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This tutorial describes experiences with applying a control theoretical approach to achieving performance guarantees in Web servers, with emphasis on delay control. A model for the server is formulated and translated into a control problem formulation. Limitations of the control theoretic approach are identified that arise due to system non-linearities and modeling inaccuracies. Solutions are prop
Abstract is not available.
Making a web browser haptically accessible, makes it possible also for visually impaired persons to access graphical properties such as the layout of a web browser. With haptic interaction, it will also be possible to access 3D objects (VRML or X3D fil
The issue of possession of the air has been debated over literally thousands of years. The Romans debated the ownership of the air above their cornfields. When man finally could construct aircraft, in this case a balloon, heavier-than-air in the 1780's it did not take long before the first regulation came into force. The issue of state sovereignty had been discussed since the national states s
Web accessibility has become increasingly important to ensure all people can benefit from the information and services available on the web. Despite the multiple international web accessibility standards, studies have revealed a low compliance rate by organizations globally. This study emphasizes that the successful incorporation of Web accessibility in an organization requires a holistic vision t
The classification of 2 532 new settlements in the Census of India 2011 as 'urban', and specifically as 'Census Towns', has brought small and emerging urban centres back into the purview of urban studies and urban development in India. Taking this to be a point of entry, this article seeks to explore how the urban has been framed and approached from different and competing epistemological standpoi
The strong CP problem and its solution are treated on the undergraduate level. We first review the theoretical background of symmetry and symmetry breaking in particle physics. The Goldstone model is treated for several simple systems: the linear sigma model, the Higgs mechanism and the interpretation of pions as pseudo-Goldstone bosons in QCD. The problem of lack of CP-violation in strong interac
At the Department of Business Administration you can study business administration with focus on accounting, finance, organization, business analytics, entrepreneurship or marketing. Each semester we offer around 70 different courses, most of them within programmes. The national application round for Bachelor's programmes and courses starting autumn 2026 is open 16 March–15 April. Courses and prog
Basic course informationEducation level: Third cycleGrade: Fail/PassSubject: Advanced Urban Wastewater TreatmentSwedish name: Avancerad Urban VA-teknikEntry requirements: This course is open for PhD students and for participants from the water sector. Course examiner: Karin JönssonCourse aimsAt the end of the course you should be able to:understand the basis of the current water and wastewater sys
https://www.waterresearchschool.lu.se/courses/course-overview-2024/advanced-urban-wastewater-treatment/course-plan - 2026-06-23
Gebel el-Silsila displays an astounding concentration of incised illustrations, of which anthropomorphic figures are frequent motifs. These figures were produced over several millennia; from prehistoric petroglyphs to pictorial graffiti of dynastic periods and throughout into Roman days. Spanning over six millennia visitors to Gebel el Silsila depicted huntsmen, warriors, boatmen, and horsemen, reGebel el Silsila displays an astounding concentration of incised illustrations, of which anthropomorphic figures are frequent motifs. These figures were produced over several millennia: from prehistoric petroglyphs to pictorial graffiti of dynastic periods and throughout into Roman days. Spanning over six millennia visitors to Gebel el Silsila depicted huntsmen, warriors, boatmen, and horsemen, re
