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Proceeding from the above purpose and thinking, the following of research contents is launched that: Chapter one is a part of the prolegomena, and mainly introduce the purpose, meaning, research background, documents survey in which the tax compliance discrimination models concerned. On the basis of the investigation of the critical to taxation, Chapter two reveals the index system, and uses the discriminating analytical method to judge taxpayers" credit, and embodies its standard and methods in judgments. On the disvovery of the investigating taxpayers" microeconomics behavior, Chapter three uses the econometrical modeling methods and data mining technology, establishes Logistic regression model, calculates taxpayer credit measure and gives the empirical analysis; Chapter four gives a work methods and suggestions in practical application of identifying models; It is a conclusion of this paper, which reaffirms the main achievements and viewpoints of this paper.
从以上目的和思路出发,本文研究内容如下方式展开:论文第一章为绪论部分,主要介绍纳税人诚信识别模型研究的目的、意义、研究背景、文献综述以及全文框架;第二章在纳税评估问卷调查基础上,提出纳税评估指标体系,并应用多元统计的判别分析方法来给出评判纳税人诚信,并具体给出其判断的标准与方法;第三章在考察纳税人微观行为基础上采用计量经济建模方法和数据挖掘技术,建立定量能测算纳税人诚信水平的Logistic回归模型,并作实证分析:第四章对比分析纳税评估模型实证研究结果,并就模型在实际应用中的工作方法、建议及进一步的研究方向展开讨论;最后为本文的结论,在该部分将再次重申本文研究的主要成果和观点。
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And an on-line adaptative training algorithm of the weights of neuron is given, which enhances fusion precision of the model, fault tolerance and adaptive ability for subsystems 4 In order to diagnose the soft fault of integrated system, a new fault detection method is proposed based on federated filter, which can detect fault of system in short interval and greatly enhance the method sensitivity to fault A fault diagnosis method of Dynamically Tuned Gyro baesd on parameter estimation of kinetics model of rotor, and signal pretreatment, parameter estimation and strategy of fault identification are studied in detail The method can locate fault of DTG correctly and effectively, which provides a new approach and idea for gyro fault diagonsis 5 In order to diagnose the hard fault of integrated system, fault tree analysis is studied on fault disgnosis of integrated system circuits, and the hardware and software of disgnosis system are developed, with faults located to main module and circuit For futhur diagnosis, an optimal measurement technology in detection of circuits is discussed by improving an algorithm based on information theory, and a pratical method based on half-split method is proposed.
针对组合系统的软故障诊断问题,提出了基于联合滤波模型的一种新的故障检测算法,给出了算法的理论推导过程,该算法能在较短的时间内检测出系统故障,提高了算法对故障的敏感度;研究了基于动调陀螺转子动力学模型参数辨识的故障诊断方法,就其中的信号预处理、参数辨识及故障决策方法等关键技术进行了详细的研究,该方法可以正确、有效地检测与定位动调陀螺故障,为陀螺故障诊断提供了新的途径和思路。 5。针对组合系统的硬故障诊断问题,研究了基于系统浅知识推理的故障树法在组合系统电路子系统故障诊断中的应用,开发了相关诊断系统的软硬件,故障可定位到系统的主要功能模块和电路板级。为了进一步的故障定位,研究了电路板故障的最优检测问题,完善了基于信息理论的优化算法,并提出了基于&对分法&的一种实用的优化算法,故障可定位到电路板的主要功能元件级。在组建的SINS/GPS组合系统实验平台上,针对上述研究内容,进行了大量的实验研究。
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Dealcoholization temperature markedly influences the surface area and porosity of the resultant MAO-supports. When the support was pretreated at lower or higher temperature, the corresponding MAO-support shows very low surface area;2.XRD and IR analyses indicate that MAO has reacted with the residual ethanol in the supports, which is an important manner to get MAO fixed on the carrier. Morever, XPS analyse indicates that MAO can also be coordinated with MgCl_2, which is another way to get MAO fixed on the support;3.ICP and EDX analyses indicate that dealcoholization temperature not only determined the element content on the solid catalyst, but also influences the element distribution on the carrier;4.The activities of the supported phenoxy-imine catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature. The support (MSP-5) obtained by treating MgCl_2·2.56C_2H_5OH at 160℃for 4 h, then modified by MAO is very effective for immobilizing complex 3, the resultant solid catalyst (MSPC-5) shows very high activity in ethylene polymerization, and its kinetics of polymerization is stable during the reaction process. Finally, PEs with spherical morphology and high bulk density (over 0.35g/ml) were obtained, without reactor fouling;5.In this work, polymerization conditions such as alkylaluminums, Al/Zr ratio, temperature and H_2 had a pronounced effect on the activity of MSPC-5 and properties of PE;(3). New MgCl_2-Supported Single-Site Catalysts for Ethylene PolymerizationIn this work, a kind of new MgCl_2 support was obtained by anhydrous MgCl_2 co-milled with solid MAO, and it is a creative contribution. Then some single-site catalysts were supported on the new MgCl_2 support, and the resulted solid catalysts were tested in ethylene polymerization, the results indicated that:1.XRD and IR analyses indicate that MAO does be coordinated with MgCl_2, which is in good agreement with the results obtained by XPS;2.co-mlling time had no obvious effect on the texture of support after 12 hours;3.In this work, MgCl_2 was co-milled with solid MAO for different hours, and then complex 3 was supported on these co-milled supports. It was found that co-milling time markedly influences the activity of solid catalysts, but it had negligible effect on the kinetic profile and the properties of resultant PE.
XPS研究结果表明,MAO不仅仅只和乙醇作用,MAO还与MgCl_2本身有一定的作用,这是一个极为重要的发现;3、通过ICP和EDX表征,发现载体的脱醇温度直接影响着元素在固体催化剂中的含量及分布;4、脱醇温度极大地影响着负载苯氧基亚胺类催化剂的活性和聚合物的性能,特别是原始载体经160℃活化4小时制备得到的固体催化剂MSPC-5的活性明显高于其他脱醇温度条件下制得的固体催化,并且催化剂寿命长,表现出稳定的动力学行为,最终获得了高堆密度(大于0.35g/ml)的球形聚乙烯颗粒;5、本文选择MSPC-5为研究对象,考察了聚合反应参数对催化剂的活性及其聚合物的影响,研究发现:不同的烷基铝对催化剂具有非常重要的影响,特别足TIBA对MSPC-5的助催化活性最高,烷基铝的加入量有一个较佳值,聚合温度为80度时活性最高,H_2的加入使催化剂的活性明显降低且聚合物的分子量也减小;、新型氯化镁载体负载单活性中心催化剂催化乙烯聚合本文创造性采用固体MAO与无水氯化镁直接进行共研磨,制备出了一种的新型的氯化镁载体,并将该载体用于多种单活性中心催化剂的负载化研究,研究表明:1、通过BET、XRD的表征,再次证实了MAO与MgCl_2之间具有直接作用,与XPS的研究结果相一致;2、当研磨时间高于12小时时,延长研磨时间对载体的结构没有显著的影响;3、将配合物3负载于共研磨时间不同的一系列载体上,乙烯聚合结果表明,尽管共研磨时间对负载催化剂的活性具有明显的影响,但是它对聚合物的性能以及催化剂的影响不明显。
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Dealcoholization temperature markedly influences the surface area and porosity of the resultant MAO-supports. When the support was pretreated at lower or higher temperature, the corresponding MAO-support shows very low surface area; 2.XRD and IR analyses indicate that MAO has reacted with the residual ethanol in the supports, which is an important manner to get MAO fixed on the carrier. Morever, XPS analyse indicates that MAO can also be coordinated with MgCl_2, which is another way to get MAO fixed on the support; 3.ICP and EDX analyses indicate that dealcoholization temperature not only determined the element content on the solid catalyst, but also influences the element distribution on the carrier; 4.The activities of the supported phenoxy-imine catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature. The support (MSP-5) obtained by treating MgCl_2·2.56C_2H_5OH at 160℃for 4 h, then modified by MAO is very effective for immobilizing complex 3, the resultant solid catalyst (MSPC-5) shows very high activity in ethylene polymerization, and its kinetics of polymerization is stable during the reaction process. Finally, PEs with spherical morphology and high bulk density (over 0.35g/ml) were obtained, without reactor fouling; 5.In this work, polymerization conditions such as alkylaluminums, Al/Zr ratio, temperature and H_2 had a pronounced effect on the activity of MSPC-5 and properties of PE;(3). New MgCl_2-Supported Single-Site Catalysts for Ethylene Polymerization In this work, a kind of new MgCl_2 support was obtained by anhydrous MgCl_2 co-milled with solid MAO, and it is a creative contribution. Then some single-site catalysts were supported on the new MgCl_2 support, and the resulted solid catalysts were tested in ethylene polymerization, the results indicated that: 1.XRD and IR analyses indicate that MAO does be coordinated with MgCl_2, which is in good agreement with the results obtained by XPS; 2.co-mlling time had no obvious effect on the texture of support after 12 hours; 3.In this work, MgCl_2 was co-milled with solid MAO for different hours, and then complex 3 was supported on these co-milled supports. It was found that co-milling time markedly influences the activity of solid catalysts, but it had negligible effect on the kinetic profile and the properties of resultant PE.
XPS研究结果表明,MAO不仅仅只和乙醇作用,MAO还与MgCl_2本身有一定的作用,这是一个极为重要的发现; 3、通过ICP和EDX表征,发现载体的脱醇温度直接影响着元素在固体催化剂中的含量及分布; 4、脱醇温度极大地影响着负载苯氧基亚胺类催化剂的活性和聚合物的性能,特别是原始载体经160℃活化4小时制备得到的固体催化剂MSPC-5的活性明显高于其他脱醇温度条件下制得的固体催化,并且催化剂寿命长,表现出稳定的动力学行为,最终获得了高堆密度(大于0.35g/ml)的球形聚乙烯颗粒; 5、本文选择MSPC-5为研究对象,考察了聚合反应参数对催化剂的活性及其聚合物的影响,研究发现:不同的烷基铝对催化剂具有非常重要的影响,特别足TIBA对MSPC-5的助催化活性最高,烷基铝的加入量有一个较佳值,聚合温度为80度时活性最高,H_2的加入使催化剂的活性明显降低且聚合物的分子量也减小;、新型氯化镁载体负载单活性中心催化剂催化乙烯聚合本文创造性采用固体MAO与无水氯化镁直接进行共研磨,制备出了一种的新型的氯化镁载体,并将该载体用于多种单活性中心催化剂的负载化研究,研究表明: 1、通过BET、XRD的表征,再次证实了MAO与MgCl_2之间具有直接作用,与XPS的研究结果相一致; 2、当研磨时间高于12小时时,延长研磨时间对载体的结构没有显著的影响; 3、将配合物3负载于共研磨时间不同的一系列载体上,乙烯聚合结果表明,尽管共研磨时间对负载催化剂的活性具有明显的影响,但是它对聚合物的性能以及催化剂的影响不明显。
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Each unitis of different biotic characters and displays different features of seawater composition during the time. 2 The black unit including a biotic extinction was caused by oceanic anoxic event. Crisis that deepwater keeled foraminifera encountered represents a ferocious anoxia in deep marine environment . Biotic recovery in gray unit reflects gradually improved marine circumstance. What the biotic extinction at the C/T boundary in black unit reflects an environmental mutation, whereas the gradual biotic change characterize the recovery of marine dissolved oxygen environment in a stepwise process. The red unit is the result of oxic deposition and characterized by extremely abundance of foraminiferal faunas, which reflects a high-oxidized marine circumstance. 3 As the most ordinary biotic index in paleoceanography researches, foraminifera represent anexcellent environmental indicator in this paper.
三套岩层表现出不同的生物特征,并指示出当时海水的不同性质。2黑层段是大洋缺氧造成的结果,生物大量灭绝,深层水具旋脊有孔虫的所遭受的危机反映出当时海洋深层水体严重缺氧的特征;灰层段中生物的恢复反映出海洋环境自缺氧事件之后的逐步改善过程,与黑层段反映的C/T 界线处生物绝灭反映的环境突变不同,灰层段生物特征的渐变指示出当时海洋溶解氧环境的恢复也是一个逐步的过程;红层段属于富氧沉积的产物,特征是有孔虫生物的极度繁盛,反映的是一种高氧化性的海洋环境。3有孔虫作为古海洋研究中最常用的生物指标,在本文研究中显示了良好的环境指示性。
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Based on the theories of rheology, Non-Newtonian Fluid Mechanics, petroleum chemistry, crystallography and pipeline technology etc. and sampling Huabei crudes, experimental indexes and programmes are drew out, integrating the oil properties and parameter analysis; in terms of the macro analysis of continuum mechanics, substantial experiments are conducted with HAAKE RS600 rotational rheometer and the rheological equation as well as the viscosity-temperature equation are further developed with tested rhrogramme and viscosity-temperature curve, respectively. Beased on the researches on thixotropic mechanism and thixotropy fluid property, hysteresis loop curve, structure failure and viscosity build-up curve as well as shear stress decrement curve for one type oil are first present in this paper. According to the theoretical researches and testing results, a novel thixotropy equation with τ=τ_∞e~ pattern, which is of hi-accuracy, few parameter and simplicity, is developed. Considering the influence of various parameters on rheological behaviour, depressant adding condition is optimized and experimental evaluation on BEM-5P is conducted, which further unrip its mechanism on the Huabei crude. A corresponding viable pipe transportion programmel is also recommended.
本文基于原油流变学、非牛顿流体力学、石油化学、结晶学、原油管输工艺学等理论,以华北原油为研究对象,结合原油物性及实验影响因素分析,制定出实验研究的评价指标及实验方案;从连续介质力学宏观分析的角度,利用HAAKE RS600高端旋转流变仪开展了大量的室内实验,并运用微观研究方法,测定了油样的流变曲线和粘温曲线,建立了流变方程和粘温方程;通过对触变性机理和触变性流体特征的研究,首次对华北原油测定出滞回环曲线、结构破坏与恢复粘时曲线、剪切应力裂降过程曲线,并在理论研究和实验结果的基础之上,建立了能定量描述含蜡原油剪切应力裂降过程的新型三参数触变模式τ=τ_∞e~b/(t+c,该模型具有精度高、参数少、实验简便且适用性强的特点;通过对含蜡原油流变性的影响因素理论研究,开展了加剂条件优选及BEM-5P降凝剂室内评价实验,进一步揭示了降凝剂对华北原油作用机理,在此基础之上,提出了华北原油管输的可行性方案。
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Based on the theories of rheology, Non-Newtonian Fluid Mechanics, petroleum chemistry, crystallography and pipeline technology etc. and sampling Huabei crudes, experimental indexes and programmes are drew out, integrating the oil properties and parameter analysis; in terms of the macro analysis of continuum mechanics, substantial experiments are conducted with HAAKE RS600 rotational rheometer and the rheological equation as well as the viscosity-temperature equation are further developed with tested rhrogramme and viscosity-temperature curve, respectively. Beased on the researches on thixotropic mechanism and thixotropy fluid property, hysteresis loop curve, structure failure and viscosity build-up curve as well as shear stress decrement curve for one type oil are first present in this paper. According to the theoretical researches and testing results, a novel thixotropy equationwith τ=τ_∞e~ pattern, which is of hi-accuracy, few parameter and simplicity, is developed.Considering the influence of various parameters on rheological behaviour, depressant adding condition is optimized and experimental evaluation on BEM-5P is conducted, which further unrip its mechanism on the Huabei crude. A corresponding viable pipe transportion programmel is also recommended.
本文基于原油流变学、非牛顿流体力学、石油化学、结晶学、原油管输工艺学等理论,以华北原油为研究对象,结合原油物性及实验影响因素分析,制定出实验研究的评价指标及实验方案;从连续介质力学宏观分析的角度,利用HAAKE RS600高端旋转流变仪开展了大量的室内实验,并运用微观研究方法,测定了油样的流变曲线和粘温曲线,建立了流变方程和粘温方程;通过对触变性机理和触变性流体特征的研究,首次对华北原油测定出滞回环曲线、结构破坏与恢复粘时曲线、剪切应力裂降过程曲线,并在理论研究和实验结果的基础之上,建立了能定量描述含蜡原油剪切应力裂降过程的新型三参数触变模式τ=τ_∞e~b/(t+c,该模型具有精度高、参数少、实验简便且适用性强的特点;通过对含蜡原油流变性的影响因素理论研究,开展了加剂条件优选及BEM-5P降凝剂室内评价实验,进一步揭示了降凝剂对华北原油作用机理,在此基础之上,提出了华北原油管输的可行性方案。
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It constructs a tentative frame of theories and policies of industrial clusters. It analyzes industrial clusters mechanism and policies. The research outspreads nine parts. The first part states the background, thepurpose and the present situation of the industrial clusters and development zone.Chapter2 summarizes the theory of development zone, which includes itsconnotation, forms and the process of development zone, and then analyzes thetheory and practices of development zone abroad, finding the gap between Chinaand other developed countries and regions. In chapter 3, based on study of presentresearch, this paper discusses competitive advantages and inherent mechanism, putsforward to the necessity of research of industry cluster in hi-tech zones and pointsout that the industry cluster is the key that Hi-tech zones carry out the seconddevelopment In Chapter4, this paper discusses the possibility and their mutualmotivation between industry cluster and development zone from the view ofIndustrial Ecologization, game theory and industrial structure theory; based onanalysis of Chapter3 and Chapter4,the next two chapters underlines thedevelopment mood and mechanism of industrial cluster in developmentzone,besides,these chapters points out the role of government in this mood. InChapter7, this paper discusses the system of evaluation of the performance ofdevelopment zones. At last, based on the analysis above and the present situation ofOptical Valley in Wuhan, Hubei province, the author estimates the performance ofoptical industrial clusters in Optical Valley, and puts forward to the advices about thegovernment, the mood and the policies of optical industrial clusters in OpticalValley.
全文研究从以下八个部分展开:首先,在文章的第一部分,论述了关于本篇论文的研究背景、研究目的和国内外研究的理论与实践现状;第二部分主要阐述了关于开发区的理论,包括其内涵、表现形式和发展历程,并对国外开发区的理论和实践予以论述,由此对比出国内外开发区发展的差距,从中找出国内高新科技园区的不足和先进发展模式的经验——即发展产业集群;第三章产业集群的基本理论,在对现有理论成果作了梳理工作之后,着重分析其竞争优势和内在机理,为开发区发展模式中引入此概念的必要性埋下伏笔;在探讨了开发区内大力发展产业集群的必要性以后,第四部分着重研究其可行性及其互动机制,包括从产业生态学的角度、博弈论的角度、产业组织理论的角度等,为开发区内的产业集群发展的优势进一步展开;在完成了对其必要性和可行性探讨的基础上,在本文的第五和第六部分分别研究了我国开发区产业集群的发展模式和运行机制,以及政府在当中应当扮演的角色,并提出适当的制度建议;第七章给出了开发区产业集群的评价体系,并在此基础上,第八章结合武汉光谷高新技术开发区的现状作出实证分析,对区内产业集群发展情况作出评价,并对其具体发展模式、政府行为及政策建议作出建议。
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On the basis of making large quantities of investigations, we comprehensively analyze current situation and damage of sand production, and systematically study sand production mechanism of gas well including classification of sand production, influence factors of sand production and process of sand production.
通过大量文献调研,综合分析了气井出砂现状和出砂危害;系统研究了出砂机理,包括了气井出砂分类、气井出砂影响因素和气井出砂过程的研究。
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In 1994 the company developed and produced a pearl tea, tea beverages, instant tea powder products, which leaves the White Dancongèèbeverages access to national patent, in 1997 developed the comprehensive utilization technology of tea are classified as provincial Spark Program, to produce instant tea , tea biscuits, tea, candy and other products developed in 1999 to produce Japanese-style salted plum, products are all exported to Japan, in 2000 the company successfully developed its own high-purity polyphenols production process, in 2001, to further promote agriculture industrialization process of making full use of tea in this region, the resource advantages Qingmei, the company continue to expand science and technology, capital investment, the development of tea polyphenols, tea polysaccharide, caffeine integrated extraction technology, the project fills a gap in the province by the provincial science and technology Identification of the Office of organizations, technology has reached domestic leading level, while Japanese-style salted plum expand production scale, reaching Qingmei annual processing 4000 tons of finished Mei 2500 tons.
公司重视科技术投入,成立了潮安县茶叶工程技术研究中心,该中心技术力量雄厚,拥有一批高级专业技术人才,已在农副产品的综合利用技术开发方面进行了广泛深入的研究开发。1994年公司开发生产出龙珠茶、茶饮料、速溶茶粉等产品,其中白叶单枞茶茶饮料获得国家专利,1997年公司开发的茶叶综合利用技术被列为省星火计划,生产出速溶奶茶、茶饼干、茶糖果等系列产品,1999年公司开发生产出日式盐渍梅,产品全部出口日本,2000年公司自行成功开发出高纯度茶多酚的生产工艺,2001年,为进一步推动农业产业化进程,充分利用本地区茶叶、青梅的资源优势,公司继续加大科技、资金投入,开发出茶多酚、茶多糖、咖啡因综合提取技术,该项目填补了省内空白,经省科技厅组织鉴定,技术水平达到了国内领先,同时扩大日式盐渍梅的生产规模,达到年加工青梅4000吨,成品梅2500吨。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力