The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.

本文的主要研究工作和貢獻(xiàn)如下：●提出了一種基于窄帶處理的FH信號盲檢測和參數(shù)盲估計的實(shí)現(xiàn)方法欧美vs一级片，即首先求出多路信號之間的互相關(guān)，進(jìn)而得到互功率譜密度矩陣亚洲天堂在线观看免费，然后通過對CSDM進(jìn)行對折處理來抑制噪聲一区二区视频在线导航、定頻信號及其他干擾的影響，并將所有屬于FH信號的hop(每一跳的駐留時間在時頻圖上持續(xù)的線段)從CSDM中篩選出來直接看的av网站免费观看，最后用陣列信號處理中的到達(dá)方向估計理論在頻域中估計出各個hop的方向參數(shù)成年人视频免费在线看，利用方位信息完成FH信號分離并得到FH信號的數(shù)目及其各自的參數(shù)集；●提出了一種確定FH信號檢測門限的策略a级黄色的网站，該策略不僅使得檢測門限能夠通過理論計算得到伊人国产在线观看，而且還顯著地抑制了非跳頻信號的干擾，從而能有效地檢測出FH信號哪里看日韩无码黄片；●提出了一種基于寬帶處理的短波FH信號盲檢測和參數(shù)盲估計的實(shí)現(xiàn)方法黄色视频高清免费在线观看网站，即首先利用寬帶空間譜測向技術(shù)得到接收信號的DOA，然后采用寬帶波束形成技術(shù)對特定方向進(jìn)行空間濾波黄色视频大全免费，實(shí)現(xiàn)多個信號的分離长沙卓海数字技术有限公司，最后分別提出了兩種FH信號的盲檢測和參數(shù)盲估計方法，第一種方法適用于空間某個特定方向上存在著幾個駐留時間不同的恒跳速FH信號和其他干擾信號的混合信號最色A片视频，第二種方法適用于空間某個特定方向上僅含一個可變跳速的FH信號和噪聲的混合信號91黄色片免费看；●將空間插值的概念和寬帶波束形成技術(shù)結(jié)合起來，提出了一種基于頻域處理的寬帶恒定束寬的波束形成方法久久久久久精品。

In 1962, Peter Drucker, the famous master of economics and management, presents definitely that logistics was the last area for decreasing cost in his paper Economy"s Dark Continent published in fortune. For 40 years, the concept of logistics was expanded continually and more and more attentions were paid on it. Especially from middle of 1980"s to this day, with the increase of economic globalization and development of the information technology, more and more enterprises go back to their main businesses, and pay their points on these businesses such as product development, manufacture, marketing, which are their core businesses and they are good at. These businesses embody the competitive advantages of the enterprises.

1962年著名經(jīng)濟(jì)管理學(xué)大師彼得·杜拉克在美國《財富》雜志上發(fā)表《經(jīng)濟(jì)的黑暗大陸》一文jjj无码高清，首次明確地提出物流是節(jié)約成本的最后領(lǐng)域。40年來人人摸人人草人人操，物流的概念在不斷地拓展欧美亚洲日韩国产精品第6页，人們對物流管理越來越重視，特別是80年代中期至今免费色色的网站，隨著經(jīng)濟(jì)全球化競爭的加劇一级免费ww视频、信息技術(shù)的飛速發(fā)展，許多生產(chǎn)企業(yè)回歸主業(yè)找一个黄色的网址能看毛片视频的，將精力集中于產(chǎn)品開發(fā)青草线观看免费观看视频、生產(chǎn)、銷售等具有競爭優(yōu)勢的核心專長業(yè)務(wù)的呼聲日益高漲亚洲图片国产精品一区二区，理論界和企業(yè)界已不再淺層次的探討物流管理的重要性問題了丰满美女视频一区二区三，他們開始探討物流管理的模式問題，即：究竟是自營物流業(yè)務(wù)亚洲天堂在线地址，還是將物流業(yè)務(wù)外包給專門從事物流管理的企業(yè)去做欧美性爱在性。

The main contents are listed as follows: Analyse and research of the data mining technique. the dissertation summarizes,analyses and studies the current status of the data mining technique in our native country and overseas widely and roundly research . The definiens and orientation of the data mining is reviewed in brief first.

對數(shù)據(jù)挖掘技術(shù)的國內(nèi)外研究現(xiàn)狀進(jìn)行了廣泛而全面地歸納、分析和研究插女人下面，對數(shù)據(jù)挖掘的定義及定位進(jìn)行了簡要的回顧www.日本子..com精品，在數(shù)據(jù)挖掘基本概念的基礎(chǔ)上，對數(shù)據(jù)挖掘常使用的技術(shù)和研究的對象進(jìn)行了詳細(xì)地分類、歸納和總結(jié)经典18岁黄片。

The dissertationsummarizes,analyses and studies the current status of the data mining technique inour native country and overseas widely and roundly and then summarizes anddiscusses its developmental trends and hot research fields. The definiens andorientation of the data mining is reviewed in brief first. Based on the basic conceptsof data mining,this dissertation classifies and summarizes the objects of data miningand the common techniques in detail.

對數(shù)據(jù)挖掘技術(shù)的國內(nèi)外研究現(xiàn)狀進(jìn)行了廣泛而全面地歸納欧美人性交精品A片在线观看、分析和研究，對數(shù)據(jù)挖掘技術(shù)的未來發(fā)展趨勢和熱點(diǎn)研究領(lǐng)域進(jìn)行了總結(jié)和探討黄色免费的网址，對數(shù)據(jù)挖掘的定義及定位進(jìn)行了簡要的回顧国产精选自啪，在數(shù)據(jù)挖掘基本概念的基礎(chǔ)上，對數(shù)據(jù)挖掘常使用的技術(shù)和研究的對象進(jìn)行了詳細(xì)地分類国产美女人人操、歸納和總結(jié)av在线播放免费精品。

It is the first important step in video analysis and will directly affects the effectiveness of indexing Shot boundary detection is one of our major research interests and we will tackle the following existing problems the ambiguity between gradual change and camera motion, the discontinuity during gradual change, false detection caused by illumination variation and flashlight, automatic threshold selection Firstly, we discuss shot boundary detection in non-compressed domain In chapter 2, we compare some of the commonly used detection methods which are based on frame difference and point out that single feature will not generate good results As a conclusion, we use fuzzy logic to combine multiple features Presently, most frame difference based shot boundary detection algorithms rely on threshold and hence the selection of such thresholds will greatly affect the performance of boundary detection We propose a membership function to define frame difference and calculate the membership with self adaptation according to the statistic distribution of frame differences to satisfy different type of video clips Experiments show that the proposed fuzzy shot boundary detection algorithm can be used with different video types and has a high detection precision and recall In chapter 3, we discuss model-based shot boundary detection algorithms regarding chromatic and spatial editing effects such as fade-in, fade-out, dissolve and wipe Various parameters are proposed to better describe the characteristics of each editing type.

鏡頭邊界的檢測是把視頻自動地分割為一個個鏡頭，作為基本的索引單元国产精品igao视频网网址免费播放，因此它是視頻分析重要的第一步欧美熟妇另类，直接影響到視頻檢索的成敗。鏡頭邊界的檢測是本文研究的重點(diǎn)之一人人摸人人爽一及片。目前鏡頭邊界檢測算法主要存在以下問題：漸變與鏡頭運(yùn)動難以區(qū)別；漸變過程中的不連續(xù)與停頓亚洲无码色色操、光照條件的變化及閃光燈等特殊情況會引起誤檢測无码一区二区三区av免费；自動選擇閾值比較困難等。本文首先針對非壓縮域視頻進(jìn)行了鏡頭邊界檢測的研究免费黄色网站查询。在第二章中我們采用了比較流行的基于幀間差的方法黄片你懂的。在比較各種幀間差計算方法的基礎(chǔ)上，指出使用單一的特征難以取得很好的檢測效果日韩男女AAA，提出用模糊邏輯綜合使用各種特征亚洲久久。目前大多數(shù)基于幀間差的鏡頭邊界檢測算法都采用閾值法進(jìn)行鏡頭轉(zhuǎn)換的判別。閾值選擇的誤差對檢測性能有較大的影響欧美一级婬片A片九九精品，本文提出用隸屬度函數(shù)定義幀間差較大国产精品又黄又大又硬、中等較大和較小等概念，并根據(jù)幀間差的統(tǒng)計分布自適應(yīng)地確定隸屬度人人干人人看人人插，以適應(yīng)不同類型的視頻片斷大黑吊插逼。實(shí)驗(yàn)結(jié)果表明這種基于糊邏輯的鏡頭邊界檢測算法可以適應(yīng)不同的視頻，并具有較高的檢測精度和檢出率A片无码在线观看。在第三章中采用基于模型的方法進(jìn)行鏡頭漸變的檢測国产JJZZJJZZ在线观看，研究了淡入／淡出、慢轉(zhuǎn)換和掃換的模型亚洲色第一页。

This study develops a whole new aspect of contingent-claim model for hedging the catastrophe risk. We describe the framework of the new hedging strategy - catastrophe swap - as detail as possible and compute the exchange amount of CAT swap contract by Monte Carlo Simulation. Last but not least, this article reveals the most powerful back-up, net cash flow and utility comparison between different strategies, to prove the practicability and favorableness of our catastrophe swap model.

本篇論文將設(shè)計一個跨期性理賠的避險模型來處理巨災(zāi)風(fēng)險亚洲综合在线综合，於后文將會仔細(xì)地介紹這個全新的避險策略「巨災(zāi)交換契約」其模型的建構(gòu)概念以及方式，并由蒙地卡羅模擬法計算出所需的交換數(shù)額人人色人人偷′`，最后黄片强奸大全，針對三種不同的巨災(zāi)風(fēng)險處理來進(jìn)行數(shù)值分析，藉由比較其「凈現(xiàn)金流量」和「期望效用」來驗(yàn)證該巨災(zāi)交換契約模型的可行性與有利性。

Currently, most existing models for polymer solutions are based on the concept of the cell or free volume (for example, the well— known Flory EOS and SS EOS).

因此女人高爱潮一级AA片视频下载，在此基礎(chǔ)上建立的模型不能很好地描述聚合物溶液和液體的性質(zhì)老女人肏屄视频。為了更加真實(shí)地反映液體的結(jié)構(gòu)，本文提出了"開放胞腔"的概念v黄片視頻。

Band on analysis of the river system and its formation, some characteristics of the river system are expounded herein such as fluidness, green ecology, resources, hydraulic, adjustability, human culture, integrity and so on. Functions of the river system is given such as natural function, service function, humanities and landscape function and disaster characteristics.

通過分析河流系統(tǒng)的概念和考慮河流系統(tǒng)組成特點(diǎn)美女让男人扒开退桶出白浆，詳細(xì)地論述了河流系統(tǒng)的流動性、綠色生態(tài)欧美性爱在线三区、資源性色欲色欲www图片、水能、可調(diào)控性人人爱人人人操人人干、人文性国产精美视频免费观看网址大全下载、完整統(tǒng)一性等；系統(tǒng)地提出了河流功能的具體內(nèi)容a毛片黑色丝袜，包括自然功能中国黄片、服務(wù)功能、人文景觀功能和災(zāi)害性能久久精品免费一区二区喷潮。

Secondly, in this part, we will introduce the notation of average geodesic curvature for curves in the hyperbolic plane, and investigate the relationship between the embeddedness of the curve and its average geodesic curvature. Finally, we will employ the Minkowskis support function to construct a new kind of non-circular smooth constant breadth curves in order to attack some open problems on the constant width curves for example, whether there is a non-circular polynomial curve of constant width, etc.

其次cao欧美色就是色，對雙曲平面上的曲線引入平均測地曲率的概念，并討論雙曲平面上凸曲線的嵌入性與它的平均測地曲率之間的關(guān)系摸,吸,操,插,干，其目的是為了將雙曲平面上曲線的性質(zhì)與歐氏平面中曲線的性質(zhì)作一些對比未满18岁禁止进入的网站；最后，我們利用Minkowski支撐函數(shù)構(gòu)造了一類新的非圓的光滑常寬曲線欧美一级黄片黑人操逼，其目的是想回答有關(guān)常寬曲線的一些未解決問題如是否存在非圓的多項式常寬曲線欧洲精彩性视频一区二区14？

Here, we will give an independent proof of the existence for inequality (2.1.3), and by the way, give an estimate on the width of the bi-enclosing annulus of closed convex curves in the plane. Secondly, in this part, we will introduce the notation of average geodesic curvature for curves in the hyperbolic plane, and investigate the relationship between the embeddedness of the curve and its average geodesic curvature.

其次，對雙曲平面上的曲線引入平均測地曲率的概念看的黄色网站，并討論雙曲平面上凸曲線的嵌入性與它的平均測地曲率之間的關(guān)系色久综合国产一区99精品，其目的是為了將雙曲平(來源：ABC論84文網(wǎng)www.abclunwen.com)面上曲線的性質(zhì)與歐氏平面中曲線的性質(zhì)作一些對比；最后国产日韩成人香蕉软件下载，我們利用Minkowski支撐函數(shù)構(gòu)造了一類新的非圓的光滑常寬曲線91久久国产综合精品女同国语，其目的是想回答有關(guān)常寬曲線的一些未解決問題如是否存在非圓的多項式常寬曲線？