苏里格气田苏X区盒8段储层测井二次解释及应用

就苏里格气田苏X区盒8段储层测井二次解释进行了研究。在阐述测井资料预处理的基础上,对储气层孔隙度解释、渗透率解释、泥质含量解释、含气饱和度解释的模型与有效厚度下限的确定作了论述。     

Mapping changes in land use/land cover and prediction of future extension of bowé in Benin,West Africa

Desertification and land degradation are worldwide problems affecting soil, vegetation and the livelihoods of rural populations. Bowal (plural bowé) is a particular form of degraded land that occurs in tropical regions and leads to the exposure of ferricretes, which are unsuitable for farming. Bowé are more common on farmland and degraded savanna. Changes in land use/land cover were used to map a region of 6.7 million ha in northern Benin, West Africa in 1975, 1990 and 2010. The changes observed during these periods (1975–1990, 1990–2010 and 1975–2010) were used to predict the occurrence of bowé in the period up to 2050 using Markovian chain analysis. The results showed a considerable change in land use/land cover during the three periods. The types of land on which bowé occur (farmland and degraded savanna) increased in northern Benin by 5.4% per year during the period 1975–1990 and 9.5% per year during the periods 1990–2010, while the natural vegetation (forest, woodland and tree savanna) decreased by the same amount. The future scenarios also predicted the same trend. In the period 1975–1990, 1.28 million ha (26%) of natural vegetation was converted to degraded savanna and farmland while 2.23 million ha (53%) of natural vegetation was converted to degraded savanna and farmland in the period 1990–2010. Based on the dynamics recorded during the period 1975–1990 and 1990–2010 respectively, a total of 1.28 million ha (26% of the natural vegetation that was present in 1975) and 1.29 million ha (31% of the natural vegetation that was present in 1990) will be converted to farmland and degraded savanna in the study area by 2050.Thus bowalization will persist and increase in the period up to 2050. The natural vegetation could disappear if protection and restoration measures are not taken. It is thus important to take measures to stop the degradation and to implement programs to restore soils on bowé based on the soil and water conservation techniques used on highly degraded West African soils, such as zaï pit and stone rows with grass strips. Some native plants species adapted to bowalization and resistant to climate change in northern Benin (e.g. Asparagus africanus, Andropogon pseudapricus and Combretum nigricans) should be used in association with soil and water conservation techniques on bowé.     

Subterranean Commodification: Informal Housing and the Legalization of Basement Suites in Vancouver from 1928 to 2009

This article draws on Margaret Radin's theorization of ‘contested commodities' to explore the process whereby informal housing becomes formalized while also being shaped by legal regulation. In seeking to move once‐informal housing into the domain of official legality, cities can seldom rely on a simple legal framework of private‐law principles of property and contract. Instead, they face complex trade‐offs between providing basic needs and affordability and meeting public‐law norms around living standards, traditional neighbourhood feel and the environment. This article highlights these issues through an examination of the uneven process of legal formalization of basement apartments in Vancouver, Canada. We chose a lengthy period—from 1928 to 2009—to explore how basement apartments became a vital source of housing often at odds with city planning that has long favoured a low‐density residential built form. We suggest that Radin's theoretical account makes it possible to link legalization and official market construction with two questions: whether to permit commodification and how to permit commodification. Real‐world commodification processes—including legal sanction—reflect hybridization, pragmatic decision making and regulatory compromise. The resolution of questions concerning how to legalize commodification are also intertwined with processes of market expansion.     

人脸比对智能程序的开发实践

在百度平台创建应用,获得API Key和Secret Key。选用HTTP访问方式,获得人脸比对的Access_token。利用Python代码向URL发送请求,获取了“人脸比对”结果,通过数据抓取显示了比对结果。利用Tkinter设计的GUI界面,用户只需要选择两张人脸图片,可以立即获得比对结果。     

Security regulations,access to capital markets,and firm performance: Evidence from China

This study explores the cost of security regulations in China, where firms are required to meet a certain profitability benchmark before applying for permission to raise more equity via secondary equity offerings (SEOs). Using a difference-in-differences setting, we show that firms affected by the regulation (i.e., firms with high external financing demands (EFD) but profitability lower than the regulatory requirement) significantly underperform their counterparts, while unaffected firms do not. The affected firms’ performance decline increases (decreases) when the requirement of profitability is more (less) restricted. Consistently, the three-day cumulative abnormal return (CAR) of firms with high EFD is significantly negative (positive) when the regulation is tightened (loosened). Our study provides evidence on how the cost of regulation affects companies that have growth opportunities.     

论中职教师到企业实践进修难点——从中职教师到企业实践进修的难点看建立专业工作室的必要性

文章通过对当前中职院校教师轮训的现状分析探讨其中存在的问题,提出成立专业工作室来解决教师实践的有效策略。     

浅谈工程项目的二次经营

在《建设工程施工合同(示范文本)》大力推行后,对二次经营既赋予更多的内涵也提出了更加严格的要求。如何全面有效地搞好二次经营是施工企业经营管理工作的一个重要环节,笔者根据参加工程项目管理中发生的二次经营案例,对施工单位搞好工程项目二次经营谈了六点认识:1正确理解二次经营,增强二次经营意识;2熟读合同条款,掌握二次经营依据;3收集原始资料,充实二次经营证据;4执行二次经营规定,遵循二次经营程序;5编撰二次经营报告,论证二次经营权利;6讲究策略技巧,确保二次经营成功。     

城市供水的二次污染原因及治理

自来水经过一定的处理工艺,然后经过配送管网输送至各户。水在配送管网中流动的过程中,往往会受到管网、供水管道及附属设备的影响,造成二次污染。因此,要切实做好城市供水二次污染的防治工作,提高人们的生活质量。基于此,本文提出了城市供水二次污染的几点原因和一般性的治理对策。     

岩溶地质钻孔桩二次成孔护壁法施工技术

通过对大湖下行联络线岩溶地质钻孔桩施工出现问题的论述,结合岩溶地质钻孔桩常用的处理方法,提出了适应本区域岩溶地质环境的二次成孔护壁法在钻孔桩施工中的应用,并得到了成功的验证。     

企业对中职电商学生需求调查与分析

为了更好地推进中职电商专业的发展,培养适合企业需求的中职电商学生,笔者针对企业对中职电商学生的需求是什么这一问题,通过企业走访和发放调查问卷的形式,对企业进行一系列的调研,运用EXCEL软件对收集的数据进行分析,发现企业为学生提供的工作岗位、所需技能和个人综合素质等方面都发生新的变化,这些变化是随着电商的迅速发展而出现的。这就要求中职学校要做出相应的调整,鼓励学生毕业后继续学习,提高学历;着重培养学生吃苦耐劳、沟通能力等综合素质;开设满足企业岗位需求技能课程。