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Design Of A New Electromagnetic Valve With A Hybrid Pm/Em Actuator In Si Engines, Ly Vinh Dat, Yaojung Shiao

Journal of Marine Science and Technology–Taiwan

Numerous devices have been developed for controlling valve timings in SI engines. Among them, the electromagnetic valve train (EMV) actuator can fully control valve timings to improve fuel consumption and emission. In addition, an EMV with a permanent-magnet and electromagnetic-coil (PM/EM) hybrid actuator has several advantages of control, energy consumption, and time response compared over conventional EMVs. This paper proposes a novel EMV with a PM/EM hybrid actuator that differs considerably from existing EMVs. Finite element analysis was used for analyzing the EMV design. The optimization was based on criteria that ensured the EMV to satisfy holding forces in closed …

Effective Orifice Area Of A Newly Developed Polyurethane Aortic Valve: Manufacturing And Evaluation, Wu-Chiao Shih, Ha-Hai Vu, Cheung-Hwa Hsu, Kai-Wen Yang, Yaw-Hong Kang

Journal of Marine Science and Technology–Taiwan

An optimal design for a polyurethane (PU) aortic valve was developed in a previous study. The current study investigated an approach for manufacturing PU aortic valves, evaluating the effective orifice areas (EOAs) of the prototypes. Two manufacturing approaches, assembly and single-piece forming methods, were developed. In the assembly method, support frames and valve leaflets were manufactured separately and then glued together by using an adhesive substance. By contrast, in the single-piece forming method, two main components of the valve were fabricated simultaneously by using a molding technique. This study established an experimental loop that mimics natural circulation from the left …

Discoid And Asymmetrical Gyroless Micro-Satellite Off-Modulation Attitude Control With Kalman Filter, Ho-Nien Shou

Journal of Marine Science and Technology–Taiwan

The gyroless attitude control method and kalman algorithm procedures presented in this paper are applicable to asymmetrical microsatellites of any shape with large mass variation and without angular rate sensors. The attitude sensors include a three-axis magnetometer, a horizon sensor, and a coarse sun sensor (CSS), which together serve as an analytic platform and help in ensuring the stability of attitude controls. The attitude control problem of microsatellites has become a focal point because microsatellite fabrication processes are short, costless, and can be flexibly used for various purposes. The center of mass of the microsatellite can be offset because of …

Applying Fuzzy Logic Controller To Intelligent Solar Panel Cleaning System, Cong-Hui Huang

Journal of Marine Science and Technology–Taiwan

This paper presents an intelligent solar panel cleaning system that utilizes a fuzzy logic controller. The output voltage of the solar panel is applied to calculate whether to activate the cleaning mechanism. The direction and position of the system is set using a light sensor that is parallel to the direction of the sunlight. The data from the light sensors, combined with fuzzy logic control software developed using LabVIEW, determine the control commands (stop, forward, and reverse) for the stepper motors controlling the cleaning process. The cleaning process, which is repeated until the power output from the solar panels is …

Synthetic Physical Models For Animating Unsteady Fish Motions, Shyh-Kuang Ueng, Hong-Kai Chen

Journal of Marine Science and Technology–Taiwan

This paper presents physical models for simulating unsteady fish motions, including bursting, gliding, braking, turning, ascending and descending. A new wave model, the controllable body wave model, is developed to undulate the fish body to produce bursting and gliding motions. A key frame approach is adopted to realize braking, turning, descending and ascending. In the key frame method, individual motions are decomposed into sequences of key steps. The gestures of the fish in these key steps are recorded and regarded as key frames. In the run time, these recorded key frames are sequentially reproduced to generate swimming patterns. In addition …

Modeling And Control Of A Novel Ball Screw Mechanism, Wen-Hsiang Hsieh, Kai-Bi Chang

Journal of Marine Science and Technology–Taiwan

This study proposes a systematic approach for the design and control of a novel ball screw transmission system. We investigated the structure of the system, performed kinematic analysis, and conducted dimensional synthesis by optimization. The mathematical model of the system was determined by system identification and a refined PID controller was designed. Computer simulation was conducted to verify the feasibility of the proposed design. A prototype machine and an experimental setup were built and tested. The experimental results show that the output with the controller agrees well with the required output. Therefore, the proposed design can produce the expected output …

Fault Diagnosis And Performance Assessment For A Rotary Actuator Based On Neural Network Observer, Jian Ma, Xin Li, Chen Lu, Zi-Li Wang

Journal of Marine Science and Technology–Taiwan

Substantial damage may occur when a rotary actuator fails during operation. Therefore, effective fault diagnosis of a rotary actuator is crucial to ensuring the safety of the device. However, only a few studies on fault detection, fault isolation, and performance assessment have focused on rotary actuators. In this study, fault detection and fault isolation processes were implemented by designing two observers based on a neural network, and a method that assesses the performance of the rotary actuator is proposed. First, two observers are established according to the structure of the rotary actuator. Data in their normal state are used to …

Language Skill Development In Japanese Kokugo Education: Analysis Of The Television Program Wakaru Kokugo Yomikaki No Tsubo, Ruri Yoshii

Dissertations and Theses

Any type of education implemented by a modern nation-state is, at least in part, a tool for socializing its people. In this regard, Japanese language and literature education, kokugo, has played an important role in Japan by emphasizing nationalism and the integrity of a Japanese identity. According to Ishihara (2007) and Lee (1996 [English translation 2010]), kokugo, since its inception in 1900, has promoted moral awareness and assimilation of Japanese ideals across the country. However, responding to unsatisfactory test results in the Program for International Student Assessment (PISA) in 2003 and 2006, Japan's Ministry of Education Culture, Sports, Science and …

Accelerating Heuristic Search For Ai Planning, You Xu

McKelvey School of Engineering Graduate Student Theses & Dissertations

AI Planning is an important research field. Heuristic search is the most commonly used method in solving planning problems. Despite recent advances in improving the quality of heuristics and devising better search strategies, the high computational cost of heuristic search remains a barrier that severely limits its application to real world problems. In this dissertation, we propose theories, algorithms and systems to accelerate heuristic search for AI planning.

We make four major contributions in this dissertation. First, we propose a state-space reduction method called Stratified Planning to accelerate heuristic search. Stratified Planning can be combined with any heuristic search to …

Um's Six Most Interesting Research Stories Of 2014, Edwin B. Smith

University of Mississippi News

From tortoises to teachers, scientific strides made national headlines

Kaczmarz Iterative Projection And Nonuniform Sampling With Complexity Estimates, Tim Wallace, Ali Safak Sekmen

Computer Science Faculty Research

Kaczmarz’s alternating projection method has been widely used for solving mostly over-determined linear system of equations Ax = b in various fields of engineering, medical imaging, and computational science. Because of its simple iterative nature with light computation, this method was successfully applied in computerized tomography. Since tomography generates a matrix A with highly coherent rows, randomized Kaczmarz algorithm is expected to provide faster convergence as it picks a row for each iteration at random, based on a certain probability distribution. Since Kaczmarz’s method is a subspace projection method, the convergence rate for simple Kaczmarz algorithm was developed in …

The Relation Between Couple Communication And Work-Family Conflict, Klaudia Konik

Honors Projects

In studies examining work-family conflict, much of the attention has been focused on control at work (Radcliffe & Cassel, 2014). The purpose of the study was to examine the relationships between couple communication at home and experienced job satisfaction, relationship satisfaction, and overall work-family conflict. Though hypotheses specifically examining communication frequency were not fully supported, post-hoc analyses revealed unique relationships between specific communication patterns and skills and work-family conflict, especially when examining family-to-work influences. Suggestions for future research to examine the benefits of teaching communication skills at work and how they may impact work-family conflict are also discussed.

Snowboard, Ski, And Skateboard Sensor System Application, Adrien Doiron, Michael Fernandez, Victor Ojeda, Robert Ross

Mechanical Engineering Senior Theses

The goal of this project was develop a sensor for the commercial market for skiers, snowboarders, and skateboarders that can give them the data such as speed, elevation, pressure, temperature, flex, acceleration, position, and other performance data such as trick characterization. This was done by using a variety of sensors, including a GPS, flex sensors, accelerometer, and others to provide data such as speed, position, position, and temperature. The sensors were placed in an external polycarbonate casing attached to the ski or board by using an adhesive pad on the bottom of the casing. These sensors then transmit the data …

Newsroom, Georgia Southern University

Newsroom (2006-2023)

• Georgia Southern University ROTC Cadet Ranks Fourth in Nation

Prioritizing Restoration Actions For The Islands Of Mexico, M. Latofski-Robles, A. Aguirre-Muñoz, F. Méndez-Sánchez, H. Reyes-Hernández, S. Schlüter

Monographs of the Western North American Naturalist

Science-based planning and prioritization can help achieve greater return on investment of limited conservation funds. We conducted a GIS-based multicriteria decision analysis to prioritize efforts to eradicate populations of invasive alien species that threaten native biota on the islands of Mexico. We evaluated 29 Mexican islands with documented presence of invasive mammals and characterized the following attributes of each island: presence of endemic taxa, presence of threatened species, presence of important seabird nesting areas, species richness, likelihood of reinvasion, eradication feasibility, and economic cost. We categorized the islands into 4 priority categories for eradication action. The highest priority islands where …

Status And Trends Of The Rocky Intertidal Community On The Farallon Islands, Jan Roletto, Scott Kimura, Natalie Cosentino-Manning, Ryan Berger, Russell Bradley

Monographs of the Western North American Naturalist

The Farallon Islands in the Gulf of the Farallones National Marine Sanctuary (GFNMS) is a 7-island chain located 48 km west of San Francisco, California. Since 1993, GFNMS biologists and associates have monitored algal and invertebrate species abundances on the intertidal shores of the 2 South Farallon Islands. The monitoring occurred 1–3 times yearly in 6 study areas. In each study area, 3–4 permanent, 0.15-m² quadrats located between the upper and midintertidal zones were sampled for algal and sessile invertebrate cover and invertebrate counts. Taxonomic surveys were also completed to document other species in the vicinity of the sampling …

Does Atkins Make A Difference In Non-Capital Cases? Should It?, Paul Marcus

William & Mary Bill of Rights Journal

No abstract provided.

Sentencing Roulette: How Virginia’S Criminal Sentencing System Is Imposing An Unconstitutional Trial Penalty That Suppresses The Rights Of Criminal Defendants To A Jury Trial, Caleb R. Stone

William & Mary Bill of Rights Journal

No abstract provided.

A Tale Of Two (And Possibly Three) Atkins: Intellectual Disability And Capital Punishment Twelve Years After The Supreme Court’S Creation Of A Categorical Bar, John H. Blume, Sheri Lynn Johnson, Paul Marcus, Emily Paavola

William & Mary Bill of Rights Journal

No abstract provided.

How The Esa Can Swallow Alaskan Tribal Sovereignty: The Story Of The Iliamna Lake Seals, Charisse Arce

American Indian Law Journal

No abstract provided.

Habitat And Harvest: The Modern Scope Of Tribal Treaty Rights To Hunt And Fish, Whitney Angell Leonard

American Indian Law Journal

No abstract provided.

Fundamentals Of Contracting By And With Indian Tribes, Michael P. O'Connell

American Indian Law Journal

No abstract provided.

The Influence Of Dx-52-1 And Phosphorylation On The Interactions Of Galectin-3 With Its Binding Partners, Matthew L. Rotondi

Doctoral Dissertations

The Influence of DX-52-1 and Phosphorylation on the Interactions of Galectin-3 with its Binding Partners

Matthew L. Rotondi, PhD

University of Connecticut, 2015

Galectin-3, a member of a large family of animal based β-galactoside-binding lectins has been shown to play a role in a number of cellular and pathogenic processes. This protein has been shown throughout the literature to interact with a diverse multiplicity of proteins, involved in a diverse array of cellular functions, including cell migration and cell proliferation, both of which are of particular in regards to cancer research. Covalent modifications to Galectin-3 that can undermine its binding …

Cyclooxygenase-2, Prostaglandin E2, And Prostanoid Receptor Ep2 In Fluid Flow Shear Stress-Mediated Injury In The Solitary Kidney., Tarak Srivastava, Uri S. Alon, Patricia A. Cudmore, Belal Tarakji, Alexander Kats, Robert E. Garola, R Scott Duncan, Ellen T. Mccarthy, Ram Sharma, Mark L. Johnson, Lynda F. Bonewald, Ashraf El-Meanawy, Virginia J. Savin, Mukut Sharma

Manuscripts, Articles, Book Chapters and Other Papers

Hyperfiltration subjects podocytes to increased tensile stress and fluid flow shear stress (FFSS). We showed a 1.5- to 2.0-fold increase in FFSS in uninephrectomized animals and altered podocyte actin cytoskeleton and increased synthesis of prostaglandin E2 (PGE2) following in vitro application of FFSS. We hypothesized that increased FFSS mediates cellular changes through specific receptors of PGE2. Presently, we studied the effect of FFSS on cultured podocytes and decapsulated isolated glomeruli in vitro, and on solitary kidney in uninephrectomized sv129 mice. In cultured podocytes, FFSS resulted in increased gene and protein expression of cyclooxygenase (COX)-2 but not COX-1, prostanoid receptor EP2 …

Music By Bregman '14 Selected For Documentary, University Communications, Illinois Wesleyan University

News and Events (Discontinued Series)

No abstract provided.

President Wilson Announces Plans To Retire, Matt Kurz

News and Events (Discontinued Series)

No abstract provided.

Conflicted Union: Culture, Economics And European Union Media Policy, Daphney Pernola Barr

Theses and Dissertations

The constant tension between internal market development and cultural preservation remain within European Union audiovisual media services regulatory policy. While market harmonization and liberalization are key to developing a formidable European media market, the preservation of and promotion of ‘European-ness’ depends upon the protection of cultural diversity, a necessity for a confederation of 27 sovereign nation-states with distinct cultures and languages. It may not currently be possible to reconcile the intrinsic duality of audiovisual media through EU regulatory policy mechanisms. However, a regulatory policy clearly that addresses the potential of cultural harmonization/economic liberalization conflict, that explicitly connects the EU’s audiovisual …

Modeling Mussel Mortality: Investigating The Importance Of Swash And The Potential Implications Of Changing Wave Environments, Shadow Leigh Gulledge

Theses and Dissertations

Rising sea level and increases in temperature are causing biogeographic shifts in intertidal zones and can also lead to shifts in the local vertical zonation of organisms due to changes in body temperature during aerial exposure during low tide. Swash is an important determinant of aerial body temperatures, and vulnerability of intertidal zones to changes in climate could potentially depend on how much and how often animals are cooled by waves. While wave heights (and thus swash) are generally expected to increase with climate change, anthropogenic physical structures, such as breakwaters and wave energy converters, can decrease wave height and …

The Effects Of Multiple Gratitude Interventions Among Informal Caregivers Of Persons With Dementia And Alzheimer's Disease, Cristy Degregory

Theses and Dissertations

The purpose of this group randomized intervention trial was to examine the impact of participation in three telephone-based gratitude interventions on the physical, psychological and social functioning of participants in caregiver support groups who are unpaid family caregivers of persons with dementia and Alzheimer’s disease. Fredrickson’s (2001) Broaden-and-Build Theory informed the investigation of the effect of three gratitude interventions on participants’ levels of gratitude, positive aspects of caregiving, subjective well-being, physical health and mental health. This was a randomized, wait-list controlled study involving informal caregivers involved in support groups. The research questions were: 1.) How does gratitude contribute to subjective …

Alterations To Taste Preference In Mc4r Haploinsufficiency Manifest Prior To Dietary Induced Obesity And Are Accompanied By Dendritic Spine Alterations To Medium Spiny Neurons Of The Nucleus Accumbens In Adulthood, Robert Francis Roscoe Jr.

Theses and Dissertations

Obesity has reached epidemic proportions in the United States and has become an increasing public health concern for developed nations. Haploinsufficiency of melanocortin receptor 4 has been identified as the single most common monogenetic cause of obesity in humans. Using the MC4R +/- haploinsufficient rat, we sought to determine potential alterations in body weight and morphology, locomotor activity, sucrose concentration preference, and progressive-ratio operant testing in a dietary-induced obesity environment. Rats were placed on four separate diets corresponding to 1.7% saturated fat with 12.2% total kcal/fat, 6% saturated fat with a 40% total kcal/fat, 12% saturated fat with a 40% …