scholarly journals Limitations in the Applicability of Bankruptcy Prediction Models

2021 ◽  
Vol 27 (2) ◽  
pp. 19-31
Keyword(s):  
Prediction Models ◽  
Bankruptcy Prediction ◽  
Bankruptcy Risk ◽  
Wide Range ◽  
Quality Of Accounting Information ◽  
Uniform Definition ◽  
Definition Of ◽  
Specific Definition ◽  
Selection Of

The problems associated with the application of bankruptcy prediction models are of a wide range. A review of the literature shows the lack of a uniform definition of bankruptcy. The existing diversity in the definitions of bankruptcy complicates the comparability of the different studies, hence why it is considered appropriate to take the specific definition of bankruptcy that the bankruptcy prediction models are based on into account when applying them in practice. The selection of companies in the various studies has also been the subject of much criticism. The literature also raises the question of the quality of accounting information. There are also discussions about which indicators should be included in the models. Many studies have demonstrated the benefits of including market information as well as non-financial information in bankruptcy risk analysis. There is also no consensus on the statement that data on the cash flow of companies should be used to increase the predictive power of the models.

COMBINATORIAL POLYNOMIALLY COMPUTABLE CHARACTERISTICS OF SUBSTITUTIONS AND THEIR PROPERTIES

2020 ◽  
Vol 7 (2) ◽  
pp. 34-41
Author(s):  
VLADIMIR NIKONOV ◽  
◽  
ANTON ZOBOV ◽  
Keyword(s):  
Mathematical Expectation ◽  
Point Of View ◽  
Small Range ◽  
Computational Point ◽  
Wide Range ◽  
Bijective Function ◽  
The Difference ◽  
Element Base ◽  
Selection Of

The construction and selection of a suitable bijective function, that is, substitution, is now becoming an important applied task, particularly for building block encryption systems. Many articles have suggested using different approaches to determining the quality of substitution, but most of them are highly computationally complex. The solution of this problem will significantly expand the range of methods for constructing and analyzing scheme in information protection systems. The purpose of research is to find easily measurable characteristics of substitutions, allowing to evaluate their quality, and also measures of the proximity of a particular substitutions to a random one, or its distance from it. For this purpose, several characteristics were proposed in this work: difference and polynomial, and their mathematical expectation was found, as well as variance for the difference characteristic. This allows us to make a conclusion about its quality by comparing the result of calculating the characteristic for a particular substitution with the calculated mathematical expectation. From a computational point of view, the thesises of the article are of exceptional interest due to the simplicity of the algorithm for quantifying the quality of bijective function substitutions. By its nature, the operation of calculating the difference characteristic carries out a simple summation of integer terms in a fixed and small range. Such an operation, both in the modern and in the prospective element base, is embedded in the logic of a wide range of functional elements, especially when implementing computational actions in the optical range, or on other carriers related to the field of nanotechnology.

scholarly journals Unpacking Scientific Competence for Effective Integration in the Curriculum Design

2019 ◽  
Author(s):  
María Napal Fraile ◽  
Ana María Mendióroz Lacambra ◽  
Alicia Peñalva Vélez
Keyword(s):  
Curriculum Design ◽  
Four Dimensions ◽  
General Terms ◽  
Multimedia Resources ◽  
Societal Changes ◽  
Scientific Competence ◽  
Definition Of ◽  
Effective Integration ◽  
Specific Definition ◽  
Selection Of

Educating for Sustainability involves promoting sustainable competences in students. Not in vain, wider societal changes that ensure a balance between economic growth, respect for the environment and social justice must start with individual actions, implying knowledge, capacity and willingness to act. However, and although there is wide consensus that education should promote the development of competences for life, putting this theoretical tenet into may entail more problems. Competence is most often expressed in general terms without a specific definition of the intervening elements (knowledge, skills, values, attitudes), which may collide with the necessity of teachers – as learning planners - concrete entities on which to base their process of design. So that, in this work we propose a series of indicators that serve to characterize the four dimensions of scientific competence – contents of science, contents about science, value of science and utility of science-. Although they are primarily intended to be used to filter multimedia resources in an educational platform, this proposal of indicators can be extrapolated to the management and selection of a variety of resources and activities, and for sharing the objectives and evidences for the acquisition of competencies.

TESTING AS A METHOD OF CONTROL AND ASSESSMENT OF THE FORMATION OF COMPETENCIES

2021 ◽  
Vol 23 (1) ◽  
pp. 18-23
Author(s):  
Belalov R.М.
Keyword(s):  
Educational Practice ◽  
Testing System ◽  
Test Results ◽  
Present Stage ◽  
Research Issues ◽  
Test Items ◽  
Wide Range ◽  
Level Of Knowledge ◽  
Definition Of

At the present stage, pedagogical tests are one of the most accessible and developed methods for assessing students' knowledge. Evaluation of the results of global research on testing problems showed that the developers of test items pay special attention to the form and their standardization, the processing of test results and the interpretation of the data obtained, methods of automatic test formation. The goal is to study the possibility of using testing to assess the formation of students' competencies. Materials and methods. Theoretical: a review of psychological and pedagogical literature on research issues, analysis, synthesis, generalization, systematization. Results. Testing characterizes a number of properties, the main of which is the objectivity of the assessment of results, the definition of "gaps" in knowledge. The result of testing is obtaining objective information about the quality of knowledge and skills, determining the sections that are the worst learned by the students. All of the above makes it possible to adjust the course of training. Test control can be external, when the subjects are offered a dichotometric range, which contains both completed and unfulfilled tasks on a wide range of issues. During the testing process, students have the opportunity to independently identify gaps in their own knowledge. The study confirms the possibility of using testing in assessing the formation of students' competencies and ultimately provides an increase in the level of knowledge. Conclusion. At the present stage, the introduction of tests into educational practice is an inevitable process, therefore, efforts should be directed to the development of a theoretical platform for the testing system, which will entail an increase in the efficiency of using tests as a form of control.

scholarly journals Functional Unit for Impact Assessment in the Mining Sector—Part 1

2020 ◽  
Vol 12 (22) ◽  
pp. 9313
Author(s):  
Julien Bongono ◽  
Birol Elevli ◽  
Bertrand Laratte
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Functional Unit ◽  
Multiscale Approach ◽  
Mining Sector ◽  
End Use ◽  
Definition Of ◽  
Sector Part ◽  
Selection Of

More and more efforts are directed towards the standardization of the methods of determining the functional unit (FU) in a Life Cycle Assessment (LCA). These efforts concern the development of theories and detailed methodological guides, but also the evaluation of the quality of the FU obtained. The objective of this article is to review this work in order to propose, using a multiscale approach, a method for defining the FU in the mining sector, which takes into account all the dimensions of the system under study. In this first part, the emphasis is on identifying the shortcomings of the FU. The absence of a precise normative framework specific to each sector of activity, as well as the complex, multifunctional and hard-to-scale nature of the systems concerned, are at the origin of the flexibility in the selection of the FU. This lack of a framework, beyond generating a heterogeneous definition of the FU for the same system, most often leads to an incomplete formulation of this sensitive concept of LCA. It has been found that key parameters such as the end-use of a product or process, as well as the interests of stakeholders, are hardly taken into account in the specification of the FU.

CURRENT BEST PRACTICES AND BIOBANKING RECOMMENDATIONS

2019 ◽  
Vol 64 (12) ◽  
pp. 769-776 ◽  
Author(s):  
Y. V. Doludin ◽  
A. L. Borisova ◽  
M. S. Pokrovskaya ◽  
O. V. Stefanyuk ◽  
O. V. Sivakova ◽  
...  
Keyword(s):  
Best Practices ◽  
Preanalytical Phase ◽  
Wide Range ◽  
Research Problems ◽  
Processing And Storage ◽  
And Storage ◽  
Quality Of Research ◽  
Selection Of

The biobank is a structure established with the goal of long-term responsible storage of biological samples and the associated data for their further use in scientific and clinical research. The objectives of biobanking are the creation of unified recommendations on: the planning of premises and the selection of equipment for storage; development of management methods and staff training; standardization of methods for the collection, shipping, processing and storage of biomaterial of various origins, as well as methods for quality control and validation of the applied methods; creation and use of databases of information accompanying biospecimens. The lack of common standards for conducting the preanalytical phase has been the cause of low accuracy and poor reproducibility of research results. To date, a large number of guidelines and best practices have been published that provide an answer to a wide range of problems in organizing the biobanking process. The article provides an overview of the most famous biobanking guidelines that can be used to solve various research problems. Biobanking in Russia is actively developing. Since 1996 there is a work on the legislative regulation of biobanking activities, as a result of which a number of regulatory documents have been issued. An important stage in the development of biobanking in Russia was the establishment of the “National Association of Biobanks and Biobanking Specialists” (NASBio) in 2018, which included representatives of medical and research institutions, commercial firms, and qualified specialists in the field of biobanking. One of the key tasks of NASBio is the adaptation and implementation of the best biobanking practices in Russian research institutes and centers. The use of modern guidelines and best practices on biobanking will lead to an increase in the quality of research and publications.

scholarly journals Quality of Human Resources in Europe Measured by Selected Indicators of Human Potential

2017 ◽  
Vol 20 (1) ◽  
pp. 60-76
Author(s):  
Slavomir Bucher
Keyword(s):  
Human Resources ◽  
Regional Differences ◽  
Spatial Differentiation ◽  
Human Potential ◽  
Regional Differentiation ◽  
Regression Analyses ◽  
Wide Range ◽  
Selection Of

The paper deals with regional differentiation of human resources and its determinants identified by selected indicators of human potential. The selection of correct and relevant indicators has a key role in the identification and measurement of human potential. The aim of the study is to outline causal and determinant relationship (the relation and the level of dependence) in the spatial differentiation of human resources in Europe and approaches to their interpretation. The main purpose of this paper is to analyze the link between human potential and quality or inequality of life and its effect on population from a demographic viewpoint. Methods of correlation and regression analyses were applied. A wide range of the most important and most often used human potential assessment indicators based on a basic systemic classification of human potential will also be presented. Although the first glance the quality of human resources situation in Europe might seem relatively compact, deeper analysis showed that there are quite significant regional differences. Our results show that set of specific condition a constant or moderately growing human capital may aggravate the consequences of population ageing rather than alleviate them. The important results of this study include recognition of the existence of several easily manageable methods and ways of measuring demographic and/or socio-economic solutions to the challenges posed by quality of human resources in Europe.

The characterization of volatile molecular substances

1993 ◽  
Vol 443 (1918) ◽  
pp. 313-332 ◽  
Keyword(s):  
Subjective Evaluation ◽  
Sensor Arrays ◽  
Intrinsic Property ◽  
Wide Range ◽  
The Laplace Transform ◽  
Molecular Substances ◽  
Definition Of ◽  
Enclosed Space

Diffusion for gaseous sources comprising more than one type of substance is examined to show how relative concentrations change with time and distance. The large variations which are predicted make nonsense of the popular assumption that odour or smell is an intrinsic property of the source material. However, some characterization of volatile chemical substances is needed. It is shown that this is possible by creating a uniform and stable atmosphere after the relapse of sufficient time by introducing the gas mixture into an enclosed space. In this investigation the situation is analysed for a spherical enclosure using Fourier analysis techniques for the long timescale behaviour and the Laplace transform for the short timescale solution. The measurement of odours via the response of sensor arrays within a spherical enclosure is considered and a proposal is made for utilizing such an enclosure in a definition of volatile molecular substances (analogous to biological ‘smell’). The conditions for optimum compatibility between an array of sensors and a set of calibrands are discussed and the practical means of effecting such measurements are considered in relation to known types of sensor. It is concluded that the quality of volatile molecular substances is definable and measurable down to very low gas concentrations in air: probably below 10 parts per billion for a wide range of gas mixtures unconstrained by such limitations associated with a biological nose such as toxicity, temperature and subjective evaluation.

scholarly journals Bankruptcy Prediction Models Based on Value Measures

2020 ◽  
Vol 14 (1) ◽  
pp. 6
Author(s):  
Andrzej Jaki ◽  
Wojciech Ćwięk
Keyword(s):  
Discriminant Function ◽  
Prediction Models ◽  
Statistical Significance ◽  
Bankruptcy Prediction ◽  
Warning Signs ◽  
Discriminant Functions ◽  
Corporate Risk Management ◽  
Bankruptcy Risk ◽  
Corporate Risk ◽  
Diagnostic Variables

In the existing studies devoted to predicting bankruptcy, the authors of such models only used book measures. Considering the fact that the evolution of corporate measure efficiency (in addition to book measures) brought into existence and exposed the importance of cash measures, market measures, and measures based on the economic profit concept, it is justified to carry out research into the possibility of using these measures as variables within the discriminant function. The studied dataset was divided into a training set and a testing set based on two variants of the sample division. The assessment of the statistical significance of the built discriminant functions as well as the diagnostic variables was conducted using the STATISTICA package. The research was conducted separately for each variant. In the first step, a total of 30 discriminant models were created. This enabled us to select 20 diagnostic variables that were considered within the two models that were characterised by the highest predictive abilities—one for each variant. The discriminant function that was estimated for the first variant was based on the use of eight diagnostic variables, and 13 diagnostic variables were used in the function that was estimated for the second variant. The conducted analysis has proven that shareholder value measures are a useful tool that can be applied for the needs of corporate risk management in the area of the assessment of a firm’s bankruptcy risk. Using two variants of the division of the research sample into the training and testing sets, it turned out that the division affects the predictive efficiency of the discriminant functions. At the same time, the obtained findings tend to claim that the presence of the value measures from all four of the studied groups in the output set of the diagnostic variables is necessary for possibly building the most efficient tool for the early warning signs of bankruptcy risk.

scholarly journals Selection criteria of optimal characteristic material and technologies for precision processing of basic working surface of human hip-joint implant

2018 ◽  
Vol 184 ◽  
pp. 01015 ◽  
Author(s):  
Raul Turmanidze ◽  
Predrag Dašić ◽  
Giorgi Popkhadze
Keyword(s):  
Hip Joint ◽  
Spherical Surface ◽  
Sapphire Crystal ◽  
Spherical Surfaces ◽  
Degree Of Orientation ◽  
Original Scheme ◽  
Definition Of ◽  
Influence Degree ◽  
Selection Of

In view of the fact that the endo-prosthesis heads of human hip-joint are operated in extreme conditions, in respect of load, the selection of corresponding material and also increase of precision and quality of machining of spherical surfaces is rather topical task. In the submitted work are reviewed the problems connected with definition of the influence degree of orientation of the sapphire crystal on its workability during diamond grinding with a butt of the ring and elaboration of the perspective, original scheme of formation of the incomplete spherical surface, particularly, of the sapphire head of endo-prosthesis of the human hip-joint.

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