In this study, we discuss our efforts in developing porous silicon based devices for terahertz signal processing. In the first stage of our research, we demonstrate that porous silicon samples fabricated from highly doped p-type silicon can have adjustable refractive indices ranging from 1.5-2.1 and can exhibit a resistivity that is four orders of magnitude higher than that of the silicon wafer from which they were made.
(Computer Project)Zoomable User Interfaces for the Authoring and Delivery of Slide Presentations
Millions of slide presentations are being authored and delivered with computer software every day. Yet much of the computer’s power for these tasks remains untapped. Existing interaction techniques leave presenters wrestling with limited size computer displays to get meaningful overviews of their work.
(Mechanical Project) Swarm Intelligence and Stigmergy: Robotic Implementation of Foraging Behavior
Swarm intelligence in multi-robot systems has become an important area of research within collective robotics. Researchers have gained inspiration from biological systems and proposed a variety of industrial, commercial, and military robotics applications.
(Management Project) Decision Making under Uncertainty and Bounded Rationality
In an attempt to capture the complexity of the economic system many economists were led to the formulation of complex nonlinear rational expectations models that in many cases can not be solved analytically. In such cases, numerical methods need to be employed.
(Civil Project)Integrated Analysis of Vertical Alignments and Speed Profiles for Rail Transit Routes
Frequent accelerations and decelerations for rail transit trains adversely affect in the major performance measures of travel time, tractive energy consumption and braking wear between stations. A dipped vertical alignment between rail transit stations provides trains some added advantages from gravity in accelerating as well as in decelerating.
(Civil Project) Behavioral Study of Ultra High Performance Concrete Girders
Ultra High Performance Concrete (UHPC) is one of the newer and superior classes of concrete that can be used to develop improved bridges capable of meeting the present and future traffic, environmental, maintenance and economical requirements. Developing on the superior material properties of UHPC, the research discussed herein studies the behavior of UHPC when used as a bridge girder material.
Four optimized girders have been cast and studied for various early age as well as long term properties such as early age shrinkage, transfer length, creep behavior and shrinkage under steam treatment. Data has been recorded through vibrating wire gages installed at strategic locations within each girder before they are cast.
(Mechanical Project) Symbol-Based Control of a Ball-on-Plate Mechanical System
Modern control systems often consist of networks of components that must share a common communication channel. Not all components of the networked control system can communicate with one another simultaneously at any given time. The “attention” that each component receives is an important factor that affects the system’s overall performance.
An effective controller should ensure that sensors and actuators receive sufficient attention. This project describes a “ball-on-plate” dynamical system that includes a digital controller, which communicates with a pair of language-driven actuators, and an overhead camera.
(Management Project) Do Cultures Really Matter?: A Case Study of Human Resource Management Strategies
The purpose of this research study is to explore the relationship between cultures and Human Resource Management Strategies in Swedish Multinational Corporations. In order to achieve this purpose, a multiple-methods research design is adopted.
(Computer Project)Streaming Explanograms: Networking for Real-Time Wireless Collaboration
The project goal is to implement a client program and test server to support streaming collaborative interaction using state of the art PDA and Bluetooth pen technologies. The project builds on an existing prototype solution, porting it to work on the Nokia 770, extending the functionality and conducting field tests.
(Electronics Project) Experimental Study of Cu2ZnSnS4 thin films for Solar Cells
Cu2ZnSnS4 (CZTS) is a semiconductor with a direct band gap of about 1,5 eV and anabsorption coefficient of 10^4 cm^-1, and is for this reason a potential thin film solarcell material. Demonstrated efficiencies of up to6,8% as well as use of cheap andabundant elements make CZTS a promising alternative to current solar cells.
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