Design and Implementation of Mobile Tax Service Platform Based on Android

现代通信技术飞速发展，在互联网取得巨大成果之后，移动互联网又已经发展成熟。人们获取信息的手段越来越多，也越来越便利。在移动互联网的浪潮中出现的Android系统是当今世界上增长速度最快的移动操作系统，自Android智能手机出现以来短短几年已经成长为市场占有率第一的手机。新的形势提出新的要求，智能手机的便捷性对税务部门的服务方式提出了新的需求，税收服务应对当前的新形势做出及时的适应。为此，税收服务借助移动互联网进行创新已经势在必行。移动税收服务对提高税务部门的服务质量，服务水平有极大的帮助，能有效提高服务效率，能更好的为纳税人提供形式多样的优质服务。 本论文首先分析了实行移动税收服务的背景和...Modern communication technology development rapidly, after the Internet has been a great achievement, the mobile Internet has grown up again. There are more means of access to information for people and becoming more convenient. In the wave of the mobile Internet Android is now the fastest-growing mobile operating system in the world, since Android smartphones in just a few short years has grown i...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201323244

Research on DCM Boost PFC Technology Based on Staggered Parallel Topology

随着电力电子技术的高速发展，电力电子产品渗透到了生活的各个领域，它们产生的高次谐波对电网的污染也日趋严重，使人们对谐波污染治理越来越关注。功率因数校正技术（PFC）可以有效减小谐波污染，改善电网质量，提高电能的利用率，是解决电力电子产品产生谐波的主要手段之一。传统单支路BoostPFC拓扑的输入电流纹波和开关损耗较大，一般应用于中、小功率的场合。所以，本文在Boost拓扑上进行了相应改进，引入了交错并联BoostPFC作为主电路拓扑，基于ATmega16控制器对变换器进行数字控制。 本文以Boost拓扑为基础，分析了功率因数校正技术的基本原理，讨论了CCM、CRM、DCM三种工作模式及其控制...With the rapid development of power electronics technology, power electronic products penetrate into all areas of life, they produce higher harmonics on the power grid pollution is also increasingly serious, so that people pay more and more attention to harmonic pollution control. Power factor correction (PFC) can effectively reduce the harmonic pollution, improve the quality of the power grid, im...学位：工程硕士院系专业：航空航天学院_工程硕士(仪器仪表工程)学号：1992014115294

Research Progress on Hybrid Solar-Geothermal Power Generation

Developing and using combined new energy sources is an important direction of development for new energy in future. The first Hybrid Solar-Geothermal Power station has been built, and related research on this field has been carried out vigorously. Accord

Method of error compensation for precise grinding the helical rotor tooth profile

针对成形法精密磨削加工螺杆转子螺旋面的问题,研究了螺杆转子加工过程中由工艺系统误差产生的齿廓加工误差的补偿方法。提出了一种基于首件转子磨削后的齿; 廓测量误差,进行预处理再修整砂轮的新算法。使用处理后的补偿数据对砂轮修整后,加工误差明显减小与收敛,大大提高了磨削转子的齿廓制造精度。Aiming at the process of the machining screw rotor helical surface by; forming precision grinding, the compensation method of tooth profile; error caused by the process system error in the process of screw rotor; machining is researched. A new pretreatment and refinish grinding wheel; algorithm is proposed which based on the measurement error of the tooth; profile after the first rotor grinding. After the grinding wheel was; dressed base on the compensated data, machining error is obviously; reduced and convergence, the machining precision of root is improved; obviously.陕西省地方重大资助项

A Study on Financial Fraud

企业财务舞弊是一个国际性问题。安然事件余波未平，2002年之后美国上市公司又相续爆发出一系列财务舞弊丑闻。在相对不够成熟的我国资本市场，也出现了许多财务舞弊的案例。伴随财务舞弊的结果必然是伤害投资者、债权人等相关方面的利益，从而阻碍资本市场的发展。本文从外部审计的角度，试图通过分析财务舞弊的理论动机与表现形式，建立一个有效识别财务舞弊的分析系统。本文同时也对财务舞弊的防范，提出基于内外部制度建设的政策建议。 本文首先整理罗列了现有理论中对财务舞弊成因的各种解释，在此基础上比较这些理论的异同，探求这些理论与财务舞弊可能的表现形式之间的联系，从而建立识别防范财务舞弊的理论框架。针对财务舞弊的具体...Fraudulent Financial Reporting is an international issue. In 2001,the energy magnate Enron went from massive to bankrupt, and that the most notorious accounting scandal was brought to the front page. Hardly has one wave subsided when another rises. In 2002,a wave of astounding accounting scandals broke out. In a relatively immature capital market of China, there have been many cases of financial f...学位：会计硕士院系专业：厦门大学与厦门国家会计学院会计硕士专业学位联合教育中心（MPACC）_会计硕士(MPACC)学号：X200615711

Remedies of Mistaken Real-estate Registration

根据《物权法》规定的公示公信原则，不动产登记将对外界产生公信力，若不动产登记错误，不仅会使真实权利人的利益受到损害，而且还会破坏市场交易的安全。当前，我国学者对不动产登记错误的救济制度的基础理论研究相对薄弱，无法为当事人提供及时、有效的救济，不能为司法实践提供切实可行的解决建议。本文通过论证不动产登记行为的私法性、不动产登记机关审查义务、不动产登记错误损害赔偿等问题，从而使不动产真实权利人可通过符合自身情况，采取更正登记、异议登记、民事诉讼多种途径寻求救济。全文共分为四章： 本文第一章介绍不动产登记错误的基本理论。该章首先阐述了不动产登记的私法性质，澄清了长期以来将不动产登记行为作为行政行为...Based on the demonstrative principle of Property Law, registration of real-estate will exert an influence of public credit. In case of mistaken real-estate registration, not only the rights of genuine owner will be harmed, the transaction security of the market will be ruined as well. Nowadays, the insufficient research on the basic theory of remedy system for mistaken real-estate registration can...学位：法律硕士院系专业：法学院_法律硕士(JM)学号：X201012005

Analysis of Selecting Parameter of Cutting Edge on Sphere Surface in Geometric Model

【中文文摘】在描述球头刀刃的曲线参数方程时 ,选取不同的刀刃几何参数会影响刀刃槽加工的刀位轨迹非线性方程计算中的求解 ,产生求导病态以及坐标变换中的几何不变性等问题 ,本文依据微分几何和计算几何理论阐述了以刀刃点的转角变量作为刀刃几何参数的优越性。 【英文文摘】In defined parameter equations for cutting edge on sphere surface,sel ecting different geometric parameter affects following whether happen diseasedne ss or not in derivation calculus or keep geometric invariability or not in coord inate change for calculating cutter location. On basis of the differential geome try and computational geometry theory, this paper discusses a superiority which takes the rotary angle of point at cutting edge as geometry parameter

Research on NC Machining Technology Based on Cutting Tool with Forward and Backward Motion

通过分析常规数控加工中存在的问题,提出了一种刀具在进给方向上可进让式进给切削工件曲面轮廓的新工艺方法,建立了进让式进给切削数学模型,并从被加工工件的几何形状、切削过程中刀具受力情况及切削区的切削热释放情况等方面,具体分析了采用该方法对加工精度的改善情况,并给出了算法步骤。试验结果表明,新方法有利于减小工艺系统的变形,显著提高了工件的加工精度。Based on analyzing problems that general NC machining process existed,this paper proposed a machining method of cutting tool forward-and-backward machining work piece in feed direction.The calculation model of cutting location was established,and the advantages of this process included a superior surface finish,low tool pressure and cutting heat released easily in the cutting section.Finally,experiments and data were shown.The advantages were illustrated by reducing deformation of machining complex and achieving higher machining precision.校引进人才科研启动资金项目(ZRC2008221

Design of CNC System for Wire Bending Robot Based on GTS Motion Controller

为了解决三维复杂金属线材和弹簧类零件的快速制造与生产问题,设计了一台具有X、z两个移动轴和y、A、b三个回转轴的五自由度弯丝机器人。采用PC+运动控制卡的开放式数控结构完成了系统硬件平台的搭建,利用MfC与控制卡提供的动态链接库完成了数控系统软件的编写,实现了系统的绝大部分功能,并应用于课题组设计的弯丝机器人系统中。In order to solve rapid manufacturing and processing problem of workpieces with 3D complex surface and springs w hich w ere made of metal w ire or such other materials,a five degreed of freedom CNC w ire bending robot w hich had X,Z tw o parallel movement axes and Y,A,B three rotary movement axes w as designed.The system hardw are platform w as build through an open-architecture NC system based on IPC and motion control card,the softw are w as programmed by Microsoft Foundation Class and the dynamic link library w hich provide by Googol GTS card that achieved mostly system functions.The CNC system has been used to the w ire bending robot w hich designed by research team.国家科技重大专项(2010ZX04001-162

Spindle Thermal Error Comprehensive Prediction Model Based on Information Granulation and SVM

主轴热变形是影响数控机床加工精度的主要因素。为提高主轴热误差的预测精度,提出了基于信息粒化支持向量机（SVM）的主轴热误差综合预测模型。使用信息粒化方法对采样温度数据与主轴热误差数据进行预处理,分别建立基于SVM的主轴热误差的回归预测模型和时间序列模型,通过计算两个模型权重系数,最终建立主轴热误差综合预测模型。以2MZK7150五轴数控可转位刀片工具磨床为研究对象,实验表明,较之于单一模型该模型具有良好的泛化能力和较高建模精度。Spindle thermal deformation has an extraordinary influence on the NC machining precise. Aiming to the im- provement of the spindle thermal deformation predict ability, the spindle thermal error comprehensive predict model is pro- posed on the basis of the information granulation and support vector machine（SVM）. Information granulation method is em- ployed to pretreat the sampling temperature and spindle thermal error. The regression prediction model and time series mod- el of spindle thermal error are also carried out based on the SVM. Finally, the spindle thermal error comprehensive predict model is established using the weight coefficients of the two models. The 2MZK7150 five-axis NC indexable insert tool grinding lathe machining experiment shows that the established model has better generalization ability and higher modeling precision compared with the unitary model.陕西省科技统筹创新工程计划（2014KTD201-04-03