查询词典 environment space

Based on the existed research, the study found that the selection of these subjects have rarely been studied, so the selection of this theme has significance in the information society geography theory and can rich the tourist sites in geography study and can guide new thoughts. The second part discusses distance decay effects in web sever when attenuation theory be chose in electronic age location. It considers 7 factors: knowledge spillover environment and yi to technological innovation information reaches nature, decision-maker behavior,human capital factor, supply chain environment, yi to the developed communication net and network of communication lines reaches nature, agglomeration factor, commercial and trade circumstance. Part three studies location significance of outdoor sports websites. Though investigating and analyzing our country 30 cities's outdoor sports websites in China, the author gives out the location characteristics of outdoor sports websites in actual geographical space, and take Shijiazhuang for example, the author analyzes the stadiums gathering effection to the outdoor sports websites which are near the stadiums, and dividing the location into gathering area and non-gathering area the author studies the effects for information flow guiding people flow. Part four is the conclusion which includes four conclusions reached by this article.

在国内外已有研究的基础上，发现本文的选题在国内外研究中基本处于空白状态，对于丰富信息社会地理学理论及引导旅游网站在地理学的研究新思维有重要意义；第二部分论述了服务器距离衰减原理在电子服务区位选择中的作用，并分别从知识溢出环境和对技术创新信息的易达性、决策者行为、人力资本因素、供应链环境、对发达通讯网和交通网的易达性、集聚因素和经济贸易因素七个方面进行考量；第三部分通过对我国30个城市的户外运动网站地址进行调查分析，总结出户外运动网站在实际空间分布上的区位特征，并对聚集区与非聚集区的区位在信息流导引人流中的作用—以石家庄市户外运动网站受临近体育场聚集效应的影响为例，作了实证分析；第四部分为结论，总结了本文研究所得出的四点结论。

Destruction of the environment, production that polluted, make the ecological environment on the earth overbalance, the problem that the human living space exists is becoming more serious.

环境的破坏、污染的产生，使地球的生态环境失去了平衡，人类生存空间所存在的问题日趋严重。

This project will study the benefit assessment on the ecology engineering of the greenway of highway interchange, at the design、construction and as-built stages. In this case, the ecology engineering of the greenway of highway interchange, including eco-pond and eco-island to substitute the green space, ecological corridor to reduce the habitat fracture, overfall to increase the Oxygen Saturation of the eco-pond, and the relative way to compatible the original environment. Furthermore, the case study on the problems during and after the construction provide some example for the same case in the future to reduce the impact to the original ecology environment.

本论文藉由交流道绿带区域采用之生态工程来探讨交流道绿带区域从规划、施工阶段到完成后所造就工程效益，如交流道绿带区域规划以生态池与生态岛取代绿地营造湿地环境、生物廊道降低栖地破碎化、跌水区增加生态池水中含氧量及相关近自然设计手法促使与周遭生态景观结合予以评估工程造就之效益，并藉由施工过程与完工后浮现之问题作为日后类似工程规划之范例，有助於减少对於既有生态环境之冲击。

It will expose the design problem of maintainability of civil airplane to the early stage of design. This paper discusses the composing of the virtual maintenance environment, builds non-immersion virtual maintenance environment of undercarriage, and establishes a part library management system. The characteristic of maintainability models and maintainability analysis based on virtual technique is researched to give the maintainability frame model of civil airplane virtual maintainability analysis. All levels of maintenance time model and maintenance man-hour model are established. Analog-Huffman code is proposed to optimize space partition method in traditional collision detection arithmetic."Maintenance therblig"is brought into the broken down of maintenance tasks, and the new maintenance tasks broken down method is proposed. The demands of human measure, position, and equipment layout in human engineering are discussed, and the verification methods of human measure, position and equipment layout in virtual maintenance are given. Basic principle and verification procedure of maintainability virtual verification is developed primarily, and the reachablity, the visibility, and posture-comfortability are verified.

本文论述了虚拟维修环境的组成，构建了某型飞机主起落架非沉浸式虚拟维修环境，建立了维修对象的零件库管理系统；研究了基于虚拟技术的维修性模型特点及维修性分析流程，给出了基于虚拟技术的民机维修性分析框架模型，并结合传统维修性模型，建立了各级维修时间模型和维修工时模型；提出类HUFFMAN编码，结合人因工程的要求，优化了传统碰撞检测算法中的空间分割法，使之适用于柔体；在维修性分解中引入"维修动素"，给出了与CATIA、DELMIA等应用软件结合紧密的维修任务分解方法；论述了人因工程中对人体尺寸、姿势、设备布局的要求，给出了虚拟维修中人体尺寸、姿势分析、民机内设备布局的验证方法；初步制订了维修性虚拟验证的基本原则和验证程序，并结合具体实例对可达性、可视性、干涉性以及人体姿态舒适性进行了验证，较清晰、真实地反映了维修人员的维修状态。

With the idea of harmonious environment for Human and Nature, more and more waterscape is applied for external space and become a new trend of residential environment.

在人与自然和谐相处的环境观影响下，住宅区中开始大量引入水景，并逐渐成为住宅区外环境建设的新趋势之一。

Zermatt smoke-free in a limited time and space between, with an environment of limited resources and limited energy and intelligence efforts to help the Earth's environment and improve the quality of life better and harmonious.

Zermatt无烟在有限的时空之间，借助有限的环境资源和有限的精力与智慧，全力以助地球环境和生命质量的改善与和谐美好。

The thesis compositively analysises the development and current status of water environment design theory in both domestic and foreign countries now and ancient,tries to explore the ways of the water environment design that accord with human phychological sense and behavior habit,so that we can build pleasant and beautiful space.

本文首先分析了水的特性，并以此为出发点，从空间、环境、心理、行为、生态等方面详细阐述了水在环境空间中的作用，试图探究出符合人们心理感受和行为习惯的水环境设计手法，主要内容如下：水具有很强的可塑性，水的多变性使之成为环境设计中的无可比拟的造景要素。水景可分为静水景观和动水景观两大类。

And analyse people"s behavior psychology , point out the environment should reach " the tristate balanced Create the orientation human nature of inhabit space is residence value of environment.

进而分析人的行为心理，指出宅间环境应达到&三态平衡&，营造人性的居住空间是宅间环境设计的价值取向。

In orde to obtain system optimization in high efficiency production and operation safety, the microcosmic problem of goaf treatment was brought into the creative design of mining method and the synergism of two problems was studied. Firstly, in view of the occurrence characteristics and mining conditions of catacalstic ore section of orebody No. 105 in Gaofeng mine in Guangxi province, considering the adaptability to different scale goafs in the ore section, based on mining environment reconstructing idea and continuous mining mode, a new mining method (mining environment reconstructing non-pillar sublevel-strip continuous mining method) was put forward. Then, some repr, esentative goafs were selected and their stabilities were calculated by discrete element method on the basis of differences of goaf scale, surrounding conditions and situ stress field. At last, the mining layout was adjusted on the basis of goafs stability analysis and the goafs were adjusted as a part of cutting engineering, blasting space or stope, so as to determine all kinds of goafs treatment schemes.

摘 要：为在生产高效和作业安全上取得系统整体最优，将碎裂矿段的空区处理微观问题纳入采矿方法创新设计宏观问题中，开展2种问题的协同研究：首先，针对广西高峰矿105号矿体碎裂矿段的赋存特点和开采技术条件，考虑对各种规模空区适应性，基于采矿环境再造和连续采矿理论，提出采矿环境再造无底柱分段分条连续采矿法；然后，根据采空区规模、围岩状况和原岩应力场等条件的差异，在所有采空区中选择具有代表性的空区，运用离散元程序对其稳定性进行计算分析；最后，在稳定性分析的基础上，灵活调整开采布局，将采空区调整为部分切割工程、自由爆破空间或采场，从而确定出各种规模空区的处理方案。

The paper investigates both block-type pilot linear minimum mean square error algorithm and IEEE802.16 OFDM channel estimation analysis. Simulation results confirm the block-type pilot structure is more suitable for IEEE802.16 system. An optimal pilot setting algorithm, based on space frequency domain, is explored and the pilot chart is presented. The proposed algorithm finds its application in MIMO-OFDM. Simulation results show the algorithm presents a good approximation to the perfect channel state information curve, with about 2dB difference in SNR. The simulation results also demonstrate the algorithm achieves fairly high stability in the environment of fast fading, performance of the proposed algorithm is better that of pilot training channel estimation.3. Taking into account the characteristics of IEEE802.16 OFDM system, OFDM system simulation platform is constructed in Matlab, exploiting simulink as a tool. OFDM modulation and demodulation simulation system are configured on LabVIEW platform. All the system signal processing is simulated, including defining system parameters, designing modulation model, and verifying all the proposed algorithms under different environments, such as white Gaussian noise, multi-path fading, with or without guard interval etc. Bit error performance is evaluated. The research provides valid theoretical basis for practical OFDM system performance evaluation.4. Taking advantage of software radio, the paper designs a hardware platform with both 256-IFFT/FFT and 512-IFFT/FFT OFDM schemes co-existing in one platform. You can predetermine one from the two schemes to carry out almost the same model function with different system performance and parameter setting.5. Referring to IEEE802.16 standard, the paper proposes a design method for generating signals and frames suitable for laboratory investigations implemented in laboratory environment.6. Based on 6701evm digital evaluation card, combined with analogy front-end, the paper designs a DSP software model to deal with baseband signal processing. An overall OFDM scheme, with modulation and demodulation function, is accomplished.

讨论分析了MIMO-OFDM中一种基于空频域的最优导频设置算法，给出了导频图案，通过仿真实验表明，该算法与理想的信道状态信息曲线非常接近，信噪比差距约在2dB左右，并且在快衰落条件下具有较好的稳定性，其性能要优于基于前导训练的信道估计方法。3、根据IEEE802.16OFDM系统特点，论文分别在Matlab中应用Simulink工具构建OFDM系统仿真平台、在LabVIEW平台上实现了OFDM调制解调仿真系统，模拟了整个系统的信号流程，进行了OFDM仿真系统参数的选择和调制模块的仿真设计、论证各算法性能，并根据各种不同的条件：例如高斯噪声、多径衰落、有无保护间隔等，对系统的误码特性进行了评估，为正确评价实际OFDM系统的性能提供了有效的理论依据。4、论文以软件无线电思想作为指导，提出了以256点IFFT／FFT为核心和以512点IFFT／FFT为核心的两种OFDM算法模式并存于同一个硬件平台、且可预选的方案，它们在参数选取和性能指标上有所差异，均实现了相似的模块和功能。5、论文参考IEEE 802.16无线网络标准的参数设置，针对本设计系统的应用环境和系统硬件的性能速率，提出了一种应用于实验室环境的信号结构、帧格式等参数设计。6、论文基于TI公司的6701evm数字评估板卡，结合模拟前端搭建数字中频平台，设计了基带处理的DSP软件模块并进行系统调试，基本实现了一套完整的OFDM调制解调方案。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。