International research journal of engineering, IT & scientific research
Not a member yet
327 research outputs found
Sort by
The implementation of discovery learning and scientific learning approaches and students perspective in curriculum 2013: A study at 11th grade student of IPA, SMAN1 Bima, 2017/2018 academic year
Get PDFThis study deals with the Implementation of Discovery Learning and Scientific Learning Approaches and Students’ Perspective in Curriculum 2013. In this study, the writer would like to know how was description the Implementation of Discovery Learning and Scientific Learning approaches and students’ perspective in Curriculum 2013. The population of this study was the 11th Grade Students of IPA at SMAN 1 Bima in the Academic year 2017-2018. The writer used a descriptive qualitative. Data were collected from observation, interview, and questionnaires which had been obtained from a video recording of the naturally occurring English classroom. Then data were transcribed. In addition, the data were also gathered through teachers’ interview and questionnaires for students. The result of a study in research question for number 1 showed that teachers did not use Discovery Learning and Scientific Learning Approaches optimally in the classrooms. Therefore, this study recommended that teachers should pay attention to increase their comprehension of DLA and SLA in Curriculum 2013. While, the result of a study in research question for number 2 showed that number 1, there were 6 students chose “CA”, 12 students chose “A”, 4 student’s chose “N”, 4 students chose “LA” and there were 4 students chose “DA” or 61.33%. The second, there were 4 students chose “DA”, 5 students chose “LA”, 4 students chose “N”, 5 students chose “A” and there were 12 students chose “CA” or 49.33%. the third, there were 15 students chose “CA”, 4 students chose “A” 4 students chose “N”, 5 students chose “LA” and 2 students chose “DA” 76.66%. The fourth, there were 4 students chose “DA” or 76,66%, 3 students chose “LA” 6 students chose “N” 12 students chose “A” and 5 students chose “CA” or 52.66%. Fifth, there were 3 students chose “DA”, 5 students chose “LA”, 5 students chose “N”, 15 students chose “A” and only 2 students chose “CA” or 52.66%. Sixth, there were 8 students chose “CA”, 9 students chose “A”, 5 students chose “N”, 4 students chose “LA” and 4 students chose “DA” or 68.66%. Seventh, there were 3 students chose “DA”, 7 students chose “LA”, 3 students chose “N”, 7 students chose “A” and 10 students chose “CA” or 60 %. Eighth, there were 13 students chose “CA”, 4 students chose “A”, 4 students chose “N”, 2 students chose “LA” and 7 students chose “DA” or 69.33%. Ninth, there were 6 students chose “DA”, 4 students chose “LA”, 3 students chose “N”, 13 students chose “A” and 4 students chose “CA” or 56.66%. And the last one, there were 10 students chose “CA”, 8 students chose “A”, 3 students chose “N”, 5 students chose “LA” and 4 students chose “DA” or 70%. 
Development of three tier static electricity diagnostic test to identify student conceptions about static electricity
Get PDFThe purpose of this research was to develop and validate Three Tier Static Electricity Diagnostic Test (TTSEDT). The development procedure consists of four stages: define, design, develop, and validation. The subjects of this study consist of 2 physics education experts and 120 high school students, in 12th grade. The response of two experts was used to determine the content validity of TTSEDT. Meanwhile, the students' responses were used to determine the items internal consistency, discrimination index, difficulty index, and reliability index. The reliability of TTSDET was determined by KR-20. The results showed that: (1) TTSEDT meet content validity which means that TTSEDT items are really measures the students' conceptions and misconceptions about static electricity; (2) the items internal consistency index is in the interval 0.20-0.47; (3) the items discrimination index is higher than 0.20; (4) the difficulty index of test items is in the interval of 0.25 - 0.75; (5) the reliability index of TTSEDT is 0.73 (p<0.05). TTSEDT is a valid, reliable, and effective instrument for identifying students' conceptions of static electricity
The Degree of Subjective Complaints of Students Practice in Mechanical Technology Laboratories
Get PDFThe working practice of the engineering students is part of the learning process that is irreducible and indispensable. The composition of lecturing between theoretical and practical one is 40% to 60%. With this condition, the students spend more time at the laboratory. Generally, the students perform in the laboratory work by standing position. The design of research is observational cross-sectional. The method applied is observation, interview and measuring. The subjects of research are practicing students amounting to 21 students. Referring to the analysis of statistical test or Wilcoxon signed ranks test, the difference of effect of work position is significant, namely p < 0.05 towards musculoskeletal disorders (MSDs) before and after working. The quantity of the average complaint after working is score 44.62 ± 9.47. The result of Wilcoxon signed rank test shows that there is significant different effects of standing work position, namely p < 0.05 towards fatigue generally before and after working. The degree of the working pulse is on the average of 110.78 ± 17.80 bpm (beats per minutes) which can be categorized into the medium workload. Using paired t-test, the result is p < 0.05
Mechanical properties of artisanal bricks
Get PDFOne of the problems facing construction now is obtaining materials that meet certain conditions of durability and resistance, before weathering or natural phenomena, this work shows the study of the mechanical properties of clay bricks that have were made by hand, between three different brickyards near the Portoviejo canton, here a comparison is made by applying the Ecuadorian standards. The tests allowed performing the comparisons of moisture absorption, compression resistance, and flexural strength test. Field visits, interviews, laboratory tests and tabulation of results have were used as a methodology. The software has was used to make the graphs and statistical tables for its interpretation. As a result of the research, it was found that of the three artisan brick kilns studied. They only meet one of the three criteria established by the INEN. The test that showed the best results was the resistance to bending, while the absorption moisture and resistance to compression results that are below the parameters established in the standard, a situation that is of interest to the community, because a large percentage of the population close to these artisan brick kilns, build their homes with this material
Arm muscle power and energy system measurement of forehand drive on tennis
Get PDFThis study analyzed arm muscle power and energy system measurements that work during a forehand drive on tennis. The strength of the arm and energy system information is known to be processed through several stages, i.e. identification of stimuli, the response selection stage, and the programming stage to the giving instruction of muscle movement. In this case, the player's forehand driveability increased by the strategy of drills forehand flat and forehand topspin training. Exercises are given to both of group whose having similar the strong arm and the weak arm. Qualitative descriptions for measuring forehand drive strokes achievement are conducted to explain the strength of the arm using instrument that has been tested for its validity. This is done by troughs observing each stage treatment type of activities in the implementation of an exercise strategy which tailored the emotion process as a supporter of ability at doing forehand drive. The instruments used to see forehand driveability are designed and developed by the author himself by taking the factors of difficulties and skills possessed, then it is used as the subject of this study. The created instruments refer to the standardized of Hewitt's achievement test instrument presented by Jack E. Hewitt's, which uses numbers from 1 to 5. Furthermore, to do the measures of power for looking the energy systems is exerted by the Estimated Maximum Power Output and Capacity of Three Energy Systems table by Fox et al
Pathogenic bacteria contamination of loin of Bali cattle slaughtered at modern and traditional abattoirs
Get PDFThe aim of this study was to observe the contamination of pathogenic bacteria on the loin of the Bali cattle at abattoirs with modern cutting systems and traditional one. The loin samples were taken at modern abattoirs of Mambal which is managed by the Office of the Livestock Marine District of Badung. Loin sample that cutting traditional slaughter system was taken at Mambal village. The loins were taken into the laboratory of “Teknologi Hasil Ternak dan Mikrobiologi”, Faculty of Animal Science Udayana University to test their pathogen bacteria content. The design used in this study was completely randomized design (CRD). Data obtained were analyzed with Two Independent Sample test (T-Test). The results showed that the total microbial content of TPC (Total Plate Count) on the loins cutting at modern abattoir were 1.2 x 105 and they were higher significantly different (P < 0.05) than the loins at the traditional abattoir 7.6 x 104. The content of coliform bacteria for 3.93 X103 indicate the results of the loin of the Bali cattle which was slaughtered in a modern abattoir, were significantly lower (P < 0.05) than at the traditional one (3.28 x 104)
The production of biodiesel from jatropha curca and its social impact
Get PDFThe social impact of planting and harvesting the jatropha curca for the production of biodiesel in the province of Manabí is shown, where there are several municipalities involved in this process, mainly the populations that live in rural areas where the conditions are created for their improvement of quality and good living from the income they receive for performing these tasks. A social relationship model was designed that links the social development of rural areas in the province of Manabí with the sowing, harvesting and industrialization of jatropha curca in social development, demonstrating the benefit of using indigenous natural resources for the in the improvement of the quality of life of the populations directed to the economic, energetic, social and environmental sustainable development
Aquifer hydraulics parameters determination regarding one well base on geolistric data: a case study in Bugbug Karangasem Bali
No full textAquifer parameters knowledge was necessary for interpreting the aquifer state. It included porosity (?), hydraulic conductivity (K), specific storativity (Ss), storativity (S) and transmissivity (T). There were some methods for knowing the aquifer hydraulics parameters was Chow Method, Jacob Method, and Theis Method. These methods employed two wells i.e. one as test wells and another one monitored well for monitoring the water depth. The one assumption in this method was the aquifer equal thickness to the infinite width. What if the aquifer has an unequal thickness and limited width as well as on aquifer with buried veins or trenches? A research has been conducted to determine the aquifer hydraulic parameters with a single geoelectric on data-based wells. The steps that were taken i.e. firstly was measured by geoelectric method currently place to know the magnitude of aquifer resistivity/conductivity. Secondly, drilling was carried out in the place of the suspected aquifer. Thirdly, it was the water conductivity measurement obtained from the aquifer
Identification of risk factors and symptoms pulmonary tuberculosis of community health work in Gunung Sari area West Lombok District in 2016
Get PDFBackground: Tuberculosis is an infectious disease caused by bacteria Mycobacterium tuberculosis. This bacterium is a bacterium bacillus very strong so takes a long time to treat. As a chronic disease, pulmonary tuberculosis has several risk factors of symptom Tuberculosis factor. Objective: The objective of this study is to identify risk factors and symptoms of pulmonary Tuberculosis. Methods: The design used in this study is a cross-sectional descriptive study, with a non-random sampling method, is purposive judgmental (samples consideration) with the qualitative data. The research conducted by distributing questionnaires to the respondents after informed consent. Result: the risk factors that affect the incidence of Tuberculosis is high, can be seen from public education is low, the number of society who do not have jobs, people's incomes far below the standard wage area, many people who have children under five and there are still many who do not give BCG immunization, the number of people who are elderly, and home community is still high that smoke, the houses are solid, some people with Tuberculosis in the process of healing their patients with positive Tuberculosis who do not seek treatment, their pain smear + who interrupt their treatment, many people who have a family history of previously positive Tuberculosis
Supplementation of moringa (moringa oliefera) powder into ration in increasing the quality of broiler’s meat
Get PDFGuaranteed broiler meat in term of health aspect is necessary currently. Fat and cholesterol contents on broilers are one of quality aspects that should be considered, in which high fat and cholesterol levels would give direct impact on the health of the consumer. Therefore efforts to reduce fat and cholesterol levels of broiler meat are considered to be important. One of the alternatives that could be carried is by supplementing Moringa leaves powder to the chicken ration. Active substances contained by Moringa leaves are expected reduce the fat and cholesterol levels. This research aimed to measure carcass weight, carcass percentage, sub-cutaneous fat and cholesterol contents of the broiler meats, which feed by the supplemented ration. The research used 60 strain CP 707 broiler chickens at an age of 2 weeks, for 5 weeks. The research applied Completely Randomized Design (CRD) method with 5 treatments and 4 repetitions. Those treatments are feeding chickens without Moringa leaves powder supplementation (P0), feeding with 3% Moringa leaves powder supplementation (P1), feeding with 6% Moringa leaves powder supplementation (P2), feeding with 9% Moringa leaves powder supplementation (P3) and with 12% moringa leaves powder supplementation (P4). Each treatment was repeated 4 times, in which each repetition consisted of 3 broiler chickens