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Search Results: 1 - 10 of 91396 matches for " CHEN Ya-Ning "
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後設資料註冊中心現況發展之研究 A Review on Metadata Registries Development
Ya-ning Chen
Journal of Educational Media & Library Sciences , 2004,
Abstract: 本文研究目的在探討國際上現有metadata registries的設計與發展,以達成metadata標準相關資訊的再利用與互通性。本文採取個案研究法,以數位圖書館metadata為範圍,選取12個研究樣本進行分析。本文研究發現主要有五項:第一,多數metadata registries (MDRs)已臻至機讀的階段。第二,涵蓋標準數量上有單一與多數兩種。第三,描述對象除了以典藏品為主外,也擴及至人與機構;資訊單元(information granularity)主要包含標準、元素與控制詞彙三個層級。第四,所有MDRs皆對metadata元素間的關係加以標引,只有一些針對標準與元素間的關係予以建立,甚至展延至控制詞彙,而這些MDRs通常不採用ISO/IEC 11179。第五,發展MDRs有兩大取向,一是採取資料元素方式,通常採用ISO,資料描述十分詳盡;二是採取metadata元素方式,資料描述十分簡易。 How to reuse and interoperate the information between various metadata standards becomes an important issue for digital library projects and metadata registries (MDRs) are employed as a workable approach around the world. This paper aims to take a review on current development of MDRs, by adopted case study as research methodology to examine twelve cases. Consequently, five findings are offered in the following:1. most MDRs can be generalized into machine readable MDRs. 2. Some MDRs include elements from a single standard, and some from multiple ones. 3. MDRs focus on cultural heritage objects, but now has been expanded to include institutes and users.Information granularity that MDRs handle is generalized into metadata standard,element and encoded scheme. 4. Relationships between elements are common to all practices, but relationships between standards, elements and encoded schemes are not applied to all. 5. The approach of MDRs description is toward two types: data elements and metadata elements. The former one has a preference for comprehensive description,and the latter one is toward appropriate description for practical requirements and is separated into various identities instead of all in one.
建立圖書館自動化系統的標準評鑑模式 Building a Standard Evaluative Model for Library Information System
Ya-ning Chen
Journal of Educational Media & Library Sciences , 2002,
Abstract: 無 Library automation has been developed for 30 years nearly in Taiwan since 1973. after a serious literature review on the topic of library automation evaluation in Taiwan, only several papers have been discussed, but most for them focus on case study. This paper aims to construct a standard evaluative model for library automation system both for selection and usage. The proposed model is composed of four key components by follows: identifying the past and current trends, four facets and related content of evaluation model, evaluation principles, methods and criteria, as well as the model is exemplified into four stages. Finally, additional five issues are raised as a conclusion: cost benefits and efficiency, risk distributed, partnership relation, and librarians' skills and ability.
圖書資訊系統的演變與發展 Evolutional Development of Library Information Systems
Hong-Chu Huang,Ya-Ning Chen
Journal of Educational Media & Library Sciences , 2010,
Abstract: 圖書資訊系統是圖書館作為徵集、組織與服務圖書資訊資源的重要工具,隨著資訊技術的發展,圖書資訊系統也從傳統的卡片目錄逐漸蛻變成不同的多元樣貌,如整合式圖書館系統、聯合目錄、電子資源管理系統、亞馬遜網路書店與Google圖書等。本文旨在探討圖書資訊系統的歷史發展與未來方向,採取個案研究為方法,以主要趨勢的演變歷程為主軸,依序選取4類14個案進行討論,分析各式圖書資訊系統的特色,進而從物件類型、物件精細度、資源範圍、組織方式、聚合方式、聚合資源、呈現方式、軟體導入模式、社會化線上目錄、設計方式、運作方式與取用方式等12種觀點提出研究發現與建議。 Library information systems are an essential tool for libraries to acquire and organize information resources to deliver services to users. With advancement of information technologies, library information systems have also evolved from card catalogue into diverse ones, such as integrated library system, elec- tronic resource management system, Amazon.com and Google Books. This article aims to review the historical development of library information systems as a basis to explore the future landscape of library information systems. Case study is adopted as research methodology to analyze fourteen library informa- tion systems. Furthermore, research findings and discussions are organized in the following points: type, granularity, boundary, organization and aggrega- tion of object, and representation of information resources, as well as software implementation, social OPAC, software design, operation model, and access.
數位圖書博物館的資訊基礎建設──中央研究院Metadata的規劃設計與實施 | Metadata Practice for the Digital Library──A View from Academia Sinica
陳亞寧等 Ya-ning Chen et al.
Journal of Library and Information Science , 1999,
Abstract: 頁次:71-90 面對日益增多的資訊組織需求,已有許多單位從事詮釋資料(Metadata) 的制訂與應用,同時也成為各國數位圖書博物館計畫中的必備研究項目之一。然而,在眾多各式詮釋資料格式元素中,如何選取一套適用的詮釋資料,卻是極為不易。本文主旨在於以中央研究院個案研究為例,探緊詮釋資料的發展設計、規畫分析與實施應用。本文共分為六部份,計有計畫緣起、文獻探討與分析(包括詮釋資料的定義、發展方式、範團與功能、形態、元素的屬性與發展途徑及選擇與評鑑)、實施方式、研究成果、研究發現及結語等。 Nowadays diverse metadata formats have been developed and used to organize the digital information and achieve resources discovery. It seems to be a dilemma how to apply specific metadata format to accommodate all different contents similar to Academia Sinica situation. The purpose of this paper will first take a literature review on state-of-the-art of metadata. Then authors will explain how Academia Sinica develops a me1ada1a framework environment to integrate any current metadata formats into a common model. Finally, the paper will clarify the research results and findings, and suggest the future research for Academia Sinica.
WATER TABLE AND THE DESERT RIPARIAN FOREST COMMUNITY IN THE LOWER REACHES OF TARIM RIVER, CHINA
新疆塔里木河下游荒漠河岸(林)植被合理生态水位

HAO Xing-Ming,LI Wei-Hong,CHEN Ya-Ning,
HAO Xing-Ming
,李卫红,CHEN Ya-Ning

植物生态学报 , 2008,
Abstract: 该文依据塔里木河下游地下水位多年监测资料, 将地下水位按不同埋深划分为0~2、2~4、4~6、6~8、8~10和>10 m 6个梯度, 并设置植 被调查样方进行连续监测, 以分析地下水位变化对植物物种多样性与种群生态位的影响。研究结果表明: 在地下水位2~4 m时, 物种多样性最高 , 其次为4~6 m, 再次为0~2 m; 当地下水位在6 m以下时, 物种多样性锐减, Hill多样性指数曲线变化趋势趋于平直化。荒漠河岸(林)植被主要 植物种群生态位随着地下水位的逐步下降而扩展, 并在地下水位4~6 m处达到最宽; 尔后, 生态位又显著变窄; 地下水位4~6 m时, 种群间生态 位重叠最不显著, 物种数较为丰富。因此, 该文分析得出结论: 塔里木河下游植被恢复的地下水位应确保达到6 m以上, 大部分地区地下水位应 维持在4~6 m, 而部分河道附近地区地下水位争取达到2~4 m。
Analysis of oasis evolution and suitable development scale for arid regions: a case study of the Tarim River Basin
干旱区绿洲演变与适宜发展规模研究 --以塔里木河流域为例

CHEN Ya-Ning,CHEN Zhong-Sheng,
陈亚宁
,陈忠升

中国生态农业学报 , 2013,
Abstract: Water is the core of the development and existence of oasis, which is itself the carrier of arid human activities. Therefore, scale and sustainability issues of oasis are closely related with the availability of water in arid regions. This paper examined the Tarim River Basin (TRB) in the arid northwest China as a case study. Based on principles of water and heat balance, a mathematical model for suitable scales of oases was established. The model was used to calculate oasis suitable scale by combining with current hydro-meteorological data. The results indicated that: 1) Because of comprehensive impacts of natural and human factors, oases were still in the process of evolution in time and space. 2) Changes in water resources were the direct driving factors of oasis evolution in both time and space. 3) Water resources were the root restrictive factors of oasis development. With the current water resources supply, available water resources had reached the limit of sustaining the largest oasis scale, and the current cultivated land areas were especially unfavorable to expand for the current oasis scale. Finally, sustainable control measures for stable oasis (e.g., development of water-saving industries, improved irrigation modes, regulated runoff engineering and increased groundwater resources utilization) were put forward. These measures were expected to provide the scientific basis for sustainable management of oasis in arid regions.
DSpace 跨機構虛擬儲存庫之可行性研究 The Feasibility Study of DSpace towards a Virtual Cross-Institutional Repository
Ya-Ning Chen,Shu-Jiun Chen,Feng-Chien Chung
Journal of Educational Media & Library Sciences , 2004,
Abstract: DSpace已被學術機構廣泛使用,以達到資訊之管理與再利用的工具軟體。本文選擇數位典藏國家型科技計畫後設資料工作組(Metadata Architecture and Application Team, MAAT)網站為研究案例,來檢驗 DSpace系統是否適用於跨組織虛擬數位典藏庫的可行性議題。MAAT網站是一個靜態網站,其中包含全台灣各個機構不同的數位圖書館計畫所產生的大量文件。本研究歸納出,若DSpace的某些功能能提供更有彈性的客製化,例如Community與Collection的階層架構與查詢,以及關聯建立與鏈結搜尋、詞彙控制、索引重建與中文查詢等,DSpace不只可以作為單一個機構內所使用的數位典藏庫,也適合當作跨組織虛擬典藏庫的功能來使用。 DSpace is a software tool that is often used as a digital repository for academic institutions to achieve management and reuse of information. This paper uses the Metadata Architecture and Application Team (MAAT) website in a case study to examine the feasibility issue of whether DSpace is suitable as a virtual digital repository for inter-institutional use. The MAAT website is arranged in a static manner and comprises a number of documents for various digital library projects conducted by different institutions in Taiwan. The study concludes that DSpace is not only a digital repository suitable for single-institutional use, but also a virtual digital repository suitable for cross-institutional use; that is, if DSpace offered more flexible customizations for functions, such as hierarchical level and query of community and collection, association and linkage search, vocabulary control, re-index, and Chinese query.
Metadata在數位博物館之發展與分析 | Metadata for Museum Information: Development and Analysis
陳亞寧、陳淑君 Ya-Ning Chen、Shu-Jiun Chen
Journal of Library and Information Science , 2001,
Abstract: 頁次:52-66 本文旨在針對數位博物館Metadata進行探討,共採取了文獻探討、比較分析與個案研究三種研究方法,分別就數位博物館計畫Metadata相關名詞暨標準的發展與應用現況進行研議、標準對照與分析,以及國家典藏數位計畫的個案研究。本研究發現:(1)數位博物館計畫Metadata發展的理念與重心各有不同,但實際應用上存有互補性; (2) 會有相對應的相關Metadata格式、詞彙典、資訊模式為輔,讓Metadata
Schwarz-Krylov Subspace Method for MLFMM Analysis of Electromagnetic Wave Scattering Problems
Ping-Liang Rui;Ru-Shan Chen;Zhi-Wei Liu;Ya-Ning Gan
PIER , 2008, DOI: 10.2528/PIER08013003
Abstract: In this paper, the high-order hierarchical basis functions are used for solving electromagnetic wave scattering problems. The multilevel fast multipole method (MLFMM) is applied to accelerate the matrix-vector product operation and the Schwarz method is employed to speed up the convergence rate of the Krylov subspace iterative methods. The efficiency of the proposed approach is studied on several numerical model problems and the comparison with conventional Kryloviterativ e methods is made. Numerical results demonstrate that the combination of the Schwarz method and the Krylovsubspace iterative method is very effective with MLFMM and can reduce the overall simulation time significantly.
(E)-N-[(5-Methyl-2-furyl)methylene]-3-nitroaniline
Ya-Ning Guo
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809007107
Abstract: The asymmetric unit of the title compound, C12H10N2O3, contains two crystallographically independent molecules, in which the furan and benzene rings are oriented at dihedral angles of 46.09 (3) and 39.98 (3)°. In the crystal structure, weak intermolecular C—H...N hydrogen bonds link the molecules into chains running nearly parallel to the a axis.
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