• Title/Summary/Keyword: Well cost

Search Result 4,525, Processing Time 0.04 seconds

The Relationships Between Midlife Working Women s Psychological Well-Being and Reward/Cost of Family Role and Work Role (중년기 기혼 취업여성의 가족역할과 직업역할의 보상/비용에 따른 심리적 복지)

  • 신기영;옥선화
    • Journal of the Korean Home Economics Association
    • /
    • v.38 no.8
    • /
    • pp.29-51
    • /
    • 2000
  • The purpose of this study is to examine how midlife working women's psychological well-being is associated with their reward/cost of family role and work role according to their kinds of job. For empirical research, 627 married working women living in Seoul, aged between 40-55 answered the structured questionnaire. The subjects consisted of 301 professional working women and 326 non-professional working women. The data were analysed by the frequencies, mean, oneway ANOVA, and multiple regression. The major findings were as follows 1) Two sub areas of midlife working women's psychological well-being-self esteem and life satisfaction-were higher than an average level. 2) The more midlife working women performed family role and work role, they perceived reward more than cost. 3) For the professional working women, the more they perceived the reward of family role and work role, the higher their psychological well-being was. The more they perceived the cost of family role and work role, the lower their psychological well-being was. These consequencies applied to not only general reward/cost of family role and work role but also interrole reward/cost between family role and work role. For the non-professional working women, general and interrole reward of family role and work role had the positive effects on psychological well-being. Their general cost of spouse role, general and interrole cost of mother role, general cost of work role had the negative erects on psychological well-being. However interrole cost between spouse role and work role did not have a significant effect on psychological well-being. Finally, the result of multiple regression analysis showed that general reward of work role had the largest positive effect on midwife working women's self-esteem. General reward/cost of spouse role had the largest effect on their life satisfaction.

  • PDF

The Development of an Product Cost Estimation System at the Product Design Stage (제품 설계 단계에서의 제품 원가 추정 시스템 개발)

  • 한관희;박찬우;이규봉;황태일;김강용
    • Korean Journal of Computational Design and Engineering
    • /
    • v.8 no.2
    • /
    • pp.101-108
    • /
    • 2003
  • Presented in this paper is the development of an product cost estimation system at the product design stage. The efficient cost estimation function at the design stage is essential for the cost reduction activities through the entire product life cycle. For this purpose, it is necessary to establish a systematic working procedure, and to develop information system for managing a great deal of production and product-related data required for the cost estimation. The developed system has the capability of estimating a cost of assembly type products as well as unit-item type products. As proposed system is based on the variant approach, it can be used easily at an early design stage without the need for detail design information. Also, this system is integrated with legacy PDM (Product Data Management) and ERP (Enterprise Resource Planning) system for fast. accurate and easy product cost estimation. The estimated cost includes material cost, overhead cost as well as labor cost.

Sensititivity Analysis For Development Of Gulf Of Alaska

  • Pak, Ee-Tong
    • 한국해양학회지
    • /
    • v.11 no.2
    • /
    • pp.57-63
    • /
    • 1976
  • It was attempted to analyze the sensitivity of the oil prospect place named MARIA which placed inside Gulf of Alaska. For the analysis, P6031090, ECOANA( computer) which installed in the head office, Shell Oil Co was used and the data needed for computer programming were 1) Unit of Production data 2) Production Schedule 3) Total Gross Yearly Expenses and 4) Total Gross Capital and so on. The important data among the computer output 1) PVPAT (Present Value After Tax): $1,167,077,500 2) Payout After Tax: 3.14 Years (256,284,810 BBL Production) 3) Earning Power: 42% (After Tax) 4) PVPAT/BBL : $1.22 5) Capital/BBL : $2.00. On the other hand, the effect acted upon PVPAT with varying the Platform cost, Facility cost, Pipeline cost and Well cost was observed in comparion with the basic for range from 50% to 200%. Resultantly, the order was 1) Pipeline cost 2) Facility cost 3) Well cost 4) Platform cost for range form 100% to 200%. This project was completed by the contract with Shell Oil Co., and the geological data needed for this analysis were given by the head office and the development project started from Jan. 1976.

  • PDF

Gas Hydrate Supply Chain analyses of economy for the natural gas transportation (천연가스 수송을 위한 Gas Hydrate Supply Chain의 경제성 분석)

  • Kim, Cheoulho;Lee, Jaeik;Jeong, Taeseok
    • 한국신재생에너지학회:학술대회논문집
    • /
    • 2010.11a
    • /
    • pp.151.1-151.1
    • /
    • 2010
  • Natural gas hydrates (NGH) provide 170 gas volumes per unit volume of the medium and are easier to make with moderate pressure and temperature (40 bar at 3 C). Once they form, their preservation temperature is 20 C at 1 bar, which is much milder than the LNG preservation. In case of using the NGH, The small and medium sized gas well has advantages for development because of NGH's these characteristics. According to the cost evaluation report of Gudmundsson in Norway and the research of MES in Japan, the gas well that uses the NGH has a cost saving effect about 10~20% compared LNG. The effect depends on distance and production. However, cost saving and efficiency of liquefaction process is increased by the development of LNG liquefaction technology. Therefore, these factors have to be reflected in economic analysis. The purpose of this research is to compare the cost of Gas Supply Chain according to the transport type, distance and gas reserves. Especially, we consider not only the cost of facility but also the total cost (production cost, transport cost, etc).

  • PDF

Design and Characteristics of Modern Power MOSFETs for Integrated Circuits

  • Bang, Yeon-Seop
    • The Magazine of the IEIE
    • /
    • v.37 no.8
    • /
    • pp.50-59
    • /
    • 2010
  • $0.18-{\mu}m$ high voltage technology 13.5V high voltage well-based symmetric EDMOS isolated by MTI was designed and fabricated. Using calibrated process and device model parameters, the characteristics of the symmetric and asymmetric EDMOS have been simulated. The asymmetric EDMOS has higher performance, better $R_{sp}$ / BVDSS figure-of-merit, short-channel immunity and smaller pitch size than the symmetric EDMOS. The asymmetric EDMOST is a good candidate for low-power and smaller source driver chips. The low voltage logic well-based EDMOS process has advantages over high voltage well-based EDMOS in process cost by eliminating the process steps of high-voltage well/drift implant, high-temperature long-time thermal steps, etc. The specific on-resistance of our well-designed logic well-based EDMOSTs is compatible with the smallest one published. TCAD simulation and measurement results show that the improved logic well-based nEDMOS has better electrical characteristics than those of the conventional one. The improved EDMOS proposed in this paper is an excellent candidate to be integrated with low voltage logic devices for high-performance low-power low-cost chips.

  • PDF

Comparative Analyses of Mass Marketing and Target Marketing Based on Price Elasticity and Production Cost (가격탄력성과 생산비용에 기초한 대량 마케팅과 표적시장 마케팅의 비교 분석)

  • Won, Jee Sung
    • Journal of Distribution Science
    • /
    • v.11 no.4
    • /
    • pp.61-72
    • /
    • 2013
  • Purpose - It is widely accepted that the process of developing marketing strategy is composed of three steps: market segmentation, target market selection and positioning. However, mass marketing strategy based on cost reduction through economies of scale and standardized products, can be also an effective strategic option. Many marketing scholars including Theodore Levitt emphasize the importance of applying the mass production concept to various industries including service industries. Especially, in times of economic downturn, the capability of providing consumers with low-priced, value products can be an important source of competitive advantage, as well as the ability of providing high-priced premium products. Marketers should decide whether they will implement mass marketing strategy or target marketing strategy. The present study theoretically shows that firms should understand the target customers' price elasticity as well as the firm's cost structure in order to make such a strategic decision. Research design, data, and methodology - Instead of implementing an empirical study, this study provides a theoretical(mathematical) investigation on the effect of consumers' price elasticity on a firm's optimal price level, profit, sales volume, revenue, and cost. The results are mostly deduced from derivative calculations and several graphs are utilized to represent the results on the relationships between the variables under study. Results - The analytical results suggest that it is more profitable for a firm to adopt the segment/target marketing strategy (more specifically the differentiation strategy) when the degree of consumers' heterogeneity is high and the proportion of the fixed cost in the total cost is low. On the other hand, if the degree of consumers' heterogeneity is low and the fixed cost is high, it is better to adopt the mass marketing strategy or the cost leadership strategy. The strategy of concentrating on a single target market will be effective when consumers' needs are highly heterogeneous but the fixed cost is high. Any of the three types of generic strategies proposed my Porter(1980, 1985) can be applied when both the consumers' heterogeneity and the fixed cost are low. This study also proposes the contribution-margin-based method for developing the optimal pricing strategy. Conclusions - One of the primary roles of marketers is to find a proper compromise between the two conflicting goals of maximizing customer satisfaction and minimizing cost. In order to do so, he or she should understand the characteristics of the target customers as well as the cost structure of the firm. In addition to the theoretical analyses, this study discusses several business cases and explains how superior companies find the optimal compromise position between these two goals and dominate the market. One of the radical changes recently taking place in business arena is the reduction of production and distribution costs of both physical goods and information due to the advancement and the wide diffusion of information technology. The cost reduction combined with lowered priced elasticity incurred by customized products and services, will enable many firms to adopt the mass customization strategy.

  • PDF

Finding Cost-Effective Mixtures Robust to Noise Variables in Mixture-Process Experiments

  • Lim, Yong B.
    • Communications for Statistical Applications and Methods
    • /
    • v.21 no.2
    • /
    • pp.161-168
    • /
    • 2014
  • In mixture experiments with process variables, we consider the case that some of process variables are either uncontrollable or hard to control, which are called noise variables. Given the such mixture experimental data with process variables, first we study how to search for candidate models. Good candidate models are screened by the sequential variables selection method and checking the residual plots for the validity of the model assumption. Two methods, which use numerical optimization methods proposed by Derringer and Suich (1980) and minimization of the weighted expected loss, are proposed to find a cost-effective robust optimal condition in which the performance of the mean as well as the variance of the response for each of the candidate models is well-behaved under the cost restriction of the mixture. The proposed methods are illustrated with the well known fish patties texture example described by Cornell (2002).

소프트웨어 비용추정 모형에 관한 소고

  • Kim, In-Su;Lee, Dae-Gi
    • ETRI Journal
    • /
    • v.9 no.3
    • /
    • pp.139-156
    • /
    • 1987
  • The problems in software cost management are well known. Cost estimates are too low. Software development projects frequently have cost overruns, which are due to poor estimates. A fair amount of work have been done toward developing cost estimation models. These models vary in their outputs (e. g., total cost, manning schedule) and in the factors used to calculate their estimates. They also vary with regard to the type of formula, parameters, use of previous data, and staffing considerations. This paper will distinguish them by the type of formula they use to calculate total effort and staffing level, and will discuss enough models to demonstrate the characteristics of each model category.

  • PDF

Evaluation of Optimal Transfer Capability in Power System Interconnection (연계된 계통간의 최적 송전 용량 산정)

  • Son, Hyun-Il;Bae, In-Su;Jeon, Dong-Hoon;Kim, Jin-O
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.59 no.4
    • /
    • pp.679-685
    • /
    • 2010
  • As the electrical power industry is restructured, the electrical power exchange is becoming extended. One of the key information used to determine how much power can be transferred through the network is known as available transfer capability (ATC). To calculate ATC, traditional deterministic approach is based on the severest case, but the approach has the complexity of procedure. Therefore, novel approach for ATC calculation is proposed using cost-optimization method, well-being method and risk-benefit method in this paper. This paper proposes the optimal transfer capability of HVDC system between mainland and a separated island in Korea through these three methods. These methods will consider production cost, wheeling charge through HVDC system and outage cost with one depth (N-1 contingency).

A Study on the Validity of Government Cloud SaaS Service Migration using TCO Approach (TCO 접근방법을 통한 정부클라우드 SaaS 서비스 전환의 타당성에 관한 연구)

  • Yoon, Seong-Jeong;Kim, In-Hwan;Seo, Jung Wook;Kim, Min-Yong
    • Journal of Information Technology Services
    • /
    • v.11 no.4
    • /
    • pp.215-231
    • /
    • 2012
  • It is well known that SaaS(Software as a Service) changeover gives several advantages to organization. One of the advantages is the cost reduction effect of IT resources as well as IT human resources. Another one is the curtailment of software development workload in the field of informatization promotions. Nonetheless, it is hard to find comparison cases regarding the quantitative measurement of the introduction of SaaS before and after. Accordingly, when the Government IDC tries to adopt SaaS, it absolutely needs the empirical study whether SaaS is cost-effectiveness or not. In this study, we focus on variation in the Government administration common tasks, processes and labor costs. Using the Man-Month(MM) estimation methods, We verify that how much TCO(Total Cost of Ownership) is reduced per year.