bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization on effects of design parameter on displacement amplification ratio of 2 DOF working platform employing Bridge-type compliant mechanism flexure hinge using Taguchi method
Authors: Wang Chia Nan , Truong Kim Phung , Huynh Ngoc Thai , Nguyen Ho 
Published: September 2019

Abstract
High precision positioning systems was usually utilized in industrial applications. But the systems have workspace limits. Therefore, a new design for 2-DOF working platform employing two bride-type compliant mechanism flexure hinge was suggested in this paper. The INVENTOR 2018 software was used to design the mechanism and the output displacement, output stress were obtained by Finite element method in ANSYS. The simulation results were achieved maximum value for output displacement of 0.61 mm according x axis direction and y direction, and maximum value for output stress of 120 MPa while input displacement of 0.01 mm, input body length of 5 mm, fillet of radius of 0.2 mm, incline angle of 1.2 degree, width of flexure hinge of 2 mm, thickness of flexure hinge changes from 0.25 mm to 0.75 mm. The simulation results of two remain cases was also presented and discussed. In three cases, thickness of flexure hinge has important effected on output displacement and output stress. The maximum value of displacement amplification ratio was achieved 61.13 by simulation for two x and y axis directions. The S/N analysis demonstrated the design parameters have important effects on output displacement and stress. The optimal total displacement amplification ratio was obtained 91.35 compared with the predicted value of 98.08 that was good agree with 6.86% deviation error and the optimal value of stress was obtained 73.3562 MPa compared with the predicted value of 80.0936 MPa that was good agree with deviation error 8.41%.
Optimizing operation of integrated energy system considering distribution network and natural gas network
Authors: Xuan Juqin , Zheng Jieyun , Shi Pengjia , Wang Jueying , Xie Shiwei , Kong Shunfei , Hu Zhijian 
Published: September 2019

Abstract
In this paper, an optimizing operation model of integrated energy system (IES) based on distribution network and natural gas network is proposed. While meeting the safety operation constraints of these two networks, the cost of energy for the integrated energy system is minimized at the same time. The proposed model is a comprehensive non-convex problem which is difficult to solve. In order to solve this problem, the incremental piecewise linearization as well as second order cone relaxation (SOCR) is applied to convert the original model into a convex problem. Therefore, the operational scheme of the integrated energy system can be obtained through solving the prosed model. Finally, the effectiveness of the prosed model was verified by simulation on an integrated energy system consisting of the 20-node natural gas network and IEEE 14 node system.
Application of quantum secure communication technology in the power grid services
Authors: Xing Mengmeng , Liu Guojun , Lu Xu 
Published: September 2019

Abstract
With the development of power communication networks, the demand of information security involved in power network services also increases. Traditional secure communication technology have not been able to guarantee the security of the information transmitted in absolute security. This paper focuses on the problem of secure transmission of power communication networks, and proposes a suitable quantum secure communication technology scheme to ensure the key rate of the long-distance quantum secure communication and the security of the power communication network.
Research on harmonic transfer between HVDC transmission and AC grid
Authors: He Dongshan , Wen Jun , Geng Xiaohong , Wang Sichao 
Published: September 2019

Abstract
Due to the reverse distribution of China’s economy and resources, HVDC transmission with great advantages in long-distance and large-capacity transmission has been greatly developed. At the same time, the diversity of harmonic sources in the AC power grid is increasing, such as new energy power generation, electrified railways, and electric vehicle charging piles. These all have led to the extensive use of high-power power electronic equipment. In addition, the interaction of harmonics between AC and DC systems may cause Harmonic amplification, harmonic cross-modulation, harmonic resonance and harmonic instability. These all threaten the stability of power grid. This paper first analyzes the harmonic characteristics of HVDC transmission, establishes the harmonic model of HVDC transmission, and analyzes the harmonic characteristics of various harmonic sources in AC system. On the basis of this, the transmission characteristics of the DC side harmonics to the AC side and the transmission characteristics of the AC side harmonics to the DC side are theoretically derived and analyzed, and derive the DC voltage characteristics corresponding to the AC positive sequence, negative sequence and zero sequence voltage. Then the harmonic transfer model of the AC and DC side is obtained.
Research on fault feeder detection with adaptive notch filter in non-effective neutral point to ground system’ single phase to ground fault
Authors: Shi Bei , Wang Qiang , Zhao Lihua , Yin Lijun , Zhang Zhixia 
Published: September 2019

Abstract
It is difficult to detect single-phase grounding fault in non-effective neutral point to ground system because of its weak current and unstable arc. In this paper, a kind of self-adaptive notch filter is used to extract the fundamental wave of current signals. This method is verified by Matlab/Simulink simulation. The result confirms that the method can realize fault line detection timely and accurately.
The study of equivalent circuit model of battery based on parameters identification multi-dimensional look-up table method
Authors: Yin Hui , Shi Changkai , Bai Xuefeng , Gu Lingyun , Li Pengcheng , Du Haijiang 
Published: September 2019

Abstract
Establishing reasonable and accurate battery model is important to battery energy storage system as well as parameter estimation for battery management system, such as SOC, SOH. In this paper, aiming at the equivalent circuit model, to improve its accuracy, the impact of the age, temperature, SOC, load current, self-discharge and other factors are considered, the experimental data is obtained under different conditions of reasonable experimental settings, using multiple linear regression method to get the model structure parameter off-line. Using the results establish an equivalent circuit model based on multi-dimensional look-up table, the model structure parameters can be interpolated lookup data based on conditions to suit the battery. Finally, design simulation examples verify the correctness and non-structural parameters of the model SOC, SOH implementation strategies.
Study on the superposition of multi-harmonic sources in electrified railway traction substations
Authors: Geng Xiaohong , Wen Jun , Wang Sichao , He Dongshan , Qian Yeniu 
Published: September 2019

Abstract
The harmonic current generated by electrified railway traction substation has stochastic volatility. Aiming at the superposition of multi-harmonic sources caused by electrified railway traction substations in a certain area, this paper establishes the harmonic sources model of electrified railway traction substation, and calculates to superpose harmonic sources with random amplitude and phase angle by the national standard method and Monte Carlo method in MATLAB. Then built the power grid model of the area to verify the above methods based on ETAP simulation software. The results show that Monte Carlo method has less calculation error in calculating random harmonic sources and is more suitable for evaluating the superposition of multi-harmonic sources in electrified railway traction substations.
Development and delay analysis of data acquisition gateway for train monitoring and control system
Authors: Yang Weifeng , Guo Songlin , Chen Tao , Yao Zikai 
Published: September 2019

Abstract
To solve data processing for the train multiple monitoring and control devices, a multi-protocol data acquisition gateway based on the embedded Linux system was designed. The principle of the gateway was proposed. The gateway’s communication abilities of RS485 network and Ethernet as well as RS485 network based on HDLC protocol and Ethernet were demonstrated by delay analysis for data propagation. The implementation of data acquisition and retransmission for the LKJ and TCMS provides support for achieving the aims of remote monitoring and fault diagnosis for rail transit train.
RGB-D visual odometry with point and line features in dynamic environment
Authors: Wang Shuai , Han Baoling 
Published: September 2019

Abstract
Vision-based simultaneous localization and mapping (SLAM) technology is the key to realize autonomous navigation of mobile robots. When the robot is in an unfamiliar environment, it usually uses the point features of the surrounding environment to estimate its pose. However, if the feature information in the environment is not rich and there are many dynamic objects, the camera trajectory cannot be accurately estimated. To this end, this paper proposed an RGB-D visual odometry that combines point features and line features simultaneously. The dynamic line features are eliminated by calculating the static weight of the line features, and the camera pose is estimated based on the point features and the remaining line features. Compared with other feature-based SLAM systems, the performance and accuracy of systematic pose estimation can be improved in the absence of feature points or dynamic environments.
Simulation and analysis of single-phase grounding fault in small current grounding system
Authors: Fu Jinwei , Shi Changkai , Fan Wenbo , Guan Shilei 
Published: September 2019

Abstract
The characteristics and distribution of single-phase grounding faults in small current grounding system are not easy to capture, and it is not easy to collect and cover all possible situations in operation site. This paper builds a fault simulation model of distribution network based on PSCAD. By changing the fault location, line type, transition resistance, fault time and other factors, and combining with the analysis of fault mechanism, the factors affecting single-phase grounding faults are obtained. The impacts of fault feature distribution provide theoretical guidance for fault identification equipment function detection and so on.
Coupling of El Niño events and long-term warming leads to pervasive climate extremes in the terrestrial tropics
Authors: Rifai Sami W , Li Sihan , Malhi Yadvinder 
Published: September 2019

Abstract
The El Niño Southern Oscillation (ENSO) is a major driver of seasonal and interannual climatic variability across the tropics. The 2015/16 El Niño event was one of the strongest El Niño events of the past century. Here we characterize the meteorological impacts of the 2015/16 El Niño event upon the terrestrial tropics, and place the severity of this event into context of previous strong events in 1982/83 and 1997/98. Strong drought-inducing meteorological anomalies (≥2 s.d.) occurred across vast regions (20%) of the terrestrial tropics, where the wet tropics (≥1200 mm yr−1) were more severely affected (33%) than the drier tropics (6%). Central and eastern Amazonia experienced the most sustained and spatially extensive drought inducing anomalies, while parts of the Congo basin and Insular Southeast Asia also experienced severe drought. Surprisingly, some regions of the tropics (e.g. the Guiana Shield) with well known ENSO teleconnections were only briefly affected by the 2015/16 El Niño event. 2015/16 El Niño soil water drought impacts affected 29% of the terrestrial tropics, compared to 16% and 18% in 1982/83 and 1997/98, respectively. Maximum temperatures were particularly exacerbated compared to previous strong El Niños because they were amplified by the warming trend due to anthropogenic climate change. This also intensified positive anomalies of atmospheric vapor pressure deficit (the atmospheric demand for moisture), which had strongly negative consequences for vegetation productivity in the tropics. Even if El Niño events do not increase in intensity over coming decades, the pervasive long-term warming trend means that the atmospheric drought impact of each strong El Niño is becoming more severe, and many parts of the tropics will experience novel climate (temperature and VPD) conditions with each new strong El Niño event.
Circular Economy in the Built Environment: Supporting Emerging Concepts
Authors: Huovila P , Iyer-Raniga U , Maity S 
Published: September 2019

Abstract
This paper presents circular built environment case studies from Europe, Asia and Africa covering circular housing concepts, circular office refurbishment, circular construction and demolition waste management and circular building material production. One Planet Sustainable Buildings and Construction programme is developing a data base on pilots addressing different life cycle stages of circular buildings. Those cases can be exploited when developing sustainable solutions that meet local conditions. The intent of reporting the case studies is to support the building and construction sector to move towards a circular economy.
Promoting the energy refurbishment of social housing: the KlimaKit model
Authors: Penna P , Schweigkofler A , Brozzi R , Marcher C , Matt D T 
Published: September 2019

Abstract
Despite the well-known need of retrofitting the existing building stock and the availability of a wide range of energy efficient technologies, financial products and public incentives, the private as well as the public sector are struggling to invest in energy efficient solutions for buildings. Designers, companies, financers, and energy suppliers follow their own profit, instead of creating synergies to fulfil what should be the final goal of a retrofitting project: the client’s satisfaction. The aim of this paper is to present the methodology developed, within the KlimaKit project [1], to support both the refurbishment process of the buildings belonging to the social housing association of the Autonomous Province of Bolzano and the energy refurbishment market of South Tyrol. The results presented in this paper are part of the ongoing research project “KlimaKit”, founded by operational programme European Fund for Regional Development of the Autonomous Province of Bolzano EFRD 2014-2020 – Investments in Growth and Employment.
Advancement of highly environmentally sustainable business management concepts with contexts embedded in construction markets
Authors: Huovinen P 
Published: September 2019

Abstract
Sustainable is defined to be capable of, relating to, or designating forms of human economic activity and culture that do not lead to environmental degradation, especially avoiding the long-term depletion of natural resources. Herein, the aim is to advance the design of business management (BM) concepts with contexts embedded in construction markets along the environmental sustainability dimension. The paper is part of the on-going reviewing of research on construction-related BM. The reviewing has resulted in the identification of 79 construction-related BM concepts published between 1990 and 2017. Thereof, only 16 (20%) authors have designed their concepts along the environmental sustainability dimension. There are 3 (4%) high-sustainability BM concepts including sustainable business goals, offerings, advantages, synergies, competitiveness, processes, organizations, and/or project portfolios, followed by 1 (1%) medium-sustainability and 12 (15%) low-sustainability BM concepts. In the future, the design of high-sustainability BM concepts could be advanced by (i) creating and distributing value in sustainability for all stakeholders, (ii) re-designing strategies and leveraging knowledge about and competences in sustainability through value chains, (iii) making sustainability a priority for decision makers, (iv) empowering middle managers, experts, and employee teams, and (v) redefining businesses and public services as well as collaborating inside and across borders.
Health & wellbeing in offices - A study of literature on the Nordic perspective
Authors: Forooraghi Melina , Wallbaum Holger , Ryd Nina 
Published: September 2019

Abstract

Aim: This review aims to explore the relation between the physical office environment and employee health as found in the Nordic literature. Background: The Nordic countries have a worldwide fame for their high living and working standards. Nevertheless, they have also been facing global challenges related to demographic changes, aging population, and a rise in long term conditions which require a creative way of thinking, and innovative approaches in the ways we deliver buildings and the built environment. The built environment is a health determinant and a resource for health and wellbeing of building users. In office sector, however, there is little known regarding the design implications of the physical environment for health outcomes. A review of the literature on the current state of the art in the Nordic context could offer an opportunity to rethink office design and support dialogue on how better design can improve employee health outcomes. Methods: An explorative document analysis of recent literature on workplace environment in the Nordic context was carried out. Results: Three main gaps in the literature were identified, including (1) limited understanding of health, (2) unrecognised role of the physical work environment and design professions in relation to health, and (3) diverse research orientations. The combination of results suggests the paucity of the studies relating the physical office environment to positive health approaches. Conclusions: This review highlights the need for more quantitative and qualitative methods to give relevant knowledge for complex questions regarding the physical office environment and health outcomes of employees. Future research should enable dialogue and collaboration between different actors such as managers, human resources, occupational health professionals and designers, which can benefit the users of office building.
Thermal comfort analysis of a representative multi-story social housing unit with wood as an alternative construction material in Brazil
Authors: Valdenebro Esaiy , Dietrich Udo , Ino Akemi 
Published: September 2019

Abstract
This research intends to link thermal comfort as an important part of achieving energy efficiency in the operational phase of a building with the use of wood as a low embodied energy and carbon efficient construction material. The thermal performance of a representative multi-story social housing unit with common construction materials is evaluated in contrast to wood-based construction systems in Brazil. A project located in São Carlos, Brazil was selected. The construction system for walls consists of concrete blocks while roofs are composed of a fiber cement sheet and a concrete slab ceiling. As alternative wood-based wall systems, plywood panels with an air chamber or three different insulation materials (expanded polystyrene, cellulose and mineralized wood fiber) were tested while two alternative roof systems were analyzed (plywood lining with air chamber or insulation material). The project with common construction materials as well as the wood-based alternatives were evaluated through the Brazilian standard NBR 15575 and the European Standard ISO 13786. Furthermore, a transient simulation was conducted following the procedure established by NBR 15575 and using the adaptive comfort model ASHRAE 55-2013. The analysis evidenced the neglection of the recommended passive design strategies according to the Brazilian Standard 15220 and the psychometric chart of Givoni. In regard to the wood-based constructions, results showed that insulation of mineralized wood fiber in panels performed better than cellulose and expanded polystyrene. The transient simulation also demonstrated better thermal comfort conditions with a hybrid wood-based model compared to the construction typology of the representative project.
Multi-criteria material selection for buildings in challenging environments
Authors: Domingos L , Rato V 
Published: September 2019

Abstract
Climate change and future weather conditions are likely to challenge the way buildings are designed because there will be an increase in extreme climatic conditions. What should architects change in their design process to produce human habitats able to withstand those extreme conditions to ensure adequate comfort conditions? This paper presents preliminary results within the scope of an on-going research that addresses one single key issue: what materials will be most suitable in extreme temperature conditions. A set of 52 materials is analysed through a multi-criteria decision process that includes thermal conductivity, thermal diffusivity, thermal effusivity, linear thermal expansion, service temperature, fracture toughness, recycle potential and embodied carbon as criteria. The goals are to find the best-fit materials for each climate scenario within the scope of contradictory objectives and to develop a methodology for the selection of construction materials for buildings in challenging environments. Results show that the best possible material for extreme temperatures, whether it would be a very cold or a very hot environment, is one that could combine the properties of polymers with a very low environmental impact (at the level of the impact from materials such as natural fibres, wood or wood derivatives). The results thus suggest that further research may be directed at biomaterials development.
Assessment of sustainability of the built environment in Latin American neighbourhoods: five cases in southern Chile.
Authors: Zumelzu A , Gruehn D , Hosni J 
Published: September 2019

AbstractThis article aims to show the results of the evaluation of the sustainable potential of the built environment in five neighborhoods in Southern Chile, to deal with the complex agenda of urban transformations in intermediate cities. Five neighborhoods in Isla Teja district, in the city of Valdivia, are evaluated in this research. The methodology considers five dimensions widely discussed in scientific literature: Accessibility, Connectivity, Density, Diversity and Vitality. The results show that certain neighborhoods have greater degree of adaptability in their morphology to generate diversity of uses, which in turn promote greater sustainability of the urban form. Mixed-use development and graded densities in urban blocks show best response to promote social life and collective activity in urban space. The article concludes with respect to future challenges to promote the development of more sustainable urban conditions in Latin American cities.