ neutral leaching technology, the problem of calcium carbonate and calcium sulfate precipitation have been solved during uranium mining. By reasonably regulating the amount of CO₂ and O₂, related ions and hydro-chemical conditions can be controlled within the limited extent for avoiding the occurrence of calcium sulfate and calcium carbonate precipitation. Based on this premise, the demand of CO₂+O₂ uranium leaching has been met to the maximum extent, which not only realizes the effective leaching of uranium, but also avoids the occurrence and precipitation of calcium carbonate and calcium sulfate, realizing the industrial development of the sandstone type uranium deposit. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CO%E2%82%82%2BO%E2%82%82%20ISL" title="CO₂+O₂ ISL">CO₂+O₂ ISL</a>, <a href="https://publications.waset.org/abstracts/search?q=industrial%20production" title=" industrial production"> industrial production</a>, <a href="https://publications.waset.org/abstracts/search?q=well%20field%20layout" title=" well field layout"> well field layout</a>, <a href="https://publications.waset.org/abstracts/search?q=uranium%20processing" title=" uranium processing"> uranium processing</a> </p> <a href="https://publications.waset.org/abstracts/100421/the-fundamental-research-and-industrial-application-on-co2o2-in-situ-leaching-process-in-china" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/100421.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">176</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">83</span> Survey Investigation of Perceptions of Technologists among Primary Students: Stereotypes, Diversity, and Their Use of Science, Technology, Engineering, and Mathematics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tian%20Luo">Tian Luo</a>, <a href="https://publications.waset.org/abstracts/search?q=Wing%20Mui%20Winnie%20So"> Wing Mui Winnie So</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Gaining career awareness in STEM is an important educational outcome in STEM education. While many studies focused on students’ understanding of scientists and engineers, very few studies explore students’ perceptions of technologists as a group of STEM professionals. In this study, 300 valid surveys which include drawing task and follow-up questions about technologist were collected from 4th to 6th grade students. The results showed that 75.1% of the students draw a technologist as a male and 19.3% draw a technologist as a female. Most students believe that technologists use math, science or engineering in their work and can name a few categories of technologists. The drawings also showed that students tend to present technologists as people who work with a computer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=STEM%20%28Science" title="STEM (Science">STEM (Science</a>, <a href="https://publications.waset.org/abstracts/search?q=Technology" title=" Technology"> Technology</a>, <a href="https://publications.waset.org/abstracts/search?q=Engineering" title=" Engineering"> Engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=and%20Mathematics%29%20education" title=" and Mathematics) education"> and Mathematics) education</a>, <a href="https://publications.waset.org/abstracts/search?q=elementary%20students" title=" elementary students"> elementary students</a>, <a href="https://publications.waset.org/abstracts/search?q=technologist" title=" technologist"> technologist</a>, <a href="https://publications.waset.org/abstracts/search?q=STEM%20careers" title=" STEM careers"> STEM careers</a> </p> <a href="https://publications.waset.org/abstracts/87535/survey-investigation-of-perceptions-of-technologists-among-primary-students-stereotypes-diversity-and-their-use-of-science-technology-engineering-and-mathematics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87535.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">255</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">82</span> The Effect of Corporate Governance on Earnings Management: When Firms Report Increasing Earnings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Su-Ping%20Liu">Su-Ping Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yue%20Tian"> Yue Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Yifan%20Shen"> Yifan Shen </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study investigates the effect of corporate governance on earnings management when firms have reported a long stream of earnings increases (hereafter referred to as earnings beaters). We expect that good quality of corporate governance decreases the probability of income-increasing earnings management. We employ transparent tools to capture firms’ opportunistic management behavior, specifically, the repurchase of stock. In addition, we use corporate governance proxies to measure the degree of corporate governance, including board size, board independence, CEO duality, and the frequency of meeting. The results hold after the controlling of variables that suggested in prior literature. We expect that the simple technique, that is, firms’ degree of corporate governance, to be used as an inexpensive first step in detecting earnings management. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=corporate%20governance" title="corporate governance">corporate governance</a>, <a href="https://publications.waset.org/abstracts/search?q=earnings%20management" title=" earnings management"> earnings management</a>, <a href="https://publications.waset.org/abstracts/search?q=earnings%20patterns" title=" earnings patterns"> earnings patterns</a>, <a href="https://publications.waset.org/abstracts/search?q=stock%20repurchase" title=" stock repurchase"> stock repurchase</a> </p> <a href="https://publications.waset.org/abstracts/113537/the-effect-of-corporate-governance-on-earnings-management-when-firms-report-increasing-earnings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/113537.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">176</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">81</span> Evaluation of tribological performance of aged and unaged biodiesel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yuan-Ching%20Lin">Yuan-Ching Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Tian-Yi%20Huang"> Tian-Yi Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Ming-Jhe%20Hsieh"> Ming-Jhe Hsieh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, soybean biodiesel was blended with petroleum diesel as testing oils (B2). The tribiological performance of the B2 biodiesel before and after aging was evaluated using a reciprocating cylinder-on-flat wear test rig (Cameron-Plint TE-77) at various temperatures. The worn surface of each tested specimen was observed using a field-emission scanning electron microscope (FESEM). The compositions of the chemical films on each worn surface were determined using an energy dispersive spectrometer (EDS). The experimental results demonstrate that the tribiological behavior of the B2 was superior to that of other testing oils. Furthermore, the aging of biodiesel caused acidification, which resulted in poorer wear performance in the same experimental condition compared with others. The worn morphology of the specimen that was tested in the aged soybean biodiesel exhibited corrosion wear, reflecting low wear resistance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title="biodiesel">biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=soybean" title=" soybean"> soybean</a>, <a href="https://publications.waset.org/abstracts/search?q=tribological%20performance" title=" tribological performance "> tribological performance </a> </p> <a href="https://publications.waset.org/abstracts/25441/evaluation-of-tribological-performance-of-aged-and-unaged-biodiesel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25441.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">494</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">80</span> Development of an Omaha System-Based Remote Intervention Program for Work-Related Musculoskeletal Disorders (WMSDs) Among Front-Line Nurses</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tianqiao%20Zhang">Tianqiao Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Ye%20Tian"> Ye Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Yanliang%20Yin"> Yanliang Yin</a>, <a href="https://publications.waset.org/abstracts/search?q=Yichao%20Tian"> Yichao Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Suzhai%20Tian"> Suzhai Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Weige%20Sun"> Weige Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Shuhui%20Gong"> Shuhui Gong</a>, <a href="https://publications.waset.org/abstracts/search?q=Limei%20Tang"> Limei Tang</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruoliang%20Tang"> Ruoliang Tang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Healthcare workers, especially the nurses all over the world, are highly vulnerable to work-related musculoskeletal disorders (WMSDs), experiencing high rates of neck, shoulder, and low back injuries, due to the unfavorable working conditions. To reduce WMSDs among nursing personnel, many workplace interventions have been developed and implemented. Unfortunately, the ongoing Covid-19 (SARS-CoV-2) pandemic has posed great challenges to the ergonomic practices and interventions in healthcare facilities, particularly the hospitals, since current Covid-19 mitigation measures, such as social distancing and working remotely, has substantially minimized in-person gatherings and trainings. On the other hand, hospitals throughout the world have been short-staffed, resulting in disturbance of shift scheduling and more importantly, the increased job demand among the available caregivers, particularly the doctors and nurses. With the latest development in communication technology, remote intervention measures have been developed as an alternative, without the necessity of in-person meetings. The Omaha System (OS) is a standardized classification system for nursing practices, including a problem classification system, an intervention system, and an outcome evaluation system. This paper describes the development of an OS-based ergonomic intervention program. Methods: First, a comprehensive literature search was performed among worldwide electronic databases, including PubMed, Web of Science, Cochrane Library, China National Knowledge Infrastructure (CNKI), between journal inception to May 2020, resulting in a total of 1,418 scientific articles. After two independent screening processes, the final knowledge pool included eleven randomized controlled trial studies to develop the draft of the intervention program with Omaha intervention subsystem as the framework. After the determination of sample size needed for statistical power and the potential loss to follow-up, a total of 94 nurses from eight clinical departments agreed to provide written, informed consent to participate in the study, which were subsequently assigned into two random groups (i.e., intervention vs. control). A subgroup of twelve nurses were randomly selected to participate in a semi-structured interview, during which their general understanding and awareness of musculoskeletal disorders and potential interventions was assessed. Then, the first draft was modified to reflect the findings from these interviews. Meanwhile, the tentative program schedule was also assessed. Next, two rounds of consultation were conducted among experts in nursing management, occupational health, psychology, and rehabilitation, to further adjust and finalize the intervention program. The control group had access to all the information and exercise modules at baseline, while an interdisciplinary research team was formed and supervised the implementation of the on-line intervention program through multiple social media groups. Outcome measures of this comparative study included biomechanical load assessed by the Quick Exposure Check and stresses due to awkward body postures. Results and Discussion: Modification to the draft included (1) supplementing traditional Chinese medicine practices, (2) adding the use of assistive patient handling equipment, and (3) revising the on-line training method. Information module should be once a week, lasting about 20 to 30 minutes, for a total of 6 weeks, while the exercise module should be 5 times a week, each lasting about 15 to 20 minutes, for a total of 6 weeks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ergonomic%20interventions" title="ergonomic interventions">ergonomic interventions</a>, <a href="https://publications.waset.org/abstracts/search?q=musculoskeletal%20disorders%20%28MSDs%29" title=" musculoskeletal disorders (MSDs)"> musculoskeletal disorders (MSDs)</a>, <a href="https://publications.waset.org/abstracts/search?q=omaha%20system" title=" omaha system"> omaha system</a>, <a href="https://publications.waset.org/abstracts/search?q=nurses" title=" nurses"> nurses</a>, <a href="https://publications.waset.org/abstracts/search?q=Covid-19" title=" Covid-19"> Covid-19</a> </p> <a href="https://publications.waset.org/abstracts/155201/development-of-an-omaha-system-based-remote-intervention-program-for-work-related-musculoskeletal-disorders-wmsds-among-front-line-nurses" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155201.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">182</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">79</span> Study the Influence of Zn in Zn-MgFe₂O₄ Nanoparticles for CO₂ Gas Sensors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maryam%20Kiani">Maryam Kiani</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaoqin%20Tian"> Xiaoqin Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu%20Du"> Yu Du</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdul%20Basit%20Kiani"> Abdul Basit Kiani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Zn-doped MgFe₂O₄ nanoparticles (ZMFO) (Zn=0.0, 0.2, 0.35, 0.5,) were prepared by Co-precipitation synthesis route. Structural and morphological analysis confirmed the formation of spinel cubic nanostructure by X-Ray diffraction (XRD) data shows high reactive surface area owing to a small average particle size of about 14 nm, which greatly influences the gas sensing mechanism. The gas sensing property of ZMFO for several gases was obtained by measuring the resistance as a function of different factors, like composition and response time in air and in the presence of gas. The sensitivity of spinel ferrite to gases CO₂, O₂, and O₂ at room temperature has been compared. The nanostructured ZMFO exhibited high sensitivity in the order of CO₂>O₂ and showed a good response time of (~1min) to CO₂, demonstrating that this expanse of research can be used in the field of gas sensors devising high sensitivity and good selectivity at 25°C. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=MgFe%E2%82%82O%E2%82%84%20nanoparticles" title="MgFe₂O₄ nanoparticles">MgFe₂O₄ nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrothermal%20synthesis" title=" hydrothermal synthesis"> hydrothermal synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20sensing%20properties" title=" gas sensing properties"> gas sensing properties</a>, <a href="https://publications.waset.org/abstracts/search?q=XRD" title=" XRD"> XRD</a> </p> <a href="https://publications.waset.org/abstracts/172293/study-the-influence-of-zn-in-zn-mgfe2o4-nanoparticles-for-co2-gas-sensors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/172293.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">118</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">78</span> Short-Term Effects of Extreme Temperatures on Cause Specific Cardiovascular Admissions in Beijing, China</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Deginet%20Aklilu">Deginet Aklilu</a>, <a href="https://publications.waset.org/abstracts/search?q=Tianqi%20Wang"> Tianqi Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Endwoke%20Amsalu"> Endwoke Amsalu</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Feng"> Wei Feng</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhiwei%20Li"> Zhiwei Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Xia%20Li"> Xia Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Lixin%20Tao"> Lixin Tao</a>, <a href="https://publications.waset.org/abstracts/search?q=Yanxia%20Luo"> Yanxia Luo</a>, <a href="https://publications.waset.org/abstracts/search?q=Moning%20Guo"> Moning Guo</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiangtong%20Liu"> Xiangtong Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiuhua%20Guo"> Xiuhua Guo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Extreme temperature-related cardiovascular diseases (CVDs) have become a growing public health concern. However, the impact of temperature on the cause of specific CVDs has not been well studied in the study area. The objective of this study was to assess the impact of temperature on cause-specific cardiovascular hospital admissions in Beijing, China. We obtained data from 172 large general hospitals from the Beijing Public Health Information Center Cardiovascular Case Database and China. Meteorological Administration covering 16 districts in Beijing from 2013 to 2017. We used a time-stratified case crossover design with a distributed lag nonlinear model (DLNM) to derive the impact of temperature on CVD in hospitals back to 27 days on CVD admissions. The temperature data were stratified as cold (extreme and moderate ) and hot (moderate and extreme ). Within five years (January 2013-December 2017), a total of 460,938 (male 54.9% and female 45.1%) CVD admission cases were reported. The exposure-response relationship for hospitalization was described by a "J" shape for the total and cause-specific. An increase in the six-day moving average temperature from moderate hot (30.2 °C) to extreme hot (36.9 °C) resulted in a significant increase in CVD admissions of 16.1%(95% CI = 12.8%-28.9%). However, the effect of cold temperature exposure on CVD admissions over a lag time of 0-27 days was found to be non significant, with a relative risk of 0.45 (95% CI = 0.378-0.55) for extreme cold (-8.5 °C)and 0.53 (95% CI = 0.47-0.60) for moderate cold (-5.6 °C). The results of this study indicate that exposure to extremely high temperatures is highly associated with an increase in cause-specific CVD admissions. These finding may guide to create and raise awareness of the general population, government and private sectors regarding on the effects of current weather conditions on CVD. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=admission" title="admission">admission</a>, <a href="https://publications.waset.org/abstracts/search?q=Beijing" title=" Beijing"> Beijing</a>, <a href="https://publications.waset.org/abstracts/search?q=cardiovascular%20diseases" title=" cardiovascular diseases"> cardiovascular diseases</a>, <a href="https://publications.waset.org/abstracts/search?q=distributed%20lag%20non%20linear%20model" title=" distributed lag non linear model"> distributed lag non linear model</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a> </p> <a href="https://publications.waset.org/abstracts/176111/short-term-effects-of-extreme-temperatures-on-cause-specific-cardiovascular-admissions-in-beijing-china" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/176111.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">62</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">77</span> Disruption Coordination of Supply Chain with Loss-Averse Retailer Under Buy-Back Contract</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yuan%20Tian">Yuan Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Benhe%20Gao"> Benhe Gao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper aims to investigate a two stage supply chain of one leading supplier and one following retailer that experiences two factors perturbation out of supplier's production cost, retailer's marginal cost and retail price in stochastic demand environment. Granted that risk neutral condition has long been discussed, little attention has been given to disruptions under the premise of risk neutral supplier and risk aversion retailer. We establish the optimal order quantity and revealed the profit distribution coefficient in risk-neutral static model, make adjustment under disruption scenario, and then select utility function method for risk aversion model. Using buy-back contract policy, the improvement of parameters can achieve channel coordination where Pareto optimal is realized. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=supply%20chain%20coordination" title="supply chain coordination">supply chain coordination</a>, <a href="https://publications.waset.org/abstracts/search?q=disruption%20management" title=" disruption management"> disruption management</a>, <a href="https://publications.waset.org/abstracts/search?q=buy-back%20contract" title=" buy-back contract"> buy-back contract</a>, <a href="https://publications.waset.org/abstracts/search?q=lose%20aversion" title=" lose aversion"> lose aversion</a> </p> <a href="https://publications.waset.org/abstracts/1671/disruption-coordination-of-supply-chain-with-loss-averse-retailer-under-buy-back-contract" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1671.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">327</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">76</span> Adaptive Few-Shot Deep Metric Learning</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wentian%20Shi">Wentian Shi</a>, <a href="https://publications.waset.org/abstracts/search?q=Daming%20Shi"> Daming Shi</a>, <a href="https://publications.waset.org/abstracts/search?q=Maysam%20Orouskhani"> Maysam Orouskhani</a>, <a href="https://publications.waset.org/abstracts/search?q=Feng%20Tian"> Feng Tian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Whereas currently the most prevalent deep learning methods require a large amount of data for training, few-shot learning tries to learn a model from limited data without extensive retraining. In this paper, we present a loss function based on triplet loss for solving few-shot problem using metric based learning. Instead of setting the margin distance in triplet loss as a constant number empirically, we propose an adaptive margin distance strategy to obtain the appropriate margin distance automatically. We implement the strategy in the deep siamese network for deep metric embedding, by utilizing an optimization approach by penalizing the worst case and rewarding the best. Our experiments on image recognition and co-segmentation model demonstrate that using our proposed triplet loss with adaptive margin distance can significantly improve the performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=few-shot%20learning" title="few-shot learning">few-shot learning</a>, <a href="https://publications.waset.org/abstracts/search?q=triplet%20network" title=" triplet network"> triplet network</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptive%20margin" title=" adaptive margin"> adaptive margin</a>, <a href="https://publications.waset.org/abstracts/search?q=deep%20learning" title=" deep learning"> deep learning</a> </p> <a href="https://publications.waset.org/abstracts/132975/adaptive-few-shot-deep-metric-learning" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/132975.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">171</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">75</span> E-Hailing Taxi Industry Management Mode Innovation Based on the Credit Evaluation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yuan-lin%20Liu">Yuan-lin Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ye%20Li"> Ye Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Tian%20Xia"> Tian Xia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There are some shortcomings in Chinese existing taxi management modes. This paper suggests to establish the third-party comprehensive information management platform and put forward an evaluation model based on credit. Four indicators are used to evaluate the drivers’ credit, they are passengers’ evaluation score, driving behavior evaluation, drivers’ average bad record number, and personal credit score. A weighted clustering method is used to achieve credit level evaluation for taxi drivers. The management of taxi industry is based on the credit level, while the grade of the drivers is accorded to their credit rating. Credit rating determines the cost, income levels, the market access, useful period of license and the level of wage and bonus, as well as violation fine. These methods can make the credit evaluation effective. In conclusion, more credit data will help to set up a more accurate and detailed classification standard library. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=credit" title="credit">credit</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile%20internet" title=" mobile internet"> mobile internet</a>, <a href="https://publications.waset.org/abstracts/search?q=e-hailing%20taxi" title=" e-hailing taxi"> e-hailing taxi</a>, <a href="https://publications.waset.org/abstracts/search?q=management%20mode" title=" management mode"> management mode</a>, <a href="https://publications.waset.org/abstracts/search?q=weighted%20cluster" title=" weighted cluster"> weighted cluster</a> </p> <a href="https://publications.waset.org/abstracts/60869/e-hailing-taxi-industry-management-mode-innovation-based-on-the-credit-evaluation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60869.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">325</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">74</span> A Context-Centric Chatbot for Cryptocurrency Using the Bidirectional Encoder Representations from Transformers Neural Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Qitao%20Xie">Qitao Xie</a>, <a href="https://publications.waset.org/abstracts/search?q=Qingquan%20Zhang"> Qingquan Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofei%20Zhang"> Xiaofei Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Di%20Tian"> Di Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruixuan%20Wen"> Ruixuan Wen</a>, <a href="https://publications.waset.org/abstracts/search?q=Ting%20Zhu"> Ting Zhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ping%20Yi"> Ping Yi</a>, <a href="https://publications.waset.org/abstracts/search?q=Xin%20Li"> Xin Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Inspired by the recent movement of digital currency, we are building a question answering system concerning the subject of cryptocurrency using Bidirectional Encoder Representations from Transformers (BERT). The motivation behind this work is to properly assist digital currency investors by directing them to the corresponding knowledge bases that can offer them help and increase the querying speed. BERT, one of newest language models in natural language processing, was investigated to improve the quality of generated responses. We studied different combinations of hyperparameters of the BERT model to obtain the best fit responses. Further, we created an intelligent chatbot for cryptocurrency using BERT. A chatbot using BERT shows great potential for the further advancement of a cryptocurrency market tool. We show that the BERT neural networks generalize well to other tasks by applying it successfully to cryptocurrency. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bidirectional%20encoder%20representations%20from%20transformers" title="bidirectional encoder representations from transformers">bidirectional encoder representations from transformers</a>, <a href="https://publications.waset.org/abstracts/search?q=BERT" title=" BERT"> BERT</a>, <a href="https://publications.waset.org/abstracts/search?q=chatbot" title=" chatbot"> chatbot</a>, <a href="https://publications.waset.org/abstracts/search?q=cryptocurrency" title=" cryptocurrency"> cryptocurrency</a>, <a href="https://publications.waset.org/abstracts/search?q=deep%20learning" title=" deep learning"> deep learning</a> </p> <a href="https://publications.waset.org/abstracts/129261/a-context-centric-chatbot-for-cryptocurrency-using-the-bidirectional-encoder-representations-from-transformers-neural-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129261.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">147</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">73</span> Simulation Study on Spacecraft Surface Charging Induced by Jovian Plasma Environment with Particle in Cell Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Meihua%20Fang">Meihua Fang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yipan%20Guo"> Yipan Guo</a>, <a href="https://publications.waset.org/abstracts/search?q=Tao%20Fei"> Tao Fei</a>, <a href="https://publications.waset.org/abstracts/search?q=Pengyu%20Tian"> Pengyu Tian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Space plasma caused spacecraft surface charging is the major space environment hazard. Particle in cell (PIC) method can be used to simulate the interaction between space plasma and spacecraft. It was proved that surface charging level of spacecraft in Jupiter’s orbits was high for its’ electron-heavy plasma environment. In this paper, Jovian plasma environment is modeled and surface charging analysis is carried out by PIC based software Spacecraft Plasma Interaction System (SPIS). The results show that the spacecraft charging potentials exceed 1000V at 2Rj, 15Rj and 25Rj polar orbits in the dark side at worst case plasma model. Furthermore, the simulation results indicate that the large Jovian magnetic field increases the surface charging level for secondary electron gyration. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jupiter" title="Jupiter">Jupiter</a>, <a href="https://publications.waset.org/abstracts/search?q=PIC" title=" PIC"> PIC</a>, <a href="https://publications.waset.org/abstracts/search?q=space%20plasma" title=" space plasma"> space plasma</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20charging" title=" surface charging"> surface charging</a> </p> <a href="https://publications.waset.org/abstracts/106455/simulation-study-on-spacecraft-surface-charging-induced-by-jovian-plasma-environment-with-particle-in-cell-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106455.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">151</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">72</span> Level Set Based Extraction and Update of Lake Contours Using Multi-Temporal Satellite Images</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yindi%20Zhao">Yindi Zhao</a>, <a href="https://publications.waset.org/abstracts/search?q=Yun%20Zhang"> Yun Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Silu%20Xia"> Silu Xia</a>, <a href="https://publications.waset.org/abstracts/search?q=Lixin%20Wu"> Lixin Wu </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The contours and areas of water surfaces, especially lakes, often change due to natural disasters and construction activities. It is an effective way to extract and update water contours from satellite images using image processing algorithms. However, to produce optimal water surface contours that are close to true boundaries is still a challenging task. This paper compares the performances of three different level set models, including the Chan-Vese (CV) model, the signed pressure force (SPF) model, and the region-scalable fitting (RSF) energy model for extracting lake contours. After experiment testing, it is indicated that the RSF model, in which a region-scalable fitting (RSF) energy functional is defined and incorporated into a variational level set formulation, is superior to CV and SPF, and it can get desirable contour lines when there are “holes” in the regions of waters, such as the islands in the lake. Therefore, the RSF model is applied to extracting lake contours from Landsat satellite images. Four temporal Landsat satellite images of the years of 2000, 2005, 2010, and 2014 are used in our study. All of them were acquired in May, with the same path/row (121/036) covering Xuzhou City, Jiangsu Province, China. Firstly, the near infrared (NIR) band is selected for water extraction. Image registration is conducted on NIR bands of different temporal images for information update, and linear stretching is also done in order to distinguish water from other land cover types. Then for the first temporal image acquired in 2000, lake contours are extracted via the RSF model with initialization of user-defined rectangles. Afterwards, using the lake contours extracted the previous temporal image as the initialized values, lake contours are updated for the current temporal image by means of the RSF model. Meanwhile, the changed and unchanged lakes are also detected. The results show that great changes have taken place in two lakes, i.e. Dalong Lake and Panan Lake, and RSF can actually extract and effectively update lake contours using multi-temporal satellite image. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=level%20set%20model" title="level set model">level set model</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-temporal%20image" title=" multi-temporal image"> multi-temporal image</a>, <a href="https://publications.waset.org/abstracts/search?q=lake%20contour%20extraction" title=" lake contour extraction"> lake contour extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=contour%20update" title=" contour update"> contour update</a> </p> <a href="https://publications.waset.org/abstracts/25775/level-set-based-extraction-and-update-of-lake-contours-using-multi-temporal-satellite-images" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25775.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">366</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">71</span> Attention-based Adaptive Convolution with Progressive Learning in Speech Enhancement</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tian%20Lan">Tian Lan</a>, <a href="https://publications.waset.org/abstracts/search?q=Yixiang%20Wang"> Yixiang Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Wenxin%20Tai"> Wenxin Tai</a>, <a href="https://publications.waset.org/abstracts/search?q=Yilan%20Lyu"> Yilan Lyu</a>, <a href="https://publications.waset.org/abstracts/search?q=Zufeng%20Wu"> Zufeng Wu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The monaural speech enhancement task in the time-frequencydomain has a myriad of approaches, with the stacked con-volutional neural network (CNN) demonstrating superiorability in feature extraction and selection. However, usingstacked single convolutions method limits feature represen-tation capability and generalization ability. In order to solvethe aforementioned problem, we propose an attention-basedadaptive convolutional network that integrates the multi-scale convolutional operations into a operation-specific blockvia input dependent attention to adapt to complex auditoryscenes. In addition, we introduce a two-stage progressivelearning method to enlarge the receptive field without a dra-matic increase in computation burden. We conduct a series ofexperiments based on the TIMIT corpus, and the experimen-tal results prove that our proposed model is better than thestate-of-art models on all metrics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=speech%20enhancement" title="speech enhancement">speech enhancement</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptive%20convolu-tion" title="adaptive convolu-tion">adaptive convolu-tion</a>, <a href="https://publications.waset.org/abstracts/search?q=progressive%20learning" title="progressive learning">progressive learning</a>, <a href="https://publications.waset.org/abstracts/search?q=time-frequency%20domain" title="time-frequency domain">time-frequency domain</a> </p> <a href="https://publications.waset.org/abstracts/144532/attention-based-adaptive-convolution-with-progressive-learning-in-speech-enhancement" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144532.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">122</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Lixin%20Tian&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Lixin%20Tian&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Lixin%20Tian&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Lixin%20Tian&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div 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