Dear editor,In 2016,several landmark government initiatives were launched in an effort to build a more healthy China.In March,the National People’s Congress of China adopted the 13th FiveYear Plan,which sets out new ...Dear editor,In 2016,several landmark government initiatives were launched in an effort to build a more healthy China.In March,the National People’s Congress of China adopted the 13th FiveYear Plan,which sets out new objectives,principles,and targets for 2016–2020,1including action plans for enhancing environmental protection and green growth,promoting individual展开更多
Different loads in the network require distinct Qo S standard, while present routing strategies for complex networks ignored this fact. To solve this problem, we designed a routing strategy RS-MP with multiple priorit...Different loads in the network require distinct Qo S standard, while present routing strategies for complex networks ignored this fact. To solve this problem, we designed a routing strategy RS-MP with multiple priorities by which packets are classified into privileged-packets and common-packets. In RS-MP, privileged-packets route by the Shortest Path Algorithm, and do not need to queue up. Common-packets＇ routes are determined by a new factor BJmax of the network. The BJmax stands for the largest betweenness centrality. By minimizing BJmax, the throughout capacity of the network can be maximized. The simulation results show that RS-MP can guarantee privileged-packets with the shortest path length and smallest delay, and maximized throughout capacity for common packets in the no-congestion state.展开更多
A novel assay for the identification of semicarbazide sensitive amine oxidase in human umbilical artery tissue by a priority based strategy in the mass spectrometry was developed. The pro tein extract was separated b...A novel assay for the identification of semicarbazide sensitive amine oxidase in human umbilical artery tissue by a priority based strategy in the mass spectrometry was developed. The pro tein extract was separated by SDS PAGE, and then an entire band at 96 KDa was excised and digested by trypsin. The digested peptides were separated by capillary ClS analytical column and detected by ESI MS MS. In the direct data dependent method （also called traditional method）, the semicarbaz ide sensitive amine oxidase （SSAO） cannot be identified by LC-ESI-MS-MS. Compared with the tra ditional method, our assay by a priority based strategy in the mass spectrometry can successfully identify the target protein SSAO in the complex biological sample. As 60 μg, 120μg, 240 μg of total protein extract were loaded on the SDS PAGE, the Mascot result showed that SSAO score was 46, 86 and 137, the sequence coverage was 2 % , 5 % and 10 % , and the peptide count was 2, 6 and 10, re spectively. The MS/MS spectra of two unique peptides of SSAO were confirmed by manual identifica tion. The band at 96 KDa included SSAO was validated by the Western blot. The assay significantly improved the score and coverage of target protein and enhanced the identification of reliability and the confidence.展开更多
It is considered as an important and effective means to give priority to the development of public transit which can improve the efficiency of transportation resources utilization and alleviate traffic jams. Public tr...It is considered as an important and effective means to give priority to the development of public transit which can improve the efficiency of transportation resources utilization and alleviate traffic jams. Public transit signal priority belongs to the "time priority" among the right-of-way priorities. After reviewing the existing bus priority signal control strategies and the advances in related technologies at home and abroad, this article analyzed the breakthrough direction of the bus signal priority design technologies suitable for China's conditions, and then proposed the hardware and software systems and the modules for the bus priority signal control system. Finally, the hardware-in-the-loop simulation (HILS) was introduced to evaluate bus priority signal control programs in order to optimize the control strategies.展开更多
To realize profit making as well as a steady growth, enterprises should have the marketing strategies meeting the development.In this paper, the experience of enterprise marketing is discussed through the analysis on ...To realize profit making as well as a steady growth, enterprises should have the marketing strategies meeting the development.In this paper, the experience of enterprise marketing is discussed through the analysis on Wanda and Baogang Group successfully applying the principle giving priority to efficiency and achieving outstanding marketing strategies, and also the problems necessary for enterprises to focus in making marketing strategies are analyzed, aiming at providing certain reference for enterprises to make marketing strategies.展开更多
In the imaging observation system, imaging task scheduling is an important topic. Most scholars study the imaging task scheduling from the perspective of static priority, and only a few from the perspective of dynamic...In the imaging observation system, imaging task scheduling is an important topic. Most scholars study the imaging task scheduling from the perspective of static priority, and only a few from the perspective of dynamic priority. However,the priority of the imaging task is dynamic in actual engineering. To supplement the research on imaging observation, this paper proposes the task priority model, dynamic scheduling strategy and Heuristic algorithm. At first, this paper analyzes the relevant theoretical basis of imaging observation, decomposes the task priority into four parts, including target priority, imaging task priority, track, telemetry & control(TT&C)requirement priority and data transmission requirement priority, summarizes the attribute factors that affect the above four types of priority in detail, and designs the corresponding priority model. Then, this paper takes the emergency tasks scheduling problem as the background, proposes the dynamic scheduling strategy and heuristic algorithm. Finally, the task priority model,dynamic scheduling strategy and heuristic algorithm are verified by experiments.展开更多
This paper deals with the supervisory control problem of discrete event systems modeled by labeled Petri nets. The system is originally unbounded. First, the solvability of the problem is confirmed. A necessary condit...This paper deals with the supervisory control problem of discrete event systems modeled by labeled Petri nets. The system is originally unbounded. First, the solvability of the problem is confirmed. A necessary condition is given and proven for the existence of a feasible priority-based controller based on the notions of liveness and transition invariants. Next, a cyclic behavior graph is constructed, which shows the reachable markings that guarantee the maximum liveness of the system within a given bound vector. Finally, an on-line control strategy is proposed to enforce boundedness and liveness to the given system by appending priority relations to transitions. The dynamic priority relation changes flexibly according to the current state of the system and enforces the system evolving in a bounded and live manner. In addition, numerical examples are studied to verify the validity of the proposed approach that remains the structure of the plant net and is efficient for on-line control.展开更多
Background:In fire-prone ecosystems,plant species having different post-fire regeneration strategies(PFRS)coexist at the local scale while showing different growth dynamics.To evaluate the effect of PFRS on species re...Background:In fire-prone ecosystems,plant species having different post-fire regeneration strategies(PFRS)coexist at the local scale while showing different growth dynamics.To evaluate the effect of PFRS on species regeneration,we investigated the plant communities burned in different years in the central Yunnan Province,Southwest China.Several indicators describing plant growth and population importance were measured to compare the regeneration of four dominant tree species,including one facultative seeders(FS)and three obligate resprouters(OR).Partial correlation and mixed linear effect modeling were applied to disentangle the contribution of intrinsic and environmental factors to the interspecific variation in post-fire regeneration.Results:We identified two subtypes of plant growth strategy in the early post-fire stage for OR species;i.e.,number growth(ORþN)priority and height growth(ORþH)priority for sprouting stems.Generally,the FS and OR species varied in height growth rate with different temporal dynamics.The ORþN species occupied post-fire space horizontally with more resprouts and larger coverage than ORþH and FS species at the earlier stage.In contrast,the ORþH species generally had far less resprouts per clump,more variations in stem height and basal diameter.Factor analysis showed that the variation of post-fire plant regeneration was not effectively explained by environmental factors(R2<20%);however,the linear mixed models with the modified PFRS as a random effect substantially increased the explanation.Conclusions:The differentiated regeneration dynamics and growth priorities in the four dominant tree species indicated a critical dichotomy of habitat occupation strategy for the resprouter species during the early stage of post-fire forest restoration.Our study uncovered a trade-off between height versus number growth priority in the post-fire tree growth strategy and provides a novel perspective in understanding the living space occupying(niche partitioning)process and species coexistence in post-fire forest community assembly.展开更多
针对智慧医疗场景中高密度无线体域网(wireless body area network,WBAN)多优先级数据传输与计算资源受限的挑战,研究提出一种融合动态优先级评估与量子优化的任务卸载策略。首先通过构建医疗物联网(healthcare Internet of Things,H-I...针对智慧医疗场景中高密度无线体域网(wireless body area network,WBAN)多优先级数据传输与计算资源受限的挑战,研究提出一种融合动态优先级评估与量子优化的任务卸载策略。首先通过构建医疗物联网(healthcare Internet of Things,H-IoT)高密度WBAN网络模型,集成任务优先级分层机制与动态信道状态感知模块,建立基于生理数据特征的通信质量评估体系。其次设计多维动态调度框架,利用生理参数偏离度、数据滞留时间及抢占事件等指标实时调整任务优先级权重,结合抢占式调度策略保障急诊数据的低时延传输。再进一步改进量子遗传算法(improved quantum genetic algorithm,IQGA),采用动态量子旋转门角度调整机制优化局部搜索性能,并引入灾变修正函数提升全局收敛效率。仿真实验表明,该策略在任务平均处理时间、系统能耗、高优先级任务时延及收敛速度方面分别实现71.51%、88.21%、89.63%和78.74%的性能优化,系统综合收益提升达114.43%。研究成果为高密度医疗物联网场景下的实时任务调度与资源分配提供了理论支撑与技术路径。展开更多
鉴于仓储中心存在诸多不确定的因素提出不确定事件下多仓储机器人动态路径问题(Dynamic Routing Problem of Multi Warehouse Robots under Uncertain Events, DRP-MWR-UE)。该问题考虑了多仓储机器人时变的交通网络、不确定的订单需求...鉴于仓储中心存在诸多不确定的因素提出不确定事件下多仓储机器人动态路径问题(Dynamic Routing Problem of Multi Warehouse Robots under Uncertain Events, DRP-MWR-UE)。该问题考虑了多仓储机器人时变的交通网络、不确定的订单需求。在此基础上,建立了DRP-MWR-UE的双矩阵混合整数规划模型并设计了基于混合动态变邻域搜索算法(Hybrid Dynamic Variable Neighborhood Search, HDVNS)的动态调度策略执行求解。该策略首先将事件判定、分类后由HDVNS进行重调度。为了加快算法动态响应速度和提高求解质量,HDVNS的初始阶段结合了两阶段聚类算法和自适应破坏重组的随机扰动贪婪机制,全局邻域搜索中融入了多种邻域变换策略。最后,通过与对比算法,在两种不确定事件下进行实验。结果表明,HDVNS显著优于其对比算法,是一种求解DRP-MWR-UE的有效方法。展开更多
基金supported by China Institute of Sport Science(No.16-16,16-53)
文摘Dear editor,In 2016,several landmark government initiatives were launched in an effort to build a more healthy China.In March,the National People’s Congress of China adopted the 13th FiveYear Plan,which sets out new objectives,principles,and targets for 2016–2020,1including action plans for enhancing environmental protection and green growth,promoting individual
基金supported by the Fundamental Research Funds for the Central University,China(Grant Nos.24720152047A and 15CX05025A)the Natural Science Foundation of Shandong Province,China(Grant No.ZR2014FM017)the Science and Technology Development Plan of Huangdao District,Qingdao,China(Grant No.2014-1-45)
文摘Different loads in the network require distinct Qo S standard, while present routing strategies for complex networks ignored this fact. To solve this problem, we designed a routing strategy RS-MP with multiple priorities by which packets are classified into privileged-packets and common-packets. In RS-MP, privileged-packets route by the Shortest Path Algorithm, and do not need to queue up. Common-packets＇ routes are determined by a new factor BJmax of the network. The BJmax stands for the largest betweenness centrality. By minimizing BJmax, the throughout capacity of the network can be maximized. The simulation results show that RS-MP can guarantee privileged-packets with the shortest path length and smallest delay, and maximized throughout capacity for common packets in the no-congestion state.
基金Supported by the National Basic Research Project of China(2007CB14100)
文摘A novel assay for the identification of semicarbazide sensitive amine oxidase in human umbilical artery tissue by a priority based strategy in the mass spectrometry was developed. The pro tein extract was separated by SDS PAGE, and then an entire band at 96 KDa was excised and digested by trypsin. The digested peptides were separated by capillary ClS analytical column and detected by ESI MS MS. In the direct data dependent method （also called traditional method）, the semicarbaz ide sensitive amine oxidase （SSAO） cannot be identified by LC-ESI-MS-MS. Compared with the tra ditional method, our assay by a priority based strategy in the mass spectrometry can successfully identify the target protein SSAO in the complex biological sample. As 60 μg, 120μg, 240 μg of total protein extract were loaded on the SDS PAGE, the Mascot result showed that SSAO score was 46, 86 and 137, the sequence coverage was 2 % , 5 % and 10 % , and the peptide count was 2, 6 and 10, re spectively. The MS/MS spectra of two unique peptides of SSAO were confirmed by manual identifica tion. The band at 96 KDa included SSAO was validated by the Western blot. The assay significantly improved the score and coverage of target protein and enhanced the identification of reliability and the confidence.
基金supported in part by National Basic Research Program of China (2006CB705500)National Natural Science Foundation of China (No.50738001)Outstanding Young Teachers Teaching and Research Funding Program of Southeast University
文摘It is considered as an important and effective means to give priority to the development of public transit which can improve the efficiency of transportation resources utilization and alleviate traffic jams. Public transit signal priority belongs to the "time priority" among the right-of-way priorities. After reviewing the existing bus priority signal control strategies and the advances in related technologies at home and abroad, this article analyzed the breakthrough direction of the bus signal priority design technologies suitable for China's conditions, and then proposed the hardware and software systems and the modules for the bus priority signal control system. Finally, the hardware-in-the-loop simulation (HILS) was introduced to evaluate bus priority signal control programs in order to optimize the control strategies.
文摘To realize profit making as well as a steady growth, enterprises should have the marketing strategies meeting the development.In this paper, the experience of enterprise marketing is discussed through the analysis on Wanda and Baogang Group successfully applying the principle giving priority to efficiency and achieving outstanding marketing strategies, and also the problems necessary for enterprises to focus in making marketing strategies are analyzed, aiming at providing certain reference for enterprises to make marketing strategies.
基金supported by the National Natural Science Foundation of China(61773120,61473301,71501180,71501179,61603400)。
文摘In the imaging observation system, imaging task scheduling is an important topic. Most scholars study the imaging task scheduling from the perspective of static priority, and only a few from the perspective of dynamic priority. However,the priority of the imaging task is dynamic in actual engineering. To supplement the research on imaging observation, this paper proposes the task priority model, dynamic scheduling strategy and Heuristic algorithm. At first, this paper analyzes the relevant theoretical basis of imaging observation, decomposes the task priority into four parts, including target priority, imaging task priority, track, telemetry & control(TT&C)requirement priority and data transmission requirement priority, summarizes the attribute factors that affect the above four types of priority in detail, and designs the corresponding priority model. Then, this paper takes the emergency tasks scheduling problem as the background, proposes the dynamic scheduling strategy and heuristic algorithm. Finally, the task priority model,dynamic scheduling strategy and heuristic algorithm are verified by experiments.
基金the Project of Industrial Internet and Integration of Industrialization and Industrialization of Guangxi,China under Grant No.Guigong2021-37.
文摘This paper deals with the supervisory control problem of discrete event systems modeled by labeled Petri nets. The system is originally unbounded. First, the solvability of the problem is confirmed. A necessary condition is given and proven for the existence of a feasible priority-based controller based on the notions of liveness and transition invariants. Next, a cyclic behavior graph is constructed, which shows the reachable markings that guarantee the maximum liveness of the system within a given bound vector. Finally, an on-line control strategy is proposed to enforce boundedness and liveness to the given system by appending priority relations to transitions. The dynamic priority relation changes flexibly according to the current state of the system and enforces the system evolving in a bounded and live manner. In addition, numerical examples are studied to verify the validity of the proposed approach that remains the structure of the plant net and is efficient for on-line control.
基金supported by the National Natural Science Foundation of China(41971228)the National Key R and D Program of the Ministry of Science and Technology of China(2017YFC0505200).
文摘Background:In fire-prone ecosystems,plant species having different post-fire regeneration strategies(PFRS)coexist at the local scale while showing different growth dynamics.To evaluate the effect of PFRS on species regeneration,we investigated the plant communities burned in different years in the central Yunnan Province,Southwest China.Several indicators describing plant growth and population importance were measured to compare the regeneration of four dominant tree species,including one facultative seeders(FS)and three obligate resprouters(OR).Partial correlation and mixed linear effect modeling were applied to disentangle the contribution of intrinsic and environmental factors to the interspecific variation in post-fire regeneration.Results:We identified two subtypes of plant growth strategy in the early post-fire stage for OR species;i.e.,number growth(ORþN)priority and height growth(ORþH)priority for sprouting stems.Generally,the FS and OR species varied in height growth rate with different temporal dynamics.The ORþN species occupied post-fire space horizontally with more resprouts and larger coverage than ORþH and FS species at the earlier stage.In contrast,the ORþH species generally had far less resprouts per clump,more variations in stem height and basal diameter.Factor analysis showed that the variation of post-fire plant regeneration was not effectively explained by environmental factors(R2<20%);however,the linear mixed models with the modified PFRS as a random effect substantially increased the explanation.Conclusions:The differentiated regeneration dynamics and growth priorities in the four dominant tree species indicated a critical dichotomy of habitat occupation strategy for the resprouter species during the early stage of post-fire forest restoration.Our study uncovered a trade-off between height versus number growth priority in the post-fire tree growth strategy and provides a novel perspective in understanding the living space occupying(niche partitioning)process and species coexistence in post-fire forest community assembly.
文摘针对智慧医疗场景中高密度无线体域网(wireless body area network,WBAN)多优先级数据传输与计算资源受限的挑战,研究提出一种融合动态优先级评估与量子优化的任务卸载策略。首先通过构建医疗物联网(healthcare Internet of Things,H-IoT)高密度WBAN网络模型,集成任务优先级分层机制与动态信道状态感知模块,建立基于生理数据特征的通信质量评估体系。其次设计多维动态调度框架,利用生理参数偏离度、数据滞留时间及抢占事件等指标实时调整任务优先级权重,结合抢占式调度策略保障急诊数据的低时延传输。再进一步改进量子遗传算法(improved quantum genetic algorithm,IQGA),采用动态量子旋转门角度调整机制优化局部搜索性能,并引入灾变修正函数提升全局收敛效率。仿真实验表明,该策略在任务平均处理时间、系统能耗、高优先级任务时延及收敛速度方面分别实现71.51%、88.21%、89.63%和78.74%的性能优化,系统综合收益提升达114.43%。研究成果为高密度医疗物联网场景下的实时任务调度与资源分配提供了理论支撑与技术路径。
文摘鉴于仓储中心存在诸多不确定的因素提出不确定事件下多仓储机器人动态路径问题(Dynamic Routing Problem of Multi Warehouse Robots under Uncertain Events, DRP-MWR-UE)。该问题考虑了多仓储机器人时变的交通网络、不确定的订单需求。在此基础上,建立了DRP-MWR-UE的双矩阵混合整数规划模型并设计了基于混合动态变邻域搜索算法(Hybrid Dynamic Variable Neighborhood Search, HDVNS)的动态调度策略执行求解。该策略首先将事件判定、分类后由HDVNS进行重调度。为了加快算法动态响应速度和提高求解质量,HDVNS的初始阶段结合了两阶段聚类算法和自适应破坏重组的随机扰动贪婪机制,全局邻域搜索中融入了多种邻域变换策略。最后,通过与对比算法,在两种不确定事件下进行实验。结果表明,HDVNS显著优于其对比算法,是一种求解DRP-MWR-UE的有效方法。
