SQL Performance Tuning is a handbook of practical solutions for busy database professionals charged with managing an organization s critically important data. Covering today s most popular and widely installed database environments, this book is an indispensable resource for managing and tuning SQL across multiple platforms.
標(biāo)簽： professionals Performance practical solutions
上傳時(shí)間： 2013-12-20
上傳用戶：jjj0202
Guided vehicles (GVs) are commonly used for the internal transportation of loads in warehouses, production plants and terminals. These guided vehicles can be routed with a variety of vehicle dispatching rules in an attempt to meet performance criteria such as minimizing the average load waiting times. In this research, we use simulation models of three companies to evaluate the performance of several real-time vehicle dispatching rules, in part described in the literature. It appears that there is a clear difference in average load waiting time between the different dispatching rules in the different environments. Simple rules, based on load and vehicle proximity (distance-based) perform best for all cases. The penalty for this is a relatively high maximum load waiting time. A distance-based rule with time truncation, giving more priority to loads that have to wait longer than a time threshold, appears to yield the best possible overall performance. A rule that particularly considers load-waiting time performs poor overall. We also show that using little pre-arrival information of loads leads to a significant improvement in the performance of the dispatching rules without changing their performance ranking.
標(biāo)簽： Testing and classifying vehicle dispatching rules in three real-world settings
上傳時(shí)間： 2016-04-01
上傳用戶：五塊錢的油條
對(duì)[1]的matlab實(shí)現(xiàn)，有所改動(dòng)，在計(jì)算新的點(diǎn)是否屬于平面時(shí)用點(diǎn)到平面的距離替換MSE，親測精度不變計(jì)算時(shí)間大大減少。 referenece [1]Junhao Xiao, Jianhua Zhang and Jianwei Zhang，'Fast Plane Detection for SLAM from Noisy Range Images in Both Structured and Unstructured environments',IEEE International Conference on Mechatronics & Automation,2011:1768-1773
標(biāo)簽： matlab 平面提取算法 點(diǎn)云數(shù)據(jù)
上傳時(shí)間： 2016-06-01
上傳用戶：李先生的大香港
Accurate pose estimation plays an important role in solution of simultaneous localization and mapping (SLAM) problem, required for many robotic applications. This paper presents a new approach called R-SLAM, primarily to overcome systematic and non-systematic odometry errors which are generally caused by uneven floors, unexpected objects on the floor or wheel-slippage due to skidding or fast turns.The hybrid approach presented here combines the strengths of feature based and grid based methods to produce globally consistent high resolution maps within various types of environments.
標(biāo)簽： localization environments challenging Resilient mapping R-SLAM and in
上傳時(shí)間： 2019-09-15
上傳用戶：zhudx2007
This book examines the technologies underlying the compression and trans- mission of digital video sequences over networking platforms. The incorporated study covers a large spectrum of topics related to compressed video communica- tions. It presents to readers a comprehensive and structured analysis of the issues encountered in the transmission of compressed video streams over networking environments.
標(biāo)簽： Compressed Video Communications
上傳時(shí)間： 2020-05-26
上傳用戶：shancjb
This book is intended to help electric power and telephone company personnel and individuals interested in properly protecting critical tele- communications circuits and equipment located in high voltage (HV) environments and to improve service reliability while maintaining safe working conditions. Critical telecommunications circuits are often located in HV environments such as electric utility power plants, substations, cell sites on power towers, and standalone telecommuni- cations facilities such as 911 call centers and mountaintop telecom- munications sites.
標(biāo)簽： Protection Voltage High
上傳時(shí)間： 2020-05-27
上傳用戶：shancjb
The following sections profile many of the vendors in the NFV market. The individual profiles were created through a collaborative effort between SDNCentral’s Research Team and the Vendor’s product experts. SDNCentral worked under the assumption the information provided by the vendors was factual, auditing the submissions only to remove unverifiable claims and hyperbole. Extended profiles can be viewed online. While every attempt has been made to validate the capabilities listed in the profiles, SDNCentral advises end users to verify the veracity of each claim for themselves in their actual deployment environments. SDNCentral cannot be held liable for unexpected operations, damages or incorrect operation due to any inaccuracies listed here. SDNCentral welcomes feedback and additional information from end users based on their real-world experiences with the products and technologies listed. The SDNCentral research team can be reached at
標(biāo)簽： SDxCentral-Mega-NFV-Report
上傳時(shí)間： 2020-06-01
上傳用戶：shancjb
Since electronic equipment was first developed, static electricity has been a source of problems for users and designers. In the last few years, however, electrostatic discharge (ESD) has become a source of major problems. This has occurred because newer electronic devices, such as integrated circuits, are much more susceptible to ESD problems than previous devices, such as vacuum tubes. Another trend compounding this ESD susceptibility problem is the spread of sophisticated equipment into home and office environments where ESD is quite common.
標(biāo)簽： Electronic Equipment ESD and
上傳時(shí)間： 2020-06-05
上傳用戶：shancjb
Many applications have required the positioning accuracy of a Global Navigation Satellite System (GNSS). Some applications exist in environments that attenuate GNSS signals, and, consequently, the received GNSS signals become very weak. Examplesofsuchapplicationsarewirelessdevicepositioning,positioninginsensor networks that detect natural disasters, and orbit determination of geostationary and high earth orbit (HEO) satellites. Conventional GNSS receivers are not designed to work with weak signals. This book presents novel GNSS receiver algorithms that are designed to work with very weak signals.
標(biāo)簽： Receivers Signals GNSS Weak for
上傳時(shí)間： 2020-06-09
上傳用戶：shancjb
首先下載軟件，解壓軟件，安裝在程序中找到SEGGER,選里面的J-FLASH，進(jìn)入界面，剛開始的那個(gè)界面可以忽略，不用建project也可以；單擊菜單欄的“Options---Project settings”打開設(shè)置，進(jìn)行jlink配置;正在General選項(xiàng)，選擇“USB”，一般都是默認(rèn)配置，確認(rèn)一下即可;然后在CPU選項(xiàng)，選擇芯片型號(hào)，先選擇“Device”才能選擇芯片型號(hào)，芯片型號(hào)，要根據(jù)你使用的芯片進(jìn)行選擇;在Target interface選項(xiàng) 里面選擇SWD模式;首先Target里面選“Connection”連接目標(biāo)芯片，然后 Target--Auto進(jìn)行程序燒寫;首先Target里面選擇“Connection”連接目標(biāo)芯片，然后 Target--Auto進(jìn)行程序燒寫.SEGGER J-Links are the most widely used line of debug probes available today. They've proven their value for more than 10 years in embedded development. This popularity stems from the unparalleled performance, extensive feature set, large number of supported CPUs, and compatibility with all popular development environments.
標(biāo)簽： JLINK
上傳時(shí)間： 2022-03-22
上傳用戶：
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