An Expanded Model for the Application of Parametric Statistics

1976 ◽  
Vol 39 (1) ◽  
pp. 311-318
Author(s):  
Jack Hand ◽  
Robert E. McCarter
Keyword(s):  
Current Model ◽  
Classical Model ◽  
Proposed Model ◽  
Parametric Statistics

The current model for the application of parametric statistics involves only the population sampled, and probability statements refer to proportions of samples or proportions of decisions based upon samples. Most statistical textbooks, however, contain concepts that go beyond the explicitly proposed model. The rudiments of an appropriate, expanded model are presented. It is suggested that the expanded model is more adequate, general, and realistic than the classical model.

scholarly journals Health and Risk Behaviors of Bystanders: An Integrative Theoretical Model of Bystanders’ Reactions to Mistreatment

2021 ◽  
Vol 18 (11) ◽  
pp. 5552
Author(s):  
Yariv Itzkovich ◽  
Ella Barhon ◽  
Rachel Lev-Wiesel
Keyword(s):  
Theoretical Model ◽  
Health Risk ◽  
Risk Behaviors ◽  
Moral Disengagement ◽  
Current Model ◽  
Health Risk Behaviors ◽  
Conservation Of Resources ◽  
Cognitive Reactions ◽  
Proposed Model ◽  
New Applications

This article constructs a comprehensive theoretical model that outlines bystanders’ emotional and behavioral responses to the mistreatment of adolescent peers. The model captures bystanders’ risk and health risk behaviors, which have been overlooked in the context of their reactions; when addressed at all in connection with bystanders of bullying among adolescents, they have been treated separately. Here, we present bystanders’ emotional and cognitive reactions and their impact on bystanders’ responses including a set of responses that demonstrate risk and health risk behaviors that are directed to the bystander as a victim by proxy. The theoretical framework is the conservation of resources theory, which posits that personal resources (i.e., potency and moral disengagement) and social resources impact the process that leads to bystanders’ reactions. Previous models have overlooked the integrative viewpoint of bystanders, and comprehensive models that explain bystanders’ behavioral and emotional responses have received little attention especially with regards to adolescents. Two recent models overlooked core features embedded in the current model, including the risk and health risk behaviors that it integrates. The proposed model presents a novel and more comprehensive view of bystanders’ reactions and the process underlying these reactions. It integrates existing knowledge embedded in other existing models. At the same time, this perspective indicates the centricity of potency as a key resource that dictates the emotional response and behaviors of bystanders. This potentially allows for new applications in the mitigation of adverse impacts that follow the witnessing of mistreatment. The article discusses these applications, which are based on previous findings, their implications for practice, and directions for future empirical research necessary to validate the model.

scholarly journals A Digital Signature Model Using XAdES Standard as a Rest Service

Information ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 289
Author(s):  
Renato Carauta Ribeiro ◽  
Murilo Góes de Almeida ◽  
Edna Dias Canedo
Keyword(s):  
Public Administration ◽  
Digital Signature ◽  
Current System ◽  
Current Model ◽  
Ministry Of Education ◽  
Java Language ◽  
Digital Format ◽  
Rest Service ◽  
Proposed Model ◽  
Guidelines And Standards

The digital signature of documents and degrees is a topic widely discussed in the Federal Public Administration. Several laws and ordinances were created to standardize the issuance, validation and legal validity of digitally signed documents in national territory, such as the ordinances created by the Ministry of Education (MEC) to regulate the issuance of degrees in digital format. These ordinances created guidelines and standards that must be adopted by Federal Universities for the signing of in digital format. The main objective of this work is to study these ordinances, the main technologies and digital signature standards used in the literature to create a digital signature system model for University of Brasília-UnB, which complies with the MEC and ICP-Brazil standards. Moreover, the model must be developed with the main standards and technologies in the market, cohesive to the current UnB architecture, easy to maintain and update to new standards that may emerge, and also be a fully open source project. An architectural model and a prototype in Java language were developed using XAdES4j library as a microservice intermediated by the bus used in UnB. The prototype developed was compared with the current digital signature system named C3Web. The comparative tests and results between the two solutions showed that the current system used in UnB does not perform the signature in accordance with the standard proposed by the MEC, in addition to being a private system using proprietary technologies for the execution of digital signatures. The tests performed with the proposed model demonstrated that it performs the digital signature in accordance with the XAdES-T standard, regulations of the MEC and ICP-Brazil. In addition, the solution presented a performance comparable to the current system used by UnB with a little more effective security than the current system used. The current model developed in this work can be a basis for the creation of future subscription systems for Brazilian Universities.

The implementation of sustainable development principles in order to optimize the system of competitiveness of tourist destinations

2016 ◽  
Vol 10 (2) ◽  
pp. 87-100
Author(s):  
Татьяна Рассохина ◽  
Tatyana Rassokhina ◽  
Константин Лебедев ◽  
Konstantin Lebedev
Keyword(s):  
Sustainable Development ◽  
Local Community ◽  
Classical Model ◽  
Graphical Analysis ◽  
Tourist Destination ◽  
The Sustainable Development ◽  
Opposite Case ◽  
Tourist Destinations ◽  
Proposed Model ◽  
Destination Competitiveness

The article is devoted to the development of a model of tourist destination competitiveness based on the principles of sustainable development. It is shown that insufficient attention to solving economic, social and environmental problems through mechanisms of global concept of sustainable development is one of the main factors constraining the growth of competitiveness. The authors prove the following. When creating tourist destinations of different scales, environment for the local community is formed, which should be comfortable and for tourists. In the opposite case, tourist destinations will experience a crisis in its development. The authorial model of ensuring the tourist destination competitiveness, developed on the basis of classical model of M. Porter and G. Dunning. The role of the local community as one of the factors of competitiveness is proved. The analysis of the sustainable development criteria according to UNWTO regarding the creation of conditions for the local community development is conducted, the basic conditions are identified. The authors have conducted an expert survey in destinations of Kaluga region and Tatarstan. On its base the graphical analysis of realization sustainable development criteria concerning creation of conditions for local community activation as the competitive strength of the tourist destination is represented. The main typical problems are identified. Based on it three types of competiveness strategies in the context of sustainable development are specified. The authors have conducted the analysis of indicators of social and tourism development of the Russian regions and have distinguished 10 regions most in need of the implementation of the proposed model. This article provides recommendations for increasing of competitive advantage and sustainable development of tourist destinations.

Some useful preservation theorems

1983 ◽  
Vol 48 (2) ◽  
pp. 427-440 ◽  
Author(s):  
Kevin J. Compton
Keyword(s):  
Current Model ◽  
Classical Model ◽  
Analytical Techniques ◽  
Order Logic ◽  
First Order Logic ◽  
Central Position ◽  
Combinatorial Structures ◽  
Asymptotic Growth ◽  
First Order ◽  
Preservation Theorems

The study of preservation theorems for first order logic was the focus of much research by model theorists in the 1960's. These theorems, which came to form the foundation for classical model theory, characterize first order sentences and theories that are preserved under operations such as the taking of unions or submodels (see Chang and Keisler [5] for a discussion of preservation theorems for first order logic). In current model theoretic research, logics richer than first order logic and applications of logic to other parts of mathematics have assumed the central position. In the former area, preservation theorems are not so important; in the latter, especially in applications to algebra, many of the techniques developed for proving these theorems have been useful.In this paper I prove several preservation theorems for first order logic which I discovered while investigating the asymptotic growth of classes of finite combinatorial structures. The significance of these theorems lies in their applications to problems in finite combinatorics. Since the applications require combinatorial and analytical techniques that are not pertinent to logical questions discussed here, I shall present them in another paper [7].

scholarly journals A Linear Programming Model with Fuzzy Arc for Route Optimization in the Urban Road Network

2019 ◽  
Vol 11 (23) ◽  
pp. 6665
Author(s):  
Escobar-Gómez ◽  
Camas-Anzueto ◽  
Velázquez-Trujillo ◽  
Hernández-de-León ◽  
Grajales-Coutiño ◽  
...  
Keyword(s):  
Linear Programming ◽  
Road Network ◽  
Classical Model ◽  
Route Optimization ◽  
Distribution Area ◽  
Travel Times ◽  
Urban Road Network ◽  
Real Network ◽  
Urban Road ◽  
Proposed Model

In the transport system, it is necessary to optimize routes to ensure that the distance, the amount of fuel used, and travel times are minimized. A classical problem in network optimization is the shortest path problem (SPP), which is used widely in many optimization problems. However, the uncertainty that exists regarding real network problems makes it difficult to determine the exact arc lengths. In this study, we analyzed the problem of route optimization when delivering urban road network products while using fuzzy logic to include factors which are difficult to consider in classical models (e.g., traffic). Our approach consisted of two phases. In the first phase, we calculated a fuzzy coefficient to consider the uncertainty, and in the second phase, we used fuzzy linear programming to compute the optimal route. This approach was applied to a real network problem (a portion of the distribution area of a delivery company in the city of Tuxtla Gutierrez, Chiapas, Mexico) by comparing the travel times between the proposed model and a classical model. The proposed model was shown to predict travel time better than the classical model in this study, reducing the mean absolute percentage error (MAPE) by 25.60%.

Analysis of COVID-19 Fractional Model Pertaining to the Atangana-Baleanu-Caputo Fractional Derivatives

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Roman Ullah ◽  
Muhammad Waseem ◽  
Norhayati Binti Rosli ◽  
Jeevan Kafle
Keyword(s):  
Fractional Derivatives ◽  
Classical Model ◽  
Real Data ◽  
Extended Model ◽  
Model Approximation ◽  
Caputo Fractional Derivatives ◽  
Proposed Model ◽  
Uniqueness Of The Solution ◽  
Ulam Type Stability ◽  
Better Than

The transmission dynamics of a COVID-19 pandemic model with vertical transmission is extended to nonsingular kernel type of fractional differentiation. To study the model, Atangana-Baleanu fractional operator in Caputo sense with nonsingular and nonlocal kernels is used. By using the Picard-Lindel method, the existence and uniqueness of the solution are investigated. The Hyers-Ulam type stability of the extended model is discussed. Finally, numerical simulations are performed based on real data of COVID-19 in Indonesia to show the plots of the impacts of the fractional order derivative with the expectation that the proposed model approximation will be better than that of the established classical model.

An adjustable parameter model for tracking a manoeuvring target

2003 ◽  
Vol 217 (4) ◽  
pp. 275-284 ◽  
Author(s):  
H-M Sun ◽  
T-L Lin
Keyword(s):  
Current Model ◽  
Adjustable Parameter ◽  
Statistical Characteristics ◽  
Interacting Multiple Model ◽  
Multiple Model ◽  
Model Concept ◽  
Online Processing ◽  
Proposed Model ◽  
Adaptive Ability ◽  
A Current

An adjustable parameter model for tracking manoeuvring targets is presented using a modified variable variance intensity technique. This model is based on the Singer model but with modifications to its fixed manoeuvre statistical characteristics. Meanwhile, a ‘current model’ concept is adapted to describe the statistical distribution of the target's acceleration. Since the variance intensity of the proposed model is calculated using a variable manoeuvring probability density function with adequate covariance, it exhibits a strong adaptive ability for tracking a manoeuvring target and a reduced steady estimation bias in tracking a non-manoeuvring target. Computer simulation results show that a Kalman estimator based on this model can track both manoeuvring and non-manoeuvring targets with greater accuracy than either the Singer model or the interacting multiple model method and is suitable for online processing.

scholarly journals A Modified Deterministic Model for Reverse Supply Chain in Manufacturing

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
R. N. Mahapatra ◽  
B. B. Biswal ◽  
P. K. Parida
Keyword(s):  
Deterministic Model ◽  
New Technology ◽  
Current Model ◽  
Optimum Level ◽  
Reverse Supply Chain ◽  
Fixed Rate ◽  
Proposed Model ◽  
Manufactured Products ◽  
The Relationship ◽  
Novel Model

Technology is becoming pervasive across all facets of our lives today. Technology innovation leading to development of new products and enhancement of features in existing products is happening at a faster pace than ever. It is becoming difficult for the customers to keep up with the deluge of new technology. This trend has resulted in gross increase in use of new materials and decreased customers' interest in relatively older products. This paper deals with a novel model in which the stationary demand is fulfilled by remanufactured products along with newly manufactured products. The current model is based on the assumption that the returned items from the customers can be remanufactured at a fixed rate. The remanufactured products are assumed to be as good as the new ones in terms of features, quality, and worth. A methodology is used for the calculation of optimum level for the newly manufactured items and the optimum level of the remanufactured products simultaneously. The model is formulated depending on the relationship between different parameters. An interpretive-modelling-based approach has been employed to model the reverse logistics variables typically found in supply chains (SCs). For simplicity of calculation a deterministic approach is implemented for the proposed model.

Ring currents, local anisotropy, and the problem of the out-of-plane protons: a reinvestigation of the nuclear magnetic resonance spectrum of [10]-paracyclophane

1977 ◽  
Vol 55 (13) ◽  
pp. 2575-2581 ◽  
Author(s):  
Arvind Agarwal ◽  
John A. Barnes ◽  
John L. Fletcher ◽  
Michael J. McGlinchey ◽  
Brian G. Sayer
Keyword(s):  
Ring Current ◽  
Chemical Shifts ◽  
Current Model ◽  
Classical Model ◽  
Local Anisotropy ◽  
Nmr Spectrum ◽  
H Nmr ◽  
Out Of Plane ◽  
Mechanical Approach ◽  
Quantum Mechanical Approach

The1H nmr spectrum of [10]-paracyclophane has been recorded at 220 MHz and the methylene protons assigned on the basis of homonuclear decoupled spectra. Local anisotropic contributions to chemical shifts for protons sited above or near the aromatic ring of [10]-paracyclophane have been calculated using a classical model previously proposed by Grant. The residual incremental shift was shown to follow the Waugh–Fessenden–Johnson–Bovey classical ring current model, but the loop separation originally invoked was shown to be unnecessary. These corrected ring current contributions also correlate very well with the quantum-mechanical approach of Haigh and Mallion.

scholarly journals SIMULATION OF INSTABILITIES OF QUANTUM FREQUENCY STANDARDS FOR PROBLEMS OF TIME SERVICES AND NAVIGATION

2021 ◽  
Vol 8 ◽  
pp. 134-142
Author(s):  
Victor M. Tissen ◽  
Alexander S. Tolstikov ◽  
Andrey S. Tomilov
Keyword(s):  
Classical Model ◽  
Random Number Generator ◽  
Quantum Frequency ◽  
Good Convergence ◽  
Advantages And Disadvantages ◽  
Frequency Standards ◽  
The Monte Carlo Method ◽  
Proposed Model ◽  
Quantum Frequency Standards ◽  
The Stability

In the article, two models of instability of quantum frequency standards (QFS) are considered. This is a generally accepted stochastic model that describes the effect of noise with different frequencies on the stability of the clock and the simulation model proposed by the authors of this article, based on the Monte Carlo method and a software random number generator. Based on simulation results, a comparative analysis of advantages and disadvantages of the proposed QFS model in comparison with the classical model was carried out. The results of modeling, which showed good convergence with the accepted theoretical assumptions, are presented. The rationale for the feasibility of using the proposed model in the processing of navigation measurements is given. The possibilities of increasing the accuracy of synchronization of remote sets of reference time are shown.

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