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Floating Points of Reference. Trust, Enchantment and The Shifting Visibilities of Digital Infrastructures

In 2012 Google started a campaign to make parts of its infrastructure visible. Up until that year the company’s data centers had been highly secret facilities hidden from the public eye. The visualization campaign was mainly based on stories and images distributed via the Internet. The images were often suggestive, invoking both enchantment and trust. The text starts by pointing out and discussin

Regularization of the limiting optimal controller in robust stabilization

In this paper, we consider the problem of robust optimization for a system with uncertainty of rank one. The main result is the regularization of the limiting optimal controller. We will give the method to obtain the low order suboptimal controller that provides the stability margin as close to the optimal one as we wish. The method is illustrated by some scalar examples.

Interactivity and Spatiality - Experiences of Modelling Real Work Places as Virtual Places in a VR Collabortive Environment

In this paper I will discuss interactivity and spatiality, including the relationships between virtual places and work places. The paper reports some initial experiences of using a virtual reality (VR) tool for collaborative modelling. The aim was to investigate how well this technology could support participatory design of work environments. In a pilot study a group of researchers carried out an

Establishing Cause-Effect Relationships in Activated Sludge Plants - what Can Be Controlled

Plant wide control problems in the activated sludge process have been revisited. The ultimate criteria for controlling a complete plant have been systematically addressed only infrequently. In principle, the effluent has to meet the standard at a minimal cost. Basically, the process is at the time driven by disturbances, mostly via the influent flow, but sometimes created within the plant. An esse

Social and visual style in virtual pedagogical agents

The paper addresses aspects of virtual pedagogical agents’ visual style (realism – iconization) in relation to their social style (task oriented – relation oriented). Two studies are presented that investigate which visual and social styles users prefer and how they articulate their preferences. The first study involved 42 university students; the second study involved 90 elementary school childre

Distributed generation – new technical solutions required in the distribution system

The share of distributed generation (DG) is expected to grow rapidly in near future. In addition to the environmental aspects also the shorter construction period can be considered as a key driving force accelerating the development. However, there are also some severe barriers before wider employment of DG is possible. One of them is the connection to network or grid. Especially when we consider

Climatic Design of Buildings using Passive Techniques

Buildings in developing countries are often designed without taking sufficient account of the climate. Factors such as the urban surroundings or site characteristics, orientation and architectural design of the building, choice of building materials, etc are not given enough importance. Consequently buildings often have a poor indoor climate, which affects comfort, health and efficiency. The probl

Selection through Uninterpretable Features

Abstract This paper offers a new description and explanation of morphological agreement, argument-verb agreement in particular. The hypothesis explored is that argument-verb agreement is directly related to selection of arguments (s-selection), i.e. s-selectional features are in fact ф-features ([PERSON, NUMBER(, GENDER)], and that morphological argument-verb agreement mirrors this relation. Call