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In this paper, we consider a robust combinatorial optimization problem with uncertain weights and propose an uncertainty set that generalizes interval uncertainty by imposing lower and upper bounds on deviations of subsets of items. We prove that if the number of such subsets is fixed and the family of these subsets is laminar, then the robust combinatorial optimization problem can be solved by solving a fixed number of nominal problems. This result generalizes a previous similar result for the case where the family of these subsets is a partition of the set of items.

This work would like to bring into the attention of readers various aspects associated with the process of doctoral research. For many of the students this can represent quite a challenging experience with an increased level of complexity. The author will show his experience while enrolled in this form of education. Main ideas are based on the factors identified while planning and writing the papers associated with the research journey. Most of the works belong to the themes of the doctoral school, like economics, financial system or international affairs. The sample of analysed papers contains several works covering the field of interdisciplinary research. This concept will be approached inside the literature review to familiarise the readers with its meaning. Content of this area includes elements from economics, financial system, international affairs and environment. Novelty of the paper is represented by the personal experience of the writer. He will show the challenges encountered while performing regular and interdisciplinary research, connecting particular notions from business process management and business process improvement. Lean Six Sigma methodology will be used to sustain specific elements of the analytical representation. Moreover, the author will provide an overview on the lessons learnt, hoping this will contribute to the decrease of the research process complexity level and support publication status. [ABSTRACT FROM AUTHOR]

The study sought to examine the complexities involved in the implementation of public–private partnerships in the transport sector using the experience of Intercity STC Coaches Limited and private partners in Ghana. The study seeks to contribute to the literature on public–private partnership by examining the implementation challenges associated with the partnership between a public and private transport entities. An exploratory qualitative design through semi-structured interviews and document reviews is adopted for the study. The paper uses the complexity of joint action as the theoretical framework. The study contends that the presence of a challenge, the threat of a challenge or the quest to realize an untapped opportunity offers the basis for a PPP to kick-start. Despite the ideals, there are challenges which impede the effective operationalization of partnerships. These are discussed with clear policy suggestions to address them. [ABSTRACT FROM AUTHOR]

This paper emerged from a workshop presented at the ANZTSR conference in Sydney 2016, and from a series of workshops leading to that conference. The purpose of the paper is to adopt a transdisciplinary perspective, and so encourage a broader discussion of where the third sector fits within current political and economic trends, and within the even broader environmental crisis in which we find ourselves, often identified as the Anthropocene,'the Age of Humans'. [ABSTRACT FROM AUTHOR]