• 제목/요약/키워드: Keeping Management

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A Comprehensive Cash Management Model for Construction Projects Using Ant Colony Optimization

  • Mohamed Abdel-Raheem;Maged E. Georgy;Moheeb Ibrahim
    • 국제학술발표논문집
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    • The 5th International Conference on Construction Engineering and Project Management
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    • pp.243-251
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    • 2013
  • Cash management is a major concern for all contractors in the construction industry. It is arguable that cash is the most critical resource of all. A contractor needs to secure sufficient funds to navigate the project to the end, while keeping an eye on maximizing profits along the way. Past research attempted to address such topic via developing models to tackle the time-cost tradeoff problem, cash flow forecasting, and cash flow management. Yet, little was done to integrate the three aspects of cash management together. This paper, as such, presents a comprehensive model that integrates the time-cost tradeoff problem, cash flow management, and cash flow forecasting. First, the model determines the project optimal completion time by considering the different alternative construction methods available for executing project activities. Second, it investigates different funding alternatives and proposes a project-level cash management plan. Two funding alternatives are considered; they are borrowing and company own financing. The model was built as a combinatorial optimization model that utilizes ant colony search capabilities. The model also utilizes Microsoft Project software and spreadsheets to maintain an environment that incorporates activities, their durations, and other project data, in order to estimate project completion time and cost. Ant Colony Optimization algorithm was coded as a Macro program using VBA. Finally, an example project was used to test the developed model, where it acted reliably in maximizing the contractor's profit in the test project.

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학교급식 영양사의 업무 중요도 및 임무차원 분석 (The Importance and Categorization of Task Elements of School Food Service Dietician)

  • 이영은;양일선;차진아
    • Journal of Nutrition and Health
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    • 제35권6호
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    • pp.668-680
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    • 2002
  • The purpose of this study was to investigation the importance and categorization of task elements of school food service dietician and to provide the useful data for standard model of the dietician′s tasks of school foodservice. This study was conducted in school food services nationwide in method of written questionnaire. The questionnaires were mailed to the dieticians of 3 type school foodservice system-conventional, commissary, joint management. Of the 660 schools that participated in this study, the responses from 212 conventional system and 212 commissary system and 200 joint management system were selected for analysis. Statistical analysis was performed with SAS/Win 6.12 package program for descriptive analysis, T-test, ANOVA, factor analysis using. The main results of this study can be summarized as follows Importance level was more than 4 score out of 5 scale in most of the task elements. The result was indicative of the appropriateness of definition of the 61 task elements. Of 61 task elements, importance level on ′nutrition education′ and on ′evaluation of foodservice operation management′ indicated the most significant difference between present and ideal situation. Through factor analysis, 61 task elements were regrouped into 7 dimensions; "Duty dimension of cooking and distribution management", "Duty dimension of cost management", "Duty dimension of raw material management", "Duty dimension of education management", "Duty dimension of menu management", "Duty dimension of record keeping of foodservice", "Duty dimension of general management (others)".

개인정보 영향평가 사례 연구 -K병원의 영향평가 사례를 중심으로- (A case study of Privacy Impact Assessment -Focus on K hospital Privacy impact assessment case-)

  • 전동진;정진홍
    • 디지털융복합연구
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    • 제10권8호
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    • pp.149-157
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    • 2012
  • 개인정보보호법이 새로 제정이 되어 기업 및 기관에서 이에 대한 준비와 대책 마련이 활발히 전개되고 있다. 개인정보를 취급하는 정보시스템에 대하여 개인정보 침해의 위협을 사전에 예방 및 점검을 수행하는 개인정보영향평가를 K병원의 분석 사례를 통해 연구하였다. 결론적으로 K병원의 개인정보 영향평가 분석을 수행한 결과 평가영역별로는 대상기관관리체계는 79.0, 대상시스템의 보호수준은 97.9, 개인정보처리단계의 결과는 67.4이고 CCTV는 90.0으로 나타났다. 개인정보보호수준이 가장 낮은 항목은 개인정보생명주기관리 항목의 저장 및 보유단계 50.0, 이용 및 제공 64.1 및 파기 단계 66.7로 나타났다. 위험도 분석결과 고위험도 항목은 개인정보처리구역 항목 11.0과 개인정보생명주기 영역의 저장 및 보유단계 항목이12.5, 파기단계 항목이 13.0으로 높은 수치가 나왔다. 종합적으로 보면 고위험도이면서 저보호수준인 항목은 저장 및 보유단계와 파기단계로 파악이 되었다.

인사동의 물리적 심리적 이미지의 평가 (An Evaluation on the Physical and Psychological Image of Insa-Dong)

  • 조정숙;김남조
    • 한국조경학회지
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    • 제30권2호
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    • pp.12-22
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    • 2002
  • This study examines the visitors'evaluations of tourism resources in Insa-dong, which the Seoul metropolitan government has improved recently. This study adopted the method of Importance-Performance Analysis by collecting data through questionnaires. A random sampling of visitors to Insa-dong was conducted in June and July,2001. The survey included questions on the physical and psychological components of Insa-dong's tourism resources. In the case of physical components, eight factors(ancient arts shop, art gallery, atelier, calligraphy shop, pottery arts, traditional tea house, antique shop, traditional clothes) out of thirteen were categorized as 'keeping up the good work'. None of the Physical components was shown as 'low priority'or'possible overkill'. In particular, four factors(restaurant, heritage, Korean-style house and alley, traditional cultural festival) need to be impoved most urgently in terms of visitors'satisfaction. Survey results realize them as high priority in importance but low in performance, thereby designated as, 'concentrate here'. An image of the 'street' showed to be high in importance and identical in performance, so can be categorized between'keeping up the good work'and 'concentrate here'. The results show that unusual outdoor spaces and the festivals of Insa-dong have a significant meaning to the visitors. In the case of psychological components, three factors(general atmosphere experience of unusual atmosphere, appropriateness of stroll time) out of seventeen were categorized as 'keeping up the good work'. Ore factor (shopping) was designated as 'low priority'and not found to be 'possible overkill'. Thirteen factors (various events, possibility of various activity, various flood, richness of play, new experience, education cultural inheritance, parking facilities, resting places, green spaces, meeting places, guide map and information, cleanliness of facilities/convenience) need to be improved mast urgently in terms of visitors' fulfillment. They are perceived as areas of 'concentrate here'. This confirms that attractive events are essential for the recent visitor satisfaction. Furthermore, visitors are not satisfied with its amenity and acccss in Insa-dong despite the improvements. In conclusion, positive impressions, both physical and psychological, should be maintained while factors mentioned to be lacking should be prioritized in order of necessity to improve the image of Insa-dong and solutions need to be found and implemented. The results of this study would be helpful in the planning and management of nsa-dong considering the visitors'requirements.

C쇼핑몰 개인정보 영향평가 사례연구 (A case study of Privacy Impact Assessment for C-Shopping Mall)

  • 전동진;정진홍
    • 한국산업정보학회논문지
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    • 제17권6호
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    • pp.73-82
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    • 2012
  • 이 논문은 개인정보를 취급하는 정보시스템에 대하여 개인정보 침해에 대한 위협을 사전에 예방 및 점검을 수행하는 개인정보영향평가를 C쇼핑몰의 분석 사례를 통해 연구하였다. 결론적으로 C쇼핑몰의 개인정보 영향평가 분석을 수행한 결과 평가영역별로는 대상기관관리체계는 29.2, 대상시스템의 보호수준은 68.8, 개인정보처리단계의 결과는 25.5이고 신기술은 60.0으로 나타났다. 개인정보보호수준이 가장 낮은 항목은 대상기관의 개인정보파일관리 16.7, 개인정보생명주기관리 항목의 저장 및 보유단계 12.5, 이용 및 제공 단계 11.5, 파기 단계 16.7로 나타났다. 위험도 분석결과 고위험도 항목은 개인정보생명주기 영역의 저장 및 보유단계 항목이13.3, 파기단계 항목이 13.0으로 높은 수치가 나왔다. 종합적으로 보면 고위험도이면서 저보호수준인 항목은 저장 및 보유단계와 파기단계로 파악이 되었다.

우리나라 공과대학 연구실 연구기록의 체계적 관리 방안에 관한 연구 (A Study on the Methods for Systematic Management of Research Records in Engineering School Laboratories in Korea)

  • 최현옥;이해영
    • 한국기록관리학회지
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    • 제10권1호
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    • pp.119-139
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    • 2010
  • 연구의 진실성을 검증하거나 특허권 관련이나 지식재산권에 관한 법적 분쟁에 대응하기 위하여 연구기록은 증거로도 매우 중요하며, 이전 연구의 정보 제공을 위해서도 중요하다. 그러나 공과대학 연구실의 연구기록 관리는 아직 초보적 단계이며, 관련 규정 및 모범 사례도 부족하여 체계적인 연구기록 관리에 어려움이 있다. 본 연구에서는 공과대학 연구실의 현황을 알아보고, 문제점들을 분석해보고, 효율적인 연구기록 관리를 위해 관련 규정 및 프로세스의 정비, 연구기록관리 과정의 체계화, 연구자 교육 및 인프라 구축 등의 체계화 방안을 제시하였다.

Improving a Forward & Backward Secure Key Management Scheme for Wireless Sensor Networks

  • Park, Dong-Gook
    • Journal of information and communication convergence engineering
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    • 제7권4호
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    • pp.521-524
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    • 2009
  • Park proposed a forward & backward Secure key management scheme in wireless sensor networks for Process Control Systems (PCSs) or Supervisory Control and Data Acquisition (SCADA) systems [7]. The scheme, however, is still vulnerable to an attack called "sandwich attack": two nodes captured at times $t_1$ and $t_2$, respectively, surrenders all the group keys used between times $t_1$ and $t_2$. In this paper, we propose a fix to the scheme, which can limit the vulnerable time duration to an arbitrarily chosen time span while keeping the forward and backward secrecy of the scheme untouched.

멀티미디어 시스템 정보보호수준관리를 위한 관리형 프랙티스에 관한 연구 (A Study on The Managing Practices in SLM for Multimedia System)

  • 김태훈;조성언
    • 한국항행학회논문지
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    • 제12권6호
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    • pp.673-680
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    • 2008
  • 멀티미디어 시스템의 보안은 멀티미디어 자산 자체를 보호하는 것과 시스템을 보호하는 것, 두 가지 측면으로 나누어 생각할 수 있는데, 이들 두 가지 측면을 별도로 고려한다고 하여도 보안관리의 중요성은 결코 떨어지지 않는다. 본 논문에서는 멀티미디어 시스템의 정보보호수준을 관리하기 위한 관리적 측면에서의 프랙티스들을 도출하고, 이를 적용하기 위해 그룹화하였다.

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한국제조업(韓國製造業)의 생산관리(生産管理) 체제(體制)의 발전전략(發展戰略) (Development Strategy of Production Management Systems in Korean firms)

  • 안문영;이근희
    • 품질경영학회지
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    • 제19권1호
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    • pp.170-187
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    • 1991
  • Investments in factory automation do not guarantee productivity enhancement. Much unknown losses may exist in all aspects of production resources such as in material, manpower, machine, etc. Total productivity in korean firms has decreased in recent years. Labor and capital productivity index fall to 0.82 point and 0.73 point, respectively. Investment in FA has Increased rapidly. Tangible fixed assets per capita increased 64% during the past Three years. But, this high-technology oriented systems such as NC, robotics, CAD/CAM, FMS, etc. are often out of keeping with the old production process control, and thus do not result in satisfactory performance. This review paper concerned with these problems and suggests some future directions for production control and development strategy of korean firm's.

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Development and Status of Smartphone Application for Farm Recordkeeping

  • Park, Kye Won;Joe, Seong Yeon;Hong, Eui Yon;Park, Seong Sik
    • Agribusiness and Information Management
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    • 제7권2호
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    • pp.27-37
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    • 2015
  • This study was carried out with the goal of improving accessibility for farmers in record management. The pre-survey for farm records found that the main reasons for lack of records were "no need" and "no time" to keep such records. Based on the results of the pre-survey of smartphone-based farm recordkeeping, the major composition articles were management books, daily work logs, analysis books and additional books compiled by setting log in, notice and suggestions. The number of smartphone-based farm record books was 4,430 nationwide. We also updated farms keeping records on seven occasions for user convenience. Regional differences in the utilization ratio of record books showed that continuous promotion and education aimed at users were key points of success for farm recordkeeping books.