6,764 research outputs found
The Effect of Rainfall and Post-revolutionary Land-use Changes on Sediment Yield in Weixi Basin, Yunnan, China : New insights from multi-temporal land-use classification and radionuclide analyses
This paper looks at the dynamic interphase connecting post-revolutionary politics, modern land use practices, precipitation patterns, basin slope, and sediment yield records in Weixi basin, a small mountainous watershed in Southwestern China with a total upstream area of 198 m2. The goal is to identify what processes, climatic or not, account for the changes in local sediment yield and erosion budget. Weixi basin has an average annual sediment yield of 175 ton/km2 with two anomalously large peaks in 1979 and 1984. Precipitation is moderately correlated with sediment yield at interannual scale. It also affects seasonal fluctuations in sediment yield as major sediment loading events correspond to spring snowmelt and monsoon rainfall. However, there is no long-term trend in precipitation that could explain the peak in sediment yield. Land use/land cover classification shows an average of 22.8% bare land in Weixi basin, but no definitive conclusion about temporal changes could be drawn yet due to the discrepancy in imagery resolution. Short-lived radionuclide analyses show there is no correlation between upstream land use and depth of erosion, whereas slope is a moderate control for erosion depth
Comparative Study on Cultural DNA of Chinese and Western Sketch
In this paper, according to the analects of “Lunyu”, we try to interpret in concept of sketch. Depending on the clue of the development process for sketch, we contrasted western sketch with Chinese in order to analyze completely different points in their cultural DNA. Based on the conclusion, we still reflect Chinese modern sketch and put forward the idea that we should observe, think and explore for innovation in the field of sketch based on our own cultural DNA, eliminating the distractions and impetuous feeling in study of culture
The Effect of Rainfall and Post-revolutionary Land-use Changes on Sediment Yield in Weixi Basin, Yunnan, China : New insights from multi-temporal land-use classification and radionuclide analyses
This paper looks at the dynamic interphase connecting post-revolutionary politics, modern land use practices, precipitation patterns, basin slope, and sediment yield records in Weixi basin, a small mountainous watershed in Southwestern China with a total upstream area of 198 m2. The goal is to identify what processes, climatic or not, account for the changes in local sediment yield and erosion budget. Weixi basin has an average annual sediment yield of 175 ton/km2 with two anomalously large peaks in 1979 and 1984. Precipitation is moderately correlated with sediment yield at interannual scale. It also affects seasonal fluctuations in sediment yield as major sediment loading events correspond to spring snowmelt and monsoon rainfall. However, there is no long-term trend in precipitation that could explain the peak in sediment yield. Land use/land cover classification shows an average of 22.8% bare land in Weixi basin, but no definitive conclusion about temporal changes could be drawn yet due to the discrepancy in imagery resolution. Short-lived radionuclide analyses show there is no correlation between upstream land use and depth of erosion, whereas slope is a moderate control for erosion depth
Data analysis and application guidelines of particle gel treatments
“Water production is a severe worldwide issue in mature oilfields, which results in shortening the economic life of oil and gas wells. Particle gel have been widely applied in mature oilfields to improve reservoir sweep efficiency and control water production. To date, more than 10,000 injection wells were successfully treated by particle gels. However, considerable uncertainty still exists regarding to where and how particle gel treatments can be best applied.
The main objective of this study is to provide application guidelines and prediction model for particle gel treatments through data analysis. In this study, four particle gel treatment datasets have been constructed based on 206 PPG experiments, 80 microgel experiments, 678 PPG-treated injection wells, and 154 microgel-treated injection wells. The data from laboratory experiments were analyzed to understand the mechanisms of particle gel treatments. Descriptive statistical analysis and regression analysis were applied to analyze field application data. The results showed that a large volume of particle gel injection with a low concentration was often used for successful treatments. The treated volume highly depended on the daily water production rate. Incremental oil production increased with the amount of injected particles and the better treatment efficiency always came from the injection wells with offset production wells having a higher liquid production rates. Additionally, a prediction model was built based on regression analysis to predict the incremental oil production for particle gel treatments in oilfields. Overall, this study provides valuable insight into particle gel treatment design and serves as a guide for PPG applications in the mature oilfields”--Abstract, page iii
Particulate matters: How trust and media use impact risk perceptions of air pollution in Beijing
Trust is an important factor within the formation of risk perceptions, but is easily broken and difficult to rebuild. This study seeks to determine the long-term influence of a trust-breaking event with regard to an environmental risk. Specifically, this study explores how people in Beijing perceive the risk of PM2.5 air pollution and which sources they now use and trust for this information two years after the official media was criticized for not being trustworthy in its dissemination. Results find that respondents perceived PM2.5 air pollution as a significant threat across nine risk dimensions and that social media were most often used to obtain risk messages regarding PM2.5 air pollution. Relationships regarding trust were weak. More trusted sources were expected to be used more often for PM2.5 information, but this relationship was only found for interpersonal sources. Likewise, trust was expected to be related to risk perceptions, but was related with only a handful of risk factors, none of which were consistent across sources. Individuals more impacted by the trust-breaking event were expected to also exhibit less change of trust over time, but this was not found. This general lack of trust relationships may be due to an invalid measure of trust caused by fear of repercussion for criticizing governmental channels in an online survey
Study on SIS Overall Planning of Characteristic School Culture in China
In this paper, School Identification System (SIS) overall planning and design are studied on background of the new round of education reform launched by Chinese government. Based on the theory of Corporation Identification System (CIS) design and teenagers’ psychology, the way of SIS overall planning and design application is researched, and we discuss the implementation of SIS overall planning under specific case in Sichuan province of China for history and regional culture characteristics
A case study on Chinese high school teachers: the relationships between teachers’ epistemic beliefs and their teaching practice in Chinese examination-oriented context
Many studies have shown that it is important to understand teachers' epistemic beliefs in educational reform because their epistemic beliefs often influence teachers' behaviours. Based on previous study, there were two kinds of teachers’ epistemic beliefs: reflective-collaborative and knowledge transmission. Teachers’ teaching practices could be learning-focused or content-focused. The aim of this study was to find out Chinese high school teachers’ epistemic beliefs and their teaching practices and how they were related to each other.
In this study, the participants were 10 high school teachers from China. Interviews were conducted online in their mother tongue. The interview questions were adapted from previous research, and content analysis was used to analyze the transcripts.
The results showed that the teachers held both epistemic beliefs. Metacognition and reflection were important, but so was the transmission of knowledge. In their self-reports, teachers would use different teaching methods depending on the situation, trying to find a balance between their own beliefs and the exam-oriented social context. For most teachers, there was no strong link between teachers' epistemic beliefs and practices, which might be caused by the socio-cultural context and the lack of adequate competencies.许多研究表明,在教育改革中了解教师的认知信念是非常重要的,因为教师的认知信念常常影响教师的行为。根据以往的研究,教师的认知信念有两种:反思-合作和知识传递。教师的教学实践可以学习为中心,也可以内容为中心。本研究旨在了解中国高中教师的认知信念和他们的教学实践,以及两者之间的关系。
本研究的参与者是10名来自中国的高中教师,访谈是以他们的母语即中文在线进行的。访谈问题改编自以前的研究,访谈记录采用内容分析法进行分析。
研究结果表明,教师可能同时持有两种认知的信念。他们认为,让学生参与到知识建构的过程中来很重要,但知识的传递也很重要。在教师们的自我报告中提到,他们会根据不同的情况使用不同的教学方法,这些老师试图在自己的教育信念和以考试为导向的社会文化背景之间找到一个平衡点。对大多数教师来说,教师的认知信念和教学实践之间没有紧密的联系,这可能是由于社会文化背景和缺乏足够的能力造成的
Do socio-cultural issues matter? A qualitative psychological study of Chinese criminals in Aotearoa/New Zealand
Acculturation literature on Chinese immigrants and international students indicates that low language proficiency, over-emphasis on losing face and the consequent acculturative stress, may hinder the development of both language skills and socializing competence and lead to psychological and behavioural dysfunction. Contemporary research into the socio-cultural issues of immigrant prisoners, particularly Chinese prisoners, is sparse in New Zealand. Thus, some baseline information on the existence of socio-cultural issues and their related acculturative stress of this group of individuals is needed. The purpose of this study was to find out whether the socio-cultural issues, particularly language barriers, social isolation, anti-social peer pressure and acculturative stress were present among these Chinese prisoners prior to their offending. In addition, the researcher intended to discuss the possible links between these sociocultural issues and the participants’ offending in New Zealand society. The individual interviews of 13 Chinese inmates, or 13% of the total Chinese population in New Zealand prisons were conducted with the support of the Department of Corrections. The data suggested that low language proficiency and face-protection-oriented voluntary separation from the host society and the resulting social isolation and anti-social peer influence were major issues for most of these individuals. Many of them expressed very negative emotions or mistrust towards others and meaningless life experience with little support both from their family and the host society. Consequent depression and anxiety just before their offending were evident in the responses, particularly from some female prisoners. As a result, it is suggested that the socio-cultural issues that the participants in this study had encountered, may have contributed to their undermined psychological well-being and behavioural dysfunction and contributed to the resultant criminal action
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