Improvised Millisecond Timer for Selected Experiments on Motion for General Physics

10.17158/219 ◽  
2012 ◽  
Vol 18 (1) ◽  
Author(s):  
Raymundo S. Moso ◽  
Neil C. Capricho
Keyword(s):  
Free Fall ◽  
T Test ◽  
Inclined Plane ◽  
Experimental Development ◽  
P Values ◽  
General Physics ◽  
Laboratory Activity ◽  
Significant Difference ◽  
The Difference ◽  
Millisecond Timer

This study is an experimental development which aimed to improvise a millisecond timer for motion experiments in General Physics. Specifically, it intended to design an opto-isolator circuitry with more sensitive response, which can interface with the stopwatches in the laboratory stockroom. This investigation also sought to describe the features of the improvised millisecond timer and to assess its comparability with the multifunctional millisecond timer in terms of time readings in each of the following experiments, namely: Slow Ball, Free Fall, Uniform Acceleration on an Inclined Plane, and Pendulum. Statistical analyses employed means, standard deviations and t-test to measure the significance of the difference in time readings. Results revealed that the improvised timer was as efficient as the multifunctional timer with respect to the experiments included in the study since the p-values were all greater than 0.05, implying that for each laboratory activity, there is no significant difference in the time readings from the two devices.

Effect of smoking on cardiovascular autonomic functions

2021 ◽  
Vol 9 (2) ◽  
pp. 3780-3784
Author(s):  
P.Vani ◽  
◽  
Sharan B Singh M ◽  
Keyword(s):  
Heart Rate ◽  
Autonomic Function ◽  
T Test ◽  
Resting Heart Rate ◽  
Autonomic Functions ◽  
Mean Values ◽  
Function Tests ◽  
Significant Difference ◽  
The Mean ◽  
The Difference

Introduction: Cigarette smoking is a prime risk factor for cardiovascular morbidity and mortality. Chronic smoking results in autonomic dysfunction leading to increased cardiovascular risk in smokers. The present study was planned to study the effect of smoking on the Cardiovascular Autonomic Functions among smokers. Materials and Methods: Fifty male subjects who were in the age group of 25 to 45 years. They were grouped into 25 smokers and 25 non-smokers. The participant subjects were selected among the staff members, residents and the patients from the routine OPD in SVIMS. Prior to study, they were informed about the procedure and the purpose of the study tests and written consents were obtained from them. The Cardiovascular Autonomic Function Tests were assessed by using a POLYGRAPH which was available in the department. Results and Conclusion: After applying the ‘t’-test for the difference between the two sample means, it was observed that there was a highly significant difference between the mean values of the BMI(i.e.p<0.01) and the para-sympathetic function tests among the smokers and the non – smokers(i.e.p<0.00). The Resting Heart Rate had significantly increased and the Deep breathing difference, the postural tachycardial index (Response to standing) and the Valsalva Ratio had significantly decreased in the smokers as compared to those in the non – smokers. After applying the ‘t’-test for the difference between the two sample means, it was observed that there was no significant difference between the mean values of the Postural hypotension test (i.e. p>0.05) and that there was a highly significant difference between the mean values of the Sustained handgrip test in the smokers and the non – smokers (i.e. p<0.00). KEY WORDS: Cardiovascular autonomic function tests, Smoking, Resting heart rate.

scholarly journals Adjustment among Private and Government Nursing College’s Girl Students Who Studding from Home and Hostel

2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Nitesh N. Patel
Keyword(s):  
Private Sector ◽  
Stress Level ◽  
T Test ◽  
Stress Scale ◽  
Significant Difference ◽  
Correlation Result ◽  
The Difference ◽  
Girl Students

The present investigation to find out the difference of adjustment between girl students of nursing living in home and hostel. The sample constructed of 160 girl students of nursing, out of which 80 girl students of nursing living in home, 60 from girl students of nursing living in hostel for this purpose of investigation. Adjustment stress scale Bell Adjustment Inventory (BIQ) was administered to measure their adjustment stress level. Scoring has been done as per manual. The data was analyzed by statistical ‘t’ test and correlation. Result was found that, there is significant difference in level of adjustment between girl students of nursing living in home and hostel. There is more adjustment level in the girl students of nursing who living in home then living in hostel. It was also found that, there is no significant difference between level of adjustment between private sector and government sector’s girl students of nursing.

scholarly journals Effects of Negative Emotions on Cognitive Schemas

2020 ◽  
Vol 11 (1) ◽  
pp. 65-69
Author(s):  
Marius-Gabriel Amzulescu ◽  
Andreea-Ionela Chiscop ◽  
Diana-Nicol Marin ◽  
Cristina Lare ◽  
Andra-Maria Popescu
Keyword(s):  
Negative Emotions ◽  
T Test ◽  
Control Group ◽  
Core Beliefs ◽  
Cognitive Schemas ◽  
Main Research ◽  
Significant Difference ◽  
Independent Variable ◽  
The Difference ◽  
The University

The present study investigates the effect of negative emotions (focusing on disappointment, sadness and regret) on cognitive schemas. The sample consist in students from the University of Bucharest (convenience groups). A univariate unifactorial experimental design was used, as the current study had one independent variable, negative emotions, and a dependent variable, cognitive schemas, which was measured with the Core Beliefs Questionnaire instrument. We applied T test for independent samples, using SPSS. The t test was statistically significant, t (45) = 2.57, p <0.05. The confidence interval (95%) for the difference between the averages is between 2.95 and 24.35. After applying the intervention, the evaluated sample (M = 43.17, SD = 29,074) showed a statistically significant difference compared to the control group (M = 29.52, SD = 11.257). The data collected support the main research hypothesis of the study, negative emotions can bring about changes in certain cognitive schemas by modifying, altering or disrupting them.

scholarly journals The Difference of Cardiovascular Endurance between Soccer Players and Handball Players

2019 ◽  
Vol 6 (3) ◽  
pp. 5341-5346
Author(s):  
Dr. Syed Kamaruzaman Syed Ali
Keyword(s):  
Secondary School ◽  
Secondary Schools ◽  
T Test ◽  
Soccer Players ◽  
Cardiovascular Endurance ◽  
Ex Post ◽  
Significant Difference ◽  
Ex Post Facto ◽  
The Difference ◽  
Run Test

The purpose of this study was to investigate the difference of cardiovascular endurance between secondary school soccer players and handball players. The study adopted ex-post facto design. The subjects were selected among soccer and handball players at one of the secondary schools. A total of 60 subjects were selected, 30 soccer players and 30 handball players. All subjects aged between 13 and 15 years old. The test used to test cardiovascular endurance was 12 minute Cooper Run Test. T-test was used to determine whether there is a significant difference between the cardiovascular endurance of the soccer players and handball players. The results of the study showed that there was no significant difference t(-1.65)=58, P>0.05 between soccer players (M = 2235; SD = 180.44) and handball players (M = 2307.83; SD = 160.19). Although there was no significant difference, the players from both teams still have good cardiovascular endurance fitness.

scholarly journals PENGARUH MODEL PEMBELAJARAN DISCOVERY LEARNING TERHADAP PEMAHAMAN KONSEP MATEMATIKA

2019 ◽  
Vol 6 (1) ◽  
pp. 11
Author(s):  
Miftahus Surur ◽  
Sofi Tri Oktavia
Keyword(s):  
T Test ◽  
Discovery Learning ◽  
Vocational School ◽  
Mathematical Concepts ◽  
Significant Difference ◽  
Direct Teaching ◽  
The Difference ◽  
Level Of Understanding ◽  
Academic Year ◽  
Quasi Experiment

Abstract: This study aims to determine the difference in understanding of students' concepts in mathematics subjects using discovery learning models and direct teaching models in class X of Khamas Asembagus Vocational School 2017/2018 academic year. This research is a type of quasi experiment research (quasi experiment). The population in this study was class X of the Khamas Asembagus Vocational School which consisted of 3 classes with 80 students. The sample in this study is class X TKJ 1 as many as 24 students as the experimental class and class X MM as many as 31 students as the control class. Data collection in this study was conducted using a test and then analyzed by t-test. The results of the analysis show that tcount> ttable or 3.198> 1.6741, it can be concluded that there is a significant difference in the level of understanding of students' concepts in mathematics between those using the discovery learning model and the direct teaching model.  Keywords: Discovery Learning, Learning Outcomes, mathematical concepts Abstrak: Penelitian ini bertujuan untuk mengetahui perbedaan tingat pemahaman konsep siswa pada mata pelajaran matematika yang menggunakan model discovery learning dan model pengajaran langsung pada siswa kelas X SMK Khamas Asembagus tahun pelajaran 2017/2018. Penelitian ini merupakan jenis penelitian quasi experiment (kuasi eksperimen). Populasi dalam penelitian ini yaitu kelas X SMK Khamas Asembagus yang terdiri dari 3 kelas dengan jumlah 80 siswa. Sampel dalam penelitian ini yaitu kelas X TKJ 1 sebanyak 24 siswa sebagai kelas eksperimen dan kelas X MM sebanyak 31 siswa sebagai kelas kontrol. Pengumpulan data dalam penelitian ini dilakukan dengan menggunakan test dan selanjutnya dianalisis dengan uji t-test. Hasil analisis menunjukkan bahwa thitung > ttabel atau 3,198 > 1,6741, dapat disimpulkan bahwa terdapat perbedaan yang signifikan tingkat pemahaman konsep siswa pada mata pelajaran matematika antara yang menggunakan model pembelajaran discovery learning dan model pengajaran langsung. Kata kunci: discovery learning, hasil belajar, konsep matematika

Absorbance errors from using pieced-together rotors in the Roche Cobas-Bio centrifugal analyzer.

1987 ◽  
Vol 33 (7) ◽  
pp. 1198-1199
Author(s):  
W G Miller ◽  
E K Armitage
Keyword(s):  
Break Point ◽  
T Test ◽  
Random Errors ◽  
Significant Difference ◽  
Break Points ◽  
The Difference ◽  
Roche Cobas

Abstract Two Cobas-Bio analyzers were found to have significantly increased imprecision, owing to absorbance errors, when we used rotors pieced together from segments of four to 10 cuvets. The difference in CV between whole/unbroken and four-cuvet or 10-cuvet segment rotors was significant by Student's unpaired t-test (P = 0.038 and less than 0.0001, respectively) and by the Mann-Whitney U test (P less than 0.0001 for either). Pieced-together rotors were found to have plastic fragments in some cuvets, both adjacent to the break points and in other positions within the segment. There was no significant difference in delta A between adjacent cuvets at break positions or in between break positions by unpaired t-test (P = 0.214) or by the Mann-Whitney U test (P = 0.235). There was a significant difference by either test (P less than 0.0001) for the delta A between adjacent cuvets in broken rotors and those in whole/unbroken rotors. We conclude that random errors in absorbance are observed both in cuvets adjacent to break positions and in cuvets removed from the break point when pieced-together rotors are used.

scholarly journals The difference of the salivary volume before and after drinking the rosella tea (Hibiscus sabdariffa)

2010 ◽  
Vol 22 (3) ◽  
Author(s):  
Mutiara Indah Permata Sari Islami ◽  
Edeh Roletta Haroen ◽  
Sri Tjahajawati
Keyword(s):  
In Vitro Study ◽  
T Test ◽  
Hibiscus Sabdariffa ◽  
Test Analysis ◽  
Community Benefits ◽  
Significant Difference ◽  
Before And After ◽  
Quasi Experimental ◽  
The Difference

Introduction: Roselle plants (Hibiscus sabdariffa) is one of the herbs that began to be used by the community. Benefits of this plant is quite a lot for health. The portion taken for consumption is the red flower petals. oselle tea is one of the sour beverages which can affect the salivary gland secretion. The purpose of this study is to analyzed the difference of salivary volume before and after drinking roselle tea. Methods: This study has been conducted to 40 students of Faculty of Dentistry, Padjadjaran University, ranging from 18-23 years of age with good general condition. This study is quasi-experimental in vitro study using the paired test analysis with α = 0,05 of the data collected from salivary volume. Results: The result of study indicates that the average of salivary volume before drinking roselle tea is 1,90 milliliter. After drinking roselle tea, the average of salivary volume is 4,54 milliliter. The result of paired test analysis shows that t-test is 16,172 and t-table is 2,022. The value of t-test > t-table. Result of statistic shown there is significant difference of salivary volume before and after drinking roselle tea. Conclusion: There is a difference of salivary volume before and after drinking roselle tea.

scholarly journals Efektivitas PBL setting TTW dan TPS ditinjau dari prestasi belajar, berpikir kritis dan self-efficacy siswa

2018 ◽  
Vol 5 (1) ◽  
pp. 116 ◽  
Author(s):  
Wahyu Hardiyanto ◽  
Rusgianto Heri Santoso
Keyword(s):  
Critical Thinking ◽  
Self Efficacy ◽  
Problem Based Learning ◽  
T Test ◽  
Learning Achievement ◽  
Critical Thinking Ability ◽  
Significant Difference ◽  
Thinking Ability ◽  
Quasi Experimental ◽  
The Difference

Penelitian ini bertujuan untuk mendeskripsikan keefektifan pendekatan problem-based learning (PBL) setting think talk write (TTW) dan problem-based learning (PBL) setting think pair share (TPS) serta mendeskripsikan perbedaan keefektifan antara PBL setting TTW dan PBL setting TPS ditinjau dari prestasi belajar, kemampuan berpikir kritis dan self-efficacy siswa. Penelitian ini merupakan penelitian eksperimen semu. Instrumen yang digunakan untuk mengumpulkan data adalah tes prestasi belajar, tes kemampuan berpikir kritis dan angket self-efficacy siswa. Data yang dikumpulkan dianalisis dengan menggunakan one sample t-test, dan analisis multivariat (MANOVA). One sample t-test dilakukan untuk menguji keefektifan pendekatan PBL setting TTW dan keefektifan pendekatan PBL setting TPS, sedangkan analisis multivariat (MANOVA) dilakukan untuk menguji perbedaan keefektifan antara kedua treatment tersebut ditinjau dari prestasi belajar, kemampuan berpikir kritis dan self-efficacy siswa. Hasil analisis menunjukkan bahwa pendekatan PBL setting TTW dan pendekatan PBL setting TPS efektif ditinjau dari prestasi belajar, kemampuan berpikir kritis dan self-efficacy siswa. Selain itu hasil analisis multivariat menunjukkan bahwa tidak terdapat perbedaan keefektifan yang signifikan antara pendekatan PBL setting TTW dengan pendekatan PBL setting TPS ditinjau dari prestasi belajar, kemampuan berpikir kritis dan self-efficacy siswa. The Effectiveness of PBL Setting TTW and TPS Seen from Students Learning Achievement, Critical Thinking and Self-Efficacy  AbstractThis study aims to describe the effectiveness of problem-based learning (PBL) setting think talk write (TTW) and PBL setting think pair share (TPS) and describe the difference of the effectiveness between PBL setting TTW and PBL setting TPS in terms of learning achievements, critical thinking ability and self-efficacy of grade students. This research is quasi-experimental research. The research instruments to collect the data are a learning achievement test, a test to examine the ability to think critically and a self-efficacy questionnaire. One sample t-test was conducted to examine the effectiveness PBL setting TTW and PBL setting TPS. Meanwhile, multivariate test (MANOVA) was carried out to determine the difference between PBL setting TTW and PBL setting TPS. The results show that both PBL setting TTW and PBL setting TPS are effective in terms of students learning achievements, critical thinking ability, and self-efficacy and there is no significant difference between the effectiveness of PBL setting TTW and the effectiveness of PBL setting TPS in terms of learning achievements, critical thinking ability and student self-efficacy.

scholarly journals Perbedaan Kecerdasan Emosional pada Mahasiswa yang Mengikuti UKM Musik dan Mahasiswa yang Mengikuti UKM Non-Musik

2019 ◽  
Vol 4 (2) ◽  
pp. 119
Author(s):  
Annisa Aulia Putri ◽  
Haryanto Haryanto
Keyword(s):  
Emotional Intelligence ◽  
Quantitative Method ◽  
T Test ◽  
Intelligence Scale ◽  
Significant Difference ◽  
The Difference

The aim of this study is to determine the difference in emotional intelligence of students from musical extracurricular and students from non-musical extracurricular. This research used quantitative method. Data collected with Emotional Intelligence Scale. The hypothesis in this study is that emotional intelligence of students from musical extracurricular higher than students from non-musical extracurricular. Total participant of this study were 83 active student members of the extracurricular in Universitas Gadjah Mada. Through the use of Independent T-test, found that there’s no significant difference between students from musical extracurricular than non-musical extracurricular, since mean of students from non-musical extracurricular (M = 180,750) is higher than students from musical extracurricular (M = 175,171). Therefore, emotional intelligence of students from musical extracurricular is not higher than students from non-musical extracurricular.

scholarly journals ANALISIS MANFAAT PENERAPAN PIJAT OKSITOSIN DAN EDUKASI DENGAN PEMBERIAN ASI EKSKLUSIF PADA BAYI 0-6 BULAN

2019 ◽  
Vol 10 (2) ◽  
Author(s):  
Agnes Isti Harjanti ◽  
Nella Valen Ika Puspita
Keyword(s):  
Exclusive Breastfeeding ◽  
T Test ◽  
Test Results ◽  
Breastfed Infants ◽  
Breastfeeding Education ◽  
Significant Difference ◽  
Level Of Knowledge ◽  
The Difference ◽  
National Analysis ◽  
Postpartum Mothers

ABSTRAK                                                                             Latar Belakang Analisis secara nasional dari Riskesdas 2013 dan Laporan rutin Direktorat Jendral Bina Gizi-KIA Kementrian Kesehatan Cakupan ASI Eksklusif saat ini belum bisa mencapai target pemerintah Indonesia yaitu sebesar 80%. Masalah hambatan dalam pencapaian ASI Eksklusif yaitu tingginya praktik pemberian makanan prelaktal ibu bekerja dan pemberian susu formula bayi, sehingga sangat sedikit bayi yang diberikan ASI eksklusif sampai 6 bulan.TujuanMenganalisis tingkat manfaat pijat, tingkat manfaat edukasi ASI Eksklusif, mendiskripsikan pemberian ASI eksklusif dan membedakan besarnya manfaat penerapan pijat oksitosin dengan edukasi ASI eksklusif pada ibu nifas yang menyusui eksklusif pada bayi di Kelurahan Karangayu Semarang.                                                  Metode       Penelitian ini merupakan jenis studi corelasional, yang menghubungkan variabel independent dengan variabel dependent yaitu edukasi ASI eksklusif dan pijat oksitosin dengan pelaksanaan pemberian ASI eksklusif dan pijat oksitosin yang benar. Sampel yang digunakan sebesar 40 ibu nifas dengan teknik sampling total sampling..                     Hasil Analisis tingkat manfaat pijat oksitosin pada ibu lebih meningkatkan ibu untuk melakukan pijat oksitosin sesuai anjuran sebanyak 50%-57,1%. Dengan hasil uji statistik ada perbedaan yang bermakna yaitu dengan hasil T-test 21,877 dan 7,804 dengan siknifikasnsi P< 0,000. Analisis tingkat manfaat edukasi ASI Eksklusif bahwa edukasi kurang meningkatkan keinginan ibu untuk menyusui eksklusif sebanyak 33,3%-50%. Analisis perbedaan tingkat pengetahuan dengan pemberian ASI eksklusif didapatkan ada perbedaan yang bermakna pada ibu nifas yang tingkat pengetahuannya baik dan akan memberikan ASI secara ekskusif dengan hasil T-test 21,877 dan 3,199 dengan signifikansi P < 0,000. Diskripsikan pemberian ASI eksklusif masih tergolong rendah sebanyak 47,5%. Perbedaan besarnya manfaat penerapan pijat oksitosin dengan edukasi ASI eksklusif pada ibu nifas yang menyusui eksklusif pada bayi. ada perbedaan yang bermakna pada ibu nifas yang tingkat pengetahuannya baik dan akan memberikan ASI secara ekskusif dengan hasil T-test 21,877 dan 3,199 dengan signifikansi P < 0,000, dan hasil T-test 21,877 dan 5,339 dengan siknifikansi P < 0,000. Perbedaan yang dapat dilihat bahwa ibu nifas yang memberikan ASI Eksklusif cenderung melakukan pijat oksitosin untuk meningkatkan ASInya dibandingkan dengan ibu nifas yang tidak menyusui secara eksklusif mereka juga tidak melakukan pijat oksitosin dengan baik dan benar.Kesimpulan  Membedakan besarnya manfaat penerapan pijat oksitosin dengan edukasi ASI eksklusif pada ibu nifas yang menyusui eksklusif pada bayi didapatkan perbedaan  hasil T-test 21,877 dan 3,199 dengan signifikansi P < 0,000, dan ada perbedaan hasil T-test 21,877 dan 5,339 dengan siknifikansi P < 0,000. Hasil perbedaan tingkat pengetahuan ASI eksklusif dengan pemberian pijat oksitosin pada ibu nifas terjadi perbedaan yang bermakna yaitu dengan hasil T-test 21,877 dan 7,804 dengan siknifikasnsi P< 0,000. Kata Kunci : ASI Eksklusif, Edukasi, Pijat Oksitosin,Ibu Nifas.     ABSTRACT                                                               Background National analysis of the 2013 Riskesdas and KIA Ministry of Health's Directorate General of Nutrition Development, Exclusive of breastfeeding Coverage has not been able to achieve the Indonesian government's target of 80%. The problem of obstacles in achieving exclusive breastfeeding is the high practice of prelactal feeding of mothers working and the provision of infant formula milk, so that very few babies are given exclusive breastfeeding for up to 6 months.Purpose  Analyzing the benefits of massage, the level of benefits of exclusive breastfeeding education, describing exclusive breastfeeding and differentiating the benefits of applying oxytocin massage with exclusive breastfeeding education for postpartum mothers who exclusively breastfed infants in Karangayu SemarangMethod This study is a correlational study, which relates the independent variables to the dependent variable, namely exclusive breastfeeding education and oxytocin massage with the implementation of exclusive breastfeeding and correct oxytocin massage. The sample used was 40 postpartum mothers with total sampling technique.                  Result  Analysis of the level of benefits of oxytocin massage on the mother further increased the mother to do oxytocin massage according to the recommendation of 50% -57.1%. With the results of statistical tests there were significant differences with the results of the T-test of 21.877 and 7.804 with a P <0.000.   Analiasis of the level of benefits of exclusive breastfeeding education that education does not increase the desire of mothers to exclusively breastfeed as much as 33.3% -50%. Analysis of differences in the level of knowledge with exclusive breastfeeding found that there were significant differences in postpartum mothers whose level of knowledge was good and would give exclusive breastfeeding with the results of T-test of 21.877 and 3.199 with a significance of P <0.000.       The description of exclusive breastfeeding is still as low as 47.5%. The difference in the benefits of applying oxytocin massage with exclusive breastfeeding education for postpartum mothers who exclusively breastfed infants. there is a significant difference in postpartum mothers with good knowledge level and exclusive breastfeeding with T-test results of 21.877 and 3.199 with a significance of P <0.000, and T-test results of 21.877 and 5.339 with a significance of P <0.000.  The difference can be seen that postpartum mothers who provide exclusive breastfeeding tend to do oxytocin massage to increase their breast milk compared to postpartum women who do not exclusively breastfeed they also do not do oxytocin massage properly and correctly.                                  Conclusion Differentiating the magnitude of the benefits of applying oxytocin massage with exclusive breastfeeding education for postpartum mothers who exclusively breastfed infants found differences in T-test results of 21.877 and 3.199 with a significance of P <0.000, and there were differences in T-test results of 21.877 and 5.339 with a significance of P <0.000. The results of differences in the level of knowledge of exclusive breastfeeding with oxytocin massage on postpartum mothers had a significant difference, with T-test results of 21.877 and 7.804 with P <0.000.Keywords: Exclusive breastfeeding, Education, Oxytocin Massage, Postpartum Mother

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