• Title, Summary, Keyword: set priority

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Modeling of decision-makers negotiations in reservoir operation with respect to water quality and environmental issues

  • Mojarabi-Kermani, A.R.;Shirangi, Ehsan;Bordbar, Amin;Bedast, A.A. Kaman;Masjedi, A.R.
    • Membrane Water Treatment
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    • v.9 no.6
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    • pp.421-434
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    • 2018
  • Decision-makers have different and sometimes conflicting goals with utilities in operating dam reservoirs. As repeated interactions exist between decision-makers in the long-term, and the utility of each decision-making organization is affected not only by its selected strategy, but also by other rivals' strategies; selecting and prioritizing optimum strategies from a decision maker's point of view are of great importance while interacting with others. In this paper, a model based on a fuzzy set theory, for determining the priority of decision-makers' strategies in optimal qualitative-quantitative operation management of dam reservoir is presented. The fuzzy priority matrix is developed via defining membership functions of a fuzzy set for each decision maker's strategies, so that all uncertainties are taken into account. This matrix includes priorities assigned to possible combination for other decision makers' strategies in bargaining with each player's viewpoint. Here, the 15-Khordad Dam located in the central part of Iran, suffering from low water quality, was studied in order to evaluate the effectiveness of the model. Then, the range of quality of water withdrawal agreed by all decision-makers was determined using the prioritization matrix based on fuzzy logic. The results showed that the model proposed in the study had high effectiveness model.

Priority Setting for Occupational Cancer Prevention

  • Peters, Cheryl E.;Palmer, Alison L.;Telfer, Joanne;Ge, Calvin B.;Hall, Amy L.;Davies, Hugh W.;Pahwa, Manisha;Demers, Paul A.
    • Safety and Health at Work
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    • v.9 no.2
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    • pp.133-139
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    • 2018
  • Background: Selecting priority occupational carcinogens is important for cancer prevention efforts; however, standardized selection methods are not available. The objective of this paper was to describe the methods used by CAREX Canada in 2015 to establish priorities for preventing occupational cancer, with a focus on exposure estimation and descriptive profiles. Methods: Four criteria were used in an expert assessment process to guide carcinogen prioritization: (1) the likelihood of presence and/or use in Canadian workplaces; (2) toxicity of the substance (strength of evidence for carcinogenicity and other health effects); (3) feasibility of producing a carcinogen profile and/or an occupational estimate; and (4) special interest from the public/scientific community. Carcinogens were ranked as high, medium or low priority based on specific conditions regarding these criteria, and stakeholder input was incorporated. Priorities were set separately for the creation of new carcinogen profiles and for new occupational exposure estimates. Results: Overall, 246 agents were reviewed for inclusion in the occupational priorities list. For carcinogen profile generation, 103 were prioritized (11 high, 33 medium, and 59 low priority), and 36 carcinogens were deemed priorities for occupational exposure estimation (13 high, 17 medium, and 6 low priority). Conclusion: Prioritizing and ranking occupational carcinogens is required for a variety of purposes, including research, resource allocation at different jurisdictional levels, calculations of occupational cancer burden, and planning of CAREX-type projects in different countries. This paper outlines how this process was achieved in Canada; this may provide a model for other countries and jurisdictions as a part of occupational cancer prevention efforts.

Prioritization of Potential Technology for Establishing a Safe Work Zone Environment (안전한 도로 공사구간 환경 구축에 필요한 기술의 우선순위 선정)

  • Kim, Jin Guk;Yang, Choong Heon;Yun, Duk Geun
    • International Journal of Highway Engineering
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    • v.17 no.6
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    • pp.117-126
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    • 2015
  • PURPOSES : This study prioritizes potential technology for establishing a safe work zone environment on roadways. We consider almost all conceivable technologies that enable mitigation of unexpected accidents for both road workers and drivers. METHODS : This study suggests a methodology to set the priority of potential technology for establishing a safe work zone environment by using the analytical hierarchy process (AHP). For this purpose, the AHP structure was first developed. Thereafter, a web-based survey was conducted to collect experts' opinions. Based on the survey results, weights associated with the relevant criteria of the developed structure were estimated. With the consistency index (CI) and consistency ratio (CR), we verified the estimated weights. In addition, a sensitivity analysis was performed to confirm whether the estimated weights were reliable. We finally proposed the priority for potential technology for establishing a safe work zone environment on roadways. RESULTS : In the first level, safety technology has the highest priority, and real-time information delivery for work zone, hazard warning for drivers, and temporal automated operation for traffic facilities were selected in the second level of hierarchy. CONCLUSIONS : The results imply that establishing the priority will be useful to establish a future road map for improving the work environment for road workers and drivers by employing appropriate protection facilities and developing safety systems.

The Improvement of Wetland Conservation Plan for Upo Wetland Protected Area (우포늪 습지보호지역 보전계획 개선방안)

  • Kim, Su-Ryeon;Song, Won-Kyong
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.22 no.4
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    • pp.65-80
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    • 2019
  • The Wetland Conservation Plan is used as a tool to set the management direction of wetland protected areas, and which is establishing a plan for the conservation, wise-use, and management based on wetland's condition. This study was conducted to establish a conservation plan considering the functions and management conditions of Upo wetland protected area. To this end, there are analyzed the current issues, plans and implementation status of Upo Wetland Conservation Plans in the past. The management elements to be considered in establishing the Wetland Conservation Plan were selected through prior research analysis and the priority of those elements was identified through the AHP. As a result, it was found that lack of considering the changes and performance evaluation of the existing plans in wetlands, conducting short-term projects related to maintenance original function of wetland, different management methods for wetland protected areas and other adjacent areas, lack of understanding and cooperation by stakeholders, inconsistencies in timing of the Conservation Plan and survey of wetland protected areas. In order to improve the problem, it needs to include the performance evaluation stage of establishing the conservation plan, strengthen cooperation of stakeholders and expertise, continuing of projects for wetlands' maintenance, priority of the project considering the management side, and to adjust the timing of plans to improve data availability.

Development of Fuzzy Network Performance Manager for Token Bus Networks in Automated Factories (공장자동화용 토큰버스 네트워크의 퍼지 성능관리기 개발)

  • Lee, Sang-Ho;Son, Joon-Woo;Lee, Suk
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.20 no.8
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    • pp.2436-2448
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    • 1996
  • This paper presents the development of three types of network performance manager for IEEE 802.4 token bus networks that are a part of Manufacturing Automation Protocol(MAP). The performance managers attempt to keep the average data latency below a certain level specified for each priority class. All of the three performance managers are based on a set of fuzzy rules incorporating the knowledge on the relationship between data latency and parameters of the priority mechanism. These Fuzzy Network Performance Managers(FNPMs) have been evaluated via discrete event simulation to demonstrate their efficacy.

Emergency Degree and Usage Frequency Analysis of Vehicle IP Composition Factors to Provide Safety Driving Environment (안전운전 환경 제공을 위한 자동차 IP 구성요소의 긴급도와 사용빈도 분석 -소비자 설문을 바탕으로-)

  • Paik, Seung-Youl;Park, Peom
    • Journal of the Korean Society of Safety
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    • v.14 no.3
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    • pp.193-197
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    • 1999
  • By the report of KISCO, the 54.20% of total disaster and the 20.87% of death disaster was caused by unsafe position-control. However, it is possible to decrease this kind of disaster rate by designing the control device in the consideration of safety. One of the most popular control device is vehicle instrument panel. Therefore, not only basic function but safe control under the driving environments should be considered when the vehicle instrument panel is designed. For safe control at the driving time, it is especially important to determine the priority of each part using emergency degree and usage frequency, and to set them with this priority for easy control position. In this paper, developing method to determine the priority of each part by pair-wise comparison for emergency degree and usage frequency was suggested and generated the mutual order weights to give them orders. To apply this method to the parts of instrument panel such as function button, audio, air conditioner, and other several detail parts, the direct questionnaire was implemented to drivers about the emergency degree and usage frequency of each part.

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Priority Re-setting for Future Core & Strategic Technologies in Agricultural and Environmental Science (농업환경 분야의 미래유망기술 및 전략기술에 관한 우선순위 재설정)

  • Cho, Keun-Tae;Joo, Jin-Ho;Ok, Yong-Sik;Shin, Bong-Chul;Kim, Jee-Yong;Lee, Jong-In
    • Korean Journal of Environmental Agriculture
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    • v.27 no.4
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    • pp.395-405
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    • 2008
  • The objective of this study was to set priority for future core technologies in agricultural and environmental science using analytic hierarchy process(AHP). Forty-six technologies were derived by specialist meetings. Evaluation criteria, for setting the priority were decided as 'technology', 'marketability', and 'public'. Eighteen specialists in agricultural and environmental science answered to the questionnaire for AHP. As the results, 'technology' was decided as the most important evaluation criterion. The 'Feasibility' in 'technology' criterion, 'Market Growth' in 'marketability' criterion, and 'Impact to other industry' in 'public' criterion were decided as sub-criteria in each criterion. The most important technology was 'Risk assessment of toxic heavy metals and establishment of accreditation criteria for environmentally friendly agricultural products.

Comparative Analyses of Social Media on Its Impacts on Consumer Behavior in On-line Markets (온라인 시장에서 소셜미디어가 소비자 행동에 미치는 영향 비교분석)

  • Shin, Young-Ho;Kim, Sun-Geun
    • The Journal of Distribution Science
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    • v.15 no.10
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    • pp.81-92
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    • 2017
  • Purpose - One of the main objectives of this paper is to identify the most effective type of social media and to analyze the priority of blogs by their informational attributes in the aspect of their impacts on word-of-mouth intention(WOM) in on-line markets. Research design, data, and methodology - We set 'attitude' variable in the middle to see if there is mediating effects between blog information and word-of-mouth intention. We conducted a survey by questionnaire and received 206 answers. Employing the OLS statistical methods through the SPSS package, we tested our hypotheses. Results - Some of the main results are the followings. First, blog, micro-blog, and profile-based services showed significant effects on WOM, while Internet community and mini-homepages are not significant. Second, blog has positive impacts on WOM. Third, attitude has perfect mediating effects between blog and WOM. Fourth, in terms of effects on WOM, interactivity shows the first priority and reliability and usability follows. Finally, attitude has a more significant effect for users of 3 types of blog compared with those of 2 types. Conclusions - In this paper, we analyzed the effects of social network services by type and identified the priority among various attributes of information contained in blogs. It would provide businesses with viable strategic options to establish public relations in their sales promotion.

A Cell Loss Constraint Method of Bandwidth Renegotiation for Prioritized MPEG Video Data Transmission in ATM Networks (ATM망에서 우선 순위가 주어진 MPEG 비디오 데이터 전송시 대역폭 재협상을 통한 셀 손실 방지 기법)

  • Yun, Byoung-An;Kim, Eun-Hwan;Jun, Moon-Seog
    • The Transactions of the Korea Information Processing Society
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    • v.4 no.7
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    • pp.1770-1780
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    • 1997
  • Our problem is improvement of image quality because it is inevitable cell loss of image data when traffic congestion occurs. If cells are discarded indiscriminately in transmission of MPEG video data, it occurs severe degradation in quality of service(QOS). In this paper, to solve this problem, we propose two method. The first, we analyze the traffic characteristics of an MPEG encoder and generate high priority and low priority data stream. During network congestion, only the least low priority cells are dropped, and this ensures that the high priority cells are successfully transmitted, which, in turn, guarantees satisfactory QoS. In this case, the prioritization scheme for the encoder assigns components of the data stream to each priority level based on the value of a parameter ${\beta}$. The second, Number of high priority cells are increased when value of ${\beta}$ is large. It occurs the loss of high priority cell in the congestion. To prevent it, this paper is regulated to data stream rate as buffer occupancy with UPC controller. Therefore, encoder's bandwidth can be calculated renegotiation of the encoder and networks. In this paper, the encoder's bandwidth requirements are characterized by a usage parameter control (UPC) set consisting of peak rate, burstness, and sustained rate. An adaptive encoder rate control algorithm at the Networks Interface Card(NIC) computes the necessary UPC parameter to maintain the user specified quality of service. Simulation results are given for a rate-controlled VBR video encoder operating through an ATM network interface which supports dynamic UPC. These results show that dynamic bandwidth renegotiation of prioritized data stream could provided bandwidth saving and significant quality gains which guarantee high priority data stream.

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Design for ILS in Ammunition Development applying QFD Method (QFD를 활용한 탄약 ILS 효율화 방안 연구)

  • Lee, Seung-Mok;Park, Young-Won
    • Journal of the Korea Society of Systems Engineering
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    • v.5 no.2
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    • pp.1-9
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    • 2009
  • This paper proposes an effective method on the DFILS(Design for Integrated Logistics Support) in ammunition development applying QFD(Quality Function Deployment) method. The goal of this research is to define the Design for ILS approach at the start of the ammunition development and to yield a set of reusable requirements. Based on 000mm High-Explosive(Warship ammunition) development work, a QFD software tool, CUPID, was used to analyze and define the field force's requirements. Additionally, a set of reusable requirements are identified and defined for use during the Design for ILS development phase in the next-generation ammunition development process. These set of requirements that consider both the priority and importance of the VOC(Voice of Customer) will contribute to the early phase of the ammunition development to implement the Design for ILS specialty engineering effort.

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