• 제목/요약/키워드: 북

검색결과 4,458건 처리시간 0.028초

Vegetation Structure of Trail Edge in the Eastern Region Chirisan National Park (지리산국립공원 동부지역 등산로 주연부식생 구조)

  • 정승준
    • Korean Journal of Environment and Ecology
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    • 제13권4호
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    • pp.309-315
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    • 2000
  • 지리산국립공원 동부지역의 등산로 주연부식생 구조 및 훼손을 파악하기 위하여 7개 등산로를 대상으로 1999년 8월에 조사를 실시한 결과는 다음과 같다 등산로 상에 나타난 주연부식생의 주요 수종으로는 철쭉꽃 미역줄나무 조록싸리 등이었다 등산로 주연부의 종다양도 식생피도 개체수는 이용객 수와 깊은 상관관계는 없는 것으로 나타났다 입지환경별 드산로 주연부식생의 종구성은 남삼면과 북사면의 중복부에서 가장유사한 반면 동사면 상복부와 북사면 산록부간에 이질적이었다 한편 남, 북 사면간 등산로 주연부식생은 각 사면 산록부에서 종구성이 가장 이질적이었다 남.북사면의 중복부에서 조록싸리 철쭉꽃이 우세하였으나 북사면 상복부에서는 철쭉꽃이 우세하게 나타났다 등산로 주연부의 식생피도 능선부 남사면 북사면 동사면 순으로 높게 나타났다.

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Efficient Codebook Search Method for AMR Speech Codec (AMR 음성 압축기를 위한 효율적인 코드북 검색 방법)

  • Lee Doyoon;Park Hochong
    • Proceedings of the Acoustical Society of Korea Conference
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    • 한국음향학회 2001년도 추계학술발표대회 논문집 제20권 2호
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    • pp.93-96
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    • 2001
  • ACELP 구조의 음성 압축기는 우수한 음질을 제공하지만 최적의 코드 벡터를 구하기 위한 계산량이 상당히 많은 단점이 있다. 이를 해결하기 위해서 본 논문에서는 AMR 음성 압축기의 코드북을 매우 효율적으로 검색하는 새로운 방법을 제안한다. 제안하는 코드북 검색 방법은 완전 순차적인 검색 방법을 사용하여 대략적인 코드 벡터를 구하고, 코드 벡터의 각 펄스들의 중요도를 계산하여 중요도가 낮은 펄스를 새로운 펄스로 교환하는 펄스 교환 과정을 수행하여 코드 벡터의 성능을 향상시키는 방법을 사용한다. 또한, AMR 음성 압축기의 구조에 맞도록 트랙별로 이동하면서 순차적으로 코드북을 검색하여 다수의 대략적인 코드벡터를 찾은 후, 각 코드 벡터에 대하여 펄스 교환 과정을 수행하여 최적의 코드 벡터를 구한다. 제안한 코드북 검색 방법을 AMR 음성 압축기의 모든 모드에 적용하여 코드북 검색을 위한 계산량과 성능을 측정하였으며, 모든 모드에 대하여 매우 적은 계산량으로 동등한 성능을 가지는 것을 확인하였다

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Educational impact of reflection activities using Facebook in university lectures (대학 강의에서 페이스북 기반 성찰활동의 효과)

  • Seo, Juyeon;Lee, Jeongmin
    • The Journal of Korean Association of Computer Education
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    • 제17권5호
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    • pp.107-114
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    • 2014
  • This study aims to investigate the effects of reflection activities on using Facebook in university lectures. To accomplish the purpose of this study, an experiment was conducted with 181 students who took a large-scale university lecture. Subjects were assigned into two groups: 90 facebook group(experimental group) and 91 cybercampus group(control group). They participated reflection activities on facebook or cybercampus during 4 weeks. Independent samples t-test with in-depth interview were employed to analyze data. The results of this study are summarized as follows: there was a statistically significant difference in learning satisfaction between facebook group and control group. Learning satisfaction of facebook group is significantly higher than that of control group because reflection activities on facebook provided to gather information on reflection and to interact with peers easily. In conclusion, these findings imply that reflection activities on facebook is effective for improving learning satisfaction of large-scale university lectures.

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Development of Pen-type Haptic User Interface and Haptic Effect Design for Digilog Book Authoring (디지로그 북 저작을 위한 펜형 햅틱 사용자인터페이스의 개발)

  • Lee, Jun-Hun;Ha, Tae-Jin;Ryu, Je-Ha;Woo, Woon-Tak
    • 한국HCI학회:학술대회논문집
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    • 한국HCI학회 2009년도 학술대회
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    • pp.402-405
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    • 2009
  • Digilog Book, the next generation publication material, supplies digitalized contents on an analog book by integrating digital contents into existing analog books. There are some studies related to authoring tools which are to authorize, and publish some books which provide digital contents by using VR or AR techniques. In this paper, a pen-type haptic user interface for Digilog Book authoring tool has been introduced. This haptic user interface is developed for more realistic and more effective authoring tasks. This haptic interface provides haptic effects for authoring tasks which are including translation, rotation, scaling, and menu selection. In this research, we designed a body, control circuits, vibration haptic patterns for haptic user interface, and a protocol for between haptic user interface and Digilog Book main control system. Also a simple user study has been done with a developed haptic user interface.

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A Study on LibraryLookup Services Using Bookmarklets (북마크릿을 활용한 LibraryLookup 서비스 제공방안에 관한 연구)

  • Gu, Jung-Eok;Lee, Eung-Bong
    • Journal of the Korean Society for information Management
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    • 제23권3호
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    • pp.49-68
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    • 2006
  • It is required to enhance the value of ISBN as a tool for book search, identification, browsing, and improve the accessability and search capability of library OPAC. Bookmarklet is a small size javascript which can be saved as URL in a web browser bookmark or web page hyperlink. Open source bookmarklet can extract ISBN from web pages and search a book from library OPAC using the ISBN, so it is recognized as a simple but powerful search tool. In foreign countries, commercial library system vendors, libraries, OCLC, etc. are providing bookmarklets which allow a user to search for library holdings and loan information in a real time while he/she is travelling in an online bookshop web page. Therefore, this paper compared and analyzed international bookmarklets application examples and proposed LibraryLookup service in which library OPAC and online bookshop can make use of the bookmarklets.

A causal model of the influence of the constituents of Facebook advertisement on the WOM intension: Ad fitness mediation effect (페이스북 광고의 구성요인이 구전의도에 미치는 인과모형: 광고 적절성인식 매개효과)

  • Yu, Seung-Yeob
    • Journal of Digital Convergence
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    • 제17권2호
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    • pp.81-89
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    • 2019
  • The purpose of this paper was to investigated the effect of the constituents of Facebook advertisement on ad fitness recognition and WOM intension. In addition, we confirmed the mediating effect of ad fitness recognition. For this purpose, data were collected for Facebook 371 users. The research method used factor analysis and covariance structure analysis. The results of this study were as follows: First, the advertising interest characteristics of Facebook ads had a significant effect on ad fitness and word-of-mouth intension. Second, personalized fit informational attributes of Facebook ads had a significant effect on ad fitness and WOM intension. Third, the perceived responsiveness had a significant effect on perceived fitness of advertisement and WOM intention. Fourth, perceived fitness recognition of Facebook advertisement had a significant effect on WOM intension. The results of this study provide consumers with information on what to consider when creating an identity advertisement and effective advertisement as Facebook advertisement.