The proton exchange membrane fuel cell(PEMFC)and the hydrogen hybrid power system are studied by the fuzzy-PID(FPID)controlmethod and the fuzzy-PID controlmethod by Artificial Bee Colony algorithm(ABCFPID),respectivel...The proton exchange membrane fuel cell(PEMFC)and the hydrogen hybrid power system are studied by the fuzzy-PID(FPID)controlmethod and the fuzzy-PID controlmethod by Artificial Bee Colony algorithm(ABCFPID),respectively.The results reveal that compared with the FPID control method,the temperature overshoot of the PEMFC stack under the ABC-FPID control method is decreased by 0.6%.Moreover,the circulating water flow rate within the full operating envelope(about 3 min)is reduced by 19.46 L,which means the ABC-FPID control method is more effective in regulating the stack temperature.Then,the ABC-FPID control method is proposed to study the hydrogen hybrid power system,and the system output power matching,operating characteristic curve of the fuel cell,state of charge(SOC)of the lithium battery,system efficiency and hydrogen demand are obtained.The results indicate that the maximum system efficiency reaches 46.3%,the average system efficiency is 33.8%,and the average hydrogen demand is 0.192 kg/s.Overall,the ABC-FPID control method can efficiently ensure the stability of the fuel cell’s output power,and actively prompt the lithium battery to fulfill the function of“peak shaving and valley filling”under variable load power conditions.展开更多
The China-Laos Railway(CLR),connecting two nations,has created a new paradigm for international cooperation on border management.On September 4,2025,China and Laos signed an intergovernmental agreement on"juxtapo...The China-Laos Railway(CLR),connecting two nations,has created a new paradigm for international cooperation on border management.On September 4,2025,China and Laos signed an intergovernmental agreement on"juxtaposed border control"arrangements for the CLR,the first such agreement between China and a neighboring country.展开更多
A composite anti-disturbance predictive control strategy employing a Multi-dimensional Taylor Network(MTN)is presented for unmanned systems subject to time-delay and multi-source disturbances.First,the multi-source di...A composite anti-disturbance predictive control strategy employing a Multi-dimensional Taylor Network(MTN)is presented for unmanned systems subject to time-delay and multi-source disturbances.First,the multi-source disturbances are addressed according to their specific characteristics as follows:(A)an MTN data-driven model,which is used for uncertainty description,is designed accompanied with the mechanism model to represent the unmanned systems;(B)an adaptive MTN filter is used to remove the influence of the internal disturbance;(C)an MTN disturbance observer is constructed to estimate and compensate for the influence of the external disturbance;(D)the Extended Kalman Filter(EKF)algorithm is utilized as the learning mechanism for MTNs.Second,to address the time-delay effect,a recursiveτstep-ahead MTN predictive model is designed utilizing recursive technology,aiming to mitigate the impact of time-delay,and the EKF algorithm is employed as its learning mechanism.Then,the MTN predictive control law is designed based on the quadratic performance index.By implementing the proposed composite controller to unmanned systems,simultaneous feedforward compensation and feedback suppression to the multi-source disturbances are conducted.Finally,the convergence of the MTN and the stability of the closed-loop system are established utilizing the Lyapunov theorem.Two exemplary applications of unmanned systems involving unmanned vehicle and rigid spacecraft are presented to validate the effectiveness of the proposed approach.展开更多
BACKGROUND Inadequate glycemic control in patients with type 2 diabetes(T2DM)is a major public health problem and a significant risk factor for the progression of diabetic complications.AIM To evaluate the effects of ...BACKGROUND Inadequate glycemic control in patients with type 2 diabetes(T2DM)is a major public health problem and a significant risk factor for the progression of diabetic complications.AIM To evaluate the effects of intensive and supportive glycemic management strategies over a 12-month period in individuals with T2DM with glycated hemoglobin(HbA1c)≥10%and varying backgrounds of glycemic control.METHODS This prospective observational study investigated glycemic control in patients with poorly controlled T2DM over 12 months.Participants were categorized into four groups based on prior glycemic history:Newly diagnosed,previously well controlled with recent worsening,previously off-target but now worsening,and HbA1c consistently above 10%.HbA1c levels were monitored quarterly,and patients received medical,educational,and dietary support as needed.The analysis focused on the success rates of good glycemic control and the associated factors within each group.RESULTS The study showed significant improvements in HbA1c levels in all participants.The most significant improvement was observed in individuals newly diagnosed with diabetes:65%achieved an HbA1c target of≤7%.The results varied between participants with different glycemic control histories,followed by decreasing success rates:39%in participants with previously good glycemic control,21%in participants whose glycemic control had deteriorated compared to before,and only 10%in participants with persistently poor control,with mean HbA1c levels of 6.3%,7.7%,8.2%,and 9.7%,respectively.After one year,65.2%of the“newly diagnosed patients”,39.3%in the“previously controlled group”,21.9%in the“previously off-target but now worsened'”group and 10%in the“poorly controlled from the start”group had achieved HbA1c levels of 7 and below.CONCLUSION In poorly controlled diabetes,the rate at which treatment goals are achieved is associated with the glycemic background characteristics,emphasizing the need for tailored strategies.Therefore,different and comprehensive treatment approaches are needed for patients with persistent uncontrolled diabetes.展开更多
Against the backdrop of the increasingly complex construction market environment,the whole-process cost management of agency-built projects faces issues such as cost overruns and insufficient management efficiency due...Against the backdrop of the increasingly complex construction market environment,the whole-process cost management of agency-built projects faces issues such as cost overruns and insufficient management efficiency due to the numerous stages and high technical requirements involved.This paper focuses on the key stages of whole-process cost management in agency-built projects,including project initiation,design,construction,and completion.It proposes strategies to optimize the cost management process and enhance management efficiency,providing theoretical support and practical guidance for the whole-process cost management under the agency-built model.展开更多
With intensifying market competition and growing financial complexity,strengthening risk control in corporate capital investment management has become imperative.This paper examines the critical role of risk managemen...With intensifying market competition and growing financial complexity,strengthening risk control in corporate capital investment management has become imperative.This paper examines the critical role of risk management in ensuring financial stability,optimizing resource allocation,and achieving strategic objectives.It identifies key risk categories including market volatility,liquidity challenges,operational risks,and strategic misalignment,while proposing targeted strategies such as dynamic monitoring,strategic planning,decision-making optimization,and focused risk management.展开更多
Relevant documents issued by the General Office of the State Council and the Ministry of Health require hospitals to reduce operating costs and improve efficiency,which will place newer and higher demands on medical e...Relevant documents issued by the General Office of the State Council and the Ministry of Health require hospitals to reduce operating costs and improve efficiency,which will place newer and higher demands on medical equipment management.However,the current process of medical equipment quality control in hospitals faces issues such as weak control awareness,untimely maintenance of faulty equipment,and a lack of informatization management tools.These problems severely restrict the development of medical equipment quality management.To address these issues,this article uses a tertiary hospital in Urumqi as an experimental platform to analyze the deficiencies in the current medical equipment quality control management system of public hospitals.Based on practical needs such as equipment procurement,contract management,and equipment management,the research is conducted from three aspects:system architecture,functional design,and talent training,utilizing an information management system.Suggestions are provided,aiming to make a modest contribution to promoting medical equipment quality control management in China.展开更多
The complexity of real estate construction project management is highlighted,and this paper deeply discusses its technology and risk control strategy.Analyze the application field of technology and the construction of...The complexity of real estate construction project management is highlighted,and this paper deeply discusses its technology and risk control strategy.Analyze the application field of technology and the construction of risk management system,and verify the effectiveness of the strategy through cases.The is concluded that the integration of technology management and risk control is the core path to improve the efficiency of the project,and it points out that the application of intelligent tools should be strengthened and explore the new management mode under the dual-carbon goal.展开更多
Real estate construction management faces technological innovation and risk-control challenges.Digital,intelligent,and green construction technologies are driving management transformation.This paper explores innovati...Real estate construction management faces technological innovation and risk-control challenges.Digital,intelligent,and green construction technologies are driving management transformation.This paper explores innovation paths like BIM,IoT,AI robots,and eco-friendly materials,analyzes risk characteristics,and proposes strategies such as a full-process risk management framework,technology verification,standardization,and data security systems.It also discusses the supporting role of government regulation,industry standards,corporate governance,and personnel training,aiming to provide theoretical and practical guidance for modernizing real estate construction management.展开更多
The increasing accumulation of space debris threatens the integrity and functionality of satellites and complicates orbital operations.This paper constructs an advanced rigid-flexible coupling dynamic model for tether...The increasing accumulation of space debris threatens the integrity and functionality of satellites and complicates orbital operations.This paper constructs an advanced rigid-flexible coupling dynamic model for tethered satellite systems,tailored to enhance space debris management.Utilizing the nodal position finite element method,the model significantly improves the precision of simulating tether dynamics and captures the complex interactions involving satellite and debris attitude dynamics.This advancement allows for detailed examination of potential tether entanglements and provides crucial data for optimizing deorbiting processes.To overcome the limitations of conventional control techniques,a robust adaptive sliding mode control strategy is developed.This approach is specifically designed to manage the unpredictable conditions of the low-Earth orbit and ensure precise satellite attitude control,critical for successful debris removal.Validated through extensive numerical simulations,our model and control strategy demonstrate substantial improvements in operational reliability and safety,significantly enhancing the success rate of deorbiting missions.展开更多
Purpose:This study provides a comprehensive bibliometric analysis of the environmental management control tools literature.It seeks to summarize this body of literature’s growth and identify the most influential auth...Purpose:This study provides a comprehensive bibliometric analysis of the environmental management control tools literature.It seeks to summarize this body of literature’s growth and identify the most influential authors,journals,and articles in this field.The main objective of this article is to determine which tools are most prominent in the literature.Methodology/approach:The study examined 541 articles published in 126 academically indexed journals in the Scopus database.The analyzed timeframe covers the period from 2011 to 2023.We used VOSviewer software for statistical calculations to map the collaborations among authors and journals and to develop a conceptual and intellectual map of the field.Results:Our findings show that the literature on environmental management control tools is flourishing.The authors who dominated this period are mainly Schaltegger,Sala,and Ulgiati.The Journal of Cleaner Production is the primary source of publications,with an astounding 241 documents.The United States attained the leading position in terms of publication with 86 documents,which explains its willingness to collaborate with other countries,followed by China and Australia with 70 and 66 papers,respectively.Finally,bibliometric analysis shows that“life cycle assessment”,“cost-benefit analysis”,and“sustainability reporting”are the most prominent tools in research on this topic.Originality/value:This article provides several starting points for researchers and practitioners investigating environmental management control tools.It contributes to broadening the field’s vision and then offers recommendations for future studies.展开更多
The recovery and utilization of ubiquitous low-grade heat are crucial for mitigating the fossil energy crisis.However,uncontrolled spontaneous heat dissipation limits its practical application.Inspired by skeletal mus...The recovery and utilization of ubiquitous low-grade heat are crucial for mitigating the fossil energy crisis.However,uncontrolled spontaneous heat dissipation limits its practical application.Inspired by skeletal muscle thermogenesis,we develop a compressible wood phase change gel with mechano-controlled heat release by infiltrating xylitol gel into wood aerogel.The xylitol gel can store recovered low-grade heat for at least 1 month by leveraging its inherent energy barrier.The hierarchically aligned lamellar structure of wood aerogel facilitates mechanical adaptation,hydrogen bond formation,and energy dissipation between the wood aerogel and the xylitol gel,increasing the compressive strength and toughness of wood phase change gel fivefold compared to xylitol gel.This enhancement effect enables repetitive contact-separation motions between the wood phase change gel and the substrate during radial compression,overcoming the energy barrier and releasing approximately 178.6 J g−1 of heat.As a proof-of-concept,the wood phase change gel serves as the hot side in a thermoelectric generator,providing about 2.13 W m^(−2) of clean electricity by the controlled utilization of recovered solar heat.This study presents a sustainable method to achieve off-grid electricity generation through the controlled utilization of recovered low-grade heat.展开更多
With the development of modern society,the functions of administrative institutions and public institutions are constantly evolving.Under the background of comprehensively deepening reform,higher requirements are put ...With the development of modern society,the functions of administrative institutions and public institutions are constantly evolving.Under the background of comprehensively deepening reform,higher requirements are put forward for the financial management of administrative institutions and public institutions.The financial management status of administrative institutions and public institutions will directly affect the quality of public services.Therefore,it is necessary to strengthen the internal control of financial management.By leveraging the constraints and supervision mechanisms of internal control,the transparency and credibility of financial management can be effectively enhanced.However,in the actual internal control and financial management of administrative institutions and public institutions,there are still some problems,which make it difficult to improve the level of financial management and affect the sustainable development of administrative institutions and public institutions.By analyzing the internal control and financial management of administrative institutions and public institutions under the new situation,this article proposes plans such as strengthening the construction of professional management teams,deeply using information technology means,and improving the internal control system,effectively enhancing the management efficiency of administrative institutions and public institutions and better adapting to the development of the times.展开更多
In this paper, we conduct analysis on the development and optimization of financial management and the benefit distribution pattern from perspective of multi-dimensional cooperation enterprise. Financial management is...In this paper, we conduct analysis on the development and optimization of financial management and the benefit distribution pattern from perspective of multi-dimensional cooperation enterprise. Financial management is the whole process of capital operation of the modern enterprise decision-making, planning and control of the management activities. Financial management is an important part of enterprise management, enterprise＇ s sustainable development requires the financial management in the central position in the management of the enterprise, according to the present our country enterprise financial management of a series of problems, in this paper, starting from the connotation of the enterprise financial management, we analyses the center of the enterprise financial management status and further puts forward some countermeasures to solve from the perspectives of the multi-dimensional cooperation which obtains the satisfactory performance.展开更多
By inducing the typical inventory control problem - the bullwhip effect, this paper presents vendor managed inventory (VMI) control methods on the basis of traditional methods of inventory management methods, construc...By inducing the typical inventory control problem - the bullwhip effect, this paper presents vendor managed inventory (VMI) control methods on the basis of traditional methods of inventory management methods, constructs a VMI mathematics model, and analyzes the influence of VMI on inventory cost and channel profit. Finally, a special case is studied to verify that VMI is an effective supply chain strategy that can not only increase channel profit of supplier and customer but also improve full channel coordination, thereby reducing the bullwhip effect.展开更多
The status and supporting policies of cold chain logistics equipment man- agement and control in China were described. The connotation of Internet of Things and its impact on cold chain logistics equipment management ...The status and supporting policies of cold chain logistics equipment man- agement and control in China were described. The connotation of Internet of Things and its impact on cold chain logistics equipment management and control were ana- lyzed from external form to internal nature. Through introducing the value chain and relevant equipments of cold chain logistics, the correlation between the main technologies in Internet of Things and the common indices for cold chain logistics equipment management and control was analyzed in detail. The application values of Internet of Things technologies in cold chain logistics equipment management and control were illustrated, including the sample analysis on the application of radio-frequency identification （RFID）. After the establishment of BSC performance evaluation index system of cold chain logistics equipment management and control, the optimization measures and suggestions on cold chain logistics equipment management and control under Internet of Things were put forward.展开更多
As the sources of overt and covert potential safety hazards were widespread, the safety control and management of rural tourism became more complicated and difficult, which required more for technological support of r...As the sources of overt and covert potential safety hazards were widespread, the safety control and management of rural tourism became more complicated and difficult, which required more for technological support of rural tourism safety management. Based on the latitude of technological support, from the perspective of management practice of rural tourism safety, through analysis on inner symbiosis of management and technological support of rural tourism safety, the paper had studied three parts of control and management system of rural tourism safety, which were rural tourism safety identification, rural tourism safety isolation and control, and rural tourism safety treatment and solution; and the connotation of technological support during safety management had been discussed from the three aspects. It hoped to serve as reference for tourism safety management and control, so as to promote healthy, stable and sustainable development of tourism.展开更多
With the increasing integration of emerging source-load types such as distributed photovoltaics,electric vehicles,and energy storage into distribution networks,the operational characteristics of these networks have ev...With the increasing integration of emerging source-load types such as distributed photovoltaics,electric vehicles,and energy storage into distribution networks,the operational characteristics of these networks have evolved from traditional single-load centers to complex multi-source,multi-load systems.This transition not only increases the difficulty of effectively classifying distribution networks due to their heightened complexity but also renders traditional energy management approaches-primarily focused on economic objectives-insufficient to meet the growing demands for flexible scheduling and dynamic response.To address these challenges,this paper proposes an adaptive multi-objective energy management strategy that accounts for the distinct operational requirements of distribution networks with a high penetration of new-type source-loads.The goal is to establish a comprehensive energy management framework that optimally balances energy efficiency,carbon reduction,and economic performance in modern distribution networks.To enhance classification accuracy,the strategy constructs amulti-dimensional scenario classification model that integrates environmental and climatic factors by analyzing the operational characteristics of new-type distribution networks and incorporating expert knowledge.An improved split-coupling K-means preclustering algorithm is employed to classify distribution networks effectively.Based on the classification results,fuzzy logic control is then utilized to dynamically optimize the weighting of each objective,allowing for an adaptive adjustment of priorities to achieve a flexible and responsivemulti-objective energy management strategy.The effectiveness of the proposed approach is validated through practical case studies.Simulation results indicate that the proposed method improves classification accuracy by 18.18%compared to traditional classification methods and enhances energy savings and carbon reduction by 4.34%and 20.94%,respectively,compared to the fixed-weight strategy.展开更多
Underground coal mining is inherently hazardous,with uncontrolled ground failure regarded as one of only several critical risks for multiple fatality events.Development,implementation and management of overarching sys...Underground coal mining is inherently hazardous,with uncontrolled ground failure regarded as one of only several critical risks for multiple fatality events.Development,implementation and management of overarching systems and procedures for maintaining strata control is an important step to mitigating the impact of ground failure hazards at a mine site operational level.This paper summarised the typical pro-active ground control management system(PGCMS)implemented in various Australian underground coal mines.Australia produces approximately 100 million tonnes a year of metallurgical and thermal coal from approximately 30 of the world’s safest longwall mines operating in New South Wales and Queensland.The increased longwall productivity required to achieve both high levels of safety and profitability,places significant emphasis on the reliability of pro-active ground control management for longwall mining operations.Increased depths,adverse geological conditions,elevated variable stress regimes and weaker ground conditions,coupled with an industry wide need for increased development rates continue to make ground control management challenging.Ground control management is not only about ground support and pillar design though but also a structured process that requires a coordinated effort from all levels of the workforce to both minimise the occurrence of adverse geotechnical events and mitigate the potential risks when they do occur.The PGCMS presented in this paper is proven to provide both a safer and more productive mine environment through minimisation of unplanned delays.The critical elements of the method are presented in detail and demonstrate the utility and value of a ground control management system that has potential for implementation in underground coal mining globally.展开更多
This paper studies the multi-sensor management problem for low earth orbit(LEO) infrared warning constellation used to track a midcourse missile. A covariance control approach, which selects sensor combinations or sub...This paper studies the multi-sensor management problem for low earth orbit(LEO) infrared warning constellation used to track a midcourse missile. A covariance control approach, which selects sensor combinations or subset based on the difference between the desired covariance matrix and the actual covariance of each target, is used for sensor management, including some matrix metrics to measure the differentia between two covariance matrices. Besides, to meet the requirements of the space based warning system, the original covariance control approach is improved. Simulation results demonstrate that the covariance control approach is able to provide a better tracking performance by providing a well-designed desired covariance and balance tracking performance goals with system demands.展开更多
基金supported by the Natural Science Foundation of Jiangsu Province(BK20231445)Aeronautical Science Foundation of China(20230028052001).
文摘The proton exchange membrane fuel cell(PEMFC)and the hydrogen hybrid power system are studied by the fuzzy-PID(FPID)controlmethod and the fuzzy-PID controlmethod by Artificial Bee Colony algorithm(ABCFPID),respectively.The results reveal that compared with the FPID control method,the temperature overshoot of the PEMFC stack under the ABC-FPID control method is decreased by 0.6%.Moreover,the circulating water flow rate within the full operating envelope(about 3 min)is reduced by 19.46 L,which means the ABC-FPID control method is more effective in regulating the stack temperature.Then,the ABC-FPID control method is proposed to study the hydrogen hybrid power system,and the system output power matching,operating characteristic curve of the fuel cell,state of charge(SOC)of the lithium battery,system efficiency and hydrogen demand are obtained.The results indicate that the maximum system efficiency reaches 46.3%,the average system efficiency is 33.8%,and the average hydrogen demand is 0.192 kg/s.Overall,the ABC-FPID control method can efficiently ensure the stability of the fuel cell’s output power,and actively prompt the lithium battery to fulfill the function of“peak shaving and valley filling”under variable load power conditions.
文摘The China-Laos Railway(CLR),connecting two nations,has created a new paradigm for international cooperation on border management.On September 4,2025,China and Laos signed an intergovernmental agreement on"juxtaposed border control"arrangements for the CLR,the first such agreement between China and a neighboring country.
基金co-supported by the National Key R&D Program of China(No.2023YFB4704400)the Zhejiang Provincial Natural Science Foundation of China(No.LQ24F030012)the National Natural Science Foundation of China General Project(No.62373033)。
文摘A composite anti-disturbance predictive control strategy employing a Multi-dimensional Taylor Network(MTN)is presented for unmanned systems subject to time-delay and multi-source disturbances.First,the multi-source disturbances are addressed according to their specific characteristics as follows:(A)an MTN data-driven model,which is used for uncertainty description,is designed accompanied with the mechanism model to represent the unmanned systems;(B)an adaptive MTN filter is used to remove the influence of the internal disturbance;(C)an MTN disturbance observer is constructed to estimate and compensate for the influence of the external disturbance;(D)the Extended Kalman Filter(EKF)algorithm is utilized as the learning mechanism for MTNs.Second,to address the time-delay effect,a recursiveτstep-ahead MTN predictive model is designed utilizing recursive technology,aiming to mitigate the impact of time-delay,and the EKF algorithm is employed as its learning mechanism.Then,the MTN predictive control law is designed based on the quadratic performance index.By implementing the proposed composite controller to unmanned systems,simultaneous feedforward compensation and feedback suppression to the multi-source disturbances are conducted.Finally,the convergence of the MTN and the stability of the closed-loop system are established utilizing the Lyapunov theorem.Two exemplary applications of unmanned systems involving unmanned vehicle and rigid spacecraft are presented to validate the effectiveness of the proposed approach.
文摘BACKGROUND Inadequate glycemic control in patients with type 2 diabetes(T2DM)is a major public health problem and a significant risk factor for the progression of diabetic complications.AIM To evaluate the effects of intensive and supportive glycemic management strategies over a 12-month period in individuals with T2DM with glycated hemoglobin(HbA1c)≥10%and varying backgrounds of glycemic control.METHODS This prospective observational study investigated glycemic control in patients with poorly controlled T2DM over 12 months.Participants were categorized into four groups based on prior glycemic history:Newly diagnosed,previously well controlled with recent worsening,previously off-target but now worsening,and HbA1c consistently above 10%.HbA1c levels were monitored quarterly,and patients received medical,educational,and dietary support as needed.The analysis focused on the success rates of good glycemic control and the associated factors within each group.RESULTS The study showed significant improvements in HbA1c levels in all participants.The most significant improvement was observed in individuals newly diagnosed with diabetes:65%achieved an HbA1c target of≤7%.The results varied between participants with different glycemic control histories,followed by decreasing success rates:39%in participants with previously good glycemic control,21%in participants whose glycemic control had deteriorated compared to before,and only 10%in participants with persistently poor control,with mean HbA1c levels of 6.3%,7.7%,8.2%,and 9.7%,respectively.After one year,65.2%of the“newly diagnosed patients”,39.3%in the“previously controlled group”,21.9%in the“previously off-target but now worsened'”group and 10%in the“poorly controlled from the start”group had achieved HbA1c levels of 7 and below.CONCLUSION In poorly controlled diabetes,the rate at which treatment goals are achieved is associated with the glycemic background characteristics,emphasizing the need for tailored strategies.Therefore,different and comprehensive treatment approaches are needed for patients with persistent uncontrolled diabetes.
文摘Against the backdrop of the increasingly complex construction market environment,the whole-process cost management of agency-built projects faces issues such as cost overruns and insufficient management efficiency due to the numerous stages and high technical requirements involved.This paper focuses on the key stages of whole-process cost management in agency-built projects,including project initiation,design,construction,and completion.It proposes strategies to optimize the cost management process and enhance management efficiency,providing theoretical support and practical guidance for the whole-process cost management under the agency-built model.
文摘With intensifying market competition and growing financial complexity,strengthening risk control in corporate capital investment management has become imperative.This paper examines the critical role of risk management in ensuring financial stability,optimizing resource allocation,and achieving strategic objectives.It identifies key risk categories including market volatility,liquidity challenges,operational risks,and strategic misalignment,while proposing targeted strategies such as dynamic monitoring,strategic planning,decision-making optimization,and focused risk management.
基金Urumqi Health Committee Science and Technology Plan Project(202343)。
文摘Relevant documents issued by the General Office of the State Council and the Ministry of Health require hospitals to reduce operating costs and improve efficiency,which will place newer and higher demands on medical equipment management.However,the current process of medical equipment quality control in hospitals faces issues such as weak control awareness,untimely maintenance of faulty equipment,and a lack of informatization management tools.These problems severely restrict the development of medical equipment quality management.To address these issues,this article uses a tertiary hospital in Urumqi as an experimental platform to analyze the deficiencies in the current medical equipment quality control management system of public hospitals.Based on practical needs such as equipment procurement,contract management,and equipment management,the research is conducted from three aspects:system architecture,functional design,and talent training,utilizing an information management system.Suggestions are provided,aiming to make a modest contribution to promoting medical equipment quality control management in China.
文摘The complexity of real estate construction project management is highlighted,and this paper deeply discusses its technology and risk control strategy.Analyze the application field of technology and the construction of risk management system,and verify the effectiveness of the strategy through cases.The is concluded that the integration of technology management and risk control is the core path to improve the efficiency of the project,and it points out that the application of intelligent tools should be strengthened and explore the new management mode under the dual-carbon goal.
文摘Real estate construction management faces technological innovation and risk-control challenges.Digital,intelligent,and green construction technologies are driving management transformation.This paper explores innovation paths like BIM,IoT,AI robots,and eco-friendly materials,analyzes risk characteristics,and proposes strategies such as a full-process risk management framework,technology verification,standardization,and data security systems.It also discusses the supporting role of government regulation,industry standards,corporate governance,and personnel training,aiming to provide theoretical and practical guidance for modernizing real estate construction management.
基金This work was supported by the National Natural Science Foundation of China(Grant Nos.62173107 and 12202058)the Young Elite Scientists Sponsorship Program by Beijing Association for Science and Technology(Grant No.BYESS2023344).
文摘The increasing accumulation of space debris threatens the integrity and functionality of satellites and complicates orbital operations.This paper constructs an advanced rigid-flexible coupling dynamic model for tethered satellite systems,tailored to enhance space debris management.Utilizing the nodal position finite element method,the model significantly improves the precision of simulating tether dynamics and captures the complex interactions involving satellite and debris attitude dynamics.This advancement allows for detailed examination of potential tether entanglements and provides crucial data for optimizing deorbiting processes.To overcome the limitations of conventional control techniques,a robust adaptive sliding mode control strategy is developed.This approach is specifically designed to manage the unpredictable conditions of the low-Earth orbit and ensure precise satellite attitude control,critical for successful debris removal.Validated through extensive numerical simulations,our model and control strategy demonstrate substantial improvements in operational reliability and safety,significantly enhancing the success rate of deorbiting missions.
文摘Purpose:This study provides a comprehensive bibliometric analysis of the environmental management control tools literature.It seeks to summarize this body of literature’s growth and identify the most influential authors,journals,and articles in this field.The main objective of this article is to determine which tools are most prominent in the literature.Methodology/approach:The study examined 541 articles published in 126 academically indexed journals in the Scopus database.The analyzed timeframe covers the period from 2011 to 2023.We used VOSviewer software for statistical calculations to map the collaborations among authors and journals and to develop a conceptual and intellectual map of the field.Results:Our findings show that the literature on environmental management control tools is flourishing.The authors who dominated this period are mainly Schaltegger,Sala,and Ulgiati.The Journal of Cleaner Production is the primary source of publications,with an astounding 241 documents.The United States attained the leading position in terms of publication with 86 documents,which explains its willingness to collaborate with other countries,followed by China and Australia with 70 and 66 papers,respectively.Finally,bibliometric analysis shows that“life cycle assessment”,“cost-benefit analysis”,and“sustainability reporting”are the most prominent tools in research on this topic.Originality/value:This article provides several starting points for researchers and practitioners investigating environmental management control tools.It contributes to broadening the field’s vision and then offers recommendations for future studies.
基金supported by the National Key R&D Program of China (2023YFD2201403)the National Natural Science Foundation of China (Grant Nos. 32171693, 32201482)+1 种基金the Heilongjiang Natural Science Foundation Outstanding Youth project (Grant No. YQ2022C002)College Students'Innovative Entrepreneurial Training Plan Program (202410225338)
文摘The recovery and utilization of ubiquitous low-grade heat are crucial for mitigating the fossil energy crisis.However,uncontrolled spontaneous heat dissipation limits its practical application.Inspired by skeletal muscle thermogenesis,we develop a compressible wood phase change gel with mechano-controlled heat release by infiltrating xylitol gel into wood aerogel.The xylitol gel can store recovered low-grade heat for at least 1 month by leveraging its inherent energy barrier.The hierarchically aligned lamellar structure of wood aerogel facilitates mechanical adaptation,hydrogen bond formation,and energy dissipation between the wood aerogel and the xylitol gel,increasing the compressive strength and toughness of wood phase change gel fivefold compared to xylitol gel.This enhancement effect enables repetitive contact-separation motions between the wood phase change gel and the substrate during radial compression,overcoming the energy barrier and releasing approximately 178.6 J g−1 of heat.As a proof-of-concept,the wood phase change gel serves as the hot side in a thermoelectric generator,providing about 2.13 W m^(−2) of clean electricity by the controlled utilization of recovered solar heat.This study presents a sustainable method to achieve off-grid electricity generation through the controlled utilization of recovered low-grade heat.
文摘With the development of modern society,the functions of administrative institutions and public institutions are constantly evolving.Under the background of comprehensively deepening reform,higher requirements are put forward for the financial management of administrative institutions and public institutions.The financial management status of administrative institutions and public institutions will directly affect the quality of public services.Therefore,it is necessary to strengthen the internal control of financial management.By leveraging the constraints and supervision mechanisms of internal control,the transparency and credibility of financial management can be effectively enhanced.However,in the actual internal control and financial management of administrative institutions and public institutions,there are still some problems,which make it difficult to improve the level of financial management and affect the sustainable development of administrative institutions and public institutions.By analyzing the internal control and financial management of administrative institutions and public institutions under the new situation,this article proposes plans such as strengthening the construction of professional management teams,deeply using information technology means,and improving the internal control system,effectively enhancing the management efficiency of administrative institutions and public institutions and better adapting to the development of the times.
文摘In this paper, we conduct analysis on the development and optimization of financial management and the benefit distribution pattern from perspective of multi-dimensional cooperation enterprise. Financial management is the whole process of capital operation of the modern enterprise decision-making, planning and control of the management activities. Financial management is an important part of enterprise management, enterprise＇ s sustainable development requires the financial management in the central position in the management of the enterprise, according to the present our country enterprise financial management of a series of problems, in this paper, starting from the connotation of the enterprise financial management, we analyses the center of the enterprise financial management status and further puts forward some countermeasures to solve from the perspectives of the multi-dimensional cooperation which obtains the satisfactory performance.
文摘By inducing the typical inventory control problem - the bullwhip effect, this paper presents vendor managed inventory (VMI) control methods on the basis of traditional methods of inventory management methods, constructs a VMI mathematics model, and analyzes the influence of VMI on inventory cost and channel profit. Finally, a special case is studied to verify that VMI is an effective supply chain strategy that can not only increase channel profit of supplier and customer but also improve full channel coordination, thereby reducing the bullwhip effect.
基金Supported by the Project of Philosophy and Social Sciences during the 12th Five-year Plan of Guangxi Zhuang Autonomous Region,China (11FGL031)~~
文摘The status and supporting policies of cold chain logistics equipment man- agement and control in China were described. The connotation of Internet of Things and its impact on cold chain logistics equipment management and control were ana- lyzed from external form to internal nature. Through introducing the value chain and relevant equipments of cold chain logistics, the correlation between the main technologies in Internet of Things and the common indices for cold chain logistics equipment management and control was analyzed in detail. The application values of Internet of Things technologies in cold chain logistics equipment management and control were illustrated, including the sample analysis on the application of radio-frequency identification （RFID）. After the establishment of BSC performance evaluation index system of cold chain logistics equipment management and control, the optimization measures and suggestions on cold chain logistics equipment management and control under Internet of Things were put forward.
基金Supported by Foundation Item of Natural Science of Fujian Province(2010J05149)Project of Minjiang College(YSY09001B)~~
文摘As the sources of overt and covert potential safety hazards were widespread, the safety control and management of rural tourism became more complicated and difficult, which required more for technological support of rural tourism safety management. Based on the latitude of technological support, from the perspective of management practice of rural tourism safety, through analysis on inner symbiosis of management and technological support of rural tourism safety, the paper had studied three parts of control and management system of rural tourism safety, which were rural tourism safety identification, rural tourism safety isolation and control, and rural tourism safety treatment and solution; and the connotation of technological support during safety management had been discussed from the three aspects. It hoped to serve as reference for tourism safety management and control, so as to promote healthy, stable and sustainable development of tourism.
基金supported by the Science and Technology Project of the Headquarters of the State Grid Corporation(project code:5400-202323233A-1-1-ZN).
文摘With the increasing integration of emerging source-load types such as distributed photovoltaics,electric vehicles,and energy storage into distribution networks,the operational characteristics of these networks have evolved from traditional single-load centers to complex multi-source,multi-load systems.This transition not only increases the difficulty of effectively classifying distribution networks due to their heightened complexity but also renders traditional energy management approaches-primarily focused on economic objectives-insufficient to meet the growing demands for flexible scheduling and dynamic response.To address these challenges,this paper proposes an adaptive multi-objective energy management strategy that accounts for the distinct operational requirements of distribution networks with a high penetration of new-type source-loads.The goal is to establish a comprehensive energy management framework that optimally balances energy efficiency,carbon reduction,and economic performance in modern distribution networks.To enhance classification accuracy,the strategy constructs amulti-dimensional scenario classification model that integrates environmental and climatic factors by analyzing the operational characteristics of new-type distribution networks and incorporating expert knowledge.An improved split-coupling K-means preclustering algorithm is employed to classify distribution networks effectively.Based on the classification results,fuzzy logic control is then utilized to dynamically optimize the weighting of each objective,allowing for an adaptive adjustment of priorities to achieve a flexible and responsivemulti-objective energy management strategy.The effectiveness of the proposed approach is validated through practical case studies.Simulation results indicate that the proposed method improves classification accuracy by 18.18%compared to traditional classification methods and enhances energy savings and carbon reduction by 4.34%and 20.94%,respectively,compared to the fixed-weight strategy.
文摘Underground coal mining is inherently hazardous,with uncontrolled ground failure regarded as one of only several critical risks for multiple fatality events.Development,implementation and management of overarching systems and procedures for maintaining strata control is an important step to mitigating the impact of ground failure hazards at a mine site operational level.This paper summarised the typical pro-active ground control management system(PGCMS)implemented in various Australian underground coal mines.Australia produces approximately 100 million tonnes a year of metallurgical and thermal coal from approximately 30 of the world’s safest longwall mines operating in New South Wales and Queensland.The increased longwall productivity required to achieve both high levels of safety and profitability,places significant emphasis on the reliability of pro-active ground control management for longwall mining operations.Increased depths,adverse geological conditions,elevated variable stress regimes and weaker ground conditions,coupled with an industry wide need for increased development rates continue to make ground control management challenging.Ground control management is not only about ground support and pillar design though but also a structured process that requires a coordinated effort from all levels of the workforce to both minimise the occurrence of adverse geotechnical events and mitigate the potential risks when they do occur.The PGCMS presented in this paper is proven to provide both a safer and more productive mine environment through minimisation of unplanned delays.The critical elements of the method are presented in detail and demonstrate the utility and value of a ground control management system that has potential for implementation in underground coal mining globally.
基金supported by the National Natural Science Foundation of China(61690210 61690213)
文摘This paper studies the multi-sensor management problem for low earth orbit(LEO) infrared warning constellation used to track a midcourse missile. A covariance control approach, which selects sensor combinations or subset based on the difference between the desired covariance matrix and the actual covariance of each target, is used for sensor management, including some matrix metrics to measure the differentia between two covariance matrices. Besides, to meet the requirements of the space based warning system, the original covariance control approach is improved. Simulation results demonstrate that the covariance control approach is able to provide a better tracking performance by providing a well-designed desired covariance and balance tracking performance goals with system demands.
