280,167 research outputs found
RETS Revisited : Connecting renewables to the grid - a report by the Transmission Working Group of the Department of Trade & Industry
The aim of RETS Revisited is to review the progress that has occurred since the original RETS Report in June 2003. Given the large amount of wind generation planned, and the fact that much of it does not yet have planning consent or firm grid connection offers, it was felt that it would be helpful to take a further strategic look forward, rather than simply relying on the existing system to react to individual connection applications as and when required. RETS Revisited therefore: K considers the current likely volumes of new renewable generation, the timescales for this generation to be ready for connection to the transmission system and transmission issues impacting on the delivery of projects. K considers the effects on costs to the consumer of the rate of development of the transmission system in accommodating renewable energy to meet Government targets. K makes recommendations for action in order to connect sufficient renewables to meet the 2010 target and the aspirations beyond to 2020. Government policy is clear on the requirement for more renewable energy, and there is a market instrument, the Renewables Obligation, in place until 2027 which is driving the development of renewable projects. The Energy White Paper in 2003 recognised the need for the remodelling of the transmission grid to accept generation in new locations. Wind will be the technology capable of delivering significant capacity by 2010 and beyond. By its very nature the technology has limited ability to respond to locational price signals. In order for new generation projects to be connected, there needs to be a parallel development of transmission infrastructure. Transmission upgrades of over £560m were approved by Ofgem in December 20041. These will assist the flows of electricity from Scotland. There is a need to ensure that these projects are not unduly delayed in construction. A review of the need for the linkage between upgrades to the Scotland-England interconnectors and Beauly-Denny line should be carried out now
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An exploration of knowledge and understanding – the eighth flow
The argument for understanding Lean construction as a socio-technical field is growing and the need to better consider the role of human beings within construction systems is becoming the dominant factor in project success. Many current attributes of lean already focus on people and on human engagement approaches but the field of lean construction addresses project environments that are often complex and highly variable. The authors argue that the successful delivery of these projects relies on the creation of a common understanding of the project objectives within the diverse value systems of project participants and wider society. Additionally, many of the new ways of working that lean thinking brings already support the creation of a common understanding and could be harnessed to better effect.
Based on a literature review and supported by case study examples the authors explore the nature of knowledge and understanding and position them within an eight flow model for construction production. The findings indicate a need to reconsider the development of a common understand for each project due to the tacit nature of experiential knowledge held within the project team and the specificity and complexity of the project environment. As a result effort is required to generate and maintain a common understanding throughout the project duration. The continued attention and action required to maintain this common understanding elevates it to a flow of equal status to those identified in Koskela’s flow production model thus increasing the number of flows to eight. A significant lean construction case study is revisited and examined to identify interventions undertaken to achieve this generation and management of common understanding thus demonstrating that this development already exists, albeit intuitively, as an element of “lean thinking”
From Teasing to Torment: School Climate Revisited - A Survey of U.S. Secondary School Students and Teachers
From Teasing to Torment: School Climate Revisited, A Survey of U.S. Secondary School Students and Teachers provides an in-depth look at the current landscape of bias and peer victimization as reported by students and teachers from across the nation. In addition to examining various types of bias, including those based on race/ethnicity, religion, body size, and ability, this report provides a focused look at LGBTQ issues in secondary schools. Comparing findings to a similar survey we conducted in 2005, the report discusses the progress that has been made over the past ten years, as well as highlights the challenges that remain. It also offers recommendations and strategies to improve school climate for all students.Specifically, the research report addresses:Student and teacher perceptions of school climate; Student experiences of safety, bullying, and harassment, including biased incidents based on race/ethnicity, sexual orientation, body size, gender, religion, ability, economic status, and gender expression;Teacher intervention in bullying and incidents of bias; LGBT-supportive teacher practices, such as advising GSA or including LGBT content in teaching;Teacher professional development (pre-service and in-service) in bullying, diversity, and LGBT issues; andDifferences in students' school experiences based on race/ethnicity, LGBTQ status, gender nonconformity, and geography (i.e., urbanicity, region), among others
Contaminated Confessions Revisited
A second wave of false confessions is cresting. In the first twenty-one years of post-conviction DNA testing, 250 innocent people were exonerated, forty of which had falsely confessed. Those false confessions attracted sustained public attention from judges, law enforcement, policymakers, and the media. Those exonerations not only showed that false confessions can happen, but did more by shedding light on the problem of confession contamination, in which details of the crime are disclosed to suspects during the interrogation process. As a result, false confessions can appear deceptively rich, detailed, and accurate. In just the last five years, there has been a new surge in false confessions — a set of twenty-six more false confessions among DNA exonerations. All but two of these most recent confessions included crime scene details corroborated by crime scene information. Illustrating the power of contaminated false confessions, in nine of the cases, defendants were convicted despite DNA tests that excluded them at the time. As a result, this second wave of false confessions should cause even more alarm than the first. In the vast majority of cases there is no evidence to test using DNA. Unless a scientific framework is adopted to regulate interrogations, including by requiring recording of entire interrogations, overhauling interrogation methods, providing for judicial review of reliability at trial, and informing jurors with expert testimony, the insidious problems of confession contamination will persist
Affiliate Funds: A Rising Practice in Community Philanthropy
Describes the experiences of several of Irvine's Community Foundations Initiative foundations that have used affiliate funds, along with recent research in the field
Belbin Revisited: The Construct Validity of the Interplace II Team Role Instrument
In the present study the construct validity of the revised edition of the Belbin Team Roles measure, the so-called Interplace II program, is tested. Three parallel parts were used to determine someone’s team roles. The sample included 1434 persons who were asked to fill out the self-perception inventory and the self-perception assessment, whereas the observer assessment sheet was filled out by at least four observers. The inter-rater reliability appeared to be satisfactory across all team roles. As for the construct validity, which was studied in a multitrait-multimethod design using structural equation modeling, the results revealed that the discriminant and convergent validity for the instrument as a whole is good; only a small effect could be contributed to method variance.Belbin;multitrait-multimethod methodology;team roles;teams
Bibliometric studies on single journals: a review
This paper covers a total of 82 bibliometric studies on single journals (62 studies cover unique titles) published between 1998 and 2008 grouped into the following fields; Arts, Humanities and Social Sciences (12 items); Medical and Health Sciences (19 items); Sciences and Technology (30 items) and Library and Information Sciences (21 items). Under each field the studies are described in accordance to their geographical location in the following order, United Kingdom, United States and Americana, Europe, Asia (India, Africa and Malaysia). For each study, elements described are (a) the journal’s publication characteristics and indexation information; (b) the objectives; (c) the sampling and bibliometric measures used; and (d) the results observed. A list of journal titles studied is appended. The results show that (a)bibliometric studies cover journals in various fields; (b) there are several revisits of some journals which are considered important; (c) Asian and African contributions is high (41.4 of total studies; 43.5 covering unique titles), United States (30.4 of total; 31.0 on unique titles), Europe (18.2 of total and 14.5 on unique titles) and the United Kingdom (10 of total and 11 on unique titles); (d) a high number of bibliometrists are Indians and as such coverage of Indian journals is high (28 of total studies; 30.6 of unique titles); and (e) the quality of the journals and their importance either nationally or internationally are inferred from their indexation status
Monitoring Challenges and Approaches for P2P File-Sharing Systems
Since the release of Napster in 1999, P2P file-sharing has enjoyed a dramatic rise in popularity. A 2000 study by Plonka on the University of Wisconsin campus network found that file-sharing accounted for a comparable volume of traffic to HTTP, while a 2002 study by Saroiu et al. on the University of Washington campus network found that file-sharing accounted for more than treble the volume of Web traffic observed, thus affirming the significance of P2P in the context of Internet traffic. Empirical studies of P2P traffic are essential for supporting the design of next-generation P2P systems, informing the provisioning of network infrastructure and underpinning the policing of P2P systems. The latter is of particular significance as P2P file-sharing systems have been implicated in supporting criminal behaviour including copyright infringement and the distribution of illegal pornograph
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