Perfecting COUNTER and SUSHI to Achieve Reliable Usage Analysis     

Oliver Pesch 《期刊图书馆员》2013,64(3-4):353-365

The Counting Online Usage of Networked Electronic Resources (COUNTER) Code of Practice and Standardized Usage Statistics Harvesting Initiative (SUSHI) are two standards whose successful adoption will greatly assist librarians in performing accurate and timely usage analysis of their online collections and thus make more informed collection management decisions. Variations in how these standards have been applied by content providers to their SUSHI and COUNTER implementation are currently impacting their widespread adoption. The standards themselves are not broken—what is needed is concise guidelines on their implementation. This column reviews some of the roadblocks that impede consistent implementation of these standards as well as proposes recommendations that could form the basis of a community profile for these standards.  相似文献   

Lessons Learned from EIAH Metadata Application Profile (EMAP)     

Emad Khazraee  Jung-Ran Park 《Cataloging & classification quarterly》2013,51(5):472-485

The EIAH Metadata Application Profile (EMAP) has been designed to meet Encyclopedia of Iranian Architectural History (EIAH) needs regarding the organization of architectural resources. The application profile should satisfy community needs and should respect existing conventions; architects may think differently from archivists or museum curators. The key issues in the design process have been addressed here; namely, compliance with the special needs of EIAH data architecture, interoperability, compliance with Persian language and localization, as well as simplicity, critical because of the wide range of non-cataloger users of the system. The EMAP has been designed based on Dublin Core; six element refinements have been defined for the Dublin Core element “subject” to facilitate the interconnection of resources to entities in the EIAH ontology. In particular, human readable documentation guidelines have been emphasized as an important factor in metadata quality. Metadata crosswalks have also been defined with major standards of the domain to improve interoperability.  相似文献   

Authors in the Mathematical Reviews/MathSciNet Database     

Norman Richert 《Cataloging & classification quarterly》2013,51(6):521-527

The Physics-Astronomy-Mathematics Division Vendor Update Session at the Special Libraries Association 2010 Annual Conference in New Orleans had a panel of four representatives of organizations involved in author authority work. In my presentation I described the involvement of Mathematical Reviews/MathSciNet in author authority work, from the hand work done with file cards in 1940 through the present day work combining computer systems and hand work. This article is an expanded version of my comments.  相似文献   

Conceptions of  Biology and Approaches to Learning of First Year Biology Students: Introducing a technique for tracking changes in learner profiles over time     

Rosanne Quinnell  Elizabeth May  Mary Peat 《International Journal of Science Education》2013,35(7):1053-1074

We surveyed first year students at the start and at the end of their first semester of university biology (n?=?285) as to their approaches to study (surface, deep) and their conceptions of biology (fragmented, cohesive). Hierarchical cluster analysis was used to group students who responded similarly to the survey; this resolved four Learner Profiles based on specific combinations of approach to study and conception of biology. By comparing cluster membership at the start and end of the semester we could assess whether students (1) maintained their incoming approach to study and conception of the discipline of biology, i.e. their ‘Learner Profile’ and (2) whether certain Learner Profiles were more persistent than others. Approximately half the student cohort did not alter their approach to study or conceptions of biology by semester's end. Students in the disengaged profile, i.e. who returned mostly negative responses to survey items, appeared the most resistant to changing their Learner Profile; while the greatest migration occurred towards less than desirable learning strategies (particularly to the disengaged profile). We were able to confirm the significant migration patterns by assessing the heterogeneity of each cluster at the start of semester clusters with respect to the students' approaches and conceptions at the end of semester. Thus we present a process to accurately track Learner Profile changes that may tell us more about how we can enhance students' learning and provide a means by which to gather the empirical data to support decisions relating to curriculum change.  相似文献   

A new route towards more harmonious intergroup relationships in England? Majority members’ proximal-acculturation     

《Int J Intercult Relat》2021

Although the ways that immigrants relate to UK culture has been a hot topic since the EU-referendum, little attention has been given to how majority group members such as Host Country Nationals (HCNs) relate to immigrants’ culture. Thus, we explored English HCNs’ globalisation-based proximal-acculturation – the extent to which they prefer to adopt aspects of immigrants’ cultures and/or maintain their national culture. Using two-step cluster analysis, a pilot study (N = 63) revealed a separated, integrated, and undifferentiated cluster, with separated HCNs perceiving cultural diversity more as a threat and less as an enrichment. Using latent profile analysis in a second study (N = 220) also revealed a three strategy-solution, identifying assimilated, integrated and separated profiles. Again we examined how these strategies differed across perceptions of cultural threat and enrichment as well as other psychosocial characteristics: identifying with fellow English citizens, recognizing cultural differences whilst not being culturally embedded (constructive marginalization), and various forms of intergroup contact. Separated HCNs identified more with fellow English citizens, endorsed less constructive marginalization, perceived less cultural enrichment yet more cultural threat than HCNs following some of the other strategies. These results stress that the onus of cultural adoption lies with both groups – minorities and majority members – with English HCNs showing distinct proximal-acculturation strategies. Lastly, when exploring a variable-centred approach, proximal-acculturation orientations (cultural maintenance/adoption) mediated the relationship between cultural threat, cultural enrichment, and intergroup contact on positive feelings towards immigrants. Thus, the ways that HCNs acculturate may provide a new route towards harmonious intergroup relations.  相似文献   

基于GIS的煤矿地质系统开发及应用     

崔军舰 《黑龙江科技信息》2010,(25):2-2

从煤矿的实际需求及GIS的特性出发,阐明了系统设计的总体流程、模块设计、系统开发组件与环境;着重对等值线及剖面图生成(钻孔见煤深度、软煤层厚的表面、平面和立体等值线以及剖面生成)做了介绍,并给出了系统功能界面。  相似文献   

Changes in mechanical properties of sprinting during repeated sprint in elite rugby sevens athletes     

Pedro Jiménez-Reyes  Matt Cross  Alex Ross  Pierre Samozino  Matt Brughelli  Nicholas Gill 《European Journal of Sport Science》2019,19(5):585-594

This study aimed to analyse fatigue-induced changes in mechanical sprinting properties during a specific repeated-sprint test in elite rugby sevens athletes. Twenty elite rugby sevens players performed ten 40?m sprints on a 30?s cycle with participant’s running back and forth in a marked lane. Radar was used to assess maximal overground sprint performance over each 40?m. Macroscopic mechanical properties (maximal horizontal force (F₀), maximal horizontal power (P_max), maximal ratio of horizontal force (RF_peak), decrease in the ratio of horizontal-to-total force (D_RF), total force and maximal sprinting velocity (v₀)) were drawn from horizontal force velocity relationships, using a validated method applied to the speed–time data. Fatigue-induced changes were analysed comparing the first sprint to an average of 2^nd-4^th, 5^th-7^th and 8^th-10^th. Repeated-sprint ability (RSA) testing induced substantial changes in the maximal velocity component, with a decrease (–15%) in v₀ (effect size (ES)?=?–2.46 to –4.98), and to a lower extent (–5.9%) in the maximal force component F₀ (ES?=?–0.59). D_RF moderately decreased (14%; ES=–0.76–1.11), and RF_peak largely decreased in the later sprints (ES?=?–0.32 to –1.27). Fatigue observed in this RSA test appeared to have a greater effect on the technical ability to produce horizontal force at high velocities, likely due to an alteration in the ability to maintain horizontally oriented force application when velocity increases rather than during the initial acceleration phase, but also the overall force production capacity. The ability to maintain forward-oriented force at high velocities is of central importance for identifying fatigue and monitoring load.  相似文献   

基于网络结构和文本内容的群体画像构建方法研究     

邱云飞  张伟竹 《图书情报工作》2019,63(22):21-30

[目的/意义] 在基于社会网络的用户画像研究中，针对传统用户建模难以处理复杂网络关系，群体构建多基于内容，以及群体相似度低或紧密性差的问题，提出基于网络结构和文本内容的群体画像构建方法。[方法/过程] 首先，采用卷积神经网络方法，融合网络结构和文本内容两方面特征将网络用户表示成空间向量，其次，在k-means算法基础上结合模块度计算方法，对空间向量进行聚类，然后，在爬取的中英文数据集上分别进行对比研究，最后，从中文数据集中选取1 000名重要性用户进行实例分析。[结果/结论] 实验结果表明，该方法的密度值比基于内容的方法平均增加0.105，熵值比基于结构（含基于结构和内容）的方法平均减少0.955，实例分析进一步说明文中方法的可行性。  相似文献   

Development and field validation of an omni-domain power-duration model     

Michael J. Puchowicz  Jonathan Baker 《Journal of sports sciences》2020,38(7):801-813

ABSTRACT

Purpose: To validate and compare a novel model based on the critical power (CP) concept that describes the entire domain of maximal mean power (MMP) data from cyclists.

Methods: An omni-domain power-duration (OmPD) model was derived whereby the rate of W? expenditure is bound by maximum sprint power and the power at prolonged durations declines from CP log-linearly. The three-parameter CP (3CP) and exponential (Exp) models were likewise extended with the log-linear decay function (Om3CP and OmExp). Each model bounds W? using a different nonconstant function, W?eff (effective W?). Models were fit to MMP data from nine cyclists who also completed four time-trials (TTs).

Results: The OmPD and Om3CP residuals (4 ± 1%) were smaller than the OmExp residuals (6 ± 2%; P < 0.001). W?eff predicted by the OmPD model was stable between 120–1,800 s, whereas it varied for the Om3CP and OmExp models. TT prediction errors were not different between models (7 ± 5%, 8 ± 5%, 7 ± 6%; P = 0.914).

Conclusion: The OmPD offers similar or superior goodness-of-fit and better theoretical properties compared to the other models, such that it best extends the CP concept to short-sprint and prolonged-endurance performance.  相似文献   

Using a Heuristic-Systematic Model to assess the Twitter user profile’s impact on disaster tweet credibility     

《International Journal of Information Management》2020

Journalists, emergency responders, and the general public use Twitter during disasters as an effective means to disseminate emergency information. However, there is a growing concern about the credibility of disaster tweets. This concern negatively influences Twitter users’ decisions about whether to retweet information, which can delay the dissemination of accurate—and sometimes essential—communications during a crisis. Although verifying information credibility is often a time-consuming task requiring considerable cognitive effort, researchers have yet to explore how people manage this task while using Twitter during disaster situations.To address this, we adopt the Heuristic-Systematic Model of information processing to understand how Twitter users make retweet decisions by categorizing tweet content as systematically processed information and a Twitter user’s profile as heuristically processed information. We then empirically examine tweet content and Twitter user profiles, as well as how they interact to verify the credibility of tweets collected during two disaster events: the 2011 Queensland floods, and the 2013 Colorado floods. Our empirical results suggest that using a Twitter profile as source-credibility information makes it easier for Twitter users to assess the credibility of disaster tweets. Our study also reveals that the Twitter user profile is a reliable source of credibility information and enhances our understanding of timely communication on Twitter during disasters.  相似文献