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.
標簽: professionals Performance practical solutions
上傳時間: 2013-12-20
上傳用戶:jjj0202
This report presents a tutorial of fundamental array processing and beamforming theory relevant to microphone array speech processing. A microphone array consists of multiple microphones placed at different spatial locations. Built upon a knowledge of sound propagation principles, the multiple inputs can be manipulated to enhance or attenuate signals emanating from particular directions. In this way, microphone arrays provide a means of enhancing a desired signal in the presence of corrupting noise sources. Moreover, this enhancement is based purely on knowledge of the source location, and so microphone array techniques are applicable to a wide variety of noise types. Microphone arrays have great potential in practical applications of speech processing, due to their ability to provide both noise robustness and hands-free signal acquisition.
標簽: Microphone array Tutorial Array Signal Processing
上傳時間: 2016-06-12
上傳用戶:halias
evolution computing 現在最火的一篇論文 Handling Multiple Objectives With Particle Swarm Optimization
上傳時間: 2016-07-01
上傳用戶:白水煮瓜子
msp430The LDC1312 and LDC1314 are 2- and 4-channel, 1? Easy-to-use – minimal configuration required 12-bit inductance to digital converters (LDCs) for ? Measure up to 4 sensors with one IC inductive sensing solutions. With multiple channels ? Multiple channels support environmental and and support for remote sensing, the LDC1312 and aging compensation LDC1314 enable the performance and reliability benefits of inductive sensing to be realized at minimal? Multi-channel remote sensing provides lowest cost and power. The products are easy to use, onlysystem cost requiring that the sensor frequency be within 1 kHz ? Pin-compatible medium and high-resolution and 10 MHz to begin sensing. The wide 1 kHz to 10 options MHz sensor frequency range also enables use of very small PCB coils, further reducing sensing– LDC1312/4: 2/4-ch 12-bit LDC solution cost and size.– LDC1612/4: 2/4-ch 28
上傳時間: 2016-07-22
上傳用戶:tongmoonsky
V1.16 Win32 July 2012 - Ported to Win32 C++ - Allow multiple instances of libnids to coexist in the same process - Incorporate unofficial patch to track established TCP connections - Migration of calls to secure versions (i.e. strcpy to strcpy_s) - Compiles under Visual Studio 2010 with no warnings at W4 - Linux support well and truly broken, Linux specific code removed
標簽: libnids-Win32
上傳時間: 2016-07-30
上傳用戶:mxgg126
We consider the problem of target localization by a network of passive sensors. When an unknown target emits an acoustic or a radio signal, its position can be localized with multiple sensors using the time difference of arrival (TDOA) information. In this paper, we consider the maximum likelihood formulation of this target localization problem and provide efficient convex relaxations for this nonconvex optimization problem.We also propose a formulation for robust target localization in the presence of sensor location errors. Two Cramer-Rao bounds are derived corresponding to situations with and without sensor node location errors. Simulation results confirm the efficiency and superior performance of the convex relaxation approach as compared to the existing least squares based approach when large sensor node location errors are present.
標簽: 傳感器網絡
上傳時間: 2016-11-27
上傳用戶:xxmluo
產品品牌:VINTEK/元泰/VINKA —— -原廠直銷,樣品免費,技術支持,大量現貨! 產品型號:VK3809IP 封裝形式:SOP16貼片 產品年份:新年份 聯 系 人:許先生 聯 系 QQ:1918885898 聯系手機:18898582398 原廠直銷觸摸觸控感應芯片,多種形式選擇更專業,原裝正品保障,價格更具優勢! 概述 VK3809IP 是一款9感應通道高抗干擾的觸摸IC,工作電壓:2.5V-5.5V,工作電流:1.1MA-3V,IIC/INT通訊口。可設置為9個獨立按鍵或者最多3組滑條,可通過IIC設置工作模式和參數,可以通過CAP腳電容調節靈敏度。封裝是SOP16。應用于大小家電,門禁監控和消費類電子。 ★軟件簡介: 此軟件系提供給客戶一個簡易設定的滑條按鍵應用方案。客戶只要使用 IIC 通訊格式,即可設定并讀取滑條按鍵及獨立按鍵觸摸數據。 特色 : 1.此應用使用 16 個 Touch Pad 讓客戶可依照設計上的需求進行規劃。16 個 Touch PAD 可規劃為滑條按鍵或是獨立按鍵,滑條多可規劃為 3 組滑條。當無滑條按鍵設定時,16 Key 都可做獨立按鍵使用。 2.修改設定參數的方式有兩種,用戶可配合 USB PCLink Board 來調整滑條按鍵 觸摸靈敏度等參數,然后利用 IIC 寫入指令來修改設定參數。 3.程序的獨立按鍵輸出模式有兩種 Multiple 以及 Single,當選則為Multiple 時會將所有按下的按鍵輸出,而選擇 Single 時只會輸出第一個按下的按鍵,當按鍵被放開時,才會輸出下一個按鍵。 4.設計有省電模式,適合用在如遙控器等需要長時間待機的應用。 5.有 4 組 Slave address,可由外部開關切換。 產品應用范圍: 大小家電 門禁監控設備 消費類電子 ●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●● 產品品牌:VINTEK/元泰/VINKA —— -原廠直銷,樣品免費,技術支持,大量現貨! 產品型號:VK3813IP 封裝形式:SSOP20貼片 產品年份:新年份 聯 系 人:許先生 聯 系 QQ:1918885898 聯系手機:18898582398 原廠直銷觸摸觸控感應芯片,多種形式選擇更專業,原裝正品保障,價格更具優勢! 概述 VK3813IP 是一款13感應通道高抗干擾的觸摸IC,工作電壓:2.5V-5.5V,工作電流:1.1MA-3V,IIC/INT通訊口。可設置為13個獨立按鍵或者最多3組滑條,可通過IIC設置工作模式和參數,可以通過CAP腳電容調節靈敏度。封裝是SSOP20。應用于大小家電,門禁監控和消費類電子。 特色 : 1. 此應用使用 13 個 Touch Pad 讓客戶可依照設計上的需求進行劃。13 個 Touch PAD 可規劃為滑條按鍵或是獨立按鍵,滑條多可規劃為 3 組滑條。當無滑條按鍵設定時,13 Key 都可做獨立按鍵使用。 2.修改設定參數的方式有兩種,用戶可配合 USB PCLink Board 來調整滑條按鍵觸摸靈敏度等參數,然后利用 IIC 寫入指令來修改設定參數。 3.程序的獨立按鍵輸出模式有兩種 Multiple 以及 Single,當選則為Multiple 時會將所有按下的按鍵輸出,而選擇 Single 時只會輸出第一個按下的按鍵,當按鍵被放開時,才會輸出下一個按鍵。 4. 設計有省電模式,適合用在如遙控器等需要長時間待機的應用。 產品應用范圍: 大小家電 門禁監控設備和消費類電子 ●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●● 產品品牌:VINTEK/元泰/VINKA —— -原廠直銷,樣品免費,技術支持,大量現貨! 產品型號:VK3816IP 封裝形式:SSOP28貼片 產品年份:新年份 聯 系 人:許先生 聯 系 QQ:1918885898 聯系手機:18898582398 原廠直銷觸摸觸控感應芯片,多種形式選擇更專業,原裝正品保障,價格更具優勢! 概述 VK3816IP 是一款16感應通道高抗干擾的觸摸IC,工作電壓:2.5V-5.5V,工作電流:1.1MA-3V,IIC/INT通訊口。可設置為16個獨立按鍵或者最多3組滑條,IIC設備地址可通過2個輸入腳設置,可通過IIC設置工作模式和參數,可以通過CAP腳電容調節靈敏度。封裝是SSOP28。應用于大小家電,門禁監控和消費類電子。 特色 : 1. 此應用使用 16 個 Touch Pad 讓客戶可依照設計上的需求進行規劃。16 個 Touch PAD 可規劃為滑條按鍵或是獨立按鍵,滑條多可規劃為 3 組滑條。當無滑條按鍵設定時,16 Key 都可做獨立按鍵使用。 2. 修改設定參數的方式有兩種,用戶可配合 USB PCLink Board 來調整滑條按鍵觸摸靈敏度等參數,然后利用 IIC 寫入指令來修改設定參數。 3. 程序的獨立按鍵輸出模式有兩種 Multiple 以及 Single,當選則為Multiple 時會將所有按下的按鍵輸出,而選擇 Single 時只會輸出第一個按下的按鍵,當按鍵被放開時,才會輸出下一個按鍵。 4. 設計有省電模式,適合用在如遙控器等需要長時間待機的應用。 5. 有 4 組 Slave address,可由外部開關切換。 產品應用范圍: 大小家電門 禁監控設備 消費類電子
上傳時間: 2018-12-12
上傳用戶:shubashushi66
產品品牌:VINTEK/元泰/VINKA —— -原廠直銷,樣品免費,技術支持,大量現貨! 產品型號:VK3813IP 封裝形式:SSOP20貼片 產品年份:新年份 聯 系 人:許先生 聯 系 QQ:1918885898 聯系手機:18898582398 原廠直銷觸摸觸控感應芯片,多種形式選擇更專業,原裝正品保障,價格更具優勢! 概述 VK3813IP 是一款13感應通道高抗干擾的觸摸IC,工作電壓:2.5V-5.5V,工作電流:1.1MA-3V,IIC/INT通訊口。可設置為13個獨立按鍵或者最多3組滑條,可通過IIC設置工作模式和參數,可以通過CAP腳電容調節靈敏度。封裝是SSOP20。應用于大小家電,門禁監控和消費類電子。 特色 : 1. 此應用使用 13 個 Touch Pad 讓客戶可依照設計上的需求進行劃。13 個 Touch PAD 可規劃為滑條按鍵或是獨立按鍵,滑條多可規劃為 3 組滑條。當無滑條按鍵設定時,13 Key 都可做獨立按鍵使用。 2.修改設定參數的方式有兩種,用戶可配合 USB PCLink Board 來調整滑條按鍵觸摸靈敏度等參數,然后利用 IIC 寫入指令來修改設定參數。 3.程序的獨立按鍵輸出模式有兩種 Multiple 以及 Single,當選則為Multiple 時會將所有按下的按鍵輸出,而選擇 Single 時只會輸出第一個按下的按鍵,當按鍵被放開時,才會輸出下一個按鍵。 4. 設計有省電模式,適合用在如遙控器等需要長時間待機的應用。 產品應用范圍: 大小家電 門禁監控設備和消費類電子
標簽: 高抗干擾 觸摸芯片
上傳時間: 2018-12-12
上傳用戶:shubashushi66
Smart Grids provide many benefits for society. Reliability, observability across the energy distribution system and the exchange of information between devices are just some of the features that make Smart Grids so attractive. One of the main products of a Smart Grid is to data. The amount of data available nowadays increases fast and carries several kinds of information. Smart metres allow engineers to perform multiple measurements and analyse such data. For example, information about consumption, power quality and digital protection, among others, can be extracted. However, the main challenge in extracting information from data arises from the data quality. In fact, many sectors of the society can benefit from such data. Hence, this information needs to be properly stored and readily available. In this chapter, we will address the main concepts involving Technology Information, Data Mining, Big Data and clustering for deploying information on Smart Grids.
標簽: Processing Cities Smart Data in
上傳時間: 2020-05-23
上傳用戶:shancjb
Smart Grids provide many benefits for society. Reliability, observability across the energy distribution system and the exchange of information between devices are just some of the features that make Smart Grids so attractive. One of the main products of a Smart Grid is to data. The amount of data available nowadays increases fast and carries several kinds of information. Smart metres allow engineers to perform multiple measurements and analyse such data. For example, information about consumption, power quality and digital protection, among others, can be extracted. However, the main challenge in extracting information from data arises from the data quality. In fact, many sectors of the society can benefit from such data. Hence, this information needs to be properly stored and readily available. In this chapter, we will address the main concepts involving Technology Information, Data Mining, Big Data and clustering for deploying information on Smart Grids.
標簽: Processing Cities Smart Data
上傳時間: 2020-05-25
上傳用戶:shancjb