Research and exploration of direct current power supply and distribution systems for Antarctic research stations

The power supply and distribution systems for Antarctic research stations have special characteristics.In light of a worldwide trend toward a gradual increase in the application of renewable energy,an analysis was performed to assess the feasibility of achieving a direct current power supply and distribution at Antarctic research stations by comparing the characteristics of direct current and alternating current electricity.Research was also performed on the status quo and future trends in direct current power supply and distribution systems in Antarctica research stations in combination with case studies.

Problem identification and revitalization strategies for the recovery and reconstruction of traditional villages in the Ms 6.8 Luding Earthquake

Post-disaster reconstruction is a topic of global concern,and traditional villages have special heritage attributes and need to face more requirements and obstacles in post-disaster reconstruction.This paper summarizes four concepts based on the research on post-disaster reconstruction both domestically and internationally,as well as the recovery and reconstruction of cultural heritage.Through a field survey of traditional villages in the Ms 6.8 Luding earthquake-stricken area,it is found that there are problems such as insufficient awareness of heritage value,misalignment of scientific reconstruction technology,and insufficient protection of reconstruction elements during the reconstruction process.Traditional villages face the risk of declining or even loss of heritage value.In order to effectively protect traditional villages and inherit the carrier of regional culture,four targeted reconstruction response strategies are proposed,i.e.,to"establish special planning for traditional village preservation","emphasize recovery of the authenticity of village heritage","ensure elements for village heritage recovery"and"promote the activation and utilization of village heritage",based on the problems discovered during the survey and the four concepts summarized in the research on post-disaster reconstruction of traditional villages.The research results hope to provide useful reference for ancient cultural areas affected by earthquakes on how to protect cultural heritage during the post-disaster reconstruction process.

Operation optimization of prefabricated light modular radiant heating system:Thermal resistance analysis and numerical study

The utilization of prefabricated light modular radiant heating system has demonstrated significant increases in heat transfer efficiency and energy conservation capabilities.Within prefabricated building construction,this new heating method presents an opportunity for the development of comprehensive facilities.The parameters for evaluating the effectiveness of such a system are the upper surface layer’s heat flux and temperature.In this paper,thermal resistance analysis calculation based on a simplified model for this unique radiant heating system analysis is presented with the heat transfer mechanism’s evaluation.The results obtained from thermal resistance analysis calculation and numerical simulation indicate that the thermal resistance analysis method is highly accurate with temperature discrepancies ranging from 0.44℃ to−0.44℃ and a heat flux discrepancy of less than 7.54%,which can meet the requirements of practical engineering applications,suggesting a foundation for the prefabricated radiant heating system.

Reflections on the Improvement of Rural Human Settlement Environment from the Perspective of Beauty and Livability

The construction of beautiful and livable villages is one of the important tasks of ruralrevitalization in the new era, and the development of rural areas attaches more and more importanceto the improvement of human settlement environment. By investigating the construction status andexisting problems of Zhaoba Village in Nanjing, it tries to take “beauty” and “livability” as the planningrequirements. The village positioning is planned accurately, and the functional layout is carried outreasonably. According to the characteristic industries, landscape features and infrastructure of ZhaobaVillage, humanized construction strategies are put forward, thus improving the quality of human settlementenvironment in Zhaoba Village.

Characteristics and Trends of Urban Waterfront Human Settlements Based on CiteSpace

Urban waterfront human settlements have gradually become a hot topic for research in recent years.Using CiteSpace,597 publications from 2017 to 2023 that were retrieved from the Web of Science were analyzed and sorted out,and the following characteristics were found:(1)The research hotspots transitioned from thermal comfort evaluation to the functional mechanism of water bodies,and then to the impact on the environment and residents’behavior.(2)The integration of disciplines has promoted the diversification of perspectives on urban waterfront human settlements,and the content has become more concentrated in interdisciplinary fields.Research on corresponding technology and methods of urban waterfront human settlement has improved,and so has the extensiveness of the experiments.(3)The research on urban waterfront human settlement from the perspective of ecology has been improving.The research focuses more on the harmonious coexistence of ecological and cultural values and human beings.

Design and development of infrastructure of the Dome A Kunlun Station(2005–2015)

To enable further advanced study of Antarctica, a new station called Kunlun Station has been built by China in the Dome A region of the inland East Antarctic ice sheet. This paper describes the Antarctic station building design system that was developed with consideration of factors that may affect Kunlun Station, such as environment and climate, construction work and transport, environmental protection and energy conservation, psychological requirements and functional requirements. The design system included site selection, station planning, external building form, construction work, function and indoor environment, energy conservation, environmental protection, and material strategy. We also describe the experience acquired during the transportation and construction phases of Kunlun Station.

Architectural Design Concept of Dongting Lake Museum

Architectural design of Dongting Lake Museum takes "River dolphin ripples in the Dongting Lake" as the theme, tries to integrate into the local wetland environment and ecological resources of the Dongting Lake, in order to realize the dream of "making a great museum for the most gorgeous lake". The overall layout follows the concept of "coexistence of real and virtual, integration of exterior and interior", and the architectural image symbolizes "the river dolphin ripples", which is extremely harmonious in the whole natural environment. The design integrates planning, building, landscape and interior spaces, adopts technical means and ecological green to integrate the building into the environment, and presents us a tremendous ecological wetland museum that floats on the lake like a fish, an islet, a sail or a hill.

Comparison of the Spatial Design Idea between Geunjeongjeon of Seoul and Chongzheng Hall in Shenyang imperial palace

The construction of the palace carries with it the importance of a country＇s political power. It shows the highest degree of a country＇s culture and represents the significant of planning artistic style.The modes of landscape plan of both Geunjeongjeon of Seoul Gyeongbokgung,and Chongzheng Hall in Shenyang imperial palace is characterized with the unique national culture under its own construction background. This article is to find out the feature of the spatial construction and the deepen artistic by analyzing the Plan technique structure modelling design and eyesight design for sDatial of the two palaces.

Wind-Thermal Environmental Characteristic of Multi-Variable Passive Enhanced Natural Ventilation System for High and Large Space Building

Natural ventilation effects in high and large space buildings of tropical areas greatlya ffect the air conditioning energy consumption.Aiming at nearly zero energy building design,thisp aper mainly contributes to provide theoretical basis and reference for thermal comfortable air conditioning system design of high and large space buildings.Taking a theatre in Hainan as study object,a newly composite enhanced natural ventilation system is proposed by integrating theu nderground tunnel-based earth to air heat exchange system and the solar chimney.Ventilationq uantity,air velocity and air temperature field,human vertical temperature gradient differenceu nder24simulation working conditions are considered and analyzed by using ANSYS Fluent.Fort he underground tunnel,results show that Group Two with double underground tunnels and side airs upply location shows its advantages in cooling effects and air supply uniformity.Then for the solar chimney,results show that the solar radiation intensity contributes to larger difference int ransmission power and leads to different cooling effects.On the whole,the system under workingc ondition No.7with120m long,side air supply,double underground tunnel and20m high,1mw ide,0.6°absorber plate angle solar chimney shows its priority in better comprehensive performance.

Design Innovation and Practice of“One Stationwith One Landscape”for High Speed Railway Stations

Since the founding of New China,railway station design has experienced a long development and evolution process,and has now developed to the fourth generation,which is called the New Era Railway Station.Guided by the new concept of building up a“well-connected fully-integrated,envionmeni-friendly passenger-oriented,economic-efficient,culturally-rich,intelligent and convenient”station,the station building becomes more personalized and specialized displaying distinctive effects,and the design connotation of“one station with one landscape”has also been widened and deepened From the simple differentiated design of facade image,the design is gradually becoming station-specific and customized with station-city integrated development and passengers'boarding and alighting feelings as the core.The purpose is to make the station truly become a prominent card and landmark building that facilitates city development.

建筑全生命周期碳排放——内涵、计算和减量

The life-cycle assessment method,which originates from general products and services,has gradually come to be applied to investigations of the life-cycle carbon emissions(LCCE)of buildings.A literature review was conducted to clarify LCCE implications,calculations,and reductions in the context of buildings.A total of 826 global building carbon emission calculation cases were obtained from 161 studies based on the framework of the building life-cycle stage division stipulated by ISO 21930 and the basic principles of the emission factor(EF)approach.The carbon emission calculation methods and results are discussed herein,based on the modules of production,construction,use,end-of-life,and supplementary benefits.According to the hotspot distribution of a building’s carbon emissions,carbon reduction strategies are classified into six groups for technical content and benefits analysis,including reducing the activity data pertaining to building materials and energy,reducing the carbon EFs of the building materials and energy,and exploiting the advantages of supplementary benefits.The research gaps and challenges in current building LCCE studies are summarized in terms of research goals and ideas,calculation methods,basic parameters,and carbon reduction strategies;development suggestions are also proposed.

Research on wind-induced responses of a large-scale membrane structure

The wind-induced responses of a large-scale membrane structure, Expo Boulevard, are evaluated in this study. To obtain the wind pressure distribution on the roof surface, a wind tunnel test is performed. A brief analysis of wind pressure on the membrane roof is conducted first and then an analysis of the wind-induced responses of the structure is carried out using a numerical integral method in the time domain. In the process of calculation, the geometrical nonlinearity is taken into account. Results indicate that mean, RSM and peak values of the structure responses increase nonlinearly while the approaching flow velocity increases. Strong nonlinear characteristics are observed in the displacement responses, whereas the responses of nodal stress and cable axial force show minimal nonlinear properties when the membrane structure is subjected to wind loads. Different values of the damping ratio only have a minimal impact on the RSM response of the structure because the background component is a dominant part of the total dynamic response and the resonant component is too small. As the damping ratio increases from 0.02 to 0.05, the RMS responses of vertical displacement, nodal stress and cable axial force decrease by 8.1%, 6.7% and 17.9%, respectively. Since the mean component plays a significant role in the wind-induced response, the values of the gust response factor are not high for Expo Boulevard.

An Intelligent IEQ Monitoring and Feedback System:Development and Applications

Indoor environmental quality(IEQ)significantly affects human health and wellbeing.Therefore,continuous IEQ monitoring and feedback is of great concern in both the industrial and academic communities.However,most existing studies only focus on developing sensors that cost-effectively promote IEQ measurement while ignoring interactions between the human side and IEQ monitoring.In this study,an intelligent IEQ monitoring and feedback system-the Intelligent Built Enviroment(IBEM)-is developed.Firstly,the IBEM hardware instrument integrates air temperature,relative humidity,CO_(2),particulate matter with an aerodynamic diameter no greater than _(2.5)μm(PM_(2.5)),and illuminance sensors within a small device.The accuracy of this integrated device was tested through a co-location experiment with reference sensors;the device exhibited a strong correlation with the reference sensors,with a slight deviation(R^(2)>0.97 and slopes between 1.01 and 1.05).Secondly,a wireless data transmission module,a cloud storage module,and graphical user interfaces(i.e.,a web platform and mobile interface)were built to establish a pathway for dataflow and interactive feedback with the occupants of the indoor environments.Thus,the IEQ parameters can be continuously monitored with a high spatiotemporal resolution,interactive feedback can be induced,and synchronous data collection on occupant satisfaction and objective environmental parameters can be realized.IBEM has been widely applied in 131 buildings in 18cities/areas in China,with 1188 sample locations.Among these applications,we report on the targeted IEQ diagnoses of two individual buildings and the exploration of relationships between subjective and objective IEQ data in detail here.This work demonstrates the great value of IBEM in both industrial and academic research.

Performance and dynamics of nano-size ZnO doped with metallic elements for desulfurization at room temperature

The desulfurizer research is focused on transition-metal oxide.The paper had discussed in depth the desulfurization activity of nano-size ZnO doped with metallic elements.In order to improve the desulfurization activity of nano-desulfurizer,we prepared the nano-size ZnO desulfurizer doped with iron,nickel and copper ionic respectively,using homogeneous precipitation.At the same time,the effects of different doped elements on the desulfurization activity of nano-size ZnO were compared by removing the pollutant of H2S.The experimental results showed that the desulfurization activity of metallic elements-doped nano-size ZnO increased significantly.When the molar ratio of Fe/Zn is 5:100(FZ5.0) and Cu/Zn is 2:100(CuZ2.0),their sulfur contents are 5.3% and 5.6% respectively.These desulfurizers can reach better desulfurization activity than that doped with nickel.Further research showed that,for CuZ2.0,the primary desulfurization activity is better than that of FZ5.0,but the regeneration temperature is as high as 570 ℃,and after three times regeneration/sulfuration cycle tests,the desulfurization activity decreases obviously.However,FZ5.0 can be recycled 5 times continuously at 370℃ with a stable desulfurization activity.In view of the better regeneration/sulfuration performance of FZ5.0,the dynamics of the removing H2S process by FZ5.0 were further studied.The result showed that the reaction order of removing H2S by FZ5.0 is 0.96385 at 25 ℃.

Analysis of Tibetan Cities and Towns in Sichuan——A Case Study of Traditional Tibetan Settlements in Gengqing Town, Dege County

Tibetan area is a region consisting of different nationalities and cultures,it has special settlement forms.Dege is a historic and cultural center of Kangba area,local architecture has profound cultural background,it is an important representative of traditional Tibetan buildings in Sichuan.This paper explored the forms of Tibetan forms and architectural spaces,summarized architectural features of Tibetan folk dwellings in Sichuan,and studied formation and evolution of traditional settlements in Gengqing Town in an all-around way.

Method to analyze wrinkled membranes with zero shear modulus and equivalent stiffness

To solve the problems of divergence,low accuracy and project application of membrane wrinkling analysis,an analysis method of zero shear modulus and equivalent stiffness was proposed.This method is an improvement to the previous method (Method I) of local coordinate transposition and stiffness equivalence.The new method is derived and the feasibility is theoretically proved.A small-scale membrane structure is analyzed by the two methods,and the results show that the computational efficiency of the new method (Method II) is approximately 23 times that of Method I.When Method II is applied to a large-scale membrane stadium structure,it is found that this new method can quickly make the second principal stress of one way wrinkled elements zero,and make the two principal stresses of two-way wrinkled elements zero as well.It could attain the correct load responses right after the appearance of wrinkled elements,which indicates that Method II can be applied to wrinkling analysis of large-scale membrane structures.

Structural Design of a Tall Building with Underpinning Structure in Guangzhou

This paper introduces the structural design optimization of a tall building with reinforced concrete frame-core shear walls in Guangzhou downtown.To decrease the construction cost,wide flat beam with 400 mm ×650 mm rectangular cross-section are adopted for main beam.Special measures are used to decrease noncoincident centers of mass and stiffness.Because subway tunnels cross the building underground,inclined columns,the second and third floor underground together function as the underpinning structures.Different from traditional transform beam,the proposed underpinning structures show good performance without using large dimensional bending members.Special attentions should be paid to the beams connecting with the inclined column in the underpinning structures,and these beams show large tensile or compressive forces.Settlement observations after completion construction indicate that the building as well as the proposed design measures work well.

Planning and Orientation Analysis of Urban Environmental Landscape Aesthetic Value

Landscape is people’s evaluation of the environment which is better and more meaningful to visit.Therefore,a landscape must have a good environment.Landscape exists in nature as well as in cities.Every corner of a city can be a landscape.Its connection with the city and the citizens is inseparable.However,due to the acceleration of urbanization,there are still many problems in the urban environment.To solve these problems perfectly,we should work from the aesthetic value and planning orientation of the landscape.Therefore,this paper discusses and analyzes the problems of urban environment and how to use the aesthetic value and orientation to construct urban environmental landscape.

The Ambiguous Boundary between Buildings and Environment: Exploring the Interpretation of Traditional Aesthetic in Contemporary Japanese Architecture

At present, nature is becoming more and more important in people’s mind. It is a very popular way to combine nature and humanity in architecture. Japanese architects have deep research and attainments in this respect, and combined with Japan’s unique humanistic care characteristics, can make the whole architectural style more lifelike. This paper will analyze the architectural style of Japan from several aspects and put forward its own views.

The Impact of COVID-19 on Informal Employment and the Measures Taken by the Chinese Government:The Analysis of Street Vending Economy in Nanjing

To revitalize Chinese economic activities under the influence of the pandemic,the Chinese government adjusts the policies and attitudes about street vending.Taking Nanjing as a typical example of a city of street vending,the paper expounds in-depth on the positive impact of street vending on the economy after the pandemic.Meantime,it also describes the new management policies of street vending made by the Nanjing government to develop with a good trend.In addition,the paper directly reflects Nanjing people’s views on street vending and the resulting behavior through professional data.Finally,through the analysis of the advantages of street vending,it proves that the support from street vending in the Chinese economy is non-negligible after the pandemic.