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Issue Info: 
  • Year: 

    2024
  • Volume: 

    21
  • Issue: 

    4
  • Pages: 

    242-252
Measures: 
  • Citations: 

    0
  • Views: 

    136
  • Downloads: 

    19
Abstract: 

The rise of Software-Defined Networking (SDN) has revolutionized network management, offering greater flexibility and programmability. However, ensuring the accuracy of packet forwarding remains paramount for maintaining network reliability and security in SDN environments. Unlike traditional IP networks, SDN separates the control plane from the data plane, creating new challenges for securing data transmission. Existing verification methods designed for IP networks often cannot be directly applied to SDN due to this architectural difference. To address the limitations of existing verification methods in SDN networks, new approaches are necessary. This research proposes a novel parallel method for verifying packet forwarding, building upon concepts from DYNAPFV. The proposed approach aims to overcome specific limitations of existing methods (including DYNAPFV), such as scalability issues, slow verification times. Simulations demonstrate significant improvements compared to DYNAPFV. The proposed parallel method achieves a 92% reduction in time required to identify malicious nodes within the network. The results also reveal a trade-off between security and verification time. As the probability of packet integrity confirmation increases from 0. 8 to 0. 99, system security strengthens, but the time to detect malicious switches also increases.

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

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Writer: 

BAYAT HASSAN

Issue Info: 
  • Year: 

    2014
  • Volume: 

    12
Measures: 
  • Views: 

    183
  • Downloads: 

    61
Keywords: 
Abstract: 

VALIDATION: BEFORE USING A NEW METHOD TO ASSAY PATIENT’S SAMPLES, THE METHOD MUST BE VALIDATED; MEANING THAT THE METHOD’S PERFORMANCE MUST BE EVALUATED TO GET SURE THE METHOD COULD ADDRESS THE CLINICALLY NEEDEDQUALITY STANDARDS.PERFORMANCE SPECIFICATIONS TO BE VALIDATED INCLUDE: - LINEARITY/UPPER LIMIT OF THE ASSAY, -VARIATION, -…

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

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Author(s): 

AFRA BAHRAM | GRAILU HADI

Issue Info: 
  • Year: 

    2018
  • Volume: 

    4
  • Issue: 

    2
  • Pages: 

    59-73
Measures: 
  • Citations: 

    0
  • Views: 

    1797
  • Downloads: 

    0
Abstract: 

Signature is one of the personal identification methods. In this paper we have proposed a signature identification approach which is based on using dynamic information of signature video. It composes of four stages. First, the foreground image is extracted. Second the signature shape is obtained by detecting and tracking the pen tip in each frame. The pen tip detection error rate is decreased using a proposed modification. Third, some features based on energy motion image are calculated. At the last stage, the signature model is formed which is used in signature identification procedure.We have generated a signature video database of 50 persons to evaluate the proposed method. The number of 13 signatures of each person are used for training. In addition 8 genuine and 8 fake signatures are used for testing purposes. The Accuracy and Equal Error Rate measures areobtained as 95.02% and 3.8% respectively.

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

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Issue Info: 
  • Year: 

    1390
  • Volume: 

    1
Measures: 
  • Views: 

    400
  • Downloads: 

    0
Abstract: 

در این تحقیق به منظور انتخاب بهترین الگوریتم برای طبقه بندی تصاویر ETM+ ماهواره لندست و تهیه نقشه جنگل در جنگل های آرمرده بانه سه الگوریتم Minimum Distance،  Maximum Liklihoodو parallel epiped مورد بررسی قرار گرفتند. در این تحقیق از نسبت گیری های طیفی استفاده و باندهای مصنوعی مختلفی تهیه شدند. سپس مجموعه های باندی بدست آمده با استفاده از 3 الگوریتم ذکر شده طبقه بندی شدند. پس از عمل طبقه بندی به ارزیابی صحت نتایج با استفاده از ضریب های صحت کلی و ضریب کاپا، مقادیر صحت تولید کننده، صحت کاربر و خطای Ommission و Commission پرداخته شد. نتایج تحقیق نشان داد که الگوریتم Maximum Liklihood دارای بالاترین صحت برای طبقه بندی تصاویر ماهواره ای و تهیه نقشه جنگل می باشد.

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

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    5
  • Issue: 

    1
  • Pages: 

    37-53
Measures: 
  • Citations: 

    0
  • Views: 

    499
  • Downloads: 

    118
Abstract: 

In this paper, a new broadcast encryption scheme is presented based on threshold secret sharing and secure multiparty computation. This scheme is maintained to be dynamic in that a broadcaster can broadcast a message to any of the dynamic groups of users in the system and it is also fair in the sense that no cheater is able to gain an unfair advantage over other users. Another important feature of our scheme is collusion resistance. Using secure multiparty computation, a traitor needsk cooperators in order to create a decryption machine. The broadcaster can choose the value of k as he decides to make a trade-o between communication complexity and collusion resistance. Comparison with other Broadcast Encryption schemes indicates enhanced performance and complexity on the part of the proposed scheme (in terms of message encryption and decryption, key storage requirements, and ciphertext size) relative to similar schemes. In addition, the scheme is modeled using applied pi calculus and its security is verified by means of an automated verification tool, i.e., ProVerif.

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

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Author(s): 

MUNTEANU D.P. | TOMA S.A.

Issue Info: 
  • Year: 

    2010
  • Volume: 

    -
  • Issue: 

    8
  • Pages: 

    107-110
Measures: 
  • Citations: 

    1
  • Views: 

    172
  • 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): 

MACHLUP F.

Issue Info: 
  • Year: 

    1955
  • Volume: 

    22
  • Issue: 

    -
  • Pages: 

    1-21
Measures: 
  • Citations: 

    1
  • Views: 

    92
  • Downloads: 

    0
Keywords: 
Abstract: 

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

View 92

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Author(s): 

POURHOSSEIN R.

Issue Info: 
  • Year: 

    2014
  • Volume: 

    8
  • Issue: 

    -
  • Pages: 

    27-38
Measures: 
  • Citations: 

    1
  • Views: 

    261
  • Downloads: 

    0
Keywords: 
Abstract: 

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

View 261

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Author(s): 

BAKHTIYARI MEHDI

Issue Info: 
  • Year: 

    2011
  • Volume: 

    2
  • Issue: 

    8
  • Pages: 

    199-215
Measures: 
  • Citations: 

    0
  • Views: 

    1689
  • Downloads: 

    0
Abstract: 

The purpuse of this essay is that scrutiny semblance of ancient myths of iran and comparison of those. The author mentions his theory about to how start of myths then he conclude the relation between myth and philosophy. In continue he scrutiny of most important similes between persian myths and adventures of prophets and unmerciful kings which mention in holy books. For example similes between siavoosh and abraham.The most important conclude of these essay is reletions between myths and historical adventures or between two diffrent myths and how efficacy of those.

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

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Writer: 

Issue Info: 
  • End Date: 

    1400/09/09
Measures: 
  • Citations: 

    0
  • Views: 

    90
  • Downloads: 

    0
Keywords: 
Abstract: 

According to the provisions of Article (7) of the Law on "Strategic Action to remove Sanctions and Protect Iranian Nation's interests," as well as the definite policy of the Islamic Republic of Iran, the verification of the removal of sanctions and its subsequent benefits for Iran's economy should be the inevitable demand of the foreign policy apparatus in any negotiation process. In other words, the removal of Iran sanctions, regardless of the realization of the legal aspects of removing sanctions (removal of sanctions on paper), should provide tangible benefits for Iran's economy due to the removed sanctions. Regarding the thirteenth government coming to power, the following report as a comprehensive guideline can play an essential role in advancing verification if the new government seriously considers the issue of verification. verification has two main factors: "monitoring guideline" and "monitoring organization." verification is a continuous activity in which a monitoring organization evaluates the other participant's compliance to the agreement's provisions based on objective indicators and criteria related to the type of obligations. Therefore, three essential requirements must be considered in determining the verification process: first, developing a comprehensive, operational, and measurable guideline. Second, determining the unique features for the first stage of verification. Third, determining the quality and aspects of periodic verification. In this report, the three main topics are proposed to meet the mentioned three requirements, which will be presented as follows: A) The verification authority can be a beyond the parliament-approved powers organization such as the Supreme National Security Council or the Iranian Supervisory Committee on Joint Comprehensive Plan of Action (JCPOA) or even a newly established body with a professional expertise structure and a permanent secretariat. This authority has the responsibility to compose periodic reports on the verification of the removal of sanctions to decide whether Iran should continue to comply with the agreement or take countermeasure in the form of reducing or suspending its commitments. This authority has three crucial tasks: 1. Monitoring and analyzing the benefits of Iran's economy due to removed sanctions, 2. Receiving complaint letter from an Iranian citizen or institution (especially those individuals and entities that have been removed from the sanctions list) about the "Violation of JCPOA or the impossibility of deriving benefit from the removed sanctions"; 3. Develop a regulation for countermeasures. This includes but is not limited to implementing its provisions in proportion to the other participants' non-compliance by introducing a regulation that mandates suspending, stopping, or reducing nuclear activity limitations as countermeasures. B) Providing a verification checklist of removing sanctions and permission to resume nuclear-related measures based on JCPOA for the first stage of verification: The provisions of the proposed checklist of verification of removing sanctions are presented in two parts: • Factors of the actual removal of sanctions: it includes realizing the minimum thresholds for oil sales and transactions with German EIH and Bank Tejarat branch of Paris, revoking US President's executive orders, reviewing the related FAQ's of the OFAC website, avoiding issuing warning notices, and issuing specific and general Licences for foreign individuals and legal entities who want to cooperate with Iran's economy. • factors of reducing the risk of economic cooperation with Iran: The criteria of this topic are the acceptance of legal commitment and the adoption of practical measures by the leaders of the other participant countries on the normalization of trade and economic relationships with Iran, that include: - Revoking executive orders and other regulations, continuing the issuance of the certification of Iran compliance to JCPOA, eliminating instructions and advisories introducing the Iranian economy as a jurisdiction with a high risk of money laundering, and issuing orders or approving regulations that are necessary measures for normalizing trade relationships with Iran. - Avoiding any negative comments or actions discouraging nations from cooperating with Iran and acknowledging the possibility of establishing medium and long-term cooperation with Iran's economy. - Altering the approach of Financial Crimes Executive Network (FinCEN) of United States Department of the Treasury from Risk-Based to Rule-Based. - Removing Iranian Individuals, entities, vessels, and aircraft from the sanctions lists and fundamentally revising the SDN and non-SDN lists. - Eliminating warning instructions and advisories from OFAC and other US agencies on humanitarian goods trade and maritime trade with Iran. C) Checklist of Continuity of benefits from removed sanctions and issuance of periodic licenses to allow Iran to continue the implementation of JCPOA (Periodic verification): on the issue of Continuity of verification, it is recommended that the process of deriving benefit should be verified continuously and to publish the reports of this verification every three months. The threshold for the first part of continuous verification is 2.5 million barrels per day export of oil and condensate, monthly transactions of Iranian individuals and entities with the EIH Bank in Germany and the Paris branch of Tejarat bank worth at least $ 4.2 and $ 1.5 billion respectively. In addition, the normalization of trade and international cooperation with the sanctioned sectors of Iran's economy is considered the basis for continuing the verification. The proposed mechanism for examining the normalization of relationships with each economic sector can be described as follows: the verification authority receives quarterly feedback from prominent governmental and non-governmental actors in each sector based on the dimensions introduced. Then based on those feedbacks, the verification authority will recommend whether to comply with the commitments or to reduce, suspend or cease Iran's actions as countermeasures. In fact, the verification authority should report to the main decision-making organization about JCPOA (which is currently the Supreme National Security Council and the Iranian Supervisory Committee on JCPOA). According to paragraph 36 of the JCPOA, Iran has the right to reconsider compliance to its commitments based on the domestic approved arrangements in the case of a violation of the JCPOA by other participants. However, taking these countermeasures does not prevent Iran from sending verification reports to the Joint Commission of the JCPOA as an international organization to convince foreign participants.

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

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