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wrapping</title> <meta name="description" content="Search results for: phase wrapping"> <meta name="keywords" content="phase wrapping"> <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 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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="phase wrapping"> <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> 4482</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: phase wrapping</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4482</span> Wrapping–Decorative Movement of Time</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rudranil%20Das">Rudranil Das</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wrapping is a basic textile technique; it is having a great quality of decorative view. Since long back it has been embellishing life of people and their culture in different forms. It links cultures, beliefs, thoughts, technology, and above all, people. Through etymology we can study the movement of the word power of wrapping undoubtedly but in depth analyze it could provide many concepts of structural ability. Only in India, more than 105 different processes exist in the way of saree [a type of women attire] wrapping. Then many more other clothing we found in allover world which connects this technique and construction too. One of the main objectives of this study is to enrich wrapping explanation and come up with surfaces by this technique. The deliberate more fragile and stretchable structural framework makes it more appropriate in different users according to their necessity. Developments of design and technology could create new industry segment and generate a marginalized employment for the people too. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concept" title="concept">concept</a>, <a href="https://publications.waset.org/abstracts/search?q=existence" title=" existence"> existence</a>, <a href="https://publications.waset.org/abstracts/search?q=philosophical%20attachment" title=" philosophical attachment"> philosophical attachment</a>, <a href="https://publications.waset.org/abstracts/search?q=technological%20advancement" title=" technological advancement"> technological advancement</a> </p> <a href="https://publications.waset.org/abstracts/32000/wrapping-decorative-movement-of-time" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32000.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">231</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">4481</span> An Analysis of Packaging Materials for an Energy-Efficient Wrapping System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=John%20Sweeney">John Sweeney</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Leeming"> Martin Leeming</a>, <a href="https://publications.waset.org/abstracts/search?q=Raj%20Thaker"> Raj Thaker</a>, <a href="https://publications.waset.org/abstracts/search?q=Cristina%20L.%20Tuinea-Bobe"> Cristina L. Tuinea-Bobe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Shrink wrapping is widely used as a method for secondary packaging to assemble individual items, such as cans or other consumer products, into single packages. This method involves conveying the packages into heated tunnels and so has the disadvantages that it is energy-intensive, and, in the case of aerosol products, potentially hazardous. We are developing an automated packaging system that uses stretch wrapping to address both these problems, by using a mechanical rather than a thermal process. In this study, we present a comparative study of shrink wrapping and stretch wrapping materials to assess the relative capability of candidate stretch wrap polymer film in terms of mechanical response. The stretch wrap materials are of oriented polymer and therefore elastically anisotropic. We are developing material constitutive models that include both anisotropy and nonlinearity. These material models are to be incorporated into computer simulations of the automated stretch wrapping system. We present results showing the validity of these models and the feasibility of applying them in the simulations. <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=polymer" title=" polymer"> polymer</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20testing" title=" mechanical testing"> mechanical testing</a>, <a href="https://publications.waset.org/abstracts/search?q=wrapping%20system" title=" wrapping system"> wrapping system</a> </p> <a href="https://publications.waset.org/abstracts/82971/an-analysis-of-packaging-materials-for-an-energy-efficient-wrapping-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82971.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">293</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">4480</span> Effect of Different FRP Wrapping and Thickness of Concrete Cover on Fatigue Bond Strength of Spliced Concrete Beam </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rayed%20Alyousef">Rayed Alyousef</a>, <a href="https://publications.waset.org/abstracts/search?q=Tim%20Topper"> Tim Topper</a>, <a href="https://publications.waset.org/abstracts/search?q=Adil%20Al-Mayah"> Adil Al-Mayah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents results of an ongoing research program at University of Waterloo to study the effect of external FRP sheet wrap confinement along a lap splice of reinforced concrete (RC) beams on their fatigue bond strength. Fatigue loading of RC beams containing a lap splice resulted in an increase in the number and width of cracks, an increase in deflection and a decrease of the bond strength between the steel rebar and the surrounding concrete. The phase of the research described here consists of monotonic and fatigue tests of thirty two reinforced concrete beam with dimensions 2200⨉350⨉250 mm. Each beam was reinforced with two 20M bars lap spliced in the constant moment region of the tension zone and two 10M bars in the compression zone outside the constant moment region. The test variables were the presence or absence of a FRP wrapping, the type of the FRP wrapping (GFRP or CFRP), the type of loading and the fatigue load range. The test results for monotonic loading showed that the stiffness of all beams was almost same, but that the FRP sheet wrapping increased the bond strength and the deflection at ultimate load. All beams tested under fatigue loading failed by a bond failure except one CFRP wrapped beam that failed by fatigue of the main reinforcement. The FRP sheet increased the bond strength for all specimens under fatigue loading. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=lap%20splice" title="lap splice">lap splice</a>, <a href="https://publications.waset.org/abstracts/search?q=bond%20strength" title=" bond strength"> bond strength</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue%20loading" title=" fatigue loading"> fatigue loading</a>, <a href="https://publications.waset.org/abstracts/search?q=FRP" title=" FRP"> FRP</a> </p> <a href="https://publications.waset.org/abstracts/34597/effect-of-different-frp-wrapping-and-thickness-of-concrete-cover-on-fatigue-bond-strength-of-spliced-concrete-beam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34597.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">293</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">4479</span> Modeling of the Cellular Uptake of Rigid Nanoparticles: Investigating the Influence of the Adaptation of the Cell’s Mechanical Properties during Endocytosis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarah%20Iaquinta">Sarah Iaquinta</a>, <a href="https://publications.waset.org/abstracts/search?q=Christophe%20Blanquart"> Christophe Blanquart</a>, <a href="https://publications.waset.org/abstracts/search?q=Elena%20Ishow"> Elena Ishow</a>, <a href="https://publications.waset.org/abstracts/search?q=Sylvain%20%20Freour"> Sylvain Freour</a>, <a href="https://publications.waset.org/abstracts/search?q=Frederic%20Jacquemin"> Frederic Jacquemin</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahram%20Khazaie"> Shahram Khazaie</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nanoparticles have recently emerged as a possible cancer treatment tool. Several formulations have been used to enhance the uptake of these nanoparticles by cancer cells and avoid their immediate clearance when administrated in vivo. Most of the previous studies focus on the investigation of the influence of the mechanical properties of the cell membrane and the particle. However, these studies do not account for the variation of adhesion and tension during the wrapping of the nanoparticle by the membrane. These couplings should be considered since the cell adapts to the interaction with the nanoparticle by, e.g., increasing the number of interactions (consequently leading to an increase of the cell membrane/nanoparticle adhesion) and by reorganizing its cytoskeleton, leading to the releasing of the tension of the cell membrane. The main contribution of this work is the proposal of a novel model for representing the cellular uptake of rigid circular nanoparticles based on an energetic model tailored to take into account the adaptation of the nanoparticle/cell membrane adhesion and of the membrane stress during wrapping. Several coupling models using sigmoidal functions are considered and compared. The study calculations revealed that the results considering constant parameters underestimated the final wrapping degree of the particle by up to 50%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesion" title="adhesion">adhesion</a>, <a href="https://publications.waset.org/abstracts/search?q=cellular%20adaptation" title=" cellular adaptation"> cellular adaptation</a>, <a href="https://publications.waset.org/abstracts/search?q=cellular%20uptake" title=" cellular uptake"> cellular uptake</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=tension" title=" tension"> tension</a> </p> <a href="https://publications.waset.org/abstracts/138624/modeling-of-the-cellular-uptake-of-rigid-nanoparticles-investigating-the-influence-of-the-adaptation-of-the-cells-mechanical-properties-during-endocytosis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/138624.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">213</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">4478</span> Repair and Strengthening of Plain and FRC Shear Deficient Beams Using Externally Bonded CFRP Sheets</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20S.%20S.%20Abou%20El-Mal">H. S. S. Abou El-Mal</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20E.%20M.%20Sallam"> H. E. M. Sallam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents experimental and analytical study on the behavior of repaired and strengthened shear critical RC beams using externally bonded CFRP bi-directional fabrics. The use of CFRP sheets to repair or strengthen RC beams has been repetitively studied and proven feasible. However, the use of combined repair techniques and applying that method to both plain and FRC beams can maximize the shear capacity of RC shear deficient beams. A total of twelve slender beams were tested under four-point bending. The test parameters included CFRP layout, number of layers and fiber direction, injecting cracks before applying repairing sheets, enhancing the flexural capacity to differentiate between shear repair and strengthening techniques, and concrete matrix types. The findings revealed that applying CFRP sheets increased the overall shear capacity, the amount and orientation of wrapping is of prime importance in both repairing and strengthening, CFRP wrapping could change the failure mode from shear to flexural shear, the use of crack injection combined to CFRP wrapping further improved the shear capacity while, applying the previous method to FRC beams enhanced both shear capacity and failure ductility. Acceptable agreement was found between predicted shear capacities using the Canadian code and the experimental results of the current study. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CFRP" title="CFRP">CFRP</a>, <a href="https://publications.waset.org/abstracts/search?q=FRC" title=" FRC"> FRC</a>, <a href="https://publications.waset.org/abstracts/search?q=repair" title=" repair"> repair</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20strengthening" title=" shear strengthening"> shear strengthening</a> </p> <a href="https://publications.waset.org/abstracts/28345/repair-and-strengthening-of-plain-and-frc-shear-deficient-beams-using-externally-bonded-cfrp-sheets" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28345.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">349</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">4477</span> Topological Quantum Diffeomorphisms in Field Theory and the Spectrum of the Space-Time </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Francisco%20Bulnes">Francisco Bulnes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Through the Fukaya conjecture and the wrapped Floer cohomology, the correspondences between paths in a loop space and states of a wrapping space of states in a Hamiltonian space (the ramification of field in this case is the connection to the operator that goes from <em>TM</em> to <em>T*M</em>) are demonstrated where these last states are corresponding to bosonic extensions of a spectrum of the space-time or direct image of the functor Spec, on space-time. This establishes a distinguished diffeomorphism defined by the mapping from the corresponding loops space to wrapping category of the Floer cohomology complex which furthermore relates in certain proportion <em>D</em>-branes (certain <em>D</em>-modules) with strings. This also gives to place to certain conjecture that establishes equivalences between moduli spaces that can be consigned in a moduli identity taking as space-time the Hitchin moduli space on <em>G</em>, whose dual can be expressed by a factor of a bosonic moduli spaces. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Floer%20cohomology" title="Floer cohomology">Floer cohomology</a>, <a href="https://publications.waset.org/abstracts/search?q=Fukaya%20conjecture" title=" Fukaya conjecture"> Fukaya conjecture</a>, <a href="https://publications.waset.org/abstracts/search?q=Lagrangian%20submanifolds" title=" Lagrangian submanifolds"> Lagrangian submanifolds</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20topological%20diffeomorphism" title=" quantum topological diffeomorphism"> quantum topological diffeomorphism</a> </p> <a href="https://publications.waset.org/abstracts/62462/topological-quantum-diffeomorphisms-in-field-theory-and-the-spectrum-of-the-space-time" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62462.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">310</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">4476</span> Phase Shifter with Frequency Adaptive Control Circuit</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hussein%20Shaman">Hussein Shaman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study introduces an innovative design for an RF phase shifter that can maintain a consistent phase shift across a broad spectrum of frequencies. The proposed design integrates an adaptive control system into a reflective-type phase shifter, typically showing frequency-related variations. Adjusting the DC voltage according to the frequency ensures a more reliable phase shift across the frequency span of operation. In contrast, conventional frequency-dependent reflective-type phase shifters may exhibit significant fluctuations in phase shifts exceeding 60 degrees in the same bandwidth. The proposed phase shifter is configured to deliver a 90-degree operation with an expected deviation of around 15 degrees. The fabrication of the phase shifter and adaptive control circuit has been verified through experimentation, with the measured outcomes aligning with the simulation results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phase%20shifter" title="phase shifter">phase shifter</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptive%20control" title=" adaptive control"> adaptive control</a>, <a href="https://publications.waset.org/abstracts/search?q=varactors" title=" varactors"> varactors</a>, <a href="https://publications.waset.org/abstracts/search?q=electronic%20circuits." title=" electronic circuits."> electronic circuits.</a> </p> <a href="https://publications.waset.org/abstracts/182584/phase-shifter-with-frequency-adaptive-control-circuit" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182584.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">64</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">4475</span> Effect of the Concrete Cover on the Bond Strength of the FRP Wrapped and Non-Wrapped Reinforced Concrete Beam with Lap Splice under Uni-Direction Cyclic Loading</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rayed%20Alyousef">Rayed Alyousef</a>, <a href="https://publications.waset.org/abstracts/search?q=Tim%20Topper"> Tim Topper</a>, <a href="https://publications.waset.org/abstracts/search?q=Adil%20Al-Mayah"> Adil Al-Mayah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Many of the reinforced concrete structures subject to cyclic load constructed before the modern bond and fatigue design code. One of the main issue face on exists structure is the bond strength of the longitudinal steel bar and the surrounding concrete. A lap splice is a common connection method to transfer the force between the steel rebar in a reinforced concrete member. Usually, the lap splice is the weak connection on the bond strength. Fatigue flexural loading imposes severe demands on the strength and ductility of the lap splice region in reinforced concrete structures and can lead to a brittle and sudden failure of the member. This paper investigates the effect of different concrete covers on the fatigue bond strength of reinforcing concrete beams containing a lap splice under a fatigue loads. It includes tests of thirty-seven beams divided into three groups. Each group has beams with 30 mm and 50 mm clear side and bottom concrete covers. The variables that were addressed where the concrete cover, the presence or absence of CFRP or GFRP sheet wrapping, the type of loading (monotonic or fatigue) and the fatigue load ranges. The test results showed that an increase in the concrete cover led to an increase in the bond strength under both monotonic and fatigue loading for both the unwrapped and wrapped beams. Also, the FRP sheets increased both the fatigue strength and the ductility for both the 30 mm and the 50 mm concrete covers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bond%20strength" title="bond strength">bond strength</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue" title=" fatigue"> fatigue</a>, <a href="https://publications.waset.org/abstracts/search?q=Lap%20splice" title=" Lap splice"> Lap splice</a>, <a href="https://publications.waset.org/abstracts/search?q=FRp%20wrapping" title=" FRp wrapping"> FRp wrapping</a> </p> <a href="https://publications.waset.org/abstracts/34465/effect-of-the-concrete-cover-on-the-bond-strength-of-the-frp-wrapped-and-non-wrapped-reinforced-concrete-beam-with-lap-splice-under-uni-direction-cyclic-loading" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34465.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">489</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">4474</span> Influence of AAR-Induced Expansion Level on Confinement Efficiency of CFRP Wrapping Applied to Damaged Circular Concrete Columns</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thamer%20Kubat">Thamer Kubat</a>, <a href="https://publications.waset.org/abstracts/search?q=Riadh%20Al%20Mahiadi"> Riadh Al Mahiadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Shayan"> Ahmad Shayan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The alkali-aggregate reaction (AAR) in concrete has a negative influence on the mechanical properties and durability of concrete. Confinement by carbon fiber reinforced polymer (CFRP) is an effective method of treatment for some AAR-affected elements. Eighteen reinforced columns affected by different levels of expansion due to AAR were confined using CFRP to evaluate the effect of expansion level on confinement efficiency. Strength and strain capacities (axial and circumferential) were measured using photogrammetry under uniaxial compressive loading to evaluate the efficiency of CFRP wrapping for the rehabilitation of affected columns. In relation to uniaxial compression capacity, the results indicated that the confinement of AAR-affected columns by one layer of CFRP is sufficient to reach and exceed the load capacity of unaffected sound columns. Parallel to the experimental study, finite element (FE) modeling using ATENA software was employed to predict the behavior of CFRP-confined damaged concrete and determine the possibility of using the model in a parametric study by simulating the number of CFRP layers. A comparison of the experimental results with the results of the theoretical models showed that FE modeling could be used for the prediction of the behavior of confined AAR-damaged concrete. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ATENA" title="ATENA">ATENA</a>, <a href="https://publications.waset.org/abstracts/search?q=carbon%20fiber%20reinforced%20polymer%20%28CFRP%29" title=" carbon fiber reinforced polymer (CFRP)"> carbon fiber reinforced polymer (CFRP)</a>, <a href="https://publications.waset.org/abstracts/search?q=confinement%20efficiency" title=" confinement efficiency"> confinement efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20%28FE%29" title=" finite element (FE)"> finite element (FE)</a> </p> <a href="https://publications.waset.org/abstracts/160404/influence-of-aar-induced-expansion-level-on-confinement-efficiency-of-cfrp-wrapping-applied-to-damaged-circular-concrete-columns" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/160404.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">76</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">4473</span> Frequency-Dependent and Full Range Tunable Phase Shifter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yufu%20Yin">Yufu Yin</a>, <a href="https://publications.waset.org/abstracts/search?q=Tao%20Lin"> Tao Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Shanghong%20Zhao"> Shanghong Zhao</a>, <a href="https://publications.waset.org/abstracts/search?q=Zihang%20Zhu"> Zihang Zhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xuan%20Li"> Xuan Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Jiang"> Wei Jiang</a>, <a href="https://publications.waset.org/abstracts/search?q=Qiurong%20Zheng"> Qiurong Zheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Hui%20Wang"> Hui Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a frequency-dependent and tunable phase shifter is proposed and numerically analyzed. The key devices are the dual-polarization binary phase shift keying modulator (DP-BPSK) and the fiber Bragg grating (FBG). The phase-frequency response of the FBG is employed to determine the frequency-dependent phase shift. The simulation results show that a linear phase shift of the recovered output microwave signal which depends on the frequency of the input RF signal is achieved. In addition, by adjusting the power of the RF signal, the full range phase shift from 0° to 360° can be realized. This structure shows the spurious free dynamic range (SFDR) of 70.90 dB·Hz<sup>2/3</sup> and 72.11 dB·Hz<sup>2/3</sup> under different RF powers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microwave%20photonics" title="microwave photonics">microwave photonics</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20shifter" title=" phase shifter"> phase shifter</a>, <a href="https://publications.waset.org/abstracts/search?q=spurious%20free%20dynamic%20range" title=" spurious free dynamic range"> spurious free dynamic range</a>, <a href="https://publications.waset.org/abstracts/search?q=frequency-dependent" title=" frequency-dependent"> frequency-dependent</a> </p> <a href="https://publications.waset.org/abstracts/95223/frequency-dependent-and-full-range-tunable-phase-shifter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/95223.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">296</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">4472</span> Influence of Alkali Aggregate Reaction Induced Expansion Level on Confinement Efficiency of Carbon Fiber Reinforcement Polymer Wrapping Applied to Damaged Concrete Columns</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thamer%20Kubat">Thamer Kubat</a>, <a href="https://publications.waset.org/abstracts/search?q=Riadh%20Al-Mahaidi"> Riadh Al-Mahaidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Shayan"> Ahmad Shayan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The alkali-aggregate reaction (AAR) in concrete has a negative influence on the mechanical properties and durability of concrete. Confinement by carbon fibre-reinforced polymer (CFRP) is an effective method of treatment for some AAR-affected elements. Eighteen reinforced columns affected by different levels of expansion due to AAR were confined using CFRP to evaluate the effect of expansion level on confinement efficiency. Strength and strain capacities (axial and circumferential) were measured using photogrammetry under uniaxial compressive loading to evaluate the efficiency of CFRP wrapping for the rehabilitation of affected columns. In relation to uniaxial compression capacity, the results indicated that the confinement of AAR-affected columns by one layer of CFRP is sufficient to reach and exceed the load capacity of unaffected sound columns. Parallel to the experimental study, finite element (FE) modeling using ATENA software was employed to predict the behavior of CFRP-confined damaged concrete and determine the possibility of using the model in a parametric study by simulating the number of CFRP layers. A comparison of the experimental results with the results of the theoretical models showed that FE modeling could be used for the prediction of the behavior of confined AAR-damaged concrete. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20fiber%20reinforced%20polymer%20%28CFRP%29" title="carbon fiber reinforced polymer (CFRP)">carbon fiber reinforced polymer (CFRP)</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20%28FE%29" title=" finite element (FE)"> finite element (FE)</a>, <a href="https://publications.waset.org/abstracts/search?q=ATENA" title=" ATENA"> ATENA</a>, <a href="https://publications.waset.org/abstracts/search?q=confinement%20efficiency" title=" confinement efficiency"> confinement efficiency</a> </p> <a href="https://publications.waset.org/abstracts/166174/influence-of-alkali-aggregate-reaction-induced-expansion-level-on-confinement-efficiency-of-carbon-fiber-reinforcement-polymer-wrapping-applied-to-damaged-concrete-columns" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166174.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">78</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">4471</span> Experimental Study on Flooding Phenomena in a Three-Phase Direct Contact Heat Exchanger for the Utilisation in Solar Pond Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hameed%20B.%20Mahood">Hameed B. Mahood</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Sh.%20Baqir"> Ali Sh. Baqir</a>, <a href="https://publications.waset.org/abstracts/search?q=Alasdair%20N.%20Campbell"> Alasdair N. Campbell</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Experiments to study the limitation of flooding inception of three-phase direct contact condenser have been carried out in a counter-current small diameter vertical condenser. The total column height was 70 cm and 4 cm diameter. Only 48 cm has been used as an active three-phase direct contact condenser height. Vapour pentane with three different initial temperatures (40, 43.5 and 47.5 °C) and water with a constant temperature (19 °C) have been used as a dispersed phase and a continuous phase respectively. Five different continuous phase mass flow rate and four different dispersed phase mass flow rate have been tested throughout the experiments. Dimensionless correlation based on the previous common flooding correlation is proposed to calculate the up flow flooding inception of the three-phase direct contact condenser. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Three-phase%20heat%20exchanger" title="Three-phase heat exchanger">Three-phase heat exchanger</a>, <a href="https://publications.waset.org/abstracts/search?q=condenser" title=" condenser"> condenser</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20energy" title=" solar energy"> solar energy</a>, <a href="https://publications.waset.org/abstracts/search?q=flooding%20phenomena" title=" flooding phenomena"> flooding phenomena</a> </p> <a href="https://publications.waset.org/abstracts/57093/experimental-study-on-flooding-phenomena-in-a-three-phase-direct-contact-heat-exchanger-for-the-utilisation-in-solar-pond-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57093.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">339</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">4470</span> A New Spell-Out Mechanism</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yusra%20Yahya">Yusra Yahya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a new spell-out mechanism is developed and defended. This mechanism builds on the role of phase heads as both the loci of spell-out features and the transfer triggers via either Phase Impenetrability Condition 1 (PIC1) and/or Phase Impenetrability Condition 2 (PIC2). The assumption here is that phase heads, mainly v*, can regulate the spell-out process by deciding both the type of spell-out applying and the timing of spell-out relevant. This paper also proposes a new form of the constraint Wrap call it Wrap-XP’ and it is assumed to apply to IP as a functional maximal projection. This extension is shown to fall as a natural result once we assume the new theory of phases and multiple spell-out. Moreover, it is proposed in this work that some forms of XP movement are not motivated by an EPP feature of a strong phase head mainly v*, but they are rather motivated by a last resort strategy to accomplish the spell-out instruction of this phase head. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=linguistics" title="linguistics">linguistics</a>, <a href="https://publications.waset.org/abstracts/search?q=syntax" title=" syntax"> syntax</a>, <a href="https://publications.waset.org/abstracts/search?q=phonology" title=" phonology"> phonology</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20theory" title=" phase theory"> phase theory</a>, <a href="https://publications.waset.org/abstracts/search?q=optimality%20theory" title=" optimality theory"> optimality theory</a> </p> <a href="https://publications.waset.org/abstracts/37580/a-new-spell-out-mechanism" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37580.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">514</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">4469</span> Generalized Mean-Field Theory of Phase Unwrapping via Multiple Interferograms</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yohei%20Saika">Yohei Saika</a> </p> <p class="card-text"><strong>Abstract:</strong></p> On the basis of Bayesian inference using the maximizer of the posterior marginal estimate, we carry out phase unwrapping using multiple interferograms via generalized mean-field theory. Numerical calculations for a typical wave-front in remote sensing using the synthetic aperture radar interferometry, phase diagram in hyper-parameter space clarifies that the present method succeeds in phase unwrapping perfectly under the constraint of surface- consistency condition, if the interferograms are not corrupted by any noises. Also, we find that prior is useful for extending a phase in which phase unwrapping under the constraint of the surface-consistency condition. These results are quantitatively confirmed by the Monte Carlo simulation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bayesian%20inference" title="Bayesian inference">Bayesian inference</a>, <a href="https://publications.waset.org/abstracts/search?q=generalized%20mean-field%20theory" title=" generalized mean-field theory"> generalized mean-field theory</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20unwrapping" title=" phase unwrapping"> phase unwrapping</a>, <a href="https://publications.waset.org/abstracts/search?q=multiple%20interferograms" title=" multiple interferograms"> multiple interferograms</a>, <a href="https://publications.waset.org/abstracts/search?q=statistical%20mechanics" title=" statistical mechanics"> statistical mechanics</a> </p> <a href="https://publications.waset.org/abstracts/11354/generalized-mean-field-theory-of-phase-unwrapping-via-multiple-interferograms" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11354.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">479</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">4468</span> Estimation of Harmonics in Three-Phase and Six-Phase-Phase (Multi-Phase) Load Circuits</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zakir%20Husain">Zakir Husain</a>, <a href="https://publications.waset.org/abstracts/search?q=Deepak%20Kumar"> Deepak Kumar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The harmonics are very harmful within an electrical system and can have serious consequences such as reducing the life of apparatus, stress on cable and equipment etc. This paper cites extensive analytical study of harmonic characteristics of multiphase (six-phase) and three-phase system equipped with two and three level inverters for non-linear loads. Multilevel inverter has elevated voltage capability with voltage limited devices, low harmonic distortion, abridged switching losses. Multiphase technology also pays a promising role in harmonic reduction. Matlab simulation is carried out to compare the advantage of multi-phase over three phase systems equipped with two or three level inverters for non-linear load harmonic reduction. The extensive simulation results are presented based on case studies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fast%20Fourier%20transform%20%28FFT%29" title="fast Fourier transform (FFT)">fast Fourier transform (FFT)</a>, <a href="https://publications.waset.org/abstracts/search?q=harmonics" title=" harmonics"> harmonics</a>, <a href="https://publications.waset.org/abstracts/search?q=inverter" title=" inverter"> inverter</a>, <a href="https://publications.waset.org/abstracts/search?q=ripples" title=" ripples"> ripples</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20harmonic%20distortion%20%28THD%29" title=" total harmonic distortion (THD)"> total harmonic distortion (THD)</a> </p> <a href="https://publications.waset.org/abstracts/11824/estimation-of-harmonics-in-three-phase-and-six-phase-phase-multi-phase-load-circuits" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11824.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">554</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">4467</span> Gas-Liquid Two Phase Flow Phenomenon in Near Horizontal Upward and Downward Inclined Pipe Orientations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Afshin%20J.%20Ghajar">Afshin J. Ghajar</a>, <a href="https://publications.waset.org/abstracts/search?q=Swanand%20M.%20Bhagwat"> Swanand M. Bhagwat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main purpose of this work is to experimentally investigate the effect of pipe orientation on two phase flow phenomenon. Flow pattern, void fraction and two phase pressure drop is measured in a polycarbonate pipe with an inside diameter of 12.7mm for inclination angles ranging from -20° to +20° using air-water fluid combination. The experimental data covers all flow patterns and the entire range of void fraction typically observed in two phase flow. The effect of pipe orientation on void fraction and two phase pressure drop is justified with reference to the change in flow structure and two phase flow behavior. In addition to this, the top performing void fraction and two phase pressure drop correlations available in the literature are presented and their performance is assessed against the experimental data in the present study and that available in the literature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flow%20patterns" title="flow patterns">flow patterns</a>, <a href="https://publications.waset.org/abstracts/search?q=inclined%20two%20phase%20flow" title=" inclined two phase flow"> inclined two phase flow</a>, <a href="https://publications.waset.org/abstracts/search?q=pressure%20drop" title=" pressure drop"> pressure drop</a>, <a href="https://publications.waset.org/abstracts/search?q=void%20fraction" title=" void fraction "> void fraction </a> </p> <a href="https://publications.waset.org/abstracts/6215/gas-liquid-two-phase-flow-phenomenon-in-near-horizontal-upward-and-downward-inclined-pipe-orientations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6215.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">681</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">4466</span> Damage in Cementitious Materials Exposed to Sodium Chloride Solution and Thermal Cycling: The Effect of Using Supplementary Cementitious Materials </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fadi%20Althoey">Fadi Althoey</a>, <a href="https://publications.waset.org/abstracts/search?q=Yaghoob%20Farnam"> Yaghoob Farnam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sodium chloride (NaCl) can interact with the tricalcium aluminate (C3A) and its hydrates in concrete matrix. This interaction can result in formation of a harmful chemical phase as the temperature changes. It is thought that this chemical phase is embroiled in the premature concrete deterioration in the cold regions. This work examines the potential formation of the harmful chemical phase in various pastes prepared by using different types of ordinary portland cement (OPC) and supplementary cementitious materials (SCMs). The quantification of the chemical phase was done by using a low temperature differential scanning calorimetry. The results showed that the chemical phase formation can be reduced by using Type V cement (low content of C3A). The use of SCMs showed different behaviors on the formation of the chemical phase. Slag and Class F fly ash can reduce the chemical phase by the dilution of cement whereas silica fume can reduce the amount of the chemical phase by dilution and pozzolanic activates. Interestingly, the use of Class C fly ash has a negative effect on concrete exposed to NaCl through increasing the formation of the chemical phase. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concrete" title="concrete">concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=damage" title=" damage"> damage</a>, <a href="https://publications.waset.org/abstracts/search?q=chemcial%20phase" title=" chemcial phase"> chemcial phase</a>, <a href="https://publications.waset.org/abstracts/search?q=NaCl" title=" NaCl"> NaCl</a>, <a href="https://publications.waset.org/abstracts/search?q=SCMs" title=" SCMs"> SCMs</a> </p> <a href="https://publications.waset.org/abstracts/123461/damage-in-cementitious-materials-exposed-to-sodium-chloride-solution-and-thermal-cycling-the-effect-of-using-supplementary-cementitious-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/123461.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">144</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">4465</span> Design and Simulation a Low Phase Noise CMOS LC VCO for IEEE802.11a WLAN Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hooman%20Kaabi">Hooman Kaabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Raziyeh%20Karkoub"> Raziyeh Karkoub</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work proposes a structure of AMOS-varactors. A 5GHz LC-VCO designed in TSMC 0.18μm CMOS to improve phase noise and tuning range performance. The tuning range is from 5.05GHZ to 5.88GHz.The phase noise is -154.9dBc/Hz at 1MHz offset from the carrier. It meets the requirements for IEEE 802.11a WLAN standard. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CMOS%20LC%20VCO" title="CMOS LC VCO">CMOS LC VCO</a>, <a href="https://publications.waset.org/abstracts/search?q=spiral%20inductor" title=" spiral inductor"> spiral inductor</a>, <a href="https://publications.waset.org/abstracts/search?q=varactor" title=" varactor"> varactor</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20noise" title=" phase noise"> phase noise</a>, <a href="https://publications.waset.org/abstracts/search?q=tuning%20range" title=" tuning range"> tuning range</a> </p> <a href="https://publications.waset.org/abstracts/25972/design-and-simulation-a-low-phase-noise-cmos-lc-vco-for-ieee80211a-wlan-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25972.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">536</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">4464</span> Efficiency Improvement of REV-Method for Calibration of Phased Array Antennas</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Hristov">Daniel Hristov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper describes the principle of operation, simulation and physical validation of method for simultaneous acquisition of gain and phase states of multiple antenna elements and the corresponding feed lines across a Phased Array Antenna (PAA). The derived values for gain and phase are used for PAA-calibration. The method utilizes the Rotating-Element Electric- Field Vector (REV) principle currently used for gain and phase state estimation of single antenna element across an active antenna aperture. A significant reduction of procedure execution time is achieved with simultaneous setting of different phase delays to multiple phase shifters, followed by a single power measurement. The initial gain and phase states are calculated using spectral and correlation analysis of the measured power series. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antenna" title="antenna">antenna</a>, <a href="https://publications.waset.org/abstracts/search?q=antenna%20arrays" title=" antenna arrays"> antenna arrays</a>, <a href="https://publications.waset.org/abstracts/search?q=calibration" title=" calibration"> calibration</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20measurement" title=" phase measurement"> phase measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20measurement" title=" power measurement"> power measurement</a> </p> <a href="https://publications.waset.org/abstracts/122649/efficiency-improvement-of-rev-method-for-calibration-of-phased-array-antennas" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/122649.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">4463</span> Pressure Induced Phase Transition and Elastic Properties of Cerium Mononitride</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Namrata%20Yaduvanshi">Namrata Yaduvanshi</a>, <a href="https://publications.waset.org/abstracts/search?q=Shilpa%20Kapoor"> Shilpa Kapoor</a>, <a href="https://publications.waset.org/abstracts/search?q=Pooja%20Pawar"> Pooja Pawar</a>, <a href="https://publications.waset.org/abstracts/search?q=Sadhna%20Singh"> Sadhna Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present paper, we have investigated the high-pressure structural phase transition and elastic properties of cerium mononitride. We studied theoretically the structural properties of this compound (CeN) by using the Improved Interaction Potential Model (IIPM) approach. This compound exhibits first order crystallographic phase transition from NaCl (B1) to tetragonal (BCT) phase at 37 GPa. The phase transition pressures and associated volume collapse obtained from present potential model (IIPM) show a good agreement with available theoretical data. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phase%20transition" title="phase transition">phase transition</a>, <a href="https://publications.waset.org/abstracts/search?q=volume%20collapse" title=" volume collapse"> volume collapse</a>, <a href="https://publications.waset.org/abstracts/search?q=elastic%20constants" title=" elastic constants"> elastic constants</a>, <a href="https://publications.waset.org/abstracts/search?q=three%20body%20interaction" title=" three body interaction"> three body interaction</a> </p> <a href="https://publications.waset.org/abstracts/30520/pressure-induced-phase-transition-and-elastic-properties-of-cerium-mononitride" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30520.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">480</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">4462</span> A Low Insertion Loss Variation 10-35 GHz Phase Shifter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Soroush%20Rasti%20Boroujeni">Soroush Rasti Boroujeni</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Hassan%20Mousavi"> S. Hassan Mousavi</a>, <a href="https://publications.waset.org/abstracts/search?q=Javad%20Ebrahimizadeh"> Javad Ebrahimizadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ardeshir%20Palizban"> Ardeshir Palizban</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad-Reza%20Nezhad-Ahmadi"> Mohammad-Reza Nezhad-Ahmadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Safieddin%20Safavi-Naeini"> Safieddin Safavi-Naeini</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a wideband True Time Delay (TTD) phase shifter with low insertion loss variation. The circuit benefits from a controllable resistive load shunt with transmission line segments to optimize return loss variations, addressing the unbalanced capacitive nature of the varactor. The phase shifter reduces the complexity of the calibration process because the dependency of insertion loss on voltage controls is improved up to 3 dB. The TTD phase shifter provides a continuous changing delay time of 6.4 ps with low insertion loss (IL) in the 10-35 GHz frequency range. The proposed circuit benefits from lowloss phase shifters with a small footprint. Fabricated using a 65 nm CMOC process, the TTD phase shifter occupies only 388 × 615 μm² of chip area, achieving a 20% improvements compared to conventional TTD phase shifters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=millimeter-wave%20phased-array" title="millimeter-wave phased-array">millimeter-wave phased-array</a>, <a href="https://publications.waset.org/abstracts/search?q=true%20time%20delay%20phase%20shifter" title=" true time delay phase shifter"> true time delay phase shifter</a>, <a href="https://publications.waset.org/abstracts/search?q=insertion%20loss%20variation" title=" insertion loss variation"> insertion loss variation</a>, <a href="https://publications.waset.org/abstracts/search?q=compact%20size" title=" compact size"> compact size</a> </p> <a href="https://publications.waset.org/abstracts/193319/a-low-insertion-loss-variation-10-35-ghz-phase-shifter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/193319.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">14</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">4461</span> Study of Cahn-Hilliard Equation to Simulate Phase Separation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nara%20Guimar%C3%A3es">Nara Guimarães</a>, <a href="https://publications.waset.org/abstracts/search?q=Marcelo%20Aquino%20Martorano"> Marcelo Aquino Martorano</a>, <a href="https://publications.waset.org/abstracts/search?q=Douglas%20Gouv%C3%AAa"> Douglas Gouvêa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An investigation into Cahn-Hilliard equation was carried out through numerical simulation to identify a possible phase separation for one and two dimensional domains. It was observed that this equation can reproduce important mass fluxes necessary for phase separation within the miscibility gap and for coalescence of particles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cahn-Hilliard%20equation" title="Cahn-Hilliard equation">Cahn-Hilliard equation</a>, <a href="https://publications.waset.org/abstracts/search?q=miscibility%20gap" title=" miscibility gap"> miscibility gap</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20separation" title=" phase separation"> phase separation</a>, <a href="https://publications.waset.org/abstracts/search?q=dimensional%20domains" title=" dimensional domains"> dimensional domains</a> </p> <a href="https://publications.waset.org/abstracts/17579/study-of-cahn-hilliard-equation-to-simulate-phase-separation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17579.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">517</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">4460</span> Study the Effect of Rubbery Phase on Morphology Development of PP/PA6/(EPDM:EPDM-g-MA) Ternary Blends</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=B.%20Afsari">B. Afsari</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Hassanpour"> M. Hassanpour</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Shabani"> M. Shabani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study aimed to investigate the phase morphology of ternary blends comprising PP, PA6, and a blend of EPDM and EPDM-g-MA in a 70/15/15 ratio. Varying ratios of EPDM to EPDM-g-MA were examined. As the proportion of EPDM-g-MA increased, an interlayer phase formed between the dispersed PA6 domains and the PP matrix. This resulted in the development of a core-shell encapsulation morphology within the blends. The concentration of the EPDM-g-MA component is inversely correlated with the average size of PA6 particles. Additionally, blends containing higher proportions of the EPDM-g-MA rubbery phase exhibited an aggregated structure of the modifier particles. Notably, as the concentration of EPDM-g-MA increased from 0% to 15% in the blend, there was a consistent monotonic reduction in the size of PA6 particles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phase%20morphology" title="phase morphology">phase morphology</a>, <a href="https://publications.waset.org/abstracts/search?q=rubbery%20phase" title=" rubbery phase"> rubbery phase</a>, <a href="https://publications.waset.org/abstracts/search?q=rubber%20functionality" title=" rubber functionality"> rubber functionality</a>, <a href="https://publications.waset.org/abstracts/search?q=ternary%20blends" title=" ternary blends"> ternary blends</a> </p> <a href="https://publications.waset.org/abstracts/182166/study-the-effect-of-rubbery-phase-on-morphology-development-of-pppa6epdmepdm-g-ma-ternary-blends" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182166.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">90</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">4459</span> Five-Phase Induction Motor Drive System Driven by Five-Phase Packed U Cell Inverter: Its Modeling and Performance Evaluation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohd%20Tariq">Mohd Tariq</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The three phase system drives produce the problem of more torque pulsations and harmonics. This issue prevents the smooth operation of the drives and it also induces the amount of heat generated thus resulting in an increase in power loss. Higher phase system offers smooth operation of the machines with greater power capacity. Five phase variable-speed induction motor drives are commonly used in various industrial and commercial applications like tractions, electrical vehicles, ship propulsions and conveyor belt drive system. In this work, a comparative analysis of the different modulation schemes applied on the five-level five-phase Packed U Cell (PUC) inverter fed induction motor drives is presented. The performance of the inverter is greatly affected with the modulation schemes applied. The system is modeled, designed, and implemented in MATLAB<sup>®</sup>/Simulink environment. Experimental validation is done for the prototype of single phase, whereas five phase experimental validation is proposed in the future works. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Packed%20U-Cell%20%28PUC%29%20inverter" title="Packed U-Cell (PUC) inverter">Packed U-Cell (PUC) inverter</a>, <a href="https://publications.waset.org/abstracts/search?q=five-phase%20system" title=" five-phase system"> five-phase system</a>, <a href="https://publications.waset.org/abstracts/search?q=pulse%20width%20modulation%20%28PWM%29" title=" pulse width modulation (PWM)"> pulse width modulation (PWM)</a>, <a href="https://publications.waset.org/abstracts/search?q=induction%20motor%20%28IM%29" title=" induction motor (IM)"> induction motor (IM)</a> </p> <a href="https://publications.waset.org/abstracts/97769/five-phase-induction-motor-drive-system-driven-by-five-phase-packed-u-cell-inverter-its-modeling-and-performance-evaluation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/97769.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">183</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">4458</span> Modelling the Growth of σ-Phase in AISI 347H FG Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yohanes%20Chekol%20Malede">Yohanes Chekol Malede</a> </p> <p class="card-text"><strong>Abstract:</strong></p> σ-phase has negative effects on the corrosion responses and the mechanical properties of steels. The growth of σ-phase in the austenite matrix of AISI 347H FG steel was simulated using DICTRA software using CALPHAD method. The simulation work included the influence of both volume diffusion and grain boundary diffusion. The simulation results showed a good agreement with the experimental findings. The simulation results revealed a Cr-depleted and a Ni-enriched σ-phase/austenite interface. Effects of temperature, grain size, and composition of alloying elements on the growth kinetics of σ-phase were assessed. The simulated results were fitted to the JMAK equation and a good correlation was obtained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AISI%20347H%20FG%20austenitic%20steel" title="AISI 347H FG austenitic steel">AISI 347H FG austenitic steel</a>, <a href="https://publications.waset.org/abstracts/search?q=CALPHAD" title=" CALPHAD"> CALPHAD</a>, <a href="https://publications.waset.org/abstracts/search?q=sigma%20phase" title=" sigma phase"> sigma phase</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure%20evolution" title=" microstructure evolution"> microstructure evolution</a> </p> <a href="https://publications.waset.org/abstracts/123442/modelling-the-growth-of-s-phase-in-aisi-347h-fg-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/123442.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">148</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">4457</span> Tree Dress and the Internet of Living Things</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vibeke%20Sorensen">Vibeke Sorensen</a>, <a href="https://publications.waset.org/abstracts/search?q=Nagaraju%20Thummanapalli"> Nagaraju Thummanapalli</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Stephen%20Lansing"> J. Stephen Lansing</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Inspired by the indigenous people of Borneo, Indonesia and their traditional bark cloth, artist and professor Vibeke Sorensen executed a “digital unwrapping” of several trees in Southeast Asia using a digital panorama camera and digitally “stitched” them together for printing onto sustainable silk and fashioning into the “Tree Dress”. This dress is a symbolic “un-wrapping” and “re-wrapping” of the tree’s bark onto a person as a second skin. The “digital bark” is directly responsive to the real tree through embedded and networked electronics that connect in real-time to sensors at the physical site of the living tree. LEDs and circuits inserted into the dress display the continuous measurement of the O2 / CO2, temperature, humidity, and light conditions at the tree. It is an “Internet of Living Things” (IOLT) textile that can be worn to track and interact with it. The computer system connecting the dress and the tree converts the gas emission data at the site of the real tree into sound and music as sonification. This communicates not only the scientific data but also translates it into a poetic representation. The wearer of the garment can symbolically identify with the tree, or “become one” with it by adorning its “skin.” In this way, the wearer also becomes a human agent for the tree, bringing its actual condition to direct perception of the wearer and others who may engage it. This project is an attempt to bring greater awareness to issues of deforestation by providing a direct access to living things separated by physical distance, and hopefully, to increase empathy for them by providing a way to sense individual trees and their daily existential condition through remote monitoring of data. Further extensions to this project and related issues of sustainability include the use of recycled and alternative plant materials such as bamboo and air plants, among others. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=IOLT" title="IOLT">IOLT</a>, <a href="https://publications.waset.org/abstracts/search?q=sonification" title=" sonification"> sonification</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainability" title=" sustainability"> sustainability</a>, <a href="https://publications.waset.org/abstracts/search?q=tree" title=" tree"> tree</a>, <a href="https://publications.waset.org/abstracts/search?q=wearable%20technology" title=" wearable technology"> wearable technology</a> </p> <a href="https://publications.waset.org/abstracts/129346/tree-dress-and-the-internet-of-living-things" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129346.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">138</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">4456</span> Multi-Band Frequency Conversion Scheme with Multi-Phase Shift Based on Optical Frequency Comb</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tao%20Lin">Tao Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Shanghong%20Zhao"> Shanghong Zhao</a>, <a href="https://publications.waset.org/abstracts/search?q=Yufu%20Yin"> Yufu Yin</a>, <a href="https://publications.waset.org/abstracts/search?q=Zihang%20Zhu"> Zihang Zhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Jiang"> Wei Jiang</a>, <a href="https://publications.waset.org/abstracts/search?q=Xuan%20Li"> Xuan Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Qiurong%20Zheng"> Qiurong Zheng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A simple operated, stable and compact multi-band frequency conversion and multi-phase shift is proposed to satisfy the demands of multi-band communication and radar phase array system. The dual polarization quadrature phase shift keying (DP-QPSK) modulator is employed to support the LO sideband and the optical frequency comb simultaneously. Meanwhile, the fiber is also used to introduce different phase shifts to different sidebands. The simulation result shows that by controlling the DC bias voltages and a C band microwave signal with frequency of 4.5 GHz can be simultaneously converted into other signals that cover from C band to K band with multiple phases. It also verifies that the multi-band and multi-phase frequency conversion system can be stably performed based on current manufacturing art and can well cope with the DC drifting. It should be noted that the phase shift of the converted signal also partly depends of the length of the optical fiber. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microwave%20photonics" title="microwave photonics">microwave photonics</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-band%20frequency%20conversion" title=" multi-band frequency conversion"> multi-band frequency conversion</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-phase%20shift" title=" multi-phase shift"> multi-phase shift</a>, <a href="https://publications.waset.org/abstracts/search?q=conversion%20efficiency" title=" conversion efficiency"> conversion efficiency</a> </p> <a href="https://publications.waset.org/abstracts/96199/multi-band-frequency-conversion-scheme-with-multi-phase-shift-based-on-optical-frequency-comb" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96199.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">254</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">4455</span> Genesis of Entrepreneur Business Models in New Ventures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arash%20Najmaei">Arash Najmaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Jo%20Rhodes"> Jo Rhodes</a>, <a href="https://publications.waset.org/abstracts/search?q=Peter%20Lok"> Peter Lok</a>, <a href="https://publications.waset.org/abstracts/search?q=Zahra%20Sadeghinejad"> Zahra Sadeghinejad </a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this article, we endeavor to explore how a new business model comes into existence in the Australian cloud-computing eco-system. Findings from multiple case study methodology reveal that to develop a business model new ventures adopt a three-phase approach. In the first phase, labelled as business model ideation (BMID) various ideas for a viable business model are generated from both internal and external networks of the entrepreneurial team and the most viable one is chosen. Strategic consensus and commitment are generated in the second phase. This phase is a business modelling strategic action phase. We labelled this phase as business model strategic commitment (BMSC) because through commitment and the subsequent actions of executives resources are pooled, coordinated and allocated to the business model. Three complementary sets of resources shape the business model: managerial (MnRs), marketing (MRs) and technological resources (TRs). The third phase is the market-test phase where the business model is reified through the delivery of the intended value to customers and conversion of revenue into profit. We labelled this phase business model actualization (BMAC). Theoretical and managerial implications of these findings will be discussed and several directions for future research will be illuminated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=entrepreneur%20business%20model" title="entrepreneur business model">entrepreneur business model</a>, <a href="https://publications.waset.org/abstracts/search?q=high-tech%20venture" title=" high-tech venture"> high-tech venture</a>, <a href="https://publications.waset.org/abstracts/search?q=resources" title=" resources"> resources</a>, <a href="https://publications.waset.org/abstracts/search?q=conversion%20of%20revenue" title=" conversion of revenue"> conversion of revenue</a> </p> <a href="https://publications.waset.org/abstracts/9680/genesis-of-entrepreneur-business-models-in-new-ventures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9680.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">445</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">4454</span> A Low Phase Noise CMOS LC Oscillator with Tail Current-Shaping</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amir%20Mahdavi">Amir Mahdavi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a circuit topology of voltage-controlled oscillators (VCO) which is suitable for ultra-low-phase noise operations is introduced. To do so, a new low phase noise cross-coupled oscillator by using the general topology of cross-coupled oscillator and adding a differential stage for tail current shaping is designed. In addition, a tail current shaping technique to improve phase noise in differential LC VCOs is presented. The tail current becomes large when the oscillator output voltage arrives at the maximum or minimum value and when the sensitivity of the output phase to the noise is the smallest. Also, the tail current becomes small when the phase noise sensitivity is large. The proposed circuit does not use extra power and extra noisy active devices. Furthermore, this topology occupies small area. Simulation results show the improvement in phase noise by 2.5dB under the same conditions and at the carrier frequency of 1 GHz for GSM applications. The power consumption of the proposed circuit is 2.44 mW and the figure of merit (FOM) with -192.2 dBc/Hz is achieved for the new oscillator. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=LC%20oscillator" title="LC oscillator">LC oscillator</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20phase%20noise" title=" low phase noise"> low phase noise</a>, <a href="https://publications.waset.org/abstracts/search?q=current%20shaping" title=" current shaping"> current shaping</a>, <a href="https://publications.waset.org/abstracts/search?q=diff%20mode" title=" diff mode"> diff mode</a> </p> <a href="https://publications.waset.org/abstracts/75354/a-low-phase-noise-cmos-lc-oscillator-with-tail-current-shaping" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75354.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">601</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">4453</span> Bubble Growth in a Two Phase Upward Flow in a Miniature Tube</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20S.%20Hassani">R. S. Hassani</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Chikh"> S. Chikh</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Tadrist"> L. Tadrist</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Radev"> S. Radev</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A bubbly flow in a vertical miniature tube is analyzed theoretically. The liquid and gas phase are co-current flowing upward. The gas phase is injected via a nozzle whose inner diameter is 0.11mm and it is placed on the axis of the tube. A force balance is applied on the bubble at its detachment. The set of governing equations are solved by use of Mathematica software. The bubble diameter and the bubble generation frequency are determined for various inlet phase velocities represented by the inlet mass quality. The results show different behavior of bubble growth and detachment depending on the tube size. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=two%20phase%20flow" title="two phase flow">two phase flow</a>, <a href="https://publications.waset.org/abstracts/search?q=bubble%20growth" title=" bubble growth"> bubble growth</a>, <a href="https://publications.waset.org/abstracts/search?q=mini-channel" title=" mini-channel"> mini-channel</a>, <a href="https://publications.waset.org/abstracts/search?q=generation%20frequency" title=" generation frequency"> generation frequency</a> </p> <a href="https://publications.waset.org/abstracts/7322/bubble-growth-in-a-two-phase-upward-flow-in-a-miniature-tube" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7322.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">432</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=phase%20wrapping&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=5">5</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=6">6</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=7">7</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=8">8</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=9">9</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=10">10</a></li> <li class="page-item disabled"><span class="page-link">...</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=149">149</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=150">150</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=phase%20wrapping&page=2" rel="next">&rsaquo;</a></li> 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