...Network Performance Project Benchmarking of Wireless Routers Pedro Bustamante Noopur Chowdhary School of Information Science University of Pittsburgh Pittsburgh, United States pjb63@pitt.edu School of Information Science University of Pittsburgh Pittsburgh, United States noc13@pitt.edu Abstract— This paper explores a basic technique for Network Performance Analysis: Compare alternate equipment based on real measurements. Further, this work describes the comparison between two wireless routers configured as access points. The analysis of the equipment was implemented in terms of throughput (TCP) and jitter (UDP). In this way, this work aims to show the results of the benchmarking process of two wireless routers from different vendors through the utilization of a basic performance terminal tool such as “iperf”. Keywords—benchmarking; wireless; routers. network; performance; II. GOALS • First, this project seeks to execute, analyze and evaluate a Network Performance Analysis based on real measurements. • To benchmark two wireless routers of different vendors using an active software network performance tool such as iperf. • To measure and evaluate the total available throughput of parallel TCP connections over tested wireless routers (acces points) in a server/client configuration. • To determine and exanimate the average jitter and percentage of lost packets of parallel UDP connections over the tested wireless...
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...sensory stores. (There is a sensory store for each sense.) Some information in the sensory stores is attended to and processed further by the short-term store. In turn some information processed in the short-term store is transferred to the long-term store through rehearsal or verbally repeating it. The more something is rehearsed the stronger the memory trace in the long-term memory. The main emphasis of this model is on the structure of memory on rehearsal | A02Case studies support to the multi-store modelGlanzer and Cunitz found that when rehearsal is prevented, the recency effect disappears.There is evidence that encoding is different in short term and long-term memory. For example Baddeley There are huge differences in the duration of information in the short term and long term memory (Peterson & Peterson). (Bahrick et al.)oversimplified. (reductionist) | Outline and evaluate the working memory model (12) | Episodic buffer was added by Baddeley in 2000 | Active process: PET scans Amnesiac case studies Shallice & Warrington (1974) Baddeley (1986) found that patients with damage to their frontal lobe had problems concentrating suggesting damage to the central executive (researcher biased) | Outline and evaluate the cognitive interview (12)Outline and evaluate how a cognitive interview can be used to improve the accuracy of eyewitness testimony (EWT). (12) | Findings concerning the unreliability of eye-witness accounts have led researchers to attempt to devise methods...
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...can respond to this article at Downloaded from To subscribe to The British Journal of Psychiatry go to: http://bjp.rcpsych.org/site/subscriptions/ B R I T I S H J O U R N A L O F P S YC H I AT RY ( 2 0 0 0 ) , 1 7 6 , 2 6 6 ^ 2 7 2 Suicide in psychiatric hospital in-patients Risk factors and their predictive power JOHN POWELL, JOHN GEDDES, JONATHAN DEEKS, MICHAEL GOLDACRE and KEITH HAW TON Background Psychiatric hospitalinpatients are knownto be at high riskof highriskof suicide, yetthereislittlereliableknowledge of risk factors or their predictive power. Aims To identify risk factors for suicide in psychiatric hospital in-patients and to evaluate their predictive power in detecting people at risk of suicide. Method Using a case ^ control design, 112 people who committed suicide while in-patients in psychiatric hospitals were compared with112 randomly selected controls.Univariate analysis and multivariate analyses were used to estimate odds ratios and adjusted likelihood ratios. Results The rate of suicide in psychiatric in-patients was13.7 (95% CI11.7^16.1) per 10 000 admissions.There were five predictive factors with likelihood ratios 42, following adjustment: planned suicide attempt, 4.1; actual...
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...Partial Fulfillment of Requirements for Honors” Thesis Advisor: Professor David Ludden May 2006 ~ Acknowledgements ~ I would like to express my appreciation and thanks to my thesis advisor, Professor Ludden of the History Department for his guidance and advice this semester. Thank you also to Dr. Danielle Warren of the Wharton School Legal Studies Department, for taking the time in her busy end-of-semester schedule to read my paper and give me much appreciated feedback. Finally, I wish to express my gratitude to my friends and family for their encouragement and support. Special thanks to my parents, especially to my mother for being the person who first sparked my interest in sustainable development which has driven me to write this paper. 1 TABLE OF CONTENTS Introduction PART I: Corporate-NGO partnerships in general A- The emerging trend of corporate-NGO partnerships B- Benefits of corporate-NGO partnerships C- Difficulties of partnerships and requirements for successful implementation PART II: Corporate-NGO partnerships in the ethical trade movement A- Lessons drawn from the Body Shop’s Community Trade Program B- Case study of a successful partnership in Sustainable Coffee: Starbucks and...
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...Journal of Urban Health: Bulletin of the New York Academy of Medicine, Vol. 89, No. 5 doi:10.1007/s11524-012-9683-9 * 2012 The New York Academy of Medicine Changes in Smoking Prevalence and Number of Cigarettes Smoked Per Day Following the Implementation of a Comprehensive Tobacco Control Plan in New York City Micaela H. Coady, John Jasek, Karen Davis, Bonnie Kerker, Elizabeth A. Kilgore, and Sarah B. Perl ABSTRACT The New York City (NYC) Health Department has implemented a comprehensive tobacco control plan since 2002, and there was a 27% decline in adult smoking prevalence in NYC from 2002 to 2008. There are conflicting reports in the literature on whether residual smoker populations have a larger or smaller share of “hardcore” smokers. Changes in daily consumption and daily and nondaily smoking prevalence, common components used to define hardcore smokers, were evaluated in the context of the smoking prevalence decline. Using the NYC Community Health Survey, an annual random digit dial, cross-sectional survey that samples approximately 10,000 adults, the prevalence of current heavy daily, light daily, and nondaily smokers among NYC adults was compared between 2002 and 2008. A five-level categorical cigarettes per day (CPD) variable was also used to compare the population of smokers between the 2 years. From 2002 to 2008, significant declines were seen in the prevalence of daily smoking, heavy daily smoking, and nondaily smoking. Among daily smokers,...
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...informed of official policies and meeting all relevant requirements. When required changes to the Catalog occur, they will be communicated through catalog inserts and other means until a revised edition of the Catalog is published. The policies in this Catalog have been approved under the authority of the ECPI University Board of Trustees and, therefore, constitute official University policy. Students should become familiar with the policies in this Catalog. These policies outline both student rights and student responsibilities. The University reserves the right and authority at any time to alter any or all of the statements contained herein, to modify the requirements for admission and graduation, to change or discontinue programs of study, to amend any regulation or policy affecting the student body, to increase tuition and fees, to deny admission, to revoke an offer of admission and to dismiss from the University any student at any time, if it is deemed by the University to be in the best interest of the University, the University community, or the student to do so. The provisions of this publication are subject to change without notice and nothing in this publication may be considered as setting forth terms of a contract between a student or a prospective student and ECPI University....
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...1 A Study of the Parameters Influencing the Capacity Credit of WECS- A Simplified Approach Sushil Patil, Student Member, IEEE, and R. Ramakumar, Life Fellow, IEEE Abstract--In recent years, penetration of wind generated electricity into power grids has been increasing significantly. During the last few decades, wind energy has doubled in capacity every three years. Because of the intermittent characteristics of wind power, it is usually difficult to determine an acceptable penetration level to maintain specific reliability requirements. The need for better capacity credit assessment for wind electric conversion systems is clear. Considerable work has been done in the past to estimate the capacity credit of WECS (wind electric conversion system) and several approaches have been proposed. This paper examines the influence of different parameters on the Capacity Credit using a simplified approach based on an effective forced outage rate (FOR) for WECS. The parameters considered are penetration level, amount and variability of load, generation configuration and wind regimes. Index Terms— Capacity Credit, Wind Electric Conversion System, Annual Load Duration Curve, Wind Penetration, Generation Configuration Electric power systems must have sufficient reserves so that generation is always adequate to meet varying customer demand. Because electricity demand cannot be known in advance with certainty, and also because generators, transmission lines and distribution systems can experience...
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...Age: A Systematic Review for the American College of Physicians Katrina Armstrong, MD, MSCE; Elizabeth Moye, BA; Sankey Williams, MD; Jesse A. Berlin, ScD; and Eileen E. Reynolds, MD Background: The risks and benefits of mammography screening among women 40 to 49 years of age remain an important issue for clinical practice. Purpose: To evaluate the evidence about the risks and benefits of mammography screening for women 40 to 49 years of age. Data Sources: English-language publications in MEDLINE (1966 – 2005), Pre-MEDLINE, and the Cochrane Central Register of Controlled Trials and references of selected studies through May 2005. Study Selection: Previous systematic reviews; randomized, controlled trials; and observational studies. Data Extraction: Two independent reviewers. Data Synthesis: In addition to publications from the original mammography trials, 117 studies were included in the review. Metaanalyses of randomized, controlled trials demonstrate a 7% to 23% reduction in breast cancer mortality rates with screening mammography in women 40 to 49 years of age. Screening mammography is associated with an increased risk for mastectomy but a decreased risk for adjuvant chemotherapy and hormone therapy. The risk for death due to breast cancer from the radiation exposure involved in mammography screening is small and is outweighed by a reduction in breast cancer mortality rates from early detection. Rates of falsepositive results are high (20% to 56% after 10 mammograms)...
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...Medicine, 600 N. Wolfe Street, Meyer 109, Baltimore, MD 21287-7228, USA Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21287, USA c Department of Mental Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21287, USA b a r t i c l e in fo Article history: Received 14 February 2008 Received in revised form 7 April 2008 Accepted 8 April 2008 Keywords: Hoarding Prevalence Risk factors Personality disorders Comorbidity abstract Little is known about the prevalence and correlates of hoarding behavior in the community. We estimated the prevalence and evaluated correlates of hoarding in 742 participants in the Hopkins Epidemiology of Personality Disorder Study. The prevalence of hoarding was nearly 4% (5.3%, weighted) and was greater in older than younger age groups, greater in men than women, and inversely related to household income. Hoarding was associated with alcohol dependence; paranoid, schizotypal, avoidant, and obsessive–compulsive personality disorder traits; insecurity from home break-ins and excessive physical discipline before 16 years of age; and parental psychopathology. These findings suggest that hoarding may be relatively prevalent and that alcohol dependence, personality disorder traits, and specific childhood adversities are associated with hoarding...
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...172 Journal of Basic & Applied Sciences, 2013, 9, 172-177 Removal of Methylene Blue and Malachite Green Dye Using Different Form of Coconut Fibre as Absorbent Y.C. Wong*, M.S.R. Senan and N.A. Atiqah Faculty of Agro Based Industry, Universiti Malaysia Kelantan, Jeli Campus, Locked Bag 100, 17600 Jeli, Kelantan, Malaysia Abstract: In this study, coconut fibres are grounded and sieved into the size of 150 μm granular form and filament form of uniform size 2.0 cm for absorption test of methylene blue and malachite green dye in single dye solution were studied. As a result, granular form of coconuts have higher percentage removal dye of methyelene blue and malachite green blue which is 98.3% and 99.0%. This study shows a major approach of turning the agricultural waste to an added value product which is absorbent for wastewater treatment especially in textile industries sector. Keywords: Coconut fibre, absorption, melethylene blue dye, malachite green dye. 1. INTRODUCTION Water pollution has become a serious problem around the world including Malaysia. Malaysia is one of the country that fall into this negatively impacts on the sustainability of water resources. Many industries sector in Malaysia such as textile, paper, paint, pharmaceuticals, food, leather, cosmetics, tannery, printing and plastics used wide verieties of dye in order to color their product for example such as batik in textile industry. Among those industries sector in Malaysia, textiles industry ranked...
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...recommendations may be associated with better health outcomes. However, optimal serum concentrations of 25-hydroxyvitamin D [25(OH)D] have not been defined. This review summarizes evidence from studies that evaluated thresholds for serum 25(OH)D concentrations in relation to bone mineral density (BMD), lowerextremity function, dental health, and risk of falls, fractures, and colorectal cancer. For all endpoints, the most advantageous serum concentrations of 25(OH)D begin at 75 nmol/L (30 ng/mL), and the best are between 90 and 100 nmol/L (36 – 40 ng/mL). In most persons, these concentrations could not be reached with the currently recommended intakes of 200 and 600 IU vitamin D/d for younger and older adults, respectively. A comparison of vitamin D intakes with achieved serum concentrations of 25(OH)D for the purpose of estimating optimal intakes led us to suggest that, for bone health in younger adults and all studied outcomes in older adults, an increase in the currently recommended intake of vitamin D is warranted. An intake for all adults of 1000 IU (40 g) vitamin D (cholecalciferol)/d is needed to bring vitamin D concentrations in no less than 50% of the population up to 75 nmol/L. The implications of higher doses for the entire adult population should be addressed in future studies. Am J Clin Nutr 2006;84:18 –28. KEY WORDS 25-Hydroxyvitamin D, vitamin D intake, bone density, lower-extremity strength, colorectal cancer INTRODUCTION suppression of PTH or optimal calcium...
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...Innovation Approach Muhammad Ashraf Khan Chairman, Department of Mass Communication, Bahauddin Zakariya University, Multan, Pakistan Email : ashraf_1963@yahoo.com Aqsa Iram Shahzadi Khan Lecturer, Department of Mass Communication, Bahauddin Zakariya University, Multan, Pakistan Email : mrsaqsairam@yahoo.com Abstract This paper focuses on the theory of adoption of cellular phone as an innovation and its diffusion and penetration in the Pakistani society and to confirm Roger’s theory of diffusion of innovation. More specifically, the study aims to test if five categories of adopters and five stages of adoption [as suggested by Roger (1976)] adequately explain the behavior of cellular phone users in Pakistan. The study also aims to evaluate the role played by advertising in the process of diffusion of innovation. An attempt is also made to study relationships among other variables of interest. To achieve its objectives, this study formulates the diffusion of innovation theory using survey research method from population of Pakistan(a sample of200 respondents are approached) and various statistical techniques are applied on the information gathered before drawing any conclusions. Our results support the theory of diffusion of innovation. We do not find an evidence to believe that advertising plays a statistically significant direct role in the process of diffusion of innovation, although we have not explored the extent of its indirect contribution in the process. Keywords:...
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...Reducing Rehospitalizations in Skilled Nursing Facilities Increases the Quality of Care Residents Receive and Decreases Unnecessary Health Care Cost Nurses have the power to increase positive patient outcomes by implementing changes in their practice based on the evidence found in the nursing literature. Utilizing evidence-based practice (EBP) increases nurses job satisfaction, increases communication across the interdisciplinary team, enables nurses to provide their patients with high-quality care and decreases health care cost. The purpose of this paper is to describe why readmissions from nursing homes (NHs) is a nurse practice problem, nurse practice changes to reduce hospitalizations in NHs, evidence found in the nursing literature that supports the change in nursing practice and how to evaluate the change in practice after implementation of interventions. The Problem Residents in NHs continue to experience potentially avoidable 30-day readmissions to hospitals. Rahman, Foster, Grabowski, Zinn, & Mor (2013) define 30-day readmissions as when the resident is readmitted to the hospital within 30 days of being discharged from the hospital to NHs and avoidable readmissions as conditions that can be managed safely and efficiently in NHs instead of the resident being transferred to the hospital (p. 1901) There are more than 1.6 million Americans living in NHs in the United States and 23.5% of these Americans experience readmission to the hospital within 30 days of discharges...
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...Computers & Industrial Engineering 66 (2013) 158–170 Contents lists available at SciVerse ScienceDirect Computers & Industrial Engineering journal homepage: www.elsevier.com/locate/caie Iterative approaches for solving a multi-objective 2-dimensional vector packing problem Nadia Dahmani a, François Clautiaux b,⇑, Saoussen Krichen a, El-Ghazali Talbi b a b Institut Supérieur de Gestion de Tunis, LARODEC, 41 Avenue de la Liberté, Cité Bouchoucha, 2000 Le Bardo, Tunisie Université de Lille 1, LIFL CNRS UMR 8022, INRIA Lille-Nord Europe, Bâtiment INRIA, Parc de la Haute Borne, 59655 Villeneuve d’Ascq, France a r t i c l e i n f o a b s t r a c t In this paper, we address a bi-objective 2-dimensional vector packing problem (Mo2-DBPP) that calls for packing a set of items, each having two sizes in two independent dimensions, say, a weight and a height, into the minimum number of bins. The weight corresponds to a ‘‘hard’’ constraint that cannot be violated while the height is a ‘‘soft’’ constraint. The objective is to find a trade-off between the number of bins and the maximum height of a bin. This problem has various real-world applications (computer science, production planning and logistics). Based on the special structure of its Pareto front, we propose two iterative resolution approaches for solving the Mo2-DBPP. In each approach, we use several lower bounds, heuristics and metaheuristics. Computational experiments are performed on benchmarks inspired from...
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...Medical Sciences, RMIT University, Melbourne, Australia Submitted 8 June 2005: Accepted 21 November 2005 Abstract Objectives: To describe parental concerns about their child’s weight, to determine the proportion of parents taking preventive action to avoid obesity in their children and the predictors of taking preventive action, and to describe the strategies adopted by parents. Design: A cross-sectional survey was conducted. Children’s heights and weights were measured, and parents completed a questionnaire that included measures of their own weight status, perceptions of their child’s weight, concerns about their child’s current weight and future weight as an adolescent and adult, and the strategies used to prevent obesity. Setting: The study was conducted in Melbourne, Australia. Subjects: A total of 291 families of children aged 5–6 years and 919 families of children aged 10–12 years participated. Results: Eighty-nine per cent of parents of overweight 5–6-year-olds and 63% of parents of overweight 10–12-year-olds were unaware their child was overweight. Seventy-one per cent of parents of overweight 5–6-year-olds and 43% of parents of overweight 10–12-year-olds were not concerned about their child’s current weight. Although 31% of parents of 5–6-year-olds and 43% of parents of 10–12-year-olds were taking action to prevent unhealthy weight gain in their children, less-educated parents were less likely...
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