Search (9 results, page 1 of 1)

0.078057356 = product of:
  0.15611471 = sum of:
    0.15611471 = product of:
      0.31222942 = sum of:
        0.31222942 = weight(_text_:205 in 4917) [ClassicSimilarity], result of:
          0.31222942 = score(doc=4917,freq=4.0), product of:
            0.31656274 = queryWeight, product of:
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.05014941 = queryNorm
            0.9863113 = fieldWeight in 4917, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.078125 = fieldNorm(doc=4917)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Classification

ST 205

RVK

ST 205

0.062445883 = product of:
  0.124891765 = sum of:
    0.124891765 = product of:
      0.24978353 = sum of:
        0.24978353 = weight(_text_:205 in 2150) [ClassicSimilarity], result of:
          0.24978353 = score(doc=2150,freq=4.0), product of:
            0.31656274 = queryWeight, product of:
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.05014941 = queryNorm
            0.789049 = fieldWeight in 2150, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.0625 = fieldNorm(doc=2150)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Classification

ST 205

RVK

ST 205

0.04683441 = product of:
  0.09366882 = sum of:
    0.09366882 = product of:
      0.18733764 = sum of:
        0.18733764 = weight(_text_:205 in 2379) [ClassicSimilarity], result of:
          0.18733764 = score(doc=2379,freq=4.0), product of:
            0.31656274 = queryWeight, product of:
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.05014941 = queryNorm
            0.59178674 = fieldWeight in 2379, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.046875 = fieldNorm(doc=2379)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Classification

ST 205 Informatik / Monographien / Vernetzung, verteilte Systeme / Internet allgemein

RVK

ST 205 Informatik / Monographien / Vernetzung, verteilte Systeme / Internet allgemein

0.031222941 = product of:
  0.062445883 = sum of:
    0.062445883 = product of:
      0.124891765 = sum of:
        0.124891765 = weight(_text_:205 in 142) [ClassicSimilarity], result of:
          0.124891765 = score(doc=142,freq=4.0), product of:
            0.31656274 = queryWeight, product of:
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.05014941 = queryNorm
            0.3945245 = fieldWeight in 142, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.03125 = fieldNorm(doc=142)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Classification

ST 205 [Informatik # Monographien # Vernetzung, verteilte Systeme # Internet allgemein]

RVK

ST 205 [Informatik # Monographien # Vernetzung, verteilte Systeme # Internet allgemein]

0.019514339 = product of:
  0.039028678 = sum of:
    0.039028678 = product of:
      0.078057356 = sum of:
        0.078057356 = weight(_text_:205 in 1443) [ClassicSimilarity], result of:
          0.078057356 = score(doc=1443,freq=4.0), product of:
            0.31656274 = queryWeight, product of:
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.05014941 = queryNorm
            0.24657783 = fieldWeight in 1443, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.01953125 = fieldNorm(doc=1443)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Classification

ST 205

RVK

ST 205

0.01379872 = product of:
  0.02759744 = sum of:
    0.02759744 = product of:
      0.05519488 = sum of:
        0.05519488 = weight(_text_:205 in 1433) [ClassicSimilarity], result of:
          0.05519488 = score(doc=1433,freq=2.0), product of:
            0.31656274 = queryWeight, product of:
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.05014941 = queryNorm
            0.17435685 = fieldWeight in 1433, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.01953125 = fieldNorm(doc=1433)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Footnote

Rez. in: Information - Wissenschaft & Praxis 56(2005) H.3, S.205 (E. Simon): "Wenn eine ältere Dame, so ab 50 aufwärts einen der großen Mediamärkte in Berlin wie z.B. Mediamarkt oder Saturn mit einem bestimmten Wunsch aufsucht, dessen Formulierung aber nicht auf profundem informationstechnologischem Wissen beruht, dann fällt sie entweder in ein schwarzes Loch oder sie hat den großen Wunsch, falls sie etwas furchtsam ist, dass sich ein großes schwarzes Loch auftut, in dem sie verschwinden kann. In den meisten Fällen wird sie ohne das gewünschte Produkt mit dem leichten Gefühl der Verzweiflung diese informationstechnologischen Kundentempel verlassen. Diese schwarzen Löcher hat der Autor mit seiner Titelwahl nicht gemeint, obwohl "im Sog der Informations- und Wissensindustrie" schon die Hilflosigkeit diese Gefühls trifft, sondern es geht ihm um die Kreation eines Schemas für die Verortung von Informationswissenschaft und Informationswirtschaft. Ratzek stellt fest, dass Informationsarbeit zu einem Ouasi-Monopol von Programmierern, Netzwerkingenieuren und - möchten wir hinzufügen - von unwissenden arroganten Verkäufern und Beratern mutiert, wobei die Leistungen der Informationsfachleute wie Bibliothekaren und der sogenannten Information Professionals zu einer Nebensächlichkeit verkommen. Die Arbeit der Informationsfachleute versteckt sich hinter dem, was der Verfasser "Informatikmimikry" nennt mit den Folgen Entmündigung - das können andere viel besser - und letztendlich Verlust des Image. Diesem können die BID-Professionen nur durch Kampagnen für die Public Awareness begegnen, wie sie in dem vom Autor herausgegebenen Buch Spielball Bibliotheken (Berlin 2004) dargestellt wurden. Außerordentlich erschwerend für die Entwicklung des Faches ist aber, dass alles, "Daten, Information und Wissen in einen Topf geworden wird" und dieser Eintopf dann als "Information" oder, weil es gerade angesagt ist, als "Wissen" serviert wird. Daher lässt Ratzek sich nicht darauf ein, den Gegensatz oder die Kongruenz zwischen Information und Wissen näher zu definieren, wie es z.B. in der angelsächsischen Literatur vorherrschend war und immer noch ist, wenn auch damit eine mehr auf case work oder Managementaufgaben im angelsächsischen Sinne gerichtete Blickrichtung gemeint ist, wie es z.B. in dem ausgezeichnet einsetzbaren Buch von Angela Abell und Nigel Oxbrow: Competing with Knowledge, The Information professional in the Knowledge Management Age. (tfpl/LA 1999) deutlich wird. Der Ansatz von Ratzek ist wissenschaftlich und dabei transdisziplinär. Er gibt nicht nur einen profunden Überblick über den Stand der Informationswissenschaft als Ausbildungsdisziplin, sondern er zieht auch die Entwicklungslinien z.B. zu den Grundlagen der Semiotik als Basis unserer durch das Icon beherrschten Informationsumwelt. Er setzt sich auch mit der Theorienbildung durch Gernot Wersig und Rainer Kuhlen auseinander und man würde sich diese knappen und präzisen Ausführungen in die Köpfe mancher Politiker wünschen, die heute noch einem diffusen Bildungsbegriff nachhängen, ohne die dafür notwendige Informationsinfrastruktur im Blick zu haben: So zitiert Ratzek nach Wersig:

0.011038977 = product of:
  0.022077953 = sum of:
    0.022077953 = product of:
      0.044155907 = sum of:
        0.044155907 = weight(_text_:205 in 340) [ClassicSimilarity], result of:
          0.044155907 = score(doc=340,freq=2.0), product of:
            0.31656274 = queryWeight, product of:
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.05014941 = queryNorm
            0.13948548 = fieldWeight in 340, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.312392 = idf(docFreq=217, maxDocs=44218)
              0.015625 = fieldNorm(doc=340)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Footnote

Rez. in: JASIST 58(2007) no.7, S.1066-1067 (X. Zhu u. J. Liao): "The user, without whom any product or service would be nothing, plays a very important role during the whole life cycle of products or services. The user's involvement should be from the very beginning, not just after products or services are ready to work. According to ISO 9241-11: 1998, Part 11, Usability refers to "the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of user." As an academic topic of human-computer interaction, Web usability has been studied widely for a long time. This classroom-oriented book, bridging academia and the educational community, talks about Web usability in a student-friendly fashion. It outlines not only the methodology of user-centered Web site design but also details the methods to implement at every stage of the methodology. That is, the book presents the user-centered Web-design approach from both macrocosm and microcosm points of view, which makes it both recapitulative and practical. The most important key word in Web Usability is "user-centered," which means Web developers should not substitute their own personal preferences for the users' needs. The book classifies Web sites into five types: E-commerce, informational, entertainment, community, and intranet. Since the methods used during Web development differ somewhat depending on the type of Web site, it is necessary to have a classification in advance. With Figure 1.3 on p. 17, the book explains the whole user-centered Webdevelopment life cycle (called "methodology" in this book review), which provides a clear path for Web development that is easy to understand, remember, and perform. Since all the following chapters are based on the methodology, a clear presentation of it is paramount. The table on p. 93 summarizes concisely all types of methods for requirements gathering and their advantages and disadvantages. According to this table, appropriate methods can be easily chosen for different Web site development projects. As the author remarked, "requirements gathering is central to the concept of user-centered design," (p. 98) and "one of the hallmarks of user-centered design is usability testing" (p. 205). Stage 2 (collect user requirements) and Stage 5 (perform usability testing) of the user-centered Web-development life cycle are the two stages with the most user involvement: however, this does not mean that all other stages are user unrelated. For example, in Stage 4 (create and modify physical design), frame is not suggested to be used just because most users are unfamiliar with the concept of frame (p. 201). Note that frequently there are several rounds of usability testing to be performed in the four case studies, and some of them are performed before the physical-design stage or even the conceptual-design stage, which embodies the idea of an iterative design process.

0.0067945533 = product of:
  0.0135891065 = sum of:
    0.0135891065 = product of:
      0.027178213 = sum of:
        0.027178213 = weight(_text_:22 in 5976) [ClassicSimilarity], result of:
          0.027178213 = score(doc=5976,freq=2.0), product of:
            0.1756147 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05014941 = queryNorm
            0.15476047 = fieldWeight in 5976, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03125 = fieldNorm(doc=5976)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

22. 3.2008 16:17:15

0.0058842557 = product of:
  0.0117685115 = sum of:
    0.0117685115 = product of:
      0.023537023 = sum of:
        0.023537023 = weight(_text_:22 in 149) [ClassicSimilarity], result of:
          0.023537023 = score(doc=149,freq=6.0), product of:
            0.1756147 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05014941 = queryNorm
            0.1340265 = fieldWeight in 149, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.015625 = fieldNorm(doc=149)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Classification

004.678 22

DDC

004.678 22

Footnote

Chapter 12 on "Web Presence" is a useful discussion of what it means to have a Web site that is indexed by a spider from a major Web search engine. Chapter 13 on "Mobile Computing" is very well done and gives the reader a solid basis of what is involved with mobile computing without overwhelming them with technical details. Chapter 14 discusses the difference between pull technologies and push technologies using the Web that is understandable to almost anyone who has ever used the Web. Chapters 15, 16, and 17 are for the technically stout at heart; they cover "Dynamic Web Pages," " Embedded Scripts," and "Peer-to-Peer Computing." These three chapters will tend to dampen the spirits of anyone who does not come from a technical background. Chapter 18 on "Symbolic Services-Information Providers" and chapter 19 on "OnLine Symbolic Services-Case Studies" are ideal for class discussion and students assignments as is chapter 20, "Online Retail Shopping-Physical Items." Chapter 21 presents a number of case studies on the "Technical Constraints" discussed in chapter 3 and chapter 22 presents case studies on the "Cultural Constraints" discussed in chapter 4. These case studies are not only presented in an interesting manner they focus on situations that most Web users have encountered but never really given much thought to. Chapter 24 "A Better Model?" discusses a combined "formalized/unformalized" model that might make Web applications such as banking and booking travel work better than the current models. This chapter will cause readers to think about the role of formalization and the unformalized processes that are involved in any application. Chapters 24, 25, 26, and 27 which discuss the role of "Data Exchange," "Formalized Data Exchange," "Electronic Data Interchange-EDI," and "XML" in business-to-business applications on the Web may stress the limits of the nontechnically oriented reader even though it is presented in a very understandable manner. Chapters 28, 29, 30, and 31 discuss Web services, the automated value chain, electronic market places, and outsourcing, which are of high interest to business students, businessmen, and designers of Web applications and can be skimmed by others who want to understand ebusiness but are not interested in the details. In Part 5, the chapters 32, 33, and 34 on "Interfacing with the Web of the Future," "A Disruptive Technology," "Virtual Businesses," and "Semantic Web," were, for me, who teaches courses in IT and develops ebusiness applications the most interesting chapters in the book because they provided some useful insights about what is likely to happen in the future. The summary in part 6 of the book is quite well done and I wish I had read it before I started reading the other parts of the book.