bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and Implementation of an EOG-based Mouse Cursor Control for Application in Human-Computer Interaction
Authors: Kabir Ahsan-ul , Bin Shahin Faisal , Kafiul Islam Md. 
Published: April 2020

Abstract
Human Computer Interaction (HCI) has turned into an emerging technology due to the advancement in the field artificial intelligence and biomedical engineering. Acquiring different bio-signals such as Electro-oculography (EOG), Electromyography (EMG) and Electroencephalography (EEG) to control external machine or computer is the essence of HCI technology. In this research, we attempt to extract the EOG signal from different ways of eye movements and process it for HCI application. By utilizing Arduino, EOG data can be transmitted to computer and those signal characteristics is analysed through MATLAB. We have designed and implemented hardware and interfaced it with software to control a computer mouse cursor only by eye movement. Certain classification module like Support Vector machine (SVM) and Multilayer Perceptron (MLP) are used to classify different EOG data generated from different eye movement. According to the eye position, cursor automatically moves in that specific direction and PyAutoGUI module is used for this task. Results after experimentations with different subjects to control mouse cursor in real-time show that the average classification accuracy can reach up to 93% across all directions.
Robot Positioning Error Compensation Method Based on Deep Neural Network
Authors: Hu Junshan , Hua Fangfang , Tian Wei 
Published: April 2020

Abstract
Industrial robots are widely used in intelligent manufacturing industry because of their high efficiency and low cost, but the low absolute positioning accuracy limits their application in the field of high-precision manufacturing. To improve the absolute positioning accuracy of robot and solve the traditional complex error modeling problems, a robot positioning error compensation method based on deep neural network is proposed. The Latin hypercube sampling is carried out in Cartesian space, and the influence rule of target attitude on error is obtained. A positioning error prediction model based on genetic particle swarm optimization and deep neural network (GPSO-DNN) is established to realize the prediction and compensation of the positioning errors. The experimental results show that the positioning error compensation method based on GPSO-DNN presents good compensation accuracy. The positioning error is reduced from 1.529mm before compensation to 0.343mm, and the accuracy is increased by 77.57%. This method can effectively compensate the positioning error of the robot and greatly improve the positioning accuracy of the robot.
Flexible Adaptive Control of Snake-Like Robot Based on LSTM and Gait
Authors: Ouyang Sheng , Wei Wu 
Published: April 2020

Abstract
This paper presents a flexible control method for snake-like robots to adapt to the environment autonomously. This method enables the snake-like robot to sense the environment and adjust autonomously according to the changes of the environment. For example, snake-like robots climb pipes with varying diameters. In order to achieve efficient and flexible motion, we adopt closed-loop gait control. This control method uses a parameterized sine wave (gait function) and long short-term memory network (LSTM) model. Because of the structure of LSTM is suitable for prediction of time series data, we use LSTM to predict the changes of joint angles that can best represent the shape change of snake-like robot, and integrate the predicted joint angle values with the gait values to realize the control of robot. Because this control method will eventually allow the snake-like robot to move autonomously in the changing environment, we can achieve the flexible adaptive behavior of the robot.
Wind, sun, and wildlife: do wind and solar energy development ‘short-circuit’ conservation in the western United States?
Authors: Agha Mickey , Lovich Jeffrey E , Ennen Joshua R , Todd Brian D 
Published: April 2020

Abstract
Despite the trade-offs between renewable energy development, land use, humans, and wildlife, wind and solar development continues to transform the western US into a green energy landscape. While renewable energy reduces carbon emissions and reliance on fossil fuels, many studies have emerged on the associated ecological and social impacts of this technology. Here, we review the current state of knowledge on the nexus between wildlife conservation and energy development in the western US since 2010. We revisit pertinent ecological concepts presented in earlier reviews to assess how far the field has progressed in mitigating negative effects. Specifically, we examine: (i) recent trends in the literature on how wind and solar energy development impact wildlife in the US, (ii) how siting and design of development may maximize energy benefits while minimizing negative effects on wildlife, (iii) the availability and benefits of before-after control-impact studies, and ultimately (iv) how impacts of renewable energy development on wildlife may be mitigated. We also provide case studies on the desert tortoise and greater sage-grouse, two conservation-reliant umbrella species in the western US, to highlight efforts to mitigate the effects of solar and wind energy development, respectively. We recognize that many other species are affected by renewable energy development, but desert tortoises and sage-grouse are representative of the conflicts that need to be addressed. Our review concludes that mitigation can be improved via use of spatial decision support tools, applying novel wildlife deterrence and detection systems developed for existing installed facilities, and incorporating impact studies that provide managers with conservation metrics for evaluating different future development land-use scenarios.
Promoting agroforestry model in increasing land cover to sustain community livelihood in Paru Village Forest
Authors: Octavia D , Rachmat H H 
Published: April 2020

Abstract
In forestry sector, social forestry gained more concern nowadays and subjected to create new economic growth. Agroforestry is a silviculture practice that is suitable to be applied in areas with social forestry schemes. In this condition, Agroforestry is one of solution to restore degraded forest and other form of landscapes which can cover ecological, economical, and social aspect. This paper aim to gain information of plant survival rate in the establishment of agroforestry plot for a total 8 hectares in Paru Village Forest under Sijunjung Forest Management Unit, West Sumatra by planting 9 tree species (both of forest tree and fruit tree/multipurpose tree species) and 3 seasonal crops species. We applied different planting technique for two types of land status. For protection forest was applied by gap planting technique while for other land status area was applied Intensive Artificial Regeneration (IAR) with planting distance of 8 m x 8 m. Data collection covered for survival rate and initial height measurement. Growth percentage was observed at ages 1, 6 and 12 months after planting, respectively 95.2%; 94.5% and 93.5%. Survival rate is good enough for 12 months after planting, supported by community participation which looks high in maintaining their crops.
Business Model Development of Oil Palm Empty Fruit Bunch and Trunk Carbon Nanofibers – Based Water Purifier
Authors: Fadillah A , Hartoyo A P P , Solikhin A 
Published: April 2020

Abstract
Indonesia have confronted the decrease in water quality due to mining, industry, agricultural practices, and waste disposal. Carbon nanofibers derived from oil palm empty fruit bunch (OPEFB) and oil palm trunk (OPT) have the economic potential to be commercialized as water purifier. This paper aims to analyze the potential economic value by means of a business model from OPEFB and OPT carbon nanofibers. The methods used in this paper were the qualitative method and the business model development. The result showed that the carbon nanofibers based–water purifier has high economic value. The economic value of this innovation is predicted to increase from $1.6 billion in 2007 to $6.6 billion in 2015 in the market. Furthermore, the suitable business model for water purifier from OPEFB and OPT carbon nanofibers was the fabless business model (FLBM). That model is more focused on the core competencies (research, design, development) and marketing of the nanotechnology products. This FLBM was suitable for the new startup business with innovative technology to enter the market by collaborating with key partners (manufacture, government, academic, research center, and community).
Effect of chopping on yield, physico-chemical properties, and chemical composition of Clove (Syzygium aromaticum L.) leaf essential from three varieties
Authors: Pujiarti R , Humairoh A , Wibisono M G , Hardiyanto E B 
Published: April 2020

Abstract
Clove oil is one of the highest potential essential oil to be developed and traded in Indonesia. Several factors that can affect the yield and quality of the clove oils such as material pretreatment and plant variety. The purpose of this study was to assess the yield and quality of clove leaf oil between three plant varieties (var. A, var. B and var. C) without leaf chopping and with leaf chopping (chopped with a size of diameter ± 0.5-1cm). Chemical compositions of the oil were analyzed using GC-MS and the physico-chemical properties and measured based on SNI 06-2387-2006. The results showed var. C with chopping treatment produced the highest yield (2,67%). GC-MS analysis showed that the main compound of clove oil was eugenol (66.10 – 72.29%), which the highest content obtained at whole leaves var. A. Varieties of clove plants and leaves chopping have effects on yield, amount and percent of chemical compounds, but no significant effect on physicochemical properties. Var. A has best clove leaf oil quality, whereas var. C with chopped treatment produced the highest yield.
Selection of adaptive teak provenance in Gunungkidul
Authors: Kurniasari E , Indrioko S , Ratnaningrum Y W N 
Published: April 2020

Abstract
The teak planting program for rehabilitation and research, as well as for social forestry purposes, requires a constant supply of planting materials with good phenotype and genetic qualities. Most of teak seeds in Indonesia are collected from seed production areas, and even from unidentified stands when the improved stands are unavailable. Vegetative material production from hedge orchards has also been used in a lesser number due to the more complex production techniques and the more expensive cost. Therefore, it is a need to look for any other alternatives for teak planting material supplies. The success of Wanagama on rehabilitation of critical land area suggested an idea to increase the value of Wanagama plantations as a seed source. A 31 years old provenance trial plantation PPGM-T73-88 consists of 21 provenances, located in Compartment 17 Wanagama, made in 5 blocks, 4 tree plots, and 4 m x 4 m spacing, was selected to be an alternative seed source. This study was aimed to evaluate the possibility of the plantation to be a seed source, by selecting the adaptive provenances based on survival rate, height, and diameter. This study concluded that Malabar and Central Province provenances have the highest survival rate. Kouai and Deling provenances are the highest rank of height and diameter characteristics. Respectively, the heights of both provenances are 14.58 m and 13.86 m; the diameters are 31.95 cm and 34.73 cm. Key words: teak, provenance trial, seed source, Wanagama
Biodiversity exploration of host trees (phorophyte) of epiphyte orchids in the natural habitat
Authors: Soetopo L , Utami A P 
Published: April 2020

AbstractEpiphyte orcids host trees grow naturally in tropical rainforests. Nowadays tropical rainforest destruction could decreased these specific host trees alongside with the various epiphyte orchids. Little information could be found on epiphyte host trees in Indonesia. The aim of this research was to explore the biodiversity of epiphyte orchid host trees (phorophytes) at Highway Forest Park Raden Soeryo and supported by exploration data in 2003, 2005, 2018 at Bromo Tengger Semeru National Park, and in 2006, 2007 at Highway Forest Park R. Soeryo. Exploration of epiphyte orchid host trees at Jogging Track site and Coban Watu Ondo site, Highway Forest Park R. Soeryo, East Java was conducted in May-July 2019. The research methode was carried out using a purposive sampling methode at Jogging Track and line transect at Coban Watu Ondo. From the main transect 30 plots were made with the area of each plot 20 m x 20 m with a distance between plots of 60 m at Jogging Track site and 100 m at Coban Watu Ondo. From the exploration we found at Jogging Track site 15 species of 173 hosts trees with diversity index 1.57 (medium). While at Coban Watu Ondo 10 species of 171 host trees with diversity index 1.52 (medium). Host trees bark characterizes by rough. grooved, hard skin no latex, tree diameter 20.00-85.00 cm. canopy medium-sparse. The biodiversity of porophyte trees exist in the area of National Park Bromo Tengger Semeru and Highway Forest Raden Soeryo south of Mt Arjuno Lalijiwo and east of Mt Anjasmoro regions is quite diverse.
The use of mycorrhizae in production of clonal seedlings of superior teak, a prospective tree species for increasing agroforestry system productivity
Authors: Rosyidah U , Nurjanto H H , Widiyatno  
Published: April 2020

Abstract
Agroforestry system which consisted of Teak as the main tree component has been widely established in Java. Teak is selected because it produces luxurious wood. The demand of Teak wood increases continuously, therefore Superior Teak becomes fascinating. Seedlings of selected Superior Teaks can be obtained through clonal propagation. The growth of Teak Clonal seedlings can be improved further by application of mycorrhizal fungi which help roots to obtain essential nutrition and water. This study aimed to determine the relationship between root biomass and mycorrhizal fungal colonization with growth of the seedlings. This study used four selected Teak clones (WG1, WG2, F71, and D15). Shoot plantlets were planted on cocopeat: rice husk charcoal mixture (1:1 v/v) in polybags and inoculated with soil containing mycorrhizal spores. Growth parameters were measured fortnightly. Four months after mycorrhizal inoculum application, the plants were harvested and assessed for lateral root number and length and biomass dry weight. Sample of roots were stained with 0.05 % tryphan blue lactoglycerol and assessed for mycorrhizal infection. The results showed that survival and rooting rates varied among clones, ranging from 45-83% and 23-63%, respectively. In the nursery condition, growth of all clonal seedlings was strongly correlated with mycorrhizal colonization varied between positive and negative correlation. The correlation varied among clones, being the greatest at clone WG1, D15, F71 and the least at clone WG 2. The growth and productivity of the selected superior teak in the agroforestry system may be enhanced by application of suitable mycorrhizal inoculum.
Studies on the anti-oxidative ability of quinones in natural ester based insulating liquids for transformers
Authors: Zeng Miao , Cai Shengwei , Chen Cheng , Guo Huihao , Shao Minfeng , Li Hui , Yin Jing , Chen Jiangbo , Yin Guochuan 
Published: April 2020

Abstract
Due to the unsaturated olefinic structure of natural esters, their antioxidation ability is generally poorer than that of the mineral oils, thus certain antioxidants were commonly added as the additives to improve the oxidative stability of natural ester for their service as transformer oils. The present study reported the influences of adding quinones as additives on the oxidative stability of versatile natural esters. It was found that, under the accelerated oxidation conditions, added quinones could improve the oxidative stability of these tested natural esters through decreasing their acidic values, viscosity increase and dielectric losses to certain extent, thus providing a new category of antioxidants to improve the oxidative stability of natural ester based transformer oils.
Rare-earth elements and isotopic geochemistry of thermal waters of the Okhotsk sea shore, Far East of Russia
Authors: Bragin I.V. , Chelnokov G.A. , Kharitonova N.A. , Veldemar A.A. , Pavlov A.A. 
Published: April 2020

Abstract
New data on hydrogeochemistry of thermal waters of the Okhotsk sea-shore (Ulskiy, Annensky Tumnin, Talaya, Paratunka, Dagi and Lesogorsky) is presented in the paper. Sikhote-Alin ridge thermal waters with crystalline host rocks refer to sulfate-hydrocarbonate or hydrocarbonate sodium fresh waters with elevated silicon content (up to 41 ppm), lowest TDS (<0.3 g/L), alkaline (9.1<pH<9.3). Thermal waters of Talaya and Paratunka refer to sedimentary basins, resulting in presence of sulfate and chlorine in main ions, higher TDS (1-1.2 g/L), lower pH (∼8.6) values and reducing conditions (-82>Eh>-157 mV). Geological conditions were proved by shapes of REE patterns (positive Eu-anomaly for sedimentary basins). Stable water isotopes led us to divide roughly studied waters into two groups, using peculiarities of moisture source for water recharge areas. First group: Tumin, Annensky and Talaya with more “continental” climate as for mainland thermal waters, forming isotopically lighter water and second group: Ulskiy, Paratunka, Dagi and Lesogorsky, with “marine” climate of Sakhalin and Kamchatka, forming isotopically heavier water.
A study of the effect of air temperature on the possibility and rate of formation of nitrogen oxides in boiler flue gases
Authors: Balandina O A , Puring S M , Vatuzov D N , Filatova E B 
Published: April 2020

Abstract
We consider the mechanisms of formation of nitrogen oxides in boiler flue gases. Thermodynamic calculations are used to determine the possibility and rate of formation of nitrogen oxides in the temperature range from 25 to 2000°C. We apply the methods of geometric thermodynamics to demonstrate the changes in the Gibbs free energy of nitrogen oxides formation reactions and determine the conditions of achieving the chemical equilibrium for these reactions. An analysis of concentrations of formed nitrogen oxides and temperatures of the jet flame under different conditions of mixture formation was performed. We produced and analyzed a number of diagrams of distribution of the flame temperatures and nitrogen oxide concentrations in the calculation area for the temperatures of the oxidant of 20, 60, 100, 150 and 200°C. Mathematical simulation of the process of gaseous fuel combustion was performed using FlowVision software package. The analysis of the results showed that the decrease in the temperature of the air supplied as an oxidant results in a considerable drop in the concentration of nitrogen oxides in flue gases without any significant impact on the changes of the flame temperature. The results of the study can be used in addressing the problems of optimization of boiler plants in order to reduce harmful flue gas emissions.
The study of the heat transfer process in bodies with internal heat sources of variable power
Authors: Eremin A V , Gubareva K V , Ilyasov A A , Trubitsyn K V , Iglin P V 
Published: April 2020

Abstract
An analytical solution to an unsteady heat conductivity problem based on the method of using a new function for a plate under first-order boundary conditions with time-varying internal heat sources was obtained. Obtaining an exact analytical solution for such problems has encountered serious mathematical difficulties. However, analytical solutions have significant advantages compared to numerical ones. For example, solutions obtained in an analytical form make it possible to perform the parametric analysis of the system under study, parametric identification, programming of measuring devices; controlling the production process, etc. Therefore, approximate analytical methods have been widely used. So, this paper is devoted to the development of such a method. The solutions obtained have a simple form of algebraic polynomials without special functions. This allows doing the research in the fields of isotherms and determining their velocities.
Method for determining the characteristics of a gas-steam chp with a steam turbo drive of a compressor
Authors: Tian V K , Gulina S A , Sheludko L P , Biryuk V V , Goryunova I Y 
Published: April 2020

Abstract
A new type of maneuverable combined-cycle plant with a steam-turbine drive of a low-pressure compressor is considered. The analysis of its technological processes in the generation of electric and thermal energy in heating and non-heating periods of the year is carried out. It is shown that in heating conditions, the burning of additional fuel in the afterburner between the stages of the evaporator of the utilizer boiler provides an increase in its steam production, maneuverability, thermal and electric power of the CCGT-CHP plant. The influence of the chemical composition and thermophysical properties of natural gas on obtaining the required excess air in the combustion chamber of a combined cycle gas turbine is considered. A mathematical model of technological processes is developed. The influence of deep utilization of the heat of the flue gases of the utilizer boiler on increasing the efficiency and improving the environmental characteristics of the gas-steam plant of a thermal power plant was recorded.
Application of phase portraits for estimation of reactive power of electric circuits
Authors: Andrianov D P , Badalyan N P , Kolesnik G P 
Published: April 2020

Abstract
In this paper we consider the principal possibility of using the estimation of the reactive power of electric circuits by phase portraits of electric current oscillations. The shift of the phase angle of current and AC voltage oscillations relative to each other is displayed on the phase portrait of oscillations by bifurcation of the phase trajectory. The region described by the phase trajectory corresponds to the reactive power. Reactive power must be kept to a minimum to produce an energy efficient power supply. As an optimization criterion it is proposed to use the size of the phase portrait area of stationary oscillations of alternating current. Simulation of the optimization process was carried out on the basis of numerical solution of the system of differential equations using dynamic programming methods. Typical functions of numerical solution of systems of differential equations and optimization of the target function, available in mathematical packages, were used.
Analysis of applicability of conventional units in power grid companies in the Russian Federation
Authors: Dronova Y V , Chernenko N A , Tikhonova D A , Shinkaryuk D I 
Published: April 2020

Abstract
Value formation for energy transmission services in the Russian Federation is carried out under strict state control, basing on the widespread practice of benchmarking or “best practice” methods. The basis for calculating some of the best indicators is the concept of “unit credit”. (c.u.). Over the past few years, the issue of the “unjustified” application of the CU and the need to review it has been raised several times. The analysis of the current normative documentation has shown that use of different documents allows changing the results of calculation of the basic items of the expenses using c.u. as the basic indicator, for example, the expenses for maintenance service and repair (MRO) regarding a labor payment. This situation arises in the process of transferring the actual labor intensity of maintenance and repair works in c.u. The value of deviation of labor inputs determined by the difference in periodicity and labor intensity leads to significant distortion of result when forming costing and defining the optimum or the most effective values. Thus, these differences can become a tool for manipulation by energy companies when costing making use of benchmarking.