A novel Additive Manufacturing(AM)-driven concurrent design strategy based on the beam characterization model considering strength constraints is proposed.The lattice topology,radius size,Building Orientation(BO),and ...A novel Additive Manufacturing(AM)-driven concurrent design strategy based on the beam characterization model considering strength constraints is proposed.The lattice topology,radius size,Building Orientation(BO),and structural yield strength can be simultaneously adjusted by integrating the overall process-structure-performance relationship of the AM process into the optimization.Specifically,the transverse isotropic material model is adopted to describe the material properties induced by the layer-by-layer manner of additive manufacturing.To bolster lattice strength performance,the stress constraints and ratio constraints of lattice struts are employed.The Tsai-Wu yield criterion is implemented to characterize the lattice strut's strength,while the P-norm method streamlines the handling of multiple constraints,minimizing computational overhead.Moreover,the gradient-based optimization model is established,where both the individual struts diameters and BO can be designed,and the buckling-prone spatial struts are strategically eliminated to improve the lattice strength further.Furthermore,several typical structures are optimized to verify the effectiveness of the proposed method.The optimized results are quite encouraging since the heterogeneous lattice structures with optimized BO obtained by the strength-based concurrent method show a remarkably improved performance compared to traditional designs.展开更多
Natural hazards pose significant threats to different communities and various places around the world.Failing to identify and support the most vulnerable communities is a recipe for disaster. Many studies have propose...Natural hazards pose significant threats to different communities and various places around the world.Failing to identify and support the most vulnerable communities is a recipe for disaster. Many studies have proposed social vulnerability indices for measuring both the sensitivity of a population to natural hazards and its ability to respond and recover from them. Existing techniques,however, have not accounted for the unique strengths that exist within different communities to help minimize disaster loss. This study proposes a more balanced approach referred to as the strength-based social vulnerability index(SSVI). The proposed SSVI technique, which is built on sound sociopsychological theories of how people act during disasters and emergencies, is applied to assess comparatively the social vulnerability of different suburbs in the Wollongong area of New South Wales, Australia. The results highlight suburbs that are highly vulnerable, and demonstrates the usefulness of the technique in improving understanding of hotspots where limited resources should be judiciously allocated to help communities improve preparedness, response, and recovery from natural hazards.展开更多
Background:This study explored the personal recovery of consumers and their caregivers receiving the strength-based family intervention.Method:A three-year project was implemented with 43 dyads from 5 community psychi...Background:This study explored the personal recovery of consumers and their caregivers receiving the strength-based family intervention.Method:A three-year project was implemented with 43 dyads from 5 community psychiatric rehabilitation agencies in northern,central,and Southern Taiwan.This paper presents qualitative analysis with a focus on describing the experiences of personal recovery.To gain a deeper understanding of the participants’personal experiences and perspectives,semi-structured in-depth interviews were conducted on three occasions(six months after the inception of the experiment,18 months after,and when the participants left the services of this study).Over the three occasions,a total of 27 consumers and 28 caregivers were interviewed.Data analysis was conducted based on grounded theory.Results:Consumers expressed positive experiences in the domain of the recovery process(positive sense of self,taking responsibility,and better coping)and on the objective indicators of recovery(functioning,interpersonal interaction,and family relationship).Caregivers experienced lessened psychological burdens.They also revealed improvements to their sense of self(recovery process)and subjective indicators of recovery outcomes,including feeling empowered and having a better quality of life.Moreover,they had better interaction with consumers(objective domain of recovery).Conclusion:These findings suggest that the strength-based perspective is an acceptable,culturally-compatible approach among Chinese mental health consumers and their caregivers.The investigators suggest that additional resources would be necessary to support a change in the service system in Taiwan so that family-based services can be provided to promote the recovery of mental health consumers and their family caregivers.展开更多
基金co-supported by National Key R&D Program of China(No.2022YFB4602003)Key Project of National Natural Science Foundation of China(No.12032018)+2 种基金Guangdong Basic and Applied Basic Research Foundation(No.2022A1515110489)National Natural Science Foundation of China-China Academy of General Technology Joint Fund for Basic Research(No.52375380)National Key Research and Development Program of China(No.2022YFB3402200)。
文摘A novel Additive Manufacturing(AM)-driven concurrent design strategy based on the beam characterization model considering strength constraints is proposed.The lattice topology,radius size,Building Orientation(BO),and structural yield strength can be simultaneously adjusted by integrating the overall process-structure-performance relationship of the AM process into the optimization.Specifically,the transverse isotropic material model is adopted to describe the material properties induced by the layer-by-layer manner of additive manufacturing.To bolster lattice strength performance,the stress constraints and ratio constraints of lattice struts are employed.The Tsai-Wu yield criterion is implemented to characterize the lattice strut's strength,while the P-norm method streamlines the handling of multiple constraints,minimizing computational overhead.Moreover,the gradient-based optimization model is established,where both the individual struts diameters and BO can be designed,and the buckling-prone spatial struts are strategically eliminated to improve the lattice strength further.Furthermore,several typical structures are optimized to verify the effectiveness of the proposed method.The optimized results are quite encouraging since the heterogeneous lattice structures with optimized BO obtained by the strength-based concurrent method show a remarkably improved performance compared to traditional designs.
文摘Natural hazards pose significant threats to different communities and various places around the world.Failing to identify and support the most vulnerable communities is a recipe for disaster. Many studies have proposed social vulnerability indices for measuring both the sensitivity of a population to natural hazards and its ability to respond and recover from them. Existing techniques,however, have not accounted for the unique strengths that exist within different communities to help minimize disaster loss. This study proposes a more balanced approach referred to as the strength-based social vulnerability index(SSVI). The proposed SSVI technique, which is built on sound sociopsychological theories of how people act during disasters and emergencies, is applied to assess comparatively the social vulnerability of different suburbs in the Wollongong area of New South Wales, Australia. The results highlight suburbs that are highly vulnerable, and demonstrates the usefulness of the technique in improving understanding of hotspots where limited resources should be judiciously allocated to help communities improve preparedness, response, and recovery from natural hazards.
文摘Background:This study explored the personal recovery of consumers and their caregivers receiving the strength-based family intervention.Method:A three-year project was implemented with 43 dyads from 5 community psychiatric rehabilitation agencies in northern,central,and Southern Taiwan.This paper presents qualitative analysis with a focus on describing the experiences of personal recovery.To gain a deeper understanding of the participants’personal experiences and perspectives,semi-structured in-depth interviews were conducted on three occasions(six months after the inception of the experiment,18 months after,and when the participants left the services of this study).Over the three occasions,a total of 27 consumers and 28 caregivers were interviewed.Data analysis was conducted based on grounded theory.Results:Consumers expressed positive experiences in the domain of the recovery process(positive sense of self,taking responsibility,and better coping)and on the objective indicators of recovery(functioning,interpersonal interaction,and family relationship).Caregivers experienced lessened psychological burdens.They also revealed improvements to their sense of self(recovery process)and subjective indicators of recovery outcomes,including feeling empowered and having a better quality of life.Moreover,they had better interaction with consumers(objective domain of recovery).Conclusion:These findings suggest that the strength-based perspective is an acceptable,culturally-compatible approach among Chinese mental health consumers and their caregivers.The investigators suggest that additional resources would be necessary to support a change in the service system in Taiwan so that family-based services can be provided to promote the recovery of mental health consumers and their family caregivers.
