... from the bottom to the top of the tree crown Like in the PAR domain, the variability of the transmittance was more marked at the top and the bottom than in middle part of the tree crown The difference ... section of the tree crown The zero position represents the trunk position Trang 7Figure 2 Vertical variation of the mean andstandard deviation of reflectance and trans-mittance of a leaf in PAR and ... between 0.4 and 0.6 for both the vertical and hor-izontal profiles (figures 5a and 5b) Measured Φcin shaded areas were highest at the top of the canopy (figure 5a) and at the periphery of the tree
Ngày tải lên: 08/08/2014, 14:22
... generated to push the HIP back to the closest face of the object, along the normal of the chosen face The magnitude of the force is proportional to the penetration depth and the stiffness of the material, ... include the concept of virtual reality (VR) and computer haptics; the surface-based and volume-based modeling approach of virtual objects; haptic rendering methods; and the current state of VR and ... drilling and screwing of micro-implants; and (iii) stop in time when further screwing might cause the stripping of the implants To achieve these goals, the haptics-based geometry and force modeling
Ngày tải lên: 09/09/2015, 10:07
Variational methods for modeling and simulation of tool tissue interaction
... geometry, and the shape of the surgical tool interacting with the organ are factors that affect the modeling realism of medical simulation. Nonlinear mechanical property is an important attribute of the ... forces and deformations for the simulation of biological soft tissues with the aim of developing a simulation tool for the planning of cryogenic surgical treatment of liver ... in soft tissue deformation modeling Realistic and efficient modeling and animation of skin for both humans and. .. potential of the model for complex structure modeling The
Ngày tải lên: 09/09/2015, 11:30
Modeling and simulation of buckling of pristine and defective carbon nanotubes
... of different configurations of vacancy defects, such as the number of missing atoms and the shape of defects, on the buckling properties of SWNTs and DWNTs are studied The cumulative effect of ... properties of CNTs Hence, it is important to know the effect of defects on the buckling properties of CNTs The third part of this thesis presents the investigation on the buckling properties of defective ... calculate the Young’s modulus of the matrix with the help of experimentally observed stress values From this, they predicted that the functionalization could weaken the interaction between CNT and the
Ngày tải lên: 09/09/2015, 18:54
Modeling and optimization of the forward osmosis process parameters selection, flux prediction and process applications
... on theoretical modeling and prediction of FO performance, lack of an ideal FO draw solution, limited data to evaluate the feasibility of FO applications, and lack of comprehensive analysis of ... energy and cost comparison with existing technologies It is the objective of this thesis to investigate these challenges and systematically evaluate the feasibility of the FO process in water and ... improve the accuracy of the ICP effect because of the different degree of interactions of the different solutes with the porous matrix membrane material Following work done on FO process modeling,
Ngày tải lên: 10/09/2015, 15:48
Modeling and simulation of cell adhesion and detachment
... of vesicle adhesion mediated by the diffusion of the receptors and the binding of the receptor-ligand pairs 35 Figure 3.3 Variation of receptor density caused by diffusion of the ... MODELING AND SIMULATION OF CELL ADHESION AND DETACHMENT SUN LU NATIONAL UNIVERSITY OF SINGAPORE 2011 MODELING AND SIMULATION OF CELL ADHESION AND DETACHMENT SUN LU ... (about 40% of the membrane) and protein... to the next ones, rendering a cascade of failure So the final lifetime of the cluster is an accumulation of the rupture time of each bond
Ngày tải lên: 10/09/2015, 15:48
Modeling and simulation of electron transport through nanoscale heterojunctions
... 29The parameter 1 and 2 are the shorthand notation for time and momentum dinates, 1=[k1,t1] etc., and the subscript c stands for integral around the contourcoor-in Fig.(2.1) and of course the ... properties of the system The time evolution of the distribution function is often called the collision term (∂f /∂t)coll, is the central kernel in solving theBoltzmann equation and a wealth of literatures ... when the trans-port is theoretically linear The phenomenon is caused by the potential symmetrywhich affects the pinning mechanisms of the localized level by the superconduct-ing gaps of the leads
Ngày tải lên: 10/09/2015, 15:48
Modeling and simulation of antisolvent crystallization mixing and control
... addition, the development of the crystallization process for a given API includes the design of control strategies to ensure the crystal product meets the demands of the drug administration method and ... distribution on the mixing speed, addition mode, and scale for a stirred vessel, and the effects of jet vii Modeling and Simulation of Antisolvent Crystallization: Mixing and Control velocity on the ... understanding of the crystallization process of different.. .Modeling and Simulation of Antisolvent Crystallization: Mixing and Control theoretical development and analysis of
Ngày tải lên: 14/09/2015, 09:18
Computer modeling and simulation of ultra high density perpendicular recording processes
... of this write head of shielded-pole type, the slanted write fields due to the side shields, shielded pole at the trailing edge and the leading edge of the main pole tip and the influence of the ... thermally activated magnetization reversal in the framework of the micromagnetic concept;[25] (ii) how to expand the theory to new techniques for the calculation of demagnetizing fields for simulation ... on the characteristics of write field versus structural parameters In the sensitivity analysis, the dependence of the write field intensity, the field gradient and the 50% pulse width on the
Ngày tải lên: 15/09/2015, 17:10
Modeling and simulation of an active robotic device for flexible needle insertion
... needle known as the active needle, is proposed to improvethe accuracy of needle insertion during surgery This study focuses on the modelingand simulation of the active needle By modeling the needle ... effects of deflection, dislocation, and deformation of the organ observed in contemporary practice Trang 29The liver cancer is one of the most common cancers in the world, and also one ofthe deadliest ... sizesince the actuating system of the mechanism is set on the first link of the needle.However, kinematic analysis of the system becomes complex This research alsoinvestigates path planning and simulation
Ngày tải lên: 16/10/2015, 15:38
Multi agent based modeling and simulation of metabolic networks
... such kind of modeling and simulation tools is substantially important The focus of modeling in cell physiology has always been on the understanding of metabolic systems in the sense of the general ... that make up the system, and execution consists of emulating these behaviors On the other hand, in EBM, the model is a set of equations, and execution consists of evaluating them There are two ... mathematical modeling of metabolic networks dates back to the mid 1960s The study of the genetic control and dynamic simulations of simple metabolic loops emerged with the availability of computers and
Ngày tải lên: 26/11/2015, 13:02
Modeling and simulation of a hybrid electric vehicle using MATLAB/Simulink and ADAMS
... supplied to the battery and the motor, which subsequently drives the wheels The parallel hybrid, on the other hand, switches between the two power sources, i.e., the fuel converter and the electric ... state of charge of the battery must be specified at the start of the simulation Several important assumptions were made to simplify the modeling of the battery First, it was assumed that the no-load ... Figure 2-8 illustrates the vehicle layout of the Civic Hybrid vehicle The powertrain which includes the engine, motor, and the transmission, is placed in the front of the vehicle The Intelligent Power
Ngày tải lên: 27/01/2016, 13:02
Modeling and simulation of a downdraft biomass gasifier 1. Model development and validation
... as the sum of resistances due to granular bed, insulation and the outer surface of the reactor (cf Eq (8)) In the preheating zone, there is an additional resistance due to the annular jacket The ... describing the volatile composition and char yield during slow pyrolysis of the biomass, the present work follows the approach of Sharma et al [20], where the thermal degradation of biomass constituents ... between the solid and gases is much faster than the mass transfer Thus, mass transfer determines the rate of moisture removal from the biomass particles to the gases/air flowing around them The analytical
Ngày tải lên: 02/08/2016, 09:35
modeling and simulation of the capacitive acceleration sensor
... force from the mechanical spring and the dam ping force from the viscous damping The equation o f motion of the p ro o f m ass can be w ritten as: Modeling and simulation o f the capacitive accelerometer ... the proof mass and the amplitude o f applied Vibration Modeling and simulation o f the capacitive accelerometer 19 Chapter Sim ilar to the analysis for the frequency response, we can obtain the ... principles of openloop and force-balance accelerometers In addition, results of position measurement and noise analysis of the capacitive accelerometer are given Chapter focuses on modeling and simulation...
Ngày tải lên: 25/03/2015, 11:44
Modeling and Simulation of Microbial Depolymerization Processes of Xenobiotic Polymers
... the class of (M − L)-molecules, respectively The first term of the right-hand side of Eq (12.1) is the total weight loss in the class of M -molecules due to the direct consumption and the β -oxidation, ... -oxidation, and the second term represents the weight conversion from the class of (M + L)-molecules to the class of M molecules due to the β -oxidation 285 286 12 Modeling and Simulation of Microbial ... is, the total weight of (M + L)-molecules present at time t The functions ρ(M ) and β(M ) represent the direct consumption rate and the weight conversion rate from the class of M-molecules to the...
Ngày tải lên: 25/10/2013, 08:20
Case Study in Financial Modeling and Simulation of a Forestry Investment potx
... Solving the Model 11 Solving the Model 12 Solving the Model Define and predict the long term benefits 13 Solving the Model Define and predict the long term benefits Asses the risks 14 Solving the ... the Model Define and predict the long term benefits Asses the risks Estimate the cash flows 15 Solving the Model Define and predict the long term benefits Asses the risks Estimate the cash flows ... flora gathering, recreation, land renewal Required rate of return Forest Yield Factors Wood growth is measured by the MAI: Mean Annual Increment; the annual increase in cubic meters of harvestable...
Ngày tải lên: 23/03/2014, 04:20
modeling and simulation of systems using matlab and simulink
... studies in the area of modeling and simulation This book aims to • Provide a basic understanding of systems and their modeling and simulation • Explain the step-by-step procedure for modeling using ... to the objectives of the study In this case of study of a banking system, possible state variables are the number of busy tellers, the number of customers in the bank, and the line of arrival of ... modeling and simulation methodologies, and software engineering at the postgraduate (MTech) level and guided me during my MTech and PhD in the area of modeling and simulation He is the fountain...
Ngày tải lên: 01/04/2014, 10:55
an introduction to network modeling and simulation for the practicing engineer
... About the Authors xi Introduction 1.1 Advantages and Disadvantages of Modeling and Simulation 1.2 Comparison of “Homebrew” Models and Simulation Tools 1.3 Common Pitfalls of Modeling and Simulation ... multitude of tools with a variety of capabilities and pitfalls Furthermore, there is often a poor understanding of the proper role and application of M&S and how it should fit within the overall ... protocol and of the higher layers (e.g., IP routing) This will impact the performance of the MAC layer protocol and of the higher layers (e.g., IP routing) This will impact the performance of the...
Ngày tải lên: 02/04/2014, 15:49
Báo cáo hóa học: " Research Article A Framework for System-Level Modeling and Simulation of Embedded Systems Architectures" ppt
... processes and channels in the application model and the virtual processors and buffers in the mapping layer The only difference is that the buffers in the mapping layer are limited in size, and their ... maximum processing time in the system, total power consumption of the system, and the cost of the architecture This section aims at giving an overview of the formulation of the mapping problem which ... varied the number of processors from one to four, the type of processors from MicroBlaze to PowerPC, and the mappings of the six application processes onto these different instances of the platform...
Ngày tải lên: 22/06/2014, 19:20