Digital Commons Network^™

Underwater Linear Feature Extraction With Multispectral Band Images: An Evaluation With Level-Set Method In Dongsha Atoll And Zengmu Shoal, Peter Tian-Yuan Shih, Jian-Wei Lin, Cheng-Gi Wang

Journal of Marine Science and Technology–Taiwan

Optical remote sensing satellite images are a useful and convenient source to provide underwater features, particularly for shallow water areas because light, dependent on wavelength, has the capability to penetrate water. In this study, the information richness of underwater features is investigated for each spectral band of the optical images, and also several derived bands. This assessment is performed with the level-set method for segmentation. Two cases are analyzed in this study. The first study site is the Dongsha atoll, which is composed of Dongsha island, lagoon, and surrounding reefs. The water depth ranges from zero to less than 3 …

The Fourth Crusade: An Analysis Of Sacred Duty ‌, Dale Robinson

Honors Theses

The crusades were a Christian enterprise. They were proclaimed in the name of God for the service of the church. Religion was the thread which bound crusaders together and united them in a single holy cause. When crusaders set out for a holy war they took a vow not to their feudal lord or king, but to God. The Fourth Crusade was no different. Proclaimed by Pope Innocent III in 1201, it was intended to recover Christian control of the Levant after the failure of past endeavors. Crusading vows were exchanged for indulgences absolving all sins on behalf of the …

Two Um Band Members Receive Carr Scholarships, Hannah Pickett

University of Mississippi News

No abstract provided.

Changes In Male Hunting Returns, Raymond B. Hames

Department of Anthropology: Faculty Publications

Research on changes in male hunting among hunter-gatherers addresses two important issues in early human evolution: the nature of the family and trade-offs in mating and parenting effort as well as the development of embodied capital. In the hunter-gatherer literature, there is a debate about the function of male hunting that has implications for understanding the role males play in the evolution of the pair bond. The traditional model argues that male hunting and other economic activities are forms of male provisioning or parenting effort designed to enhance a man’s fitness through his wife’s reproduction and the survivorship of their …

Risk Maps And Coastal Defense Criteria In Taiwan, Wei-Po Huang, Lien-Kwei Chien, Lee-Hsueh Lee

Journal of Marine Science and Technology–Taiwan

To promote sustainable development, the Coastal Zone Management Act prescribes that coastal areas should be divided into two levels of protection zones. However, the complexity and variety of coastal defenses and land use cannot be described completely by using these two levels alone. Coastal risk maps, based on natural and manmade characters of a region, showing different degrees of vulnerability and hazard potentials, can aid in making decisions. In this study, the criteria for coastal protection and land use in terms of risk maps were adopted. A tentative risk map was presented for the northern Kaohsiung City coastal area, Southwest …

Capability Of Geostationary Satellite Imagery For Sea Ice Monitoring In The Bohai And Yellow Seas, Hwa-Seon Lee, Kyu-Sung Lee

Journal of Marine Science and Technology–Taiwan

On a regional scale, sea ice monitoring is important for marine transportation, fishery, harbor and offshore structures, and weather forecast. In this study, we attempt to analyze the potential of Geostationary Ocean Color Imager (GOCI) images for regional-scale sea ice monitoring. GOCI images obtained from December 2011 to March 2012 were analyzed to evaluate the frequency that sea ice can be observed in the Bohai Sea and the northern Yellow Sea. In this season, the sea ice distribution varies greatly both temporally and spatially. During the approximate 100-day ice period, GOCI provided relatively cloud-free daily images over sea ice 86% …

A Computational Study On Sensor Localization For Underwater Acoustic Sensor Network In The East Sea Environmental Model, Jinyoung Choi, Kiseon Kim, Sung Chan Jun

Journal of Marine Science and Technology–Taiwan

An underwater acoustic sensor network (UASN) is a promising method for surveillance or monitoring underwater environments. This network may be most applicable as a disaster alarm system against tsunamis and red tides. Sensor measurement data and sensor location information from these networks are important elements for the UASN system. However, global positioning system (GPS) information is not yet available because the electromagnetic signal has high attenuation under the water. Thus, new methods for sensor localization are of great importance to UASN systems. In this paper, an event-driven localization scheme using the constant arrival time surface (ELSUCATS) is proposed to achieve …

Interpretation Of Sar Image Modulation By The Interaction Of Current And Bottom Topography In Gyeonggi Bay With Microwave Scattering Models, Tae-Ho Kim, Chan-Su Yang, Kazuo Ouchi

Journal of Marine Science and Technology–Taiwan

The effect of the interaction between surface currents and bottom topography to the radar cross section (RCS) is investigated using theoretical and numerical scattering models and synthetic aperture radar (SAR) data. First, the ocean waveheight spectrum perturbed by a varying surface current is computed under the wind condition at the time of SAR data acquisition. The surface current data are extracted from the tidal current models. The RCS modulations are then computed using the small perturbation method (SPM) and the numerical scattering model based on the method of moments (MoM) with undulated surface height profiles simulated from the perturbed wave …

Reconstruction And Analysis Of Surface Velocity From Drifters In The Kuroshio Region East Of Taiwan, Kai-Ho Cheng, Chen-Chih Lin, Po-Chun Hsu, Shih-Jen Huang

Journal of Marine Science and Technology–Taiwan

In this study, sea surface velocities derived from drifters were gridded to 0.25 latitude by 0.25 longitude for analysis of the Kuroshio region east of Taiwan. The data for each grid that were originally missing were obtained using the Data Interpolating Empirical Orthogonal Functions (DINEOF) method, which can precisely reconstruct missing data. Compared with the original data, the error of the reconstructed Kuroshio velocity is 0.18  0.03 m/s. By analyzing the reconstructed data, we defined the Kuroshio axis at its maximum surface velocity in the zonal direction of 0.25 latitude along the east coast of Taiwan. The results indicate …

Breaking Barriers: Saudi Women In Non Traditional Careers, Suad Dukhaykh

Student Scholarship

Women occupy only 15.8 percent of the private and public positions occupied by Saudi nationals, according to statistics from the Central Department of Statistics and Information 2015. The Saudi government has highlighted the need to support women's higher education and combat sociopolitical barriers to their employment. Despite facing substantial challenges to entering the labor market, females have made gains in Saudi society; these include higher literacy rates, greater employment, and moderate rates of entry into both positions of leadership and nontraditional careers. Qualitative research was based on semi-structured interviews with 30 women, 18 of whom had nontraditional careers and 12 …

Regulation Of Mycobacterial Transcription Initiation, Jayan Rammohan

Arts & Sciences Graduate Student Theses and Dissertations

Cellular life relies on gene expression, in which DNA is first transcribed into RNA, which is then translated into protein. Transcription is performed by the protein RNA polymerase (RNAP), which interacts with DNA in three sequential events known as initiation, elongation and termination. Mycobacterium tuberculosis (Mtb) represents a global burden to public health, and the transcription factors CarD and RbpA are both essential to Mtb. I have studied the effect of CarD and RbpA on transcription initiation in vitro at the Mtb rrnAP3 promoter. I have shown that CarD stabilizes unwinding of promoter DNA by RNAP using a two-tiered kinetic …

The Dynamic Brain In Action: Cortical Oscillations And Coordination Dynamics, Mahmood Hoseini

Arts & Sciences Graduate Student Theses and Dissertations

Cortical oscillations are electrical activities with rhythmic and/or repetitive nature generated spontaneously and in response to stimuli. Study of cortical oscillations has become an area of converging interests since the last two decades and has deepened our understanding of its physiological basis across different behavioral states. Experimental and modeling work has taught us that there is a wide diversity of cellular and circuit mechanisms underlying the generation of cortical rhythms. A wildly diverse set of functions has pertained to synchronous oscillations but their significance in cognition should be better appraised in the more general framework of correlation between spike times …

A Study On The Role And Regulation Of The Na+-Leak Channel, Non-Selective (Nalcn) In Myometrial Function, Erin Lynn Reinl

Arts & Sciences Graduate Student Theses and Dissertations

Uterine contractions are tightly regulated throughout pregnancy, remaining relatively quiescent for the majority of pregnancy to promote fetal development, while becoming highly activated at term to effectively expel the fetus. Contractions are coordinated through electrical and mechanical coupling of myometrial smooth muscle cells (MSMCs). Ion channel activity, which alters the electrical activity of MSMCs, can directly affect the contraction profile. Thus there is great interest in the field of reproduction to understand which ion channels regulate uterine excitability, and particularly how they may enable the transition from uterine quiescence to uterine activation for labor. The focus thus far has been …

Ongoing And Visually-Evoked Cortical Activity Measured Across Multiple Spatial Scales, Nathaniel Caleb Wright

Arts & Sciences Graduate Student Theses and Dissertations

The visual cortex is a densely-interconnected network of neurons, which receives sensory input from the early visual pathway, and represents information about the visual world in the resulting spatiotemporal activity patterns. These patterns are mediated by cortical interactions that span multiple spatial scales (i.e., neuron-neuron, neuron-population, and population-population). Such interactions are a fundamental property of cortical function, and capture the contribution of the cortex to sensory coding. Yet these interactions are only beginning to be understood, in part because of the challenge of recording ongoing and visually-evoked activity across multiple spatial scales in individual studies. In this thesis, we present …

Plate Waste Trends Of 5​Th​-8​Th​ Grade Students At A Residential Environmental Learning Center, Colleen K. Foehrenbacher

School of Education and Leadership Student Capstone Theses and Dissertations

This descriptive research determined, using aggregated nonselective plate waste measurements, the characteristics of plate waste generated by 5th-8th grade students visiting Eagle Bluff Environmental Learning Center in Lanesboro, Minnesota over the course of 5 years. The results indicated a positive relationship between plate waste and group size; that groups from rural schools wasted less plate waste than schools from urban or suburban locations; and that groups from private schools wasted less than groups from public school groups. Completely eliminating plate waste is unrealistic, but reducing plate waste lowers user costs, makes program operations more efficient, and enhances a program’s success …

Outlining A Sustainable Campus Garden: A Proposal To Revive The Bates Garden, Allison Berman, Zsofia Duarte, Emma Marchetti

Community Engaged Research Reports

Reviving the Bates Garden on the corner of College and Vale Streets is in the institution's best interest, for a campus garden would synthesize Bates College’s ideals of academic rigor, intellectual curiosity, and freedom. Through extensive 1 research, we - students in ENVR 417: Community-Engaged Research - have pinpointed why past attempts at the Garden have failed, and how a revival would succeed. Past engagement with the Garden failed to engage it as a functioning system and put all leadership responsibilities on an existing, full-time staff member, Bill Bergevin the College’s Landscape Architect, which lead to the Garden’s demise. Accordingly, …

Proposal For Strategic Planning For Solid Waste Management In Lewiston, Me, Jonathan Anderson, Brent Feldman, William Sadlo

Community Engaged Research Reports

The city of Lewiston currently has excellent provisions for the disposal of solid waste, making waste disposal for citizens a relatively cheap and efficient process. Solid waste is picked up from residences and then sent to Mid Maine Waste Action Corporation (MMWAC). From there, it is turned into ash and then dumped into the Lewiston landfill. Now over 25 years old, municipal officials are concerned about the long term viability of these current arrangements. After being introduced to the current situation by municipal officials and local politicians, the goals of our project were three-fold: 1. Understand the history of waste …

Predicting The Catch Potential Of Skipjack Tuna In The Western And Central Pacific Ocean Under Different Climate Change Scenarios, Kuo-Wei Yen, Nan-Jay Su, Tooreka Teemari, Min-An Lee, Hsueh-Jung Lu

Journal of Marine Science and Technology–Taiwan

Skipjack tuna (Katsuwonus pelamis) constitute an important migratory species that contributes significantly to the economy and the global fishery industry. Skipjack tuna play a vital role in the marine ecosystem, particularly in tropical waters of the western and central Pacific Ocean (WCPO). However, climate change may affect the characteristics of fishery resources, leading to substantial reallocation and reduction of the biomass of this species in the WCPO. In this study, catch and effort data for skipjack tuna were collected from a purse seine fishery and subsequently analyzed in combination with remote-sensing environmental variables and simulation data from climate models under …

Impact Of Climate Change On Shihmen Reservoir Water Supply, Tai-Yi Chu, Jyun-Long Lee, Wen-Cheng Huang

Journal of Marine Science and Technology–Taiwan

This study evaluated the impact of climate change on the water supply of the Shihmen reservoir in northern Taiwan. Five downscaled general circulation models that represent the daily meteorological data of 2046-2065 were adopted. The future inflow of the Shihmen reservoir was estimated using the tank model. Subsequently, the water supply risk under the given demand and operating conditions was simulated and assessed. Compared with 2004-2011, the average annual precipitation of the Shihmen watershed in 2046-2065 is lower, particularly during the wet season (May-October). Therefore, the risk to the water supply will increase in the first cropping season (from March …

Mobbing, (Dis)Order And The Literary Pig In The Tale Of Colkelbie Sow, Pars Prima, Caitlin Flynn

Studies in Scottish Literature

Sets the portrayal of the pig in the anonymous Scots fifteenth-century poem The Tale of Colkelbie Sow in the context of medieval fears of social disorder and mob rule, drawing on medieval accounts of the criminal trials of unruly pigs and other animals, and recent discussions of Scottish and medieval literary humour.

Integrating Information Into The Engineering Design Process, Michael Fosmire, David Radcliffe

Purdue Information Literacy Handbooks

Engineering design is a fundamental problem-solving model used by the discipline. Effective problem-solving requires the ability to find and incorporate quality information sources. To teach courses in this area effectively, educators need to understand the information needs of engineers and engineering students and their information gathering habits. This book provides essential guidance for engineering faculty and librarians wishing to better integrate information competencies into their curricular offerings. The treatment of the subject matter is pragmatic, accessible, and engaging. Rather than focusing on specific resources or interfaces, the book adopts a process-driven approach that outlasts changing information technologies.

After several chapters …

From Shtetl To Stardom: Jews And Hollywood, Vincent Brook, Michael Renov

Purdue University Press Book Previews

The outsized influence of Jews in American entertainment from the early days of Hollywood to the present has proved an endlessly fascinating and controversial topic, for Jews and non-Jews alike. From Shtetl to Stardom: Jews and Hollywood takes an exciting and innovative approach to this rich and complex material. Exploring the subject from a scholarly perspective as well as up close and personal, the book combines historical and theoretical analysis by leading academics in the field with inside information from prominent entertainment professionals. Essays range from Vincent Brook’s survey of the stubbornly persistent canard of Jewish industry “control” to Lawrence …

Idealizing Patriarchy: Patterns Of Hierarchy And Patriarchal Values In English Household Literature, 1520-1600, Conor Howard

Honors Theses

This thesis examines English household literature of the sixteenth century to assess normative patterns of masculinity and patriarchy. Throughout that century, in spite of prolific changes having occurred in the realm of English material and intellectual culture, the patterns of masculinity observed in these texts show a remarkable pattern of consistency. This lack of change is in keeping with the works of other historians who have argued that the most salient feature of the norms of English masculinity throughout the early modern period was in fact continuity. Chapter one of this thesis shows how this body of literature prescribed access …

Future Historiographers: A Unit Plan For Progressive History Classrooms, Holli Sommerfeld

Honors Theses

It is this unit plans goal to introduce middle school students to historiography, which is the history of how history has been written across time. Within this unit plan, students are placed in an inquiry-based environment to dissect varying source materials; during this process, students will focus on three central components that are essential to understanding how history is told, these being content, perspective, and form of writing. Though this subject matter is rarely introduced to students at this age, through the use of an interdisciplinary approach incorporating the strengths of both English and History, careful scaffolding, a collaborative learning …

Stability And Redispersion Of Platinum Nanoparticle Suspensions For Attachment To Dyes In Low-Cost Solar Cells, Jeffrey Rothstein

Honors Scholar Theses

The project involves optimizing the synthesis, washing, and redispersion of platinum nanoparticles. The nanoparticles are to be attached to dye molecules where they will act as nanocatalysts to reduce energy losses in low-cost dye-sensitized solar cells. The goal is to develop a process based on a pure or mixed solvent that will maintain a stable dispersion of the nanoparticles without interfering with their ability to bond with the dye molecules in the solar cell.

Tumor-Derived Factors And Reduced P53 Promote Endothelial Cell Centrosome Over-Duplication, Zhixian Yu, Kevin P. Mouillesseaux, Erich J. Kushner, Victoria L. Bautch

Biological Sciences: Faculty Scholarship

Approximately 30% of tumor endothelial cells have over-duplicated (>2) centrosomes, which may contribute to abnormal vessel function and drug resistance. Elevated levels of vascular endothelial growth factor A induce excess centrosomes in endothelial cells, but how other features of the tumor environment affect centrosome over-duplication is not known. To test this, we treated endothelial cells with tumor-derived factors, hypoxia, or reduced p53, and assessed centrosome numbers. We found that hypoxia and elevated levels of bone morphogenetic protein 2, 6 and 7 induced excess centrosomes in endothelial cells through BMPR1A and likely via SMAD signaling. In contrast, inflammatory mediators IL-8 …

Assessment Of Landform Changes In Baramarae Tidal Flat, Korea Using Combined Analysis Of Multi-Temporal Remote Sensing Images And Grain Size Measurement Data, Yeseul Kim, Dong-Ho Jang, No-Wook Park, Hee Young Yoo

Journal of Marine Science and Technology–Taiwan

In this study, information on landform change in Baramarae tidal flat, Korea is analyzed using multi-temporal Landsat images and grain size measurement data. Unlike previous studies that focused on the extraction of topographic changes from intertidal digital elevation models (DEMs), information on landform change is assessed in the present study by considering both topography and surface sediment characteristics. DEMs in 2000 and 2010 were first generated using waterlines extracted from 16 Landsat images. Mean grain size distribution maps were also generated by interpolating sample data acquired in the field in 2002 and 2012. The non-spatial and spatial characteristics of the …

Classification Of Intertidal Sediment Using A Two-Step Principal Component Analysis (Pca) Of Optical Reflectance: A Case Study In Ganghwa Tidal Flats, Dong-Jae Kwon, Wook Park, Joong-Sun Won

Journal of Marine Science and Technology–Taiwan

Sediment distribution within intertidal flats varies widely, ranging from mud-dominant to sand-dominant, with extensive seasonal changes. However, retrieving grain size information from remotely sensed data is difficult because the optical reflectance of intertidal sediment is not a function of a single parameter but varies according to water content, grain size, topography, surface water, benthic algae, and halophytes. Among these, grain size and water content are two important parameters. The fact that intertidal sediments are always affected by tide necessitates the development of a water-independent grain size retrieval model. Mud and sand sediment are known to be well distinguished under dry …

Mixed-Integer Optimization Problems With Applications To Manufacturing Scheduling And Distributed Energy System Operation, Bing Yan

Doctoral Dissertations

Archival abstract submitted

An Efficient Solution Methodology For Mixed-Integer Programming Problems Arising In Power Systems, Mikhail Bragin

Doctoral Dissertations

For many important mixed-integer programming (MIP) problems, the goal is to obtain near-optimal solutions with quantifiable quality in a computationally efficient manner (within, e.g., 5, 10 or 20 minutes). A traditional method to solve such problems has been Lagrangian relaxation, but the method suffers from zigzagging of multipliers and slow convergence. When solving mixed-integer linear programming (MILP) problems, the recently adopted branch-and-cut may also suffer from slow convergence because when the convex hull of the problems has complicated facial structures, facet-defining cuts are typically difficult to obtain, and the method relies mostly on time-consuming branching operations. In this thesis, the …