bluuebunny/crossref_metadata_2025_split huggingface dataset:
2νββ-decay to first 2+ states with partial isospin symmetry restoration from spherical QRPA calculations *
Authors: Fang Dong-Liang , Faessler Amand 
Published: July 2020

Abstract
Using partially restored isospin symmetry, we calculate the nuclear matrix elements for a special decay mode of a two-neutrino double beta decay – the decay to the first 2+ excited states. Employing the realistic CD–Bonn nuclear force, we analyze the dependence of the nuclear matrix elements on the isovector and isoscalar parts of proton–neutron particle–particle interactions. The dependence on the different nuclear matrix elements is observed, and the results are explained. We also provide the phase space factors using numerical electron wavefunctions and properly chosen excitation energies. Finally, we present our results for the half-lives of this decay mode for different nuclei.
Single-particle resonant states with Green’s function method *
Authors: Chen Cheng , Li Zhipan , Li Yuxiao , Sun Tingting 
Published: July 2020

Abstract
This study employs the relativistic mean field theory with the Green's function method to study the single-particle resonant states. In contrast to our previous work [Phys. Rev. C, 90: 054321 (2014)], the resonant states are identified by searching for the poles of Green's function or the extremes of the density of states. This new approach is highly effective for all kinds of resonant states, no matter whether they are broad or narrow. The dependence on the space size for the resonant energies, widths, and the density distributions in the coordinate space has been checked and was found to be very stable. Taking 120Sn as an example, four new broad resonant states

,

,

, and

were observed, and the accuracy for the width of the very narrow resonant state

was highly improved to

MeV. Further, our results are very close to those obtained using the complex momentum representation method and the complex scaling method.
Uplifting of AdS type to quintessence-like potential induced by frozen large-scale Lorentz violation *
Authors: Zhai Hanyu , Shen Jiayin , Xue Xun 
Published: July 2020

AbstractThe quintessence-like potential of vacuum energy can meet the requirements from both quantum gravity and the accelerating expansion of the universe. The anti-de Sitter (AdS) vacuum in string theory must be lifted to the meta-stable dS vacuum with a positive vacuum energy density to explain the accelerating expansion of the universe. Based on possible large-scale Lorentz violation, we define an effective cosmological constant that depends not only on the bare cosmological constant but also on the Lorentz violation effect. We find that the evolution of the effective cosmological constant exhibits the behavior of the quintessence potential when the bare cosmological constant originates from the string landscape, in contrast to the existence of a local minimum during evolution when the bare cosmological constant is supplied by the swampland. The critical value of the bare cosmological constant is approximately zero for the behavior transition. The frozen large-scale Lorentz violation can uplift the AdS vacua to an effective quintessence-like one in this sense.
Electron and positron spectra in three-dimensional spatial-dependent propagation model *
Authors: Tian Zhen , Liu Wei , Yang Bo , Fu Xue-Dong , Xu Hai-Bo , Yao Yu-Hua , Guo Yi-Qing 
Published: July 2020

Abstract
The spatial-dependent propagation (SDP) model has been demonstrated to account for the spectral hardening of both primary and secondary Cosmic Rays (CRs) nuclei above about 200 GV. In this work, we further apply this model to the latest AMS-02 observations of electrons and positrons. To investigate the effect of different propagation models, both homogeneous diffusion and SDP are compared. In contrast to the homogeneous diffusion, SDP brings about harder spectra of background CRs and thus enhances background electron and positron fluxes above tens of GeV. Thereby, the SDP model could better reproduce both electron and positron energy spectra when introducing a local pulsar. The influence of the background source distribution is also investigated, where both axisymmetric and spiral distributions are compared. We find that considering the spiral distribution leads to a larger contribution of positrons for energies above multi-GeV than the axisymmetric distribution. In the SDP model, when including a spiral distribution of sources, the all-electron spectrum above TeV energies is thus naturally described. In the meantime, the estimated anisotropies in the all-electrons spectrum show that in contrary to the homogeneous diffusion model, the anisotropy under SDP is well below the observational limits set by the Fermi-LAT experiment, even when considering a local source.
Observational constraints on Rastall gravity from rotation curves of low surface brightness galaxies *
Authors: Tang Meirong , Xu Zhaoyi , Wang Jiancheng 
Published: July 2020

Abstract
Rastall gravity is a modification of Einstein's general relativity in which the energy-momentum conservation is not satisfied and depends on the gradient of the Ricci curvature. It is currently in dispute whether Rastall gravity is equivalent to general relativity (GR). In this work, we constrain the theory using the rotation curves of low surface brightness (LSB) spiral galaxies. By fitting the rotation curves of LSB galaxies, we obtain parameter

of the Rastall gravity. The

values of LSB galaxies satisfy the weak energy condition (WEC) and strong energy condition (SEC). Combining the

values of type Ia supernovae and the gravitational lensing of elliptical galaxies on Rastall gravity, we conclude that Rastall gravity may be equivalent to general relativity.
Climate adaptability construction features of a traditional thatched cottage from the Korean-Chinese in the Yanbian area
Authors: Gao Songhua , Jin Guanghu , Quan Haogaong 
Published: July 2020

Abstract
Traditional Korean-Chinese in the Yanbian area thatched cottages are well known to provide comfortable indoor environments using traditional heating methods, such as the Ondol, a stone slab that is used to maintain a comfortable heating level indoors. To determine the construction features for traditional Korean-Chinese thatched cottages, temperature, relative humidity, and black globe temperature were measured both indoors and outdoors to determine the heating capacity of various rooms in the building in September. Overall, the indoor temperature and relative humidity are relatively stable even when the outdoor temperatures and humidity fluctuated greatly throughout the day. The test results verified the superiority of the heating capacity of a traditional Korean-Chinese cottage.
Research On The Design Of Outdoor Play Space for Children’s Activities In Urban Area
Authors: Han Rong , Wang Yuxin , Shao Dandan 
Published: July 2020

Abstract
It is worth considering how to plan an outdoor play space, let the children spend a good time on it. This paper focuses on planning such a place that provides children with outdoor space in urban area. First is an analysis of the characteristics with children’s psychological activities and their way to outdoor actions, the desire in different ages. Then combining with existent problems, this paper will illustrate aspects include selection for field, separated area and elements worked out for each scene.
Hydrological Observation of Qiantang River in the River Crossing Tunnel of Metro Line 8
Authors: Zhou Hanyu , Dong Haiyang , Lu Hanzhang , Li Zongyu , Chen Fanjun 
Published: July 2020

Abstract
Observation on hydrological characteristics and sediment concentration were conducted in this research, and data analysis and summary were carried out on vertical tidal current flow and vertical sediment concentration. The hydrological and sediment environment of Qiantangjiang Metro Line 8 river-crossing channel was investigated.
Numerical simulation of the stability of deep roadway surrounding rock based on FLAC3D
Authors: Xiao-liang Jia 
Published: July 2020

Abstract
In view of the problems such as roadway section deformation caused by the roadway’s violent bottom drum, causing the roadway transportation and maintenance difficulties, the numerical simulation calculation software FLAC3D was used, and the numerical calculation was obtained, which was the vertical stress, horizontal stress distribution and plastic area distribution of the surrounding rock after the excavation of the roadway, and the analysis obtained the mechanism of the roadway bottom drum: because the weak top plate of the coal layer was disturbed by the weak top plate of the coal layer closer to the bottom of the roadway. Then the underside rock pressure of the roadway because of the bottom drum and continuous dynamic redistribution, and gradually to the right and deep development, and eventually lead to the bottom drum gradually deterioration and show left and right asymmetrical characteristics.
Upgrading project of leachate treatment station in a landfill site in Beijing
Authors: Ke Li , Xinsheng LU 
Published: July 2020

Abstract
The technical route and design for the upgrading the leachate treatment station of a landfill site in Beijing were systematically introduced. By strengthening the advanced treatment and introducing chemical oxidation of the effluent by sodium hypochlorite, the standard of leachate treatment effluent meets the requirements of the Beijing DB11/307-2013 “Table 1” A level emission limits. At the same time, the original system is heated and heat preservation is used to meet the stable operation of the system in winter. It provides engineering design reference for the upgrading of landfill leachate treatment.
A Study on Automatic Form Optimization Procedures of Building Performance Design Based on “Ladybug+Honeybee”
Authors: Hu Jiaxi , Wang Zhenyu , Chen Wang 
Published: July 2020

Abstract
This paper discusses a method for integrating parametric design with building form automatic optimization for energy-saving, specifically presenting Ladybug+Honeybee, as a representative parametric building performance analysis tool, and the design methodology that are suitable for the early stage of the building scheme phase. In this study, an ideal procedure for integration of parametric modeling and building performance analysis was developed. The procedure includes four steps: 1) parametric form definition; 2) adaptability relationship analysis; 3) automatic form optimization; 4) simulation measurement and post evaluation. Taking a coastal hotel building in hot-summer-warm-winter area as an example to explore the automatic form optimization for energy-saving.
Numerical Investigation of key design parameters impact on energy consumption of commercial complex distributed atrium in cold area of China
Authors: Zhengyu Fan , Yihua Zhang 
Published: July 2020

AbstractThe high energy consumption of atrium in cold area is prominent. Both single and distributed atriums have been widely employed in commercial complex buildings, while their energy consumption performance and mechanism are not the same. Currently, far too little research has been carried out over energy-saving design of distributed atrium. In this study, the typical representative archetypes of distributed atrium, including chessboard, peripheral, series and road network types, have been numerically investigated. Through the energy consumption simulations, the impact and impartance of various design parameters such as proportion, height, plane layout, has been examined. Atrium proportion, height, general layout, aggregation and uniformity can be accounted as the key design parameters of the distributed atrium design. The simulation results that with the increase of the volume of atrium, the unit energy consumption increases. Compared with other types, the surrounding atrium is more energy-saving. With the improvement of plane uniformity of atrium, the total energy consumption of building increases. This study can provide valuable reference for the design of distributed atrium in cold area.
Review of Indoor Environmental Quality Evaluation Index Based on Regional Climate Connected Green Building
Authors: Sun Yanchao , Wang Binying , Liu Denglun 
Published: July 2020

Abstract
This article will review and analyses the indoor environment quality indicators in the existing green building rating system, both foreign and Chinese green building standards. Based on the relevance of ‘human climate architecture’, the indoor environment quality indicators which are intuitively perceivable, health related and connected to regions and climates will be sorted out, to establish the foundation for further indoor environmental quality index classification research.
A review of the application of renewable energy in the design standard system of public buildings in China
Authors: Zhengyu Fan , Zehui Yang , Liu Yang 
Published: July 2020

Abstract
Energy consumption in building sector remains high. Utilizing renewable energy in buildings can help to reduce the consumption of conventional energy. Through the research on the current standard system of public building design and related literature in China, this paper classifies the main standards involved in the common design process of public building. It aims to summarize the characteristics and shortcomings of renewable energy utilization in the field of public buildings in China, and put forward some suggestions. This paper presents the main technical contents and evaluating index system of the renewable energy utilization. It can be concluded that the practical existing problems are the weak connection between renewable energy utilization and architecture design. It is suggested that consideration of renewable energy application in the whole design process should be strengthened, and development suggestions of climate and site resource and energy conditions should be added.
Compressive strength and pore structure of cement paste with metakaolin
Authors: Li Chuang , Fan Yingfang , Yu Jian 
Published: July 2020

Abstract
Compressive strength, Ca(OH)2 content and pore structure of cement paste with metakaolin (MK) were investigated by compressive strength test, diffraction of x-rays, nitrogen adsorption test and mercury intrusion porosimetry. The results show that the addition of MK can improve the compressive strength of cement paste, reduce the content of Ca(OH)2 of cement paste, and reduce porosity of cement paste.
Study on non-limit active earth pressure of finite soil under T mode
Authors: Jian-xu Chen , Jin-liang Zhuang 
Published: July 2020

Abstract
Under the T (translation) mode, the active earth pressure of the limit soil is closely related to the displacement of the retaining wall and the width of the backfill of the wall. Based on the plane sliding assumption, fully considering the influence of the width of the backfill wall and the displacement of the wall on the internal and external friction angles, a balance equation is established, and the different backfill widths of the wall under any translational displacement are derived Formula of active earth pressure. The analysis shows that the fracture angle of the soil decreases with the increase of the soil width, decreases with the increase of the displacement or decreases first and then increases; the size of the active earth pressure of the limited soil decreases with the increase of the displacement; its soil Whether the pressure distribution intersects with the Coulomb earth pressure distribution depends on the width-to-height ratio of the fill. The intersection point gradually transitions from the bottom of the wall to the top of the wall as the ratio of displacement to the limit displacement increases, only when the width-to-height ratio is not less than 0.5 and the displacement reaches the limit. The solution in this paper is approximately equal to the Coulomb solution.
Research on the restrictive factors of the development of Chinese prefabricated buildings
Authors: Cheng Dan , Ma Jianxun 
Published: July 2020

Abstract
Prefabricated construction is one of the development directions of green construction in China. Its characteristics of fast construction speed and low energy consumption can promote the rapid development of prefabricated buildings. This paper compares the development of prefabricated components at home and abroad. Through literature review and questionnaire survey, five main factors restricting the development of prefabricated buildings are determined. After that, with the government and the market as the main body, the paper puts forward countermeasures to promote the development of prefabricated buildings from demand, technology, cost and other aspects.
Carbon emission modeling and analysis of building materialization process
Authors: Luo W J , Ma X C , Meng C Y , Xu L J , Tsou J Y , Yang S L , Mao Z C 
Published: July 2020

Abstract
The environmental properties of building assembly and recycled concrete are becoming highly related to the theme of the construction industry developments. Therefore, in order to account for the reduction effect of greenhouse gas arising from the combination of such two techniques, the building materialization process is divided into fabrication stage, transport stage, and site operation stage, and the calculation model for the assembled monolithic recycled concrete structures, ordinary assembled monolithic concrete structures, and cast-in-place concrete structures is established. Analyses and comparisons on the cases in Chongqing can be conducted owing to the model. The research results show that from the perspective of the entire materialization process, OAMCS can save 25.94% of carbon emissions compared to CCS per cubic meter of components, while AMRCS can further save 8.5% of carbon emissions compared to OAMCS per cubic meter of components, which can provide basic data for emission reduction and facilitate integration of the two techniques.
On the Renovation of Energy-saving Technology of Universities Teaching Buildings in the Cold Regions
Authors: Chen Li sheng 
Published: July 2020

Abstract
At present, construction industry march toward energy saving and environmentally friendly. Renovation of energy-saving technology of universities teaching buildings are on the track. However, particular measures should be taken to deal with the unusual natural environment in the cold regions. Based on the paper will mainly study the importance of the Renovation of energy-saving technology of universities teaching buildings discuss, the difficulties during the execution and analyze the specific means.
Effect of Building Form on Energy Consumption of Academic Library Buildings in Different Climate Zones in China
Authors: Deng Xinmei , Wang Mengyuan , Sun Dongxian , Fan Zhengyu 
Published: July 2020

Abstract
This research focuses on the energy efficiency of academic library buildings with their shape in four major climate zones in China. According to their varieties in shapes and their representativeness in current constructions, eight hypothetical models of four types (point, slab, block, comb) are built based on the form of actual academic library buildings in recent years. The relationship between the building forms and building energy consumption is simulated and analysed with the software Design Builder. Results show that with the same construction area, different building forms can lead to variations in energy consumption in different climate zones. The slab-type is relatively energy-saving in most climate zones, while the block-type and E-shaped comb-type are more suitable for hot summer and warm winter zone. The building shape coefficient is an important parameter for reducing energy consumption in severe cold and cold zone, but the role of building depth is also sensitive. This information is dedicated to the architects at the early design stage of a project from the perspective of energy consumption.
Application of peanut biochar as admixture in cement mortar
Authors: Han Tianhao 
Published: July 2020

Abstract
Nowadays, waste problem has become critical because of the increasing of population, so how to manage them is an important issue. Due to high content of carbon in daily waste, some researchers pyrolyzed these materials to make biochar which can be used in many fields. In civil engineering filed, concrete has become the main material used to build most of buildings, due to its excellent performance and low cost. As the main component of concrete, the using of mortar cement is a large number. Thus, this study aimed to research some information about peanut biochar which were from normal daily waste and measure some parameters about peanut biochar, then explored the feasibility of replacing part of mortar cement by peanut biochar.
This study researched different percentage mixing of peanut biochar (1%,3%) in cement mortar and measured some properties such as compressive strength to check the feasibility of using biochar in cement mortar under water curing. In these tests, mixing peanut biochar also can improve the 7-day and 28-day density of cement mortar. Meanwhile, 1% and 3% addition of peanut biochar in cement mortar does not perform an obvious improvement in 7-day compress strength, but a slight increase happens in 28-day compressive strength about these two different percentage of mixing. From these results, peanut biochar can be a replacement to mix into mortar cement.
Research on Comprehensive Energy Management System Technology
Authors: Jing Yiwen 
Published: July 2020

Abstract
This paper studies the research status of the energy internet and integrated energy management platform, the analysis of the improvement of energy efficiency and economic efficiency of clean energy of distributed power, and the establishment of mathematical models for some parts of the energy management system and analysis to evaluate different types of pluripotent complementary system of comprehensive benefits, from the three-dimensional aspects of economic, environmental and other aspects of system security level and the establishment of systems for comprehensive benefit evaluation system, and the various indicators and correlation tests standardization process. The case analysis of the proposed model is carried out to verify the effectiveness of the proposed evaluation model and the comprehensive benefits of the multi-energy complementary system in the park.
Analysis of the Impact of Wire Resistance on Nano-scale Memristor Crossbar Array Implementing Perceptron Neural Network
Authors: Truong Son Ngoc 
Published: July 2020

Abstract
In this work, the impact of wire resistance in pure memristor crossbar array is mathematically analysed and verified by the circuit simulation. The memristor crossbar without CMOS device is utilized for application of character image recognition, in which wire resistance is presented. Memristor crossbar circuit is analysed separately with respect to wire resistance on vertical line and wire resistance on horizontal line. The result shows that wire resistance on vertical line can be eliminated because they can be self-compensated. The simulation result agrees with the analysis. The variation of output voltage caused by wire resistance less affect the recognition rate of memristor circuit. On the other hand, when wire resistance on horizontal line is assumed to be 2.5Ω. The output voltages are varied remarkably. Such variation of output voltage degrades the recognition rate of memristor crossbar circuit. The interesting phenomenon is also investigated. The column that is close to the first column has less variation of output voltage, whereas the one that is far from the first column has much variation of output voltage. The result can be used in improving the memristor crossbar architecture, which can tolerate the impact of wire resistance. For example, if we want to increase the size of crossbar, we should increase the number of rows, rather than the number of columns.