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Search Results: 1 - 10 of 27376 matches for " Robert Bestak "
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Random Cell Identifiers Assignment
Robert Bestak,Valentin Helou
Advances in Electrical and Electronic Engineering , 2012,
Abstract: Despite integration of advanced functions that enable Femto Access Points (FAPs) to be deployed in a plug-and-play manner, the femtocell concept still cause several opened issues to be resolved. One of them represents an assignment of Physical Cell Identifiers (PCIs) to FAPs. This paper analyses a random based assignment algorithm in LTE systems operating in diverse femtocell scenarios. The performance of the algorithm is evaluated by comparing the number of confusions for various femtocell densities, PCI ranges and knowledge of vicinity. Simulation results show that better knowledge of vicinity can significantly reduce the number of confusions events.
Introduction to a Requirements Engineering Framework for Aeronautics  [PDF]
Robert Abo
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.39105
Abstract: This paper introduces a framework to produce and to manage quality requirements of embedded aeronautical systems, called the ‘Requirements Engineering Framework’ (REF). It aims at making the management of the requirement lifecycle easier, from the specification of the purchaser’s needs, to their implementation in the final products, and also their verification, while controlling costs. REF is based on the main standards of aeronautics, in particular RTCA DO-254, and RTCA DO-178B standards. An implementation of REF, using the IBM Rational DOORS and IBM Rational Change tools, is also presented in this paper.
Pricing Options in Jump Diffusion Models Using Mellin Transforms  [PDF]
Robert Frontczak
Journal of Mathematical Finance (JMF) , 2013, DOI: 10.4236/jmf.2013.33037

This paper is concerned with the valuation of options in jump diffusion models. The partial integro-differential equation (PIDE) inherent in the pricing problem is solved by using the Mellin integral transform. The solution is a single integral expression independent of the distribution of the jump size. We also derive analytical expressions for the Greeks. The results are implemented and compared to other approaches.

Australia’s Out-Dated Concern over Fishing Threatens Wise Marine Conservation and Ecologically Sustainable Seafood Supply  [PDF]
Robert Kearney
Open Journal of Marine Science (OJMS) , 2013, DOI: 10.4236/ojms.2013.32006

Seafood plays an important role in human nutrition and its increased consumption is actively recommended for sustenance and health benefits in both developing and developed countries. In parallel to this, the public receives confusing advice as to what seafood is sustainably produced and is frequently misled about the environmental impacts of fishing, especially in locations such as Australia where contemporary fishery management has a conservation and sustainability focus. It is recognised globally that Australia’s traditional fishery management driven by strict sustainability and biodiversity regulations, has achieved impressive results in managing both fish stocks and the effects of fishing on marine environments. Despite this, continued pressure from non-government organisations (NGOs) and a perpetuation of the misuse of management terms such as overfished is used to promote the misguided need for ever increasing fishing restrictions, most obviously in protected areas. This paper questions the motives of some NGOs and governments in Australia in pursuing additional restrictions on fishing which are mostly unnecessary and disproportionate to the sustainability requirements of other sources of food. This is done within the context of the global need for sustainable seafood supply and the need for effective marine conservation that addresses all threats to marine ecosystems in proportion to the magnitude of each threat.

Wearable and wireless accelerometer systems for monitoring Parkinson’s disease patients—A perspective review  [PDF]
Robert LeMoyne
Advances in Parkinson's Disease (APD) , 2013, DOI: 10.4236/apd.2013.24021
Abstract: Parkinson’s disease is a growing medical concern as societies, such as the United States of America, become progressively aged. Therapy strategies exist for the amelioration of Parkinson’s disease symptoms, and the quantification of attributes, such as hand tremor, can provide valuable feedback. Wearable and wireless accelerometer systems for monitoring Parkinson’s disease patients have been progressively advanced over the course of the past half-decade. In particular, wireless accelerometer nodes and smartphones, such as the iPhone, hold promise for optimizing therapy strategy by providing convenient quantified feedback. This perspective review addresses the current advances in wearable and wireless accelerometer systems for monitoring Parkinson’s disease patients and forecasts for the near future.
A Study of Lateralized Cognitive Processes in Upper-Division Electrical Engineering Students’: Correlating Written Language Functions with Analytical Reasoning in Microelectronics  [PDF]
Robert Melendy
World Journal of Engineering and Technology (WJET) , 2014, DOI: 10.4236/wjet.2014.22008
Abstract: The human brain is asymmetrical in function, with each of its two hemispheres being somewhat responsible for distinct cognitive and motor tasks, to include writing. It stands to reason that engineering students who have established entrance into their upper-division programs will have demonstrated cognitive proficiency in math and logical operations, abstract and analytical reasoning and language usage, to include writing. In this study the question was asked: is there a correlation between an upper-division electrical engineering students’ analytical reasoning ability and their descriptive writing ability? Descriptive writing is taken here to mean a students’ ability to identify key physical aspects of a mathematical model and to express—in words—a concise and well-balanced description that demonstrates a deep conceptual understanding of the model. This includes more than a description of the variables or the particular application to an engineering problem; it includes a demonstrated recognition of the basic physics that govern the model, certain limitations (idealizations) inherent in the model, and an understanding of how to make practical experimental measurements to verify the governing physics in the model. A student at this level may demonstrate proficiency in their analytical reasoning skills and hence be capable of correctly solving a given problem. However, this does not guarantee that the same student is skilled in associating equations with their physical meaning on a deep conceptual level or in understanding physical limitations of the equation. Consequently, such a student may demonstrate difficulty in mapping their comprehension of the model into written language that demonstrates a sound conceptual understanding of the governing physics. The findings represent a sample of two independent class sections of Electrical and Computer Engineering junior’s first course in Microe-lectronic Devices and Circuits during fall semesters 2012 and 2013 at a private mid-size university in NW Oregon. A total of three exams were administered to each of the 2012/2013 groups. Correlations between exam scores that students achieved on their descriptive writing of microelectronics phenomena and their analytical problem-solving abilities were examined and found to be quite significant.
Foilized pouches can prevent the transmission of HIV from mother to child using multi-drug therapies  [PDF]
Robert Malkin
Journal of Biomedical Science and Engineering (JBiSE) , 2014, DOI: 10.4236/jbise.2014.71007
Abstract: Children can become HIV positive (HIV+) from their mother during home birth. If the infant ingests antiretroviral (ARV), medications immediately after birth, the risk of transmission can be dramatically reduced. We have previously proposed the use of foilized, polyethylene-lined pouches to store ARV’s. Using the pouch, the mother receives the medication at an antenatal care visit, months before delivery, and if she delivers at home, tears open the pouch and drips the medication into her child’s mouth. In this work, we extend the use of the pouch to store a modern ARV, Lamivudine (3TC), often used in multi-drug regimens. Under laboratory conditions, pouches were filled with 3TC and stored at 25?C/60% relative humidity (RH) for twelve months. We found that the 3TC was stable throughout the year (maximum 5.6% of labeled concentration change). The preservatives were somewhat degraded by the act of repackaging the medicine, but sufficient preservatives remained to maintain the medication. The same impurities were identified in the 3TC stored in the pouches and the samples removed from the bottles indicating that the pouches do not introduce new impurities (impurities that are not already introduced by the bottle). We conclude that the pouch can preserve this modern ARV for up to twelve months.
Valuation of Mineral Resources in Selected Financial and Accounting Systems  [PDF]
Robert Uberman
Natural Resources (NR) , 2014, DOI: 10.4236/nr.2014.59045
The paper presents reviews of fundamental issues regarding valuation methodologies of mineral deposits: 1) recommended by mineral industry standards; 2) used for disclosures in financial statements and 3) adopted in national statistics. A discussion of historical developments of various regulations is supplemented by characteristics of key valuation methods. Differences and similarities are analysed and compared to current practices. A special attention is given to certain distinctive issues which are not shared by most of other types of assets like inclusion of decommissioning and rehabilitation costs or consequences of long duration of investment phase.
Hernia Societies—A Blessing or a Curse? Who Is Running Them? Ethical Surgeons or the Industry  [PDF]
Robert Bendavid
International Journal of Clinical Medicine (IJCM) , 2014, DOI: 10.4236/ijcm.2014.513103

The intended purpose of hernia societies is being lost. Originally, they were meant to be a venue for the dissemination of basic science, knowledge and sharing of acquired research, experiences by surgeons with the ultimate aim of improving a patient’s lot. Instead, they have become venues and brokerage houses where the plastics industry may advertise and sell products which have barely been tested or about which the truth was never entirely revealed. An FDA approval, sadly, is not assurance that all is well. We are discovering these facts through the courts and the lay press. We, as surgeons, are not told the whole truth to impart to patients who expect nothing less! Have any of us been complicit, knowingly or not?


A Proposed Exercise to Reinforce Abstract Thinking for Upper-Division Computer and Electrical Engineering Students: Modeling a High-Speed Inverter Using Cognitive Representations and Abstract Algebra  [PDF]
Robert Melendy
World Journal of Engineering and Technology (WJET) , 2014, DOI: 10.4236/wjet.2014.24031
Abstract: In mathematics, physics, and engineering, abstract concepts are an indispensable foundation for the study and comprehension of concrete models. As concepts within these fields become increasingly detached from physical entities and more associated with mental events, thinking shifts from analytical to conceptual-abstract. Fundamental topics taken from the abstract algebra (aka: modern algebra) are unquestionably abstract. Historically, fundamental concepts taught from the abstract algebra are detached from physical reality with one exception: Boolean operations. Even so, many abstract algebra texts present Boolean operations from a purely mathematical operator perspective that is detached from physical entities. Some texts on the abstract algebra introduce logic gate circuits, but treat them as perceptual symbols. For majors of pure or applied mathematics, detachments from physical entities is not relevant. For students of Computer and Electrical Engineering (CpE/EE), mental associations of Boolean operations are essential, and one might argue that studying pure Boolean axioms are unnecessary mental abstractions. But by its nature, the CpE/EE field tends to be more mentally abstract than the other engineering disciplines. The depth of the mathematical abstractions that we teach to upper-division CpE/EE majors is certainly up for questioning.
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