Interval valued Pythagorean fuzzy ideals in semigroups

Interval valued Pythagorean fuzzy ideals in semigroups

Authors: Veerappan Chinnadurai; Arul Selvam
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Abstract

In this paper, we define the new notion of interval-valued Pythagorean fuzzy ideals in semigroups and established the properties of its with suitable examples. Also, we introduce the concept of interval valued Pythagorean fuzzy sub-semigroup, interval valued Pythagorean fuzzy left (resp. right) ideal, interval valued Pythagorean fuzzy bi-ideal, interval valued Pythagorean fuzzy interior ideal and homomorphism of an interval valued Pythagorean fuzzy ideal in semigroups with suitable illustration. We show that every interval valued Pythagorean fuzzy left (resp. right) ideal is an interval valued Pythagorean fuzzy bi-ideal.

Keywords: Pythagorean Fuzzy, Fuzzy Ideals, Homomorphism, Semigroups
Some similarity measures of rough interval Pythagorean fuzzy sets

Some similarity measures of rough interval Pythagorean fuzzy sets

Authors: V. S. Subha; Dhanalakshmi Dhanalakshmi
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Abstract

In this paper, we expose cosine, jaccard and dice similarity measures and rough interval Pythagorean mean operator. Some of the important properties of the defined similarity measures have been established. Then the proposed methods are applied for solving multi attribute decision making problems. Finally, a numerical example is solved to show the feasibility, applicability and effectiveness of the proposed strategies.

Keywords: Interval Valued Fuzzy Set, Interval Valued Pythagorean Fuzzy Set, Rough Set, Cosine similarity Measure, Jaccard Similarity measure, Dice Similarity Measure
Spherical interval-valued fuzzy bi-ideals of gamma near-rings

Spherical interval-valued fuzzy bi-ideals of gamma near-rings

Authors: Chinnadurai Veerappan; Shakila Venkatesan
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Abstract

In this paper we introduce the concept of the spherical interval-valued fuzzy bi-ideal of gamma near-ring R and its some results. The union and intersection of the spherical interval-valued fuzzy bi-ideal of gamma near-ring R is also a spherical interval-valued fuzzy bi-ideal of gamma near-ring R . Further we discuss about the relationship between bi-ideal and spherical interval-valued fuzzy bi-ideal of gamma near-ring R.

Keywords: Spherical Fuzzy Set, Interval-Valued Fuzzy Set, Γ -Near-Rings, Bi-Ideal
K-algebras on quadripartitioned single valued neutrosophic sets

K-algebras on quadripartitioned single valued neutrosophic sets

Authors: Mohanasundari Mohan; Mohana Krishnaswamy
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Abstract

Abstract Quadripartitioned single valued neutrosophic (QSVN) set is a powerful structure where we have four components Truth-T, Falsity-F, Unknown-U and Contradiction-C. And also it generalizes the concept of fuzzy, initutionstic and single valued neutrosophic set. In this paper we have proposed the concept of K-algebras on QSVN, level subset of QSVN and studied some of the results. In addition to this we have also investigated the characteristics of QSVN Ksubalgebras under homomorphism.

Keywords: Quadripartitioned Single Valued Neutrosophic Set (QSVNS), K-Algebras, Homomorphism, Quadripartitioned Single Valued Neutrosophic K-Algebras
New Plithogenic sub cognitive maps approach with mediating effects of factors in COVID-19 diagnostic model

New Plithogenic sub cognitive maps approach with mediating effects of...

Authors: Nivetha Martin; R. Priya; Florentin Smarandache
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Abstract

The escalation of COVID-19 curves is high and the researchers worldwide are working on diagnostic models, in the way this article proposes COVID-19 diagnostic model using Plithogenic cognitive maps. This paper introduces the new concept of Plithogenic sub cognitive maps including the mediating effects of the factors. The thirteen study factors are categorized as grouping factors, parametric factors, risks factors and output factor. The effect of one factor over another is measured directly based on neutrosophic triangular representation of expert’s opinion and indirectly by computing the mediating factor’s effects. This new approach is more realistic in nature as it takes the mediating effects into consideration together with contradiction degree of the factors. The possibility of children, adult and old age with risk factors and parametric factors being infected by corona virus is determined by this diagnostic model.

Keywords: Plithogenic Cognitive Maps, Sub Cognitive Maps, Diagnostic Model, COVID-19
A study of maximal and minimal ideals of n-refined neutrosophic rings

A study of maximal and minimal ideals of n-refined neutrosophic rings

Authors: Mohammad Abobala
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Abstract

If R is a ring, then Rn(I) is called a refined neutrosophic ring. Every AH-subset of Rn(I) has the form P = ∑ni=0 p i Ii= {a0+a1I+⋯+anIn: ai∈p i}, where p i are subsets of the classical ring R. The objective of this paper is to determine the necessary and sufficient conditions on p i which make P be an ideal of Rn(I). Also, this work introduces a full description of the algebraic structure and form for AH-maximal and minimal ideals in Rn(I).

Keywords: n-Refined Neutrosophic Ring, n-Refined AH-Ideal, Maximal Ideal,
Neutrosophic soft matrices and its application in medical diagnosis

Neutrosophic soft matrices and its application in medical diagnosis

Authors: Mamoni Dhar
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Abstract

In real life situations, there are many issues in which we face uncertainties, vagueness, complexities and unpredictability. Neutrosophic sets are a mathematical tool to address some issues which cannot be met using the existing methods. Neutrosophic soft matrices play a crucial role in handling indeterminant and inconsistent information during decision making process. The main focus of this article is to discuss the concept of neutrosophic sets, neutrosophic soft sets and neutrosophic soft matrices theory which are very useful and applicable in various situations involving uncertainties and imprecisions. Thereafter our intention is to find a new method for constructing a decision matrix using neutrosophic soft matrices as an application of the theory. A neutrosophic soft matrix based algorithm is considered to solve some problems in the diagnosis of a disease from the occurrence of various symptoms in patients. This article deals with patient-symptoms and symptoms-disease neutrosophic soft matrices. To come to a decision, a score matrix is defined where multiplication based on max-min operation and complementation of neutrosophic soft matrices are taken into considerations.

Keywords: Fuzzy Sets, Soft Sets, Soft Matrix, Neutrosophic Soft Sets, Neutrosophic Sets, Neutrosophic Soft Matrix
Neutrosophication of statistical data in a study to assess the knowledge, attitude and symptoms on reproductive tract infection among women

Neutrosophication of statistical data in a study to assess the knowled...

Authors: Somen Debnath
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Abstract

Statistics mainly concerned with data that may be qualitative or quantitative. Earlier we have used the notion of statistics in the classical sense where we assign values that are crisp. But in reality, we find some areas where the crisp concept is not sufficient to solve the problem. So, it seems difficult to assign a definite value for each parameter. For this, fuzzy sets and logic have been introduced to give the flexibility to analyze and classify statistical data. Moreover, we may come across such parameters that are indeterminate, uncertain, imprecise, incomplete, unknown, unsure, approximate, and even completely unknown. Intuitionistic fuzzy set explain uncertainty at some extent. But itis not sufficient to study all sorts of uncertainty present in real-life. It means that there exists data which are neutrosophic in nature. So, neutrosophic data plays a significant role to study the concept of indeterminacy present in a data without any restriction. The main objective of preparing this article is to highlighting the importance of neutrosophication of statistical data in a study to assess the symptoms related to Reproductive Tract Infections (RTIs) or Sexually Transmitted Infections (STIs) among women by sampling estimation.

Keywords: Neutrosophic Statistics, Neutrosophic Data, Sample Size, Sexually Transmitted Disease
Interval type-2 fuzzy logic system for remote vital signs monitoring and shock level prediction

Interval type-2 fuzzy logic system for remote vital signs monitoring a...

Authors: Uduak Umoh; Samuel Udoh; Abdultaofeek Abayomi; Alimot Abdulzeez
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Abstract

Interval Type-2 Fuzzy Logic Systems (IT2 FLSs) have shown popularity, superiority, and more accuracy in performance in a number of applications in the last decade. This is due to its ability to cope with uncertainty and precisions adequately when compared with its type-1 counterpart. In this paper, an Interval Type-2 Fuzzy Logic System (IT2FLS) is employed for remote vital signs monitoring and predicting of shock level in cardiac patients. Also, the conventional, Type-1 Fuzzy Logic System (T1FLS) is applied to the prediction problems for comparison purpose. The cardiac patients’ health datasets were used to perform empirical comparison on the developed system. The result of study indicated that IT2FLS could coped with more information and handled more uncertainties in health data than T1FLS. The statistical evaluation using performance metrices indicated a minimal error with IT2FLS compared to its counterpart, T1FLS. It was generally observed that the shock level prediction experiment for cardiac patients showed the superiority of IT2FLS paradigm over T1FLS.

Keywords: Uncertainty, Mamdani Fuzzy Inference, Cardiac Patient, Health Data, Deffuzification
Evaluation and selection of supplier in supply chain with fuzzy analytical network process approach

Evaluation and selection of supplier in supply chain with fuzzy analyt...

Authors: Mohammad Ghasempoor Anaraki; Dmitriy S. Vladislav; Mahdi Karbasian; Natalja Osintsev; Victoria Nozick
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Abstract

One of the most important issues concerning the designing a supply chain is selecting the supplier. Selecting proper suppliers is one of the most crucial activities of an organization towards the gradual improvement and a promotion in performance. This intricacy is because suppliers fulfil a part of customer’s expectancy and selecting among them is multi-criteria decision, which needs a systematic and organized approach without which this decision may lead to failure. The purpose of this research is proposing a new method for assessment and rating the suppliers. We have identified several evaluation criteria and attributes; the selection among them was by the Simple Multi-Attribute Rating Technique (SMART) method, then we have specified the connection and the influence of the criteria on each other by DEMATEL method. After that, suppliers were graded by using the Fuzzy Analytical Network Process (FANP) approach and the most efficient one was selected. The innovation of this research is combining the SMART method, DEMATEL method, and Analytical Network Process in Fuzzy state which lead to more exact and efficient results which is proposed for the first time by the researchers of this study.

Keywords: Supply Chain Management (SCM), Supplier Selection, Multi Criteria Decision Making (MCDM), DEMATEL, Fuzzy Analytical Network Process (FANP)
Publishing work on the authority

Publishing work on the authority

Authors: Roman Ostapenko
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Abstract

In a conversation with the executive editor of a reputable periodical, I noticed that the journal “Economic Consultant”, according to the financial model of Gold Open Access, publishes its articles in the open access, but at the same time charges the authors (or institutions) for publishing services. In response, I heard the editor exclaim: “If our journal becomes paid, I will leave my job!” The authors are also dissatisfied with the need to pay for the publication, I quote: “I don’t agree! I have never paid for my intellectual product, and I am not going to pay for it. I give it for free, and I consider the publication of my material as a fee for my work”. Indeed, some institutions have their own journals, the publication of which is free for employees. However, this is possible because the work of proofreaders, reviewers, and employees of the printing house is paid by the scientific or educational organization itself. Young commercial publishers that do not have sponsorship have to cover their costs through payments from authors. It should be noted that the absence of printed versions of journals does not in any way simplify publishing: electronic periodicals have additional expenses for maintaining the site, preparing data for uploading to bibliographic and information databases, etc. With that, it is necessary to understand that the reflection of the results of specialists’ research work in periodicals significantly increases the authority not only of the authors themselves but also of these publications. A number of commercial periodicals take a hybrid approach to publishing. For example, some publications do not charge authors who “do credit to the journal”. There are journals in which the authors act as free consultants, reviewers, thereby getting the opportunity to publish their own articles free of charge. The rector of one of the higher education institutions, after another open day, said: “We used to choose, and now they choose us”. Something similar is now observed in the publishing industry – there is a struggle between authors for publication in reputable periodicals, and young journals themselves have to fight for authors. The journal “Economic Consultant” adheres to the financial model of Gold Open Access, which provides for payment by the authors for the services of preparing an article for publication. Almost the entire amount received from the author is spent on translating Russian-language articles into English, the rest – on typesetting, that is, the author understands what he is paying for. No fee is charged for authors of English-language articles – in this case, we work according to the Platinum Open Access model since we do not charge either readers or authors. Publishing activities under the open access model are funded by institutions, societies, using grants. In the absence of financial support, the publisher is forced to work for free – for the future, for credibility.

Keywords: publish, authority
Classification of management errors within the scope of the basic notions of Korogodin’s theory of goal-oriented systems

Classification of management errors within the scope of the basic noti...

Authors: Eduard A. Sosnin, Boris N. Poizner
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Abstract

Introduction. The issue of goal-setting in management in general and in public administration, in particular, is one of the most relevant and important for management theory and practice. The purpose hereof is to study and reveal the mechanism of goal-setting in management. Materials and methods. The article is based on Korogodin’s theory of goal-oriented systems. The works on public administration, social construction and management, as well as foreign research on organizational management and business, are used herein. Results. A simple classification of typical management errors from the standpoint of the theory of goal-oriented systems is given: those related to goals, resources, operators, and by-products. Discussion and conclusion. The potential of using the teleonomic systems approach for the analysis of problem situations in management has been demonstrated. A strict and logical classification makes it possible to algorithmize the management decision-making process.

Keywords: system, goal-oriented systems of activity, management decision, limited resource approach, resolution of social contradictions, V.I. Korogodin
State and directions of development of the industrial sector of the Sakhalin Region of the Russian Federation

State and directions of development of the industrial sector of the Sa...

Authors: Lyudmila Yu. Filobokova, Alexandra Yu. Zhdankina
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Abstract

Introduction. This study is relevant in connection with the search for new points of development of the Sakhalin Region in new sectors of the economy that are not related to the mineral wealth exports model of the economy. The purpose of the paper is to assess the state of the industrial sector in the Sakhalin Region and consider the directions of its development. Materials and Methods. Federal Acts and other regulations of the Russian Federation, data from Rosstat; papers in periodicals on economics, management, and regional studies were used. Results. According to a number of indicators characterizing the state of the economy, the Sakhalin Region occupies a leading position not only in the Far Eastern Federal District but also in the entire country. In 2019, the index of industrial production in the Sakhalin Region decreased by 4%, in particular, the index of production in mining in 2019 decreased by almost 5%. At the same time, about 90% of this type of activity falls on the oil and gas sector. The growth rates of mineral extraction are declining against the background of the growth of other industries: manufacturing (112.7%), electric power, etc. (104.5%), water supply (165%). Discussion and Conclusion. A high level of depreciation of fixed assets of enterprises requires the activation of investment processes for their renewal and modernization. High investment activity is required, which will have a positive impact on the efficiency of production processes. It is necessary to increase the level of graduates training at the institutions of higher, secondary, and primary vocational education due to their insufficient practical training using modern equipment, and bad command of advanced technologies.

Keywords: industrial sector, Sakhalin Region, Far Eastern Federal District, Russian Federation, mineral wealth exports model, oil and gas sector, investment activity
An economic study on maize production in some selected areas of Swat District

An economic study on maize production in some selected areas of Swat D...

Authors: Ijaz Uddin, Salman Shah, Saeedullah Khan, Zulfiqar Khan
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Abstract

Introduction. Maize production in Pakistan is reduced over the last decades. Many problems are creating in Tehsil Matta in maize production. Which are technical, marketing, and social problems. The technical problem includes the high cost of irrigation, lack of financial capital, lack of scientific knowledge of farmers, lack of quality seeds. Marketing problems include low cost of maize production, high cost of maize inputs. The social problem includes the damage of seeds of birds, the damage effect by insects, and theft in maize cob. Materials and Methods. The present study aims to find the socio-economic characteristics of maize producers and also estimate their profit function under different farm size groups of maize production. Five villages are selected from the Swat District. Namely, villages, Sakhra, Sambat, Bara Drushkhela, Chupriyal, and Beha. Primary data has been collected from 75 farmers. The simple random sampling has been followed, both statistical and tabulation analysis were applied in this study. The average area under maize cultivation was 64 % respondents are the owner and 36 % were least out of selected sample size. A simple average method was used for finding the results. Results and Discussion. The majority 77.33% respondents were literate and 22.67% were illiterate, the main source of seeds 94.67% own, 5.33% fellow farmers and 0 % were government provided. The majority of respondents i.e 33.33% respondent was facing the water problem, while 66.67 % of respondent were used the canal for irrigation. Finally, in each kanal total revenue was 35800 and per kanal total cost was 16360. The profit was R.s 19440. It is recommended that the government should provide these inputs and other related support lead to an increased significantly in maize production.

Keywords: maize production, socioeconomics characteristics of farmers, profit, maize
An econometric modelling of the savings – investments nexus for Ghana

An econometric modelling of the savings – investments nexus for Ghana

Authors: Samuel Asuamah Yeboah, Boateng Kwadwo Prempeh
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Abstract

Introduction. The problem under discussion is whether savings are associated with investments in the long-term and whether savings predict investment with feedback or not. Addressing the problem is important since it informs policy formulation in the financial sector in ensuring efficient financial intermediation. The purpose of the article is looks at the savings-investment relationship for Ghana during the period 1960 to 2016. Methodology. Utilizing ARDL (with bounds testing) approach, the Granger predictive test, the Generalised Impulse Response Function, and Variance decomposition function. Results. The results indicate that a 1% increase in savings, GDP and financial development would result in a 0.069%, 0.266% and 0.125% increase respectively in investment in the short-term. It is discovered that savings do not cause investment in the long-run but rather in the short-run. The Granger causality test establishes a unidirectional causality running from savings to investment in the short-run. Discussion and Conclusion. The ramifications of the finding are that there is capital fixed status globally. Future examinations ought to consider structural break(s) issues as well as panel analysis to determine if the findings of the current study would be reproduced.

Keywords: savings, investment, long term, short-run, ARDL approach

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