• 천문학회보
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• 제43권1호
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• pp.34.2-35
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• 2018

Galaxy transition from star-forming to quiescent, accompanied with morphology transformation, is one of the key unresolved issues in extragalactic astronomy. Although several environmental mechanisms have been proposed, a deeper understanding of the impact of environment on galaxy transition still requires much exploration. My Ph.D. thesis focuses on which environmental mechanisms are primarily responsible for galaxy transition in different environments and looks at what happens during the transition phase using multi-wavelength photometric/spectroscopic data, from UV to mid-infrared (MIR), derived from several large surveys (GALEX, SDSS, and WISE) and our GMOS-North IFU observations. Our multi-wavelength approach provides new insights into the *late* stages of galaxy transition with a definition of the MIR green valley different from the optical green valley. I will present highlights from three areas in my thesis. First, through an in-depth study of environmental dependence of various properties of galaxies in a nearby supercluster A2199 (Lee et al. 2015), we found that the star formation of galaxies is quenched before the galaxies enter the MIR green valley, which is driven mainly by strangulation. Then, the morphological transformation from late- to early-type galaxies occurs in the MIR green valley. The main environmental mechanisms for the morphological transformation are galaxy-galaxy mergers and interactions that are likely to happen in high-density regions such as galaxy groups/clusters. After the transformation, early-type MIR green valley galaxies keep the memory of their last star formation for several Gyr until they move on to the next stage for completely quiescent galaxies. Second, compact groups (CGs) of galaxies are the most favorable environments for galaxy interactions. We studied MIR properties of galaxies in CGs and their environmental dependence (Lee et al. 2017), using a sample of 670 CGs identified using a friends-of-friends algorithms. We found that MIR [3.4]-[12] colors of CG galaxies are, on average, bluer than those of cluster galaxies. As CGs are located in denser regions, they tend to have larger early-type galaxy fractions and bluer MIR color galaxies. These trends can also be seen for neighboring galaxies around CGs. However, CG members always have larger early-type fractions and bluer MIR colors than their neighboring galaxies. These results suggest that galaxy evolution is faster in CGs than in other environments and that CGs are likely to be the best place for pre-processing. Third, post-starburst galaxies (PSBs) are an ideal laboratory to investigate the details of the transition phase. Their spectra reveal a phase of vigorous star formation activity, which is abruptly ended within the last 1 Gyr. Numerical simulations predict that the starburst, and thus the current A-type stellar population, should be localized within the galaxy's center (< kpc). Yet our GMOS IFU observations show otherwise; all five PSBs in our sample have Hdelta absorption line profiles that extend well beyond the central kpc. Most interestingly, we found a negative correlation between the Hdelta gradient slopes and the fractions of the stellar mass produced during the starburst, suggesting that stronger starbursts are more centrally-concentrated. I will discuss the results in relation with the origin of PSBs.

• 복식
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• 제1권
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• pp.131-150
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• 1977

The new sense of costume is controlled by silhouette. The sense of the times is sensitively reflected in silhouette. For we can perceive the transition of the times through silhouette it is significant to know what course of changes the western costume, which almost became the international costume today, had been going through. I began with the definition and condition of silhouette in this study of silhouette. I took a general survey of silhouette study-ing various kinds of silhouette and the relation between the material and silhouette. I sought the factors which causec the changes in costume and also studies the process of the changes The process of the costume changes is studied by the order of ancient times, mediaeval times, mordern ages and present days. I selected one representative silhouette of women's costume of each period. The darpery form of the ancient time's costume became the tunic form and the tunic form became the tight tunic form today. From this we can perceive that the Gothic period was the limitation of westrn costume. It means that the ancient times was the period of drapery, the midiaeval times was the period of transition from tunic into tight tunic and the modern ages is the period of development of tight tunic. In Egyptian period thin materials were used for costume which was worn in exposed style. In Greek period the costume had the drapery style. The Roman's magnificent costume resembled the Greek's. The mediaeval costume was formed in Byzantium where the northern Europe style of costume was mixed with the gay oriental costume. The Romanesque and Gothic period followed the Byzantine period completing the midiaeval costume. Tight tunic is developed in modern ages. Italian fashion of tight tunic was the first fashion of the modern ages. Germanic and spanish fashion came after it. As Baroque period opened the French royal costume became magnificent and added Brition fashish to it. With the commencement of the modern ages the royal fashion came to an end. Modernages became peaple's period and the costume was simplified. After the First world wav designers and fashion books appeared with the development of technology. Thus the period of fashion industry came. For the designers in 20th country competed to create new designs, the fashion was changed year by year. The simplicity and practicality are not ignored in design, arid the designers added more atristic sense to dresses.

• 미생물학회지
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• 제45권1호
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• pp.86-90
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• 2009

식용얼음은 식품의 제조 가공 조리 등에 직접 사용하거나 그대로 먹기 위해 먹는 물을 얼린 얼음을 뜻하며 얼음의 제조 및 판매 과정에서 미생물이 교차 오염되면 식중독 및 장염을 유발한다. 또한 식용얼음 뿐만 아니라 상수계통, 약수물, 상수와 냉온수기의 정수된 물에서도 여러 가지 원인에 의해서 세균이 증식하는 것으로 나타났다. 이런 이유로 대구시 북구지역에서 생산되는 식용얼음의 위생 상태를 살펴보고자 무작위로 15곳을 선정하여 Brain Heart Infusion 배지에서 세균을 배양한 결과 1곳을 제외한 14곳의 검체에서 균이 증식 되었고 그람염색 결과, 그람음성간균이 80% 차지하였고 그람양성구균 17% 그리고 그람음성구균 3%의 분포를 나타냈다. 그람음성간균의 잠정적인 동정방법으로 API 20E kit와 API 20NE kit를 이용한 결과 Enterobacter cloacae, Chryseomonas luteola, Pantoea spp., Klebsiella pneumoniae, Acinetobacter baumannii, Acinetobacter calcoaceticus, Providencia rettgeri 등이 검출 되었다. 5곳에서 분리된 그람양성구균을 API Staph kit를 이용한 잠정적 동정결과 L업소에서 분리된 균은 식중독을 일으키는 병원성이 강한 Staphylococcus aureus로 동정되었다. 본 연구에서는 대구시 북구 지역의 식용 얼음류에 존재하는 일반세균 및 병원성 세균의 분포를 조사함으로 식용얼음의 위생 상태에 대한 주의를 부각시키고 나아가 대구시 타지역의 식용얼음에 대한 세균분포 조사 및 위생상태 점검에 대한 필요성을 시사한다.

• 정보화정책
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• 제27권3호
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• pp.82-111
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• 2020

최근 빅데이터 활용의 영향요인으로 개인정보 규제요인과 가명정보 결합이 핵심 정책수단으로 등장하고 있다. 본 연구는 개인정보 규제요인과 빅데이터 활용의 관계에서 제3의 변수로서 가명정보 결합의 매개효과 및 조절효과를 실증분석하였다. 분석결과, 첫째, 개인정보 규제요인 중 개인정보 정의, 개인정보 동의, 법령위반 처벌강도 요인이, 그리고 가명정보 결합요인 중 결합 비식별성, 결합 가명정보 표준화, 결합 책임성이 빅데이터의 활용에 정(+)의 유의한 관계를 보였다. 둘째, 가명정보 결합 요인 중 결합 비식별성, 결합 가명정보 표준화, 결합 책임성이 개인정보 규제요인과 빅데이터 활용과의 관계에서 정(+)의 매개효과를 보였다. 셋째, 개인정보 규제요인과 빅데이터 활용과의 관계에서 가명정보 결합기관 유형인 자유형, 중개형, 지정형의 순서에 따라 조절효과가 다를 것이라는 가설은 기각되었다. 이상의 분석결과를 기반으로 개인정보 보호와 빅데이터 활용이 조화를 이루는 '착한규제'의 정책대안을 제시하였다.

• 한국사회복지학
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• 제56권1호
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• pp.5-22
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• 2004

오늘날 노인관련 정책에서 핵심적인 주제는 노인독립이다. 본 연구는 독립의 의미가 충분히 검토되지 않은 채 유행처럼 번지고 있는 현 시점에서 우리는 어떤 의미의 독립에 대해 이야기하고 있고, 정책을 통해 구체화되고 있는 독립이 실제 노인들의 관점을 어느 정도 정확히 반영하고 있는지를 검토하고자 하였다. 이 연구 목적을 달성하기 위해 10명의 노인들을 대상으로 독립, 의존, 삶의 질 등에 대한 노인들의 주관적 의미를 조사하였다. 연구의 결과, 일반적으로 주장되고 있는 노인들의 경제적 독립, 공간적 독립, 신체적 자립 등은 노인들에게 외형적인 현상에 불과했다. 노인들은 이러한 독립을 구성하는 보다 내밀한 의미들을 언급하였는데, 그들이 인식하는 독립의 개념은 사생활, 자존감, 자율성, 자유 등의 핵심적 개념들로 구성된 복합적인 의미를 담고 있었다. 의존에 대한 인식 또한 사회적 고정관념과 상당한 차이를 보이고 있었으며, 의존은 독립과 마찬가지로 그들 경험이 존중되는 삶의 한 방식이었다. 이러한 연구 결과를 놓고 볼 때, 독립, 참여 등과 같은 개념으로 노인의 사회적 지위를 높이려는 최근의 정책은 여전히 노인의 관점을 충분히 반영하고 있지 못함을 보여주었다.

• 천문학회지
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• 제47권2호
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• pp.77-86
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• 2014

Using a cosmological ${\Lambda}CDM$ simulation, we analyze the differences between the widely-used spin parameters suggested by Peebles and Bullock. The dimensionless spin parameter ${\lambda}$ proposed by Peebles is theoretically well-justified but includes an annoying term, the potential energy, which cannot be directly obtained from observations and is computationally expensive to calculate in numerical simulations. The Bullock's spin parameter ${\lambda}^{\prime}$ avoids this problem assuming the isothermal density profile of a virialized halo in the Newtonian potential model. However, we find that there exists a substantial discrepancy between ${\lambda}$ and ${\lambda}^{\prime}$ depending on the adopted potential model (Newtonian or Plummer) to calculate the halo total energy and that their redshift evolutions differ to each other significantly. Therefore, we introduce a new spin parameter, ${\lambda}^{\prime\prime}$, which is simply designed to roughly recover the value of ${\lambda}$ but to use the same halo quantities as used in ${\lambda}^{\prime}$. If the Plummer potential is adopted, the ${\lambda}^{\prime\prime}$ is related to the Bullock's definition as ${\lambda}^{\prime\prime}=0.80{\times}(1+z)^{-1/12}{\lambda}^{\prime}$. Hence, the new spin parameter ${\lambda}^{\prime\prime}$ distribution becomes consistent with a log-normal distribution frequently seen for the ${\lambda}^{\prime}$ while its mean value is much closer to that of ${\lambda}$. On the other hand, in case of the Newtonian potential model, we obtain the relation of ${\lambda}^{\prime\prime}=(1+z)^{-1/8}{\lambda}^{\prime}$; there is no significant difference at z = 0 as found by others but ${\lambda}^{\prime}$ becomes more overestimated than ${\lambda}$ or ${\lambda}^{\prime\prime}$ at higher redshifts. We also investigate the dependence of halo spin parameters on halo mass and redshift. We clearly show that although the ${\lambda}^{\prime}$ for small-mass halos with $M_h$ < $2{\times}10^{12}M_{\odot}$ seems redshift independent after z = 1, all the spin parameters explored, on the whole, show a stronger correlation with the increasing halo mass at higher redshifts.

• 동국한의학연구소논문집
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• 제3권
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• pp.237-267
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• 1994

The purpose of this study is the approach to I.I.C.P. centered on the meaning of consciousness disorder and the pathological aspect of Kwul (Jose consciousness ; faint, fall into a coma). The meaning of consciousness disorder and apoplexy is evidently involved the definition of Kwul. 1. It is found that the etymological interpretation on Kwul which the energy rises back to go through blocked space and the meaning interpretation of regarding Kwul as apoplexy with medical viewpoint, are related with consciousness disorder and motor disturbance in IICP in the aspect of the rise of Kwul and the abnormal rising of vital energy and blood, In addtion, the overall of meaning of Kwul is showed in table <1-1> by reference to doctors of many generations, 2. The pathology of Kwul includes abnormal rising, sthenia-syndrome in the upper part and asthenia in the lower, the origin of Kwul, the lower, looking like Yin by too sthenic Yang and looking like Yang by too sthenic Yin. The headache, vomiting, papilledema, paralysis of nervi craniales, coma, blood pressure rising, tachycardia by I.I.C.P can be regarded as a conception of trouble of vital energy, sthenia-syndrome of Kwul. The pulse pressure, brachycardia, bradypnea can be regarded as the conception of looking like Yin by too sthenic Yang. 3. In the emergency of Kwul, the abnormal ternimal reversion of the Kwulyin channel, Kuyang channel, and three Yins are related with the phenomenon in I.I.C.P. It is considered that the reverse movement of materials, I.I.C.P. can be closely observed by giving meaning on the meridian of Kwul in Somunkwulron. And the content of phrases of Naelyung which includes consciousness disorder refered in the chapter of Kwul, is compared with I.I.C.P. 4. The followings should be considered; examination of optic symptom and abnormal posture in cerebral herniation ; understanding and working out counterplans of factors and symptoms of consciousness disorder by the observation of vital sign, check of general stages, neurologic inverstigation, clinical diagnosis, and subsidiary diagnosis; application of morphological change of opinion; addtion of the conception of demonstration centered on Yunkyung, Samyinkwulruk, asthenia and thenia of healthy energy in oriental medicine. 5. The similarity of Kwul and I.I.C.P. can be found from etiology and pathotenic factor. The similarity is clearly found by investigation of etiology, pathotenic factor, symptoms and thrapy of Kwul, disease symptom ar.d other symptoms.

• 유통과학연구
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• 제13권1호
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• pp.57-70
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• 2015

Purpose - Open source software has high utilization in most of the server market. The utilization of open source software is a global trend. Particularly, Internet infrastructure and platform software open source software development has increased rapidly. Since 2003, the Korean government has published open source software promotion policies and a supply promotion policy. The dynamism of the open source software market, the lack of relevant expertise, and the market transformation due to reasons such as changes in the relevant technology occur slowly in relation to adoption. Therefore, this study proposes an assessment model of services provided in an open source software service company. In this study, the service level of open source software companies is classified into an enterprise-level assessment area, the service level assessment area, and service area. The assessment model is developed from an on-site driven evaluation index and proposed evaluation framework; the evaluation procedures and evaluation methods are used to achieve the research objective, involving an impartial evaluation model implemented after pilot testing and validation. Research Design, data, and methodology - This study adopted an iteration development model to accommodate various requirements, and presented and validated the assessment model to address the situation of the open source software service company. Phase 1 - Theoretical background and literature review Phase 2 - Research on an evaluation index based on the open source software service company Phase 3 - Index improvement through expert validation Phase 4 - Finalizing an evaluation model reflecting additional requirements Based on the open source software adoption case study and latest technology trends, we developed an open source software service concept definition and classification of public service activities for open source software service companies. We also presented open source software service company service level measures by developing a service level factor analysis assessment. The Behavior-Structure-Evolution Evaluation Model (BSEM) proposed in this study consisted of a rating methodology for calculating the level that can be granted through the assessment and evaluation of an enterprise-level data model. An open source software service company's service comprises the service area and service domain, while the technology acceptance model comprises the service area, technical domain, technical sub-domain, and open source software name. Finally, the evaluation index comprises the evaluation group, category, and items. Results - Utilization of an open source software service level evaluation model For the development of an open source software service level evaluation model, common service providers need to standardize the quality of the service, so that surveys and expert workshops performed in open source software service companies can establish the evaluation criteria according to their qualitative differences. Conclusion - Based on this evaluation model's systematic evaluation process and monitoring, an open source software service adoption company can acquire reliable information for open source software adoption. Inducing the growth of open source software service companies will facilitate the development of the open source software industry.

• 한국엔터테인먼트산업학회논문지
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• 제15권1호
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• pp.99-115
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• 2021

본 연구는 스포츠 산업 발달에 따른 사회적 변화에 주목하고 이에 부응하는 새로운 체육 교육의 필요성을 인식함에 따라 먼저, 학점은행제 체육계열의 교과과정 운영현황을 파악하고, 나아가 스포츠 산업에서 요구하는 전문인 양성을 위한 교과과정 개선 방안을 모색하였다. 이를 위한 선행 연구로써 스포츠 산업계의 융·복합적인 변화를 반영한 미국 대학의 체육 교과목과 국내 정규대학의 교과목을 조사하였다. 이에 현행 학점은행제 체육계열의 운영실태에 관한 내용은 다음과 같다. 첫째, 학점은행제의 정의/학점인정 대상 및 체육계열의 교육훈련기관 조사, 둘째, 체육계열 표준교육과정의 전공별 교육목표 및 자격과 인정학점 현황 조사, 셋째, 체육계열 학위별 교육기관의 유형과 운영 중인 전공 현황 조사, 넷째, 체육계열 교육기관의 지역별 운영기관의 현황 조사, 다섯째, 체육계열의 전공별 세부교과 분류 및 전공별 과목 현황 조사, 여섯째, 체육계열의 전공별 세부교과 및 국·내외 스포츠 산업 교과의 일치·유사 교과목을 비교 분석하였다. 이를 통하여 학점은행제 교과과정의 다음과 같은 개선 방향을 제시하였다. 첫째, 사회변화에 맞춘 전공 교과목을 신설해야 한다. 둘째, 시대적 요구에 부응하는 세부 전공별 필수 및 선택 교과목을 수정, 개발해야 한다. 셋째, 스포츠 산업계의 요구를 충족시킬 수 있는 현장실습 중심의 교과목을 늘려야 한다. 넷째, 학점은행제의 평가인정과 관련하여 제도적 개선이 시급히 이루어져야 한다는 결과를 도출하였다.

• 말소리와 음성과학
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• 제14권4호
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• pp.57-66
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• 2022

본 연구는 '디지털 치료제'의 정의를 확인하기 위해 이와 관련된 연구들을 통해 확인해보고, 디지털 치료제의 개발 동향을 국내 수준에서 조사해 보았다. 그리고 2015년 이후 연구 자료를 대상으로 디지털 치료제가 의사소통장애 분야에서 언어장애와 말장애 대상자들 중 어떤 장애 분야에 적용된 연구가 진행되어 왔는지 그리고 어떠한 기술이 적용된 연구가 이루어 왔는가 역시 분석해 보았다. 그 결과 디지털 치료제는 소프트웨어라는 점, 예방·관리·치료하기 위해 환자에게 적용되는 소프트웨어적인 치료제이며 근거 기반 치료를 제공하는 소프트웨어로 정의할 수 있다. 디지털 치료제와 관련해서 엄청난 투자를 진행하고 있고 이와 더불어 관련된 연구도 지속적으로 증가하고 있음을 확인할 수 있었다. 다음으로 의사소통장애 대상자에게 디지털 치료제를 적용한 2015년 연구 사례를 분석한 결과 언어장애에 해당하는 연구가 전체 22편 중에서 17편으로 주를 이루었고, 말장애 분야 연구, 일반아동을 대상으로 한 연구, 전문가를 대상으로 한 연구가 있었다. 디지털 치료제에 적용될 수 있는 다양한 기술 중 가장 많이 적용된 기술은 가상현실과 증강현실이었다. 가상현실보다는 증강현실을 적용한 연구가 대부분이었음을 확인할 수 있었고 AI를 적용한 연구도 있었다. 그리고 디지털 치료제의 적용 후 효과는 대부분 긍정적으로 나타났고, 디지털 치료제 개발과 관련해서 대부분은 콘텐츠 개발에 중점을 두고 있으나 한 편의 연구는 앱 개발을 위해 진행된 연구다. 향후 연구에서는 보다 다양한 의사소통장애 대상자에게 적용 가능한 소프트웨어를 개발하고 보다 광범위한 기술을 적용한 연구들이 꾸준히 이루어지고 이러한 분야에 대한 정부의 적극적인 지원도 이루어지기를 기대해 본다.