Quasi-Dynamic Urban-Location Models with Endogenously Determined Travel Costs

1979 ◽  
Vol 11 (5) ◽  
pp. 575-584 ◽  
Author(s):  
D E Boyce ◽  
F Southworth
Keyword(s):  
Dynamic Model ◽  
Combined Model ◽  
Trip Distribution ◽  
Travel Costs ◽  
Urban Location ◽  
Location Models ◽  
Assignment Model ◽  
Job Location

A quasi-dynamic model of residential and job location is fused with the equilibrium trip-assignment model in the manner suggested by the combined model of trip distribution and assignment. The implications of this combined model for assumptions about future levels of interaction are examined. Extensions of the model to include explicit housing stocks and prices and the determination of residential- and job-location attractiveness are considered.

METHOD FOR ESTIMATING ERRORS IN MEASURING INSTRUMENTS BY THE SPACE CATALOGUE ORBITS

2018 ◽  
pp. 76-84
Author(s):  
K. V. Sorokin ◽  
E. A. Sunarchina
Keyword(s):  
Dynamic Model ◽  
New Method ◽  
Measuring Instruments ◽  
Measuring Instrument ◽  
Software Complex

Improvement of orbits precision is one of the most important tasks of space surveillance catalogue maintenance. The solution of this problem is directly related to an adequate consideration of the errors of the coordinate information from the measuring instruments. The article consideresd a new method for estimating the precision of measuring instruments on the catalog orbits. To carry out such analysis, in PJSC «VIMPEL» special technological program was created. Main results of a study of radar errors with orbits of space surveillance catalogue was presented. Also, the results were compared with data of measuring instrument's calibration software complex. This software complex provides determination of satellite's position with errors less than 10 m. A new dynamic model of measuring instrument errors is proposed.

Direct determination of the concentration dependence of diffusivities using combined model-based Raman and NMR experiments

2009 ◽  
Vol 277 (2) ◽  
pp. 96-106 ◽  
Author(s):  
E. Kriesten ◽  
M.A. Voda ◽  
A. Bardow ◽  
V. Göke ◽  
F. Casanova ◽  
...  
Keyword(s):  
Concentration Dependence ◽  
Direct Determination ◽  
Combined Model ◽  
Model Based

Calibrating Combined Model of Trip Distribution, Modal Split, and Traffic Assignment

1997 ◽  
Vol 1607 (1) ◽  
pp. 1-5 ◽  
Author(s):  
David E. Boyce ◽  
Yu-Fang Zhang
Keyword(s):  
Traffic Assignment ◽  
Calibration Method ◽  
Operational Method ◽  
Combined Model ◽  
Trip Distribution ◽  
Modal Split ◽  
Travel Forecasting

A method for calibrating a combined model of travel choices for the Chicago, Illinois, region is described and illustrated. This model and its simultaneous calibration method seek to ensure that travel choices are represented consistently, thereby offering an operational method for implementing and solving the four-step travel forecasting procedure with feedback.

scholarly journals Investigation of kinematic parameters of two nonconventional piston machines with wobble board

2018 ◽  
Vol 157 ◽  
pp. 02003 ◽  
Author(s):  
Peter Baran ◽  
Pavol Šťastniak ◽  
Pavol Kukuča ◽  
Miloš Brezáni
Keyword(s):  
Dynamic Model ◽  
Main Part ◽  
Engineering Industry ◽  
Force Analysis ◽  
Movement Behaviour ◽  
Kinematic Parameters ◽  
Geometric Conditions ◽  
Piston Stroke ◽  
Basic Movement

Article deals with description of non-conventional mechanism FIK and mechanism with ring, which may be suitable for special applications in the engineering industry. It is possible to use not only classical crank mechanisms, but also non-conventional mechanisms in design of piston machines. Investigation of kinematic parameters of the machines is important step to know its basic movement behaviour, and from this, it is then possible to create the alternate dynamic model or force analysis. For kinematic comparison will be designed the same basic geometric conditions in both types of models. In terms of comparisons will be monitored mainly points on wobble board and the main part will be determination of piston stroke.

scholarly journals Dynamic Impact Factor Determination of an Existing Pre-stressed Concrete I-Girder Bridge Using Vehicle-Bridge Interaction Modelling

2021 ◽  
Vol 10 (3) ◽  
pp. 163-176
Author(s):  
Shuvrodeb Adhikary ◽  
Shohel Rana ◽  
Jerin Tasnim ◽  
Nazrul Islam
Keyword(s):  
Impact Factor ◽  
Dynamic Model ◽  
Superposition Method ◽  
Dynamic Impact ◽  
Mode Superposition Method ◽  
Road Roughness ◽  
Girder Bridge ◽  
Dynamic Impact Factor ◽  
Interaction Problem

The dynamic Impact Factor (IM) of a bridge is influenced by many factors, including Vehicle-Bridge Interaction (VBI), vehicle speed and road roughness. This paper represents the dynamic effects of moving vehicles and the determination of IM of an existing Pre-stressed concrete I-girder bridge utilizing VBI modeling. Evaluation of the IM is expected to provide valuable information for condition assessment and management of the existing bridge. The interaction problem between the vehicle and the bridge includes a dynamic model for the bridge structure subsystem, a dynamic model for the vehicle subsystem, interaction constraints, road roughness modelling and numerical solution techniques for the dynamic systems. The Half-car model is utilized for modelling of the vehicle dynamics and the bridge dynamic model is idealized according to Finite Element Method (FEM). Then FEM along with the mode superposition method are utilized for determining the Equation of Motion (EOM) for the bridge subsystem. D’Alembert’s principle is used for developing EOM for the vehicle subsystem. The interaction between vehicle vibration and bridge vibration is established through the contact forces between the wheels and the bridge by employing the compatibility relationship between the contact points and by applying the static equilibrium condition. Lastly, Newmark’s-β method is used for solving the coupled mathematical model of the vehicle and bridge interaction problem to determine the responses of the two sub-systems. The whole procedure is then performed for different vehicle speeds and various bridge deck surface roughness conditions to determine the dynamic impact on the existing I-girder bridge named Teesta Bridge located in Bangladesh.

scholarly journals VALUASI EKONOMI OBJEK WISATA HUTAN MANGROVE MUNJANG DI DESA KURAU BARAT KABUPATEN BANGKA TENGAH

2020 ◽  
Vol 14 (1) ◽  
pp. 101
Author(s):  
Soleha Soleha ◽  
Yudi Sapta Pranoto ◽  
Evahelda Evahelda
Keyword(s):  
Pearson Correlation ◽  
Economic Value ◽  
Negative Relationship ◽  
Strong Relationship ◽  
Survey Method ◽  
Carbon Dioxide Absorption ◽  
Tourist Attractions ◽  
Travel Costs ◽  
The Cost

This study aims to calculate economic value based on travel costs and environmental services of Mangrove Munjang Forest attractions. This research was conducted in the supporting Mangrove Munjang Forest in Kurau Barat Village, Koba Subdistrict, Central Bangka Regency starting in November 2018 until June 2019. The research method used was the survey method. The sampling method using simple accidental sampling for the determination of 100 respondents obtained using the Rao Purba formula, and the method of analysing travel costs using Pearson Correlation analysis. The results of the study showed that the overall economic value of Mangrove Munjang Forests was Rp28.292.560.968 per year that is the flora value of Rp15.037.827.000, fauna value Rp7.286.730.000, carbon dioxide absorption value is Rp4.261.243.068 and the value of travel cost is Rp1.706.760.900. The correlation between the cost of travel and the number of visits showed a strong relationship namely -,540 with the direction of a negative relationship namely the higher the cost of travel incurred by visitors, the lower the visitor’s desire to travel o tourist attractions and vice versa.

Dynamic Simulation and Test for the Valve Train Dynamics

2011 ◽  
Vol 117-119 ◽  
pp. 15-19 ◽  
Author(s):  
Cai Yun Guan ◽  
You Ming Chen ◽  
Wen Jie Qin
Keyword(s):  
Dynamic Model ◽  
Contact Stiffness ◽  
Quantitative Agreement ◽  
Measured Data ◽  
Valve Train ◽  
Parameter Determination ◽  
Cam Follower ◽  
Train Dynamics ◽  
Simulation Results

This paper presents the development of a dynamic model of the valve train of one engine. During the parameter determination of the model, finite element method is used to calculate the contact stiffness of the cam-follower . The simulation results of the model are compared with measured data of the valve train at same speed. Excellent quantitative agreement is found between the numerical and experimental results and the validity of the dynamic model can be verified.

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