大学图书馆创新发展探析

文章以图书馆的转型发展与高等教育的快速发展为背景,从公共空间、文化自觉、服务重塑以及智慧图书馆四方面对新时期大学图书馆的创新发展进行了系统探析。参考文献16。     

自适应增量调制的Matlab仿真实现及性能研究

自适应增量调制(ADM)是现代语音数字化的一种常用方式,是模数转换和压缩编码的一种重要方法.通过对DM技术的研究,在此基础上引入ADM技术.建立ADM系统模型,采用步长自适应法实现.使用MATLAB仿真实现并根据仿真结果分析其性能.提出ADM能够自动跟踪快速变化的信号波形,比DM具有更良好的SNR性能和更大的动态范围,在很低的速率上就能得到高的编码质量,如32kbit/s甚至是16kbit/s,从而节省了带宽.     

科技期刊应加强保密工作

结合曾经出现的典型科技期刊泄密事件,简要分析了科技期刊领域存在保密问题的原因及产生的深刻教训。阐述了新时代科技期刊应该更加重视保密工作的意义,它是国家大安全观、护航经济稳定发展和科研自身可持续发展的必然要求。从提高办刊人员保密意识、制定可行措施和加强监管引导3 个方面,对科技期刊加强保密工作提出可行性建议。     

枸杞多糖的生物学效应及其在运动中的应用

枸杞多糖（LBP）是枸杞发挥生物学作用的主要有效成分。阐述了枸杞多 糖的多种生物学效应及其与提高运动能力之间的关系,探讨了其提高运动能力的 生物学机制,并展望了其作为运动营养补剂的发展前景。     

基于等腰直角三角形的二值图像压缩算法研究

针对二值图像的几何相似性,本文提出一种基于等腰直角三角形的压缩算法。该算法以四叉树为数据结构,以达到减小中间结点的开销;同时该算法的时间复杂度和空间复杂度均低于采用JBIG标准来压缩二值图像。其压缩比可提高15%;同时适用于复杂图像。     

酒店女性管理者职业生涯规划的影响因素分析——以广州市高星级酒店为例

现代女性越来越多投身于个人职业发展中,其职业生涯规划意义重大。国内外有关女性职业发展的研究已有丰富的理论基础,但理论分析较多,实证研究成果相对匮乏。高星级酒店的女性管理者职业生涯规划的影响因素分析具有较为重要的理论意义和实践价值。首先,通过文献研究和问卷调查确定女性职业生涯规划的影响因素,并选取某高星级酒店作为案例,通过深度访谈具体分析各影响因子的具体表现。结果显示：影响酒店女性管理者职业生涯规划的因素主要有社会因素、个人因素、家庭因素和组织因素。社会因素是一种宏观背景;个人因素贯穿女性管理者职业生涯规划的始终,是职业生涯规划的基础;家庭因素对酒店女性管理者婚后和生育后的职业生涯规划产生重要影响,其中家庭责任的影响具有两面性,而来自长辈和丈夫的家庭支持能促进其职业生涯规划的可持续发展;组织因素属于外部客观的影响因素,酒店和谐的工作环境和完善的福利制度,对其职业生涯规划起到积极的推动作用。     

综合英语教学中语言应用能力的培养——以语言交际能力的培养为例

通过对在校学生现状的分析与调查,结合课堂教学实际,认为现阶段高职高专院校的综合英语教学应着眼于培养学生综合应用语言的能力.     

中华民国南京国民政府的考试立法

南京国民政府成立后,设立中华民国考试院,使之与行政院、司法院、立法院、监察院平列并重,独立地行使职权。为使考试院行使职权更趋公平、公正,实行考试立法,先后颁布了一系列考试法规,为考试院独立行使考试职权,取信于民,做了十分有价值的尝试,也为今天考试立法提供了有益借鉴。     

两种边缘检测方法的比较

本文通过对拉普拉斯算子和梯度极值微分算子两种边缘检测方法的比较，详细介绍了两种方法的原理，指出了拉普拉斯算子存在的问题，以及梯度极值微分算子在局部区域边界检测窗口内，直接提取边界象素，分割的边界为真实边界，边界连续性好。     

西藏高原植物区系中特有属的研究

The Xizang (Tibetan) flora with numerous endemics is of importance in Chi- nese flora.   According to recent statistics there are in Xizang 27 genera of  spermatophytes endemic to China, being only 2.25% percent of the total number of genera in the Xizang flora. Four of them are regarded as palaeoendemics (14.81%) and the others as neoendemics (85.19%). These endemic genera, of 30 species and 3 varieties, belong to 17 families, of which, Umbelli- ferae contains 6 genera, 7 species and 3 varieties; Compositae has 6 genera and 7 species, and Gentianaceae 1 genus and 2 species.  All the other families each comprises one genus with a single species.       The cosmopolitan families together comprising 14 genera with 15 species have the highest perecentage (52.92%) and the tropical ones (5 families, 5 genera with 5 species) come to the next (29.42%), followed by the temperate ones (3 families, 10 genera with 10 species) (17.66%). It shows that these endemic genera are obviously related to the tropical flora and temperate one in essence.        According to the number of species, the genera endemic to China and occurring in Xi- zang flora may be grouped as fallows. Monotypic endemic ones 14 (51.85%) Ditypic endemic ones 6 (22.22%) Oligotypic endemic ones 4 (14.81%) Small endemic ones 3 (11.11%)        The formation of the endemic genera is correlated with the topography, climate and en- vironmental conditions, and they may have resulted from the diversification in geography and climatic influence for a long time.  The southeastern part of Xizang Plateau is of very diverse ecological conditions, with the adequate precipitation, which may explain the concentration of these endemic genera in this region.        The largest similarity coefficient (38.30%) of the genera endemic to China and occurring in Xizang is with those in Qinghai Plateau, next, with those in Yunnan and in Sichuan pro- vinces (both 27.60%), which shows that these endemic genera are related to the floras of the regions mentioned above.        The difference in the horizontal distribution of these endemic genera is obviously between the southern and northern parts of Xizang Plateau.  The vertical distribution of the genera is also rather obvious, from 800 m to 5200 m above sea level, but concentrated in the zone of 3000 m to 4500 mm.  Therefore their occurrence in Xizang is not only affected by the historical environmental conditions but also controlled by the horizontal and vertical distribution.      The origin and evolution of some endemic genera, such as Psammosilene, Parateropyrum, Sphaerotylos, Salweenia, Ajaniopsis, Xizangia, Sinoleontopodium, are discussed in this paper.      Parateropyrum, a monotypic palaeotropic endemic, belongs to the tribe Atraphaxideae in- cluding Atraphaxis, Calligonum and Pteropyrum.  It may be a comparatively advanced group in the tribe, and is closely related to the genus Pteropyrum  which is  distributed in western Asia.  The genus Parapteropyrum has possibly survived as a palaetropic-tertiary  relic in this region.      Sphaerotylos, a member of the subtribe Sphaerotylinae, the tribe Boehmerieae in the family Urticaceae, is a comparatively primitive genus in the tribe Boehmerieae so far known.  As the other subtribes, such as Boehmerinae, Sarconchlamydinae, Orecnidinae and Maoutinae, are dis- tributed in the tropics, rarely in the subtropics, the genus is no doubt a palaetropic -tertiary relic.      Sinoleontopodium, belonging to the tribe lnuleae in Compositae, is also related to the ge- nus Leontopodium.  It is probable that the genus Sinoleontopodium arised later than the other.       We come to the conclusion that the southern part of Xizang Plateau is also one of thecentres of the origin and differentiation of genera endemic to China.