Face recognition: combining cognitive psychology and imageengineering

Many cognitive tasks that are easy for humans to perform are proving difficult to emulate in computer systems. Combining the disciplines of psychology and engineering may offer a solution to some of these problems. A connectionist or neural network model of face recognition by humans which incorporates aspects of a model proposed by cognitive psychologists is presented. A comparative set of experiments has been performed using this simulation and human subjects for familiar face recognition. By employing the same stimuli for both humans and the computer model, it is possible to advance not only our understanding of human cognition but also to develop improved automated systems for face recognition     

10 Gbit/s NRZ global transmission using optically amplifiedelectronic regeneration

10 Gbit/s NRZ error-free fibre transmission over distances exceeding 400000 km is demonstrated using an optically amplified regenerator with a 160 km span. Direct modulation of a DFB laser raises the stimulated Brillouin scattering power threshold while maintaining system simplicity and robustness     

Response to intravenous midazolam sedation in general dental practice

The object of this study was to grade the response of patients undergoing a variety of dental procedures with the aid of intravenous midazolam sedation in general dental practice and to explore any relationships between the patients preoperative anxiety assessment and the clinician's assessment of co-operation whilst under sedation. One hundred consecutive patients aged between 18 and 58 years (mean 32 years; sd 10 years) and in ASA Class I or II were prospectively studied. Results showed that despite attempts to grade patient's behaviour it was not possible to reliably predict patient's responses under intravenous sedation. In addition to these findings, the great individual variation in sensitivity to midazolam was confirmed.     

Transitions in Chromium

Discontinuous changes of Young’s modulus, internal friction, coefficient of expansion, electrical resistivity, and thermoelectric power are evidence for a transition in chromium near 37°C. Although the X-ray diffraction pattern gives no clue, a difference between the thermal expansivity and the temperature dependence of the lattice parameter suggests a crystallographic change. Young’s modulus data disclosed another transition near—152°C.     

Retrofit of 22 pipeline pumping stations with 3000-hp motors andvariable-frequency drives

Learning experiences encountered on a large variable-frequency induction motor drive installation are reported. The drives were widely dispersed at multiple locations and generally fed from very weak power systems. This paper discusses several different and unusual interferences and power quality issues encountered with different electrical utilities and makes suggestions with respect to specifications, logistics, installation and field measurements for the benefit of future projects     

Interacting effects of tillage method,nitrogen fertiliser and secondary drainage on winter wheat production on a calcareous clay soil

The response of winter wheat to nitrogen fertiliser within the range 0–200 kg ha^?1 in 40 kg increments applied either in April or in May in two consecutive seasons (1976–77 and 1977–78) was tested in a field experiment on a calcareous clay soil that was either direct-drilled, shallow tine cultivated (5–8 cm), or mouldboard ploughed (23 cm). These cultivation methods had been used on the same plots in the four preceding seasons (1973 to 1976) in a comparison of cultivation systems. A comparison was also made with direct-drilling on land that had been deep tine cultivated (17 cm) during the 1973–76 experiment. In the second season (1977–78) effects were examined of newly drawn mole drains, on land that had been direct-drilled or ploughed. In both seasons the effect of cultivation method on grain yield was small when nitrogen fertiliser was applied at 80–120 kg N ha^?1. Nitrogen top dressings in April gave heavier yields than the equivalent dressings in May, partly because of dry weather after the May applications in both years. There was no interaction between method of cultivation and amount of nitrogen applied in 1976–77, but a significant interaction was detected in 1977–78 which was probably associated with less nitrogen being available in the uncultivated soil during the winter and spring. The results show that the potential yield of direct-drilled crops may have been underestimated in some earlier comparisons of different methods of cultivation where small uniform top dressings of nitrogen were applied to each cultivation treatment. Mole drainage increased yield especially at low rates of nitrogen and after direct drilling, These results indicate that direct-drilled and ploughed land may differ in their drainage requirements.     

私有云服务将在2012年前大行其道

Gartner指出,尽管公共云提供商提供规模经济和更成熟的云计算产品,但在可预测的未来,私有云服务将大行其道。直到2012年,相对在公共云提供商上的投资,IT企业在私有云计算上的投资更多。     

40 Gbit/s transmission over 202 km of standard fibre using midspanspectral inversion

The authors demonstrate for the first time the transmission of a 4×10 Gbit/s OTDM data sequence over two unrepeatered links of 100 km of nondispersion shifted fibre. The experiment is enabled using midspan spectral inversion and electroabsorption modulator sources and demultiplexers, and results in a record bit-rate-distance product of 8.1 Tbit/s km for a single channel over standard fibre     

Pulse morphology visualization and analysis with applications in cardiovascular pressure signals

We present a new analysis and visualization method for studying the functional relationship between the pulse morphology of pressure signals and time or signal metrics such as heart rate, pulse pressure, and means of pressure signals, such as arterial blood pressure and central venous pressure. The pulse morphology is known to contain potentially useful clinical information, but it is difficult to study in the time domain without the aid of a tool such as the method we present here. The primary components of the method are established signal processing techniques, nonparametric regression, and an automatic beat detection algorithm. Some of the insights that can be gained from this are demonstrated through the analysis of intracranial pressure signals acquired from patients with traumatic brain injuries. The analysis indicates the point of transition from low-pressure morphology consisting of three distinct peaks to a high-pressure morphology consisting of a single peak. In addition, we demonstrate how the analysis can reveal distinctions in the relationship between morphology and several signal metrics for different patients.     

2010年亚太SaaS投资将增加

根据Gartner所做的一项调查,到2010年底,亚太地区75％的机构将增加在软件即服务（SaaS）方面的投资。在所有受访的机构中,80％的机构正在为其ERP和CRM等企业应用软件应用SaaS,而余下的20％的机构计划在未来的12个月内部署SaaS。