Index of suspicion. Case 2

Super-sidecut skis are wider at the tip and tail than a traditional ski, and the waist varies depending on the function of the ski. The sidecut influences the performance characteristics of the ski, making it easier to initiate a turn, carve tighter turns, and carve at slower speeds--which translates into more fun. Super-sidecut skis are more sensitive to controlling movements, so you can ski in a more balanced, centered position. There are some compromises in terms of stability and injury risk. With so much variety in super-sidecut skis, controlled population studies will be necessary to track injury trends.     

Carving in comparison with ski technique of the skiing athlete (competitive skier) and the leisure and comfort level skier

In skiing there is principally no difference between the operating mechanism of a ski-racer and a skier who masters the technic of carving. Both try to ski with as less sliding as possible. The pressure distribution on the ski in a curve is very important. Near the end of the curve the pressure on the edge of the ski must be increased through various methods, on the one hand to avoid sliding and on the other hand to prepare the next curve correctly. In mastering the necessary mechanism of movements, the carving with the more wasted skis will be easier, because it is not necessary to put as much pressure on the last section of the ski, as it is necessary with the original skies to have the same result. Therefore even the holiday-skier has the possibility with carving-skis to master the ski-technic of the ski-racer and to have the pleasure of carving instead of sliding.     

Depression as measured by the DSM-III and the Beck Depression Inventory in an unselected adult population.

The National Institute of Mental Health Diagnostic Interview Schedule (DIS) and Beck Depression Inventory (BDI) were administered to 298 volunteers (average age 37.9 yrs) to determine the relation between DSM-III diagnosis of depression derived from the DIS and BDI scores of Ss. Results show that DSM-III diagnoses of depression were not associated with specific ranges of scores on the BDI, due to the heterogeneous nature of the category of dysthymic disorder. Using a cutting point of 9/10, sensitivity was 100%, specificity 86%, the proportion of false negatives 0%, and of false positives 13.7%, respectively. Upward adjustment of the cutting point on the BDI to 21/22 for research purposes reduced false positives to 1.4% but increased false negatives correspondingly to 52.4%. Upward adjustment of the cutting point on the BDI to 18/19 for epidemiologic purposes yielded an unbiased estimate of the prevalence of depression diagnosed by the DSM-III. (26 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Thyroid gland surgery in pregnancy]

Carving is a new version in alpine skiing. The continuous decrease of participants in alpine skiing beginning 1987 has been stopped, as carving has a modern image and as skier find new motivation in wintersports. The effect of carving on the incidence of injuries cannot yet be answered accurately. It is assumed that the increase of carvers will lead to a high number of accidents related with it. In this article, the existing data about carving injuries in Austria is analyzed to find out the necessary steps for injury prevention in the future.     

Probability and utility assumptions underlying use of the Strong Vocational Interest Blank.

Decision implications of E. K. Strong's (1955) assumption of equal base rates for his men-in-general and individual occupational groups are explored, using the Strong Vocational Interest Blank (SVIB) Physician's scale as an example. It is demonstrated that when realistic base rates are assumed, total decision error rate using the SVIB-even when optimal cutting scores are employed-is at best about equal to that resulting from prediction using base rates alone. Use of the SVIB as recommended by Strong implicitly assumes that false negative errors are much more serious than are false positives. When "reasonable" utility or gain matrices are assumed, use of the SVIB can reduce total error rate despite the limitations imposed by low occupational base rates; this effect is greater when statistically optimal cutting scores, rather than those recommended by Strong, are used. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

采用聚能爆破技术治理岩爆灾害的试验研究

岩爆是地下工程一大灾害,在应力集中的部位,采用爆破方法释放高地应力,可以有效降低岩爆灾害.聚能爆破具有用药量小、刻槽和成缝效果好的优点.结合锦屏二级水电站引水隧硐地下工程的岩爆问题,探讨了采用聚能爆破技术降低岩爆的可行性,并进行了浅孔和深孔聚能爆破的对比试验.研究表明,聚能爆破在高地应力条件下的成缝和刻槽效果较普通预裂...     

强化对“两创”的认识与实践

根据当代大学生的特点,提出和论证了对大学生实施创新和创业教育的重要性和必要性,强调了大学生创新精神和创业能力的培养离不开社会实践,离不开强有力的措施保证。     

Effect of ski tapering on turning radius and stress

The first part of this paper deals with the influence of the side cut on the turn radius, which was examined by measuring the turn radius of a self-running sledge-like construction and by comparing it to Howe's prediction. The turn radius at the beginning of the turn has proved to be between 65 and 85% of the theoretically expected result. In the second part a carvers turn radius was determined and the reaction force acting on the skier was calculated. The result shows a strong reduction of the turn radius along the path which increases the load on the skier. The effect of side cut and velocity on the load was examined. Using carver skis even small changes in velocity resulted in considerable load changes.     

A method for choosing a cutting point on a test.

Elementary decision theory is used to derive a formula for finding a cutting point on a continuous test used to distinguish between 2 criterion groups, when the test scores of each criterion group are distributed approximately normally. The formula considers the difference between the means of the criterion groups, the standard deviations of test scores of the groups, the relative sizes of the groups, and the relative seriousness of a "miss" vs. a "false positive." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Allogeneic auricular cartilage framework for total reconstruction of the ear in 8 patients

This paper reports our experience in total reconstruction of the ear using allogeneic auricular cartilage framework in 8 patients. The allogeneic auricular cartilage framework has natural appearance, and no carving or fabrication is needed. The cartilage treated with glutaraldehyde firmly adhered to its surrounding tissue of the host in a short time. Good results were observed in 6-month to 2-year follow-up, and no complications such as rejection, distortion and absorption occurred.     

The detection of faking bad response styles on the MMPI.

Investigated the ability of Minnesota Multiphasic Personality Inventory (MMPI) validity indicators to detect simulated MMPI protocols completed by a nonpsychiatric community sample while using an outpatient psychiatric sample as a criterion reference group. 113 Ss in 1 of 3 conditions (community-honest, outpatient-honest, and community-simulating) completed the MMPI. The F scale and the F-K index were conservative and relatively efficient indicators of faking bad. Cutting scores proposed by R. L. Greene (1988) for these validity indicators produced high false positive rates and were, thus, less than optimal for this population. More conservative cutting scores based on the present data were suggested. (French abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Carving expands the skiing field

Carving is only the logical consequence of the past developments in alpine skiing. The modern ski-theories as well as the professional racing aim for a perfect control over the ski to master the variable conditions. New is not the technic but the equipment. Driving on the edge covers everything from drifting up to carving. Carving is a big chance for the alpine skiing to break up old standards and experience a new quality in skiing.     

新型硬质合金微坑车刀切削能对比研究与预测

切削能绝大部分会转化为切削热,进而直接影响切削温度,因此研究切削能的产生、传递与转化对切削温度的研究尤显重要.本文以304不锈钢专用新型硬质合金微坑车刀创新设计为例,通过对新型微坑车刀和原车刀切削过程的切削能比较研究,建立车刀切削过程切削能与前刀面温度的关系模型,开展新型微坑车刀剪切能和摩擦能的预测研究和切削实验验证.研究结果表明,用实际生产推荐切削参数,干式切削情况下,新型硬质合金微坑车刀相比原车刀,输入能量降低8.96%,剪切能降低10.50%,摩擦能降低5.32%;刀具前刀面的切削温度与剪切能和摩擦能呈正相关关系;所建立切削能预测模型可为复杂切削条件下的切削能预测及前刀面切削温度研究提供参照.      

含硫齿轮钢20CrMnTiH中硫化物对切削性能的影响

在不同切削速度(200～230 m/min)和切削深度(0.5～2 mm)下试验研究了普通20CrMnTiH齿轮钢(0.006%S)和含硫20CrMnTiH齿轮钢(0.031%S)的切削性能。结果表明,随切削速度增大,刀具的磨损增大,在200 m/min,0.031%S钢是0.006%S钢刀具的使用寿命的2.8倍;在230 m/min,0.031%S钢是0.006%S钢刀具使用寿命的2.6倍;随切削深度增加,切削力增加,但在相同切削深度下,0.031%S钢的切削力低于普通0.006%S钢;由于0.031%S钢存在≤6μm的MnS夹杂,使切屑易断,并硫化物夹杂能够包裹Al₂O₃尖晶石夹杂,减少刀具磨损,提高钢材的切削性能。     

Characterization of Flame Cut Heavy Steel: Modeling of Temperature History and Residual Stress Formation

Heavy steel plates are used in demanding applications that require both high strength and hardness. An important step in the production of such components is cutting the plates with a cost-effective thermal cutting method such as flame cutting. Flame cutting is performed with a controlled flame and oxygen jet, which burns the steel and forms a cutting edge. However, the thermal cutting of heavy steel plates causes several problems. A heat-affected zone (HAZ) is generated at the cut edge due to the steep temperature gradient. Consequently, volume changes, hardness variations, and microstructural changes occur in the HAZ. In addition, residual stresses are formed at the cut edge during the process. In the worst case, unsuitable flame cutting practices generate cracks at the cut edge. The flame cutting of thick steel plate was modeled using the commercial finite element software ABAQUS. The results of modeling were verified by X-ray diffraction-based residual stress measurements and microstructural analysis. The model provides several outcomes, such as obtaining more information related to the formation of residual stresses and the temperature history during the flame cutting process. In addition, an extensive series of flame cut samples was designed with the assistance of the model.     

临床外科手术中骨切削技术的研究现状及进展

对骨切削研究中的骨切削数值仿真本构模型、骨切削手术工艺及机理等方面进行了综述, 着重介绍了切削参数对骨切削的影响、骨切削刀具设计等, 并对医学领域新兴的超声骨切削技术进行了介绍和分析.最后得出应从以下方面完善骨切削研究: (1)骨切削数值仿真的本构模型有待开发; (2)构建系统的骨材料切削理论以解释骨材料切屑形态的切削机理; (3)骨材料切削刀具的开发需要进一步深化; (4)超声骨切削由于安全性高、损伤小、愈合快的特点将成为未来临床骨切割操作的发展方向和趋势.      

控制爆破技术在凹陷露天矿新水平开拓工程中的实践

运用控制爆破和微差爆破理论 ,在以露天矿新水平快速开拓为主要目标 ,以控制爆破飞石和爆破振动为主要内容的开拓技术实践 ,通过分析比较 ,制定可靠的爆破方案 ,结果表明 ,该技术实践保证了开挖工期和周围建筑物的安全 ,并使爆破成本降至最小     

红外摄像定尺切割系统在板坯连铸中的应用

板坯切割精度一直是我们要提高的重要指标之一。日钢5#板坯机采用红外摄像定尺切割系统,该系统以摄像机作为传感器,采用图像处理技术,通过组建OPC Server实现与工业网络的数据通讯,由PLC控制火焰切割机完成定尺的切割[1]。此系统极大地提高了板坯的切割精度、降低了成本、减少了劳动强度、满足了工艺要求。     

株洲民营经济创业环境和机制研究

为了加快民营经济发展,在对株洲民营经济的发展态势进行分析并做出初步判断的基础上,阐述了优化创业环境和机制是促进株洲民营经济发展的当务之急,提出了加快株洲民营经济发展的若干建议。     

减小小方坯火焰切割割口的探讨

采用丙烷为燃料的连铸坯火焰切割技术,如果切割嘴设计不合理、燃气和切割氧参数设置不恰当,很难把割口缩小,也容易造成切割时的金属飞溅、断面不平整等问题.唐钢第二钢轧厂利用凝聚射流原理,减小切割嘴的切割氧通道喉口,并在切割嘴上增设气体混合仓,优化切割枪气体介质参数,使铸坯割口降低到3.1 mm以下,铸坯切割面平整度也有很大提高,切割过程中的飞溅现象也得到控制.