Expert Oracle Indexing and Access Paths Strategies for Optimal Performance
Speed up the execution of important database queries by making good choices about which indexes to create. Choose the correct index types for different scenarios. Avoid indexing pitfalls that can actually have indexes hurting performance rather than helping. Maintain indexes to provide consistent and predictable query response over the lifetime of an application. Expert Oracle Indexing and Access Paths focuses on the one database structure at the heart of almost all performance concerns: the index. Database system performance is one of the top concerns in information technology today. Administrators struggle to keep up with the explosion of access and activity driven by the proliferation of computing into everything from phones to tablets to PCs in our increasingly connected world. At the heart of any good-performing database lies a sound indexing strategy that makes appropriate use of indexing, especially the vendor-specific indexing features on offer.
Oracle
0
2024-11-04
LQG Active Suspension Control Stochastic Linear Optimal Control Approach
在研究LQG主动悬架控制过程中,学习了Matlab的基本使用方法和Simulink的仿真过程。该过程对于理解LQG主动悬架控制的应用至关重要,能够有效提高悬架系统的动态响应性和舒适性。
希望通过本帖能够帮助大家更好地理解该控制方法,同时提供一个讨论和学习的平台。 :victory: ——车行南粤的小明哥~新浪围脖
Matlab
0
2024-11-05
Nash Equilibrium MATLAB Code for Femto-Power Control in CDMA Networks
纳什均衡 MATLAB 代码用于解决两层封闭式接入毫微小区网络的上行链路中的有效功率分配问题。假设有单个CDMA宏小区,其中N个毫微小区驻留在宏小区内。本框架支持多种服务,采用合适的效用函数反映用户对实际吞吐量和相应功率的满意度。整个问题被表述为非合作游戏,用户自私地致力于最大化其基于效用的性能,同时考虑到CDMA宏小区及邻近毫微小区造成的干扰。证明了拟议的多业务定价两层功率控制博弈(MTTPG)的纳什均衡点的存在和唯一性,所有用户达到目标SINR阈值或以最大功率进行传输,导致SINR平衡系统。此外,提供了一种用于达到MTTPG游戏平衡的分布式迭代算法。通过建模和仿真评估所提出方法的操作有效性,展示了其在各种场景下的优越性。该代码非常灵活,允许在宏单元内创建任意数量的FAPS(毫微微接入点)并随机放置宏用户和非实时宏用户。
Matlab
0
2024-11-04
Oracle SQL Performance Tuning Strategies
在Oracle数据库中,进行SQL性能调优可以从多个方面入手:
语句级调优:优化SQL语句的结构,减少不必要的计算和数据处理。
表关联优化:选择合适的关联顺序,避免全表扫描,提高查询效率。
索引使用:合理创建和维护索引,确保查询能有效利用索引。
CBO(成本基础优化器):利用CBO生成执行计划,确保选择最优的执行路径。
RBO(规则基础优化器):在必要时使用RBO,特别是在较旧的系统中,确保查询性能。
Oracle
0
2024-11-04
optimal-state-estimation-errata
Optimal State Estimation Errata
In the realm of optimal state estimation, several key updates and corrections have been identified. It is crucial to pay attention to these errata for ensuring accurate modeling and estimation. The most common issues relate to incorrect assumptions about system dynamics and observation models, as well as the application of certain algorithms in specific scenarios. Understanding these nuances will significantly improve the precision of state estimation techniques.
Key Points:
State Representation: Ensure that the state variables correctly represent the system's underlying physical behavior.
Error Propagation: Update the error models used in estimation to reflect real-world noise and disturbances.
Algorithmic Adjustments: Be mindful of the specific algorithm's limitations and optimize based on system requirements.
By addressing these errata, practitioners can improve the performance of state estimation in complex environments.
Matlab
0
2024-11-06
POWER CENTER资料
提供 Informatica PowerCenter ETL 学习所需资料。
Hadoop
2
2024-05-15
Feedback Control Systems MATLAB Implementation and Control System Toolbox
书名:《反馈控制问题:使用MATLAB及其控制系统工具箱》作者:【美】迪安.K.弗雷德里克、乔.H.周、张彦斌译、韩崇昭审校出版社:西安交通大学出版社ISBN:7-5605-1429-4
介绍:本书基本上与自控教材对应,主要讲MATLAB实现。如果你是个动手实干的人,那么本书适合你。书中内容涵盖了:- 传递函数、基于传递函数的各种响应- 方框图、状态空间模型- 根轨迹、频域分析、系统性能分析- PID控制、频率响应设计、状态空间设计
书中的内容侧重于通过MATLAB进行实现,理论部分并不多。
Matlab
0
2024-11-06
Power Designer 16.1.0.3637 破解
Power Designer 16.1.0.3637 最新破解版,稳定性较 16.0 版本大幅提升。
Sybase
3
2024-05-13
OMP_Algorithm_Optimal_Solution_In_Sparse_Representation_MATLAB
OMP算法(MATLAB)稀疏表示中用来求最优解。这个方法相对较好,并提供了相关的demo。
Matlab
0
2024-11-01