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15 April 2006, Volume 25 Issue 2 Previous Issue    Next Issue

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Research and application on plan for city river bridgescape ZHANG Peng-tao，YAO Qi-ming，JIN Xin-hua 2006, 25(2): 1-3.  Abstract ( )   PDF (319KB) ( )   With the fast developing of economies and the rising stan dardof living，plan for bridgescape on the city river has been attracted atention gradually．For improving city environment and cityscape，the problems of bridgescape on the domestic river were introduced and the plan idea for bridgescape on the city river and the principle of renovation and construction were put forward．As an example，the application of idea and principle on Suzhou River was introduced．It was a good reference to the plan for bridgescape on the city river in China． References | Related Articles | Metrics

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Reinforcing effect analysis of converting simply-support into continuous for multi-span T shape free beam bridge JIN Xin-hua，YAO Qi-ming，ZHANG Peng-tao 2006, 25(2): 4-7.  Abstract ( )   PDF (255KB) ( )   Converting simply-support into continuous is the effectual reinforcement measure to improve ultimate bearing capacity of multi-span T shape flee beam bridge But some problem was also found in practice．Take example for reinforcing T shape free beam bridge with double spans(16.76m+16.76m)by using the measure，the result of theoretic analysis and calculation indicates that the bend bearing capacity in the middle of span Was improved，as the same time，the sheer bearing capacity of the continuous end of beam Was reduced.The advice Was advan ced that reinforcing the sheer bearing capacity of the continuous end of beam when the measure Was adopted to improve bend bearing capacity of multi-span T shape simply-support beam bridge． References | Related Articles | Metrics

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Calculating model determining increasing coefficient of internal forcees for continuous box girder bridges CHENG Xiang-yun 2006, 25(2): 8-11.  Abstract ( )   PDF (290KB) ( )   To calculate the increasing coefficient of internal forces for continuous box girder bridges the calculating model with two spring bearings is established．The analytical results of an example by this model coincided satisfactory with those by the traditional method,and it simplified the calculation process to a certain extent with the latter． References | Related Articles | Metrics

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The confirmation closure jacking force of continuous rigid frame bridge ZOU Yi-song，SHAN Rong-xiang 2006, 25(2): 12-15.  Abstract ( )   PDF (245KB) ( )   The analysis formula ofjacking force is deduced when the mid-span of a continuous rigid frame bridge is in closure．Based on Heergou extra-long span bridge，the computation and accomplishment of jacking force of the continuous rigid flame bridge are introduced． References | Related Articles | Metrics

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The new technology of strain-measurement for bridge static-dynamic load testing WANG Jian-hua，HU Da-lin，BAI Peng-xiang 2006, 25(2): 16-19.  Abstract ( )   PDF (268KB) ( )   During the bridge static-dynamic testing,how to decrease various interfering factors，and to improve the degree of reliability for eficiency of detection and measured value，is the problem that Was explored by engineers for many years．A type of strain-measurement sensor was introduced in this paper,which is used successfully in static-dynamic testing for plenty of bridges, and it solved a series of problems encountered in strain-measuring for bridge static-dynamic testing，and improved the reliability of efficiency and measured value in field work． References | Related Articles | Metrics

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Fire alarm systems for highway tunnel HAN Zhi 2006, 25(2): 20-24.  Abstract ( )   PDF (211KB) ( )   The main reason applied improperly for highway tunnel fire alarm system is to be not known well for the equivement performance．By testing the three kinds of tire alarm system，it is is gotten that the alarm time is afected by flow speed，smoke density and so on，and presented the test method and how to select fier slarm system． References | Related Articles | Metrics

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Geostress measurement of Kaiser effect in Tongyu highway tunnel XU Lin-sheng 2006, 25(2): 25-27.  Abstract ( )   PDF (159KB) ( )   Through geostress measurement by Kaiser effect method，it is found out that the general space stress state of rockmass in deeply-lying and especially long Tongyu highway tunnel belongs to the potential strike-slip type.The measured geostresses in the middle part of the tunnel are generally very large with the σl major principal stress of 33．04 MPa．So during the construction process，the problems ofhigh geostress and roekburst have to be taken into account． References | Related Articles | Metrics

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Non-nodal connection of brick and beam elements in finite element analysis WANG Jia-Lin，CHEN Shan-lin，XIAO Sheng-xie 2006, 25(2): 28-30.  Abstract ( )   PDF (223KB) ( )   A method is presented for connecting three-dimensioral brick and beam elements．Based on the analysis of the displacement and rotation of an arbitrary point within a brick clement，a series of multipoint constraint equations are raised to reflect the proper connections of brick and beam elements．The multipoint constraint equations are realized by their introduction into the beam element analysis process and the replacement of the beam element's degrees of freedom with those of the brick element．This method suits a variety of connections between such two types of elements．A numerical example demonstrates the accuracy and feasibility of the method． References | Related Articles | Metrics

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Calculation of continuous bridge transverse load-distributing influence lines with plane finite bar elements XU Yi，GAo Fei 2006, 25(2): 31-34.  Abstract ( )   PDF (183KB) ( )   Based on analysis and generalization of the existent calculating methods of bridge transverse load-distributing influence lines and aiming at the thoughtfulness of article [3】which narrating the methods of Calculation of Bridge Transverse Load-distributing Influence Lines with Plane Finite Bar Elements,A new method is proposed in the paper with the continuous bridge transverse formation simulated as a usual plane finite bar element model in a computer software，and its rightness and convenience warranted in the given calculation examples． References | Related Articles | Metrics

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The derivation of relationship between J integral and K1 in view of the plane stress state ZHOU Hai-long 2006, 25(2): 35-37.  Abstract ( )   PDF (160KB) ( )   The author deduced the relationship between J Integral and Stress Intensity Factor K1 in view of the plane stress state in detail，which was based on the documentary [1】【2】's derivation of relationship between J Integral and Stress Intensity Factor K1 in view of the plane strain state．Therefore，this derivation was with important theory value and referred meaning． References | Related Articles | Metrics

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Analysis and numerical calculation for the length of approach slap based on the strengthened filling of the abutment DING Jing-sheng，WU Guo-xiong，WANG Wei-hua 2006, 25(2): 38-41.  Abstract ( )   PDF (271KB) ( )   Setting approach slap and paving geogirds are two primary measures to reduce the bridge head bump．The length of the approach slap should be shortened even be cancelled as enhancing the rebound module of the padding in the back of the abutment．According to the data of the ground module heightened by paving geogirds to deal with the bridge head bump in the freeway from Liangping to Changshou in Chongqing，This article analyses the relation among the ground module，the depth of abutment and the length of the approach slap，which can be referenced in the correct design an d construction of the approach slap by utilizing finiteelement program． References | Related Articles | Metrics

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Simulation and analysis of ultra-thin whitetopping panel faulting CUI Peng，LI Yu-zhi，ZHANG Li，SHAO La-geng 2006, 25(2): 42-45.  Abstract ( )   PDF (328KB) ( )   ANSYS Software is utilized in the structural analysis of the panel faulting in Ultra-thin Whitetopping pavement(UTW)． Different contact conditions were simulated with various dimensions in the model，which include the panels without faulting and those with faulting to diferent extents at three diferent locations．The locations are the edge along the longitudinal joint,the edge along the transversal joint,and the cornel The mechanical properties of the upper panels were also discussed，as well as the reason and the pattern of the pavement breakage．The analysis was verified through the field test observations．It was pointed out that measures should be taken during the course of design and construction，to provide a good bonding condition between UTW and the underlying asphalt layer and to avoid early failures of UTW pavement． References | Related Articles | Metrics

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The Temperature Measure and Control for Hydration Heat of Concrete JIANG Jia-mao，ZHOU Shui-xing 2006, 25(2): 46-48.  Abstract ( )   PDF (141KB) ( )   The hydration heat of concrete is a common problem for hydration construction and long-span bridges during construction.To find out the temperature distribution rule on hydration heat of large volume concrete，an experimental model by made according to special ratio of conjugation．The continuous temperature cures were drawn during the concrete coagulating times．The experiment has been indicated the temperature located on core place Was very high，and the temperature changes were expressed in exponential cures．The test results were compared with the formula,an d got a good agreement．At last,some measures to control hydration heat of concrete were put forward． References | Related Articles | Metrics

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Effect of asphalt film thickness on short and long term aging of asphalt paving mixtures WANG Heng，YANG Da-tian 2006, 25(2): 49-51.  Abstract ( )   PDF (140KB) ( )   It is generally beloved that an asphalt paving mixture should have an adequate asphalt film thickness around the aggregate particles to ensure reasonable durability (resistance to aging)of the mixture．The minimum asphalt film thickness generally recommended ranges from six to eight microns．This study was undertaken to quantified the relationship between various asphalt film thickn ess and the aging characteristics of the asphalt paving mix,so that an optimum film thickness desirable for satisfactory mixdurability could be established ． References | Related Articles | Metrics

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Research on mixture design for bottom layer of asphalt pavement with semi-rigid base YU Chun-jiang，WANG Hong-xiang，YANG Xin-su，NI Fu-jian 2006, 25(2): 52-55.  Abstract ( )   PDF (215KB) ( )   Based on the selection on the proper raw materials,this paper presents 3 kinds of aggregate gradations and decided on the ultimate aggregate gradation after a series of laboratory tests．As the bottom layer ofthe asphalt pavement with semi-rigid base,the moisture stability and strength performance of the mixture are significant to the pavement performance．Therefore,these were considered carefully by several tests．The rutting tester produced by Helmut Wind corporation were used to estimate the moisture stability ofthe mixture．We also used the index ofcritical curvature strain energy to estimate the lower tempe rature anti-cracking perform an ceofthemixture． References | Related Articles | Metrics

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Application research on polymer fibre reinforcement bitumen concrete ZHANG Li-hua，CHEN Kai-liang 2006, 25(2): 56-57.  Abstract ( )   PDF (174KB) ( )   Polymer fibre reinforcement bitumen concrete is a new type of pavement material for high standard road．This paper discuss the action mechanism of the polymer fibre reinforcement material，from theory to practice,deals with the technics on mix proportion design and construction technology of polymer fibre reinforcement bitumen concrete． References | Related Articles | Metrics

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Mechanize construction technology of nature aggregate base-course CAO Yuan-wen，LIANG Nai-xing，FENG Li-qun 2006, 25(2): 58-60.  Abstract ( )   PDF (207KB) ( )   In this paper，mechanize construction equipment and technology about nature aggregate base-course is determined by test and analyze according to the special geological condition in province Xinjiang．The study conclusion really benefits from the execution． References | Related Articles | Metrics

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Three dimensional numerical simulation of confluence of debris flow and main river CHEN Chun-guang，YAO Ling-kan 2006, 25(2): 61-65.  Abstract ( )   PDF (313KB) ( )   To study the mechanism of confluence between debris flow and the main river，based on the theory of Newtonian and non-Newtonian fluid dynamics,the theoretical equation to describe the movement of debris flow in the confluence was established，and three-dimensional simulate model was also put forward，which includes numerical calculation method，the rheologic equation and the sediment deposit and transportation in a conjunction area．The calculation shows that this method is really feasible for an alysis of the distribution of sediment density and the change of water level，the calculation results are in good agreement with the model test data． References | Related Articles | Metrics

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Study on dynamic features of converge trough plate of the high-speed drainage structure TANG Hong-mei，CHEN Hong-kai 2006, 25(2): 66-69.  Abstract ( )   PDF (209KB) ( )   As one of the most effective techniques to control giant debris flow，the High-speed drainage structure is composed of both converge trough structure and high-speed drain trough structure．Especially,mechanical features ofconverge trough under impact ofdebris flow is the key technique in the High-speed drainage structure application．Mass-damp-spring dynamic model of the converge trough plateis established in this paper,further both deflection equation and dynamic equation of the converge trough are founded in structure mechanics theories，which set up basis for structure strength design an d deformation design ofthe plate．Research results are in efective application in Pingchuan debris flow． References | Related Articles | Metrics

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Route plan of selection and two-stays comprehensive fuzzy assessment in mountain hazardous areas GAO Chuan-dong，CUI Peng，WU Guo-xiong 2006, 25(2): 70-72.  Abstract ( )   PDF (218KB) ( )   In mounmin hazardous areas，being aimed at the characters of many complicated factors and fuzzification in road optimization planning，based on establishing the index system of the two-stayed comprehensive fuzzy assessment,the rights of the first and secondary influence factors are reasonanbly determined through Analytic Hierachy Process,and then，a two-stayed fuzzy assessment model for selecting the route plan is established by using the theory of fuzzy methematics，and improves the scientific character and the objectivity of selecting the route plan in mountmn hazardous areas．At last,Use polongzangbu basin as a example demonstrate the rationality and validity of the mode1． References | Related Articles | Metrics

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Mechanics of the wash-out of the particle bank slope by wave CAI Xiao-yu，LING Tian-qing，TANG Bai-ming，HOU Lie 2006, 25(2): 73-76.  Abstract ( )   PDF (301KB) ( )   In this thesis，based on the three steps of wave breaking on the particle bank-injection，run-up and wash down，the author analyzed the force and movement of particles on slopes，represented the mechanics ofthe wash-out of particle bank slopes by waves，designated the key factors which should be thought about when studying and preventing the wash—out destruction． References | Related Articles | Metrics

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The study of forming mechanism and remedial measures for No．6 specially large-scale deep stratum landslide of Shangsan highway LIN Xin 2006, 25(2): 77-82.  Abstract ( )   PDF (338KB) ( )   This paper mainly introduces the forming mechanism remedial measures and remedial effects for No．6 specially-large-scale deep stratum landslide which is located in Shang(yu)San(men)highway No．15 section(K92+324---K92+850)． References | Related Articles | Metrics

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Research of optimum design method to excavation slope CHEN Qiu-ru，LIANG Min 2006, 25(2): 83-86.  Abstract ( )   PDF (203KB) ( )   In the pape，based on the reliability analysis，cost analysis and risk an alysis of the slope，the design procedure and method of excavation slope is fomulated detailly．In the same time the relmive complete design method of slope is presented．It's a good supplement of the slope design． References | Related Articles | Metrics

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The research of protecting management and management system of the village highway YE Qiao-ling 2006, 25(2): 87-88.  Abstract ( )   PDF (176KB) ( )   This text primarily aim ats the usage circumstance of the village highways with the current management system of not perfect,bring upped the management mechaism in keeping with the market circulating regulation.Clear and definite cowgirl of duty with rights，with possibly little protect the resources with funds，satisfy village economy development need highway go through ability and service quantity,realize maximizing of highway resources and funds performance． References | Related Articles | Metrics

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Analysis of current problems and study on network layout model of urban transit LI Shu-qing，TENG Hong-wei，YUE Shun，MU Shou-ru 2006, 25(2): 89-92.  Abstract ( )   PDF (237KB) ( )   After making systematic analysis of current problems of our urban transit,the paper thinks that the irational transit network layout is a main reason of these problems，so that it has a study on the rational layout model of our urban transit References | Related Articles | Metrics

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A new AHP method for environmental influence's fuzzy comprehensive evaluation of post evaluation of highway net YANG Ri-hui，WANG Shou-xu 2006, 25(2): 93-95.  Abstract ( )   PDF (157KB) ( )   This article improved the traditional method of AHE. A three-demarcation matrix method was adopted together with the evaluation model of the combination of the analytical hierarchy process and multitiered fuzzy comprehensive evaluation to evaluate the environmental influence of comprehensive post evaluation of highway net．Therefore it call avoid the illegibility of index weight when the traditional nine-demarcation matrix was applied in constructing the judgment matrix,and it can reduce the determiner's subjective assumped． References | Related Articles | Metrics

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Analysis of problem and countermeasure on building road traffic management information system OU Ju-shang 2006, 25(2): 96-99.  Abstract ( )   PDF (275KB) ( )   Applying information technology in road traffic management is a very important method of enhancing man agement eficiency.But building road traffic management inform ation system faces problem in idea、management system、construction funds、construction plan 、dissemination etc，which effects badly construction and development ofroad traffic information system． erecting scientific constructing inform ation system idea,form ulating program on constructing information system，setting up steady construction funds，improving road traffic management system or set up integrated institute， which caIl make building road traffic information system steady，put road traffic management modernization forward and enhance road traffic management efficiency． References | Related Articles | Metrics

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The practice of mapping using aerial survey instruments transformed ZHOU Zu-yuan 2006, 25(2): 100-103.  Abstract ( )   PDF (292KB) ( )   This paper introduces the digital mapping between 1818 and computer on hardware and software． References | Related Articles | Metrics

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Research on the management process of logistics capabilities in supply Chain LIU Wei-hua，JI Jian-hua，WANG Ji-lin 2006, 25(2): 104-108.  Abstract ( )   PDF (318KB) ( )   The logistics capability is an important capability to guarantee the daily operation in supply chain．This paper analyzes the concept,the research status and the structure of the logistics capability in supply chain，discusses its several typical kinds logistics capabilities．From the point of‘plan-act-upervision& control’，it bring out the man agement process of logistics capability in supply chain．It also puts forward the five affecting factors of logistics capabilities and four main means to harmonize logistics capability in supply chain．After that,it brings forward the effect of the different node corporation in the process of logistics capabilities man agement．At last,the conclusion of this paper is given． References | Related Articles | Metrics

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The current development situation，question and countermeasure of road freight transportation industry of Yunnan Province FANG Jian-yuan，XU Mao-zeng，PENG Qing-song，PAN Shao-hui，ZHANG Wen-jun 2006, 25(2): 109-113.  Abstract ( )   PDF (322KB) ( )   Road transportation industry is the foundation industry of the national economy ，and the important part of integrated transportation system．Since our country reform and open to the world，Yunnan province road freight transportation has changed deeply and acquired rapid development．However,comparing with the need of fast development of national economy to road freight transportation，the development of the road goods transportation industry still can’t adapt to it far and far．According to the investigational data of the item “Yunnan province stations plan”as the foundation，this paper introduces the current development situation of road freight transportation industry of Yunnan Province，discusses the remaini ng problems in the development of road freight transportation，and proposes the countermeasures that specialize in the organizational structure adjustment in the road transportation，and it might have certain reference function on the reform which pushes into the road transport industry． References | Related Articles | Metrics

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A current situation of highway freight transport station in Yunnan Province and development countermeasure PAN Shao-hui，XU Mao-zeng，ZHOU Zhong-ying 2006, 25(2): 114-117.  Abstract ( )   PDF (270KB) ( )   This text is a part of the road transport developing and planning in Yunnan Province”eleven five”．According to highway freight transport sample investigation，such as the stations’function，stations managing，serivce object,management supporting,customer's relation，marketing management，quality control，throughput，economic characteristic，etc．Analyses current situation and main existing problems at present of freight transport station in Yunnan．haves put forward the development countermeasure of highway freight transport station in Yunnan Province． References | Related Articles | Metrics

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The fuzzy comprehensive evaluation by matter-element model apply in risk analysis WANG Yu，XIAO Sheng-xie 2006, 25(2): 118-121.  Abstract ( )   PDF (166KB) ( )   The quantitative description on risk an alysis is the assumption of risk management．Fuzzy comprehensive evaluation by matter-element model serve as a tool provide us a way to assess the risk．This article introduce the basic theory of the method and the practical analysis has proven that this method is preferable and feasible． References | Related Articles | Metrics

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Fuzzy AHP evaluation of engineering project risk ZHENG Zhan-fei，ZHOU Zhi 2006, 25(2): 122-124.  Abstract ( )   PDF (148KB) ( )   This paper has carried on research to the risk identification of the project．To overcome the question that depends too much on expert's subjective judgement in traditional risk identification，this paper structure the comprehensive evaluation mathematics model of the risk identification of project．Through iterative algorithm of AHP analysis．make surc the important degree of the sub project in risk analysis，then combine expert's subjective judgement with objective quantitative analysis，and distinguish the risk through identification models．In the end state the application ofthis method through the instance． References | Related Articles | Metrics

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Application of extensible comprehensive evaluation model for appraisal of engineering risk JIA Sa-sa，LIAO Jiang，ZHOU Zhi 2006, 25(2): 125-127.  Abstract ( )   PDF (180KB) ( )   By using the matter element theory and extension method，comprehensive evaluation model of engineering risk is established for solving problem of evaluation of engineering risk．This model provides all useful method for the engineering project risk management． References | Related Articles | Metrics

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Construction-agent system project management pattern study based on principle-agent theory DENG Zhong-mei 2006, 25(2): 128-131.  Abstract ( )   PDF (248KB) ( )   The paper uses principle-agent theory analyzing the current construction-agent system which popularized by our govemment and puts forwards some proposal to perfect construction-agent system，that is we should set up urge restriction mechanism，effective contract man agement system and carry out construction guarantee and insurance system． References | Related Articles | Metrics

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Comparative research on the putting into factors of high-grade road area difference LIU Lang 2006, 25(2): 132-133.  Abstract ( )   PDF (106KB) ( )   In high-grade road engineering project，manual work cost，material cost．compensation and arrangement allowance cost of land and tree are the main component part in total expenses of construction project．This article will analyze and research on it． References | Related Articles | Metrics

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Research review on the applications of geo-information science in the distributed hydrological model WANG Miao lin，FU Hua，GAO Pan yu 2006, 25(2): 134-137.  Abstract ( )   PDF (301KB) ( )   Hydrological model is needed for the research on the hydrology and water resources under the chan ging condition．In the lumped hydrological model the hydrological variables and parameters are assumed as uniform in the whole basin．Due to the development of geo-information science，which Can deal with variety of hydrological variables and parameters,the distributed hydrological model have been getting more atention and development．This paper reviews the studies on hydrological model and the method ofgeo-information science for the distributed hydrological mode1． References | Related Articles | Metrics

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SCS monthly water model and its application WANG Miao-lin， FU Hua 2006, 25(2): 138-141.  Abstract ( )   PDF (288KB) ( )   SCS monthly wa ter balance model，which based on SCS hydrologic model，Was used to simulate the monthly runof of 27 sub-basins in the Dongjiang,Ganjiang,Hanjiang and Yellow River basin．It Was found that：a)the runof simulation results are relatively satisfactory；b)the values of three parameters are steady；C)the applicability of the model is stronger and it call be applied in humid，semi-humid and arid area；d)the structure of the model is simple and only has three parameters．Finally,a scheme that takes advantage ofremote sensing techniques and GIS powerful management capability are discussed and prospected． References | Related Articles | Metrics

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Three gorges ship lock’S influnces to Chongqing navigation and its solution ZHANG Wen-jun，PAN Shao-hui，XU Mao-zeng，PENG Qing-song，FANG Jian-yuan 2006, 25(2): 142-145.  Abstract ( )   PDF (263KB) ( )   The completation of the Gorge ship lock has greatly improved the navigation of the uppee part of Changjiang River, lowered the management cost of the ships，increased the navigation's competition with the others transportation，however,the condition at present can't attain to the designed requirement it also brings some negative problem．The article introduces the situation now faces and the influence it has taken，put forward some solution to it． References | Related Articles | Metrics

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Study on the situation of sand-gravel extraction in the river channel LIU Rong，QIAN Zhao-yan，ZHAO Zhi-zhou 2006, 25(2): 146-149.  Abstract ( )   PDF (268KB) ( )   A large volume of sand will be needed along with the fast development of the economic．Based on the analyses about the disadvantages of the unlawful sand-gravel extraction，the exiting problems in man agement of sand-gravel mining，a corresponding policy and measurement are proposed.To popularize application of artificial sand to replace natural sand，and adjust the profit rate of sand mining to social average level，the demand for the sand-gravel extracted from the river channel will be decreased．On the condition that to generalize the experience of management in the Changjiang River,establish a scientific program to extraction，and enforce the power ofmanagement,a scientifically and orderly way ofriver sand-extracting will turn to true References | Related Articles | Metrics

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Experiment study on in-taking water condition of Chongqing east& west power plant ZHANG Xiao-ming，AN Li，WANG Zhao-bing 2006, 25(2): 150-153.  Abstract ( )   PDF (199KB) ( )   According to the model test on the river reach where Chongqing East&West power plant lied，the sediment aggradation and river evolvement,the chan ge of flow condition，the efect of floater on inlet were an alyzed,The layout of inlet was optimized also．The results show that the intaking conditions is beter an d the influence of floater is smaller． References | Related Articles | Metrics

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Research on function of draught expression of ship shape TANG Yi-hu 2006, 25(2): 154-155.  Abstract ( )   PDF (80KB) ( )   This paper uses function of draught method to study the ship shape．It applies CAD of ship，expression of series ship type and transform ，derives new ship shape；It applies ship design ofparameter． References | Related Articles | Metrics

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Notes on the paper‘‘Three Kinds of Generalizd Convexity" WANG Qi-lin，WU Yun 2006, 25(2): 156-157.  Abstract ( )   PDF (113KB) ( )   This paper notices that the proof of Theorem5．1 of Ref.【1】is incorrect,and a Lemma．the right proof of the Theorem and corollary of it are given． References | Related Articles | Metrics

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Point estimates and convergence domain on the modified Newton iteration YU Pei 2006, 25(2): 158-159.  Abstract ( )   PDF (133KB) ( )   Let f:E→F be a Frrehet derivable map from one Banach space to anothet and A:F→E be a linear map with bounded inverse．We call the iteration Zn+l=Zn-A??(Zn)，VnE No，a generalized chlrd method iteration.When A=D?(Zo)-1，the iteration is the modified Newton m~hod iteration．The convergence an d convergence domain by recalls of Km-ropomm’s Domain criteria and Smale s point estinate criteria are studied．It contains a special case，the modified Newt on iteration convergence when α(f,z)<3-2√2．Thisdemonstratesthatnumber3-2√2 is universal for many concreteite rations． References | Related Articles | Metrics

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The optimal exercise price of the American put option LI Li-ying 2006, 25(2): 160-162.  Abstract ( )   PDF (196KB) ( )   This paper an alyses and computes the optimal exercise price ofthe American put option,by using the“FFT-RK”method． At last,numerical examples show that this method is eficient and accurate． References | Related Articles | Metrics