基于脑电特征的酒后驾车事故倾向预估建模

摘要： 为建立酒后驾车的事故倾向预估模型，测量了18位驾驶员不同程度饮酒后的脑电信号和交通事故倾向指标，并分别根据左额叶区脑电的长时周期度和瞬时复杂度计算规范化脑电δ波功率增益和脑电模糊熵.引进一种混合型Sigma Pi模糊神经网络，研究网络权值训练方法，构建脑电特征参数和事故倾向指标之间的预估模型.实验结果表明：模型估计值与实际值吻合较好，具有一致增减特性，在驾驶员饮酒量小于50%主观最大饮酒量时误差很小，在饮酒量大于50%主观最大饮酒量时误差随饮酒量增大有所增加.     

基于过程方法的某型航空发动机质量管理

随着国防科技的发展,为适应国际军事战略格局和未来高技术条件下的作战要求,对航空发动机的质量和可靠性的要求及质量管理工作也提出了更高的要求。所有的管理都可以归纳为一个过程,而各种过程能表征为一个统一的结构模式。过程方法是质量管理八项原则之一,是对体系中的诸过程进行识别、明确过程间的联系和相互作用,对诸过程进行系统的应用、管理和连续的控制,使体系运行达到更佳的效果。针对某型航空发动机的质量管理活动,较为系统的研究了如何应用过程方法进行该型发动机研制质量管理,阐述了如何利用过程方法对该型航空发动机研制过程进行识别、分解和循环控制,从而提高该型航空发动机研制过程质量管理的有效性。     

一个可取代某种高重循环的算法

在同顺序m×n排序问题中有一个效果较好的启发式算法 ,其直接算法涉及到高于7重以上的循环程序。本文提出了一种可用计算来取代循环的简单、新颖的方法 ,该方法是在目前提供的算法设计中未曾见过的     

最大度为5不含6-圈的可平面图的边染色

运用Discharge方法以及临界图的一些重要性质,证明了每个最大度为5且不含六圈的简单平面图的边色数等于5,即这样的平面图是第一类的.     

沿空掘巷围岩稳定性实例分析

通过分析两例分层开采沿空掘巷围岩应力和变形的实测矿压资料，得出沿空掘巷成巷期的支承压力影响区是回采期的2倍，但支承压力高峰区均占超前影响范围的2／3；围岩变形程度以回采期为主，而且下帮（采空区侧）顶底板移近量走出上帮（实体煤侧）顶底板移近量20％－30％。     

IV.—On some new species of Quadrupeds and Shells

Austrohalipegus anguillicola gen. et sp. nov. is described from the stomach of Anguilla reinhardtii Steindachner. Austrohalipegus is distinguished from other derogenid genera by the absence of filaments on its eggs, by the presence of blindly ending caeca, by having the ventral sucker in the middle of the body, by having the sinus-sac enclose only the hermaphroditic duct, and by the uterus which does not extend posterior to the vitellarium. Austrohalipegus anguillicola is distinctive in having a large temporary sinus-organ formed by a completely eversible hermaphroditic duct. Isoparorchis hypselobagri (Billet) is recorded as juveniles of 1–3 mm in length from the coelom and as larger juveniles and adults from the swim bladder of Tandanus tandanus Mitchell. The miracidium is typically hemiuroid and has a crown of apical spines and cilia in lateral bunches. Experimental infections in which the prosobranch snails Posticobia brazieri and Melanoides tuberculatus were fed embryonated eggs produced infections of mother sporocysts. It is postulated that the life-cycle includes an obligate period of development in the coelom of the definitive host for the Australian form of the species. Stegodexamene watsoni sp. nov. is described from the intestine of Maccullochella peeli (Mitchell). It is distinguished from the two other species of this genus by its considerably larger cirrus pouch and its more extensive vitellaria. Burnellus trichofurcatus (Johnston and Angel) is recorded from new hosts, Arius graeffei Kner and Steindachner and Neosilurus ater (Perugia). Aspects of its biology are discussed. Pretestis australianus Angel and Manter is recorded from a new host, Scortum hilli Castelnau, extending the known range of this species.     

Biology and life cycle of Scopelocheirus hopei (A. Costa, 1851), a scavenging amphipod from the continental slope of the Mediterranean

The biology of Scopelocheirus hopei, a deep-sea (500 m) scavenging amphipod that lives on the continental slope of Mediterranean canyons, was studied. Animals were collected using a baited trap. A new method was developed for reproducibly measuring the exact length of the animals. All the categories of individuals were always present in the samples. The emergence of offspring occurs in successive cohorts. Individuals of the two sexes do not grow at the same rate: the males grow more quickly than the females, but their lifespans are shorter. The males are always less numerous than the females. Two production cycles occur. The females produce offspring all year round. The mean fecundity was found to be 218 eggs per female. The growth pattern was modelled. A strong correlation was observed between the length and the weight of the animals collected. Several hypotheses are proposed to explain the results obtained.     

浅议综采工作面快速硬过无炭柱方法

阐述了山西焦煤西山煤电集团公司杜儿坪矿综采工作面采用硬过无炭柱方法的原因,介绍了快速硬过无炭柱所采取的措施,指出对不能甩绕的无炭柱采用快速硬过的方法,可缓解衔接,多回收资源.     

冷却剂参数对铣槽喷管低周疲劳寿命的影响

采用有限体积流固耦合计算方法、非线性有限元热结构耦合分析方法和局部应变法研究大面积比铣槽喷管三维再生冷却槽道在循环工作条件下的热结构变形与低周疲劳寿命,并对比分析了冷却剂质量流量与入口温度对铣槽喷管疲劳使用寿命的影响。计算结果表明,铣槽喷管热结构响应呈现复杂的三维效应,应变较大位置主要分布在与肋连接的内衬区域,喷管中部的残余应变量最大；冷却槽道低周疲劳寿命分布和热结构响应基本一致,最小寿命位于喷管中部与肋相连的内衬区域燃气侧；随冷却剂质量流量增加,铣槽喷管低周疲劳寿命不断提高；随冷却剂入口温度增加喷管尾部低周疲劳寿命值不断降低,而喷管中前部的低周疲劳寿命值却不断提高,当冷却剂入口温度为280K左右时,本文的铣槽喷管总体使用寿命达到最大。      

基于余弦模型的运动生物节律计算法初探

通过对目前常用生物节律计算方法的比较研究，发现它们都存在一定的局限性．针对这一问题，提出一种新的生物节律计算方法——余弦模型法，并列出该方法的详细运用步骤．以湖北省武术运动员为实例进行预测，预测结果与运动员自身情况相吻合，验证了该方法的准确性，因此该方法可以为业内人士所采用，同时也是一种新方法的探索与实践的开始．