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129811 full-text articles. Page 1 of 3587.

Jpk.Pdf, jpk sonick 2018 Eastern Washington University

Jpk.Pdf, Jpk Sonick

jpk sonick

Kami menerima jasa refill tabung pemadam kebakaran untuk berbagai merk yang berada di pasaran dan untuk berbagai media


On Condition Monitoring Of High Switching Frequency Power Gan Converters With Adaptive Prognostics.Pdf, Mehrdad Biglarbegian 2018 University of North Carolina at Charlotte

On Condition Monitoring Of High Switching Frequency Power Gan Converters With Adaptive Prognostics.Pdf, Mehrdad Biglarbegian

Mehrdad Biglarbegian

There is no doubt that in the future, a need for higher switching frequency is inevitable to extract the full benefits of reliable Gallium Nitride (GaN) device characteristics. Along with the reliability enhancement for GaN-based power converters, it is essential to monitor a precursor signature identification for diagnostics/prognostics techniques. With the availability of the most granular information deduced from advanced devices, a new data-driven scheme is proposed for system monitoring and possible lifetime extension of 400W power GaN converters at 100kHz. The approach relies on the real-time R_ds(on) data extraction from the power converter, and calibration of an ...


Multi-Purpose Generic Board For Hands-On Power Electronics Education Of Different Power Converter Topologies In Pv Applications.Pdf, Mehrdad Biglarbegian 2018 University of North Carolina at Charlotte

Multi-Purpose Generic Board For Hands-On Power Electronics Education Of Different Power Converter Topologies In Pv Applications.Pdf, Mehrdad Biglarbegian

Mehrdad Biglarbegian

This paper presents the development of a multi-purpose generic board for hands-on power electronics education lab session focusing on Photovoltaic (PV) power electronics applications. The presented work tries to apply advanced methods for circuit designs and firmware developments of a DC/DC and a DC/AC converter for helping students to get familiar with system/subsystem level learning. The developed advanced converters can be used for interconnection of low voltage PV systems. Besides, the objective is to expedite the transferring of theory to practical purposes and to provide hands-on experiences for the development of power electronics systems.


Development Of Isolated Sensegan Current Monitoring For Boundary Conduction Mode Control Of Power Converters, Mehrdad Biglarbegian 2018 University of North Carolina at Charlotte

Development Of Isolated Sensegan Current Monitoring For Boundary Conduction Mode Control Of Power Converters, Mehrdad Biglarbegian

Mehrdad Biglarbegian

This paper presents the design of the Isolated SenseGaN (Iso-SenseGaN) current sensing technique using Gallium Nitride (GaN) transistors. The isolation technique for the SenseGaN brings an opportunity for integration of sensing element with the power modules, and enables many control schemes in power converters. This could effectively open broader area for smart device monitoring, implementation of current controlling techniques at high frequency, and proper feedback for diagnostics/prognostics developments. In this work, the focus is on the practical challenges for the SenseGaN technique and presenting the inductor-based galvanic isolation. Using the current mirroring method, the authors defined a cursor for ...


Correlation For Sessile Drop Evaporation Over A Wide Range Of Drop Volatilities, Ambient Gases And Pressures, Peter Kelly-Zion, Christopher J. Pursell, Gregory N. Wassom, Brenton V. Mandelkorn, Chris Nkinthorn 2018 Trinity University

Correlation For Sessile Drop Evaporation Over A Wide Range Of Drop Volatilities, Ambient Gases And Pressures, Peter Kelly-Zion, Christopher J. Pursell, Gregory N. Wassom, Brenton V. Mandelkorn, Chris Nkinthorn

Engineering Faculty Research

A correlation for the evaporation of sessile drops over a very broad range of conditions was developed based on measured evaporation rate data obtained for drops of acetone, methanol, and six hydrocarbons ranging from hexane to isooctane, evaporating in air, helium, argon, and krypton, over a range of ambient pressures from 96 kPa to 615 kPa. The experiments were designed to produce a large variation in the rates of diffusion and buoyancy-induced (natural) convection of the vapor phase amongst the experimental conditions. The correlation, which fits the measurements with an RMS relative error of 5.2%, is a simple equation ...


In Operando Mechanism Analysis On Nanocrystalline Silicon Anode Material For Reversible And Ultrafast Sodium Storage, Lei Zhang, Xianluo Hu, Chaoji Chen, Haipeng Guo, Xiaoxiao Liu, Gengzhao Xu, Haijian Zhong, Shuang Cheng, Peng Wu, Jiashen Meng, Yunhui Huang, Shi Xue Dou, Hua-Kun Liu 2018 University of Wollongong

In Operando Mechanism Analysis On Nanocrystalline Silicon Anode Material For Reversible And Ultrafast Sodium Storage, Lei Zhang, Xianluo Hu, Chaoji Chen, Haipeng Guo, Xiaoxiao Liu, Gengzhao Xu, Haijian Zhong, Shuang Cheng, Peng Wu, Jiashen Meng, Yunhui Huang, Shi Xue Dou, Hua-Kun Liu

Australian Institute for Innovative Materials - Papers

Presently, lithium-ion batteries (LIBs) are the most promising commercialized electrochemical energy storage systems. Unfortunately, the limited resource of Li results in increasing cost for its scalable application and a general consciousness of the need to find new type of energy storage technologies. Very recently, substantial effort has been invested to sodium-ion batteries (SIBs) due to their effectively unlimited nature of sodium resources. Furthermore, the potential of Li/Li+ is 0.3 V lower than that of Na/Na+, which makes it more effective to limit the electrolyte degradation on the outer surface of the electrode.[1] Nevertheless, one major obstacle ...


Editorial - Volume 1, 2018, Pp.1-2, Wojciech M. Budzianowski 2018 Wojciech Budzianowski Consulting Services

Editorial - Volume 1, 2018, Pp.1-2, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Monitoring Tylosin And Sulfamethazine In A Tile-Drained Agricultural Watershed Using Polar Organic Chemical Integrative Sampler (Pocis), Maurice T. Washingtion, Thomas Moorman, Michelle L. Soupir, Mack C. Shelley II, Amy J. Morrow 2018 Iowa State University

Monitoring Tylosin And Sulfamethazine In A Tile-Drained Agricultural Watershed Using Polar Organic Chemical Integrative Sampler (Pocis), Maurice T. Washingtion, Thomas Moorman, Michelle L. Soupir, Mack C. Shelley Ii, Amy J. Morrow

Agricultural and Biosystems Engineering Publications

This study evaluated the influence of temporal variation on the occurrence, fate, and transport of tylosin (TYL) and sulfamethazine (SMZ); antibiotics commonly used in swine production. Atrazine (ATZ) was used as a reference analyte to indicate the agricultural origin of the antibiotics. We also assessed the impact of season and hydrology on antibiotic concentrations. A reconnaissance study of the South Fork watershed of the Iowa River (SFIR), was conducted from 2013 to 2015. Tile drain effluent and surface water were monitored using polar organic integrative sampler (POCIS) technology. Approximately 169 animal feeding operations (AFOs) exist in SFIR, with 153 of ...


A Cost-Effective Software Testing Strategy Employing Online Feedback Information, Zhiquan Zhou, Arnaldo Sinaga, Willy Susilo, Lei Zhao, Kai-Yuan Cai 2018 University of Wollongong

A Cost-Effective Software Testing Strategy Employing Online Feedback Information, Zhiquan Zhou, Arnaldo Sinaga, Willy Susilo, Lei Zhao, Kai-Yuan Cai

Faculty of Engineering and Information Sciences - Papers: Part B

An online partitioning strategy is presented, in which test cases are selected based on feedback information collected during the testing process. The strategy differs from con- ventional approaches because the partitioning is performed online rather than off-line and because the partitioning is not based on program code or specifications. It can, therefore, be implemented in the absence of the source code or specification of the program under test. The cost-effectiveness of the proposed strategy has been empirically investigated with a set of subject programs, namely, SPACE, SED, GREP, and the Siemens Suite of Programs. The results demonstrate that the proposed ...


Heat Transfer Vest, Nicholas Forsgaard 2018 Central Washington University

Heat Transfer Vest, Nicholas Forsgaard

All Undergraduate Projects

The purpose of this report is to document the progression of the authors senior project. . The of that project was the research of Liquid Cooled Garment (LCG) technology, the generation of a novel LCG prototype and the testing of that prototype relative to a commercial benchmark. As such, this report is a complete narrative of the of these tasks, their execution and the underlying assumptions and commentary. The motivation for this report is to satisfy the capstone requirements of the MET program at CWU by documenting the Senior Project and its subordinate tasks. First, the student designed a LCG system ...


User-Friendly Deniable Storage For Mobile Devices, Bing CHANG, Yao CHENG, Fengwei ZHANG, Wen-Tao ZHU, Yingjiu LI, Zhan WANG 2018 Singapore Management University

User-Friendly Deniable Storage For Mobile Devices, Bing Chang, Yao Cheng, Fengwei Zhang, Wen-Tao Zhu, Yingjiu Li, Zhan Wang

Research Collection School Of Information Systems

Mobile devices are prevalently used to process sensitive data, but traditional encryption may not work when an adversary is able to coerce the device owners to disclose the encryption keys. Plausibly Deniable Encryption (PDE) is thus designed to protect sensitive data against this powerful adversary. In this paper, we present MobiPluto, a user-friendly PDE scheme for denying the existence of sensitive data stored on mobile devices. A salient difference between MobiPluto and the existing PDE systems is that any block-based file systems can be deployed on top of it. To further improve usability and deniability of MobiPluto, we introduce a ...


Seasonal Variation Of Macrolide Resistance Gene Abundances In The South Fork Iowa River Watershed, Elizabeth Luby Rieki, Thomas B. Moorman, Elizabeth L. Douglass, Michelle L. Soupir 2018 Iowa State University

Seasonal Variation Of Macrolide Resistance Gene Abundances In The South Fork Iowa River Watershed, Elizabeth Luby Rieki, Thomas B. Moorman, Elizabeth L. Douglass, Michelle L. Soupir

Agricultural and Biosystems Engineering Publications

The Midwestern United States is dominated by agricultural production with high concentrations of swine, leading to application of swine manure onto lands with artificial subsurface drainage. Previous reports have indicated elevated levels of antibiotic resistance genes (ARGs) in surface water and groundwater around confined animal feeding operations which administer antimicrobials. While previous studies have examined the occurrence of ARGs around confined swine feeding operations, little information is known how their transport from tile-drained fields receiving swine manure application impacts downstream environments. To further our knowledge in this area, water samples were collected from five locations in the agriculturally dominated South ...


Integrating Photovoltaic Thermal Collectors And Thermal Energy Storage Systems Using Phase Change Materials With Rotary Desiccant Cooling Systems, Haoshan Ren, Zhenjun Ma, Wenye Lin, Wenke Fan, Weihua Li 2018 University of Wollongong

Integrating Photovoltaic Thermal Collectors And Thermal Energy Storage Systems Using Phase Change Materials With Rotary Desiccant Cooling Systems, Haoshan Ren, Zhenjun Ma, Wenye Lin, Wenke Fan, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part B

This paper presents a feasibility investigation of integrating a hybrid photovoltaic thermal collector-solar air heater (PVT-SAH) and an air-based thermal energy storage (TES) system using phase change materials (PCMs) with rotary desiccant cooling systems for residential applications. The PVT-SAH is used to generate both electricity and thermal energy, while the TES unit is used to solve the mismatch between energy demand for desiccant wheel regeneration and thermal energy generation from the PVT-SAH. A near-optimal design of the proposed system is first identified using the response surface method. The feasibility is then examined using three performance indicators, including Solar Thermal Contribution ...


Strong Stability Of A Class Of Difference Equations Of Continuous Time And Structured Singular Value Problem, Qian Ma, Keqin Gu, Narges Choubedar 2018 Nanjing University of Science and Technology

Strong Stability Of A Class Of Difference Equations Of Continuous Time And Structured Singular Value Problem, Qian Ma, Keqin Gu, Narges Choubedar

SIUE Faculty Research, Scholarship, and Creative Activity

This article studies the strong stability of scalar difference equations of continuous time in which the delays are sums of a number of independent parameters tau_i, i = 1, 2, . . . ,K. The characteristic quasipolynomial of such an equation is a multilinear function of exp(-tau_i s). It is known that the characteristic quasipolynomial of any difference equation set in the form of one-delayper- scalar-channel (ODPSC) model is also in such a multilinear form. However, it is shown in this article that some multilinear forms of quasipolynomials are not characteristic quasipolynomials of any ODPSC difference equation set. The equivalence between local strong ...


Legged Motion Planning In Complex Three-Dimensional Environments, Andrew Short, Tirthankar Bandyopadhyay 2018 University of Wollongong

Legged Motion Planning In Complex Three-Dimensional Environments, Andrew Short, Tirthankar Bandyopadhyay

Faculty of Engineering and Information Sciences - Papers: Part B

While legged robots are well suited to navigating complex three-dimensional (3-D) environments, their practical applicability is still hampered by the time taken to plan manoeuvres to traverse these challenging environments. We present contact dynamic roadmaps (CDRM), which extend dynamic roadmaps with contact information. The CDRM is precomputed offline to generate a discretized mapping from each leg's workspace to its configuration space, and then adapted online to the environment to rapidly identify collision-free foothold positions. The concept behind this is to perform the expensive foothold candidate generation and collision checking phases offline and store the data for use in the ...


Optimization Of Turbulent Prandtl Number In Turbulent, Wall Bounded Flows, Donald Edward Bernard 2018 University of Vermont

Optimization Of Turbulent Prandtl Number In Turbulent, Wall Bounded Flows, Donald Edward Bernard

Graduate College Dissertations and Theses

After nearly 50 years of development, Computational Fluid Dynamics (CFD) has become an indispensable component of research, forecasting, design, prototyping and testing for a very broad spectrum of fields including geophysics, and most engineering fields (mechanical, aerospace, biomedical, chemical and civil engineering). The fastest and most affordable CFD approach, called Reynolds-Average-Navier-Stokes (RANS) can predict the drag around a car in just a few minutes of simulation. This feat is possible thanks to simplifying assumptions, semi-empirical models and empirical models that render the flow governing equations solvable at low computational costs. The fidelity of RANS model is good to excellent for ...


Applied Strength Of Materials For Engineering Technology, Barry Dupen 2018 Indiana University - Purdue University Fort Wayne

Applied Strength Of Materials For Engineering Technology, Barry Dupen

Manufacturing and Construction Engineering Technology Faculty Publications

No abstract provided.


10.11648.J.Ijmsa.S.2018070101.12.Pdf, Chander Shekhar 2017 Selected Works

10.11648.J.Ijmsa.S.2018070101.12.Pdf, Chander Shekhar

James Yin

No abstract provided.


What Is Community Operational Research?, Gerald Midgley, Michael P. Johnson Jr., George Chichirau 2017 University of Hull

What Is Community Operational Research?, Gerald Midgley, Michael P. Johnson Jr., George Chichirau

Michael P. Johnson

Community Operational Research (Community OR) has been an explicit sub-domain of OR for more than 30 years. In this paper, we tackle the controversial issue of how it can be differentiated from other forms of OR. While it has been persuasively argued that Community OR cannot be defined by its clients, practitioners or methods, we argue that the common concern of all Community OR practice is the meaningful engagement of communities, whatever form that may take – and the legitimacy of different forms of engagement may be open to debate. We then move on to discuss four other controversies that have ...


Chapter Rare Earth Oxide Desulfurizers, James Yin 2017 Selected Works

Chapter Rare Earth Oxide Desulfurizers, James Yin

James Yin

No abstract provided.


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