• The Bulletin of The Korean Astronomical Society
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• v.42 no.1
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• pp.52.1-52.1
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• 2017

Galaxy clusters are the most massive gravitationally bound systems and thus probably the most recent objects to form. One of promising routes to understand the assembly history of galaxy clusters is to measure observable quantities of components in clusters that are sensitive to the evolutionary state of the cluster. Recent deep observations on the nearby clusters show distinct diffuse intracluster light (ICL), that the light from stars are not bound any individual cluster galaxy, however until now this component has not been well studied due to its faint nature, with typical brightness of ~100 times fainter than the sky background. As shown in galaxy cluster simulation studies, the ICL abundance increases during various dynamical exchanges of galaxies such as the disruption of dwarf galaxies, major mergers between galaxies and the tidal stripping of galaxies. Thus, the ICL is an effective tool to measure the evolutionary stage of galaxy clusters. Moreover, the investigation of the ICL evolution mechanism will allow us understand the galaxy evolution process therein. In this pilot study, we target the Coma cluster, where the existing ICL studies are limited only in the central region. With large and uniform deep optical images from the Subaru telescope, available only recently (Okabe et al. 2014), we are developing a robust ICL measurement technique, extracting the ICL surface brightness and color profiles, which will allow us to study the origin of the ICL and its connection to the evolutionary history of the Coma cluster. For the next phase, we plan to utilize the plenty of spectroscopy data from the MMT telescope to compare ICL properties with the star formation history of the brightest cluster galaxies (BCG), and discuss the ICL formation mechanism of the Coma cluster by comparing the distribution of cluster galaxies with the distribution of diffuse light inside the Coma cluster.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.17 no.5
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• pp.137-142
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• 2017

The development of medical devices based on the theory of tranditional Korean medicine is increasing due to population aging and emerging demand for medical services. Various clinical trials are being conducted to ensure the clinical effectiveness of the developed medical devices, and the importance of systematic management of variously collected information in this process is increasing. In this paper, we designed and constructed the database that can systematically manage the medical information of the patient and the pulse measurement information in conducting clinical trials by using pulse analysis system which is a representative diagnostic method of traditional Korean medicine. The constructed database can be efficiently used for the verification of existing algorithms or developing new algorithms through the quality control of various information and measured data on clinical trials. It also has several advantages in the control of clinical data. The results of this study can contribute to the establishment of Korean medical device data standard for the construction of integrated database management system that can share information with different kind of pulse analysis system and other bio-signal measuring devices.

• Progress in Superconductivity and Cryogenics
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• v.17 no.4
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• pp.34-37
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• 2015

Developing Magnetoencephalography (MEG) based on Superconducting Quantum Interference Device (SQUID) facilitates to observe the human brain functions in non-invasively and high temporal and high spatial resolution. By using this MEG, we studied alpha rhythm (8-13 Hz) that is one of the most predominant spontaneous rhythm in human brain. The 8-13 Hz rhythm is observed in several sensory region in the brain. In visual related region of occipital, we call to alpha rhythm, and auditory related region of temporal call to tau rhythm, sensorimotor related region of parietal call to mu rhythm. These rhythms are decreased in task related region and increased in task irrelevant regions. This means that these rhythms play a pivotal role of inhibition in task irrelevant region. It may be helpful to attention to the task. In several literature about the alpha-band inhibition in multi-sensory modality experiment, they observed this effect in the occipital and somatosensory region. In this study, we hypothesized that we can also observe the alpha-band inhibition in the auditory cortex, mediated by the tau rhythm. Before that, we first investigated the existence of the alpha and tau rhythm in occipital and temporal region, respectively. To see these rhythms, we applied the visual and auditory stimulation, in turns, suppressed in task relevant regions, respectively.

• Aerospace Engineering and Technology
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• v.12 no.2
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• pp.123-130
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• 2013

Many countries tried to design the collision risk management system to protect their own satellites from collision probability due to the space debris. In this situation, KARI(Korea Aerospace Research Institute) is developing the KARISMA(KARI Conjunction Risk Management System) to protect our operating satellites from these space debris. The quality of this system is depending on the accuracy of orbit determination for the space debris which has collision risk. Therefore, this system must treat many kinds of measurement data types to estimate the orbit of space debris. In this paper, to handle the radar observation data widely used for these space debris, the orbit determination system was applied with simulated radar tracking data for the KOMSAT-2 which has precise orbit determination data.

• Journal of Korean Society of Forest Science
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• v.101 no.4
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• pp.606-612
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• 2012

We developed four qualitative criteria for evaluating Indonesia's REDD+ strategy by analysing REDD+ related decisions from the Cancun agreements adopted by the 16th Conference of the Parties under the United Nations Framework Convention on Climate Change (UNFCCC), and the important elements developed by Norway's International Climate and Forest Initiative to evaluate Indonesia's REDD+ strategy: (1) Criterion 1 is assessing how accurately the developed strategy identifies substantial underlying and direct causes of deforestation and forest degradation; (2) Criterion 2 is whether the strategy establishes a scientifically reliable national-level MRV (Measurement, Reporting and Verification) system; (3) Criterion 3 is whether the strategy achieves real greenhouse gas emissions reductions; and (4) Criterion 4 is whether the strategy includes safeguards to ensure equity and co-benefits from REDD+ related projects for relevant stakeholders, in particular local communities and indigenous peoples. Criteria 1 and 2 can be the fundamental bases of real GHG emissions reduction (Criteria 3). Criteria 3 is recognised as the ultimate objective of REDD+. Criterion 4 is for both bases of the effective GHG emission reduction and complementary objective of REDD+. These criteria and indicators developed can provide basic framework to understand their REDD+ national strategies of the other developing countries as well as Indonesia.

• Journal of the Korean Home Economics Association
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• v.44 no.1 s.215
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• pp.59-74
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• 2006

As an exploratory inquiry prior to developing a measure to assess Korean families with adolescents' family resilience, this study examined the construct validity of the family resilience measures that were developed in the U. S. Iowa Youth and Families Project(Conger & Elder, 1994): emotional support between spouses, problem solving style between spouses, and parenting behavior. The participants were 277 pairs of middle aged, middle class husbands and wives (554 individuals) who were the parents of first graders in middle schools in the metropolitan areas around Seoul. The results of exploratory and confirmatory factor analysis supported the construct validity, indicating that emotional support, problem solving style, and parenting behavior may be used as measures to assess Korean family resilience. However, further tests of convergent validity using various assessment methods and analytical procedures are needed to ensure the construct validity of family resilience measures.

• Korean Journal of Adult Nursing
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• v.21 no.1
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• pp.77-85
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• 2009

Purpose: This study aimed to identify the difference of sexual knowledge, attitudes, and behavior of college students who fulfilled military service and those who did not, for providing basic data for developing nursing interventions for the college students. Methods: This study used a descriptive research design. The subjects of this study were 3,741 male college students. Data were collected through personal interviews using questionnaires from November to December 2007. The sexual knowledge, attitudes, and behavior measurement tool was used. The collected data were analyzed by descriptive statistics, t-test and chi-square test. Results: The major findings of this study were as follows: 1) There was a statistically significant difference in sexual knowledge of contraception / abortion(p = .002, t = 3.16), venereal disease(p = .006, t = .2.73), sexual attitude of sexual behavior(p = .002; t = 3.13) and sexual double think(p = .047, t = 1.98) according to military service 2) There was a statistically significant difference in sexual behavior experience frequency of 9 items(friendship with opposite sex, kiss / embracing, petting, porno magazine / porno video contact, masturbation, sexual intercourse via anus, sexual intercourse via mouth, cause pregnancy, cause abortion: p < .000, $x^2$ = 39.47; p < .000, $x^2$ = 55.88; p < .000, $x^2$ = 46.76; p = .034, $x^2$ = 6.77; p = .017, $x^2$ = 12.05; p = .003, $x^2$ = 14.24; p < .000, $x^2$ = 47.70; p < .000, $x^2$ = 23.86; p < .000, $x^2$ = 21.84) respectively according to military service. Conclusion: The results of this study indicate that sexual knowledge, attitudes and behavior differ before and after the experience of military service, so further study for detecting military sex culture character effecting difference in sex knowledge, attitudes and behavior is needed.

• Fashion & Textile Research Journal
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• v.13 no.4
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• pp.614-623
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• 2011

The purpose of this study is to develop a wedding dress basic torso pattern and sleeve pattern considering good fit and aesthetic for figures of Korean brides in their 20s. For the research method, 3 women in their 20s who has the body size of ${\pm}$ S.D range of average figure and dress form suggested by 'the 5th human body measurement' of Size Korea were selected as the test group. The evaluators are 8 clothing construction majors, and the evaluation items included total 22 questions related to torso and total 10 questions related to sleeves. The evaluation was made using 5 Likert point scale. 4 prototypes for basic dress pattern were selected through the literature search. After compare analyzing design methods of prototypes, the real wedding dresses were made in the average size of women in their 20s and the dresses were tried on for the assessment. The data was analyzed using SPSS 18.0 Program to examine average, standard deviation and significant differences between basic patterns. Based on the results of the first and the second try-on assessments, a new wedding dress basic pattern with maximized strengths of compared prototypes was completed. The details of result follows. As for dress torso basic pattern, A pattern, which had the highest overall silhouette satisfaction and scores in basic pattern analysis and try-on assessments, was selected as the prototype, and a research basic pattern reflecting strengths of each basic pattern was developed. As for dress sleeve basic pattern, B pattern, which had the highest overall silhouette satisfaction and scores in basic pattern analysis and try-on assessments, was selected as the prototype, and a research basic pattern reflecting strengths of each basic pattern was developed. In this study, a wedding dress basic pattern considering good fit and aesthetic for figures of Korean brides in their 20s was suggested. It is expected that the basic pattern will be used by continuously developing dress market and ready-made wedding dress manufacturers as well as in educational institutes.

• Information Systems Review
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• v.3 no.2
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• pp.289-303
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• 2001

The online stock transactions are gaining popularity at an incredible speed these days as more and more investors are adopting Internet as a new and convenient way of handling such transactions. As a consequence, the market for online stock exchange services is getting increasingly competitive; measuring and managing the quality of such services have become a crucial issue to the survival and growth of the stock brokerage houses. Unfortunately, however, little research effort to date has been made as to developing a set of valid and reliable measures for assessing investor perceptions of the quality of the online stock exchange service. The present study generates and tests a new set of multi-item measures for the quality of the online stock exchange service from an investor's perspective. This set of measures can be used in various stages and aspects of formulating online marketing strategies for stock brokerage firms. Marketing implications of this instrument for service providers are discussed.

• Asian Oncology Nursing
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• v.11 no.3
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• pp.247-253
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• 2011

Purpose: The purpose of the study was to evaluate the accuracy of two different fluid intake measurement methods (fluid only vs. all dietary intake) in measuring fluid balance compared to body weight change among patients with cancers. Methods: A total of 60 cancer patients in an urban cancer center in South Korea participated in the study. Adult patients who were over 18 years old; having 24-hour I&O order; and taking either normal regular diet or soft blend diet were included. Demographic information and disease related information were also gathered. The data were analyzed using SPSS 18.0 program. Results: Measuring 'fluid only' for oral intake was a more accurate measure than measuring 'all dietary intake' (p=.026 vs. p=.094). Both methods had positive correlations with the amount of weight change (r=.329, p=.010; r=.303, p=.019). Measuring body weight was a more accurate and efficient way of evaluating the fluid balance than 24 hour cumulative I&O. Conclusion: Developing clinical manual for selecting proper patients who needs fluid balance monitoring is imperative. Administering weight check and/or 24 hour cumulative I&O should be considered thoroughly based on solid nursing evidence in future.