Die vorliegende Bachelorarbeit befasst sich mit der Untersuchung der Usability der Betaversion des neuen Onlinekatalogs der Deutschen Nationalbibliothek anhand von Usability-Tests. Das Ziel der Arbeit besteht darin, die Benutzungsfreundlichkeit des Katalogs zu evaluieren und mögliche Verbesserungspotenziale aufzuzeigen, um den Benutzenden eine optimale Suche durch intuitive Recherchemöglichkeiten wie Filter zu ermöglichen. Die Untersuchung beschränkt sich auf die Recherche in der Betaversion. Der theoretische Teil der Arbeit umfasst eine detaillierte Beschreibung der grundlegenden Konzepte und Methoden im Bereich der Usability-Untersuchungen. Im praktischen Teil werden Usability-Tests durchgeführt, bei denen Probanden verschiedene Aufgaben im Onlinekatalog ausführen. Die Ergebnisse des Tests werden in Bezug auf Usability-Probleme und Verbesserungspotenziale hinsichtlich der Recherchewege ausgewertet. Es werden konkrete Lösungsvorschläge entwickelt, um die Benutzungserfahrung im Onlinekatalog der Deutschen Nationalbibliothek zu optimieren. Die vorliegende Arbeit soll dazu beitragen, die Usability des neuen Onlinekatalogs zu verbessern und den Benutzenden ein effizientes und angenehmes Sucherlebnis zu bieten.:1 Einleitung 1.1 Ziel und Aufgabe der Bachelorarbeit 1.2 Überblick über den Aufbau der Arbeit 2 Usability 2.1 Definition von Usability 2.2 Bedeutung der Usability für OPACs von Bibliotheken 2.3 Deutsche Nationalbibliothek 2.4 Methoden der Usability-Evaluation 2.4.1 DIN EN ISO 9241-110 2.4.2 Expertenbewertung 2.4.3 Eye-Tracking 2.4.4 A/B-Tests 2.4.5 Interviews 2.4.6 Usability-Tests 2.4.7 Fazit 3 Umsetzung der Evaluationsmethode zur Bewertung der Usability 3.1 Auswahl der Teilnehmenden 3.2 Fragebogen 3.3 Pretest 3.4 Durchführung der Evaluation 4 Ergebnisse der Usability-Evaluation 5 Fazit und Empfehlungen 6 Literaturverzeichnis 7 Anhang 7.1 Untersuchungsdesign 7.2 Fragebogen 7.3 Fragebögen der Teilnehmenden 7.4 Gesprächsnotiz des Gruppengesprächs mit den Teilnehmenden 7.5 Tabelle Auswertung 8 Selbstständigkeitserklärung

The aim of this thesis is to, through an empirical study ofthe social tags in the City of Stockholm libraries’ OPACwith critical discourse analysis, examine the social tags’linguistic design, usability, and communicative potential– all in relation to the context. It is a linguistic study andit is important to take into account that the tags are extremelyshort texts – single-word-texts. My starting-pointis that the tags are a form of utility texts.What I find is that a clear majority of the tags are nounsand function as index terms, but that there are differencescompared to authorized index terms. The study showshow the tag-authors solve their contextual premises by forexample word-compositions. I find that a balance is importantbetween specific and general as the tags lack aparent-child or sibling semantic relationship. Compared totraditional knowledge organization, there is a consistentfeature of subjectivity in the tags. I see a fourth type oforganization in addition to cataloguing, classification, andindexing – the personal comment. In the retrieval, the tagsare best suited for browsing. I also find that the social tagscould function as a complement to a controlled vocabulary,but not replace it. / Program: Bibliotekarie

The aim of this thesis is to study the phenomenon of read/write OPAC by looking at how students at Pennsylvania University use PennTags in order to influence document descriptions in the library catalogue. The main questions to be answered are to what extent PennTags is being used in different subject areas and what users contribute to document descriptions through tagging in different subject areas. Studying the posts created by a sample of PennTags users from a quantitative approach I try to find out if there is reason to believe that the activity of users and users’ possibility to make meaningful contributions are dependent of the subject matter being dealt with in documents described, as anticipated by the theory of pace layering. I find that user interest in influencing the library catalogue through PennTags appears to be low in general, with exception for in the subject areas of the main classes Language and literature and Social sciences in Library of Congress Classification. Users do however make meaningful contributions to the document descriptions through tagging in 59 % of the cases. The results support only vague evidence of the connection anticipated by the theory of pace layering and I suggest that other explanatory models must be sought in order to understand user behaviour in systems like PennTags. / Uppsatsnivå: D

• Neueinspielung der RVK in den SWB • Einspielung von DDC-Notationen aus WorldCat • Neuerungen im SWB-OPAC

Already in the late 1970´s it became clear that the traditional catalogs in libraries were not suited for children, neither their interests nor their way expressing themselves were accounted for. The goal of this thesis is to investigate if and how children’s OPACs (Open public access catalogs) interface design is at present adapted to the presumed audience of children. My method consists of literature studies and an investigation on the graphical interfaces in OPACs for children, according to the five criteria formulated by childrens library consultant Lena Lundgren and IT-consultant Kia Gumbel. The aims are to find out: a) what requirements for children’s OPAC interfaces and their usability are defined in literature and b) what the actual (real) features of the children’s OPAC interfaces are. What interests me, regarding the graphical interfaces, is the actual appearance seen by the children, and partly the interactivity supplied by the OPACs. Using the criteria of Lundgren and Gumbel, I analyse figures, the front page, key-words, the text and the quality appearing in the different OPACs. In conclusion, the graphical interfaces of the three OPACs for children are somewhat adapted for children according to the Lundgren/Gumbel criteria. By using for example more user-polls, individualized graphical interfaces and reference groups consisting of children, the graphical interface for OPACs can be modified, and hopefully optimised, to take full account of the varied abilities of children. / Uppsatsnivå: C

The purpose of this Bachelor thesis is to examine how user-friendly the OPAC of the Märsta public library is considered to be.Theoretical basis are HCI and Allwoods definition of usability. Issues are: Is the OPAC suited to its task? Is the OPAC user-friendly? How well does a user accept the OPAC? and What degree of competence is shown by users of the OPAC? The source material consists of six interviews in the form of .avi files. The method I have chosen is qualitative semi-structured interview form. The result is that, based on Carl Martin Allwood’s defini-tion and with exception for the using of help-resources, the usability of Märsta’s library OPAC can be considered less good.

Made available in DSpace on 2015-04-16T15:23:22Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 2718441 bytes, checksum: 8015064ddc4cfab62177908ec5890b80 (MD5) Previous issue date: 2012-03-30 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / Libraries are places for organizing information in order to not only disseminate information that favors a particular social group, but also to serve as places for the preservation of history, memory and culture related to invisible groups, especially those under the category of social groups ethnically vulnerable, including African and Afro-descendants , whose participation and contribution to the formation of Brazilian society is still denied. This research aims to analyze how the process of organizing the ethnic and racial information occurs at Central Library of the UFPB. Its focus of analysis is on the OPAC, contextualizing university libraries, describing the terms concerning matters related to ethnic and racial information in all areas of knowledge, surveying how they are classified and how they were treated within these libraries and thus identifying the importance of ethnic and racial information for preservation of theAfrican/Afro-descendant memory for access and use purposes by researchers, students, representatives of social and black movements. Accordingly,we used the descriptive and exploratory research as well as the qualitative and quantitative approaches for both of them fit well together and are essential in regard to clarity and reliability of the results. The terms founds during search, seem inconsistent, representing only 0,165% of the total of titles that make up the archive of this library demonstrating deficiency of these institutions and the lack of information with the ethnic and racial theme being necessary to adopt an indexing policy with use of the terms that can provide visibility for these data. / As bibliotecas constituem lugares de organização da informação com vistas a disseminar não apenas a informação que privilegia um determinado grupo social, mas também servem como lugares de preservação da história, memória e cultura referentes aos grupos invisíveis, principalmente aqueles inseridos na categoria de grupos sociais etnicamente vulneráveis, incluindo-se africanos e afrodescendentes, cuja participação e contribuição na formação da sociedade brasileira é negada ainda hoje. Esta pesquisa, por sua vez, tem por objetivo analisar como se dá o processo de organização e representação da informação étnico-racial na biblioteca central da UFPB. Tem como foco de análise o OPAC, contextualizando bibliotecas universitárias, descrevendo os descritores referentes aos assuntos relacionados à informação étnico-racial em todas as áreas de conhecimento, verificando como estão indexados e como foram tratados dentro dessas bibliotecas e identificando a importância da informação étnico-racial para preservação da memória africana/afrodescendente para fins de acesso e uso por pesquisadores, estudantes, representantes dos movimentos sociais e negros. Nesse sentido, utilizamos da pesquisa descritiva, exploratória e das abordagens qualitativa e quantitativa por acreditar que ambas abordagens combinam e são fundamentais para se ter maior clareza e confiabilidade dos resultados. Os descritores encontrados aparecem timidamente durante o processo de busca correspondendo apenas 0,165% do total de títulos que compõem o acervo dessa biblioteca demonstrando uma deficiência por parte dessas instituições e a insuficiência da informação étnico-racial sendo necessária a uma política de indexação com aplicação dos termos que possam dar visibilidade a essas informações.

The purpose of this bachelor thesis is to find out how information seeking habits and experiences of people in different generations affects their expectations on information retrieval systems like OPAC. Two OPACs are used, one web-OPAC and one mobile-OPAC. The following questions are asked: how can theories about information seeking behaviors explain why and in which way one seeks information? In which way does information seeking behaviors and habits affect the experience of OPAC? Which differences and/or similarities can be found between the web-OPAC and the mobile-OPAC? How does generational aspects affect experiences and preferences in an information seeking context? The theoretical framework of the thesis is information retrieval with several models about information-seeking/searching needs and behaviors. The empirical data contains interviews with nine people in different generations and protocols about two different OPACs. The results of this bachelor thesis show that generational aspects do not affect information habits and experience in a broader sense and that it depends on the contextual environment. The results also show that earlier experiences of information retrieval systems do affect the users in many ways and brings high expectations when they interact with other systems, like OPAC. One connection that we found is very important for the evolution of the modern OPAC, the users habits of social media and the interactive web environment. / Program: Bibliotekarie

The aim of this thesis is to study social tagging in an OPAC by looking at the tags of Ann Arbor District Library’s catalogue. In this thesis I analyse the possibilities of social tagging. The main questions to be answered are what is the distribution of tags in different categories, what are the differences between fiction and non-fiction and how do the social tags differ from the terms of the professional indexing practice. Studying 500 tags I find that subject matter was the most frequent category for tags assigned to fiction and non-fiction. The tags assigned to fiction were more multi-dimensional than the tags assigned to non-fiction. The tag categories experience and task, which are unique to the social tagging practice, were not used frequently. I suggested that they still had potential to be of interest to users with common interest and taste. The study shows that the users did not, to any higher extent, use the terms of the catalogue. The tags were in general less specific than the professional terms. In the thesis I use communication theory to analyse the social tagging practice and two different terminologies. I find that the social tagging practice has the potential of being a complement to the professional indexing, allowing users to use more associations and their own terms. I find that the manga and anime community used their own terms that in many ways were different from the professional terms. / Uppsatsnivå: D

The object of this study is to examine the effective functionality of an OPAC-system while a few participants interacted with the catalogue. I’ve used Carl Martin Allwood’s (1998) four designed usability factors to be able to estimate the effective functionality of the online catalogue. Theoretic basis is Human Computer Interaction together with Allwood’s four defined usability factors. They are: adjustment, ease of use, user acceptance and user competence. This study is conducted with a verbal protocol method which encourages the seven participators to “think aloud” while performing tasks. The study shows that the participants interact most effective in those functions they’re accustomed with. Which indicate that the OPAC-system have a high grade of user acceptance. The end users with more experience of using Internet search engines requested similar search capabilities and settings in the online catalogue. They tend to lack a little bit of understanding to the limitations of the OPAC which therefore indicate their lack of user competence. Some task problems occurred while the participators interacted in steps and functions they weren’t familiar with. They also spoke of the difficulties with subject searching and that they would like to know the best way to make search queries. I estimate some need of more user friendly functions and services, especially in the help section. The study shows that it is essential to educate users in ways to interact with the OPAC-system in a more effective manner.