Higher education in European socialist countries     

Jan Kluczyński 《Prospects》1980,10(2):196-201

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Toward relationships-querying in document retrieval systems     

Henryk Rybiński  Janusz Rolecki  Janusz Getta  Hanna Popowska 《Information processing & management》1985,21(5):419-431

A concept of end-user query language with facilities of expressing relationships between objects kept in a data base is presented. The idea of nesting these facilities in typical document system query language is shown. Special kinds of referring terms are designed. Examples of usage of the new facilities are attached.  相似文献   

The effect of progressively increased physical efforts on visual evoked potentials in volleyball players and non-athletes     

Zwierko T  Lubiński W  Lubkowska A  Niechwiej-Szwedo E  Czepita D 《Journal of sports sciences》2011,29(14):1563-1572

We assessed the effect of physical effort with increasing intensity on neural activity in the visual pathway in volleyball players (n = 10) and non-athletes (n = 10). Participants performed three 10-min tests of increasing intensity on a cycle ergometer. Each participant was assigned individual workloads below the lactate threshold (40% [Vdot]O(2max)), at the lactate threshold (65-75% [Vdot]O(2max)), and above the lactate threshold (80% [Vdot]O(2max)). Four recordings of visual evoked potentials were made: pre-exercise and immediately after each of the three subsequent tests. We assessed neural activity of the visual pathway by examining the amplitude and latency of the N75, P100, and N135 components of the visual evoked potentials waveform. Pre-exercise P100 wave latency was shorter (P < 0.05) in volleyball players than in non-athletes. In non-athletes, the latency of P100 following the first and second effort (40% and 65-75% [Vdot]O(2max)) was reduced compared with pre-exercise (P < 0.01). However, P100 latency increased and P100 amplitude decreased after the third test (80% [Vdot]O(2max)) in non-athletes. In contrast, no significant changes in the latency or amplitude of visual evoked potentials were observed in the athletes in the three tests. Neural conductivity in the visual pathway after exercise might be at least partially dependent on the individual's personal training adaptation status.  相似文献   

Microfluidic formulation of pectin microbeads for encapsulation and controlled release of nanoparticles     

Ogończyk D  Siek M  Garstecki P 《Biomicrofluidics》2011,5(1):13405

We report a method for formulation of pectin microbeads using microfluidics. The technique uses biocompatible ingredients and allows for controlled external gelation with hydrogen and calcium ions delivered from an organic phase of rapeseed oil. This method allows for encapsulation of nanoparticles into the microparticles of gel and for control of the rate of their release.  相似文献   

Insulin sensitivity and β-cell function estimated by HOMA2 model in sprint-trained athletes aged 20−90 years vs endurance runners and untrained participants     

Krzysztof Kusy  Jacek Zieliński  Łucja Pilaczyńska-Szcześniak 《Journal of sports sciences》2013,31(15):1656-1664

Abstract

There are no studies available that portray insulin sensitivity and β-cell function in ageing sprint-trained athletes. We compared male young and master sprint-trained athletes to endurance-trained and untrained individuals. We hypothesised that ageing sprint-trained athletes would preserve insulin sensitivity and β-cell function at a level similar to that of endurance-trained peers and better than in untrained individuals. We showed the associations between age and parameters derived from the updated Homeostasis Model Assessment (HOMA2 model) in 52 sprint-trained track and field athletes (aged 20?90 years), 85 endurance runners (20?80 years) and 55 untrained individuals (20?70 years). Fasting glucose, fasting insulin, insulin sensitivity and β-cell function were not associated with age in sprint-trained athletes. These variables remained relatively stable across a wide range of age and comparable to those observed in endurance-trained athletes. In contrast, the untrained group showed considerable age-related increase in fasting insulin and β-cell activity and a strong decrease in insulin sensitivity compared to both athletic groups. HOMA2 parameters were significantly related to maximal oxygen in the combined group of participants. In summary, chronic training based on a “sprint model” of physical activity, that contains mixed exercise, seems to be effective in maintaining normal insulin sensitivity with ageing.  相似文献   

Peer review: The experience and views of early career researchers          下载免费PDF全文

Blanca Rodríguez‐Bravo  David Nicholas  Eti Herman  Chérifa Boukacem‐Zeghmouri  Anthony Watkinson  Jie Xu  Abdullah Abrizah  Marzena Świgoń 《Learned Publishing》2017,30(4):269-277

This paper presents selected findings from the first year of a 3‐year longitudinal study of early career researchers (ECRs), which sought to ascertain current and changing habits in scholarly communication. Specifically, the aims of the paper are to show: (1) how much experience and knowledge ECRs had of peer review – both as authors and as reviewers; (2) what they felt the benefits were and what suggestions they had for improvement; (3) what they thought of open peer review (OPR); and (4) who they felt should organize peer review. Data were obtained from 116 science and social science ECRs, most of whom had published and were subject to in‐depth interviews conducted face‐to‐face, via Skype, or over the telephone. An extensive literature review was also conducted to provide a context and supplementary data for the findings. The main findings were that: (1) most ECRS are well informed about peer review and generally like the experience, largely because of the learning experiences obtained; (2) they like blind double‐peer review, but would like some improvements, especially with regards to reviewer quality; (3) most are uncomfortable with the idea of OPR; and (4) most would like publishers to continue organizing peer review because of their perceived independence.  相似文献   

Book reviews     

Josette Adda  Anna Sierpińska 《Educational Studies in Mathematics》1987,18(2):209-221

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HERIe: A Web-Based Decision-Supporting Tool for Assessing Risk of Physical Damage Using Various Failure Criteria     

Arkadiusz Kupczak  Mariusz Jędrychowski  Marcin Strojecki  Leszek Krzemień  Łukasz Bratasz  Michał Łukomski 《文物保护研究》2018,63(5):151-155

ABSTRACT

HERIe is a web-based decision-supporting software tool to facilitate the management of collection environments by precise assessment of climate-induced risk of physical damage to vulnerable objects. The software translates the relative humidity and temperature data recorded in the environment of the analysed object into a strain history experienced by it, and estimates the risk of physical damage using selected failure criteria. As all information is pre-calculated for the user, no engagement in complex and time-consuming numerical simulations is required. HERIe is available for testing at herie.mnk.pl. Detailed information on the methodologies used by the software is available at the above website which also contains tutorial climates. The current work aims at refining HERIe by selecting the damage criteria not only from laboratory studies but also from direct monitoring damage accumulation in objects, especially using the acoustic emission method. The software has been expanded to include moisture-induced response of parchment to support managing environments in libraries and archives.  相似文献   

Educational reform and the public: Two case studies of Poland and Saskatchewan (Canada)     

Danuta Kaproń  Werner Stephan 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1991,37(3):319-334

The involvement of the public in educational reform processes in modern democratic societies primarily serves the purpose of politically legitimizing the reform agenda. This study examines the rationales implicitly or explicitly submitted to the public to explain why educational reforms in the two countries should be endorsed. Although differences in the political culture caution against a hasty comparison of the two case studies, a number of politico-economic similarities allow for a valid juxtaposition. In Poland the context of socio-political and economic renewal prompted the reformers to emphasize the human-capital model which heightened public awareness and participation in the debate surrounding the reform. Public involvement in Saskatchewan was negatively affected for mainly two reasons. First, the government evidently manipulated public input by various means and thereby appears to have predetermined the outcome. Second, the rationale for the reform, based on a free-market model, tightened the linkage between the needs of the labour market and the mandate of the schools. As a result, public interest and participation was greatly diminished.

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Zusammenfassung Die Beteiligung der Öffentlichkeit an Reformen auf dem Gebiet der Erziehung in den modernen demokratischen Gesellschaften dient hauptsächlich der politischen Legitimierung der Reformpläne. In dieser Studie werden die der Bevölkerung offen oder unterschwellig vermittelten Gründe untersucht, warum den erzieherischen Reformen in beiden Ländern zugestimmt werden sollte. Obwohl die Unterschiede in der politischen Kultur Anlaß zur Vorsicht vor einem voreiligen Vergleich der beiden Fallstudien geben, so sprechen einige wirtschaftspolitische Ähnlichkeiten für eine sinnvolle Nebeneinanderstellung. In Polen führte der Zusammenhang sozialpolitischer und wirtschaftlicher Erneuerung dazu, daß die Reformer das Modell des menschlichen Kapitals, das das öffentliche Bewußtsein und die Teilnahme an der Debatte über die Reformen verstärkte, besonders betonten. Die öffentliche Beteiligung in Saskatchewan bekam aus zwei Gründen einen negativen Beigeschmack. Erstens manipulierte die Regierung offensichtlich in verschiedener Hinsicht die Beiträge der Öffentlichkeit, und sie scheint damit das Ergebnis vorbestimmt zu haben. Zweitens stärkten die Gründe für die auf ein Modell der freien Marktwirtschaft gegründeten Reformen die Verbindungen zwischen dem Bedarf des Arbeitsmarktes und dem Mandat der Schulen. Als Folge davon reduzierte sich das öffentliche Interesse und die Beteiligung erheblich.

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Résumé La participation du public aux processus de réforme éducative dans les sociétés démocratiques modernes sert essentiellement à légitimation politique du calendrier de réforme. Cette étude examine la raison d'être soumise implicitement ou explicitement au public et analyse pourquoi les réformes éducatives doivent être adoptées dans les deux pays. Bien que les divergences de cultures politiques mettent en garde contre une comparaison hâtive des deux études de cas, certaines correspondances politico-économiques permettent une juxtaposition valide. En Pologne, le contexte de la rénovation socio-politique et économique a pressé les réformateurs à mettre en valeur le modèle de capital humain qui a rehaussé l'information et la participation du public dans le débat autour de la réforme. La participation du public dans le Saskatchewan a été entravée pour deux raisons. Premièrement, il semblerait que le gouvernement ait manipulé les investissements publics de différentes manières et qu'il ait par cela prédéterminé le résultat obtenu. Deuxièmement, la légitimité de la réforme, orientée vers un modèle de marché libre, a renforcé les liens entre les besoins du marché de l'emploi et le mandat des écoles. Par conséquent, l'intérêt et la participation du public ont été considérablement affaiblis.

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Eye-tracking verification of the strategy used to analyse algorithms expressed in a flowchart and pseudocode     

Magdalena Andrzejewska  Anna Stolińska  Władysław Błasiak  Paweł Pęczkowski  Roman Rosiek  Bożena Rożek 《Interactive Learning Environments》2016,24(8):1981-1995

The results of qualitative and quantitative investigations conducted with individuals who learned algorithms in school are presented in this article. In these investigations, eye-tracking technology was used to follow the process of solving algorithmic problems. The algorithmic problems were presented in two comparable variants: in a pseudocode and flowchart. The eye-tracking data resulted in both qualitative (films registering the gaze paths) and quantitative measures, which allowed the detection and interpretation of the differences in the task-solving strategies between those who found the correct answer and those that did not. The results confirmed a hypothesis that use of the formal notation characteristic of a programming language for presenting algorithms is often a practical difficulty in the process of solving even simple tasks. This study opens a new direction of research; they show that eye-tracking technology can be used to optimise the educational process of learning programming.  相似文献