• 제목/요약/키워드: E해 center

검색결과 9,005건 처리시간 0.037초

Development of state-of-the-art detectors for X-ray astronomy

  • Lee, Sang Jun;Adams, J.S.;Audley, H.E.;Bandler, S.R.;Betancourt-Martinez, G.L.;Chervenak, J.A.;Eckart, M.E.;Finkbeiner, F.M.;Kelley, R.L.;Kilbourne, C.A.;Porter, F.S.;Sadleir, J.E.;Smith, S.J.;Wassell, E.J.
    • 천문학회보
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    • 제40권1호
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    • pp.53.3-54
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    • 2015
  • We are developing large arrays of X-ray microcalorimeters for applications in X-ray astronomy. X-ray microcalorimeters can detect the energy of X-rays with extremely high resolution. High-resolution Imaging spectroscopy enabled by these arrays will allow us to study the hot and energetic nature of the Universe through the detection of X-rays from astronomical objects such as neutron stars or black holes. I will introduce the state-of-the-art X-ray microcalorimeters being developed at NASA/GSFC and the future X-ray observatory missions based on microcalorimeters.

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A Retrospective Study on Canine Epilepsy: Etiological Distribution, Therapeutic Outcome, and Survival Time

  • Park, Seo-Yeon;Jeong, Yoonsoo;Yun, Taesik;Jung, Dong-In;Chang, Dong-Woo;Kang, Ji-Houn;Yang, Mhan-Pyo;Kang, Byeong-Teck
    • 한국임상수의학회지
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    • 제36권3호
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    • pp.150-154
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    • 2019
  • The purpose of this study was to investigate the etiological distribution, therapeutic outcome, and survival time in canine epilepsy. The medical records of 57 epileptic dogs were reviewed for the evaluation of etiological distribution. Among them, 27 dogs (47%) and 30 dogs (52%) had idiopathic epilepsy (IdE) and structural epilepsy (StE), respectively. Twenty-nine dogs (IdE: 16 dogs, StE: 13 dogs) were evaluated for therapeutic outcome and survival time. The incidence of generalized epileptic seizure (IdE, 56% vs. StE, 44%; P = 0.043) and the median seizure frequency at the time of first presentation (IdE, 2.0/month vs. StE, 13.3/month; P < 0.01) were significantly different between the two groups. Although pre-treatment seizure frequency and duration were not different, the median duration of seizure in the IdE group (0.5 min) was significantly shorter than that in the StE group (3 min) after treatment (P < 0.01). In addition, the median frequency of seizure was relatively lower in the IdE group (0.25/month) compared to the StE group (2.00/month) following antiepileptic therapy (P = 0.053). The median survival time of the IdE group (1.5 years [95% CI, 1.0-2.3 years]) was significantly longer than that of the StE group (0.4 year [95% CI, 0.2-1.3 years]) (P < 0.01). The information on etiological data and intracranial lesions may be useful for predicting treatment response and prognosis in epileptic dogs.

eCRM 기능이 고객의 웹사이트 방문과 구매에 미치는 영향 (The Effect of eCRM Features on Website Visit and Purchase)

  • 민대환;박재홍;박철
    • 경영정보학연구
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    • 제4권2호
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    • pp.155-168
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    • 2002
  • 본 연구는 eCRM 솔루션의 기능이 고객의 사이트 방문과 구매에 미치는 영향을 분석하였다. 먼저 국내외 eCRM 솔루션을 조사한 결과, e-marketing에 속하는 캠페인 / 이벤트 마케팅, 전자우편 마케팅, 설문조사 마케팅 기능과 e-sales에 속하는 추천, 인센티브 / 할인 촉진 기능, 그리고 e-service에 속하는 전자우편 콜센터, 웹 콜센터 기능이 포함되어 있음을 파악하였다. 온라인 설문조사를 통해 수집된 146부의 자료를 분석한 결과, 캠페인 / 이벤트 마케팅, 전자우편 마케팅, 전자우편 콜센터, 웹 콜센터 기능의 경험 정도는 고객의 사이트 '방문'에 유의적인 영향을 미쳤다. 또한, 전자우편 마케팅을 제외한 캠페인 / 이벤트 마케팅, 설문조사 마케팅, 추천, 인센티브 / 할인 촉진, 전자우편 콜센터, 웹 콜센터 기능의 경험 정도는 고객의 '구매'에 유의한 영향을 미치는 것으로 나타났다. 한편 eCRM 기능들은 고객의 사이트 '방문'에는 효과가 있었지만 '구매'에는 효과가 낮은 것으로 나타났다. 이러한 결과들은 우리나라 eCRM이 고객성향에 대한 철저한 분석을 통해 실제 구매행동을 유발할 수 있도록 개발되고 구현되어야 함을 시사하고 있다.

Reactive Ion Etching Process Integration on Monocrystalline Silicon Solar Cell for Industrial Production

  • Yoo, Chang Youn;Meemongkolkiat, Vichai;Hong, Keunkee;Kim, Jisun;Lee, Eunjoo;Kim, Dong Seop
    • Current Photovoltaic Research
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    • 제5권4호
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    • pp.105-108
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    • 2017
  • The reactive ion etching (RIE) technology which enables nano-texturatization of surface is applied on monocrystalline silicon solar cell. The additional RIE process on alkalized textured surface further improves the blue response and short circuit current. Such parameter is characterized by surface reflectance and quantum efficiency measurement. By varying the RIE process time and matching the subsequent processes, the absolute efficiency gain of 0.13% is achieved. However, the result indicates potential efficiency gain could be higher due to process integration. The critical etch process time is discussed which minimizes both front surface reflectance and etching damage, considering the challenges of required system throughput in industry.