• Title/Summary/Keyword: basic demand

Search Result 1,319, Processing Time 0.03 seconds

Planning ESS Managemt Pattern Algorithm for Saving Energy Through Predicting the Amount of Photovoltaic Generation

  • Shin, Seung-Uk;Park, Jeong-Min;Moon, Eun-A
    • Journal of Integrative Natural Science
    • /
    • v.12 no.1
    • /
    • pp.20-23
    • /
    • 2019
  • Demand response is usually operated through using the power rates and incentives. Demand management based on power charges is the most rational and efficient demand management method, and such methods include rolling base charges with peak time, sliding scaling charges depending on time, sliding scaling charges depending on seasons, and nighttime power charges. Search for other methods to stimulate resources on demand by actively deriving the demand reaction of loads to increase the energy efficiency of loads. In this paper, ESS algorithm for saving energy based on predicting the amount of solar power generation that can be used for buildings with small loads not under electrical grid.

A Study on the Supply and Demand of Fishmeal and Stable Securing Strategies (양어용 어분의 수급 실태 및 안정적 확보 방안)

  • Kim, Dae-Young;Lee, Jung-Sam;Lee, Heon-Dong
    • The Journal of Fisheries Business Administration
    • /
    • v.44 no.3
    • /
    • pp.61-76
    • /
    • 2013
  • This study is aimed to present measures for stable supply of fishmeal and to develop fish farming into a food industry and an export industry. The study analyzed current domestic and international supply and demand for fishmeal and suggested future prospects. The results of the study suggested the basic directions for the stable supply of fishmeal in Korea as follows: first, stable securing of fishmeal importers and establishment of the supply and demand monitoring system; second, policies to boost using of compound feeds and expansion of relevant fishmeal use; third, higher competitiveness of fishmeal and compound feeds through selective and intensive R&D investments. Based on the basic directions, the paper suggested implementation measures such as strengthening of cooperations with fishmeal suppliers abroad, expansion of overseas local market entrance, diversification of fishmeal trading countries, revision of relevant laws and polices on the fishmeal and feeds, organization of domestic fishmeal, promotion of group purchase, improvement of domestic fish meal quality, development of fish meal alternatives, etc.

Empirical Analysis of Supplier Induced Demand in Korea: Distinction between Induced Demand Effect and Availability Effect (우리나라 의원에서의 공급자 유인수요 실증분석: 유인수요 효과와 가용성 효과의 구분)

  • Yeo, Ji-Young;Jeong, Hyoung-Sun
    • Health Policy and Management
    • /
    • v.25 no.1
    • /
    • pp.53-62
    • /
    • 2015
  • Background: Supplier induced demand (SID) indicates the case when doctors increase the demand of the patients, following their (physicians') own best interests rather than patients'. This may occur when asymmetry of information exists between suppliers and consumers. This study aims to confirm whether SID exists in the Korean setting, particularly by dividing SID into both 'induced demand effect' and 'availability effect.' Methods: Induced demand effect and availability effect are differentiated following Carlsen & Grytten's theoretical frame which divides doctor density regions into high and low ones. Results: Positive correlation between doctors' density and utilization of their services was found, which could be interpreted as 'availability effect.' Conclusion: The result suggests that additional medical use for additional doctor, particularly in the area of low doctor density, can be interpreted to occur to meet the basic medical need of the people rather than as a result of unnecessary induced demand. It is important to make more medical doctors provided and to distribute them appropriately across the region in such a country like Korea where doctor's density is relatively low.

Demand Response Program Using the Price Elasticity of Power Demand (전력수요의 가격탄력성을 이용한 수요반응 프로그램)

  • Yurnaidi, Zulfikar;Ku, Jayeol;Kim, Suduk
    • 한국신재생에너지학회:학술대회논문집
    • /
    • 2011.05a
    • /
    • pp.76.1-76.1
    • /
    • 2011
  • With the growing penetration of distributed generation including from renewable sources, smart grid power system is needed to address the reliability problem. One important feature of smart grid is demand response. In order to design a demand response program, it is indispensable to understand how consumer reacts upon the change of electricity price. In this paper, we construct an econometrics model to estimate the hourly price elasticity of demand. This panel model utilizes the hourly load data obtained from KEPCO for the period from year 2005 to 2009. The hourly price elasticity of demand is found to be statistically significant for all the sample under investigation. The samples used for this analysis is from the past historical data under the price structure of three different time zones for each season. The result of the analysis of this time of use pricing structure would allow the policy maker design an appropriate incentive program. This study is important in the sense that it provides a basic research information for designing future demand response programs.

  • PDF

Determinants of Demand for Residential Settlement in Rural Society Based on Depopulation Classification (과소화유형에 따른 농촌사회 정주수요 분석)

  • Lee, Hee-Chan;Kim, Hyun
    • Journal of Korean Society of Rural Planning
    • /
    • v.15 no.1
    • /
    • pp.61-71
    • /
    • 2009
  • The objective of this research was to analyze the determinants of demand for residential settlements in rural societies. A significant aspect of the demand analysis was to consider depopulation classification as a moderating variable with a view to its role as an essential dividing factor of socioeconomic characteristics and physical environments of the areas of concern. The data collection for analysis was divided according to types of depopulation into the three categories of less developed, stagnated, and developed areas. For the cause and effect analysis between the residential demand and factors of settlement, the ordered probit model was applied. Significant determinants of settlement demand unfolded according to depopulation types. In the case of less developed areas, residential demand was affected significantly by the factors of daily life convenience and public facilities. Key settlement demand determinants of stagnated regions included the aspects of basic natural environment, daily life convenience and education. Meanwhile, key settlement demand determinants for developed areas included education and agriculture economic aspects. The importance-performance analysis was also applied to a set of settlement characteristics of rural communities to figure out the settlement factors requiring urgent endeavor to improve.

Electric Power Demand Prospect Pattern System (전력 수요 예측 패턴 시스템 설계)

  • Yu, seung-hyun;Lee, joung-myung;Park, han-ho;Kwak, nae-joung;Lee, hyun-tae;Jeon, jae-sung
    • Proceedings of the Korea Contents Association Conference
    • /
    • 2008.05a
    • /
    • pp.112-115
    • /
    • 2008
  • Recently, In Korea Electric power Corporation guarantee free using, which separate a class of electric supply with a group of generates electricity and supply, so a market price is decided by demand and supply that take part in a tender. In this treatise predict about demand of power by abstracting a pattern cause it (temperature and economic growth). Also it proposes market price of the best electricity power generation with predicted data that is made database and is showed by Web. The proposed system is increased satisfaction of consumer through smoothness of power supply and demand that rises competitiveness through exactly estimated demand at power supply and demand and supply market will open the future. Moreover consumers can reduce expenses of basic charge. Because they beforehand predict and analyze a mount of power spending with former times so a provider concludes the lowest price and reduction effect of basic charge that needed producing of power.

  • PDF

Assessment of electricity demand at domestic level in Balochistan, Pakistan

  • Urooj, Rabail;Ahmad, Sheikh Saeed
    • Advances in Energy Research
    • /
    • v.5 no.1
    • /
    • pp.57-64
    • /
    • 2017
  • Electricity is basic need for country development. But at the present time proper planning and policy is require at high pace for power generation network extension due to the increasing population growth rate. Present study aimed to analyze the present and future demand for electricity at household level in Province of Balochistan of Pakistan via simulation modeling. Data of year 2004-2005 was used as baseline data for electricity consumption to predict future demand of electricity at both rural and urban domestic level up to subsequent 30 years, with help of LEAP software. Basically three scenarios were created to run software. One scenario was Business-As-Usual and other two were green scenarios i.e., solar and wind energy scenarios. Results predicted that by using alternative energy sources, demand for electricity will be fulfill and will also reduce burden on non-renewable energy sources due to the greater potential for solar and wind energy present in Balochistan.

A Study on Industry and Learner's Demand-Based Curriculum Development on Nursing Education : A Case of P University (산업체 및 학습자 수요 간호 교육과정 개발에 관한 연구 : P 대학의 사례)

  • Shin, Hwa-Jin
    • Journal of Korean Clinical Health Science
    • /
    • v.4 no.4
    • /
    • pp.769-781
    • /
    • 2016
  • Purpose. The purpose of this paper was to analyze the educational needs of industry which will hire learner and to develop curriculum to meet the demand. Methods. This study was a descriptive research based on survey results. In each questionnaire, the number of responses and ratios were measured to determine the priorities of the questionnaire items and the education demand was evaluated based on these priorities. Results. The core competency keywords for nurses in industry are knowledge, technology, and communication. In the industry needs for curriculum development, the importance of education to be strengthened for nurse training was found to be core basic nursing skills, nursing process application ability, communication ability, creative nursing problem solving ability, personality and foreign language ability. Conclusion. This study has laid the groundwork for the development of competency based curriculum based on environmental factors and reducing the problems of mis - matching between industry and education.

Estimation of Travel Demand Changes Resulted From Railway Investment (철도 투자에 따른 수요변화 추정방안 연구)

  • Eom, Jin-Ki;Moon, Dae-Seop
    • Proceedings of the KSR Conference
    • /
    • 2008.11b
    • /
    • pp.626-637
    • /
    • 2008
  • Although the amount of travel demand is a critical factor in a benefit-cost (B/C) analysis of railway investment, the travel demand changes especially for induced demand have not been considered. Therefore, the basic study of how to estimate travel demand changes after railway investment is worth investigating. This study reviews the methodologies for estimating diverted and induced demand generated after railway investment, and proposes appropriate approaches that will help railway planners to practically apply them in a case study. Further, the research stimulates the needs of consideration of the travel demand changes in the feasibility studies of railway planning.

  • PDF