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Platform: |
Size: 24121344 |
Author: 刘澄玉 |
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Description: 本文提出用无向图来描述电力系统网络结构, 邻接多重表是无向图的一种比较好的存储结构, 利用邻接多重表能比较方便的实现对无向图中节点的计算和边的操作,如统计节点的度, 增加一条边, 删除原有的边。而这些都是节点优化编号中的关键之处。实践证明, 利用邻接多重表比较容易编程, 节约内存, 对大系统更是如此。- In fact, the connecting relationsh ip is undi2
rected graph in data relation, and adjacency multi2list is a
good storing structure of undirected graph. In undirected
graph,w e can conveniently realize all of the operation, such
as statistics the degree of node, add a edge, and delete a
edge. The operation mentioning above is the key in the node
optimizing code. In p ractice, it make p rogram more conve2
niently,more econom ical.
Platform: |
Size: 112640 |
Author: 吴榕 |
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Description: This book is aimed at a reader who has studied an introductory book on mathemat-
ical fi nance and an introductory book on C++ but does not know how to put the
two together. My objective is to teach the reader not just how to implement models in C++ but more importantly how to think in an object-oriented way. There are already many books on object-oriented programming however, the examples tend not to feel real to the fi nancial mathematician so in this book we work exclusively with examples from derivatives pricing.-This book is aimed at a reader who has studied an introductory book on mathemat-
ical fi nance and an introductory book on C++ but does not know how to put the
two together. My objective is to teach the reader not just how to implement models in C++ but more importantly how to think in an object-oriented way. There are already many books on object-oriented programming however, the examples tend not to feel real to the fi nancial mathematician so in this book we work exclusively with examples from derivatives pricing.
Platform: |
Size: 647168 |
Author: walty |
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Description: 关于最新的边界元快速算法的专著，提出了一种代数方法来加快边界元方程组的求解。值得一看。-Boundary Element Methods (BEM) play an important role in modern numer-
ical computations in the applied and engineering sciences. Such algorithms are
often more convenient than the traditional Finite Element Method (FEM),
since the corresponding equations are formulated on the boundary, and, there-
fore, a signifi cant reduction of dimensionality takes place. Especially when the
physical description of the problem leads to an unbounded domain, traditional
methods like FEM become unalluring
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Size: 10357760 |
Author: john thames |
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Description: simpower system 5, model and simulate ical power sytem electr
Platform: |
Size: 1743872 |
Author: Metodi |
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Description: tError Con trol Approach of Random L inear Network Coding.A im ing at random linear netwo rk coding, th is paper p ropo ses an er ro r cont ro l method w h ich combines po int2 po int
check ing er ro r and end2 end ret ransm ission . By vir tue of the robustness of random linear netwo rk coding, th is method adop ts
th ree dimensional par ity check ing code to imp lement po int2 po int check ing er ro r, and let er roneous packets no t take par t in cod2
ing . W hen a sink node can no t decode the info rmat ion com ing f rom source node, it t ransm its feedback info rmat ion to source
node to request ret ransm ission . Theo ret ical analysis and simulat ion results show that, by using larger Galo is f ield and larger
packet, the p ropo sed method has h igh p robability to elim inate t ransm ission er ro r including global netwo rk coding ver texes er2
ro r, and make sink nodes integrally receive info rmat ion f rom source node at low er ret ransm ission rate .
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Size: 201728 |
Author: sunwei |
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Description: 在单片机应用系统中利用C 语言编程具有一定优点。介绍了用C 语言实现数字频率计的软件设计。介绍了C 语言使
用中几个关键问题。并对数字频率计的主程序、显示程序中小数点处理程序进行了论述。全部软件编程不是采用常规的汇编
语言, 而是利用C 语言强大的浮点运算能力, 实现频率计的软件设计。因此提高了频率计的测量精度。具有一定的实用价值。-The ar t icle int roduces the sof tw are of digital cymometer and int roduces the key p roblem using C lan2
guage . Instead of comp iler language, themain p rogram and disp lay p rogram of digital cymometer are designed by
C language . Th is method enhances the measurement p recision and po ssesses def inite p ract ical value .
Platform: |
Size: 94208 |
Author: 才子 |
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Description: iCal中国农历2010年简体中文,用于练习-iCal Chinese Simplified Chinese Lunar New Year 2010
Platform: |
Size: 2328576 |
Author: 郭健 |
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Description: Trajectory Planning for Automatic Machines and Robots
This book deals with the problems related to planning motion laws and tra- jectories for the actuation system of automatic machines, in particular for those based on electric drives, and robots. The problem of planning suitable trajectories is relevant not only for the proper use of these machines, in order to avoid undesired effects such as vibrations or even damages on the mechan- ical structure, but also in some phases of their design and in the choice and sizing of the actuators. This is particularly true now that the concept of “elec- tronic cams” has replaced, in the design of automatic machines, the classical approach based on “mechanical cams”.
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Size: 14432256 |
Author: imax11 |
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Description: 给出了一种新的基于小波多尺度分解的分层图像融合方法. 其基本思想是先对源图像
进行小波多尺度分解 其次, 按照融合规则, 采用基于区域特性量测的选择及加权算子去构造融
合图像对应的小波系数 最后, 通过逆小波变换重构融合图像. 该方法被成功地用于图像的融合
处理. 此外, 利用熵、交叉熵、互信息、均方根误差、峰值信噪比等参量, 对该融合方法的融合性能
进行了评价与分析. 实验结果表明, 该融合方法是十分有效的- A novel h ierarch ical image fusion scheme based on wavelet mult iscale de2
compo sit ion is p resented. The basic idea is to perfo rm a wavelet mult iscale decompo si2
t ion of each source image first, then the wavelet coefficient s of the fused image are
const ructed using region2based select ion and weigh ted operato rs acco rding to different
fusion rules, finally the fused image is obtained by tak ing inverse wavelet t ransfo rm.
Th is app roach has been successfully used in image fusion. In addit ion, w ith the use of
the parameters such as ent ropy, cro ss ent ropy, mutual info rmat ion, roo t mean square
erro r, peak2to2peak signal2to2no ise rat io, the perfo rmance of the fusion scheme is e2
valuated and analyzed. The experimental result s show that the fusion scheme is effec2
t ive.
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Size: 385024 |
Author: liuzhao |
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Description: iCal日历风格 纯JS代码 美观大方-nice iCal calendar style pure JS code
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Size: 93184 |
Author: liuheng |
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Description: OPTICAL TDM OFDM PONOPT ICAL TDM OFDM PONOPT ICAL TDM OFDM PONOPTICAL TDM OFDM PON-OPTICAL TDM OFDM PONOPTICAL TDM OFDM PONOPTICAL TDM OFDM PONOPTICAL TDM OFDM PONOPTICAL TDM OFDM PONOPTICAL TDM OFDM PON
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Size: 7168 |
Author: sakthivel |
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Description: The emergence of stronger safety and environmental
norms, the need for early decision mechanisms, together
with the widespread di usion of sensors of all kinds, result
in an increased need for research investigations in the eld
of fault detection and isolation (FDI). In particular, e-
cient and robust methods for fault and damage detection,
diagnostics and localization, are necessary for condition-
based maintenance and for fatigue and aging prevention.
Many approaches to FDI problems assume that a model of
the monitored system is available. This is a reasonable as-
sumption since many machines and processes rely on phys-
ical principles and models can be built on that basis (Ljung
(1999)). However, it is often argued that a major drawback
of model-based FDI methods lies in the requirement of a
precise model of the system to be monitored. In particular,
changes in the functioning modes and un
Platform: |
Size: 174080 |
Author: hassan |
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Description: 这是一篇关于半监督的论文，半监督学习问题广泛存在于现实世界中, 已经成为目前机器学习和模式识别领域中的一个研究热点. 文章
综述了半监督学习问题的基本思想、研究现状、常用算法及其一些应用领域, 分析了目前存在的主要困难, 并指出需进一步研究的几个问题.-Sem-i supervised learning has been w idely used in the w orld and become a hot topic in the resear ch
field of machine learning and pattern recog nit ion. T he paper summarizes the basic assumption, the resear ch
situat ion at present , and the alg orithms w hich w as used to reso lve some pract ical pro blems. Main dif f icu-l
t ies and the questio ns w hich w ill be solved in the future are also show n.
Platform: |
Size: 221184 |
Author: 刘辉 |
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Description: 针对基于贝叶斯原理的序贯蒙特卡罗粒子滤波器出现退化现象的原因, 以无敏粒子滤波(U PF)、辅助粒子滤波
(A S IR) 及采样重要再采样(S IR) 等改进的粒子滤波算法为例, 对消除该缺陷的关键技术(优化重要密度函数及再采样) 进行了
分析研究。说明通过提高重要密度函数的似然度、引进当前测量值、预增和复制大权值粒子等方式, 可以有效改善算法性能。
最后通过对一无源探测定位问题进行仿真, 验证了运用该关键技术后, 算法的收敛精度和鲁棒性得到进一步增强。- Abstract:W e analyze the degeneracy phenomenon of sequen t ialMon te Carlo part icle f ilters based on
bayesian theo rem , pu t focu s on the key techn iques ( good cho ice of impo rtance den sity and u se of
resamp ling ) to reduce it s effect s. Several imp roving schemes such as the U n scen ted Part icle F ilters
(U PF) , the A ux iliary Samp ling Impo rtance Resamp ling (A S IR ) and the Samp ling Impo rtance Resamp ling
(S IR ) algo rithm s are in t roduced to illu st rate th rough increasing the likelihood of the impo rtance den sity o r
inco rpo rat ing new measu remen t, o r rep licat ing part icles w ith large w eigh t s w ith in the generic f rame of
part icle f ilters, the convergence accu racy and robu stness behavio rs of the algo rithm can be effect ively
imp roved. A typ ical passive detect ion and locat ion p rob lem is simu lated to p rove above conclu sion s.
Platform: |
Size: 297984 |
Author: Haiser |
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Description: 为满足精细、短时天气预报的需求, 我国地面自动站( AWS) 观测系统的建设日趋完善。AWS
资料在数值预报系统中没得到充分使用的原因之一是AWS 观测资料的特殊性及数值预报系统缺少有
效针对AWS 观测资料的质量控制( QC) 方案。-With the enhancement of the meteorolo gical o bser vation system in China, the Automatic
surface Weather observat ion System ( AWS) is coming into the perfect condit ion. Local AWS netw ork
has been setup in many areas and much attent ion has been paid to the applicat ion of AWS data. Somehow,
data quality tur ns to be one of the roadblock in the w ays of AWS data applicat ion. In or der to fulfill the
funct ion of AWS data bet ter, a feasible observat ion data quality co nt ro l module should be designed to
make sure AWS data that used in the meteo rolog ical r esearch and o peration w ith a higher quality. The
AWS QC module in this paper consult the advantag e of other AWS Q C module of adv ance count ries and is
bro ug ht forw ard consult ing the char acteristic of AWS and the requirement of the high reso lut ion Numer ical
Weather Pr edict io n( NWP) operat ional mo del.
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Size: 428032 |
Author: wanggen |
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Description: 医学图像配准，2D_3D医学图像配准论文-In 2D-3D Medical Image Registration (MIR), preoperative 3D CT images are registered
with intraoperative 2D X-rays images obtained by fluoroscopy or Electronic Portal Imag-
ing Devices (EPID). 2D-3D MIR is established by computing Digitally Reconstructed Ra-
diograph (DRR) images rendered from the volumetric data and is useful in many med-
ical procedures where surgical planning is undertaken using volumetric data prior to
treatment, such as in radiation therapy treatment and image guide surgery. The conven-
tional approach used to render DRR images is a computationally expensive process and
forms a bottleneck in 2D-3D MIR. This paper evaluates the registration performance of
a 2D-3D MIR system which attempts to improve the rendering performance by reduc-
ing the number of intersections between the rays cast and internal spaces within the CT
volume by using an Octree compression. An Octree compressed CT volume comprises
fewer internal spaces, each containing voxels which shar
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Size: 1527808 |
Author: 刘坤 |
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Description: : 针对实际振动位移难以获取的问题, 利用振动位移与加速度信号之间的关系, 先对采样后的加速度信
号采用时域数值积分,得到含有趋势项的速度信号及位移信号,再采用拟合多项式极值的方法, 消除积分过程
中产生的趋势项,从而得到更为精确的速度和位移信号. 算例表明, 利用拟合多项式极值消除趋势项的方法,
得到的位移时程曲线拟合精度高-: In pract ical engineering , the collection of displacement data is mo re dif ficult than that of the
acceleratio n data in the time-domain .Displacement sig nals w as g ot f rom acceleration s ignals using
aumerical integrat ion , wi th the t rend o f erro r. Poly nomial fit ting method o f ex t reme value to eliminate
the trend of erro r w as proposed . More precise di splacement data can be acquired f rom thi s algo rithm.
The example show s that thi s alg orithm can get hig h accuracy displacement data f rom the acceleration
data mo re easi ly .
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Size: 137216 |
Author: lantian |
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Description: 超酷日历控件，利用jQuery+CSS创建，可以添加到自己网站上。-Cool calendar control, using jQuery+ CSS created, you can add to your own website.
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Size: 95232 |
Author: 马硕 |
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Description: PHP iCalendar is a php-based iCal file parser. Its based on v2.0 of the IETF spec. It displays iCal files in a nice logical, clean manner with day, week, month, and year navigation. It supports 25 languages.-PHP iCalendar is a php-based iCal file parser. Its based on v2.0 of the IETF spec. It displays iCal files in a nice logical, clean manner with day, week, month, and year navigation. It supports 25 languages.
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Size: 247808 |
Author: ALI GHALAMBAZ |
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