Involving Defensive Approach in Unit Commitment Scheduling and Presenting Probability Model of Plants Inaccessibility
Reza
Ghaffarpour
دانشگاه جامع امام حسین(ع)
author
Yashar
Hashemi
دانشگاه محقق اردبیلی
author
Mahdi
Ehsan
دانشگاه صنعتی شریف
author
text
article
2019
per
In this paper, robust unit commitment with defensive viewpoint and probability model of plants inaccessibility have been surveyed. From strategic and military viewpoint, due to the possibility of a military attack, the electrical energy operation depends on arrangements codification and utilization of effective planning in the production part. In a sample power network, because of the variable possibility of attack, some plants have different probability of inaccessibility. Thus, technique of identification and weight assignment has been employed to find sensitive power plants. In the proposed scheme, random contingencies, including sudden unit outage due to military attacks have been considered with scenarios taking into account the probability of their occurrence. In this paper, probability values of plants inaccessibility have been extracted by presenting a comprehensive model. The proposed method has been implemented on IEEE standard 30 bus system. Comparative analysis results indicate that to reach a secure plan, preserving an optimal production level from power plants to maintain feeding continuity is inevitable.
Journal of Advanced Defense Science & Technology
Imam Hussein University
2676-2935
5
v.
4
no.
2019
231
246
https://adst.ihu.ac.ir/article_204135_25951632dafbb425d9911083031b1308.pdf
Prediction of UXOâs Penetration Depth Using Numerical Simulation Bomb Trajectory with Case Study
hassan
radmard
دانشگاه افسری امام حسین (ع)
author
hossein
khodarahmi
دانشگاه جامع امام حسین
author
hesam aldin
ebnodin hamidi
دانشگاه جامع امام حسین
author
text
article
2019
per
About a quarter of a century has passed since the IRAK-IRAN war but unfortunately, some areas of the country still
remains contaminated by mines and unexploded bombs and sometimes irreparable damage is inflicted. Due to the
limitation of magnetic mine detectors, penetration depth should be estimated with reasonable accuracy. In this paper,
the mathematical model of the bomb motion in the air and soil is written. The bomb motion is simulated based on TM
and military handbook with MATLAB. Then UXO penetration depth in Azadegan oilfield was Investigated as a case
study and simulation results are compared with MIZUHO results. The effect of the bomb angle of attack in the
penetration depth is also determined. Finally, regarding all effectives parameters, the correct depth is estimated and
invalidity of MIZUHO results is shown. Subsequent excavations carried out in the field and non-observation of UXO in
more than six meters deep proved obtained results.
Journal of Advanced Defense Science & Technology
Imam Hussein University
2676-2935
5
v.
4
no.
2019
247
256
https://adst.ihu.ac.ir/article_204136_a1548613e31362d70619084b38a03be8.pdf
A New Image Encryption Method with Hybrid and Reversible Cellular Automata
zeinab
mehrnahad
رمزنگاری
author
mohammad
latif
author
text
article
2019
per
Cryptography is one of the most important ways of information security in passive defence. In this paper, a new image
encryption method using reversible and hybrid cellular automata is presented. Since four most significant bits of
each pixel have main information of an image, a hybrid cellular automata encrypts this bitst. Then, a reversible cellular
automata are applied to whole of the pixels and finally, cellular automata scrambles the image bits. Using a series of
standard tests, the suggested method was compared with some other methods to assess the efficiency of the algorithm.
The experimental results show that the suggested algorithm has satisfactory performance in terms of quantitative
assessment from some other schemes.
Journal of Advanced Defense Science & Technology
Imam Hussein University
2676-2935
5
v.
4
no.
2019
257
267
https://adst.ihu.ac.ir/article_204137_c700502ff8208b85bf7179f4171e6800.pdf
A Comparative Investigation of the Toxic Materials Adsorbent Filters Based on Activated Carbon-Impregnated Polyurethane Foam Lining or Laminated Carbon Fiber
Mohammad Reza
khoshroo
فیلتراسیون آلاینده های سمی و حفاظت و رفع آلودگی آنها
author
Hassan
Hosseini-Monfared
author
Bozorgmehr
Maddah
author
text
article
2019
per
Filtration of toxic materials were examine by two different laminated filterazied fabrics consisted of activated carbon
polyurethane foam and carbon fabric laminated at the same conditions. Functionalized characteristics of two samples
such as weight, thickness, force tearing, bending, active carbon collapsing, air permeability and absorbed dose of toxic
simulant, i.e. 1,3-dichloropropane in vapor/vapor and liquid/vapor phases according to the standard methods were
investigated. The obtained results indicated that capability and efficiency of carbon fabric laminated has advantage
over the activated carbon polyurethane foam, also it is more suitable to be used in sealed area.
Journal of Advanced Defense Science & Technology
Imam Hussein University
2676-2935
5
v.
4
no.
2019
269
275
https://adst.ihu.ac.ir/article_204138_6fd987fa0150058d9fe35c27060e59b3.pdf
Modeling the Reliability of Electric Power of an Energy Hub Considering Critical Situation
Habib Allah
Aalami
دانشگاه امام حسین (ع)
author
text
article
2019
per
With the development of energy converters and storages, the issue of multi-carrier energy hubs has been considered. At
these hubs, various forms of energy such as electricity, gas and heat can be converted to one another through the
converters. Given the substitution possibility of different forms of energy, reduce the cost and increase reliability of
power supply system, which are the main advantage of energy hubs. In this paper, an energy hub including multiple
sensitive loads is considered and reliability of its energy systems is modeled using Markov Chain and sequential Monte
Carlo. In the proposed model, a method is presented for modeling failure rates in critical situations. The proposed
model can be employed in planning studies to evaluate the adequacy of power supply system and using it, the
appropriate capacity of each of the system components can be evaluated. Finally, simulation results of the proposed
model on a test system are presented.
Journal of Advanced Defense Science & Technology
Imam Hussein University
2676-2935
5
v.
4
no.
2019
277
285
https://adst.ihu.ac.ir/article_204139_a3eaf5d4fe0dfa0f58d5e91444831b84.pdf
Cryptanalysis and Improvement of a New Chaotic Image Encryption Scheme
بهروز
خادم
دانشکده فاوا-گروه رمز و امنیت
author
مهدی
پازوکی
author
بهزاد
علیزاده
author
text
article
2019
per
A chaotic image encryption scheme has presented in [A. Mir Ghadri, A. Jolfai, Jour. of Passive Defense Science and Technology, 2nd Year, No. 2, Summer1390]. We introduce a linear and differential attack to this scheme and show other weaknesses as well. These weaknesses contains weak chaotic maps and using weak keys that would simplify the scheme by the adversary. In this paper we propose to improve the scheme, we present a complete simulation which shows the security and performance improvement related to the original scheme.
Journal of Advanced Defense Science & Technology
Imam Hussein University
2676-2935
5
v.
4
no.
2019
296
287
https://adst.ihu.ac.ir/article_204140_1071450b82e99739ff22c2f5e6f54dca.pdf
Experimental investigation of thermal characteristics of Ultra high performance concrete
Ghasem
Dehghani Ashkezari
دانشگاه صنعتی مالک اشتر
author
M.Hossein
Jabbarkhani
دانشگاه صنعتی مالک اشتر
author
text
article
2019
per
In the recent years, development in concrete technology results in production of ultrahigh performance fibre concrete. Having more than 150 MPa compressive strength and ductile behavior are two main characteristics of this concrete. Concrete structures experience different thermal conditions during their age and these conditions have direct influences on mechanical properties and durability of concrete. These effects can be natural atmospheric temperature difference or manmade conditions like fire. So investigation of temperature effects on concrete specially ultrahigh performance concrete which is expected to have high strength, is very important. In this research thermal characteristics of an ultrahigh performance concrete reinforced with steel fibres is investigated through calculating thermal expansion coefficient and resistance against high temperature. thermal expansion coefficient of ultrahigh performance fibre concrete is higher than high performance concrete and normal concrete. In high temperature experiment, in wet specimens, by increasing the temperature to 400 ºC the strength of specimens decreased. In dry specimens, ultrahigh performance concrete is more sensitive to temperature increase than high performance concrete.
Journal of Advanced Defense Science & Technology
Imam Hussein University
2676-2935
5
v.
4
no.
2019
297
305
https://adst.ihu.ac.ir/article_204141_d208389f0ab931f7fa830d1e000fabe1.pdf