Case Study 1: Falling Chains

Author(s):  
Carey Witkov ◽  
Keith Zengel

The one-parameter chi-squared methodology for parameter estimation and model testing is applied to an introductory physics lab experiment involving a falling chain. Data collection details along with sample data are provided and the results of the chi-squared analysis are interpreted. Problems are included (with solutions in an appendix).

Author(s):  
Carey Witkov ◽  
Keith Zengel

The two-parameter chi-squared methodology for parameter estimation and model testing is applied to an introductory physics lab experiment to model air resistance on falling coffee filters. Data collection details along with sample data are provided and the results of a chi-squared analysis are interpreted. Problems are included (with solutions in an appendix).


Author(s):  
Abbas Palash ◽  
Hamid Ja’fari ◽  
Hadi Ghanbarzadeh Darban

In recent decades, social sustainability has become the center of many researchers and planners’ attention. In this regard, one of the main approaches to achieve social sustainability is paying attention to the role of rural municipalities. Regarding the importance of this subject, the current study aimed to evaluate the rural municipalities’ performance in the achievement of social sustainability in the Central District of Nimrouz County. The current study is of applied type in terms of objective and it is of descriptive-analytical type in terms of methodology. The data collection instruments were questionnaires and interviews, and the statistical population included the rural households in the central district of Nimrouz County. The data were analyzed by the One-Sample t-test and the variance analysis and multivariable regression were also used to evaluate the rural governor’s (Dehtar) performance. The results indicated that rural governors’ performance in the social sustainability of the villages under study has managed to grab local villagers’ satisfaction and it was at an appropriate level.


2021 ◽  
Vol 6 (1) ◽  
pp. 76-85
Author(s):  
Ni Luh Ayu Novitasari ◽  
I.G.A Lokita Purnamika ◽  
Putu Eka Dambayana Suputra

  Abstract: The purpose of this study is to analyze the novice English teachers' perspectives on the one-page lesson plan principles at SMP Laboratorium Undiksha Singaraja. A case study qualitative design was used in this study. This study's data collection method included in-depth interviews to understand the novice teachers' perspectives. The subjects were two novice English teachers at SMP Laboratorium Undiksha Singaraja. The result showed the novice English teachers agreed one-page lesson plan is more efficient, effective, and students' oriented. However, novice English teachers had different perspectives for gathering students' information about the students' readiness, interests, and needs. This study implies that this one-page lesson plan policy needs to be sustained due to the English teachers' positive response. Keywords: Novice teachers; One-page lesson plan; Perspectives.   Abstract: Penelitian ini bertujuan untuk menganalisis perspektif dari guru bahasa Inggris baru mengenai prinsip – prinsip RPP satu halaman di SMP Laboratorium Undiksha Singaraja. Penelitian ini menggunakan metode penelitian studi kasus kualitatif. Metode pengumpulan data yang digunakan pada penelitian ini menggunakan interview mendalam untuk memahami perspektif para guru baru bahasa Inggris lebih mendalam. Subjek penelitian ini menggunakan dua guru bahasa Inggris baru di SMP Laboratorium Undiksha Singaraja. Hasil dari penelitian ini menunjukkan bahwa para guru bahasa Inggris baru setuju bahwa RPP satu halaman lebih efisien, efektif dan berorientasi pada siswa. Walaupun demikian, para guru bahasa Inggris baru tersebut memiliki perbedaan perspektif didalam mengumpulkan informasi mengenai kesiapan, ketertarikan, dan kebutuhan belajar siswa mereka. Implikasi dari penelitian ini menunjukkan bahwa peraturan RPP satu halaman harus tetap digunakan secara berkelanjutan karena respon positif dari para guru bahasa Inggris baru tersebut. Kata kunci: Guru baru; Perspektif; RPP satu halaman.


2021 ◽  
Vol 6 (1) ◽  
pp. 9-17
Author(s):  
Putu Agus Januarta ◽  
Lokita Purnamika Utami ◽  
Ida Ayu Made Istri Utami

Abstract: This research aims at analyzing the experienced English teachers’ perspectives on the fulfillment of one-page lesson plan principles at SMAN 1 Singaraja. The research design used a case study qualitative approach. The research subjects were 2 experienced English teachers. The data collection procedure used in this study was an in-depth interview. The instruments of data collection procedure used was interview guides. The results revealed that the experienced English teachers’ perspectives were positive as the teachers believed that the one-page lesson plan was more efficient, effective, and more student-oriented so that the teachers could make simple lesson plan easily. These results showed that the principles of developing the one-page lesson plan have been implemented well based on the Circular Letter Number 14 of 2019 concerning Simplification of the Lesson Plan. Besides, the policy on the simplification of lesson plan needs to be maintained as it gains positive responses from the experienced English teachers. Keywords: perspectives, one-page lesson plan princples, experienced teachers Abstrak: Penelitian ini bertujuan untuk menganalisis perspektif guru bahasa Inggris berpengalaman tentang pemenuhan prinsip RPP satu halaman di SMAN 1 Singaraja. Desain penelitian menggunakan pendekatan kualitatif studi kasus. Subjek penelitian adalah 2 orang guru bahasa Inggris yang berpengalaman. Prosedur pengumpulan data yang digunakan adalah wawancara mendalam. Instrumen prosedur pengumpulan data yang digunakan adalah pedoman wawancara. Hasil penelitian mengungkapkan bahwa perspektif guru bahasa Inggris yang berpengalaman adalah positif karena guru tersebut meyakini bahwa RPP satu halaman lebih efisien, efektif, dan lebih berorientasi pada siswa sehingga guru tersebut dapat membuat RPP yang sederhana dengan mudah. Hasil ini menunjukkan bahwa prinsip-prinsip penyusunan RPP satu halaman telah dilaksanakan dengan baik sesuai dengan Surat Edaran Nomor 14 Tahun 2019 tentang Penyederhanaan Rencana Pelaksanaan Pembelajaran (RPP). Selain itu, kebijakan penyederhanaan RPP ini perlu dipertahankan karena mendapat respon positif dari para guru bahasa Inggris yang berpengalaman. Kata Kunci: perspektif, prinsip RPP satu halaman, guru berpengalaman


Author(s):  
Carey Witkov ◽  
Keith Zengel

The chi-squared parameter estimation and model testing methodology is extended to the two-parameter case of a line with a slope and an intercept. Chi-squared is shown to be a paraboloid and is displayed in a contour plot. Techniques for extracting parameter correlations and uncertainties are developed. End-of-chapter problems are included (with solutions in an appendix).


Author(s):  
Carey Witkov ◽  
Keith Zengel

This book is the first to make chi-squared model testing, one of the data analysis methods used to discover the Higgs boson and gravitational waves, accessible to undergraduate students in introductory physics laboratory courses. By including uncertainties in the curve fitting, chi-squared data analysis improves on the centuries old ordinary least squares and linear regression methods and combines best fit parameter estimation and model testing in one method. A toolkit of essential statistical and experimental concepts is developed from the ground up with novel features to interest even those familiar with the material. The presentation of one- and two-parameter chi-squared model testing, requiring only elementary probability and algebra, is followed by case studies that apply the methods to simple introductory physics lab experiments. More challenging topics, requiring calculus, are addressed in an advanced topics chapter. This self-contained and student-friendly introduction to chi-squared analysis and model testing includes a glossary, end-of-chapter problems with complete solutions, and software scripts written in several popular programming languages, that the reader can use for chi-squared model testing. In addition to introductory physics lab students, this accessible introduction to chi-squared analysis and model testing will be of interest to all who need to learn chi-squared model testing, e.g. beginning researchers in astrophysics and particle physics, beginners in data science, and lab students in other experimental sciences.


Author(s):  
Carey Witkov ◽  
Keith Zengel

Model testing and parameter estimation are inextricably linked but often done separately. Chi-squared analysis combines model testing with parameter estimation, improving on both and providing answers to five important questions about the results of an experiment on a system for which a model is available: 1. What are the best fit parameter values? 2. Is the best fit a good fit? 3. What are the uncertainties on the best fit parameters? 4. Even if the fit is good, should the model still be rejected? 5. Is the revised model an improvement?


Author(s):  
Neha Jain

The purpose of the paper is to offer a comparison between survey and face to face interviews as tools for data collection in qualitative exploratory research. This study aims at encouraging new researchers to experiment with different data collection tools and then select the one that fits best to the research. Memos documented during data collection served as the basis for analysis. The memos were analyzed using a systematic three-step coding process to identify the challenges and benefits of using each of the two data collection tools. Using content analysis of the memos and field notes that were documented during the research, the author compares the challenges and benefits of each methodology for the selected case study. Interviews, when followed systematically, offer a useful alternative to surveys for exploratory research. This study can be extended to compare other research methodologies as well as further data collection tools.


2020 ◽  
Vol 1 (1) ◽  
pp. 47
Author(s):  
Elya Umi Hanik

Abstrack: The one of problem for student is dcreasing moral, in this case, study akidah akhlak seeks to establish personal morals learners in terms akidah and akhlak. Learning akidah akhlak not only focused on cognitive aspects but also the establishment of affective and psychomotor through religious culture that will ultimately achieve the goal of learning is the formation of the character of the students. This study aims to 1) analyze the application of akidah akhlak learning through religious culture in Islamic Elementary School (MIN) Plosorejo, Blora and Islamic Elementary School Tarbiyatul Islamiyah Winong, Pati. 2) analyze the effects of Akidah Akhlak learning to form the students’ characters through religious culture in Islamic Elementary School (MIN) Plosorejo, Blora and Islamic Elementary School Tarbiyatul Islamiyah Winong, Pati. This research is multi-case qualitative in Islamic Elementary School (MIN) Plosorejo, Blora. And 2) Islamic Elementary School Tarbiyatul Islamiyah Winong, Pati. Data collection was done through deep interviews, documentations, and observations. Some steps used to have data validity involved zealous observation, triangulations, and enough references. The analysis was done by following the data collection steps, data reduction, data presentation, and verification.  The results of the study included 1)The learning process of Akidah Akhlak was done contextually in the form of well learning whether inside or outside of the class through various learning methods involved modeling, discipline, habit, punishment and reward, and motivation. In the implementation of religious values, these hierarchies of steps were done as follows: creating religious value, speeches and advises, models, habit, extracurricular activity, posters with Hadist or motivating words which were attached to the wall, forming the leader’s soul through religious activity. 2) The effects of Akidah Akhlak learning through religious culture in Islamic Elementary School Plosorejo, Blora and Islamic Elementary School Tarbiyatul Islamiyah Winong, Pati were able to form the students’ characters in the expectation of religious values, independent, communicative, discipline, caring about surrounding, responsible, social care, and willing to know, and secondly to form the students’ achievement in every side of academic.Kaywords: Moral Learning, Students Character, Religious Culture


1987 ◽  
Vol 26 (02) ◽  
pp. 73-76 ◽  
Author(s):  
Kathryn Rowan ◽  
P. Byass ◽  
R. W. Snow

SummaryThis paper reports on a computerised approach to the management of an epidemiological field trial, which aimed at determining the effects of insecticide-impregnated bed nets on the incidence of malaria in children. The development of a data system satisfying the requirements of the project and its implementation using a database management system are discussed. The advantages of this method of management in terms of rapid processing of and access to data from the study are described, together with the completion rates and error rates observed in data collection.


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