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Performance Evaluation Of A Plug-In Refrigeration System Running Under The Simultaneous Control Of Compressor Speed And Expansion Valve Opening, Jackson Braz Marcinichen, Leonardo C. Schurt, Claudio Melo, Luis A. T. Vieira Jan 2008

Performance Evaluation Of A Plug-In Refrigeration System Running Under The Simultaneous Control Of Compressor Speed And Expansion Valve Opening, Jackson Braz Marcinichen, Leonardo C. Schurt, Claudio Melo, Luis A. T. Vieira

International Refrigeration and Air Conditioning Conference

No abstract provided.


Polymer-Tube-Bundle Heat Exchanger For Liquid-To-Gas Applications, Younggil Park, Anthony M. Jacobi Jan 2008

Polymer-Tube-Bundle Heat Exchanger For Liquid-To-Gas Applications, Younggil Park, Anthony M. Jacobi

International Refrigeration and Air Conditioning Conference

No abstract provided.


A Study Of Frost Nucleation On Flat Surfaces: Theoretical Model And Experimental Validation, Robson O. Piucco, Christian J. L. Hermes, Claudio Melo, Jader R. Barbosa Jan 2008

A Study Of Frost Nucleation On Flat Surfaces: Theoretical Model And Experimental Validation, Robson O. Piucco, Christian J. L. Hermes, Claudio Melo, Jader R. Barbosa

International Refrigeration and Air Conditioning Conference

No abstract provided.


Experimental Analysis Of Solar Refrigeration System, Sanjaykumar A. Borikar, Uday S. Wankhede Jan 2008

Experimental Analysis Of Solar Refrigeration System, Sanjaykumar A. Borikar, Uday S. Wankhede

International Refrigeration and Air Conditioning Conference

No abstract provided.


Study Of Effect Of Heat Transfer Through Fins In A Fin-And-Tube Carbon Dioxide Gas Cooler On Its Performance Through Numerical Modeling, Varun Singh, Vikrant Aute, Reinhard Radermacher Jan 2008

Study Of Effect Of Heat Transfer Through Fins In A Fin-And-Tube Carbon Dioxide Gas Cooler On Its Performance Through Numerical Modeling, Varun Singh, Vikrant Aute, Reinhard Radermacher

International Refrigeration and Air Conditioning Conference

No abstract provided.


Usefulness Of Entropy Generation Minimization Through A Heat Exchanger Modeling Tool, Varun Singh, Vikrant Aute, Reinhard Radermacher Jan 2008

Usefulness Of Entropy Generation Minimization Through A Heat Exchanger Modeling Tool, Varun Singh, Vikrant Aute, Reinhard Radermacher

International Refrigeration and Air Conditioning Conference

No abstract provided.


Application Of Air Curtains In Refrigerated Chambers, Julian Jaramillo, Assensi Oliva, Carlos D. Perez-Segarra, Carles Oliet Jan 2008

Application Of Air Curtains In Refrigerated Chambers, Julian Jaramillo, Assensi Oliva, Carlos D. Perez-Segarra, Carles Oliet

International Refrigeration and Air Conditioning Conference

No abstract provided.


Simulation Of The Effects Of A Non-Adiabatic Capillary Tube On Refrigeration Cycle, Sanggoon Park, Kidong Son, Jihwan Jeong, Lyunsu Kim Jan 2008

Simulation Of The Effects Of A Non-Adiabatic Capillary Tube On Refrigeration Cycle, Sanggoon Park, Kidong Son, Jihwan Jeong, Lyunsu Kim

International Refrigeration and Air Conditioning Conference

No abstract provided.


A-Type Heat Exchanger Simulation Using 2-D Cfd For Airside Heat Transfer And Pressure Drop, Omar Abdelaziz, Varun Singh, Vikrant Aute, Reinhard Radermacher Jan 2008

A-Type Heat Exchanger Simulation Using 2-D Cfd For Airside Heat Transfer And Pressure Drop, Omar Abdelaziz, Varun Singh, Vikrant Aute, Reinhard Radermacher

International Refrigeration and Air Conditioning Conference

No abstract provided.


Development And Performance Evaluation Of A Semi Indirect Evaporative Cooler, Maneesh Dubey, Sps Rajpat Jan 2008

Development And Performance Evaluation Of A Semi Indirect Evaporative Cooler, Maneesh Dubey, Sps Rajpat

International Refrigeration and Air Conditioning Conference

No abstract provided.


Analysis Of Laterally Loaded Piles In Multilayered Soil Deposits, Dipanjan Basu, Rodrigo Salgado, Monica Prezzi Jan 2008

Analysis Of Laterally Loaded Piles In Multilayered Soil Deposits, Dipanjan Basu, Rodrigo Salgado, Monica Prezzi

JTRP Technical Reports

This report focuses on the development of a new method of analysis of laterally loaded piles embedded in a multi-layered soil deposit treated as a three-dimensional continuum. Assuming that soil behaves as a linear elastic material, the governing differential equations for the deflection of laterally loaded piles were obtained using energy principles and calculus of variations. The differential equations were solved using both the method of initial parameters and numerical techniques. Soil resistance, pile deflection, slope of the deflected pile, bending moment and shear force can be easily obtained at any depth along the entire pile length. The results of …


Reputation-Based Resilient Data Aggregation In Sensor Network, Carlos R. Perez Dec 2007

Reputation-Based Resilient Data Aggregation In Sensor Network, Carlos R. Perez

Department of Electrical and Computer Engineering Masters Theses

Data aggregation, or the fusing of many sensor measurements into a single summary, has been proposed as an important primitive in wireless sensor networks. But data aggregation is vulnerable to security attacks and natural failures where a few nodes can drastically alter the result of the aggregation by reporting erroneous data. In this thesis we present RDAS, a robust data aggregation protocol that uses a reputation-based approach to identify and isolate malicious nodes in a sensor network. RDAS is based on a hierarchical clustering arrangement of nodes, where a cluster head analyzes data from the cluster nodes to determine the …


Volumetric Visualization Of Nexrad Level Ii Doppler Weather Data From Multiple Sites, Yi Ru Dec 2007

Volumetric Visualization Of Nexrad Level Ii Doppler Weather Data From Multiple Sites, Yi Ru

Purdue Polytechnic Masters Theses

Weather visualization is critical for operational forecasters and weather researchers to analyze, monitor, and predict severe weather events such as storms, tornadoes, and hurricanes. Usually measured weather datasets such as NEXRAD Level II radar data contain some errors and have temporal aliasing issues, so that the raw data cannot represent the true meteorological patterns. Existing weather visualization packages usually ignore these problems, thus they fail to unveil some detailed information and cannot meet the needs of professional meteorologists. Most displays generated by those packages are limited to 2D images, 3D point clouds, or iso-surfaces. Those displays are not able to …


Bridging Cultural Barriers In Bicultural Projects: More Than Translation And Interpretation Of Language, Taira Koybaeva Dec 2007

Bridging Cultural Barriers In Bicultural Projects: More Than Translation And Interpretation Of Language, Taira Koybaeva

Global Business Languages

No abstract provided.


A Cross-Cultural Comparison Of German And American Graduate Business Students, Stefanie Borst Dec 2007

A Cross-Cultural Comparison Of German And American Graduate Business Students, Stefanie Borst

Global Business Languages

This paper reports on results of a comparative assessment of MBA students at highly ranked business schools in Germany and the USA. The results from a demographic and attitude questionnaire, and the results from a reading and writing assessment are discussed, and areas of significant variation between the German and American students are highlighted. Striking differences were found in several areas, even though the German and American students were similar with respect to educational level and professional goals. Since international MBAs like these students will ultimately work with each other in the global business community, I propose that understanding these …


Creativity, Culture, Business German, And A Moo? Integrating On-Line Technology Into Foreign Language Instruction, Margaret Setje-Eilers Dec 2007

Creativity, Culture, Business German, And A Moo? Integrating On-Line Technology Into Foreign Language Instruction, Margaret Setje-Eilers

Global Business Languages

No abstract provided.


Library Marketplace -- Looking Forward-Looking Back, John D. Riley Dec 2007

Library Marketplace -- Looking Forward-Looking Back, John D. Riley

Against the Grain

No abstract provided.


Group Therapy -- Database Trials, Christine Fischer Dec 2007

Group Therapy -- Database Trials, Christine Fischer

Against the Grain

No abstract provided.


Matching And Fairness In Threat-Based Mobile Sensor Coverage, Chris Y. T. Ma, Jren-Chit Chin, David K.Y. Yau, Nageswara S. Rao, Mallikarjun Shankar Nov 2007

Matching And Fairness In Threat-Based Mobile Sensor Coverage, Chris Y. T. Ma, Jren-Chit Chin, David K.Y. Yau, Nageswara S. Rao, Mallikarjun Shankar

Department of Computer Science Technical Reports

No abstract provided.


Supporting Annotated Relations, M. Y. Eltabakh, M. Ouzzani, Walid G. Aref, Ahmed K. Elmagarmid, Y. Laura-Silva Nov 2007

Supporting Annotated Relations, M. Y. Eltabakh, M. Ouzzani, Walid G. Aref, Ahmed K. Elmagarmid, Y. Laura-Silva

Department of Computer Science Technical Reports

No abstract provided.


Supporting Views In Data Stream Management System, Thanaa M. Ghanem, Walid G. Aref, Ahmed K. Elmagarmid, Per-Ake Larson Nov 2007

Supporting Views In Data Stream Management System, Thanaa M. Ghanem, Walid G. Aref, Ahmed K. Elmagarmid, Per-Ake Larson

Department of Computer Science Technical Reports

No abstract provided.


Meeting The Challenge Of Moving Youth Into The Workforce: Reducing Dropouts And Increasing Educational Attainment, Center For Families Nov 2007

Meeting The Challenge Of Moving Youth Into The Workforce: Reducing Dropouts And Increasing Educational Attainment, Center For Families

Center for Families Publications

No abstract provided.


Full Page Ads, Editor Nov 2007

Full Page Ads, Editor

Against the Grain

No abstract provided.


Privacy-Preserving Updates To Confidential And Anonymous Databases, Alberto Trombetta, Wei Jiang, Elisa Bertino, Lorenzo Bossi Oct 2007

Privacy-Preserving Updates To Confidential And Anonymous Databases, Alberto Trombetta, Wei Jiang, Elisa Bertino, Lorenzo Bossi

Department of Computer Science Technical Reports

No abstract provided.


Compact Silicon Microring Resonators With Ultra-Low Propagation Loss In The C Band, Shijun Xiao, Maroof H. Khan, Hao Shen, Minghao Qi Oct 2007

Compact Silicon Microring Resonators With Ultra-Low Propagation Loss In The C Band, Shijun Xiao, Maroof H. Khan, Hao Shen, Minghao Qi

Birck and NCN Publications

The propagation loss in compact silicon microring resonators is optimized with varied ring widths as well as bending radii. At the telecom band of 1.53-1.57 mu m, we demonstrate as low as 3-4 dB/cm propagation losses in compact silicon microring resonators with a small bending radius of 5 mu m, corresponding to a high intrinsic quality factor of 200,000-300,000. The loss is reduced to 2-3 dB/cm for a larger bending radius of 10 mu m, and the intrinsic quality factor increases up to an ultrahigh value of 420,000. Slot-waveguide microring resonators with around 80% optical power confinement in the slot …


Electro-Thermal Transport In Nanotube Based Composites For Macroelectronic Applications, Satish Kumar Oct 2007

Electro-Thermal Transport In Nanotube Based Composites For Macroelectronic Applications, Satish Kumar

Department of Electrical and Computer Engineering Masters Theses

Dispersions of particles of different shapes and sizes in fluids or solids modify the transport properties of the underlying matrix. A remarkable enhancement in the electrical, thermal and other transport properties of the matrix due to the long aspect ratio dispersions like nanotube/nanowires has been observed my many research groups. This has motivated tremendous research to explore these composites for various macro-electronic and micro-electronic applications in the last decade. Carbon nanotubes (CNTs) network based thin-film transistors (TFTs) promise improved performance for flexible plastic electronics with potential applications in displays, e-paper, e-clothing, bio-chemical sensing, conformal radar, and others. A detailed theoretical …


Eigenvalue Solvers For Atomistic Simulations Of Electronic Structures With Nemo-3d, Maxim Naumov, Sunhee Lee, Ben Haley, Rajib Rahman, Hoo Ryu, Faisal Saied, Steve Clark, Gerhard Klimeck Oct 2007

Eigenvalue Solvers For Atomistic Simulations Of Electronic Structures With Nemo-3d, Maxim Naumov, Sunhee Lee, Ben Haley, Rajib Rahman, Hoo Ryu, Faisal Saied, Steve Clark, Gerhard Klimeck

Other Nanotechnology Publications

In the atomistic simulation of electronic structures (e.g. quantum dots, Fig. 1), it is imperative to take advantage of the most efficient parallel numerical algorithms. In order to determine the energy levels and corresponding wave functions of interest, we need to find few of the interior eigenvalues of a large sparse standard Hermitian eigenvalue problem. Several algorithms have been devised for such problems, including (P)ARPACK [1], (Block) Lanczos [2] and Tracemin [3]. In this paper, the tradeoffs of these algorithms for the solution of eigenvalue problems arising in Nanoelectronic Modeling tool NEMO-3D [4], [5] will be discussed. The effectiveness of …


Reliability Of Krylov Subspace Methods - A Practical Perspective Ii, M. Naumov, M. Manguoglu, C. C. Mikkelsen, Ahmed Sameh Oct 2007

Reliability Of Krylov Subspace Methods - A Practical Perspective Ii, M. Naumov, M. Manguoglu, C. C. Mikkelsen, Ahmed Sameh

Department of Computer Science Technical Reports

No abstract provided.


Analytical Formulas And Scaling Laws For Peak Interaction Forces In Dynamic Atomic Force Microscopy, Shuiqing Hu, Arvind Raman Sep 2007

Analytical Formulas And Scaling Laws For Peak Interaction Forces In Dynamic Atomic Force Microscopy, Shuiqing Hu, Arvind Raman

Birck and NCN Publications

Determining the peak interaction force between an oscillating nanoscale tip and a sample surface has been a fundamental yet elusive goal in amplitude-modulated atomic force microscopy. Closed form analytical expressions are derived using nonlinear asymptotic theory for the peak attractive and repulsive forces that approximate with a high degree of accuracy the numerically simulated peak forces under ambient or vacuum conditions. Scaling laws involving van der Waals, chemical forces, nanoscale elasticity, and oscillator parameters are identified to demonstrate approximate similitude for the peak interaction forces under practical operating conditions.


Nonmagnetic Cloak With Minimized Scattering, Wenshan Cai, Uday K. Chettiar, Alexander V. Kildishev, V. M. Shalaev, Graeme W. Milton Sep 2007

Nonmagnetic Cloak With Minimized Scattering, Wenshan Cai, Uday K. Chettiar, Alexander V. Kildishev, V. M. Shalaev, Graeme W. Milton

Birck and NCN Publications

In an electromagnetic cloak based on a transformation approach, reduced sets of material properties are generally favored due to their easier implementation in reality, although a seemingly inevitable drawback of undesired scattering exists in such cloaks. Here, the authors suggest the use of high-order transformations to create smooth moduli at the outer boundary of the cloak, therefore completely eliminating the detrimental scattering within the limit of geometric optics. The authors apply this scheme to a nonmagnetic cylindrical cloak and demonstrate that the scattered field is reduced substantially in a cloak with optimal quadratic transformation as compared to its linear counterpart.