国外网络搜索引擎优秀资源现状述评——搜索引擎网站、论坛、新闻和学术会议资源

从优秀搜索引擎、搜索引擎网站、搜索引擎论坛、搜索引擎新闻和搜索引擎会议等方面入手,对国外现有论述搜索引擎的主要资源、种类、性能和特色进行了述评.在此基础上,推荐有关搜索引擎的最佳资源,为人们学习掌握搜索引擎的资源、搜索技巧、方法和优化检索策略提供参考资料和学习途径.     

Social network sites and acculturation of international sojourners in the Netherlands: The mediating role of psychological alienation and online social support

Acculturation of short-term international sojourners, such as expats and international students, has received considerable attention from scholars in the past decades. Acculturation is commonly defined as the interplay between cultural maintenance, the sojourner’s desire to maintain their home culture identity, and host country participation, their desire to initiate contact with members of the host society. The present paper focuses on the role that Social Network Sites (SNS) play in the acculturation process of this group. Through a survey, we examined how 126 short-term sojourners in the Netherlands use SNS to interact with relations in both home and host country, and how this affects their cultural maintenance and host country participation. Furthermore, we examined psychological alienation and online social support as possible mediators. Our results show that on the one hand SNS contact with home country relations is positively related to online social support. On the other hand, it is also related to psychological alienation, which in turn is related to cultural maintenance. This shows that sojourners who keep in touch with friends and family at home also experience more loneliness and homesickness, and place more emphasis on their own cultural heritage. Finally, we found that SNS contact with host country relations predicts host country participation. Through online activities, sojourners are able to foster social interaction and strengthen friendships with locals.     

Combining the travel cost and contingent behavior methods to value cultural heritage sites: Evidence from Armenia

This paper combines the travel cost method (TCM) with contingent behavior questions to estimate domestic visitors’ use values for cultural heritage sites in Armenia, a transition economy in which conservation of cultural monuments is hampered by limited resources. Respondents intercepted at four cultural monuments provided information on their visitation patterns, experience at the site, perception of the state of conservation of the monuments, and rating of the quality of the services and infrastructure. We combine actual trips with stated trips under hypothetical programs that would enhance the conservation of the monuments and improve one of (i) the cultural experience at the site, (ii) the quality of the infrastructure, or (iii) the quality of the services, and use the combined actual and stated trips to fit a panel data model. Our study is one of the few applications of the TCM to value cultural heritage sites. Our investigation shows that (i) significant use values are associated with the four study monuments, and (ii) conservation programs and initiatives that improve the cultural experience, or simply make it easier for the respondent to reach and spend time at the monument, are valued by domestic visitors and would encourage higher visitation rates. Actual and intended trips reported by the respondents exhibit good construct validity, in the sense that they are well predicted by price, location, hypothetical scenario and other individual characteristics of the respondents.

科研人员在线社交网络使用行为研究综述

[目的/意义]归纳总结科研人员在线社交网络使用行为研究现状,提出值得关注的问题,为进一步深入研究提供参考。[方法/过程]通过关键词检索和引文追溯两步骤的文献收集方法系统收集国内外相关文献,对文献进行系统阅读、分析,归纳研究主题,并进行论述。[结果/结论]将收集到的63篇文献按照其研究主题,归纳为用于科研目的的在线社交网络功能与分类、科研人员在线社交网络使用的人口统计学特征研究、使用动机研究、内容创建和获取行为研究以及群体行为研究。认为未来深入研究可以从在线社交网络科研过程嵌入机理、基于全局数据的行为规律研究、持续使用机制及信息服务系统改进实证研究4个方面进行。     

Bio-inspired low-tortuosity carbon host for high-performance lithium-metal anode

Lithium metal is one of the most promising anode materials for high-energy-density Li batteries. However, low stability caused by dendrite growth and volume change during cycling hinders its practical application. Herein, we report an ingenious design of bio-inspired low-tortuosity carbon with tunable vertical micro-channels to be used as a host to incorporate nanosized Sn/Ni alloy nucleation sites, which can guide Li metal''s plating/stripping and meanwhile accommodate the volume change. The pore sizes of the vertical channels of the carbon host can be regulated to investigate the structure–performance correlation. After compositing Li, the bio-inspired carbon host with the smallest pore size (∼14 μm) of vertical channels exhibits the lowest overpotential (∼18 mV at 1 mA cm⁻²), most stable tripping/plating voltage profiles, and best cycling stability (up to 500 cycles) in symmetrical cells. Notably, the carbon/Li composite anode is more rewarding than Li foil when coupled with LiFePO₄ in full cells, exhibiting a much lower polarization effect, better rate capability and higher capacity retention (90.6% after 120 cycles). This novel bio-inspired design of a low-tortuosity carbon host with nanoalloy coatings may open a new avenue for fabricating advanced Li-metal batteries with high performance.     

Exploring trust in online health information: a study of user experiences of patients.co.uk

This feature has been co‐authored by Anna Cunningham and her supervisor Frances Johnson. It is based on the research Anna conducted for her dissertation, which she completed as part of her MA in Library and Information Management at Manchester Metropolitan University. The study explored how people assess the trustworthiness of online health information, and the participants were asked to talk aloud whilst viewing information on the consumer health information website patients.co.uk. The study confirmed that their assessment was based on the information usefulness and credibility as well as identifying the factors relating to information quality and website design that helped to form these judgements. A. M.     

Antecedents of Incidental News Exposure: The Role of Media Preference,Use and Trust

ABSTRACT

The online environment has radically changed the way in which users consume, discover and manipulate news. The growing relevance of social media platforms and digital intermediaries for news sharing and consumption increase the likelihood of citizens to be exposed to online news even when they are not seeking it. This digital transformation fundamentally challenges the way online news use and exposure have been conceptualized and measured, affecting also to citizens’ knowledge about public affairs and politics. This article examines the factors that predict the probability to be an “incidentally exposed news user” online. Specifically, based on a representative US sample from the Pew Research Centre, this study analyses the role of media preference, use and trust. Findings indicate that beyond users’ demographics and loyalty, readers’ news preferences, uses and trust, specially of social media platforms, affect their probability to be incidentally exposed to news online. These results have important empirical and theoretical implications for understanding the connection between readers’ news consumption patterns and online exposure, intentional or incidental.     

Understanding envy and users’ responses to envy in the context of social networking sites: A literature review

Envy is an ancient theme of interest and various academic disciplines researched the topic in the last decades. With the advance of technologies and the popularity of social networking sites (SNSs), there is a need to comprehend what is new and unique about envy in the SNS environment. To contribute to an improved understanding of this phenomenon, we investigate academic research on envy in the context of SNSs. Particularly, in this work, we review and clarify the concept of envy in the SNS context and how users respond to envy they experienced in an SNS environment. This allows us to (1) better comprehend the conceptualization and theorization of envy in the SNS context, and to (2) identify particularities of users’ responses to envy. Based on our analysis, we observe that there exists a need to contextualize definition, operationalization and theorization further. Responses to SNS-induced envy mirror findings from the offline context with purchase intentions as an interesting and relevant behavioral response for the SNS context, since most revenues are generated by advertisement on these sites. We provide directions for future investigations on the phenomenon of SNS-induced envy.     

龙陵松山发展抗战遗址旅游的SWOT分析与对策探究

松山之战是滇西抗战中著名的大战之一。如今的松山战役遗址内,仍保存着当年丰富的战争遗迹,它们见证了滇西抗战的悲壮,是我们今天进行爱国主义教育的活教材。通过对龙陵松山抗日战争遗址旅游资源的SWOT分析,提出龙陵松山开发战争主题旅游资源,形成独特的战争品牌旅游产品的对策。     

颜色词“红”的中英使用差异及文化内涵简析

本文从汉语颜色词＂红＂的基本释义入手,总结了＂红色＂在汉语中的多种用法及文化内涵,并分析了中英两种语言中对＂红色（red）＂一词的使用对比,进而阐述颜色词＂红＂和文化的联系。本文针对中英语言中对＂红＂作为颜色词进行的比较,故对＂红＂作为颜色词之外的其他意义不作考察。