scholarly journals 100 Years Molecular Beam Method Reproduction of Otto Stern’s Atomic Beam Velocity Measurement

Author(s):  
Axel Gruppe ◽  
Simon Cerny ◽  
Kurt Ernst Stiebing ◽  
Cedric George ◽  
Jakob Hoffmann ◽  
...  

AbstractThe history of Otto Stern’s pioneering measurement of the Maxwell-Boltzmann velocity distribution of a Silver atomic beam performed 1919 in Frankfurt is described. It is shown how Albert Einstein influenced Stern in his research. This experimental apparatus is not any more existing; therefore it was reconstructed in the workshops of the Physics faculty of the Goethe University in Frankfurt. The experimental verification of Stern’s results was finally achieved by a team of Frankfurt high school students (Gymnasium Riedberg) under the supervision of their teachers Axel Gruppe and Simon Cerny. By fighting against a number of difficulties, they succeeded to get the reconstructed apparatus started and were able to reproduce the results from the early experiments of Stern.

2020 ◽  
Author(s):  
Nélia Lúcia Fonseca

This study first approaches the history of the observer’s gaze, that is, as observers, we are forming or constructing our way of visualizing moving images. Secondly, it reaffirms the importance and need of resistance of the teaching / learning of Art as a compulsory curricular component for high school. Finally, the third part reports an experience with video art production in a class of first year high school students, establishing an interrelationship between theory and practice, that is, we study video art content to reach the production of videos, aiming as a final result, the art videos created by the students of the Reference Center in Environmental Education Forest School Prof. Eidorfe Moreira High School. The first and second stages of this research share a theoretical part of the Master ‘s thesis, Making films on the Island: audiovisual production as an escape line in Cotijuba, periphery of Belem, completed in 2013.


2007 ◽  
Vol 70 (1) ◽  
pp. 16-33 ◽  
Author(s):  
Daphne A. Jameson

National assessments of U.S. high school students' writing and other verbal abilities do not show that literacy has declined substantially in recent years. In fact, scores have been relatively stable since the 1980s. The proportion of students with solid writing and reading abilities has held fairly steady but remained small during the past 25 years. During this period, however, the proportion of high school graduates who enter higher education has soared. Thus, more students with weak verbal abilities now enter college. Initiatives that encourage people to continue their education have succeeded, whereas initiatives to improve writing, reading, and reasoning abilities have not. The complex causes of entering college students' weak verbal abilities include social and cultural forces as well as decisions by educational institutions. By understanding the complicated history of this issue and reframing it in positive terms, business and technical communication faculty can help effect change.


1937 ◽  
Vol 30 (5) ◽  
pp. 229-233

The Eighteenth Annual Meeting of the National Council of Teachers of Mathematics was held at the Palmer House, Chicago, Illinois, February 19–20, 1937. It was the largest meeting in the history of our organization, 836 registered and more than a thousand were in attendance. The Board of Directors met in two sessions and conducted the necessary business for the ensuing year. A trip was made to the Adler Planetarium and a lecture in the Planetarium was enjoyed on the subject, “The Determination of Time and Place.” At 8:00 p.m. the first General Meeting was called to order by President Martha Hildebrandt in the Grand Ball Room of the Palmer House. The Address of Welcome was made by James E. McDade, Assistant Superintendent of Schools, Chicago, Illinois, and the response by Mrs. Florence Brooks Miller, First Vice-President, Shaker Heights, Ohio. Secretary Schreiber made the opening announcements. Professor Albert A. Bennett of Brown University, Providence, Rhode Island addressed the group on the topic “Mathematics and Life.” This was followed by a series of projects in high school mathematics reported by some twenty high school students from Hyde Park High School, Chicago, Illinois, under the direction of Miss Beulah I. Shoesmith. This feature of the program was much appreciated by the audience of some seven hundred teachers.


1995 ◽  
Vol 25 (5) ◽  
pp. 1019-1025 ◽  
Author(s):  
I. F. Dancyger ◽  
P. E. Garfinkel

SYNOPSISA variety of sociocultural, familial and individual features associated with the eating disorders were examined in subjects with full syndrome (FS) and partial syndrome (PS) eating disorders and in normal high school students. The EAT-26 was administered to 995 high school students. This was followed by individual interviews with those who scored in the symptomatic range. Fifty-one students with PS eating disorders, 57 students without eating disorders (normal controls) and 30 hospital patients with FS, anorexia nervosa or bulimia nervosa were compared on subscales of the Eating Disorder Inventory, the Diagnostic Survey for Eating Disorders and the Beck Depression Inventory. The three groups displayed statistically significant differences on dimensions of EDI subscales Ineffectiveness and Interoceptive Awareness and also with respect to depression, history of being overweight and past history of emotional problems, as well as having mothers with medical illnesses. On these characteristics, the FS subjects displayed higher levels than the PS subjects, who in turn were higher than the NC subjects. The PS subjects displayed elevations on Body Dissatisfaction (EDI subscale), past medical illnesses, and mother's over-concern with eating and weight. These data support a continuum model of the eating disorders, but a continuum of multiple associated features rather than of dieting.


Neurology ◽  
2019 ◽  
Vol 93 (14 Supplement 1) ◽  
pp. S14.2-S14
Author(s):  
Jacob Kay ◽  
Colt Coffman ◽  
R. Davis Moore

ObjectiveTo examine the association between concussion history and suicidal behaviors in adolescents from the 2017 National Youth Risk Behavior Survey (YRBS).BackgroundResearch indicates that behavioral changes such as impulsivity and lack of emotional control are common following youth concussion. Additional evidence suggests that poor behavioral regulation may contribute to altered mood states that precede possible self-injury or fatality. To date, the relation between adolescent concussion and suicidal behaviors has not been explored on a national scale.Design/MethodsData from 14,765 high school students were cross-sectionally analyzed. Weighted multivariate logistic regressions were conducted to estimate adjusted odds ratios (AOR) and 95% confidence intervals (CI) of suicidal behaviors in students with and without a history of concussion. Age, sex, and alcohol use were controlled for in the regression model.ResultsAdolscents with history of concussion were at greater odds of reporting suicidal ideation (AOR = 1.39, CI 1.16, 1.65), suicide planning (AOR = 1.34, CI 1.14, 1.57), suicidal attempts (AOR = 1.68, CI 1.36, 2.09), and injurious suicidal attempts (AOR = 2.42, CI 1.82, 3.22). In addition, females with a history of concussion demonstrated greater odds of reporting poor mental health than males with history of concussion (p’s < 0.05). Further, history of concussion among individuals aged 16 years or older was significantly associated with increased suicidal behaviors, whereas this association was not observed in younger adolescents (p’s < 0.05).ConclusionsOur findings indicate that adolescents who sustain a concussion have greater odds of suicidality than their uninjured counterparts. Further, suicidality was better predicted by concussion exposure in females than males, and in older students. Consequently, these results indicate the importance of examining mental health following youth concussion, and highlight the need for further longitudinal research.


2019 ◽  
Vol 3 (3) ◽  
pp. 117
Author(s):  
Ester Inung Sylvia ◽  
Gad Datak ◽  
Visia Didin Ardiyani

Background: Pre-diabetes is a stage prior to diabetes mellitus (DM) and many studies in west countries found the risk factors of diabetes were mostly related to the nutri onal status of being overweight and obese. Dia- betes mellitus is not only experienced by adults but also by teenagers. They have the poten al for pre-diabetes because they may have unhealthy lifestyles such as smoking, consuming alcohol, high-calories, and junk foods and lack of physical ac vity. This study aims to determine the risk factors of pre-diabetes among senior high school students in Palangka Raya, Central Kalimantan, Indonesia. Methods: This study was a qualita ve study using a ques onnaire as an instrument for data collec on. It consists of a set of ques ons on diabetes risk. This research conducted in four public senior high schools in Palangka Raya with the total sample was 131 respondents have par cipated in this research. Results: 25 respondents (19.1%) from a total sample of 131 par cipants suffered from pre-diabetes and 30.5% of respondents had a family with DM. Some students (6.9%) had a smoking habit and 13% incidence of pre- diabetes in high school students related to these factors (R2: 0.13). Only less than half of the total respondents (43.5%) had a normal BMI. As many as 39.7% of respondents were undernourished while the rest were over- weight. Conclusion: Pre-diabetes factors on teenagers in Palangka Raya are female dominate had a history of DM, and being overweight. This study further leads to the importance of weight control that focusing on physical ac vity and dietary management as early precau ons. Health educa on is required to suppress the number of risk fac- tors for diabetes.


2020 ◽  
pp. 88-96
Author(s):  
Elena I. Belousova

The article is devoted to the organization of work on S.A. Yesenin’s poem “Sorokoust” in the context of studying the work of S.A. Yesenin’s in the 11th grade. In the introduction to the article, its purpose is outlined, which the author defines as a justification for the choice of methodological tools for understanding and mastering the classical poetic text included in the school literary education program by high school students. A brief digression into the history of the development, justification, and classification of methods of interaction between teachers and students in literature classes confirms the relevance of the problem in terms of the variety of combinations and patterns not only at the level of methods, but also within the method itself, taking into account the introduction of learning technologies and the development of a modern digital educational environment. Based on the analysis of literary and methodological approaches to the study of S.A. Yesenin’s creativity at school, the author shows the effectiveness of combining various methods and their elements in the study of the poet’s biography (teacher’s recitation, lecture elements, students’ reports with the involvement of media sources and media resources) at the stages of reading and analyzing the poem “Sorokoust” (working with sources, comparing the poem with the life’s primary basis, reading a poem with the involvement of various types of commentary, preparing an expressive reading of the poem by students), at the final classes on the topic (questions and tasks of a problematic, research nature, creative tasks, conducting independent educational research, attracting various types of art). Based on the proposed approach, the article actualizes the direction of the work in which the diversity of methods used is determined by the ideological and artistic creativity of the writer, the poet’s worldview, the atmosphere of the era, becomes a way of understanding the poet’s personality and artistic method by the learners, to find new meanings. The article concerns the choice of methods with the most pronounced focus on the emotional effectiveness of a poetic work on high school students, contributing to the development of the artistic taste and improving the reading and general culture.


2021 ◽  
Vol 22 (4) ◽  
pp. 556-566
Author(s):  
Carolina Silveira Santos ◽  
Carmen Regina Parisotto Guimarães

ResumoA abordagem Ciência-Tecnologia-Sociedade-Ambiente (CTSA) permite uma visão crítica sobre a ciência e a tecnologia e seus impactos, sejam esses positivos ou negativos, na sociedade e no ambiente, e os livros didáticos (LD), amplamente presentes na realidade escolar, se configuram como um importante aliado para tratar destas questões. Assim, este estudo se propõe a verificar a ocorrência desta abordagem nos livros didáticos do Ensino Médio, adotados pela rede estadual de ensino no município de Estância, SE, nos tópicos que retratam os temas ecossistemas costeiros e a poluição das águas. As categorias adotadas para análise foram: 1) relação de exemplos com a realidade; 2) presença de história da ciência; 3) relações entre a responsabilidade individual e a coletiva; 4) impactos sociais na aplicação da tecnologia; 5) a tecnologia na resolução de problemas e 6) tomada de decisões e resolução de problemas. A partir das análises dos quatro livros didáticos utilizados, nota-se que o enfoque CTSA tem sido abordado nos livros didáticos e que o tópico referente à poluição das águas surgem em uma relação CTSA, que está mais estabelecida. Uma maneira de contornar as lacunas existentes nos LD são elaborações ou busca de sequências didáticas direcionadas ao tema que não são aprofundadas nos livros. O livro didático sendo um material amplamente presente na realidade escolar se apresenta como um importante aliado dos professores, quando devidamente explorado, para promover uma aprendizagem crítico-reflexiva junto aos alunos do Ensino Médio. Palavras-chave: Recursos Didáticos. Ensino E Aprendizagem. Metodologias de Ensino. AbstractScience-Technology-Society-Environment approach (STSE) allows a critical view of science and technology and its impacts, whether positive or negative, on society and the environment, and Didactic Books (DB), widely present in reality school, are configured as an important ally to address these issues. Thus, this study aims to verify the occurrence of this approach in high school textbooks, adopted by the state school system in the municipality of Estância, SE, in the topics that depict the themes of coastal ecosystems and water pollution. The categories adopted for analysis were: 1) relation of examples to reality; 2) presence of a history of science; 3) relationships between individual and collective responsibility; 4) social impacts on the technology application; 5) technology in problem solving and 6) decision making and problem solving. From the analysis of the four textbooks used, it is noted that the STSE approach has been addressed in the textbooks and that the topic referring to water pollution is where the STSE relationship is most established. One way to circumvent possible gaps in the DB is to elaborate or search for didactic sequences directed to the theme that are not discussed in depth in the books. The textbook, being a material widely present in school reality, is an important ally for teachers, when properly explored, to promote critical-reflective learning with high school students. Keywords: Didactic Resources. Teaching and learning. Teaching Methodologies.


2014 ◽  
Vol 8 (1) ◽  
pp. 18-23
Author(s):  
Deon V. Canyon ◽  
Chauncey Canyon ◽  
Sami Milani ◽  
Rick Speare

Research on pediculosis has focused on treatment strategies and social aspects have been largely ignored. Pediculosis and its treatment in are associated with negative emotional responses while in developing countries pediculosis and its treatment may provide more an opportunity for positive social bonding. Attitudes to pediculosis have been proposed as important to successful control. Previous studies in Australia found that parents of primary school children say they treat pediculosis once it has been detected. This study retrospectively investigated attitudes towards treatment in teenage high school students in an attempt to collect information from those afflicted rather than from parents. Only participants with a history of pediculosis were recruited from a high school in Western Australia and they were asked to complete an anonymous questionnaire. The sample contained 128 Grade 8 and 9 students, aged 13-15 years old with an even gender split. Negative feelings towards being treated for head lice were observed in 41.5% of males and 54.7% of females and 49.5% of Caucasians and 40% of Asians. Anti-treatment sentiment was expressed by 19.7% of males and 10.9% of females. Shampooing with and without combing were the most preferred treatments overall. The results showed that 63.6% male and 52.7% female high school students were in favour of head lice treatments. This low percentage indicates that current treatments for head lice require improvement to be made more acceptable and that alternative treatments that are less unpleasant need to be developed. Strategies need to be explored to make treatment of pediculosis a more positive emotional experience.


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