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101.
本文提出了一个单源单汇最大流简单算法,本算法具有容易理解、形式规范的特点,无论用于教学还是解决实际问题,都有较大的实用价值。 相似文献
102.
MAPGIS在县(市)级土地利用现状数据库建设中的应用 总被引:1,自引:0,他引:1
县(市)级土地利用数据库的建设,是"数字国土工程"中基础数据库的重要组成部分。本文简要介绍了基于MAPGIS在县(市)级土地利用现状数据库建设的工作流程。 相似文献
103.
Lian Xue Aijun Ding Owen Cooper Xin Huang Wuke Wang Derong Zhou Zhaohua Wu Audra McClure-Begley Irina Petropavlovskikh Meinrat O Andreae Congbin Fu 《国家科学评论(英文版)》2021,8(6):114-121
Trans-Pacific transport of enhanced ozone plumes has been mainly attributed to fossil fuel combustion in Asia in spring, but less attention has been paid to vegetation fires in Asia. Here we show that the El Niño-Southern Oscillation (ENSO)-modulated fires in Southeast Asia, rather than Asian fossil fuel plumes, dominate the interannual variability of springtime trans-Pacific transport of ozone across the entire North Pacific Ocean. During El Niño springs, the intensified fires from both the Indochinese Peninsula and Indonesia, together with large-scale circulation anomalies, result in enhanced ozone plumes that stretch over 15 000 km in both the lower-middle and upper troposphere. This enhancement is also observed in the in situ measurements of ozone concentration, with an almost 10% increase at Mauna Loa Observatory, Hawaii, a unique site to monitor the long-distance transport over the North Pacific. This study reports an unexpectedly strong influence of vegetation fires, linked with climate variability, on global tropospheric chemistry and proves once more how complex the interactions in the climate system are. 相似文献
104.
刘永勤 《渭南师范学院学报》2011,(12):42-45
高速PCB中,由于过孔数量较多导致信号产生严重畸变.文章首先分析了过孔对高速信号质量的影响,然后通过在过孔周围添加去耦电容器来抑制同步开关噪声(SSN).结果表明,在过孔周围添加去耦电容器可以有效地减小同步开关噪声,使得信号波动峰值减小,提高了信号质量. 相似文献
105.
曹福德 《山东商业职业技术学院学报》2011,11(4):54-57
当前,我国高校毕业论文(设计)存在抄袭、拼凑成风的不良现象,结合高职院校计算机专业毕业论文指导工作的现实情况,有针对性地提出了基于工作过程的改革方法,在实践中让学生自主选题,形式上不拘一格,并且规范写作与指导流程,使得毕业论文(设计)真正地为学生服务。 相似文献
106.
澳大利亚国家图书馆展览政策研究 总被引:1,自引:0,他引:1
[目的/意义]国内图书馆对展览政策的研究较少,而国外图书馆在相关领域有比较成熟的做法。研究国外图书馆展览政策有助于促进国内图书馆展览工作的开展。[方法/过程]通过对澳大利亚国家图书馆展览政策与展品租借政策文本的梳理与研究,探索其有益做法对我国图书馆的启示。[结果/结论]我国图书馆应从4方面完善展览工作:①重视展览工作的组织建设;②重视对展览原则的研究;③结合国家文物保护政策制定展品借出政策;④结合我国实际制定展品借入政策。 相似文献
107.
The development of artificial intelligence (AI) technology expands the boundary of business practice, inducing the emergence and application of business intelligence (BI) that has promoted the transformation of information techniques to optimize business decision and operation. However, there is a lack of theoretical consensus and measurement of the technology embedded in BI at present. This study exploratively develops the Sense-Transform-Drive (STD) conceptual model of BI based on dynamic capabilities theory and organizational evolutionary theory to explain the core BI capabilities. By using factoring analysis and structural equation modeling analysis, we extract the latent constructs and empirically verify the validity of the STD model and further examine the correlation and mode of interaction of the three core BI capabilities and the impact of BI application on firm performance in the real economy with a sample contextual to Chinese business practices. The study results show that there are direct and high-intensity cumulative positive effects among the structural components of the STD conceptual model and BI-related dynamic capabilities can enhance operating efficiency and firm performance. 相似文献
108.
The present study aims at describing the psychological complaints reported, as a part of the criminal investigation process, by the victims of sexual abuse as a part of the criminal investigation process, without attempting at reaching a medical diagnosis; and it discusses the relation of these reports with variables such as victim's gender, age and relation to the offender, type and duration of abuse, and parental marital status of the victim. Data is obtained from the statements of childhood sexual abuse (CSA) victims under the age of 15, as taken by Istanbul Juvenile Justice Department between the years 2009 and 2012. The sample consists of 175 cases with a total of 202 victim statements. Through the use of content analysis, the main and sub-categories of themes of the statements were determined. By means of the evaluation of the psychological condition of victims, we evaluated them in two categories: psychological complaints including self-harm and risk taking behaviors and psychological complaints with no self-harm and risk taking behaviors. The statistical analyses yield significant relations between the psychological complaints and children's parental marital status. Analysis of initial statements of sexual abuse victims is important as it may greatly contribute to professionals diagnosing and treating psychological complaints of these victims. It is essential that victims of sexual abuse should receive immediate psychological support starting with the criminal investigation process. 相似文献
109.
Michelle M. Wu 《Legal Reference Services Quarterly》2017,36(2):51-73
Digitize-and-lend library projects can benefit societies in multiple ways, from providing information to people in remote areas or with physical disabilities to facilitating the sharing of library resources with information-poor communities. This article explores the potential of digitize and lend as well as outlines how projects can be undertaken in a manner respectful of the balance of copyright. 相似文献
110.
Due to the importance of education for sustainable heritage preservation, it is imperative to pay attention to how heritage is taught in the education system. As a multicultural country with a rich cultural heritage, Malaysia is home to four world heritage sites. This paper investigates Malaysia's new primary school curriculum to determine to what extent the core curriculum cultivates an awareness of and sense of respect for heritage. The results reveal a focus on Malaysian intangible cultural heritage in some core subjects, such as history, Bahasa Malaysia, art, and music education. 相似文献