bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of a greenhouse remote measurement and control system based on internet of things technology
Authors: Xiao Yufeng , Zhang Zhixia , Wang Yonggang , Zhu Kai 
Published: September 2019

Abstract
This study designed a greenhouse remote measurement and control system based on Internet of Things technology. The system is based on WebOP Designer configuration software and Modbus communication protocol, with Adam4060 relay output module and intermediate relay as the control core. Remote monitoring of the greenhouse environment is achieved through cooperation with the greenhouse environmental data acquisition sensor, the Adam-4117 analog input module, the industrial-grade programmable human-machine interface, the internet/intranet and the Web Access web database. Local customers can view real-time data and historical curves by operating the human-machine interface, and control the operation of each actuator in the greenhouse according to the alarm status and warning line settings. The remote client can log in to the webpage database through the PC client and the mobile client conveniently and quickly. The system is beneficial to reduce labor costs and improve the informationization level and management efficiency of agricultural production. Through the access of expert systems, precise control of crop growth environment is achieved, and the economic benefits of crops are improved.
Research on remote calibration and online monitoring system of electric energy metering device
Authors: Yang Lu , Zhang Dingqu , Lin Guoying , Song Qiang , Meng Qingliang , Pan Feng , Liu Chang 
Published: September 2019

Abstract
This paper introduced research on remote calibration and online monitoring system of the gateway electric energy metering device. The function combined with composition of the station’s remote calibration-monitoring device and the master station management platform are emphasized. The system integrated the ways of multi-channel synchronous remote calibration, multi-dimensional monitoring, intelligent switching of detection and calibration loop, self-test of detection unit and so on into the complete set, cooperated with the master station management platform, to realize remote calibration, online monitoring, fault diagnosis and state evaluation of the gateway electric energy metering device. The system innovatively adopts a multi-channel synchronous remote calibration method to realize intelligent switching of detection and calibration loops. Through multi-dimensional data detection and state evaluation algorithms, it is possible to more comprehensively detect device status and achieve fault diagnosis. In addition, the system has high stability, accuracy and flexibility. The research plays an important role in reducing the operation-maintenance costs of the gateway electric energy metering device, guaranteeing the safety of operators and improving the level of operation and management, which ensures the accuracy of gateway energy metering and the fairness of both parties in power trade.
Research on simulation technology of power system operation and dispatch control based on trend tracking
Authors: Zhao Min , Ding Ping , An Ning , Zhang Yong , Zhang Lei 
Published: September 2019

Abstract
Over the past decade, Chinese energy structure and power system technology have undergone tremendous changes. First, the proportion of new energy in power generation capacity is increasing, and the permeability of some areas has reached 30% - 50% of the total power generation capacity; second, the characteristic of power electronics in power system is becoming more and more obvious. The impact of these two aspects on the power system is that the power fluctuation of the power grid is intensified, and the power flow is flexible and changeable, which brings new challenges to the operation scheduling and simulation technology of the power system. Therefore, based on Power System Analysis Synthesis Program (PSASP) electromechanical transient simulation program, this paper studies and proposes a power grid regulation and control analysis method, it can help the dispatchers and operators to improve the dispatching plan and the accuracy of various kinds of anticipated faults. This method seeks to simulate the power flow fluctuation of the real power grid approximately. The validity of the proposed method is verified by the simulation calculation of some year national interconnection data.
Fast and accurate 3D reconstruction based on grating projection
Authors: Ou Ji , Yang Haima , Liu Jin , Xie Mengtao , Xu Wei 
Published: September 2019

Abstract
The principle model and calibration method of measurement are very important to the measurement system. In the vision measurement system, the auxiliary light source, such as laser, interference light, sine grating and so on, is usually needed in order to achieve high precision measurement results. In the existing 3D measurement methods for the surface topography of complex objects, in order to complete the measurement of absolute phase, it is usually necessary to process at least 6 fringe images, which limits the measurement speed. A method for obtaining the 3D shape of an object by using four sinusoidal fringes is presented. The truncated phase of the sinusoidal fringe is obtained by using the four-step phase shift. When the fringe order is obtained, the time of data processing can be reduced and the measurement speed can be further improved. The reconstruction time is less than two minutes and the maximum absolute error and maximum RMS error are 0.033mm and 0.029mm respectively when the height of the face model is 45mm. The validity and practicability of the method are verified, and it has a wide application prospect in high-speed and real-time 3D measurement of complex topography.
Fast-transient high-performance low dropout regulator with push-pull technique
Authors: Duan Zhikui , Zhao Xiaomeng , Li Qiushi , Niu Guo , Hu Jianguo , Wang Xiucai , Chen Jianwen , Wang Xingbo 
Published: September 2019

Abstract
A fast transient response low dropout (LDO) regulator based on push-pull structure is presented in this paper. The push-pull circuit sampling the output of the LDO and adjusting the gate voltage of the power MOSFET by push-pull current. The slew rate of the power MOSFET gate is accelerated and the transient response performance is improved. With a 1μF decoupling under 180 nm CMOS technology, the proposed LDO exhibits an excellent transient performance. When the workload changes steeply between 100μA and 20mA in 100ns, the overshoot is 10.176mV and undershoot is 10.795mV with the recovery time are 1.272μs and 0.888μs respectively.
Selection of optimal coordination contract for sustainable supply chain under carbon tax
Authors: Deng Kexin , Gao Benhe 
Published: September 2019

AbstractThe purpose of this paper is to find an optimal coordinating contract on a two-echelon sustainable supply chain composed of a manufacturer and a retailer under carbon tax policy. Taking consumer environmental awareness (CEA) and manufacturer’s abatement investment cost into account, this study compares wholesale price contract, revenue-sharing contract and green cost-sharing contract, and finds that none of them can obtain coordination. Then, “Adjusted” contracts are introduced and proved that only adjusted revenue-sharing contract can coordinate the supply chain. Considering the profit redistribution proposition of the two-part tariff contract, the study introduces combined contracts, which are found capable of obtaining supply chain coordination as well as a win-win outcome.
An assembly process parameters optimization method for precision assembly performance
Authors: Shao Chao , Ye Xin , Wang Lei , Zhang Zhijing , Zhu Dongsheng , Qian Jiahui 
Published: September 2019

Abstract
There are only few works in literature that suggest an assembly process optimization method based on manufacturing errors in the precision manufacturing area. A multi-objective assembly process parameters evaluation and optimization method for precision assembly performance of microstructures with manufacturing errors has been proposed in this paper. Based on the model with manufacturing errors, the ABAQUS software is used for simulation and calculation, and the assembly performance evaluation indexes of the microstructures under different assembly process parameters, such as stress value, stress distribution value and pose offset, are obtained. The mapping model of the key assembly process parameters and assembly performance is established based on BP neural network. Finally, the best assembly process parameters for the optimal assembly performance are solved based on the genetic algorithm, and the method has been verified by the optimization results of preload forces of the 3D mechanism, which can be used to guide and monitor the assembly process quantitatively in the precision manufacturing area.
Study on measuring straightness of piston rod in large oil cylinders
Authors: Chen Xinchun , Bi Mengxue , Xue Chunyang 
Published: September 2019

Abstract
The straightness detection methods of different geometric elements are described in detail in GB/T 1133 6-2004, but there are still many difficulties in how to implement the method in engineering, for example, how to detect straightness in the production process of piston rods in large oil cylinders. Based on time-domain three-point method and the various requirements of straightness measurement in the process of large piston rods’ production, a method for detecting the straightness of the large rod with large length-to-diameter ratio was proposed and the measuring device was successfully developed. In addition, the influences of the three error sources including axial rotation angle, probe spacing and sampling interval on the measurement results are discussed in detail. Considering the production cost and the accuracy of the device, the parameters of the straightness detection device are optimized. The effectiveness of the method was verified by field experiments. It’s very important that the study provides a technical basis for the straightness detection of large slender rods.
Penetration control of GTAW process for aluminum alloy using vision sensing
Authors: Peng Guodong , Gao Yanjun , Tian Zhijie , Yang Zhanli , Xue Boce , Hong Yuxiang , Du Dong 
Published: September 2019

Abstract
Unpredictable and inevitable perturbations during welding have adverse effects on the uniformity of weld penetration degree. Hence feedback control of weld penetration is necessary for assuring the welding quality. The backside weld bead width, regarded as a representation of penetration state, is measured usually by a structured-light sensor during the welding process. However, the structured-light method can only measure the width of the solidified weld behind the weld pool, but not the weld pool width, owing to the specular weld pool surface, thermal radiation and the possible arc light. It will introduce a time delay into the penetration control system. A novel low-cost visual technique of acquiring the backside weld pool width is developed in this paper, and the closed-loop control of weld penetration is achieved during gas tungsten arc welding (GTAW) for aluminum alloy. The parallel light is projected onto the weld pool backside, and the outline of the weld pool is highlighted because of the different reflection from the plate’s flat surface and the weld pool’s convex surface. Changes in the plate geometry are introduced during the experiments to perturb the welding process. Results show that stable penetration is maintained despite the perturbation.
The research of effect of various parameters on processing performance of compound machining of EDM milling and arc machining
Authors: Niu Zhenwei , Liu Yonghong , Wu Xinlei , Zhang Xuexin , Ding Zhiwei 
Published: September 2019

Abstract
As a new processing method for hard-to-cut materials, compound machining of EDM milling and arc machining has the extremely high processing efficiency. The study of machining parameters is indispensable to the research of the process performance. In this paper, a large number of single factor experiments under different processing parameters were carried out by using compound EDM arc milling machining technology. The effects of different peak current, arc pulse duration, arc pulse interval, spindle speed and the external diameter of the electrode on processing efficiency, the surface roughness(SR) and relative electrode wear rate(REWR) were obtained. More importantly, different optimal parameters to get the highest processing efficiency, minimal SR and REWR were also acquired to provide support for future research.
A hybrid artificial bee colony algorithm for balancing two-sided assembly line with assignment constraints
Authors: Xiong Jing , Duan Xiaokun , Wang Erhua 
Published: September 2019

Abstract
Two-sided assembly line balancing problem (TALBP) is a vital design problem for the industries. In real production process, some complex constraints should be considered in the two-sided assembly line. To solve the practical TALBP, this paper proposes a hybrid algorithm (HABC) that combines the artificial bee colony (ABC) algorithm and late acceptance hill-climbing (LAHC) algorithm. In the proposed algorithm, a well-designed decoding scheme is embedded to tackle multiple assignment constraints. Moreover, two neighborhood search strategies are implemented by employed bee and onlooker bee to explore and exploit the new solution. A set of computational experiments is performed on benchmark problems. The comparison results, best solutions, standard deviation and relative percentage index demonstrate that the HABC algorithm outperforms other algorithms published in the literature and finds 5 brand new solutions for 15 instances.
Application of high-speed cutting technology in automobile manufacturing
Authors: Hao Botao , Lin Guomin 
Published: September 2019

Abstract
High-speed cutting technology is widely used in stamping die, die-casting die and injection die for its high processing efficiency. Based on the characteristics and advantages of high-speed machining technology, this paper analyzes the application of high-speed machining technology in the manufacture of automobile parts, overlay parts, cylinder bodies and automobile wheels, taking the change of cutting speed and cutting temperature as the research object.
Nature Based Solutions (NBS) for sustainable and resilient cities: experiences from Europe and Brazil
Authors: Antuña-Rozado C. , Herzog C. P , Freitas T. , Cagnin C. , Wiedman G. 
Published: September 2019

Abstract
Although Nature-Based Solutions (NBS) is a relatively recent concept, it can provide effective means for cities worldwide to become more sustainable and to enhance urban resilience, thus improving the quality of life of their citizens. Moreover, cost-effective NBS can help improve the urban environment in multiple scales, from buildings to neighbourhoods, from public spaces to peri-urban areas, providing all kinds of co-benefits positively influencing the above-mentioned challenges. Depending on the context and the need, many different stakeholders may be involved in the co-creation of systemic, inclusive and locally attuned NBS supporting social cohesion and urban equality.
The learning alliance fostered by the EU-Brazil Sector Dialogue on NBS, is currently working together to identify common research and innovation agendas for cooperation, as well as mapping relevant examples of successful NBS that have been recently implemented or are under development in both Europe and Brazil. The cases selected have been studied and compared with a particular emphasis on their potential for replicability, scalability and adaptation to the local context. In addition, they should address the three pillars of sustainability: environmental, socio-cultural and economic.
Therefore, this paper discusses the opportunities offered by NBS (even in periods of economic downturn), but also the limiting factors hindering their wider dissemination. In addition, it will present through a few inspiring case studies from both regions, clear examples of successful implementation of NBS, which could be replicated and scaled in other locations in response to specific local conditions.
Mineral wool waste-based geopolymers
Authors: Yliniemi Juho , Luukkonen Tero , Kaiser Anne , Illikainen Mirja 
Published: September 2019

Abstract
Mineral wools –a general term for stone wool and glass wool– are the most common building insulation materials in the world. The annual amount of mineral wool waste generated in Europe totaled 2.3 Mt in 2010 – including wastes from the mineral wool production and from the construction and demolition industry. Unfortunately, mineral wools are often considered unrecyclable due to their fibrous nature and low density. Thus, the utilisation of post-consumer mineral wool waste in different applications remains low.
Mineral wools have a great potential as geopolymer precursors as they have suitable chemical and mineralogical compositions. As geopolymers can provide significant CO2 emission reductions compared to traditional Portland cement concretes, using mineral wool waste as geopolymer precursor would be an attractive utilisation path. Here, we show that mineral wool waste can be geopolymerised to form sustainable cements with good mechanical properties. Geopolymerisation of mineral wool waste therefore offers an attractive route for waste valorisation and production of low-CO2 cements.
Multidimensional evaluation of tenants’ temporal relocation during a renovation: A comparison between two case studies from Sweden.
Authors: Serrano-Jiménez A , Femenías P , Thuvander L 
Published: September 2019

Abstract
This research focuses on the tenants’ temporal relocation or stay in the home during renovation works and the property owners’ possibility to refurbish with intense and global interventions. The study compares two renovation strategies applied in two residential neighbourhoods in Gothenburg, Sweden, built between the 1950s and 1960s. In one neighbourhood, the tenants stayed in their homes during the renovation works, and in the other neighbourhood, the tenants were relocated to other buildings for over six months. Retrofitting interventions, investment costs, rent increase, time periods and the constructive processes are considered for each renovation strategy, as well as the impressions of the tenants and property owner entities in each neighbourhood were collected. The results compare, through a report on the affordability and effectiveness, the pros and cons of a relocation or non-relocation strategy. This research offers a real and experimental comparison that reach to political, architectural, social and economic conclusions to facilitate the decision-making regarding the tenants’ temporal relocation. Finally, it is also highlighted the need to involve the tenants in the design of effective renovation proposals.
Sustainable Transportation in Metropolitan Cities; Berlin, Helsinki, New Delhi and Pune
Authors: Rajesh S , Shashank P , Abhirup D , Tolu A , Zorro D , Zakarya A , Albo M 
Published: September 2019

Abstract
If one comprehends a city as a human body, then transportation would be its arteries and veins. It makes mobilization possible. In the age of rapid globalization transportation does not only concern itself with a single city but transportation deals with a global scale today. This paper focuses on a comparative analysis of transportation methods for four cities in terms of how new sustainable transportation concepts can be applied to make our future better. The discussion includes a vast range of possibilities of our future sustainable cities in transportation. Environmental and technological aspects as well as politics and policies are inspected. Cities flourish, develop and revolve around transportation. Our future sustainable cities would be no different. We need to approach transportation from all the three aspects of sustainability e.g. social, ecological, and environmental. We have chosen our cities for case studies on a broad range from low-density in Helsinki to very high population in Delhi. The rapid growth in transportation has remarkably increased the carbon footprints of our cities. While planning for our future cities making transportation sustainable is of paramount importance. To understand the issue of transportation for our sustainable cities we discuss the present state of transportation globally and analyse transportation in major cities such as Berlin, Delhi, Helsinki and Pune.
A sustainable built environment for healthcare: generative mechanisms for future-proofing
Authors: Krystallis I , Rickaby B , Murtagh N 
Published: September 2019

Abstract
Construction projects are planned from a set of deterministic objectives and constraints that dictates what designers must accomplish. In the case of healthcare facilities, where the policy environment is characterized by change on several fronts, fixed requirements could constrain their evolvability and sustainability. Future-proofing is a response to uncertainty whereby a physical structure is designed to respond to future changes in requirements, change of use, strategic perspectives, business drivers, new policies and changing climate. The paper investigates the causal powers that explain how and why future-proofing decisions achieve a sustainable outcome. A critical realist lens is adopted to develop a configurational perspective of future-proofing design evolution. Critical Realism’s open systems ontology of social reality can account for the fact that outcomes are not predictable and can better explain the nature of causation in complex social interactions such as construction projects. A case study research design was conducted comprising in-depth interviews with healthcare construction professionals in a UK setting. The study contributes to the sustainability literature by offering four generative mechanisms of future-proofing decision making and how they contingently lead – or fail to lead - to future-proof outcomes. Two change mechanisms and two problem mechanisms are presented, together with their configuration under the right conditions and context to lead to design decisions for construction projects capable of adapting to a range of possible futures.
Evaluation of hybrid heating systems with a combination of fossil and renewable energy sources
Authors: Borodinecs Anatolijs , Bogdanovics Raimonds , Prozuments Aleksejs , Tihana Jelena , Gaujena Baiba 
Published: September 2019

Abstract
Natural gas heating systems are traditionally very popular in private sector in Latvia because of their numerous advantages, such as high efficiency, relatively low CO2 emissions, automation possibilities and convenient fuel supply, as well as widely available natural gas distribution network. Household natural gas consumption has remained fairly stable over the last decade and accounted for 11.3% of total natural gas consumption in 2017, however, natural gas consumption may decline in the near future, because of installation of renewable energy powered systems which improve systems’ resilience and reduce expenses on heating and hot water preparation. Curently hybrid gas boilers in combination with solar thermal panels are promoted on the market as the most efficient and environmentally friendly solutions. The main aim of this study is to perform a detailed simulation on hybrid gas systems energy production in Latvian climate and to evaluate potential energy savings. The performed simulation results show that solar thermal panels do not actually reduce the consumption of natural gas in November, December and January, whereas in the summer months solar thermal panels almost entirely provide the needed energy to prepare hot water. Nevertheless, the annual savings for a single family house are minor and the payback time for the installation of hybrid gas/solar systems could exceed 20 years.