Abstract:Abstract: This research is a development of previous research, where the results of previous studies have only arrived at the application design stage. Jimmy Fish UMKM is a business that sells fish seeds, while the fish…
seeds that are sold are: catfish, tilapia, goldfish, mujaer fish, catfish, and carp. Jimmy Fish UMKM has several activities to support its business, one of which is determining how much stock of fish fry is needed for each period. Jimmy Fish SMEs have problems in determining the amount of fish seed stock, Jimmy Fish SMEs still use estimates without definite calculations to determine the number of fish seed stocks. As a result of this problem, when someone wants to buy fish seeds, the number of stocks is not fulfilled (less), the number of fish seeds is depleted, and there is even an excess stock of fish seeds (only a few sold), so that activities at Jimmy Fish SMEs become less effective. The solution to the existing problems is to build an e-forecasing application using the wieghted moving average (WMA) method. The e-forecasting application is very important because it can predict the number of fish seed stocks for the next period using calculations from previous data. The e-forecasting application also provides convenience, speed and as a support system for making decisions on how many fish seed stocks must be fulfilled for the next period.
Keywords: applications; e-forecasting; WMA
Abstrak: Penelitian ini merupakan pengembangan dari penelitian sebelumnya, dimana hasil dari penelitian sebelumnya baru sampai pada tahap desain aplikasi. UMKM Jimmy Fish merupakan usaha yang menjual bibit ikan adapun bibit ikan yang dijual yaitu: ikan lele, ikan nila, ikan emas, ikan mujaer, ikan patin, dan ikan gurame. UMKM Jimmy Fish mempunyai beberapa aktifitas untuk mendukung usahanya salah satunya penentuan berapa jumlah stok bibik ikan yang diperlukan untuk setiap periodenya. UMKM Jimmy fish mempunyai permasalahan dalam menentukan jumlah stok bibit ikan, UMKM Jimmy Fish masih menggunakan perkiraan tanpa perhitungan yang pasti untuk menentukan jumlah stok bibit ikan. Akibat yang ditimbulkan dari permasalah tersebut, ketika ada yang ingin membeli bibit ikan jumlah stok tidak terpenuhi (kurang), jumlah stok bibit ikan habis, dan bahkan ada jumlah stok bibit ikan yang berlebih (hanya terjual sedikit), sehingga aktifitas pada UMKM Jimmy Fish menjadi kurang efektif. Solusi dari permasalah yang ada, dengan membangun aplikasi e-forecasing menggunakan metode wieghted moving average (WMA). Aplikasi e-forecasting sangat penting karena dapat prediksikan jumlah stok bibit ikan untuk periode selanjutnya menggunakan perhitungan dari data-data sebelumnya. Aplikasi e-forecasting juga memberikan kemudahan, kecepatan dan sebagai support system pengambilan keputusan berapa jumlah stok bibit ikan yang harus terpenuhi untuk periode selanjutnya.
Kata kunci: aplikasi; e-forecasting; WMA
Abstract:Abstract: PT. Panca Niaga Mandiri is an authorized motorcycle dealer in Sei Piring which is engaged in selling Honda motorcycles both in cash and on credit. Dealer Problems PT. Tunas Dwipa Putra at this time is that there…
e is no definite calculation to predict the motorcycle sales target each month and the problems that occur are that sometimes there is an increase or decrease in motorcycle sales for each month because currently, business competition is very tight so that it makes business people compete with each other in their way. Many strategies have been carried out by marketing for how monthly motorcycle sales continue to increase. Therefore, it is necessary to use a forecasting method to predict sales of Honda motorcycles, especially automatic-type Honda motorcycles. The method used is the Trend Moment method. It is hoped that this method can help predict sales of automatic motorcycles for the next month.
Keywords: honda motorcycle; prediction; sales;
Abstrak: PT. Panca Niaga Mandiri merupakan dealer resmi sepeda motor yang ada di Sei Piring yang bergerak pada penjualan sepeda motor honda baik secara tunai maupun secara kredit. Permasalahan Dealer PT. Tunas Dwipa Putra pada saat ini yaitu tidak adanya perhitungan yang pasti untuk memprediksi target penjualan motor disetiap bulannya dan permasalahan yang terjadi terkadang mengalami kenaikan maupun penurunan penjualan sepeda motor untuk setiap bulannya, Karena saat ini persaingan bisnis sangat ketat sekali sehingga membuat para pelaku bisnis saling bersaing dengan cara mereka sendiri. Banyak strategi yang sudah dilakukan oleh marketing untuk bagaimana penjualan sepeda motor setiap bulanya terus meningkat. Oleh karena itu, maka diperlukan metode peramalan untuk memprediksi penjualan sepeda motor honda khususnya sepeda motor honda type matic. Metode yang digunakan yaitu metode Trend Moment diharapakan metode ini dapat membantu dalam memprediksi penjualan sepeda motor matic untuk bulan kedepannya.
Kata kunci:penjualan; prediksi;sepeda motor honda
Abstract:Abstract: In this paper we discuss the development of computational application program in MATLAB to calculate the second derivative of a function by using finite difference method for various types (forward, backward, or…
r central) and any order of accuracy. The MATLAB program extends the similar one which has been developed for the first derivative. The program is designed as an implementation of the explicit formulas of finite difference formulated by Khan and Ohba. Through this program, one can easily calculate the second derivative of a function numerically with any order of accuracy and visualize it in a graphical form. Error of numerical derivatives in each order of accuracy confirm the validity of the obtained results.
Keywords: finite difference method, explicit formula, second derivative, MATLAB programming
Abstrak: Dalam makalah ini dibahas pengembangan program aplikasi komputasi pada MATLAB untuk menghitung turunan kedua suatu fungsi dengan menggunakan metode beda hingga pada berbagai tipe (maju, mundur, atau pusat) dan sebarang orde ketelitian. Program MATLAB ini melanjutkan program serupa yang telah dibuat untuk turunan pertama. Program ini dirancang sebagai implementasi dari rumus eksplisit beda hingga yang diformulasi oleh Khan dan Ohba. Melalui program ini, seseorang dengan mudah dapat menghitung turunan kedua suatu fungsi secara numerik dengan sebarang orde ketelitian dan memvisualisasinya dalam bentuk grafik. Galat dari turunan numerik di setiap orde ketelitian mengkonfirmasi kevalidan hasil yang diperoleh.
Kata kunci: metode beda hingga, rumus eksplisit, turunan kedua, pemrograman MATLAB
Abstract:This study investigates the stress concentration factor in an infinite steel plate with a thickness of 1 cm, containing an elliptical hole, subjected to biaxial loading at infinity. The elliptical hole has semi-axes a=5.0 cma…
0 cma = 5.0 \, \text{cm}a = 5.0 cm (major axis) and b=2.5 cmb = 2.5 \, \text{cm}b = 2.5 cm (minor axis). The applied stresses at infinity are a tensile stress of σ1=100 kg/cm2\sigma_1 = 100 \, \text{kg/cm}^2= 100 kg/parallel to the major axis and a compressive stress of σ2=−100 kg/cm2\sigma_2 = -100 \, \text{kg/cm}^2= -100 kg/ perpendicular to the major axis. The material properties include Young's modulus E=2.1×106 kg/cm2E = 2.1 \times 10^6 \, \text{kg/cm}^2E = 2,1. kg/ and Poisson's ratioν=0.3\nu = 0.3 = 0.3. Using analytical solutions from classical elasticity theory, the maximum tangential stress at the edge of the ellipse is calculated as σmax=600 kg/cm2\sigma_{\text{max}} = 600 \, \text{kg/cm}^2= -600 kg/, yielding a stress concentration factor of kσ=σmax/σ=6k_\sigma = \sigma_{\text{max}} / \sigma = 6 = =6. Additionally, a finite element (FE) analysis based on the Salerno and Sahoni problem for a quarter section of the plate results in kσ=3.1125k_\sigma = 3.1125 = 3.1125 for a configuration with s/r=5s/r = 5s/r = 5, showing a discrepancy of 1.3% compared to the theoretical value of kσ=3.1k_\sigma = 3.1= 3.1 from Peterson's Stress Concentration Factors. The results demonstrate good agreement between the calculated model and theoretical predictions, validating the accuracy of the FE approach for stress concentration analysis in such configurations.
Abstract:Many mechanical systems with elastic and damping properties are prone to resonant phenomena at natural frequencies under the action of external forces. Resonance phenomena can also be preserved in control systems of such…
objects closed by negative feedback, which reduces the quality of the functioning of these systems. The paper under review deals with the practically important problem of suppressing oscillations at natural frequencies in control systems for a linear oscillator, which is traditionally considered a dynamic object described by a second-order differential equation with complex roots of the characteristic equation. The focus of the work is the question of the roughness of the system in relation to inaccurate knowledge of the resonant frequency of the controlled object (which is typical for many technical applications).
Abstract:Connectivism provides abundant enchanting experiences in ELT context due to the benefits that it offers. However, as the practice requires technology integration, physical, and psychological readiness, teachers discover…
challenges upon the implementation. This study aims at investigating the benefits and challenges of the practice in ELT context. Through content analysis qualitative study, the study attains the targeted exploration. 5 experienced English teachers are selected to conduct semi-structured interviews. The data were analyzed and reviewed by the researchers and experts for affording the valid results. The results provide valuable insights towards the issues that are raised. This study sheds a light on the essence of digital environment in ELT which assists the feasible various sources of learning to be attained. Findings revealed that Connectivism can definitely foster learners’ language skills, such as speaking, listening, and pronunciation through the various digital platforms that are provided. Interestingly, connectivism is advantageous for strengthening learners' 21st century skills, namely critical thinking, collaboration, communication skills, and creativity in learning English. On the other hand, the challenges encountered by teachers in integrating connectivism are 1) inadequate facilities and infrastructure, 2) lack of training and development in educator resources, and 3) low internet network access or the bandwidth.