Justus Ogembo, Associate Professor of Education, travels to Italy

On March 11, 2015, I travelled to Verona, Italy, to present a paper at a conference held at the University of Verona and participate in a subsequent two-day workshop. This event, sponsored by National Science Foundation (NSF), and organized by Professors Giovanni Bennardo of Northern Illinois University and Anna Paini of the University of Verona, brought together scholars from across the world who had conducted fieldwork in diverse communities around the world on `Cultural Models of Nature’ during the summer of 2014 with a grant from the NSF; hence, the theme of the event, “Local Knowledge: Fieldwork Experience.” The event lasted from 12th to 15th March. I returned on March 16th. My air ticket to and from this venue was made possible by generous support from the Center for International Education, Department of Anthropology, and Department of Education. I am eternally grateful

Not guilty? Another look at the nature and nurture of economics students

Economists praise the efficiency of the price mechanism in allocating scarce resources. Others, however, often reject it as unfair. In this study, we investigate the extent to which economists also differ from non-economists in how they value the fairness of the price system, and examine how deeply such differences are rooted in their course of studies. The result: studying economics does in fact influence how they arrive at value judgements, though students' attitudes do not stem solely from this factor - their views already differ from those of non-economics students right at the beginning of their studies. --Economists,fairness,learning,selection,attitudes

Hinduism and ecology: Its relevance and importance

The sustenance of the environment is one of the cardinal teachings of the Hindus tradition and, in this regard, the Hindus tradition points out clearly that a good environment is indispensable for a healthy life. This work seeks to explore some of the fundamental teachings of Hinduism that point to the implications of the relationship between human beings and their environment. For instance, the dharma ecology explains the mechanism for creating respect for nature and the consequences of not doing so. Essentially, this relationship and its corresponding consequence functions in line with the Karmic law of nature. The essence of this paper is to create awareness on the impending disaster that may result from the abuse of the eco-system such as the extinction of the earth’s plants and animal species that may result from the current destruction of forests and coral reefs, and the depletion of the earth’s ozone layer, which will expose life to excessive ultraviolet radiation that is damaging to genetic materials. This work used the qualitative method of research involving secondary method of data collection such as written literature, internet materials, among others. Interestingly, education and sensitization through networking and advertising can be used in enhancing the knowledge on how to relate favourably with the eco-system

Economic principles of state aid control

This paper summarizes the economic principles of European state aid control. We start with a discussion of the economic justification for state aid control, including the definition of state aid in European law and exceptions to the general ban of state aid. We then explore the motives for granting state aid, ranging from the correction of market failures over political motives to political economy considerations. We then discuss how state aid control fits into the framework of European competition policy before we comment extensively on the more economic approach to state aid control, as implemented by the European Commission, and the state aid action plan. --

Kinetic Modeling and Numerical Simulation as Tools to Scale Microalgae Cell Membrane Permeabilization by Means of Pulsed Electric Fields (PEF) From Lab to Pilot Plants

Pulsed Electric Fields (PEF) is a promising technology for the gentle and energy efficient disruption of microalgae cells such as Chlorella vulgaris. The technology is based on the exposure of cells to a high voltage electric field, which causes the permeabilization of the cell membrane. Due to the dependency of the effective treatment conditions on the specific design of the treatment chamber, it is difficult to compare data obtained in different chambers or at different scales, e.g., lab or pilot scale. This problem can be overcome by the help of numerical simulation since it enables the accessibility to the local treatment conditions (electric field strength, temperature, flow field) inside a treatment chamber. To date, no kinetic models for the cell membrane permeabilization of microalgae are available what makes it difficult to decide if and in what extent local treatment conditions have an impact on the permeabilization. Therefore, a kinetic model for the perforation of microalgae cells of the species Chlorella vulgaris was developed in the present work. The model describes the fraction of perforated cells as a function of the electric field strength, the temperature and the treatment time by using data which were obtained in a milliliter scale batchwise treatment chamber. Thereafter, the model was implemented in a CFD simulation of a pilot-scale continuous treatment chamber with colinear electrode arrangement. The numerical results were compared to experimental measurements of cell permeabilization in a similar continuous treatment chamber. The predicted values and the experimental data agree reasonably well what demonstrates the validity of the proposed model. Therefore, it can be applied to any possible treatment chamber geometry and can be used as a tool for scaling cell permeabilization of microalgae by means of PEF from lab to pilot scale. The present work provides the first contribution showing the applicability of kinetic modeling and numerical simulation for designing PEF processes for the purpose of biorefining microalgae biomass. This can help to develop new processes and to reduce the costs for the development of new treatment chamber designs.DFG, 414044773, Open Access Publizieren 2019 - 2020 / Technische Universität Berli

Unionisation Structures and Innovation Incentives

This paper examines how different unionisation structures affect firms' innovation incentives and industry employment. We distinguish three modes of unionisation with increasing degree of centralisation: (1) "Decentralisation" where wages are determined independently at the firm-level, (2) "coordination" where one industry union sets individual wages for all firms, and (3) "centralisation" where an industry union sets a uniform wage rate for all firms. While firms' investment incentives are largest under "centralisation" investment incentives are non-monotone in the degree of centralisation: "Decentralisation" carries higher investment incentives than "coordination". Labour market policy can spur innovation by decentralising unionisation structures or through non-discrimination rules.

Unionization Structures and Firms' Incentives for Productivity Enhancing Investments

This paper examines how unionization structures that differ in the degree of wage centralization affect firms' incentives to increase labor productivity. We distinguish three modes of unionization with increasing degree of centralization: (1) "Decentralization" where wages are determined independently at the firm-level, (2) "coordination" where an industry union sets individual wages for all firms at the firmlevel, and (3) "centralization" where a uniform wage rate is set for the entire industry. We show that firms' investment incentives are largest under complete centralization. However, investment incentives are non-monotone in the degree of centralization so that "decentralization" carries higher investment incentives than "coordination." Depending on the innovation outcome, workers' wage bill is maximized under "centralization" if firms' productivity differences remain small. Otherwise, workers prefer an intermediate degree of centralization, which holds innovative activity down at its lowest level. Labor market policy can spur innovation by either decentralizing unionization structures or by imposing non-discrimination rules on monopoly unions. ZUSAMMENFASSUNG - (Gewerkschaftssysteme und die Anreize der Unternehmen zur Produktivitätssteigerung) Diese Arbeit untersucht den Einfluß unterschiedlicher Gewerkschaftssysteme auf die Anreize von Unternehmen, ihre Arbeitsproduktivität zu erhöhen. Wir unterscheiden zwischen drei Gewerkschaftsstrukturen mit zunehmendem Zentralisierungsgrad: 1.) "Dezentrale Lohnsetzung", bei der Löhne ohne zentrale Koordination auf Unternehmensebene bestimmt werden, 2.) "koordinierte Lohnsetzung", bei der eine Industriegewerkschaft die Lohnforderungen gegenüber einzelnen Arbeitgebern koordiniert und 3.) "zentralisierte Lohnsetzung", bei der ein einheitlicher Lohnsatz für die gesamte Industrie bestimmt wird. Wir zeigen, daß die Investitionsanreize der Unternehmen bei "zentralisierter Lohnsetzung" am stärksten sind. Die Investitionsanreize sind allerdings nicht monoton im Zentralisierungsgrad: "Dezentralisierte Lohnsetzung" führt zu stärkeren Investitionsanreizen als "koordinierte Lohnsetzung". Die Lohnsumme ist in einem zentralisierten Gewerkschaftssystem maximal, solange die Innovationen hinreichend "klein" sind, so daß die Unterschiede in der Produktivität zwischen den Unternehmen gering bleiben. Bei "großen" Innovationen bevorzugen Arbeitnehmer hingegen eine "koordinierte Lohnsetzung", wodurch die Innovationstätigkeit der Unternehmen auf ihr niedrigstes Niveau gedrückt wird. Arbeitsmarktpolitik kann die Innovationsanreize entweder durch eine Dezentralisierung der Lohnsetzung oder durch Diskriminierungsverbote für Monopolgewerkschaften erhöhen.Unions, Oligopoly, Innovation, Productivity, Wage-Setting Centralization, Labor Market Flexibility