互动电子白板系统的设计与实现

本文设计了一种基于红外技术的互动电子白板系统,该系统由红外摄像机、红外笔、普通电脑、投影仪和幕布5部分组成。其利用红外摄像机捕捉红外笔发出的光点,并将位置信息返回到电脑,实现互动电子白板的书写功能。互动电子白板软件采用C#语言和.Net平台,运用GDI＋技术,实现了绘图、控制面板、屏幕定位等模块。系统界面友好、操作简单、使用方便,价格经济。     

Spinal Cord Stimulator Adjustment to Maximize Implanted Battery Longevity: A Randomized,Controlled Trial Using a Computerized,Patient‐Interactive Programmer

Internally powered, implanted pulse generators (IPGs) have been an important advance in spinal cord stimulation for the management of pain, but they require surgical replacement, with attendant cost and risk, when the implanted battery is depleted. Battery life is determined by the programmed settings of the implant, but until now the technical means to optimize settings for maximal battery life, delaying surgical replacement as long as possible, Materials and Methods. We have developed a patient‐interactive, computerized programmer for use with IPGs. It has been designed for easy operation and comprehensive data management, which have not been features of the standard programmers available until now. It automatically and rapidly presents to the patient a sequence of settings (contact combinations and pulse parameters) specified by the practitioner. Test results are analyzed and sorted to determine the optimal settings by multiple criteria, including battery life. In the present study we used new, improved algorithms to estimate battery life. We have compared the computerized, patient‐interactive system with standard practitioner‐operated, manual programming methods in a randomized, controlled trial in 44 patients at two study centers. In 95% of patients (41/43), the computerized, patient‐interactive system identified new settings with improved estimated battery life (and corresponding anticipated cost savings) which had not been recognized as such using manual methods. The estimated battery life for the setting chosen by each patient using manual methods averaged 25.4 ± 49.5 (mean ± standard deviation) months; the longest battery life identified by computerized methods averaged 55.0 ± 71.7, a 2.2‐fold or 29.6 month improvement. Seventy‐two percent of patients (31/43) achieved better battery life at settings with technical results (visual analog scale rating of overlap or coverage of pain by stimulation paresthesias) equal or superior to those achieved by manual methods. The overall improvement over the setting chosen by manual methods was 1.41‐fold or 10.5 months; averaged by patient, the improvement was 1.63‐fold. Estimated cost savings averaged just over one‐third. As reported previously, the new system also yields significantly (p < 0.0001) better technical results than traditional, manual methods in achieving coverage of pain by stimulation paresthesias; the very best technical results were achieved at some expense in estimated battery life (assuming the same frequency of use). We conclude that significant potential savings in longevity of the implanted battery are possible in the majority of patients with implanted spinal cord stimulators, but have not been realized until now for lack of appropriate methods. Computerized, patient‐interactive programming addresses this problem and allows optimization of estimated battery life along with other treatment goals. Long‐term clinical followup will be required to establish the full magnitude of the resulting savings.     

针吸细胞学在乳癌快速诊断中的应用

本文报道针吸细胞学快速诊断乳腺癌的优越性,着重观察该方法在乳腺病诊断中的价值,旨在提高细胞学的诊断水平,为临床提供可靠的依据。通过我院483例乳腺肿块针吸细胞学检查,该方法确属安全简便、经济、易行、患者容易接受检查,在基层医院亦有较大的推广价值。     

一期切开引流加挂线术治疗肛管直肠周围脓肿308例

目的　探讨一期切开引流加挂线术治疗肛管直肠周围脓肿的效果。方法　对 30 8例肛管直肠周围脓肿患者行一期切开引流加挂线术治疗。结果　 30 8例肛管直肠周围脓肿患者经治疗后 ,一次性一期切开引流加挂线手术成功 30 3例 (占 98.4 % ) ,仅有 5例 (占 1.6 % )复发再次手术。结论　一期切开引流加挂线术是治疗肛管直肠周围脓肿较为理想的方法     

A comparison of clock and pentagon drawing in Alzheimer's disease

Clock drawing is described as a novel, easily administered bedside measure of cognitive function. We examined from 77 ambulant elderly persons meeting NINCDS criteria for Alzheimer's disease their drawings of clock faces and overlapping pentagons. Interrater reliability for two previously published scoring scales for clocks and a devised ordinal scale for overlapping pentagons was high. There was moderate correlation with their total scores on the CAMCOG and Mini Mental State Exam (MMSE). However, a considerable number of patients scored within the normal range on all three drawing scales. A third (23/77) on clock drawing demonstrated their only abnormality at setting the time to 10 to 11 instead of the requested 10 past 11. For the clock drawing test to be used as a rapid screening instrument for Alzheimer's disease in the community an accurately drawn clock face must include the correct position of the hands. The pentagon test either alone or in combination did not enhance the accuracy of the clock test.     

高速并条机若干问题的剖析

本文就压力棒牵伸的特点作了分析。并以CHERRYD—400MT并条机为例,说明压力棒在主牵伸区中的合理位置。还从振动概念出发,分析了空气加压与弹簧加压的罗拉钳口压力稳定性问题。通过计算表明,空气加压能扩大皮辊直径的使用范围。此外,对CHERRY并条机集束器的结构作了初步探讨。     

Sexual attitudes as correlates of sexual details in human figure drawing

The hypothesis that sexual attitudes, as measured by the Sexual Opinion Survey, are related to the explicitness with which nude figures are drawn was examined. The presence or absence of various sexual and nonsexual anatomical features, as well as length and width measurements, were assessed in the drawing of nudes by 17 male and 23 female undergraduates. Individuals with relatively positive sexual attitudes (erotophiles), as compared with individuals with relatively negative attitudes (erotophobes), were more likely to include such details as a glans, a urinary meatus, and chest hair on male figures and pubic hair and nipples on female figures. Positive sexual attitudes were also associated with drawing figures with longer and wider penises, breasts, testicles, and mons. Relationships between sexual attitudes and the drawing of nonsexual body parts were generally not significant. The results are discussed in terms of the pervasive generality of sexual attitudes in influencing quite varied sex-related behaviors.