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All Journal Journal of Dentistry Indonesia International Journal of Supply Chain Management Padjadjaran Journal of Dental Researchers and Students International Journal of Global Operations Research Jurnal Matematika Integratif
Supian, Sudradjat
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Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Transportation

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Association between Direction Patterns of Palatal Rugae and Thumbprints: Implications for Forensic Identification Setiadi, Desyani; Syukriani, Yoni Fuadah; Supian, Sudradjat; Oscandar, Fahmi; Malinda, Yuti; Nugraha, Alhana
Journal of Dentistry Indonesia Vol. 26, No. 1
Publisher : UI Scholars Hub

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Abstract

Palatal rugae have been proven to be useful as a means of individual identification. As there are no antemortem data about palatal rugae, they have to be connected with other indicators, such as fingerprints with available antemortem data. Objectives: To assess the association of the direction patterns of palatal rugae prints and thumbprints in the Deutero-Malay sub-race to improve forensic identification. Methods: Palatal rugae intraoral photos and thumbprints scans were from 193 Deutero-Malay individuals aged between 18–25 years (170 female, 23 male). ImageJ and Adobe software was used to identify direction patterns of the palatal rugae and thumbprints. Results: An antero-posterior direction was the most common direction pattern among right (64.17%) and left (49.26%) palatal rugae and right (58.12%) and left (56.02%) thumbprints. An association with small effect size was found between first right palatal rugae and right thumbprint (p-value = 0.024; Cramer’s V = 0.181) and with medium effect size between second left palatal rugae and left thumbprint (p-value = 0.000; Cramer’s V = 0.332). Conclusion: There is a significant association between the direction patterns of palatal rugae and thumbprints. This finding may lead to the development of a new effective technique in forensic odontology identification.
Potensi pola bentuk rugae palatina dan sidik jari telunjuk sebagai sarana identifikasi forensik pada sub ras Deutro Melayu: studi cross-sectional Kancana, Sildha Pura; Shalihah, Desyani; Malinda, Yuti; Zakiawati, Dewi; Supian, Sudradjat; Oscandar, Fahmi
Padjadjaran Journal of Dental Researchers and Students Vol 7, No 2 (2023): Juni 2023
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjdrs.v7i2.41920

Abstract

ABSTRAKPendahuluan: Rugae palatina dan sidik jari memiliki pola khas setiap individu dan terbukti bisa digunakan sebagai penunjang identifikasi forensik. Proses identifikasi sidik jari bisa sulit dilakukan apabila data postmortem rusak. Rugae palatina memiliki data postmortem yang stabil dan akurat namun belum tersedia data antemortem. Tujuan penelitian ini untuk menganalisis potensi pola bentuk rugae palatina dan sidik jari sebagai sarana identifikasi forensik. Metode: Jenis penelitian dilakukan secara analitis korelasional pada 191 orang subras Deutero Melayu berusia 18-25 tahun. Sampel sidik jari telunjuk diambil menggunakan alat sensor FM200 dan software Zsoft Attendance. Sidik rugae palatina diperoleh menggunakan foto oklusal dengan kamera DSLR 70D. Pola bentuk keduanya dianalisis menggunakan aplikasi ImageJ. Hasil: Pola bentuk rugae dan sidik jari terbanyak adalah kombinasi pola bentuk rugae palatina. Curve dan pola sidik jari Loop (C-L). Keduanya memiliki karakteristik khas berupa recurving ridge.  Pola bentuk rugae palatina Curve (C) (25,5%) dan pola bentuk sidik Loop (L) (47,5%) pada telunjuk (51%). Berdasarkan analisis statistik, dengan taraf kesalahan 5% terdapat hubungan yang signifikan antara rugae ke-1 kanan dan telunjuk kanan (p=0,0004), rugae ke-1 kiri dengan telunjuk kanan (p=0,005), rugae ke-2 kiri dengan telunjuk kanan (p=0,0092) serta rugae ke-1 kanan dengan telunjuk kiri (p=0,033). Simpulan: Terdapat hubungan antara pola bentuk sidik jari telunjuk dengan pola bentuk rugae palatina. Temuan ini dapat menjadi acuan pada pengembangan teknik identifikasi forensik odontologKata kunci: ImageJ, forensik odontologi, rugae palatina, sidik jari.Potential of palatal rugae patterns and  index fingerprint as forensic identification tools in the Deutro-Malay Subrace: cross-sectional studyABSTRACTIntroduction: Palatine rugae and fingerprints have unique pattern for each individual and have been proven to be used to support forensic identification. The fingerprint identification process can be difficult if the postmortem data is damaged. Palatine rugae have stable and accurate postmortem data but antemortem data are not yet available. This study aimed to analyze the potential of palatine rugae pattern and fingerprints as a means of forensic identification. Methods: This research was conducted in a correlational analysis on 191 Deutro-malay sub races aged 18-25 years. Samples of index and Index finger fingerprints were taken using an FM200 sensor and Zsoft Attendance software. Palatine rugae prints were obtained using occlusal photographs from a 70D DSLR camera. The pattern of both shapes was analyzed using the ImageJ application. Results: The most common pattern of rugae and fingerprints is a combination of the pattern of the rugae palatine curve and the pattern of the loop fingerprint (C-L). Both have a distinctive characteristic of recurving ridges. The pattern of the palatine rugae curve (C) was (25.5%) and the pattern of the Loop print (L) was (51%) on the index finger. Based on statistical analysis, with an error rate of 5%, there was a significant relationship between the 1st right rugae and right index finger (p=0.0004), and right index finger (p=0.005), 2nd left rugae with right index finger (p=0.0092) and 1st right rugae with left index finger (p=0.033). Conclusion: There is a relationship between the pattern of the index and index finger fingerprints with the shape pattern of palatine rugae. These findings can be used as a reference for the development of forensic odontology identification techniques.Keywords: ImageJ, forensic odontology, fingerprints, palatine rugae.
Rice Harvest Failure Risk Analysis Using Extreme Value Theory Based on Weather Index for Agricultural Business Supply Chain Management Riaman, Riaman; Sukono, Sukono; Supian, Sudradjat; Ismail, Noriszura
International Journal of Supply Chain Management Vol 9, No 5 (2020): International Journal of Supply Chain Management (IJSCM)
Publisher : ExcelingTech

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59160/ijscm.v9i5.5345

Abstract

This paper discusses the formulation of a risk model for paddy agricultural insurance in Indonesia. Indonesia as an agricultural country with a tropical climate, where the sun shines throughout its time, farmers can plant crops throughout the season. In particular, rice farming is currently an inseparable part of most agrarian societies in Indonesia, especially in West Java. However, changes in air temperature, weather and annual rainfall, which sometimes changes uncertainly, cause changes in cropping patterns. This weather uncertainty will certainly increase the risk of crop failure. This paper will analyze the effect of climate variables on the risk of crop failure. The climate variables in this analysis consist of temperature, wind speed, maximum temperature, minimum temperature, and rainfall. The method to be developed here is to use the parametric method which will be used as a reference to determine the magnitude of risk, namely generalized pareto distribution and peak over threshold as a threshold. The results obtained that the greatest risk of losses to farmers occurred in November, December, January, February and March with a value of 0.17485. The organization of this paper consists of introduction, methodology, results and discussion, and conclusions.
Forecasting Model of the Effect of Vaccination on the Number of Covid-19 Cases in West Java Province Nazihah, Nazihah; Nahar, Julita; Supian, Sudradjat
International Journal of Global Operations Research Vol. 4 No. 4 (2023): International Journal of Global Operations Research (IJGOR), Nopember 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i4.242

Abstract

COVID-19 adalah virus yang disebabkan oleh SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) dan pertama kali ditemukan di Wuhan, Hubei, China. Selain menggunakan masker dan melakukan social distancing, cara lain untuk mencegah paparan COVID-19 adalah dengan memberikan dosis vaksin COVID-19 lengkap, yang meliputi dosis pertama dan kedua dari vaksin yang sama, serta dosis booster tambahan untuk peningkatan dosis. kekebalan. Vaksinasi adalah suatu proses di dalam tubuh yang membuat seseorang menjadi sangat kebal atau terlindungi dari suatu penyakit, sehingga jika di kemudian hari terinfeksi penyakit tersebut, mereka tidak akan sakit atau hanya mengalami gejala ringan. Tujuan dari penelitian ini adalah membangun model peramalan untuk mengetahui dampak vaksinasi terhadap jumlah kasus COVID-19 di Provinsi Jawa Barat dan memprediksi jumlah kasus COVID-19 di Provinsi Jawa Barat dengan menggunakan metode regresi linier berganda. Data penelitian yang digunakan terdiri dari jumlah kasus COVID-19 dan penerima dosis vaksin pertama, kedua, dan booster dalam kurun waktu 13 Januari 2021 sampai dengan 22 Januari 2023. Data tersebut diperoleh dari situs resmi PT. Diskes Jabar dan Vaksin Kemkes. Hasil uji statistik dengan kadar alpha 5% menunjukkan bahwa diantara vaksin pertama, kedua, dan booster, hanya vaksin pertama dan kedua yang memberikan dampak signifikan, artinya ada pengaruh efektifitas vaksinasi terhadap jumlah kasus COVID-19. kasus di Provinsi Jawa Barat.
Multi-Item Inventory Control Using Economic Order Quantity (EOQ) Model with Safety Stock, Reorder Point, and Maximum Capacity in Retail Business Mubasysyir, Muhammad Hanif; Supian, Sudradjat; Hertini, Elis
International Journal of Global Operations Research Vol. 5 No. 1 (2024): International Journal of Global Operations Research (IJGOR), February 2024
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v5i1.237

Abstract

The presence of retail businesses in Indonesia has many positive impacts on the community, especially in improving the economy. The existence of buying and selling transactions involving suppliers, retailers, and the community as consumers can play a role in improving the national economy. Retail can be called a bridge for suppliers and consumers to meet their needs. The diversity of consumer needs requires retailers to provide a variety of products from many suppliers. Efforts that need to be made by retail businesses in order to minimize costs incurred are by controlling inventory. To prevent excessive expenditure, the inventory control method used is to apply the Economic Order Quantity (EOQ) model. The EOQ model can provide the optimum total inventory cost by adjusting the frequency of orders placed over a period of time. After obtaining the total inventory cost, the calculation of safety stock, reorder point, and maximum capacity can also be applied so that the inventory costs incurred can be minimal.
Inventory Control of Vaccine Products in Pharmaceutical Company Using The Economic Order Quantity Model and Monte Carlo Simulation Rahmadini, Nurhaliza; Supian, Sudradjat; Napitupulu, Herlina
International Journal of Global Operations Research Vol. 4 No. 4 (2023): International Journal of Global Operations Research (IJGOR), Nopember 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i4.257

Abstract

Health is a basic need in human life. People spend a lot of money to maintain their health. One of the preventive health service options is to vaccinate. Indonesia is a country that can produce its own vaccines with its local pharmaceutical companies. The company faces stiff competition in today's rapidly growing market. Therefore, evaluation and assessment are needed to measure the progress of the company's development. One useful assessment is a company's financial review. Inventory control ensures that the planned approach can minimize costs without disrupting the production process. This research simulates data of demand and analyzes the inventory control based on simulated data. The object used in this research is the inventory of products of pharmaceutical companies. The data used is secondary data such as data of product quantity sold per period, purchasing cost, order cost, holding cost, shortage cost, and lead time. The method used for inventory control is Economic Order Quantity (EOQ) model and Monte Carlo simulation. The simulation results on the monthly demand for vaccine products show that the total demand for one year is 3.394.805 vials for Vaccine A, 1.320.900 vials for Vaccine B and 107.345 for Vaccine C. Based on simulated data processing, calculations using the probabilistic EOQ model result in total inventory costs of Rp.456.918.008.386,14 for Vaccine A, Rp 218.292.795.949,34 for Vaccine B, and Rp. 9.177.930.319,05 for Vaccine C.
THE PLANNING FOR UPPER SHOES RAW MATERIAL INVENTORY USING THE MATERIAL REQUIREMENT PLANNING (MRP) METHOD (Case Study : PT X) Apriliza, Poppy; Supian, Sudradjat; Nahar, Julita
International Journal of Global Operations Research Vol. 4 No. 4 (2023): International Journal of Global Operations Research (IJGOR), Nopember 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i4.235

Abstract

The planning of raw material inventory is one of the essential factors in planning the order of the raw materials that can make a company maintain its production quality. The company’s policies can be implemented in various ways, such as in planning the raw materials inventory to avoid shortages and excesses of the raw materials supply. However, X Inc. has not implemented inventory planning properly, making the costs incurred by the company not optimal. Thus, Material Requirement Planning (MRP) will be used to determine the scheduling time and quantity of raw materials for ordering with lot sizing techniques. Lot sizing techniques provide solutions to determine the right quantity of raw material orders and minimum total inventory costs with techniques which are Lot for Lot (LFL), Least Unit Cost (LUC), Economic Order Quantity (EOQ), and Silver-Meal. Based on the calculation results, the four lot sizing techniques show that the LFL technique is the optimal technique compared to other techniques because it produces the minimum inventory cost of Rp566.015.685,05. Thus, the company can profit Rp13.295.563,75 compared to company policy.
Implementation of Jackson Queueing Network in General Polyclinic and Dental Polyclinic Patient Services at Jelekong Health Center Rasyid, Thariq Ahmad; Supian, Sudradjat; Nahar, Julita
International Journal of Global Operations Research Vol. 4 No. 4 (2023): International Journal of Global Operations Research (IJGOR), Nopember 2023
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v4i4.229

Abstract

The buildup in the service system is generally caused because service facilities cannot meet service needs, so service users need time to use the facilities. Health Center is one of the facilities that provide services in the health sector. However, the number of doctors needed in health centers in Indonesia has yet to be met, and the number of patients who are never empty every day causes a buildup in the service system. The application of the service network system using the open Jackson queueing network can model the optimal service system and analyze its performance. The observation method was used to observe patients' arrival and departure times at the Jelekong Health Center, especially in the registration section, general polyclinic, dental polyclinic, and pharmacy, for three days. There was an increase in patient waiting time before being served and time in the system at the general polyclinic after implementation, so one additional service facility was added. Meanwhile, the dental polyclinic experienced decreased patient waiting time before being served and time in the system, so there was no need to add service facilities.
Supply Control Of Oil Filter Spareparts Using EOQ And Min-Max Methods Based On Sales Forecast (Case Study: PT Astra International Tbk Soekarno Hatta) Arfemitha, Nurlia Asih; Supian, Sudradjat; Nahar, Julita
International Journal of Global Operations Research Vol. 5 No. 1 (2024): International Journal of Global Operations Research (IJGOR), February 2024
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v5i1.284

Abstract

Planning and controlling product inventory is very important for a company to ensure demand is met and maximize profits from sales effectively and efficiently. In addition, inventory planning and control are carried out to prevent excess or shortage of inventory. This study aims to predict sales and calculate inventory control to overcome excess stock and increased inventory costs on oil filter spare parts. The forecasting method used is Holt's Double Exponential Smoothing method to determine the number of sales of the four types of oil filter spare parts in the future and overcome the problem of oil filter spare parts inventory using the EOQ and Min-Max methods. Based on the research results, the resulting forecasting is accurate and the EOQ method results in a lower total inventory cost than the Min-Max method.
Pemilihan Operator Seluler Untuk Paket Internet di Kalangan Mahasiswa Universitas Padjadjaran dengan Metode Analytical Hierarchy Process (AHP) Zainurrisalah, Fathulhanif Salman; Supian, Sudradjat; Triska, Anita
Jurnal Matematika Integratif Vol 20, No 2: Oktober 2024
Publisher : Department of Matematics, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jmi.v20.n2.58725.217-232

Abstract

Sejak awal pandemi virus corona pada tahun 2020, Indonesia telah mengalami banyak perubahan dalam pola aktivitas masyarakat. Pembatasan kegiatan tatap muka memaksa banyak orang untuk bekerja, belajar, dan berbelanja dari rumah, yang secara signifikan meningkatkan kebutuhan akan akses internet. Kondisi ini mendorong operator seluler untuk bersaing menawarkan layanan internet yang beragam guna menarik konsumen dengan berbagai karakteristik seperti kualitas jaringan, stabilitas koneksi, kecepatan, dan harga. Adanya berbagai pilihan ini menciptakan kesulitan bagi konsumen dalam menentukan layanan internet yang paling sesuai. Penelitian ini menyajikan metode Analytic Hierarchy Process (AHP) sebagai solusi dalam pemilihan operator seluler untuk paket internet di kalangan mahasiswa Universitas Padjadjaran. Telkomsel, XL Axiata, Indosat Ooredoo, dan Tri diidentifikasi sebagai alternatif dengan kriteria harga, kuota, kecepatan akses internet, dan cakupan sinyal. Data dikumpulkan melalui penyebaran kuesioner kepada mahasiswa beberapa fakultas, yaitu FMIPA, FEB, FKEP, dan FTIP Universitas Padjadjaran sebanyak 281 responden. Hasil penelitian ini menunjukkan bahwa Telkomsel adalah alternatif prioritas dan cakupan sinyal merupakan kriteria utama dalam memilih operator seluler.
Co-Authors Achmad, Audi Anisa Kisti, Vuji Anita Triska Annisa, Diana Apriliza, Poppy Arfemitha, Nurlia Asih Ashgi, Rizky Carinia, Ema Dewi Zakiawati, Dewi Diah Chaerani Eddy Afrianto Elis Hertini Eman Lesmana Fahmi Oscandar, Fahmi Haq, Al Fataa Waliyyul Herlina Napitupulu Julita Nahar, Julita Kancana, Sildha Pura Mahrudinda, Mahrudinda Mubasysyir, Muhammad Hanif Nazihah, Nazihah Nirwa, Nira na Noriszura Ismail Nugraha, Alhana Pratignyo, Lisana Sumarah Rahmadini, Nurhaliza Rasyid, Thariq Ahmad Riaman Riaman, Riaman Ruchjana, Budi Setiadi, Desyani Shalihah, Desyani Sukono . Yoni Fuadah Syukriani Yudi Nurul Ihsan Yuniarti Yuniarti Yuti Malinda Zainurrisalah, Fathulhanif Salman