糠醛气相脱羰Pd-Ni/γ-Al2O3催化剂的再生

对糠醛气相脱羰制呋喃用Pd-Ni／γ-Al2O3催化剂的失活原因进行了分析。利用空气氧化法、氨气活化法、溶剂洗涤法、硝酸镍浸渍法对失活催化剂进行了再生实验研究．找出失活Pd-Ni／γ-Al2O3催化剂的最优再生方法——硝酸镍浸渍法,确定了糠醛气相脱羰Pd-Ni／γ-Al2O3催化剂的最佳再生工艺参数。通过催化活性评价、物性分析表明．其再生效果较好。     

AUTOMATIC DECISION-MAKING： NEURAL FIRING AND RESPONSE

1. Introduction This is the fourth exposition on theAnalytic Hierarchy Process. It is true thatmany decisions we make subconsciously ariseout of our physical and biological needs andderive from the pressure to survive physically.We also make subconsciou…     

MAN-MACHINE COLLABORATED KNOWLEDGE CREATION IN HWMSE

1 Introduction Science of complexity and complex systems is a relatively new area In wide fields from chemistry, biology, environment, geo-science, climatology to economics and sociology, complexity has been studied from diverse views and understandings Systems science, which could be traced back to Ludwig von Bertalanffy’foundational work on general system theory, plays an active role in complexity studies From system perspectives, relevant concepts often include interaction, feedback, evol…     

非晶硅薄膜太阳能电池结构中本征膜的初步研究

本文介绍在近代物理实验室现有设备的基础上,利用等离子刻蚀机改装为成膜主机,用射频辉光放电方法制备了本征非晶硅膜,并利用激光喇曼光谱仪等设备进行了初步分析。     

Preparation and characteristics of flexible all-organic thin-film field-effect transistor

Much attention has been attracted to organic thin-film field-effect transistors (OTFFETs) in the past decades[1—4]. Because of their lower cost and easier preparation, OTFFETs are considered to be useful in driving liquid crystal displays (LCD) and organic light-emitting diodes (OLED). Furthermore, flexible OTFFETs will be one of the most useful electronic devices for flexible active matrix driving circuits. OTFFETs based on pentacene single crystal have been reported to be of g…     

均衡发展与非衡结构理论在训练实践中的应用探讨

运动训练实践中，按照均衡发展与非衡结构理论，结合运动员个体特征，在训练的不同阶段和竞技能力构成因素的主导地位等情况下，可通过对竞技能力构成因素的平衡与非衡补偿途径，有效地发展和提高运动员的竞技能力，创造优异运动成绩．     

陶粒载体序批式生物膜反应器及其氧传递系数测定

介绍了一种新型的生物膜反应器 :以陶粒为载体的序批式生物膜反应器 .并求出了在设定的工艺条件下的氧传递系数 .结果表明 :本反应器有较强的氧传递输送能力 ,能满足微生物的有机物代谢和降解有机污染物的需要     

强流加速器束晕控制中填充因子对束粒子密度的影响

运用PIC多粒子模拟程序，采用延迟反馈控制法，研究了离子束在运行过程中粒子分布情况．通过分析比较，得到了对束晕进行有效控制后的粒子分布规律，为强流加速器的应用提供了有用的参考．     

Novel Newton’s learning algorithm of neural networks

1 .INTRODUCTIONBP methodis a widely used classical learning algo-rithmof Neural Networks . Whileit has two short-ages ,i .e .slowconvergence rate and existinglocalmini mum of the cost function. Many new algo-rithms such as modification methods of BP meth-od, conjugate gradient methods , RLS methods ,quasi-Newton methods , evolving learning meth-ods ,chaos-learning algorithms have been proposedso far[1 ~7]. However ,these novel algorithms neverdirectly utilize the 2-ed order differentia…     

GROUP SIZE AND PARALLELISM EFFECTS IN TASKS WITHHETEROGENEOUS LEVELS OF DIFFICULTY：A STOCHASTIC ORDER APPROACH

We consider tasks where in order to perform them it is sufficient that one member of a group will know how to do it. We are interested in the effect of task difficulty, and variability of that difficulty, on group performance, and in particular on the marginal contribution of an additional number to the performance of groups of different size. We explore the implications of various stochastic orders over task difficulty and variability. Some intuitive conjectures are shown to be false.