Massornas politiska torgmöten eller de motiverades klubbar? En studie av medborgardiskussioner på Internet

Abstract: Political mass discussion or closed societies for the motivated? A study of citizens' discussion on the Internet

Suomalaisten yleisten kirjastojen Internet-palveluiden käytettävyys

Summary: The usability of the Internet services of Finnish public libraries

Asiantuntijuuden tuottaminen nuorten Internet-keskustelualueella

Summary: Building up the expertise of hacker groups in offline Internet conversation

DFMA- Analysis and Aspects of Applying Internet Based Collaborative Design for Axial Eccentric Oil-Pump Design

The integrated system of design for manufacturing and assembly (DFMA) and internet based collaborative design are presented to support product design, manufacturing process, and assembly planning for axial eccentric oil-pump design. The presented system manages and schedules group oriented collaborative activities. The design guidelines of internet based collaborative design & DFMA are expressed. The components and the manufacturing stages of axial eccentric oil-pump are expressed in detail. The file formats of the presented system include the data types of collaborative design of the product, assembly design, assembly planning and assembly system design. Product design and assembly planning can be operated synchronously and intelligently and they are integrated under the condition of internet based collaborative design and DFMA. The technologies of collaborative modelling, collaborative manufacturing, and internet based collaborative assembly for the specific pump construction are developed. A seven-security level is presented to ensure the security of the internet based collaborative design system.