A closed form solution to segment 3D motion using straight-line optical flow

A closed form solution to the problem of segmenting multiple 3D motion models was proposed from straight-line optical flow. It introduced the multibody line optical flow constraint （MLOFC）, a polynomial equation relating motion models and line parameters. The motion models can be obtained analytically as the derivative of the MLOFC at the corresponding line measurement, without knowing the motion model associated with that line. Experiments on real and synthetic sequences were also presented.     

Near Crack Line Elastic-Plastic Analysis for an Infinite Plate Loaded by a Pair of Point Shear Forces

The near crack line analysis method was used to investigate a crack loaded by a pair of point shear forces in an infinite plate in an elastic-perfectly plastic solid. The analytical solution was obtained, that is the elastic-plastic fields near crack line and law that the length of the plastic zone along the crack line is varied with external loads. The results are sufficiently precise near the crack line and are not confined by small scale yielding conditions.     

A Heuristic Method for Two-sided Assembly Line Balancing Problem

A two-sided assembly line is typically found in plants producing large-sized products. Its advantages over a one-sided line and the difficulties faced in two-sided line balancing problems were discussed. A mathematical model for two-ALB problem was suggested. A modification of the “ranked positional weight” method, namely two-ALB RPW for two-ALB problems was developed. Experiments were carried out to verify the performance of the proposed method and the results show that it is effective in solving two-sided assembly line balancing problems.     

Critical Conditions for Left-Turn Lane’s Stop Line Backwards Setting Under Exclusive Left-Turn Phase

Aiming at the problem that the vehicles always turn left in advance which causes heavy conflicts in the intersection and effected traffic efficiency,the solution of the left-turn lane’s stop line backwards setting was proposed,and the critical conditions on the stop line’s setting were studied.Firstly,we studied the characteristics of trajectories distribution in the release process of turning left in advance vehicles.Based on that,we proposed to move the stop line backwards to solve the problem of turning left in advance.Considering the intersection’s geometric features and the vehicle operation features,the geometric critical condition was given for setting the position of left-turn lane’s stop line.And then the model of left-turn vehicles’queuing length was established based on queuing theory and traffic wave theory.By using queuing length model,the flow restrictions of stop line backwards could be found.Assuming left-turn vehicles’arrival rate is stable in a certain period of time,the minimum green time and the maximum red time of left-turn phase were given after the stop line was set up.According to the changes of the vehicles’turning paths,the shortest yellow setting recommendation was given.Finally,the application of the critical limits used in stop line backwards setting was demonstrated.The research result could provide a theoretical basis for traffic signs and markings’setting and perfect the relevant laws and regulations.     

个性风格——一汽奥迪A4 S Line

8月4日，一汽奥迪A4 S line正式上市，售价31.9万元。 一汽奥迪A4 S line在原A4 1.8T舒适版的基础上进行了升级，主要不同是配备了氙气大灯，大灯自动清洗，前进气格栅和侧防擦条S Line标示，新款全红尾灯，行李箱一体式扰流板等。     

KEY TECHNOLOGY IN INTELLIGENT CONTROL FOR SHEET METAL DEEP DRAWING

Introduction　　 With development of economics and furtheropening,competitions in market are intensive.The margin between the material cost and price ofproducts becomes small,which compels companiesto pursue higher rate of productivity and quality.The rate of productivity has been improvedthrough high pressing automation,but in order toget satisfactory quality of products under distur-bances,on- line measurement,identification,pre-diction and on- line control must be realized. Intel-ligentcont…     

Research on Characteristics of the Lateral Settlement Trough Caused by Shield Construction

Introduction Shanghai No.2 Metro line is an east-west linewhich is perpendicular to No.1 Metro line. Thetest research in situ was carried out in a place be-tween Longdong Road Station and Central ParkStation. The longitudinal slope changes largely inall the range. The stratum passed through is Qua-ternary Period grey silty clay. The tunnel in thissection is comprised of the prefabricated reinforcedconcrete liner, 5.5 m in internal diameter, 6.2 min external diameter, 1 m in ring width, 0…     

Path Planning of Planar Kinked Line Seam by Visual Servoing for Robotic Welding

Welding path planning can substitute for the manual teaching process of the robot and can promote the autonomous level of the robotic welding. A path planning method by visual servoing was presented, in which the optimal angle of charge-coupled device (CCD) camera was also planned. Aiming at planning two forms of kinked line seams, obtuse angle seam and right angle seam, a practicable solution was put forward. In this solution, the intersection of two adjacent straight segments is detected in each local seam image, and if intersection is found, the seam errors are calculated using the next straight segment. The experimental results show that kinked line seam can be well planned using this solution.     

A Theoretical Model on Solvus Line Prediction of Film and Its Application in Nanogranular Al-Cu System

A theoretical model on the solvus line prediction of a film was proposed and applied to a nanogranular Al-Cu system. The calculation results show that the solvus line of solute Cu will markedly lower with the decrease of grain size, namely, the starting temperature of θ(Al_2Cu) precipitation in a nanogranular Al-Cu film will markedly lower than that of conventional coarse grain alloy with the same Cu concentration, and the precipitation temperatures calculated are comparable with the experimental ones. The theoretical model can be simply used to calculate the starting temperature of precipitation in Al-Cu films under three states: ① films with substrate; ② films without substrate; ③ ultrafine grain bulk alloy. As a result, the model is universal, moreover, can be, in principle, used to predict precipitation temperature in other systems.     

Axi-symmetric active earth pressure for layered backfills obtained by the slip line method

The axi-symmetric active earth pressure for layered backfills was investigated using the slip line method. Due to different soil properties, the interfaces of the soil layers were considered as discontinuity surface. Accordingly, the change of the major principal direction was obtained and a new computation scheme was proposed to deal with the discontinuity in the calculation, finally the slip line method was extended to layered backfills. Results indicate that, the major principal direction, as well as the earth pressure, has a finite jump on passing the soil interfaces. The magnitude of the jump depends on the soil properties mainly. Generally, the active earth pressure when a strong layer is overlying a weak layer is much larger than that when the weak layer is lying on the strong layer. The present solution can be reduced to plane strain case and it has been compared with Rankine's and Coulomb's results, and a good agreement is observed.     

Dynamic Responses of Long-Span Transmission Tower-Line System Subjected to Broken Wires

A macroscopic finite element modeling approach was proposed to calculate the vibration of a tower-line system subjected to broken wires with software ANSYS/LS-DYNA. In the finite element model, not only the nonlinearity of wires and suspension insulators are considered, but also the support towers are included. The incremental and iterative approaches are combined by applying the unbalanced loads incrementally during each iteration cycle. The approach was illustrated with an example of a Hanjiang-River long-span transmission line system subjected to a shield wire and a conductor failure, respectively. The analysis results showed that the proposed dynamic simulation approach can demonstrate the kinetic process of the tower-line system subjected to wire ruptures: The frequencies of line components were lower and densely distributed, but the frequencies of tower components were higher and sparsely distributed. Anyhow, the dynamic effects of wire ruptures on tower-line system could not be ignored in analysis of tower-line system subjected wire failures.     

U型不完全多目标拆卸线平衡问题建模与优化

针对U型布局所具有的生产柔性强、效率高等优点,结合仅需考虑需求零部件和危害性零部件的实际拆卸过程,提出U型不完全拆卸线平衡问题(U-shaped partial disassembly line balance problem,UPDLBP),以最小化工作站数量、空闲时间均衡指标、拆卸深度和拆卸成本为优化目标建立数学模...     

PERFORMANCE COMPARISON OF ECG COMPRESSION ALGORITHMS BASED ON CLINICAL DIAGNOSIS

IntroductionIn the research area of ECG,with the inter-vention of computer technology,data compressionis presenting more and more important role.Forexample,increase storage capacity of ECG's asdatabases for subsequent comparison or evalua-tion,feasibility of transmitting real- time ECG'sover internet,implementation of cost effectivereal- time rhythm algorithms,economical rapidtransmission of off- line ECG's over internet to aremote interpretation center,improved functionali-ty of ambulator…     

Study of the mechanism on the apoptosis induced in Human leukemia cell line K562 by the combination of indole-3-acetic acid and horseradish peroxidase

Objective To investigate the mechanisms of apoptosis induced in Human leukemia cell line K562 by the combination of indole-3-acetic acid and horseradish peroxidase. Methods Human leukemia cell line K562 were exposed to indole-3-acetic acid （IAA） at 20, 40, 60, 80 or 100 mol/L and horseradish peroxidase（HRP） at 1.2 g/mL for varying times. MTT assay was applied to detect the cell proliferation. Flow cytometry was performed to detect the arrest of cell cycle. Terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling （TUNEL） assay was used to measure apoptosis. 2, 7-dichlorofluorescin diacetate （DCFH-DA） uptake was measured to determine free radical by confocal microscope. Content of malondiadehyde （MDA） and activity of superoxide dismutase （SOD） were measured by biochemical methods. Results IAA/HRP initiated growth inhibition of K562 cells in a dose- and time-dependent manner. Flow cytometry revealed that cell cycle arrested at G1/G0 after 24 hours treatment. After 72 hours treatment, apoptotic rate of 100 mol/L IAA group increased to 43.9 %, which was 5 times that of control（P〈0.01）. Content of MDA and activity of SOD increased respectively in treatments compared with control. Meanwhile, IAA/HRP stimulated the formation of free radical, which was increased by IAA concentration-dependently. Conclusion The combination of IAAand HRP can inhibit the growth of Human leukemia cell line K562 in vitro by inducing apoptosis which is associated with the increase of free radical. The combination of IAA and HRP might be a promising chemopreventive and chemotherapeutic agent against human leukemia.     

Local Tensile Strength of Connection Between H-Steel Beam Flange and Concrete-Filled Circular Column Tube with Through Diaphragm

This paper focused on investigating local tensile strength of connection between steel beam flange and concrete-filled circular column tube with through diaphragm. Three specimens were designed and tested to failure,and the structure behavior was studied by experiment and FEM analysis. On the basis of the results obtained, an estimation for local plastic and ultimate strengths of the connections using yield line theory was attempted, which results in a good prediction.     

DESIGN ISSUES FOR BIT RATE-ADAPTIVE 3R O/E/O TRANSPONDER IN INTELLIGENT OPTICAL NETWORKS

IntroductionWith the rapid progress of Optical Add- DropMultiplexer and Optical Cross- Connect( OADM/OXC) technologies,itis becoming possible for car-riers to provide high- speed services such as OC- 48/OC- 1 92 and Gigabit Ethernet transmission chan-nels directly from the optical domain. Line speedsof electrical layer devices such as IP routers andATM switches are continually growing to satisfythe increasing demands of data,as evidenced bythe introduction of line card speeds of OC- …     

ASYMPTOTIC ELASTIC STRESS FIELD NEAR A BLUNT CRACK TIP IN AN ANISOTROPIC MATERIAL

IntroductionThe Williams' [1] approximate solution ob-tained with the characteristic expansion method isused for the calculation of stress distribution of anideal crack.The idealcrack is regarded as a mathe-matical line,so the crack tip becomes a singularpoint in this method. The applicability ofWilliams' solution is limited to a small annular re-gion after the elimination of a small region contain-ing the crack tip.However,in real situations,acrack tip generally has a curvature to some exten…     

REAL-TIME DETECTION OF SURVIVIN mRNA EXPRESSION IN CERVICAL CANCER CELL LINES USING MOLECULAR BEACON IMAGING

Objective To detect the expression of survivin mRNA in cervical cancer cell lines using molecular beacon imaging technology. Methods Human cervical cancer cells （HeLa and SiHa） and human fetal lung fibroblast HFL-I were cultured in vitro. After adding 100 nmol/L survivin mRNA molecular beacon, the fluorescent signals were observed under fluorescent microscope. The expressions of survivin in cervical cancer cells and HFL-I cell were examined by immunocytochemical streptravidin-biothin peroxidase （SP） assay at the same time. Results Two kinds of survivin mRNA molecular beacon, with different color fluorescence, had strong fluorescent signal in cervical cancer cell lines, and the signal in SiHa cell line was stronger, but these signals were not found in HFL-I ; Immunocytochemical staining of positive survivin was located in the cytoplasm of cervical cancer cell lines HeLa and SiHa, whereas, no expression of survivin was detected in HFL-I cell line. Conclusion The technology of molecular beacon imaging can be used to detect the expression of survivin mRNA in viable cells successfully, and may provide a new approach to the diagnosis of early stage cervical cancer and the following-up in the clinic.     

Parameter identification algorithm for fault location using one terminal data based on frequency domain

Fault locationtechniques for power systemhavebeen investigated for many years.The quicker theaccurate location of a fault,the faster the electricpower restoration of service.The fault location techniques can be classifiedintot wo classes:one uses the data fromone ter minalof trans mission line;the other uses the data fromboth ter minals.The accuracy of one ter minal faultlocators is affected by the assumptions about thefault resistance,the source i mpedance,and the cur-rent flowinto fault from…     

Traffic Scheduling in WDM Passive Optical Network with Delay Guarantee

IntroductionWDM passive optical network (PON) is an at-tractive solution for future broadband access net-work in that it offers the potential of large capaci-ty, network security and data transparency[1]WDM PON connects the optical line terminal( OLT ) with multiple optical network units(ONU) through a splitter. The OLT has an arrayof m fixed-tuned transceivers, each tuned to a dif-ferent wavelength. Each ONU is equipped withone fixed transmitter (control channel) and onetunable trans…