bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Implementation of Augmented Reality in Increasing Student Motivation: Systematic Literature Review
Authors: Saadon Nur Farah Syuhada Mohamad , Ahmad Ibrahim , Hanapi Ahmad Naim Chee Pee @ Che 
Published: July 2020

Abstract
The purpose of this article is to analyze the implementation of augmented reality in increasing student motivation. A systematic literature review was conducted in March 2018 and updated in January 2019. This paper includes a literature review of relevant research of motivation in augmented reality since in year 2013. The object of research is the augmented reality, and the subject is the student motivation. As a result of the study, it has been found that augmented reality gives a positive result in increasing student motivation. The study show that augmented reality has a potential to have a significant demand to increase student motivation in learning and therefore the need to develop an appropriate tool to keep up student motivation in learning at schools and universities. Results have shown that students that used augmented reality is more confidence and show higher learning motivation in learning.
Intelligent System of Automatic Shrimp Feeding
Authors: Novianda N , Liza F , Ahmad I 
Published: July 2020

Abstract
Feeding on shrimp culture is important to the shrimp growth process so that the expected yields are achieved. Feeding must be balanced and timely, there are no advantages or disadvantages in feeding because all the feed provided is not necessarily completely consumed by shrimp, therefore it is necessary to have technology that can control shrimp feeding. Automatic shrimp feed technology can be a solution to the problem of feeding to support the productivity of shrimp culture. Automatic shrimp feeder is built using an arduino microcontroller module, RTC module (Real Time Clock), and feed throwing system. The shrimp feeding method with the working principle of shrimp feeder is shrimp feed thrown horizontally due to centrifugal force. With the influence of the centrifugal force from the propeller spreader, the feed will be thrown throughout the surface of the pond. Feeding is controlled using Arduino by setting the time. Shrimp feeding is done every 4 hours and the appliance is on for 7 minutes to spread 10 kg of feed for the number of shrimps 1,500 and the width of kolan 400 m2 with a minimum throwing distance of feed 1 meter and a maximum of 7 meters.
Refining Citronella Oil (Cymbopogon Nardus L) by Utilizing Sunlight Using Solar Cells (Photovoltaics)
Authors: Safitri N , Syahputra R , Putri K Y , Rihayat T , Nurhanifa  
Published: July 2020

Abstract
Sunlight is one of the very abundant energy. In its use, many things can be applied such as converting the sunlight into electrical energy with the help of solar cells. In this research, 4 solar cells are used with a capacity of 1000 wp, so in a day they are able to produce 28,000 watts of electricity. This is a very potential electrical energy because it is commonly used to facilitate the process of refining essential oils. The results and the quality of oil obtained in refining research by utilizing sunlight using solar cells shows that the refining time of 6 hours is the best time for the refining process, while the 1 day drying time is better than 2 and 3 days. This is consistent with the oil yield obtained. The yield that has been produced is tested based on Indonesian National Standard (SNI) 2385-2006 through density and Bias Index tests.
Detection of Empty Slots in Car Parking System Using Neural Network Method
Authors: Ihsan Ahmad , Fadillah Nurul , Gunawan C R , Mursyidah Mursyidah 
Published: July 2020

Abstract
There are many transportation equipment such as a car, a motorbike in Indonesia. Increasing the volume of vehicle users will increase parking activities in every public place. Parking is a condition of a vehicle that is not temporary. The current parking system still uses a conventional parking system that only uses parking lots and parking attendants who control each vehicle that enters, and often do not pay attention to the capacity of parking space that has been provided and often drivers go around first to find an empty parking lot. Therefore, detection of empty slots in the parking system is needed. To obtain this information, this study using a neural network method. The neural network is one of the information processing systems designed by imitating the workings of the human brain in problem-solving. The purpose of this research is to determine which car parking slots filled or empty parking slots. The results of detection of car parking slots using a neural network method were carried out experiments on 20 objects with as many as 12 slots and with three slots that are rectangles, squares, and traingles. In the square slot with an area of 784 cm2 get accuracy results 100%, rectangular slots with an area of 3.608 cm2 obtained accuracy 95% and a traingle slot with an area of 1.804 cm2 obtained an accuracy 90%.
Q-switched Erbium-Doped Fiber Laser Incorporating Multi-Walled Carbon Nanotubes as a Saturable Absorber
Authors: Huda C , Yasin M , Harun SW , Jafry A A A , Rosol A H A 
Published: July 2020

Abstract
We demonstrate the generation of Q-Switched erbium-doped fiber laser (EDFL) by employing a multi-walled carbon nanotubes-polyvinyl alcohol (MWCNTs-PVA) as a saturable absorber (SA). The SA was prepared by embedding MWCNTs into PVA via stirring and ultrasonication. A stable Q-Switched pulse train operating at 1559.4 nm was successfully generated by employing MWCNTs-PVA SA into a laser cavity. The repetition rate and pulse width of the laser were 52.85-151.9 kHz and 6.313-2.395 μs, respectively. The maximum output power and maximum peak power obtained are 52 μW and 142.94 μW, respectively at a pump power of 63 mW. This demonstration proves that the MWCNTs-PVA based SA is suitable for the generation of Q-Switched fiber laser at 1.55 μm region.
Analysis of the Effect of Frame Variations on Improving the Quality of Streaming Network Services on the Local Network
Authors: Atthariq  , Mursydah  , Azhar  
Published: July 2020

Abstract
The quality of network services on streaming services is influenced by several aspects, one of which is the quality of the video used, the variation of frames and the right video format in streaming communication is expected to improve the quality of streaming services. In this study using IEEE 802.11n Wireless LAN devices as transmission media and 2-layer switches. The switch will classify incoming data packets at the input port based on access-list here incoming packets will be defined and marked according to the access-list attachment that will give priority so that higher-class packages will be prioritized first. This research uses HTTP protocol in streaming communication with H264 / MPEG-2 video format and frames 320}576 pixels, 352}576 pixels, 426}284pixel, 544}576pixel and 704}576pixel. In this study using WireShark as a data analysis tool and service quality on streaming networks. From the test results obtained an average delay of 86.14484 ms for MPEG-2 video codec with a resolution of 426×284 pixels 25 fps. The jitter of 13,96518221 ms, packet loss of 15.22%.
Different Techniques of Rooftile BIPV System Implementation: Materials and Constructions
Authors: Safitri Nelly , Syahyadi Rizal , Rizal Faisal , Yassir  
Published: July 2020

Abstract
Roof integrated systems which are integrating photovoltaic (PV) modules into rooftiles now become a trend of building integrated photovoltaic (BIPV) technology. BIPV refers to PV that are integrated into the building envelope (such as facade or roof) to generate clean and environmental-friendly electricity from the sun radiation. The architectural integration of PV collector modules in new construction makes possible to create glazed surfaces which, besides being an aesthetical and functional innovation, generate electricity, that is allowing the realization of solar control and electric range with consequent energy savings. However, up until now, there have been limited studies that analyzed BIPV from the materials and constructions point of views. This paper aims to expose rooftop BIPV materials that further might be used to replace conventional rooftiles such as terracotta or slate, concrete, plastic, and clay tiles. The flat rooftiles of monocrystalline- and polycrystalline-based BIPV cells are being considered in this paper. Their benefits and drawbacks are also put into account. The parameters that were compared are materials, physical constructions, installations and performances at all weather conditions. All the comparisons of those rooftiles that have been made turned out to meet the modern households’ aesthetical, energy and costs saving.
Effect of the Seeding Thickness on the Growth of ZnO Nanorods prepared by CBD
Authors: Rosli N , Halim M M , Hashim M R , Maryam W , Rusdi M F M , Muhammad A R 
Published: July 2020

Abstract
Zinc Oxide (ZnO) nanostructure (NS), with nanorods (NRs) forward-facing alignment were deposited by chemical bath deposition (CBD) method on seeded glass substrates. Two different ZnO seed layer thickness, 100 nm and 200 nm, prepared by RF sputtering were employed to investigate the effect of seed layer thickness on the characteristics of the grown ZnO NRs. The investigations on physical, structural, and optical properties were carried out through field emission scanning electron microscope (FESEM) with integrated energy dispersive X-ray (EDX), X-Ray Diffraction (XRD), and UV and visible (UV-Vis) analyses. The morphological results reveal that with a thicker seed layer, the grown NRs diameter increased double while the NRs height was maintained at 1.5 μm. From EDX, the stoichiometric ratios of Zn:O were mostly towards 1:1. While the XRD evaluates that the preferred structure was wurtzite hexagonal with c-axis orientation along (002) plane. The UV-Vis analysis showed the increased in optical band gap energy closes to the bulk ZnO at 3.37 eV, for the ZnO NRs grown on the thicker seed layer. The obtained results illustrated high quality single-crystal ZnO NRs with different diameters were realized by only adjusting the seed layer thickness.
Impact of production wells operational changes on high-viscosity oil recovery
Authors: Almukhametova E M 
Published: July 2020

Abstract
As light oil reserves are developed, the share of heavy high-viscosity oil (HVO) reserves, which are considered difficult to recover, increases in the total balance of oil reserves. Therefore, the future of the oil industry is inevitably linked to the development of highly viscous heavy oil deposits. Today, according to various estimates, epy reserves of high-viscosity oil and bitumen range from 790 billion tons to 1 trillion tons. This is more than 5 times more than the residual recoverable reserves of low and average viscosity oil. The world experience of developing high-viscosity oil deposits shows that the cost-effective development of most of them is limited due to low efficiency of oil wells and low oil recovery achieved through natural operation mode or flooding. If the first of these problems is successfully solved in recent times by drilling horizontal and multilateral wells, the second one requires the introduction of various technologies to influence the formation (thermal methods, miscible displacement, etc.), which are not always highly efficient. In this work we will consider the impact of changing the operation modes of production wells on the production of high-viscosity oil reserves on the example of the Northern Buzachi field (Republic of Kazakhstan).
Efficient operation of oil producing wells in non-stationary fluid withdrawal mode
Authors: Gorshkova K L , Alaeva N N , Sitdikova I P 
Published: July 2020

Abstract
The article deals with the efficient non-stationary well operating mode during fluid withdrawal. In this well operating mode, the optimal pump switching periods are identified to increase the oil flow rate and reduce the water content of the fluid. The purpose of the study is to improve the efficiency of pilot production wells operation. A descriptive method was used during the study, which involved analysis of the reservoir-well-pump system transient phenomena on a simulation stand, interpretation of transient graphs, comparison and synthesis of the results. The paper presents the results of experimental studies of transient pressure changes on the simulation stand for different pump operating modes. The results of the research have shown that the pressure change depends on the pump operating mode, i.e. reservoir characteristics depend on the change in the hydraulic resistance of the reservoir-well-pump system.
Four-way shell-and-tube heater with ultrasonic generator
Authors: Sidina D , Vakhitova R , Kuneevsky V 
Published: July 2020

Abstract
This article offers a heat-exchanger of improved design which allows reducing time between overhauls and maintenance. Since to date, the challenge of providing enterprises and public utility installations with heat-transfer media of required parameters is the most pressing. The collection chamber is equipped with a variable frequency ultrasonic radiator. Bays are installed with the possibility of extracting them. The case is made as one-piece and enclosing all bays. Heat exchange sections are made in the form of sectors. The dividers are equipped with windows that provide the flow of the annular medium in the opposite direction to the flow of the pipe medium. Tests were conducted on a four-way shell-and-tube heat exchanger. The heater was disassembled and inspected, after inspection it was found that scale on the heating surface was completely absent. As a result of the analysis, we can conclude that the design efficiency of the four-way shell-and-tube heater. When working on soft water and ultrasonic protection, there is no carbonate scale on the heating surface. When developing a combined vertical heat exchanger, a comparison was made with high-speed water sectional heat exchangers. The task of creating a simple and cheap design of the heat exchanger was performed by simplifying the design of the heat exchange sections and reducing the metal consumption. The stated technical problem was solved by improving the multi-pass heat exchanger with an ultrasonic emitter, which has a casing and heat-exchange sections in the form of tube bundles with tube sheets at the ends.
Forecasting technical state and efficiency of electrical switching devices at electric complexes in oil and gas industry
Authors: Tabachnikova T V , Gracheva E I , Naumov O V , Gorlov A N 
Published: July 2020

Abstract
This work is topical, since it allows predicting the physical state of the contact joints of low-voltage switching devices and to avoid their destruction, which occurs due to mechanical and chemical effects on the contacts during operation, leading to an increase in the transition resistance and overheating of the contacts. The following criteria were adopted as serviceability criteria for the contact connections of switching devices: the maximum temperature of their heating, the maximum value of the resistance of the pole of the device and its parts, as well as the excess of the temperature of the contact heated part over the ambient temperature. The authors obtained graphs of the dependence of the resistance value of the contact connections of magnetic starters and circuit breakers on the ambient temperature and load factor. The article determines the analytical dependence of the resistance of the magnetic starter contact connections on the ambient temperature. It also features mathematical models that take into account various operating conditions of switching devices, the input values of which are refined using regression analysis.
Results of mathematical modeling of the mud pump electric drive operation with the compensation unit in the circuit
Authors: Tabachnikova T V , Shvetskova L V 
Published: July 2020

Abstract
The mathematical model was developed for the mud pump electric drive with an individual compensation unit in a bypass circuit, which allows simulating the electric drive operation during the start and in steady-state modes with and without regard to the individual compensation unit. The mathematical model of the electric drive of the mud pump was developed with the aim of increasing the reliability and continuity of the drilling rig technological process in case of failure of the frequency-controlled converter of the electric drive. The use of the electric drive parameters given in relative units in a mathematical model allows replicating the obtained simulation results for other modifications of the pump electric drive. It is proved that when an individual compensating unit is included in the electric drive circuit, it reduces the loss of active power in the cable line and overhead line, and helps to increase the efficiency of the mud pump. The simulation results showed the boundary parameters of the dependent and independent variable parameters of the distribution electric network, at which the start-up of the electric drive of the mud pump is completed successfully.
Statistical analysis of dynamics of decrease in oil production after well interventions
Authors: Zagitova L R 
Published: July 2020

Abstract
The paper is based on the theoretical aspects of studying the success of oil production projects. To conduct clustering based on the empirical data from the producing well stock, a classifier has been compiled describing the types of interventions in 2013-2018. The selection of indicators was carried out on the basis of theoretical qualitative analysis. The following statistical indicators were included in the study information base: well profile, well diameter, field, horizon, and oil flow rate. The dynamics of the oil flow rate is translated into a comparable form using time synchronization. Since the initial attribute space is represented in various units of measurement, in order to ensure comparability, at the stage of formation of information array, standardization of indicators was carried out to the maximum. The interventions revealed the following combinations of factors which showed the greatest effect in terms of growth and total oil production: well profile, well diameter, field, as well as critical factors that can be interpreted as factors of ineffective interventions. The obtained factors were verified by various methods of multivariate statistical data analysis. The author suggests conclusions and recommendations for the most efficient interventions in oil wells.
Bypassing annular gas by means of jet device in oil wells with electric submersible pumping units
Authors: Saracheva D , Vakhitova R , Ivanov A 
Published: July 2020

Abstract
Nowadays the main equipment for oil production is the installation of electric centrifugal pumps. When operating oil wells with such installations, various complicating factors arise, in particular, the accumulation of free gas in the space between the outer surface of the tubing and the casing string. The experience of the ESP unit operation shows the negative impact of high gas pressure in the annular space on the efficiency of the unit. The technical solutions available today for the wells characterized by high GOR are the different types of valves, which have a number of operational shortcomings. To improve the efficiency of oil well operation, the authors suggest a jet device to bypass free gas above the dynamic level, thus reducing the gas pressure in annular space. The solution of the problem of reducing the negative effect of excess free gas in annular space is based on the study of experimental data from oilfields by using up-to-date information technology. The technology using a jet device in combination with a submersible electric centrifugal pump is proposed. The use of the jet apparatus enables reducing the gas pressure in the annular space of oil-producing wells even regardless of the discharge pressure and external ambient temperature, which increases the operating efficiency of the electric submersible pumping unit.
Evaluation of efficiency of the “K” welded repair technology of marine stationary platform with account ofaccumulated damages
Authors: Starokon I V 
Published: July 2020

Abstract
The article discusses the problems associated with calculating the residual life of welded joints of offshore stationary platforms using the example of “K” -type joints. It should be noted that the residual life of such repaired compounds is still not well understood. The author built computer models of offshore platforms, which made it possible to determine the values of the maximum amplitudes of the alternating stresses that arise during the operation of the platform. Based on this information, the author justified the conditions of the experiment. The article describes the method of repairing a crack by the method of its welding with the establishment of so-called “crack traps” along the edges of the crack. The experiment was carried out under conditions of primary and repeated fracture of the welded joint “K” – type. As a result of the studies for the described repair technology, the endurance limits of the repaired K-type welded joints were calculated, which is 13.3 MPa based on the cycle Ng = 3 * 106.
Wear evaluation methods for friction units of aircraft GTE oil systems: the lab-based methods
Authors: Hodunaev A Y 
Published: July 2020

Abstract
The problems before reliable wear evalution using traditional lab based methods, such as ferrography, x-ray and spectrography, are discussed. One of those problems is that only a subset of wear debris features is measured by each method, which does not allow one to determine wear type. Filter sample analysis technology must be developed, because oil sample is devoid of diagnostic information due to fine filtration. The solution to aforementioned problems is proposed in the form of a newly developing microwave plasma method.
Time Difference Calculation Settings for Very Short Term Electric Load Forecasting Using Interval Type-1 Fuzzy Inference System (IT-1 FIS)
Authors: Jamaaluddin  , Robandi Imam , Anshory Izza 
Published: July 2020

Abstract
Very short term electricity load forecasting (VSTLF) is done the day before forecasting every 30 minutes. This forecasting is imperative about the planning of operating plants, which are carried out in maintenance and related to economic considerations. This forecasting refers to the loading of electricity in a particular area and time. Very short-term electricity loading in the past few years has been used to predict the electricity load shortly. One method used for forecasting very short loads is using IT-1 FIS. In IT-1-FIS, the dataset is made by looking at the imposition of electricity on certain days at certain hours of the previous year. The data that calculate time difference forecast Friday 4th used Friday 3rd, 2nd, and 1st at the same hour and month of the past year. In this study, it proposed that the calculation of Time difference forecasting the 4th Friday be used data Thursday 4th, 4th Wednesday, 4th Tuesday. After entering into IT-1-FIS, the forecasting error result is 0,6123 %. This value is higher than if you use the time difference on Friday 3rd, 2nd, and 1st, which has a forecast error value of 0,4695 %. So it can be concluded that the time difference setting is very influential in the process of calculating forecasts, and the use of time difference data with the use of Friday data 3rd, 2nd, and 1st is better.