Sökning: "Draw control strategy"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden Draw control strategy.

  1. 1. Draw control strategy for sublevel caving mines : A holistic approach

    Författare :Gurmeet Shekhar; Håkan Schunnesson; Anna Gustafson; Jesper Martinsson; Laeeque Daneshmend; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Draw control strategy; sublevel caving SLC ; loading process; draw point; caving operation; Bayesian statistics; probability models; economic models; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Sammanfattning : Sublevel caving is an underground mass mining method used for extracting different types of ores from the earth crust. Mines using sublevel caving (SLC) as the primary mining method are generally highly mechanized with standardized and independent unit operations. LÄS MER

  3. 2. Draw control strategy for sublevel caving mines : A probabilistic approach

    Författare :Gurmeet Shekhar; Håkan Schunnesson; Anna Gustafson; Jesper Martinsson; Matthias Wimmer; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Draw control; sublevel caving; probability models; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Sammanfattning : Sublevel caving is an underground mass mining method used for extracting different types of ores from the earth crust. Mines using sublevel caving (SLC) as the primary mining method are generally highly mechanized with standardized and independent unit operations. LÄS MER

  4. 3. Decision-making in SME internationalization : The role and use of Control in decisions made under the uncertainties of foreign market expansion

    Författare :Luis Oliveira; Martin Johanson; Carin Nordström; Katarina Blomkvist; Högskolan Dalarna; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; SME internationalization; non-predictive strategy; control-based strategy; environmental uncertainty; international market performance; Complex Systems – Microdata Analysis; Komplexa system - mikrodataanalys;

    Sammanfattning : Small and medium-sized enterprises (SMEs) make the backbone of virtually all economies but most of them are only marginally engaged with global markets, particularly those from developing countries. Our ability to advise these firms is currently limited for two major reasons: on the one hand, conventional International Business literature treats the firm as a black box and does not advance in decision-making dynamics that are critical to SMEs' foreign expansion; on the other, recent SME internationalization studies have achieved important progress but seem dependent on the use of Effectuation theory to represent the decisions that guide SME internationalization. LÄS MER

  5. 4. Överensstämmelse mellan situationer och ekonomistyrsystem : en studie av medelstora företag

    Författare :Lars Svensson; Företagsekonomiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; measurement; middle-sized manufacturing companies; fit; effectiveness; business strategy; production pechnology; enviroment; situation; Management Control Systems; contingency factors; Management of enterprises; Företagsledning; management;

    Sammanfattning : The focus of the thesis is the situation of and the management control systems in middle-sized, manufacturing companies. We have examined the relevance of different types of management control systems for different situations and formulated taxonomies of the contingency factors environment, production situation and business strategy. LÄS MER

  7. 5. Run-Up Transient Analysis for Salient Pole Wound Field Synchronous Motors : Field winding and power electronics implications for a smoother and cooler asynchronous start

    Författare :Roberto Felicetti; Urban Lundin; Andreas Binder; Uppsala universitet; []
    Nyckelord :apparent resistance; cable modeling; current control; transmission line model; eddy currents; field winding; frequency analysis response; Fourier Transform; impedance mismatch; main inductance; overvoltage; parasitic capacitance; partial discharge; quality factor; ringing; slew rate; stray inductance; voltage gradient; winding resonance frequency; asynchronous start; run-up; torque ripple; reluctance torque; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : Salient Pole Wound Field Synchronous Machines have better efficiency at full load than asynchronous machines of the same capability. Moreover, where asynchronous machines need inherently to draw a magnetizing current from the grid, Salient Pole Wound Field Synchronous Machines can work efficiently at unity power factor. LÄS MER