• Title/Summary/Keyword: technical investigation

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Investigation Analysis for Transfer & induction of Energy Conservation Technology (에너지 절약기술 이전ㆍ도입 실태조사 연구)

  • 이상설;이덕기;박수억
    • Journal of Energy Engineering
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    • v.13 no.1
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    • pp.40-50
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    • 2004
  • Treatise that see executed investigation analysis about energy conservation technology, which skill move and skill class of introduction subject, transferㆍintroduction skill form, present condition of technology transferㆍintroduction and necessity etc. to energy conservation technology by program of Korea energy basis plan (1997∼2006) etc. Enforced company which questionnaire object achieves from the end 107 assignment practical used of energy conservation technology development propulsion assignment of Korea energy management corporation (KEMCO) to 1998-200 years and 416 companies related energy saving technology constructed to Korea Institute of Energy Research (KIER) database by post investigation and visit investigation. Question investigation result, transferㆍintroduction fields of energy conservation technology are industry sector, the enterprise size appeared with the fact that the small and medium enteifrise is many most. Also, technology transferㆍintroduction section is plan technique, form with technical cooperative form, amount of money 50,000,000 won under, appeared above 1 years in disturbance duration. In hereafter, technology transferㆍintroduction plan it appeared with the fact that the plan technique is many most.

A Study on Firefighter and Police Officer's Perception about the Arson Cause Investigation (소방공무원과 경찰공무원의 방화원인 조사에 대한 인식에 관한 연구)

  • Ko, Gi-Bong;Lee, Si-Young;Chae, Jin
    • Fire Science and Engineering
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    • v.24 no.3
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    • pp.25-32
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    • 2010
  • This research derived the perception with, and their remedies, in our country's fire cause investigation system by conducting survey on the working-level officials responsible for fire cause investigation in the fire stations and police stations. The results of the survey showed the necessity of establishing departments exclusively responsible for fire statistics management, broad area fire cause investigation task force, fire appraisal organizations besides National Institute of Scientific Investigation, standards for retaining fire investigation equipment, ways of improving technical education system, and improving the system for those who are specialized in arson (fire) cause investigation.

Investigation of "Unified Voltage Conditioner - UVC"

  • Antchev, Mihail;Petkova, Mariya;Gourgoulitsov, Vanjo;Antchev, Hristo
    • Journal of Power Electronics
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    • v.12 no.2
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    • pp.357-362
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    • 2012
  • In this paper, a power electronic converter which is composed of two converters - bidirectional AC/DC converter and Series Active Power Filter (SAPF), is discussed. Structural schemas and ways of operation of control systems of converters, which are used to eliminate non sinusoidal parts of the network source voltage, are presented. At the same time, the control used stabilizes the value of the voltage feeding the load. Taking in consideration the combined functions which the device executes, it may be called Unified Voltage Conditioner - UVC.

INVESTIGATION OF A NEW COUPLED SYSTEM OF FRACTIONAL DIFFERENTIAL EQUATIONS IN FRAME OF HILFER-HADAMARD

  • Ali Abd Alaziz Najem Al-Sudani;Ibrahem Abdulrasool hammood Al-Nuh
    • Nonlinear Functional Analysis and Applications
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    • v.29 no.2
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    • pp.501-515
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    • 2024
  • The primary focus of this paper is to thoroughly examine and analyze a coupled system by a Hilfer-Hadamard-type fractional differential equation with coupled boundary conditions. To achieve this, we introduce an operator that possesses fixed points corresponding to the solutions of the problem, effectively transforming the given system into an equivalent fixed-point problem. The necessary conditions for the existence and uniqueness of solutions for the system are established using Banach's fixed point theorem and Schaefer's fixed point theorem. An illustrate example is presented to demonstrate the effectiveness of the developed controllability results.

A study on the Change in the Information Gathering System and Management of the Technical Cooperation (정보환경 변화와 기술협력 관리에 관한 연구)

  • 이진영
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.8 no.1
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    • pp.19-54
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    • 1997
  • This thesis is to study the change in the information gathering system and the management of the technical cooperation. It is on urgent business for an enterprise or a preson to get proper information in modern information flood. To come up with the developed countinues it need to estimate the current world economice condition and to investigate the world economice circumstances. By this investigation we can establish a strategy to get necessary information. Information management will be needed to deal with the flooding new infermations.

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Study on Ingredient Of Organic Acid Ester in Angelicae Gigantis Radix (당귀중(當歸中) 유기산(有機酸) Ester성분(成分)에 관(關)한 연구(硏究))

  • Huh, Jae-Doo;Kim, Yong-Ju
    • Journal of Pharmaceutical Investigation
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    • v.14 no.2
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    • pp.70-75
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    • 1984
  • The contents of organic acid esters in Angelicae gigantis radix were studied using GC-MS. The results revealed that the concentration of propyl p-hydroxy benzoate was 3.0ppm in the head part, 10.5ppm in the main body and 3. 5ppm in the lateral part.

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New Corrosion-Resistant Zn-Al-Mg Alloy Hot-Dip Galvanized Steel Sheet

  • Kohei Tokuda;Yasuto Goto;Mamoru Saito;Hiroshi Takebayashi;Takeshi Konishi;Yuto Fukuda;Fumiaki Nakamura;Koji Kawanishi;Kohei Ueda;Hidetoshi Shindo
    • Corrosion Science and Technology
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    • v.23 no.2
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    • pp.121-130
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    • 2024
  • In recent years, Zn-Al-Mg alloy galvanized steel sheets have been widely used as coated steel sheets to support social capital in the infrastructure field. A feature of Zn-Al-Mg alloy-coated steel sheets is that they provide a better corrosion protection period than Zn-coated steel sheets. In this study, the corrosion resistance of a new Zn-Al-Mg alloy-coated steel sheet was investigated and compared to that of conventional commercially available coated steel sheets. The investigation confirmed that increasing the Mg concentration in the Zn-Al-Mg-coated steel sheet improved corrosion resistance, which was more than 10 times that of the galvanized steel sheet specified in JIS G 3302. The study findings also confirmed that the corrosion resistance reached more than twice that of the coated steel sheet specified in JIS G 3323. If such galvanized steel sheets are applied to social infrastructures that are exposed to severely corrosive environments, the service life of the infrastructure might be extended.