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Search Results: 1 - 10 of 2335 matches for " Benoit Hudson "
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Effectiveness of Preference Elicitation in Combinatorial Auctions
Benoit Hudson,Tuomas Sandholm
Computer Science , 2002,
Abstract: Combinatorial auctions where agents can bid on bundles of items are desirable because they allow the agents to express complementarity and substitutability between the items. However, expressing one's preferences can require bidding on all bundles. Selective incremental preference elicitation by the auctioneer was recently proposed to address this problem (Conen & Sandholm 2001), but the idea was not evaluated. In this paper we show, experimentally and theoretically, that automated elicitation provides a drastic benefit. In all of the elicitation schemes under study, as the number of items for sale increases, the amount of information elicited is a vanishing fraction of the information collected in traditional ``direct revelation mechanisms'' where bidders reveal all their valuation information. Most of the elicitation schemes also maintain the benefit as the number of agents increases. We develop more effective elicitation policies for existing query types. We also present a new query type that takes the incremental nature of elicitation to a new level by allowing agents to give approximate answers that are refined only on an as-needed basis. In the process, we present methods for evaluating different types of elicitation policies.
What Makes School Leaders Inspirational and How Does This Relate to Mentoring?  [PDF]
Peter Hudson
Open Journal of Leadership (OJL) , 2013, DOI: 10.4236/ojl.2013.24014

Leadership comes in many forms (such as transactional, transformational,anddistributed) and its effectiveness can inspire others to achieve organisational goals and visions.Inspiration as an emotional event requires receptiveness and an awareness of social interdependence. When mentees are inspired by mentor role models they can extend personal attributes and practices.Similar to other leaders, inspiring mentors can motivate mentees to develop a strength of character and achieve goals in the workplace.What makes school leaders inspirational and how does this relate to mentoring? This qualitative study collects data from 25 experienced teachers, which involved a written questionnaire, work samples, and audio-recorded focus group discussions. These participants indicated that inspirational school leaders were those who had: 1) organisational goals (e.g., visionary, goal driven, innovative, & motivational); 2) professional skills such as being knowledgeable, communicative, and acknowledging others’ achievements; and 3) personal attributes (e.g., integrity, active listening, respectful, enthusiastic, & approachable). This research shows how mentors and school leaders can consider the inspirational attributes and practices outlined by participants in this study to inspire teaching staff. For example, an awareness of attentive listening, motivational and visionary practices, and acknowledging individual achievements can guide school leaders and mentors to inspire others for achieving organsational goals and visions.

Coping Complexity Model: Coping Stressors, Coping Influencing Factors, and Coping Responses  [PDF]
Kathleen Hudson
Psychology (PSYCH) , 2016, DOI: 10.4236/psych.2016.73033

Aim: To describe the complex phenomena of coping involving the stressors, influencing factors, and responses of coping via a mid-range theory Background: Previous models have presented the concepts of coping, this model expands previous models, creates a revision which is more complex and more comprehensive than previous work. Design: Model includes components of initial stressors, key critical coping influencing factors, and various types of coping responses, either healthy or unhealthy responses. Results: Coping is complex and multifaceted. This model portrays a comprehensive overview of the facets of coping, including temporary, effective, and destructive coping responses. A list of key influencing factors is presented to assist with highlighting possible factors that can influence the overall potential adaptive (healthy) or maladaptive responses (unhealthy). This model outlines the various possible pathways of coping. Conclusion: This model provides a comprehensive complex coping overview which can be used for education, clinical, and research applications.

Nursing Student Engagement: Taking a Closer Look  [PDF]
Kathleen Hudson, Rebecca Carrasco
Open Journal of Nursing (OJN) , 2017, DOI: 10.4236/ojn.2017.72017
Abstract: Nursing student engagement is a critical and enhancing means of ensuring students stay within their education, and subsequently within the nursing profession. Engaged students with having higher ethical standards and behaviors, are certainly “caring” with their care delivery, and are dependable and competent with their teamwork. These are rewarding aspects of nursing practice. This research evaluates student nurses’ perceptions and their sense of engagement in relation to nursing and their educational experiences.
What elk, wolves and caterpillars have in common—The perfect forager theorem  [PDF]
Piotr Weclaw, Robert J. Hudson
Open Journal of Ecology (OJE) , 2013, DOI: 10.4236/oje.2013.32016

It is widely accepted that the Marginal Value Theorem (MVT) describes optimal foraging strategies of animals and the mechanism proposed by the MVT has been supported by a number of field observations. However, findings of many researchers indicate that in natural conditions foragers do not always behave according to the MVT. To address this inconsistency, in a series of computer simulation experiments, we examined the behaviour of four types of foragers having specific foraging efficiencies and using the MVT strategies in 15 different landscapes in an ideal environment (no intra-and inter-specific interactions). We used data on elk (Cervus elaphus) to construct our virtual forager. Contrary to the widely accepted understanding of the MVT (residence time in a patch should be longer in environments where travel time between patches is longer) we found that in environments with the same average patch quality and varying average travel times between patches, patch residence times of some foragers are not affected by travel times. Based on our analysis we propose a mechanism responsible for this observation and formulate the perfect forager theorem (PFT). We also introduce the concepts of a foraging coefficient (F) and foragers’ hub (α), and propose a model to describe the relationship between the perfect forager and all other forager types.

Soybean Oil-Quality Variants Identified by Large-Scale Mutagenesis
Karen Hudson
International Journal of Agronomy , 2012, DOI: 10.1155/2012/569817
Abstract: To identify genetic variation for fatty acid composition in mature soybean seeds, 4566 M3 generation seed samples from a chemically mutagenized population were subjected to fatty acid profiling by gas chromatography. In the population, a wide range of variation in the content for each of the five major fatty acids was observed. Seventy-nine lines were identified which contained significantly high or low levels of one of the five major soybean fatty acids. These lines were advanced to the subsequent generation. Of the 79 lines showing a variant fatty acid profile in the M3, 52 showed clear heritability for the oil composition in the seeds of the subsequent generation. These lines are likely to represent 52 distinct genetic mutations. These mutants may represent new loci involved in the determination of soybean seed oil content or could be new isolates or alleles of previously identified genetic variants for soybean oil composition. 1. Introduction Soybean oil is composed of five major fatty acids, which are synthesized in the seed during development [1]. In general, wild-type soybeans contain 10–12% palmitic acid (16?:?0), 3-4% stearic acid (18?:?0), 20–25% oleic acid (18?:?1), 50–55% linoleic acid (18?:?2), and 8–10% linolenic acid (18?:?3). Soybean oil has industrial uses and is also a source of vegetable oil for human consumption. For these divergent applications, a modified fatty acid composition profile is sometimes desirable. For example, oil low in the saturated fatty acid palmitate has health benefits in food oils, and reduction of linolenic acid results in increased oxidative stability without the need for hydrogenation [2]. However, for some industrial applications, increased levels of saturated fatty acids (stearate and palmitate) could be desirable [3]. Additional alleles providing new ways to incorporate new and existing oil composition traits could be of use to breeders for many reasons. Genetic variation is an inexpensive and nontransgenic way to achieve alterations in oil content, which does not require postharvest processing. Soybean mutagenesis has previously been used for the successful improvement of seed oil composition [4–6]. In addition, novel alleles have been identified in germplasm collections of natural accessions, and the combination of these two sources of genetic variation has resulted in the identification of a number of soybean genotypes with modified oil content [2, 3]. In some cases genetic lesions underlying these traits have been identified at the molecular level. In all published instances for soybean, the mutations
Computing genetic evaluations through application of generalized least squares to an animal model
GFS Hudson
Genetics Selection Evolution , 1986, DOI: 10.1186/1297-9686-18-1-31
A primer of research strategies undertaken in health centers
Hudson MF
Journal of Multidisciplinary Healthcare , 2013, DOI: http://dx.doi.org/10.2147/JMDH.S42322
Abstract: primer of research strategies undertaken in health centers Review (453) Total Article Views Authors: Hudson MF Published Date March 2013 Volume 2013:6 Pages 93 - 98 DOI: http://dx.doi.org/10.2147/JMDH.S42322 Received: 04 January 2013 Accepted: 08 February 2013 Published: 14 March 2013 Matthew F Hudson Greenville Hospital System, Greenville, SC, USA Abstract: This discussion defines various research approaches undertaken in health care or health promotion settings, notably basic science research, translational research, comparative effectiveness research (CER), implementation sciences, and quality improvement. This discussion particularly clarifies the relationship between translational research implementation sciences, comparative effectiveness research (CER), and quality improvement; this discussion further notes how these particular efforts are included in the Health Service Research. The discussion may: (1) introduce novice researchers, practitioners and administrators to various research approaches, (2) establish shared language that enhances comprehension of research strategies sharing similar attributes, and (3) clarify future research direction and resource allocation for health researchers, administrators, and practitioners.
Policy change and policy dilemmas: interpreting the community services White Paper in England
Bob Hudson
International Journal of Integrated Care , 2006,
Abstract: Context: In 2006 the Labour Government in England published its long awaited White Paper on ‘community services’, following on from the 2005 Green Paper on the future of social care. The policy envisages an unprecedented shift of activity and resources from acute care to community settings, along with a much stronger focus on preventive care. Several mechanisms are to be put in place to ensure this shift takes place, most notably practice-based commissioning, payments-by-results and enhanced partnership working. Purpose: This article outlines the intended changes and assesses the extent to which they add up to a coherent strategy. Conclusion: It is argued that although there is widespread support for the overall vision, the strategy contains some difficult policy tensions that are common to other welfare systems. These will have to be addressed if the vision is to be a reality.
Ten years of jointly commissioning health and social care in England
Bob Hudson
International Journal of Integrated Care , 2011,
Abstract: Introduction: Over the past two decades, the service delivery landscape across health and social care in England has been reshaped in order to separate the commissioning of services from their delivery. Policy/practice: The market ethic that underpinned this move has depicted the previously conflated roles as unresponsive to the needs of service users and dominated by provider interests. As well as seeming to offer commissioners the chance to change the nature of provision and type of provider, this policy model also created a further new opportunity - for joint commissioning across organisational boundaries. The logic here is that if two or more commissioners can jointly shape their programmes then they will be better able to secure integrated provision across a range of separate agencies and professions. Conclusion: This article reviews the experience of joint commissioning across health and social care over the past decade in England. It contrasts the proliferation of policies against the paucity of achievements, seeks explanations for this situation, and offers pointers for future development.
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