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patching</title> <meta name="description" content="Search results for: patching"> <meta name="keywords" content="patching"> <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" 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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="patching"> <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> 7</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: patching</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">7</span> Patching and Stretching: Development of Policy Mixes for Entrepreneurship in China</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jian%20Shao">Jian Shao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of entrepreneurship on economic, innovation, and employment has been widely acknowledged by scholars and governments. As an essential factor of influencing entrepreneurship activities, entrepreneurship policy creates a conducive environment to support and develop entrepreneurship. However, the challenge in developing entrepreneurship policy is that policy is normally a combination of many different goals and instruments. Instead of examining the effect of individual policy instruments, we argue that attention to a policy mix is necessary. In recent years, much attention has been focused on comparing a single policy instrument to a policy mix, evaluating the interactions between different instruments within a mix or assessment of particular policy mixes. However, another required step in understanding policy mixes is to understand how and why mixes evolve and change over time and to determine whether any changes are an improvement. In this paper, we try to trace the development of the policy mix for entrepreneurship in China by mapping the policy goals and instruments and reveal the process of policy mix changing over time. We find two main process mechanisms of the entrepreneurship policy mix in China: patching and stretching. Compared with policy repackaging, patching and stretching are more realistic processes in the real world of the policy mix, and they are possible to achieve effectiveness by avoiding conflicts and promoting synergies among policy goals and instruments. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=entrepreneurship" title="entrepreneurship">entrepreneurship</a>, <a href="https://publications.waset.org/abstracts/search?q=China" title=" China"> China</a>, <a href="https://publications.waset.org/abstracts/search?q=policy%20design" title=" policy design"> policy design</a>, <a href="https://publications.waset.org/abstracts/search?q=policy%20mix" title=" policy mix"> policy mix</a>, <a href="https://publications.waset.org/abstracts/search?q=policy%20patching" title=" policy patching"> policy patching</a> </p> <a href="https://publications.waset.org/abstracts/128849/patching-and-stretching-development-of-policy-mixes-for-entrepreneurship-in-china" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128849.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">198</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">6</span> Trends in Use of Millings in Pavement Maintenance </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rafiqul%20Tarefder">Rafiqul Tarefder</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohiuddin%20Ahmad"> Mohiuddin Ahmad</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Hossain"> Mohammad Hossain</a> </p> <p class="card-text"><strong>Abstract:</strong></p> While milling materials from old pavement surface can be an important component of cost effective maintenance operation, their use in maintenance projects are not uniform and well documented. This study documents the different maintenance practices followed by four transportation districts of New Mexico Department of Transportation (NMDOT) in an attempt to find whether millings are being used in maintenance projects by those districts. Based on existing literature, a questionnaire was developed related to six common maintenance practices. NMDOT district personal were interviewed face to face to discuss and get answers to that questionnaire. It revealed that NMDOT districts mainly use chip seal and patching. Other maintenance procedures such as sand seal, scrub seal, slurry seal, and thin overlay have limited use. Two out of four participating districts do not have any documents on chip sealing; rather they employ the experiences of the chip seal crew. All districts use polymer modified high float emulsion (HFE100P) for chip seal with an application rate ranging from 0.4 to 0.56 gallons per square yard. Chip application rate varies from 15 to 40 lb/ square yard. State wide, the thickness of chip seal varies from 3/8" to 1" and life varies from 3 to 10 years. NMDOT districts mainly use three type of patching: pothole, dig-out and blade patch. Pothole patches are used for small potholes and during emergency, dig-out patches are used for all type of potholes sometimes after pothole patching, and blade patch is used when a significant portion of the pavement is damaged. Pothole patches last as low as three days whereas, blade patch lasts as long as 3 years. It was observed that all participating districts use millings in maintenance projects. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chip%20seal" title="chip seal">chip seal</a>, <a href="https://publications.waset.org/abstracts/search?q=sand%20seal" title=" sand seal"> sand seal</a>, <a href="https://publications.waset.org/abstracts/search?q=scrub%20seal" title=" scrub seal"> scrub seal</a>, <a href="https://publications.waset.org/abstracts/search?q=slurry%20seal" title=" slurry seal"> slurry seal</a>, <a href="https://publications.waset.org/abstracts/search?q=overlay" title=" overlay"> overlay</a>, <a href="https://publications.waset.org/abstracts/search?q=patching" title=" patching"> patching</a>, <a href="https://publications.waset.org/abstracts/search?q=millings" title=" millings"> millings</a> </p> <a href="https://publications.waset.org/abstracts/26878/trends-in-use-of-millings-in-pavement-maintenance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26878.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">342</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">5</span> Calculation of Stress Intensity Factors in Rotating Disks Containing 3D Semi-Elliptical Cracks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahdi%20Fakoor">Mahdi Fakoor</a>, <a href="https://publications.waset.org/abstracts/search?q=Seyed%20Mohammad%20Navid%20Ghoreishi"> Seyed Mohammad Navid Ghoreishi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Initiation and propagation of cracks may cause catastrophic failures in rotating disks, and hence determination of fracture parameter in rotating disks under the different working condition is very important issue. In this paper, a comprehensive study of stress intensity factors in rotating disks containing 3D semi-elliptical cracks under the different working condition is investigated. In this regard, after verification of modeling and analytical procedure, the effects of mechanical properties, rotational velocity, and orientation of cracks on Stress Intensity Factors (SIF) in rotating disks under centrifugal loading are investigated. Also, the effects of using composite patch in reduction of SIF in rotating disks are studied. By that way, the effects of patching design variables like mechanical properties, thickness, and ply angle are investigated individually. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=stress%20intensity%20factor" title="stress intensity factor">stress intensity factor</a>, <a href="https://publications.waset.org/abstracts/search?q=semi-elliptical%20crack" title=" semi-elliptical crack"> semi-elliptical crack</a>, <a href="https://publications.waset.org/abstracts/search?q=rotating%20disk" title=" rotating disk"> rotating disk</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20analysis%20%28FEA%29" title=" finite element analysis (FEA)"> finite element analysis (FEA)</a> </p> <a href="https://publications.waset.org/abstracts/47599/calculation-of-stress-intensity-factors-in-rotating-disks-containing-3d-semi-elliptical-cracks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47599.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">364</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">4</span> Optimal Design of Composite Patch for a Cracked Pipe by Utilizing Genetic Algorithm and Finite Element Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahdi%20Fakoor">Mahdi Fakoor</a>, <a href="https://publications.waset.org/abstracts/search?q=Seyed%20Mohammad%20Navid%20Ghoreishi"> Seyed Mohammad Navid Ghoreishi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Composite patching is a common way for reinforcing the cracked pipes and cylinders. The effects of composite patch reinforcement on fracture parameters of a cracked pipe depend on a variety of parameters such as number of layers, angle, thickness, and material of each layer. Therefore, stacking sequence optimization of composite patch becomes crucial for the applications of cracked pipes. In this study, in order to obtain the optimal stacking sequence for a composite patch that has minimum weight and maximum resistance in propagation of cracks, a coupled Multi-Objective Genetic Algorithm (MOGA) and Finite Element Method (FEM) process is proposed. This optimization process has done for longitudinal and transverse semi-elliptical cracks and optimal stacking sequences and Pareto’s front for each kind of cracks are presented. The proposed algorithm is validated against collected results from the existing literature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=multi%20objective%20optimization" title="multi objective optimization">multi objective optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=pareto%20front" title=" pareto front"> pareto front</a>, <a href="https://publications.waset.org/abstracts/search?q=composite%20patch" title=" composite patch"> composite patch</a>, <a href="https://publications.waset.org/abstracts/search?q=cracked%20pipe" title=" cracked pipe"> cracked pipe</a> </p> <a href="https://publications.waset.org/abstracts/67559/optimal-design-of-composite-patch-for-a-cracked-pipe-by-utilizing-genetic-algorithm-and-finite-element-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67559.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">312</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">3</span> Inviscid Steady Flow Simulation Around a Wing Configuration Using MB_CNS</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Umar%20Kiani">Muhammad Umar Kiani</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Shahbaz"> Muhammad Shahbaz</a>, <a href="https://publications.waset.org/abstracts/search?q=Hassan%20Akbar"> Hassan Akbar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Simulation of a high speed inviscid steady ideal air flow around a 2D/axial-symmetry body was carried out by the use of mb_cns code. mb_cns is a program for the time-integration of the Navier-Stokes equations for two-dimensional compressible flows on a multiple-block structured mesh. The flow geometry may be either planar or axisymmetric and multiply-connected domains can be modeled by patching together several blocks. The main simulation code is accompanied by a set of pre and post-processing programs. The pre-processing programs scriptit and mb_prep start with a short script describing the geometry, initial flow state and boundary conditions and produce a discretized version of the initial flow state. The main flow simulation program (or solver as it is sometimes called) is mb_cns. It takes the files prepared by scriptit and mb_prep, integrates the discrete form of the gas flow equations in time and writes the evolved flow data to a set of output files. This output data may consist of the flow state (over the whole domain) at a number of instants in time. After integration in time, the post-processing programs mb_post and mb_cont can be used to reformat the flow state data and produce GIF or postscript plots of flow quantities such as pressure, temperature and Mach number. The current problem is an example of supersonic inviscid flow. The flow domain for the current problem (strake configuration wing) is discretized by a structured grid and a finite-volume approach is used to discretize the conservation equations. The flow field is recorded as cell-average values at cell centers and explicit time stepping is used to update conserved quantities. MUSCL-type interpolation and one of three flux calculation methods (Riemann solver, AUSMDV flux splitting and the Equilibrium Flux Method, EFM) are used to calculate inviscid fluxes across cell faces. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=steady%20flow%20simulation" title="steady flow simulation">steady flow simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=processing%20programs" title=" processing programs"> processing programs</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation%20code" title=" simulation code"> simulation code</a>, <a href="https://publications.waset.org/abstracts/search?q=inviscid%20flux" title=" inviscid flux"> inviscid flux</a> </p> <a href="https://publications.waset.org/abstracts/2345/inviscid-steady-flow-simulation-around-a-wing-configuration-using-mb-cns" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2345.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">429</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">2</span> A Fine String between Weaving the Text and Patching It: Reading beyond the Hidden Symbols and Antithetical Relationships in the Classical and Modern Arabic Poetry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rima%20Abu%20Jaber-Bransi">Rima Abu Jaber-Bransi</a>, <a href="https://publications.waset.org/abstracts/search?q=Rawya%20Jarjoura%20Burbara"> Rawya Jarjoura Burbara</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study reveals the extension and continuity between the classical Arabic poetry and modern Arabic poetry through investigation of its ambiguity, symbolism, and antithetical relationships. The significance of this study lies in its exploration and discovering of a new method of reading classical and modern Arabic poetry. The study deals with the Fatimid poetry and discovers a new method to read it. It also deals with the relationship between the apparent and the hidden meanings of words through focusing on how the paradoxical antithetical relationships change the meaning of the whole poem and give it a different dimension through the use of Oxymorons. In our unprecedented research on Oxymoron, we found out that the words in modern Arabic poetry are used in unusual combinations that convey apparent and hidden meanings. In some cases, the poet introduces an image with a symbol of a certain thing, but the reader soon discovers that the symbol includes its opposite, too. The question is: How does the reader find that hidden harmony in that apparent disharmony? The first and most important conclusion of this study is that the Fatimid poetry was written for two types of readers: religious readers who know the religious symbols and the hidden secret meanings behind the words, and ordinary readers who understand the apparent literal meaning of the words. Consequently, the interpretation of the poem is subject to the type of reading. In Fatimid poetry we found out that the hunting-journey is a journey of hidden esoteric knowledge; the Horse is al-Naqib, a religious rank of the investigator and missionary; the Lion is Ali Ibn Abi Talib. The words black and white, day and night, bird, death and murder have different meanings and indications. Our study points out the importance of reading certain poems in certain periods in two different ways: the first depends on a doctrinal interpretation that transforms the external apparent (岷撃乭er) meanings into internal inner hidden esoteric (b膩峁璭n) ones; the second depends on the interpretation of antithetical relationships between the words in order to reveal meanings that the poet hid for a reader who participates in the processes of creativity. The second conclusion is that the classical poem employed symbols, oxymora and antonymous and antithetical forms to create two poetic texts in one mold and form. We can conclude that this study is pioneering in showing the constant paradoxical relationship between the apparent and the hidden meanings in classical and modern Arabic poetry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=apparent" title="apparent">apparent</a>, <a href="https://publications.waset.org/abstracts/search?q=symbol" title=" symbol"> symbol</a>, <a href="https://publications.waset.org/abstracts/search?q=hidden" title=" hidden"> hidden</a>, <a href="https://publications.waset.org/abstracts/search?q=antithetical" title=" antithetical"> antithetical</a>, <a href="https://publications.waset.org/abstracts/search?q=oxymoron" title=" oxymoron"> oxymoron</a>, <a href="https://publications.waset.org/abstracts/search?q=Sophism" title=" Sophism"> Sophism</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatimid%20poetry" title=" Fatimid poetry"> Fatimid poetry</a> </p> <a href="https://publications.waset.org/abstracts/56634/a-fine-string-between-weaving-the-text-and-patching-it-reading-beyond-the-hidden-symbols-and-antithetical-relationships-in-the-classical-and-modern-arabic-poetry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56634.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">262</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">1</span> Implementation of Deep Neural Networks for Pavement Condition Index Prediction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Sirhan">M. Sirhan</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Bekhor"> S. Bekhor</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Sidess"> A. Sidess</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In-service pavements deteriorate with time due to traffic wheel loads, environment, and climate conditions. Pavement deterioration leads to a reduction in their serviceability and structural behavior. Consequently, proper maintenance and rehabilitation (M&R) are necessary actions to keep the in-service pavement network at the desired level of serviceability. Due to resource and financial constraints, the pavement management system (PMS) prioritizes roads most in need of maintenance and rehabilitation action. It recommends a suitable action for each pavement based on the performance and surface condition of each road in the network. The pavement performance and condition are usually quantified and evaluated by different types of roughness-based and stress-based indices. Examples of such indices are Pavement Serviceability Index (PSI), Pavement Serviceability Ratio (PSR), Mean Panel Rating (MPR), Pavement Condition Rating (PCR), Ride Number (RN), Profile Index (PI), International Roughness Index (IRI), and Pavement Condition Index (PCI). PCI is commonly used in PMS as an indicator of the extent of the distresses on the pavement surface. PCI values range between 0 and 100; where 0 and 100 represent a highly deteriorated pavement and a newly constructed pavement, respectively. The PCI value is a function of distress type, severity, and density (measured as a percentage of the total pavement area). PCI is usually calculated iteratively using the 'Paver' program developed by the US Army Corps. The use of soft computing techniques, especially Artificial Neural Network (ANN), has become increasingly popular in the modeling of engineering problems. ANN techniques have successfully modeled the performance of the in-service pavements, due to its efficiency in predicting and solving non-linear relationships and dealing with an uncertain large amount of data. Typical regression models, which require a pre-defined relationship, can be replaced by ANN, which was found to be an appropriate tool for predicting the different pavement performance indices versus different factors as well. Subsequently, the objective of the presented study is to develop and train an ANN model that predicts the PCI values. The model鈥檚 input consists of percentage areas of 11 different damage types; alligator cracking, swelling, rutting, block cracking, longitudinal/transverse cracking, edge cracking, shoving, raveling, potholes, patching, and lane drop off, at three severity levels (low, medium, high) for each. The developed model was trained using 536,000 samples and tested on 134,000 samples. The samples were collected and prepared by The National Transport Infrastructure Company. The predicted results yielded satisfactory compliance with field measurements. The proposed model predicted PCI values with relatively low standard deviations, suggesting that it could be incorporated into the PMS for PCI determination. It is worth mentioning that the most influencing variables for PCI prediction are damages related to alligator cracking, swelling, rutting, and potholes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=artificial%20neural%20networks" title="artificial neural networks">artificial neural networks</a>, <a href="https://publications.waset.org/abstracts/search?q=computer%20programming" title=" computer programming"> computer programming</a>, <a href="https://publications.waset.org/abstracts/search?q=pavement%20condition%20index" title=" pavement condition index"> pavement condition index</a>, <a href="https://publications.waset.org/abstracts/search?q=pavement%20management" title=" pavement management"> pavement management</a>, <a href="https://publications.waset.org/abstracts/search?q=performance%20prediction" title=" performance prediction"> performance prediction</a> </p> <a 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