具有自学习功能的电力负荷模糊推理预测

考虑到电力负荷预测问题中存在的不确定性,采用模糊推理预测方法进行负荷预测的研究。该方法利用电力最高负荷和国内生产总值的历史数据建立模糊推理规则,从而进一步建立最高负荷跟国内生产总值之间的模糊蕴涵关系,通过模糊推理得到了负荷预测结果。为了使模型能够象专家一样不断地总结新的经验并调整原有的经验,模型克服了其它模型中知识的凝固性,具有自学习功能。利用某些区的实际数据进行分析计算,得到了满足的结果。     

急性纯氧对SD大鼠损伤的研究

SD大鼠暴露于1ATA100％的急性纯氧中,对其血细胞和肺脏进行研究,以阐明急性纯氧对机体的损伤机制．结果表明：SD大鼠暴露于100％急性纯氧中不同时间,血液中红细胞的浓度（RBC）,红细胞压积（HCT）,血红蛋白浓度（HGB）,平均红细胞血红蛋白含量（MCH）,平均红细胞体积（MCV）,平均红细胞血红蛋白浓度（MCHC）,白细胞浓度（WBC）等无显著变化（P＞0．05）;但是,白细胞的分类变化显著（P＜0．05）或非常显著（P＜0.01或P＜0．001）,淋巴细胞随SD大鼠在急性纯氧中暴露的时间延长不断下降,中性粒细胞和单核细胞的总数不断升高．急性氧中暴露65小时后,20％的大鼠死亡,存活的大鼠解剖,发现肺部出现严重的炎症,肺的湿重．脂质过氧化（LPO）产物显著增加（P＜0．001）,超氧化物歧化酶（SOD）活力明显下降（P＜0．001）．     

Electrophysiological research of synapse formation from beginning to maturity

The development of synapses is an important question in neurobiology. We employ patchclamp technique to record MEPCs and EPCs of myoballs inXenopus cell culture. The rate of EPC/MEPC is related with synapses maturation. Accordingly, we define the mature synapses as those whose rate of presynaptic membrane ’ s EPC to MEPC is more than 8. The process of maturation needs about 2–5 h after neuntes contact with myoballs. We divide the development of synapses into three stages: young, developing and mature. The neurotransmitters stack gradually and increase by hundreds of times along with young synapses growing into maturity. So the process of synapses maturation should include presynaptic membrane specialization, postsynaptic membrane specialization and neurotransmitters stack.     

Relationship between the partitioning properties of motoneuron recruitment and the needle feeling propagation

Histological and physiological studies indicated that most skeletal muscles can be divided into a series of relatively independent sub-volumes: "neuromuscular compartments" and the partitioning property of the muscle result in the localization of muscle reflex. In the present experiment we studied the recruitment properties of medial gastracnemius (MG) muscle motoneuron pool of decerebrate cat with two kinds of local mechanical stimulation: local stretch and acupuncture-like stimuli. The results indicate that: (ⅰ) there is an obvious property of localization of recruitment activity, only the MNs which innervate the stimulated compartment were recruited by weaker and shorter stimuli; (ⅱ) recruitment activity spread to those MNs which supply the adjacent and distal compartments during the strength of stimulation or duration of the stimulation was increased; and (ⅲ) the recruitment property of muscle activity elicited by the local mechanical stimulation is thought similar to that of "needle feeling" along the meridian pathway during stimulation of acupuncture point.     

梯级水电站群最优运行的递阶控制算法

针对位于同一电网的梯极水电站群联合运行的情况,着重研究了在枯水季节最优调度的计算模式,提出了大系统递阶控制的优化算法。该算法也同样适用于规划中的梯级水电站。实例计算表明该算法是可行的,且解析性强。     

线阵CCD在折射率测量中的应用

提出利用线阵CCD传感器作为反射光或折射光的光强分布接收装置的折射率测量方法,研究了如何根据光强的空间分布曲线确定布儒斯特角或临界全反射角的定标方案,讨论了测量结果可能达到的精确度。     

非平稳正态过程水平上穿过的期望次数

设｛Ｘ（ｔ）,０≤ｔ≤Ｔ｝是标准正态过程且以概率１有连续的样本函数。探讨了对于水平ｎ〉０过程中穿过的期望次数,给出了几个涉及相关函数的条件。