Digital Commons Network^™

Low-Cost Wavelength Measurement Based On A Macrobending Single-Mode Fiber, Qian Wang, Gerald Farrell, Thomas Freir, Ginu Rajan, Pengfei Wang

Articles

A low-cost all-fiber wavelength measurement technique is proposed and demonstrated. A macrobending standard single-mode fiber is developed as an edge filter with an optimal design and simple surface processing. A ratiometric wavelength measurement system employing the developed macrobending fiber filter demonstrates a resolution of ∼10 pm in a wavelength range from 1500 to 1560 nm with ease of assembly and calibration.

Preliminary Results For A Monocular Marker-Free Gait Measurement System, Jane Courtney, Annraoi Depaor

Articles

This paper presents results from a novel monocular marker-free gait measurement system. The system was designed for physical and occupational therapists to monitor the progress of patients through therapy. It is based on a novel human motion capture method derived from model-based tracking. Testing is performed on two monocular, sagittal-view, sample gait videos – one with both the environment and the subject’s appearance and movement restricted and one in a natural environment with unrestricted clothing and motion. Results of the modelling, tracking and analysis stages are presented along with standard gait graphs and parameters.

A New Eccentric Geomagnetic Dipole To Give The Correct Dip Pole Locations, Annraoi De Paor, Ted Burke

Articles

In this paper, we describe a new eccentric dipole model of the Earth’s magnetic field. The constraints under which the conventional eccentric dipole model is defined result in predicted dip pole locations that differ significantly from the measured locations. Here, we give a preliminary exposition of a new dipole model which, because it is constrained by the observed dip pole locations, overcomes this problem.

Don't Go There: When To Abandon Lesson Plans And Venture, Humbly, Into Ground Zero, Sue Norton

Articles

This paper discusses pedagogical styles that are appropriate in the classroom.

Basics Of Strip Photography, Andrew Davidhazy

Articles

An introduction to strip or scanning photography and how to adapt regular 35mm cameras for this purpose and apply them to photofinish and peripheral photography.

Principles Of Technical Photography And Photoinstrumentation, Andrew Davidhazy

Articles

A brief review of fundamental image formation principles, camera systems, and special cameras and imaging techniques used in scientific, technical and instrumentation photography for the purpose of visualizing otherwise invisible events or to make measurements of such events. The article describes in brief how the various systems work and the technology that makes their operation possible.

Preparation Of Technical Reports, Ronald Francis

Articles

This is a brief article that was prepared and distributed to his students by the late Dr. Ronald Francis, of the Photographic Science department in the School of Photographic Arts and Sciences at RIT. It is included here in his memory and to continue to serve students of photographic sciences into the future.

Bracket For Strip Photography, Andrew Davidhazy

Articles

How to make an improvised film rewinding unit useful for experimenting with panoramic and photofinish type photography. Construction details, application suggestions and instructions on set-up and use are included

Demonstration Quality Scanning Digital Camera, Andrew Davidhazy

Articles

Another offshoot of the article below [article is located at: https://ritdml.rit.edu/dspace/handle/1850/1557 ].Work is based on the use of a linear CCD array removed from a cheap hand scanner and installed in a 35mm camera body for doing peripheral, panoramic and image plane scanning.

Instruction Via Chat: Does Co-Browse Help?, Stephanie J. Graves, Christina M. Desai

Articles

Purpose – The purpose of this research is to determine whether instruction would be welcomed by instant messaging (IM)/chat users, whether instruction is possible in this medium, whether it can be effectively provided, and if the use of co-browsing enhances learning.

Design/methodology/approach – Two studies were conducted in which IM/chat reference transcripts were analyzed and patron surveys collected. This research paper compares results from these studies, the first based on use of text-only IM software, the second using commercial chat software with a co-browse feature.

Findings – Findings indicate that patrons welcome instruction, whether they ask for it or not, …

Prevalence Of Substantive Consolidation In Large Bankruptcies From 2000 To 2004: Preliminary Results, William H. Widen

Articles

No abstract provided.

Lossless Compression Of Color Palette Images With One-Dimensional Techniques, Ziya Arnavut, Ferat Sahin

Articles

Palette images are widely used on the World Wide Web (WWW) and in game-cartridge applications. Many images used on the WWW are stored and transmitted after they are compressed losslessly with the standard graphics interchange format (GIF), or portable network graphics (PNG). Well-known 2-D compression schemes, such as JPEG-LS and JPEG-2000, fail to yield better compression than GIF or PNG due to the fact that the pixel values represent indices that point to color values in a look-up table. To improve the compression performance of JPEG-LS and JPEG-2000 techniques, several researchers have proposed various reindexing algorithms. We investigate various compression …

An Overview Of High Speed Photographic Imaging, Andrew Davidhazy

Articles

This is an introduction to several topics related to high speed photography from electronic flash to rotating prism and rotating mirror cameras to streak and synchroballistic applications of various high speed maging systems.

Legal Reason: The Use Of Analogy In Legal Argument, Richard A. Posner

Articles

No abstract provided.

Reasoning By Analogy (Reviewing Lloyd L. Weinreb, Legal Reason: The Use Of Analogy In Legal Argument (2005)), Richard A. Posner

Articles

No abstract provided.

Integrated Antenna For Multiband Multi-National Wireless Combined With Gsm1800/Pcs1900/Imt2000 + Extension, Matthias John, Max Ammann

Articles

A printed triple-band monopole antenna appropriate for use as a terminal antenna in modern wireless multiband systems is proposed. The impedance bandwidth of each band has been optimised using a quasi-Newton technique and the bandwidth includes virtually all wireless bands. Various parameter sweeps are presented which improve our understanding of the antenna, in particular, the effect of groundplane-size and branch-off point on impedance bandwidth and radiation pattern.

Distributed Approaches For Exploiting Multiuser Diversity In Wireless Networks, Xiangping Qin, Randall A. Berry

Articles

In wireless fading channels, multiuser diversity can be exploited by scheduling users to transmit when their channel conditions are favorable. This leads to a sum throughput that increases with the number of users and, in certain cases, achieves capacity. However, such scheduling requires global knowledge of every user’s channel gain, which may be difficult to obtain in some situations. This paper addresses contention-based protocols for exploiting multiuser diversity with only local channel knowledge. A variation of the ALOHA protocol is given in which users attempt to exploit multiuser diversity gains, but suffer contention losses due to the distributed channel knowledge. …

Rytsi: The Rochester Institute Of Technology-Yale Tip-Tilt Speckle Imager, Reed Meyer, Elliott Horch, Zoran Ninkov

Articles

We have constructed a new speckle imaging system that collects a large number of speckle patterns on the detector area of a large-format CCD. The system is called the RIT-Yale Tip-tilt Speckle Imager (RYTSI) because it uses two galvanometric scanning mirrors to tip and tilt each speckle pattern to a different location on the CCD chip. It therefore solves the bandwidth problem of using CCDs in speckle imaging in a unique way: the mirrors direct speckle patterns across the chip with millisecond accuracy, and the CCD is read out only when the chip is filled with patterns. The instrument was …

25 Years Of Microelectronic Engineering Education, Santosh Kurinec, Lynn Fuller, Bruce Smith

Articles

Rochester Institute of Technology started the nation's first Bachelor of Science program in Microelectronic Engineering in 1982. The program has kept pace with the rapid advancements in semiconductor technology, sharing 25 of the 40 years characterized by Moore's Law. The program has constantly advanced its integrated circuit fabrication laboratory in order to graduate students with state-of-the-art knowledge, who become immediate and efficient contributors to their company or graduate program. Today, this facility serves as a key resource for research in semiconductor devices, processes, MEMS, nanotechnology, and microsystems. This has led to the creation of the first PhD program in engineering …

An Integer Programming Approach To The Construction Of Trend-Free Experimental Plans On Split-Plot Designs, Andres Carrano, Brian Thorn, Guillermo Lopez

Articles

In many experimental designs, the standard procedure involves randomization of the factor-level combination run order. There are cases, however, where it Is known that a time or position trend that can seriously compromise the results of the experiment may be present. These trends Include wear of tooling and equipment, leaming curves, change In temperatures, and so on, and the trends may show up as linear, quadratic, or even higher order trends. All previously published work has dealt with various methods of constructing trend-resistant run order plans on full and fractional factorial designs. These previous efforts have not addressed any additional …

Priority-Determined Multiclass Handoff Scheme With Guaranteed Mobile Qos In Wireless Multimedia Networks, Fei Hu, Neeraj Sharma

Articles

The provision of multiclass services is gaining wide acceptance and will be more ubiquitous in future wireless and mobile systems. The crucial issue is to provide the guaranteed mobile quality of service (QoS) for arriving multiclass calls. In multimedia cellular networks, we should not only minimize the dropping rate of handoff calls, but also control the blocking rate of new calls at an acceptable level. This paper proposes a novel multiclass call-admission- control mechanism that is based on a dynamic reservation pool for handoff requests. In this paper, we propose the concept of servicing multiclass connections based on priority determination …

The Integration Of Ad Hoc Sensor And Cellular Networks For Multi-Class Data Transmission, Fei Hu, Sunil Kumar

Articles

This paper targets mobile telemedicine applications that can be supported using third generation (3G) cellular networks, to provide highly flexible medical services. On the other hand, large-scale Ad hoc Sensor Networks (ASN), when deployed among mobile patients who may carry different kinds of micro-sensors to measure ECG, blood pressure, basal temperature or other physiological data, can provide a dynamic data query architecture to allow the medical specialists to monitor patients at any place. So far very little research has been conducted to explore the possibility of integrating ASN with mobile telemedicine. In this paper: 1. we suggest an integrated architecture …

Sensitivity Of Contact Electronic Throttle Control Sensor To Control System Variation, Robert Garrick

Articles

"The following papers are published on this website with permission from SAE International. As a user of this website, you are permitted to view these papers on-line, download these .pdf files and print one copy of these papers at no cost for your use only. The downloaded .pdf files and printout of these SAE papers may not be copied, distributed or forwarded to others or for the use of others. SAE Paper # 2006-01-0763 © **2006 SAE International The purpose of this paper is to improve the understanding of the advantages of a non-contact electronic throttle control (ETC) air control …

Low-Cost Wavelength Measurement Based On A Macrobending Single-Mode Fiber, Qian Wang, Gerald Farrell, Thomas Freir, Ginu Rajan, Pengfei Wang

Articles

A low-cost all-fiber wavelength measurement technique is proposed and demonstrated. A macrobending standard single-mode fiber is developed as an edge filter with an optimal design and simple surface processing. A ratiometric wavelength measurement system employing the developed macrobending fiber filter demonstrates a resolution of∼10 pmin a wavelength range from1500to1560 nmwith ease of assembly and calibration.

Design Of Integrated Polarization Beam Splitter With Liquid Crystal, Qian Wang, Gerald Farrell, Yuliya Semenova

Articles

An integrated polarization beam splitter based on a directional coupler (DC) with an etched slot and filled-in liquid crystal covering layer, which utilizes the birefringence of liquid crystal materials, is proposed. A supermode solution for the DC involving birefringence materials and the corresponding full-vector anisotropic beam propagation method are employed as modeling tools. A numerical design of the proposed structure is presented. Beam propagation behavior along the whole structure involving curved input and output regions and central coupling region is simulated. Simulation result shows an extinction ratio of 25.3 and 41.9 dB for the TE and TM mode, respectively.

A Novel Gps Patch Antenna On A Fractal Hi-Impedance Surface Substrate, Xiulong Bao, Giuseppe Ruvio, Max Ammann, Matthias John

Articles

A compact high-performance circularly-polarized microstrip antenna for the global positioning system application is proposed. It comprises a fractal hi-impedance surface electromagnetic bandgap (EBG) structure printed on a high permittivity substrate. Measurements and simulation of return loss and axial ratio are in good agreement. It is shown that the proposed Global Positioning System antenna has good axial ratio performance in the upper half-plane, an improvement in gain and a significantly wider axial ratio bandwidth when compared to the same antenna without EBG

Process Modeling For Simulation, John Ryan, Cathal Heavey

Articles

This paper discusses shortfalls in relation to the requirements gathering phases of simulation. While many developments have taken place around supporting the model coding task of simulation, there are few tools available to assist in the requirements gathering phase. This is surprising as it has been reported by several researchers that the requirements phase can absorb twice as much resources as the coding phase. There are numerous process modeling tools available (over 100) that can and have been used to support the requirements phase of simulation. This paper provides a selective review of some of the most important in relation …

Geographic Variation Of Solar Water Heater Performance In Europe, Y. Yohanis, O. Popel, S. Frid, Brian Norton

Articles

Solar water heater (SWH) performance has been analysed using the ‘number of days’ method for 147 different sites in all European countries. The total number of days that the temperature of delivered solar heated water reaches or exceeds specified demand temperatures is correlated with solar radiation on a horizontal surface for summer, warm half-year, and whole year periods. Maps are presented and discussed showing the contours for the number of days that an illustrative SWH met different hot water demand temperatures. Correlations between number of days water is provided at a specified temperature and solar fractions for the same periods …

Voice Activated Command And Control With Speech Recognition Over Wifi, Brian Nolan, Tony Ayres

Articles

This paper presents work conducted to date on the development of a voice activated command and control framework specifically for the control of remote devices in a ubiquitous computing environment. The prototype device is a Java controlled Lego Mindstorm robot. The research considers three different scenario configurations. A recognition grammar for command and control of the robot has been created and implemented in Java, in part in the recognition engine and in part on the robot. The physical topology involves Java at each node endpoint, that is, at the handheld PC (iPaq), the PC workstation, the Linux server and onboard …

Techonology Usage In The Supply Chain: The Case Of Small 3pls, Pietro Evangelista, Edward Sweeney

Articles

Purpose - In today’s supply chain management (SCM) practices, a successful strategy depends
increasingly on the performance of Third Party Logistics (3PL) providers as they play a key
integrative role linking the different supply chain elements more effectively. Information and
Communications Technology (ICT) has become an important element of 3PL competitive
capability as it enables higher levels of supply chain integration. Recent industry developments
have widened the technological gap between large and small 3PLs. This is critical particularly for
those markets populated by a large number of small 3PLs such as the Italian logistics industry. The
purpose of this paper …