排序方式： 共有18条查询结果，搜索用时 15 毫秒
1.
Selmaoui Sabah Agorram Boujemaa Khzami Salah-Eddine EL Abboudi Taoufik Berger Dominique 《美中教育评论》2010,7(8):28-36
Conceptions are analyzed as being the emergences from interactions between three poles： scientific knowledge （K）, values （V） and social practices （P）. The teachers＇ beliefs and values have a direct influence on the way of understanding and teaching a topic. These beliefs must be taken into account in the content and strategies of the teacher＇s formation. In this paper, the authors discuss the importance of studying and analyzing these conceptions and present the results of the research on teachers＇ and future teachers＇ conceptions about sexual health education. In this topic, the conceptions could be deeply rooted not only in scientific knowledge but also in value systems and social practices, because teachers often refuse to teach the ethical, psychological, economic and social issues not strictly reducible to biology, such as sexuality health. The authors used a questionnaire prepared jointly within the European project Biohead-Citizen. 相似文献
2.
Isabel Maria Bjork Claudine Bowyer-Crane 《European Journal of Psychology of Education - EJPE》2013,28(4):1345-1360
This study investigates the relationship between skills that underpin mathematical word problems and those that underpin numerical operations, such as addition, subtraction, division and multiplication. Sixty children aged 6–7 years were tested on measures of mathematical ability, reading accuracy, reading comprehension, verbal intelligence and phonological awareness, using a mix of standardised and experimenter-designed tests. The experimental hypothesis was that mathematical word problems will call upon cognitive skills that are different and additional to those required by numerical operations, in particular verbal ability and reading comprehension, while phonological awareness and reading accuracy will be associated with both types of mathematical problems. The hypothesis is partly affirmed and partly rejected. Reading comprehension was found to predict performance on mathematical word problems and not numerical operations, and phonological awareness was found to predict performance on both types of mathematics. However, the predictive value of verbal ability and reading accuracy was found to be non-significant. 相似文献
3.
Asmahan A. EL Ezzi Mohammed A. EL-Saidi 《Indian journal of clinical biochemistry : IJCB》2009,24(2):166-174
The goal of this study was to determine the stability of Total Prostrate Specific antigen (PSA-T) and Free Prostrate Specific
Antigen (PSA-F) in archival serum stored at 4°C and −20°C and subjected to temperature shift due to interruption in power
supply. Our study showed that PSA-T was stable up to 285 days and PSA-F was stable for 158 days under these conditions. Since
power supply interruption is an unavoidable problem in developing nations, our study has implication on the validity of measurement
of PSA-T and PSA-F in serum that was not properly stored due to emergency situations and for certain types of retrospective
studies. 相似文献
4.
CHANGES IN SOIL BIOLOGICAL PROPERTIES WITH THE ADDITION OF METSULFURON-METHYL HERBICIDE 总被引：1，自引：0，他引：1
ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｍａｉｎｔｅｎａｎｃｅｏｆｓｏｉｌｆｅｒｔｉｌｉｔｙｄｅｐｅｎｄｓｏｎｔｈｅｓｉｚｅａｎｄａｃｔｉｖｉｔｙｏｆｓｏｉｌｍｉｃｒｏｂｉａｌｂｉｏｍａｓｓ(Ａｌｅｘａｎｄｅｒ,1 977) ,ｗｈｉｃｈｉｓｏｆｆｕｎｄａｍｅｎｔａｌｉｍｐｏｒｔａｎｃｅｉｎｔｈｅｂｉｏｌｏｇｉｃａｌｃｙｃｌｅｓｏｆａｌｍｏｓｔａｌｌｍａｊｏｒｐｌａｎｔｎｕｔｒｉｅｎｔｓ (ＲｏｂｅｒｔａｎｄＣｈｅｎｕ ,1 992 ) .Ａｌｔｈｏｕｇｈｔｈｅｓｏｉｌｍｉｃｒｏｂｉａｌｂｉｏｍａｓｓｒｅｐ ｒｅｓｅｎｔｓｏｎｌ… 相似文献
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6.
Saad A. Noeman Kommajosyula Sharada Hassan El-Bena Samia EL Dardery Khalid AL Sawaf 《Indian journal of clinical biochemistry : IJCB》1994,9(1):40-42
The level of seven acute phase proteins was estimated together with copper and zinc in two groups of 15 children each suffering
from hepatitis A (HAV) or Hepatitis B (HBV). The mean concentration of α-1 antitrypsin, α-2 macroglobulin, ceruloplasmin,
C3 and copper was increased uniformly in both the types of viral hepatitis. α-1 acid glycoprotein, haptoglobin and zinc levels
were decreased in both the infections. A significant decrease in albumin level was observed in HAV while the decrease was
not significant in HBV. All the paramenters were repeated after one month on the day of discharge following the disappearance
of clinical signs and symptoms wherein the haptoglobin level returned to normal in HAV. No change was observed in the level
of other acute phase proteins. The level of the trace elements returned to normal. The observed increase in the levels of
acute phase proteins at the onset does not seem to have any significant relation to the subsequent course of the disease.
However, the level of acute phase proteins and other biochemical parameters may indicate a delayed biochemical recovery phase
in conjunction with the underlying hepatic pathological changes in the course of viral hepatitis in spite of clinical recovery. 相似文献
7.
Christopher Bjork 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2004,5(2):245-262
Indonesia has seen several recent attempts to devolve control over the curriculum to the local level. Rather than catalogue all of the problems encountered in the course of their implementation, the present contribution focuses on a single reform, the Local Content Curriculum (LCC). Analysis of local responses to this reform provides insights into the states influence on the actions and attitudes of Indonesian educators not previously detailed in research on educational decentralisation. These insights into the implementation of the LCC expand the understanding of the tangible effects of educational reform on actual learning institutions and pupils as well as inform about the central governments real ability to effect change in schools. The study also shows how the lethargy of local actors is bound to deeply engrained views about the role of Indonesian teachers in school, in the society and in the state. 相似文献
8.
NAGAT EL‐SANABARY 《Gender and education》1994,6(2):141-150
This paper explains the reproduction of gender divisions and power relations through education in a traditional Islamic country, Saudi Arabia. That country has drawn both upon Islam and its oil wealth to expand female education vastly within traditional boundaries. Its model of female education is unique among all Islamic countries, in its structure and strategies for the reproduction of gender divisions through (1) a dual system of male and female education; (2) a gender‐specific educational policy that emphasizes women's domestic function; (3) gender‐segregated schools and colleges; and (4) curriculum differentiation at the various educational levels. The author maintains that Saudi education, a microcosm of Saudi Arabian society, has intentionally instituted these mechanisms and structures as a means of cultural conservation and social control. The Saudi experience proves previous research findings that female educational expansion does indeed increase women's social and occupational options, but does not necessarily alter gender and power relations. 相似文献
9.
Asgeirsdottir BB Sigfusdottir ID Gudjonsson GH Sigurdsson JF 《Child abuse & neglect》2011,35(3):210-219
Objective
To examine whether depressed mood and anger mediate the effects of sexual abuse and family conflict/violence on self-injurious behavior and substance use.Methods
A cross-sectional national survey was conducted including 9,085 16-19 year old students attending all high schools in Iceland in 2004. Participants reported frequency of sexual abuse, family conflict/violence, self-injurious behavior, substance use, depressed mood, and anger.Results
Sexual abuse and family conflict/violence had direct effects on self-injurious behavior and substance use among both genders, when controlling for age, family structure, parental education, anger, and depressed mood. More importantly, the indirect effects of sexual abuse and family conflict/violence on self-injurious behavior among both males and females were twice as strong through depressed mood as through anger, while the indirect effects of sexual abuse and family conflict/violence on substance use were only significant through anger.Conclusions
These results indicate that in cases of sexual abuse and family conflict/violence, substance use is similar to externalizing behavior, where anger seems to be a key mediating variable, opposed to internalizing behavior such as self-injurious behavior, where depressed mood is a more critical mediator.Practice implications
Practical implications highlight the importance of focusing on a range of emotions, including depressed mood and anger, when working with stressed adolescents in prevention and treatment programs for self-injurious behavior and substance use. 相似文献10.
Sara M. Bjork Staffan L. Sjostrom Helene Andersson-Svahn Haakan N. Joensson 《Biomicrofluidics》2015,9(4)
We investigate the impact of droplet culture conditions on cell metabolic state by determining key metabolite concentrations in S. cerevisiae cultures in different microfluidic droplet culture formats. Control of culture conditions is critical for single cell/clone screening in droplets, such as directed evolution of yeast, as cell metabolic state directly affects production yields from cell factories. Here, we analyze glucose, pyruvate, ethanol, and glycerol, central metabolites in yeast glucose dissimilation to establish culture formats for screening of respiring as well as fermenting yeast. Metabolite profiling provides a more nuanced estimate of cell state compared to proliferation studies alone. We show that the choice of droplet incubation format impacts cell proliferation and metabolite production. The standard syringe incubation of droplets exhibited metabolite profiles similar to oxygen limited cultures, whereas the metabolite profiles of cells cultured in the alternative wide tube droplet incubation format resemble those from aerobic culture. Furthermore, we demonstrate retained droplet stability and size in the new better oxygenated droplet incubation format. 相似文献