• Proceedings of the Korean Vacuum Society Conference
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• 2010.08a
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• pp.18-18
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• 2010

Methods of the characteristics evaluation of turbo-molecular pumps (TMP) are well-defined in the international measurement standards such as ISO, PNEUROP, DIN, JIS, and AVS. The Vacuum Center in the Korea Research Institute of Standards and Science has recently designed, constructed, and established the integrated characteristics evaluation system of TMPs based on the international documents by continuously pursuing and acquiring the reliable international credibility through measurement perfection. The measurement of TMP pumping speed is normally performed with the throughput and orifice methods dependent on the mass flow regions. However, in the UHV range of the molecular flow region, the high uncertainties of the gauges, mass flow rates, and conductance are too critical to precisely accumulate reliable data. With UHV gauges of uncertainties less than 15% and a calculated conductance of the orifice, about 35% of pumping speed uncertainties are experimentally derived in the pressure range of less than $10^{-6}$ mbar. In order to solve the uncertainty problems of pumping speeds in the UHV range, we introduced an SRG with 1% accuracy and a constant volume flow meter (CVFM) to measure the finite mass flow rates down to $10^{-3}$ mbar-L/s with 3% uncertainty for the throughput method. In this way we have performed the measurement of pumping speed down to less than $10^{-6}$ mbar with an uncertainty of 6% for a 1000 L/s TMP. In this article we suggest that the CVFM has an ability to measure the conductance of the orifice experimentally with flowing the known mass through the orifice chambers, so that we may overcome the discontinuity problem encountering during introducing two measurement methods in one pumping speed evaluation sequence.

• Korean System Dynamics Review
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• v.10 no.1
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• pp.77-95
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• 2009

The ever-increasing government budget constraints have led to a continued decline in the increase rate for defense spending, and the government's 5-year National Fiscal Management Plan has served to reinforce the verification and validation procedures for the Force Improvement Programs (FIP) budget requirements and performance. Additionally, as large programs are controlled in accordance with the Total Program Cost Management Guidelines, timely and credible feasibility study and performance measurement need to be conducted. Due to these internal and external circumstances, needs have surged for feasibility and economic effectiveness study for big ticket projects in the FIP sector, with an increasing number of studies conducted by external research institutes. However, questions have been raised regarding the credibility and thoroughness of the program analyses performed by these research institutes due to various restrictions. This paper analyzes and identifies the structural limitations and problems using a systems thinking approach, and examines the systemic characteristics of the program analysis system. It also presents policy intervention recommendations based on the theory of systems thinking, a method to regularize and reinforce the program analysis system. Policy interventions recommended to ensure alignment of the external studies to the clear analysis objectives and resolve the bottlenecks in the external analysis include training those in charge of external study commissioning for a short term intervention, and increasing the number of research institutes and consulting agencies utilizing analysis and evaluation experts who transition to the private sector from the military for a long term intervention. additionally presented are strategies and policy alternatives to best utilize these policy interventions. They will contribute to the stable funding of Force Improvement Programs and efficient utilization of defense budget.

• Journal of the Korean Society of Earth Science Education
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• v.5 no.2
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• pp.175-188
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• 2012

The purpose of this study were to explore teaching method for scientific inquiry including scientific argumentation to increase students' scientific literacy. For this study, the detailed guideline including assessment frame for students' argumentation was developed and applied to seventh and ninth grade students. From this application, data were collected from the students' views by pre, post questionnaire and the teachers who had taught to their students by questionnaire including students' attitudes change and applicability. From this study, the result were following. The change of students' perceptions was revealed by questionnaire and the teachers' description. And the applicability of this teaching method was indicated by the teachers' opinion. From these findings, the method was found as applicable teaching method to teach scientific inquiry including scientific argumentation in school science.

• Journal of the Korean Society of Food Culture
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• v.16 no.1
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• pp.20-26
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• 2001

The rating instrument to evaluate the quality of nutrition information websites was developed and ten websites which were maintained by nutrition expert(s) and frequently linked to other related sites were evaluated. The rating instrument with 15 questions on credibility, content, purpose, and design was developed. Eleven college students majoring in Food and Nutrition rated each question as 'Yes', 'No', 'Cannot tell' while visiting each site. The questions rated most often as 'Yes' were 'Is it capable for a user to interact with a responsible person for the site?', 'Is the information provided by nutrition expert?', 'Does the information fit in with dietary guideline?' in the order. The questions rated most often as 'No' were 'Is the source of the information indicated?', 'Is the purpose of the site stated?', and 'Is an internal search engine working?', indicating these categories need betterment. The questions rated most often as 'Cannot tell' were 'Is the information current?', 'Is the information provider credible?', indicating that these may be difficult questions for college students to evaluate. Individuals or institutions who are providing nutrition information on the internet now or plan to provide later are expected to consider the problems pointed out in this study, and offer highly qualified information to the users in an effective way. Various rating instruments to evaluate the quality of nutrition information websites can be developed based on a variety of criteria. It is, however, to be desired that a standardized rating instrument would be developed by a leading group of nutrition experts, and the results of site review with the instrument be open to the public in order to improve the quality of Korean nutrition information on the internet.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.37 no.4
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• pp.681-691
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• 2017

In this research, life cycle inventory database (LCI DB) was developed for elastomeric bearing employing life cycle assessment (LCA) methodology additionally the reliability improvement rate in the evaluation of the environmental load of the bridge was analyzed. As are result of impact assessment by 6 major impact categories, production of elastomeric bearing puts on environmental impact in the order of resource depletion, global warming, photochemical oxidant creation. and among a wide variety of input, steel plates contributes in most of the impact categories. As a result of applying the elastomeric bearing LCI database constructed in this study, the environmental loads increased by 0.53% on average, and the cut-off based on the cost of input materials increased by 11.36%. It is anticipated that it will be possible to improve the credibility and to provide data based on current production technology, such as estimating GHG emissions and evaluating environmental load, by constructing elastomeric bearing LCI DB.

• Journal of the military operations research society of Korea
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• v.35 no.2
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• pp.51-61
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• 2009

Recently, the necessity of VV&A and the importance of M&S are increasing in the national defense area. The purpose of VV&A is to assure a proper development of M&S and to provide users with sufficient information to determine if M&S could meet their demands. Therefore, VV&A process needs to be performed to guarantee the credibility of the M&S. However, the basic guidance and regulation of VV&A are not yet developed in Korea. This paper proposed the VV&A application process in the Korean Wartime Resource Requirement Model, focusing on the close combat situation of the model. The VV&A process provided in this paper can also be applied to other analytical models currently developing in Korea.

• Informatization Policy
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• v.22 no.1
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• pp.3-27
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• 2015

The purpose of this research is to analyze research trend of 400 north korea information studies from 2010 to 2014 in korea. The research has narrowed the scope of analysis in five fields : political diplomacy, economy, the military, social culture, human rights in north korea. The result of this research shows that each field evenly counts for 20% of the entire research. According to the types of publications, not only research papers but also graduate theses and books comprise a large proportion of the north korea information study. In the past, the north korea information study focused on political diplomacy and the military, but this research revealed different outcome. Now the study of north korea information has wide variety of subject, but it requires a qualitative growth. It remains still the problem of credibility in research data.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.5
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• pp.3069-3073
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• 2014

It's now time for adopting u-Health according to development of internet. It is judged that it needs to research on effect of using internet health information targeting University students who are the most sensitive of internet health information. So we analyzed effect of using internet health information according to internal and external health control materials with 300 University students. As a result, If a rate of investment to the health is high, an effect of internet health information also increases as B=.004, rate of internal health control is high, it decreases as B=-.027 and rate of external health control is high, it increases as B=.037. For a University student who has steady faith about health and can control their internal health more easily, the effect of using internet health information has decreased. And for a University student who has high inclination of external dependence about health and can control their external health more easily, the effect of using internet health information has increased. So it needs to raise credibility, accuracy and accessibility of internet health information.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.11
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• pp.730-737
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• 2018

With the increasing number of health consumers aiming for a happy quality of life, the O2O medical marketing market is activated by choosing reliable health care facilities and receiving high quality medical services based on the medical information distributed on web's blog. Because unstructured text data used on the Internet, mobile, and social networks directly or indirectly reflects authors' interests, preferences, and expectations in addition to their expertise, it is difficult to guarantee credibility of medical information. In this study, we propose a blog reading system that provides users with a higher quality medical information service by classifying medical information blogs (medical blog, ad blog) using bigdata and MLP processing. We collect and analyze many domestic medical information blogs on the Internet based on the proposed big data and machine learning technology, and develop a personalized health information recommendation system for each disease. It is expected that the user will be able to maintain his / her health condition by continuously checking his / her health problems and taking the most appropriate measures.

• Journal of Legislation Research
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• no.54
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• pp.7-37
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• 2018

This paper examines the provisions in the current law related to impeachment and proposes the direction for legislative improvement. For this purpose, this paper first analyzed the meaning of the provisions related to the impeachment system in the present law and examined the proposed legal theory in applying it to the case. The main purpose of this review is to identify deficiencies and uncertainties in the content of the regulation of law that arise in applying the regulation of law to the cases. The following problems are presented from it.: (1) the provisions on reasons for impeachment prosecution, (2) the distinction between causes of impeachment prosecution, (3) the duty of the National Assembly to investigate the reasons for impeachment prosecution, (4) Provisions concerning the sentencing of dismiss in the impeachment decision (4) "acts of betraying the credibility of the people" as a decision on discharge, (5) provisions on a fixed number for judgment for impeachment In order to solve these problems, this paper used a comparative method to examine cases in the United States and Germany. In addition, when the legal system is heterogeneous, the constitutional ideology or values of our constitutional system are considered and the direction for the legislative improvement is suggested.