Digital Commons Network^™

Existing And Potential In-Flight Entertainment Transmission Systems - Strengths And Weaknesses, Keith Mew

Journal of Aviation/Aerospace Education & Research

In-flight entertainment is likely to greatly expand its content over the next few years, mirroring changes that are occurring in terrestrial digital entertainment and communication systems. Most in-flight entertainment systems have been based on either in-plane, aircraft-to-ground, or aircraft-to-satellite technologies. The expansion of content expected in the near future will require advanced transmission systems that will be both technically and commercially able to deliver broadband services. This paper explores the strengths and weaknesses of existing transmissions technologies and suggests aircraft-to-aircraft transmission technology may offer advantages that other systems do not.

Quality In Airline Safety: Quality Methods And Tools Are Needed To Manage New Directions, Alan Stolzer, Carl Halford

Journal of Aviation/Aerospace Education & Research

Approximately 650 million people fly on U.S. certificated air carriers annually (Department of Transportation: Federal Aviation Administration, 2003). Although statistically air transportation is one of the safest modes of travel, the few airline accidents that occur never fail to garner substantial media attention and concern of the public. The responsibility to seek ways to improve air transportation safety falls on all involved in aviation - practitioners and educators alike. The purpose of this article is to provide, through a review of literature, a brief examination of the past, present, and future state of efforts to address airline safety, and to …

Publishing Aviation Research: A Literature Review Of Scholarly Journals, Robert W. Kaps, Ed Phillips

Journal of Aviation/Aerospace Education & Research

The importance of the aviation industry's socio-economic impact, domestically and globally, cannot be denied. In light of this and, as aviation continues to evolve as an academic field of study, post-secondary institutions with aviation specific curriculum have grown,in number and prominence. As a direct consequence of academic growth, the necessity to publish follows as a concomitant requirement. Through the diligence of those researchers actively conducting aviation related research a common theoretical and conceptual base for aviation specific research has been established. The void that once existed for aviation research has been filled, predominantly by three aviation specific journals and a …

Synthesis And Antimicrobial Activity Of Some Pyridyl And Naphthyl Substituted 1,2,4-Triazole And 1,3,4-Thiadiazole Derivatives, Khosrow Zamani, Khalil Faghihi, Taraneh Tofighi, Mohammad Reza Shariatzadeh

Turkish Journal of Chemistry

Synthesis of new 1,2,4-tri and 1,3,4-thiadiazoles, bearing isomeric pyridyl and 1-naphthyl is reported using 1,4-disubstituted thiosemicarbazides in alkaline and acidic media, respectively. The methylthio and benzylthio derivatives of the synthesized triazoles are also reported. All of the synthesized compounds were characterized by their FT-IR, ^{1}H-NMR and mass spectral data. The antibacterial studies of some of the synthesized compounds against S. aureus} and E. coli} as MIC values are reported. None of them have important antibacterial activities.

The Effect Of Cultural Conditions On The Variations Of Sod, Cat And Gsh-Px Activities And Lpo Levels In The Filamentous Fungus Fusarium Equiseti, Hülya Ayar Kayali, Leman Tarhan

Turkish Journal of Chemistry

The changes in the activity of cellular detoxifying defence enzymes such as SOD, CAT and GSH-Px against superoxide anion radical and hydrogen peroxide, and in LPO levels in the filamentous fungus, Fusarium equiseti were measured under growth condition. Experiments were performed comparing changes in glycerol and saccharose (5-25 g/L) as carbon sources, and in glycine, peptone (5-35 g/L) as nitrogen sources in an AFM medium. While SOD activities correlate well with respect to the increase in the glycerol concentration (r = 0.437, p < 0.001), CAT activities showed negative correlation (r = -0.663, p < 0.001). The increase in SOD and CAT activities of F. equiseti correlated with increases in saccharose concentration. When glycerol and saccharose were used as carbon sources, the maximum SOD, CAT and GSH-Px enzymes activities and the minimum LPO level were determined in the medium containing 15 g/L of saccharose on the 12^{th} day at 66.61, 182.79, 1.045 IU/mg and 1.41 nmol MDA/ gr wet weight, respectively. The effects of peptone and glycine as nitrogen sources were also investigated: 53.4% and 48.03% decreases were observed in the SOD and CAT activities of F. equiseti in the presence of 10 g/L of peptone in the culture medium. The presence of 15 g/L of glycine caused 5.30% and 69.90% decreases in the SOD and CAT activities in comparison to the presence of 15 g/L of saccharose, respectively. On the other hand, LPO levels increased in proportion to the decrease in antioxidant enzyme activities in glycine and peptone supplemented media.

An Efficient Synthesis Of Substituted 4-Aryl-3-Cyano-2-Amino Thiophenes By A Stepwise Gewald Reaction, Ferhan Tümer, Duygu Eki̇nci̇, Kani̇ Zi̇lbeyaz, Ümi̇t Demi̇r

Turkish Journal of Chemistry

The title compounds were efficiently synthesised starting from aryl methyl ketones in 3 steps. Knoevenagel condensation of aryl methyl ketones with malononitrile gave the corresponding crotonitriles (5a-f). Methyl groups of the crotonitriles (5a-f) were then efficiently brominated by refluxing and lightening the reaction media to give bromocrotonitriles (6a-f). The bromocrotonitriles (6a-f) were finally cyclised by treatment with NaSH to give the title compounds.

Virtual Personal Assistants In A Pervasive Computing World, John F. Bradley, Brian R. Duffy, Gregory O'Hare, Alan Martin, Bianca Schoen-Phelan

Conference papers

Computing paradigms are constantly evolving-from mainframe to desktop, and on to ubiquitous computing. With a wide variety of devices, each with varying constraints, it would be quite difficult to develop services that would operate in a uniform manner across all platforms. With this in mind we offer an agent based solution. Agent attributes of autonomy, adaptability and mobility make them highly suitable for use in pervasive computing environments. Agent Chameleons illustrates a framework for Virtual Personal Assistants (VPA) for the information age. This paper briefly outlines some of the technologies and concepts that underpin the functionality of a VPA.

Cyber Addiction, Heebok Park

Theses

Not Included

Extraction Of Frequency-Dependent Electrical Characteristics Of Biological Tissues Using Ultra-Wideband Electromagnetic Pulse, Michael D. Seymour

Theses

There have been many important contributions to imaging for biomedical applications. The most popular methods include X-ray mammography, magnetic resonance imaging (MRI), ultrasound, and most recently, microwave imaging. While the first three of these have been used for biomedical applications for over three decades, microwave imaging has seen many developments over the last few years. This is primarily due to the large contrast in electrical parameters between different body tissues (including differences between healthy and diseased tissues) at microwave frequencies. There are also vast improvements possible for the comfort of the patient undergoing such imaging as compared to mammography. However, …

An Analysis Of The Consistency Of Brand Color Reproduction In Print Packaging And Magazine Advertising, Seunga Kang Ha

Theses

Brand color is one way to represent the identity of the corporation and for the company to advertise itself. The purpose of brand color is to make customers perceive the color, recognize the brand, and ultimately buy products manufactured by the corporation. However, it is not easy to produce the same color through different print media applications because of different processes of color reproduction technology. In the print industry, corporations have controlled brand color tolerance to insure its consistency. However, there is some question as to how the print industry actually performs in maintaining this tolerance through reproduction. The goal …

A Physics-Based Model Of Sic-Based Mesfets, Sankha Mukherjee

Theses

Silicon Carbide (SiC) has been investigated as an alternative material to Silicon (Si) for enhancing the power-handling capability of semiconductor devices for simultaneous high-temperature and high frequency applications. Its high thermal conductivity, high bandgap, low permittivity, high saturation velocity, moderate mobility, material hardness and chemical inertness make it a prime candidate for power electronics, heat and light sensors, and MEMS applications. The MESFET is the most viable power transistor based on SiC. The performance of SiC MESFETs is limited by trapping and thermal effects. A physics-based analytical model of the SiC MESFET incorporating trapping and thermal effects is reported. The …

Embedded Charge For Microswitch Applications, Joanna Kiljan

Theses

In this work a micro-electro-mechanical system (MEMS) is proposed for radio frequency (RF) switching applications. MEMS devices outperform the traditionally used solid-state devices in areas such as isolation, insertion loss, and linearity. However, micro switches suffer from high actuation voltage, lifetime limitations, and high packaging cost. A novel micro switch design that incorporates embedded charge in a cantilever structure can, in principle, enable low-voltage operation. This was the primary motivation for this study

Into The Park, Joel Lederer

Theses

Not Included

Ancient Promises, Mohamad Rozi Mohd Nor

Theses

The story is about a girl who achieves her mythological destiny through her metamorphosis from a human form to that of a sea turtle which symbolizes universal love, fertility and desire. During preproduction the original concept (see Thesis Proposal in Appendix A) took a dramatic shift, becoming less of a traditional narrative work and evolving more into a visual lyrical form. Ancient Promises begins with the female lead character appearing restless during her strangely frantic investigations on a beach. She hears voices which surprise and intrigue her. Her discovery of a turtle and the loss of her ring increases the …

Remnants, Tom Morin

Theses

The primary goal of my thesis project entitled Remnants is transcendence that can lead a viewer or an audience to a new discovery within the Self. I am aware that each individual will experience transcendence in art differently. My intent is for my photography to be the conduit of transcendence, enabling the audience to take part in a discovery of the spiritual and the extraordinary. My thesis subject is erased chalkboards of varying sizes and gestures. In this series, individuals such as teachers and students are shaping the chalkboards' appearance through erasure and are unknowingly creating information and communication for …

Art Tales: Art As A Communicator Of New York State Folklore, Erin Claire Tobin

Theses

This thesis project focuses on the use of folktales as a starting point to explore texture and pattern. The artist was striving to create a visual communication of folktales. Using physical layers in the paintings to create spatial depth as well as to express the idea of the building of layers as a metaphor for the story of life, the artist engages the viewer to relate this to the idea that culture is built from many different layers of stories over time.

Detailed Modeling Of Mufflers With Perforated Tubes Using Substructure Boundary Element Method, Balasubramanian Datchanamourty

University of Kentucky Master's Theses

Perforated tubes in mufflers are generally modeled by the transfer impedance approach since modeling the actual geometry of the perforated tubes with holes is very expensive due to the enormity of the boundary elements required. With the development of the substructuring technique which greatly reduces the number of elements required detailed modeling of the perforated tubes has become possible. In this thesis mufflers with perforated tubes are analyzed by modeling the actual geometry and locations of holes on the perforated tubes. The Direct-mixed-body boundary element method with substructuring is used to model the mufflers. Mufflers of various geometry containing perforated …

Global Change, Domestic Policy, And Life Course Influences On Perceptions Of Health Equity Among Older Cubans, James Lester Schwar

University of Kentucky Doctoral Dissertations

Cubas provision of free health services to the entire population via neighborhood-based family doctors produced dramatic health gains and achieved a relative state of health equality. Since 1989, however, the termination of Soviet trade, a grave economic crisis, intensification of the US embargo, welfare reductions, and population aging have placed Cubas health successes and elder care services in jeopardy. Little independent research, though, has focused on the influence of post-Cold War circumstances on citizen attitudes about health programs and resources targeting Cubas older population. This research examined global and domestic factors since 1989 that have most influenced perceptions of the …

Dinitrogen Fixation And Release Of Ammonium And Dissolved Organic Nitrogen By Trichodesmium Ims101, Margaret R. Mulholland, Deborah A. Bronk, Douglas G. Capone

OES Faculty Publications

Two methods used to measure dinitrogen (N₂) fixation (acetylene reduction and ¹⁵N₂ uptake) often result in different N₂ fixation rates. Part of the discrepancy may arise from the observation that Trichodesmium can release a fraction of their recently fixed N₂ as dissolved organic nitrogen (DON) and/or ammonium (NH4 ⁺). To resolve outstanding issues regarding N₂ fixation and the production of dissolved combined nitrogen (N) by Trichodesmium, we conducted a comprehensive analysis of N₂ fixation and the production of DON and NH₄⁺ in cultures of Trichodesmium IMS101. We performed …

Film Vs. Digital - A Simulation Of Diagnostic Imaging Systems In Healthcare, Tamar S. Sinclair

Theses

Today, healthcare providers are faced with the decision of how to perform diagnostic imaging services with respect to continuing with traditional film-based imaging techniques or converting to digital imaging technology. This research focuses on the multifactor operational aspects of the diagnostic imaging system, and evaluates the effect that film or digital based imaging have on operational performance, productivity, and quality of patient care. That is, the time the patient spends in the system, the number of diagnostic imaging procedures performed per week and machine utilization. The goal of this research is to provide a quantitative analysis of film-based versus digital …

Tangerine Sours, Gisèle N. Couturier

Theses

My thesis work will explore the use of the ceramic object as metaphor for the self. Due to my strong background and interest in science and mathematics, I have a tendency to process my surroundings through logical order and pattern. I am continuously searching for this order and trying to classify and organize data so that it makes sense to me. Finding this order within chaos, particularly in the natural world, is fascinating. My intention is to reference these biological elements in a form that has a clear delineation between interior and exterior. The dialogue between the two is where …

Up, Suruchi Pahwa

Theses

Not Included

Swimming With The Fishes: Fish As A Transformational Symbol, Deale A. Hutton

Theses

Not Included

Automatic Error Recovery Using P3 Response Verification For A Brain-Computer Interface, Samuel A. Inverso

Theses

A brain-computer interface (BCI) is an augmentative communication mechanism that does not rely on peripheral nerves or muscles. Current BCIs are error prone and slow with error rates of 10 to 30% and transmission rates of 10-25 bits/min, however, error recovery and correction in BCI has largely been neglected. The focus of this thesis is the development of a method to automatically recover errors in BCI using the P3 brain signal for response verification. The existence of the P3 signal in responses to controlled goal items is shown in an evoked potential BCI used to control items in a virtual …

International Students' Travel Decision Making Process, Tung-Wei Lee

Theses

Not Included

P-Hip: A Multiresolution Halftoning Algorithm For Progressive Display, Mithun Mukherjee

Theses

This thesis describes and implements an algorithmic framework for memory efficient, 'on-the-fly' halftoning in a progressive transmission environment. Instead of a conventional approach which repeatedly reconstructs the continuous tone image from memory and subsequently halftones it for display, the proposed method achieves significant memory efficiency by storing only the halftoned image and updating it in response to additional information received through progressive transmission. Thus the method requires only a single frame-buffer of bits for storage of the displayed binary image and no additional storage is required for the contone data. The additional image data received through progressive transmission is accommodated …

Service Beyond The Campus: An Evaluation Of The Customer Service Of Unibe Alumni Office, Rochelli Subero

Theses

The Universidad Iberoamericana - UNIBE- has been using strategies to attract and maintain graduates' involvement within the university. Furthermore, UNIBE has invested financial and marketing efforts to continue being part of their lives. After attracting alumni, the association's intention is to maintain their interest and focus on enhancing customer satisfaction and customer value. The purpose of the present study is to evaluate the customer service delivered by the alumni office to 2,371 Dominican graduates so far reached. Since the foundation of the office, the university hasn't evaluated the perception and attitudes of graduates towards the service offered by alumni office. …

Chinese Glove Puppets - An Interactive Experience Of Puppet History, Teaching And User Created Performance, Yu-Hui Tu

Theses

Chinese Glove Puppets demonstrate the traditional Chinese performing art. It introduces the history, creation, and primal figure types of Chinese Glove Puppetry to provide users a basic understanding. Puppet education and puppet performance demonstrate the puppet movements. Basic puppet manipulation videos demonstrate the basic movements teaching users how the puppeteers control puppets. Real puppet show clips are also available. In order to create more fun, a changeable classic background would be used to replace the original stage and enhance the delight of creating the user's own show. This project is an educational CD-ROM for English users. By combining visual and …

Lorem Ipsum, A Story About Words And Pictures: What They Can Do, And What They Can't, David Huth

Theses

Everything we understand about the world comes to us through, and can be captured by, the linguistic use of words and pictures. Or does it? This is a question that addresses the core function and purpose of visual communications design. The question is explored in this film thematically, narratively, and technically, by portraying a story about a person struggling to understand language and solve a unique, high stakes design problem: the library cataloging of an entire human life. This is a creative project that uses computer graphics design technology and the unique presentation of typographical design problems to provoke thought …

2004 Georgia Southern University Women's Soccer Media Guide, Georgia Southern University

Women's Soccer Records

• Georgia Southern Women's Soccer 2004 Media Guide