Personalized context-oriented support for interactions between production networks members

An approach to information support for interactions between production networks members is proposed based on the use of a context-oriented knowledge management system. The use of context makes it possible to provide the production network members with currently relevant knowledge. Managing the profiles of members and users enables the personalization of information support for members in the knowledge management system and allows using them as sources of knowledge.     

Open access to scientific knowledge. Who receives dividends?

Open access to scientific knowledge is considered as a new neo-liberal project in the globalized world. The advantages and disadvantages that members of the open access obtain are described. Open access greatly facilitates monitoring, analysis, and control of scientific research by global institutions and transnational corporations, and enables them to identify promising branches of knowledge on the periphery of the global science system that are obtained outside of the “mainstream” and use them for their interests. The link between open access to scientific knowledge and knowledge feudalism is developed.     

Temporal Trends of Malondialdehyde in Stored Human Plasma

Malondialdehyde (MDA) is widely used as oxidative stress biomarker in biomedical research. Plasma is stored in deep freezers generally till analysis. Effect of such storage on MDA values, which may be variable and prolong, was incidentally observed in the ongoing study which is to estimate oxidative stress with oral iron. Plasma from blood samples of pregnant women (20–30 years age) in third trimester of singleton pregnancy (n = 139), consuming oral iron tablets was stored at −20 °C with intention of MDA estimation, as soon as possible. However logistic problems led this storage for prolonged and variable period (1–708 days). When values of MDA estimated using “Ohkawa” 79 method and readings were plotted against time to check the temporal effect, it showed a hyperbolic curve. Standard deviation (SD) was lowest when samples were tested within 3 weeks time. The samples analyzed within 3 weeks had mean ± SD value of 31.59 ± 26.11 μmol/L, while 123.7 ± 93.97 and 366.5 ± 189.8 μmol/L for samples stored for 1–3 and 4 months to 1 year respectively. Mean ± SD were 539.9 ± 196.8 in the samples store for more than a year. Rate of change in values was also lowest (0.0433 μmol/L/day) in the samples tested within first 3 weeks, which rose to 1.2 μmol/L/day during 3 month’s storage. This rate peaked at storage of 120 days (1.87 μmol/L/day) and fell to 0.502 μmol/L/day in the second year of storage. It is concluded that at −20 °C, only 3 weeks of storage time should be considered valid for fairly acceptable stability in MDA values.     

Pre-service primary teachers’ conceptions of creativity in mathematics

Teachers in the UK and elsewhere are now expected to foster creativity in young children (NACCCE, 1999; Ofsted, 2003; DfES, 2003; DfES/DCMS, 2006). Creativity, however, is more often associated with the arts than with mathematics. The aim of the study was to explore and document pre-service (in the UK, pre-service teachers are referred to as ‘trainee’ teachers) primary teachers’ conceptions of creativity in mathematics teaching in the UK. A questionnaire probed their conceptions early in their course, and these were supplemented with data from semi-structured interviews. Analysis of the responses indicated that pre-service teachers’ conceptions were narrow, predominantly associated with the use of resources and technology and bound up with the idea of ‘teaching creatively’ rather than ‘teaching for creativity’. Conceptions became less narrow as pre-service teachers were preparing to enter schools as newly qualified, but they still had difficulty in identifying ways of encouraging and assessing creativity in the classroom. This difficulty suggests that conceptions of creativity need to be addressed and developed directly during pre-service education if teachers are to meet the expectations of government as set out in the above documents.     

Estimating the Effects of Students’ Social Networks: Does Attending a Norm-Enforcing School Pay Off?

In an attempt to forge tighter social relations, small school reformers advocate school designs intended to create smaller, more trusting, and more collaborative settings. These efforts to enhance students’ social capital in the form of social closure are ultimately tied to improving academic outcomes. Using data derived from ELS: 2002, this study employs propensity scores in the context of multilevel models to estimate the effects of a specific school-level variant of social closure, referred to as a norm-enforcing school, on students’ mathematics achievement. Results estimate that attending a norm-enforcing school has no effect on 12th-grade mathematics achievement. This result questions the presumed benefits of social capital and its emphasis on norm-enforcement and social control. Policy implications are discussed in light of contemporary urban school reform initiatives that focus on reductions in school size.