An application that adds products to
an electronic shopping cart. The application uses three classes: Product, ShoppingCart, and ShoppingCartApplication. Part of the
work has been done for you and is provided in the student archive. You will
implement the method in ShoppingCartApplication that reads product information from the keyboard and
creates a Product object.
Nature is seldom kind. One of the most appealing uses for radio-
telephone systems—communication with people on the move—must over-
come radio transmission problems so difficult they challenge the imagina-
tion. A microwave radio signal transmitted between a fixed base station
and a moving vehicle in a typical urban environment exhibits extreme
variations in both amplitude and apparent frequency.
Under the Energy Independence and Security Act of 2007 (EISA), the National Institute of
Standards and Technology (NIST) was assigned “primary responsibility to coordinate
development of a framework that includes protocols and model standards for information
management to achieve interoperability of Smart Grid devices and systems…” [EISA Section
1305]. 35 This responsibility comes at a time when the electric power grid and electric power
industry are undergoing the most dramatic transformation in many decades. Very significant
investments are being made by industry and the federal government to modernize the power grid.
To realize the full benefits of these investments—and the continued investments forecast for the
coming decades—there is a continued need to establish effective smart grid 36 standards and
protocols for interoperability.
Introduction to Radio Frequency Identification (RFID): RFID is a
wireless modulation and demodulation technique for automatic
identification of objects, tracking goods, smart logistics, and access con-
trol. RFID is a contactless, usually short‐distance transmission and
reception technique for unique ID data transfer from a tagged object to
an interrogator (reader). The generic configuration of an RFID system
comprises (i) an ID data‐carrying tag, (ii) a reader, (iii) a middleware,
and (iv) an enterprise application.
以STC12C5A60S2單片機(jī)為控制核心,采用2.4G(JF24D)無(wú)線遙控模塊進(jìn)行無(wú)線發(fā)射與接收,設(shè)計(jì)了一種雙電機(jī)遙控船模控制系統(tǒng).該系統(tǒng)通過(guò)切換檔桿實(shí)現(xiàn)前進(jìn)后退,方向盤(pán)左右轉(zhuǎn)動(dòng)、暫停按鈕等控制直流電機(jī)的正轉(zhuǎn)、反轉(zhuǎn)、暫停,使得電機(jī)驅(qū)動(dòng)的遙控船模實(shí)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(dòng)功率小和船模之間相互干擾等問(wèn)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.
AR0231AT7C00XUEA0-DRBR（RGB濾光）安森美半導(dǎo)體推出采用突破性減少LED閃爍 (LFM)技術(shù)的新的230萬(wàn)像素CMOS圖像傳感器樣品AR0231AT，為汽車(chē)先進(jìn)駕駛輔助系統(tǒng)(ADAS)應(yīng)用確立了一個(gè)新基準(zhǔn)。新器件能捕獲1080p高動(dòng)態(tài)范圍(HDR)視頻，還具備支持汽車(chē)安全完整性等級(jí)B(ASIL B)的特性。LFM技術(shù)(專(zhuān)利申請(qǐng)中)消除交通信號(hào)燈和汽車(chē)LED照明的高頻LED閃爍，令交通信號(hào)閱讀算法能于所有光照條件下工作。AR0231AT具有1/2.7英寸(6.82 mm)光學(xué)格式和1928(水平) x 1208(垂直)有源像素陣列。它采用最新的3.0微米背照式(BSI)像素及安森美半導(dǎo)體的DR-Pix?技術(shù)，提供雙轉(zhuǎn)換增益以在所有光照條件下提升性能。它以線性、HDR或LFM模式捕獲圖像，并提供模式間的幀到幀情境切換。 AR0231AT提供達(dá)4重曝光的HDR，以出色的噪聲性能捕獲超過(guò)120dB的動(dòng)態(tài)范圍。AR0231AT能同步支持多個(gè)攝相機(jī)，以易于在汽車(chē)應(yīng)用中實(shí)現(xiàn)多個(gè)傳感器節(jié)點(diǎn)，和通過(guò)一個(gè)簡(jiǎn)單的雙線串行接口實(shí)現(xiàn)用戶(hù)可編程性。它還有多個(gè)數(shù)據(jù)接口，包括MIPI(移動(dòng)產(chǎn)業(yè)處理器接口)、并行和HiSPi(高速串行像素接口)。其它關(guān)鍵特性還包括可選自動(dòng)化或用戶(hù)控制的黑電平控制，支持?jǐn)U頻時(shí)鐘輸入和提供多色濾波陣列選擇。封裝和現(xiàn)狀：AR0231AT采用11 mm x 10 mm iBGA-121封裝，現(xiàn)提供工程樣品。工作溫度范圍為-40℃至105℃(環(huán)境溫度)，將完全通過(guò)AEC-Q100認(rèn)證。
This project attempts to implement a Database using B+Tree. The project has developed a DATABASE SYSTEM with lesser memory consumption. Its API includes simple SQL Statements and the output is displayed on the screen. Certain applications for which several features of existing databases like concurrency control, transaction management, security features are not enabled. B+Trees can be used as an index for factor access to the data. Help facility is provided to know the syntax of SQL Statements.
About:
hamsterdb is a database engine written in ANSI C. It supports a B+Tree index structure, uses memory mapped I/O (if available), supports cursors, and can create in-memory databases.
Release focus: Major feature enhancements
Changes:
This release comes with many changes and new features. It can manage multiple databases in one file. A new flag (HAM_LOCK_EXCLUSIVE) places an exclusive lock on the file. hamsterdb was ported to Windows CE, and the Solution file for Visual Studio 2005 now supports builds for x64. Several minor bugs were fixed, performance was improved, and small API changes occurred. Pre-built libraries for Windows (32-bit and 64-bit) are available for download.
Author:
cruppstahl
Data Structures and Algorithms
with Object-Oriented Design Patterns in Java
Bruno R. Preiss
B.A.Sc., M.A.Sc., Ph.D., P.Eng.
Associate Professor
Department of Electrical and Computer Engineering
University of Waterloo, Waterloo, Canada
