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متن کامل


نویسندگان: 

ENTORF H. | GOLLAC M. | KRAMARZ F.

اطلاعات دوره: 
  • سال: 

    1999
  • دوره: 

    17
  • شماره: 

    3
  • صفحات: 

    464-491
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    138
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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

بازدید 138

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نویسندگان: 

Niazi Torshiz Masood | Amintoosi Haleh

اطلاعات دوره: 
  • سال: 

    2018
  • دوره: 

    1
  • شماره: 

    1
  • صفحات: 

    9-20
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    176
  • دانلود: 

    0
چکیده: 

The main idea behind social crowdsensing is to leverage social friends as crowdworkers to participate in crowdsensing tasks. A main challenge, however, is the identification and recruitment of well-suited workers. This becomes especially more challenging for large-scale online social networks with potential sparseness of the friendship network which may result in recruiting participants who are not in direct friendship relations with the requester. Such recruitment may increase the possibility of collusion among participants, thus threatening the application security and affecting data quality. In this paper, we propose a collusionresistant worker selection method which aims to prevent the selection of colluders as suitable participants. For each participant who is considered to be selected as suitable, the proposed method is aimed to prevent any possible collusion. To do so, it determines whether the selection of a new participant may result in the formation of a colluding group among the selected participants. This has been achieved through leveraging the Frequent Itemset Mining technique and defining a set of collusion behavioral indicators. Simulation results demonstrate the efficacy of our proposed collusion prevention method in terms of selecting efficient collusion indicators and detecting the colluding groups.

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

بازدید 176

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نویسندگان: 

DRUCKER PETER F.

اطلاعات دوره: 
  • سال: 

    1999
  • دوره: 

    41
  • شماره: 

    2
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    116
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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

بازدید 116

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

MARQUES J.F.

اطلاعات دوره: 
  • سال: 

    2006
  • دوره: 

    25
  • شماره: 

    9
  • صفحات: 

    884-895
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    149
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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

بازدید 149

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اطلاعات دوره: 
  • سال: 

    1401
  • دوره: 

    7
  • شماره: 

    2
  • صفحات: 

    103-132
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    148
  • دانلود: 

    24
چکیده: 

Purpose: Managers are one of the important elements of an organization, for this reason, in order to draw the future of the organization, it is necessary for the planners to specify the conditions of their selection and appointment. Therefore, the current research has been done with the aim of identifying and analyzing the components of selecting future principals.Method: In this research, comparative and benchmarking method is used as a prospective approach. This approach is based on the belief that today's advanced organizations/countries can be considered as a model for the future of another organization/countries in their respective subjects. For this, first, the fields of comparison and benchmarking were determined using Brody's four-step comparison method; then the countries of Canada, Finland, Australia, South Africa, and Japan were selected according to the qualitative balance value in the international advanced TEAMS test, human development index, life quality index(health, instruction, and welfare), education quality index, and other scientific-scholarly indexes; finally, by extracting the criteria for the selection and appointment of principals through content analysis and comparison with Iran, the proposed framework for Iran has been presented.Findings: A total of 61 components for the selection of secondary school principals were identified from among the studies conducted in the selected countries in this article. By extracting the commonalities and differences of each of the components among the countries, it was found that the highest index of manager selection and appointment belongs to Japan and the lowest one is related to Finland.Conclusion: There are similarities between the components of selection of principals of secondary schools in Iran and selected countries. In Iran, special attention should be paid to important components such as adherence to religious principles, appropriate personality traits, creativity and innovation, motivation to develop capabilities, professional growth, power of supervision and accountability, social image, leader skills, and purposefulness and foresight.

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نویسندگان: 

اطلاعات دوره: 
  • سال: 

    2020
  • دوره: 

    64
  • شماره: 

    5
  • صفحات: 

    461-464
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    31
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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

بازدید 31

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

EVAN D. | MORRIS R.

اطلاعات دوره: 
  • سال: 

    2006
  • دوره: 

    11
  • شماره: 

    5
  • صفحات: 

    394-417
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    118
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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

بازدید 118

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نویسندگان: 

HODSON RANDY

نشریه: 

WORK AND OCCUPATIONS

اطلاعات دوره: 
  • سال: 

    1999
  • دوره: 

    26
  • شماره: 

    3
  • صفحات: 

    292-323
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    129
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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

بازدید 129

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نویسندگان: 

Rafiee A. | Moradi P. | Ghaderzadeh A.

اطلاعات دوره: 
  • سال: 

    1400
  • دوره: 

    51
  • شماره: 

    4
  • صفحات: 

    443-454
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    187
  • دانلود: 

    37
چکیده: 

Multi-label classification aims at assigning more than one label to each instance. Many real-world multi-label classification tasks are high dimensional, leading to reduced performance of traditional classifiers. Feature selection is a common approach to tackle this issue by choosing prominent features. Multi-label feature selection is an NP-hard approach, and so far, some swarm intelligence-based strategies and have been proposed to find a near optimal solution within a reasonable time. In this paper, a hybrid intelligence algorithm based on the binary algorithm of particle swarm optimization and a novel local search strategy has been proposed to select a set of prominent features. To this aim, features are divided into two categories based on the extension rate and the relationship between the output and the local search strategy to increase the convergence speed. The first group features have more similarity to class and less similarity to other features, and the second is redundant and less relevant features. Accordingly, a local operator is added to the particle swarm optimization algorithm to reduce redundant features and keep relevant ones among each solution. The aim of this operator leads to enhance the convergence speed of the proposed algorithm compared to other algorithms presented in this field. Evaluation of the proposed solution and the proposed statistical test shows that the proposed approach improves different classification criteria of multi-label classification and outperforms other methods in most cases. Also in cases where achieving higher accuracy is more important than time, it is more appropriate to use this method.

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

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اطلاعات دوره: 
  • سال: 

    1393
  • دوره: 

    26
  • شماره: 

    3
  • صفحات: 

    393-400
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    1309
  • دانلود: 

    238
چکیده: 

قارچ ‍ Trichoderma reesei یک میکروارگانیسم سلولولتیک می باشد که به منظور تولید آنزیمهای سلولازی تحت شرایط تخمیر غوطه ور مورد استفاده قرار می گیرد. در این تحقیق، بعد از چندین مرحله جهش با موتاژن شیمیایی NTG و موتاژن فیزیکی uv، از مجموع 6500 کلونی بررسی شده از این قارچ، یک سویه سلولولیتیک کارآمد به نام 2: 6A به دست آمد که حداکثر میزان تولید آنزیم اگزوکلوکاناز توسط این سویه در روز چهارمU/ml  1.26 (130 درصد بیشتر از تیپ وحشی) و حداکثر میزان تولید آنزیم اندوگلوکاناز در روز چهارم 0.82 U/ml (156 درصد بیشتر از تیپ وحشی) بود.

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