這個(gè)程序是一個(gè)基于對(duì)話框的程序，有一個(gè)簡(jiǎn)單的菜單.當(dāng)用戶選擇"CONNECT"時(shí),它將試圖連接test.mdb數(shù)據(jù)庫(kù),如果連接成功,將顯示由ODBC驅(qū)動(dòng)程序返回的完整連接字符串.接下來(lái),用戶可選擇"View All Records"命令,程序會(huì)使用listview control來(lái)顯示數(shù)據(jù)庫(kù)中的所有數(shù)據(jù).用戶還可以選擇"Query"命令來(lái)查詢特定的記錄.例子程序?qū)?huì)顯示一個(gè)小對(duì)話框提示用戶輸入想找的人名.當(dāng)用戶按下OK鈕或回車鍵,程序?qū)?zhí)行一個(gè)查詢來(lái)查找符合條件的記錄.當(dāng)用戶完成對(duì)數(shù)據(jù)庫(kù)的操作時(shí),可以選擇"disCONNECT"命令與數(shù)據(jù)庫(kù)斷開(kāi)連接.
With the rapid growth in the number of wireless applications, services and devices,
using a single wireless technology such as a second generation (2G) and third gener-
ation (3G) wireless system would not be efficient to deliver high speed data rate and
quality-of-service (QoS) support to mobile users in a seamless way. The next genera-
tion wireless systems (also sometimes referred to as Fourth generation (4G) systems)
are being devised with the vision of heterogeneity in which a mobile user/device will
be able to CONNECT to multiple wireless networks (e.g., WLAN, cellular, WMAN)
simultaneously.
Complex networks are powerful allies of our quest to tackle complexity in all
of science. Many lines can be written about the benefits of using networks to
study complex systems. Nevertheless, if I had to name their single most appealing
property,Iwouldsaysimplicity.Onecanmaptheinteractingelementsofanysystem
to a set of nodes, and CONNECT these nodes with a set of links according to their
interactions.
Mobile telephone service (MTS) is a type of service where mobile radio tele-
phones CONNECT people to the public switched telephone system (PSTN), to
other mobile telephones or to other communication systems (such as to the
Internet).
During the past three decades, the world has seen signifi cant changes in the telecom-
munications industry. There has been rapid growth in wireless communications, as
seen by large expansion in mobile systems. Wireless communications have moved
from fi rst-generation (1G) systems primarily focused on voice communications to
third-generation (3G) systems dealing with Internet CONNECTivity and multi-media
applications. The fourth-generation (4G) systems will be designed to CONNECT wire-
less personal area networks (WPANs), wireless local area networks (WLANs) and
wireless wide-area networks (WWANs).
Wireless Mesh Networks (WMN) are believed to be a highly promising
technology and will play an increasingly important role in future
generation wireless mobile networks. WMN is characterized by
dynamic self-organization, self-configuration and self-healing to
enable quick deployment, easy maintenance, low cost, high scalability
and reliable services, as well as enhancing network capacity, CONNECT-
ivity and resilience.
Driven by the rapid advancement of technology and the growing need of business
requirements, cyber communications are embedded in many physical systems. The
integration of cyber and physical capabilities leads to the creation of many applica-
tions with enormous societal impact and economic benefit. The emerging systems
that CONNECT the cyber-world of computing and communications with the physical
world are cyber-physical systems (CPS).
