Sökning: "Significant use"

Visar resultat 21 - 25 av 3614 avhandlingar innehållade orden Significant use.

1. 21. Recent changes in land use and productivity in agro-pastoral Inner Mongolia, China

   Författare :Sara Brogaard; LUCSUS; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; geomorphology; Physical geography; China; Inner Mongolia; remote sensing; LUE model; primary production; GPP; yield variability; land degradation; farmers’ perception; productivity; Land use; pedology; cartography; climatology; Fysisk geografi; geomorfologi; marklära; kartografi; klimatologi;

   Sammanfattning : This study challenges the prevailing assumption that the expansion of cultivated land areas and increasing number of livestock in the agro-pastoral regions of northern China have aggravated the process of land degradation since the start of the rural reforms in 1978. Land-use and productivity trends in the Inner Mongolia Autonomous Region (IMAR), with special attention to the Keerqin steppe region, have been analysed. LÄS MER

3. 22. Psychotherapy for Substance Use Disorders – the importance of affects

   Författare :My Frankl; Björn Philips; Peter Wennberg; Rolf Holmqvist; Stig Poulsen; Linköpings universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Substance Use Disorders; comorbidities; ADHD; emotions; psychodynamic psychotherapy; self-compassion; common factors; Substansbrukssyndrom; samsjuklighet; ADHD; emotioner; psykodynamisk terapi; självmedkänsla; gemensamma faktorer;

   Sammanfattning : Substance use disorder (SUD) is a serious disorder with severe consequences for the individual, the family and for society. Comorbidity is common in the SUD population and the diversity of the disorder calls for a multiplicity of treatment options.The overall aim of this thesis was to explore the role of affects in psychotherapy for SUD. LÄS MER

4. 23. Child maltreatment among young adolescents: Effects on mental health, academic functioning and substance use

   Författare :Johan Melander Hagborg; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Child maltreatment; adolescence; academic functioning; substance use; emotional maltreatment; mental health; school absenteeism;

   Sammanfattning : The main aim of this doctoral thesis was to investigate how experiences of childhood maltreatment affected three developmentally salient areas of functioning in adolescent development. Participants were recruited through the Swedish multidisciplinary program Longitudinal Research on Development in Adolescence (LoRDIA). LÄS MER

5. 24. Assessing Energy Use and Carbon Emissions to Support Planning of Environmentally Sustainable Earthmoving Operations

   Författare :Hassanean S.H Jassim; Thomas Olofsson; Nashwan Dawood; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energy use; CO2 emissions; earthmoving operation; operational characteristics; project conditions; selection equipment configuration; Byggproduktion och teknik; Construction Management and Building Technology;

   Sammanfattning : Road and infrastructure projects have significant environmental impacts due to their high energy consumption and CO2 emissions. Among it, earthmoving operations contribute disproportionately to these impacts because of their intensive use of heavy machinery. LÄS MER

7. 25. Structure and Stability of Ecological Networks : The role of dynamic dimensionality and species variability in resource use

   Författare :David Gilljam; Bo Ebenman; Peter Münger; José Montoya; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Sammanfattning : The main focus of this thesis is on the response of ecological communities to environmental variability and species loss. My approach is theoretical; I use mathematical models of networks where species population dynamics are described by ordinary differential equations. LÄS MER