房地产价格预测模型的研究

房地产行业的发展状况是关系国计民生的重要问题。随着我国社会主义市场经济的快速发展,国内房地产市场不断升温,本文针对房地产价格与城市化率、住房保障规模等影响因素进行研究,通过主成分分析法确定影响房地产价格的主要影响因素,在此基础上通过多元线性回归分析建立房地产价格与主要影响因素之间线性关系模型,并通过逐步回归分析对此模型进行优化。本文最后在模型改进推广中,提出了通过计算残差减小误差的方法。     

神经网络算法在房地产价格分析和预测中的应用

房地产市场是一个复杂的系统，影响因素较多，本文引入了非线性分析的有效工具——人工神经网络（ANN）。利用BP神经网络中的误差反向传递算法（即BP算法）对房地产价格进行分析，建立了基于BP神经网络的房地产价格预测模型，并利用武汉市2010-2012年各季度商品房价格对模型进行了训练与测试，取得了较好结果，证明了该模型在房地产价格预测方面具有较好的效果，并具有误差小、效率高等优点。最后利用模型对武汉市2013年第3、4季度房地产价格进行了预测。     

房地产价格统计数据比较分析

房地产作为国民经济中的一个重要产业,它的发展会对我国的经济发展产生重要的影响。虽然我国的房地产事业已经取得了重要的成就,但是房地产价格指数还未能正确地反映房地产市场的运行情况。房地产业既是经济发展中的一个重要环节,又是解决民生事业的重要举措。因此,笔者在文中根据房地产的价格数据进行分析和比较并提出了相应的观点,通过对相关的样本数据进行对比以提高房地产价格统计数据的真实性和可靠性,希望对我国房地产事业的发展具有促进作用。     

在周期背景下探究我国房地产业的驱动因素与潜在影响

近些年,中国房地产市场一直是关注焦点,金融危机过后的房地产市场将走向何方更引起各方人士的热议。本文从发展周期、驱动因素、潜在影响三个方面来看我国房地产市场的发展特征,以期为投资者、开发商、政府提供些许角度作为考虑依据,希望能够通过解决规范政府行为、银行业自身问题、完善土地制度来加以优化我国房地产市场的良性发展。     

转型期中国房地产价格影响因素分析

中国正处于社会转型的重要变革时期,房地产价格深受其影响。本文主要探讨了城市化进程、加入WTO、土地出让制度、住房供给制度和房地产业发展政策等诸多转型因素对房地产价格的影响。     

再论中国房地产经济现状

经济的迅速发展也带了我国的房地产经济的快速发展。现阶段我国房地产产业已经占据了国民经济发展的重要地位,推动了经济的发展,提高了人们的生活水平。房地产产业虽然发展迅速,但是在这一发展节奏条件下仍然存在着很多问题,这些问题影响着人们的正常生活。为了保障我国房地产产业的健康发展,房地产相关部门有必要对现在房地产存在的问题进行分析以及制定相应的改进措施。     

基于网络环境的房地产营销

当今社会网络已成为人们生活的一部分,与人们生活息息相关的房地产,只依靠传统的营销模式已经不能吸引消费者的眼球。本文通过对苏州地区基于网络环境的房地产营销进行调研,分析房地产网络营销的优势及影响房地产网络营销的因素,并为房地产构建基于网络环境的营销方案。     

关于房地产企业的人力资源信息化管理建设的探讨

本文以我国房地产产业的发展为例,讨论了目前人力资源信息化管理建设在其的应用现状,针对所存在的问题,本文提出了几点改革措施,并简单分析了地铁建设对房地产行业发展的影响。     

房地产业的“智慧”转型与新机遇

<正>今年以来,我国的房地产行业似乎正在进入一个新的"冰河时期",在经济下行压力和一些市场因素的影响下,很多城市的房地产企业开始面临全面倒闭的风险。根据国家统计局最新发布的9月份70个大中城市住宅销售价格变动情况来看,我国的整体商品房价格已连续5个月下跌,该月70个城市房价环比无一上涨,其中58个城市甚至出现同比下滑。     

房地产交易系统中的用户体验技术优化

顾客满意度是影响交易成功与否的重要因素。面对当前房地产交易系统被广泛应用的局面，对用户体验进行技术优化可以为房产登记部门树立良好的形象、帮助房产登记部门带来丰厚的收益。本文就如何在房地l产交易系统中进行用户体验技术优化进行了分析和讨论。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first