An example of the use of dynamic mathematics software to create problem-solving environments that serve multiple purposes     

Erdem Çekmez  Buket Özüm Bülbül 《Interactive Learning Environments》2018,26(5):654-663

Problem-solving is regarded as a major component of mathematical performance, and well-designed problem-solving-based learning environments have the potential to assist students in developing a meaningful understanding of mathematical concepts and procedures. In this respect, given its various features, dynamic mathematics software has been regarded by mathematics educators as a promising tool for designing such environments. This study presents an example of the use of technology to create a dynamic learning environment through a discussion of the pedagogical value of a problem selected for an activity, followed by the implementation sequence of the problem-solving activity in the classroom. The students’ experiences during the implementation of the activity are also discussed; and finally, an additional version of the problem is recommended for use in the classroom.  相似文献   

The effects of transport by pneumatic tube system on blood cell count,erythrocyte sedimentation and coagulation tests     

Fatma Emel Ko?ak  Mustafa Y?ntem  ?zlem Yücel  Mustafa ?ilo  ?zlem Gen?  Ayfer Meral 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2013,23(2):206-210

Introduction:

Today, the pneumatic tube transport system (PTS) is used frequently because of its advantages related to timing and speed. However, the impact of various types of PTS on blood components is unknown. The aim of this study was to examine the influence of PTS on the quality of routine blood cell counts, erythrocyte sedimentation, and certain blood coagulation tests.

Materials and methods:

Paired blood samples were obtained from each of 45 human volunteers and evaluated by blood cell count, erythrocyte sedimentation, and several coagulation tests, including prothrombin time (PT) and activated partial thromboplastin time (aPTT). Blood samples were divided into 2 groups: Samples from group 1 were transported to the laboratory via the PTS, and samples from group 2 were transported to the laboratory manually. Both groups were evaluated immediately by the tests listed above.

Results:

The blood sample test results from groups 1 and 2 were evaluated and compared. No statistically significant differences were observed (P = 0.069–0.977).

Conclusion:

The PTS yielded no observable effects on blood cell counts, erythrocyte sedimentation, or PT and aPTT test results. We concluded that the PTS can be used to transport blood samples and yield reliable results for blood cell counts, erythrocyte sedimentation, and several coagulation tests.  相似文献   

Lipid Parameters, Doses and Blood Levels of Calcineurin Inhibitors in Renal Transplant Patients     

Hayriye Senturk Ciftci  Tulay Kilicaslan Ayna  Yasar Kerem Calıskan  Aydin Turkmen  Mehmet Gurtekin 《Indian journal of clinical biochemistry : IJCB》2013,28(2):164-168

The calcineurin inhibitors (CNIs) [cyclosporin A (CsA) and tacrolimus (Tac)] are currently the most widely prescribed drugs for maintenance of immunosuppression after renal transplantation. These immunosuppressants are associated with side effects such as hyperlipidemia. We evaluated the differential effects of different CNIs on serum lipid parameters in renal transplant patients. Moreover, the aim of this study is to investigate the relationships between doses and blood levels of CNIs, and blood levels of CNIs and lipid parameters retrospectively. Two groups of 98 non-diabetic renal transplant patients, each treated with different CNIs, were studied: group A (n = 50, mean age: 31 ± 10 years), CsA, mycophenolate mofetil/azathioprin, steroid; group B (I = 48, mean age: 34 ± 12 years), Tac, mycophenolate mofetil/azathioprin, steroid. In renal transplant patients, CNIs blood levels and doses were examined at 1, 3, 6, 9, and 12 months after transplantation. Biochemical laboratory parameters including plasma lipids [total-cholesterol (CHOL), low-density lipoprotein (LDL)–CHOL, high-density lipoprotein (HDL)–CHOL, and triglycerides (TG)], CNI levels and doses were examined at 1, 3, 6, 9, and 12 months after transplantation. None of the patients received anti-lipidemic drugs during the study period. Blood levels of CNIs were detectable in all whole-blood samples by Cloned- Enzyme-Donor Immunoassay (CEDIA). The relationship between CNIs blood levels and CHOL, (LDL)–CHOL, HDL–CHOL, TG were evaluated. The mean serum CHOL levels and LDL–CHOL levels of patients in group A were found significantly higher than the patients in group B during the 12 month of follow up (p < 0.05). There was no significant difference in TG and HDL–CHOL plasma levels between group A and group B (p > 0.005). In group A the daily dose of CsA was significantly correlated with the mean blood levels of CsA at the 1st and 3rd months (r = 0.387, p = 0.005; r = 0.386, p = 0.006), respectively. In group A, the daily dose of CsA was significantly correlated with the mean serum TG levels during the 12 month of follow up (r = 0.420, p = 0.003). In group B, the daily dose of Tac was significantly correlated with the mean blood level of Tac (r = 0.335, p = 0.020) at the 1st month. No correlation was found between mean Tac blood levels and lipid parameters during the 12-month of follow up (p > 0.05). Significant positive correlation was observed between the CsA blood levels and LDL–CHOL levels (r = 0.338, p = 0.027) at the 3rd month. In the renal transplant patients with well functioning grafts, CsA therapy is associated with increased CHOL and LDL–CHOL ratio which represents an increased atherogenic risk tended to be associated with CsA. Serum LDL–CHOL levels may be effected by blood CsA levels.  相似文献   

Comparing active game-playing scores and academic performances of elementary school students     

Serhat Bahadır Kert  Meryem Köşkeroğlu Büyükimdat  Ahmet Uzun 《Education 3-13》2017,45(5):532-542

In the educational sciences, many discussions on the use of computer games occur. Most of the scientists believe that traditional computer games are time-consuming software and that game-playing activities negatively affect students’ academic performance. In this study, the accuracy of this general opinion was examined by focusing on the real game-playing scores of an elementary school students in Turkey. First, researchers selected a single-player strategy game. Second, the selected game was given to 105 fifth-grade students, who had not played it before, so that they could play it over a 30-minute period. The most successful student of the group finished the 23rd level of the game and collected 8152 points in total. In order to investigate the correlation between strategy game performance and academic performance, researchers derived the students’ average exam scores for six different courses (mathematics, physical science, science and technology, visual arts, music, and social sciences) from official documents. At the end of the study, it was found that participants’ mathematical or physical science skills were positively correlated with game success; however, a negative relationship was not exists between an individual's computer game success and academic performance.  相似文献   

An Investigation of Effectiveness of Conceptual Change Text-oriented Instruction on Students' Understanding of Solution Concepts   总被引：2，自引：0，他引：2  

Tacettin PinarbaŞi;  NurtaÇ Canpolat  Samih BayrakÇeken  Ömer Geban 《Research in Science Education》2006,36(4):313-335

This study investigated the effect of conceptual change text-oriented instruction over traditional instruction on students' understanding of solution concepts (e.g., dissolving, solubility, factors affecting solubility, concentrations of solutions, types of solutions, physical properties of solutions) and their attitudes towards chemistry. The sample of this study consisted of 87 undergraduate students from two classes enrolled in an introductory chemistry course. One of the classes was assigned randomly to the control group, and the other class were assigned randomly to the experimental group. During teaching the topic of solution concepts in the chemistry curriculum, a conceptual change text-oriented instruction was applied in the experimental group whereas traditional instruction was followed in the control group. The results showed that the students in the experimental group performed better with respect to solution concepts. In addition, it has been found that there was no significant difference between the attitudes of students in the experimental and control groups towards chemistry.  相似文献   

Girls and Information Technology in Denmark—an account of a socially constructed problem     

Bente Elkjær 《Gender and education》1992,4(1-2):25-40

The author offers an interpretation of why we resist associating the female sex with competence on the computer, and conversely, why the male sex is not regarded as a problem in terms of learning to deal competently with the computer. The aim of this paper is to investigate the relationship between gender and computers.  相似文献   

Between Turk and Muslim: children and the Qur’an courses after the 1928 Alphabet Law     

Hale Yılmaz 《Paedagogica Historica: International Journal of the History of Education》2019,55(6):812-828

ABSTRACT

This paper examines how the religious education of Turkish children in the “old letters” became an area of everyday contestation between the state and families and communities in the late 1920s and 1930s. Since children were seen as the nation’s future, state authorities were adamant about teaching the new generation the new alphabet and were equally interested in preventing them from learning the old alphabet. While schools began using the new Turkish alphabet in the 1928–1929 academic year, the informal neighbourhood Qur’an courses held in mosques and private homes became a fiercely contested site between a state determined to socialise children into secular nationhood (partly) by preventing them from learning the Arabic letters, and families and imams who were committed to giving children religious education (necessitating the study of the Arabic alphabet so the Qur’an could be read in its original Arabic). Combining primary sources from previously untapped Ministry of the Interior documents concerning the monitoring in Anatolian towns of these informal courses with insights from the subaltern school on everyday forms of resistance, this article sheds light on a dimension of the 1928 alphabet reform that ties together questions of alphabet change, national and religious identities, education, and childhood.  相似文献   

Coexistence of proangiogenic potential and increased MMP-9, TIMP-1, and TIMP-2 levels in the plasma of patients with critical limb ischemia     

Wieczór  Radosław  Wieczór  Anna Maria  Kulwas  Arleta  Pulkowski  Grzegorz  Budzyński  Jacek  Rość  Danuta 《Journal of Zhejiang University. Science. B》2019,20(8):687-692

Journal of Zhejiang University-SCIENCE B - 本研究通过比较间歇性跛行 (IC)...  相似文献   

The existence of dyslexia without severe literacy problems     

T.?R.?MilesEmail author  T.?J.?Wheeler  M.?N.?Haslum 《Annals of dyslexia》2003,53(1):340-354

This paper is concerned with those who display positive indicators on tests for dyslexia but seemingly do not have any severe literacy problems. A case study is presented by way of illustration. On the basis of data from the British Births Cohort Study (12,905 10-year-old children), it was found that some seemingly normal achievers who showed signs of dyslexia (N=422) obtained different results on five measures associated with dyslexia than did other normal achievers without such signs (N=4,998). The measures used were: underachievement at word recognition; and underachievement at spelling, reading comprehension, pseudoword reading, and mathematics. The proportion of boys to girls in the groups was also noted. It is suggested that these were cases of mild dyslexia, who, on the basis simply of reading and spelling tests, might escape detection. The consequences for the concept of dyslexia are discussed, and it is suggested that the needs of dyslexics with only mild literacy problems should not be overlooked.  相似文献   

Learning in multiple contexts: are there intra-, cross- and transcontextual effects on the learner’s motivation and help seeking?     

Jean-Luc Gurtner  Alida Gulfi  Philippe A. Genoud  Bernardo de Rocha Trindade  Jér?me Schumacher 《European Journal of Psychology of Education - EJPE》2012,27(2):213-225

In Germany, Austria and Switzerland, the majority of 15?C19-year olds follow vocational education programmes within a dual-track system, spending most of their time in a company and going to school only 1?day each week. With their separate aims, content and sociological organisation, the company and the school can be considered as two distinct contexts within which apprentices have to acquire the various skills and competencies of their future occupation. In this paper, the development of apprentices?? learning intentions and motivation to learn, subjective competence, perceived utility of what is learned and estimated learning place attractiveness (study 1) as well as their readiness to seek help in these different contexts over the year of training (study 2) is analysed using both longitudinal and cross-sectional data. The findings show significant differences in apprentices?? motivation, their beliefs and their readiness to seek help in the different contexts throughout the training. Moderate (cross-different contexts, same time) as well as transcontextual (different contexts, different times) influences can also be seen. These results emphasise the importance of a careful delimitation of contexts when studying the impact of contextual factors on learners?? motivation and behaviours; they also suggest that motivation within one of these contexts can indirectly affect the learner??s motivation within another of these contexts. It is therefore likely that, by using these various dynamics appropriately, educators might temporarily sustain learners?? motivation in an unappreciated context by having recourse to a better accepted one.  相似文献