Miracle-dz/UniFAR-FTUs huggingface dataset:
Scour and scour protection around offshore gravity based foundations

The prediction of seabed scour around offshore gravity based foundations with complex geometries is currently a significant barrier to optimising and providing cost effective foundation designs. A significant aspect that has the potential to reduce the uncertainty and costs related to the design of these foundations is the understanding of the effect the structural geometry of the foundation has on scour. This thesis focuses on an experimental investigation of the scour and scour protection around complex structure geometries. The first part of this research considers scour under clear water conditions. During this study different foundation geometries were subjected to a range of different hydrodynamic forcings which enabled a better understanding of the scour process for these foundations. The second part of the research encompasses the design and execution of a series of experiments which investigated stability of the scour protection around such structures. The structures were tested against different combinations of wave and current conditions to determine the bed shear stress required to initiate sediment motion around each structure. This research has led to a number of novel results. The experimental investigation on scour around complex geometries showed that the scour depth around cylindrical structures (with both uniform and complex cross-sections) is linked to the depth averaged pressure gradient. Following a dimensional analysis, the controlling parameters were found to be the depth averaged Euler number, pile Reynolds number, Froude number, sediment mobility number and the non-dimensional flow depth. Based on this finding a new scour prediction equation was developed which shows good agreement with experimental and prototype scour measurements. The scour protection tests indicated that under wave dominated conditions the amplification of the bed shear stress around these structures does not exceed the value of 2. In the case of current dominated flow conditions the amplification of the bed shear stress is a function of the structure type and the Keulegan–Carpenter number. The results of these experiments were used to develop a “Shields type” diagram that can guide designers to select the appropriate rock armour size that will be stable for a certain set of flow conditions. The study also revealed that the long term persistence of flow conditions that just lead to incipient motion of the scour protection material can eventually lead to complete failure of the scour protection. The study provides a set of new design techniques that can allow designers to predict the scour depth around cylindrical and complex foundation geometries and also select the appropriate stone size for their scour protection system. Together, these techniques may allow for the reduction of costs associated with the scour protection of offshore and coastal structures.
Pencapaian Lebar-Pita Antena Mikrostrip dengan Tingkap Tergandeng untuk Frekuensi 2,4 GHz

Aperture coupled technique is designed to increase microstrip antenna bandwidth. This paper discusses bandwidth enhancement of the aperture coupled rectangular patch microstrip antenna for working on 2.4 GHz. The optimal design is determined by using the AWR simulator. The fabricated antenna is then analyzed using a vector network analyzer (Anritsu MS2034B). The results show that the antenna is able to achieve 110 MHz bandwidth with return loss is less than –9.54 dB. The bandwidth increment is approximately 77.13% higher than the directly fed antenna.
Multi-Dimensional Range Search in Unstructured Peer-to-Peer Systems

It is an important problem to efficiently support similarity search for multi-dimensional data spaces in peer-to-peer (P2P) data management environment. Current unstructured P2P data sharing systems provide only a very rudimentary facility in query processing, i.e., matching-based query processing. This paper therefore presents a simple, yet effective index structure called EVARI (extended vector approximation routing index) to address the problem of multi-dimensional range search in unstructured P2P systems, by means of both data approximation and routing index techniques. With the aid of the EVARI, each peer can not only process range queries with its local dataset, but also route queries to promising peers with the desired data objects. In the proposed scheme, each peer summarizes its local content using space-partitioning technique, and exchanges the summarized information with neighboring peers to construct the EVARI. Furthermore, each peer can reconfigure its neighboring peers to keep the relevant peers nearby so as to optimize system resource configuration and improve system performance. Extensive experiments show the good performance of the proposed approach.
Kinematics-based parameter-varying observer design for sideslip angle estimation

This paper presents a novel design of kinematics-based observer for vehicle sideslip angle estimation. A parameter-varying model is firstly obtained by regarding the measured yaw rate as a varying parameter. A yaw rate scheduled parameter-varying observer is then constructed using the measured yaw rate and accelerations, and is designed to be robust against the measurement noises. The conditions for designing such an observer are derived in terms of linear matrix inequalities (LMIs). Numerical simulations on a nonlinear 8-DOF vehicle dynamics model and experimental data are used to validate the effectiveness of the proposed approach. The results show that the designed observer can effectively estimate the vehicle sideslip angle regardless of the measurements with noises.
Active Queue Management and Scheduling Methods for Packet-Switched Networks

AKIN, OZDEMIR. Active Queue Management and Scheduling Methods for Packet-Switched Networks (under the supervision of Dr. J. Keith Townsend) To support the myriad of envisioned communication products of the future, there is a need to develop a network infrastructure that can provide larger bandwidth, with better control of quality of service (QoS). However, with increasing demand for applications running over packet networks, congestion at the intermediate nodes (e.g., routers and switches) can be a serious problem. Consequences include long delays, large delay variation and high packet loss rates. Different solutions requiring varying levels of modification to the currently used algorithms have been proposed both for responsive (e.g., TCP) and unresponsive (e.g., UDP) protocols. However, most of the solutions are either too complicated to implement in real life or not general enough to be applicable to an arbitrary network topology. In this thesis, we investigate two mechanisms — active queue management (AQM), and scheduling — that can improve QoS in the packet networks. AQM techniques attempt to prevent congestion and regulate the queue length by sending congestion signals (i.e., dropping and/or marking packets) in a proactive manner, which would eventually cause the senders to decrease their sending rates. We use an analytic model derived for TCP in the literature to develop an AQM scheme that not only controls the queue length at the intermediate nodes but also distributes the resources fairly between the users. We present two different schemes that have different levels of complexity and performance. We also propose a distributed networking scheme that improves the performance of our new AQM algorithms. Although AQM schemes work well with responsive protocols such as TCP, the performance degrades for unresponsive protocols since unresponsive protocols do not change their packet sending rate in response to the congestion notifications sent by the network. Scheduling algorithms can regulate both responsive and unresponsive flows and can also provide guarantees on some QoS parameters, such as latency and fairness. We propose a new scheduling algorithm that can guarantee a better latency and fairness bound than the previous schemes with a similar complexity. This new scheme uses different queues for each round to simplify the common sorting problem with the scheduling schemes. Also a new notion, virtual round, is used to time-stamp incoming packets. Active Queue Management and Scheduling Methods for Packet-Switched Networks
A Subannual Subsurface Pathway From the Gulf Stream to the Subpolar Gyre and Its Role in Warming and Salinification in the 1990s

The transport of warm, saline subtropical water to the subpolar gyre (SPG) in the North Atlantic has been the subject of a range of Lagrangian studies, establishing intergyre exchange on timescales of 2–7 years, with greater subsurface throughflow. Here calculating particle trajectories in a high‐resolution, global hindcast, we present new evidence for a direct, subsurface pathway to the SPG from the Gulf Stream (GS) on subannual timescales. The pathway is most evident for particles initially at 200‐m depth in the GS and is enhanced after a prolonged period of positive North Atlantic Oscillation. This occurred in the mid‐1990s and led to warming and salinification of the western SPG consistent with observations. The more realistic advective pathways and timescales in the high‐resolution model enable, for the first time, attribution of temperature and salinity changes in the SPG to a direct influx of GS water.
A Distributed Recommendation Platform for Big Data

The vast amount of information that recommenders manage these days has reached a point where scalability has become a critical factor. In this work, we propose a scalable architecture designed for computing Collaborative Filtering recommendations in a Big Data scenario. In order to build a highly scalable and fault-tolerant platform, we employ fully distributed systems without any single point of failure. We study the use of data replication and data distribution technologies. Additionally, we consider different caching techniques. Taking into account these requirements, we propose particular technologies for each component of the platform. Next, we evaluate the response times of storing, generating and serving recommendations using MySQL Cluster and Cassandra showing that the latter technology is much more adequate for that purpose. Finally, we conduct a simulation for evaluating the impact of a memory caching system.
Attribute-based Access Control Model for Web Services

Traditional access control models are not well-suited for the services-oriented environments because they are mostly static and coarsely grained.An Attribute-based access control(ABAC) model is proposed based on SAML and XACML,which adopted the authorization mechanism dynamically and fine-grained based on subject,resource and environment attributes.The new model is more flexible,which is especially suitable for the dynamic,ad-hoc environment for Web services.
A Review on Pathogenic Diseases on Corals Associated Risk Factors and Possible Devastation in Future in the Globe

Coral reefs being highly diverse to marine ecology, yet most of the mystery remain unsolved. Coral reefs are of ecological as well as economic importance. Corals support commercial and subsistence fisheries, tourism, and are of medicinal value. It also creates a barrier against storms, flooding, and erosion by reducing wave action. Further, Corals support the existence of nearly 4,000 species of fish, 800 species of hard corals reef and other oceanic species. They also act as carbon sinkers. Coral polyps take up dissolved CO2 in the water to make their calcareous exoskeleton allowing atmospheric CO2 levels to be reduced. People around the world depend on the coral reefs as it’s used as food, protection, provides employment and attracts tourism. They are attractive sites for recreational activities such as snorkeling and scuba diving. Furthermore, the coral reef ecosystem could represent increasingly significant sources for medical treatments, nutritional supplements, pesticides, cosmetics and other commercial products. Therefore, needs best strategies to improve to protect coral reef.
Organizational Evolution New Directions

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ANALYSIS OF THE EXPERIENCE OF USING A PEDAGOGIC CONVERSATIONAL AGENT FOR READING COMPREHENSION IN THE SCHOOL

Technologies are key in society, and they are in continuous progress. In the educational context, an increase of using new technologies for education can be identified in the last years. One of these new technologies is Pedagogic Conversational Agents. That is, computer systems that interact with the students in spoken or written natural language. They can adopt the role of teacher, student or pal. In the 2011/2012 academic year, we used a Pedagogic Conversational Agent called Dr. Roland in class to solve Maths problems. 38 students and 3 teachers were involved in the experience. In this paper, an analysis of the experience and how to integrate agents in the school is presented. Ten recommendations as a guide for teachers, researchers and developers interested in using this type of educational software are proposed from the analysis. Some of these recommendations are to combine the use of computers with other devices such as tablets that make the use of the system by several students easier, to involve the parents to foster the use of the agent at home, and to validate each step of the advances made with teachers, parents and students so that they are adapted to their needs.
Selenium 2 Testing Tools: Beginner's Guide

Learn to use Selenium testing tools from scratch Automate web browsers with Selenium WebDriver to test web applications Set up Java Environment for using Selenium WebDriver Learn good design patterns for testing web applications In Detail Selenium automates browsers. It is primarily used for automating web applications for testing purposes. Selenium has the support of some of the largest browser vendors who have taken (or are taking) steps to make Selenium a native part of their browser. It is also the core technology in countless other browser automation tools, APIs and frameworks. Selenium 2 Testing Tools: Beginners Guide" will help you begin with testing web applications using Selenium from scratch. From setting up the Java environment to running tests on mobile devices, it contains all the information to get a novice up and running on using Selenium. You will also learn some advanced concepts such as testing complex web applications and running tests in parallel towards the end of the book. This book is your answer to getting started with Selenium. This is a good technical book that walks readers through how to break down a web application to being confident to automate your favorite web application. You start with installing Selenium and the basics, and then move on to using Selenium IDE for bug replication. An overview of the WebDriver is presented next followed by migrating your tests from Selenium RC to Selenium WebDriver. You will then learn to find elements on a webpage from both the driver object as well as the element object and work with the Firefox driver. You will scan through mobile support and Selenium Grid. Design patterns and advanced topics are also covered. By the end of the book, you will feel extremely confident with tackling websites on a number of different platforms. What will you learn from this book Learn the basics of breaking down a web application for testing Understand AJAX calls and how they work with your tests Create basic scripts that allow you to recreate issues quickly Set up Firefox Driver, Firefox profiles, and extensions Get your tests working on mobile devices Migrate your tests from Selenium RC to Selenium WebDriver Handle tests quicker by running them in parallel and reduce build time Approach This book is written in Beginner's Guide style which emphasizes the concept of learning by doing. The book is packed with examples and code so that you can get the best out of this book. Who this book is written for If you are a Software Quality Assurance professional, Software Project Manager, or a Software Developer interested in automated testing using Selenium, this book is for you. Web-based application developers will also benefit from this book.
Hidden Holocene Slip Along the Coastal El Yolki Fault in Central Chile and Its Possible Link With Megathrust Earthquakes

Megathrust earthquakes are commonly accompanied by increased upper‐plate seismicity and occasionally triggered fault slip. In Chile, crustal faults slipped during and after the 2010 Maule (M8.8) earthquake. We studied the El Yolki fault (EYOF), a transtensional structure midways the Maule rupture not triggered in 2010. We mapped a Holocene coastal plain using light detection and ranging, which did not reveal surface ruptures. However, the inner‐edge and shoreline angles along the coastal plain as well as 4.3‐ to 4.0‐ka intertidal sediments are back‐tilted on the EYOF footwall block, documenting 10 m of vertical displacement. These deformed markers imply ~2‐mm/year throw rate, and dislocation models a slip rate of 5.6 mm/year for the EYOF. In a 5‐m‐deep trench, the Holocene intertidal sediments onlap to five erosive steps, interpreted as staircase wave‐cut landforms formed by discrete events of relative sea level drop. We tentatively associated these steps with coseismic uplift during EYOF earthquakes between 4.3 and 4.0 ka. The Maule earthquake rupture may be subdivided into three subsegments based on coseismic slip and gravity anomalies. Coulomb stress transfer models predict neutral stress changes at the EYOF during the Maule earthquake but positive changes for a synthetic slip distribution at the central subsegment. If EYOF earthquakes were triggered by megathrust events, their slip distribution was probably focused in the central subsegment. Our study highlights the millennial variability of crustal faulting and the megathrust earthquake cycle in Chile, with global implications for assessing the hazards posed by hidden but potentially seismogenic coastal faults along subduction zones.
Evidence of an indirect rebound effect with air-to-air heat pump: to have and not to use ?

Regional energy efficiency programmes are of particular interest as they tackle local constraints which are not always targeted by national energy policy. In this frame, an energy efficiency programme for existing dwellings has been implemented in a southern European region, providing financial incentives for a combination of energy efficiency actions (reversible air-to-air heat pump combined with insulation and/or solar hot water). Ex-post evaluation results of this pilot programme are reported here. More than 200 households were surveyed regarding their individual energy consumption and building as well as household characteristics. Likewise, the survey highlights household behaviours concerning both space heating and air conditioning, before and after refurbishment. A three years billing analysis is used to calculate the energy savings attributed to the operation. Evaluations are carried out taking into account critical parameter like climate differences between years or direct (enhanced space heating comfort) and indirect (use of air conditioning) rebound effect via a statistical model. Moreover, an uncertainty assessment of energy savings was realized on the basis of three scenarios (low, median and high). Particularly, this study points out the use of air conditioning by households, data rarely found in the literature, whereas this end-use should increase in the residential sector especially in southern regions. These results contribute answering questions about installation of air-to-air heat pump in existing buildings: energy savings and direct rebound effect as well as indirect rebound effect and household motivation for implementing energy efficiency actions.
Vulnerability of Roma Children in the Municipality of Shuto Orizari

The study is mainly directed towards analysis of the vulnerability of Roma children in the municipality of Shuto Orizari (Skopje), where 6.936 Roma children live or 49,64% of the total Roma population. Majority of children is in school age 54,42% (3.775) of whom 37,95% (2.632) is primary school pupils. According to the statistical information in 1996 Roma job seekers participated with 4,7% in the total number of job seekers in the Republic of Macedonia. The majority of the population in Shuto Orizari lives with the social benefits in cash or permanent financial assistance in cash granted by the state and they are not yet engaged in any voluntary working activities by which they could contribute to the betterment of the living or ecological and communal conditions in the municipality. In the search for financial means some parents engage their children (2,44% or 62 children) in different forms of low paid jobs (trade on the black market, work abuse). Considering the fact that this data were obtained by the statements of the parents, and although the surveyors were all well familiarised with the situation in field, we still believe that the number of these children is much bigger than presented. About 2,47% (77) children are forced to beg. The number of abused and neglected Roma children is a warning sign that efforts must be made by the state or non-governmental organisations for opening daycare centres as well as other forms directed towards stamping out of this negative tendency. The Centres could also offer its services to the drug or alcohol-addicted children or delinquents living on the territory of the municipality. About 1,77% (123 children) are placed under some forms of child protection guardianship. We find foster family care the most appropriate form for children without parents and parental care and therefore recommend that strong support should be given to its further development. For those grandparents who look after their grandchildren alone, organised advisory services and assistance should be at hand. Taking into account that there are 86 children with mental disabilities in the municipality and that only 3% of them attend special school, all existing factors
Analysis on social influence and public awareness of Republic of Korea on creative education using opinion mining techniques

Creative education has become a global issue in recent years, and on that basis, the fostering of creative individuals and software education are developing immensely. The case of South Korea is setting a foundation in their direction of policies via the creative economy by adopting the free semester policy and STEAM education in line with the trend of the global market. However, despite the country's incessant efforts for the past five years, scales and solutions through which their performance levels can be verified are not being suggested. Therefore, this thesis had conducted an opinion mining analysis with South Korean online media as target by using semi-structured data for obtaining a quantitative scale and verification, while excluding the existing methods of analysis via checklists and questionnaires. The directivity of educational policies which South Korea is not obliged but has the option to pursue has been suggested through the analyzation of social impacts and public awareness on creative education currently being enforced via the opinion mining analysis.