scholarly journals Quantifying preload alterations using a sensitive chest-mounted accelerometer

2021 ◽  
Vol 2 (4) ◽  
Author(s):  
S E Schmidt ◽  
C B Kristensen ◽  
K Soerensen ◽  
P Soegaard ◽  
R Mogelvang
Keyword(s):  
Data Analysis ◽  
Mitral Valve ◽  
Aortic Valve ◽  
Cardiac Disease ◽  
T Test ◽  
Time Interval ◽  
Valve Closure ◽  
Ejection Time ◽  
Time Intervals ◽  
Significant Difference

Abstract   Seismocardiography (SCG) is a technology where the chest wall vibrations from the beating heart are measured using a highly sensitive accelerometer. SCG offers continuous measurement of cardiac function and potential applications include remote monitoring, diagnostic assessments, prognostic health checks and biventricular pacemaker optimization. Aim In the current study we examined how changes in preload influence SCG time intervals, by acute saline infusion. Methods We included twenty-six subjects, sixteen subjects with cardiac disease such as hypertrophic cardiomyopathy, dilated cardiomyopathy, aortic valve disease or ischemic heart disease (age 45.8±17.7 years and 93% male) and ten subjects without known cardiac conditions (age 42.1±14.4 years and 70% male). SCG was recorded from the xiphoid process using a custom-made sensor before and after acute infusion saline (median 2.0 L). The SCG signals were sampled with 5000 samples per second in 60 seconds, the individual heartbeats were identified using a dedicated segmentation algorithm and an average SCG beat was computed and used for the data analysis. Using a recently proposed nomenclature the following SCG fiducial points was identified: Es which coinciding with mitral valve closure, Gs which to some degree coincides with aortic opening, Bd coinciding with aortic valve closure and Fd coinciding with mitral valve opening [1]. The Es-Gs time interval was used as a measure of isovolumetric contraction time (IVCT), the Gs-Bd time interval was used as an estimate of ejection time (ET) and the Bd-Fd time interval as an estimate of isovolumetric relaxation time (IVRT). Paired t-test was used to test for significant response after infusion, while a two sample t-test was used to test for a significant difference in the observed response in subjects with or with our cardiac disease. Results For two subjects SCG after infusion was not obtained thus, twenty-four subjects were included in the final data analysis. In the whole group, acute saline infusion shortened the IVRT (Bd-Fd) from 91.0±15.3 ms to 82.7±15.3 ms (p=0.004) and prolonged the ET (Gs-Bd) from 329.4±35 ms to 343.4±33 ms (p<0.001). There was no significant change in IVCT (Es-Gs) which was 39.5±15.1 ms at baseline and 38.1±14.9 ms post-infusion (p=0.88). There was no significant difference in response between subjects with or without cardiac disease. Conclusion Increase in preload shortened the SCG time intervals related to the isovolumetric relaxation period and prolonged the period related to ejection time. SCG time intervals capture changes in preload, which demonstrates that the SCG is a potential modality for quantification of cardiac dynamics. Funding Acknowledgement Type of funding sources: None.  

EFEKTIVITAS STRATEGI CLOZE STORY MAPPING TERHADAP KEMAMPUAN MEMBACA PEMAHAMAN PADA SISWA KELAS V DI SD 2 PADOKAN KASIHAN BANTUL

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Danuri Danuri ◽  
Dwendha Lahitani
Keyword(s):  
Data Analysis ◽  
Learning Strategy ◽  
T Test ◽  
Effective Learning ◽  
Average Value ◽  
Story Mapping ◽  
Analysis Technique ◽  
Significant Difference ◽  
Quasi Experimental ◽  
Class Average

This study aims to determine the effectiveness of CSM strategies on comprehension reading skills in classes V Padokan 2 Elementary School. The research method used is a quasi-experimental method. In this study the subjects of the study were VA class students as the control class and V C as the experimental class with 28 VA and VC class students. Quantitative data analysis technique used is the calculation of independent sample t-test. Based on data analysis and discussion, researchers can conclude that CSM strategies are more effective than conventional methods of reading comprehension learning. The results of this study indicate that there is a significant difference between the experimental class and the control class as evidenced by the results of the independent sample t-test obtained by the value of Asymp. Sig (2-Tailed) 0.014 <0.05. CSM strategy is an effective learning strategy seen from the average value of the experimental class posstest which is 81.61 higher than the control class average value of 72.96.

scholarly journals Pembelajaran Berbasis Proyek Menggunakan Senam Transformasi dan Tetris Geogebra untuk Meningkatkan Kemampuan Berpikir Kreatif Siswa

2019 ◽  
Vol 6 (2) ◽  
pp. 657-666
Author(s):  
Muhammad Abror
Keyword(s):  
Data Analysis ◽  
21St Century ◽  
Creative Thinking ◽  
Thinking Skills ◽  
Learning Model ◽  
Project Based Learning ◽  
T Test ◽  
Significant Difference

The ability to think creatively is an important ability in mathematics to deal with the demands of the 21st century. One learning model that can improve students' mathematical creative thinking skills is Project Based Learning. This study aims to determine the improvement of students' mathematical creative thinking abilities through Project Based Learning using Transformation Gymnastics and Tetris GeoGebra. Research instruments used in this study is a test in the form of description, consisting of pretest and posttest that measures the ability of mathematical creative thinking including fluency, flexibility, originality, and elaboration. Data analysis includes tests of normality, homogeneity, and t-test using SPSS application assistance. The results showed that there was a significant increase in the value of students' creative thinking abilities, both in classrooms with Project Based Learning using Transformation Gymnastics and in classrooms with Project Based Learning using Tetris GeoGebra. There was no significant difference between the average posttest in the two classes. Thus, the two project tasks used in this Project Based Learning can be used in learning Transformation material.

scholarly journals Model Pengembangan Pembelajaran PJBL Berbasis Proyek untuk Meningkatkan Kreatifitas Siswa

2021 ◽  
Vol 3 (2) ◽  
pp. 140-147
Author(s):  
Nana Misrochah
Keyword(s):  
Data Analysis ◽  
Mean Value ◽  
T Test ◽  
Acid Base ◽  
Paired Sample ◽  
Cooking Oil ◽  
Achievement Rate ◽  
Significant Difference ◽  
Acid Base Titration ◽  
The Mean

Through this research, it is hoped that acid-base titration learning will be more meaningful and can contribute to student creativity. PjBL model is an integrated learning that is carried out cooperatively through projects that develop student skills, so that student creativity will increase. The project given in this research is making of soap from the wrinkled oil. In the process can be attributed to the application of acid-base titration material by calculation of acid numbers and saponification numbers on the cooking oil before being processed into soap. The results of data analysis shows data significance> 0.05 which means that the data is normally distributed for pretest and posttest. The data of paired sample t-test shows that the significance obtained is 0,000 <0.05 which means that there is a significant difference between the mean value of the integrated creativity test with the acid-base titration concept before treatment is given after treatment is given. Creativity improvement were calculated using the N-Gain value resulting in an average achievement rate of 0.50 and belonging to the moderate category. Posttest results indicate that the implementation of project-based LKP is effective in improving student creativity with classically average is 81.5%.

scholarly journals Maqashid Sharia Implementation in Indonesia and Bahrain

ETIKONOMI ◽  
2020 ◽  
Vol 19 (1) ◽  
pp. 155-168
Author(s):  
Erik Nugraha ◽  
Lucky Nugroho ◽  
Citra Lindra ◽  
Wiwin Sukiati
Keyword(s):  
Data Analysis ◽  
Research Method ◽  
Comparative Methods ◽  
T Test ◽  
Government Policies ◽  
Islamic Banking ◽  
Analysis Technique ◽  
Significant Difference ◽  
The Impact ◽  
Islamic Values

This study aims to analyze the performance of Islamic banking in Indonesia and Bahrain from the perspective of the maqashid shariah index. Performance is the success of an organization in implementing its strategy so that its achievement on the targets set. Maqashid shariah is a measurement of Islamic banking performance following the objectives and characteristics of Islamic banking. The research method used is descriptive and comparative methods, while the data analysis technique used is the independent t-test. The results of this study are that there is no significant difference between the application of Islamic maqashid in Indonesia and the implementation of Islamic maqashid in Bahrain. Thus, the application of Islamic values and the application of sharia maqashid has been integrated with Islamic bank business activities so that different government policies or regulations because each country has a specific constitution, then the impact is not significant or does not affect the implementation of sharia maqashid on operational and business activities in Islamic banks.JEL Classification: M41, M48, Z12 How to Cite:Nugraha, E., Nugroho, L., Lindra, C. N., & Sukiati, W. (2020). Maqashid Sharia Implementation in Indonesia and Bahrain. Etikonomi: Jurnal Ekonomi, 19(1), 155 – 168. https://doi.org/10.15408/etk.v19i1.14655. 

scholarly journals English Environment Programs at Polytechnic of National Informatics

2018 ◽  
Vol 1 (1) ◽  
pp. 37-43
Author(s):  
Fiviyanti Hasim
Keyword(s):  
Data Analysis ◽  
Null Hypothesis ◽  
Alternative Hypothesis ◽  
T Test ◽  
Control Group ◽  
Test Design ◽  
Significant Difference ◽  
Post Test ◽  
Second Year ◽  
Experimental Group

English Environment Programs is one of method In Improving Speaking Ability At Polytechnic of National Informatics. This research aims at finding out wheather or not the use of English environment Programs improve the speaking ability. This research used Quasy experimental method with two group pre-test and post-test design. The result of the data analysis showed that the degree of freedom (df) was 43 (n1 + n2 – 2) where n1 = 30 and n2 = 15 so 30 + 15 – 2 = 43), the level of significant (α) = 0.05, the t-test value of students’ speaking ability= 3.765, and the t-table value = 2.021. The t-test value is greater than the t-table value (3.765 > 2.021), this showed that there is a significant difference of improvement between the Control group and Experimental Group. It means that the Alternative Hypothesis (H1) is accepted while the Null Hypothesis (H0) rejected. Based on the result above, the researcher concluded that the using of English Environment Programs can improve the speaking ability of the second year students of Polytechnic of National InformaticsKeywords: English Environment, Speaking, Effectiveness

scholarly journals Pembelajaran Fisika Berbantuan Bahan Ajar Berbasis Kontekstual dengan Mengintegrasi Kearifan Lokal Untuk Meningkatkan Penguasaan Konsep Fisika

2017 ◽  
Vol 8 (2) ◽  
Author(s):  
Muhammad Satriawan ◽  
Muhammad Subhan ◽  
Fatimah Fatimah
Keyword(s):  
Data Analysis ◽  
Problem Solving ◽  
T Test ◽  
Equal Treatment ◽  
Teaching Materials ◽  
Physics Learning ◽  
Average Value ◽  
Conventional Teaching ◽  
Significant Difference ◽  
Contextual Teaching

This research is a quasi experimental research that aims to determine the differences and the improvement of mastery of physics concepts in the classroom using contextual teaching materials that integrated local wisdom with classes using conventional teaching materials. The research design used was pretest posttest control group design. Both the experimental and control classes are given equal treatment, but the experimental class uses contextual teaching materials that integrate local wisdom while the control class uses conventional teaching materials. The number of students in the experimental class is 25 students while the control class is 30 Students. The data analysis used parametric statistics with a two tailed t test to determine the difference and the N-gain test to find out the improvement of student conceptualization. The two tailed t test used SPSS 20 software assistance in the data analysis process. Based on result of data analysis that obtained Sig value. (2-tailed) by 0.000 <0.01 (α = 1%). This shows that there is a very significant difference between physics learning through problem solving method using contextual teaching materials with physics learning through problem solving using conventional teaching materials. In addition, based on the N-gain calculation the average value of  N-gain for the experimental class is 0.87 with the high category whereas the average value of N-gain for the control class is 0.65. This shows that the experimental class where the physics learning using materials Contextual teaching has increased the mastery of the concept higher than the control class that uses conventional teaching materials.

scholarly journals ENGLISH ENVIRONMENT PROGRAMS AT POLYTECHNIC OF NATIONAL INFORMATICS

2018 ◽  
Vol 6 (1) ◽  
Author(s):  
Fiviyanti Hasim ◽  
Hamzah Machmoed ◽  
Nasmilah Nasmilah
Keyword(s):  
Data Analysis ◽  
Null Hypothesis ◽  
Alternative Hypothesis ◽  
T Test ◽  
Control Group ◽  
Test Design ◽  
Significant Difference ◽  
Post Test ◽  
Second Year ◽  
Experimental Group

English Environment Programs is one of method In Improving Speaking Ability At Polytechnic of National Informatics. This research aims at finding out wheather or not the use of English environment Programs improve the speaking ability. This research used Quasy experimental method with two group pre-test and post-test design. The result of the data analysis showed that the degree of freedom (df) was 43 (n1 + n2 – 2) where n1 = 30 and n2 = 15 so 30 + 15 – 2 = 43), the level of significant (α) = 0.05, the t-test value of students’ speaking ability= 3.765, and the t-table value = 2.021. The t-test value is greater than the t-table value (3.765 > 2.021), this showed that there is a significant difference of improvement between the Control group and Experimental Group. It means that the Alternative Hypothesis (H1) is accepted while the Null Hypothesis (H0) rejected. Based on the result above, the researcher concluded that the using of English Environment Programs can improve the speaking ability of the second year students of Polytechnic of National Informatics

scholarly journals Komparasi Pelaksanaan Supervisi Akademik Kepala Sekolah di SMKN 1 Padang Gelugur dengan SMKN 1 Rao Selatan

2021 ◽  
Vol 2 (2) ◽  
pp. 236-242
Author(s):  
Vovi Tridian Ulfah ◽  
Yulianto Santoso ◽  
Yulianto Santoso ◽  
Rifma Rifma ◽  
Ermita Ermita
Keyword(s):  
Data Analysis ◽  
Data Collection ◽  
T Test ◽  
Teacher Professionalism ◽  
Learning Activity ◽  
Validity And Reliability ◽  
Learning Evaluation ◽  
Significant Difference ◽  
The Difference

Academic Supervision is a series of activities to assist in developing teacher professionalism in the implementation of learning with students carried out by leaders in schools, namely the principal. Academic supervision activities are carried out to help teachers improve learning activity planning, learning implementation, learning evaluation, and learning device preparation. This study aims to determine the implementation of the principal's academic supervision and see whether there is a significant difference in the implementation of the principal's academic supervision at SMKN 1 Padang Gelugur with SMKN 1 Rao selatan. This type of research is comparative descriptive and data collection is done by distributing questionnaires that have been tested for their validity and reliability. Before the data were analyzed, the data had been tested for normality and homogeneity and then performed the t-test to determine the difference value. Acquisition of data analysis is 1) academic supervision planning obtained 82.27% with the effective category. 2) the implementation of academic supervision obtained 79.34 in the quite effective category. 3) feedback and follow-up from the results of academic supervision obtained 75.2% including in the quite effective category. After testing the hypothesis using the SPSS application, namely the t-test, the result was that there was a difference in the implementation of the principal's academic supervision at SMKN 1 Padang Gelugur and SMKN 1 Rao Selatan because t count (2.154) <from t table (2.66). Based on the research results, the implementation of the principal's academic supervision at SMKN 1 Padang Gelugur was 1.08% more effective than SMKN 1 Rao Selatan.

scholarly journals The Effectiveness of Problem Based Learning (PBL) Based Socioscientific Issue (SSI) to Improve Critical Thinking Skills

2021 ◽  
Vol 2 (3) ◽  
pp. 1-9
Author(s):  
Muflichatu Nur Fita ◽  
Budi Jatmiko ◽  
Elok Sudibyo
Keyword(s):  
Critical Thinking ◽  
Data Analysis ◽  
Problem Based Learning ◽  
Thinking Skills ◽  
T Test ◽  
Critical Thinking Skills ◽  
Significant Difference ◽  
Before And After ◽  
Post Test ◽  
Innovative Solution

The purpose of this research was to see how effective the Problem Based Learning (PBL) based Socioscientific Issues (SSI) is at improving critical thinking skills. The sample used was grade seven in SMPN 4 Lamongan with 2 classes and each class contains 15 students. The design of the learning materials trial used  One-Group pre-test post-test design. Tests of critical thinking skills and student answer sheets were used to collect data. Techniques of data analysis used N-gain, paired t-test, and independent t-test. The result of this research is as follows: The effectiveness in terms of the critical thinking skills test the category increase is high, there is a significant difference between the test before and after learning with PBL based SSI and there is no difference N-gain in the two group classes and students' responses are classified as very good. Based on data analysis, it can be concluded that PBL with SSI is effective to improve critical thinking skills. The implications of this study are PBL-based SSI has the potential to be an innovative solution and alternative for improving critical thinking skills.

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