bluuebunny/crossref_metadata_2025_split huggingface dataset:
The hybrid whale optimization algorithm: A new metaheuristic algorithm for energy-efficient on flow shop with dependent sequence setup
Authors: Utama Dana Marsetiya , Widodo Dian Setiya , Ibrahim Muhammad Faisal , Hidayat Khoirul , Baroto Teguh , Yurifah Aminatul 
Published: July 2020

Abstract
Recently, The industrial sector produces about half of the worlds total energy consumption. Manufacturing companies are required to reduce energy consumption. This article aims to develop a Hybrid Whale Optimization Algorithm (HWOA). We use the objective function of minimizing energy consumption. It solves the problem with permutation flow scheduling problems (PFSSP). Dependent sequence setup is a PFSSP problem with setups that depend on schedule sequence. We offer HWOA with local search strategies. The solution in each HWOA iteration is improved using flip and swap mutations. Furthermore, HWOA is compared with several algorithms. We use numerical experiments to show the performance of the proposed algorithm. Comparative analysis with several algorithms has previously been carried out with ten variations of PFSSP problems. Based on numerical experiments, HWOA proved to be competitive compared to other algorithms.
Risks analysis on digital platforms adoption to elevate SME businesses in developing country
Authors: Andriani Debrina Puspita , Nur Aini Azizah Putri , Anwar Agustinus Alfian , Adnandy Rheza 
Published: July 2020

Abstract
Industry 4.0 is a term for the digital revolution in industrial area appearing from a comprehensive and computerized network. Digital platforms can be an impressive and beneficial media for industry to get closer with the customers. While many big companies have attempted to figure on the potential and risks of digitalization along have introduced an innovation process for their business models, small and medium enterprises (SMEs) have not utilized this optimally. Currently SMEs are known as the bedrock of most economies, especially in developing countries. The aim of this study was to optimize the digital platform that had been developed as SME business media through risk analysis for the sustainability constructing. The SWOT analysis and failure mode and effect analysis (FMEA) approach were used to assess the identified and analysed risks before determining the appropriate mitigation plan. The study expected SMEs to fulfil the challenges and opportunities from Industry 4.0 for elevating national economic stability.
Using System Dynamic Model for Predicting Inventory of Rice Necessity
Authors: Andriansyah A , Rahmi A , Ilyas I 
Published: July 2020

Abstract
Indonesian government has an organization that aims to manage basic necessity nationally, especially for rice commodity. The organization runs in the form of a business entity and has a program making welfare of the poor people by providing rice assistance. There is still over stock and out of stock in inventory while organization distributes this relief. That matter creates unbalance between commodity in inventory and commodity in distribution incurring a large cost. Prediction model using system dynamic in this study was needed to control the inventory and reduce over stock or out of stock. Causal loop diagram was used to describe the relationship between variables in the system and simulation was run with stock and flow diagram. Simulation was done by benchmarking the actual and the simulation results. The model that was built, tested using the Mean Absolute Percentage Error (MAPE). Based on the simulation results, the values of MAPE are below 5%. This indicates that the model can represent the real system and can use to predict variable for the future.
Study on kefir grain concentration and the different length of storage on the physicochemical of goat milk kefir
Authors: Dewi A C , Rahardjo A H D , Setyawardani T , Subagja H 
Published: July 2020

Abstract
This study was about the effect of kefir grain concentration level and the different length of storage, as well as the interaction between kefir grain concentration level and the different length of storage on the fat content, pH and the viscosity of goat milk kefir (GMK). The ingredients used were goat milk from Pegumas farmers group and kefir grains from Perwira kefir. Data was analyzed by using the analysis of variance of 2x4 factorial and continued by Duncan’s new multiple range test. The results showed that kefir grain concentration gave a significant effect (P<0.01) on the fat content, pH and the viscosity of GMK. The different length of storage gave a significant effect (P<0.01) on the fat content, pH and the viscosity of GMK. The interaction had no significant effect (P>0.05) on the fat content and there was an interaction effect (P<0.01) on the pH and viscosity of the GMK. The conclusion of this study was the increase of the concentration level of kefir grain up to 3% resulting on the lowest fat content and pH, and the highest viscosity; and that the length of storage up to 21 days decreases the fat content and pH, but increases the viscosity.
Physicochemical And Sensory Properties Of Pedada Fruit (Sonneratia caseolaris) Bar
Authors: Putra A Y T , Susiloningsih E K B , Susanti M A 
Published: July 2020

Abstract
Food acceptability relates to the interaction food has with the consumer at a given moment in time. Physicochemical and sensory properties of food influence the way consumer select their food. Therefore, the main objectives of this study were to evaluate texture, calories value and sensory properties food bar made with lesser yam, mung bean base with pedada fruit. Eight food bars were produced: G1H1, G1H2, G1H3, G2H1, G2H2, G2H3, G3H1, G3H2, G3H3. Duncan multiple range test were performed with 5% significance for statistical analysis. The highest calorie value and fracture ability are sample G3H3, and G3H1, respectively, but it does not significant (p>0,05). The different composition of mung bean, lesser yam, and pedada fruit do not affect sensory properties. Therefore, in this study, sample evaluate is have similar physicochemical, and sensories properties.
The Causality of Monosodium Glutamate Fourier Transform Infrared (FTIR) Absorbance Pattern with Wave Peaks from Several Seasoning Product (Savoury Flavors)
Authors: Mujianto  , Wignyanto  , Kumalaningsih S , Aulianni’am  , Agriculture  
Published: July 2020

Abstract
This study is aimed to find out the causality of raw materials, food additives and supportive materials used to produce several products of seasoning products available at commercial market and their direct correlation with monosodium glutamate (MSG) as flavor enhancing ingredient. An observation is taken to randomly collect 9 (nine) brands of seasoning (savory flavors) using Fourier Transform Infrared (FTIR) spectroscopy. The results of observation are processed using main component analysis and hierarchical cluster analysis. The results of study show that9 (nine) brands of seasoning (savory flavors) are made from food additives and supportive material which score of eigenvalues is equal to 8.854 or 98.374 of variant and there is a direct causality with synthetic flavor enhancing ingredient (2 MSG variants). Such direct causative direct correlation applies to seasoning with grilled chicken flavor (SF7), seasoning with salted cheese flavor (SF5), seasoning with roasted beef flavor (SF3), seasoning with barbeque flavor (SF9), seasoning with tiramisu flavor (SF6), seasoning with spicy corn flavor (SF10) and monosodium glutamate (MSG) with eigenvalues score is 7.416 or 67.416% of variant. Balado flavored seasoning (SF8), cheese flavored seasoning (SF4), sweet spicy flavored seasoning (SF11) and Chinese flavor enhancing ingredient have direct causality with Chinese flavor enhancing ingredient, which eigenvalues score, is 1.517 or 13.792% of variant. Monosodium glutamate (SF1) and Chinese flavor enhancing ingredient have similarity of eigenvalues score is 1.108 or 10.071% of variant.
Photovoltaic driven adsorption-cooling cycle
Authors: Bagus Wirajati I Gusti Agung , Ardita I Nengah , Suta Waisnawa I Gede Nyoman 
Published: July 2020

Abstract
In this paper, an adsorption cooling system with drive heat sources from solar power through a photovoltaic system will be introduced. The PV system is used to heat the water collected in the storage tank for further use as the main driving force in the adsorption cooling system. The PV system has been tested and produced a voltage of 21 V with a current of 5.7 A. Whereas the research for the adsorption cooling system, it is only at the simulation test stage to determine the minimum heat source temperature that can be used in operation, which is 60 °C. By this research, it can be ascertained that the PV system is very possible to be applied to the adsorption cooling system so that the combination of the application of a technology system that is very environmentally friendly can be realized.
The Effect of Nanofluid Volume Fraction to The Rate of Heat Transfer Convection Nanofluid Water-Al2O3 on Shell and Tube Heat Exchanger
Authors: Arsana I M , Agista D R , Ansori A , Sutjahjo D H , Effendy M 
Published: July 2020

Abstract
Shell and tube heat exchanger is now widely used in the field of industry and technology. In many applications, the working fluid is still a conventional fluid that still has a low thermal conductivity properties. Nanofluid is one of the ways that can be used to increase the thermal conductivity. The purpose of this research is to identify the influence of volume fraction against the heat transfer rate and effectiveness on shell and tube heat exchanger. The material used is Al2O3 with difference fraction volume of 0.5%, 1%, and 1.5% on the cold fluid. The temperature of the fluid used in the heat of 90 ° C . The result of this study shows the highest effectiveness in mixed fraction nanofluid volume of 1.5%, which is 42% with the rate of heat transfer of 7061.93 Watts. Then the lowest effectiveness obtained on the State mixture volume fraction without nanofluid, which is 17.7% with the rate of heat transfer of 5666.71 Watts. Thus it can be concluded that when the fraction of nanofluid is getting higher, then the volume will increase the rate of heat transfer convection as well as the effectiveness of the shell and tube heat exchanger.
Analysis Of Resistance Of Materials That Have Las Connection In St 37 Steels
Authors: Sariman Farid , Wullur Christian Wely , Cipto  , Parenden Daniel 
Published: July 2020

Abstract
This study aims to determine the effect of welding currents on the strength and toughness of SMAW welds with Impact testing. This study uses ST 37 Steel (Medium Carbon Steel), this steel including medium carbon steel. The material is treated with welding with a variation of current 90 Ampere, 110 Ampere, and 130 Ampere using SMAW DC welding, Impact testing is a test to measure the resistance of the material to shock loads. Impact testing simulates material operating conditions that are often encountered where the load does not always occur slowly but comes suddenly. The aim to be achieved in this study is to analyze impact testing for medium Carbon Steel welding position using a flat or down hand welding position, the type of seam used is V with a 90 ° angle. Specimens are tested for impact. Impact test results in the base metal and current variation specimens showed that the highest impact strength values were found in base metal, which was 146 joules and 1,825 joules / mm2, compared with the current variation group of 110 amperes, 130 amperes. The types of fracture that occurred were on the base metal and the 90 Ampere current specimen group was brittle fracture, and the 110 Ampere specimen group and the 130 Ampere specimen group were tenacious fractures.
Analysis of Skid and Rolling Vehicle
Authors: Cipto  , Parenden Daniel , Hariyanto  , Bako Rahap M 
Published: July 2020

Abstract
Daihatsu Taft Hiline is one of the cars that are widely used for out-of-town travel, to improve the performance of the car in the field, modified cars, modifications made namely the elevation of the car body. The elevation of the car results in a shift in the center of gravity, so that the stability of the car changes. Changing the stability of the car results in skid conditions and the condition of the car rolling. Data processing calculations using the Vehicle Dynamics Turn method, where previously performed calculations to get the car data, car height, car weight, and the location of the center of gravity. Then do skid analysis and rolling to find out the vehicle dynamics that occur in the vehicle. The calculation result of the maximum speed allowed so as not to skid is 66.16 Km / h and the maximum speed allowed so as not to roll is 32.21 Km / h.
Effect of Metal Inert Gas Welding Process Parameters to Tensile Strength on ST 37 Steel Sheet Joint
Authors: Muzakki Hakam , Prasetyo Teguh , Syafi’ul Umam M , Lumintu Ida , Hartanto Dwi 
Published: July 2020

Abstract
Welding technology still used in manufacturing industries, however welding process affected to decrease a joint performance. This study discussed about the welding parameters of Metal Inert Gas (MIG) which affected to tensile strength of weld joint. Welding process parameters used in this study such as welding current, welding time, and welding speed. The level of welding current was 80 A, 90 A, and 100A. Wire Speed was leveled with 55 inch/min, 60 inch/min, and 65 inch/min. The levels were 5 mm/sec, 6 mm/sec, and 7 mm/sec as welding speed. Tensile testing was used to measure strength of weld joint joined by each welding parameters combination. Welding current 100 A, wire speed 60 inch/min, welding speed 5 mm/sec could join ST 37 steel sheet up to 51.41 kg/mm2 of tensile strength. Welding current affected to increase tensile strength when values of welding current were increased between 80 A and 100 A….
Friction and Wear Analysis of UHMWPE Material Using Pin-on-Disc Tester with Lubricant and Non-Lubricant
Authors: Wahyudi M , Ismail R , Jamari J 
Published: July 2020

Abstract
Ultra-high molecular weight polyethylene (UHMWPE) is a biomaterial that is widely used in the manufacture of acetabular liners for the application of artificial hip joints (AHJ). The problem that often arises from UHMWPE material is the occurrence of wear debris as a result of the mechanism of contact of UHMWPE material with its partner material on AHJ. The purpose of this research is to analyze the friction and wear behavior of UHMWPE material which is paired with AISI 316L. Wear test using a pin-on-disc tribometer in dry conditions and serum bovine lubricant. SEM-EDX analysis is used to see the phenomenon of wear track and absorption of AISI 316L metal elements that occur in UHMWPE. The results showed that the use of bovine serum significantly decreased the friction and wear rates of the UHMWPE / AISI 316 pair.
The Correlation between CD4 Count Cell and Opportunistic Infection among HIV/AIDS Patients
Authors: Jayani I , Susmiati  , EWinarti  , Sulistyawati W 
Published: July 2020

Abstract
The objective of this study is to know the correlation between CD4 count cell and opportunistic infection among HIV/AIDS patients. The design of this research is analytical observational by using Cross Sectional approach. The data are taken restrospectively based on medical record of the patients in Mardi Waluyo Hospital in Blitar from March to July 2018. The diagnosis is done by ELISA laboratory Checking. The number of sampling are 48 patients which is got by purposeful sampling technique. From 48 subjects of the research, there are 16 men and 32 women. The result of this study reveals that CD4 count cell of HIV/AIDS patients is 165.27 cell/mm3 in average. The lowest CD4 count cell is 25 cell/mm3 and the highest of CD4 cell count is 450 sel/mm3. The patients of HIV/AIDS who get opportunistic infection is 68.8%, and those who have not opportunistic infection is 31.2%. The analysis using spearman-rho shows that there is correlation between CD4 count cell and opportunistic infection with p=0.00 with strong correlation (r=0.732). It is hoped that the result of this study can be a new literature, and can be discussed about add value of CD4 count cell in managing of HIV patients who get infection, so it can be managed opportunistic infection early.
Designing a Diabetes Mellitus Detection Tool Using the Backpropagation Method
Authors: Alfita R , Rahmawati D , Nahari R V , Iskandar D 
Published: July 2020

Abstract
Technological advances in the field of medical electronics are developing very rapidly; one of the positive effects of advances in electronic technology in the world of health is the detection of Diabetes Mellitus (DM) with urine odor which based on microcontrollers with Backpropagation artificial neural network methods. Diabetes Mellitus is a chronic disease characterized by high levels of sugar (Glucose), and is caused by the inability of pancreas to produce insulin. The detection of diabetes mellitus in this study used gas sensors of TGS 2602, TGS 2610 and TGS 813. Results of the study showed several sensor values; 120-290 for TGS 2610, 120-290 for TGS 813, and 100-170 for TGS 2610. The undertaken artificial neural network method was able to identify two urine samples, of which each sample was tested and conducted a training test with success rate results of 75%.
Digital Filter Design for Classifying Coconut Ages using Blackman FIR and Elliptic IIR Filters
Authors: Rahmawati Diana , Haryanto  , Sakariya Fahrus , Setiawan Heri 
Published: July 2020

Abstract
Tapping a coconut fruit is one of conventional ways that requires specialty in determining the ages of the fruit. The frequency of these taps can be used as a reference to determine the ages of coconut. This study aims to make an automatic device to determine coconut ages using digital filter based on the tapping frequency. The filter could screen the received signals in order to produce clear tapping sounds, or without noises. Two filter types namely Blackman Finite Impulse Response (FIR) and Elliptic Infinite Impulse Response (IIR) were used to reveal the filter’s length and order. MATLAB software was used in the filter testing to compare the responses of the two filters used. Results depicted that Elliptical IIR was better that Blackman FIR, of which the Elliptical IIR produced less noises and better frequency responses.
Content Based Image Retrieval Using Two Color Feature Extraction
Authors: Mufarroha F A , Anamisa D R , Hapsani A G 
Published: July 2020

Abstract
Content Based Image Retrieval (CBIR) is a process to search for an image based on the content or features that are inside. Nowadays, many image retrieval applications have been made to meet the needs, so this application can provide convenience in terms of the introduction and search for an image. In this research, we used 10 different objects as image retrieval consists of Bicycle, Cow, Flower, Frangipani, Grape, Horse, Lovebird, Orange, Strawberry, Tree. These objects can be expressed in 10 classes. Our aim using these objects is viewed from the color of every object and the object of a different kind. From that point of view we built a CBIR system by utilizing the main features of the object (image). The main feature is the color feature. In this research, the main process is the extraction of color features with the color histogram and color moments. So in this research it will produce feature extraction by measuring the similarity in the library image. This measurement is done by calculating the closest distance using the euclidean distance method. The data library used in this research is 10 pieces of data, the test data is 50 pieces with 5 pieces for each of these classes. After testing using data and methods described above, the results of accuracy are obtained that the application of the color moments method gets better results than the color histogram method.
Design and Control a High Gain Synchronous Buck Converter for a Solid State Distribution Transformer
Authors: Satiawan I N W , Citarsa I B F , Suksmadana I M B 
Published: July 2020

Abstract
A Conventional distribution transformer consists of bulky windings, cores and coolant liquid hence it is weighty and large in size. Now days, supporting by development of power semiconductor devices, the idea to develop distribution transformers using switching power converter technology becomes viable. This paper proposed a new structure of a solid state transformer (SST) for power electrical distribution system. The proposed SST works without utilizes high frequency isolating transformer. Instead, high gain cascaded Buck converters are used. The design of Buck Converters involves calculation of the applied components such as Inductors and Capacitors. Simulation result verifies that Buck Converters work well to reduce DC voltage of 25 kV DC voltage to 620 V DC without excessive ripple. The proposed SST is successfully operated to step down 20 KV of AC voltage to 400 V with THD of output voltage less than 2 %.
Design of function generator using arduino due 12 bit dac
Authors: Baskoro F , Sulistiyo E , Basuki I , Widodo A , Nurdiansyah A P 
Published: July 2020

Abstract
Most function generators are composed of analog components, which make the function generator have relatively large dimensions. With relatively large dimensions of the tool, making the tool is not easy to carry everywhere. To make the dimensions of the tool become easier to bring everywhere, the waves generated by the function generator are not made from analog circuits, but are made from digital data stored on the microcontroller and then converted to analog with DAC pins. The method of this research is experimental method. The first thing began with a literature study of the components needed and then continues with the making of system design to generate smaller function generator which can display 4 waves, waves that can be displayed are sine waves, squares, triangles, and sawtooths. The results of the study showed that the function generator was successfully made with smaller dimensions with 10 x 15 cm so that it was easier to carry everywhere and was able to produce sine, square, triangle and sawtooth waves with Vpp of 2.24 volts, Vmax of 2.72 volts, and frequency of 1 KHz.
Development of Programming Ability Test Application For Informatics Students
Authors: Nurdin S R , Prismana IGPE , Prehanto D R , Nuryana IKD 
Published: July 2020

Abstract
An ability that comes from within ourselves is often referred to as talent. Ignorance of talent will be very detrimental because it can cause discomfort in carrying out their work. One talent that cannot be separated from the development of technology is programming talent. This study aims to determine the ability of programming talent possessed by someone. The study was conducted with a case study of Informatics Engineering students at Universitas Negeri Surabaya. Through this research, an application will be produced to test the ability of student talents in the field of programming. The method used in this study is R & D (Research and Development) with 6 stages. Validation of the questions obtained 91.87% results and was declared very valid to be used as test material, while the overall product validation obtained results of 92.94% and in a very feasible range. There is a significant correlation between programming talent (test scores) with programming.
Design of Yagi-Uda Antenna for CDMA Modems at 800 MHz
Authors: Andika Adik Putra , Letsoin Vinsensius , Kaikatui Rapha Nichita , Mangera Paulus , Hardiantono Damis 
Published: July 2020

Abstract
Nowadays CDMA and GSM modem technology are still widely used by the community, especially in rural areas and small towns that are quite far from the BTS location. This paper designs the Yagi-Uda antenna for CDMA modems on the 800 MHz frequency. The number of elements used is 1 driven, 1 reflector and 16 directors. The antenna design simulation uses NEC-Win Pro 1.6 and Ansoft HFSS 13.0 software. Simulations using NEC-Win get VSWR values 1.59 and S11 -13 dB (uses Matlab). Next, the simulation using Ansoft HFSS obtained the results of VSWR 200000 and S11 -9 dB. The simulation results also show that antenna design already has a directional radiation pattern.