草莓栽培新技术

本文介绍了草莓的栽培,管理等技术要点。从选苗到肥,水管理,以及病虫害防治。     

The rights of children and young people under special educational needs legislation in England: an inclusive agenda?

ABSTRACT

In this article we consider the rights of children and young people with special educational needs and disabilities in England, introduced under the Children and Families Act 2014, within the context of the wider reforms made by the Act. Drawing primarily on key informant interviews conducted as part of an ESRC project on Autonomy, Rights and Children with Special Needs: A New Paradigm? (ES/P002641/1), and making reference to the international framework of children’s and disabled persons’ rights, we present an analysis of the (mostly professional) viewpoints gathered and what they tell us about the progress towards the realisation of children and young people’s autonomy and agency in this field.     

A text to speech interface for Universal Digital Library

INTRODUCTION The objective of Universal Digital Library (UDL) is to capture all books in digital format (Universal Digital Library, 2005; Digital Library of India, 2005). Most of the digital information present in the digital world is accessible to a few who can read or under- stand a particular language. Language technologies can provide solutions in the form of natural interfaces so that digital content can reach the masses and fa- cilitate the exchange of information across differe…     

管理领域数学方法的理念与模式管窥

管理领域数学方法的理念是，仅从数量上研究管理对象及其运行规律，从中抽象出相应的数学模型，并用之于管理实践。这种方法的模式是，用数字、符号、算式、图示、函数关系式或其图象等数学语言，来描述管理对象及其运行规律，形成特殊的管理模式——数学模型。常用的数学模型主要有回归分析模型和线性规划模型等。     

计算机管理模式对图书馆带来的机遇与挑战

计算机技术的不断进步 ,信息时代的到来 ,人类将进入以计算机为核心的信息时代 ,计算机技术将影响到人类社会的方方面面 .论文从机遇和挑战两方面论述了计算机管理模式在图书馆中应用给图书馆的发展带来的深刻影响 ,并提出了迎接挑战的相应的对策 .     

对当前农村土地规模经营的分析与探讨

土地规模经营是农业发展的必由之路,但当前我国农村土地规模经营发展还存在许多不足, 只有明晰产权,政策落实,加快社会化服务体系建设和第二、三产业发展,才能推进规模经营发展。     

DPLL implementation in carrier acquisition and tracking for burst DS-CDMA receivers

This paper presents the architectures, algorithms, and implementation considerations of the digital phase locked loop (DPLL) used for burst-mode packet DS-CDMA receivers. As we know, carrier offset is a rather challenging problem in CDMA system. According to different applications, different DPLL forms should be adopted to correct different maximum carrier offset in CDMA systems. One classical DPLL and two novel DPLL forms are discussed in the paper. The acquisition range of carrier offset can be widened by using the two novel DPLL forms without any performance degradation such as longer acquisition time or larger variance of the phase error. The maximum acquisition range is 1/(4T), where T is the symbol period. The design can be implemented by FPGA directly.     

Optimization of block-floating-point realizations for digital controllers with finite-word-length considerations

INTRODUCTIONDuetothefinitewordlength (FWL)effect,acasualcontrollerimplementationmaydegradethedesignedclosed loopperformanceorevendestabilizethedesignedstableclosed loopsys tem ,ifthecontrollerimplementationstructureisnotcarefullychosen .Theeffectsoffinite…     

基于MATLAB的FIR/IIR滤波器分析与设计研究

数字滤波器在数字信号处理领域中已经得到广泛应用,利用MATLAB的数字滤波器设计工具箱可以快速有效地设计各种FIR/IIR数字滤波器,设计简单方便。在设计过程中可以随时对比设计要求和滤波器特性,并可通过不断调整参数,以使滤波器的设计达到最优化。     

基于灰度直方图与投影的数字图像信息组织与检索方法研究

提出一种基于灰度直方图与投影的图像检索方法.利用直方图间的距离定义了图像和候选图像之间的相似度,并利用数字图像的投影进一步检索,最后将两者结合起来,能快速准确地检索出图像.