n维Lorentz变换

以Clifford代数为工具，讨论n维Minkowski空间的性质，得到n维Minkowski空间的Lorentz变换。     

《汉书·艺文志》之“小说”与中国小说文体确立

“小说”一词 ,始见于《庄子》,但对小说文体进行界定和总结的首推汉代刘向、刘歆。浓缩刘氏父子校出成果、删《七略》之要的《汉书·艺文志》不仅首次确定了小说文体术语 ,著录了小说作品 ,也说出了小说出自民间 ,具有故事性、虚构性的特征 ,标志着中国小说文体在理论上正式确立并开始步入自我发展的正史时代。那种主张将自《汉书·艺文志》开始的目录学“小说”概念与自唐传奇开始的所谓文学小说概念区别开来 ,将唐传奇以前的小说视为中国小说的前史状态的观点 ,值得商榷。     

DVD在线租赁

通过建立一种比较新颖的网站在线DVD租赁模型,合理安排了网站购买DVD的数量和分配其会员租赁的DVD,在满足会员偏爱程度(权重)最大的基础上,依据基本概率论、0-1规划的方法,从已知表格的数据中导出权重,制定了DVD的租赁计划,然后综合考虑网站的最大收益和会员的最大满意度,得出最优的分配方案,并对模型做出了评价和改进.     

N80钢在中性介质中垢下腐蚀机理的研究

碳钢管线在水的集输过程中常常发生了局部腐蚀,在NaHCO3-NaCl为中性介质的溶液里,研究侵蚀性阴离子对N80钢垢下腐蚀的机理以及腐蚀产物对电极电化学行为的影响。     

The developmental consequence of different patterns of maltreatment

From a longitudinal study of 267 high risk families, four different patterns of maltreatment were identified. The mothers have been tested, interviewed and observed in a number of situations starting during the last trimester of pregnancy and continuing at regularly scheduled intervals through the preschool period. The four maltreatment groups were: physical abuse; hostile/verbally abusive; psychologically unavailable; and neglecting. A control group of mothers who provided adequate care was selected from the remaining high risk sample. In an earlier follow-up, among the maltreated children a disproportionately large number of infants were found to be anxiously attached to their mothers at 12 and 18 months, and their performance in a problem-solving situation at age two was poor. In the current follow-up, the children were videotaped at 42 months in a "barrier box" and teaching situation, and at 56 months they were observed in a preschool situation. The physically abused children were distractible, lacked persistence, ego control and enthusiasm, and experienced considerable negative emotion. The children whose mothers were psychologically unavailable showed marked increases in maladaptive patterns of functioning from infancy through preschool. As expected, they were avoidant of their mother, angry, noncompliant, and they were highly dependent. The neglected children had the most difficulty pulling themselves together to deal with various tasks. They lacked self-esteem and agency necessary to cope with their environment.     

女娲神话的文化蕴涵

女娲补天神话既反映了远古居民对中华大地地理形势的认识及母系氏族社会中女性的崇高地位,也反映了中国最早的石图腾崇拜,并且对中国人“补”的思维方式及拼搏奋斗精神也都产生了深远影响。女娲造人神话展示了原始时代人们生育观念的三次演变,即由女神化育生人到抟黄土做人再到男女共同生人的过程。女娲死后又成为最早的高裸之神（俗称送子娘娘）,一直影响着中国人的婚姻生活。     

Development and Application of a Two-Tier Diagnostic Test for High School Students’ Understanding of Flowering Plant Growth and Development

This study involved the development and application of a two-tier diagnostic test measuring students understanding of flowering plant growth and development. The instrument development procedure had three general steps: defining the content boundaries of the test, collecting information on students misconceptions, and instrument development. Misconception data were collected from interviews and multiple-choice questions with open response answers. The data were used to develop 13 two-tier multiple-choice items. The conceptual knowledge examined was flowering plant life cycles, reproduction, precondition of germination, plant nutrition, and mechanism for growth and development. The diagnostic instrument was administered to 477 high school students. The correlation coefficient of test-retest was 0.75. Difficulty indices ranged from 0.24 to 0.82, and discrimination indices ranged from 0.32 to 0.65. Results of the Flowering Plant Growth and Development Diagnostic Test suggested that students did not acquire a satisfactory understanding of plant growth and development concepts. Nineteen misconceptions were identified through analysis of the items that could inform biology instruction and resource.     

试论"V+N"式合成词中V的语义呈现特征

V N式合成词中,V的语义呈现决定于词素N,当N符合V的指代义的两个预设要求时,V就呈现指代义,整个词是动宾结构;当N不符合V的指代义的两个预设,反而意义上是V从属于N,那么,V就呈现指称义,整个词是偏正结构。     

嵌入式S3 C44B0X下家庭智能电子助手系统设计探究

生活在经济迅速发展科技不断进步的当代社会,人们对自身的生活质量有了更高的追求。而当下能从本质上进一步提高人们生活水平的方式就是实现家庭智能化,让科技带来的成果全面渗入到人们的日常生活中的各个领域。基于嵌入式S3 C44B0X的家庭智能电子助手系统的设计结合实际需求,在未来的应用中将充分体现出家庭智能化的优势。本文着重介绍家庭智能化的现实优势和嵌入式S3C44B0X的实际运用两方面优势,从而探究设计该家庭智能电子助手系统的实际必要性。     

提高当前高校学生心理咨询时效性探析

本文试从选用适应高校学生心理、认知发展特点、符合我国高校心理咨询工作实际情况的心理咨询技术出发,以期为提高当前高校学生心理咨询的时效性提供参考。