Towards Multimedia Digital Libraries

2009 ◽  
pp. 361-370
Author(s):  
Cláudio de Souza Baptista ◽  
Ulrich Schiel
Keyword(s):  
Content Analysis ◽  
Digital Library ◽  
Digital Libraries ◽  
Specific Problem ◽  
Research Field ◽  
Text Documents ◽  
Ongoing Research ◽  
Storage And Retrieval ◽  
Indexing And Retrieval

A multimedia digital library copes with the storage and retrieval of resources of different media such as video, audio, maps, images, and text documents. The main improvement with regard to textual digital libraries is the possibility of retrieving documents in different media combining metadata and content analysis. Content-based Indexing and Retrieval is a complex and ongoing research field with specific problem statements for each media. A prototype of a multimedia digital library is presented.

Digital Libraries and the Role of Digital Librarians

2018 ◽  
pp. 98-119
Author(s):  
Adetola Kehinde
Keyword(s):  
Digital Library ◽  
Digital Libraries ◽  
Digital Rights Management ◽  
Holistic View ◽  
Content Creation ◽  
Storage And Retrieval ◽  
Advantages And Disadvantages ◽  
Library Resources ◽  
Electronic Storage

This chapter presents a holistic view of digital libraries and the role of digital librarians. Technological changes and the use of electronic storage and retrieval information systems have changed the way students and researchers are able to access, retrieve and use information. Key topics presented in the chapter include the concept of digitization, reasons for digitization, definitions of digital library, features of digital library, characteristics of digital libraries, advantages and disadvantages of digital library, collection development and content creation, digital librarianship, role of librarians in digital libraries, issues of concern to digital librarians, process of digitization of library resources, digital library components, and digital rights management.

Digital Libraries and the Role of Digital Librarians

2021 ◽  
pp. 17-38
Author(s):  
Adetola Kehinde
Keyword(s):  
Digital Library ◽  
Digital Libraries ◽  
Digital Rights Management ◽  
Holistic View ◽  
Content Creation ◽  
Storage And Retrieval ◽  
Advantages And Disadvantages ◽  
Library Resources ◽  
Electronic Storage

This chapter presents a holistic view of digital libraries and the role of digital librarians. Technological changes and the use of electronic storage and retrieval information systems have changed the way students and researchers are able to access, retrieve and use information. Key topics presented in the chapter include the concept of digitization, reasons for digitization, definitions of digital library, features of digital library, characteristics of digital libraries, advantages and disadvantages of digital library, collection development and content creation, digital librarianship, role of librarians in digital libraries, issues of concern to digital librarians, process of digitization of library resources, digital library components, and digital rights management.

Keyword extraction: Issues and methods

2019 ◽  
Vol 26 (3) ◽  
pp. 259-291
Author(s):  
Nazanin Firoozeh ◽  
Adeline Nazarenko ◽  
Fabrice Alizon ◽  
Béatrice Daille
Keyword(s):  
Language Processing ◽  
Digital Libraries ◽  
Extraction Methods ◽  
Research Field ◽  
Keyword Extraction ◽  
Keyphrase Extraction ◽  
Text Documents ◽  
Efficient Extraction ◽  
Active Research ◽  
Definition Of

AbstractDue to the considerable growth of the volume of text documents on the Internet and in digital libraries, manual analysis of these documents is no longer feasible. Having efficient approaches to keyword extraction in order to retrieve the ‘key’ elements of the studied documents is now a necessity. Keyword extraction has been an active research field for many years, covering various applications in Text Mining, Information Retrieval, and Natural Language Processing, and meeting different requirements. However, it is not a unified domain of research. In spite of the existence of many approaches in the field, there is no single approach that effectively extracts keywords from different data sources. This shows the importance of having a comprehensive review, which discusses the complexity of the task and categorizes the main approaches of the field based on the features and methods of extraction that they use. This paper presents a general introduction to the field of keyword/keyphrase extraction. Unlike the existing surveys, different aspects of the problem along with the main challenges in the field are discussed. This mainly includes the unclear definition of ‘keyness’, complexities of targeting proper features for capturing desired keyness properties and selecting efficient extraction methods, and also the evaluation issues. By classifying a broad range of state-of-the-art approaches and analysing the benefits and drawbacks of different features and methods, we provide a clearer picture of them. This review is intended to help readers find their way around all the works related to keyword extraction and guide them in choosing or designing a method that is appropriate for the application they are targeting.

scholarly journals Perceptions of usability and usefulness of digital libraries

2012 ◽  
Vol 6 (1-2) ◽  
pp. 133-147 ◽  
Author(s):  
Krystyna K. Matusiak
Keyword(s):  
Digital Library ◽  
Digital Libraries ◽  
Academic Libraries ◽  
Teaching And Learning ◽  
Case Study Research ◽  
Ease Of Use ◽  
User Intention ◽  
Negative Effect ◽  
Content Coverage ◽  
Visual Materials

This paper provides an overview of a case study research that investigated the use of Digital Library (DL) resources in two undergraduate classes and explored faculty and students' perceptions of educational digital libraries. This study found that students and faculty use academic DLs primarily for textual resources, but turn to the open Web for visual and multimedia resources. The study participants did not perceive academic libraries as a useful source of digital images and used search engines when searching for visual resources. The limited use of digital library resources for teaching and learning is associated with perceptions of usefulness and ease of use, especially if considered in a broader information landscape, in conjunction with other library information systems, and in the context of Web resources. The limited use of digital libraries is related to the following perceptions: 1) Library systems are not viewed as user-friendly, which in turn discourages potential users from trying DLs provided by academic libraries; 2) Academic libraries are perceived as places of primarily textual resources; perceptions of usefulness, especially in regard to relevance of content, coverage, and currency, seem to have a negative effect on user intention to use DLs, especially when searching for visual materials.

scholarly journals Frontiers in Vitamin Research: New Antibodies, New Data

2011 ◽  
Vol 11 ◽  
pp. 1226-1242 ◽  
Author(s):  
Rafael Coveñas ◽  
Arturo Mangas ◽  
Dominique Bodet ◽  
Sébastien Duleu ◽  
Pilar Marcos ◽  
...  
Keyword(s):  
Folic Acid ◽  
Vitamin C ◽  
Research Field ◽  
General Idea ◽  
Hypothalamic Nucleus ◽  
Ongoing Research ◽  
Hypothalamic Region ◽  
Anatomical Distribution ◽  
Monkey Brain ◽  
Immunohistochemical Techniques

Since 2004, the anatomical distribution of vitamins in the monkey brain, studied using immunohistochemical techniques and new tools (specific antisera that discriminate different vitamins reasonably well), has been an ongoing research field. The visualization of immunoreactive structures containing vitamins (folic acid, riboflavin, thiamine, pyridoxal, and vitamin C) has recently been reported in the monkey brain (Macaca fascicularis), all these vitamins showing a restricted or very restricted distribution. Folic acid, thiamine, and riboflavin have only been observed in immunoreactive fibers, vitamin C has only been found in cell bodies (located in the primary somatosensory cortex), and pyridoxal has been found in both fibers and cell bodies. Perikarya containing pyridoxal have been observed in the paraventricular hypothalamic nucleus, the periventricular hypothalamic region, and in the supraoptic nucleus. The fibers containing vitamins are thick, smooth (without varicosities), and are of medium length or long, whereas immunoreactive cell bodies containing vitamins are round or triangular. At present, there are insufficient data to elucidate the roles played by vitamins in the brain, but the anatomical distribution of these compounds in the monkey brain provides a general idea (although imprecise and requiring much more study) about the possible functional implications of these molecules. In this sense, here the possible functional roles played by vitamins are discussed.

scholarly journals The International Children’s Digital Library: A Case Study in Designing for a Multilingual, Multicultural, Multigenerational Audience

2005 ◽  
Vol 24 (1) ◽  
pp. 4 ◽  
Author(s):  
Hilary Browne Hutchinson ◽  
Anne Rose ◽  
Benjamin B. Bederson ◽  
Ann Carlson Weeks ◽  
Allison Druin
Keyword(s):  
Children's Literature ◽  
Cultural Differences ◽  
Digital Library ◽  
Digital Libraries ◽  
Children’S Literature ◽  
Design Criteria

The challenges encountered in building the InternationalChildren’s Digital Library (ICDL), a freely availableonline library of children’s literature are described. Thesechallenges include selecting and processing books fromdifferent countries, handling and presenting multiplelanguages simultaneously, and addressing cultural differences. Unlike other digital libraries that present content from one or a few languages and cultures, and focuson either adult or child audiences, ICDL must serve amultilingual, multicultural, multigenerational audience.The research is presented as a case study for addressingthese design criteria; current solutions and plans forfuture work are described.

Building digital collections in a public university library in Ghana: priority-setting and user needs assessment

2014 ◽  
Vol 33 (2) ◽  
pp. 38-45 ◽  
Author(s):  
Nesba Yaa Anima Adzobu
Keyword(s):  
Needs Assessment ◽  
Digital Library ◽  
Priority Setting ◽  
Digital Libraries ◽  
Academic Library ◽  
User Needs ◽  
Digital Collections ◽  
Content Type ◽  
User Communities ◽  
Library User

Purpose – Although user needs assessment is an intrinsic element of service quality delivery in digital libraries (DLs), not much has been written on this topic in the context of African universities. This is understandable as academic digital libraries in Africa are rather nascent. Even so, the most frequently-used needs assessment methods do not directly involve the users. This study aims to assess priority setting by academic library administrators and the needs of patrons of digital collections of a public university library in Ghana. Design/methodology/approach – Analysis of official university documents and interviews with digital library patrons at the University of Cape Coast (UCC) in Ghana were carried out between September, 2011 and January, 2012. Five research questions were asked: what are the current conditions of the UCC digital library project, the user communities and their needs, what are the priorities set by the university administrators and library leaders at the UCC and the state of technological readiness in place and what are needed by the UCCDL. Also, what is the extent of collaboration by interested parties in the UCCDL? Findings – Three general digital library user communities were identified, that is, UCCDL staff- this community was composed of experts in both digital library systems and content, characterized as heavy users of the existing systems, as knowledgeable about articulated (formalized) user needs, and able to devote short (usually less than two hours) amounts of time to individual's needs. Next, are scholars and other visitors to the UCCDL – this community was characterized as having high levels of domain expertise and knowledge of library systems. They are also able to devote large but specific amounts of time (days or weeks) to their individual information needs. Visitors/Prospective users- this community was characterized as having varied levels of domain expertise and low levels of library systems knowledge. They are able to devote only short periods of time to their information needs or explorations. These user communities are influenced by diverse preferences, experiences, and knowledge structures. Practical implications – Academic libraries are increasingly advocating local user studies as a way to provide the digital library services that are relevant to the culture and user population of the academic institution. Replicating digital library user studies at the local level can provide information for improving existing services or developing new ones. Originality/value – In African public universities, there is little earlier research on digital library user needs assessments or DL priority-setting by academic library administrators.

scholarly journals Generating Collaborative Systems for Digital Libraries: a Model-Driven Approach

2010 ◽  
Vol 29 (4) ◽  
pp. 171 ◽  
Author(s):  
Alessio Malizia ◽  
Paolo Bottoni ◽  
S. Levialdi
Keyword(s):  
Digital Library ◽  
User Interfaces ◽  
Digital Libraries ◽  
Automatic Generation ◽  
Visual Language ◽  
Domain Experts ◽  
Model Driven ◽  
Neutral Models ◽  
Definition Of ◽  
High Level

The design and development of a digital library involves different stakeholders, such as: information architects, librarians, and domain experts, who need to agree on a common language to describe, discuss, and negotiate the services the library has to offer. To this end, high-level, language-neutral models have to be devised. Metamodeling techniques favor the definition of domainspecific visual languages through which stakeholders can share their views and directly manipulate representations of the domain entities. This paper describes CRADLE (Cooperative-Relational Approach to Digital Library Environments), a metamodel-based framework and visual language for the definition of notions and services related to the development of digital libraries. A collection of tools allows the automatic generation of several services, defined with the CRADLE visual language, and of the graphical user interfaces providing access to them for the final user. The effectiveness of the approach is illustrated by presenting digital libraries generated with CRADLE, while the CRADLE environment has been evaluated by using the cognitive dimensions framework.

A study on next‐generation digital library using context‐awareness technology

2013 ◽  
Vol 31 (2) ◽  
pp. 236-253 ◽  
Author(s):  
Younghee Noh
Keyword(s):  
Digital Library ◽  
Digital Libraries ◽  
Context Awareness ◽  
Theoretical Research ◽  
Context Aware ◽  
Semantic Retrieval ◽  
Next Generation ◽  
Climate Control ◽  
Content Type ◽  
Reference Services

PurposeThis study seeks to examine the concepts of context, context‐awareness, and context‐awareness technology needed for applying context‐awareness technology to the next‐generation of digital libraries, and proposed context‐aware services that can be applied to any situation by illustrating some library contexts.Design/methodology/approachThe paper investigated both theoretical research and case analysis studies before suggesting a service model for context‐awareness‐based libraries by examining the context, context‐awareness, and context‐awareness technology in depth.FindingsThis paper derived possible library services which could be provided if context‐awareness services are implemented by examining and analyzing case studies and systems constructed in other fields. A library‐applied context‐aware system could recognize users entering the library and provide optimal services tailored to each situation for both new and existing users. In addition, the context‐awareness‐based library could provide context‐awareness‐based reference services, context‐awareness‐based loan services, and cater to other user needs in the stacks, research space, and a variety of other information spaces. The context‐awareness‐based library could also recognize users in need of emergency assistance by detecting the user's behavior, movement path, and temperature, etc. Comfort or climate‐control services could provide the user with control of the temperature, humidity, illumination and other environmental elements to fit the circumstances of users, books, and instruments through context‐aware technology.Practical implicationsNext‐generation digital libraries apply new concepts such as semantic retrieval, real‐time web, cloud computing, mobile web, linked data, and context‐awareness. Context‐awareness‐based libraries can provide applied context‐awareness access service, reactive space according to the user's access, applied context‐awareness lobbies, applied context‐awareness reference services, and applied context‐awareness safety services, context‐awareness‐based comfort services and so on.Originality/valueReal instances of libraries applying context‐aware technology are few, according to the investigative results of this study. The study finds that the next‐generation digital library using context‐awareness technology can provide the best possible service for the convenience of its users.

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