63,921 research outputs found
Veb pristupačnost i elektronskih formati za pristup informacijama za osobe sa invaliditetom
No full textAuthor described the context of the development of technological and social relationships and how they mutually made changes on ways how people interact with information and access to knowledge.
The development of societies changed significantly the role of libraries and posed new technological and other challenges due to the development of information technologies.
Since the development of information technologies caused expansion of production capacities in societies there was additional need to standardize production of formats of access, distribution, archiving of information. Due to democratic character of many developed societies openness of information and human rights emphasized an importance of legal aspects and rights of persons with disabilities. Author mentioned articles of the UN Convention of Rights of Persons with Disabilities which required that parties which ratified convention should implement accessibility standards for persons with disabilities. Author presented standards and technical specifications that define accessibility of web interface, computer software and file formats. It is especially emphasized that those standards are important in libraries. Modern libraries should adopt and use file formats which are accessible for persons with disabilities in order to avoid risk of increased discrimination against persons with disabilities if inaccessible technologies will be used. Author believes that this would help persons with disability to use library resources and services equally as other users do.
Fuchs
No full textStammtafel der Familie Fuchs... übergeben von Johann Seifert, J. U. C. Regensburg 171
In conversation with … Petra Fuchs
No full textPetra Fuchs wurde 1958 in Herten (NRW) geboren. Seit früher Kindheit ist sie infolge einer Polioerkrankung körperlich beeinträchtigt und nutzt einen Rollstuhl. Nach dem Lehramtsstudium (Deutsch, Geschichte, Pädagogik) an der Universität Bielefeld zog sie nach Berlin und gründete Mitte der 1980er Jahre mit Freundinnen die Theatergruppe Die erste Hilfe, die mit eigenen Stücken zum Thema Behinderung in mehreren Städten auftrat. 1989 gründete sie mit Rita Brucker (1960–2011) die Fuchs-Brucker-Filmproduktion und produzierte provokative Super-8-Spielfilme über die Lebenswirklichkeiten behinderter Menschen, insbesondere behinderter Frauen, die international Resonanz fanden.
Zur Existenzsicherung arbeitete sie ab 1987 in einem Hamburger Kinderheim für beeinträchtigte Mädchen und Jungen und rekonstruierte die Biographie der Heimgründerin Hilde Wulff (1898–1972). Diese historische Arbeit führte sie in einer Dissertation an der TU Berlin fort (Abschluss 1999), die sie später in zwei Monographien veröffentlichte. Von 2000 bis 2013 war sie am Institut für Geschichte der Medizin der FU Berlin/Charité als wissenschaftliche Mitarbeiterin in DFG-Projekten zur Patientengeschichte und zu NS-Medizinverbrechen tätig. Es folgten Leitungs- und Lehrtätigkeiten (u. a. Alice-Salomon Hochschule Berlin; Hochschule Zittau/Görlitz). Seit Mai 2022 ist sie im Ruhestand und Mitherausgeberin der Zeitschrift für Disability Studies/ZDS Journal of Disability Studies. Petra Fuchs was born in 1958 in Herten (North Rhine–Westphalia). Since early childhood, she has had a physical disability as a result of polio and uses a wheelchair. After completing teacher training in German, history, and education at Bielefeld University, she moved to Berlin, where in the mid-1980s she co-founded the theatre group Die erste Hilfe with friends; the group performed original productions on disability in several cities. In 1989, together with Rita Brucker (1960–2011), she founded the Fuchs–Brucker film production company and produced provocative Super 8 feature films that critically explored the lived realities of disabled people, especially disabled women, and received international attention.
To secure her livelihood, she began working in 1987 at a residential care facility in Hamburg for girls and boys with disabilities, where she reconstructed the biography of the institution’s founder, Hilde Wulff (1898–1972). She continued this historical work in a doctoral dissertation at the Technical University of Berlin, completed in 1999 and later published in two monographs. From 2000 to 2013, she worked as a research associate at the Institute for the History of Medicine at Freie Universität Berlin/Charité on DFG-funded projects on patient history and Nazi medical crimes. This was followed by leadership and teaching positions, including at the Alice Salomon University of Applied Sciences Berlin and the University of Applied Sciences Zittau/Görlitz. Since May 2022, she has been retired and has served as a co-editor of the Journal of Disability Studies / ZDS Journal of Disability Studies
Metafore visive per l’energia. Ergolandia, la valigia didattica per introdurre l’energia come tema verticale dalla Scuola dell’Infanzia alla Scuola Secondaria di primo grado.
No full textLa percezione dei processi naturali porta alla formazione della gestalt della forza. Questa gestalt è resa cosciente e accessibile alla mente umana con l’aiuto di metafore e storie.
Le forze della natura (vento, acqua, fuoco, ghiaccio, cibo, suolo, moto...) ci appaiono – e sono concettualizzate – come agenti potenti. Questi agenti hanno dimensione e intensi-tà, e il loro potere può essere misurato in termini di energia.
Sadi Carnot ha dimostrato che si può creare una scienza del calore usando le metafore di quantità di fluido, tensione, e potenza. Mostreremo come questo archetipo può essere generalizzato e come si possono costruire diagrammi di processo in termini di metafore visive.
Descriveremo poi come questo paradigma è sviluppato didatticamente, per l’educazione scientifica degli alunni dalla scuola dell’infanzia alla secondaria di primo grado, nella Valigia Ergoladia del progetto Max’s Worlds di MultiLab
Investigation of a flow field generated by a fractal grid based on experimental data and CFD simulations
No full textFractal grids generate turbulence by directly exciting many length-scales of different sizes simultaneously, rather than using the nonlinear cascade mechanism to obtain multiscale excitation, as it is the case for classical grids. These scales influence each other and show very different properties compared to all previously documented turbulent flows. In this work we present experimental wind tunnel and computer fluid dynamics (CFD) studies of the turbulent flow generated by a fractal grid under the same conditions. We did an extensive statistical study and a direct comparison between the experimentally and numerically acquired time series in order to investigate and compare one-point- and two-point-statistics. In addition we present an application of a stochastic method, so-called Langevin approach, to the experimentally and numerically acquired velocity increment time series to examine three-point-statistics in terms of Kramers-Moyal coefficients
On the regularity of local minimizers of decomposable variational integrals on domains in
No full textsummary:We consider local minimizers of variational integrals like or its degenerate variant with exponents which do not fall completely in the category studied in Bildhauer M., Fuchs M., Calc. Var. {\bf 16} (2003), 177--186. We prove interior - respectively -regularity of under the condition that . For decomposable variational integrals of arbitrary order a similar result is established by the way extending the work Bildhauer M., Fuchs M., Ann. Acad. Sci. Fenn. Math. {\bf 31} (2006), 349--362
Conceptual Metaphor in Physics Education: Roots of Analogy, Visual Metaphors, and a Primary Physics Course for Student Teachers
No full textWe show in what sense macroscopic physical science is a product of figurative (imaginative)
structures of the human mind. Conceptual structure in physics is perception based and
schematic and uses metaphoric, analogical, and narrative forms to extend direct perception and
conception to cases of less directly accessible phenomena. For instance, a theory of the dynamics
of heat can be rendered in a form analogous to that of fluids or electricity. We show how tools
using visual forms of metaphors employed in macroscopic physical science can be designed and
applied, and we briefly outline one application of the principles discussed here: a novel course
for kindergarten and primary school student teachers
The Effect of E-Reviews on Consumer Behaviour – An Exploratory Study on Agro-Tourism
No full textThe advancement of information technology has caused substantial repercussions in almost all global markets (De Valck et al. 2009), thereby leading to a “renegotiation of the relationships between companies and consumers” (Kucuk and Krishnamurthy 2007). The web 2.0, i.e., a varied range of internet-mediated communication tools, such as blogs, wikis, chat rooms, interactive web sites etc., has particularly empowered customers since they may signal and disseminate information about consumption experiences, creative ideas to other like-minded people. This situation constitutes a natural selection process within markets: only those firms who are able to tailor their marketing-mix by taking into account this empowered role of consumers will remain competitive. Kucuk and Krishnamurthy (2007) identified online strategies adopted along the supply-chain that positively affect the consumer in all relevant steps of the decision-making process. One of those branches of economic activity where web 2.0 technologies have changed market dynamics most profoundly is travel and tourism. On the supply side, the provision of freely accessible authoring tools has allowed the transition from static to dynamic tourism web sites (Fuchs and Höpken 2011). On the demand side, travel and destination information consists increasingly of user generated content which is often also referred to as online word-of-mouth (e-WOM) (Litvin Goldsmith and Pan 2008). One way to classify the typologies embraced by the notion of e-WOM takes into account the number of subjects involved in the communication process: accordingly, for instance, e-Mails usually belong to the one-to-one e-WOM (i.e., one sender and one recipient), whilst online product evaluations or e-reviews (i.e., ratings and reviews; Gretzel and Yoo 2008) fall into the category of one-to-many e-WOM (i.e., one sender and many receivers). Finally, many-to-many e-WOM (i.e., several senders and receivers) implies that many users interact with each others, such as in the case of chat rooms (cf., Fuchs and Höpken 2011). With respect to customer heterogeneity, the mentioned typologies mirror individuals’ differing preferences when it comes to choosing the most appropriate medium, both to search for and to disseminate e-WOM (Allsop et al. 2007). In order to improve the match between customer types and e-WOM media, several studies have analysed diverse facets of e-WOM based on socio-demographic data (Pan et al. 2010, Allsop et al. 2007), cognitive and affective dimensions, such as personal motives (Hennig-Thurau 2005), as well as preference elicitation patterns (Gretzel and Fesenmaier 2006). Moreover, in order to demonstrate the significance of e-WOM in tourist marketplaces, Xiang and Gretzel (2010) have shown the growing relevance of e-WOM disseminated through social media, particularly during the information search phase. By contrast, Pan et al. (2007) identified travel blog monitoring as a cost-effective marketing method for destination managers. Finally, Vermeulen and Seegers (2009) have analysed the role of e-reviews in increasing both the awareness of and the formation of (positive) attitudes towards hotels. The present research also focuses on the analysis of e-reviews of holiday accommodation, however, its scope differs from previous contributions in the following aspects. Firstly, the proposed approach is mainly centred on the phenomena of trust formation in e-reviews. There is anecdotal evidence that users consider sources of e-WOM as being relatively trustworthy, although most of this information is anonymously posted on the web. Nevertheless, this issue has received surprisingly little attention in the literature so far. Secondly and strictly connected to the former aspect, by using trust in e-reviews as an explanatory variable, we analyse the impact of e-reviews on the customer’s decision to book accommodation. Thus, in contrast to previous studies with the focus on the impact of e-reviews on consumers’ booking decisions (cf., Vermeulen and Seegers 2009), we attempt to assess the extent to which trust in e-reviews can ease the booking process of accommodation packages. More precisely, this study has two foci: (a) to explore the determinants that make anonymously posted e-reviews be perceived as trustworthy and (b) to assess the impact of trust in e-reviews on consumers’ decision to book accommodation. These goals will be reached by drawing on empirical work in the context of farm tourism in Germany. We will use the terms ‘farm tourism’ and ‘agro-tourism’ interchangeably to indicate “all tourism and recreation activities connected with a [...] farm or any agricultural, horticultural, fishery or agribusiness operation” (Phillip et al. 2010, Przezbórska 2003). In Germany, farm tourism is currently offered by around 25,000 farm operators and generates a yearly turnover of € 943 million (BMELV 2006). Mostly in the form of small and medium sized enterprises (SME), farm operators typically enter into this business with the motive to create additional income and occupation for family members. Similar to other countries, in Germany SME management often suffers from a shortage of tourism-related business knowledge (Huang 2006) which in turn leads to entrepreneurial restrictions particularly regarding innovations, product development and strategic planning (Veeck et al. 2006: 246). For instance, although the problem of infrastructural digital divide is not as serious as in other countries (i.e., almost all German farm operators have the necessary infrastructure to connect to the Internet and even possess their own web site), only a restricted number of suppliers so far has implemented web 2.0 technologies to improve the marketing effectiveness of their facility (Sidali 2009). Thus, a cultural digital divide is the problem for the majority of farm tourism operators who often ignore the benefits of adopting web 2.0 applications (Huang 2006, Hegarty and Przezborska 2005). In the same way that offline word-of-mouth has been traditionally one of the most successful ways of promoting farm tourism (Lemke 2003), it seems highly plausible that web 2.0-based applications offering e-WOM functionalities could be similarly effective. Moreover, they would help farm managers to cope with the perennial “lack of monitoring and evaluation of advertising effectiveness, [which] is one of [the] main weaknesses in farm operators’ promotional strategies” (Clarke 1996: 612). Reports of best practice corroborate these assumptions: Adams (2008) shows various ways to implement web 2.0 applications in a farm context in the USA. Moreover, farm tourism operators in Italy have started to promote their facilities by using online travel platforms, such as www.turismoitaliano.it and www.agriturismo.it. The latter platforms not only host farmers’ addresses and product descriptions, but similarly to the situation for international hotel chains (Fuchs et al. 2009), they also include online reviews continuously posted by farm guests (Severini 2008). However, despite these innovative examples from the US and Italy, farm tourism operators in Germany are still predominantly reluctant to let consumers evaluate their facilities and related service offers. Moreover, also from an e-business readiness standpoint, web 2.0 applications may represent challenges for many operators who, especially in the agricultural sector, can typically be described as “laggards” when it comes to technology adoption (Rogers 2003, Collecchia 1999 in: Fuchs et al. 2009). The situation is exacerbated by the fact that sector specific demand studies on tourist behaviour are often outdated to infer whether farm guests show a different behaviour towards web 2.0 tools than other tourist segments (Lüdke 2001). However, this information is necessary for upcoming investment decisions concerning web 2.0 technologies. Consequently, farm tourism operators are showing a systematic lack of knowledge about the net-benefits of implementing Internet technologies. Hence, in addition to the two research objectives mentioned above, we finally will test (by means of a group comparison approach), whether there are significant differences between farm tourists and non-farm tourists. The remainder of this contribution is organized as follows. Section 2 presents the theoretical framework by showing the determinants behind trust building processes related to e-reviews as well as the expected impact on consumption behaviour (i.e., accommodation choice). Section 3 discusses model testing on the base of survey data gathered by 216 respondents from Germany. Section 4 discusses the obtained findings across groups (i.e., farm tourists versus non-farm tourists). Section 5 deduces several managerial implications. Finally, the conclusion section sketches the agenda of future research with respect to web 2.0 technologies and niche suppliers, such as farm tourism
Game Design Camp and Leadership Camps Planned at the U of M Crookston for June and July 2007
No full textHolsinger Fuchs, Pam; Tollefson, Elizabeth. (2007). Game Design Camp and Leadership Camps Planned at the U of M Crookston for June and July 2007. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/220993
A U-statistic estimator for the variance of resampling-based error estimators
No full textWe revisit resampling procedures for error estimation in binary classification in terms of U-statistics. In particular, we exploit the fact that the error rate estimator involving all learning-testing splits is a U-statistic. Therefore, several standard theorems on properties of U-statistics apply.
In particular, it has minimal variance among all unbiased estimators and is asymptotically normally distributed. Moreover, there is an unbiased estimator for this minimal variance if the total sample size is at least the double learning set size plus two. In this case, we exhibit such an estimator which is another U-statistic. It enjoys, again, various optimality properties and yields an asymptotically exact hypothesis test of the equality of error rates when two learning algorithms are compared. Our statements apply to any deterministic learning algorithms under weak non-degeneracy assumptions.
In an application to tuning parameter choice in lasso regression on a gene expression data set, the test does not reject the null hypothesis of equal rates between two different parameters
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