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All Journal Jurnal Kimia (Journal of Chemistry) Jurnal Matematika Buletin Udayana Mengabdi Bumi Lestari BAREKENG: Jurnal Ilmu Matematika dan Terapan Journal of Fundamental Mathematics and Applications (JFMA) E-Jurnal Matematika
I Nyoman Widana
Prodi Matematika FMIPA Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Mathematics Mechanical Engineering Physics Transportation

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MODEL PENYERAPAN OBAT UNTUK INTERVAL DAN DOSIS BERBEDA I NYOMAN WIDANA
Jurnal Matematika Vol 1 No 1 (2010)
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.2010.v01.i01.p07

Abstract

This article will discuss the accumulated quantity of the drug in the bloodstream of the twoadministered methods of the drug. The first method the drug is administered every 12 hours with adose of 12.5 mg, whereas for the second method the drug is administered every 24 hours with a dose of25 mg. The calculations show that the second method accumulates more drugs in the bloodstream thanthe first method.
STUDI PENINGKATAN PENGETAHUAN GURU MENGENAI SITASI DALAM PENYUSUNAN KARYA TULIS ILMIAH UNTUK MEMINIMALKAN PLAGIARISM K. Sari; D. P. E. Nilakusmawati; N. K. T. Tastrawati; L. G. Astuti; I. N. Widana
Buletin Udayana Mengabdi Vol 16 No 2 (2017)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (176.64 KB)

Abstract

Tujuan kegiatan pengabdian kepada masyarakat ini adalah untuk mengetahui: pengaruh pemberian pelatihan terhadap peningkatan pengetahuan guru mengenai aturan tata cara mensitasi dan plagiarisme.meningkatkan pemahaman guru mengenai tata cara sitasi. Kegiatan dilakukan di SMK Farmasi Bintang Persada Denpasar dan SMK Farmasi Bintang Persada Tabanan, dengan subjek kegiatan adalah guru-guru semua bidang studi pengampu mata pelajaran di kedua sekolah tersebut, dengan rincian 16 orang guru SMK Farmasi Denpasar dan 9 orang guru SMK Farmasi Tabanan. Metode yang digunakan adalah metode one group pretest-posttest Instrumen yag digunakan dalam kegiatan ini adalah soal pre-test dan post-test. Sebagai hasil dari kegiatan ini diperoleh terdapat peningkatan yang signifikan mengenai pengetahuan guru-guru tentang aturan tata cara mensitasi dan plagiarisme setelah diberikan pelatihan
EFFORTS PERFORMED BY HOTELS IN BALI IN LOOKING AFTER THE ENVIRONMENT A.A.G. Raka Dalem; I.N. Widana; I.N. Simpen; I.N. Artawan
Bumi Lestari Journal of Environment Vol 10 No 1 (2010)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

A study on “Efforts perpormed by hotels in Bali in looking after the environment” was undertaken in 2009, by utilising data from July, 2008 until June, 2009. Objectives of the study was for collecting data on any efforts undertaken by hotels in looking after the environment especially related to minimising water consumption, garbage handling, the use of chemicals (especially cleaning chemicals), minimising energy consumption and ecosystem conservation (measured from the proportion of natural vegetation). Data were collected from interviews, document checkings and distributing questionaires. Results of the study showed that in average water consumption of hotels in Bali was 115 litres / guest night. It was considered low, less than the benchmark of Green Globe/Earthcheck which was 1,300 litres / guest night. The average of energy consumption was 0.322 MJ per guest night, which was still much below the baseline levels / standard of 340 MJ / guest night. In average garbage/waste produced by hotels was 0.0309 litre/guest night. This was also much below the baseline of 6 litres / guest night. The use of biodegradable cleaning chemicals in the hotel was averaged 35% which should be a minimum of 50%. There were 22% only of hotels which used cleaning chemicals that were biodegradable over 50% (over the standard). In average the proportion of natural vegetation in a hotel was 29%. There were 43% of sampled hotels of which their natural vegetation was over the baseline of 33%. Thus, hotels in Bali should improved their performance in looking after the environment, especially dealing with cleaning chemicals and ecosystem conservation. In this regards, they should increase the proportion of the use of biodegradable cleaning chemicals and increase the proportion of land kept with their natural vegetation.
BURUNG SEBAGAI ATRAKSI EKOWISATA DI KAWASAN PARIWISATA UBUD, BALI A.A.G Raka Dalem; I N Widana; I.A Trisna Eka Putri
Bumi Lestari Journal of Environment Vol 14 No 2 (2014)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Research  on “Birds as an Ecotour Attraction in Ubud Tourist Resort, Bali” (Burung sebagaiAtraksi Ekowisata di Kawasan Pariwisata Ubud, Bali) was undertaken in 2013. Aims ofthese research were as follows: first, to find out birds observed in Ubud Tourist Resort, Baliand second, to find out their potentials as ecotour attractions.Samples were collected by exploring the study sites and running interview between July andOctober, 2013.  Observation was carried out by using binoculars and number of individualsof birds was counted by using a counter when necessary.  Birds were identified such asthrough direct observation on the species, or through their calling.  Results of observationwere compared with hand boooks, such as Mackinnon (1990) and Mackinnon et al. (1992).Birds data were recorded either on their species and on numbers (relative)/freqency, and theresult was typed in tables.  The data provided such as the status (protected/not), migrantspecies or not, as well as their distribution.  In addition, locations where birds have beenused as a tour attraction (ecotour attraction - bird watching), and how to set up theirproducts were reported.From this research it can be concluded as follows.  In Ubud tourist resort at least 67 birdspecies have been identified, in which 7 (seven) were birds that were restricted theirdistribution in Indonesia, namely:  Halcyon cyanoventris, Alcedo caerulescens, Paddaoryzivora, Prinia familiaris, Treron griseicauda, Dicaeum trochileum, and Gallus varius.In addition, from this reserach it was observed seven species of migrating birds: Hirundorustica, Merops philippinus or M. superciliosus, Accipiter soloensis, Actitis hypoleucos,Tringa glareola, Gallinago stenura, and Apus pacificus.From all birds observed, there were 14 species that were classified as protected species inIndonesia, namely: Sturnus melanopterus, Anhinga melanogaster, Bubulcus ibis, Egrettaalba, Egretta garzatta, Egretta intermedia, Halcyon cyanoventris, Halcyon chloris, Alcedocaerulescens, Haliastur indus, Nectarinia jugularis, Anthreptes malacensis, Rhidipurajavanica, and Accipiter soloensis.Based on data from survey and interview, it was revealed that seven trekking routes wereidentified in which birds were utilised as ecotour attractions or the routes of which have apotential to be developed as ecotour attractions (where birds utilised as their touristattractions in Ubud tourist resort and ajacent areas), such as: (1) Subak Sok Wayah Ubudand its surrounding areas; (2) Melinggih - Subak Kembang Kuning and their surroundingareas; (3) Laplapan, Banjar Sala and their surrounding areas; (4) Kliki (Bangkiang Sidem)and its surrounding areas; (5) Tirta Temple Mas Village and its surrounding areas; (6)Banjar Pande Peliatan Village - Alas Arum temple and their surrounding areas; (7) Petuluand its surrounding areas.Community perceptions on bird conservation and bird based ecotoursim in Ubud touristresort showed that: in general the community believed the need for conservation of birds,and they said that the development of bird based ecotour activities have given benefit for thecommunity, such as providing jobs and source of income for them, even though some constraintsstill need to be overcome, such as trekking trails that have not been perfect, the smell of fecesof birds, and weekness in human resources capability.From statements of stakeholders (community, govenment, industry, and visitors), it can berevealed that the commitment of all is needed in bird conservation, because they becomeimportant part of nature, in the sustainability of nature or ecosystem. The media for meetingand discussing for development of birds based tourism activities especially bird watching inUbud tourist resort need to be improved.Limitation in time may caused incompleteness of the bird data collected on this research. Asa result, a longer time in research is recommended. In addition, other studies or research arealso needed to get more data, the data of whcih their availability are still very limited.  Forexample, research on bird habitats are also need to be undertaken.
FROZEN INITIAL LIABILITY METHOD TO DETERMINE NORMAL COST OF PENSION FUND WITH VASICEK INTEREST RATE MODEL Sulma, Sulma; Rasyid, Nur Ahniyanti; Widana, I Nyoman
Journal of Fundamental Mathematics and Applications (JFMA) Vol 6, No 2 (2023)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jfma.v6i2.20150

Abstract

Civil servants have an important role in national development, so increasing their productivity is needed. The pension fund program is given as a form of effort by government agencies to ensure employee welfare when entering retirement. This research discusses the normal cost of the defined benefit pension program using one of the actuarial valuation methods, namely Frozen Initial Liability (FIL), by taking into account the stochastic interest rate following the Vasicek model. The data used in this study are lecturers majoring in MIPA, Faculty of Science and Technology, Universitas Jambi, consisting of 8 people of female gender with the status of being a participant since 2022. Based on the calculation results obtained that in the period 0-30 years, the normal cost for each group member is constant, namely  per year or  per month. When the working period entered 31 years, one by one the participants began to enter their retirement period, which resulted in a change in the normal cost value. At 38 years of service, there was only one participant with a normal cost of  per year or by  per month. Changes in normal cost tend to decrease when retirement program participants also decrease. In the period of more than 38 years, all participants have retired so that normal cost payments are stopped.
Penerapan Metode Zillmer dan Illinois Pada Perhitungan Cadangan Premi Asuransi Jiwa Joint Life Chandra, Veronica Celine; Widana, I Nyoman; Wijayakusuma, IGN Lanang
Jurnal Matematika Vol 13 No 1 (2023)
Publisher : 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.2023.v13.i01.p159

Abstract

Joint life insurance is life insurance whose premium payments end at the first death of one of the insureds. This study aims to calculate the value of premium reserves using the Zillmer and Illinois methods for two insureds with data obtained from PT. Allianz where the insured is 33 and 29 years old with a protection period of 15 years, a premium payment period of 10 years. The Zillmer method uses prospective calculations as a basis for calculations that do not depend on the term of the product used, while the Illinois method is part of the prospective method by limiting costs charged to insurance participants with a limit of 20 years of payment. The results of this study are the value of premiums and premium reserves using the Zillmer and Illinois methods in this study are greater than the value of premiums and premium reserves from PT. Allianz. In the first year, the premium reserve value for the Zillmer method is IDR 80.005.964 while for the Illinois method is IDR 62.902.458 where the reserve value for the following year always increases with the reserve value for the Zillmer method being greater than the Illinois method. The premium reserves for the Zillmer and Illinois methods at the end of the year have the same value as the compensation value of IDR 1.130.000.000, which means that the insurance company is ready to provide compensation as much as promised to insurance participants.
Nilai Cadangan Premi Pada Asuransi Kesehatan Individu Dengan Menggunakan Metode New Jersey dan Fackler Damayanti, Ni Kadek Vivin; Widana, I Nyoman; Eka Dwipayana, I Made
Jurnal Matematika Vol 13 No 2 (2023)
Publisher : 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.2023.v13.i02.p165

Abstract

Hospital individual healthcare insurance is a type of insurance that offers health benefits to insurance participants to cover the cost of hospitalization and medical treatment if they get sick. Premiums paid by insurance participants will be managed by the insurance company to fund the health costs of the insured. An insurance company's obligation to pay an amount of money that must be set aside by the insurance company at a later date is called a premium reserve. This research was conducted with the aim of finding out how much the premium reserves for individual health insurance are using the New Jersey and Fackler methods with a coverage period of 25 years assisted by the Indonesian Mortality Table IV. Using Fackler method the results of calculating premium of individual health insurance using Fackler method for participants aged 15th, 36th and 40th respectively and , with a compensation amount of . Besides this, the amount of reserves increased from the first year to the 19th year and decreased from the 20th year to the 25th year. In addition, it should be noted that the reserve value at the end of the t-year calculated using the New Jersey method is always smaller than the reserve value calculated using the Fackler method, for Keywords: Individual Health Insurance, Premium Reserve, New Jersey, Fackler
ANALISIS ASURANSI PENGANGGURAN DENGAN ASUMSI NON-ZERO MORTALITY Widana, I Nyoman; Winada Gautama, I Putu
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 15 No 3 (2021): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (544.123 KB) | DOI: 10.30598/barekengvol15iss3pp575-580

Abstract

Indonesia dengan jumlah penduduk sekitar 267 juta jiwa memiliki angkatan kerja sangat besar. Tetapi jumlah lapangan kerja yang tersedia tidak mampu menyerap semua angkatan kerja ini. Selain itu angka pemutusan hubungan kerja juga relatif masih tinggi. Hal ini membuat pemerintah melontarkan wacana program asuransi pengangguran. Sejauh ini telah dilakukan studi tentang hubungan besar premi dan benefit dari asuransi pengangguran. Tetapi, model yang digunakan dalam perhitungan preminya, dibentuk berdasarkan asumsi zero mortality. Tujuan dari penelitian ini adalah menganalis asuransi pengangguran dengan asumsi non-zero mortality. Metode yang digunakan adalah The Equivalence Principle. Hasil Perhitungan menunjukkan tarif premi untuk non-zero mortality nilainya lebih kecil dari pada tarif premi untuk zero mortality.
COMPARISON OF PROJECTED UNIT CREDIT AND ENTRY AGE NORMAL METHODS IN PENSION FUND VASICEK AND COX-INGERSOLL-ROSS MODELS Sulma, Sulma; Widana, I Nyoman; Toaha, Syamsuddin; Fitria, Ita
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 17 No 4 (2023): BAREKENG: Journal of Mathematics and Its Applications
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol17iss4pp2421-2432

Abstract

The pension program is one of the pension fund's efforts to anticipate the risks that will be experienced by participants in old age. Actuarial calculations help to determine the benefits that participants will receive by considering life chances, interest rates, age when becoming a participant, and normal retirement age. This study aims to determine normal contributions and actuarial liabilities with the Projected Unit Credit and Entry Age Normal methods using stochastic interest rates, namely Vasicek and Cox-Ingersoll-Ross (CIR). The data used in this study are civil servants who work at the Natural Resources Management Office, Bulukumba Regency. The results of the calculation analysis showed that normal cost using the Projected Unit Credit (PUC) method with the Vasicek and Cox-Ingersoll-Ross (CIR) model interest rates increased as the length of service increased, and at the end of the working period the Cox-Ingersoll-Ross (CIR) model interest rate reached Rp14.773.176,- which was higher than Vasicek by Rp3.849.898,-. The results of the calculation of normal cost using the Entry Age Normal (EAN) method with the Vasicek model increase in the period 0-20 years of service, then decrease towards the contribution value at the beginning of the service period of Rp1.499.725,-. At the beginning of the working year, the normal cost using the Entry Age Normal method with the Cox-Ingersoll-Ross (CIR) model interest rate is Rp7.581.593,- then decreases for 24 years of service to Rp5.849.854,- after which it increases again towards the initial contribution value of the working year. The results of the calculation of actuarial liabilities show an increase as the length of service increases, for the Entry Age Normal (EAN) and Projected Unit Credit (PUC) methods with the Cox-Ingersoll-Ross (CIR) interest rate model at the end of the service period, it is found that both are the same value, namely Rp443.195.285,-. By using the Vasicek interest rate model for both methods, the same result is obtained at the end of the service period of Rp115.496.951,-. This shows that the actuarial liabilities for both methods used are affected by interest rates, and the Cox-Ingersoll-Ross (CIR) model is higher than Vasicek
APPLICATION OF THE EQUIVALENCE PRINCIPLE TO THE CALCULATION OF EDUCATION INSURANCE PREMIUMS FOR VILLAGE-OWNED ENTERPRISES (BUMDes) Widana, I Nyoman; Suciptawati, Ni Luh Putu; Sulma, Sulma
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 18 No 4 (2024): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol18iss4pp2555-2562

Abstract

Program Education plays a vital role in improving human resources. But on the other hand, education costs are not cheap. For this reason, people need to prepare education funds from an early age. One way is to take part in an education insurance program. This is a business opportunity that a village-owned enterprise (BUMDes) can run by offering education insurance services to the public. This research aims to develop and use programming software to calculate education insurance premiums offered by BUMDes. The method used is The Equivalence Principle method. Based on the case study, the premium price calculated using software that has been developed is very competitive – below market price, depending on the interest rate and fees charged.
Co-Authors AA Sudharmawan, AA AGUSTINA PAULA THERESIA PUTRI LAHALLO Ahmad Fitri Ahmad Fitri Anak Agung Gde Raka Dalem ANGGIE EZRA JULIANDA HUTAPEA AYU EKA FANNY DEVI Chandra, Veronica Celine Damayanti, Ni Kadek Vivin Desak Nyoman Trisnawati Desak Putu Eka Nilakusmawati DESI KURNIA SARI FARREL WILLIEARDAN FEMY AYU ASTITI Fitria, Ita GEDE SUMENDRA HANNY PANJAITAN I GEDE ARIS JANOVA PUTRA I GEDE BAGUS PASEK SUBADRA I GEDE DICKY ARYA BRAMANTA I GEDE ERY NISCAHYANA I GEDE PUTU MIKI SUKADANA I GUSTI AGUNG GEDE DWIPAYANA I GUSTI AYU KOMANG KUSUMA WARDHANI I Gusti Ayu Made Srinadi I GUSTI AYU MEIGAYONI LESTARI I GUSTI AYU VIDYARA VRAJESHVARI I Made Eka Dwipayana I MADE WAHYU WIGUNA I Nengah Artawan I Nengah Simpen I Putu Eka Nila Kencana I Putu Winada Gautama I WAYAN SANDY BAYU NUGRAHA I Wayan Sumarjaya Ida Ayu Eka Trisna Putri Ida Ayu Gede Widihati JENNE LALI TEWO JULIANTARI JULIANTARI K. Sari Kartika Sari Ketut Jayanegara Komang Dharmawan L. G. Astuti LIA JENITA LUH PUTU IDA HARINI MADE EDI HENDRAWAN MADE PUTRI ARIASIH MIA NUR FATAYATIN NANDA NINGTYAS RAMADHANI UTAMI NI KETUT AYU MURNIASIH Ni Ketut Tari Tastrawati NI KOMANG AYU SEDANA DEWI NI KOMANG SUKANASIH NI LUH DE SISKA SARI DEWI NI LUH PUTU RATNA DEWI NI LUH PUTU RATNA DEWI NI LUH PUTU SRI WAHYUNI Ni Luh Putu Suciptawati NI LUH ROSITA DAMAYANTHI Ni Made Asih Ni Made Puspawati NI PUTU AYU DEWI CAHYANTARI NI PUTU MIRAH PERMATASARI NI WAYAN ASRI PRADNYANI Nur Ahniyanti Rasyid RAIN FERNANDO BANGUN RIZKA AULIA NOVALINDA SANI SAEFULOH SARAH VERONICA HUTABALIAN SISILIA MARTINA UTAMI AGUSTINI Sulma, Sulma SUNDANIS AGUNG PERTIWI syamsuddin Toaha Tjokorda Bagus Oka TRI YANA BHUANA ULFA DIANITA VALERIA TRISNA YUNITA VIKY AMELIAH Wijayakusuma, I Gusti Ngurah Lanang WIMAS ASTARI YUDA Winada Gautama, I Putu YOGI PRADIPTA YOHANES BAMBANG SUGIARTO