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Performance Evaluation Of Three Types Of Passive Micromixer With Convergent-Divergent Sinusoidal Walls, Arshad Afzal, Kwang-Yong Kim

Journal of Marine Science and Technology–Taiwan

A passive split-and-recombination micromixer with convergent-divergent channel walls of sinusoidal variation has been investigated using numerical simulations. With water and ethanol as working fluids, the analysis was performed using Navier-Stokes equations with convection-diffusion model in a Reynolds number range, 10  Re  70. Performances of three configurations with different split-and-recombination arrangements were evaluated in terms of mixing index and pressure drop. A parametric study was also conducted with two geometrical parameters, i.e., the ratios of throat-width to diameter of circular wall and diameter of circular wall to amplitude. The results showed a significant dependence of the mixing performance on …

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 …

Analysis Of Heart Rate Variability Amongst Cyclists Under Perceived Variations Of Risk Exposure, Ronan Doorley, Vikram Pakrashi, Eoin Byrne, Samuel Comerford, Bidisha Ghosh, John A. Groeger

NIMBUS Articles

Cycling as a mode of travel provides an opportunity for many people to increase their levels of regular physical activity and contribute to their mental and physical health. Heart rate is often used as a means of measuring the intensity and energy expenditure of physical activity. However, heart rate is also linked to emotional factors such as anxiety and fear. Perceptions of risk due to external factors such as other road users and infrastructure may arouse such emotions in urban cyclists. The present study set out to investigate whether or not perceptions of risk among urban cyclists may lead to …

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 …

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.

How School Leadership Develops Parental Involvement Strategies With Social Capital In Four South Carolina Middle Schools, Anthony Neil Boatwright

Theses and Dissertations

Passed in 2001, the No Child Left Behind (NCLB) mandate requires schools to have a comprehensive plan for addressing parental involvement. Identifying successful practices to increase social capital and academic achievement in lower socio-economic schools appears to be the area that is having the most impact. Principals can contribute to higher success rates by generating productive partnerships between the school and parents/guardians. The purpose of this study is to describe the parental involvement strategies that four successful South Carolina (SC) middle school principals used and to identify successful practices being implemented to increase social capital and academic achievement. The researcher …

Toward A Theory Of Safe Passage: Agentic Practices Of Women Writers Who Teach, Lillian Gordon Reeves

Theses and Dissertations

Past studies show that narrative is an effective tool for guiding teachers to develop teacher identity, to recognize their practical knowledge, and to engage in teacher transformation, especially during initial teacher training and the early years of their career. Consequently, other researchers have identified how narrative studies inform what we know about teachers’ identities, their practical knowledge, and their transformations during initial training and early career teaching. However, we do not know how narrative functions in the experiences of teachers beyond initial teacher training and early career teaching. This study intends to fill this gap in the research. In this …

The Influence Of Confucianism On Identity Formation Of A Multi-Skilled Migrant: An Autoethnography, Annabella Fung

The Qualitative Report

In this autoethnographical study, I examine how my identities were influenced by Confucianism. Two main Confucian concepts were examined: “selfperfection,” and “filial piety and submissiveness.” As a migrant who left Macau for Australia at fifteen, I have been immersed in diverse cultural climates, experienced gender bias, identity crisis and racial discrimination. I consider all experiences as essential steps of my evolution with ethnographic, interpretative, phenomenological and narrative understandings. This paper introduces the term “seasonal fluctuations” as a way to describe the changing meanings of my lived experiences that were interrogated by my three distinctive personalities: The Writer, The Interpreter and …

What's Wrong With Me?: An Autoethnographic Investigation Of The Co-Cultural Communicative Practices Of Living With Tourette Syndrome During Adolescence, Mark Congdon Jr.

The Qualitative Report

Using an Autoethnographic methodology, this essay explores how I was diagnosed with Tourette Syndrome. My experience illustrates a dynamic and difficult process of understanding and negotiating assimilation, using a variety of communication strategies related to self-perception, perceptions of others, and interactions with others. Using Co-Cultural theory (CCT) as a theoretical framework, three themes emerged from my experience: (1) nonassertive assimilation: negotiating with relationships of authority, (2) aggressive assimilation: negotiating relationships with peers, and (3) nonassertive separation: the convergence of negotiating relationships of authority and with peers. It is my hope that my story expands the awareness and conversation among and …

Connecting The Dots: A Review Of Norman K. Denzin's Interpretive Autoethnography, Victoria Landu

The Qualitative Report

The interpretive autoethnography by Denzin (2014) described the interpretive autoethnography as a biographical study of life experiences and performance of a person. Using examplars, the author tried to connect the dots between lives, performance, the epiphany and its’ interpretation. It also explained strategies to conducting interpretive autoethnography. The book defined several genealogies of terms which helped to broaden the understanding of the explanation of process and performance in autoethnography. The book presented some of the pitfalls to avoid when conducting interpretive autoethnography. Defining several genealogies of terms, the book explained process and performance in autoethnographic study.

Taxonomy, Host-Plant Associations And Phylogeny Of African Crotalaria-Feeding Seed Beetles (Coleoptera, Chrysomelidae, Bruchinae): The Conicobruchus Strangulatus (Fåhraeus) Species Group, Bruno P. Le Ru, Alex Delobel, Zoltán György, Gwenaëlle Genson, Gael J. Kergoat

All Peer-Reviewed Publications

A small group of six morphologically related seed beetles (Coleoptera: Chrysomelidae: Bruchinae) belonging to the Conicobruchus genus is reviewed. Species in this group for which host-plants are known feed on various species of Crotalaria (Fabaceae, Crotalarieae). Here we provide diagnoses and a dichotomous key for all six species. The following synonymies are proposed: Conicobruchus cicatricosus (Fåhraeus, 1839) (= Bruchus cicatricosus pallidioripennis Pic, 1941) syn. nov.; Conicobruchus strangulatus (Fåhraeus, 1839) (= Bruchus hargreavesi Pic, 1933) syn. nov. The corresponding Conicobruchus strangulatus species group is hereby designated. New host-plant data are also included, which correspond to the results of recent collections of …

The Influence Of Parent Portal Access On Student Efficacy And Parental Involvement, Shannon D. Dries

Seton Hall University Dissertations and Theses (ETDs)

This study examined the influence of Parent Portal access on student achievement and parental involvement defined as home-to-school communication. The population was students in sixth grade in a suburban district in New Jersey. Academic achievement was defined through GPA at the end of sixth grade and performance on the New Jersey Assessment of Skills and Knowledge (NJ ASK) in both Math and Language Arts Literacy in Grade 6. Attendance was measured using attendance rates. Parental involvement was measured by the number of parent logins to Parent Portal. Multiple regression analyses, backward entry method, were used to determine the influence of …

Building Sanity: The Rise And Fall Of Architectural Treatment At The South Carolina Lunatic Asylum, Kimberly Jean Campbell

Theses and Dissertations

Although many historians have acknowledged the importance of architecture in the treatment of the mentally ill during the nineteenth century, no historian has ever examined the rise and fall of the importance of architecture to the treatment of patients at the South Carolina Lunatic Asylum. By the late eighteenth century, physicians and laymen alike accepted the ideology of environmental determinism – that one’s environment exercised a direct influence over his or her behavior. In other words, mental illness was both caused and cured by the environment; thus, architecture played a key role in the treatment of mental illness. The South …

Science Fairs Before Sputnik: Adolescent Scientific Culture In Contemporary America, Sarah Michel Scripps

Theses and Dissertations

"Science Fairs before Sputnik: Adolescent Scientific Culture in Contemporary America" traces the formation and evolution of science fairs in America, focusing on the ways in which adolescents established communities of practice by engaging in these competitions. Over the course of the twentieth century, generations of American children conducted their first experiments by crafting science fair projects. The dissertation evaluates this understudied phenomenon against the backdrop of American fascinations and fears of science and evolving notions of adolescence. It argues that science fairs were central to shaping an adolescent scientific culture in the United States during the early to mid twentieth …

Gender Influenced Social Welfare Reforms At The South Carolina Confederate Soldiers’ Home And Infirmary: An Institutional History (1908 - 1957), Brian Dolphin

Theses and Dissertations

The South Carolina Confederate Soldiers’ Home and Infirmary in Columbia opened in 1909, serving two aged and infirm veterans per county. The last former Confederate state to establish a residential facility for veterans, South Carolina became the first state to reserve positions for women on the managing board. Women on the Board exercised more power there than at any comparable institution in the South, with policy implications that featured an increasingly inclusive policy for accommodation of women as both Confederate Soldiers’ Home and Infirmary administrators and occupants. When the institution closed in 1957, it had cared for women for a …

Saint Dominguan Refugees In Charleston, South Carolina, 1791-1822: Assimilation And Accommodation In A Slave Society, Margaret Wilson Gillikin

Theses and Dissertations

During the 1790s and the first decade of the nineteenth century, nearly 20,000 refugees fled the French colony of Saint Domingue for asylum in the United States. They found new homes in such American port cities as New York, Philadelphia, Baltimore, Charleston, and New Orleans. This dissertation explores the experiences of the white planters, gens de couleur, and slaves who sought asylum in Charleston, South Carolina, and the effect their presence had on the city’s long time residents. It might seem from first glance that finding acceptance in Charleston would be easy for them, but this was not the case. …

Workplace Harassment: A Cross-Jurisdictional Comparative Analysis Of Legislative Responses To This Workplace Phenomenon In Canada, Kayla Alice Carr

LLM Theses

This thesis investigates different statutory models Canadian legislatures have enacted to address workplace harassment. It adopts a qualitative, comparative case study approach, providing an in-depth comparative analysis of legislation from Québec, Saskatchewan, Ontario, Manitoba and British Columbia. Through this analysis, this thesis outlines the ways in which workplace harassment has been regulated in Canada, why that model was adopted by the jurisdiction and how that model measures against other models for legislating workplace harassment. Through an examination of existing literature relating to workplace harassment stemming from three theoretical paradigms and an analysis of a model legislative framework, this thesis creates …

Breast Cancer: Selected Cytokines In The Clinical Presentation, Sravan Ranjan, Anurag Sinha

Muthanna Medical Journal

Breast cancer is among the most commonly diagnosed cancer types in women worldwide and is the second leading cause of cancer-related disease in the USA. Recent data have suggested that many cytokines may be essential roles in the pathogenesis of breast cancer. The goal of this paper is to examine the major cytokines involved in breast cancer immunotherapy and discuss their basic biology and clinical presentation. IL-1, IL-6, IL-8, IL-10, and TNF-α in patients with breast cancer (n = 63) and healthy individuals as control (n = 68). We found that there were higher levels of IL-6, IL-8, IL-10 and …

Integrating The Arts And Sciences In The Museum Setting, Emily Clare Riggins

Seton Hall University Dissertations and Theses (ETDs)

The division between the arts and sciences appears to be deepening in America. As political leaders emphasize STEM (science, technology, engineering and math) education in schools, arts education is diminished to make room for STEM courses. Concerned about this phenomenon, many art educators are working to integrate the arts into STEM education through a variety of arts integration efforts. Arts integration not only helps to preserve a place for the arts in the curriculum, it also has been shown to enhance STEM learning.

Arts integration is of special interest to art museum educators who feel that they can provide resources …

Metabolic Engineering Of Cyanobacteria For Photosynthetic Production Of Drop-In Liquid Fuels, Bertram Michael Berla

McKelvey School of Engineering Graduate Student Theses & Dissertations

Cyanobacteria are oxygenic phototrophs with great potential as hosts for renewable fuel and chemical production. They grow very quickly (compared with plants) and can use sunlight for energy and CO2 as a carbon source (unlike yeast or E. coli). While cyanobacteria have been engineered to make many chemicals that are native and non-native parts of their metabolism, this work is concerned with the production of heptadecane in Synechocystis sp. PCC 6803. Heptadecane is in a class of natural products produced by all cyanobacteria, but in quantities insufficient for industrialization. Towards this future goal, we have built enabling systems for the …

The Late Ordovician Biogeochemical Carbon Cycle, John Garrecht Metzger

Arts & Sciences Graduate Student Theses and Dissertations

The isotopic composition of the carbonate carbon (δ13Ccarb) is one of the best tools for understanding the biogeochemical carbon cycle through Earth history. δ13Ccarb is also used to chemostratigraphically correlate coeval strata. This dissertation has three main foci that all utilize δ13Ccarb as the common data type. The geologic interval investigated was the Late Ordovician (458-444 Ma) with emphasis on the Guttenberg δ13C excursion, a globally correlated, positive ~3 / event that is ~400 kyr in duration. In the first topic we evaluate post-depositional alteration (i.e., diagenesis) of δ13Ccarb signals. In the second topic, we make reconstructions of sea level …

Gothic Literature And The Politics Of Indistinction, Nicholas Everett Miller

Arts & Sciences Graduate Student Theses and Dissertations

I recover the Gothic as a literature of political possibility. While scholars have long associated the Gothic tradition with political fear, I argue that Gothic novels challenge liberal ideas of the self to produce a sometimes radically egalitarian politics of freedom in the late-eighteenth and early-nineteenth centuries. Edmund Burke made much of the fearfulness of an egalitarian politics in the 1790s, and literary historians have relied on his influence to argue that Gothic fiction is primarily an expression of the fear that comes with the collapse of familial, social, and political distinctions. But fear is not all that accompanies such …