bluuebunny/crossref_metadata_2025 huggingface dataset:
The development of game estrategia in the senior high school learning competencies: basis for digital intelligence (phase one)
Authors: Martin N A , Ventayen R J M , Patacsil D H , Patacsil E H
Published: April 2021

This paper determined the significance of the identified learning competencies (LCs) in the Senior High School Curriculum Guide for successful learning amidst disruption. The study used a quasi-experimental research design with forty (40) respondents taken purposively for the First Quarter – First Semester of the Academic Year 2020 – 2021. The Cognitive Process Dimension was the basis to determine the significant difference of learning competencies (LC1, LC2, LC3, and LC4) in one-tailed and two-tailed at 0.05 degrees of freedom using the t-Test Paired Two Sample Means formula. Data revealed that the respondents’ initial scores on the Summative Assessment were unsuccessful in the Applied Subject. The subject teacher proposed an “insertion” in the actual instructions following DepEd Order No. 8, s. 2015 through the development and application of Game Estrategia. The group who received an “insertion” revealed that the overall computed t value was -16.48, which was greater than the t critical value 1.68 one-tailed and 2.02 two-tailed at 0.05 level of significance, which means a significant difference between pretest and posttest in the Applied Subject. The study found out that the group performed very well in their posttest after giving them an “insertion.” Insistent with the Agency’s effort to deliver quality education, the concept of “insertion” through technology aid may improve the teaching-learning process for the identified learning competencies (LCs) in the Curriculum Guide of Secondary Public Schools. The study humbly recommended joint advocacies of the School Administrators, the Subject Teachers, and the Technical Working Group (TWG) to develop, enhance, and sustain Game Estrategia’s objectives in Basic Education. Aside from the modules regularly provided by the Secondary Public Schools, teachers can tap the promising benefits of today’s technology as alternatives to attain successful learning every day.
Optimization of renewable energy based microgrid for Mehran UET Jamshoro
Authors: Shaikh J A , Mirjat N H , Memon Z A , Shan S A , Shaikh S A
Published: April 2021

Renewable energy sources are promising good for providing efficient energy resource with environment friendly advantage. The supply side planning because of microgrid is making it important as transmission fixed and operational costs are reduced. This paper focuses on the optimal design, life cycle cost, and power quality analysis of microgrid. Two options were selected: in the first option isolated microgrid is designed and in the latter option microgid is connected with the national grid. The both models were compared for economic point of view. The compared optimized model is created for which power quality is analyzed and discussed. The most famous energy modeling software named HOMER hybrid renewable energy system, is used for comparing the models while MATLAB/SIMULINK is used for simulating the model for power quality analysis.
Computational technology for improving the quality of difference schemes based on moving nodes
Authors: Rasulov Abdujabar , Dalabaev Umurdin
Published: April 2021

In our papers by us [11],[12] a new method of moving nodes (MMN) was introduced to obtain an approximate analytical solution and construct compact schemes for a one-dimensional convective-diffusion problem. It is proposed to improve the scheme in a three-point pattern. As an initial scheme, a counter flow with one-sided differences is taken. In the QUICK scheme [5], quadratic up flow interpolation is used to determine convective flow. Here we use the solution obtained by the upwind scheme based on MMN. In our above works, the improvement in the accuracy of difference schemes was obtained on the basis of using the method of multi point MMN. In this work, it is proposed to improve the accuracy of the constructed difference schemes using the three point MMN. This is achieved using a more accurate solution to the unknown function on the edge of the considered control volume, the algorithm of which is described in detail in this work.
Estimation of radiated emissions from a structure with a single modal reservation
Authors: Hasan A Alhaj , Zhechev Y S , Gazizov T R
Published: April 2021

The paper presents the electrodynamic simulation results for radiated emisions. The authors consider structures with and without a single modal reservation in the frequency range from 0.1 to 10 GHz. Frequency dependences of the electric field strength and radiated power were obtained. Radiation patterns at frequencies of 0.5, 5, and 10 GHz are presented. The authors showed that due to the strong electromagnetic coupling between the reserved and reserving circuits in inhomogeneous dielectric filling, the radiated interference is lower for the structure with a single modal reservation than without it in almost the entire frequency range under study.
Methodology for design of templates of text communication messages for software marketing
Authors: Malakhovskaya E K , Ekhlakov Y P , Senchenko P V , Sidorov A A
Published: April 2021

Communication messages play a key role in marketing of products and services, and the software market is no exception. A methodology is proposed for design of templates of text communication messages that are based on best practices of experts in software marketing, ideas of marketing, communication theory, copywriting, media linguistics, semiotics; description of the subject area is based on conceptual modeling and production systems. For the purposes of testing, the methodology was used as the basis of a software product – a decision support recommender system for design of communication messages for software marketing.
Modelling and calculating the stiffness of a cross-shaped element of a microelectromechanical gyroscope-accelerometer
Authors: Lysenko I E , Kidyaev N F , Naumenko D V , Ezhova O A
Published: April 2021

This article investigates the design of a linear acceleration and angular velocity sensor with three axis of sensitivity. The modelling of the parametrized geometry of the gyroscope-accelerometer and its cruciform stiffener is carried out based on the ANSYS software package. The dependence of the movement of proof mass on the change in the thickness of the elastic beams of the cruciform element of the gyroscope-accelerometer is obtained.
Quantitative assessment of the brain neural networks activation in dynamics
Authors: Marusina M Ya , Bukhalov A D
Published: April 2021

The quantitative estimation method of activation volumes of large-scale neural networks in a human brain in dynamics has been developed and tested. Processing of face recognition data in the human brain neural networks is carried out by the method of functional magnetic resonance imaging. The results of experiments showed that in the process of recognizing images of faces, the activation of the subjects’ brains differs in different phases of stimulation. The developed method allows one to obtain quantitative information on restructuring of large-scale neural networks of subjects. The results of the study can be used to create learning algorithms in computer vision systems.
Shoots multiplication of vanilla (Vanilla planifolia) with benzyl amino purine and kinetin modification
Authors: Erawati D N , Wardati I , Humaida S , Mawadah Y , Ikanafi’ah A , Ryana W M
Published: April 2021

Micro propagation techniques for vegetative propagation of vanilla have been developed to overcome limited planting material and the attack of Fusarium disease. The ability of vanilla explants to regenerate and differentiate to form multiplication of shoots is still limited. Therefore it is necessary to regulate the addition of Benzyl Amino Purine and Kinetin into the media for optimal shoot multiplication so that the quality of the vanilla culture seedlings can be improved. The study was conducted at Tissue Culture Laboratory of Politeknik Negeri Jember using a factorial Complete Randomized Design. Factor 1 is BAP concentration which is 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 mg/liter and factor 2 is Kinetin concentration which is 0.0, 1.0, 2.0 mg/liter. Further data analysis used Duncan’s average difference test. The research result show that The addition of BAP affected the shoots growth rate of vanilla explants with the fastest mean rate of 9 days after inoculation with the addition of 2.5 mgL-1 and 67-100% sprouting ability 14 days after inoculation. The average number of shoots was highest in the addition of 0.5 mg L-1 BAP and 2.0 mgL-1 Kinetin at 56 days after inoculation with a mean of 6.00 shoots / explant.
The effect of land use conversion on landslides risk in protected function areas: case study in Samigaluh district, Kulon progo regency, Yogyakarta, Indonesia
Authors: Apriani A , Putra B P , Habib J A , Alfariji M
Published: April 2021

Protected areas whose function have been converted became problems in many regions. The cause of landslides is still being studied whether it is natural conditions or human contributions, namely land use changes. Investigation of land use change events play an important role in environmental sustainability. The purpose of this study was to determine the effect of land use change in protected areas against landslides. The method used is a surveillance method. The data is processed using non-parametric statistical tests by comparing the level of landslide hazards in areas where there is no land function conversion with those that have land function conversion. The data description shown that 58% of the protected function area in Samigaluh District had the potential for high landslides. The results obtained shown that there was a significant difference in the level of landslide hazard between areas with and without land function conversion. So that the land conversion that occurred in the protected forest in Samigaluh District had a significant effect on landslides as evidenced by the asymp sig (0.031) <p-value (0.05). This result becomes consideration for the local government in monitoring protected forests for environmental sustainability.
Strength and hardness of the engine mount prototype chopped composite fibre made from rubber compound and ramie fibre (Boehmeria nivea)
Authors: Tyagita D A , Irawan A
Published: April 2021

Rubber and natural fibres can be used as engine mount products as automotive components with structural strength and alloys by ASTM and SNI standards. The purpose of this study was to measure the tensile strength and hardness as an analysis of the structure of the alloy between chopped fibre composites made of hemp fibre reinforced rubber tree sap, and aerosil. The research stages is made a rubber compound from natural rubber, then followed by taking the fibres from the hemp stems, the results of which were long fibres and random fibres. An alloy of rubber, fibre, and dry reinforcement in the form of a powder and a bonding material. The combination of these two main ingredients molded with a composition of 35 phr and 45 phr. Tensile and hardness tests are carried out to obtain the mechanical properties of the material. Mechanical properties of hemp fibre reinforced CF composites with bonded material are used for the manufactured engine mount prototypes. This research method is to make parts accorded to ASTM and SNI with 3 parts of each specimen in each composition, plus a market engine mounts part as a comparison. The total sample specimens were 30 pieces. 10 specimens were subjected to tensile test, 10 hardness test specimens, and 10 compressive test specimens. The result of this research is that CF hemp fibre-reinforced composites in the form of engine mounts are better than factory-made engine mounts.
Techno-economic analysis on cookies production made from Adlay (Coix lacryma-jobi) flour that supplemented with moringa (Moringa oleífera) leaves powder
Authors: Indriati A , Andriana Y , Mayasti N K I , Luthfiyanti R , Iwansyah A C , Tribowo R I , Sriharti
Published: April 2021

The market demand of cookie products increases annually. In Indonesia, the growth average of cookies consumption per capita reaches of 33.34 %. Exploration on alternative source used as raw material of cookies is an important issue as the major component of cookies production in Indonesia, wheat flour, is fulfilled by import. Adlay (Coix lacryma-jobi) flour is potential source that could be developed in cookies production due to its nutritional content. In this study, techno-economic analysis in establishment of mini plant to produce cookies made from Adlay flour that supplemented with Moringa (Moringa oleífera) leaves was carried out. From technological approach, the cookie products developed contents of water, ash, protein, fat and carbohydrate were 4.78, 8.24, 8.75, 51.73 respectively. From financial feasibility analysis, some feasibility criteria including net present value (NPV), benefit-cost ratio (B/C), internal rate of return (IRR), and payback period (PBP) indicated this mini plant was feasible with the values of 372,694,093 IDR, 1.17, 53%, and 28 months, respectively. This study revealed that the establishment of mini plant to produce cookies from Adlay flour that supplemented by Moringa leaves powder was techno-economically feasible.
Effect of banana weevil enriched with β-glucan from Saccharomyces cerevisiae on productivity and abdominal fat of broiler chickens
Authors: Imam S , Suryadi U
Published: April 2021

The study aimed to evaluate the utilization banana weevil enriched with β-glucan from Saccharomyces cerevisiae on performance and abdominal fat of broiler chickens. The research stages were started from fermented banana weevil flour with Saccharomyces cerevisiae (Fermipan® from PT Sangra Ratu Boga) with 0.5% administration (pruduced β-glucan content 2240 mg/kg). Dietary treatment was initiated when the broiler was 22-day-old with an initial body weight 459.41±50.71 up to 35-day-old. The feed used BR1 (Patriot Feed) from PT. Panca Patriot Prima. Treatment consisted of T0 (control without β-glucan), T1 (β-glucan administered at 25 ppm), T2 (β-glucan administered at 50 ppm), T3 (β-glucan administered at 75 ppm), and T4 (β-glucan administered at 100 ppm). Parameters observed were feed consumption, feed conversion ratio, final body weight (performance), and abdominal fat. The study was assigned in a completely randomized design (CRD) with 5 treatments and 4 replicates (10 birds each). The results showed that the utilization banana weevil enriched with β-glucan from Saccharomyces cerevisiae had no significant effect (P>0.05) on feed consumption, feed conversion ratio, final body weight and abdominal fat of broiler chickens. The use of banana weevil enriched with β-glucan from Saccharomyces cerevisiae up to a level of 100 ppm has not been able to improve performance and reduce abdominal fat for broiler chickens that are maintained until 35-days-old.
Actions of edamame soybean isoflavones in an avian model: the Japanese quail (Cortunix-cortunix japónica)
Authors: Hertamawati R T , Nusantoro S , Rahma R
Published: April 2021

Isoflavone are soybean compounds that possess weak estrogenic and antiestrogenic activities. The present study examined the effect of extract isoflavone of edamame soybean supplementation into the poultry ration to increasing production and reproduction performance of Japanese quail hens. The research was an experimental observation applying Complete Randomized Design. The treatment done was supplementation of the extract isoflavone into the ration, quantitatively, i.e P0 : 0% (group control), P1 : 0.1%, P2 : 0.3%, and P3 : 05%, in every single treatment consists of 5 repetitions of 10 quails each. The level isoflavone of edamame soybean were 0.0015% for deidzein and 0.0013% for genistein. The treatment was done for fourteen days old quail until its sexual maturity. Observation was conducted for the growth, feed intake, age at sexual maturity, weight of the first laying egg, cholesterol egg and performance of production in quail hens. The results of experiment indicate that the addition of extract isoflavone in the ration did not exert an effect on reproductive performance, and egg production of female quail (p>0.05). There was a tendency that the supplementation of extract isoflavone could increase in sexual maturity and reduce cholesterol egg of quail. It is concluded that the supplementation of extract isoflavone of edamame soybean up to 0.5% has not been able to improve production and reproductive performance and reduce cholesterol levels of quail egg.
Characteristics bioactive compound of muntingia calabura kersen leaves in grow up height different (district area)
Authors: Handayani A M , Rakhmadevi A G , Azizah M
Published: April 2021

Muntingia calaburahas the vertiue from the fruits and the leaves. As long time the leaves just become the trash. The place whereMuntingia calaburatrees grow up may affect the bioactive components of kersen’s leaves produced. This study aims to determine the characteristics of the bioactive components of kersen leaves at different heights, as well as their potential as kersen leaf tea. The total phenol and flavonoid content also analyzed to support the potential of kersen leaf tea as an herbal tea. The research method used a completely randomized design with one factor, namely the difference in the height of the growing places of theMuntingia calabura(kersen) trees taken from Jember, Bondowoso and Situbondo Regency. The bioactive compounds found inMuntingia calaburaleaves analysed using FTIR were confirmed as functional groups at wavelengths 3362.48, 2920.96, 2850.30, 1623.51, 1447.40, 1214.17, 1101.28 dan 680.77 cm−1that was alcohol OH bond, C-H bond, aldehyde group, alkene group, aromatic group, eter, C-O bond, C-H bond and C-N bond. The results showed that theMuntingia calaburaleaves from grow up of the height different consist of total phenolic content between 4.066,10 – 5.914,92 mg/100 GAE and total flavonoid content between 22,34 – 31,44 mg/g.
The colour and texture properties of mushroom chicken nugget with various flour as a filler
Authors: Kristanti D , Setiaboma W
Published: April 2021

The nugget is one of popular frozen food product. The oyster mushroom is ingredient that can be used as an alternative protein and dietary fibre source for nugget product. The local flours commodity are used as a filler for mushroom chicken nugget (MCN) to reduce consumption and import of wheat flour in Indonesia. The use of various flour as filler will cause change in physicochemical and sensory properties of MCN, especially colour and texture properties. This study aimed to analysed the colour properties and texture properties of MCN which is coated and without coated of breadcrumbs. The filler that used in this study are wheat flour (MCN1 as a control), mocaf (MCN2), banana flour (MCN3), and potato flour (MCN4). The result of this study showed that the filler affect the lightness, b value, total colour difference (ΔE), hardness, gumminess, and chewiness of MCN. The colour properties of the coated breadcrumbs nugget were higher than non-coated, while the texture properties of the coated breadcrumbs nugget were lower than without. The breadcrumbs coating improved the colour and texture properties quality of mushroom chicken nugget.
The effect of of cassava variety and fermentation duration on the texture and acceptabiity of cooked-dried growol
Authors: Ardiah R N , Wariyah Ch
Published: April 2021

Cassava is a staple food source of carbohydrates, which is consumed in various forms such as growol, gatot and tiwul. Growol is produced through a fermentation process and therefore, has a sour taste typical. As an intermediate moisture food, it has a shelf life of just 3-4 days and is susceptible to mold growth. Previous studies have shown that a drying process may extend its shelf life to more than 6 months. The problem in carrying out this process was that growol producers in rural industries always make use of a mixture of several cassava varieties and fermentation was carried out for 2-3 days. Due to this reason, its physical and chemical properties varied. This study aims to evaluate the effect of the cassava variety and fermentation time on the texture and acceptability of cooked-dried growol. This research used three cassava varieties i.e. Meni, Ketan, Lanting and the fermentation time was 2 and 4 days. The fresh cassavas and dried-growols were analyzed for their starch, amylose and moisture content. Furthermore, the acceptability was determined by cooking each dried-growol using a rice cooker and its ratio to water was 1:2. Afterwards, they were tested for texture and preference level through a hedonic test. The results showed that the starch content of cassavas and their acceptability were significantly different, whereas the texture of cooked-dried growol was not significantly different The acceptable was produced with Meni cassava variety and fermentation time of 2 days.
Utilization of Coffee By-Products as Profitable Foods - A Mini Review
Authors: Muzaifa M , Rahmi F , Syarifudin
Published: April 2021

Indonesia is one of the largest coffee producer and exporter countries in the world. The current significant environmental problem challenge being faced by Indonesian farmer is the absence of utilization of coffee by-products. Coffee processing from fruit to brewing coffee that is ready to drink produces a large amount of by-product. Depending on the processing method chosen, the waste produced also differs consisting of pulp, husk, musilage, silver skin and residual coffee grounds. This review aims to provide an overview on coffee by-products characteristic and their potential utilization as profitable products. For this purpose, we have collected and reviewed some literature on chemical properties of coffee by-products and the history of these by-products consumption in some countries. The coffee pulp is the largest by-product acquired during wet coffee processing, so the primary attention has given to the by-product. The by-products have been studied from the coffee pulp including juice, cascara and kombucha. Cascara is a tea made from dried coffee pulp. Cascara has a long history of consumption in Yemen, Ethiopia and South America with different name. Other products are still being studied as products with great potential for further development. With the high crop production projected in the future, the utilization of coffee by-products as useful products should be realized. It is hoped that the results of this review can provide insight to all stakeholders.
The development of visualization of the small and medium industry distribution (IKM) using a web-based geographic information system
Authors: Wibowo N S , Selviyanti E
Published: April 2021

The Ministry of Industry increased the IKM growth to 5-6 percent by the end of 2019. It is noted that the number of IKM in the country has increased every year. In 2015 there were 3.68 million IKM and increased to 4.41 million IKM. In 2017, the number of IKM reached 4.59 million. The SME workforce absorption has the largest proportion compared to other sectors. The percentage of labour absorption in 2016 reached 97.22 percent. In 2016, IKM in Indonesia increased by 4.5 percent, growing to 165,983 units compared to 2015 and has absorbed a workforce of 350,000 people. Data from Diskoperindag of Bondowoso Regency states that every year the number of IKMs increases by at least 5 percent, until now the number of IKM in Bondowoso has reached more than 36 thousand, an increase compared to 2013 which reached 28 thousand IKM. In order to improve and optimize the IKM in Bondowoso Regency, a system was developed that is able to assist existing IKM and new IKM that will emerge, thus providing an overview of the distribution of IKM throughout Bondowoso Regency. The IKM Geographical Information System developed is able to visualize the distribution of IKM in Bondowoso Regency well. The system has been successfully developed through testing, namely the proportion of test results of 100%, where the average value of system quality (5.6), information quality (5.4) and user satisfaction (5.35).
Development of automatic temperature and humidity control system in kumbung (oyster mushroom) using fuzzy logic controller
Authors: Agustianto K , Wardana R , Destarianto P , Mulyadi E , Wiryawan I G
Published: April 2021

National mushroom production in 2018, 2017, 2016 and 2015 amounted to: 31052, 3702, 40915 and 33485 tons. In 2018 the per capita availability is 0.15, this figure needs to be increased as an alternative food solution, this is based on the texture of mushrooms that resembles meat and is delicious, making this plant often become a variety of processed foods such as chips, rendang, satay, shredded, meatballs and supplement. Mushrooms cultivated in Indonesia have high nutritional value and even mushrooms contain 19-35 percent higher protein than rice (7.38 percent) and wheat (13.2 percent). Cultivation of mushrooms, especially oyster mushrooms, has the potential to be developed more widely in Indonesia because it has economic value and is environmentally friendly. However, oyster mushroom cultivation has challenges, especially to produce maximum production in each kumbung. The challenge that arises in oyster mushroom cultivation is that it grows well at temperatures of 16-30 ° C and relative humidity of 80 - 95%. Environmental conditioning is carried out by the average farmer by manually spraying water in the mushroom kumbung. The use of manual methods requires high human resources, apart from that it is not effective and efficient. This study aims to develop a Temperature and Humidity Control System in Kumbung using a Fuzzy Logic Controller. This research uses Fuzzy Proportional-Integral-Derivative (PID) Controller, the sensor data (Temperature and Humidity) will be processed as a sensor array, where to determine the temperature and humidity the system will evaluate the readings of several sensors at once. The system developed is an adaptive system using the Fuzzy method which will suit the environment, the test results show an accuracy rate of 86%, so it is expected that the configuration generated by the tool can be used to increase the precision of mushroom cultivation, so that production efficiency and increased mushroom production can be achieved.
Growth and yield of pagoda (Brassica narinosa L) with concentration and watering interval of fermented rabbit urine on hydroponic system
Authors: Guntara R. , Isnaeni S. , Rosmala A.
Published: April 2021

Organic fertilization is the addition of nutrients that are beneficial for plant growth and yield and can improve soil fertility and quality. The aim of this research was to examine the effect of fermented urine rabbit concentration and watering interval as well of interaction of both on the growth and yield of pagoda (Brassica narinosa L). The first factor is consentration of fermented rabbit urine, 50 ml−1, 75 ml−1, and 100 ml−1. The second factor is watering interval every 2 days, 3 days and 4 days. The result of the fertilizer treatment with fermented rabbit urine is significantly each observation parameter, and the treatment 100 ml−1 was different from the treatment 50 ml−1, while the watering interval significantly affected the plant height, number of leaves, color leaves, leaf area, plant circumference, plant fresh wight and plant dry weight. 2 days watering interval is significantly from 4 days. The interaction affect the parameters of the number of leaves 2 weeks after planting and leaf color 1 weeks after planting.
Experimental investigations on the performance of thermoelectric generator as energy conversion system
Authors: Rachmanita R E , Karimah C N , Azizah N
Published: April 2021

Energy conversion system based on thermoelectric generator that utilized the residual heat of condenser as heat energy resource and water circulation as a cooling system has been designed. Thermoelectric generator functions as a heat-to-electricity energy conversion by using temperature difference between the two sides of the thermoelectric 4 x 4 x 0.3 cm TEG SP1848 module has been used as a thermoelectric generator that can hold back the temperature up to 125°C. The conductance value of TEG SP1848 is 0.0025 W/K. The important part of energy conversion systems are thermoelectric generator configuration, conductor and cooling system. Conductor is the component which functions as heat transfer media from condenser pipe to thermoelectric generator. The diameter of the condenser pipe in this study was 4.2 cm. The function of cooling system is cooling up the thermoelectric generator cold side in order to enhance the temperature difference between cold side and hot side. The cooling system that used in this research is water cooling that consisting of a water pump, water block, radiator, fan and water. The collecting data has been done by using series configuration of thermoelectric generator and varying the temperature of 40°C -110°C and the resistance of 10Ω-200Ω. The best resistance that can produce the greatest power is 39 Ω. The hot side temperature that can produce the greatest power in this study is 110 °C. The average of power and efficiency of energy conversion system was 0.129 W and 2%.
Extraction of minerals on celestial bodies as a new scientific direction
Authors: Khairutdinov A. , Tyulyaeva Y. , Kongar-Syuryun C. , Rybak A.
Published: April 2021

The paper presents the analysis of the problems encountered in the extraction of minerals. The areas that are affected by the activities of the mining industry are named. The prerequisites for the beginning of global development of the mineral resources in outer space are analyzed. It is concluded that there is a need to develop the resources of celestial bodies. The legal aspects of the development of space bodies’ resources are touched upon. It is noted that the existing laws on space are not perfect or contradictory. The use of different interpretations of the laws on space for obtaining preferences in the assignment of resources of the mineral resource base of outer space is indicated. Various stages of the scientific development of outer space are touched upon. It is noted that the catalyst for space exploration was the military-political confrontation during the cold war. The significant role of the United States and Russia, as the legal successor of the USSR, in the field of scientific research and development of outer space, as well as their importance in the development of space programs of other countries, is emphasized. A new vector in space exploration has been identified, and with it the new goals have been formed. The prerequisites for the beginning of the commercial development of space resources are formulated. It is noted that the study of outer space, as well as the development of its mineral resource base, goes beyond the scope of monodisciplinarity. For the successful implementation of the program of the extraction of mineral raw materials from celestial bodies, it is necessary to develop a number of scientific directions, parallel and consistent with the other ones. At the same time, it is indicated that for a more successful implementation of these scientific programs, it is necessary to combine all scientific directions into one scientific discipline. It is recommended to allocate a new scientific discipline based on the experience and development of geotechnologies.
Method for determining the concentration of ferrosilicon in suspension for dense medium separation process
Authors: Timofeev A. S. , Dvoychenkova G.P. , Chumakov A. A. , Melekhina K. A.
Published: April 2021

In Russia, dumps of diamond-bearing deposits are characterized by a high content of secondary modified non-magnetic kimberlite minerals of fine size classes (-0.05 mm), the presence of which negatively affects their processing by methods of dense media separation. In the present work, the possibility of determining the concentration of ferrosilicon in a continuous process of dense medium separation by measuring the magnetic properties of a suspension was investigated As a result of experimental studies, the dependences of volumetric concentration of ferrosilicon on the magnetic moment of various grades were obtained, which made it possible to measure the concentration of ferrosilicon in a continuous process of dense media separation by measuring the magnetic properties of the suspension.
Application of High- and Low-Pass Spatial Filters in Analysis of Cone Penetration Test (CPTu)
Authors: Rainer J. , Bagińska I.
Published: April 2021

The paper examines the high and low pass spatial filters used in the Cone Penetration Test (CPT) recordings in the soil and aims to demonstrate their usefulness and effectiveness in the interpretation of CPT measurements. The procedure of low-pass inverse filtration was used to reduce the effects associated with the occurrence of thin layers. High-pass filters were used to find places where the boundary of layers between different Soil Behaviour Type (SBT) could potentially exist. The application of both filters was tested on natural soils and on anthropological dumping soils.
Towards Impact-Based Flood Forecasting and Warning in Malaysia: A Case Study at Kelantan River
Authors: Sidek L M , Basri H , Mohammed M H , Marufuzzaman M , Ishak N A , Ishak A M , Omar B Z C , Osman S , Ramly S , Hassan M H
Published: April 2021

Impact-based forecasting and warning services aim to bridge the gap between producers and users of warning information by connecting and increasing synergies between the components of effective early warning systems. In this research, we proposed an automated warning message based on colour codes to trigger risk mitigation actions at the local level in the flood-exposed communities of Kelantan river basin, Malaysia. With a community-based approach for different groups of users (i.e. sectors), flood-impact scenarios were determined from past events and related to colour codes. These were developed into impact-based forecasting and warnings that can connect water levels, through the colour code, to localised guidance information tailored to sectors’ needs on how to respond to the expected flood. Overall, the colour coded impact-based warnings were found to be an easy and understandable way to link water level forecasts to the necessary risk mitigation actions. However, further investigation is needed to validate these findings under real-time conditions. IBF has vast potential in Malaysia, but its integration requires significant institutional changes, such as an inter-facing agency (long term) or team (short term), adjusted policy frameworks (standing orders on disasters), and new resource allocations for skills development and technological innovation from national to local levels. Overall, this paper aims to offer the first insight into impact-based forecasting and warning services in Malaysia to trigger further research and project developments.
Building Resilience from Double Disasters: The Direct Impact of The Pandeglang Tsunami 2018 And COVID-19 Outbreak on Tourism and Supporting Industry
Authors: Sagala S , Rosyidie A , Azhari D , Ramadhani A , Rinaldy T K , Racharjo S I
Published: April 2021

Tanjung Lesung, Pandeglang was designated as the first Tourism Special Economic Zones since 2015. However, the coastal area in Pandeglang is prone to disasters. Recently, a tsunami upended the hospitality industry in Pandeglang. Compounded with the occurrence of COVID-19 outbreak, recovery measures prove to be more difficult. The tourism sector has broader economic implications due to its ties with other supporting sectors. The purpose of this study is to understand the direct impacts on tourism and its supporting industry after the tsunami and COVID-19 outbreak in Pandeglang. Therefore, the research question is: “What are the direct impacts of the 2018 tsunami and COVID-19 outbreak to Pandeglang tourism?”. This research uses a qualitative method, particularly content analysis of news, articles, journals, and the result of interviews. The results show that the direct impacts of both disasters to the Pandeglang tourism sector comprise of three aspects, namely the damage in physical assets, the decrease in value property, and the loss of lives. As a regency that relies heavily on tourism as one of its mainstay economic sectors, the tsunami and COVID-19 pandemic are big blows to Pandeglang tourism.
Effect of service quality and online servicescape toward customer satisfaction and loyalty mediated by perceived value
Authors: Hanafi  , Widyawati R , Widowati A S
Published: April 2021

Application-based transport or online ojek has been main trends in Indonesia. It gives solution to public in rush hours especially in urban area. Even though they are needed but many customers have complaint about their services. The purposes of this study are observing the operator effort to maintain customer satisfaction and loyalty. It evaluated customer response to determine the cause of the satisfaction and loyalty especially for the construct of service quality and online servicescape. In addition, it brings new construct as mediation variable of perceived value to strengthen the relationship among the variables. This study found the new relationship among service quality and online servicescape to strengthen customer satisfaction and loyalty. By collecting the customers from Jakarta region as respondent’s, this study tested their perception about the online service delivery and their effect to the loyalty. Some suggestion and direction also given to expand the research as discussion topic.
The Power of Flowers: Hungarian Tourism through Indonesian Lens
Authors: Priatmoko S , Panghastuti T , Murti A
Published: April 2021

Flowers are a part of tourist attractions. The existence of gardens and flowers in a tourist spot affects the perception of visitors. This research aims to determine the perceptions and impressions of tourists from Indonesia who have visited Hungary. Data obtained from online surveys through the Whatsapp group of Indonesian students. Furthermore, the data obtained processed and counted to find out the tendency of the flowers impression to visitor. The data obtained shows that flowers have an influence on impressions for visitors in Hungary. Flowers impression correlates versus selfie activity, willingness to referral and attention to flower’s colour with lower than the given p-value of 0.05. They are 0.002 for selfie, 0.020 for willingness to referral, and 0.01 for colour intention respectively.
Predicting Period Stock Spread Ranking Using Revenue Indicators and Machine Learning Techniques
Authors: Chiu C H , Tsai Y C
Published: April 2021

Predicting stock market movements is a well-known problem of the machine learning field. In general, there are two primary methods used to analyze stocks and make investment decisions: fundamental analysis and technical analysis. But fewer researchers focus on monthly revenue indicators and different time period prediction. We collect and organize financial data extracted from Taiwan and U.S n companies’ monthly and quarterly financial reports across a period of 10 years. In addition, we successfully use fundamental and technical indicators as training model’s features. Among experiment results, which has good performance. The annualized profitability (annualized rate of return) can reach 2.56%, the Sharpe ratio is 2.01, the maximum amplitude is - 20.8%. Compared with other strategies, our strategy is relatively stable and achieves ideal results. The more important is we used monthly revenue indicators based features to improve model performance.
The Analysis of PRISM Performance in PT. XYZ
Authors: Farmania A , Prasetyo R
Published: April 2021

The intense competition between companies in Indonesia in getting the opportunity to become one of the suppliers of multinational companies requires extra value in showing the ability and quality of the company. Many companies don’t know the quality and capabilities to compete. PT. XYZ, which has become one of the suppliers in the largest automotive company in Indonesia, also has a similar problem, we found that the company uses performance measurement which is not quite accurate in knowing the actual condition of the company. In this research, we know that performance prism is the right performance measurement for the company, this makes it easier for the company to know which parts need to be fixed immediately to achieve the predetermined targets.
Covid19 and Higher Education: A Degree Course Recommender System Based on Personality Using Rule-Based
Authors: Deraman N A , Wan Ariffin W M A , Samah K A F A , Jono M N H H , Isa M A M , Zamzuri Z F , Yahaya S A
Published: April 2021

As a result of the pandemic Covid19 and the enforcement of Movement Control Order (MCO) in Malaysia, it is difficult for the Ministry of Education to explain the selection of courses at the university. Current systems such as “Selangkah ke UiTM,” “eSemak Politeknik” and “EduAdvisor” concentrate only on SPM graduates. As a result, this study proposes a recommendation system that can provide recommendations for the course to suit students’ personalities. Diploma of Computer Science students from the Faculty of Computer and Mathematical Science (FSKM) at UiTM Melaka are selected as a case study. This system uses the rule-based approach that took psychometric test results: “Inventori Minat Kerjaya” and mapped it to the traits needed for the five courses offered at the faculty to help students determine the most appropriate course. This prototype system consists of 170 test questions, and the results of the top 3 IMK personalities are chosen to be mapped to the courses offered. Usability and accuracy testing has been carried out at an average rate of 77.5%, and accuracy is 66.7%.
The Effect Of Tourism Attractions On Tourists’ Visiting Interest To Penglipuran Village, Bangli District
Authors: Maulana Y , Ulinnuha H , Chandra D L T
Published: April 2021

Penglipuran tourism village is internationally recognized as one of the cleanest villages in the world. This study aims to determine the effect of tourist attractions on tourist visiting interests. The research method used is descriptive quantitative. Primary data collection using a questionnaire. The data analysis technique used is the simple linear regression analysis. The results of data processing showed a positive influence between the development of tourist attractions with their interest in visiting by 73,3%. This means that if attractions are developed, the interest in visiting will increase. Suggestions for the managers to come up with new attraction ideas by utilizing the local wisdom of Penglipuran villagers.
Measuring software quality with usability, efficiency, and portability characteristics
Authors: Sholiq  , Auda R A , Subriadi A P , Tjahyanto A , Wulandari A D
Published: April 2021

The paper aims to measure the quality of the “Application of software cost estimation (AoSCE)” produced by the author in the previous study. The quality characteristics measured include usability, efficiency, and portability using the ISO 9126-1 standard. The measurement results indicate that the three characteristics are good, but the usability characteristics still need improvement. The interesting of this paper is that testing procedures and worksheets can be applied to measure the quality of other software by adjusting the conditions of the test object.
Prediction of air quality in Jakarta during the COVID-19 outbreak using long short-term memory machine learning
Authors: Wihayati  , Wibowo F W
Published: April 2021

Air pollution is one of the world’s problems, not just one location. This air pollution is caused by pollutants that are harmful to human health and the environment. Some pollutants are most influential, namely particulate matter, ground-level ozone, carbon monoxide, sulfur dioxide, and nitrogen dioxide. Several countries decided to lock down when the COVID-19 outbreak was announced simultaneously throughout the world like a pandemic. In Jakarta, Indonesia applies large-scale social restrictions (PSBB). The resulting impact is a drastic reduction in air pollution on air quality. This paper aims to predict air quality during the COVID-19 outbreak in Jakarta using long short-term memory (LSTM) machine learning. The evaluation of the LSTM model used in this paper is the root mean square error (RMSE). The results obtained show that the Adam optimizer can bring the prediction results closer to the dataset used.
Communication Networks of On-Farm Rubber in Riau Province, Indonesia
Authors: Yulida R , Rosnita R , Andriani Y , Ikhwan M
Published: April 2021

The rubber on-farm subsystem is an important part of rubber commodity development. Communication is an important part of the on-farm subsystem carried out by farmers because the communication network formed describes the farmer’s communication pattern. The research aims to analyze the communication networks on-farm rubber in Riau and was conducted in two potential districts for rubber commodities in Riau Province, which are Kuantan Singingi Regency and Kampar Regency. To obtain research data, respondents were determined by purposive and snowball sampling. The number of respondents in this research was 168 rubber farmers. The results of the research showed that the on-farm communication network of rubber farmers in Kampar Regency, in a centralized pattern form (interlocking personal network), indicated that there are individuals dominant in the communication network of rubber farmers. Meanwhile, the communication network for rubber farmers in Kuantan Singingi Regency, with a radial personal network, confirmed that the farmer information centers have begun to spread to several individuals. It is necessary to introduce institutional and communication technology, so that farmer information centers are not limited on only certain individuals, and farmers have choice of information sources that can increase knowledge and help to solve problems for rubber farmers in Riau Province.
Distribution Mapping of Rice, Corn, and Soybean Production Based on Geographic Information Systems in Pandeglang Regency
Authors: Hermita N , Sumantri A T , Riyanto R A , Mulyaningsih A
Published: April 2021

This study aimed to present the data on the mapping of the distribution of rice, corn and soybean production, based on the geographic information system. The method used in this research was the survey method. The research location was in Pandeglang Regency with the consideration that Pandeglang Regency is one of the areas in Banten Province with variety of potential natural resources, especially the abundant and valuable agricultural crop production.. Data were collected in July 2020-September 2020 and analyzed descriptively. The results showed that the average production was very high for rice (39713.61-62309.88); Corn (240.50-988.47); and soybeans (2524.50-5004.45) while the average production was very low for rice (6967.11-13783.74); Corn (13095.92-32175.48); and Soybean (00.00-166.30) which means that the production yield was very low in several sub-districts in Pandeglang Regency which need attention in this case related to land suitability evaluation.
Analysis of the Role of Livestock Sub-Sector in Economic Growth in West Sumatra
Authors: Suresti A , Tan F , Adrimas  , Dinata U
Published: April 2021

This study aimed to analyze the role and growth of the livestock on economic development in West Sumatra Province. This study used Analysis of Location Quotient (LQ), Dynamic Location Quotient (DLQ) and Shift Share Analysis. The data used in this study had secondary data from the 2016-2019 period. The research method used Desk Study. The results showed that the livestock was a non-basis sub-sector. The average LQ value of in 2016-2019 was 0.96 and And this sub sector will remain a non-base in the future, this showed that the livestock had not changed its role in the future. The determining factor for this change in role was the structure of the economy.