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Articles 451 - 480 of 3930
Full-Text Articles in Physical Sciences and Mathematics
Under-Water Noise Pollution Sources, Mitigation Measures In Commercial Vessels: The Trade-Off Analysis In The Case Of Study For Trans Mountain Project, Port Of Vancouver, Canada., Seyedvahid Vakili
World Maritime University Dissertations
No abstract provided.
Harnessing The Potentials Of Blue Economy For Sustainable Development Of Nigeria, Hammed Damilare Ibrahim
Harnessing The Potentials Of Blue Economy For Sustainable Development Of Nigeria, Hammed Damilare Ibrahim
World Maritime University Dissertations
No abstract provided.
Challenges Towards Sustainable Port Development In India: The Adverse Effects Of Port Development On Coastal Ecology And Community In Ennore : A Case Study, Balaji Balasubramanian
Challenges Towards Sustainable Port Development In India: The Adverse Effects Of Port Development On Coastal Ecology And Community In Ennore : A Case Study, Balaji Balasubramanian
World Maritime University Dissertations
No abstract provided.
Challenges Towards Sustainable Port Development In India: The Adverse Effects Of Port Development On Coastal Ecology And Community In Ennore : Case Study, Balaji Balasubramanian
Challenges Towards Sustainable Port Development In India: The Adverse Effects Of Port Development On Coastal Ecology And Community In Ennore : Case Study, Balaji Balasubramanian
World Maritime University Dissertations
Ports and shipping play a crucial role in the coastal development, however, it possesses numerous potential risks to the marine environment and the coastal community. Sustainable development is a key concept which integrates the triple bottom line: economic, environmental and social elements into all aspects of decision making. This paper explores and analyses the challenges towards the progression of sustainable development of Indian ports, taking the Ennore port in India as a case study. My objectives in this research were to highlight the lack of consensus on the importance of the two pillars, environmental and social in the concept of …
Evaluating The Need For Ocean Literacy In South Africa, Eugene Nyman
Evaluating The Need For Ocean Literacy In South Africa, Eugene Nyman
World Maritime University Dissertations
Pressures on the ocean are increasing due to anthropogenic activities, which has a caused decline in the health of the ocean. This has adversely affected the services and goods that populations are able to derive from the ocean. Various international agreements and partnerships, have been adopted to stem the human pressures on the ocean. However, the decline in the health of the ocean, has persisted. Ocean literacy is summarised by UNESCO (2017) as an individual being able to understand the influence they have on the ocean, and the ocean’s influence on their life. The concept has been developed with the …
Community-Based Organisations As An Approach To Effective Sustainable Artisan Fishing, Mary Mindi Wabit Epse Ngawana
Community-Based Organisations As An Approach To Effective Sustainable Artisan Fishing, Mary Mindi Wabit Epse Ngawana
World Maritime University Dissertations
Fishing in Cameroon is one of the main economic activities and lifeline of the coastal communities in the South West Region of Cameroon, especially the artisanal fishing which is mostly traditional and subsistence. Cameroon fisheries are either fully exploited or are already in the critical state of over-exploitation by foreigners and local communities. However, illegal fishing and aggressive fishing practices in the marine environment has led to over exploitation of the fisheries, mangroves and environmental deterioration. There is an urgent need to develop and introduce effective and efficient sustainable approaches, to the exploitation and management of Cameroon’s fisheries and other …
A Study On The Definition Of Ship Related Seaborne Oil Transportation, Seokjin Kang
A Study On The Definition Of Ship Related Seaborne Oil Transportation, Seokjin Kang
World Maritime University Dissertations
No abstract provided.
The Conception, Planning And Implementation Of Integrated Coastal And Ocean Management For Sustainable Blue Economy In Bangladesh, Sabbir Mahmood, Harunur Rashid
The Conception, Planning And Implementation Of Integrated Coastal And Ocean Management For Sustainable Blue Economy In Bangladesh, Sabbir Mahmood, Harunur Rashid
World Maritime University Dissertations
No abstract provided.
Exploring New Paradigms For Mobile Edge Computing, Yutao Tang
Exploring New Paradigms For Mobile Edge Computing, Yutao Tang
Dissertations, Theses, and Masters Projects
Edge computing has been rapidly growing in recent years to meet the surging demands from mobile apps and Internet of Things (IoT). Similar to the Cloud, edge computing provides computation, storage, data, and application services to the end-users. However, edge computing is usually deployed at the edge of the network, which can provide low-latency and high-bandwidth services for end devices. So far, edge computing is still not widely adopted. One significant challenge is that the edge computing environment is usually heterogeneous, involving various operating systems and platforms, which complicates app development and maintenance. in this dissertation, we explore to combine …
Evaluating The Use Of Larval Connectivity Information In Fisheries Models And Management In The Gulf Of Mexico, Michael Drexler
Evaluating The Use Of Larval Connectivity Information In Fisheries Models And Management In The Gulf Of Mexico, Michael Drexler
USF Tampa Graduate Theses and Dissertations
Connectivity is a major contributor to the overall dynamics of marine populations. However, it still remains challenging to describe connectivity on ecologically meaningful scales of time and space. This is a major impediment to evaluating the impacts of marine protected area with respect to fisheries management objectives.
This dissertation brings together a wide array of spatial and connectivity information in the Gulf of Mexico (GOM) with the goal of 1) understanding the spatial distribution of fish populations and source-sink dynamics and 2) evaluating whether this information can be integrated, through a modeling framework, to identify closed areas that could be …
Quantifying The Probability Of Lethal Injury To Florida Manatees Given Characteristics Of Collision Events., B. Lynn Combs
Quantifying The Probability Of Lethal Injury To Florida Manatees Given Characteristics Of Collision Events., B. Lynn Combs
USF Tampa Graduate Theses and Dissertations
Wherever wildlife share space with boaters, collisions are a potential source of mortality. Establishing protection and speed zones are the primary actions taken to mitigate collision risk. However, creation of protection zones may be a point of contention with stakeholders as new zones can have significant socioeconomic impacts. The Florida Manatee is a prime example of a species whose abundance and viability are constrained by this balance between the needs of humans and wildlife on a shared landscape. The goal of this work is to help further understand the risk to manatees by quantifying the probability of lethal collisions. I …
The Electrochemical Study Of Simulated Spent Nuclear Fuel (Simfuel) Corrosion Under Permanent Disposal Conditions, Ziyan Zhu
Electronic Thesis and Dissertation Repository
The safety assessment of spent nuclear fuel under permanent disposal conditions requires examination of the corrosion of the spent fuel waste form (UO2) inside a failed waste container. The objective of this research project was to develop a detailed mechanism of the UO2 corrosion process when exposed to groundwater. The redox conditions within a failed container in a deep geologic repository will be complex. The oxidant, H2O2, produced by the α-radiolysis of groundwater, will be the main driving force for fuel corrosion. However, the efficiency of fuel dissolution will be determined by the …
Measuring And Modeling Evolution Of Cryoconite Holes In The Mcmurdo Dry Valleys, Antarctica, Felix Jacob Zamora
Measuring And Modeling Evolution Of Cryoconite Holes In The Mcmurdo Dry Valleys, Antarctica, Felix Jacob Zamora
Dissertations and Theses
Cryoconite holes are vertical columns of meltwater within the shallow subsurface of glaciers. In the McMurdo Dry Valleys (MDV) of Antarctica cryoconite holes are a source of meltwater and harbor microbial communities in an otherwise arid environment with low biologic activity. The holes form as sediments on the ice surface, which are darker than the surrounding ice, are preferentially heated by solar radiation. The warm sediments melt the underlying ice and migrate downwards. An ice lid forms, isolating them from the below-freezing atmosphere enabling them to remain thawed. In this study, field observations, laboratory experiments, and numerical modeling are used …
Analysis And New Applications Of Metal Organic Frameworks (Mof): Thermal Conductivity Of A Perovskite-Type Mof And Incorporation Of A Lewis Pair Into A Mof., Wilarachchige D C B Gunatilleke
Analysis And New Applications Of Metal Organic Frameworks (Mof): Thermal Conductivity Of A Perovskite-Type Mof And Incorporation Of A Lewis Pair Into A Mof., Wilarachchige D C B Gunatilleke
USF Tampa Graduate Theses and Dissertations
Metal organic frameworks have gained much attention due to their tunable pore sizes and very high surface areas. With the discovery many of these type materials the need has raised to look into new applications of theses porous frameworks. This thesis focuses on the synthesis of a new perovskite-type metal organic framework and measurement of its thermal conductivity in search of its applicability as a thermoelectric material. The second part of this work focuses on the synthesis of a metal organic framework incorporated with a Lewis pair for the first time. The optimum loading amount of the Lewis pair into …
Integrating Towed Underwater Video With Multibeam Acoustics For Mapping Benthic Habitat And Assessing Reef Fish Communities On The West Florida Shelf, Alexander Ross Ilich
Integrating Towed Underwater Video With Multibeam Acoustics For Mapping Benthic Habitat And Assessing Reef Fish Communities On The West Florida Shelf, Alexander Ross Ilich
USF Tampa Graduate Theses and Dissertations
Using a towed underwater video camera system, benthic habitats were classified along transects in a popular offshore fishing area on the West Florida Shelf (WFS) known as “The Elbow.” Additionally, high resolution multibeam bathymetry and co-registered backscatter data were collected for the entire study area. Using these data, full coverage geologic and biotic habitat maps were developed using both unsupervised and supervised statistical classification methodologies. The unsupervised methodology used was k-means clustering, and the supervised methodology used a random forest algorithm. The two methods produced broadly similar results; however, the supervised methodology outperformed the unsupervised methodology. The results of the …
A Cost Benefit Analysis Of Using A Battery Energy Storage System (Bess) Represented By A Unit Commitment Model, Nemanja Mihailovic
A Cost Benefit Analysis Of Using A Battery Energy Storage System (Bess) Represented By A Unit Commitment Model, Nemanja Mihailovic
USF Tampa Graduate Theses and Dissertations
This thesis aims to provide a general overview of a cost and benefit analysis of incorporating a battery energy storage system within unit commitment model.
The deregulation of the electricity market in the U.S. has only been around for the last two decades. With renewable energy and energy storage systems becoming less expensive, a decentralized market scheme is becoming more popular and plausible. The scope of this work is to provide a fundamental understanding of unit commitment and a cost analysis of applying a battery energy storage system to an already established power system.
A battery energy storage system (BESS) …
An Investigation Into The Imposed Cognitive Load Of Static & Dynamic Type Systems On Programmers, Ian Vaughn Koeppe
An Investigation Into The Imposed Cognitive Load Of Static & Dynamic Type Systems On Programmers, Ian Vaughn Koeppe
Student Work
Static and dynamic type systems have long been a point of contention in the programming language wars. Yet, for many years, arguments on either side were drawn from personal experience and not empirical evidence. A challenge for researchers is that the usability of language constructs is difficult to quantify, especially since usability can be interpreted in many ways. By one definition, language usability can be measured in terms of the level of cognitive load imposed on a developer. This can be done through questionnaires, but ultimately user responses are subject to bias. In recent years, eye-tracking has been shown to …
Predicting User Interaction On Social Media Using Machine Learning, Chad Crowe
Predicting User Interaction On Social Media Using Machine Learning, Chad Crowe
Student Work
Analysis of Facebook posts provides helpful information for users on social media. Current papers about user engagement on social media explore methods for predicting user engagement. These analyses of Facebook posts have included text and image analysis. Yet, the studies have not incorporate both text and image data. This research explores the usefulness of incorporating image and text data to predict user engagement. The study incorporates five types of machine learning models: text-based Neural Networks (NN), image-based Convolutional Neural Networks (CNN), Word2Vec, decision trees, and a combination of text-based NN and image-based CNN. The models are unique in their use …
Zhvillimi I Sistemit Për Menaxhimin E Burimeve Njerzore Duke Përdoruar Ruby On Rails, Albane Dulaj
Zhvillimi I Sistemit Për Menaxhimin E Burimeve Njerzore Duke Përdoruar Ruby On Rails, Albane Dulaj
Theses and Dissertations
Menaxhimi i burimeve njerzore është sfidë për çdo kompani e në veçanti për kompanit e mesme ose të medha në mungesë të sistemeve të cilat ndihmojn në menaxhim. Implementimi i sistemeve të cilat ndodhen në treg është shumë i kushtushëm, e për ta komplikuar situaten mirëmbajtja është edhe më e kushtushme në aspektin financiar, teknik dhe njerzor.
Duke analizuar sisteme të ngjashme kemi kuptuar që shumica e kompanive të mëdha të cilat kanë implementuar këto lloj sistemesh, kan pasur përfitime të shumta në të njejtën kohë edhe shpenzime të shumta e në veçanti ne aspektin material.
Në këtë punim është …
Soil-Plant Interface, Carbon Sequestration And The Eco Physiological Growth Of Salsola Imbricata And Zygophyllum Mandaville Using Locally Grown Rhizosphere And Endophytic Bacteria, Nour Elhouda Debouza
Soil-Plant Interface, Carbon Sequestration And The Eco Physiological Growth Of Salsola Imbricata And Zygophyllum Mandaville Using Locally Grown Rhizosphere And Endophytic Bacteria, Nour Elhouda Debouza
Civil and Environmental Theses
Salsola imbricata and Zygophyllum Mandeville are halophytic plants available widely in the UAE. These two species have important environmental services such as sand dune fixation, which will potentially improve plant cover and help tackle the problem of desertification. The species were selected due to their availability and role in the desert environment of the UAE. Plants are also constantly involved in interactions with a wide range of bacteria in the soil. These plant-associated bacteria colonize the rhizosphere (rhizobacteria), and the internal plant tissues (bacterial endophytes). Endophytic bacteria are those capable of colonizing live internal plant tissues which can be isolated …
Disappearance Of Phragmites In Louisiana And Nipponaclerda Biwakoensis, Rachel Tugger
Disappearance Of Phragmites In Louisiana And Nipponaclerda Biwakoensis, Rachel Tugger
Honors Theses
No abstract provided.
Sequestration Effect On The Open-Cyclic Switchable Property Of Warfarin Induce By Cyclodextrin: Time-Resolved Fluorescence Study., Naji Saleh Ahmed Al-Dubaili.
Sequestration Effect On The Open-Cyclic Switchable Property Of Warfarin Induce By Cyclodextrin: Time-Resolved Fluorescence Study., Naji Saleh Ahmed Al-Dubaili.
Chemistry Theses
In this work, the photophysical properties of the fluorescent anticoagulant drug warfarin (W) were examined in water and inside methyl- β-cyclodextrins (Me- β-CD) through absorption and time-resolved fluorescence measurements at pH 3 and 9 and upon the selective excitation of different isomers of warfarin at 280 and 320 nm. The values of binding constants (2.9 x 103 M-1 and 4.2 x 102 M-1 for protonated and deprotonated forms, respectively) were extracted from the spectrophotometric data. Both absorption and time-resolved fluorescence results established that the interior of the macromolecular host binds preferentially the open pronated form, redshifts …
Development, Characterization And Application Of Multi-Detector Flow Injection Systems Based On A Serial Flow Configuration For Simultaneous Multianalyte Determination, Aisha Rashed Al Hameidi Yammahi
Development, Characterization And Application Of Multi-Detector Flow Injection Systems Based On A Serial Flow Configuration For Simultaneous Multianalyte Determination, Aisha Rashed Al Hameidi Yammahi
Chemistry Theses
Oxidase enzymes have been used successfully in the analysis of several biochemical species such as glucose, lactate, pyruvate, creatine, creatinine, amino acids, cholesterol and sialic acid, by generating - in a single or consecutive reaction -hydrogen peroxide (H₂O₂) as a signal molecule which is commonly detected amperometrically. Some approaches have been also reported to use more than one enzyme in a given system to achieve multi-analyte determination. This study aims to evaluate a novel approach for n-analyte determination based on n-enzyme reactors (each is loaded with one or more oxidase enzyme) as well as n-1 catalase immobilized …
Development And Characterization Of A Portable Apparatus For Continuous Measurement Of Hydrogen Sulfide In Gas Streams, Bashar Yousef Abu Hattab
Development And Characterization Of A Portable Apparatus For Continuous Measurement Of Hydrogen Sulfide In Gas Streams, Bashar Yousef Abu Hattab
Chemistry Theses
A novel detection scheme for the hydrogen sulfide (H₂S) was described and patented recently by researchers at UAE University. This detection scheme and the described bench-scale analyzer offered the advantage of low-cost solution for real-time monitoring of percentile levels of H₂S with excellent signal stability. However, this previous work suffered from two major limitations, which are the relatively low sensitivity and slow response time, which mainly hindered its commercial utilization. Therefore, the aims of the present work were to enhance the detection sensitivity, decrease the response time, and develop a portable prototype of the H₂S analyzer based on the improved …
Feeding Behaviour Of The Reef Heron (Egretta Gularis Schistacea), Ahmed Abdalla Yousif Al-Ali
Feeding Behaviour Of The Reef Heron (Egretta Gularis Schistacea), Ahmed Abdalla Yousif Al-Ali
Biology Theses
Western Reef Heron (Egretta egularis) is a very common coastal resident bird species in the Arabian Gulf. In UAE, the subspecies “schistacea” also known as Indian Reef Heron occurs in mangroves inlets and other coastal and inland water bodies along the southern and eastern coast of the country. The present study aims to investigate the bird’s food, feeding behavior, morphs and its relationship with the habitat in Al-Zora Protected Area (Ajman - UAE) by establishing a feeding behavior ethogram and monitor its feeding frequency and its correlation with biotic and abiotic features of the study site. …
Gender Differences In Identity-Based Social Influence: An Experimental Examination Of Software Piracy Behavior, Noura Eisa Jaber Al Khyeli
Gender Differences In Identity-Based Social Influence: An Experimental Examination Of Software Piracy Behavior, Noura Eisa Jaber Al Khyeli
Information Security Theses
Software piracy is the unauthorized copying, sharing, or using the software. It can be a profitable endeavor for individuals and a tremendous loss for the industry. According to Gulf News, Software piracy losses in the Arabian Gulf states in 2015 was 897$ million (AED 3.29 billion). Therefore, it is critical to understand as much as possible about the phenomenon and investigate the factors that influence subjects’ piracy behavior. Driven by gaps in previously published literature, the study presented here is an experimental investigation into the gender differences in identity-based social influence. In essence, the study examined if males or females …
Development Of Hydroxyapatite-Polymer Sorbents For The Removal Of Heavy Metal Ions From Waste Waters, Eleanora Charnetskaya
Development Of Hydroxyapatite-Polymer Sorbents For The Removal Of Heavy Metal Ions From Waste Waters, Eleanora Charnetskaya
Chemistry Theses
Water pollution due to the presence of soluble metal ions is one of the greatest challenges to environmental scientists. Different methods have been explored to the removal of these soluble ions. Among these methods, elimination by sorption into/onto solid materials has been considered one of the successful approaches. Sorbent materials usually chemically interact with soluble ions and eliminate them by bond formation between the ions and the sorbent molecules. On the other hand, soluble ions can be also exchanged with inorganic sorbents in which other environmentally friendly ions can exchange with the soluble metal ions. In the current study, the …
Assessment Of Groundwater Quality In The Al Khatim And Remah Area Of The United Arab Emirates, Qasim Raza Khan
Assessment Of Groundwater Quality In The Al Khatim And Remah Area Of The United Arab Emirates, Qasim Raza Khan
Civil and Environmental Theses
Groundwater constitutes an important part of the available water resources in arid areas. Knowledge of the quantitative and qualitative status of groundwater is a key aspect in optimal groundwater management. The chemical characteristics of groundwater in two neighboring areas (Remah and Al Khatim) have been used to identify the processes controlling groundwater chemistry in the sand aquifer of Abu Dhabi Emirate, United Arab Emirates. Furthermore, the suitability of the groundwater for agricultural purposes was assessed using a range of indices. Both areas showed elevated levels of nitrate, potassium and cadmium, indicating the impact of agricultural activities. The groundwater was found …
Writing And Designing A Chapter On Mercury And Pluto For The Textbook Exploring The Planets (Explanet.Info), Braxton Clark Spilker
Writing And Designing A Chapter On Mercury And Pluto For The Textbook Exploring The Planets (Explanet.Info), Braxton Clark Spilker
Theses and Dissertations
Exploring the Planets (http://explanet.info) is a free online college textbook covering thebasic concepts of planetary science emphasizing the character and evolution of the planetarybodies in the Solar System. The latest edition (3rd edition) was published online in 2007 by EricH Christiansen. Since the release of the third edition, two important planetary missions havebeen completed: MESSENGER (to Mercury) and New Horizons (to Pluto). These missionsprovided new information and fundamental insights into these planetary bodies, which have notyet been included in Exploring the Planets. The modern results based on recent investigations ofMercury and Pluto are critical for our understanding of the nature …
Clean Indices Of Common Rings, Benjamin L. Schoonmaker
Clean Indices Of Common Rings, Benjamin L. Schoonmaker
Theses and Dissertations
Lee and Zhou introduced the clean index of rings in 2004. Motivated by this work, Basnet and Bhattacharyya introduced both the weak clean index of rings and the nil clean index of rings and Cimpean and Danchev introduced the weakly nil clean index of rings. In this work, we calculate each of these indices for the rings ℤ/nℤ and matrix rings with entries in ℤ/nℤ. A generalized index is also introduced.