Modeling Stability in On-line Signatures

2014 ◽  
Vol 24 ◽  
pp. 37-46 ◽  
Author(s):  
Antonio Parziale ◽  
Salvatore G. Fuschetto ◽  
Angelo Marcelli
Keyword(s):  
Motor Control ◽  
Experimental Results ◽  
New Method ◽  
Signature Verification ◽  
Stability Regions ◽  
Proposed Model ◽  
On Line ◽  
The Stability ◽  
Definition Of ◽  
Handwriting Generation

A novel definition of stability regions and a new method for detecting them from on-line signatures is introduced in this paper. Building upon handwriting generation and motor control studies, the stability regions is defined as the longest similar sequences of strokes between a pair of genuine signatures. The stability regions are then used to select the most stable signatures, as well as to estimate the extent to which these stability regions are encountered in both genuine and simulated (forged) signatures, thus modeling the signing habit of a subject. Experimental results on the SUSig database show that the proposed model can be effectively used for signature verification. Purchase Article for $10 

scholarly journals A Brand-New Method of Quantifying Lease Incremental Borrowing Rate under IFRS 16 and Topic 842

2021 ◽  
Vol 16 (11) ◽  
pp. 92
Author(s):  
Francesco Bellandi
Keyword(s):  
Interest Rates ◽  
Average Rate ◽  
Cash Flows ◽  
New Method ◽  
Practical Application ◽  
Conceptual Approach ◽  
Proposed Model ◽  
Definition Of ◽  
Finance Theory ◽  
A Company

One of the most contentious issues of lessee’s accounting under IFRS 16 and FASB ASC Topic 842 has been how to compute a lessee’s incremental borrowing rate (hereafter, IBR). A proper quantification of IBR is important because it affects the amount of a lessee’s right-of-use asset and lease liability recognized at lease commencement in the statement of financial position, as well as depreciation and interest expenses ongoing. Such a determination poses theoretical and practical difficulties to companies. This article develops a brand-new method that follows a conceptual approach that converge accounting and finance theory, to strike a balance between rigorous theory and practical application for companies. The proposed approach starts with a lessee’s actual average borrowing rate and compares it with its theoretical average borrowing rate based on synthetic rating. It then flexes the average rate along the interest term curve and derives the monthly rates applicable to each monthly cash flow. It adjusts the rates based on each specific lease features as defined in the standards, periodically updates the specific lease interest rate curves, and computes a lease IBR as the internal rate of return of the cash flows discounted at the monthly specific rates applicable to that specific lease. It finally compares with benchmarks. The proposed model is innovative because it is framed within, and consistent with, the definition of incremental borrowing rate in those accounting pronouncements, uses three starting references cross-checking each other, includes both an internal perspective of a company’s actual interest rates and an external market perspective, and is relatively easy to model in a partially automated spreadsheet application.

scholarly journals Opinion Relation Co-Extraction Based on Partially-Supervised Topical Relations Word Alignment Model

2020 ◽  
Vol 8 (6) ◽  
pp. 135-142
Keyword(s):  
Experimental Results ◽  
Word Alignment ◽  
Ranking Algorithm ◽  
Fine Grained ◽  
Opinion Extraction ◽  
Proposed Model ◽  
On Line ◽  
Alignment Model ◽  
Associated Variable

The most critical tools for fine-grained opinion extraction are opinion goals and opinion terms extracted from on-line comments. The key part of this process is to identify the connection between terms. To do this, the Word Alignment Model (WAM) was introduced in which the associated variable can be identified by word alignment by an opinion goal. Nevertheless, its ability to extract opinion words was less successful. In order to determine opinion connections as a process of alignment, the partially supervised Word Alienation Model (PSWAM) has therefore been created. Then a visual co-ranking algorithm was implemented together with the Opinion Relationship Map, to model all the candidates and to measure the confidence of each voter by defining their opinion. In addition, higher-confidence candidates were extracted as opinions or opinions. This method, though, involves an added kind of interaction with terms such as topical connections in graphic thought. Therefore the current relationship is assumed in this report in order to model the applicants and derive the feelings, views and opinions. The efficiency of co-extracting thoughts, viewpoints and issues is enhanced effectively by using this method. The experimental results further indicate that compared to the existing paradigm, the efficiency of the proposed model.

scholarly journals A New Method for Parameter Sensitivity Analysis of Lorenz Equations

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Mehmet Ali Akinlar
Keyword(s):  
Sensitivity Analysis ◽  
Confidence Intervals ◽  
Parameter Sensitivity ◽  
Experimental Results ◽  
New Method ◽  
Phase Portraits ◽  
Lorenz Equations ◽  
Parameter Sensitivity Analysis ◽  
Sensitivity Equations ◽  
The Stability

A new method for parameter sensitivity analysis of Lorenz equations is presented. The sensitivity equations are derived based on the staggered methods. Experimental results indicate that it is possible to determine effects of parameters on model variables so that we can eliminate the less effective ones. Robustness can also be verified in some confidence intervals by simply looking at the corresponding phase portraits. This enables us to control the system. Although the stability properties of the Lorenz equations are studied extensively, to the best knowledge of the authors, the PSA of Lorenz equations has not been considered which is the main goal of this paper.

QUATERNION M SET WITH NONE ZERO CRITICAL POINTS

Fractals ◽  
2009 ◽  
Vol 17 (04) ◽  
pp. 427-439 ◽  
Author(s):  
YUAN-YUAN SUN ◽  
XING-YUAN WANG
Keyword(s):  
Critical Point ◽  
Critical Points ◽  
Julia Sets ◽  
Experimental Results ◽  
Stability Regions ◽  
Mandelbrot Sets ◽  
Efficient Information ◽  
The Stability ◽  
Detecting Method

The quaternion Mandelbrot sets (abbreviated as M sets) on the mapping f : z ← z2+ c with multiple critical points are constructed utilizing the cycle detecting method and the improved time escape algorithm. The topology structures and the fission evolutions of M sets are investigated, the boundaries and the centers of the stability regions are calculated, and the topology rules of the cycle orbits are discussed. The quaternion Julia sets with the parameter c selected from the M sets are constructed. It can be concluded that quaternion M sets have efficient information of the corresponding Julia sets. Experimental results demonstrate that the quaternion M sets with multiple critical points distinguish from that of zero critical point and the collection of the quaternion M sets with different critical points constitute the complete M sets on the mapping f : z ← z2+ c.

New method for the on-line signature verification based on horizontal partitioning

2014 ◽  
Vol 47 (8) ◽  
pp. 2652-2661 ◽  
Author(s):  
Krzysztof Cpałka ◽  
Marcin Zalasiński ◽  
Leszek Rutkowski
Keyword(s):  
New Method ◽  
Signature Verification ◽  
On Line ◽  
Horizontal Partitioning

GENERALIZED MANDELBROT SETS FOR MEROMORPHIC COMPLEX AND QUATERNIONIC MAPS

2002 ◽  
Vol 12 (08) ◽  
pp. 1755-1777 ◽  
Author(s):  
WALTER BUCHANAN ◽  
JAGANNATHAN GOMATAM ◽  
BONNIE STEVES
Keyword(s):  
Parameter Space ◽  
Three Dimensional ◽  
Mandelbrot Set ◽  
Rational Maps ◽  
Fractal Structures ◽  
Stability Regions ◽  
Theoretical Support ◽  
The Stability ◽  
Definition Of ◽  
Meromorphic Maps

The concepts of the Mandelbrot set and the definition of the stability regions of cycles for rational maps require careful investigation. The standard definition of the Mandelbrot set for the map f : z → z2+ c (the set of c values for which the iteration of the critical point at 0 remains bounded) is inappropriate for meromorphic maps such as the inverse square map. The notion of cycle sets, introduced by Brooks and Matelski [1978] for the quadratic map and applied to meromorphic maps by Yin [1994], facilitates a precise definition of the Mandelbrot parameter space for these maps. Close scrutiny of the cycle sets of these maps reveals generic fractal structures, echoing many of the features of the Mandelbrot set. Computer representations confirm these features and allow the dynamical comparison with the Mandelbrot set. In the parameter space, a purely algebraic result locates the stability regions of the cycles as the zeros of characteristic polynomials. These maps are generalized to quaternions. The powerful theoretical support that exists for complex maps is not generally available for quaternions. However, it is possible to construct and analyze cycle sets for a class of quaternionic rational maps (QRM). Three-dimensional sections of the cycle sets of QRM are nontrivial extensions of the cycle sets of complex maps, while sharing many of their features.

Postmodern More

Moreana ◽  
2003 ◽  
Vol 40 (Number 153- (1-2) ◽  
pp. 219-239
Author(s):  
Anne Lake Prescott
Keyword(s):  
Human Language ◽  
Thomas More ◽  
The Stability ◽  
Definition Of ◽  
Recent Critic

Thomas More is often called a “humanist,” and rightly so if the word has its usual meaning in scholarship on the Renaissance. “Humanist” has by now acquired so many different and contradictory meanings, however, that it needs to be applied carefully to the likes of More. Many postmodernists tend to use the word, pejoratively, to mean someone who believes in an autonomous self, the stability of words, reason, and the possibility of determinable meanings. Without quite arguing that More was a postmodernist avant la lettre, this essay suggests that he was not a “humanist” who stalks the pages of much recent postmodernist theory and that in fact even while remaining a devout Catholic and sensible lawyer he was quite as aware as any recent critic of the slipperiness of human selves and human language. It is time that literary critics tightened up their definition of “humanist,” especially when writing about the Renaissance.

A Modified Dugoff Tire Model for Combined-slip Forces

2010 ◽  
Vol 38 (3) ◽  
pp. 228-244 ◽  
Author(s):  
Nenggen Ding ◽  
Saied Taheri
Keyword(s):  
Vehicle Dynamics ◽  
Tire Model ◽  
Magic Formula ◽  
Model Based ◽  
Proposed Model ◽  
Road Friction ◽  
On Line ◽  
Double Lane Change ◽  
Tire Forces ◽  
Tire Models

Abstract Easy-to-use tire models for vehicle dynamics have been persistently studied for such applications as control design and model-based on-line estimation. This paper proposes a modified combined-slip tire model based on Dugoff tire. The proposed model takes emphasis on less time consumption for calculation and uses a minimum set of parameters to express tire forces. Modification of Dugoff tire model is made on two aspects: one is taking different tire/road friction coefficients for different magnitudes of slip and the other is employing the concept of friction ellipse. The proposed model is evaluated by comparison with the LuGre tire model. Although there are some discrepancies between the two models, the proposed combined-slip model is generally acceptable due to its simplicity and easiness to use. Extracting parameters from the coefficients of a Magic Formula tire model based on measured tire data, the proposed model is further evaluated by conducting a double lane change maneuver, and simulation results show that the trajectory using the proposed tire model is closer to that using the Magic Formula tire model than Dugoff tire model.

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