281 research outputs found

    A Multivariate Analysis of the Human Factors and Preferences Towards Digital Publishing Platforms for the iPad

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    Tablet computers have been widely adopted in America today, with 34% of American adults ages 18+ owning this type of digital device (PEW, 2013). With the emergence of new portable computer technology, reading on digital devices has become more popular than ever before. In particular, tablet computers have enabled users to read enhanced e-book material that, while still text-driven, incorporates all facets of multimedia and technology. With many different digital publishing solutions available for publishers to deploy their content, the goal of this research study was to determine whether there are significant differences in user preferences and comprehension for a publication re-created with three different digital publishing solutions (i.e., Adobe DPS, iBooks Author, and EPUB). The methodology of this research study was a human factors experiment testing for a significant difference in the reading experience of subjects exposed to one of three digital publications. A field experiment consisting of ninety subjects assessed these publications, thirty for each of the three output formats. No significant difference among the publications was found for readers\u27 pleasure with the overall experience or for their interaction with the multimedia elements. A marginally significant difference among the publications was found for the value added by the multimedia elements of the publication. A significant difference among the publications was found for the readers\u27 ability to recognize information and comprehend material from the publication. Ultimately, these results showed a trend that readers\u27 of the digital publishing platforms that allowed for greater interactivity experienced more value added by the multimedia elements of the publication and increased ability to recognize information from the publication. However, the pleasure with the overall experience of the publication and the readers\u27 interaction with the multimedia elements in the publication was determined to not have a significant difference between the publications. Therefore, while readers did not tend to interact differently with the multimedia content or experience any greater pleasure based on the publication they read, readers of more interactive publications did tend to see more value added by the multimedia elements and were better able to recognize the information they had experienced

    Discovery of low mass objects in Taurus

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    In infrared (2.2 micron, K-band) search of small regions (25 in square) near 26 members of the Taurus star-forming association has revealed 20 dim (K = 13-16 mag) stellar objects near 13 of them. Of these 20 objects, 9 are exceptionally red. It is argued that these 9 are probably also Taurus members. From the luminosities (0.4 to 4 times 10 the -3 power luminosity) and ages (estimated at 10(exp 6) years), masses can be determined by reference to theoretical low-mass cooling curves. The masses are in the range 0.005 to 0.015 solar mass, i.e., low-mass brown dwarfs. Proper motion studies of 7 of the objects visible on the POSS plates conducted by Burton Jones establish that 4 are highly probable Taurus members while 1 is a possible member

    Deep CCD Photometry and the Initial Mass Function of the Core of the OB Cluster Berkeley 86

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    Based on photometry of deep CCD frames of the central region of the OB cluster Berkeley 86, we derive the cluster mass function. The absence of current star formation, and the cluster\u27s young age of about 6Myrs, leads to the conclusion that the initial mass function (IMF) and the current mass function are identical for stars with m\u3c 10msun_. In the range of 1.2-20msun_, an IMF with a slope of {GAMMA}=-1.3+/-0.3 is found. This value agrees well with other recent determinations of young clusters IMFs which are close to the classical Salpeter IMF with {GAMMA}=-1.35. Sections of the IMF of Berkeley 86 that are significantly steeper, or flatter, are most likely the result of a dip in the star\u27s mass distribution in the range of 3.5-10msun_. Similar dips may have led to steep IMFs over narrow mass ranges, as reported in the literature for some other clusters. No sign for a low mass turn-over in the IMF of Berkeley 86 is found for masses extending down to 0.85 msun _ (Refer to PDF file for exact formulas)

    PRIVACY AND PERSONAL DATA PROTECTION IN SELF-DRIVING CAR: SUGGESTION FOR LEGAL REGULATION IN SERBIA

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    This paper deals with legal regulation in the field of the self-driving car (SDC), an autonomous vehicle without a human driver. A survey carried out in Serbia on the acceptability of this vehicle in everyday life indicated the distrust of the population in driving with SDCs due to concerns of violation the privacy, distrust in the protection of personal data and insufficient security and cyber security. For proper functioning and especially for artificial intelligence (AI) decision-making the SDC needs a large set of data, including personal information. In this paper the legal framework for collecting, storing, processing and erasing of personal data for SDCs is developed. Most of regulation are new, due to the technical novelty of the SDC, which uncouples the driver and the vehicle are in the driving process. In the paper, documents and acts which protect privacy according to the EUs General Data Protection Regulation (GDPR) are suggested. Principles for data security and, especially, for cybersecurity of data are legally regulated and proposed to be incorporated into the future law of transportation. The suggested legal regulation would increase the trust of population in the SDC

    Jedna metoda obnove stereografske izmjere na području općine Čoka

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    This research presents an approach to solving the problem of establishing the real estate cadastre in real estate cadastre services in Serbia, where stereographic survey still exists. These problems are analyzed, set the goal and solutions are proposed. Old, damaged and not updated plans, the impossibility of detecting changes in the missing parts of the plan or map are characteristics of the cadastre based on stereographic method for over 25% of the province of Vojvodina. Without up to date and current topographic data, there is not, nor is possible to simply, fast and accurately reach necessary data to establish and maintain the real estate cadastre. The main goal of this research is to propose the procedure for achievement of real estate cadastre throughout the territory covered by the stereographic projection. Proposed procedure is based on the implementation of new technologies for collecting and processing of graphic and alphanumeric data, using geographic information systems technology, digital technology and photogrammetry. Photogrammetric survey of the whole country (made in 2007), provides digital orthophoto plans to become the main source of data acquisition, especially in damaged cadastral maps. The new methodology used and tested on nearly 60% of the Čoka municipality area provides easy, fast and accurate data acquisition.U radu je prikazan jedan pristup u rješavanju problema uspostave katastra nekretnina u Službama za katastar nekretnina na području Srbije gdje još uvijek postoji stereografska izmjera. Analizirani su problemi koji se pojavljuju u ovom postupku i predložena su rješenja. Stari i oštećeni planovi, neažurnost, nemogućnost evidentiranja promjena na nedostajućim dijelovima planova ili karata karakteriziraju katastar zasnovan na stereografskoj izmjeri za preko 25% područja pokrajine Vojvodine, a bez ažurne i aktualne topografske podloge nema, niti se jednostavno, brzo i dovoljno točno može doći do potrebnih i dovoljnih podataka za izradu i održavanje katastra nekretnina. Ovim radom želi se predložiti postupak za izradu katastra nekretnina na cijelom području koje je pokriveno stereografskom projekcijom. Predloženi postupak je zasnovan na primjeni nekih od suvremenih tehnologija za prikupljanje i obradu grafičkih i alfanumeričkih podataka, korištenje tehnologije prostornih informacijskih sustava, upotrebi tehnologija digitalne fotogrametrije i topografije. Fotogrametrijska izmjera cijele države (izvedena 2007. godine), daje mogućnost da digitalni ortofoto planovi budu osnovni izvor prikupljanja podataka, pogotovo na oštećenim katastarskim planovima. Nova metodologija, koja je korištena i testirana na skoro 60% područja naselja Čoka, omogućava jednostavno, brzo i dovoljno točno prikupljanje tih podataka

    Web servis Otvorenoga geoprostornog konzorcija u složenim sustavima distribucije

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    The short review of the Open Geospatial Consortium (OGC) web service with regard to Web Map Service (WMS) and Web Feature Service (WFS) has been given in this work from the perspective of server and client applications. The problems of the exchange of spatial data in the complex systems as municipal service have been described. Based on analysis of data exchange between employees in the same company and exchange between municipal services the existing condition has been schematically shown. Having this in mind, the proposal of measures has been given to improve communication by implementing distribution OGC web service with assumption that improvement of communication initiates the progress of overall system as well. Suggested solution is based on open source WMS/WFS servers and clients, but with remark that large number of commercial desktop GIS systems has inbuilt support for OGC web service. In the end it has been pointed out to some possible specialized client’s requests in regard to data safety and control of data access, as well as some extended types of data such as topological structures, surfaces and alike. Described model of distribution exchange can be applied to all complex systems, but within smaller systems such as companies which consist of more sectors.Rad prikazuje kratki pregled web servisa Otvorenog geoprostornog konzorcija (OGC) u odnosu na Web Map Service (WMS) i Web Feature Service (WFS) iz perspektive aplikacija servera i korisnika. Opisani su problemi razmjene prostornih podataka u složenom sustavu kao zajedničkom servisu. Na temelju analize razmjene podataka između zaposlenika u istoj tvrtki i razmjene između servisa zajednice shematski je prikazano postojeće stanje. Imajući to na umu dan je prijedlog mjera za poboljšanje komunikacije koristeći raspodjelu OGC web servisa pod pretpostavkom da poboljšanje komunikacije pokreće također i razvitak cjelokupnog sustava. Predloženo rješenje temelji se na serverima i klijentima otvorenog servisa WMS/WFS, uz napomenu da veliki broj komercijalnih desktop GIS sustava ima ugrađenu podršku za OGC web servis. Na kraju je ukazano na neke moguće zahtjeve klijenata u vezi sa sigurnošću podataka i kontrolom pristupa podacima, kao i nekim proširenim tipovima podataka kao što su topografske strukture, površine i slično. Opisani model razmjene može se primijeniti na sve složene sustave, ali unutar manjih sustava kao što su tvrtke koje se sastoje od više sektora
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