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All Journal Jurnal Matematika Buletin Udayana Mengabdi Prosiding Seminar Nasional MIPA BAREKENG: Jurnal Ilmu Matematika dan Terapan JTAM (Jurnal Teori dan Aplikasi Matematika)
G. K. GANDHIADI
Faculty Of Mathematics And Natural Science, Udayana University
Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Mathematics Mechanical Engineering Physics Transportation

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Journal : Jurnal Matematika

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Model Struktural Faktor-Faktor Berpengaruh Terhadap Kinerja Badan Usaha Milik Desa di Kabupaten Jembrana, Bali G K Gandhiadi; I Putu Eka N Kencana
Jurnal Matematika Vol 10 No 1 (2020)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2020.v10.i01.p118

Abstract

One of the efforts to develop the rural economy is the establishment of economic institutions such as Village-Owned Enterprises (BUMDes) which are supported by the role of the local government and are based on the wishes of the village community. This BUMDes is expected to be able to increase market demand based on proper management of the existing village potential. Through cooperative behavior (social capital), synergy and a good entrepreneurial orientation in BUMDes managers and the positive role of the government it is hoped that there will be an increase in BUMDes business performance in Jembrana Regency. The purpose of this study is to comprehensively analyze the role of government and social capital of business managers through entrepreneurial orientation towards BUMDes business performance in Jembrana Regency. The basis of multivariate analysis used is Structural Equation Modeling (SEM). Through a research sample of 90 respondents from BUMDes managers in Jembrana Regency, the results are obtained: (1) social capital and the role of government directly have a positive but not significant effect on business performance, while entrepreneurial orientation has a positive and significant effect on business performance, and (2) social capital and the role of the government in a total positive and significant effect and require full mediation (full mediation) through entrepreneurial orientation to the business performance of BUMDes in Jembrana Regency, Bali.
Optimalisasi Harga Penjualan Perumahan dengan Metode Goal Programming (Studi Kasus: Golden Gindi Residence Kota Bima Nusa Tenggara Barat) Lilik Ika Rahmawati; G. K. Gandhiadi; Ni Made Asih
Jurnal Matematika Vol 3 No 2 (2013)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2013.v03.i02.p38

Abstract

This research aims to determine the minimum selling price of each type of house using the method of goal programming, so that the developer  get profit  in appropriate with the targets set. Goal Programming method is one of the method of solving linear programming to solve the problems that include multiple targets. The result of the research showed: (1) the minimum salling price type of house 36/150 is Rp. 56.371.450,-; (2) type 45/150 is Rp. 77.261.250,-; (3) type 52/150 is Rp. 84.221.445,56. To calculate monthly installment purchase of a home within 5 years and 10 years using Capital Recovery Factor (CRF) method with annual interest of 11.5%. In order to obtain the amount of monthly loan installments within 5 years with 60 time installments for the type 36/150 is Rp. 930.250 , type 45/150 is Rp. 1.275.000 and type 52/150 is Rp. 1.389.800. By using the same method obtained the amount of monthly installments within 10 years with 120 installments for the type 36/150 is Rp. 549.900, type 45/150 is Rp. 815.300 and type 52/150 is Rp. 888.800 . Optimal selling price obtained was lower than the selling price from the developer, so the developer need to consider again the results obtained for the salling price of homes. The calculation of credit installments depending on the amount of interest and repayment period, so not become burden for the customers.
Perancangan Kontrol Optimal pada Model Matematika Bioekonomik G.K. Gandhiadi
Jurnal Matematika Vol 4 No 1 (2014)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2014.v04.i01.p43

Abstract

This paper shows the initial research about the design of optimal investment policy of the public company in resource conservation, by using optimal control model. The mathematical bioeconomics model in using of mathematical modeling for resource conservation is a dynamics problem. The successfull of resource conservation management must fully take account of the time dimension for sustained equilibrium bioeconomics.  The design of a dynamic optimization model is solved  by optimal control strategy via maximum principle Pontryagin of Hamiltonian expressi. We have the conclusion that the optimization of present value for resource conservation very dependent of time domain, how long stock optimal can be sustained  for is given initial stock.
Identification of Internal Factor Affecting Tourism Business Performance in Jembrana Regency of Bali G K Gandhiadi; Eka N Kencana
Jurnal Matematika Vol 9 No 1 (2019)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2019.v09.i01.p110

Abstract

Abstract : The tourism industry in Jembarana Regency of Bali is currently still hobbling. His contribution to the Jembrana Regional budget is still very minimal. Indeed accessibility to tourist destinations in Jembrana is often an obstacle for tourists, but internal factors that affect the performance of Jembrana tourism businesses are very important to be studied and analyzed, especially for tourism businesses actors and the role of government of the Jembrana Regency. Internal factors in tourism business are strongly influenced by the capacity of social capital, entrepreneurial culture of tourism actors and the role of the government in the development of tourism business. Based on a survey and structured interviews on 75 tourism entrepreneurs in Jembrana Regency of Bali, modeling by SEM-PLS with the help of Smart PLS 3.0 software, the results obtained are: (1) structural equation model has met the appropriate qualifications, the measurement model obtained is valid and reliable, while the structural model is quite good, (2) the performance of tourism businesses in Jembrana Regency is positively and significantly influenced by orientation entrepreneurship and the role of government but insignificant influence on social capital, and (3) internal factors that affect the performance of tourism businesses in Jembrana Regency of Bali; sequentially are: entrepreneurial orientation of business people, the role of government in tourism development, and finally the capacity of social capital owned by tourism entrepreneurs. Key Words: Social Capital, Entrepreneurial Orientation, Role of Government, Tourism Business Performance
Optimalisasi Harga Penjualan Perumahan dengan Metode Goal Programming (Studi Kasus: Golden Gindi Residence Kota Bima Nusa Tenggara Barat) Lilik Ika Rahmawati; G. K. Gandhiadi; Ni Made Asih
Jurnal Matematika Vol 3 No 2 (2013)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aims to determine the minimum selling price of each type of house using the method of goal programming, so that the developer  get profit  in appropriate with the targets set. Goal Programming method is one of the method of solving linear programming to solve the problems that include multiple targets. The result of the research showed: (1) the minimum salling price type of house 36/150 is Rp. 56.371.450,-; (2) type 45/150 is Rp. 77.261.250,-; (3) type 52/150 is Rp. 84.221.445,56. To calculate monthly installment purchase of a home within 5 years and 10 years using Capital Recovery Factor (CRF) method with annual interest of 11.5%. In order to obtain the amount of monthly loan installments within 5 years with 60 time installments for the type 36/150 is Rp. 930.250 , type 45/150 is Rp. 1.275.000 and type 52/150 is Rp. 1.389.800. By using the same method obtained the amount of monthly installments within 10 years with 120 installments for the type 36/150 is Rp. 549.900, type 45/150 is Rp. 815.300 and type 52/150 is Rp. 888.800 . Optimal selling price obtained was lower than the selling price from the developer, so the developer need to consider again the results obtained for the salling price of homes. The calculation of credit installments depending on the amount of interest and repayment period, so not become burden for the customers.
Penentuan Lokasi SMP Baru di Kabupaten Klungkung dengan Algoritma Fuzzy Subtractive Clustering I Gede Oka Artawan; G.K. Gandhiadi; Tjokorda Bagus Oka
Jurnal Matematika Vol 3 No 2 (2013)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2013.v03.i02.p36

Abstract

The aim of this paper is to determine a new location of junior high school at Klungkung, using Fuzzy Subtractive Clustering Algorithm. The new location of the junior high school is depending on the graduate number of elementary school, the distance between location of candidates, and distance between the candidates’ location and existing junior high school. To measure the distance, it is used an Euclidean distance. At the beginning of calculation, the locations of elementary schools are used as the location candidates. Then, the density value of each location candidates is calculated using Fuzzy Subtractive Clustering Algorithm. The location candidate which has the highest density will be chosen to become a starting location. The results of calculation show that the location candidate at 8°32'5.70"S, 115°24'20.64"E has the highest density value, it is at SD Negeri 1 Semarapura Kangin. So the location for the new junior high school is at around SD Negeri 1 Semarapura Kangin.
Indikator Kesejahteraan di Provinsi Bali: Suatu Pendekatan Analisis Biplot I Komang Gde Sukarsa; I G K Gandhiadi
Jurnal Matematika Vol 10 No 1 (2020)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2020.v10.i01.p120

Abstract

The goal of this reseach is to get the representation of welfare in Bali province based on the indicators represented by People Development Indexs (PDI). PDI is the indexs is a latent variable that can not be measured like measurement variable, so to measure PDI have to be measure by several indicators. In tgeneral, PDI is measured by three indicators that is a long and Healthy life as the Health Indicators, Education Indicators and decent standard of living as Economic Indicators. In Practice, Health Indicators is measured by mean expectation of life. Mean of long school and expectation of long school are measurement of Education Indicators. Whereas Economic Indicators is represented by purchasing power parity. In Staistics methods, to represent or analize multivariate variable there are many methods can be used. One of the methods is Biplot. In Biplot analysis we can represent information about row matrix and coloum matrix simultaneous. In this cases we can get information about object ( 9 districs or city in Bali) and Welfare Indicators represented by PDIsimultanous. The result of biplot analysis in this research is two dimension graphic that represent Euclid distance of object and correlation of indicators so that we can get information of the grouping of object and the characteristic variables of the certain group.
Geographically Weighted Ridge Regression dalam Kasus Multikolinearitas Pada Indeks Pembangunan Manusia di Kabupaten/Kota Provinsi Jawa Timur Yani Arthayanti; I Gusti Ayu Made Srinadi; G.K. Gandhiadi
Jurnal Matematika Vol 7 No 2 (2017)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2017.v07.i02.p89

Abstract

Linear Regression Analysis is a statistical method for modeling relation between two variable, response and explanatory variable. Geograpically Weighted Regression (GWR) is the development of linier regression analysis if the case of spatial divers case. Local multicollinearity is a condition when explanatory variables had correlated with each observation location. Geograpically Weighted Ridge Regression (GWRR) is a method used to model data containing local multicollinearity on spatial data. GWRR model was developed from ridge regression by adding weight as additional information. The study aims to model spatial data containing local multicollinearity to the Human Development Index (HDI) in the districts/municipalities of eastern Java Province in 2015. The result of this study was indicate that the indicator of the average length of school is a dominant indicator that affects HDI.
Penentuan Lokasi SMP Baru di Kabupaten Klungkung dengan Algoritma Fuzzy Subtractive Clustering I Gede Oka Artawan; G. K. Gandhiadi; Tjokorda Bagus Oka
Jurnal Matematika Vol 3 No 2 (2013)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The aim of this paper is to determine a new location of junior high school at Klungkung, using Fuzzy Subtractive Clustering Algorithm. The new location of the junior high school is depending on the graduate number of elementary school, the distance between location of candidates, and distance between the candidates’ location and existing junior high school. To measure the distance, it is used an Euclidean distance. At the beginning of calculation, the locations of elementary schools are used as the location candidates. Then, the density value of each location candidates is calculated using Fuzzy Subtractive Clustering Algorithm. The location candidate which has the highest density will be chosen to become a starting location. The results of calculation show that the location candidate at 8°32'5.70"S, 115°24'20.64"E has the highest density value, it is at SD Negeri 1 Semarapura Kangin. So the location for the new junior high school is at around SD Negeri 1 Semarapura Kangin.
Peran Pemerintah, Modal Sosial, dan Kinerja Usaha Terhadap Kesejahteraan Subjektif Pelaku Industri Tenun di Kabupaten Jembrana, Bali G.K. Gandhiadi; Komang Dharmawan; I Putu Eka Nila Kencana
Jurnal Matematika Vol 8 No 1 (2018)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2018.v08.i01.p95

Abstract

Weaving industry is one of the creative industries based on local wisdom of Bali, need to be developed with the concept of modern entrepreneurship (orange economy). Regional economic development strategies need to take into account the dynamics of local community life or social capital in addition to the role of government and other physical capital, in order to improve the performance of weaving industry in Jembrana regency, Bali. Based on empirical theory and facts, this study aims to analyze how the direct and indirect influence of the role of government, social capital and business performance on and subjective wellbeing on the business actors of weaving industry in Jembrana, Bali. Through the modeling of the resulting structural equations is studied: (1) the direct influence of the government's role on business performance and subjective well-being; (2) the direct influence of social capital on business performance and subjective wellbeing; (3) the direct impact of business performance on subjective well-being; (4) the indirect and total influence of the government's role on subordinate welfare mediated by business performance; and (5) the indirect and total social capital influences on subjective well-being mediated by business performance. Based on surveys and structured interviews on 70 business actors of weaving industry in Jembrana District, Bali through data analysis techniques using SEM-PLS with the help of Smart PLS 3.0 software, in the business actors weaving industry found that: (1) directly the role of government have positive and significant (2) direct social capital has a positive and significant effect on business performance, but not significant to subjective wellbeing, (3) directly the business performance have a positive and significant effect on subjective wellbeing, (4) the role of the government indirectly has a positive but insignificant effect on subjective wellbeing, but through full mediation of business performance, the role of the government has a positive and significant effect on subjective wellbeing, and (5) social capital indirectly has a positive and significant effect on the subjective achievement, so totally through the full mediation of business performance, social capital has a positive and significant impact on subjective wellbeing although it directly does not have a significant effect.
Co-Authors A. A. I. DWI FIBRIAYORA AA Sudharmawan, AA AGUS EKA ARIESTA AMI HILDA AGUSTIN Desak Putu Eka Nilakusmawati DEWA AYU MADE DWI YANTI PURNAMI Eka N Kencana EKA N. KENCANA EKA N. KENCANA EKA N. KENCANA HANSEN AUDY I Gede Oka Artawan I GEDE WIKAN ADIWIGUNA I GEDE WIRA HADY SAPUTRA I Gusti Ayu Made Srinadi I KADEK MENTIK YUSMANTARA I KADEK SONA DWIGUNA I KETUT RESTU WIRANATA I KOMANG GDE SUKARSA I MADE DWI UDAYANA PUTRA I NYOMAN DICKY WIJAYA I PUTU AGUS DARMAWAN DARMA YADNYA I Putu Eka Nila Kencana I PUTU JERYANA I WAYAN ADITYA NURSANA YADNYA I Wayan Sumarjaya I.K.G. Sukarsa IRA INDRIYANTI JOKO HADI APRIANTO KADEK ANDRIANI DWI PRATIWI KADEK MIRA PITRIYANTI KADEK RISNA WITARI KARTIKA SARI Kencana, Eka N. Ketut Jayanegara Komang Dharmawan KOMANG WAHYUDI SUARDIKA Kurniawan, Rinaldi LAILY A.A. ARIFIANTI Lilik Ika Rahmawati Lilik Ika Rahmawati LUH PUTU IDA HARINI MADE ARISTIAWAN JIWA ATMAJA Made Susilawati MOH. GHISTA KUSUMA SHAFARDA MOH. HERI SETIAWAN N. WIDANA N.M. Asih NATALIE NOVENRODUMETASA NATASHA RANI BORU PURBA SIGUMONRONG NI KADEK JIANTARI NI KADEK SETIAWATI NI KADEK SUMARWATI NI KADEK YUNI DEWIANTARI Ni Ketut Tari Tastrawati Ni Luh Putu Suciptawati Ni Made Asih NI MADE DINDA PRATIWI NI PUTU ANIK MAS RATNASARI PUTU AYU DENI Ratna Sari Widiastuti RENALDO EVIPANIA Tjokorda Bagus Oka TJOKORDA GDE AGUNG FRISKA ADNYANA Yani Arthayanti