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All Journal Bimbingan dan Konseling JURNAL EKSAKTA PENDIDIKAN (JEP) JURNAL PENDIDIKAN TAMBUSAI Jurnal Dedikasi Pendidikan Pelita Eksakta FOSTER: Journal of English Language Teaching Wahana Dedikasi : Jurnal PkM Ilmu Kependidikan FARABI: Jurnal Matematika dan Pendidikan Matematika An-Nuha : Jurnal Pendidikan Islam Jurnal Nasional Holistic Science MATHunesa: Jurnal Ilmiah Matematika Journal of Mathematics UNP Rangkiang Mathematics Journal Mathematical Journal of Modelling and Forecasting
Helma Helma
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Other

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Optimasi Penjadwalan Produksi Sanjai Menggunakan Algoritma Campbell Dudek Smith Sari, Lusi Febrina; Helma, Helma
Journal of Mathematics UNP Vol 8, No 4 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i4.15366

Abstract

scheduling is an important component in planning deals with time management for all activities required in the process of making goods or services. Production scheduling is a tool used to determine the time period used in each working day during the production process. through the use of the Campbell Dudek Smith algorithm, this research aims to obtain satisfactory production result, namely achieving the minimum total work time so as to solve the the problem of product delivery delays at the Kerupuk Sanjai Nitta business. The Campbell Dudek Smith algorithm can determine the best scheduling order by prioritizing jobs with the least production processing time in the production process. This algorithm, which is an extension of Johnson’s algorithm, produces  iterations for alternative work schedule sequences. The results show that the best result optimal scheduling is obtained from the fifth iteration with takes a total time of  hours, so that Sanjai Nitta’s business can complete the production process earlier and save  hours of work time.
Fuzzy Service Quality dalam Analisis Kepuasan Pengunjung terhadap Kualitas Pelayanan Objek Wisata Kapalo Banda Dipinta, Yona; Helma, Helma
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13842

Abstract

Kapalo Banda is one of the tourist attractions located in Fifty Cities Regency. The research conducted in Kapalo Banda is related to visitor satisfaction for the elements of the services provided by applying the fuzzy service quality method. Fuzzy service quality is a combination of service quality methods and fuzzy logic. The service quality method can measure service quality based on five dimensions, namely: physical evidence (tangible), reliability (reliability), responsiveness (responsiveness), assurance (assurance), empathy (emphaty). Based on the results of this study, it was found that visitors were not satisfied with the services they received. This is because there are five positive gap values and ten negative gap values. Therefore, it is necessary to make improvements. The attribute that is used as a reference for improvement is the one with the highest negative gap value.
Upaya Pengendalian Persediaan Bahan Baku pada Pabrik Tahu NTB Menggunakan Metode Material Requirement Planning Thamrin, Revi Reskya; Helma, Helma
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.15034

Abstract

Getting maximum profit is the main goal of every company. To achieve this goal, it is important for companies to control raw material inventories. The NTB Tofu Factory is a factory engaged in food production. The number of requests at the NTB Factory is uncertain which can make the amount of supply exceed or less than demand. So that research will be carried out to control the supply of raw materials and find out the total inventory cost using the Material Requirement Planning method. The lot sizing used are the Lot for Lot technique and the Economic Order Quantity. This research is applied research. This study obtained the results that the most effective technique to apply is the lot for Lot technique because it has the minimum cost. For soybean, a total inventory cost of ???????? 1.200.000 is obtained which can save costs of 66,7%. As for flour raw materials, the total inventory cost value was ???????? 360.000 which could save costs of 59,3%.
Model Matematika Pencegahan Penyebaran Kebiasaan Merokok dengan Penerapan Terapi Pengganti Nikotin Ismed, Seroja; Helma, Helma
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13831

Abstract

Cigarettes are one of the addictive tobacco products because they contain nicotine, which is transmitted between smokers and non-smokers. Prevention is done by not making contact with smokers and giving one type of nicotine replacement therapy. The purpose of this study was to find out the form of the spread of smoking habits that occurs among the community when given nicotine replacement therapy as an effort to prevent this spread. The method in this research is literature. The results of the analysis show that the smoking free fixed point  always exists. If  then the smoking habit free fixed point is asymptotically stable. The smoking habit endemic fixed point  will exist if it fulfills several conditions. Under certain conditions, the endemic fixed point is asymptotically stable and the smoking free fixed point is unstable so that smoking will endemic in the population
Penerapan Metode Modified Distribution dengan Metode Vogel’s Approximation Sebagai Solusi Awal Pada Optimasi Biaya Transportasi UD Salim Abadi Lampung Cahyanti, Alfiana; Helma, Helma
Journal of Mathematics UNP Vol 9, No 2 (2024): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v9i2.12520

Abstract

Transportation problems are common issues faced by companies in the goods delivery process. UD Salim Abadi Lampung is a company engaged in marketing agricultural products. The company operates three central warehouses and seven branch warehouses, with annual transportation costs amounting to Rp. 357,184,000. The purpose of this research is to determine the optimal transportation cost, develop a transportation model, and ascertain the quantity of supplied goods. The method used is the Modified Distribution (MODI) method, with Vogel’s Approximation Method (VAM) as the initial solution. Both methods are part of the transportation method used to solve transportation problems. In this research, using VAM as an initial solution resulted in a cost of Rp. 343,334,786.5, while the MODI method, used for the optimal solution, resulted in a cost of Rp. 327,066,161.4. Therefore, based on the optimal solution, UD Salim Abadi Lampung can save Rp. 30,117,838.60 in annual transportation costs for distributing goods.Keyword : Transportation Cost Optimization, Transportation Method, Vogel’s Approximation Method, Modified Distribution Method
Pengendalian Persediaan Bahan Baku Keripik Balado Salsabila Menggunakan Metode Silver Meal Heuristic Adinda, Viola; Helma, Helma
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.15083

Abstract

Inventory is a factor that decides the smoothness of production and sales so inventory must be controlled to produce minimum costs. The problems that occur in the Keripik Balado Salsabila Business are the use of erratically raw material supplies and the absence of raw material control, so a method is needed to deal with these issues. The research purpose is to compare the total inventory of raw materials between company policies and the method of Silver Meal Heuristic. The benefits of this method are to control inventory and reduce inventory costs. In controlling inventory, the data that is calculated is the five main raw materials for Keripik Balado, including cassava, oil, chili, salt, sugar and lime. The results obtained using the Silver Meal Heuristic method indicated savings in raw material inventory costs of IDR3.829.000 with a total efficiency of 16%. Thus, the method of Silver Meal Heuristic is better to use because it produces a smaller total inventory cost compared to company policy.
Faktor-Faktor Yang Mempengaruhi Angka Gizi Buruk Pada Balita Di Sumatera Barat Menggunakan Metode All Possible Regression Dari Regresi Linier Putri, Nurlailatika; Helma, Helma
Journal of Mathematics UNP Vol 8, No 4 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i4.14919

Abstract

Currently in Indonesia., health problems are in the spotlight is the high mortality rate in children aged 0-59 month. This problem is caused by malnutrition thar occurs in children in this age group. Solving the problem of malnutrition is a serious challenge in West Sumatra Province which is influenced by various factors that play a role in the problem. This research aims to .determine what are the causes of malnutrition in the West Sumatra region. The approach used is the All Possible Regression method of linear regression, taking into account .factors such as toddlers with low birth weight (x1), exclusive breastfeeding (x2), vitamin A suplemetation (x3), and antenatal visits to pregnant women (x4). According to the research results, a multiple linear regression model has been obtained to identify factors that have an influence on malnutrition rates in toddlesr  in West Sumatra as follows: y = 3,95 - 0,0406 x4So, antenatal visits to pregnant women (x4) have a significant effect on the incidence malnutrition in toddlers in West Sumatra with a level of error 5%.
Faktor-Faktor yang Mempengaruhi Balita Stunting di Puskesmas Kampung Guci Menggunakan Regresi Probit Biner Pratama, Lisya; Helma, Helma
Journal of Mathematics UNP Vol 9, No 1 (2024): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v9i1.15374

Abstract

A toodler who is stunted will be shorter than a typical toddler in both height and length. Stunting result in pathological alterations marked by growth that are outside of what is expected, having both short and long term effects. Utilizing binary probit regression, this research attempts to determine the srtucture of the model, the variables that have the highest probability of stunting, and the causes (factors) that cause toodler stunting in Puskesmas Kampung Guci. This research is applied research. This research uses primary data from a sample of 85 toddlers using the accidental sampling technique. According to research findings, exclusive breastfeeding, immunization, healthy latrines, and comorbidities are the variables (factors) that effect toddler stunting at the Puskesmas Kampung Guci.
Peramalan Jumlah Produksi Bawang Merah Provinsi Sumatera Barat Menggunakan Metode Triple Exponential Smoothing Tipe Brown Rahmadani, Suci; Helma, Helma
Journal of Mathematics UNP Vol 8, No 4 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i4.15339

Abstract

Onion (Allium Ascalonicum L) is an important food ingredient that is widely used by the community and has a high market value. The increase in population in West Sumatra province every year has an impact on the need for onion. The amount of onion consumption is greater than the amount of production which causes unmet community needs for onion. This study aims to model onion production forecasts using the Brown Type Triple Exponential Smoothing technique and estimate onion production in West Sumatra province from  based on the model that has been obtained. The smoothing parameter is , which is used in the quantitative forecasting process known as the Brown Type Triple Exponential Smoothing technique. After the data is analyzed and processed, it can be concluded that the results of the onion production forecast for 2023 to 2027 are 242.872,32 ton, 275.231,24 ton, 309.726 ton, 346.356,60 ton and 385.123,04 ton respectively. 
Analisis Pengukuran Kinerja Portofolio Optimal Pada Indeks LQ-45 dengan Model Korelasi Konstan Putri, Riris Frishania; Helma, Helma
Journal of Mathematics UNP Vol 8, No 4 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i4.14505

Abstract

An investment is putting in funds with the goal that it will generate a result in the future. In making investment decisions, investors are inseperable from the consideration of return-risk. The higher return from investors then making the higher risk that will be faced. Therefore, to minimized risk and maximized return, it is necessary to do portfolio analysis. The purpose research is to create an optimal portfolio and measure of performance of the optimal portfolio on LQ-45 index stocks. The results obtained indicate that portfolio A is the optimal of portfolio. The proportion of stocks included in the optimal portfolio are ITMG (68.2%) and MEDC (31.8%) with the expected return from optimal portfolio being 0.33% while the risk is 0.0229. Measuring the performance of each portfolio in a row is portfolio A of 0.093, portfolio B of 0.031, and portfolio C of 0.067. Performance measurement analysis on the optimal portfolio shows that portfolio A has superior performance compared to other portfolios.
Co-Authors Adinda, Viola Ahmad Zaini Alfaiz Alfaiz Amelja, Vania Anak Agung Dewi Megawati, Anak Agung Dewi Anggraini, Nova Annisa Hidayatul Nufus Atikah, Asyrof Atus Amadi Putra Bertha Ivhone Bobby Guslianda Cahyanti, Alfiana Chandra, Yasrial Cindi Meidisia Darajat, Reekha Aysi Destia, Atika Dewi Murni Dipinta, Yona Edizon Edizon Edizon, Edizon Fikri, Ariful Fitria Kasih Franata, Riyan Fuadillah Putra Handaru, Siti Mico I Made Arnawa Inshanul Fadhila Ismed, Seroja Jamhari Jamhari Jufriadi Jufriadi, Jufriadi Kemala, Niken Khairani, Yasyfin Ikrima Khatimah, Havifah Husnatul Ledy Vanesa Maiyuniati Maiyuniati Mirna Mirna Mirna Mirna Mori Dianto, Mori Muhamad Azis Firdaus Muhammad Agus Muljanto Nonong Amalita Nora Dwi Putri, Besti Pertika Putri, Resa Pratama, Lisya Putri, Mona Yulia Putri, Nurlailatika Putri, Riris Frishania Rahma Wira Nita Rahmat Mulyana Dali Rara Sandhy Winanda Rengga Satria Rici Kardo, Rici Riry Sriningsih Roza Lanofita Sandriani, Fifi Sari Fitri Sari, Lusi Febrina Sari, Shinta Sujantri Wahyuni Tatis Febri Heni Thamrin, Revi Reskya WahyunitaWahyunita Warni Warni Wijaya, Arbi Yanata, Dwiki Dzakwan Yerizon Yerizon Yusmet Rizal