基于Petri网的微博网络信息传播模型

微博网络中的信息传播模型是分析用户行为，找出传播路径，确定领袖人物，发现舆情热点等研究的基础。虽然多种不同角度的信息传播模型已经得到广泛研究，但缺乏对信息动态传播过程的直观描述。本文基于Petri网的结构和特征，针对微博网络信息传播过程，提出了一种简单直观的描述模型，该模型首先对微博网络的信息动态传播过程中的对象进行结构化描述。本文根据微博网络的用户结构关系，并利用Petri网的相关理论，形式化解释和定义信息传播基本对象，从而更加直接描述了微博网络中的转发、评论、回复等多种用户行为。在此基础上，本文利用Petri网能够描述信息流动问题的特征，结合颜色Petri网和时延Petri网，从Petri网系统的角度表示信息动态传播路径，并研究网络的动态性质和传播条件，使得信息传播模型更加真实地模拟信息传播情况。最后本文分析信息传播算例和新浪微博真实数据实验，验证了模型的有效性和可行性，为舆情态势分析以及用户行为的研究提供帮助和支持，同时也为其它社交网络信息传播的用户行为描述提供了新的思路。     

一种嵌入式GUI软件结构实现方案

综合比较了嵌入式GUI的几种实现方式,结合嵌入式系统的特点,研究了嵌入式GUI中的关键技术,分析了嵌入式GUI与普通GUI系统的不同之处,提出一种通用的嵌入式图形用户界面系统的设计思想和体系结构,这种嵌入式GUI实现方案具有轻型、占用资源少、可剪裁等特点。     

一种基于Web的身份鉴别策略及其实现

介绍了Java服务端网页在IBM WebSphere平台上进行电子商务系统开发的相关原理和模型,提出了一种基于Web方式的用户身份鉴别策略,改进了以往在对用户身份鉴别时需要自己输入密码的方式。整个处理流程遵循J2EE规范,并贯穿了Web应用模式的三层体系结构,在存储过程中完成认证,这种方法对提高电子商务系统的安全性有一定的现实意义。     

论公物在中国人权保障中的作用

公物是大陆法系国家行政法上的一个重要概念,其范围正在逐步变化与扩张之中。公有的公物与私有的公物都是保障公民人权的重要物质基础。离开了它,不仅公民的平等权难以实现,公民的其他基本权利和自由的实现也将面临困难。这对于弱势人群来说尤其如此。我国目前在公物领域的立法采取的是分散立法模式,且有关公物的一般规则并没有在现有立法中得到体现,以致在设置、管理与利用公物中出现了一系列的问题。这些问题严重削弱了公物在人权保障方面的作用,因此尽快制定《公物管理基本法》就显得非常必要。     

我国工业电力用户价值画像模型构建与应用研究

在新型冠状病毒感染肺炎疫情对我国电力市场造成巨大冲击的宏观背景下,为进一步提升我国供电企业营销服务资源配置效能,最大化撬动供电企业的综合效益,笔者开展了我国工业电力用户价值画像模型研究。本文对电力用户价值进行了分析和定义,从安全稳定价值(S)、经济效益价值(E)、契约信用价值(C)与有序用电价值(O)四个维度,构建了我国工业电力用户价值评级SECO指标模型,并集成智能算法中的RST(粗糙集理论)与数据挖掘技术中的PAM(围绕中心点切割聚类算法),构造了一种半监督自动化用户价值识别、预测与特征展示模型,模型包括基于RST的指标体系设计、基于Gower相异度系数与PAM的用户价值评级,以及基于用户画像的价值特征展示三大模块。其中,为增强聚类分析结果的科学性与可靠性,采用霍普金斯统计量进行聚类趋势判断,利用间隔统计量输出理论最佳聚类数目,运用轮廓系数评估模型效果与识别误判样本。以我国南方电网公司下属某供电企业电力用户数据进行模型测试与应用研究,得到具有较高解释性与区分度的用户细分方案,表明本模型是一套可行有效的用户价值评级与特征可视化工具。     

企业用户云服务技术选择行为

如何选择最佳云服务方案,是企业决定采纳云服务之后所面临的一个重要决策。为了解决云服务技术选择问题,从业务流程的视角出发,以模块化系统理论为基础,提出一个流程模块化、IT可拆解性及安全风险如何影响云服务技术选择的研究模型。采用问卷调查和计量经济学的普通最小二乘法OLS进行实证分析。研究结果表明:流程模块化和IT可拆解性对云服务技术选择的抽象程度有显著的正向影响,即流程模块化程度IT可拆解性越高的企业,越倾向于选择抽象程度高的云服务,如软件即服务SaaS;而流程模块化程度和IT可拆解性越低的企业,越倾向于选择抽象程度低的云服务,如基础设施即服务IaaS。同时,安全风险会正向调节流程模块化和IT可拆解性对云服务技术选择的抽象程度的影响。     

Service user involvement in social work education: experiences from Germany and implications for a European perspective

ABSTRACT

Service user involvement (SUI) in social work education has gained widespread attention in Europe and other continents. Nevertheless, experiences on including service users in social work education have not been reported from Germany or other German-speaking countries to date. This paper reports preliminary experiences with implementing SUI in a bachelor’s programme of social work in a German University of Applied Sciences. The main goals of the current paper are (1) to provide a background for implementing service user approaches in Germany by introducing the structure of social work education in Germany; (2) to report experiences from a weekend seminar where service users worked together with students of social work in the framework of a curriculum of a German University of Applied Sciences and (3) to formulate some implications of these experiences for SUI across Europe. The main results were that introducing service user involvement into a German curriculum of social work is possible but needs careful reflection and planning. Experiences gathered in the weekend seminar with service users were encouraging for service users, students and teachers. We conclude that systematically implementing SUI into German curricula of social work is important.     

Mending the gaps in social work education and research: two examples from a Swedish context

ABSTRACT

The gap-mending concept is an analytical tool that helps teachers and researchers in social work to reflect upon what, in their practice, increases, maintains or mends gaps between professionals and service user groups. The article suggests a theoretical background on how gaps in social work practice can be challenged. This includes theories about power and recognition. It then moves on to describe the development of gap-mending strategies in research and education at the School of Social Work at Lund University. Lund University was one of three partners that took the initiative to the international network PowerUs that has focused on gap-mending strategies in social work education. The authors have been working over 10 years in collaboration with service user participation in the education of social workers and in different research projects. In the article, they give examples of gap-mending practices and of challenges that they have faced. The first example is an experimental course that has been given since 2005 where social work students study together with students from service user organizations in a university course. The second example is an attempt to combat homelessness in several Swedish municipalities. Supported by researchers, the development project has been a collaboration between homeless groups, politicians and social workers.     

Creativity in social work education and practice: reflections on a Survivor Arts Project

This article, written by survivor artists, practitioners and academics (each moving between these different identities and associated voices), will explore a creative arts approach to social work (SW) education within the context of service user and carer involvement. In addition to building upon a developing literature base, the writers will draw upon their own experience and the experience of other service user and carer contributors as well as student and practitioner feedback. In doing so, this article will seek to analyse some of the ways the creative arts can be harnessed as a tool for a more radical, creative and critical approach to professional education and how this in turn can help develop more empathic, critically self-reflective and creative (in the broadest sense of the word) practitioners. In critiquing the more traditional service user and carer involvement approach, this article will attempt to show how the more innovative approach of the Survivor Arts Project can move us beyond an arguably more limiting ‘expertise through experience’ model. In outlining an emancipatory model which recognises the relevance of lived experience and places this within the context of survivor movements, focusing also on the skills and insights survivors bring to SW education, this article will detail the ways we can work towards developing a more vibrant and dynamic learning environment which values our life stories and recognises our strengths as well as the many different and overlapping identities which place us along a continuum that connects our lives and informs our practice.     

Research initiation based on idea-circles: from research object to co-actor

This article details an evaluation of a research project based on participatory research methods organized by the Swedish Disability Federation from 2008 to 2011. In Sweden there has been a lack of productive dialogue with the traditional academic world and the question was raised whether proposals for future research would be different if disabled people formulated them. Nine idea-circles with disabled participants and invited researchers from fields of interest close to the participants produced ideas, developed out of the life experience of being a disabled person. These ideas were developed into 72 research drafts that often reflected key advocacy areas, rather than operationalized research issues. The adjustment from the familiar discourse of political struggle to discussion of research was a complicated process for many. When asked to prioritize among areas for research, the representatives from the disability movement chose areas that are not stressed in mainstream disability research in Sweden.