Search for dissertations about: "unequal cost"

Showing result 1 - 5 of 8 swedish dissertations containing the words unequal cost.

2. 1. Optimal adaptive designs and adaptive randomization techniques for clinical trials

   Author : Yevgen Ryeznik; Warwick Tucker; Andrew Hooker; Franz König; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; optimal designs; optimal adaptive designs; randomization in clinical trials; restricted randomization; adaptive randomization; unequal cost; allocation ratio preserving randomization procedures; heterogeneous costs; multi-arm clinical trials; randomization-based inference; unequal allocation; Tillämpad matematik och statistik; Applied Mathematics and Statistics;

   Abstract : In this Ph.D. thesis, we investigate how to optimize the design of clinical trials by constructing optimal adaptive designs, and how to implement the design by adaptive randomization. READ MORE

4. 2. Social Ecography : International trade, network analysis, and an Emmanuelian conceptualization of ecological unequal exchange

   Author : Carl Nordlund; Humanekologi; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ecological unequal exchange; commodity trade; ecological economics; world-system analysis; network analysis; human ecology; ecography;

   Abstract : This thesis demonstrates how network analysis, ecological economics and the world-system perspective can be combined into an ecographic framework that can yield new insights into the underlying structure of the world-economy as well as its surrounding world-ecology. In particular, the thesis focuses on the structural theory of ecological unequal exchange, a theory suggesting a relationship between positionality within the world-system and unequal exchange of biophysical resources. READ MORE

5. 3. Unequal Valuations of Lives and What to Do About It : The Role of Identifiability, Numbers, and Age in Charitable Giving

   Author : Hajdi Moche; Daniel Västfjäll; Arvid Erlandsson; Erkin Asutay; Annika Wallin; Linköpings universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Charitable giving; Donation decision; Identifiable victim effect; Singularity effect; Age effect; Compassion fade; Scope-insensitivity; Intervention; Deliberation; Unit asking method; Välgörenhetsgivande; Donationsbeslut; Identifierbarhetseffekt; Singularitetseffekt; Ålderseffekt; Intervention;

   Abstract : Many people choose to donate money to help victims of humanitarian crises. However, people’s donation decisions often fail to reflect that all victims are equally valuable to help. Instead, some victims seem to be favored. READ MORE

6. 4. Optimal Subsampling Designs Under Measurement Constraints

   Author : Henrik Imberg; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; inverse probability weighting; unequal probability sampling; optimal design; active sampling; M-estimation;

   Abstract : We consider the problem of optimal subsample selection in an experiment setting where observing, or utilising, the full dataset for statistical analysis is practically unfeasible. This may be due to, e.g., computational, economic, or even ethical cost-constraints. READ MORE

7. 5. Worth weighting for : studies on benchmark dose analysis in relation to animal ethics in toxicity testing

   Author : Joakim Ringblom; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : A purpose of chemical health risk assessment is to characterize the nature and size of the health risk associated with exposure to chemicals, including identification of a dose below which toxic effects are not expected or negligible. This is usually based on analysis of dose-response data from toxicity studies on animals. READ MORE