A resourcification manifesto: Understanding the social process of resources becoming resources

In times of major global interconnectedness and environmental change, the pressure to identify, create, and exploit new resources is certain to intensify. Given that there are unavoidable trade-offs, conflicts, and arenas for violence involved when increasingly more material and immaterial things are turned into resources, we call for explicit research on the very process – a process that we label resourcification. The concept of resourcification shifts attention from essentialist queries about the nature of resources to a focus on the social processes through which things are turned into resources. In search of a better understanding of resources in the Anthropocene and, in particular, an understanding about the way resources emerge and are used, resourcification offers a new conceptual framework that allows for a systematic search for knowledge about the diversity of contexts, conditions, modes, and temporalities of resourcification. This Resourcification Manifesto offers a theoretical and empirical framework for a radical and disruptive approach to innovation, sustainability, and management studies and policies.     

Microfluidic electrical sorting of particles based on shape in a spiral microchannel

Shape is an intrinsic marker of cell cycle, an important factor for identifying a bioparticle, and also a useful indicator of cell state for disease diagnostics. Therefore, shape can be a specific marker in label-free particle and cell separation for various chemical and biological applications. We demonstrate in this work a continuous-flow electrical sorting of spherical and peanut-shaped particles of similar volumes in an asymmetric double-spiral microchannel. It exploits curvature-induced dielectrophoresis to focus particles to a tight stream in the first spiral without any sheath flow and subsequently displace them to shape-dependent flow paths in the second spiral without any external force. We also develop a numerical model to simulate and understand this shape-based particle sorting in spiral microchannels. The predicted particle trajectories agree qualitatively with the experimental observation.     

A Comparative Study of Clinical Utility of Spot Urine Samples with 24-h Urine Albumin Excretion for Screening of Microalbuminuria in Type 2 Diabetic Patients

Twenty-four hour urinary albumin excretion (UAE) is considered as gold standard method for albuminuria measurement, but collection of 24-h urine is inconvenient. The aim of present study was to evaluate whether albumin: creatinine ratio (ACR) and urinary albumin concentration (UAC) in different spot urine samples correlate or not with 24-h UAE for screening of microalbuminuria in type 2 diabetic patients. We collected first morning void (FMV), random urine sample (RUS) and 24-h urine, separately on consecutive days from 104 type 2 diabetic patients. ACR and UAC in each spot urine sample compared with 24-h UAE with regard to Pearson correlation coefficient. Pearson’s correlation of albumin: creatinine ratio (ACR) with 24-h UAE was (r = 0.802 and 0.623) in first morning void (FMV) and random urine sample (RUS), respectively. Pearson’s correlation coefficient of urinary albumin concentration (UAC) compared with 24-h UAE was (r = 0.943 and 0.920), in FMV and RUS, respectively, P < 0.01. Results revealed that values in first morning void (FMV) were better correlated with 24-h urinary albumin excretion (UAE), than the values in random urine sample (RUS). We conclude that the first morning void (FMV) may be able to replace 24-h urine collection, preferably urinary albumin concentration (UAC) in the initial screening of microalbuminuria in diabetic patients.     

Diabetic cardiomyopathy and reactive oxygen species (ROS) related parameters in male and female rats: A comparative study

Studies were carried out to examine and compare the effects of alloxan-diabetes on reactive oxygen species (ROS) related parameters in the heart from male and female rats. Effects of insulin treatment were also evaluated. The diabetic state severely compromised the ROS defense mechanism in the cardiac tissue and the effects were more pronounced in the female than in the male rats. There was several fold increase in the xanthine oxidase (XO) activity in general and the magnitude of increase was higher in the females; insulin treatment resulted in further increase in the XO activity. The glucose-6-phosphate dehydrogenase (G6PDH) and catalase activities decreased and the reduced glutathione (GSH) content in mitochondria was completely depleted in diabetic state with significant decrease in the GSH levels in the post-mitochondrial fraction; the effect was more pronounced in the females. The superoxide dismutase (SOD) and glutathione peroxidase (GPox) activities increased in the diabetic state to a greater extent in male rats. Insulin treatment had restorative action only on some parameters. In conclusion, our results suggest that diabetic state may further compromise the weak ROS defense systems in the heart thus initiating a lesion at the level of mitochondria which ultimately leads to cardiomyopathy and the effects are especially more pronounced in the females. Our results also pointed out that insulin treatment was ineffective in restoring ROS related parameters.     

Inventors and invention processes in Europe: Results from the PatVal-EU survey

Based on a survey of the inventors of 9017 European patented inventions, this paper provides new information about the characteristics of European inventors, the sources of their knowledge, the importance of formal and informal collaborations, the motivations to invent, and the actual use and economic value of the patents.     

An algorithm for Eigenvalue assignment in multi-input systems

This paper describes a computational method for solving the problem of eigenvalue assignment in a multi-input linear system. The given system is first reduced to an upper block Hessenberg form by means of orthogonal state coordinate transformations. It is then shown how a sequence of state feedback matrices and orthogonal state coordinate transformations can be applied to obtain a block triangular structure for the resulting state matrix, where the matrices on the diagonal are square matrices in upper Hessenberg form and of dimensions equal to the controllability indices of the multi-input system. Furthermore, the structure of the corresponding input matrix is such that the problem of eigenvalue assignment in the multi-input system can be reduced to several single-input eigenvalue assignment problems where the dimensions of the single-input systems are equal to the controllability indices of the multi-input system.     

Pedagogical renewal: Improving the quality of classroom interaction in Nigerian primary schools

This study reports on an investigation of classroom interaction and discourse practices in Nigerian primary schools. Its purpose was to identify key issues affecting patterns of teacher–pupil interaction and discourse as research suggests managing the quality of classroom interaction will play a central role in improving the quality of teaching and learning, particularly in contexts where learning resources and teacher training are limited. The study was based on the interaction and discourse analysis of video recordings of 42 lessons and 59 teacher questionnaires from 10 States, drawn mainly from the north of Nigeria. The findings revealed the prevalence of teacher explanation, recitation and rote in the classroom discourse with little attention being paid to securing pupil understanding. The wider implications of the findings for improving the quality of classroom interaction in Nigerian primary schools through more effective school-based training are considered.     

Comprehending instructions for using pharmaceutical products in rural Kenya

This paper reports two studies on comprehension of pharmaceutical texta containing pictorial and written instructions by mothers in rural Kenya. The subjects were asked to read and recall instructions for preparing and administering a solution for the treatment of dehydration due to diarrheal disease in children. A set of pictures describing the preparation procedure, together with written text instructions under two conditions, (a) original, as in the commercial product, and (b) revised, to include familiar terminology and explanations of some procedures, were presented to two groups of Kenyan mothers. The verbal protocols generated were transcribed and analyzed using propositional representation of instructional procedures.The results showed that mothers recalled the procedures for the preparation as in the pictures but not those presented in the written instructions. The written instructions were generally found to be difficult, with the original text being more difficult than the revised text. Any conflicting information between the written and pictorial instructions was resolved by selecting the familiar procedure. The information recalled from the revised text that was recalled was that which supported the procedures in the pictures. The results have implications for writing adequate pharmaceutical texts for users such that little room is left for misinterpretation.     

Job satisfaction of Jamaican elementary school teachers

This study investigated correlates of job satisfaction among public (N=190) and private (N=100) Jamaican elementary school teachers. Emphasis was on the identification of factors that could be affected through administrative intervention. Results indicated that the quality of school working conditions and respondents' relationships with other teachers were significantly related to satisfaction for both public and private school teachers. School prestige and parental encouragement were also significant predictors for public school teachers; leadership style, organizational structure, and teacher-parent relationships predicted job satisfaction for private school teachers. Implications of these findings for Jamaican education are discussed.

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Zusammenfassung Diese Studie untersuchte Gründe für Zufriedenheit im Beruf unter Lehrern an öffentlichen (N=190) und privaten (N=100) Schulen in Jamaica. Besonderer Wert wurde auf die Herausarbeitung von Faktoren gelegt, die durch das Einwirken des Verwaltungsapparates beeinflußt werden könnten. Die Ergebnisse wiesen darauf hin, daß die Qualität der Arbeitsbedingungen in der Schule und die Beziehungen zu anderen Lehrern sowohl bei den Lehrern an öffentlichen als auch bei den Lehrkräften an privaten Schulen in besonderem Maße auf die Zufriedenheit im Beruf einwirkten. Für Lehrer im öffentlichen Bereich waren zudem Prestige der Schule und elterliche Anerkennung von großer Wichtigkeit; bei Lehrern im Privatschulbereich lassen Führungsstil, organisatorische Struktur und Lehrer-Eltern Beziehung Zufriedenheit im Beruf erwarten. Die Auswirkungen dieser Ergebnisse auf das Erziehungswesen in Jamaika werden betrachtet.

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Résumé Cette étude présente une comparaison de la satisfaction professionnelle des enseignants des écoles élémentaires publiques (N=190) et privées (N=100) à la Jamaque. L'accent a été mis sur la détermination des facteurs qui peuvent être touchés par une intervention administrative. Les résultats obtenus ont indiqué que la qualité des conditions de travail à l'école et les rapports des personnes interrogées avec les autres enseignants dépendaient en grande partie de la satisfaction des enseignants des écoles publiques et privées. Le prestige de l'école et le soutien des parents étaient également jugés comme des indices importants pour les enseignants des écoles publiques; le mode de direction, la structure organisationnelle, les relations entre enseignants et parents accusaient la satisfaction professionnelle des enseignants du privé. On examine ensuite les implications de ces résultats pour l'enseignement jamaïcain.