Volume 56 (2024)
Volume 55 (2023)
Volume 54 (2022)
Volume 53 (2021)
Volume 52 (2020)
Volume 51 (2019)
Volume 50 (2018)
Volume 49 (2017)
Volume 48 (2016)
Volume 47 (2016)
Volume 46 (2015)
Volume 45 (2014)
Volume 44 (2013)
Volume 43 (2009)
Volume 41 (2007)
تولید خودکار الگوهای نفوذ جدید با استفاده از طبقه‌بندهای تک کلاسی و روش‌های یادگیری استقرایی

Mehdi Abadi; Sa'eed Jalili

Volume 42, Issue 7 , January 2009, Pages 823-829

https://doi.org/10.22059/jac.2013.7803

Abstract
  In this paper, we propose an approach for automatic generation of novel intrusion signatures. This approach can be used in the signature-based Network Intrusion Detection Systems (NIDSs) and for the automation of the process of intrusion detection in these systems. In the proposed approach, first, by ...  Read More

ارائه الگوریتم حذف بار وفقی جهت حفاظت سیستم قدرت در مقابل حوادث ترکیبی منجر به خاموشی سراسری

Hirosh Seyyedi; Majid Sanaye Pasand

Volume 42, Issue 7 , January 2009, Pages 863-878

https://doi.org/10.22059/jac.2013.7807

Abstract
  In recent years several catastrophic power systems blackouts have occurred worldwide. Various reasons have been declared for these failures. Economical limitations due to power system restructuring restrictions, inadvertent operation of protective relays and inefficient design of conventional load shedding ...  Read More

کاربرد روش معادله سهموی در تحلیل مسائل انتشار امواج داخل ساختمان

Homayoun Oraizi; Narges Nouri

Volume 42, Issue 7 , January 2009, Pages 879-890

https://doi.org/10.22059/jac.2013.7808

Abstract
  With the rapid growth of indoor wireless communication systems, the need to accurately model radio wave propagation inside the building environments has increased. Many site-specific methods have been proposed for modeling indoor radio channels. Among these methods, the ray tracing algorithm and the ...  Read More

ارزیابی کارآیی TCSCدرکاهش اضافه بار خطوط و پایداری ولتاژ درهنگام وقوع خطا

Mehrdad Tarafdar Hagh; Seyyed Jalal Kazempour

Volume 42, Issue 7 , January 2009, Pages 891-899

https://doi.org/10.22059/jac.2013.7809

Abstract
  Although many mathematics-based and heuristic approaches have been recently developed on optimally allocation of TCSCs for lines overloads reduction and buses voltage stability enhancement during fault conditions, the works on the TCSCs efficiency to achieve the abovementioned goals are rare. This idea ...  Read More

حذف هارمونیک های انتخابی مراتب بالا در مبدل های چندسطحی با استفاده از الگوریتم مهاجرت پرندگان

Hassan Taghizadeh; Mehrdad Tarafdar Hagh

Volume 42, Issue 7 , January 2009, Pages 901-912

https://doi.org/10.22059/jac.2013.7810

Abstract
  This paper presents a new method to find the optimum switching angles in voltage source multilevel converters in order to minimize specific higher order harmonics and decrease the total harmonic distortion (THD) of their output voltage waveform. The output voltage waveform of inverter can either be in ...  Read More

معرفی روش تطبیقی اصلاح شده برای اندازه‌گیری دقیق ولتاژ در مبدل ولتاژ نوری

Hassan Monsef; Taher Ghomian

Volume 42, Issue 7 , January 2009, Pages 913-922

https://doi.org/10.22059/jac.2013.7811

Abstract
  There are fewer problems encountered with optical voltage transducers in comparison with their inductive and capacitive counterparts. Although capacitive and inductive transformers are used vastly for the purpose of measurement and protection in the networks, they cause problems such as core saturation ...  Read More

حل مسئله زمان بندی ماشینهای موازی نامرتبط با اهداف کل زودکرد وزنی و کل دیرکرد وزنی با استفاده از الگوریتم جستجوی پراکنده چند هدفه

Reza Tavakoli Moghadam; Fariborz Jolai; Somayyeh Ghandi Beygi

Volume 42, Issue 7 , January 2009, Pages 923-934

https://doi.org/10.22059/jac.2013.7812

Abstract
  The parallel machine scheduling problem is an important and difficult problem to be considered in the real-world situations. Traditionally, this problem consists of the scheduling of a set of independent jobs on parallel machines with the aim of minimizing the maximum job completion. In today's manufacturing ...  Read More