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固定化漆酶载体研究进  [PDF]
王新**,刘丽,陆佳靓,梁吉艳,崔丽
生态学杂志 , 2013,
Abstract: ?漆酶作为一种易得且具有优良特性的氧化酶类,其在环境污染治理领域的应用越来越受到研究人员的重视。对游离态漆酶进行的固定化处理使得酶的效率和重复使用率都有所提高,在酶固定化的过程中对于载体的选择十分关键。易得、适宜的载体可以简化固定化酶的制备工艺,利于固定化酶的工业化生产和应用。相反,不合适的载体会直接影响酶固定化后的使用效果。近几年,由于材料、环境等相关领域的快速发展,越来越多的新型、优质的材料被制作成固定化漆酶的载体,这些新型的载体都在一定程度上提升了漆酶的利用率。另外,对已使用的载体进行改良后再用于固定化漆酶也使得漆酶的性能有所提高。本文综合介绍了几种近几年较新型的漆酶固定化的载体材料,并对固定化后的漆酶性能做了简要总结,确定了不同载体进行固定化漆酶时的最佳条件,同时对各种载体的特点进行了简单的说明,最后对于固定化漆酶载体的发展趋势给予了分析。
基于信息还原的过程化理想调度评估方法
Perfect Dispatch Evaluation Method Based on Information Restoration and Process Analysis
 [PDF]

李翔, 郭少青
Smart Grid (SG) , 2016, DOI: 10.12677/SG.2016.65035
Abstract:
为提高电网调度运行的精益化管理水平,美国PJM电力市场于2007年提出了理想调度评估方法。与传统的电网运行评估方法相比,理想调度从后评估的角度,通过“反演”计算电网调度运行中的最理想方案,以量化评估实际运行情况与理想方案之间的差距。本文将理想调度与实际的业务过程相结合,全面辨识影响电网运行效益调度程度的各类因素。通过引入信息还原等评估理念,基于对电网运行全过程记录,本文提出了过程化的理想调度评估方法,实现了对调度员决策水平的评估分析及各类外部因素影响程度的量化计算,为进一步提高电网调度运行的精益化水平提供了科学的手段与工具。最后,以实际电网的运行数据构造算例,验证了本文所提出方法的合理性与有效性。
In order to enhance the management level of power system operation, PJM power market operator proposed the Perfect Dispatch Evaluation Method (PDEM) in 2007. Compared to the traditional evaluation methods, PDEM incorporated the actual operation boundaries and determined a virtual “Perfect Dispatch Scheme” (PDS) from post hoc perspectives. In this case, the deviations between the actual situation and the PDS could be quantitatively analyzed. This paper further implemented the PDS into various process of power system operation, identified the critical influencing factors, and formulated the influencing mechanisms. Based on information restoration and process analysis techniques, a novel PDEM is proposed to identify the effects incurred by decision and non-decision factors, respectively. In the end, a numerical case based on real operation data is studied to testify the effectiveness of the proposed method.
張家口專区药材生产大躍进  [PDF]
白鈴声
中国中药杂志 , 1958,
Abstract: <正>我孏幸┎墓ぷ骷改昀丛诘痴奉I导下,發展很快,农民对药材生产的情緒很高,以去年为例实际收購量达127种480余万斤,超过历史上任何一年。今年在工农業大躍进的形势下根据支援地方工業,和实現农業發展綱要四十条,野生植物农業化变家种的要求,打破原計划,制定了新的計划。58年躍进規划中,計划今年收購土药972万斤,比去年翻一番,其中支援地方工業品种仅知母、玉竹、蒼朮三种,即达430万斤。同时要把野生药材加口黄芪、口防風,牛子等享有很大声望的地道药材进行野生变
MVB-12, a Fourth Subunit of Metazoan ESCRT-I, Functions in Receptor Downregulation  [PDF]
Anjon Audhya, Ian X. McLeod, John R. Yates, Karen Oegema
PLOS ONE , 2007, DOI: 10.1371/journal.pone.0000956
Abstract: After ligand binding and endocytosis, cell surface receptors can continue to signal from endosomal compartments until sequestered from the cytoplasm. An important mechanism for receptor downregulation in vivo is via the inward budding of receptors into intralumenal vesicles to form specialized endosomes called multivesicular bodies (MVBs) that subsequently fuse with lysosomes, degrading their cargo. This process requires four heterooligomeric protein complexes collectively termed the ESCRT machinery. In yeast, ESCRT-I is a heterotetrameric complex comprised of three conserved subunits and a fourth subunit for which identifiable metazoan homologs were lacking. Using C. elegans, we identify MVB-12, a fourth metazoan ESCRT-I subunit. Depletion of MVB-12 slows the kinetics of receptor downregulation in vivo, but to a lesser extent than inhibition of other ESCRT-I subunits. Consistent with these findings, targeting of MVB-12 to membranes requires the other ESCRT-I subunits, but MVB-12 is not required to target the remaining ESCRT-I components. Both endogenous and recombinant ESCRT-I are stable complexes with a 1:1:1:1 subunit stoichiometry. MVB-12 has two human homologs that co-localize and co-immunoprecipitate with the ESCRT-I component TSG101. Thus, MVB-12 is a conserved core component of metazoan ESCRT-I that regulates its activity during MVB biogenesis.
一种新型的MVB非周期信息优化调度策略
A new MVB aperiodic information optimization scheduling policy
 [PDF]

张淞珲,于跃,顾宏
- , 2015, DOI: 10.7511/dllgxb201505014
Abstract: 多功能车辆总线(MVB)是列车上通用的内部通信网络总线,对实时性有较高要求.通过分析MVB非周期信息的通信机制和调度策略,针对非周期信息存在仲裁延时的状况,提出了一种新的非周期信息调度策略,避免了仲裁过程.并将设备优先级加入信息模型中,保证紧急非周期信息的优先发送.案例仿真计算分析表明,所提调度策略能有效提高网络总线的实时性,在不同设备数的条件下优势明显.与其他方法比较,在同设备多待发信息的情况下可以有效减小信息的最大响应时间,保证非周期信息的实时性.
Multifunction vehicle bus (MVB) is universal internal communication network bus on the train with a higher real-time requirement. By analyzing the communication mechanisms and scheduling policies of MVB aperiodic information, it is found that there exists an arbitration delay in the aperiodic information. To avoid the arbitration process, a new aperiodic information scheduling policy is proposed. And device priority is added to information model to ensure the sending priority of urgent aperiodic information. Through the case simulation analyses, it is proved that the proposed scheduling policy can improve the real-time of network bus, and under the conditions of different number of devices, the advantages are obvious. Compared to other methods with multiple outgoing information existing in the same device, this method can effectively reduce the maximum response time of information to ensure real-time of aperiodic information.
基于Pareto蚁群算法的MVB周期轮询表优化设计
Optimization design of MVB period polling table based on Pareto ant colony algorithm
 [PDF]

范超,于跃,顾宏
- , 2015, DOI: 10.7511/dllgxb201503014
Abstract: 合理的多功能车辆总线(MVB)周期轮询表有助于均衡网络负荷、提高网络处理偶发信息的能力、保证实时通信的可靠性.为此提出一种有效的轮询表设计方法.将MVB周期轮询表的设计抽象成离散优化问题,根据IEC 61375-1国际标准和可调度性要求建立约束条件,将均匀度和相邻基本周期时间差作为优化目标,利用Pareto蚁群(Pareto ant colony, P-AC) 算法求解.每个优化目标对应自己的信息素,信息素采用蚁群系统的规则更新,总信息素由两者加权得到,非劣解基于拥挤距离方法维护.与已有的优化算法相比,Pareto蚁群算法优化得到的轮询表均匀度更好,能够更有效地均衡网络负荷.
Good multifunction vehicle bus (MVB) period polling table contributes to balancing the network load and improving the ability of network processing sporadic messages, which can ensure the reliability of the real time communication. An effective polling table design method is proposed. The design of the MVB period polling table is abstracted into a discrete optimization problem. Constraints are obtained according to the IEC 61375-1 international standard and request of schedulability. The optimal objective consists of uniformity and adjacent basic period time interval. The solution is achieved by Pareto ant colony algorithm. In this algorithm, every objective has updated its own pheromone independently by rule of the ant colony system algorithm and the total pheromone is calculated by weighted summation of the two pheromones. The non-dominated solutions sets are maintained by the crowding distance method in this multi-objective problem. The experimental results show that the Pareto ant colony algorithm can perform better than the existing algorithms in uniformity and balancing the network load.
Risk Limiting Dispatch with Ramping Constraints  [PDF]
Junjie Qin,Baosen Zhang,Ram Rajagopal
Mathematics , 2013,
Abstract: Reliable operation in power systems is becoming more difficult as the penetration of random renewable resources increases. In particular, operators face the risk of not scheduling enough traditional generators in the times when renewable energies becomes lower than expected. In this paper we study the optimal trade-off between system and risk, and the cost of scheduling reserve generators. We explicitly model the ramping constraints on the generators. We model the problem as a multi-period stochastic control problem, and we show the structure of the optimal dispatch. We then show how to efficiently compute the dispatch using two methods: i) solving a surrogate chance constrained program, ii) a MPC-type look ahead controller. Using real world data, we show the chance constrained dispatch outperforms the MPC controller and is also robust to changes in the probability distribution of the renewables.
不完全的再领域化与大都市区行政区划重组——以南京市江宁撤县设区为例  [PDF]
罗小龙,殷洁,田冬
地理研究 , 2010, DOI: 10.11821/yj2010100003
Abstract: 从再领域化的理论视角对南京市江宁撤县设区的大都市区行政区划调整进行实证研究。研究重点关注城市和政府两类领域机构,从行政区划调整过程、行政区划调整对城市发展的影响和行政区划调整中的权力斗争三个方面进行分析。研究发现城市空间重组是一个渐进过程,江宁通过撤县设区和撤乡镇设街道两种方式,正在逐步从县域经济向城区经济转型。撤县设区后,江宁城市和经济快速发展,这主要是由于再领域化后江宁相对独立的经济和政治地位。但是,在江宁的再领域化中,政府领域重构并未伴随着城市空间的产生而出现,原县的管理体制在很大程度上仍然得以保留。在新的城市空间中出现了新市—区两级政府管理与原市—县—镇三级政府管理并行的体制。因此,江宁的再领域化是一种不完全的再领域化过程。这也是造成市—区两级政府权利冲突的制度根源。
Risk Limiting Dispatch with Fast Ramping Storage  [PDF]
Junjie Qin,Han-I Su,Ram Rajagopal
Mathematics , 2012,
Abstract: Risk Limiting Dispatch (RLD) was proposed recently as a mechanism that utilizes information and market recourse to reduce reserve capacity requirements, emissions and achieve other system operator objectives. It induces a set of simple dispatch rules that can be easily embedded into the existing dispatch systems to provide computationally efficient and reliable decisions. Storage is emerging as an alternative to mitigate the uncertainty in the grid. This paper extends the RLD framework to incorporate fast-ramping storage. It developed a closed form threshold rule for the optimal stochastic dispatch incorporating a sequence of markets and real-time information. An efficient algorithm to evaluate the thresholds is developed based on analysis of the optimal storage operation. Simple approximations that rely on continuous-time approximations of the solution for the discrete time control problem are also studied. The benefits of storage with respect to prediction quality and storage capacity are examined, and the overall effect on dispatch is quantified. Numerical experiments illustrate the proposed procedures.
Queue-Dispatch Asynchronous Systems  [PDF]
Gilles Geeraerts,Alexander Heu?ner,Jean-Fran?ois Raskin
Computer Science , 2012,
Abstract: To make the development of efficient multi-core applications easier, libraries, such as Grand Central Dispatch, have been proposed. When using such a library, the programmer writes so-called blocks, which are chunks of codes, and dispatches them, using synchronous or asynchronous calls, to several types of waiting queues. A scheduler is then responsible for dispatching those blocks on the available cores. Blocks can synchronize via a global memory. In this paper, we propose Queue-Dispatch Asynchronous Systems as a mathematical model that faithfully formalizes the synchronization mechanisms and the behavior of the scheduler in those systems. We study in detail their relationships to classical formalisms such as pushdown systems, Petri nets, fifo systems, and counter systems. Our main technical contributions are precise worst-case complexity results for the Parikh coverability problem for several subclasses of our model.
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