A bus passenger flow estimation method based on feature point's trajectory clustering

Author(s):  
Yuan
2017 ◽  
Vol 18 (11) ◽  
pp. 3168-3178 ◽  
Author(s):  
Jun Zhang ◽  
Dayong Shen ◽  
Lai Tu ◽  
Fan Zhang ◽  
Chengzhong Xu ◽  
...  

2007 ◽  
Author(s):  
Hong Man ◽  
Robert J. Holt ◽  
Jing Wang ◽  
Rainer Martini ◽  
Ravi Netravali ◽  
...  

2014 ◽  
Vol 54 (3) ◽  
pp. 240-247 ◽  
Author(s):  
Wojnar Sławomir ◽  
Boris Rohal-Ilkiv ◽  
Peter Šimončic ◽  
Marek Honek ◽  
Csambál Jozef

The aim of this paper is to present a simple model of the intake manifold dynamics of a spark ignition (SI) engine and its possible application for estimation and control purposes. We focus on pressure dynamics, which may be regarded as the foundation for estimating future states and for designing model predictive control strategies suitable for maintaining the desired air fuel ratio (AFR). The flow rate measured at the inlet of the intake manifold and the in-cylinder flow estimation are considered as parts of the proposed model. In-cylinder flow estimation is crucial for engine control, where an accurate amount of aspired air forms the basis for computing the manipulated variables. The solutions presented here are based on the mean value engine model (MVEM) approach, using the speed-density method. The proposed in-cylinder flow estimation method is compared to measured values in an experimental setting, while one-step-ahead prediction is illustrated using simulation results.


2016 ◽  
Vol 32 (2) ◽  
pp. 120-136
Author(s):  
Islam Amer

Purpose The purpose of this paper is to study the sensitivity of foreign exchange exposure through the cash flow estimation method using a sample of 59 UK insurance companies. This approach allows a decomposition of exposures into short- and long-term components. By revealing the nature of their cash flow exposures, companies can evaluate the effectiveness of their hedging programmes and focus their hedging efforts according to the nature of their exposures. Design/methodology/approach Martin and Mauer’s (2003, 2005) three-stage model is used to estimate foreign exchange rate transaction exposures for the sample of 65 UK insurance companies over the period 2004-2013. However, this paper has one important innovation to this method. Instead of the model used in previous papers, the paper uses a model from the actuarial field that was proposed by Blum et al. (2001) for modelling foreign exchange rates with their relevant constituents (inflation and interest rate). Findings The evidence shows that the currency transaction exposure for non-life insurers is greater than that of life insurers. Moreover, the author finds that large insurers exhibit lower frequencies of foreign exchange transaction exposure than small insurers. Originality/value The value of this paper comes from the fact that revealing the nature of cash flow exposures, companies can evaluate the effectiveness of their hedging programmes and focus their hedging efforts according to the nature of their exposures.


Author(s):  
Wahyu Supriyatin ◽  
Winda Widya Ariestya ◽  
Ida Astuti

Tracking and object is one of the utilizations on the field of the computer vision application. Object tracking utilization as a computer vision in this study is used to identify objects which exist within a frame and calculate the number of objects passing within a frame. The utilization of computer vision in various fields of application can be used to solve the existing problems. The method used in object tracking is by comparison between optical flow estimation method with background method. The test is conducted by using a still camera for both methods by making changes to the parameter values used as a reference. The results of the tests, conducted on the three video objects by comparing the two methods show a Total Recorded Time better than those of the background estimation method, being smaller than 100 seconds. Testing both methods successfully identifies the object tracking and calculates the number of passing cars.


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