利用ArcObjects实现DWG挂接MDB属性数据转入Geodatabase的方法

以某工程为例,介绍一种利用ArcObjects实现DWG挂接MDB属性数据直接转入Geodatabase的方法。     

在VC++中使用ADO方式对ACCESS数据库进行操作

本文主要介绍了在VC++6.0中使用ADO对客户端数据库显示、读取、插入、修改、删除、排序等功能进行操作,并对其结果进行仿真,从而证明了该程序的可行性。     

计算机实时测量软件开发

介绍了计算机实时测量软件的设计方法,侧重论述了利用ACCESS开发测量软件的方法和步骤.     

Access Protocols for Cellular High-Speed Data Services

In this contribution, novel access techniquesfor the future cellular information networks areproposed. To facilitate a fast deployment, the suggestedaccess techniques have been implemented over well-known technological platforms, namely DECT (DigitalEnhanced Cordless Telecommunications) containing aFDM/TDMA (Frequency Division Multiplex/Time DivisionMultiple Access) structure. Two situations areconsidered: i) no limits in the use of the all carriers atterminal (ideal case) and ii) maximum number ofcontiguous/simultaneous carriers at terminal (realisticcase). First, to grant a quick access channel, a random access mechanism with reservation is proposed.It is called contention-TDMA (C-TDMA). Next, in order tostudy the feasibility of better collision resolutionalgorithms for C-TDMA, a centralized approach called Centralized C-TDMA Demand Assignment(CC-TDMA-DA) has also been studied. For the ideal case,numerical results indicate that C-TDMA and CC-TDMA-DAyield similar throughput values in typical cellular scenarios. Also, CC-TDMA-DA tends to bepreferable for traffic sources with long messages andweak delay constraints, while C-TDMA performs better forbursty traffic sources with hard time requirements. Additional numerical results for the realisticcase have demonstrated that system performancedeteriorates little with respect to the ideal case interms of collisions, delays and throughputfigures.     

利用ArcObjects实现DWG挂接MDB属性数据转入Geodatabase的方法

以某工程为例，介绍一种利用ArcObjects实现DWG挂接MDB属性数据直接转入Geodatabase的方法。     

利用ArcObjects实现DWG挂接MDB 属性数据转入Geodatabase的方法

以某工程为例,介绍一种利用ArcObjects实现DWG挂接MDB属性数据直接转入Geodatabase的方法.     

Evolution Strategies for Mobile Telephony Employing Multiple Coexisting Technologies

In many countries, the analogue Advanced MobilePhone System (AMPS) is progressively being replaced bydigital technologies, with the intention of maximizingcapacity and service quality. This paper considers strategies for the evolution of mobiletelephony services, employing several coexistingmultiple access technologies, such as Code DivisionMultiple Access (CDMA) and Global System for Mobile(GSM), in recovering the spectrum previously used byanalogue technologies such as AMPS. We propose partialspectral overlay and interference control strategies forCDMA systems overlaying AMPS and GSM systems, to provide smooth transition paths for introducingthe CDMA technology, and we show that these overlaystrategies lead to significant increases in overallnetwork capacity.     

HARRIS发射机远程监控系统软件设计(一)

本文介绍了云南人民广播电台调频发射台远程监控系统软件的设计方法和软件设计中新技术的应用。     

利用ACCESS数据库与VB编程开发音频配线管理系统

分析了开发音频配线管理系统的必要性，介绍了ACCESS与VB的软件特点，阐述了编程思路及系统开发过程，举例说明了如何利用VB实现对ACCESS数据库的访问。