Foreword     

S.R. Ponelis  J.J. Britz 《International Information and Library Review》2013,45(4):219-225

With the development of new information and communication technologies, the right to communicate assumes new dimensions, since it is almost impossible to fully participate in the globalized world without access to modern information and communication technologies. South Africa held its first democratic elections in 1994 and has subsequently returned to the international arena. Its citizens should rightly expect to be able to participate in all that this return offers, not only politically, but also economically and socially. Telecommunications are vital to making such participation possible. In recognition of this fact, the newly elected government developed policies and enacted legislation to ensure that the telecommunications sector, and specifically the sole fixed line service provider Telkom, provides South African citizens affordable access to the telecommunications infrastructure whilst providing acceptable levels of service. However, rather than meeting its obligation to the government and the people of South Africa, Telkom has misused its monopoly. The social injustice that this situation creates is critically examined against the background of the right to communicate based on Rawls' principles of social justice and Sen's capability approach.  相似文献   

Arousing News Characteristics in Dutch Television News 1990–2004: An Exploration of Competitive Strategies     

Paul Hendriks Vettehen  Johannes Beentjes  Koos Nuijten  Allerd Peeters 《Mass Communication and Society》2013,16(1):93-112

This study investigates the processes by which competition in the television news market might promote the presence of arousing characteristics in television news. A total of 3,024 news stories from six Dutch television news programs over the period 1990 to 2004 were investigated through content analysis. The findings of the study show overall increases in all 6 arousing characteristics. The findings also show that commercial newcomers included more arousing characteristics in their news stories than the public service broadcasters, that commercial newcomers developed a news format that featured more arousing characteristics, and that existing programs reacted to newcomers by increasing the amount of arousing characteristics in their news stories.  相似文献   

A physically active lifestyle is related to a lower level of skin autofluorescence in a large population with chronic-disease (LifeLines cohort)     

Saskia Corine van de Zande  Jeroen Klaas de Vries  Inge van den Akker-Scheek  Johannes Zwerver  Andries Jan Smit 《运动与健康科学(英文)》2022,11(2):260-265

Background:Physical activity(PA)has substantial health benefits and is important in combatting chronic diseases,which have been associated with elevated levels of advanced glycation endproducts(AGEs).AGEs play a role in the aging process,and an association between PA and AGEs has been reported.We aimed to investigate the relationship between PA and AGE accumulation in a general population and in a population with chronic diseases.Methods:This large cross-sectional population study used data from adult participants in the LifeLines project,with participant information drawn from the LifeLines database as well data from patients with diabetes mellitus or renal and/or cardiovascular diseases.Tissue AGE accumulation was assessed non-invasively by skin-autofluorescence(SAF)using an AGE reader(DiagnOptics Technologies BV,Groningen,the Netherlands).PA was assessed using the short questionnaire to assess health-enhancing physical activity(SQUASH).Multivariate linear regression analyses were adjusted for age,body mass index,sex,and smoking status.Results:Data from 63,452 participants(general population n=59,177,chronic disease n=4275)were analyzed.The general population was significantly younger(43.58±11.77 years,mean±SD)and had significantly lower SAF(1.90±0.42 arbitrary units(AU))compared to the population with chronic disease(age:55.51±12.07 years;SAF:2.27±0.51 AU).In the group with chronic disease,more hours of moderate to vigorous physical activities per week were associated with lower SAF(β=-0.002,95%confidence interval(95%CI):-0.002 to-0.001).For the general population,there was no association between hours of moderate to vigorous activity and SAF(β=3.2×10^-5,95%CI:0.000-0.001,p=0.742).However,there was an association in the general population between total hours of PA per week and SAF(β=4.2×10^-4,95%CI:0.000-0.001,p<0.001),but this association was not found in the chronic disease population(β=-3.2×10^-4,95%CI:-0.001 to 0.000,p=0.347).Conclusion:Our study demonstrates that an inverse relationship exists between PA and AGE accumulation in the population with chronic disease.More hours of moderate to vigorous activity is associated a significantly decreased SAF.More PA is associated a lower SAF,even after for the established predictors(age,body mass index,smoking status,and sex).Our findings could help to promote health and prolong longevity.  相似文献   

Early numeracy in low‐performing young children     

Pirjo Aunio  Jarkko Hautamäki  Nina Sajaniemi  Johannes E. H. Van Luit 《British Educational Research Journal》2009,35(1):25-46

The aim of this study was to explore the early numeracy of low‐performing young children. The mean age of the children was six years and four months. The 511 participants belonged to three groups: multi‐language children, children with special educational needs and children with average performance. The results showed that there were significant group differences in early numeracy: the children in the reference group had better relational and counting skills than those with a multi‐language background and those with special educational needs. Some differences were found in counting skills between the children with multi‐language background and those with special educational needs. Finally, (special) educational support for low‐performing children is discussed.  相似文献   

An undergraduate course to bridge the gap between textbooks and scientific research     

Wiegant F  Scager K  Boonstra J 《CBE life sciences education》2011,10(1):83-94

This article reports on a one-semester Advanced Cell Biology course that endeavors to bridge the gap between gaining basic textbook knowledge about cell biology and learning to think and work as a researcher. The key elements of this course are 1) learning to work with primary articles in order to get acquainted with the field of choice, to learn scientific reasoning, and to identify gaps in our current knowledge that represent opportunities for further research; 2) formulating a research project with fellow students; 3) gaining thorough knowledge of relevant methodology and technologies used within the field of cell biology; 4) developing cooperation and leadership skills; and 5) presenting and defending research projects before a jury of experts. The course activities were student centered and focused on designing a genuine research program. Our 5-yr experience with this course demonstrates that 1) undergraduate students are capable of delivering high-quality research designs that meet professional standards, and 2) the authenticity of the learning environment in this course strongly engages students to become self-directed and critical thinkers. We hope to provide colleagues with an example of a course that encourages and stimulates students to develop essential research thinking skills.  相似文献   

Die moralischen Rechte von Kindern     

Johannes Giesinger 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2007,53(1):73-91

THE MORAL RIGHTS OF CHILDREN – Most people today believe that children should be accorded legal or moral rights. In the course of the past few decades, however, objections to this view have been repeatedly raised. According to one objection, it is inappropriate for children to be the bearers of rights. Another group of objectors say that children’s interests are not being served if rights are allocated to them. This paper acknowledges that rights alone are not enough to protect children’s basic needs and interests in full. It is therefore inappropriate to resort to exclusively rights-based language when referring to the relationship between parents and children. Nevertheless, as this paper argues, it is advisable to provide children with moral rights. In response to the initial objection, a concept of rights is put forward which enables children, like adults, to be considered as the bearers of rights.

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Zusammenfassung Es ist heute selbstverst?ndlich, Kindern legale oder moralische Rechte zuzuschreiben. Gegen den breit abgestützten Konsens in dieser Frage sind in den vergangenen Jahrzehnten jedoch immer wieder Einw?nde laut geworden. Nach einem ersten Einwand sind Kinder als Tr?ger von Rechten ungeeignet. Eine zweite Gruppe von Einw?nden besagt, dass den Belangen von Kindern nicht gedient ist, wenn ihnen Rechte zugeschrieben werden. In diesem Aufsatz wird einger?umt, dass durch Rechte nicht alle grundlegenden Bedürfnisse oder Interessen von Kindern geschützt werden k?nnen. Es ist deshalb unangemessen, in Bezug auf die Eltern-Kind-Beziehung ausschlie?lich die Sprache der Rechte zu verwenden. Trotzdem, so die hier vertretene These, ist es sinnvoll, Kinder mit moralischen Rechten auszustatten. Als Reaktion auf den ersten Einwand wird ein Verst?ndnis von Rechten vorgeschlagen, das es erlaubt, auch Kinder als Tr?ger von Rechten zu sehen.

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Resumen LOS DERECHOS MORALES DE LOS NI?OS – Hoy en día, el reconocimiento de los derechos legales o morales de los ni?os es algo sobreentendido. Sin embargo, y contrariamente al consenso general que los apoya, siempre se han vuelto a plantear cuestionamientos en cuanto a esta temática durante los últimos decenios. Hay quienes argumentan que los ni?os no son adecuados como sujetos de derecho, y un segundo grupo de objetores opinan que el hecho de reconocer derechos para los ni?os no sirve a los intereses infantiles. En este trabajo se admite que los derechos no pueden proteger la totalidad de los intereses o necesidades de los ni?os, y que por eso es inadecuado utilizar solamente el lenguaje de derecho con respecto a las relaciones paterno-filiales. No obstante, según la tesis de este trabajo, es razonable que a los ni?os se les confieran derechos morales. Como reacción a la primera objeción, se propone un concepto de derecho que permita reconocer también a los ni?os como sujetos de derecho.

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Résumé LES DROITS MORAUX DES ENFANTS – La plupart des gens croient aujourd’hui que l’on devrait accorder des droits légaux ou moraux aux enfants. Au cours des dernières décennies, cependant, il y eut plusieurs objections formulées à cette vision des choses. Selon une objection, il ne convient pas que les enfants soient les sujets des droits. Un autre groupe d’objecteurs dit que les intérêts des enfants ne sont pas servis si on leur assigne des droits. Cet article reconna?t que les droits ne suffisent pas pour protéger complètement les besoins et les intérêts fondamentaux des enfants. Il est donc impropre de recourir au language exclusivement légal pour en référer au rapport entre les parents et les enfants. Néanmoins, ainsi que cet article le soutient, il est recommandé de fournir aux enfants des droits moraux. En réponse à l’objection initiale, on propose un concept de droits permettant aux enfants d’être considérés comme sujets des droits, comme des adultes.

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Der Autor Johannes Giesinger, Dr. phil., geboren 1972, Studium der Philosophie und P?dagogik an der Universit?t Zürich. T?tigkeit als Gymnasiallehrer für Philosophie. Promotion (2005) mit einer Arbeit zur Frage des p?dagogischen Paternalismus. Publikationst?tigkeit in den Bereichen Philosophiedidaktik und Bildungsphilosophie. Adresse: St.Georgenstrasse 181a, CH-9011 St. Gallen. E-mail: giesinger@st.gallen.ch  相似文献   

4. Ingrid Lohmann/Rainer Rilling (Hrsg.): Die verkaufte Bildung. Kritik und Kontroversen zur Kommerzialisierung von Schule, Weiterbildung. Erziehung und Wissenschaftst     

Johannes Bellmann 《Zeitschrift für Erziehungswissenschaft》2002,5(2):350-353

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The significance of discrepancies between the verbal and non-verbal intelligence scores of a group of first year university students     

Johannes A. Le Roux  Roelof P. Van Der Merwe 《International journal for the advancement of counseling》1985,8(3):249-260

The object of the study was to investigate the significance of the differences between verbal and non-verbal scores on the New South African Group Intelligence Test (NSAGT).The experimental subjects were first year university students. They were subdivided into three groups: one group whose non-verbal scores were higher than their verbal scores, a second group whose verbal scores were higher than their nonverbal scores and a third group, acting as a control group, whose verbal and nonverbal scores were approximately equal.The three groups were compared with regard to such features as visual and auditory acuity, personal adjustment and academic achievement. The raw data were arranged in three-dimensional contingency tables and interrelationships between variables were computed by means of the G² test.A positive correlation was found between temperamental personality features and high non-verbal scores on the NSAGT.This article is based on the MA dissertation of the second author under the supervision of the first author. The study was partly sponsored by a grant from the Human Sciences Research Council. Republic of South Africa, to which body grateful acknowledgement is made. However, the opinions expressed and the conclusions drawn are the absolute responsibility of the authors  相似文献   

Coplanar electrowetting-induced stirring as a tool to manipulate biological samples in lubricated digital microfluidics. Impact of ambient phase on drop internal flow pattern     

Laurent Davoust  Yves Fouillet  Rachid Malk  Johannes Theisen 《Biomicrofluidics》2013,7(4)

Oscillating electrowetting on dielectrics (EWOD) with coplanar electrodes is investigated in this paper as a way to provide efficient stirring within a drop with biological content. A supporting model inspired from Ko et al. [Appl. Phys. Lett. 94, 194102 (2009)] is proposed allowing to interpret oscillating EWOD-induced drop internal flow as the result of a current streaming along the drop surface deformed by capillary waves. Current streaming behaves essentially as a surface flow generator and the momentum it sustains within the (viscous) drop is even more significant as the surface to volume ratio is small. With the circular electrode pair considered in this paper, oscillating EWOD sustains toroidal vortical flows when the experiments are conducted with aqueous drops in air as ambient phase. But when oil is used as ambient phase, it is demonstrated that the presence of an electrode gap is responsible for a change in drop shape: a pinch-off at the electrode gap yields a peanut-shaped drop and a symmetry break-up of the EWOD-induced flow pattern. Viscosity of oil is also responsible for promoting an efficient damping of the capillary waves which populate the surface of the actuated drop. As a result, the capillary network switches from one standing wave to two superimposed traveling waves of different mechanical energy, provided that actuation frequency is large enough, for instance, as large as the one commonly used in electrowetting applications (f ∼ 500 Hz and beyond). Special emphasis is put on stirring of biological samples. As a typical application, it is demonstrated how beads or cell clusters can be focused under flow either at mid-height of the drop or near the wetting plane, depending on how the nature of the capillary waves is (standing or traveling), and therefore, depending on the actuation frequency (150 Hz–1 KHz).  相似文献   

Creatine kinase,myosin heavy chains and magnetic resonance imaging after eccentric exercise     

Stephan Sorichter  Johannes Mair  Arnold Koller  Erich Muller  Christian Kremser  Werner Judmaier 《Journal of sports sciences》2013,31(9):687-691

The aim of this study was to examine the relationship between myosin heavy chain (MHC) release as a specific marker of slow-twitch muscle fibre breakdown and magnetic resonance imaging (MRI) of skeletal muscle injury after eccentric exercise. The effects of a single series of 70 high-intensity eccentric contractions of the quadriceps femoris muscle group (single leg) on plasma concentrations of creatine kinase and MHC fragments were assessed in 10 young male sport education trainees before and 1 and 4 days after exercise. To visualize muscle injury, MRI of the loaded thigh was performed before and 4 days after the eccentric exercise. All participants recorded an increase ( P ? 0.05) in creatine kinase after exercise. In five participants, T2 signal intensity was unchanged post-exercise compared with pre-exercise and MHC plasma concentration was normal; however, they showed an increase ( P ? 0.05) in creatine kinase after exercise. For the remaining five participants, there was an increase in T2 signal intensity of the loaded vastus intermedius and vastus lateralis. These changes in MRI were accompanied by an increase in MHC plasma concentration ( P ? 0.01) as well as an increase in creatine kinase ( P ? 0.01). We suggest that changes in MRI T2 signal intensity after muscle damage induced by eccentric exercise are closely related to damage to structurally bound contractile filaments of some muscle fibres. Additionally, MHC plasma release indicates that this damage affects not only fast-twitch fibres but also some slow-twitch fibres.  相似文献