The effect of the nucleus random location on the cellular S-values – Based on Geant4-DNA

2021 ◽  
Vol 168 ◽  
pp. 109427
Author(s):  
N. Chegeni ◽  
E. Kouhkan ◽  
A. Hussain ◽  
M. Hassanvand
Keyword(s):  
Random Location

scholarly journals Covert Communication in MIMO-OFDM System Using Pseudo Random Location of Fake Subcarriers

2016 ◽  
Vol 4 (1) ◽  
pp. 150-163 ◽  
Author(s):  
Rizky Pratama Hudhajanto ◽  
I Gede Puja Astawa ◽  
Amang Sudarsono
Keyword(s):  
Communication Systems ◽  
Orthogonal Frequency Division Multiplexing ◽  
Random Sequence ◽  
Multiple Input Multiple Output ◽  
Ofdm System ◽  
Transmission Scheme ◽  
Sensitive Data ◽  
Input Multiple Output ◽  
Mimo Ofdm ◽  
Random Location

Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) is the most used wireless transmission scheme in the world. However, its security is the interesting problem to discuss if we want to use this scheme to transmit a sensitive data, such as in the military and commercial communication systems. In this paper, we propose a new method to increase the security of MIMO-OFDM system using the change of location of fake subcarrier. The fake subcarriers’ location is generated per packet of data using Pseudo Random sequence generator. The simulation results show that the proposed scheme does not decrease the performance of conventional MIMO-OFDM. The attacker or eavesdropper gets worse Bit Error Rate (BER) than the legal receiver compared to the conventional MIMO-OFDM system.

Perceptual Organization in Multistable Apparent Motion

Perception ◽  
1985 ◽  
Vol 14 (2) ◽  
pp. 135-143 ◽  
Author(s):  
Vilayanur S Ramachandran ◽  
Stuart M Anstis
Keyword(s):  
Motion Perception ◽  
Apparent Motion ◽  
Perceptual Organization ◽  
Necker Cube ◽  
The Other ◽  
Horizontal Oscillation ◽  
Random Location ◽  
Single Figure ◽  
Looking Back

Is motion perception based on a local piecemeal analysis of the image or do ‘global’ effects also play an important role? Use was made of bistable apparent-motion displays in trying to answer this question. Two spots were flashed simultaneously on diagonally opposite corners of a 1 deg wide square and then switched off and replaced by two spots appearing on the other two corners. One can either see vertical or horizontal oscillation and the display is bistable just as a Necker cube is. If several such bistable figures are randomly scattered on the screen and presented simultaneously, then one usually sees the same motion axis in all of them, suggesting the presence of field-like effects for resolving ambiguity in apparent motion. While viewing a single figure observers experience hysteresis: they tend to adhere to one motion axis or the other and can switch the axis only by looking away and looking back after 10–30 s have elapsed. The figure can be switched off and made to reappear at some other random location on the screen and it is then always found to retain its motion axis. Several such demonstrations are presented to show that spatial induction effects in metastable motion displays may provide a particularly valuable probe for studying ‘laws’ of perceptual organization.

scholarly journals An Artificial Bee Colony Algorithm with Random Location Updating

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Lijun Sun ◽  
Tianfei Chen ◽  
Qiuwen Zhang
Keyword(s):  
Information Exchange ◽  
Artificial Bee Colony Algorithm ◽  
Artificial Bee Colony ◽  
Population Diversity ◽  
Selection Strategy ◽  
Initial Population ◽  
Search Range ◽  
Bee Colony ◽  
Random Location ◽  
Location Updating

As a novel swarm intelligence algorithm, artificial bee colony (ABC) algorithm inspired by individual division of labor and information exchange during the process of honey collection has advantage of simple structure, less control parameters, and excellent performance characteristics and can be applied to neural network, parameter optimization, and so on. In order to further improve the exploration ability of ABC, an artificial bee colony algorithm with random location updating (RABC) is proposed in this paper, and the modified search equation takes a random location in swarm as a search center, which can expand the search range of new solution. In addition, the chaos is used to initialize the swarm population, and diversity of initial population is improved. Then, the tournament selection strategy is adopted to maintain the population diversity in the evolutionary process. Through the simulation experiment on a suite of unconstrained benchmark functions, the results show that the proposed algorithm not only has stronger exploration ability but also has better effect on convergence speed and optimization precision, and it can keep good robustness and validity with the increase of dimension.

Random location of fuel treatments in wildland community interfaces: a percolation approach

2004 ◽  
Vol 34 (1) ◽  
pp. 164-173 ◽  
Author(s):  
Michael Bevers ◽  
Philip N Omi ◽  
John Hof
Keyword(s):  
Network Optimization ◽  
Size Fraction ◽  
Landscape Patterns ◽  
Protection Zones ◽  
Spatially Correlated ◽  
Treatment Zone ◽  
Bisection Search ◽  
Random Location ◽  
Landscape Size ◽  
Fully Connected

We explore the use of spatially correlated random treatments to reduce fuels in landscape patterns that appear somewhat natural while forming fully connected fuelbreaks between wildland forests and developed protection zones. From treatment zone maps partitioned into grids of hexagonal forest cells representing potential treatment sites, we selected cells to be treated at random using an algorithm that provides a varying degree of treatment clustering. One thousand or more such maps were used as sample replicates for parameter settings that included landscape size, fraction of area treated, and degree of clustering to test whether continuous fuelbreaks were formed in an acceptable proportion of cases. A shortest path network optimization model was solved for each sample landscape to determine the presence or absence of a continuous fuelbreak and to measure the length of the most direct fuelbreak when one or more were present. By varying the fraction of area treated in a bisection search, we were able to estimate the minimum amount of treatment needed. Results indicated that between 54% and 88% of a forest would need to be treated to form fuelbreaks in 60% or more of the landscapes we modeled.

scholarly journals Connect the dots: how many random points can a regular curve pass through?

2005 ◽  
Vol 37 (03) ◽  
pp. 571-603 ◽  
Author(s):  
Ery Arias-Castro ◽  
David L. Donoho ◽  
Xiaoming Huo ◽  
Craig A. Tovey
Keyword(s):  
Image Processing ◽  
Point Clouds ◽  
Regular Curve ◽  
Smooth Functions ◽  
Higher Dimensional ◽  
Random Location ◽  
Pass Through ◽  
Lipschitz Graphs

Given a class Γ of curves in [0, 1]2, we ask: in a cloud of n uniform random points, how many points can lie on some curve γ ∈ Γ? Classes studied here include curves of length less than or equal to L, Lipschitz graphs, monotone graphs, twice-differentiable curves, and graphs of smooth functions with m-bounded derivatives. We find, for example, that there are twice-differentiable curves containing as many as O P (n 1/3) uniform random points, but not essentially more than this. More generally, we consider point clouds in higher-dimensional cubes [0, 1] d and regular hypersurfaces of specified codimension, finding, for example, that twice-differentiable k-dimensional hypersurfaces in R d may contain as many as O P (n k/(2d-k)) uniform random points. We also consider other notions of ‘incidence’, such as curves passing through given location/direction pairs, and find, for example, that twice-differentiable curves in R 2 may pass through at most O P (n 1/4) uniform random location/direction pairs. Idealized applications in image processing and perceptual psychophysics are described and several open mathematical questions are identified for the attention of the probability community.

Numeric Analysis of Size Effect on Mesol Concrete Random Aggregate Model

2012 ◽  
Vol 226-228 ◽  
pp. 1780-1784
Author(s):  
Xin Yu Liang ◽  
Fa Ning Dang
Keyword(s):  
Size Effect ◽  
Random Number ◽  
Aggregate Size ◽  
Aggregate Model ◽  
Concrete Material ◽  
Strength Change ◽  
Random Aggregate ◽  
Random Aggregate Model ◽  
Random Location ◽  
Effect Ratio

In order to research that statics properties of concrete cylinder sample are influenced by micro-concrete material heterogeneity, by random aggregate models generated by different random number were established. By fixed aggregate size and constantly changing of the sample size, the concrete numerical model was simulated and Strength change of concrete samples was analyzed .So that strength influence of the aggregate location of the concrete random sample was study. Calculation shows that: the strength of concrete has been little effect by the aggregate random location, the size effect on concrete has been changed regularly, with the size effect ratio coefficient of aggregate and sample gradually increasing, the error square sum of strain was reduced and the brittlness of the samples becomes obvious.

Video transcoding to support playback at a random location for scalable video coding

2007 ◽  
Vol 53 (1) ◽  
pp. 227-234 ◽  
Author(s):  
Chun-Su Park ◽  
Tae-Shick Wang ◽  
Jun-Hyung Kim ◽  
Min-Cheol Hwang ◽  
Sung-Jea Ko
Keyword(s):  
Video Coding ◽  
Scalable Video Coding ◽  
Scalable Video ◽  
Video Transcoding ◽  
Random Location

scholarly journals Exposure to unpredictable trips and slips while walking can improve balance recovery responses with minimum predictive gait alterations

2018 ◽  
Author(s):  
Yoshiro Okubo ◽  
Matthew A Brodie ◽  
Daina L Sturnieks ◽  
Cameron Hicks ◽  
Hilary Carter ◽  
...  
Keyword(s):  
Young Adults ◽  
Everyday Life ◽  
Gait Speed ◽  
Random Perturbation ◽  
Step Length ◽  
Centre Of Mass ◽  
Balance Recovery ◽  
Margin Of Stability ◽  
Slowing Down ◽  
Random Location

AbstractINTRODUCTIONThis study aimed to determine if repeated exposure to unpredictable trips and slips while walking can improve balance recovery responses when predictive gait alterations (e.g. slowing down) are minimised.METHODSTen young adults walked on a 10-m walkway that induced slips and trips in fixed and random locations. Participants were exposed to a total of 12 slips, 12 trips and 6 non-perturbed walks in three conditions: 1) right leg fixed location, 2) left leg fixed location and 3) random leg and location. Kinematics during non-perturbed walks and previous and recovery steps were analysed.RESULTSThroughout the three conditions, participants walked with similar gait speed, step length and cadence(p>0.05). Participants’ extrapolated centre of mass (XCoM) was anteriorly shifted immediately before slips at the fixed location (p<0.01), but this predictive gait alteration did not transfer to random perturbation locations. Improved balance recovery from trips in the random location was indicated by increased margin of stability and step length during recovery steps (p<0.05). Changes in balance recovery from slips in the random location was shown by reduced backward XCoM displacement and reduced slip speed during recovery steps (p<0.05).CONCLUSIONSEven in the absence of most predictive gait alterations, balance recovery responses to trips and slips were improved through exposure to repeated unpredictable perturbations. A common predictive gait alteration to lean forward immediately before a slip was not useful when the perturbation location was unpredictable. Training balance recovery with unpredictable perturbations may be beneficial to fall avoidance in everyday life.

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