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INDONESIA
Jurnal Matematika Sains dan Teknologi
Published by Universitas Terbuka
ISSN : 14111934     EISSN : 24429147     DOI : -
Core Subject : Education, Agriculture,
Agriculture, Biological Sciences & Forestry Mathematics Other
Merupakan media informasi dan komunikasi para praktisi, peneliti, dan akademisi yang berkecimpung dan menaruh minat serta perhatian pada pengembangan Matematika, ilmu pengetahuan dan teknologi. Diterbitkan oleh Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Terbuka.
Arjuna Subject : -
Articles 6 Documents
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Search results for , issue "Vol. 11 No. 2 (2010)" : 6 Documents clear
PENENTUAN BESARNYA ANUITAS HIDUP DENGAN MENGGUNAKAN NILAI ASUMSI PADA DISTRIBUSI SISA USIA Farah Kristiani
Jurnal Matematika Sains dan Teknologi Vol. 11 No. 2 (2010)
Publisher : LPPM Universitas Terbuka

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Abstract

There are two kinds of annuity, annuity certain and life annuity. Annuity certain does not depend on life probability, for example, mortgage. Life annuity depends on time until death and life probability, for example, pension payment from insurance company. The objective of this paper is to discuss further about life annuity and the relationship with life probability that is influences by time until death and the assumption of interest which is used. Time until death (T) is a random variable, because it is unpredictable. To determine the value of distribution, assumption values on tqx will be used. These values are generated by T simulation which depends on Uniform distribution (0,1) random values. A few cases of determining life annuity using tpx distribution values by T simulation will be discussed.
TINGKAT EFISIENSI PENAKSIR M TERHADAP PENAKSIR LMS DALAM MENAKSIR KOEFISIEN GARIS REGRESI Harmi Sugiarti; Andi Megawarni
Jurnal Matematika Sains dan Teknologi Vol. 11 No. 2 (2010)
Publisher : LPPM Universitas Terbuka

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Abstract

The using of OLS method to estimate the regression coefficients in multiple linear regression model presupposed assumption that there is no outlier in the data. Alternatively, robust regression methods can be used. This paper aims to investigate the efficiency of M method and LMS method to estimate the regression coefficients. Besides application data, simulation data generated by MINITAB and SYSTAT package program were used. The investigation shows the LMS method is more efficient than the M method when there is outlier in the data. Otherwise, the M method is more efficient than the LMS method.
UJI ANATOMI DAN MOLEKULER SANSEVIERIA TRIFASCIATA Whika Febria Dewatisari
Jurnal Matematika Sains dan Teknologi Vol. 11 No. 2 (2010)
Publisher : LPPM Universitas Terbuka

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Abstract

Sansevieria is an ornamental plant which has variation leaves on colour and form. It has unstabilizaton characteristic of genetic. This condition especially happens on species Sansevieria trifasciata. Sansevieria trifasciata which has been expressed to the colour and form of leaves. Variation in isozyme banding pattern knew morpholog variation in species S. trifasciata. The aim of this research looked at difference of anatomycal structure for organs, and any variation in their isozyme banding pattern of S. trifasciata Green tiger, Hahnii medio picta, Green arrow, Golden hahnii, serta Hahnii cream. The approach were used morphology and microscopic observation of surface leaf, stalk, and root organs; isozyme banding pattern used electrophoresis method. The genetic diversity knew from the analyze result of isozyme based on the matric of genetic distance which applied on the shape of dendogram with Hierarchical Cluster Analysis metode average linkage (between groups) program SPSS 14. The results showed that genetic diversity of S. trifasciata Hahnii cream, Green arrow, Hahnii medio picta, Golden hahnii, and Green tiger have been found. Morphology observations, there was a unique character on S. trifasciata Hahnii medio picta,while the microscopic observation on leaves organ, all varieties have the same form, Green arrow has different on stalk cells compared with the others varieties. Root cells of Golden Hahnii and Hahnii cream have same cell. The dendogram resulting from peroxydase data of S. trifasciata was clustered in two groups while S. trifasciata Hahnii medio picta has own character in group. Accordingly the esterase data showing it divided two group, S. trifasciata Golden hahnii has own character.
PENGENDALI POINTER DENGAN GAZE TRACKING MENGGUNAKAN METODE HAAR CLASSIFIER SEBAGAI ALAT BANTU PRESENTASI (EYE POINTER) Edi Satriyanto; Fernando Ardilla; Risa Indah Agustriany Lubis
Jurnal Matematika Sains dan Teknologi Vol. 11 No. 2 (2010)
Publisher : LPPM Universitas Terbuka

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Abstract

The application that builded in this research is a pointer controller using eye movement (eye pointer). This application is one of image processing applications, where the users just have to move their eye to control the computer pointer. This eye pointer is expected able to assist the usage of manual pointer during the presentation. Since the title of this research is using gaze tracking that follow the eye movement, so that is important to detect the center of the pupil. To track the gaze, it is necessary to detect the center of the pupil if the eye image is from the input camera. The gaze tracking is detected using the three-step hierarchy system. First, motion detection, object (eye) detection, and then pupil detection. For motion detection, the used method is identify the movement by dynamic compare the pixel ago by current pixel at t time. The eye region is detected using the Haar-Like Feature Classifier, where the sistem must be trained first to get the cascade classifier that allow the sistem to detect the object in each frame that captured by camera. The center of pupil is detect using integral projection.The final step is mapping the position of center of pupil to the screen of monitor using comparison scale between eye resolution with screen resolution. When detecting the eye gaze on the screen, the information (the distance and angle between eyes and a screen) is necessary to compute pointing coordinates on the screen. In this research, the accuracy of this application is equal to 80% at eye movement with speed 1-2 second. And the optimum mean value is between 5 and 10. The optimum distance of user and the webcam is 40 cm from webcam.
PERAN MASYARAKAT PESISIR DALAM PENERAPAN STRATEGI KONSERVASI SUMBERDAYA LAUT (KASUS DI KELURAHAN PALABUHANRATU, KECAMATAN PALABUHANRATU, KABUPATEN SUKABUMI) Adi Winata; Ernik Yuliana
Jurnal Matematika Sains dan Teknologi Vol. 11 No. 2 (2010)
Publisher : LPPM Universitas Terbuka

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Abstract

This article is objected to measure the coastal communities role in the implementation of marine resource conservation strategies. The population were all coastal communities in Palabuhanratu, Sukabumi. Respondents of 50 people were chosen randomly. Data were collected by using survey method, and were analyzed by Pearson correlation. The results indicated that the level of education of coastal communities was a primary school. Respondents have been working more than 10 years. Those who knew the meaning of the protection and conservation of marine resources was 56%, while 88% of them did not know the meaning of preservation of marine resources. The role of coastal communities in aspects of marine resource protection was low, in the aspects of marine resource conservation was high, and in the preservation of marine resources was low. The characteristics of coastal communities correlated positively with the level of knowledge of coastal communities (0,3 and ? = 0,05). Furthermore, the level of knowledge of coastal communities associated with the role of coastal communities in the implementation of conservation strategies (0,5 and ? = 0,05).
PERSEPSI ANGGOTA TERHADAP PERAN KELOMPOK TANI DALAM MENINGKATKAN KEMAMPUAN PENGUASAAN TEKNOLOGI BUDIDAYA BELIMBING Diarsi Eka Yani
Jurnal Matematika Sains dan Teknologi Vol. 11 No. 2 (2010)
Publisher : LPPM Universitas Terbuka

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Abstract

This research aims are: (1) to identify factors related to the member perception on the role of farmer group; (2) to identify member perception on the role of farmer group related to competencies of farmer group member on the implementation of technology; and (3) to explain the role of agricultural extension workers to improve the ability of members on starfruit cultivation technology. Research uses a survey method, the population were farmer group member on Pasir Putih village, Sawangan district, Depok, with. number of samples were 40 people. The data were analyzed by the Spearman Rank test. Perceptions to the leadership group and group networking related significantly with perceptions of the role of members farmer group as study class. Experience farming management related significantly with perceptions of the farmer group member role as production unit farming management and cooperation vehicle. Farmer member group access by information related significantly with perception of the farmer group member as cooperation vehicle. The involvement of members in group activities related significantly with perceptions of the role of members farmer group as study class. The competencies of group member in skill technology related significantly to the role of group as study class and cooperation vehicle.

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