bluuebunny/crossref_metadata_2025_split huggingface dataset:
Lijiang 2.4-meter Telescope and its instruments
Authors: Wang Chuan-Jun , Bai Jin-Ming , Fan Yu-Feng , Mao Ji-Rong , Chang Liang , Xin Yu-Xin , Zhang Ju-Jia , Lun Bao-Li , Wang Jian-Guo , Zhang Xi-Liang , Ying Mei , Lu Kai-Xing , Wang Xiao-Li , Ji Kai-Fan , Xiong Ding-Rong , Yu Xiao-Guang , Ding Xu , Ye Kai , Xing Li-Feng , Yi Wei-Min , Xu Liang , Zheng Xiang-Ming , Feng Yuan-Jie , He Shou-Sheng , Wang Xue-Li , Liu Zhong , Chen Dong , Xu Jun , Qin Song-Nian , Zhang Rui-Long , Tan Hui-Song , Li Zhi , Lou Ke , Li Jian , Liu Wei-Wei 
Published: October 2019

Abstract
The Lijiang 2.4-meter Telescope (LJT), the largest common-purpose optical telescope in China, has been available to the worldwide astronomical community since 2008. It is located at the Gaomeigu site, Lijiang Observatory (LJO), in the southwest of China. The site has very good observational conditions. During its 10-year operation, several instruments have been equipped on the LJT. Astronomers can perform both photometric and spectral observations. The main scientific goals of LJT include recording photometric and spectral evolution of supernovae, reverberation mapping of active galactic nuclei, investigating the physical properties of binary stars and near-earth objects (comets and asteroids), and identification of exoplanets and all kinds of transients. Until now, the masses of 41 high accretion rate black holes have been measured, and more than 168 supernovae have been identified by the LJT. More than 190 papers related to the LJT have been published. In this paper, the general observation conditions of the Gaomeigu site is introduced at first. Then, the structure of the LJT is described in detail, including the optical, mechanical, motion and control system. The specification of all the instruments and some detailed parameters of the YFOSC is also presented. Finally, some important scientific results and future expectations are summarized.
Constraints on axion-like particles with different magnetic field models from the PKS 2155–304 energy spectrum
Authors: Bu Jia , Li Ya-Ping 
Published: October 2019

Abstract
Axion-like particles (ALPs) are a promising kind of dark matter candidate particle that are predicted to couple with photons in the presence of magnetic fields. The oscillations between photons and ALPs traveling in the magnetic fields have been used to constrain ALP properties. In this work, we obtain some new constraints on the ALP mass m
a and the photon-ALP coupling constant g with two different magnetic field models through TeV photons from PKS 2155–304. The first is the discrete-φ model in which the magnetic field has the orientation angle φ that changes discretely and randomly from one coherent domain to the next, and the second is the linearly-continuous-φ model in which the magnetic field orientation angle φ varies continuously across neighboring coherent domains. For the discrete-φ model, we can obtain the best constraints on the ALP mass m
1 = m
a/(1\ neV) = 0.1 and on the photon-ALP coupling constant g
11 = g/(10−11 GeV−1) = 5. The reasonable range of the ALP mass m
1 is 0.08 ∼ 0.2 when g
11 = 5, and the only reasonable value of the photon-ALP coupling constant is g
11 = 5 when m
1 = 0.1. For the linearly-continuous-φ model, we can obtain the best constraints on the ALP mass m
1 = 0.1 and on the photon-ALP coupling constant g
11 = 0.7. The reasonable range of the ALP mass m
1 is 0.05 ∼ 0.4 when g
11 = 0.7, and the reasonable range of the photon-ALP coupling constant g
11 is 0.5 ∼ 1 when m
1 = 0.1. All of the results are consistent with the upper bound (g < 6.6 × 10−11 GeV−1, i.e., g
11 < 6.6) set by the CAST experiment.
Climate change impacts the epidemic of dysentery: determining climate risk window, modeling and projection
Authors: Li Chenlu , Wu Xiaoxu , Ji Duoying , Liu Jianing , Yin Jie , Guo Zhiyi 
Published: October 2019

AbstractDysentery, an acute infectious disease still prevalent in many parts of the world, especially in developing counties, is caused by a group of bacteria known asShigella. Because of the sensitivity of dysentery to climate change, the relationship between dysentery incidence and climate factors has become a growing research interest. Previous studies have mainly focused on identifying key climate factors and examining the relationship between dysentery incidence and climate change. However, there has been little research on modeling and projecting the occurrence of dysentery based on key climate factors. Here we selected Binyang County in China, a subtropical monsoon climate region where epidemics are typical, as the study area. We used heat maps to extract climate risk windows (with minimum temperatures of 24 °C–26 °C, precipitation amounts of 160–380 mm, and relative humidities of 69%–85%) for dysentery transmission. We then developed a climate-dysentery model and validated its reliability. Finally, based on climate risk windows and the developed model, three earth system models (BNU-ESM, IPSL-CM5A-MR, and MIROC-ESM) were used to project future occurrence periods and incidence of dysentery under future climate condition. The projected results showed that May to August were high-incidence periods, and the occurrence of dysentery exhibited an upward trend in the future. Accordingly, we provided two practical recommendations for defeating dysentery: seasonal control in the study area, and advocacy of prevention in potentially pandemic regions. This study hopes to provide a theoretical basis for developing a dysentery warning system from the perspective of climate change.
The Antibacterial Activity of Natural Product Black Tea Theaflavins On Streptococcus Mutans
Authors: Chen Zhenyi , Wang Yina , Guo Chengyu , Li Hong 
Published: October 2019

Abstract

Objective The aim of the study is to investigate the antibacterial effect of the black tea theaflavins (TFs) on Streptococcus mutans (S. mutans) which cause the dentin caries. Methods (1) Broth dilution method was used for the determination of minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). (2) Mixed bacterial suspension with three different concentrations of TFs and recorded pH values before and after anaerobic incubation. (3) Scanning electron microscopy was used for observing bacteria morphology. Results (1) The MIC and MBC were 0.5mg/ml and 1.0mg/ml respectively. (2) With the increasing concentration of TFs, the ability of bacteria to produce acid gradually decreased. (3) TFs changed the shape of S. mutans. Conclusions Theaflavins inhibits S. mutans effectively.
Microinverter for wireless charging
Authors: Maideen Abdhulkader Jeylani A , Kanakaraj J , Mahaboob Subahani A 
Published: October 2019

Abstract
This paper presents a multi stages grid connecting single phase micro-inverter for photo voltaic utilisation. Conventional single switch flyback inverter suffers from high voltage transients across switch, which leads to a significant reduction in efficiency, the stress on the device causes an increase in cooling arrangements and also underutilization of the device as far as the ratings are concerned. The proposed topology will have an additional switch and two clamped diodes at the primary side so as to have a reduction in the switch stress which increases the efficiency. Converter is operated in Discontinuous conduction mode to have a simple control and to avoid the stability issues. Simulation results authenticate the concert of the proposed method.
Extraction and conversion of exhaust heat from automobile engine in to electrical energy
Authors: Venkatesh A , Nazar Ali A , Jaiganesh R , Indragandhi V 
Published: October 2019

Abstract
The ever increasing demand for energy is leading to rapid depletion of our resources. Inspite of the advancement in renewable technology. It is therefore important that the available energy conserved and utilized efficiently. In automobiles about 60-70% of energy out of the total heat supplied by fuel is dissipated as waste heat and just about 30 to 40 percent is transformed into useful mechanical work [1-3].This paper focus on the recovery and utilization of waste heat into useful electrical energy by using Seebeck effect where in Thermoelectric Generators (TEG) are placed on the exhaust surface for converting heat directly into electrical energy. Thermoelectric generators are highly doped semiconductor solid state devices. The voltage throughput of the thermoelectric generator is given to a dc super lift converter circuit. The output of the super lift converter is used for battery charging.
Inter turn Fault Analysis on Wound Rotor Induction Machine
Authors: Nabanita D. , Sreedhar S , Zade Neha , Bhalerao Onkar , Potdar Pratik , Raja Singh R 
Published: October 2019

Abstract
Prevention of industrial machineries against internal and external faults is mandatory for uninterrupted operation. Identifying the exact faults or anomalies in the system and predicting the machine’s health continuously is an essential preventive measure. To realize the protection system, pre-analysis of various faults under different load conditions is mandatory and hence, paper analysis a critical fault “Inter turn fault” in the wound rotor induction machine (WRIM). Inter turn fault is developed experimentally in 2.2 kW WRIM with 20 percent of internal windings shorted under different load conditions (0 to 1 per unit load). Obtained results are analysed for various electrical and mechanical parameters, and the faulty effects are revealed.
An advanced control technique for a Grid-Tied Hybrid Renewable energy system with Reciprocated sinusoidal PWM methodology
Authors: Udayakumar M D , Sabarish P , Indragandhi V , Rajkumar A 
Published: October 2019

Abstract
This research paper deals with the algorithm based on the extraction of maximum powerknown as Maximum Power Point Tracking (MPPT) fromGrid-tied renewable energy system. Thesporadic nature of solarinsolationand the variable wind speed create the necessity to find out the optimal power that makes certainof obtaining of maximum energy from the renewable resources. The optimization can be done by implementing the MPPT mechanism in the controller design. A new parabolic prediction method is suggested for tracking the MPP continuously and Reciprocated sine PWM technique is applied for minimizing the unwanted harmonic contents in the delivered output power. The simulation and experimental results show the efficiencyand outcome of the proposed methodologies with regard tothe control ofthe output power delivered as well as the reduction in harmonics from the system.
DESIGN AND SIMULATION OF PHASE SHIFTED DC-DC FULL BRIDGE CONVERTER
Authors: Poudyal Prarthiv Evan , Vigneshwar V , Kumar N K , Indragandhi V , Ali A Nazar 
Published: October 2019

Abstract
Electric and hybrid electric vehicle (EV/HEV) architectures require a small DC-DC converter to replace any conventional vehicle’s alternator. The DC-DC converter, also described as the vehicle Auxiliary Power Module (APM), provides power flow between the vehicle high voltage (HV) and low voltage (LV) DC bus. This abstract represents the phase shifted full bridge DC-DC converter scheme to design, simulate DC/DC Converter for a power rating of 80W intended for low power/auxiliary applications in electric vehicles The proposed converter is very beneficial as it can be used for 4 quadrant operation much adaptive to the unknown parameters in the PV system and these unknown parameters are estimated through the adaptation laws in the algorithm which guarantees maximum power extraction possible from the power converter for a PV system. The converter supplies AC current as per requirement. The overall stability of the converter output is analyzed by simulation. The results are compared with other existing converter results for improving power quality even further. The proposed results indicate the robustness of the proposed scheme.
A Robust Optimization Scheduling for Carrier Aircraft Support Operation Based on Critical Chain Method
Authors: Yuan Peilong , Xiao Wei , Li Zhengyang , Liang Hongyu , Zhao Zhenyu 
Published: October 2019

Abstract
The maintenance and service support of carrier aircraft (MSSCA) is a complex process involving many types of resources and activities that require optimisation which can be considered as a multi-resource constrained multi-project scheduling problem (MRCMPSP). It is of great significance to optimize the makespan and obtain a proactive robust schedule to be adaptive to the changes in the dynamic flight deck environment. This paper develops a critical chain method (CCM) for carrier aircraft support robust scheduling in a time-critical and resource-constrained operation environment. The CCM consists of developing a desirable deterministic schedule under multi resource constraints and time-critical issues, and adding a project buffer (PB) to the end of the schedule is used to get a robust proactive scheduling and deal with uncertainty. The triangular fuzzy number (TFN) is applied to describe the durations of each activities and calculate the PB size and obtain an appropriate proportionality between the activity duration and the buffer size. In the numerical research, different size simulations are designed to calculated the robust optimization scheduling. The computational results show that the CMM for carrier aircraft support robust scheduling can make a better decision in the robust proactive optimization scheduling about the resource allocation.
Water absorption and thermal degradation behavior of graphene reinforced poly(lactic) acid nanocomposite
Authors: Adesina OT , Jamiru T , Sadiku ER , Ogunbiyi OF , Adegbola TA 
Published: October 2019

Abstract
Thermal stability and high moisture absorption behaviour are major limitations of extensive application of the biodegradable poly(lactic) acid in a variety of technical application which includes the automotive sector. The use of nano fillers and appropriate processing techniques is being considered as a possible route to improve the performance of poly (lactic acid) composites. This study presents the improved performance of PLA composite via the novel processing technique of SPS. The response of the developed composite subjected to moisture absorption over a time range of 6 hrs, 12 hrs and 36 hrs indicated a negligible water uptake. Moreso, the thermogravimetric analysis (TGA) test on the composite reveals thermal stability from room temperature up until 400° C for all the samples. The thermal degradation of the composite was observed above 400°C, indicating a substantial enhancement in its thermal property.
Push-Over Analysis of RC Frame with Corroded Rebar
Authors: Colajanni Piero , Recupero Antonino , Spinella Nino 
Published: October 2019

Abstract
As known, the Italian building heritage largely consists of reinforced concrete frames designed before the ‘80s, which are, in many cases, built in the absence of specific anti-seismic criteria. Moreover, many of them, today, are characterized by bad structural conditions. Moreover, the problem of the structural conditions of the existing buildings, and their residual strength capacity, is often linked to the deterioration induced by the corrosive phenomena, which end up having a big impact on steel rebar mechanical properties. In this work, in order to investigate the influence of corrosion-damage on seismic response of existing reinforced concrete structures, a study has been carried out by analysing the non-linear behaviour of a reinforced concrete frame. The strength deterioration and reduction of the cross-section of steel rebar have been investigated and taken into account in the numerical analysis. This work shows the way in which the corrosion levels affected the push-over response, and the numerical results have been deeply analysed.
Anti-sliding Risk Model of Wet Surface for Asphalt Pavement and Test Verification
Authors: Zhong Ke , Sun Mingzhi , Liu Zhaoxu , Ma Xiaochen , Chen Fei , Ma Rong 
Published: October 2019

Abstract
A layer of water film will form on the road surface in rainy weather. Due to the lubrication effect of water film, the anti-skid ability of driving vehicles decreases, which will lead to road traffic accidents. The contact between water film, tread rubber and pavement surface texture is the most direct and concrete when a vehicle travels on wet sliding road surface. Their respective characteristics and coupling effects provide the basis and essential source of tire-road friction. Based on this, in this paper a tire-road anti-skid safety risk model under rainy weather with friction coefficient as evaluation criterion was established by analyzing the fractal characteristics of asphalt pavement surface texture and the viscoelastic properties of rubber tire. Then the correctness of the model was verified by DF test. The test results show that the trend of friction curve calculated by the model is similar to that measured by DF test, which verifies that the model can be used to calculate and characterize the anti-sliding performance of road surface in rainy weather.
Laccase Enzyme Immobilization on Ferromagnetic Support Material for Oil Palm Empty Fruit Bunches (OPEFB) Pretreatment
Authors: Rashid Shah Samiur , Huan Hu Shian , Rahim Mohd Hasbi Bin Ab , Sikder Md. Belal Hossain , Sasi Ahmed Abdulsalam H 
Published: October 2019

Abstract
Rapid development of oil palm industry causes a lot of environmental issues due to the large number of waste products such as OPEFB. OPEFB is rich in lignocellulose which can be hydrolyzed to product sustainable biofuel, an alternative sources of energy. The production of biofuel from lignocellulose waste requires pretreatment process to enhance efficiency of saccharification of the sugar content of the lignocellulose waste. Enzymatic pretreatment technique is more desirable as this technique does not generate greenhouse gas or any inhibitor that can interferes the saccharification process. Enzyme immobilization technique also involved to increase the stability of the enzyme and promote reutilization of the enzyme. In this study, laccase enzyme was immobilized on ferromagnetic particles to promote easy separation of the immobilized laccase enzymes from the reaction media. The result shows that laccase enzyme immobilized on the nickel particles which encapsulated with silica. 0.235 IU/g of immobilized laccase degraded 58 % of the lignin content in 0.5 g of OPEFB after 24 hours. Pretreated OPEFB increase the efficiency of saccharification by 161% in compare with the untreated OPEFB.
The Success Model of TQM on Managerial Performance
Authors: Fadli  
Published: October 2019

Abstract
The objectives of this study were to analyze technology of information, measurement of performance systems and systems of prize for performance of managerial of total management quality as a moderating variable. currently the managerial performance of PT. Pegadaian Kanwil I Medan is good, but the management has not been satisfied with the results to date. Therefore, this research is conducted to find out factors that can further improve management performance. The population in this study were employees at managerial level at PT. Pegadaian Kanwil I Medan (Persero). The method of determining the sample used in this a study is using criteria/purposive sampling method, primary data is the data used in this study, while multiple regression analysis method used on the data processing and interaction testing. This study showed that technology of information variables and measurement of performance systems partially had a positive significant effect on performance of managerial. TQM variables have a significant influence, this means that moderation is able to reinforce the influence of technology of information, measurement of performance systems and systems of reward for performance of managerial with positive coefficients.
Analysis of The Community Satisfaction Index on Medan Rumah Kita Public Service Application
Authors: Nasution M A , Regif S Y 
Published: October 2019

Abstract
This study is about the Public Satisfaction index of the management of public service applications managed by the Office of Communication and Information of the City of Medan using a Play Store-based system on smart cell phones or android. This application system provides information, facilities and service categories for the people of Medan City in submitting complaints to problems of public facilities. The management of this application is called Medan Rumah Kita or MRK. The main objective is to fulfil the NPS (New Public Service) as part of the implementation managed by the Medan City government with the main goal being community satisfaction in the city of Medan. The MRK (Medan Rumah Kita) application, which began in 2016, is expected to increase the contribution of the role of the community in improving the system of government work that is more effective and efficient in accordance with the principles of good governance and e-government. This study has an important objective, namely to provide a measurable analysis of the ability of state civil apparatus in managing the Medan Rumah Kita application for the public interest so that it becomes one of the stages and achievements that become a reference for improving access to public services in Medan City. The population in this study were people who had downloaded and used Medan Rumah Kita (MRK) application. This study is using a questionnaire as a data collection tool, this study also uses research respondents which is gathered from the Play Store application that consist of 1500 people who have downloaded MRK application, with the total sample is 306 people. The result shows that 75.95% of the respondents are in the “GOOD LESS” category (at intervals of 2.60 - 3.064 or 65.00 - 76.60).
Separation of Basic Words in Angkola Batak Text Documents using Enhanced Confix Stripping Stemmer Case: Mandailing Ethnic
Authors: Muchtar M A , Jaya I , Nababan Manguji , Andayani U , Siregar Lisa Noprianti , Nababan Erna B , Sitompul Opim S 
Published: October 2019

AbstractStemming is the process of separating essential words from an affixed word. Stemming works by eliminating morphological variations which attached to a word by removing affixes in a word with a dictionary as a reference to the stemming process. One effective algorithm for resolving stemming in Indonesian is an Enhanced Confix Stripping Stemmer algorithm. In this case, the improved Confix stripping stemmer algorithm is implemented for the separation of essential words in the Angola-Mandailing Batak language document that has different phonologies and morphologies with Indonesian. The documents used are Latin character documents in the Angkola-Mandailing language that goes through the stages of filtering, folding cases, and tokenization before stemming. The stemming process is done by removing particles, ownership, suffixes, and prefixes. After testing this research, it was concluded that this algorithm was able to separate essential words in the Angkola-Mandailing Batak language with accuracy 87,05%.
Interactive Learning Media of the Solar System for Children using Kinect
Authors: Rahmat R F , Amalia N , Faza S , Muchtar M A , Budiarto R 
Published: October 2019

Abstract
Children education adheres to the emphasis of playing while learning or learning while playing. Playing using the body muscles can stimulate the body senses of a child and assist the child in exploring the surroundings. Children discover and learn new things or skills through playing a game. In creating an interactive learning experience to stimulate the brain of a child, a solar system is included in the formal education curriculum packed in an interactive media using Kinect where the children will play an active role in studying the solar system. The Kinect sensor detects 23 joints of a child to be used to move the 3-dimensional astronaut object directly on the body (coordinates mapper) and uses the background removal on the image to separate the background and the child pixels, so the child seems to be beside the planet. Based on the test results using the respondents of 50 children, it was shown that the system effectiveness level for the children is 86%.