Introduction: Mental disorders such as stress, anxiety, and depression are becoming a global concern for young adults, especially among medical students. The tight schedule of medical education curriculum has shown to contribute to a high prevalence of mental disorders among students, which may increase the risk of physical symptoms such as migraines. Methods: Carried out at School of Medicine and Health Sciences Atma Jaya Catholic University of Indonesia - Jakarta, this cross-sectional study used a proportional sampling method. Depression, anxiety, and stress were measured by using DASS 42 scale and the incidence of migraine was measured by Migraine Screen Questionnaire (MS-Q). Data were statistically analyzed by using Chi-Square test with 95% significance level. Results: A total of 196 students had participated, consisting of 98 male and 98 female students, aged 18-21 years old, and they experienced stress (41.3%), anxiety (57.1%), and depression (26.5%). Migraine was found in (28.1%) of respondents with higher incidence among female students (61.8%). Stress, anxiety, and depression had a significant relationship with the incidence of migraines (p <0.01). Conclusion: Depression, anxiety, and stress are common among medical student in Atma Jaya Catholic University of Indonesia, and were significantly associated with the incidence of migraines. Further research is needed to describe other factors that can trigger migraines such as hormonal, physical, and dietary factors.
{"title":"HUBUNGAN STRES, CEMAS, DAN DEPRESI DENGAN KEJADIAN MIGRAIN PADA MAHASISWA KEDOKTERAN DI JAKARTA","authors":"Safira Nurrezki, Robi Irawan","doi":"10.25170/djm.v19i1.1200","DOIUrl":"https://doi.org/10.25170/djm.v19i1.1200","url":null,"abstract":"Introduction: Mental disorders such as stress, anxiety, and depression are becoming a global concern for young adults, especially among medical students. The tight schedule of medical education curriculum has shown to contribute to a high prevalence of mental disorders among students, which may increase the risk of physical symptoms such as migraines. \u0000Methods: Carried out at School of Medicine and Health Sciences Atma Jaya Catholic University of Indonesia - Jakarta, this cross-sectional study used a proportional sampling method. Depression, anxiety, and stress were measured by using DASS 42 scale and the incidence of migraine was measured by Migraine Screen Questionnaire (MS-Q). Data were statistically analyzed by using Chi-Square test with 95% significance level. \u0000Results: A total of 196 students had participated, consisting of 98 male and 98 female students, aged 18-21 years old, and they experienced stress (41.3%), anxiety (57.1%), and depression (26.5%). Migraine was found in (28.1%) of respondents with higher incidence among female students (61.8%). Stress, anxiety, and depression had a significant relationship with the incidence of migraines (p <0.01). \u0000Conclusion: Depression, anxiety, and stress are common among medical student in Atma Jaya Catholic University of Indonesia, and were significantly associated with the incidence of migraines. Further research is needed to describe other factors that can trigger migraines such as hormonal, physical, and dietary factors.","PeriodicalId":11442,"journal":{"name":"Dwight's Journal of Music","volume":"6 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74750115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Introduction: Education is part of a child's learning process to form cognitive abilities and a good personality. Children who are unable to involve thinking skills, sensory and motor integration systems, as well as verbal and non-verbal functions, will experience learning disorders. The inability to read (dyslexia), write (dysgraphia), or arithmetic (dyscalculia) forms the domain of specific learning disorder in children. Identification and intervention of such cases require the full cooperation of parents, medical personnel, and teachers. Case: A boy, seven years of age, had been having barrier in reading based on six months of observation by school teacher since first-grade elementary school. The child did not have health problems, growth and development were according to age, and was able to engage in social interaction both at school and home environment. The patient fulfilled the reading domain criteria of specific learning disorder based on the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Patients received adequate intervention and are now successfully in the second grade of elementary school with the advancement in reading skills. Conclusion: The importance of early identification, intervention, and long term follow up in children with a specific learning disorder to achieve optimal quality of life.
{"title":"IDENTIFIKASI DAN INTERVENSI GANGGUAN BELAJAR SPESIFIK PADA ANAK","authors":"E. Wijaya","doi":"10.25170/djm.v19i1.1279","DOIUrl":"https://doi.org/10.25170/djm.v19i1.1279","url":null,"abstract":"Introduction: Education is part of a child's learning process to form cognitive abilities and a good personality. Children who are unable to involve thinking skills, sensory and motor integration systems, as well as verbal and non-verbal functions, will experience learning disorders. The inability to read (dyslexia), write (dysgraphia), or arithmetic (dyscalculia) forms the domain of specific learning disorder in children. Identification and intervention of such cases require the full cooperation of parents, medical personnel, and teachers. \u0000Case: A boy, seven years of age, had been having barrier in reading based on six months of observation by school teacher since first-grade elementary school. The child did not have health problems, growth and development were according to age, and was able to engage in social interaction both at school and home environment. The patient fulfilled the reading domain criteria of specific learning disorder based on the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Patients received adequate intervention and are now successfully in the second grade of elementary school with the advancement in reading skills. \u0000Conclusion: The importance of early identification, intervention, and long term follow up in children with a specific learning disorder to achieve optimal quality of life.","PeriodicalId":11442,"journal":{"name":"Dwight's Journal of Music","volume":"5 1","pages":"70-79"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80499335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anastasia Christella Christella, Robby Makimian, R. Dewi
Introduction: Indonesia as a tropical country is vulnerable to mosquito-borne diseases like dengue fever, chikungunya, and zika by Aedes aegypti mosquito. Various efforts have been made to eradicate mosquitoes, one of which is by fogging. But this method only eradicates adult mosquitoes and its smoke can also have a bad impact for human health. Therefore, a variety of herbal plants began to be used as biolarvacide, including basil plants (Ocimum basilicum). Methods: This is an experimental research by comparing the lethal effect between concentration and time. In this experiment there were 10 larvas used for each concentration, which were 0,4%, 0,7%, 1,0%, 1,5%, and 2,0%. The lethal effect arising in larval groups is observed every 1 hour in the first 6 hours, and subsequently every 3 hours until 24 hours after exposure. Results: With one way ANOVA test, the result is p=0,012 (p<0,05) this shows that there is a significance difference between the different concentrations and the lethal effect of A.aegypti larvae. With Friedman test, the result is p=0,000 (p<0,05), this shows that there is a significance difference between the different time of exposure of the extract and the lethal effect of A.aegypti larvae. Conclusion: Leaves extract of O.basilicum has lethal effect as biolarvacide against A.aegypti larvae. The higher concentration and the longer time of exposure to O.basilicum extract, increases the lethal effect of A.aegypti larvae.
{"title":"THE EFFECT OF BASIL (Ocimum basilicum) LEAVES EXTRACT AS BIOLARVACIDE AGAINST Aedes aegypti LARVAE","authors":"Anastasia Christella Christella, Robby Makimian, R. Dewi","doi":"10.25170/djm.v19i1.1204","DOIUrl":"https://doi.org/10.25170/djm.v19i1.1204","url":null,"abstract":"Introduction: Indonesia as a tropical country is vulnerable to mosquito-borne diseases like dengue fever, chikungunya, and zika by Aedes aegypti mosquito. Various efforts have been made to eradicate mosquitoes, one of which is by fogging. But this method only eradicates adult mosquitoes and its smoke can also have a bad impact for human health. Therefore, a variety of herbal plants began to be used as biolarvacide, including basil plants (Ocimum basilicum). \u0000Methods: This is an experimental research by comparing the lethal effect between concentration and time. In this experiment there were 10 larvas used for each concentration, which were 0,4%, 0,7%, 1,0%, 1,5%, and 2,0%. The lethal effect arising in larval groups is observed every 1 hour in the first 6 hours, and subsequently every 3 hours until 24 hours after exposure. \u0000Results: With one way ANOVA test, the result is p=0,012 (p<0,05) this shows that there is a significance difference between the different concentrations and the lethal effect of A.aegypti larvae. With Friedman test, the result is p=0,000 (p<0,05), this shows that there is a significance difference between the different time of exposure of the extract and the lethal effect of A.aegypti larvae. \u0000Conclusion: Leaves extract of O.basilicum has lethal effect as biolarvacide against A.aegypti larvae. The higher concentration and the longer time of exposure to O.basilicum extract, increases the lethal effect of A.aegypti larvae.","PeriodicalId":11442,"journal":{"name":"Dwight's Journal of Music","volume":"43 1","pages":"24-29"},"PeriodicalIF":0.0,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79180353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-02DOI: 10.26505/djm.18025001007
Alaa Raheem Kareem, Wasan Munim, Niran Kamel, Mustafa Saleh, Sarah Abdulkareem Ali Al-Dujaili, Mohammed Luay Subhi
Background: Despite the use of several strategies to prevent post-Cesarean complications including wound infections and endometritis, they remain high morbidities. Objective: To assess the pre-Cesarean preparation of the vagina with povidone iodine as a preventive measure against post-cesarean wound infection and endometritis. Patients and Methods: A case-control study conducted on 200 pregnant women who prepared for elective Cesarean section. The operations were conducted either with standard classical abdominal scrub alone (as control group) or vaginal povidone iodine preparation in addition to the standard abdominal scrub. Each woman was followed up post-operatively for development of fever, endometritis, and wound infection, duration of postoperative antibiotics administration, and postoperative stay. Results: Post-Cesarean endometritis developed in 6% of women who received a vaginal preparation pre-operatively and 15% of the controls. 30% of control women and 20% of women in the treatment group had post-operative febrile illness. Wound infections were uncommon complications that occurred only in two percent of the control patients and one percent of patient in the treatment group. Conclusion: Pre-operative vaginal treatment with povidone iodine decreased the risk of post Cesarean endometritis. However, this protocol doesn't decrease the whole risk of postoperative wound infection or fever.
{"title":"Decreased Post-Cesarean Endometritis Following Povidone Iodine-Vaginal Preparation","authors":"Alaa Raheem Kareem, Wasan Munim, Niran Kamel, Mustafa Saleh, Sarah Abdulkareem Ali Al-Dujaili, Mohammed Luay Subhi","doi":"10.26505/djm.18025001007","DOIUrl":"https://doi.org/10.26505/djm.18025001007","url":null,"abstract":"Background: Despite the use of several strategies to prevent post-Cesarean complications including wound infections and endometritis, they remain high morbidities. Objective: To assess the pre-Cesarean preparation of the vagina with povidone iodine as a preventive measure against post-cesarean wound infection and endometritis. Patients and Methods: A case-control study conducted on 200 pregnant women who prepared for elective Cesarean section. The operations were conducted either with standard classical abdominal scrub alone (as control group) or vaginal povidone iodine preparation in addition to the standard abdominal scrub. Each woman was followed up post-operatively for development of fever, endometritis, and wound infection, duration of postoperative antibiotics administration, and postoperative stay. Results: Post-Cesarean endometritis developed in 6% of women who received a vaginal preparation pre-operatively and 15% of the controls. 30% of control women and 20% of women in the treatment group had post-operative febrile illness. Wound infections were uncommon complications that occurred only in two percent of the control patients and one percent of patient in the treatment group. Conclusion: Pre-operative vaginal treatment with povidone iodine decreased the risk of post Cesarean endometritis. However, this protocol doesn't decrease the whole risk of postoperative wound infection or fever.","PeriodicalId":11442,"journal":{"name":"Dwight's Journal of Music","volume":"77 1","pages":"79-86"},"PeriodicalIF":0.0,"publicationDate":"2020-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80787682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-02DOI: 10.26505/djm.18024981002
Ansam Mahdi Khalel, Enas Fadhil
Background: The repair of bone defects remains a major clinical challenge in dentistry. Bone is a highly vascularized tissue reliant on the close spatial and temporal connection between blood vessels and bone cells to maintain skeletal integrity. The health promotive , preventive, and curative properties of herbs were recognized by the ancient and the present pharmacist and physicians to form the theoretical foundations in Medicine. Objective: Immunohistochemistry of osteocalcin and histological study to prove that symphytum officinale oil when applied locally on generated bone defect healing in rat tibia, it was very effectiveness. Patients and Methods: 0ur study fourty male rats , weighting (250-350) grams ,aged (57)months ,was performed under same food and drinking utilization with same temperature conditions. The surgical operation of tibiae bone to medial side of rat were subjected, the bone defect were left to cure normally in control group , whilst experimental group was applied1μm symphytum officimale oil locally as a treatment. Every rat was killed at 7 or 14 days after surgery (ten rats for each period). Results: When we applied the symphytum officinale oil locally on bone defect increased cell count in each of osteocyte ,osteoclast and osteoblast and deposed of early osteoid tissue . stromal cells evaluated by Immunohistochemical study of osteocalcin which reported to increase in significant difference in symphytum officinale group when compared to control group. Conclusion: Low application of symphytum officinale oil in our study expressed to be a good and effective treatment in injuries of bone; these evidence in our data are pledging for a possible clinical management in future.
{"title":"Histological and Immunohistochemical Study of Osteocalcin to Evaluate The Effect of Local Application of Symphytum Officinale Oil on Bone Healing on Rat","authors":"Ansam Mahdi Khalel, Enas Fadhil","doi":"10.26505/djm.18024981002","DOIUrl":"https://doi.org/10.26505/djm.18024981002","url":null,"abstract":"Background: The repair of bone defects remains a major clinical challenge in dentistry. Bone is a highly vascularized tissue reliant on the close spatial and temporal connection between blood vessels and bone cells to maintain skeletal integrity. The health promotive , preventive, and curative properties of herbs were recognized by the ancient and the present pharmacist and physicians to form the theoretical foundations in Medicine. Objective: Immunohistochemistry of osteocalcin and histological study to prove that symphytum officinale oil when applied locally on generated bone defect healing in rat tibia, it was very effectiveness. Patients and Methods: 0ur study fourty male rats , weighting (250-350) grams ,aged (57)months ,was performed under same food and drinking utilization with same temperature conditions. The surgical operation of tibiae bone to medial side of rat were subjected, the bone defect were left to cure normally in control group , whilst experimental group was applied1μm symphytum officimale oil locally as a treatment. Every rat was killed at 7 or 14 days after surgery (ten rats for each period). Results: When we applied the symphytum officinale oil locally on bone defect increased cell count in each of osteocyte ,osteoclast and osteoblast and deposed of early osteoid tissue . stromal cells evaluated by Immunohistochemical study of osteocalcin which reported to increase in significant difference in symphytum officinale group when compared to control group. Conclusion: Low application of symphytum officinale oil in our study expressed to be a good and effective treatment in injuries of bone; these evidence in our data are pledging for a possible clinical management in future.","PeriodicalId":11442,"journal":{"name":"Dwight's Journal of Music","volume":"31 1","pages":"71-78"},"PeriodicalIF":0.0,"publicationDate":"2020-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75355924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-02DOI: 10.26505/djm.18025170114
Rajaa Hameed Rasheed
Background: The strong relationship between hypertension and stress have been confirmed in previous studies. The stress has been shown in rise blood pressure by rising heart rate and the cardiac output . Objective: To test the influences of exposure to red versus green light colors of cinema screen on the rate of heart beat and blood pressure among healthy college students. Patients and Methods: In this study a twenty eight apparently healthy students from college of fine arts Diyala University were enrolled. They were 18 males and 10 females with a mean age 22 years. Verbal consent was obtained from all participants. They were exposed to two colored lights of cinema screen (red and green) viewing at a distance 4 meters. The watching time was continued for 15 minutes. Thereafter ten minutes the systolic blood pressure [SBP], diastolic blood pressure [DBP] and heart rate was measured by medical personals. Data were collected and statistical analysis was done using the SPSS version 20 and P value was counted significant whenever it is less than 0.05. Results: The results revealed that the exposure to red light increases both systolic and diastolic blood pressure and heart rate compared to the green light, since the mean ±SD of diastolic blood pressure for red light and green light are 8.22±0.59 and 8.02±0.66 versus that of the control is 7.81±0.46 cmHg. Thus Red and green light had a significant effect on diastolic blood pressure (P <0.05). Whereas, the mean ± SD of systolic blood pressure for red light and green light are 11.85±1.11 and 11.77±1.24 versus that of the control (11.75±0.96) cmHg, with insignificant difference (P > 0.05). The mean ±SD of heart rate for red light and green light are 79.75±11.19 and 79.10±9.87versus that of the control 76.71±8.81 beats/min. Conclusion: Exposure to red and green cinema screen colors is altering autonomic nervous functions as expressed by increasing the blood pressure and heart rate among healthy college students.
背景:高血压与应激之间的密切关系已在以往的研究中得到证实。这种压力表现为血压升高，心率和心输出量增加。目的:探讨电影屏幕的红光与绿光对健康大学生心率和血压的影响。患者与方法:选取28名健康的迪亚拉大学美术学院学生为研究对象。其中男性18人，女性10人，平均年龄22岁。得到了所有参与者的口头同意。他们被暴露在电影屏幕上的两种颜色的光(红色和绿色)在4米的距离观看。观看时间为15分钟。10分钟后由医务人员测量收缩压、舒张压和心率。收集资料，采用SPSS version 20进行统计分析，P值小于0.05均认为P值显著。结果:与绿光相比，红光照射组的收缩压、舒张压和心率均升高，红光和绿光下的舒张压平均值±SD分别为8.22±0.59和8.02±0.66，而对照组为7.81±0.46 cmHg。可见，红、绿光对舒张压有显著影响(P < 0.05)。红灯和绿灯组心率平均值±SD分别为79.75±11.19和79.10±9.87，对照组为76.71±8.81次/分。结论:接触红色和绿色电影屏幕颜色会改变健康大学生的自主神经功能，表现为血压和心率升高。
{"title":"The Influence of Cinema Screen Colors on The Heart Rate and Blood Pressure among Students in the College of Fine Arts","authors":"Rajaa Hameed Rasheed","doi":"10.26505/djm.18025170114","DOIUrl":"https://doi.org/10.26505/djm.18025170114","url":null,"abstract":"Background: The strong relationship between hypertension and stress have been confirmed in previous studies. The stress has been shown in rise blood pressure by rising heart rate and the cardiac output . Objective: To test the influences of exposure to red versus green light colors of cinema screen on the rate of heart beat and blood pressure among healthy college students. Patients and Methods: In this study a twenty eight apparently healthy students from college of fine arts Diyala University were enrolled. They were 18 males and 10 females with a mean age 22 years. Verbal consent was obtained from all participants. They were exposed to two colored lights of cinema screen (red and green) viewing at a distance 4 meters. The watching time was continued for 15 minutes. Thereafter ten minutes the systolic blood pressure [SBP], diastolic blood pressure [DBP] and heart rate was measured by medical personals. Data were collected and statistical analysis was done using the SPSS version 20 and P value was counted significant whenever it is less than 0.05. Results: The results revealed that the exposure to red light increases both systolic and diastolic blood pressure and heart rate compared to the green light, since the mean ±SD of diastolic blood pressure for red light and green light are 8.22±0.59 and 8.02±0.66 versus that of the control is 7.81±0.46 cmHg. Thus Red and green light had a significant effect on diastolic blood pressure (P <0.05). Whereas, the mean ± SD of systolic blood pressure for red light and green light are 11.85±1.11 and 11.77±1.24 versus that of the control (11.75±0.96) cmHg, with insignificant difference (P > 0.05). The mean ±SD of heart rate for red light and green light are 79.75±11.19 and 79.10±9.87versus that of the control 76.71±8.81 beats/min. Conclusion: Exposure to red and green cinema screen colors is altering autonomic nervous functions as expressed by increasing the blood pressure and heart rate among healthy college students.","PeriodicalId":11442,"journal":{"name":"Dwight's Journal of Music","volume":"26 1","pages":"107-112"},"PeriodicalIF":0.0,"publicationDate":"2020-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90123589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Arisya Maulina Bowo, I. Irianingsih, B. N. Ruchjana
Indonesia has a diversity of climate influenced by several global phenomena such as El Nino Southern Oscillation (ENSO), Indian Ocean Dipole (IOD), and Asian-Australian Monsoon. Continuously climate changing indirectly causes a hydrometeorological disaster. The purpose of this study was to analyze the relationship between global climate elements (ENSO, IOD, Asian-Australian Monsoon) with rainfall in the West Java regions (Bogor Regency, Bandung Regency, Sukabumi Regency, Garut Regency, and Kuningan Regency) simultaneously. The selection of the five regions was based on the natural disaster reports of Badan Nasional Penanggulangan Bencana (BNPB). The research method used was a quantitative research method through one of multivariate analysis technique called canonical correlation analysis. The results of this study indicate that there was a simultaneous relationship between global climate elements, with rainfall in the West Java regions by 0.819. The global climate element and rainfall in the West Java regions that most influenced the relationship were Asian-Austalian Monsoon and Kuningan Regency rainfall.
{"title":"Canonical Correlation Analysis of Global Climate Elements and Rainfall in the West Java Regions","authors":"Arisya Maulina Bowo, I. Irianingsih, B. N. Ruchjana","doi":"10.24042/DJM.V3I2.5870","DOIUrl":"https://doi.org/10.24042/DJM.V3I2.5870","url":null,"abstract":"Indonesia has a diversity of climate influenced by several global phenomena such as El Nino Southern Oscillation (ENSO), Indian Ocean Dipole (IOD), and Asian-Australian Monsoon. Continuously climate changing indirectly causes a hydrometeorological disaster. The purpose of this study was to analyze the relationship between global climate elements (ENSO, IOD, Asian-Australian Monsoon) with rainfall in the West Java regions (Bogor Regency, Bandung Regency, Sukabumi Regency, Garut Regency, and Kuningan Regency) simultaneously. The selection of the five regions was based on the natural disaster reports of Badan Nasional Penanggulangan Bencana (BNPB). The research method used was a quantitative research method through one of multivariate analysis technique called canonical correlation analysis. The results of this study indicate that there was a simultaneous relationship between global climate elements, with rainfall in the West Java regions by 0.819. The global climate element and rainfall in the West Java regions that most influenced the relationship were Asian-Austalian Monsoon and Kuningan Regency rainfall.","PeriodicalId":11442,"journal":{"name":"Dwight's Journal of Music","volume":"1 1","pages":"143-154"},"PeriodicalIF":0.0,"publicationDate":"2020-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91187791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Mandailina, S. Syaharuddin, Dewi Pramita, M. Ibrahim, H. R. P. Negara
Some of the numeric methods for solutions of non-linear equations are taken from a derivative of the Taylor series, one of which is the Newton-Raphson method. However, this is not the only method for solving cases of non-linear equations. The purpose of the study is to compare the accuracy of several derivative methods of the Taylor series of both single order and two-order derivatives, namely Newton-Raphson method, Halley method, Olver method, Euler method, Chebyshev method, and Newton Midpoint Halley method. This research includes qualitative comparison types, where the simulation results of each method are described based on the comparison results. These six methods are simulated with the Wilkinson equation which is a 20-degree polynomial. The accuracy parameters used are the number of iterations, the roots of the equation, the function value f (x), and the error. Results showed that the Newton Midpoint Halley method was the most accurate method. This result is derived from the test starting point value of 0.5 to the equation root x = 1, completed in 3 iterations with a maximum error of 0.0001. The computational design and simulation of this iterative method which is a derivative of the two-order Taylor series is rarely found in college studies as it still rests on the Newton-Raphson method, so the results of this study can be recommended in future learning.
{"title":"Wilkinson Polynomials: Accuracy Analysis Based on Numerical Methods of the Taylor Series Derivative","authors":"V. Mandailina, S. Syaharuddin, Dewi Pramita, M. Ibrahim, H. R. P. Negara","doi":"10.24042/DJM.V3I2.6134","DOIUrl":"https://doi.org/10.24042/DJM.V3I2.6134","url":null,"abstract":"Some of the numeric methods for solutions of non-linear equations are taken from a derivative of the Taylor series, one of which is the Newton-Raphson method. However, this is not the only method for solving cases of non-linear equations. The purpose of the study is to compare the accuracy of several derivative methods of the Taylor series of both single order and two-order derivatives, namely Newton-Raphson method, Halley method, Olver method, Euler method, Chebyshev method, and Newton Midpoint Halley method. This research includes qualitative comparison types, where the simulation results of each method are described based on the comparison results. These six methods are simulated with the Wilkinson equation which is a 20-degree polynomial. The accuracy parameters used are the number of iterations, the roots of the equation, the function value f (x), and the error. Results showed that the Newton Midpoint Halley method was the most accurate method. This result is derived from the test starting point value of 0.5 to the equation root x = 1, completed in 3 iterations with a maximum error of 0.0001. The computational design and simulation of this iterative method which is a derivative of the two-order Taylor series is rarely found in college studies as it still rests on the Newton-Raphson method, so the results of this study can be recommended in future learning.","PeriodicalId":11442,"journal":{"name":"Dwight's Journal of Music","volume":"54 1","pages":"155-160"},"PeriodicalIF":0.0,"publicationDate":"2020-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78342157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This research was aimed to analyze student's errors on triangular and quadrilateral material in terms of problem-solving ability. This research was motivated by the low problem-solving ability and errors often made by students during the mathematics learning. The research approach was descriptive-qualitative that was done by analyzing the students' difficulty in solving description problems. The techniques of data collection were observation, learning outcomes tests, and interviews. The data were analyzed qualitatively based on Newman Error Analysis. Based on the results of the research, it was found that students' reading errors were in the high, medium, and low categories. Students' comprehension errors were in the medium and low categories, students' transformation errors were in the high, medium, and low categories, students' process skills errors were in the high, low, and medium categories and students writing errors (encoding error) were in the high, medium, and low categories.
{"title":"Students’ Errors in Mathematical Problem-Solving Ability on the Triangular and Quadrilateral Materials at Junior High Schools (SMP) Jakarta","authors":"Rosida Yahya Asriyani, I. Handayani, W. Hadi","doi":"10.24042/DJM.V3I2.5728","DOIUrl":"https://doi.org/10.24042/DJM.V3I2.5728","url":null,"abstract":"This research was aimed to analyze student's errors on triangular and quadrilateral material in terms of problem-solving ability. This research was motivated by the low problem-solving ability and errors often made by students during the mathematics learning. The research approach was descriptive-qualitative that was done by analyzing the students' difficulty in solving description problems. The techniques of data collection were observation, learning outcomes tests, and interviews. The data were analyzed qualitatively based on Newman Error Analysis. Based on the results of the research, it was found that students' reading errors were in the high, medium, and low categories. Students' comprehension errors were in the medium and low categories, students' transformation errors were in the high, medium, and low categories, students' process skills errors were in the high, low, and medium categories and students writing errors (encoding error) were in the high, medium, and low categories.","PeriodicalId":11442,"journal":{"name":"Dwight's Journal of Music","volume":"47 1","pages":"125-136"},"PeriodicalIF":0.0,"publicationDate":"2020-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82226266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Subian Saidi, U. Muharramah, L. Zakaria, Yomi Mariska, Triyono Ruby
The Lorenz curve is generally used to find out the inequality of income distribution. Mathematically a standard form of the Lorenz curve can be modified with the aim of simplicity of its symmetric analysis and calculation of the Gini coefficient that usually accompanies it. One way to modify the shape of the Lorenz curve without losing its characteristics but is simple in the analysis of geometric shapes is through a transformation (rotation). To be efficient and effective in computing and analyzing a Lorenz curve it is necessary to consider using computer software. In this article, in addition to describing the development of the concept of using transformations (rotations) of the standard Lorenz curve in an easy-to-do form, the symmetric analysis is also described by computational techniques using Mathematica® software. From the results of the application of the development of the concept of the Lorenz curve which is carried out on a data gives a simpler picture of the computational process with relatively similar computational results.
{"title":"Modified Lorenz Curve and Its Computation","authors":"Subian Saidi, U. Muharramah, L. Zakaria, Yomi Mariska, Triyono Ruby","doi":"10.24042/DJM.V3I2.5871","DOIUrl":"https://doi.org/10.24042/DJM.V3I2.5871","url":null,"abstract":"The Lorenz curve is generally used to find out the inequality of income distribution. Mathematically a standard form of the Lorenz curve can be modified with the aim of simplicity of its symmetric analysis and calculation of the Gini coefficient that usually accompanies it. One way to modify the shape of the Lorenz curve without losing its characteristics but is simple in the analysis of geometric shapes is through a transformation (rotation). To be efficient and effective in computing and analyzing a Lorenz curve it is necessary to consider using computer software. In this article, in addition to describing the development of the concept of using transformations (rotations) of the standard Lorenz curve in an easy-to-do form, the symmetric analysis is also described by computational techniques using Mathematica® software. From the results of the application of the development of the concept of the Lorenz curve which is carried out on a data gives a simpler picture of the computational process with relatively similar computational results.","PeriodicalId":11442,"journal":{"name":"Dwight's Journal of Music","volume":"203 1","pages":"99-108"},"PeriodicalIF":0.0,"publicationDate":"2020-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77021076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：