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Author(s): 

MORTAZAVI REZA

Issue Info: 
  • Year: 

    2020
  • Volume: 

    12
  • Issue: 

    1
  • Pages: 

    35-43
Measures: 
  • Citations: 

    0
  • Views: 

    356
  • Downloads: 

    129
Abstract: 

Privacy issues during data publishing is an increasing concern of involved entities. The problem is addressed in the field of statistical disclosure control with the aim of producing protected datasets that are also useful for interested end users such as government agencies and research communities. The problem of producing useful protected datasets is addressed in multiple computational privacy models such as k-anonymity in which data is clustered into groups of at least k members. Microaggregation is a mechanism to realize k-anonymity. The objective is to assign records of a dataset to clusters and replace the original values with their associated cluster centers which are the average of assigned values to minimize information loss in terms of the sum of within group squared errors (SSE). While the problem is shown to be NP-hard in general, there is an optimal polynomial-time algorithm for univariate datasets. This paper shows that the assignment of the univariate microaggregation algorithm cannot produce optimal partitions for Integer observations where the computed centroids have to be Integer values. In other words, the integrality constraint on published quantities has to be addressed within the algorithm steps and the optimal partition cannot be attained using only the results of the general solution. Then, an effective method that considers the constraint is proposed and analyzed which can handle very large numerical volumes. Experimental evaluations confirm that the developed algorithm not only produces more useful datasets but also is more efficient in comparison with the general optimal univariate algorithm.

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Issue Info: 
  • Year: 

    2022
  • Volume: 

    14
  • Issue: 

    4
  • Pages: 

    457-465
Measures: 
  • Citations: 

    0
  • Views: 

    34
  • Downloads: 

    16
Abstract: 

In conventional DEA methods, all inputs and outputs are assumed to be continuous. However, the implied presumption of continuous data may not maintain an acceptable level of precision in practical data. Many practical situations such as number of teachers in a school, number of students in a college, or research papers only take Integer values. Presented work presumes subsets of input and output variables in traditional , ve-pronged axioms in DEA model to be Integer values for the , rst time in the , eld. An additional e , ort in this work expands axioms and a new model is presented. This paper presents a novel two phase model that in the , rst phase produces more precise e, ciency values and the best benchmark in its second phase, i. e. the nearest Integer point to the e, ciency boundary is selected based on constant returns to scale. A case study is presented that demonstrates a comparison of e, ciency values obtained with this model compared to prior models that is show in table 1. And in Table 2, the values of the slack are compared with each other.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

HOOSHMAND M. H.

Issue Info: 
  • Year: 

    2010
  • Volume: 

    79
  • Issue: 

    1
  • Pages: 

    65-72
Measures: 
  • Citations: 

    1
  • Views: 

    140
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

محمدی مریم

Issue Info: 
  • Year: 

    1397
  • Volume: 

    7
  • Issue: 

    4 (ویژه نامه)
  • Pages: 

    7-9
Measures: 
  • Citations: 

    0
  • Views: 

    407
  • Downloads: 

    0
Keywords: 
Abstract: 

شرح نیاز به تغییر تشخیص داده شده (توصیف وضعیت موجود مشکل دار): گزارش فوری مقادیر بحرانی تأثیر بسزایی در حیات بیمار یا تفسیر و ماهیت تشخیص و پیشگیری از بیماری دارد. در برخی موارد به دلیل عدم شناسایی مقادیر بحرانی و عدم گزارش فوری آنها به بخش، ایمنی بیمار به خطر افتاده که منجر به تشخیص دیرتر مشکل و گاهاًً ایجاد عوارض جدی در بیمار شده است. بنابراین با توجه به اهمیت موضوع باید راهکاری برای گزارش فوری در نظر گرفته شود (به دلیل محدود بودن تعداد خط تلفن بخش ها و مشغول بودن و در دسترس نبودن) خط تلفن یکطرفه این امکان را فراهم می نماید...

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2024
  • Volume: 

    16
  • Issue: 

    3
  • Pages: 

    58-73
Measures: 
  • Citations: 

    0
  • Views: 

    9
  • Downloads: 

    0
Abstract: 

In traditional Data Envelopment Analysis (DEA) approaches, inputs and outputs are usually considered as exact and real values. The relative efficiency of the Decision Making Units (DMUs) is evaluated and it is known that the factors are inputs and/or outputs. However, there are some conditions under which the efficiency of DMUs should be calculated while the data are Integer and ambiguous. Therefore, various Integer DEA models have been proposed to determine the performance of DMUs when Integer data and fuzzy factors are available. In addition, there are cases where the efficiency of DMUs should be determined when Integer data and flexible factors are available. Therefore, some Integer DEA methods have been proposed to calculate the performance of DMUs and specify the role of flexible measures when some of the data are Integer and flexible factors are available. However, there are some situations where there are Integer data, fuzzy Integer measures and flexible factors. Therefore, this paper sheds light on the nature of the model to determine the efficiency of DMUs when there are Integer inputs and/or outputs, flexible factors and fuzzy Integer measures, and determines the role of factors with uncertain inputs or outputs. In fact, slacks are addressed and a slack-based efficiency measure (SBM) is defined to compute the performance of DMUs in the presence of flexible factors, Integer data and fuzzy Integer measures. The proposed approaches are demonstrated and illustrated using an example.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

mahbobeh fadavi mahbobeh fadavi, fadavi mahbobeh

Issue Info: 
  • Year: 

    2023
  • Volume: 

    2
  • Issue: 

    71
  • Pages: 

    95-109
Measures: 
  • Citations: 

    0
  • Views: 

    64
  • Downloads: 

    0
Abstract: 

The Qur'an contains religious values ​​for the advancement of man to happiness. The claim is that Quranic teachings are the basis of religious values; By choosing it better, the method of proving religious beliefs can be extracted. This research tries to extract the method of proving religious beliefs with a business approach and by using artistic forms with a descriptive and analytical method and with a better selection of Quranic teachings. Based on the verses, the process was defined as the introduction to the institutionalization of religious values ​​in the businessman 1- Gaining self-knowledge (knowing the talents, capacities, existential dimensions and position of man in the universe); 2- Gaining monotheistic insight (knowing the origin and your relationship with the Creator); 3- Reciprocity is (knowing the destination and drawing the path of happiness in the universe). After the realization of these three stages, the beliefs must be proven through rational and scientific reasoning and penetrate, in this case, the acceptance of good qualities in the businessman will be facilitated.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2007
  • Volume: 

    2
  • Issue: 

    -
  • Pages: 

    167-181
Measures: 
  • Citations: 

    1
  • Views: 

    183
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2001
  • Volume: 

    27
  • Issue: 

    1
  • Pages: 

    1-18
Measures: 
  • Citations: 

    0
  • Views: 

    2728
  • Downloads: 

    199
Abstract: 

To View The Abstract, Please Click On PDF File.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2024
  • Volume: 

    9
  • Issue: 

    4
  • Pages: 

    693-705
Measures: 
  • Citations: 

    0
  • Views: 

    9
  • Downloads: 

    0
Abstract: 

‎Sombor index of a graph $G$ is defined by $SO(G) = \sum_{uv \in E(G)} \sqrt{d^2_G(u)+d^2_G(v)}$, where $d_G(v)$ is the degree of the vertex $v$ of $G$. An $r$-degree graph is a graph whose degree sequence includes exactly $r$ distinctive numbers. In this article, we study $r$-degree connected graphs with Integer Sombor index for $r \in \{5, 6, 7\}$. We show that: if $G$ is a 5-degree connected graph of order $n$ with Integer Sombor index then $n \geq 50$ and the equality occurs if only if $G$ is a bipartite graph of size 420 with $SO(G) = 14830$; if $G$ is a 6-degree connected graph of order $n$ with Integer Sombor index then $n \geq 75$ and the equality is established only for the bipartite graph of size $1080$; and if $G$ is a 7-degree connected graph of order $n$ with Integer Sombor index then $n \geq 101$ and the equality is established only for the bipartite graph of size $1680$.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

JARRAY F.

Issue Info: 
  • Year: 

    2011
  • Volume: 

    8
  • Issue: 

    1
  • Pages: 

    41-48
Measures: 
  • Citations: 

    0
  • Views: 

    309
  • Downloads: 

    0
Abstract: 

We study the problem of reconstructing binary images from four projections data in a fuzzy environment. Given the uncertainly projections, we want to find a binary image that respects as best as possible these projections. We provide an iterative algorithm based on fuzzy Integer programming and linear membership functions.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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