Modern electronic systems solve so many difficult problems that they often seem like magic. Nonetheless, these systems all have thesame basic limitation: they need a source of electrical power! Most of the time this is a straightforward challenge for the electronicdesigner, because there are many power-delivery solutions. Yet sometimes a device has no direct power source, and running wiresor replacing batteries is impractical. Even when long-life batteries are usable, they eventually need to be replaced, which requires aservice call.
標簽： 能量收集
上傳時間： 2015-01-03
上傳用戶：zukfu
ACPR (adjacent channel power ratio), AltCPR (alternatechannel power ratio), and noise are important performancemetrics for digital communication systems thatuse, for example, WCDMA (wideband code division multipleaccess) modulation. ACPR and AltCPR are bothmeasures of spectral regrowth. The power in the WCDMAcarrier is measured using a 5MHz measurement bandwidth;see Figure 1. In the case of ACPR, the total powerin a 3.84MHz bandwidth centered at 5MHz (the carrierspacing) away from the center of the outermost carrier ismeasured and compared to the carrier power. The resultis expressed in dBc. For AltCPR, the procedure is thesame, except we center the measurement 10MHz awayfrom the center of the outermost carrier.
上傳時間： 2013-11-02
上傳用戶：maricle
Features • Compatible with MCS-51® Products • 8K Bytes of In-System Programmable (ISP) Flash Memory – Endurance: 1000 Write/Erase Cycles • 4.0V to 5.5V Operating Range • Fully Static Operation: 0 Hz to 33 MHz • Three-level Program Memory Lock • 256 x 8-bit Internal RAM • 32 Programmable I/O Lines • Three 16-bit Timer/Counters • Eight Interrupt Sources • Full Duplex UART Serial Channel • Low-power Idle and Power-down Modes • Interrupt Recovery from Power-down Mode • Watchdog Timer • Dual Data Pointer • Power-off Flag
標簽： 8226 Programmable Compatible In-System
上傳時間： 2015-06-27
上傳用戶：dianxin61
Abstract The Lucene Server project is an attempt to extend the Jakarta Lucene tool with server capabilities. Lucene is a robust Java API that enables you creating indexes from text sources and perform powerful searches on these indexes. With Lucene, creating an index must be done programmatically and there are almost no possibilities of integrating index management in a distributed environment. In other words, out of the box, Lucene is suitable for integrating indexing and searching possibilities in a single application but not for providing index/search services for multiple applications. The Lucene Server project comes with a Java API that propose the following make it easy to create indexes in a declarative way by simply providing an XML configuration document. make it easy to personalize the way Lucene must handle different kind of data sources. provide services for index management and searching that can be accessed from several applications. enable batch tasks scheduling.
標簽： Lucene Abstract Jakarta project
上傳時間： 2016-01-10
上傳用戶：songrui
這個是用VC++實現的winsnmp的網絡管理兼監控的程序，經調試可正常運行通過，希望對大家有所幫助 -this the VC winsnmp network management and monitoring procedures, The tests can be run through the normal, we hope to help
上傳時間： 2013-12-14
上傳用戶：AbuGe
這個是用VC++實現的winsnmp的網絡管理兼監控的程序，經調試可正常運行通過，希望對大家有所幫助 -this the VC winsnmp network management and monitoring procedures, The tests can be run through the normal, we hope to help
上傳時間： 2013-12-19
上傳用戶：gundan
用VC和SQL Server開發的固定資產管理系統，包括系統信息管理，固定資產管理和統計查詢管理三個大模塊-VC and SQL Server development of the fixed asset management system, including system information management, fixed asset management and statistics for the three management module
上傳時間： 2016-06-29
上傳用戶：SimonQQ
SD card controller can just read data using 1 bit SD mode. I have written this core for NIOS2 CPU, Cyclone, but I think it can works with other FPGA or CPLD. Better case for this core is SD clock = 20 MHz and CPU clock = 100 MHz (or in the ratio 1:5). If you have a wish you can achieve this core. Good luck
標簽： controller written NIOS2 using
上傳時間： 2016-08-12
上傳用戶：王楚楚
包括使用修正Gram-Schmit算法實現QR分解，自編LU分解、利用冪法和反冪法計算矩陣最大和最小特征值的程序。例外附有使用這些算法的例子供參考。 QR decomposition algorithm based on modified Gram-Schmit LU decomposition algorithm algorithm used to find maximum and minimum eigenvalue based on power and inverse power method and some examples are also included.
標簽： Gram-Schmit 正 分解 算法
上傳時間： 2016-09-07
上傳用戶：cooran
Aspect-Oriented Software Developement Coverage includes Using AOSD to streamline complex systems development without sacrificing flexibility or scalability How AOSD builds on the object-oriented paradigmand how it s different State-of-the-art best practices for the AOSD development process Languages and foundations: separating concerns, filter technologies, improving modularity, integrating new features, and more Using key AOSD tools, including AspectJ, Hyper/J, JMangler, and Java Aspect Components Engineering aspect-oriented systems: UML, concern modeling and elaboration, dependency management, and aspect composition Developing more secure applications with AOSD techniques Applying aspect-oriented programming to database systems Building dynamic aspect-oriented infrastructure
標簽： Aspect-Oriented Developement streamline Software
上傳時間： 2013-12-01
上傳用戶：jennyzai
