Superfluous Things, written by scholar Wen Zhenheng in the Ming Dynasty, is regarded as the encyclopedia on Chinese ancient landscape architecture and environmental design. It analyzed Chinese traditional garden syste...Superfluous Things, written by scholar Wen Zhenheng in the Ming Dynasty, is regarded as the encyclopedia on Chinese ancient landscape architecture and environmental design. It analyzed Chinese traditional garden systematically and comprehensively. This study emphasizes the contemporary value of the principles and methods in Superfluous Things. According to the book, 2 key environmental building principles that can be applied into modern landscape design have been put forward:(1) artificiality should fit with natural conditions;(2) less without reduction. Based on these, a coupling point on the practice and research of building a sustainable and friendly environment has been found, which combines natural resources, human needs, economic benefits and cultural factors.展开更多
As computer simulation increasingly supports engine er ing design and manufacture, the requirement for a computer software environment providing an integration platform for computational engineering software increas e...As computer simulation increasingly supports engine er ing design and manufacture, the requirement for a computer software environment providing an integration platform for computational engineering software increas es. A key component of an integrated environment is the use of computational eng ineering to assist and support solutions for complex design. Computer methods fo r structural, flow and thermal analysis are well developed and have been used in design for many years. Many software packages are now available which provi de an advanced capability. However, they are not designed for modelling of powde r forming processes. This paper describes the powder compaction software (PCS_SU T), which is designed for pre- and post-processing for computational simulatio n of the process compaction of powder. In the PCS_SUT software, the adaptive analysis of transient metal powder forming process is simulated by the finite element method based on deformation theories . The error estimates and adaptive remeshing schemes are applied for updated co -ordinate analysis. A generalized Newmark scheme is used for the time domain di scretization and the final nonlinear equations are solved by a Newton-Raphson p rocedure. An incremental elasto-plastic material model is used to simulate the compaction process. To describe the constitutive model of nonlinear behaviour of powder materials, a combination of Mohr-Coulomb and elliptical yield cap model is applied. This model reflects the yielding, frictional and densification char acteristics of powder along with strain and geometrical hardening which occurs d uring the compaction process. A hardening rule is used to define the dependence of the yield surface on the degree of plastic straining. A plasticity theory for friction is employed in the treatment of the powder-tooling interface. The inv olvement of two different materials, which have contact and relative movement in relation to each other, must be considered. A special formulation for friction modelling is coupled with a material formulation. The interface behaviour betwee n the die and the powder is modelled by using an interface element mesh. In the present paper, we have demonstrated pre- and post-processor finite elem ent software, written in Visual Basic, to generate the graphical model and visua lly display the computed results. The software consist of three main part: · Pre-processor: It is used to create the model, generate an app ropriate finite element grid, apply the appropriate boundary conditions, and vie w the total model. The geometric model can be used to associate the mesh with th e physical attributes such as element properties, material properties, or loads and boundary conditions. · Analysis: It can deal with two-dimensional and axi-symmetric applications for linear and non-linear behaviour of material in static and dyna mic analyses. Both triangular and quadrilateral elements are available in the e lement library, including 3-noded, 6-noded and 7-noded (T6B1) triangles and 4 -noded, 8-noded and 9-noded quadrilaterals. The direct implicit algorithm bas ed on the generalized Newmark scheme is used for the time integration and an aut omatic time step control facility is provided. For non-linear iteration, choice s among fully or modified Newton-Raphson method and quasi-Newton method, using the initial stiffness method, Davidon inverse method or BFGS inverse method, ar e possible. · Post-processor: It provides visualization of the computed resu lts, when the finite element model and analysis have been completed. Post-proce ssing is vital to allow the appropriate interpretation of the completed results of the finite element analysis. It provides the visual means to interpret the va st amounts of computed results generated. Finally, the powder behaviour during the compaction of a multi-level component is numerically simulated by the PCS_SUT software, as shown in Fig.1. The predict ive compaction forces at different displacements are computed and compared with the available experimental展开更多
In todays context of advocating mass entrepreneurship and innovation, colleges and universities should always adhere to advanced teaching concepts, actively explore and constantly explore the feasible way of practical...In todays context of advocating mass entrepreneurship and innovation, colleges and universities should always adhere to advanced teaching concepts, actively explore and constantly explore the feasible way of practical teaching reform, promote the improvement of teaching quality, and cultivate high-quality social talents. At present, the practical teaching system in most colleges and universities in China is not perfect and it still follows the traditional teaching mode which violates the growth needs of students and the teaching objectives of the new curriculum. In view of this, this paper takes the innovation and entrepreneurship teaching as the background, explores and studies how to build the practical teaching system of environmental design major and realize the teaching reform as the theme and puts forward the corresponding reform suggestions.展开更多
A CAD tools environment is described to support concurrent collaborative design. The environment has four components: shared design representation, design process control, CAD tools, designer interface. So...A CAD tools environment is described to support concurrent collaborative design. The environment has four components: shared design representation, design process control, CAD tools, designer interface. Some related issues for the construction, such as form feature handling, constraint satisfaction, design process control, STEP based information integration, are discussed in more detail.展开更多
The objective of a bridge design is to produce a safe bridge that is elegant and satisfies all functionality requirements, at a cost that is acceptable to the owner. A successful bridge design must be natural, simple,...The objective of a bridge design is to produce a safe bridge that is elegant and satisfies all functionality requirements, at a cost that is acceptable to the owner. A successful bridge design must be natural, simple, original, and harmonious with its surroundings. Aesthetics is not an additional consideration in the design of a bridge, but is rather an integral part of bridge design. Both the structural configuration and the aesthetics of a bridge must be considered together during the conceptual design stage. To achieve such a task, the bridge design engineer must have a good understanding of structural theory and bridge aesthetics.展开更多
LCM （life cycle management） is a systematic approach, mindset and culture that considers economic, social, and environmental factors among other factors in the decision making process throughout various business or ...LCM （life cycle management） is a systematic approach, mindset and culture that considers economic, social, and environmental factors among other factors in the decision making process throughout various business or organizational decisions that affect both inputs and outputs of a product or service life cycle. It is a product, process, or activity management system aimed at minimizing environmental and socio-economic burdens associated with an organization＇s product or process during its entire life cycle and value chain. LCM＇s application is gaining wider acceptance both in the corporate and governmental organizations as an approach to reduce ecological footprints and to improve the sustainability of human activities. But where and how can it be used in agricultural engineering applications？ This study highlights the potential areas of LCM application in agricultural and allied sectors and how it can be utilized. The study revealed that LCM tools such as design for environment and life cycle analysis can be used to evaluate the environmental impacts of-and to improve the products, equipment, and structures produced by biosystems engineers as well as the processes used to generate them.展开更多
The whole superconducting HT-7U Tokamak is a high-cost and large-scale complicated device. The assembly requirement of HT-7U device is arduous and strict. At present, there have been no guiding principle for the assem...The whole superconducting HT-7U Tokamak is a high-cost and large-scale complicated device. The assembly requirement of HT-7U device is arduous and strict. At present, there have been no guiding principle for the assembly of the device, but assembly simulation can help the engineer plan and make decision by an intuitional and visual way before its actual assembly. The problem is that which scheme is most suitable should be solved primarily. From current research situation and technology progress of assembly simulation, this paper explained and analyzed four kinds of technological schemes of assembly simulation in common use. Finally, we got the most feasible scheme that was suitable for HT-7U assembly simulation by comparing their technological issues and difficult points of simulation among the four kinds of feasible schemes.展开更多
A sustainable materials management for metals should be achieved to conserve resources of metal minerals.For the sustainable materials management,material flows through the whole life cycle of materials have been reco...A sustainable materials management for metals should be achieved to conserve resources of metal minerals.For the sustainable materials management,material flows through the whole life cycle of materials have been recognized by material flow analysis(MFA) studies.Former MFA studies pointed out that cyclic use of metals could be enhanced not only by increasing quantity of recovered scrap but also by upgrading quality of the scrap.In general,the quality is degraded by contaminants which commingle at disassembling processes.The mixture of contaminants depends on usage of materials in products.Here,Type I ecolabelling has a potential to convey messages for avoiding mixture of contaminants to the producers of finished products.In this study,on the basis of a survey on existing certification criteria related to metals in the world,a general concept of certification criteria on sustainable materials management for metals in Type I ecolabelling system is proposed.Finally,we propose six criteria in the form of certification criteria in Type I ecolabelling system.展开更多
The Intemational Concordia explorer telescope （ICE-T） is a f/1.1 Schmidt telescope, 61 cm aperture, with two optical tubes equipped with identical charged coupled devices 10.3× 10.3 k, 9μ pixel size, ultra-wi...The Intemational Concordia explorer telescope （ICE-T） is a f/1.1 Schmidt telescope, 61 cm aperture, with two optical tubes equipped with identical charged coupled devices 10.3× 10.3 k, 9μ pixel size, ultra-wide-fieldwith a total FOV of 65 square degrees. Its aim is to operate at Dome C, the French-Italian Antarctic Station, taking advantage of the long winter night for continuous observations. It is optimized for high precision photometry in two separate filters Sloan g and Sloan i ranging from 100 mmag to 10 mmag （from 9 to16 mag）. Among the scientific tasks there are the detection of hot Jupiters and Super Earths with the transit method, and related magnetic activity of the hosting stars. The 4m Radom dome for ICE-T together with 3 foundation pillars and the cables bundle have been already successfully installed in January 2009.展开更多
Increasing environmental awareness and stringent environmental regulations have motivated many companies to incorporate ecodesign into product development. To assist companies to address the challenge, this research p...Increasing environmental awareness and stringent environmental regulations have motivated many companies to incorporate ecodesign into product development. To assist companies to address the challenge, this research presents a design for environment （DfE） methodology to evaluate and improve derivative consumer electronic product development using a back-propagation neural network （BPNN） model and a technique for order preference by similarity to ideal solution （TOPSIS） method. Based on use of a BPNN, the life cycle assessment （LCA） models are developed to estimate quantities of hazardous chemical substances and energy consumption for a derivative consumer electronic product throughout the product life cycle. A performance evaluation and improvement model for DfE is then devised based on the TOPSIS method to analyze the ecodesign performance and provide concrete improvement strategies. With the aforementioned analysis of environmental performance, an enterprise can profoundly understand and significantly enhance the relative DfE performance of a new product compared to the similar competitive products. Finally, we apply an optical mouse development project as a case to elaborate and demonstrate the effectiveness of the proposed methodology. These analytical results can let us understand the DfE performance ranking and acquire the maximum reduced quantity of each DfE criterion for each module of a new product. Meanwhile, to enhance the green competitiveness of the new product, we recommend that the engineers should decrease the area of the circuit board of the new product. In addition, the material of the USB cable for the new product should be switched from the PVC material to the PE material.展开更多
To solve the optimal power flow(OPF)problem,reinforcement learning(RL)emerges as a promising new approach.However,the RL-OPF literature is strongly divided regarding the exact formulation of the OPF problem as an RL e...To solve the optimal power flow(OPF)problem,reinforcement learning(RL)emerges as a promising new approach.However,the RL-OPF literature is strongly divided regarding the exact formulation of the OPF problem as an RL environment.In this work,we collect and implement diverse environment design decisions from the literature regarding training data,observation space,episode definition,and reward function choice.In an experimental analysis,we show the significant impact of these environment design options on RL-OPF training performance.Further,we derive some first recommendations regarding the choice of these design decisions.The created environment framework is fully open-source and can serve as a benchmark for future research in the RL-OPF field.展开更多
Buildings have contributed to the energy shortage, pollution and global climate change. To promote green buildings is the way access to the sustainable development. Currently, China has issued some regulations and sys...Buildings have contributed to the energy shortage, pollution and global climate change. To promote green buildings is the way access to the sustainable development. Currently, China has issued some regulations and systems to boost the green building. However, problems lie in China and the systems are not effective. USA and EU have rich experiences and fairly sophisticated legislation and policies to develop green building. China may get some lessens from these countries. This paper will make an overview of legal framework and main system of green building in China, then, analyses some important legal systems and typical case related green building in the USA and EU. Further, problems were pointed out in the China based on the comparative analysis of these countries. Lastly, according to the condition in China and lessons from USA and EU, this paper will put some suggests to promote green building, such as, take some measures to enhance the awareness of the stakeholders, create multi- incentive tools and so on.展开更多
Thermoacoustic refrigerator （TAR） converts acoustic waves into heat without any moving parts. The study presented here aims to optimize the parameters like frequency, stack position, stack length, and plate spacing ...Thermoacoustic refrigerator （TAR） converts acoustic waves into heat without any moving parts. The study presented here aims to optimize the parameters like frequency, stack position, stack length, and plate spacing involving in designing TAR using the Response Surface Methodology （RSM）. A mathematical model is developed using the RSM based on the results obtained from DeltaEC software. For desired temperature difference of 40 K, optimized parameters suggested by the RSM are the frequency 254 Hz, stack position 0.108 m, stack length 0.08 m, and plate spacing 0.0005 m. The experiments were conducted with optimized parameters and simulations were performed using the Design Environment for Low-amplitude ThermoAcoustic Energy Conversion （DeltaEC） which showed similar results.展开更多
The conceptualization of the HousehoLd/Neighborhood Model for skilled nursing facilities began in 1987 at Evergreen Retirement Community in Oshkosh, WI, USA in the search for the ＂perfect＂ nursing home. Being able t...The conceptualization of the HousehoLd/Neighborhood Model for skilled nursing facilities began in 1987 at Evergreen Retirement Community in Oshkosh, WI, USA in the search for the ＂perfect＂ nursing home. Being able to see perfection required being freed from the mental constraints of regulations, reimbursement systems, and existing staff training programs so that visionary thinking was possible. ConceptuaLization was followed by a pilot project to test various aspects of the vision. The result was （1） a management philosophy built on Continuous QuaLity Improvement, （2） a team-based organization structure, （3） cross-functionaL staff roles, （4） sociaL-modeL activity programming, and （5） a residential style physical setting that won strong support from the State of Wisconsin. With this support, we had the opportunity to open in 1997 the first fuLL-scaLe model of a HousehoLd/Neighborhood in the United States based upon providing ＂resident and relationship centered services and care＂. The mode[ was validated through a year-tong evaluative research study. In 2004 we opened a second full-scale model incorporating significant improvements identified through experience. The opportunity to further develop the model has been provided through its adoption in China by China Senior Care, which wiLL open their first facility in 2014.展开更多
Scenic Hudson’s Long Dock Park is a resilient living work of art and a vibrant community asset for the Hudson River Valley.A 23-acre peninsula on the east side of the Hudson at Beacon,New York,the site includes the P...Scenic Hudson’s Long Dock Park is a resilient living work of art and a vibrant community asset for the Hudson River Valley.A 23-acre peninsula on the east side of the Hudson at Beacon,New York,the site includes the Peter J.Sharp Park and the Klara Sauer Hudson River Trail.Two decades in the making,beginning in 1997,it took a decade to plan and remediate,and,by its completion in early 2017,it will have taken just as long to build and recover.In 1997,nonprofit Scenic Hudson,the largest environmental and land preservation group focused on the Hudson River Valley,started assembling the different ownership parcels of the Long Dock site.From 1999 to 2003,they engaged the Beacon community through a series of community meetings and workshops to articulate its vision for its waterfront and cleanup of the site began.From 2003 to 2007,the design team developed the architectural and site program for the project,restoration measures,and its physical expression with the client.Working with the City and the New York State Department of Environmental Conservation(NYSDEC),the project completed the State Environmental Quality Review Act(SEQR)process,filing a Draft Environmental Impact Statement(DEIS)and received approval of the final EIS ensuring that there was significant environmental,social,or economic value.The NYSDEC and the U.S.Army Corps of Engineers(USACE)were also directly involved in oversight of the brownfield remediation and work within the Hudson River and site wetlands.With the SEQR process complete and approval of a mitigation plan from the USACE,the team worked with the City of Beacon to complete the site plan application process for construction.Our mandate was clear from the start-build resilience,but realize it incrementally.The project’s first phase,opened in 2009,included additional remediation and removal of contaminated soils,removal of invasive species,stabilization of the south shoreline,a test plot for different materials,a wetland boardwalk and interior pathways,installation of native plantings,and site-specific artwork.By 2014,the landscape’s multiple character zones were complete:the established meadow,the connective network of trails and boardwalks,the working site infrastructure of wetlands with swales and seeps,the dynamic intertidal zone,and earthen buttresses.A new pavilion for kayak storage and rentals and an arts and environmental education center in the historic Red Barn were significant additions for the program and community engagement of the park(refer to Figure 1).Over the past summer of 2016,portions of the site originally designed as a LEED platinum eco-hotel and conference center are now being remediated and reconceived as a new civic plaza,amphitheater,overlook west deck,boardwalk at Quiet Harbor,and a shade structure with an area for food trucks.Long Dock Park will continue to adjust and adapt to changing circumstances of ecology,climate change,flooding and sea level rise,and culture.Our original goals of renewing and revealing the historic waterfront,increasing public access to the river,restoring degraded environmental conditions,and demonstrating exemplary,environmentally sensitive development-these are complete.And the park was one of the first pilot projects for the Sustainable-SITES certification program and subsequently received SITES’s highest rating of a SITES project at the time.Even as we considered program,spatial organization,and aesthetics,our work also sought to create in Long Dock a functional and sustainable ecosystem.The park’s design needed to initiate natural processes for the degraded post-industrial brownfield to function and sustain ecosystem services that had not existed before.The design of healthy soils,the integration of hydrology,and the establishment of native plant communities form the true story of the site’s transformation from postindustrial ruin into a significant waterfront park.展开更多
文摘Superfluous Things, written by scholar Wen Zhenheng in the Ming Dynasty, is regarded as the encyclopedia on Chinese ancient landscape architecture and environmental design. It analyzed Chinese traditional garden systematically and comprehensively. This study emphasizes the contemporary value of the principles and methods in Superfluous Things. According to the book, 2 key environmental building principles that can be applied into modern landscape design have been put forward:(1) artificiality should fit with natural conditions;(2) less without reduction. Based on these, a coupling point on the practice and research of building a sustainable and friendly environment has been found, which combines natural resources, human needs, economic benefits and cultural factors.
文摘As computer simulation increasingly supports engine er ing design and manufacture, the requirement for a computer software environment providing an integration platform for computational engineering software increas es. A key component of an integrated environment is the use of computational eng ineering to assist and support solutions for complex design. Computer methods fo r structural, flow and thermal analysis are well developed and have been used in design for many years. Many software packages are now available which provi de an advanced capability. However, they are not designed for modelling of powde r forming processes. This paper describes the powder compaction software (PCS_SU T), which is designed for pre- and post-processing for computational simulatio n of the process compaction of powder. In the PCS_SUT software, the adaptive analysis of transient metal powder forming process is simulated by the finite element method based on deformation theories . The error estimates and adaptive remeshing schemes are applied for updated co -ordinate analysis. A generalized Newmark scheme is used for the time domain di scretization and the final nonlinear equations are solved by a Newton-Raphson p rocedure. An incremental elasto-plastic material model is used to simulate the compaction process. To describe the constitutive model of nonlinear behaviour of powder materials, a combination of Mohr-Coulomb and elliptical yield cap model is applied. This model reflects the yielding, frictional and densification char acteristics of powder along with strain and geometrical hardening which occurs d uring the compaction process. A hardening rule is used to define the dependence of the yield surface on the degree of plastic straining. A plasticity theory for friction is employed in the treatment of the powder-tooling interface. The inv olvement of two different materials, which have contact and relative movement in relation to each other, must be considered. A special formulation for friction modelling is coupled with a material formulation. The interface behaviour betwee n the die and the powder is modelled by using an interface element mesh. In the present paper, we have demonstrated pre- and post-processor finite elem ent software, written in Visual Basic, to generate the graphical model and visua lly display the computed results. The software consist of three main part: · Pre-processor: It is used to create the model, generate an app ropriate finite element grid, apply the appropriate boundary conditions, and vie w the total model. The geometric model can be used to associate the mesh with th e physical attributes such as element properties, material properties, or loads and boundary conditions. · Analysis: It can deal with two-dimensional and axi-symmetric applications for linear and non-linear behaviour of material in static and dyna mic analyses. Both triangular and quadrilateral elements are available in the e lement library, including 3-noded, 6-noded and 7-noded (T6B1) triangles and 4 -noded, 8-noded and 9-noded quadrilaterals. The direct implicit algorithm bas ed on the generalized Newmark scheme is used for the time integration and an aut omatic time step control facility is provided. For non-linear iteration, choice s among fully or modified Newton-Raphson method and quasi-Newton method, using the initial stiffness method, Davidon inverse method or BFGS inverse method, ar e possible. · Post-processor: It provides visualization of the computed resu lts, when the finite element model and analysis have been completed. Post-proce ssing is vital to allow the appropriate interpretation of the completed results of the finite element analysis. It provides the visual means to interpret the va st amounts of computed results generated. Finally, the powder behaviour during the compaction of a multi-level component is numerically simulated by the PCS_SUT software, as shown in Fig.1. The predict ive compaction forces at different displacements are computed and compared with the available experimental
文摘In todays context of advocating mass entrepreneurship and innovation, colleges and universities should always adhere to advanced teaching concepts, actively explore and constantly explore the feasible way of practical teaching reform, promote the improvement of teaching quality, and cultivate high-quality social talents. At present, the practical teaching system in most colleges and universities in China is not perfect and it still follows the traditional teaching mode which violates the growth needs of students and the teaching objectives of the new curriculum. In view of this, this paper takes the innovation and entrepreneurship teaching as the background, explores and studies how to build the practical teaching system of environmental design major and realize the teaching reform as the theme and puts forward the corresponding reform suggestions.
文摘A CAD tools environment is described to support concurrent collaborative design. The environment has four components: shared design representation, design process control, CAD tools, designer interface. Some related issues for the construction, such as form feature handling, constraint satisfaction, design process control, STEP based information integration, are discussed in more detail.
文摘The objective of a bridge design is to produce a safe bridge that is elegant and satisfies all functionality requirements, at a cost that is acceptable to the owner. A successful bridge design must be natural, simple, original, and harmonious with its surroundings. Aesthetics is not an additional consideration in the design of a bridge, but is rather an integral part of bridge design. Both the structural configuration and the aesthetics of a bridge must be considered together during the conceptual design stage. To achieve such a task, the bridge design engineer must have a good understanding of structural theory and bridge aesthetics.
文摘LCM （life cycle management） is a systematic approach, mindset and culture that considers economic, social, and environmental factors among other factors in the decision making process throughout various business or organizational decisions that affect both inputs and outputs of a product or service life cycle. It is a product, process, or activity management system aimed at minimizing environmental and socio-economic burdens associated with an organization＇s product or process during its entire life cycle and value chain. LCM＇s application is gaining wider acceptance both in the corporate and governmental organizations as an approach to reduce ecological footprints and to improve the sustainability of human activities. But where and how can it be used in agricultural engineering applications？ This study highlights the potential areas of LCM application in agricultural and allied sectors and how it can be utilized. The study revealed that LCM tools such as design for environment and life cycle analysis can be used to evaluate the environmental impacts of-and to improve the products, equipment, and structures produced by biosystems engineers as well as the processes used to generate them.
基金National Nature Science Foundation of China(No.60273044)Nature Science Foundation of Anhui Province(No.01042201)
文摘The whole superconducting HT-7U Tokamak is a high-cost and large-scale complicated device. The assembly requirement of HT-7U device is arduous and strict. At present, there have been no guiding principle for the assembly of the device, but assembly simulation can help the engineer plan and make decision by an intuitional and visual way before its actual assembly. The problem is that which scheme is most suitable should be solved primarily. From current research situation and technology progress of assembly simulation, this paper explained and analyzed four kinds of technological schemes of assembly simulation in common use. Finally, we got the most feasible scheme that was suitable for HT-7U assembly simulation by comparing their technological issues and difficult points of simulation among the four kinds of feasible schemes.
基金the Grant-in-Aid for Young Scientists (A) KAKENHI 22686084
文摘A sustainable materials management for metals should be achieved to conserve resources of metal minerals.For the sustainable materials management,material flows through the whole life cycle of materials have been recognized by material flow analysis(MFA) studies.Former MFA studies pointed out that cyclic use of metals could be enhanced not only by increasing quantity of recovered scrap but also by upgrading quality of the scrap.In general,the quality is degraded by contaminants which commingle at disassembling processes.The mixture of contaminants depends on usage of materials in products.Here,Type I ecolabelling has a potential to convey messages for avoiding mixture of contaminants to the producers of finished products.In this study,on the basis of a survey on existing certification criteria related to metals in the world,a general concept of certification criteria on sustainable materials management for metals in Type I ecolabelling system is proposed.Finally,we propose six criteria in the form of certification criteria in Type I ecolabelling system.
文摘The Intemational Concordia explorer telescope （ICE-T） is a f/1.1 Schmidt telescope, 61 cm aperture, with two optical tubes equipped with identical charged coupled devices 10.3× 10.3 k, 9μ pixel size, ultra-wide-fieldwith a total FOV of 65 square degrees. Its aim is to operate at Dome C, the French-Italian Antarctic Station, taking advantage of the long winter night for continuous observations. It is optimized for high precision photometry in two separate filters Sloan g and Sloan i ranging from 100 mmag to 10 mmag （from 9 to16 mag）. Among the scientific tasks there are the detection of hot Jupiters and Super Earths with the transit method, and related magnetic activity of the hosting stars. The 4m Radom dome for ICE-T together with 3 foundation pillars and the cables bundle have been already successfully installed in January 2009.
基金supported by the National Science Council under project No.NSC 99-222-E-251-001
文摘Increasing environmental awareness and stringent environmental regulations have motivated many companies to incorporate ecodesign into product development. To assist companies to address the challenge, this research presents a design for environment （DfE） methodology to evaluate and improve derivative consumer electronic product development using a back-propagation neural network （BPNN） model and a technique for order preference by similarity to ideal solution （TOPSIS） method. Based on use of a BPNN, the life cycle assessment （LCA） models are developed to estimate quantities of hazardous chemical substances and energy consumption for a derivative consumer electronic product throughout the product life cycle. A performance evaluation and improvement model for DfE is then devised based on the TOPSIS method to analyze the ecodesign performance and provide concrete improvement strategies. With the aforementioned analysis of environmental performance, an enterprise can profoundly understand and significantly enhance the relative DfE performance of a new product compared to the similar competitive products. Finally, we apply an optical mouse development project as a case to elaborate and demonstrate the effectiveness of the proposed methodology. These analytical results can let us understand the DfE performance ranking and acquire the maximum reduced quantity of each DfE criterion for each module of a new product. Meanwhile, to enhance the green competitiveness of the new product, we recommend that the engineers should decrease the area of the circuit board of the new product. In addition, the material of the USB cable for the new product should be switched from the PVC material to the PE material.
文摘To solve the optimal power flow(OPF)problem,reinforcement learning(RL)emerges as a promising new approach.However,the RL-OPF literature is strongly divided regarding the exact formulation of the OPF problem as an RL environment.In this work,we collect and implement diverse environment design decisions from the literature regarding training data,observation space,episode definition,and reward function choice.In an experimental analysis,we show the significant impact of these environment design options on RL-OPF training performance.Further,we derive some first recommendations regarding the choice of these design decisions.The created environment framework is fully open-source and can serve as a benchmark for future research in the RL-OPF field.
基金the key research project on the selection and application of the regulated tools [CLS(2011)B13],awarded by the China Law Societythe foundation from the United States Agency of the International Development,awarded by the Vermont Law School
文摘Buildings have contributed to the energy shortage, pollution and global climate change. To promote green buildings is the way access to the sustainable development. Currently, China has issued some regulations and systems to boost the green building. However, problems lie in China and the systems are not effective. USA and EU have rich experiences and fairly sophisticated legislation and policies to develop green building. China may get some lessens from these countries. This paper will make an overview of legal framework and main system of green building in China, then, analyses some important legal systems and typical case related green building in the USA and EU. Further, problems were pointed out in the China based on the comparative analysis of these countries. Lastly, according to the condition in China and lessons from USA and EU, this paper will put some suggests to promote green building, such as, take some measures to enhance the awareness of the stakeholders, create multi- incentive tools and so on.
基金financially supported by student research fund of National Institute of Technology,Tiruchirapalli–620 015, India
文摘Thermoacoustic refrigerator （TAR） converts acoustic waves into heat without any moving parts. The study presented here aims to optimize the parameters like frequency, stack position, stack length, and plate spacing involving in designing TAR using the Response Surface Methodology （RSM）. A mathematical model is developed using the RSM based on the results obtained from DeltaEC software. For desired temperature difference of 40 K, optimized parameters suggested by the RSM are the frequency 254 Hz, stack position 0.108 m, stack length 0.08 m, and plate spacing 0.0005 m. The experiments were conducted with optimized parameters and simulations were performed using the Design Environment for Low-amplitude ThermoAcoustic Energy Conversion （DeltaEC） which showed similar results.
文摘The conceptualization of the HousehoLd/Neighborhood Model for skilled nursing facilities began in 1987 at Evergreen Retirement Community in Oshkosh, WI, USA in the search for the ＂perfect＂ nursing home. Being able to see perfection required being freed from the mental constraints of regulations, reimbursement systems, and existing staff training programs so that visionary thinking was possible. ConceptuaLization was followed by a pilot project to test various aspects of the vision. The result was （1） a management philosophy built on Continuous QuaLity Improvement, （2） a team-based organization structure, （3） cross-functionaL staff roles, （4） sociaL-modeL activity programming, and （5） a residential style physical setting that won strong support from the State of Wisconsin. With this support, we had the opportunity to open in 1997 the first fuLL-scaLe model of a HousehoLd/Neighborhood in the United States based upon providing ＂resident and relationship centered services and care＂. The mode[ was validated through a year-tong evaluative research study. In 2004 we opened a second full-scale model incorporating significant improvements identified through experience. The opportunity to further develop the model has been provided through its adoption in China by China Senior Care, which wiLL open their first facility in 2014.
文摘Scenic Hudson’s Long Dock Park is a resilient living work of art and a vibrant community asset for the Hudson River Valley.A 23-acre peninsula on the east side of the Hudson at Beacon,New York,the site includes the Peter J.Sharp Park and the Klara Sauer Hudson River Trail.Two decades in the making,beginning in 1997,it took a decade to plan and remediate,and,by its completion in early 2017,it will have taken just as long to build and recover.In 1997,nonprofit Scenic Hudson,the largest environmental and land preservation group focused on the Hudson River Valley,started assembling the different ownership parcels of the Long Dock site.From 1999 to 2003,they engaged the Beacon community through a series of community meetings and workshops to articulate its vision for its waterfront and cleanup of the site began.From 2003 to 2007,the design team developed the architectural and site program for the project,restoration measures,and its physical expression with the client.Working with the City and the New York State Department of Environmental Conservation(NYSDEC),the project completed the State Environmental Quality Review Act(SEQR)process,filing a Draft Environmental Impact Statement(DEIS)and received approval of the final EIS ensuring that there was significant environmental,social,or economic value.The NYSDEC and the U.S.Army Corps of Engineers(USACE)were also directly involved in oversight of the brownfield remediation and work within the Hudson River and site wetlands.With the SEQR process complete and approval of a mitigation plan from the USACE,the team worked with the City of Beacon to complete the site plan application process for construction.Our mandate was clear from the start-build resilience,but realize it incrementally.The project’s first phase,opened in 2009,included additional remediation and removal of contaminated soils,removal of invasive species,stabilization of the south shoreline,a test plot for different materials,a wetland boardwalk and interior pathways,installation of native plantings,and site-specific artwork.By 2014,the landscape’s multiple character zones were complete:the established meadow,the connective network of trails and boardwalks,the working site infrastructure of wetlands with swales and seeps,the dynamic intertidal zone,and earthen buttresses.A new pavilion for kayak storage and rentals and an arts and environmental education center in the historic Red Barn were significant additions for the program and community engagement of the park(refer to Figure 1).Over the past summer of 2016,portions of the site originally designed as a LEED platinum eco-hotel and conference center are now being remediated and reconceived as a new civic plaza,amphitheater,overlook west deck,boardwalk at Quiet Harbor,and a shade structure with an area for food trucks.Long Dock Park will continue to adjust and adapt to changing circumstances of ecology,climate change,flooding and sea level rise,and culture.Our original goals of renewing and revealing the historic waterfront,increasing public access to the river,restoring degraded environmental conditions,and demonstrating exemplary,environmentally sensitive development-these are complete.And the park was one of the first pilot projects for the Sustainable-SITES certification program and subsequently received SITES’s highest rating of a SITES project at the time.Even as we considered program,spatial organization,and aesthetics,our work also sought to create in Long Dock a functional and sustainable ecosystem.The park’s design needed to initiate natural processes for the degraded post-industrial brownfield to function and sustain ecosystem services that had not existed before.The design of healthy soils,the integration of hydrology,and the establishment of native plant communities form the true story of the site’s transformation from postindustrial ruin into a significant waterfront park.
