PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)最新文献

{"title":"Oil bodies variation in ephypitic leafy liverworts at Universitas Indonesia, Depok","authors":"S. Wijaya, A. Putrika, A. Dwiranti, M. Atria","doi":"10.1063/1.5132503","DOIUrl":"https://doi.org/10.1063/1.5132503","url":null,"abstract":"","PeriodicalId":376274,"journal":{"name":"PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121121437","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}

{"title":"Phytochemistry screening and total flavonoid test on plants associated mangrove (Pluchea indica and Sesuvium portuculastrum Leafs) at Blanakan, Subang, West Java","authors":"D. Susylowati, N. Takarina","doi":"10.1063/1.5132511","DOIUrl":"https://doi.org/10.1063/1.5132511","url":null,"abstract":"","PeriodicalId":376274,"journal":{"name":"PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127490517","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}

{"title":"Pricing life insurance premiums using Cox regression model","authors":"D. Sari, D. Lestari, S. Devila","doi":"10.1063/1.5132461","DOIUrl":"https://doi.org/10.1063/1.5132461","url":null,"abstract":"The standard mortality rate usually determines the life insurance premium. In this paper, the mortality rate will be estimated by involving observable risk factors such as gender and smoking status. For that purpose, the Cox regression model is applied. The partial maximum likelihood is used to estimate the parameters of the model and the Nelson-Aalen estimator is used to estimate the baseline hazard function. Then, we will calculate individual life insurance premiums based on the estimated value of the mortality rate. The result is that the amount of single net premiums of smokers is higher than that of non-smokers.","PeriodicalId":376274,"journal":{"name":"PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126759323","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}

{"title":"The development of magnetoacoustic tomography system with current injection","authors":"I. Hidayat, I. D. Darpita, S. Wijaya, P. Prajitno","doi":"10.1063/1.5132443","DOIUrl":"https://doi.org/10.1063/1.5132443","url":null,"abstract":"Magnetoacoustic Tomography (MAT) is one of tomographic methods that utilizes acoustic signals (ultrasonic) produced by the interaction of an external magnetic field with electrons in an object’s material to produce an image that describes the distribution of electrical conductivity in the object’s material. MAT combines good contrast from electrical impedance tomography techniques and good spatial resolution from sonography. In this research study, a MAT system has been designed, with a method of injecting electric current that varies with time, into the object material under the influence of an external static magnetic field, or often called Magnetoacoustic Tomography with Current Injection (MAT-CI). Because the electric current is injected from the outside of the sample to be reconstructed, the sample used as an object must be conductive. To investigate the ability of the system that has been built, this experiment used various types of material with various shapes as samples. Overall, the system created can acquire the ultrasonic signal generated by the sample and this system is able to reconstruct the test sample shape image with the help of k-Wave tomography reconstruction software, which is a Matlab-based magneto/photo acoustic tomography image reconstruction software.Magnetoacoustic Tomography (MAT) is one of tomographic methods that utilizes acoustic signals (ultrasonic) produced by the interaction of an external magnetic field with electrons in an object’s material to produce an image that describes the distribution of electrical conductivity in the object’s material. MAT combines good contrast from electrical impedance tomography techniques and good spatial resolution from sonography. In this research study, a MAT system has been designed, with a method of injecting electric current that varies with time, into the object material under the influence of an external static magnetic field, or often called Magnetoacoustic Tomography with Current Injection (MAT-CI). Because the electric current is injected from the outside of the sample to be reconstructed, the sample used as an object must be conductive. To investigate the ability of the system that has been built, this experiment used various types of material with various shapes as samples. Overall, the system create...","PeriodicalId":376274,"journal":{"name":"PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116606178","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}

{"title":"Green synthesis of dihydropyrimidine based on cinnamaldehyde compound under solvent-free using graphene oxide as catalyst","authors":"A. Cahyana, A. R. Liandi, R. Yunarti, D. Febriantini, B. Ardiansah","doi":"10.1063/1.5132496","DOIUrl":"https://doi.org/10.1063/1.5132496","url":null,"abstract":"Cinnamaldehyde is an essential compound in the cinnamon that have plentiful bioactivities. This research aims to modify cinnamaldehyde to become derivatives of dihydropyrimidine using graphene oxide (GO) as catalyst. GO was synthesized from graphite powder. Afterward, GO was applied in dihydropyrimidine synthesis with one-pot three-component method without solvent. The Fourier transform infrared (FTIR) spectra has proven the formation of GO (3119 cm−1, 1723 cm−1, 1373 cm−1, and 1076 cm−1). To evaluate the ability of GO as catalyst, one synthesized compound with the name 6-methyl-5-propionyl-4-styryl-3,4-dihydropyrimidin-2(1H)-one was obtained. Then, the synthesized compound was analyzed for its absorbance, functional group, and molecular weight using UV/Vis spectrophotometry, FTIR and GC-MS. The best condition of reaction is with the in condition of catalyst 7.5 %, temperature 100 °C, and reaction time 30 minutes. In this condition, the product yield is 83.7 %.","PeriodicalId":376274,"journal":{"name":"PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129878301","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}

{"title":"Ethylenediamine-derived imidazoline synthesis using MAOS (Microwave Assisted Organic Synthesis) method","authors":"I. I. Lestari, D. U. C. Rahayu, D. A. Nurani, Y. Krisnandi, E. Budianto","doi":"10.1063/1.5132493","DOIUrl":"https://doi.org/10.1063/1.5132493","url":null,"abstract":"In searching of an alternative organic compound for corrosion inhibitor, ethylenediamine-derived imidazoline was successfully synthesized by reacting ethylenediamine (EDA) with stearic acid (SA) using MAOS (Microwave Assisted Organic Synthesis) method with various reaction times. The optimum yield of EDA-SA imidazoline was 94.3 % at 5 min reaction time. EDA-SA imidazoline was identified using TLC and melting point analyzer. Moreover, the structure of EDA-SA imidazoline had been elucidated using UV-Vis, FTIR, 1H-NMR, and LC-MS/MS spectral data. This study revealed that ethylenediamine-derived imidazoline can be synthesized using MAOS method which can be used as a corrosion inhibitor towards carbon steel as further application.In searching of an alternative organic compound for corrosion inhibitor, ethylenediamine-derived imidazoline was successfully synthesized by reacting ethylenediamine (EDA) with stearic acid (SA) using MAOS (Microwave Assisted Organic Synthesis) method with various reaction times. The optimum yield of EDA-SA imidazoline was 94.3 % at 5 min reaction time. EDA-SA imidazoline was identified using TLC and melting point analyzer. Moreover, the structure of EDA-SA imidazoline had been elucidated using UV-Vis, FTIR, 1H-NMR, and LC-MS/MS spectral data. This study revealed that ethylenediamine-derived imidazoline can be synthesized using MAOS method which can be used as a corrosion inhibitor towards carbon steel as further application.","PeriodicalId":376274,"journal":{"name":"PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124685305","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}

{"title":"Antioxidant activity of extract of Mistletoe, Dendrophthoe pentandra (L.) Miq., lived in three different host plants, collected from Kampus UI, Depok","authors":"E. Yismairai, N. M. Hemelda, Yasman, W. Handayani","doi":"10.1063/1.5132527","DOIUrl":"https://doi.org/10.1063/1.5132527","url":null,"abstract":"Mistletoe, Dendrophthoe pentandra (L.) Miq., was reported to be the most frequently obligate hemiparasite species found in Kampus UI, Depok. Mistletoe has been reported containing bioactive compound metabolites. This research investigated the antioxidant activity of three mistletoe individuals live on different host plants in Kampus UI. The host plants are Mangifera indica, Bauhinia pupurea and Stelechocarpus burahol. Samples extracted with methanol to yield crude extracts and DPPH (1,1-Diphenyl-2-Picrylhydrazyl) method was used to test the antioxidant activity. The results showed that all extract of mistletoe has antioxidant activities with a range IC50 value of 10-25 µg/mL. The HPLC analysis showed that each extract has quite similar chromatogram profile. Meanwhile, the total flavonoid and phenolic compound from all the extract range are 37.64-52.92 g QE/100 g and 349.6-431.6 mg GAE/100 g. These results suggested that mistletoe extracts might have interesting bioactive metabolites as an antioxidant and therefore should be further investigated for isolation and structure elucidation. This research also gives a conclusion that different host plants seem to have almost the same metabolites composition.Mistletoe, Dendrophthoe pentandra (L.) Miq., was reported to be the most frequently obligate hemiparasite species found in Kampus UI, Depok. Mistletoe has been reported containing bioactive compound metabolites. This research investigated the antioxidant activity of three mistletoe individuals live on different host plants in Kampus UI. The host plants are Mangifera indica, Bauhinia pupurea and Stelechocarpus burahol. Samples extracted with methanol to yield crude extracts and DPPH (1,1-Diphenyl-2-Picrylhydrazyl) method was used to test the antioxidant activity. The results showed that all extract of mistletoe has antioxidant activities with a range IC50 value of 10-25 µg/mL. The HPLC analysis showed that each extract has quite similar chromatogram profile. Meanwhile, the total flavonoid and phenolic compound from all the extract range are 37.64-52.92 g QE/100 g and 349.6-431.6 mg GAE/100 g. These results suggested that mistletoe extracts might have interesting bioactive metabolites as an antioxidant and ...","PeriodicalId":376274,"journal":{"name":"PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124742456","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}

{"title":"Alternative form of analytic solution of European option price in model with stochastic volatility driven by Ornstein-Uhlenbeck process using bilateral Laplace transform","authors":"G. Christanto, B. Handari, H. Tasman","doi":"10.1063/1.5132452","DOIUrl":"https://doi.org/10.1063/1.5132452","url":null,"abstract":"Bilateral Laplace transform is known for its capability on taking Laplace transform over all real numbers. This paper provides a different approach by using inverse bilateral Laplace transform on deriving analytic solution of European option price formula, both call option and put option. Case of uncorrelated processes between asset price and volatility of Black-Scholes model of asset pricing with stochastic volatility driven by Ornstein-Uhlenbeck process is used to portray price of a risky asset in the market. This paper also provides proof for required formulations to derive the analytic solutions and reference for alternative forms of inverse bilateral Laplace transform.","PeriodicalId":376274,"journal":{"name":"PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125701005","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}

{"title":"Development of magnetic generator data acquisition system based on microcontroller for Faraday rotation instrumentation","authors":"L. Azmaiza, A. Sudarmaji, D. Handoko","doi":"10.1063/1.5132448","DOIUrl":"https://doi.org/10.1063/1.5132448","url":null,"abstract":"This research is performed to develop a magnetic generator to create magnetic field which has an influence in altering the magnetic optic, due to the produced magnetic field on a specimen among both groups of coil, which can be quantitatively investigated. The magnetic field uniformity among both groups was also investigated three-dimensionally. The magnetic generator contained of auxiliary coil, is reversed for each group and integrated toward a ferromagnetic material as the core for the magnetic induction amplification. The supplied current was set for up to 10A and produced 0.1T. This can be monitored by microcontroller-computer communication protocol. The produced magnetic generator is going to be applied for another research to produce magnetic field for an instrument of Faraday rotation. This study produced a transfer function B vs. I with B = 98.2650 I + 18.2732.This research is performed to develop a magnetic generator to create magnetic field which has an influence in altering the magnetic optic, due to the produced magnetic field on a specimen among both groups of coil, which can be quantitatively investigated. The magnetic field uniformity among both groups was also investigated three-dimensionally. The magnetic generator contained of auxiliary coil, is reversed for each group and integrated toward a ferromagnetic material as the core for the magnetic induction amplification. The supplied current was set for up to 10A and produced 0.1T. This can be monitored by microcontroller-computer communication protocol. The produced magnetic generator is going to be applied for another research to produce magnetic field for an instrument of Faraday rotation. This study produced a transfer function B vs. I with B = 98.2650 I + 18.2732.","PeriodicalId":376274,"journal":{"name":"PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132640966","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}

{"title":"Knee osteoarthritis classification using support vector machine AdaBoost and decision tree AdaBoost","authors":"Zuherman Rustam, J. Pandelaki, D. A. Kusuma","doi":"10.1063/1.5132476","DOIUrl":"https://doi.org/10.1063/1.5132476","url":null,"abstract":"","PeriodicalId":376274,"journal":{"name":"PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131424879","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}