gis用于森林防火方面的一篇論文，gis做的系統(tǒng)，用vba/vb開發(fā)的。。。學(xué)習(xí)ing
上傳時(shí)間： 2016-12-18
上傳用戶：王慶才
These routines model tropospheric radiowave propagation over variable terrain and calculates propagation loss vs. height and range. Propagation loss is displayed in dB contours on a height vs. range plot. TPEM is based on the split-step Fourier PE method and was originally developed from an early PE model called PEPC, written by Fred Tappert. Propagation loss over variable terrain is modeled by shifting the field an appropriate number of bin widths correspondc ing to the height of the ground. The field is determined using the smooth earth PE method.
標(biāo)簽： tropospheric propagation calculates radiowave
上傳時(shí)間： 2017-01-01
上傳用戶：225588
特定人孤立詞語音識(shí)別中，最為簡(jiǎn)單有效的方法是采用動(dòng)態(tài)時(shí)間彎折(dynamictimewa甲ing，DTw)算法。該算法基于動(dòng)態(tài) 規(guī)劃(DP)的思想，解決T發(fā)音長(zhǎng)短不一的模板匹配問題，是語音識(shí)別中很成功的一種匹配算法。
標(biāo)簽： 語音識(shí)別
上傳時(shí)間： 2017-04-18
上傳用戶：shus521
The telecommunications industry has seen a rapid boost within the last decade. New realities and visions of functionalities in various telecommunications networks have brought forward the concept of next-generation networks (NGNs). The competitions among operators for support- ing various services, lowering of the cost of having mobile and cellular phones and smartphones, increasing demand for general mobility, explosion of digital traffic, and advent of convergence network technologies added more dynamism in the idea of NGNs. In fact, facilitating con- vergence of networks and convergence of various types of services is a significant objective of NGN
標(biāo)簽： Next-Generation Converged Building Networks
上傳時(shí)間： 2020-05-26
上傳用戶：shancjb
The aim of this book, the first of two volumes, is to present selected research that has been undertaken under COST Action IC0902 ‘‘Cognitive Radio and Net- working for Cooperative Coexistence of Heterogeneous Wireless Networks’’ (http://newyork.ing.uniroma1.it/IC0902/). COST (European Cooperation in Sci- ence and Technology) is one of the longest-running European frameworks sup- porting cooperation among scientists and researchers across Europe.
標(biāo)簽： Communication Cognitive
上傳時(shí)間： 2020-05-26
上傳用戶：shancjb
While teaching classes on digital transmission and mobile communications for undergraduate and graduate students, I was wondering if it would be possible to write a book capable of giving them some insight about the practical meaning of the concepts, beyond the mathematics; the same insight that experience and repetitive contact with the subject are capable to construct; the insight that is capable of build- ing the bridge between the theory and how the theory manifests itself in practice.
標(biāo)簽： Transmission Digital
上傳時(shí)間： 2020-05-27
上傳用戶：shancjb
When joining Siemens in 2001, I also extended my research interest towards radio net- work planning methodologies. This area of research brought together my personal interest in mobile communications and in the design of efficient algorithms and data structures. Between 2001 and 2003, I participated in the EU project Momentum, which was target- ing the performance evaluation and optimization of UMTS radio networks. I
標(biāo)簽： Efficient Methods WCDMA for
上傳時(shí)間： 2020-05-27
上傳用戶：shancjb
This book is the outcome of the panel discussions held on the special event honor- ing first 50 PhD students of Prof. Ramjee Prasad. Several of his PhD students are today worldwide telecommunication leaders themselves. Over 60 post-docs, PhDs, colleagues and the scientific staff were present at the event to celebrate the research and development achievements in the field of mobile and wireless communication.
標(biāo)簽： Globalization Mobile of
上傳時(shí)間： 2020-05-27
上傳用戶：shancjb
The telecommunications industry has seen a rapid boost within the last decade. New realities and visions of functionalities in various telecommunications networks have brought forward the concept of next-generation networks (NGNs). The competitions among operators for support- ing various services, lowering of the cost of having mobile and cellular phones and smartphones, increasing demand for general mobility, explosion of digital traffic, and advent of convergence network technologies added more dynamism in the idea of NGNs. In fact, facilitating con- vergence of networks and convergence of various types of services is a significant objective of NGNs.
標(biāo)簽： Next-Generation Converged Networks
上傳時(shí)間： 2020-05-31
上傳用戶：shancjb
Since the advent of optical communications, a great technological effort has been devoted to the exploitation of the huge bandwidth of optical fibers. Start- ing from a few Mb/s single channel systems, a fast and constant technological development has led to the actual 10 Gb/s per channel dense wavelength di- vision multiplexing (DWDM) systems, with dozens of channels on a single fiber. Transmitters and receivers are now ready for 40 Gb/s, whereas hundreds of channels can be simultaneously amplified by optical amplifiers.
標(biāo)簽： Communication Techniques Optical Theory and
上傳時(shí)間： 2020-05-31
上傳用戶：shancjb
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