943 resultados para usability


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Aquest treball de final de carrera tracta sobre la facilitat d'ús en els llocs web, la importància de tenir en compte aquest aspecte quan es dissenyen llocs i la manera d'avaluar-los. Aquesta avaluació de la facilitat d'ús s'ha centrat en webs de l'entorn d'Humanidades, i concretament en els webs d'acadèmies científiques.

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En el present treball es definirà el cicle de vida i la metodologia que s'ha de seguir, segons el disseny centrat en l'usuari, per a un projecte web orientat a continguts específics per a persones de la tercera edat, per a això, es determinarà i justificarà quins mètodes i tècniques d'avaluació de la usabilitat són els més adequats per poder dissenyar un lloc web d'aquest tipus.

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S'exposa el resultat d'un estudi comparatiu sobre la comunicació web dels serveis de les biblioteques virtuals universitàries d'una selecció d'universitats a distància entre les quals hi ha la UNED, la UOC i l'Open University. Aquest estudi es fa observant les diferències qualitatives de diversos aspectes, com ara l'organització, l'accessibilitat, els formats, el redactat, la utilitat i la presentació de la informació sobre els serveis de la biblioteca oferta en la web als usuaris d'aquelles universitats i/o Biblioteques que han realitzat el procés de gestió de qualitat o han confeccionat la carta de serveis i les que no. Entre diverses recomanacions i exemples de bones pràctiques, l'estudi conclou que les universitats i biblioteques que no mostren cap tipus de procés de qualitat en la seva institució podem veure que són les que obliden alguns elements essencials i molts detalls pel que fa a la descripció de la oferta de serveis es refereix. Conclusió i recomanacions extensibles a qualsevol biblioteca universitària que ofereixi informació en línia sobre els seus serveis. A partir de l'elaboració de fitxes que recullen els diversos aspectes a observar de cadascuna de les biblioteques hem ponderat, d'acord amb la diversa bibliografia consultada, cadascun com desaconsellable, recomanable i excel·lent amb el resultat d'un informe que mostra totes les recomanacions per a cadascun dels elements.

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The Open University of Catalonia (UOC) has conducted a study of operability of its user interfaces, creating for this purpose different work groups that have analyzed different casuistries. One of these groups focused on the study and analysis of the usability of the Virtual Library's website, with the objective of obtaining benefits for our users. As a result of this analysis, an important qualitative jump is occurring in the new implementation of the website of the UOC's Virtual Library, prioritizing the role of users from different points of view: ease of navigation, management of profiles and the services associated to these and the restructuring of the information architecture, with the final aim of facilitating access to the resources and the services offered from the Library, advocating in this way for their quality and improvement.

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Aquest projecte se centrarà en l'anàlisi i millora dels processos online i l'eliminació de les barreres d'accessibilitat i usabilitat del site d'una entitat financera. Per al compliment d'aquest objectiu ens fixarem en el formulari de contractació d'una hipoteca.

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Este trabajo pretende estudiar los aspectos referentes a la usabilidad de los smart TV realizando un análisis de sus funciones más comunes y concluyendo con propuestas para la mejora de la usabilidad de estos dispositivos.

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Aquest treball pretén donar una visió el més clara possible de com hauria de ser una pàgina web dedicada a l'intercanvi d'objectes materials, coneixements, serveis, etc. Per aconseguir-ho s'ha seguit la metodologia de la interacció humana amb ordinadors (IHO) i el disseny centrat en l'usuari (DCU), avaluant al mateix temps la usabilitat i accessibilitat.

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Usability is critical to consider an interactive software system successful. Usability testing and evaluation during product development have gained wide acceptance as a strategy to improve product quality. Early introduction of usability perspectives in a product is very important in order to provide a clear visibility of the quality aspects not only for the developers, but also for the testing users as well. However, usability evaluation and testing are not commonly taken into consideration as an essential element of the software development process. Then, this paper exposes a proposal to introduce usability evaluation and testing within a software development through reuse of software artifacts. Additionally, it suggests the introduction of an auditor within the classification of actors for usability tests. It also proposes an improvement of checklists used for heuristics evaluation, adding quantitative and qualitative aspects to them

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Information and communication technologies pose accessibility problems to people with disabilities because its design fails to take into account their communication and usability requirements. The impossibility to access the services provided by these technologies creates a situation of exclusion that reduces the self-suficiency of disabled individuals and causes social isolation, which in turn diminishes their overall quality of life. Considering the importance of these technologies and services in our society, we have developed a pictogram-based Instant Messaging service for individuals with cognitive disabilities who have reading and writing problems. Along the paper we introduce and discuss the User Centred Design methodology that we have used to develop and evaluate the pictogram-based Instant Messaging service and client with individuals with cognitive disabilities taking into account their communication and usability requirements. From the results obtained in the evaluation process we can state that individuals with cognitive disabilities have been able to use the pictogram-based Instant Messaging service and client to communicate with their relatives and acquaintances, thus serving as a tool to help reducing their social and digital exclusion situation.

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Background: To enhance our understanding of complex biological systems like diseases we need to put all of the available data into context and use this to detect relations, pattern and rules which allow predictive hypotheses to be defined. Life science has become a data rich science with information about the behaviour of millions of entities like genes, chemical compounds, diseases, cell types and organs, which are organised in many different databases and/or spread throughout the literature. Existing knowledge such as genotype - phenotype relations or signal transduction pathways must be semantically integrated and dynamically organised into structured networks that are connected with clinical and experimental data. Different approaches to this challenge exist but so far none has proven entirely satisfactory. Results: To address this challenge we previously developed a generic knowledge management framework, BioXM™, which allows the dynamic, graphic generation of domain specific knowledge representation models based on specific objects and their relations supporting annotations and ontologies. Here we demonstrate the utility of BioXM for knowledge management in systems biology as part of the EU FP6 BioBridge project on translational approaches to chronic diseases. From clinical and experimental data, text-mining results and public databases we generate a chronic obstructive pulmonary disease (COPD) knowledge base and demonstrate its use by mining specific molecular networks together with integrated clinical and experimental data. Conclusions: We generate the first semantically integrated COPD specific public knowledge base and find that for the integration of clinical and experimental data with pre-existing knowledge the configuration based set-up enabled by BioXM reduced implementation time and effort for the knowledge base compared to similar systems implemented as classical software development projects. The knowledgebase enables the retrieval of sub-networks including protein-protein interaction, pathway, gene - disease and gene - compound data which are used for subsequent data analysis, modelling and simulation. Pre-structured queries and reports enhance usability; establishing their use in everyday clinical settings requires further simplification with a browser based interface which is currently under development.

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Winter maintenance, particularly snow removal and the stress of snow removal materials on public structures, is an enormous budgetary burden on municipalities and nongovernmental maintenance organizations in cold climates. Lately, geospatial technologies such as remote sensing, geographic information systems (GIS), and decision support tools are roviding a valuable tool for planning snow removal operations. A few researchers recently used geospatial technologies to develop winter maintenance tools. However, most of these winter maintenance tools, while having the potential to address some of these information needs, are not typically placed in the hands of planners and other interested stakeholders. Most tools are not constructed with a nontechnical user in mind and lack an easyto-use, easily understood interface. A major goal of this project was to implement a web-based Winter Maintenance Decision Support System (WMDSS) that enhances the capacity of stakeholders (city/county planners, resource managers, transportation personnel, citizens, and policy makers) to evaluate different procedures for managing snow removal assets optimally. This was accomplished by integrating geospatial analytical techniques (GIS and remote sensing), the existing snow removal asset management system, and webbased spatial decision support systems. The web-based system was implemented using the ESRI ArcIMS ActiveX Connector and related web technologies, such as Active Server Pages, JavaScript, HTML, and XML. The expert knowledge on snow removal procedures is gathered and integrated into the system in the form of encoded business rules using Visual Rule Studio. The system developed not only manages the resources but also provides expert advice to assist complex decision making, such as routing, optimal resource allocation, and monitoring live weather information. This system was developed in collaboration with Black Hawk County, IA, the city of Columbia, MO, and the Iowa Department of transportation. This product was also demonstrated for these agencies to improve the usability and applicability of the system.

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Collage is a pattern-based visual design authoring tool for the creation of collaborative learning scripts computationally modelled with IMS Learning Design (LD). The pattern-based visual approach aims to provide teachers with design ideas that are based on broadly accepted practices. Besides, it seeks hiding the LD notation so that teachers can easily create their own designs. The use of visual representations supports both the understanding of the design ideas and the usability of the authoring tool. This paper presents a multicase study comprising three different cases that evaluate the approach from different perspectives. The first case includes workshops where teachers use Collage. A second case implies the design of a scenario proposed by a third-party using related approaches. The third case analyzes a situation where students follow a design created with Collage. The cross-case analysis provides a global understanding of the possibilities and limitations of the pattern-based visual design approach.

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This paper presents the platform developed in the PANACEA project, a distributed factory that automates the stages involved in the acquisition, production, updating and maintenance of Language Resources required by Machine Translation and other Language Technologies. We adopt a set of tools that have been successfully used in the Bioinformatics field, they are adapted to the needs of our field and used to deploy web services, which can be combined to build more complex processing chains (workflows). This paper describes the platform and its different components (web services, registry, workflows, social network and interoperability). We demonstrate the scalability of the platform by carrying out a set of massive data experiments. Finally, a validation of the platform across a set of required criteria proves its usability for different types of users (non-technical users and providers).

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Opinnäytetyömme koostuu Helsingin ammattikorkeakoulu Stadian Mesta-portaalille vuoden 2006 aikana tehdyn käytettävyystutkimuksen raportista sekä sen toteuttamista ja tuloksia esittelevästä kirjallisesta osasta. Sekä käytettävyystestaus että opinnäytetyö on toteutettu parityönä. Mesta on Stadian verkkopalvelujen portaali, joka lanseerattiin joulukuussa 2006 Stadian opettajien, opiskelijoiden ja henkilökunnan käyttöön. Mesta sisältää Stadian tärkeimmät tietojärjestelmät ja verkkopalvelut, kuten sähköpostin ja tilanvarausjärjestelmän, sekä tarjoaa uusia palveluja. Näitä ovat esimerkiksi työtilat ja keskustelualueet. Käytettävyys on tuotteen ominaisuus, joka määrittelee sen, kuinka sujuvaa, tehokasta ja opittavaa sen käyttö on. Käytettävyystutkimuksilla voidaan selvittää, kuinka hyvin käytettävyyden tavoitteissa on onnistuttu. Käytettävyydellä on yhä suurempi merkitys verkkopalveluissa ja erilaisissa laitteissa, sillä ne ovat tulleet erittäin laajaan käyttöön ja niiltä osataan odottaa käyttömukavuutta. Vaikeasti käytettävä tuote menettää merkittävän kilpailuedun. Mestalle päätettiin tehdä käytettävyystestaukset, sillä käytettävyydeltään onnistuneen portaalin ajateltiin houkuttelevan käyttäjiä. Testauksen tavoitteena oli antaa järjestelmän kehittäjille informaatiota, jonka avulla he voisivat parantaa portaalin käytettävyyttä. Haasteena oli portaalin laaja käyttäjäkunta, jolla on hyvin erilaista osaamista tietokoneiden ja verkkopalvelujen käyttämisestä. Tästä huolimatta portaalin tuli palvella heitä tasapuolisesti. Testaukset toteutettiin seitsemällä testihenkilöllä siten, että he suorittivat palvelussa heille annettuja tehtäviä samalla kun testitilannetta tarkkailtiin sekä paikan päällä että videoiden. Tehtävien avulla etsittiin portaalin käyttöliittymän ongelmakohtia ja löydetyt ongelmat kirjoitettiin testausraportiin kehitysehdotuksiksi. Näitä ehdotuksia syntyi 55 kappaletta ja niistä suurin osa otettiin käyttöön Mesta-portaalissa.

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Opinnäytteeni käsittelee mobiilipalveluiden sekä visuaalista että käyttöliittymäsuunnittelua. Lähden liikkeelle siitä olettamuksesta, että näiden osa-alueiden suunnitteluun kannattaa panostaa. Totean myös, että näin ei kuitenkaan vielä nykyään tehdä. Käsittelen mobiilipalveluja yleisemmällä tasolla, mutta keskityn erityisesti WAP-pohjaisiin palveluihin. Samat periaatteet ja vinkit soveltuvat kuitenkin myös muilla alustoilla toimivien palveluiden suunnitteluun, ja koska minulla on kokemusta myös näistä, olen tuonut tätäkin puolta esiin. Työssäni puhutaan visuaalisesta suunnittelusta ja käytettävyydestä yleisellä tasolla, mutta se toimii samalla eräänlaisena ohjekirjana suunnittelijalle. Uskon, että vielä toistaiseksi yritykset siirtyvät WAPiin pitkälti samalla sisällöllä ja rakenteella kuin web-palvelussaan, ja esittelen työssäni syitä sille, miksi tämä menetelmä on huono. Työhöni kokoamani pikamanuaali kokoaa tärkeimmät käytännön vinkit, joiden avulla voidaan tarvittaessa nopeallakin aikataululla suunnitella käyttäjäystävällinen WAP-palvelu. Kiinnostus aiheeseen nousi omista kokemuksistani työelämässä, ja kirjatiedon lisäksi tärkeänä lähteenä on toiminut oma kokemusmaailmani ja yrityksen ja erehdyksen kautta opitut taidot. Uskon että myös nämä tuovat hyvän lisän oppaaseen. Käsittelen ensin matkaviestinalan yleistä kehitystä ja esittelen syitä sille, miksi mobiilipalveluiden suunnitteluun kannattaa panostaa. Käyn sitten läpi sellaisia mobiililaitteiden erityisominaisuuksia, jotka asettavat työlle omat rajoituksensa. Lopuksi listaan tärkeimmät huomioitavat seikat ja annan käytännön vinkkejä suunnitteluprosessiin.