The balancing act of social enterprise: An IT emergence perspective

The significance of IT in the context of non-digital social enterprises (SEs) and its influence on the viability of such SEs have been less studied themes in information systems research. In the era of ubiquitous IT, SEs have increasing pressures to cope with the ever-dynamic technological domain while balancing their dual objectives. Data from a single revelatory case of Jaipur Rugs (JR), an SE situated in a developing country context (India), is used to fathom the peculiarities of the SE context with a focus on the sociomaterial phenomena of IT emergence. Using the three fundamental notions of sociomateriality theory (relationality, performativity, and practice) this interpretive study understands the mechanisms underlying the SE’s attempt to balance its financial and social sustainability objectives. Through the innovative use of IT, the SE establishes and maintains shared value, yielding stability and efficiency to the business (financial viability) while simultaneously ensuring scalability and effectiveness of their social impact. This study strengthens the perspective of IT as an emergent phenomenon situated in sociomaterial practices and fills a gap in organizational literature by examining such phenomenon in the rich context of SEs where achieving the balance between dual goals is increasingly dependent on non-human (IT) agents.     

S变换与小波变换检测信号突变性研究

时间局部谱分析方法的研究对信号突变性检测具有重要意义。S变换是加窗傅里叶变换和连续小波变换思想的延伸或推广,S变换保持了与傅里叶谱的直接联系,提供了依赖于频率的分辨率,具有连续小波变换所没有的一些特点。介绍了S变换和广义S变换的数学原理,分析了S变换与加窗傅里叶变换和小波变换之间的关系,对一个突变信号在S变换与小波变换下的表现特征进行研究,结果表明,S变换能比小波变换更直观更清楚地表现信号突变位置。     

现代图书馆服务公共与产业属性之界定

当公共需求和责任被演变升华为具有普世价值的人权和使命时,图书馆服务就被嵌入了承载社会公共意志的特质--这就是它的公共属性.图书馆服务不同时代的公共目标与社会责任是其公共属性的现实表达.剥离公共属性的图书馆服务具有与产业性服务相同的服务行为特征和可产生经济效益的能质.从图书馆服务的双重属性出发,我们就可以包容进现代服务理论(如服务营销与服务管理等)来指导图书馆服务实践,并为其理论研究带来更为宽泛的基础和视角.现代图书馆事业一定程度上是在其服务的公共与产业属性不断交替的演进中发展的.     

数据格式转换软件的设计与实现

总结了在信息检索与信息分析的中间环节数据格式转换中存在的困难,并结合文本文件、Word软件、VC++编程以及EXCEL软件各自特殊功能,设计了一套较为通用、简单的数据转换程序,开发了一个简单实用的小软件,并介绍了软件的使用方法和实现算法。     

基于印刷与电子索引工具的文献双检策略——以“高师学生心理素质研究”项目为例

双检策略,是指同时采用印刷本和电子数据库两种索引工具来完成同一课题文献检索的方法。其做法是根据课题内容要求,选择合适的检索工具,分别采用其纸印本和光盘或网络版,进行文献检索,并对其结果进行分析、选择。双检策略不仅能保证文献查询全面、准确,而且能保证质量,利于科研。参考文献6。     

格氏试剂在有机合成中的应用

格氏试剂是有机金属化合物中重要的一类化合物,也是有机合成上的非常重要的试剂之一,应用广泛.格氏试剂与不同的物质反应,可以合成烃类、醇类、酮类、醛类、羧类及金属有机化合物等.     

New insights into brazilwood lake pigments manufacture through the use of historically accurate reconstructions

A multi-analytical approach for the study of brazilwood and its lake pigments was carried out based on historically accurate reconstructions. Recipes for brazilwood lakes from the fifteenth century technical text Livro de como se fazem as cores and the Winsor & Newton nineteenth century colourman's archive were reproduced and compared. Both primary sources allowed for the successful preparation of brazilwood lake pigments with colours that vary from light pink to dark red. The main steps and ingredients for the manufacture of these pigments were common in both sources, particularly the addition of Al³⁺ in the form of alum, and calcium carbonate (chalk). Reconstructions revealed that the latter acts as a pH buffer and filler, controlling the pH at which the lake pigment precipitates. The main difference between the two sources is that the nineteenth century recipes give the quantities for all ingredients, the precise temperatures and time, and achieved higher relative pigment yields (75% versus 45%). Full chemical characterisation of the reconstructions provided detailed information on the individual steps in the pigment manufacture and revealed that the presence of calcium sulphate dihydrate (gypsum) in the final pigment was a result of its formation in situ. Infrared, reflectance, and fluorescence spectroscopy proved to be essential and complementary techniques: while infrared was used to characterise additives and binders, reflectance and fluorescence data were fundamental for identifying the chromophore. The pigments and paints produced can now be used as standards for the identification and investigation of brazilwood lake pigments found in artworks.     

Do Individual Perceptions Matter in Pornography Effects? How Perceived General Acceptance and Influence of Pornography May Impact Agreement With Sex-Role Attitudes

Pornography use is often associated with less-progressive sex-role attitudes, such as endorsement of a sexual double standard between heterosexual partners, but the process by which this relationship occurs is still largely unexamined. The present study was conducted to examine how perceptions about pornography may play a role in the relationship between pornography use and sex-role attitudes. Perceived general acceptance and perceived influence of pornography on most people partially mediated the relationship between pornography use and sex-role attitudes. The more participants reported using pornography, the more they believed pornography was generally accepted and had a positive influence; however, conversely to what was hypothesized, the more positive they perceived pornography’s influence, the less likely they were to report sex-role attitudes that endorse a sexual double standard.     

Ott循环中温度的Lorentz变换

在介绍汤川秀树理想实验的基础上，指出其存在的不足，并对其进行修正，从而再次得到运动参考系中物体温度降低的P—E理论结论。     

单片机测控系统中P3口的双重使用

MCS－51系列单片机的P3口是一个双功能口，具有特殊性。当T0口（P3．4）或T1口（P3．5）作为内部定时器使用时，其口线还可作为通用输入／输出口使用。章对单片机P3口的定时器／计时器口的双重使用方法，从原理上作了详细分析，并介绍了其在真空压强、测量仪中的实际应用。解决了单片机自身口资源有限的矛盾。