Sökning: "TEP"

Visar resultat 6 - 10 av 15 avhandlingar innehållade ordet TEP.

  1. 6. Efficient reduction techniques for a large-scale Transmission Expansion Planning problem

    Författare :Quentin Ploussard; Luis Olmos; Andres Ramos; Efraim Centeno; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energy; electricity; transmission expansion planning; linear programming; integer linear programming; relaxation methods; clustering; dimension reduction; network theory graphs ; partitioning algorithms; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The aim of Transmission Expansion Planning (TEP) studies is to decide which, where, and when new grid elements should be built in order to minimize the total system cost. The lumpiness of the investment decisions, together with the large size of the problem, make the problem very hard to solve. LÄS MER

  3. 7. Inguinal Hernia Surgery in Men - Chronic Pain and Sexual Dysfunction

    Författare :Nihad Gutlic; Malmö Institutionen för kliniska vetenskaper; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Groin hernia; Inguinal Hernia; Recurrence; Mesh repair; Chronic pain; Register Study; Hernia;

    Sammanfattning : Life time occurrence of inguinal hernia is 30% of men. Most are symptomatic and will require surgical treatment. Operation will commonly cure the hernia but remaining chronic pain or new pain is seen in 10–15%. Groin pain due to an inguinal hernia can cause impairment of sexual functions. LÄS MER

  4. 8. Strategies, Methods and Tools for Solving Long-term Transmission Expansion Planning in Large-scale Power Systems

    Författare :Desta Zahlay Fitiwi; Lennart Söder; Michel Rivier; Fernando de Cuadra; Andres Ramos; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transmission expansion planning; uncertainty and variability; optimization; stochastic programming; moments technique; clustering; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Driven by a number of factors, the electric power industry is expected to undergo a paradigm shift with a considerably increased level of variable energy sources. A significant integration of such sources requires heavy transmission investments over geographically wide and large-scale networks. LÄS MER

  5. 9. Electron transport properties of graphene and graphene field-effect devices studied experimentally

    Författare :Youngwoo Nam; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; dual-gated graphene field effect devices; thermopower; quantum Hall effect; graphene; Aharonov-Bohm effect; chemical vapour deposition;

    Sammanfattning : This thesis contains experimental studies on electronic transport properties of graphene with the Aharonov-Bohm (AB) effect, thermopower (TEP) measurements, dual-gated graphene field effect devices, and quantum Hall effect (QHE). Firstly, in an effort to enhance the AB effect in graphene, we place superconducting-metal (aluminium) or normal-metal (gold) mirrors on the graphene rings. LÄS MER

  7. 10. The interaction between the neuroretina and the retinal pigment epithelium : an electrophysiological study of the effects of possible messenger substances and their analogues

    Författare :Ragnheiður Bragadóttir; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : The retinal pigment epithelium (RPE) is of great importance in photoreceptor homeostasis. The photoreceptors are highly specialized cells which cannot survive without the RPE. It has been postulated that messenger substances are involved in the interaction between the RPE and the inner retina. LÄS MER