Unless you go online you are on your own: blogging as a bridge in para-sport

Since its inception, the Web has been described as a liberating technology permitting individuals with disabilities to surmount barriers that otherwise prevent full societal engagement. Subsequent studies of Web-based communication have instead reported that disabling conditions are reproduced rather than challenged online. This paper uses interviews with 25 para-sport participants to provide an empirical account of how the affordances of the Web are leveraged in disability sport networks. Our findings suggest that individuals with disabilities are using blogs, Facebook, Twitter, and other forms of online communication to find information, engage in advocacy and outreach projects, and form strong networks that extend online and offline. We discuss our findings in light of Putnam’s conceptualization of bridging and bonding social capital, and describe how individuals and groups use weak ties to disseminate information and strong ties to foster a sense of belonging.     

基于ANSYS的弹性支承的悬臂转盘-轴承系统模态分析

针对悬臂转盘系统在高速旋转时的振动、不稳定等现象,建立弹性支承悬臂转盘一轴承系统动力学模型并计算理 论临界转速,应用ANSYS有限元软件对带有预应力的转盘一轴承系统进行了模态分析,分析转盘系统额定转速、轴承支 承刚度、轴承间跨度和转盘厚度对转盘一轴承系统固有频率的影响,得到了各阶固有频率和固有振型。结果显示：额定转 速和轴承支承刚度是影响转盘一轴承系统模态参数的主要因素,在相同工况条件下,同阶固有频率与额定转速成一元三 次方程变化。同时转盘系统固有频率都随着额定转速和轴承支承刚度的增大而增大。     

民营企业对外直接投资决策内部影响因素——基于温州微观层面企业数据的实证研究

文章聚焦于民营企业对外直接投资决策的内部影响因素,通过匹配温州市商务局的民营企业对外直接投资信息和《中国工业企业数据库》中温州民营企业的微观数据发现,对外直接投资的民营企业和非对外直接投资的民营企业存在较大的内部差异.进一步地,通过构建二值选择模型进行的实证研究发现,企业规模和出口倾向是民营企业对发达国家(地区)和发展中国家(地区)进行对外直接投资决策的共同正向影响因素;而在民营企业对发展中国家(地区)的对外直接投资决策中,生产率和技术能力也是正向影响因素,企业内部管理效率则是负向影响因素.这种差异产生的原因在于,民营企业对发达国家(地区)和发展中国家(地区)进行对外直接投资的动机不同.     

新型全电动式注塑机直拉式电动射移机构

采用射移丝杠安装于机架方式的全电动式注塑机电动射移机构,易造成推力块的力臂结构长度过长。当喷嘴顶 靠于模具时,由于过大偏载力矩的作用而产生上翘现象。针对性地设计开发了新型直拉式电动射移机构。该机构将注 射单元通过直拉式射移机构直拉于定模板上,大大减小了全电动式注塑机射移力系的封闭回路里出力机构的射移丝杠 中心线与机筒中心线的距离,使机架不再需要承受原有设计由于射移最终阶段喷嘴顶紧模具浇口产生的顶靠力,从而大 大改善了射移机构和喷嘴的受力情况,同时也简化了机架结构,进而减轻了机架的结构重量。     

Live tweeting and building the digital archive; #NFQLR – who and what is it for?

This paper examines the temporal and ethical affordances of commercial social media platforms, such as Twitter, as tools for engaging in social research and knowledge exchange. Drawing on activity that took place during the New Frontiers in Qualitative Longitudinal Research seminar series, the article reports on using Twitter and other social media platforms to document, share and archive ‘data’ from a series of research events. It also experiments with new modes of research writing, using fragments of ‘data’ from Twitter to distil research knowledge and ideas, whilst also capturing the pace and form of this live method of social documentation and knowledge exchange. Bringing together conversations within digital sociology about how to ‘do’ time in digital research, with methodological debates among qualitative longitudinal researchers about how to research social and biographical continuity and change, the paper argues that the presentist focus in digital research is far from inevitable. Attending to time in digital media demands that we are alert to questions of authorship, audience and co-production, recognizing the labour of research and the provenance of research knowledge, ‘data’ and ideas.     

Privacy with public access: digital memorials on quick response codes

Quick response (QR) codes on gravestones are a relatively new global phenomenon, and the actual number of them is unknown. The placement of a digital gateway on a physical stone is a new form of mediated middle region and a challenge to the classic public–private dichotomy, and this study discusses in detail the implications of the QR-coded gravestones. While some cemetery visitors might consider the gravestone and the digital content private, the visible QR code is also an invitation to the broader public in the shared physical space. Building on privacy as a contextualized matter, the business interests of gravestone makers as well as 30 Danish memorials are analyzed. In a general shift toward the digital in contemporary memorial culture and a growing tendency to online sharing of the emotionally important, QR codes on gravestones are but one example of the ongoing negotiations of privacy and sharing in our digital society.     

Reclaiming,proclaiming, and maintaining collective identity in the #YoSoy132 movement in Mexico: an examination of digital frontstage and backstage activism through social media and instant messaging platforms

This article starts from the recognition that digital social movements studies have progressively disregarded collective identity and the importance of internal communicative dynamics in contemporary social movements, in favour of the study of the technological affordances and the organizational capabilities of social media. Based on a two-year multimodal ethnography of the Mexican #YoSoy132 movement, the article demonstrates that the concept of collective identity is still able to yield relevant insights into the study of current movements, especially in connection with the use of social media platforms. Through the appropriations of social media, Mexican students were able to oppose the negative identification fabricated by the PRI party, reclaim their agency and their role as heirs of a long tradition of rebellion, generate collective identification processes, and find ‘comfort zones’ to lower the costs of activism, reinforcing their internal cohesion and solidarity. The article stresses the importance of the internal communicative dynamics that develop in the backstage of social media (Facebook chats and groups) and through instant messaging services (WhatsApp), thus rediscovering the pivotal linkage between collective identity and internal communication that characterized the first wave of research on digital social movements. The findings point out how that internal cohesion and collective identity are fundamentally shaped and reinforced in the social media backstage by practices of ‘ludic activism’, which indicates that social media represent not only the organizational backbone of contemporary social movements, but also multifaceted ecologies where a new, expressive and humorous ‘communicative resistance grammar’ emerges.     

‘I don't have anything to hide,but … ': the challenges and negotiations of social and mobile media privacy for non-dominant youth

Drawing from interviews and focus groups with teens in a low-income and ethnically diverse high school in central Texas, this paper explores the unique social privacy challenges and strategies of low-income and non-dominant youth. Situating the research in a broader context in which non-dominant teens are increasingly surveilled, I demonstrate how teens manage social privacy in at least three ways. First, they negotiate liminal boundaries of what constitutes a communal or shareable mobile device, which are structured around financial constraints. Second, through nonuse, they actively resist the ways mobile and social media reconfigure social and physical spaces. Third, they deliberately use multiple platforms as a way to cope with evolving privacy settings, social norms, and technological affordances; this is a deliberate strategy intended to resist social convergence. Because low-income and non-dominant youth are increasingly surveilled by adults, peers, and institutions, it is imperative that they find spaces that afford greater freedom of expression, interest-based communities, and privacy.     

麻黄人工栽培试验研究

通过几年的连续试验，摸索出一套人工栽培麻黄的技术。麻黄虽然无性繁殖能力很强，但大面积栽培还应以种子繁殖为主，而育苗移栽优于大田直播，在野生资源日趋枯竭的情况下，必须走野生变人工栽培的路子。     

西藏农牧区数字鸿沟与电信发展问题研究

文章从电信通信为农牧区提供信息接入手段这一视角出发,分析西藏农牧区发展电信、消除数字鸿沟的实践,探究农牧区数字鸿沟的表现及成因,认为发展电信通信是缩小西藏农牧区数字鸿沟的基础工程,政府主管部门应制定针对数字鸿沟的农牧区电信发展经济、技术政策,遵循普遍服务原则,沿着基础设施建设和基础信息提供两条主线,保证为农牧民提供最低数量和基本质量的信息服务。