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单螺杆挤出过程亚宏观固相破碎理论 被引量:4
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作者 何红 朱复华 《工程塑料应用》 CAS CSCD 北大核心 2002年第7期22-24,共3页
基于宏观和亚宏观可视化技术,对单螺杆挤出机挤出过程中物料熔融后期的固相破碎现象提出了渗流模型,并对固体床破碎现象进行了细观解释。研究表明,渗流对固体床强度具有削弱作用,固相破碎发生在固-液界面处。应用渗流模型计算得到的固... 基于宏观和亚宏观可视化技术,对单螺杆挤出机挤出过程中物料熔融后期的固相破碎现象提出了渗流模型,并对固体床破碎现象进行了细观解释。研究表明,渗流对固体床强度具有削弱作用,固相破碎发生在固-液界面处。应用渗流模型计算得到的固相破碎点符合实际情况。 展开更多
关键词 单螺杆 挤出过程 亚宏观 固相破碎 理论 渗流模型 粒子熔融 可视化
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脆性短纤维增强复合材料亚宏观模型及损伤本构关系 被引量:1
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作者 刘洪秋 梁乃刚 夏蒙棼 《中国科学(E辑)》 CSCD 2000年第1期29-38,共10页
基于随机分布短纤维与基体损伤的物理机制与统计描述 ,针对长径比、刚度模量与强度都比较大的脆性短纤维增强复合材料 ,提出了一种亚宏观材料模型 ;考虑了纤维与基体的损伤统计规律、损伤诱发的各向异性与损伤率等因素对材料宏观力学行... 基于随机分布短纤维与基体损伤的物理机制与统计描述 ,针对长径比、刚度模量与强度都比较大的脆性短纤维增强复合材料 ,提出了一种亚宏观材料模型 ;考虑了纤维与基体的损伤统计规律、损伤诱发的各向异性与损伤率等因素对材料宏观力学行为的影响 ,导出了亚宏观损伤本构方程 .还以短玻璃纤维增强聚丙烯复合材料为例 ,对损伤诱致各向异性与损伤率效应及初始取向分布对材料宏观力学性能的影响进行了定量分析 ;理论预测与文献中提供的实验结果良好吻合 . 展开更多
关键词 短纤维增强 复合材料 亚宏观模型 损伤本构方程
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小议中医学的“三把宝剑”
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作者 朱良春 《江苏中医药》 CAS 北大核心 2007年第2期56-57,共2页
偶读北京医科大学、中国协和医科大学联合出版社编辑出版的《分子生物学前沿技术》对“中医学”的诠释,很有启发,也甚受鼓舞。
关键词 中医学 宏观平衡 模糊逻辑 亚宏观调节
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企业家与我国贫困地区的经济开发
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作者 曹阳 《农业经济问题》 1987年第9期12-15,共4页
1 与贫困和不发达作斗争,是世界性的重大课题。从世界经济的宏观看,中国尚处于不发达的“南方国家”之列,消灭贫困,建设小康社会是中国现时代经济发展的主旋律。就中国经济这一亚宏观看,中国内部又有与世界“南北问题”相对应的“东西... 1 与贫困和不发达作斗争,是世界性的重大课题。从世界经济的宏观看,中国尚处于不发达的“南方国家”之列,消灭贫困,建设小康社会是中国现时代经济发展的主旋律。就中国经济这一亚宏观看,中国内部又有与世界“南北问题”相对应的“东西问题”。发达地区的经济发展与贫困地区的经济开发,构成了当代中国经济发展的二重协奏曲。 展开更多
关键词 贫困地区 经济开发 建设小康社会 企业家 中国经济发展 世界经济 世界性 亚宏观 协奏曲 自然经济
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所有制结构与效益速度
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作者 张亚斌 《湖南师范大学社会科学学报》 北大核心 1995年第1期60-66,共7页
人们一般将所有制结构仅仅理解为各种所有制形式在国民经济中的比例构成,这是欠全面与准确的。所有制结构的主要内容应有宏观、亚宏观、微观三个层面,它们对效益速度将产生深刻的影响。为了保证效益速度的实现,我们必须进行所有制结... 人们一般将所有制结构仅仅理解为各种所有制形式在国民经济中的比例构成,这是欠全面与准确的。所有制结构的主要内容应有宏观、亚宏观、微观三个层面,它们对效益速度将产生深刻的影响。为了保证效益速度的实现,我们必须进行所有制结构的重组。大力发展混合所有制经济形式,对实现国民经济的高效益增长将产生极大的促进作用。 展开更多
关键词 所有制结构 宏观 亚宏观 微观 重组 效益速度
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Economic growth and unemployment in East Asia
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作者 Byung Woo Kim 《Chinese Business Review》 2009年第10期38-52,63,共16页
Barro and Sala-i-Martin (2004) analyzed the empirical determinants of growth. The data used in this paper consists of panel data of several macroeconomic variables observed for 55 years 0950-2004) in six East Asian... Barro and Sala-i-Martin (2004) analyzed the empirical determinants of growth. The data used in this paper consists of panel data of several macroeconomic variables observed for 55 years 0950-2004) in six East Asian countries and regions. Following the implications of semi-endogenous growth theory, the author regressed output growth on the determinants of steady-state income. The estimation and test results suggest the existence of significant relationship between steady-state income and (trend weighted) R & D input both in Japan and South Korea. In addition, following Cellini (1995), the author also considers cointegration and error-correction methods as the growth regression of East Asian countries. Meanwhile, Chang, et al (2004) derived the conclusion that the decreases in reallocation shocks are main factor in a downward trend in natural rate of unemployment for South Korea. The author extends this analysis using structural VAR to other Asian countries and regions, Japan and Taiwan region. Impulse responses show that the growth of production in Korea and Taiwan reduce unemployment, but, in Japan, this raises unemployment. 展开更多
关键词 growth regression East Asian countries and regions R D input UNEMPLOYMENT
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Macroeconomic Impacts of Contemporary Electricity Reform: 19 OECD and Seven Australian States
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作者 Reza Fathollahzadeh Aghdan~ Deepak Sharma +1 位作者 Mohsen Al-Hajji Talat Ulussever 《Journal of Energy and Power Engineering》 2013年第5期949-962,共14页
This paper examines the impacts of market-oriented electricity reform on macroeconomic variables. It develops an ad hoc econometric model for this purpose, using a panel data of 19 developed countries plus seven Austr... This paper examines the impacts of market-oriented electricity reform on macroeconomic variables. It develops an ad hoc econometric model for this purpose, using a panel data of 19 developed countries plus seven Australian States for the period of 1970-2008. Significance of the impacts is firstly tested against three distinct institutional features of electricity reform, namely: (1) organizational restructuring (i.e., functional unbundling of traditionally vertically integrated industry); (2) market restructuring (introduction of mandatory bid-based spot market); and (3) privatization. The extents of the impacts are, then, quantified in terms of relative contribution of such institutional changes to aggregate output growth in short-run, medium-run and long-run. The results reveal that only functional unbundling has made significant contribution to output growth. The results, further, specify that functional unbundling has made, on average, an additional 0.06% and 2.7% contribution to output growth rate in medium-run and long-run respectively. 展开更多
关键词 Electricity market reform electricity consumption macroeconomic growth electricity-economy nexus.
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The Seaweed Business Development in Indonesia 被引量:1
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作者 Djusdil Akrim 《Journal of Shipping and Ocean Engineering》 2014年第7期198-202,共5页
In Indonesian marine area about 555 species of seaweed have been identified and of these 55 species are being commercially utilized and have been successesfully cultivated. Three varieties of macro algae have been mos... In Indonesian marine area about 555 species of seaweed have been identified and of these 55 species are being commercially utilized and have been successesfully cultivated. Three varieties of macro algae have been most successfully cultivated, i.e., Eucheuma cottony, Eucheuma spinosum and Gracilaria verucosa. The global financial crisis has reduced the worldwide demand for carrageenan by 20-30%. Demand continues to be slow and there is little evidence so far that this situation will change in the short term. There are signs, however, that demand might start to pick up on the 1st quarter of next year but is not expected to meet the same level as experienced during 2008. Based on survey data, the is about 1.2 million ha which centered around 15 provinces. In potential area of Indonesian coastal water for seaweed cultivation these areas, the production of Eucheuma cottonii (Kappaphycus alvarezii (Doty)) and Eucheuma spinosum (Eucheuma denticulatum (N. L. Burman) F. S. Collins & Hervey) has amounted to around 42% of the supply. These natural resources provide excellent prospects for future development of the seaweed business in Indonesia. 展开更多
关键词 SEAWEED CULTIVATION EUCHEUMA CARRAGEENAN BUSINESS Indonesia.
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Effect of School-Based Income Generating Activities on the Financial Performance of Public Secondary Schools in Kenya
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作者 Paul A. Odundo Charles M. Rambo 《Chinese Business Review》 2013年第6期375-394,共20页
This study was conducted to determine the value added by Income-Generating Activities (IGAs) on the financial performance of public secondary schools, in terms of assets, liability portfolio, and net worth. Secondar... This study was conducted to determine the value added by Income-Generating Activities (IGAs) on the financial performance of public secondary schools, in terms of assets, liability portfolio, and net worth. Secondary school managers have the gigantic task of balancing meager resources between subsistence and development needs as well as good performance in national examinations. However, macro-economic shocks such as inflation, fuel shortage, and crop failure, among others, often militate against the success of public schools. School-based IGAs enable public schools to cope with external economic shocks, without necessarily passing down budgetary adjustments to parents. However, the country lacks a clear policy guideline to facilitate the initiation, management, accounting, reviewing, and financial reporting of IGA projects. Besides, there is no documented information regarding the value added by IGA initiatives to the financial performance of public secondary schools. The study found that IGA and non-IGA schools were significantly different in terms of category, student population, age, annual income, and number of paid workers. Schools having IGAs were 1.9 times more likely to own as many assets as schools not having IGAs. Besides, IGA schools were about 2.2 times less likely to have their liability in excess of the median threshold. Regarding net worth, the study found that schools having IGAs were about 2.1 times more likely to be operating above the median threshold; suggesting that schools having IGAs were wealthier than non-IGA schools. Based on the findings, this study concludes that IGA projects were beneficial to schools by improving the ability of schools to accumulate assets and manage their liabilities. The study recommends the need to: formulate an appropriate policy framework to guide and standardize IGA activities; initiate suitable training programs for school IGA managers; as well as engage business development managers to advice schools on IGA matters. 展开更多
关键词 income-generating activities financial performance public secondary schools education financing macro-economic shocks
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Effect of Macro Factor Volatility on the Returns of Financial Sector in Southeast Asian Stock Markets
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作者 Siriwun Wongsrida Prasert Chaitip 《Chinese Business Review》 2014年第1期28-33,共6页
The emphasis of this study is on the practice of the Pooled Mean Group (PMG) estimators to investigate the magnitude of macroeconomic performances: Real Gross Domestic Product (RGDP), Foreign Exchange Rate (EX)... The emphasis of this study is on the practice of the Pooled Mean Group (PMG) estimators to investigate the magnitude of macroeconomic performances: Real Gross Domestic Product (RGDP), Foreign Exchange Rate (EX), and Deposit Interest Rate (DINT) affecting on the rate of financial sector returns in Southeast Asian Stock Markets including Stock Exchange Of Thailand (SET) index (Thailand), the Kuala Lumpur Composite Index (KLSE) index (Malaysia), Financial Times Share Index (FTSI) (Singapore), Philippine Stock Exchange (PSE), and the Jakarta Composite Index (JKSE) (Indonesia). The Panel Autoregressive Distributed Lag (Panel ARDL) is applied to model the relations. The study applies the Levin, Lin, and Chu (LLC) test (2002) and Im, Pesaran, and Shin (IPS) test (2003) to investigates a set of time series data to examine whether the determinants and the rate of financial sector returns contain a unit root, the next step is investigated the cointegration and causality relationship of the determinants of financial sector influencing on long-run rate of returns of financial sector in Southeast Asian Stock Markets. 展开更多
关键词 rate of returns financial sector Southeast Asian Stock Markets panel unit root Panel AutoregressiveDistributed Lag (Panel ARDL)
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Harmful Effects on African Clawed Frog (Xenopus laevis) Reproduction as Expression of High Water Phosphates Levels
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作者 Marco Campolo Francesca Spano Maddalena Iannaccone 《Journal of Agricultural Science and Technology(A)》 2015年第7期632-638,共7页
Amphibians are considered as reliable indicators of environmental quality. In Europe, a general decline of amphibians population parallels a worldwide decline, and some of the factors which are thought to be responsib... Amphibians are considered as reliable indicators of environmental quality. In Europe, a general decline of amphibians population parallels a worldwide decline, and some of the factors which are thought to be responsible to this decline are habitat loss, introduction of exotic species, disease and decreasing water quality. Recent investigations suggest that these eutrophic conditions may be associated with frog reproduction problems. Water quality criteria settled for the different species of amphibians do not currently exist, but in the present paper, the authors report their observation about water phosphate concentrations in association with hipofertility in African clawed frogs (Xenopus laevis). The study considered two different groups of African clawed frog showing hypofertility (22 patients) hosted in captivity. The animals were visited, and the filtration systems functionality and the water quality were checked, i.e., temperature, pH, ammonia, nitrite, nitrate, phosphates, hardness and alkalinity. In the first group, it was decided to perform ultrasound scans, parasitological tests on fecal samples, and microscopical/macroscopical examination, as well as microbiological analysis on collected oocytes. In the second group, only fecal samples were collected in order to perform parasitologiacal exams. No pathological findings were showed by veterinary tests. Water changes were carried out in both facilities and after two months, the fertility in African clawed frogs improved, evidencing the involvement of phosphates values in the onset of the problem and even more in its resolution. More studies are needed to further define this correlation. 展开更多
关键词 Xenopus laevis water phosphates level oocytes' quality.
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The Rise of Islamic Values in Media: A Three Dimensions Analysis of Film Industry in Indonesia
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作者 Muhamad Fadhil Nurdin Fitaha Aini +1 位作者 Vina E ffendi Mohamad Saleeh Bin Rahamad 《Journalism and Mass Communication》 2016年第8期455-468,共14页
This article focuses on the rise of Islamic values in media with concern to the film industry in Indonesia. In this nation, 88.22% of 254 million of the population are Muslims. However, this substantial quantity is bu... This article focuses on the rise of Islamic values in media with concern to the film industry in Indonesia. In this nation, 88.22% of 254 million of the population are Muslims. However, this substantial quantity is burden some if Muslims have a lack of appreciation to history and are intellectually weak. In addition, cultural degradation due to the rapid changes in information & communication technology diminishes moral and ethics of society. The growth of film industry in the Soeharto era which curb freedom of expression and media resulted in films which were more oriented to comedy, horror, and vulgar. The aims of this study specifically are: (1) to identify the film industry (macro) in the context of challenge of Indonesian Muslim in social and culture; (2) to analyze the political interests of film production company owner (meso) in his films; (3) to conduct textual analysis (micro) of two films which include Islamic values in the dialogues. Two films, Nagabonar Jadi 2 (Nagabonar Become 2) and Alangkah Lucunya Negeri lni (How Funny This Country ls), were selected as samples for their contents that fearlessly criticize corrupt governance and promote integrity and good deeds. The three dimensions of critical discourse which was proposed by Norman Fairlough (1992) was used to evaluate the local film industry from the perspective of macro, meso, and micro. The macro-analysis found that Indonesian films act should be modified to keep up with modernized and recent trends in media and film industry. The meso analysis showed that competition between film companies are very though, however, film quality determines the popularity of the company in public. According to the company owner's agenda, Deddy Mizwar determines the quality of films produced, instead of quantity, as apriority. Thus, in post-reform era, the freedom of expression which enforced by the Act No. 9 of 1998, the company start producing Islamic films. Deddy Mizwar concerns for society are not only through the media but also political. He recently elected as the deputy governor of West Java province with the full support of an Islamic Party (Partai Keadilan Sejahtera). The textual studies have found similarities of the Islamic values in the content of the two films which are tawaqal (trust and reliance on God) and Taqwa, the pursuit of knowledge, respecting for the elderly, and belief in the Hereafter. 展开更多
关键词 film studies Islamic values macro analysis meso analysis miso analysis Indonesia
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对假说类型的探讨
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作者 邢新力 《中国社会科学院研究生院学报》 1984年第1期34-38,共5页
假说作为自然辩证法的一个范畴,具有重要的方法论的意义。本文由此出发,通过对科学发展历史的考察,把假说区分为三大基本类型,即存在性假说、描述性假说和解释性假说,并对它们的内容、意义和相互关系作了说明。文章强调,只有以辩证唯物... 假说作为自然辩证法的一个范畴,具有重要的方法论的意义。本文由此出发,通过对科学发展历史的考察,把假说区分为三大基本类型,即存在性假说、描述性假说和解释性假说,并对它们的内容、意义和相互关系作了说明。文章强调,只有以辩证唯物主义的认识论为指导,才能科学地、正确地运用假说方法。 展开更多
关键词 假说 解释性 描述性 存在性 成花素 亚宏观 《自然辩证法》 因果关系 《哲学笔记》 物质世界
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