787 research outputs found
Cognitive support for older people from multimedia options
No full textIf older users of multimedia displays could select among presentation options, would they choose display combinations that supported their performance? After three short touch-screen tasks which measured the perceptual and cognitive abilities of 50 older adults, they answered questions about a route on an online map that could be accompanied by written and/or spoken text. Half the participants saw animated routes; and they were less accurate answering questions than those who saw static routes but this did not affect people’s multimedia choices which, although diverse, were systematic. Spoken text was more often selected by people who had lower scores on the spatial working memory task, than by the older adults with higher scores. This suggests that older people with cognitive limitations recognise ways in which multimedia information can be supportive
Sistem COBISS v Makedoniji s posebnim poudarkom na izkušnjah katalogizatorjev
No full textThe COBISS system in Macedonia especially cataloguing is one of the key issues in the field of librarianship. The purpose of this master thesis is to improve effectiveness and efficiency in COBISS system in Macedonia from cataloguers\u27 point of view. On the other hand we are trying to determine issues causing difficulties and challenges facing cataloguers with licence in COBISS system in Macedonia. According to the obtained results cataloguers consider that they: are satisfied with module COBISS/Cataloguing and have a positive experience working in this environmentconsider that quality of processed records due to the fact of a good knowledge of cataloguing rules, experience in processing of bibliographic records as well as appropriate formal and informal educationcourses and seminars held in NUL are not sufficient should be with higher quality to offer new contents and more frequenthave difficulties with application and interpretation of traditional cataloguing code. Potential solutions are: construction of a higher-education system in the field of LIS following contemporary trendsintroduction of national cataloguing code harmonized according to the IFLA rules for cataloguingincreasing higher quality control of bibliographic records and greater focus on responsibility and performance of cataloguers.Sistem za vzajemno katalogizacijo COBISS predstavlja v Makedoniji zelo pomembno področje bibliotekarstva. Namen magistrskega dela je izboljšati učinkovitost modula za katalogizacijo na osnovi mnenj katalogizatorjev. Prav tako želimo ugotoviti težave, s katerimi se pri svojem delu srečujejo makedonski katalogizatorji z licenco. S pomočjo anketnega vprašalnika smo ugotovili, da so katalogizatorji zadovoljni z modulom za katalogizacijo in da imajo z njim dobre izkušnje. Zavedajo se tudi pomena kakovosti bibliografskih zapisov, ki je po njihovem mnenju odvisna od poznavanja katalogizacijskih pravil, delovnih izkušenj ter formalne in neformalne izobrazbe. Izobraževanje katalogizatorjev, ki poteka v NUL, ne ustreza tako glede novih vsebin kot glede pogostosti tečajev. Katalogizatorji imajo težave pri uporabi in interpretaciji katalogizacijskega pravilnika. Glede na rezultate raziskave predlagamo sodobnejši univezitetni sistem izbraževanja na področju bibliotekarstva in informacijskih znanosti. Potreben je tudi moderen katalogizacijski pravilnik, ki temelji na Iflinih načelih. Več pozornosti je treba nameniti preverjanju kakovosti bibliografskih zapisov in tudi individulani odgovornosti katalogizatorjev
The Reflective Entrepreneur
No full textIn a world where entrepreneurial success often seems deceptively accessible, it is not always clear what makes a person entrepreneurial. In this book, Dimo Dimov offers a reflective insight into the entrepreneurial journey, striking up a conversation about entrepreneurship in order to challenge and untangle existing preconceptions. A discussion of challenges and tensions such as idea versus opportunity, genius versus lunatic, and skill versus luck forms the foundation of the book, while the second part offers actions and considerations which can help the reader to seek opportunities in a fractious environment. The final part of the text focuses on the collective spirit in entrepreneurship, arising from the interplay between participation and outcomes. The author brings a succinct diversity to the field, making this book essential reading for undergraduate and postgraduate students on entrepreneurship courses, as well as scholars, researchers, and practitioners looking for a new perspective on entrepreneurship
The Reflective Entrepreneur
No full textIn a world where entrepreneurial success often seems deceptively accessible, it is not always clear what makes a person entrepreneurial. In this book, Dimo Dimov offers a reflective insight into the entrepreneurial journey, striking up a conversation about entrepreneurship in order to challenge and untangle existing preconceptions. A discussion of challenges and tensions such as idea versus opportunity, genius versus lunatic, and skill versus luck forms the foundation of the book, while the second part offers actions and considerations which can help the reader to seek opportunities in a fractious environment. The final part of the text focuses on the collective spirit in entrepreneurship, arising from the interplay between participation and outcomes. The author brings a succinct diversity to the field, making this book essential reading for undergraduate and postgraduate students on entrepreneurship courses, as well as scholars, researchers, and practitioners looking for a new perspective on entrepreneurship
Repeatability analysis of two methods for height measurements in the micrometer range
No full textA precision study of two height measuring methods is carried out. The first method is based on a White Light Interferometer (WLI) and the second on a Co-ordinate Measuring Machine (CMM) equipped with an optical probe. The height measurements considered are in the range [150; 250] μm. Point and interval estimates of repeatability are reported in the paper. This study presents experimental evidence that, under repeatability conditions, the precision of the WLI method is about five times higher than that of the optical CMM method. Furthermore, the precision of WLI is constant over the investigated height range whereas a dependency of the CMM precision on the nominal dimensions is identified. For both methods a linear relationship is detected between the random error and the sequence in which the measurements are taken
Thin-wall injection molding of polypropylene using molds with different laser-induced periodic surface structures
No full textIn injection molding, high pressure is required to completely replicate the mold geometry, due to the viscosity of thermoplastic polymers, the reduced thickness of the cavity, and the low mold temperature. The reduction of the drag required to fill a thin-wall injection molding cavity can be promoted by inducing the strong slip of the polymer melt over the mold surface, which occurs within the first monolayer of macromolecules adsorbed at the wall. In this work, the effects of different laser-induced periodic surface structures (LIPSS) topographies on the reduction of the melt flow resistance of polypropylene were characterized. Ultrafast laser processing of the mold surface was used to manufacture nano-scale ripples with different orientation and morphology. Moreover, the effects of those injection molding parameters that mostly affect the interaction between the mold surface and the molten polymer were evaluated. The effect of LIPSS on the slip of the polymer melt was modeled to understand the effect of the different treatments on the pressure required to fill the thin-wall cavity. The results show that LIPPS can be used to treat injection mold surfaces to promote the onset of wall slip, thus reducing the injection pressure up to 13%. POLYM. ENG. SCI., 59:1889–1896, 2019. © 2019 Society of Plastics Engineers
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