Sökning: "Horizontal curves"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden Horizontal curves.

  1. 1. Optimisation of single horizontal railway curves : procedures involving evaluation of vehicle reactions

    Författare :Björn Kufver; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  3. 2. Safety Evaluation of Road Characteristics

    Författare :Sarbaz Najib Othman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Accident data; FOT data; Overtaking maneuvers; Road safety; PC-Crash; Critical road parameters; Horizontal curves;

    Sammanfattning : Accidents are rare and widely distributed on the road network, which poses a challenge for road safety improvement. Traditional methods alone, such as accident analyses and experimental studies, do not explain all accident causation factors. LÄS MER

  4. 3. Optimisation of horizontal alignments for railways - Procedures involving evaluation of dynamic vehicle response

    Författare :Björn Kufver; KTH; []
    Nyckelord :Railway; track geometry; alignment; cant; climbing ratios; clothoids; guiding forces; passenger comfort; Pct; superelevation ramps; simulation; track shift forces; track vehicle interaction; transition curves; vehicle dynamics; wheel rail forces;

    Sammanfattning : This doctoral thesis summarises and deepens eightpublications on a project concerning railway alignments.The thesis presents an approach to definingequally costlyalignment alternatives. LÄS MER

  5. 4. Digital straight line segments and curves

    Författare :Shiva Samieinia; Stockholms universitet; []
    Nyckelord :Digital geometry; digital straight line segments; chord property; Khalimsky-continuous function.;

    Sammanfattning : This thesis consists of two papers:Paper A. Chord properties of digital straight line segments.This paper treats digital straight line segments in two different cases, in the 8-connected plane and in the Khalimsky plane. We investigate them using a new classification, dividing them into a union of horizontal and diagonal segments. LÄS MER

  7. 5. Making Equity in Public Transport Count

    Författare :Isak Rubensson; Yusak Susilo; Oded Cats; Karst Geurs; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Public transport; Subsidies; Fare-schemes; Accessibility; Crowding; transport justice; Equity; Distribution; Gini index; Lorenz curves; Customer satisfaction; Service quality; Preferences; Reliability; Transportsystem; Transport Systems; Transportvetenskap; Transport Science;

    Sammanfattning : Political and public focus on equity and justice outcomes of public policies is on the rise all over the world. Equity is both philosophically motivated and often decreed by law and in planning directives to be monitored when policies are changed, however oftentimes these equity assessments are vague, qualitative and carries low weight in policy decision processes. LÄS MER