The performance of inclined pile group embedded in consolidating soil under surcharge load was investigated by experiment in comparison with vertical pile group and single pile under the same conditions; dragload, dow...The performance of inclined pile group embedded in consolidating soil under surcharge load was investigated by experiment in comparison with vertical pile group and single pile under the same conditions; dragload, downdrag, and layered soil settlement were measured. A three-dimensional numerical model was built via FLAC3D software, and verified by the experimental results. Influence factors, such as consolidation time, pile spacing, and pile tilt angle were analyzed. The results show that dragload of inclined pile group increases with the increase of consolidation time and pile spacing or the decrease of pile tilt angle. Downdrag of inclined pile group increases with the increase of consolidation time, pile spacing and pile tilt angle.展开更多
Since the increasing demand for arable land and low efficient and disordered use of rural residential land,land consolidation for rural settlement has become a hot issue in China.Many Chinese scientists studied the to...Since the increasing demand for arable land and low efficient and disordered use of rural residential land,land consolidation for rural settlement has become a hot issue in China.Many Chinese scientists studied the topic from different angles.However,there is no reference systematically summarizing and discussing feasibility of consolidating rural residential land into arable land.The authors listed and analyzed the calculation methods of consolidating rural residential land into arable land,and discussed the feasibility and reasonability of those methods.Moreover,this paper put forward the study orientation in this regard for providing references for relevant researches.展开更多
As the world economy develops in a globally-oriented way and world trade develops in an incorporate way, upgrading the competitiveness of our export commodities and trading efficiency have become the most important pr...As the world economy develops in a globally-oriented way and world trade develops in an incorporate way, upgrading the competitiveness of our export commodities and trading efficiency have become the most important problems in national economic development. In the 1990s, scientific progress is stimulating the growth of international trade and the revolution in regional structure and product展开更多
The Arab Spring is supposed to be the Arab world’s great changes and turmoil,but Iran has repeatedly become the focus in the following changes.Whether it is in the Syrian civil war,or strikes against ISIS,or the Qata...The Arab Spring is supposed to be the Arab world’s great changes and turmoil,but Iran has repeatedly become the focus in the following changes.Whether it is in the Syrian civil war,or strikes against ISIS,or the Qatar crisis,Iran repeatedly appeared.There are different attitudes towards Iran’s behavior.The Trump administration holds the opinion that Iran is展开更多
At the invitation of the Chinese Association for International Understanding (CAFIU), a 4-member Australian Rotary delegation visited China from April 8-14. As a staff member of CAFIU, I accompanied the delegation’s ...At the invitation of the Chinese Association for International Understanding (CAFIU), a 4-member Australian Rotary delegation visited China from April 8-14. As a staff member of CAFIU, I accompanied the delegation’s whole trip in China.Australian Rotary is the chapter of the Rotary International in Australia; most of its展开更多
In the wake of the inflow of international capital into China’s bicycle industry in the past decade, China’s domestic bicycle market is seeing fiercer competition, with production exceeding sales. The Phoenix Brand ...In the wake of the inflow of international capital into China’s bicycle industry in the past decade, China’s domestic bicycle market is seeing fiercer competition, with production exceeding sales. The Phoenix Brand bicycle, one of China’s ten famous brands, has been maintaining a high market share on the domestic market over the last展开更多
Objective： To observe the clinical efficacy of acupuncture-moxibustion therapy of ＂banking up original qi and consolidating the foundation＂ for prevention and treatment of seasonal allergic rhinitis.Methods： Sixty...Objective： To observe the clinical efficacy of acupuncture-moxibustion therapy of ＂banking up original qi and consolidating the foundation＂ for prevention and treatment of seasonal allergic rhinitis.Methods： Sixty included patients were divided into two groups according to the random number table method with 30 patients in each group. In acupuncture group, warming-needle moxibustion was carried out at Zúsānlǐ（足三里ST 36）, and cone moxibustion on Fùzǐ（附子Radix Aconiti Lateralis Praeparata） cake was conducted at Guānyuán（关元CV 4）, Qìhǎi（气海CV 6） and Dàzhuī（大椎GV 14）. The treatment was conducted in May or June（2 months before the onset of rhinitis in this area）. The treatment was carried out for once every other day and three times per week. Treatment for 24 times was considered as 1 course of treatment. No intervention treatment was conducted in control group. The score of rhinitis symptom, the visual analogue scale（VAS） score changes of total nasal symptom score（TNSS） and total non-nasal symptom score（TNNSS） of patients in 2015 and in 2016 were observed, and the clinical efficacy of the two groups was compared.Results：（1） The score of rhinitis symptom, the VAS score changes of TNSS and TNNSS in acupuncture group in 2016 declined when compared with the results in 2015, which were 4.57 ±0.82 vs 9.40 ± 1.89,13.37 ± 4.01 vs 30.80 ±4.77 and 15.93 ±6.30 vs 46.13 ± 9.79（P〈 0.001）, the results in acupuncture group after treatment were lower than that in control group at same time, which were 4.57 ±0.82 vs 7.53 ±2.06,13.37±4.01 vs 27.17±6.84,15.93±6.30 vs 35.53±11.69（all P〈0.001）. According to comparison, there was no obvious difference in the results in control group at the two time points, which were 8.60 ±2.39 vs7.53 ± 2.06, 29.63 ± 6.30 vs 27.17 ± 6.84 and 40.90 ±12.31 vs 35.53± 11.69（all P〉 0.05）.（2） The total effective rate was 96.7%（29/30） in acupuncture group and 10%（3/30） in control group, and the difference was statistically significant（P〈 0.001）.Conclusion： Acupuncture-moxibustion therapy of ＂banking up original qi and consolidating the foundation＂ was effective on prevention and treatment of seasonal allergic rhinitis.展开更多
In cloud computing, server consolidation is the part where very few persons go through the same. By consolidating the unused server space, memory can be reused for another data allocation. The objective of this paper ...In cloud computing, server consolidation is the part where very few persons go through the same. By consolidating the unused server space, memory can be reused for another data allocation. The objective of this paper is to improve resource utilization. Residual resource fragmentation refers to the state of the data center where sufficient amount of residual resources are available for any new VM allocation. To achieve this, there are three methods followed here. Active physical servers are identified. Then the maximum utilization of the resources is found out. Finally the resources are allocated and scheduled using the developed algorithm. In this work, we have proposed a new algorithm enhanced cloud consolidating algorithm. This algorithm improves some of the qualities of the cloud consolidating algorithm. Here the allocation technique is based on the cost and the memory.展开更多
Experiments on consolidating process and mechanism of internal loose structures in heavy ingots are studied by taking stretching technology as example Considering various detecting indexes,the equivalent relationship...Experiments on consolidating process and mechanism of internal loose structures in heavy ingots are studied by taking stretching technology as example Considering various detecting indexes,the equivalent relationships of forging ratios which are required by different forging processes with parameters are gotten.Effective experimental methods and basis can be provided for the studying the of forging heavy ingots展开更多
The enduring vitality of Chinese civilization springs from the wisdom of consolidating foundations while embracing innovation and from a spirit of openness and inclusiveness.This is what has enabled the Chinese people...The enduring vitality of Chinese civilization springs from the wisdom of consolidating foundations while embracing innovation and from a spirit of openness and inclusiveness.This is what has enabled the Chinese people to hold fast to our cultural roots while continuously forging new paths,and to maintain our cultural identity while drawing nourishment from exchanges and mutual learning with others.展开更多
Buses are the most critical part of urban-rural transit systems.However,bus transit services in urban-rural areas face a trade-offbetween the need for better services and the low profitability resulting from low trave...Buses are the most critical part of urban-rural transit systems.However,bus transit services in urban-rural areas face a trade-offbetween the need for better services and the low profitability resulting from low travel demand.In this study,we show that we can improve the utilization and profitability of urban-rural buses by merging freight transportation with passenger transportation.We developed a mixed-integer program to model and analyze the coordination between freight and passenger transportation in an urban-rural transit system.We then conducted a case study to evaluate the effectiveness of the proposed approach.The numerical results indicate that the consolidation of passenger and freight transportation significantly reduces the operation cost of logistics companies and improves the profit of bus companies.We finally discuss the consolidation’s positive impacts on logistics companies,bus service providers,and society.展开更多
Chronic pulmonary heart disease is a common and frequently occurring condition in the respiratory system.Professor Wei Gunzheng advocates a treatment approach that integrates disease management with syndrome different...Chronic pulmonary heart disease is a common and frequently occurring condition in the respiratory system.Professor Wei Gunzheng advocates a treatment approach that integrates disease management with syndrome differentiation,combining methods to eliminate pathogenic factors and reinforce healthy qi.During acute episodes,the focus should be on expelling pathogenic excess while simultaneously consolidating the root and supporting healthy qi.During remission,the priority shifts to reinforcing the body's vital energy.For effective treatment,it is essential to both tonify deficiency and purge excess,ensuring the elimination of pathogenic factors and the restoration of healthy qi.展开更多
Objective:This review aimed to identify the barriers and facilitators to equitable coronavirus disease 2019(COVID-19)vaccine distribution in Nigeria using the consolidated framework for implementation research(CFIR).M...Objective:This review aimed to identify the barriers and facilitators to equitable coronavirus disease 2019(COVID-19)vaccine distribution in Nigeria using the consolidated framework for implementation research(CFIR).Methods:A comprehensive search strategy was applied across five databases—Web of Science,MEDLINE,EMBASE,CAB Direct,and CINAHL.The search,conducted as part of a scoping review,yielded 2,751 citations.Seven studies met the inclusion criteria after screening.Data were extracted and analyzed using CFIR constructs to identify key barriers and facilitators to equitable vaccine distribution.Results:Six barriers were identified:limited physical and socioeconomic access,bribery,nepotism,and insufficient availability of translated information.Facilitators included community involvement as local monitoring agents,unannounced staff inspections,healthcare worker training tailored to community needs,and localized outreach strategies such as jingles and call-in programs.CFIR constructs,including Local Conditions,Tailoring Strategies,Available Resources,and Physical Infrastructure,provided a framework for analyzing the findings.Conclusion:This review highlights significant barriers and promising facilitators to equitable vaccine distribution in Nigeria.Targeted interventions,such as community engagement,anti-corruption measures,and culturally tailored strategies,are critical to addressing these challenges and improving access.These findings underscore the need for localized,equity-focused approaches to enhance vaccine distribution systems in Nigeria and other low-resource settings.展开更多
1 Introduction In highway construction,flled embankments are trapezoidal,and the ground is always improved by sand wells or columns.During embankment construction,because the width and height of the embankment are cha...1 Introduction In highway construction,flled embankments are trapezoidal,and the ground is always improved by sand wells or columns.During embankment construction,because the width and height of the embankment are changing,a non-uniform load that varies with time and lateral location is applied to the underlying ground.The consolidation phenomenon under two-dimensional(2D)conditions will keep pace with the construction of the embankment.In addition,because of evaporation and rainfall,the soils are mostly unsaturated.Therefore,it is meaningful to research the consolidation properties of unsaturated ground under non-uniform loading.展开更多
The application of ecosystem services(ES)theories in land consolidation is a confusing issue that has long plagued scholars and government officials.As the upgraded version of traditional land consolidation,comprehens...The application of ecosystem services(ES)theories in land consolidation is a confusing issue that has long plagued scholars and government officials.As the upgraded version of traditional land consolidation,comprehensive land consolidation(CLC)emphasizes ecological benefits,but it does not achieve the expected effect during the pilot phase.This study first proposed a theoretical analysis framework based on ES knowledge to answer the three key questions of why,where,and how to implement CLC better.Taking mountainous counties as the study area,we found that ES trade-offs/synergies,bundles,and drivers were significantly affected by scale effects.ES knowledge can play a crucial role in designing multi-scale CLC strategies regarding the objective,zoning,intensity,and mode.Specifically,mitigating the significant trade-offs between recreational opportunities,food production,and other ES is the top priority of CLC.Land consolidation zoning based on the ES bundles analysis is more rational and can provide the scientific premise for designing locally adapted CLC measures.Land consolidation can be classified into high-intensity direct intervention and low-intensity indirect intervention modes,based on the major drivers of ES.These findings help narrow the gap between ES and CLC practices.展开更多
Memory is a cognitive process through which past experiences are encoded,stored,and retrieved,playing a crucial role in intelligent behavior.It is well established that the hippocampus continues to reactivate memories...Memory is a cognitive process through which past experiences are encoded,stored,and retrieved,playing a crucial role in intelligent behavior.It is well established that the hippocampus continues to reactivate memories for several days after learning,and this process primarily occurs during sleep[1,2].The prevailing view suggests that sharp-wave ripples(SWRs)during non-rapid eye movement(NREM)sleep serve as key electrophysiological signatures of memory replay[3,4].However,only a small portion of SWRs contain memory replay[5].The direct relationship among SWRs,memory replay,and memory consolidation remains an open question.Another unresolved issue is how the hippocampus simultaneously reactivates both new and old memories while preventing interference.展开更多
Memory enables organisms to encode,store,and retrieve information essential for interacting with and adapting to a dynamic environment.As an internal representation of the external world,memory serves as a crucial bri...Memory enables organisms to encode,store,and retrieve information essential for interacting with and adapting to a dynamic environment.As an internal representation of the external world,memory serves as a crucial bridge between past experiences and future behaviors.However,the brain continuously forms new memories,raising the question of how new memories are integrated without disrupting previously formed ones.展开更多
Low-intensity ultrasound was applied to the pressureless consolidation of AlSi10Mg powders in a broad temperature range from 600 to 860℃.Under static conditions,the consolidation of AlSi10Mg powders can only be achie...Low-intensity ultrasound was applied to the pressureless consolidation of AlSi10Mg powders in a broad temperature range from 600 to 860℃.Under static conditions,the consolidation of AlSi10Mg powders can only be achieved at 860℃,but still with the presence of some residual unconsolidated regions.The introduction of low-intensity ultrasound at this temperature eliminates the unconsolidated regions and transforms the columnar grains observed in original directional solidification into equiaxed or globular grains.Remarkably,the application of low-intensity ultrasound significantly reduces the consolidation temperature to 620℃,without compromising the microhardness of the resulting samples when compared to static conditions.Furthermore,by lowering the temperature to 600℃,a well-sintered porous material is obtained through the assistance of the low-intensity ultrasound.展开更多
Based on the energy dissipation caused by consolidation deformation of the porous media under external force and migration of the internal suspended substances,a coupled multiphase-substance flow(CMF)model was establi...Based on the energy dissipation caused by consolidation deformation of the porous media under external force and migration of the internal suspended substances,a coupled multiphase-substance flow(CMF)model was established.This model introduced the new concepts,such as particle temperature and particle entropy,to describe energy dissipation at meso-level.This model used a potential energy density function and migration coefficients to establish the corresponding connection between the dissipative force and dissipative flow.This viewpoint unifies the deformation,seepage,and suspended substance migration of geotechnical materials under the framework of granular thermodynamics.It can reflect the evolution of effective stress in the solid matrix of multi-components in a particle-reorganized state,and considers the temperature driving effect.The proposed CMF model is validated using the experimental results under coupled migration of heavy metal ions(HMs)and suspended particles(SPs).The calculation results demonstrated that the CMF model can describe the flow process under the conditions of arbitrary changes in different suspended substance types,injection concentrations,and injection velocities.展开更多
We study a novel replication mechanism to ensure service continuity against multiple simultaneous server failures.In this mechanism,each item represents a computing task and is replicated intoξ+1 servers for some int...We study a novel replication mechanism to ensure service continuity against multiple simultaneous server failures.In this mechanism,each item represents a computing task and is replicated intoξ+1 servers for some integerξ≥1,with workloads specified by the amount of required resources.If one or more servers fail,the affected workloads can be redirected to other servers that host replicas associated with the same item,such that the service is not interrupted by the failure of up toξservers.This requires that any feasible assignment algorithm must reserve some capacity in each server to accommodate the workload redirected from potential failed servers without overloading,and determining the optimal method for reserving capacity becomes a key issue.Unlike existing algorithms that assume that no two servers share replicas of more than one item,we first formulate capacity reservation for a general arbitrary scenario.Due to the combinatorial nature of this problem,finding the optimal solution is difficult.To this end,we propose a Generalized and Simple Calculating Reserved Capacity(GSCRC)algorithm,with a time complexity only related to the number of items packed in the server.In conjunction with GSCRC,we propose a robust replica packing algorithm with capacity optimization(RobustPack),which aims to minimize the number of servers hosting replicas and tolerate multiple server failures.Through theoretical analysis and experimental evaluations,we show that the RobustPack algorithm can achieve better performance.展开更多
基金Supported by National Natural Science Foundation of China (No. 51008116)State Key Laboratory of Coastal and Offshore Engineering (No. LP1014)+1 种基金Fundamental Research Funds for the Central Universities (No. 2009B14514)China Postdoctoral Science Foundation (No. 20090461062)
文摘The performance of inclined pile group embedded in consolidating soil under surcharge load was investigated by experiment in comparison with vertical pile group and single pile under the same conditions; dragload, downdrag, and layered soil settlement were measured. A three-dimensional numerical model was built via FLAC3D software, and verified by the experimental results. Influence factors, such as consolidation time, pile spacing, and pile tilt angle were analyzed. The results show that dragload of inclined pile group increases with the increase of consolidation time and pile spacing or the decrease of pile tilt angle. Downdrag of inclined pile group increases with the increase of consolidation time, pile spacing and pile tilt angle.
基金Supported by the Foundation of Key Laboratory of Resources Remote Sensing and Digital Agriculture of Chinese Ministry of Agriculture (RDA0910)the Commonweal Foundation of China's National Academy(200990124)+1 种基金Major Program of National Natural Science Foundation of China(40930101)National Key Technologies R & D Program of China(2006BAC08B0404)~~
文摘Since the increasing demand for arable land and low efficient and disordered use of rural residential land,land consolidation for rural settlement has become a hot issue in China.Many Chinese scientists studied the topic from different angles.However,there is no reference systematically summarizing and discussing feasibility of consolidating rural residential land into arable land.The authors listed and analyzed the calculation methods of consolidating rural residential land into arable land,and discussed the feasibility and reasonability of those methods.Moreover,this paper put forward the study orientation in this regard for providing references for relevant researches.
文摘As the world economy develops in a globally-oriented way and world trade develops in an incorporate way, upgrading the competitiveness of our export commodities and trading efficiency have become the most important problems in national economic development. In the 1990s, scientific progress is stimulating the growth of international trade and the revolution in regional structure and product
文摘The Arab Spring is supposed to be the Arab world’s great changes and turmoil,but Iran has repeatedly become the focus in the following changes.Whether it is in the Syrian civil war,or strikes against ISIS,or the Qatar crisis,Iran repeatedly appeared.There are different attitudes towards Iran’s behavior.The Trump administration holds the opinion that Iran is
文摘At the invitation of the Chinese Association for International Understanding (CAFIU), a 4-member Australian Rotary delegation visited China from April 8-14. As a staff member of CAFIU, I accompanied the delegation’s whole trip in China.Australian Rotary is the chapter of the Rotary International in Australia; most of its
文摘In the wake of the inflow of international capital into China’s bicycle industry in the past decade, China’s domestic bicycle market is seeing fiercer competition, with production exceeding sales. The Phoenix Brand bicycle, one of China’s ten famous brands, has been maintaining a high market share on the domestic market over the last
基金Supported by Baotou Medical Science and Technology Project:Wsjj2015060~~
文摘Objective： To observe the clinical efficacy of acupuncture-moxibustion therapy of ＂banking up original qi and consolidating the foundation＂ for prevention and treatment of seasonal allergic rhinitis.Methods： Sixty included patients were divided into two groups according to the random number table method with 30 patients in each group. In acupuncture group, warming-needle moxibustion was carried out at Zúsānlǐ（足三里ST 36）, and cone moxibustion on Fùzǐ（附子Radix Aconiti Lateralis Praeparata） cake was conducted at Guānyuán（关元CV 4）, Qìhǎi（气海CV 6） and Dàzhuī（大椎GV 14）. The treatment was conducted in May or June（2 months before the onset of rhinitis in this area）. The treatment was carried out for once every other day and three times per week. Treatment for 24 times was considered as 1 course of treatment. No intervention treatment was conducted in control group. The score of rhinitis symptom, the visual analogue scale（VAS） score changes of total nasal symptom score（TNSS） and total non-nasal symptom score（TNNSS） of patients in 2015 and in 2016 were observed, and the clinical efficacy of the two groups was compared.Results：（1） The score of rhinitis symptom, the VAS score changes of TNSS and TNNSS in acupuncture group in 2016 declined when compared with the results in 2015, which were 4.57 ±0.82 vs 9.40 ± 1.89,13.37 ± 4.01 vs 30.80 ±4.77 and 15.93 ±6.30 vs 46.13 ± 9.79（P〈 0.001）, the results in acupuncture group after treatment were lower than that in control group at same time, which were 4.57 ±0.82 vs 7.53 ±2.06,13.37±4.01 vs 27.17±6.84,15.93±6.30 vs 35.53±11.69（all P〈0.001）. According to comparison, there was no obvious difference in the results in control group at the two time points, which were 8.60 ±2.39 vs7.53 ± 2.06, 29.63 ± 6.30 vs 27.17 ± 6.84 and 40.90 ±12.31 vs 35.53± 11.69（all P〉 0.05）.（2） The total effective rate was 96.7%（29/30） in acupuncture group and 10%（3/30） in control group, and the difference was statistically significant（P〈 0.001）.Conclusion： Acupuncture-moxibustion therapy of ＂banking up original qi and consolidating the foundation＂ was effective on prevention and treatment of seasonal allergic rhinitis.
文摘In cloud computing, server consolidation is the part where very few persons go through the same. By consolidating the unused server space, memory can be reused for another data allocation. The objective of this paper is to improve resource utilization. Residual resource fragmentation refers to the state of the data center where sufficient amount of residual resources are available for any new VM allocation. To achieve this, there are three methods followed here. Active physical servers are identified. Then the maximum utilization of the resources is found out. Finally the resources are allocated and scheduled using the developed algorithm. In this work, we have proposed a new algorithm enhanced cloud consolidating algorithm. This algorithm improves some of the qualities of the cloud consolidating algorithm. Here the allocation technique is based on the cost and the memory.
文摘Experiments on consolidating process and mechanism of internal loose structures in heavy ingots are studied by taking stretching technology as example Considering various detecting indexes,the equivalent relationships of forging ratios which are required by different forging processes with parameters are gotten.Effective experimental methods and basis can be provided for the studying the of forging heavy ingots
文摘The enduring vitality of Chinese civilization springs from the wisdom of consolidating foundations while embracing innovation and from a spirit of openness and inclusiveness.This is what has enabled the Chinese people to hold fast to our cultural roots while continuously forging new paths,and to maintain our cultural identity while drawing nourishment from exchanges and mutual learning with others.
文摘Buses are the most critical part of urban-rural transit systems.However,bus transit services in urban-rural areas face a trade-offbetween the need for better services and the low profitability resulting from low travel demand.In this study,we show that we can improve the utilization and profitability of urban-rural buses by merging freight transportation with passenger transportation.We developed a mixed-integer program to model and analyze the coordination between freight and passenger transportation in an urban-rural transit system.We then conducted a case study to evaluate the effectiveness of the proposed approach.The numerical results indicate that the consolidation of passenger and freight transportation significantly reduces the operation cost of logistics companies and improves the profit of bus companies.We finally discuss the consolidation’s positive impacts on logistics companies,bus service providers,and society.
文摘Chronic pulmonary heart disease is a common and frequently occurring condition in the respiratory system.Professor Wei Gunzheng advocates a treatment approach that integrates disease management with syndrome differentiation,combining methods to eliminate pathogenic factors and reinforce healthy qi.During acute episodes,the focus should be on expelling pathogenic excess while simultaneously consolidating the root and supporting healthy qi.During remission,the priority shifts to reinforcing the body's vital energy.For effective treatment,it is essential to both tonify deficiency and purge excess,ensuring the elimination of pathogenic factors and the restoration of healthy qi.
文摘Objective:This review aimed to identify the barriers and facilitators to equitable coronavirus disease 2019(COVID-19)vaccine distribution in Nigeria using the consolidated framework for implementation research(CFIR).Methods:A comprehensive search strategy was applied across five databases—Web of Science,MEDLINE,EMBASE,CAB Direct,and CINAHL.The search,conducted as part of a scoping review,yielded 2,751 citations.Seven studies met the inclusion criteria after screening.Data were extracted and analyzed using CFIR constructs to identify key barriers and facilitators to equitable vaccine distribution.Results:Six barriers were identified:limited physical and socioeconomic access,bribery,nepotism,and insufficient availability of translated information.Facilitators included community involvement as local monitoring agents,unannounced staff inspections,healthcare worker training tailored to community needs,and localized outreach strategies such as jingles and call-in programs.CFIR constructs,including Local Conditions,Tailoring Strategies,Available Resources,and Physical Infrastructure,provided a framework for analyzing the findings.Conclusion:This review highlights significant barriers and promising facilitators to equitable vaccine distribution in Nigeria.Targeted interventions,such as community engagement,anti-corruption measures,and culturally tailored strategies,are critical to addressing these challenges and improving access.These findings underscore the need for localized,equity-focused approaches to enhance vaccine distribution systems in Nigeria and other low-resource settings.
基金supported by the National Nature Science Foundation of China(No.12172211)the National Key Research and Development Program of China(No.2019YFC1509800)。
文摘1 Introduction In highway construction,flled embankments are trapezoidal,and the ground is always improved by sand wells or columns.During embankment construction,because the width and height of the embankment are changing,a non-uniform load that varies with time and lateral location is applied to the underlying ground.The consolidation phenomenon under two-dimensional(2D)conditions will keep pace with the construction of the embankment.In addition,because of evaporation and rainfall,the soils are mostly unsaturated.Therefore,it is meaningful to research the consolidation properties of unsaturated ground under non-uniform loading.
基金National Natural Science Foundation of China,No.42171255,No.41971216。
文摘The application of ecosystem services(ES)theories in land consolidation is a confusing issue that has long plagued scholars and government officials.As the upgraded version of traditional land consolidation,comprehensive land consolidation(CLC)emphasizes ecological benefits,but it does not achieve the expected effect during the pilot phase.This study first proposed a theoretical analysis framework based on ES knowledge to answer the three key questions of why,where,and how to implement CLC better.Taking mountainous counties as the study area,we found that ES trade-offs/synergies,bundles,and drivers were significantly affected by scale effects.ES knowledge can play a crucial role in designing multi-scale CLC strategies regarding the objective,zoning,intensity,and mode.Specifically,mitigating the significant trade-offs between recreational opportunities,food production,and other ES is the top priority of CLC.Land consolidation zoning based on the ES bundles analysis is more rational and can provide the scientific premise for designing locally adapted CLC measures.Land consolidation can be classified into high-intensity direct intervention and low-intensity indirect intervention modes,based on the major drivers of ES.These findings help narrow the gap between ES and CLC practices.
基金supported by the National Natural Science Foundation of China(32371028,32300822,U24A20373,and 82071177)the Shanghai Rising-Star Program(24QA2704800)+2 种基金the Shanghai Jiao Tong University 2030 InitiativeShanghai Municipal Health Commission(202340046)the Fund for Excellent Young Scholars of Shanghai Ninth People's Hospital,Shanghai Jiao Tong University School of Medicine.
文摘Memory is a cognitive process through which past experiences are encoded,stored,and retrieved,playing a crucial role in intelligent behavior.It is well established that the hippocampus continues to reactivate memories for several days after learning,and this process primarily occurs during sleep[1,2].The prevailing view suggests that sharp-wave ripples(SWRs)during non-rapid eye movement(NREM)sleep serve as key electrophysiological signatures of memory replay[3,4].However,only a small portion of SWRs contain memory replay[5].The direct relationship among SWRs,memory replay,and memory consolidation remains an open question.Another unresolved issue is how the hippocampus simultaneously reactivates both new and old memories while preventing interference.
文摘Memory enables organisms to encode,store,and retrieve information essential for interacting with and adapting to a dynamic environment.As an internal representation of the external world,memory serves as a crucial bridge between past experiences and future behaviors.However,the brain continuously forms new memories,raising the question of how new memories are integrated without disrupting previously formed ones.
基金National Natural Science Foundation of China(Nos.52101051,52130405,51872241,52101142)Key Research Plan of Shaanxi Province,China(No.2020ZDLGY13-03)+1 种基金Key Research and Development Program of Shaanxi Province,China(No.2023-YBGY-439)Fundamental Research Funds for the Central Universities,China(No.5000210653)。
文摘Low-intensity ultrasound was applied to the pressureless consolidation of AlSi10Mg powders in a broad temperature range from 600 to 860℃.Under static conditions,the consolidation of AlSi10Mg powders can only be achieved at 860℃,but still with the presence of some residual unconsolidated regions.The introduction of low-intensity ultrasound at this temperature eliminates the unconsolidated regions and transforms the columnar grains observed in original directional solidification into equiaxed or globular grains.Remarkably,the application of low-intensity ultrasound significantly reduces the consolidation temperature to 620℃,without compromising the microhardness of the resulting samples when compared to static conditions.Furthermore,by lowering the temperature to 600℃,a well-sintered porous material is obtained through the assistance of the low-intensity ultrasound.
基金supported by the National Natural Science Foundation of China(Grant Nos.52378321 and 52079003).
文摘Based on the energy dissipation caused by consolidation deformation of the porous media under external force and migration of the internal suspended substances,a coupled multiphase-substance flow(CMF)model was established.This model introduced the new concepts,such as particle temperature and particle entropy,to describe energy dissipation at meso-level.This model used a potential energy density function and migration coefficients to establish the corresponding connection between the dissipative force and dissipative flow.This viewpoint unifies the deformation,seepage,and suspended substance migration of geotechnical materials under the framework of granular thermodynamics.It can reflect the evolution of effective stress in the solid matrix of multi-components in a particle-reorganized state,and considers the temperature driving effect.The proposed CMF model is validated using the experimental results under coupled migration of heavy metal ions(HMs)and suspended particles(SPs).The calculation results demonstrated that the CMF model can describe the flow process under the conditions of arbitrary changes in different suspended substance types,injection concentrations,and injection velocities.
基金supported in part by the National Key R&D Program of China under No.2023YFB2703800the National Science Foundation of China under Grants U22B2027,62172297,62102262,61902276 and 62272311+3 种基金Tianjin Intelligent Manufacturing Special Fund Project under Grants 20211097the China Guangxi Science and Technology Plan Project(Guangxi Science and Technology Base and Talent Special Project)under Grant AD23026096(Application Number 2022AC20001)Henan Provincial Natural Science Foundation of China under Grant 622RC616CCF-Nsfocus Kunpeng Fund Project under Grants CCF-NSFOCUS202207。
文摘We study a novel replication mechanism to ensure service continuity against multiple simultaneous server failures.In this mechanism,each item represents a computing task and is replicated intoξ+1 servers for some integerξ≥1,with workloads specified by the amount of required resources.If one or more servers fail,the affected workloads can be redirected to other servers that host replicas associated with the same item,such that the service is not interrupted by the failure of up toξservers.This requires that any feasible assignment algorithm must reserve some capacity in each server to accommodate the workload redirected from potential failed servers without overloading,and determining the optimal method for reserving capacity becomes a key issue.Unlike existing algorithms that assume that no two servers share replicas of more than one item,we first formulate capacity reservation for a general arbitrary scenario.Due to the combinatorial nature of this problem,finding the optimal solution is difficult.To this end,we propose a Generalized and Simple Calculating Reserved Capacity(GSCRC)algorithm,with a time complexity only related to the number of items packed in the server.In conjunction with GSCRC,we propose a robust replica packing algorithm with capacity optimization(RobustPack),which aims to minimize the number of servers hosting replicas and tolerate multiple server failures.Through theoretical analysis and experimental evaluations,we show that the RobustPack algorithm can achieve better performance.
