12171458
Making web sites be places for social interaction
Technology can play an important role in enabling people to interact with each other. The Web is one such technology with the affordances for sharing information and for connecting people to people. In this paper, we describe the design of two social interaction Web sites for two different social groups. We review several related efforts to provide principles for creating social interaction environments and describe the specific principles that guided our design. To examine the effectiveness of the two sites, we analyze the usage data. Finally, we discuss approaches for encouraging participation and lessons learned.
14884765
Function of Social Browsing in Integration into a Workplace
7785175
Dynamic forms: an enhanced interaction abstraction based on forms
Dynamic Forms supports developers in creating a single, dynamic, scrollable form using a form description language. The virtual form is structured into sections and subsections so that effective organization and navigation of the information are possible. The object-oriented, textual, and interpretive nature of the language allow developers to incorporate user suggestions concerning changes to a dynamic form quickly and with minimal tools. Dynamic Forms is based on an understanding of the environment in which data-entry tasks are carried out, the manner in which users perform their tasks, and how the users utilize human and computer resources in solving these tasks.
2129731
Sensing activity in video images
Video-based awareness tools increase familiarity among remote group members and provide pre-communication information, Low-cost iconic indicators provide less but more succinct information than video images while preserving privacy. Observations of and feedback from users of our video awareness tool suggest that an activity sensing feature along with a variety of privacy options combines advantages of both the video images and iconic indicator approaches. We introduced the activity sensing feature in response to user requests. It derives activity information from video images and provides options to control privacy and improves the usability of video-based awareness tools.
5106605
Prototyping considered dangerous
In this paper, we argue that prototypes can hinder, rather than aid effective communication. The dangers are: (1) prototypes may contain hidden assumptions which might surface too late; (2) obtaining feedback in the context of use is prohibitively expensive and rarely done; and (3) partly as a consequence of these problems, prototypes cause a focus on displays and other surface features of computers, not on the more difficult problem of how people function in their environments to solve problems. We propose design intent which specifies how a system will fit in and interact with the environment in which it is placed and expectation agents which monitor the system in use and detect uses counter to the intent as ways to alleviate these dangers.
40848730
User's command line reference behaviour: Locality versus recency
17399297
Distinctions Among Different Types of Generalizing in Information Systems Research
It is incorrect and even harmful that many information systems researchers typically criticize their own intensive (qualitative, interpretive, critical, and case) research as lacking “generalizability.” We untangle and distinguish the numerous concepts now confounded in the single term “generalizability,” which are generality, generalization, generalize, general and generalizing. These clarified terms allow us to identify four distinct forms of generalizing (everyday inductive generalizing, everyday deductive generalizing, academic inductive generalizing, and academic deductive generalizing), each of which we illustrate with an information systems-related example. The clarified terms provide the basis for an explanation of how information systems researchers who perform intensive research may properly lay claim to generality for their research.
1879649
Low-Complexity Approaches to Slepian&#8211;Wolf Near-Lossless Distributed Data Compression
This paper discusses the Slepian-Wolf problem of distributed near-lossless compression of correlated sources. We introduce practical new tools for communicating at all rates in the achievable region. The technique employs a simple "source-splitting" strategy that does not require common sources of randomness at the encoders and decoders. This approach allows for pipelined encoding and decoding so that the system operates with the complexity of a single user encoder and decoder. Moreover, when this splitting approach is used in conjunction with iterative decoding methods, it produces a significant simplification of the decoding process. We demonstrate this approach for synthetically generated data. Finally, we consider the Slepian-Wolf problem when linear codes are used as syndrome-formers and consider a linear programming relaxation to maximum-likelihood (ML) sequence decoding. We note that the fractional vertices of the relaxed polytope compete with the optimal solution in a manner analogous to that observed when the "min-sum" iterative decoding algorithm is applied. This relaxation exhibits the ML-certificate property: if an integral solution is found, it is the ML solution. For symmetric binary joint distributions, we show that selecting easily constructable "expander"-style low-density parity check codes (LDPCs) as syndrome-formers admits a positive error exponent and therefore provably good performance
41220365
Presumed Versus Actual Organizational Culture: Managerial Implications for Implementation of Information Systems
This paper builds on Markus and Rohey's four-level framework of analyzing resistance to implementation of information systems. The four levels of analysis pertain to the user, the organizational structure, the political power and the environment. We suggest adding a complementary fifth level pertaining to the organizational culture. The paper proceeds from a definition of culture to an explanation of its dimensions, in line with the management and control approach to culture. A case study of an attempt to implement an information system is presented and the five levels of analysis are used to explain the implementation failure
7521097
Using a case study to test the role of three key social enablers in ERP implementation
The literature indicates that three key social enablers--strong and committed leadership, open and honest communication, and a balanced and empowered implementation team are necessary conditions/precursors for successful enterprise resource planning (ERP) implementation. In a longitudinal positivist case study, we find that, while all three enablers may contribute to ERP implementation success, only strong and committed leadership can be empirically established as a necessary condition. This presents a challenge to future ERP researchers for resolving apparent contradictions between the existing literature and the results of our analysis. One possible direction for future research would be to undertake an interpretive re-examination of the rationalisitic assumptions that underlie much of the existing literature on ERP systems implementation.
28520987
Object-oriented protocol specification