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21.
文章认为在现代信息技术条件下,高校图书馆面临新的机遇与挑战,必须以逆水行舟不进则退的危急感进行改革,促进高校图书馆持续发展,满足科研与教学对文献信息的需求。 相似文献
22.
Searching online information resources using mobile devices is affected by small screens which can display only a fraction
of ranked search results. In this paper we investigate whether the search effort can be reduced by means of a simple user
feedback: for a screenful of search results the user is encouraged to indicate a single most relevant document. In our approach
we exploit the fact that, for small display sizes and limited user actions, we can construct a user decision tree representing
all possible outcomes of the user interaction with the system. Examining the trees we can compute an upper limit on relevance
feedback performance. In this study we consider three standard feedback algorithms: Rocchio, Robertson/Sparck-Jones (RSJ)
and a Bayesian algorithm. We evaluate them in conjunction with two strategies for presenting search results: a document ranking
that attempts to maximize information gain from the user’s choices and the top-D ranked documents. Experimental results indicate
that for RSJ feedback which involves an explicit feature selection policy, the greedy top-D display is more appropriate. For
the other two algorithms, the exploratory display that maximizes information gain produces better results. We conducted a
user study to compare the performance of the relevance feedback methods with real users and compare the results with the findings
from the tree analysis. This comparison between the simulations and real user behaviour indicates that the Bayesian algorithm,
coupled with the sampled display, is the most effective.
Extended version of “Evaluating Relevance Feedback Algorithms for Searching on Small Displays, ” Vishwa Vinay, Ingemar J.
Cox, Natasa Milic-Frayling, Ken Wood published in the proceedings of ECIR 2005, David E. Losada, Juan M. Fernández-Luna (Eds.),
Springer 2005, ISBN 3-540-25295-9 相似文献
23.
24.
哈佛大学自2007年重建工程与应用科学学院以来,采取了与传统工程学科大相径庭的发展路径,以解决人类面临重大挑战的前沿科学为重点发展方向,以机制保障为学科交叉融合提供土壤,以空间优化调整助力研究、孵化、成果转化一体化发展,取得了显著成绩。哈佛大学工学院发展路径正体现了新工科建设思路,对我国高校加快建设发展新工科,推动学科深度交叉融合,优化调整空间布局,服务科研创新、成果转化等具有重要启示。 相似文献
25.
Lotta Haglund Annikki Roos Petra Wallgren‐Björk 《Health information and libraries journal》2018,35(3):251-255
Librarians in Sweden are facing huge challenges in meeting the demands of their organisations and users. This article looks at four key areas: coping with open science/open access initiatives; increasing demands from researchers for support doing systematic reviews; understanding user experiences in Swedish health science libraries; and the consequences of expanding roles for recruitment and continuing professional development. With regard to changing roles, there is an increasing shift from the generalist towards the expert role. The authors raise the issue as to how to prepare those new to the profession to the changing environment of health science libraries. 相似文献
26.
摘要:以我国企业体育文化质量预警为研究对象,运用文献资料法等研究方法,对我国企业体育文化质量预警的基础、质量建设情况和质量建设过程中存在的关键问题以及我国企业体育文化质量预警机制建设的策略等4个方面所涉及的我国企业体育文化发展与其企业体育文化核心竞争力等问题运用数学模型的形式进行定量、定性分析,得出主要结论:1)我国企业体育文化建设过程中的力量、体育文化效用、体育文化核心竞争力等都表现为较弱,各个企业的发展很不平衡,与其经济基础有着密切关系。2)我国企业体育文化在企业的影响力不足,而企业领导和企业体育管理者及其有关专家对目前的企业体育文化状况基本认同,基层体育工作者和参与者意见不尽统一,存在着较大的问题与危机,必须引起高度重视。3)我国企业体育文化的教育与培训情况不佳,导致对其文化的理解不够深入,身在中国企业体育文化环境之中,却无法准确表达其企业体育文化的内涵等问题,是除了领导不重视以外,教育培训工作薄弱是关键,影响了企业体育文化的传播与发展,也影响着我国企业文化建设及其企业经济效益与社会效益。4)我国企业体育文化质量预警策略是更新理念策略、加大投入策略和培训策略,从而保护和发展我国企业体育文化。这项研究对提示、提醒、发掘、完善我国企业体育文化建设具有引导、警示、促进作用,对进一步发挥企业体育文化建设对增加企业经济效益和社会效益起到积极的推动作用。 相似文献
27.
Enterprise profile plays an important role in promoting company in the international market, showing its strength, ex?panding its influence, and advancing their business. At present, the translation of... 相似文献
28.
杨志清 《安徽职业技术学院学报》2017,16(1):62-65
通过对安徽国防科技职业学院机电一体化专业学生的择业观和就业意向进行持续性调查和深入分析,剖析高职学生择业观教育过程中的影响因素及存在的问题,并从教育环境、教育机制、教育评价机制等方面提出解决对策,以期引导大学生树立正确的择业观。 相似文献
29.
This research addresses the relationship between ideal selves and social context from a social identity perspective. Based on Social Identity Theory (Tajfel and Turner, 1979, Tajfel and Turner, 1986) and related research, it is argued that ideal selves stand in a functional relationship with identity management strategies and that, consequently, shared beliefs about relevant intergroup relations influence the preferences for ideal selves. Three studies conducted with black and white adolescent and adult South Africans tested the assumption. The overall results of the studies confirmed that whether ideal selves corresponding to social change, social mobility or social creativity were preferred depended on whether the intergroup relations between black and white South Africans were perceived as secure or insecure. 相似文献
30.
Joël Pinson 《Journal of Sport Tourism》2017,21(2):133-152
ABSTRACTAlthough sports heritage is increasingly recognized as a potential catalyst of tourism, heritage sporting events (HSEs) are still an emerging concept in the academic literature. Notions that associate sports events and heritage remain rare, and are usually analysed through the scope of nostalgia sport tourism. This can be partly explained by an inclination to associate the notion of heritage with conventional ideas about folklore and traditional culture. Through a constructivist approach of heritage, this contribution argues that contemporary sports events, which would generally have competition as their primary focus, might also be perceived as HSEs. A comprehensive framework, built on a multi-disciplinary literature review, is presented to show the process that transforms an initial resource (a sports event) into an accomplished resource (a HSE), which might represent a competitive advantage for the territory. A qualitative–comparative analysis is conducted among 24 sports events in the French-speaking part of Switzerland, to observe the configurations of HSEs and understand which characteristics are necessary for the perceptions of a sports event as a heritage good. Interestingly, this contribution shows that if the event needs to be sustainable in the territory to be perceived as a HSE, it is not sufficient. Indeed, a differentiation strategy should be set up to distinguish the event from other more or less similar events, to be perceived as an authentic feature of the territory by the local population. 相似文献