There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

计量经济分析 = Econometric analysis

How has Japan become a major economic power, a world leader in the automotive and electronics industries? What is the secret of their success? The consensus has been that, though the Japanese are not particularly innovative, they are exceptionally skilful at imitation, at improving products that already exist. But now two leading Japanese business experts, Ikujiro Nonaka and Hiro Takeuchi, turn this conventional wisdom on its head: Japanese firms are successful, they contend, precisely because they are innovative, because they create new knowledge and use it to produce successful products and technologies. Examining case studies drawn from such firms as Honda, Canon, Matsushita, NEC, 3M, GE, and the U.S. Marines, this book reveals how Japanese companies translate tacit to explicit knowledge and use it to produce new processes, products, and services.

The knowledge-creating company : how Japanese companies create the dynamics of innovation

物件導向軟體之架構(Object-Oriented Software Construction)探討

While the study of psychology has offered little in the way of explaining the creative process, Koestler examines the idea that we are at our most creative when rational thought is suspended--for example, in dreams and trancelike states. All who read The Act of Creation will find it a compelling and illuminating book.

The Act of Creation

This paper describes NESSlE1, an awareness environment for cooperative settings Key elements of NESSIE are an application independent generic infrastructure, an open and extendable protocol including dynamic event types, and a set of sensors and configurable indicators, both for discrete and contextual event notifications Special aspects of the NESSIE server are the support access control, reciprocity, event transformation, the provision of different interaction methods, the implementation of a subscription method that is based on interest profiles, as well as the possibility of sharing profiles among groups With the integration of real-world sensors and tangible interfaces for the presentation of awareness information, NESSIE enables new ways to foster task-oriented and social awareness

NESSIE: an awareness environment for cooperative settings

This paper, discusses the confluence of two major recent trends in distributed information systems engineering: the evolution from static content via personalized adaptive information provisioning to Web Services, and the emergence of mobile terminals with sufficient speed to serve as parts of information systems. The combination of both trends yields the idea of mobile Web Services. While a few pioneering mobile Web Service client systems have appeared recently, this paper explores the logical next step. Whether it is feasible to use mobile terminals such as Smart Phones also as Web Service providers ("Mobile Hosts"). We first discuss the desirability of such Mobile Hosts, then discuss the challenges for design and implementation, and finally present a prototype implementation that has been developed and evaluated in cooperation with a major mobile phone vendor.

/pdf/mobile-web-service-provisioning-ehmde5avy2.pdf

Mobile Web Service Provisioning

An event distribution model for a computer based cooperative working environment is presented. The proposed model aims to provide information about the on-going and past activities of collaborating users, based on the semantics and contextual relationships of the shared artifacts and contributes to increase the awareness of the ongoing state of affairs without overloading the user with additional information.

GroupDesk, a prototype implementation of this model is introduced. The system provides a simple environment for the coordination of cooperative document production. Support for shared awareness is achieved by visualizing the event information using the desktop metaphor.

/pdf/supporting-cooperative-awareness-with-local-event-mechanisms-a0bonxba0p.pdf

Supporting cooperative awareness with local event mechanisms: the groupdesk system

Proceedings of the international ACM SIGGROUP conference on Supporting group work: the integration challenge

This paper presents the P OLI Team solutions andexperiences with the support of ministerial workflows byelectronic circulation folders. An application scenario ispresented that illustrates the user actions and cooperationthat occur during the processing of a ministerial workflow.This scenario is afterwards examined to identify essentialrequirements for a computer based support of suchprocesses. Based on that this paper describes the design ofan electronic circulation folder and how this is augmentedby a support for digital signatures, the integration of paperdocuments and a video conferencing system to satisfy themajor user requirements.K e y w o r d sw o r k f l o w , electronic circulation folder, shared workspaces,digital signatures, participatory designINTRODUCTIONThe decision of the German parliament to move the capitalfrom Bonn to Berlin increases the demand for a computerand telecommunication based support of ministerialprocesses within and between dislocated governmentdepartments. In this context four projects have beenlaunched by the German research ministry in theframework of the POLIKOM [6] initiative. Each projectfocuses on specific aspects from the wide range ofcooperation support that is needed in this application field.The central objective of the P

Wolfgang Prinz

Papers

NESSIE: an awareness environment for cooperative settings

Mobile Web Service Provisioning

Supporting cooperative awareness with local event mechanisms: the groupdesk system

Proceedings of the international ACM SIGGROUP conference on Supporting group work: the integration challenge

Support for workflows in a ministerial environment