Search for dissertations about: "current measurement"

Showing result 1 - 5 of 512 swedish dissertations containing the words current measurement.

2. 1. Aspects on measuring electrical current utilizing magnetic zero-flux technique

   Author : Maria Hammarqvist; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Current Transformer; AC Current; Frequency Response; Measurement Uncertainty; Traceability; Zero-Flux Measurement Technique; Zero-Flux;

   Abstract : The utilization of high accuracy measurements of electrical quantities is a prerequisite for the development of modern society. Generally, measurements serve different purposes and hence the criteria for the measurement equipment and method are different. READ MORE

4. 2. Inductive measurement of narrow gaps for high precision welding of square butt joints

   Author : Edvard Svenman; Anna-Karin Christiansson; Högskolan Väst; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Eddy current; Seam tracking; Measurement; Laser beam welding; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

   Abstract : A recent method in aero engine production is to fabricate components from smaller pieces, rather than machining them from large castings. This has made laser beam welding popular, offering high precision with low heat input and distortion, but also high productivity. READ MORE

5. 3. Health care need : Meaning and measurement

   Author : Per-Erik Liss; Lennart Nordenfelt; Linköpings universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Concept of needs; health needs and health care needs. Needs assessment; resource allocation; setting health priorities; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

   Abstract : Determining how the health services are to be, and allocating health care, are basic issues in health policy. Need is a frequent criterion for an ethical or rational allocation of health service resources. The primary aim of this study is to analyse and explicate the concept of health care need.Methods for measuring health care need are examined. READ MORE

6. 4. On Measurement and Analysis of Internet Backbone Traffic

   Author : Wolfgang John; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Packet Header; Internet Backbone; Header Anomaly; Malicious Traffic; Connection Behavior; Peer-to-Peer; Measurement; Passive; Classification; Traffic Analysis;

   Abstract : In the last decade, the Internet emerged undoubtedly as the key component for commercialand personal communication. The success of the Internet is mainly based on its versatilityand flexibility, allowing for the development of network applications ranging from simpletext based utilities to complex systems for e-commerce and multi-media content. READ MORE

7. 5. Current measurement by real-time counting of single charges

   Author : Jonas Bylander; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; array of tunnel junctions; Coulomb blockade; radio frequency single electron transistor; SET oscillations; time correlated tunnelling; metrology; current standard; SET; charge solitons;

   Abstract : The first real-time observation of time correlated single-electron tunnelling is reported in this thesis. This is a direct detection of charge discreteness in an electrical current.When a current, I, flows through a chain of metallic islands, connected by small tunnel junctions, a lattice of charges is formed due to the Coulomb repulsion. READ MORE