Much has been written concerning the manner in which healthcare is changing, with a particular emphasis on how very large quantities of data are now being routinely collected during the routine care of patients. The use of machine learning meth- ods to turn these ever-growing quantities of data into interventions that can improve patient outcomes seems as if it should be an obvious path to take. However, the field of machine learning in healthcare is still in its infancy. This book, kindly supported by the Institution of Engineering andTechnology, aims to provide a “snap- shot” of the state of current research at the interface between machine learning and healthcare.
標(biāo)簽： Technologies Healthcare Learning Machine
上傳時間： 2020-06-10
上傳用戶：shancjb
This edition of Digital Image Processing is a major revision of the book. As in the 1977 and 1987 editions by Gonzalez and Wintz, and the 1992, 2002, and 2008 editions by Gonzalez and Woods, this sixth-generation edition was prepared with students and instructors in mind. The principal objectives of the book continue to be to provide an introduction to basic concepts and methodologies applicable to digital image processing, and to develop a foundation that can be used as the basis for further study and research in this field. To achieve these objectives, we focused again on material that we believe is fundamental and whose scope of application is not limited to the solution of specialized problems. The mathematical complexity of the book remains at a level well within the grasp of college seniors and first-year graduate students who have introductory preparation in mathematical analysis, vectors, matrices, probability, statistics, linear systems, and computer programming. The book website provides tutorials to support readers needing a review of this background material
標(biāo)簽： Processing Digital Image
上傳時間： 2021-02-20
上傳用戶：
PCB的工藝流程詳細(xì)資料說明1.開料（CUT）開料是把原始的覆銅板切割成能在生產(chǎn)線上制作的板子的過程 首先我們來了解幾個概念：（1）UNIT：UNIT是指PCB設(shè)計工程師設(shè)計的單元圖形。（2）SET：SET是指工程師為了提高生產(chǎn)效率、方便生產(chǎn)等原因，將多個UNIT拼在一起成為的一個整體的圖形。也就是我們常說的拼板，它包括單元圖形、工藝邊等等。（3）PANEL：PANEL是指PCB廠家生產(chǎn)時，為了提高效率、方便生產(chǎn)等原因，將多個SET拼在一起并加上工具板邊，組成的一塊板子。
上傳時間： 2021-11-08
上傳用戶：
Agilent 34401A Service Guide.pdfIEC Measurement Category II includes electrical devices connected to mains at an outlet on a branch circuit. Such devices include most small appliances, test equipment, and other devices that plug into a branch outlet or socket. The 34401A may be used to make measurements with the HI and LO inputs connected to mains in such devices, or to the branch outlet itself (up to 300 VAC). However, the 34401A may not be used with its HI and LO inputs connected to mains in permanently installed electrical devices such as the main circuit-breaker panel, sub-panel disconnect boxes, or permanently wired motors. Such devices and circuits are subject to overvoltages that may exceed the protection limits of the 34401A. Note: Voltages above 300 VAC may be measured only in circuits that are isolated from mains. However, transient overvoltages are also present on circuits that are isolated from mains. The Agilent 34401A are designed to safely withstand occasional transient overvoltages up to 2500 Vpk. Do not use this equipment to measure circuits where transient overvoltages could exceed this level. Additional Notices Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC This product complies with the WEEE Directive (2002/96/EC) marking requirement. The affixed product label (see below) indicates that you must not discard this electrical/electronic product in domestic household waste. Product Category: With reference to the equipment types in the WEEE directive Annex 1, this product is classified as a "Monitoring and Control instrumentation" product. Do not dispose in domestic household waste. To return unwanted products, contact your local Agilent office, or see www.agilent.com/environment/product for more information. Agilent 34138A Test Lead Set The Agilent 34401A is compatible with the Agilent 34138A Test Lead Set described below. Test Lead Ratings Test Leads - 1000V, 15A Fine Tip Probe Attachments - 300V, 3A Mini Grabber Attachment - 300V, 3A SMT Grabber Attachments - 300V, 3A Operation The Fine Tip, Mini Grabber, and SMT Grabber attachments plug onto the probe end of the Test Leads. Maintenance If any portion of the Test Lead Set is worn or damaged, do not use. Replace with a new Agilent 3413
標(biāo)簽： agilent
上傳時間： 2022-02-20
上傳用戶：
結(jié)構(gòu)體的具體尺寸如下所示：a=1.20h=0.620其中介質(zhì)錐的介電常數(shù)E=2.0。選定工作頻率為f=15GHz相對應(yīng)的真空中的波長為0=20mm，這樣結(jié)構(gòu)體的兒何尺寸己經(jīng)完全確定，下面介紹求解的全過程選定求解方式為（Solution Type）Driven modal1.建立所求結(jié)構(gòu)體的幾何模型（單位：mm）。由于此結(jié)構(gòu)體的幾何形狀較簡單，使用工具欄中的Draw命令可直接畫出，這里不再贅述述。畫出的結(jié)構(gòu)體如圖4.1.2所示。2.充結(jié)構(gòu)體的材料選定結(jié)構(gòu)體中的錐體部分，添加其介電常數(shù)Er=20的介質(zhì)材料注：如果HSS中沒有提供與所需參數(shù)完全相同的材料，用戶可以通過新建材料或修改已有材料，使其參數(shù)滿足用戶需求設(shè)定結(jié)構(gòu)體的邊界條件及其激勵源a.選定結(jié)構(gòu)體的貼片部分，設(shè)定其為理想導(dǎo)體（PerE）。b.畫出尺寸為X×Y×Z=70mm×70mm×40mm的長方體作為輻射邊界，并設(shè)定其邊界條件為輻射邊界條件（Radiation Boundary）。c.由于要求出結(jié)構(gòu)體的RCS，因此設(shè)定激勵源為平面入射波（Incident Wave Source）。如圖4.1.3所示。4.設(shè)定求解細(xì)節(jié)，檢驗并求解a.設(shè)定求解過程的工作頻率為f=15GHz.其余細(xì)節(jié)設(shè)定如圖4.1.4所示。b.設(shè)定遠(yuǎn)區(qū)輻射場的求解（Far Field Radiation Sphere欄的設(shè)定）。c.使用 Validation check命令進(jìn)行檢驗，無錯誤發(fā)生，下一步運行命令 Analyze，對柱錐結(jié)構(gòu)體進(jìn)行求解。如圖4.1.5和4.1.6所示。
上傳時間： 2022-03-10
上傳用戶：
本系統(tǒng)采用電動機電樞供電回路串接采樣電阻的方式來實現(xiàn)對小型直流有刷電動機的轉(zhuǎn)速測量。該系統(tǒng)主要由二階低通濾波電路,小信號放大電路、單片機測量顯示電路、開關(guān)穩(wěn)壓電源電路等組成。同時自制電機測速裝置,用高頻磁環(huán)作為載體,用線圈繞制磁環(huán),利用電磁感應(yīng)原理檢測電機運行時的漏磁,將變化的磁場信號轉(zhuǎn)化為磁環(huán)上的感應(yīng)電流。用信號處理單元電路將微弱電信號轉(zhuǎn)化為脈沖信號,送由單片機檢測,從而達(dá)到準(zhǔn)確測量電機的速度的要求。In this system, the sampling resistance of armature power supply circuit is connected in series to measure the speed of small DC brush motor. The system is mainly composed of second-order low-pass filter circuit, small signal amplifier circuit, single-chip measurement and display circuit, switching regulated power supply circuit and so on. At the same time, the self-made motor speed measuring device uses high frequency magnetic ring as the carrier, coil winding magnetic ring, and electromagnetic induction principle to detect the leakage of magnetic field during the operation of the motor, which converts the changed magnetic field signal into the induced current on the magnetic ring. The weak electric signal is transformed into pulse signal by signal processing unit circuit, which is sent to single chip computer for detection, so as to meet the requirement of accurate measurement of motor speed.
標(biāo)簽： 直流電動機
上傳時間： 2022-03-26
上傳用戶：
以STC12C5A60S2單片機為控制核心,采用2.4G(JF24D)無線遙控模塊進(jìn)行無線發(fā)射與接收,設(shè)計了一種雙電機遙控船模控制系統(tǒng).該系統(tǒng)通過切換檔桿實現(xiàn)前進(jìn)后退,方向盤左右轉(zhuǎn)動、暫停按鈕等控制直流電機的正轉(zhuǎn)、反轉(zhuǎn)、暫停,使得電機驅(qū)動的遙控船模實現(xiàn)前進(jìn)后退、左右轉(zhuǎn)向、暫停等功能,有效解決了驅(qū)動功率小和船模之間相互干擾等問題,可廣泛應(yīng)用于遙控船模領(lǐng)域.Using STC12C5A60S2 single-chip microcomputer as the controller and 2.4 G(JF24D)wireless remote control module for wireless transmission and reception, a dual-motor remote control ship model control system is designed. The system realizes forward and backward by switching the gear lever. The steering wheel rotates left and right and the pause button controls the forward, reverse and pause of the dc motor. The remote controller of ship model driven by the motor realizes forward and backward, left and right steering, pause and other functions. The ship model control system can effectively solve the problems of small driving power and mutual interference between ship models, and can be widely used in the field of remote controller of ship model.
標(biāo)簽： 電機 遙控船模 控制系統(tǒng)
上傳時間： 2022-03-27
上傳用戶：
設(shè)計者根據(jù)對環(huán)境的需求，希望能不斷開拓高級電機控制技術(shù)，用以制造節(jié)能空調(diào)、洗衣機和其他家用電器產(chǎn)品。到目前為止，較為完善的電機控制解決方案通常僅用作專門用途。然而，新一代數(shù)字信號控制器（Digital Signal Controller，DSC）的出現(xiàn)使得性價比高的高級電機控制算法最終成為現(xiàn)實。例如，空調(diào)需要能夠?qū)囟茸鞒隹焖夙憫?yīng)以迅速改變電機的轉(zhuǎn)速。因此，我們需要高級電機控制算法，以制造出更加節(jié)能的靜音設(shè)備。在這種情況下，磁場定向控制（Field Oriented Control，F(xiàn)OC）脫顧而出，成為滿足這些環(huán)境需求的主要方法。本應(yīng)用筆記討論了使用Microchip dsPIC0DSC系列對永磁同步電機（Permanent Magnet Synchronous Motors，PMSM）進(jìn)行無傳感器FOC的算法。為什么使用FOC算法？BLDC電機的傳統(tǒng)控制方法是以一個六步的控制過程來驅(qū)動定子，而這種控制過程會使生成的轉(zhuǎn)矩產(chǎn)生振蕩。在六步控制過程中，給一對繞組通電直到轉(zhuǎn)子達(dá)到下一位置，然后電機換相到下一步。霍爾傳感器用于確定轉(zhuǎn)子的位置，以采用電子方式給電機換相。高級的無傳感器算法使用在定子繞組中產(chǎn)生的反電動勢來確定轉(zhuǎn)子位置。六步控制（也稱為梯形控制）的動態(tài)響應(yīng)并不適用于洗衣機，這是因為在洗滌過程中負(fù)載始終處于動態(tài)變化中，并隨實際洗滌量和選定的洗滌模式不同而變化。而且，對于前開式洗衣機，當(dāng)負(fù)載位于滾筒的頂部時，必須克服重力對電機負(fù)載作功。只有使用高級的算法如FOC才可處理這些動態(tài)負(fù)載變化。
上傳時間： 2022-06-29
上傳用戶：shjgzh
簡介設(shè)計者根據(jù)對環(huán)境的需求，希望能不斷開拓高級電機控制技術(shù)，用以制造節(jié)能空調(diào)、洗衣機和其他家用電器產(chǎn)品。到目前為止，較為完善的電機控制解決方案通常僅用作專門用途。然而，新一代數(shù)字信號控制器（Digital Signal Controller，DSC）的出現(xiàn)使得性價比高的高級電機控制算法最終成為現(xiàn)實。例如，空調(diào)需要能夠?qū)囟茸鞒隹焖夙憫?yīng)以迅速改變電機的轉(zhuǎn)速。因此，我們需要高級電機控制算法，以制造出更加節(jié)能的靜音設(shè)備。在這種情況下，磁場定向控制（Field Oriented Control，F(xiàn)OC）脫穎而出，成為滿足這些環(huán)境需求的主要方法。本應(yīng)用筆記討論了使用Microchip dsPIC2 DSC系列對永磁同步電機（Permanent Magnet Synchronous Motor，PMSM）進(jìn)行無傳感器FOC的算法。
上傳時間： 2022-06-30
上傳用戶：
1. General Description BL-M3362NS1 product is designed base on Broadcom BCM43362 chipset. It operates at 2.4GHz band and supports IEEE802.11b/g/n 1T1Rwith wireless data rate up to 72.2Mbps. It supports IEEE802.11isafety protocol, along with IEEE802.11e standard service quality. It supports standard interfaces SDIOV2.0(50 MHz,4-bit and1-bit) and generic SPI(up to 50 MHz), Integrated ARM Cortex?-M3 CPUwith on-chip memory enables running IEEE802.11 firmware that can be field-upgraded with future features.2. The range of applying Imaging platforms(printers, digital still cameras, digital picture frames)Consumer electronic devices(DTV, DVDplayers, Blu-ray players. etc.)Gaming platforms Carinformation MiFi/Mobile Routes Smart PAD Set-TopBoxes
標(biāo)簽： wifi
上傳時間： 2022-07-04
上傳用戶：
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