Mobile gadgets catch the dreaded lurgi

Phones, laptops and PDAs could become the plague carriers of the 21st century, security specialists fear. The author explains why.     

Two ways to catch a wave [oscilloscopes]

Digital and analog oscilloscopes are compared. It is shown that digital oscilloscopes can compete with the best analog types when they are used with analog-to-digital converters that run at 4 Gsamples/s. The advantages of the digital instruments are examined     

Third-generation wireless must wait for services to catch up

3G is all about new services and content to keep the wireless party going. Like cable TV companies of yore, cellular operators today are awaiting the arrival of smashing new content to generate new streams of revenue as they build a new and expensive third-generation global network. Coming in two flavors (cdma2000 and UMTS/WCDMA), 3G technologies serve largely to protect the investment of their second-generation predecessors: IS-95, and GSM/IS-136, respectively. The amazing success of 2G digital cellular is proof that there is nothing wrong with today's networks. So, why build new ones? Basically, so that operators' efforts to find new sources of revenue will not be limited by market saturation. Cable TV experience proves that subscribers care little about networks and technologies; they just want new stuff. Like cable network providers before them, wireless network providers will not have to create the new services themselves. Rather, they will have to give the content providers virtual control over the network's bandwidth, allowing them to use what they need. What both content providers and network operators must ensure is that the right amount of bandwidth is assigned to bits according to the value perceived by subscribers. It will be up to the content providers to make the bits more valuable than ever before.     

Visual servoing to catch fish using global/local GA search

This paper presents a vision-related technique for a real-time visual servoing. The method utilizes the global search feature of a genetic algorithm (GA) and a local search technique of the GA. In the GA process, the computation of the fitness function is based on the configuration of an object model designated as the surface-strips model. To evaluate the effectiveness of the proposed recognition method, experiments to track a fish by a hand-eye camera and catch the fish with a net attached to the hand of the manipulator have been performed.     

以数字示波器和光通讯产品为带动，横河冲击测试第一集团

提到数字示波器,人们首先想到的肯定是泰克、安捷伦、力科这三大巨头,确实,凭借着领先的技术和优质的产品,他们在数字示波器第一阵营中一直占据着重要的地位.而在第二阵营中,以日本横河(YOKOGAWA)电机株式会社为代表的厂商也不可小视.     

Red LEDs must catch up the blues for full colour monolithic displays

At the time of writing, the most recent live demonstration of the growing legend of Nichia blue emitter devices was at the International Symposium on Blue Laser and Light Emitting Diodes, in early March at Chiba University, Japan [1] — see report in our next issue — and further demonstrations will be given at other international meetings later this year. Meanwhile, we are pleased to feature some of the photos which have recently been released of the blue emitting laser diodes together with a commentary on progress from Shuji Nakamura himself, the driving force behind these revolutionary devices at Nichia Chemical Industries.     

离子捕获电镜技术在犬传染性肝炎病毒和细小病毒感染快速诊断中的应用

本研究应用离子捕获电镜技术和直接负染电镜技术比较检测了临床上疑似为犬传染性肝炎和犬细小病毒性肠炎的犬送检样品。结果表明 ,离子捕获电镜技术具有快速、简便、直观和敏感等优点 ,可做为快速检测临床送检样品中病毒的常规方法推广应用     

Projects that fly

The project management requirements of the Joint Air Transport Evaluation Unit are unusually diverse. In this paper, the author describes a new task control system designed to ensure that diversity does not compromise order and efficiency     

Ties that bind

VHDL designers can take advantage of the advanced verification features of SystemVerilog thanks to the bind function in the newer language. One of the most important languages to emerge for advanced design and verification is SystemVerilog. This language offers a rich set of features for testbench automation, applying native assertions, functional coverage and constrained random test generation. These features make SystemVerilog increasingly appealing to VHDL users who have a number of verification-oriented features at their disposal but need to implement a more efficient functional verification methodology for complex designs