bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of roundness error of hohlraum on assembly stress for TMP component of target
Authors: Zhu Dongsheng , Zhang Zhijing , Shao Chao , Zhang Weiming , Liu Jue , Wu Feifei 
Published: September 2019

Abstract
In order to solve the problem of uneven distribution of assembly stress in thermal-mechanical package (TMP) component, the influence of the roundness error of hohlraum on the assembly stress of TMP component is studied. Firstly, five sets of hohlraum contour models with different random roundness errors are described by Hermite interpolation method, a three-dimensional model of hohlraum with random roundness error is established by inverse modeling method. Then, the contact nonlinear solution is solved for the hohlraum and the aluminum shell of the five groups of TMP component by finite element method. Finally, the five sets of simulation data is obtained and the polynomial fitting is performed, the relationship between the roundness error of the hohlraum and the maximum stress-strain of the TMP component is obtained. The conclusions provide a theoretical basis for the strength check of the hohlraum contact design, and provide theoretical guidance and technical support for a reasonable hohlraum assembly process.
Design and implementation of a boxing robot based on fuzzy control
Authors: Li Yongbin , Wang Peng , Fang Yuan , Wang Ding 
Published: September 2019

Abstract
This paper developed a new, based on AirKiss and mobile phone WeChat remote control Home Entertainment Boxing Robot. In the boxing robot software design, the core control part puts forward the Fuzzy Control Speed Control Algorithm for DC Motor. In boxing design, a simplified programming method of inverse kinematics is presented. The remote control scheme uses WeChat mobile remote control based on AirKiss.Finally, we debug the robot, the results show that boxing robots can meet the home entertainment boxing match, can meet the design requirements and verify the feasibility of the design.
DeFe: indoor localization based on channel state information feature using deep learning
Authors: Li Xiandi , Shi Jingshi , Zhao Jianli 
Published: September 2019

Abstract
With the development of mobile devices, more and more location-based services (LBS) on the devices are needed and fingerprint indoor localization has become one most important technique because of its low cost and high accuracy. In this paper, we use the fingerprinting method which based on Channel State Information (CSI) for indoor localization. Furthermore, we extract the raw phase information from the multiple antennas and multiple sub-carriers through the IEEE 802.11n network interface card (NIC 5300) on several special models. Then we extract the required phase information and introduce two methods of mathematical statistics to analyse the feature of CSI signals. We replace the processed phase information with the signal features obtained from the analysis. For the offline stage, we employ a deep network with three hidden layers to train the signal features data, and use weights to represent fingerprints. Introducing a greedy learning algorithm to train the weights layer-by-layer to reduce the computational complexity, and the sub-network between two continuous layers forms a restricted Boltzmann machine (RBM). For the online location estimation, we use a probabilistic method based on the radial basis function (RBF). The neural network method we used this time is tested under two different scenarios, and different data are compared. The final conclusion is that the new method we combined is superior to the previous.
Evaluation of insulation condition detection methods applied to DC XLPE cable
Authors: Zhang Jing , Cheng Lin , Yang Xu , Liu Zhengyang 
Published: September 2019

Abstract
At present, with the construction and operation of new energy grid-connected and offshore wind power projects in China, DC XLPE cables have been widely used. Under the operating conditions, there are mainly two feasible technical means of DC cable insulation state detection, partial discharge (PD) and leakage current. However, it is still a blank in the world to apply it to the validity and condition of DC cable operation detection. Based on the semi-conductive layer residual defect model of XLPE cable, the characteristics of PD and leakage current under different voltage values and polarities are studied by setting up an experimental platform for detecting PD and leakage current of DC XLPE cable. The results show that both PD and leakage current can detect cable defects, among which PD is easier to detect cable defects under negative polar voltage and higher voltage. Leakage current characteristics change obviously under positive polar voltage. When applied voltage is lower than rated voltage, obvious changes can also be measured. In this paper, the feasibility of live detection of leakage current of DC cables under operating conditions is proposed, which is of great value to improve the detection capability of DC XLPE cables.
Research on AC FSM used in internal corrosion monitoring for oil & gas pipeline
Authors: Duan Rujiao , Meng Xiangji , Qi Yonggang , Yang Ru , Chen Jinzhong , Wang Haitao 
Published: September 2019

Abstract
This paper explored the possibility of using the AC FSM for internal corrosion inspection of pipeline without destruction. Principle analysis and numerical simulations were used to gain an insight into the AC current distribution in the material and to improve the probes configuration that installed on the outside surface of pipeline. The experimental setup for monitoring based on AC FSM was carried out, the main advantage of which is the currents injected are much smaller over existing commercial systems, the corresponding system security improved. At last, the applications showed that AC FSM system can successfully inspect the defects in the pipelines.
Development of pressure acquisition system for cryogenic receiver
Authors: Wang Kai , Yan Hao , Chen Maozheng , Li Xiaofei , Ma Jun , Wang Yang , Xiang Bin-bin 
Published: September 2019

Abstract
Receiver system is an indispensable signal receiving equipment for radio astronomical observation. By refrigeration, the noise temperature of the receiver is reduced to a great level, and the sensitivity of the receiver is improved. Therefore, the refrigeration link is particularly important. The cryogenic receiver system of radio astronomy usually adopts compressor compressed helium cycle refrigeration mode. When the compressor is in normal operation, the injected helium high pressure is between 280-300 Psi and the low pressure is between 70-100 Psi. The two pressure values will directly affect the refrigeration efficiency of the receiver. Because the compressor and cryogenic receiver system are both on the radio telescope, engineers are unable to check the pressure state at any time during the observation process. Sometimes, because of temporary power failure or pressure reduction, the receiver warms up and so on, which affects the whole receiving system. Combining with the refrigeration system of Nanshan 26-meter antenna, we have established 6 channels of helium pressure acquisition and remote monitoring, which can better ensure the operation of cryogenic receivers.
Fast and accurate open-circuit fault diagnosis method for PWM voltage source inverters in the three-phase PMSM control systems
Authors: Sun Jun , Zhu Min , Zhou Xinxiu , Xu Yufei , Xu Yi 
Published: September 2019

Abstract
Traditional fault diagnosis methods for converter open-circuit faults may present poor anti-interference performance, low detection speed and high misdiagnose rate especially during the motor acceleration. In order to solve the above problem, a new converter single open-circuit faults diagnosis method is proposed in this paper. Firstly, though conducting differential operation for the current variables, the common mode interference can be removed. Based on the differential information, differential currents states observer is designed, which improves the anti-jamming performance of the diagnosis method. Secondly, to avoid misdetection, a variable fault detection threshold is designed. This kind of faults diagnosis method does not need additional sensors or hardware change, and does not require the motor phase currents to be sinusoidal. Besides, the detection index rises rapidly once the fault occurs. Therefore, the application range, detection accuracy, and fault detection speed can be improved simultaneously. Finally, experimental results are presented to demonstrate the correctness of the analysis and the validity of the proposed methods.
Detection of battery capacity degradation based on morphological structure
Authors: Li Lifu , Shi Sheng , Xie Zongxuan , Zhang Xiaofang 
Published: September 2019

Abstract
Owing to the fact that the existing battery capacity degradation detection method ignores the changes of battery internal morphological structure as the cycle number increases, it is hard to predict the rapid capacity degradation of the battery during the cycle process, which leads to errors of the battery capacity degradation detection result. This paper analyzes the changes in the morphological structure of the battery under different cycle numbers by means of tomographic images. At the same time, through the method of numerical analysis, the impact that the battery internal morphological structure change exerts on the battery capacity degradation is quantitatively analyzed, which provides a new way for detecting the capacity degradation of lithium ion battery.
Unified model of Sepic converter in continuous and discontinuous conduction modes
Authors: Shang Yongxiang , Tang Zian 
Published: September 2019

Abstract
Aiming at the problems of the modelling methods for Sepic converter, they were described as in inexact, large amount of calculation and complicated expressions. A suitable hybrid switching model for both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) is proposed. Firstly, according to the working process of the Sepic converter, the switching conditions of Sepic converter between different working conditions are formulated. Secondly, by introducing the logic proposition and the equivalent translation principle, the switching conditions of the converter in different modes can be transformed into mixed logical inequalities, moreover then, a unified model of Sepic converter in CCM and DCM modes is obtained. Finally, the simulation experiment of Sepic converter operating in CCM, BCM (boundary conduction mode) and DCM modes were conducted, and compared with the state space averaging method, the validity of effectiveness of the proposed approach was shown.
Vehicle identification number – anatomy of error occurrence
Authors: Rak Roman 
Published: September 2019

Abstract
Each vehicle manufactured after 1986 must be identified with a unique VIN (Vehicle Identification Number) by the manufacturer. This is so called individual vehicle identification, which is normally used as a primary data information key in various computer registers and vehicle information systems – in national vehicle registers, in police information systems (both national and international databases of stolen vehicles, etc.), in insurance company databases, leasing companies, in the eCALL technology etc. A VIN identifier error means that the vehicle cannot be found and it looks like everything is OK. The error rate of national and international registers is in the range of 5 % to 20 %. Most VIN errors occur in manual processes during transcribing or copying VINs from documents to information systems. This paper deals with the anatomy of VIN error occurrence in various processes and offers possibilities to eliminate them and improve the quality of the information systems that use VIN identifiers.
Optimizing resistance welding parameters on adhesion strength of C45 steel shaft by using Taguchi method
Authors: Nguyen Minh Tan , Nguyen Van Nhat , Hoang Van Chau , Huang Shyh-Chour 
Published: September 2019

Abstract
Adherence strength of metal coating plays an important role in workability of recovery shaft. This paper presents a Taguchi method combined Analysis of Variance (ANOVA) to optimize technological parameters for the adherence strength when restoring C45 steel shaft with a diameter of 100 mm by resistance welding using AISI 1070 filler wire. A set of welding parameters such as welding current (Ih), force (F), welding speed (Vh), is established to obtain the highest adherence strength. The optimal results have shown that the adhesion strength reaches the maximum value when the welding current, force, and welding speed are Ih2 = 7.5 (kA), F1 = 1.7 (kN), and Vh1 = 1.5 (cm / s), respectively. This value is about 90% of parent metal strength; while the metal coating is still maintains hardness as its C45 steel with hardening (50-55HRC).
Springback simulation analysis of angle shape forming of springs based on orthogonal experiment method
Authors: Li Wei , Wang Decheng , Cheng Peng , Liu Xiaoxiao , Zhang Pengfei 
Published: September 2019

Abstract
The springback phenomenon in the angle shape forming process of spring affects the efficiency and accuracy of spring machine adjustment. In this paper, the angle shape forming process and springback process of SWOSC-V material are simulated by finite element analysis software ABAQUS, and orthogonal experiments are designed. According to the simulation results, the importance order and changing trend of each parameter are determined, and the parameters of minimum springback angle and springback law are obtained. It provides a reference for practical application. It is proved that the combination of finite element method and orthogonal experiment can improve the efficiency of finding the springback law.
Water shortage risks from perennial crop expansion in California’s Central Valley
Authors: Mall Natalie K , Herman Jonathan D 
Published: September 2019

Abstract
California’s Central Valley is one of the world’s most productive agricultural regions. Its high-value fruit, vegetable, and nut crops rely on surface water imports from a vast network of reservoirs and canals as well as groundwater, which has been substantially overdrafted to support irrigation. The region has undergone a shift to perennial (tree and vine) crops in recent decades, which has increased water demand amid a series of severe droughts and emerging regulations on groundwater pumping. This study quantifies the expansion of perennial crops in the Tulare Lake Basin, the southern region of the Central Valley with limited natural water availability. A gridded crop type dataset is compiled on a 1 mi2 spatial resolution from a historical database of pesticide permits over the period 1974–2016 and validated against aggregated county-level data. This spatial dataset is then analyzed by irrigation district, the primary spatial scale at which surface water supplies are determined, to identify trends in planting decisions and agricultural water demand over time. Perennial crop acreage has nearly tripled over this period, and currently accounts for roughly 60% of planted area and 80% of annual revenue. These trends show little relationship with water availability and have been driven primarily by market demand. From this data, we focus on the increasing minimum irrigation needs each year to sustain perennial crops. Results indicate that under a range of plausible future regulations on groundwater pumping ranging from 10% to 50%, water supplies may fail to consistently meet demands, increasing losses by up to 30% of annual revenues. More broadly, the datasets developed in this work will support the development of dynamic models of the integrated water-agriculture system under uncertain climate and regulatory changes to understand the combined impacts of water supply shortages and intensifying irrigation demand.
Smart and sustainable urban development in Egypt: the case of Nabta Smart Town
Authors: Antuña-Rozado C , Reda F , El Mahgary Y 
Published: September 2019

Abstract
Nabta Smart Town (NST), in New Borg el Arab, close to Alexandria, is an ambitious project under planning that includes residential and commercial facilities, in combination with high quality “Educational Magnets” capable of creating a dynamic community and generating all sorts of interesting activities. Therefore, the uniqueness of NST is building a fully integrated and inclusive neighbourhood - Educational Magnet, Residential, Commercial (shopping, leisure and entertainment), with Administrative Offices (including high-end security). The initial conceptualization of NST by the local promoters envisions a culture that protects, maintains and recycles within the community. The collaboration of VTT Technical Research Centre of Finland Ltd. (VTT) was sought to ensure that the Master Plan (MP) and the buildings of the University, as well as the Residential and Commercial facilities of NST comply with the standards of a modern EcoCity adapted to the Egyptian context. The first phase of the work focuses mainly on carrying an EcoCity Energy Efficiency Feasibility Assessment. Specific methodologies and tools developed by VTT have been used to ensure adaptation of the solutions proposed to the local conditions. This paper discusses the results obtained using the methodology developed by VTT, its applicability at different scales, as well as its replicability potential - not only in other locations in Egypt, but also worldwide.
Processing of use cases for the development of an open platform to support the smart urban development
Authors: Schweigkofler Alice , Follini Camilla , Steiner Dieter , Romagnoli Katrien , Riedl Michael , Matt Dominik T 
Published: September 2019

Abstract
The topic of smart cities is assuming an increasing relevance, both locally and nationally. The key challenge for smart cities and communities is to significantly increase the overall quality of life in urban areas, for the benefit of their inhabitants and economic activities. This process occurs both through the improvement of traditional utility-grids and services, and through the implementation of digital sensor- and communication technologies in the urban ecosystem. In this scenario, the adoption of enabling tools to support the smart urban development, appears crucial to manage processes and data information flows, as well as to permit better communication and collaboration among the involved stakeholders.
This paper describes the development methodology of an open digital platform for smart cities. This platform will be an enabling tool for the smart urban development of a city i.e. will be able to support and encourage the growth of new services for - and with - citizens, companies, tourists, and public administrations. The concept derives from the ongoing research project OPENIoT4SmartCities, funded by the Operational Programme European Regional Development Fund ERDF 2014-2020 (CUP: B11B17000720008) Südtirol/Alto Adige. The main objective is to realise a product-prototype software, for the management of smart services in cities, using IoT.
The platform has been designed based on the specific service needs of Merano, a city in South Tyrol, Italy. The activities regard the identification of concrete use cases in the field of public illumination and water management. In particular, this paper will present the results of previous analysis, consultation meetings and workshops that have been conducted by the research team together with the public administration and local service providers of the city of Merano.
Developing a transition agenda towards a circular economy: the Dutch case of the province of Overijssel
Authors: de Bruijn T J N M , Entrop A G 
Published: September 2019

Abstract
Over the last years, it has become clear that societies need to increase the adoption rate of circular economy principles. Even though the number of circular products, services and building projects is increasing, innovators obviously experience obstacles in their quest towards a more circular economy. Moreover, relatively many governmental organisations still seem to struggle how to effectively stimulate a circular economy. Governments face the challenge to develop a playground in which a linear economy gradually is replaced by circular practices. This paper presents the case of the Dutch province of Overijssel. The key question Overijssel put forward is what the province can do to stimulate innovative practices specifically in the building sector. After a literature study, a research collective brought together highly successful and less successful local and regional examples of circularity. Document study, website analyses and interviews, provided insights on the drivers and barriers. Our analysis shows what actions the province needs to take to further stimulate or at least to maintain the drivers and what to do about the barriers. Our findings are relevant not only to the province of Overijssel, but also to other regions in Europe.
The role and value of local welfare institutions in multicultural areas
Authors: Moseng Kari , Vestergaard Inge , Jensen Birgitte Geert 
Published: September 2019

Abstract
This abstract addresses the role and value of welfare institutions as social structural elements of daily life, framing the informal -but important-meeting between residents in an urban fabric.
The discussion is contextualized through the demolition of the primary school Nordgårdsskolen, a local school serving the area of Gellerup, a social housing area back then framing the life of app. 7.000 people counting more than 80 nationalities in the western part of Aarhus, Denmark. Demographics vary from the rest of the city of Aarhus as 35 %. of tenants are under 18 years of age, meaning that a very high percentage of the local population has direct or indirect relations to schoolchildren and their institution (being parents, siblings, grandparents or other relatives).
Due to integration problems and political pressure, a close-down of two kindergartens and Nordgårdsskolen was decided on in 2007 and the demolition of the school itself took place in 2013 – 42 years after its initiation. This caused distribution of children to a large number of schools not only to the surrounding school districts but also to districts in other parts of the municipality.
In a Danish context the area of Gellerup was considered a highly modern “new town” at its initiation in 1968 – the architect Knud Blach Petersen unfolding international inspirations in terms of local welfare-, cultural- and sports facilities supporting the housing structure and the quality of life of the tenants.
New Towns have always been places characterized by migration: by definition, they have no ‘original’ inhabitants – every resident is a migrant. This situation makes it even more important to gather residents to promote integration.
The aim of the paper is to investigate and discuss the role and value of local welfare institutions not only as centers of service, but also as creators of cohesion, trust and identity.
In the specific case of Gellerup, the paper will unfold the social effects of demolishing Nordgårdsskolen as a physical place of informal meetings in a local multicultural community as Gellerup.