• Title/Summary/Keyword: Logical Place

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Zero-Knowledge Realization of Software-Defined Gateway in Fog Computing

  • Lin, Te-Yuan;Fuh, Chiou-Shann
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.12
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    • pp.5654-5668
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    • 2018
  • Driven by security and real-time demands of Internet of Things (IoT), the timing of fog computing and edge computing have gradually come into place. Gateways bear more nearby computing, storage, analysis and as an intelligent broker of the whole computing lifecycle in between local devices and the remote cloud. In fog computing, the edge broker requires X-aware capabilities that combines software programmability, stream processing, hardware optimization and various connectivity to deal with such as security, data abstraction, network latency, service classification and workload allocation strategy. The prosperous of Field Programmable Gate Array (FPGA) pushes the possibility of gateway capabilities further landed. In this paper, we propose a software-defined gateway (SDG) scheme for fog computing paradigm termed as Fog Computing Zero-Knowledge Gateway that strengthens data protection and resilience merits designed for industrial internet of things or highly privacy concerned hybrid cloud scenarios. It is a proxy for fog nodes and able to integrate with existing commodity gateways. The contribution is that it converts Privacy-Enhancing Technologies rules into provable statements without knowing original sensitive data and guarantees privacy rules applied to the sensitive data before being propagated while preventing potential leakage threats. Some logical functions can be offloaded to any programmable micro-controller embedded to achieve higher computing efficiency.

Analytic study on Vertical Montage as expressed in Assoziation Montage -Focused on animation, Paprika- (연상 몽타주에서 나타난 수직적 몽타주 분석 -애니메이션 파프리카 중심으로-)

  • Lim, Woon-Joo
    • The Journal of the Korea Contents Association
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    • v.13 no.1
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    • pp.83-90
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    • 2013
  • This study attempts interpretation of vertical montage expressed in assoziation montage focused on animation, Paprika. Montage has been continuously studied by Pudovkin, Eisenstein, Jacques Aumont and others till now. However, existing studies focused on the visual image of montage. Image is made of visual element and aural element. These two interact with each other and maximize the effect. It is believed that the study subject can be approached in more depth, if aural elements would be analyzed based on the assoziation montage which analyzed visual image in previous studies. Accordingly, this study explores and analyzes how vertical montage has been used in logical montage and optical conflict montage and what meanings they generated. The analysis results suggested followings. In logical montage and optical conflict montage, vertical montage complemented visual image by natural concurrence as a whole. Vertical montage also showed linked relationship, which reflects overall emotion by melodious concurrence. In addition, when there was melodious concurrence at certain time, place or unclear space, the elements showed continuity which made them link with relationship. However, when the role that cuts that continuity, in other words, when the tonal element, which let audience partially immerse, would be properly used when the space and time would change or get reversed, the effect was maximized. It also expressed a turning point of an event and enhanced the concentration of audience on the characters.

A Study on the Mathematical Communication and Problem Solving Using Internet in Pattern (인터넷을 활용한 패턴 학습에서의 수학적 의사소통 및 문제해결에 관한 연구)

  • 류성림;박신정
    • School Mathematics
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    • v.5 no.4
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    • pp.459-476
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    • 2003
  • Internet was introduced to this study for making mathematics class the surroundings where students can solve the mathematics problems and communicate mathematically in a free way without restriction of time and place. With the intention of investigating mathematical communication and problem solving in mathematics education using internet, the objects of this study were determined as follows: First, how does a student express mathematical idea in problem solving using internet\ulcorner Second, is there any difference in the degree of participation of mathematical communication according to schoolwork accomplishment and characteristics of the student\ulcorner Third, what's the effect of class using internet on problem solving of mathematics class\ulcorner A case study was executed for the solution and the subjects were all students(44 persons) of a class in the fourth grade of elementary school in D city got into web-site of internet and had class with it and 8 students out of them were deeply analyzed. Their results were shown on internet, and eight of them had interview for deep research after survey with questionnaires for all of the students after class. The results and the conclusions of this study were as follows: First, it showed that there was various types(simple statement, fact enumerating, logical thinking, using letters and formula, insufficiency of explanation) of the mathematical idea expression in internet according to students and study using internet seems to be helpful to the improvement of logical his own expression through other students' expression. Second, it showed that there was difference in mathematical communication participation according to the student's characteristics and it helped students of poor schoolwork be interested and confident in mathematics. Third, it showed that pattern study using internet had effect on forming a habit of reason and verification in problem solving in mathematics class. Accordingly, pattern study using internet seems to have a positive effect on increasing mathematical interests and solving problems in mathematics class.

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The Access Point Placement Optimization of Wireless LAN in Indoor Environment (실내 환경에서 무선 LAN Access Point의 위치 설정 최적화)

  • Lim, Guk-Chan;Kang, Hun;Choi, Sung-Hoon;Lee, Hyon-Soo
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.39 no.9
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    • pp.1-11
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    • 2002
  • The optimal AP placement for wireless LAN is important factor for improving service quality and reducing cost. Decision of AP placement is depend on radio signal strength, environment factor and logical area property, which is user's frequently posed place. This paper proposes optimal multiple AP placement method based on radio prediction tool. The proposed method can get flexibility in multiple AP placement using user defined parameter and the optimization design uses Hopfield network algorithm. And path-loss model is used for one of radion prediction model. The result of simulation shows that it is efficiently reduces the process to find optimal AP placement. And the proposed optimization design of multiple AP placement can improve service quality for wireless LAN.

Inter-Process Testing of Parallel Programs based on Message Sequence Charts Specifications (MSC 명세에 기반한 병렬 프로그램의 프로세스 간 테스팅)

  • Bae, Hyun-Seop;Chung, In-Sang;Kim, Hyeon-Soo;Kwon, Yong-Rae;Chung, Young-Sik;Lee, Byung-Sun
    • Journal of KIISE:Software and Applications
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    • v.27 no.2
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    • pp.108-119
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    • 2000
  • Most of prior works on testing parallel programs have concentrated on how to guarantee the reproducibility by employing event traces exercised during executions of a program. Consequently, little work has been done to generate meaningful event sequences, especially, from specifications. This paper describes techniques for deriving event sequences from Message Sequence Charts(MSCs) which are widely used in telecommunication areas for its simplicity in specifying the behaviors of a program. For deriving event sequences from MSCs, we have to uncover the causality relations among events embedded implicitly in MSCs. In order to attain this goal, we adapt vector time stamping which has been previously used to determine the ordering of events taken place during an execution of interacting processes. Then, valid event sequences, satisfying the causality relations, are generated according to the interleaving rules suggested in this paper. The feasibility of our testing technique was investigated using the phone conversation example. In addition, we discussed on the experimental results gained from the example and how to combine various test criteria into our testing environment.

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Development on Real Time Diagnosis System for Enhancing Operability of e-Navigation Data Service Platform (한국형 e-Navigation 대용량 데이터 처리 플랫폼의 운용성 증대를 위한 실시간 원격진단시스템의 개발)

  • Kim, Myeong-hun;Kang, Moon-seog
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.05a
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    • pp.247-250
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    • 2018
  • The remote diagnostic system has been developed for enhancing operability of Data Service Platform(DSP) of Korean e-Navigation Project performed by Ministry of Oceans and Fisheries(MOF) since 2016. It plays a critical role to find and handling logical, physical error in early time in order to maximize operability of DSP, which makes DSP to provide seamless service to various ships voyaging in the sea. Therefore, as developing a system to diagnose resource and operation status of DSP immediately in a remote place, and a system to feed it back to operator or to recover it on its own, DSP can have short period of MTTR as well as high chance of providing proper service to ships in voyage.

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A Scientific Consideration of Military Thought (군사사상의 학문적 고찰)

  • Jin, Seok-Yong
    • Journal of National Security and Military Science
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    • s.7
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    • pp.1-24
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    • 2009
  • This article deals with military thought in general. First I tried to distinguish 'thought' from 'theory', 'philosophy', and 'principle'. Thought means the act of thinking about or considering something, an idea or opinion, or a set of ideas about a particular subject, e.g. military affairs in the present discussion. Theory means a formal statement of the rules on which a subject of study is based or of ideas which are suggested to explain a fact or event or, more generally, an opinion or explanation. Philosophy means the use of reason in understanding such things as the nature of reality and existence, the use and limits of knowledge. Principle means a basic idea or rule that explains or controls how something happens or works. Chapter 3 summarized the characteristics of military thoughts into five points', (i) it is closely related with concrete experiences of a nation; (ii) it includes philosophical and logical arguments; (iii) it relies heavily on the political thought of a nation; (iv) it includes necessarily value-judgments; (v) it contains visions of a nation which are not only descriptions or explanations of military affairs, but also evaluations and advocacies. Chapter 4 considers the relation of international political thoughts to military thought. Throughout the history of the modem states system there have been three competing traditions of thought: the Hobbesian or realist tradition, which views international politics as a state of war; the Kantian or universalist tradition, which sees at work in international politics a potential community of mankind; and the Grotian or internationalist tradition, which views international politics as taking place within an international society. Chapter 5 considers the law of war, which is a body of law concerning acceptable justifications to engage in war (jus ad bellum) and the limits to acceptable wartime conduct (jus in bello). Among other issues, modem laws of war address declarations of war, acceptance of surrender and the treatment of prisoners of war, military necessity along with distinction and proportionality, and the prohibition of certain weapons that may cause unnecessary suffering.

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A Study on the Main Characteristics and Factors of the Process of Beginning Egress during the Fire at the Buildings - Focus on Overseas Fire Cases including the Japanese - (건축물 화재 시 피난개시과정의 주요 특성 및 요소에 관한 연구 - 일본 등 해외 화재사례를 중심으로 -)

  • Park, Jae-Sung
    • Fire Science and Engineering
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    • v.26 no.2
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    • pp.59-68
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    • 2012
  • Predicting occupants' behaviors from the start of the fire to egress and reducing the time required for such process are critical matters that can decide success and failure of safe egress. In this research, research literatures and theories and fire cases were compared and analyzed so as to prepare logical grounds that could predict the process of beginning egress. As a result of this research, there was a significant difference in the time elapsed until people start evacuating due to spatial positions and quarantine from the place from which the fire originated and their auditive and olfactory signs did not recognize the fire instantly and they showed a strong tendency to recognize the fire by visual sign, warning announcement for egress and notice by others. And the results also showed that only a very small minority of occupants evacuated as soon as they perceived the fire and that variation in the time elapsed until evacuation begun for occupants were wider as the size of building was bigger and that accommodations such as hotel had wider variation in the time elapsed regardless of the size of buildings.

A Study on the Building of Integrated Service for Science and Technology Knowledge Infrastructure Supporting the Entire R&D Cycle (R&D 전주기 지원형 과학기술 지식인프라 통합서비스 구축에 관한 연구)

  • Lee, Seok Hyoung
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.31 no.3
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    • pp.235-256
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    • 2020
  • The purpose of this study is to define a method of building an integrated service to provide various science and technology knowledge infrastructures that are helpful in R&D activities, and to show the cases that are adapted the methodologies. Knowledge infrastructures scattered throughout the entire R&D cycle, such as generating/development of ideas, finding the R&D project, performing the project, and spreading results, are segmented in terms of services, functions, information, and data, and links and converges to provide the knowledge infrastructure that desired by users in one place. We define the integrated service classification, integration level model, integrated architecture, and integrated user authentication system in consideration of logical linkage and integration rather than physical integration of individual knowledge infrastructures. Also, we considered the extensibility as the reference model for building of similar integrated service.

A Study on Sexual Behavior and Attitudes among College Students in Seoul (일부대학생의 성의식 및 성행동에 관한 연구)

  • 문인옥
    • Korean Journal of Health Education and Promotion
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    • v.14 no.2
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    • pp.95-112
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    • 1997
  • This study examines knowledge, attitudes and behaviors toward sexual activity among 412 college students in Seoul. An 127-item questionnaire is used in order to understand and consider alcircumstances involved in decisions about sexual activity, and to reflect to the course on healthy sexuality. The major findings are as follows: 1. ‘Books/media’ and ‘friends’ are the primary source of sexual knowledge. 2. Despite the increased number of sxeducation programs, peers apparently remain the major source of information and the counsellor of the sexual problems(71.6%). 3. About ninety percent of males and 14.2 percent of females masurbate. Although mastubation is anormal response to pleasurable bodily feelings, students feel ‘unnatural’, ‘bad’ or ‘guilty’. 4. For some students, sexual intercourse is perceived as the natural outgrowth of love. More than thirty oercent of males and 8. 1 percent of females are engaged in inter -course. 5. Asking parents or teachers to be specific in talking about sex makes it uncomfortable to discuss sex. 6. Sex education should begin in the family and in school in early childhood and continue throughout life. 7. Sexual feelings and emotions are stirred up differently between male and female by sexual sensations. 8. Half of the intimate relationship with opposite sex shows a love relationship with sexual closeness and pleasure. Unguided reading or peers remain the primary source of information about topics like masurbation and sexual technique. Thus, schools should be responsible for the more value-laden subjects (such as birth control, homosexuality, and sexual techniques). And inclusionof a peer education componebt that modified college students' perceived peer norms may be the intervention method of choice. The prevention of health problems is far more desirable than treatment. The earlier the knowledge and skill to make healthful decisions are instilled, the greater the chance a healthful lifestyle will be adopted. School is the logical place in our society to provide the college students learning opportunities essential to developing the knowledge and skills to choose a healthful life course.

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