Role based access control design using Triadic concept analysis

Role based access control is one of the widely used access control models.There are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics,and Ontology for representing access control mechanism.However,while using FCA,investigations reported in the literature so far work on the logic that transforms the three dimensional access control matrix into dyadic formal contexts.This transformation is mainly to derive the formal concepts,lattice structure and implications to represent role hierarchy and constraints of RBAC.In this work,we propose a methodology that models RBAC using triadic FCA without transforming the triadic access control matrix into dyadic formal contexts.Our discussion is on two lines of inquiry.We present how triadic FCA can provide a suitable representation of RBAC policy and we demonstrate how this representation follows role hierarchy and constraints of RBAC on sample healthcare network available in the literature.

Gettysburg Address: Textual Analysis and Teaching Design

Grammar instruction takes an important role in language teaching in EFL context, and contextualized analysis of authentic texts can help learners better understand Larsen-Freeman's (2003) three dimensions—form, meaning and use of related grammatical features. This article will analyze Abraham Lincoln's Gettysburg Address (hereafter GA for short) in terms of tense/aspect, modality and cohesion, and briefly discuss how it could be used in teaching.

An Analysis of English Media Text Discourse:From the Perspective of Grammar Teaching

The aim of this essay is to explore several possible strategies that can facilitate the learners'grammatical competence development through the analysis of grammatical features of a media text and help to explore the potential of developing grammatical competence in language teaching context.

Discourse Competence Development in English Language Teaching: An Analysis of Media Text Discourse

This paper aims at exploring how the learners' discourse competence could be fully developed in second language acquisition facilitated by teachers through analysis of a piece of written discourse.

A Netnographic-Based Semantic Analysis of Tweet Contents for Stress Management

Social media platforms provide new value for markets and research companies.This article explores the use of social media data to enhance customer value propositions.The case study involves a company that develops wearable Internet of Things(IoT)devices and services for stress management.Netnography and semantic annotation for recognizing and categorizing the context of tweets are conducted to gain a better understanding of users’stress management practices.The aim is to analyze the tweets about stress management practices and to identify the context from the tweets.Thereafter,we map the tweets on pleasure and arousal to elicit customer insights.We analyzed a case study of a marketing strategy on the Twitter platform.Participants in the marketing campaign shared photos and texts about their stress management practices.Machine learning techniques were used to evaluate and estimate the emotions and contexts of the tweets posted by the campaign participants.The computational semantic analysis of the tweets was compared to the text analysis of the tweets.The content analysis of only tweet images resulted in 96%accuracy in detecting tweet context,while that of the textual content of tweets yielded an accuracy of 91%.Semantic tagging by Ontotext was able to detect correct tweet context with an accuracy of 50%.

A Functional Stylistic Analysis of“Do not Go Gentle into That Good Night”

As two main approaches to analyzing literary discourses,literary criticism and stylistic analysis have been employed for a long period of time.With the application of the theories of Functional Grammar,this paper is written for the purpose of being helpful for the readers of Dylan Thomas’poem“Do not Go Gentle into That Good Night”to understand the poem’s theme better as well as appreciate the artistic adaptation of language.Furthermore,because the poem is analyzed with the application of Functional Grammar,it helps the readers to appreciate“Do not Go Gentle into That Good Night”from a new perspective.

Logical inferences in discourse analysis

Cohesion and coherence are two important characteristics of discourses.Halliday and Hasan have pointed out that cohesion is the basis of coherence and coherence is the premise of forming discourse.The commonly used cohesive devices are:preference,ellipsis,substitution,etc.Discourse coherence is mainly manifested in sentences and paragraphs.However,in real discourse analysis environment,traditional methods on cohesion and coherence are not enough.This article talks about the conception of discourse analysis at the beginning.Then,we list some of the traditional cohesive devices and its uses.Following that,we make corpus analysis.Finally,we explore and find a new device in textual analysis:discourse logical inferences.

Context and Teaching of EFL Reading

Both linguistics and language teaching take language as their subject. Linguistics can provide language teaching with theories and language teaching can further prove the validity of linguistics. To some extent, linguistics is more theoretical while language teaching is more practical. Since linguistics is defined as the scientific study of language, it seems obvious that such a study would have direct relations to language teaching. This paper attempts to make an analysis of difference between Contextual theory of meaning and the teaching of EFL reading.

基于Context Graphs的主题爬虫的研究与实现

为了解决传统主题爬虫对主题网页搜索效率偏低的问题,分析了基于网络拓扑结构建模的Context Graphs的爬行策略。考虑了以往ContextGraphs方法存在的不足,即没有区分网页不同部分文本的重要程度,通过将锚文字、页面标题和页面内容做综合考虑,对原算法进行了改进。将改进前后的算法进行实验对比,实验结果表明,在提高主题爬行质量方面,改进后的算法达到了更好的效果。

Mortgage of Land Management Right in the Rural Area Under the Policy Context

The aim of this study is to explore the necessity to consider the specialty of policy context in ethnic minority area during the policymaking process.Case analysis is applied to study the policy context in microscopic aspect.The information came from two sources:questionnaires or phone calls,and related documents.Study suggested that the mortgage of land management lies in the negligence of temporal dynamic balance when it comes to the mastering of policy context.Optimal plan of method design was given in the end of this paper.

基于MCA和Context模型结合的磁共振图像去噪

在噪声污染的磁共振图像中,运用MCA和Context模型结合的算法进行处理,以达到尽可能完全滤除噪声的目的。该方法的主要思想是用MCA方法将图像分离成两个部分,分别采用二进小波和Context模型对这两部分进行处理。仿真实验结果表明,本方法是有效可用的,提高了图像的视觉效果,具有更高的PSNR值。

Geological Context and Statistical Assessment of the Impacts of Sugarloaf Twin Disasters, in Western Sierra Leone

In the event of natural disasters, Sierra Leone like any other country loses lives as well as properties and natural resources. Despite notable occurrences of small disasters in the country, only on August 14th sugarloaf landslide and the resulting flash flood (twin disasters) which affected Regent and other communities in 2017 have captured both national and international attention due to their alarming impacts. To obtain a better knowledge on the nature of the disasters, this research considered the geological context of the landslide and focused on statistical analysis of the impacts of the twin disasters using Statistical Package for Social Sciences (SPSS). Geological field-based approach and self-administered questionnaires of both closed and open-ended questions, personal interviews and observations were adopted as research techniques. Descriptive statistics and qualitative analysis were used to analyze the data of the research. Relevant literature from books, journals, and newspapers was also consulted, including Radio, Television discussions and the internet. Slope destabilization that caused the Landslide was linked to the geology of sub-surface formation (highly weathered olivine gabbro), lineaments and the rate of weathering. Study showed remarkable economic, social and political impacts as a consequence of the twin disasters. Study also revealed that families assisted the most in both financial and non-financial ways to the victims, and renowned misappropriation of donated disaster funds. All variables tested using student t-distribution and chi-square test of independence accepted the hypothesis. Information obtained from this work could be fundamental for policy makers and development practitioners (Osuteye & Leck, 2017).

Generic Framework for Context-Aware Communication Services in Visitor’s Guides

Ubiquitous computing plays an increasing role in our lives. Typically, applications in ubiquitous computing environ-ments are context aware, namely, they react to the situations of their users at a given moment in time. One example for such environment is visitor’s guides in cultural heritage sites, supporting visits of individuals or small groups, such as families or friends. In such environments, it is well known that interaction among visitors enhances the overall visit experience. Recently, some research prototypes of visitor’s guides have started supporting such interaction through textual communication services embedded in them. However, these applications have so far been developed separately in an ad-hoc manner, despite common features and infrastructures they share. The research described here generalizes communication services offered by different visitor’s guides and suggests a systematic and generic framework for developing context-aware communication services for visitor’s guides. The specific communication services are abstracted into a domain model, later used in practice for adapting and tailoring the different concepts to the specific requirements of the applications. The framework is demonstrated in the specific setting of a multi-agent museum visitor’s guide system. We also show that the suggested framework is not limited to the specific museum visitor’s guide system but may facilitate the development of context-aware communication applications in general.

Effectiveness of Context-Based Strategy for English Learning among Chinese Middle School Students

Currently,a growing number of educators are aware of the need to look for new approaches to replace the"spoon-feeding"method.Therefore,the context-based strategy began to emerge.This study aims to investigate how students derive information through contextual clues by examining the progress of Chinese middle school EFL students in terms of word recognition.The participants of this study included 20 eighth grade students from the same middle school.The participants sat for two different quizzes:a contextual vocabulary quiz(quiz A)and a direct instruction quiz(quiz B).In quiz A,the participants inferred the meaning of the target words from the example sentences,whereas in quiz B,the students utilized the accompanying English explanation to guess other new words.These students were in the experimental and control conditions,respectively.The two quizzes comprised of 15 multiple choice questions(MCQ)which differentiated the participants?word recognition response to two different learning methods.There were two significant findings from this study.First,the results showed that the context-based strategy leads to a better vocabulary learning performance compared to the direct instruction strategy.Second,although it is not as effective as the context-based strategy,the direct instruction strategy may assist EFL learners in remembering words in short term.

加快建设教育强国的语境分析与战略推进

新形势下,加快建设教育强国,要明确当前教育发展的战略语境,找准教育发展的现实起点,回应教育发展的主要矛盾,在战略上主动、在效果上现实地服务全面建设社会主义现代化国家的目标指向。要从多端多维加快建设教育强国,建设教育事业强国、教育服务强国、教育投入强国、教育治理强国、教育学术强国、教育生态强国。要明确加快建设教育强国的推进逻辑,坚持建设教育强国“双优先”的战略定位,同步提高教育投入水平与办学效率,高度重视教育的溢出效应与办学主体的激励相容,科学布局各级教育发展主导任务的价值位序,充分释放人人成才教育与英才教育的发展红利。

决策形式背景基于OE-协调性的属性约简

属性约简作为形式概念分析中非常重要的一个研究分支,在三支概念分析中也同样重要。基于对象导出三支概念格,提出了保持决策形式背景OE-协调性的属性约简理论,丰富了三支概念分析的约简理论。首先,定义了决策形式背景的OE-协调集和OE-约简,并将属性按其特征分为3类。其次,指出OE-约简的本质就是极小OE-协调集,给出了OE-协调集的几个判定定理,通过研究OE-协调集的充要条件,获取OE-约简的判定定理。最后,给出OE-差别矩阵和OE-差别函数的定义,并给出了利用OE-差别矩阵和OE-差别函数计算OE-约简的方法。

艺术设计专业英语文本语境分析教学法探析

在艺术设计专业院校中,专业英语课是专业课的一部分。而长期以来,其教学模式与专业的关联性不强,教学内容相对单一,学生的获得感弱。让专业英语课与艺术设计专业紧密结合,突破传统英语技能教学模式与应试思维,是专业英语教学改革的重点和难点。以为艺术设计学专业本科生开设的专业英语课为例,教学设计思路借鉴“价值形成模式”,形成以艺术文献为统摄、以专业术语为中心,以“印象―文本―语境―思辨”为内生逻辑的教学方法,以期有益于艺术设计学专业英语课程教学模式创新与改革。

中国宪法中“领导”的概念学诠释

要完全领会中国宪法中“领导”概念所承载的丰富内容与信息,就必须要借概念学的研究思维及方法才能满足。对“领导”概念作定义性理解应该强调“领导”的字本位与递归性,即“领导”的词义是“领”的字义与“导”的字义的结合与升华,“领导”的实质是对领导活动复杂意义的简化与归纳。对“领导”概念作入宪源由追问应该强调“领导”的主题性与理论链,即“领导”与人类解放的重大使命紧密结合,“领导”的思想与理想深嵌在社会主义制度体系之中。对“领导”概念作规范上的分析应该强调“领导”的语境性和意象性,即“领导”的文本意指受到语境条件的关涉与约束,语境的形象建构使“领导”由静态的表述转化为动态的画面。对“领导”概念作宪治意义的思考应该强调“领导”的描绘性和诠释性,即“领导”描绘或诠释了对中国宪法秩序有决定性影响的宪法事实,表征社会主义领导活动民主化、法治化的价值追求。

SITUATION ANALYSIS AND NEEDS ANALYSIS IN CHINESE EFL CONTEXT:A CASE OF A SENIOR HIGH SCHOOL IN SOUTH-WEST CHINA

Situation analysis and needs analysis are important tasks at the planning stage of curriculum design in most educational contexts, because they provide a basis for setting goals and objectives. Nevertheless, in Chinese EFL contexts, it is not uncommon that goal setting is managed around language outcomes which are prescribed by the teacher or teaching institution, without making reference to learners' needs and the larger context within which instruction takes place. This paper presents a piece of practical work by conducting a situation analysis and needs analysis in a senior high school in South-west China. In providing the rationale as well as the logistics and the outcomes of conducting the situation analysis and needs analysis, the paper attempts to illustrate a practical way to take account of learner factor and situational factors at the curriculum planning stage in Chinese EFL contexts, especially in the underdeveloped area of China.

基于立场分析的脱离上下文虚假信息检测方法

随着基于人工智能的自动生成技术的发展,虚假信息以更具欺骗性的形式出现,对经济和社会秩序造成了巨大危害。脱离上下文虚假信息是最具欺骗性和最容易实现的虚假信息类型之一,恶意攻击者通过歪曲真实图像中的人物、事件、地点等上下文信息来增强虚假叙事的可信度。针对已有检测算法严重依赖知识库、未能全面考虑待检测信息与互联网证据之间的立场关系的问题,提出了一种基于立场分析的脱离上下文虚假信息检测方法。对于需要检测的图像-标题对以及在互联网上检索到的文本证据与视觉证据,该方法根据标题与文本证据中命名实体的共现关系,为每条文本证据计算一个立场增益分数;使用互相独立的立场分析网络对图像与视觉证据、标题与文本证据分别进行层次聚类,并完成基于多个注意力机制与立场分析模块的语义立场表征抽取;根据语义比较与立场分析的结果对图像-标题对的真实性进行预测。实验结果表明,得益于立场分析的引入,所提方法能够显著提高检测效果,相比其他使用互联网证据进行检测的最佳算法准确率提升了2.3%。