• Title/Summary/Keyword: Comprehensive approach

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Fuzzy Controller Design by Means of Genetic Optimization and NFN-Based Estimation Technique

  • Oh, Sung-Kwun;Park, Seok-Beom;Kim, Hyun-Ki
    • International Journal of Control, Automation, and Systems
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    • v.2 no.3
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    • pp.362-373
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    • 2004
  • In this study, we introduce a noble neurogenetic approach to the design of the fuzzy controller. The design procedure dwells on the use of Computational Intelligence (CI), namely genetic algorithms and neurofuzzy networks (NFN). The crux of the design methodology is based on the selection and determination of optimal values of the scaling factors of the fuzzy controllers, which are essential to the entire optimization process. First, tuning of the scaling factors of the fuzzy controller is carried out, and then the development of a nonlinear mapping for the scaling factors is realized by using GA based NFN. The developed approach is applied to an inverted pendulum nonlinear system where we show the results of comprehensive numerical studies and carry out a detailed comparative analysis.

A Study of Debates on and Enforcement of the National Basic Livelihood Act (국민기초생활보장법 제정의 쟁점과 운영방안에 관한 연구)

  • Moon, Jin-Young
    • Korean Journal of Social Welfare
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    • v.38
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    • pp.100-125
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    • 1999
  • As economic crisis has deepened mass unemployment and widespread destitution since the end of 1997, the Korean society is now underway of social disorganisation. It is thus widely accepted that National Basic Livelihood Programme, which reformed the existing public assistance programme, is urgently needed to relieve low-income families from extreme poverty. It is in this regard that this paper purports to review the debates on, and to suggest the feasible schemes for the National Basic Livelihood Programme. For this purpose, chapter two critically reviews government's comprehensive counter-measures against mass unemployment, and chapter three examines main points of the National Basic Livelihood Act. Chapter four compares "programme-centrad approach" and "basic living approach", and duly suggests feasible schemes for the National Basic Livelihood Programme.

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A novel story on rock slope reliability, by an initiative model that incorporated the harmony of damage, probability and fuzziness

  • Wang, Yajun
    • Geomechanics and Engineering
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    • v.12 no.2
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    • pp.269-294
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    • 2017
  • This study aimed to realize the creation of fuzzy stochastic damage to describe reliability more essentially with the analysis of harmony of damage conception, probability and fuzzy degree of membership in interval [0,1]. Two kinds of fuzzy behaviors of damage development were deduced. Fuzzy stochastic damage models were established based on the fuzzy memberships functional and equivalent normalization theory. Fuzzy stochastic damage finite element method was developed as the approach to reliability simulation. The three-dimensional fuzzy stochastic damage mechanical behaviors of Jianshan mine slope were analyzed and examined based on this approach. The comprehensive results, including the displacement, stress, damage and their stochastic characteristics, indicate consistently that the failure foci of Jianshan mine slope are the slope-cutting areas where, with the maximal failure probability 40%, the hazardous Domino effects will motivate the neighboring rock bodies' sliding activities.

An Ergonomics Approach for Developing Korean Style Chiropractic Table (한국형 척추교정기의 개발을 위한 인간공학적 접근)

  • 정화식
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.22 no.52
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    • pp.323-335
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    • 1999
  • Spinal injuries are common these days and are increasing due to the increasing sports activities, auto-related accidents, and occupational incidences. Most of spinal injuries of strain and sprain are associated with trauma and resulted in loss of optimal musculoskeletal system in spinal column area. Some of these injuries requires surgical treatments. Fortunately, some people with spinal disorder are achieving outstanding results with the chiropractic care which utilizes muscle stimulation and strengthening, traction therapy, and spinal adjustments. These treatments using chiropractic table can ease pain by restoring alignment, improving mobility, and relieving pain and stiffness in neck and spinal areas. The purpose of this study was thus to gather the comprehensive information about spinal injuries, to define the specific dimensions, and to recommend functions of chiropractic table specially suited for Korean. This study was an integrated approach in applying the concepts of biomechanical correction of the musculoskeletal system. Also, this study was to utilize a knowledge of physics, ergonomics, and rehabilitation to the development of spine cure medicine.

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Determination of THRs - A Practical Approach for Manufacturers According to EN50129

  • Weber, Ulrich
    • Journal of the Korean Society for Railway
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    • v.16 no.2
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    • pp.104-109
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    • 2013
  • The paper will outline how hazard identification and risk evaluation can effectively be performed to obtain Tolerable Hazard Rates (THR). As a target group manufacturers are addressed, who face the situation, that for a generic application THRs are needed for compliance with EN 50129 [1]. Focusing on functional hazards this paper shows a possible hazard log and the relevant analysis methods. The terms safety barrier and barrier function will be introduced and used instead of the term "safety function". As functional hazards and barrier functions depend on each other, emphasis will be put on a comprehensive and detailed definition of barrier functions and the usage of function lists. By using detailed and complete hazard and barrier function definitions THRs can be obtained while at the same time the approach becomes clear how the hazard rates (HR) will be established.

Evolutionary Design of a Fuzzy Logic Controller for Multi-Agent Systems

  • Jeong, Il-Kwon;Lee, Ju-Jang
    • 제어로봇시스템학회:학술대회논문집
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    • 1998.10a
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    • pp.507-512
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    • 1998
  • It is an interesting area in the field of artificial intelligence to and an analytic model of cooperative structure for multi-agent system accomplishing a given task. Usually it is difficult to design controllers for multi-agent systems without a comprehensive knowledge about the system. One of the way to overcome this limitation is to implement an evolutionary approach to design the controllers. This paper introduces the use of a genetic algorithm to discover a fuzzy logic controller with rules that govern emergent co-operative behavior: A modified genetic algorithm was applied to automating the discovery of a fuzzy logic controller jot multi-agents playing a pursuit game. Simulation results indicate that, given the complexity of the problem, an evolutionary approach to and the fuzzy logic controller seems to be promising.

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The Modern Approach to Agricultural Extension;T&V, FSR&E, FF (농촌지도사업(農村指導事業)의 새로운 접근(接近);T&V, FSR&E, FF)

  • Choi, Min-Ho;Choe, Young-Chan
    • Journal of Agricultural Extension & Community Development
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    • v.1 no.1
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    • pp.57-65
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    • 1994
  • This study undertakes a critical survey of literatures on the nest development in agricultural extension system; T&V(Traininig and Visit Extension), FSR&E(Fanning Systems Research and Extension), and FF(Farmer First). The study compares the three extension systems in their establishment, objectives, charactersistics, and methods. to find the minor factors for the betterment of agricultural extension system. Those are; 1) client-oriented program, 2) educational service, 3) comprehensive goal and work, 4) benefit to wide range of customers, 5) democratic program, 6) participatory approach, 7) four based experiment, 8) linkages among participants, 9) specialization of extensionists, 10) autonomy of extension offices, 11) humanstic program.

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A Proposal of Health Promotion Program for Overweight Schoolchildren (비만학생을 위한 건강증진프로그램의 제안)

  • Choi, Sun-Ha
    • Research in Community and Public Health Nursing
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    • v.11 no.2
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    • pp.526-537
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    • 2000
  • This study was conducted to contribute to the expansion of activity areas for school nurses in the field of health promotion services whose importance are increasing daily. To achieve such goals the researcher proposed that health promotion programs for obesity management in overweight schoolchildren conducted by literature review to apply to school settings. In this program, the principal components developed a behavior modification program and an exercise program, which could be educated and managed by a nursing staff during for 9 weeks, three times per week, 60 minutes each. The program consisted of exercise, health education. health counseling, and a direct nursing care. This kind of approach may support the need of behavior modification programs and exercise programs on a regular base via the social organization, which may mean an intentional change of life style. A comprehensive approach to health promotion services proposed by this research would contribute greatly to the effectiveness of school health services and to promote health in overweight schoolchildren.

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Performance Analysis Modeling for Design of Rotary Kiln Reactors (로터리킬른 반응기 설계를 위한 성능해석 모형)

  • Eeom, Minjae;Hahn, Taekjin;Lee, Hookyung;Choi, Sangmin
    • Journal of the Korean Society of Combustion
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    • v.18 no.3
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    • pp.9-23
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    • 2013
  • A rotary kiln furnace is one of the most widely used gas-solid reactors in the industrial field. Although the rotary kiln is a versatile system and has different size, approach to the reactor modeling can be generalized in terms of flow motion of the solid and gas phases, heat transfer, and chemical reactions on purpose. In this paper, starting from a zero-dimensional model and extending to higher dimension and comprehensive models, overall procedure of the design development of rotary kiln reactors and considerations are presented. The approaches to performance analysis of the reactors are introduced and examples of application cases are presented.

Automatic and objective gradation of 114 183 terrorist attacks using a machine learning approach

  • Chi, Wanle;Du, Yihong
    • ETRI Journal
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    • v.43 no.4
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    • pp.694-701
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    • 2021
  • Catastrophic events cause casualties, damage property, and lead to huge social impacts. To build common standards and facilitate international communications regarding disasters, the relevant authorities in social management rank them in subjectively imposed terms such as direct economic losses and loss of life. Terrorist attacks involving uncertain human factors, which are roughly graded based on the rule of property damage, are even more difficult to interpret and assess. In this paper, we collected 114 183 open-source records of terrorist attacks and used a machine learning method to grade them synthetically in an automatic and objective way. No subjective claims or personal preferences were involved in the grading, and each derived common factor contains the comprehensive and rich information of many variables. Our work presents a new automatic ranking approach and is suitable for a broad range of gradation problems. Furthermore, we can use this model to grade all such attacks globally and visualize them to provide new insights.