bluuebunny/crossref_metadata_2025_split huggingface dataset:
Studied of Tritium Breeding Ratio on HCLL (Helium Cooled Lithium-Lead) Fusion Blanket by Using MCNP Program
Authors: Rosidah M Indah , Suud Zaki , Yazid Ilham Putra 
Published: May 2020

Abstract
The fusion reactor using a tritium-deuterium reaction is going to be a prolific source of 14.1 MeV (80% of fusion energy) neutrons, which will release from the plasma. This reactor features a major radius of 8.1 m and a minor radius of 2.5 m. Thus, one part of the fusion reactor, which is a basic design is Blanket Module (BM). One of the two European blanket concepts is Helium Cooled Lithium Lead (HCLL). HCLL blanket uses Pb-Li as a neutron multiplier, Li as a breeder, and He as a cooler is in high pressure (8 MPa). The study goal is to investigate the feasibility of blanket reactors, such as neutron analysis, shield efficiency, and tritium breeding capabilities. This calculation was simulated to achieve TBR value more than one, which will assure tritium self-sufficiency in steady-state operations. The MCNP program with Monte Carlo is a tool for calculating this. The neutron flux produced by this simulation shows that the reactor does no leak. And the production of tritium from breeding blanket will be optimal when the utilizing of breeding materials is Pb-Li.
Neutronic Analysis of Lead208-Bismuth Eutectic-Cooled Modified CANDLE Reactor with Core Geometry Variations
Authors: Widiawati Nina , Su’ud Zaki , Irwanto Dwi , Permana Sidik , Sekimoto Hiroshi 
Published: May 2020

Abstract
Lead208-Bismuth Eutectic (LBE)- cooled reactor is one of the Generation IV reactors. The fourth-generation has several objectives: economic competitiveness, inherent safety, minimize radioactive waste, and non-proliferation. Modified CANDLE burnup scheme is one solution to fulfil these objectives. The scheme does not need fuel enrichment and reprocessing Pu from LWR. Lead208-Bi eutectic was employed as a coolant of the reactor due to its low neutron absorption cross-section. However, However, it is necessary for surveying the neutronic core design. In this study, we compared the core neutronic among the variations of core geometry with equal volume of Pb208-Bi eutectic-cooled Modified CANDLE reactor. The calculation is performed by PIJ and CITATION of SRACs module. The Pancake cylindrical (larger diameter) has the highest K-eff and the lowest-peaking factor among of balance and tall cylindrical.
The effect of radiation source distance to the scintillation detector based on Monte Carlo simulation
Authors: Junios  , Haryanto Freddy , Su’ud Zaki , Novitrian  
Published: May 2020

Abstract
The variation of the source distance to the detector causes a change in the count value. The aims were to study the effect of source distance variation to a detector. This research simulated count value detected by the scintillator detector with a variety of distance to the radiation source using EGSNRC tutor.3 Monte Carlo. The Energy of 60Co radiation source was modeled monoenergetic, so energies 1.17 MeV and 1.33 MeV are handled separately. The geometry of this source was assumed to be the point source. The simulated medium was divided into three regions, vacuum, scintillation detector, and vacuum. The range of detector distance variated from 5 to 9.5 cm from the source and used 109 particles. The cut-off Energy for electrons 0.512 MeV and photons 0.01 MeV. The output score energy deposited in the scintillation detector. The count value for each region was analyzed and compared. The changes of distance from 5 cm to (5.5, 7.5, 8.5, and 9.5) caused an increase of a count in the Compton area of 5.1%, 27.1%, 35.9%, and 44.6%, respectively. While in the photopeak area there was a decrease of 2.7%, 12.2%, 15.8%, and 19.0%, respectively. There was a change in count value on the distance variation caused by the quantity of source changed. The detector captures less quantity in the photopeak area.
Study of Modified CANDLE Burnup Scheme In A Helium Cooled Fast Reactor Using Uranium-Plutonium Nitride
Authors: Syahputra T S , Razak Abdul , Su’ud Zaki 
Published: May 2020

Abstract
The startup strategies for neutronic analysis Gas-Cooled Fast Reactors with scheme Modified CANDLE have been investigated. This research used natural uranium and spent fuel PWR in the starter core. The reactor power level was set at case 800 MWth, 900 MWth, and 1000 MWth, while the fuel fraction was varied at 50%, 55%, 60%, and 65%. The calculation was performed by using SRAC-CITATION system codes, with two-dimensional R-Z cylindrical cell models. In this Modified CANDLE burnup scheme start-up strategy, the active core was divided into ten regions (region-1 until region-10) with similar volume in the axial direction and two regions in the radial direction. The fresh fuel of natural Uranium was initially put in region-1 while another was filled with a mixture of spent fuel PWR and natural Uranium. After each cycle of burnup, defined by 10 years, the fuel from region-1 was shifted to region-2, and the fuel from region-2 was shifted to region-3. This was done consecutively until all the regions have been refueling while region 1 is refilled with natural uranium fuel. An optimum design was achieved in the reactor by 60% inner and 65% outer fuel fraction for case 800 MWt. The ratios of a peak to average power density were 1.37, with power density of 187.43 W/cc.
Study on the Effects of Enrichment and Fraction of Coated Fuel Particles on Fissile Utilization of 100 MWt Prismatic-type of High Temperature Gas Reactor
Authors: Pratama Ayu Lia , Irwanto Dwi 
Published: May 2020

Abstract
High Temperature Gas-cooled Reactor (HTGR) is one of Generation-IV reactor technology that has graphite moderate, Helium gas-cooled, and Coated Fuel Particle (CFP) layered by Tristructural-Isotropic (TRISO). The HTGR has an outlet temperature of around 1000°C that can be utilized for many co-generation processes other than to generate electricity. Due to characteristics of the CFP and TRISO, utilization of fissile material during reactor operation becomes important. This study aims to analyze the effects of enrichment and fraction of CFP on the fissile utilization of 100 MWt HTGR for two different fuels; UO2 and (Th-U)O2. Fissile enrichment is analyzed from 1-20% while the fraction of CFP from 10-60%. Using SRAC2006 code and JENDL-4.0 as nuclear data library, calculation and analysis are performed to find the optimal values of several important neutronic parameters.
An Optimization Method for Measurement Matrix Based on Double Decomposition
Authors: Mao Zhaoyang , Li Lan 
Published: May 2020

Abstract
This paper introduces a novel method of measurement matrix in compressed sensing. In order to overcome the difficulties associated with coherence of measurement matrix, we propose double optimization methods by eigenvalue decomposition and singular value decomposition under mild conditions. An efficient algorithm (SVD-EIG) is used to recover sparse inputs from the optimized measurement matrix, based on the adaptation of the optimized matrix by eigenvalue decomposition. Lastly, compared with the other methods as the same sampling rate, we demonstrate through simulations that SVD-EIG algorithm can improve accuracy and probability of the reconstruction.
Development of Thin Film Thermocouple Test System for Transient Temperature Measurement
Authors: Xi Zhu , Wanqing An , Chang Liu , Xiaoyuan Yang , Xinming Su , Yan Zhou , Zhenwei Li , Zeyuan Liu 
Published: May 2020

Abstract
In order to achieve accurate temperature measurement in a fast temperature change environment, a set of thin film thermocouple test system for transient temperature measurement is designed and developed. The system consists of cold junction compensation and data collector. The temperature of the film thermocouple can be obtained in real time through the upper acquisition software. The hardware composition and software design of the thin film thermocouple test system are given. The data acquisition terminal and coordinator program are designed to control the temperature signal of the MAX31855 to collect the sensor, realizing the real-time transmission of temperature data between the sensor and the computer. In order to verify the actual application effect of the system, the matching, stability and reliability of the temperature acquisition system and monitoring software, the FLUKE-9144 dry calibration furnace was selected as the heat source for the temperature test. The test results show that the system has fast acquisition speed, high measurement accuracy and good temperature stability.
Overview of the Development of Rotary Steerable Systems
Authors: Li Fei , Ma Xueying 
Published: May 2020

Abstract
Rotary steerable system remains the development focus of current drilling technology. It is essential for China’s unconventional Oil and Gas development. This paper outlines the research and development history, classification, development status of the rotary steerable system, and summarizes the advantages and disadvantages of different systems. Moreover, the prospects of the intelligent RSS technology is explored, and the outlook for the future development of the steerable drilling technology is presented.
A novel coplanar system with a minimal anisotropic effect
Authors: Zhang Miaoyu , Wu Jie , Yanping Liu 
Published: May 2020

Abstract
To obtain the response of the novel coplanar system, we use an analytic method to solve horizontal component of electromagnetic field in the anisotropic stratigraphic model by introducing the magnetic Hertz vector and the magnetic Hertz scalar from Maxwell equations. This paper examines anisotropic response characteristics between novel coplanar system and traditional coplanar system. The negative response area of the proposed coplanar system is decreased. Compared this with traditional coplanar system, the anisotropic effects have the same trend; the affected amplitude of novel coplanar system is far less than that of the traditional coplanar system. The results of experiments demonstrate the superiority of the proposed coplanar system.
Study on acoustic transmission characteristics of BHA in directional well
Authors: Xie Haiming , Zhou Jing , Zhang Peifen 
Published: May 2020

Abstract
Acoustic telemetry technology while drilling may effectively solve the practical and speed bottleneck of downhole information transmission, but its channel characteristics are subject to the influence of drill string structure in the channel. According to the requirements of reservoir exploitation and drilling technology, the directional well technology is becoming more complex, and the changeable bottom hole assembly (BHA) in the well causes the aperiodicity of acoustic channel. Through the modeling and analysis of BHA under different drilling technology, the characteristics of various aperiodic channels are obtained, and compared with the characteristics of ideal periodic channels, the acoustic transmission characteristics of drill string in directional well are obtained. The aperiodicity brought by BHA makes the high frequency section of the channel seriously attenuated, so the number of aperiodic drilling tools used in the acoustic remote transmission channel needs to be strictly controlled. It can be excluded from the channel if necessary.
Research on Analog Signal Source of Gamma Ray Spectrum Logging Technology
Authors: Tang Jun , Li Yiying , He Jia , Wang Simeng , Wang Hui , Zhang Chaoyang 
Published: May 2020

Abstract
Gamma ray spectrum logging tool acquires reservoir information by detecting gamma ray from formation. It has strict requirements for preservation and use, which is not convenient for college teaching. This paper introduces the design of an analog signal source for gamma ray spectrum logging tool, which generates random number based acceptance-rejection method. These random numbers are converted into electronic pulse signal by data acquisition system. It can simulate the electric pulse signal obtained from gamma ray through stratum. The statistical law of energy spectrum from simulation signal source accords with the probability distribution law of pulse signal generated gamma ray from formation. The analog signal source of gamma ray spectrum logging tool can generate simulation gamma ray logging signal without formation model and radiation source, which is of great value for efficient teaching.
Distribution Characteristics and Edge Detection of Electromagnetic Field in Two Beds Formation Based on Analytical Solution
Authors: Wu Jie , Li Ye 
Published: May 2020

Abstract
After decades of development of the Chinese petroleum industry, complex oil and gas reservoirs have become the main battlefield for oil and gas field detection and development, which pose severe challenges to geosteering drilling technology that uses integrated logging and conventional logging-while-drilling tools to locate and predict formation interfaces. Based on the developed software for the distribution of forward and lateral detection electromagnetic fields, this paper calculates and analyzes the distribution characteristics of electromagnetic fields at different distances in front, and studies the lateral detection characteristics based on the half-coil of the electric field. The results show that the influence of boundary on the field is revealed according to the distribution characteristics of electromagnetic fields at different distances in front. The 1-3m receiving-transmitting short-pitch half-coil have approximately the same edge detection distance, and when the frequency is less than 20 kHz, the edge detection distance is more than 30m in two beds formation of 0.01S/m and 1.0S/m.
Borehole transient electromagnetic array based relative attitude determination for relief well drilling
Authors: Ling Yang , Bo Dang , Changzan Liu , Linkang Xu , Zhiping Ren , Ruirong Dang 
Published: May 2020

Abstract
Drilling relief well is one of the most effective way to control blowout well at present. In order to improve the connection rate, the relief well needs to trace a short distance and then gradually approaches the accident well, where the relative space attitude determination of relief well and blowout well is the key to improve the drilling efficiency. In this paper, a symmetry multi-coil array-based borehole transient electromagnetic (TEM) system for relative attitude determination of relief well drilling is presented. On the basis of the borehole TEM theory, the multi-coil array weighting is applied to improve the detection performance in the case that the blowout well is parallel to the relief well. Moreover, in order to determine the relative attitude, a symmetrical borehole TEM array structure is proposed for the short-range detection. Experiments were conducted and the results demonstrate the effectiveness of the proposed method for improving the short-range detection performance, which would offer significant information for the tracing phase of relief well drilling.
Radiation Characteristics Test of FOG Circuit Magnetic Field
Authors: Lu Jun , Guo Zhirui , Liu Lei 
Published: May 2020

Abstract
Aiming at the magnetic field issue in the engineering application of fiber optic gyroscope (FOG), this paper explores the distribution law of magnetic field generated by the internal circuit of gyroscope and builds an electromagnetic field distribution scanning system to complete the test. The experimental results show that the overall radiation of FOG circuit magnetic field is low, and the front circuit radiation intensity is higher than that of bottom circuit. The front radiation is strongest at 8.76MHz, approximately 0.01mGs. It is of referential significance for the study of FOG magnetic sensitivity.
Exploration of Teaching Reform of Computer Network Practice Course
Authors: Wang Jiong , Zhang Hua , Ruan Zhiqiang , Wu Zhengyuan , Xu Ge 
Published: May 2020

Abstract
With the vigorous development of digital and network technology in China, computer and it’s technology have been widely used in various industries. Therefore, information technology has become increasingly important in today’s society. However, there are still many shortcomings in computer teaching in China, and reforms and improvements are urgently needed to give full play to the important role of computer technology. The research focuses on the following reforms of computer network practice course teaching reform.
Research on Network APT Attack Intrusion Detection Technology Based on Machine Learning Algorithm
Authors: Meng Qingchuan , Yang Yang , Wu Fengzhi , Chen Xiang , Chen Xiaoming 
Published: May 2020

Abstract
The attack frequency of network advanced persistent threat (APT) is more and more higher, which seriously endangers the network security. In order to obtain high accuracy of network APT attack intrusion detection results, aiming at the limitations of current network APT attack intrusion detection model, a network APT attack intrusion detection model based on machine learning algorithm is proposed. A “one-to-one” network APT attack intrusion detection classifier is built through a neutral and excellent support vector mechanism of machine learning algorithm, and the current standard network APT attack intrusion detection database is adopted to verify the validity of the model. The accuracy of network APT attack intrusion detection is over 95%, and the detection error is far lower than the actual application range. It can be used in the actual network security management.
Digital Signal Processing Optimization Algorithm for Terahertz Communication Based on Short Convolution Iterative Algorithm and Adaptive Blind Equalization Algorithm
Authors: Deng Dingsheng 
Published: May 2020

Abstract
This paper systematically studies the crosstalk problem caused by the low parallelization rate and tail-to-back tailing in the high-speed digital signal parallel processing in terahertz communication. First, in order to improve the parallelization rate in system application, a high-speed digital signal in the network is filtered in parallel based on a short convolution iterative algorithm for the input signal. Second, an adaptive blind equalization algorithm is proposed to solve the problem crosstalk is used to restore the original signal. Finally, the effectiveness of the equalization algorithm is verified by MATLAB, and the designed algorithm is implemented by Labview simulation software. The effectiveness of the designed algorithm is verified by simulation analysis. The high-speed signal after parallel filtering and equalization can restore the information of the original signal well.
ENSO prediction based on Long Short-Term Memory (LSTM)
Authors: Xiaoqun Cao , Yanan Guo , Bainian Liu , Kecheng Peng , Guangjie Wang , Mei Gao 
Published: May 2020

Abstract
El Niño-Southern Oscillation (ENSO), as a global climate event with cyclical characteristics, often causes global climate anomalies and produces non-negligible economic and social impacts. Therefore, the prediction and research of ENSO events are important for understanding and solving global climate change issues. It has important scientific and practical significance. Previous research on ENSO events mainly used traditional statistical analysis and numerical simulation methods. This study explores the use of deep learning to improve the accuracy of El Niño-Southern Oscillation (ENSO) prediction. Based on long-term and short-term memory neural networks, the time series of meteorological and marine elements were analyzed. In the meantime, the sea surface temperatures (SST) and sea level pressure were predicted to calculate the Southern Oscillation Index (SOI) to reflect the ENSO phenomenon. Finally, this article takes the Niño3.4 regional data from the National Centers for Environmental Prediction (NCEP) dataset as an example, and uses the model proposed in this paper to compare with traditional statistical regression methods. The results show that the Long Short-Term Memory (LSTM) has a good effect in the prediction of ENSO events, and has certain scientific significance and practical value for the prediction of ENSO events.
Research and Design of Hybrid Scheduling Algorithm Based on LIN Bus
Authors: Liang Zhanwei , Shi Hongyu , Yan Hao , Ma Dongmei , Li Jie 
Published: May 2020

Abstract
In the LIN(Local Interconnect Network) bus communication transmission, there is a problem of data transmission delay in the process of sending messages by the master-slave node ECU(Electronic Control Unit).Aiming at this kind of delay problem, this paper analyzes the characteristics of static scheduling and dynamic scheduling algorithm of LIN bus, optimizes the scheduling strategy of LIN bus message, and proposes a hybrid scheduling algorithm based on time slice scheduling. At the same time, the simulation model of LIN bus master-slave node message transmission is established, and the simulation experiment verification platform of LIN bus hardware-in-the-loop is built. It is verified that the algorithm reduces the delay by about 30%.
KSR: Knowledge-based Sequential News Recommendation System
Authors: Bai Jiameng , Huang Xin , Li Min , Peng Jia 
Published: May 2020

Abstract
With the popularity of the Internet, some online news reading habits have gradually replaced traditional media devices. People can see a variety of news on mobile phones or web pages. The overloaded information makes it impossible for users to quickly get the news they want to see, so the existence of a news recommendation system is necessary. However, unlike other fields, the recommendation of news is time-sensitive, and the problem of sparse data makes traditional collaborative filtering algorithms invalid. There are many entities in the news, and the knowledge graph is a collection of a large number of entities. In this paper, we propose a KSR model (Knowledge-based Sequential Recommendation) which uses the knowledge graph as side information to enrich the feature representation of the news to calculate the user’s probability to click the forecasted news. KSR uses the knowledge graph to represent the entities in the news and uses a recurrent neural network to capture the sequential relationships in the news data to enrich the feature representation of the news. Because the different news that user has clicked have different relations with the news to be predicted, the attention model is introduced to calculate the weights. Finally, we conduct experiments on the existing dataset and results prove the efficacy of KSR over several baselines. Different contrast experiments also prove the effectiveness of each module of the model.
The Cognitive Communication based Anti-jamming Method for UAV Swarm Communication
Authors: Wu Jian , Liu Rang , Zhao Sen 
Published: May 2020

Abstract
The communication environment of intelligent UAV swarm is complex and easy to be interfered by various electromagnetic signals. An anti-jamming method of UAV swarm communication based on cognitive communication is proposed to realize the communication networking function of UAV swarm in certain interference environment. The main approaches include spectrum sensing in electromagnetic environment, anti-jamming based intelligent decision making, and series typical anti-jamming techniques such as adaptive interference and signal separation, dynamic spectrum access, high reliability waveform enabled.