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Issue Info: 
  • Year: 

    2016
  • Volume: 

    34
Measures: 
  • Views: 

    137
  • Downloads: 

    54
Abstract: 

IN RECENT YEARS, EXPLORATION AND EXPLOITATION ACTIVITIES HAVE BECOME IMPOSSIBLE TO SOME EXTENT IN MOST PARTS OF IRAN, BECAUSE LOTS OF THEM ARE REGISTERED AND POSSESSED EXPLORATION LICENSES. FORTUNATELY, IN GOVERNMENT RECENT PROGRAMS, AS A NEW GLANCE TO EXPLORATION OF NEW DEPOSIT RESOURCES, SANGAN BLOCK ARE ADOPTED AS LATEST INSIGHT FOR OUR DEPOSITS ESPECIALLY FOR IRON ORES. …

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

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Issue Info: 
  • Year: 

    2020
  • Volume: 

    6
  • Issue: 

    1
  • Pages: 

    8-18
Measures: 
  • Citations: 

    0
  • Views: 

    86
  • Downloads: 

    43
Abstract: 

A DETAILED EXPLORATION of usability statistics and Application Rating on short-range Wireless protocols Bluetooth (IEEE 802. 15. 1), ZigBee (IEEE 802. 15. 4), Wi-Fi (IEEE 802. 11) and NFC (ISO/IEC 14443) has been performed that being representing of those prominent wireless protocols evaluating their main characteristics and performances in terms of some metric such as co-existence, data rate, security, power consumption, joining time are analyzed and presented. Furthermore, considering the file sharing, tag connection, payment method apply and security parameters, usability statistics, application rating and research output is also depicted so that one can easily identify the scope of the protocols, and can visualize the most trending and demandable wireless protocol. A deeply analyzed bar graph illustrates the most demandable wireless protocol. This can be applied in any user's work in the Wireless Network lab and also be implemented in any real-world applications for the appropriate components and devices among the protocols in proper fields.

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Author(s): 

Shirali Esmaeil

Issue Info: 
  • Year: 

    2022
  • Volume: 

    13
  • Issue: 

    1
  • Pages: 

    199-224
Measures: 
  • Citations: 

    0
  • Views: 

    196
  • Downloads: 

    31
Abstract: 

The present research was conducted with the aim of the relationship between social factors and family violence against children (child abuse). The used method was a survey and the data collection tool was also a questionnaire. From a total of 155 families with a history of child abuse based on the social emergency statistics of Tehran in the last 6 months of 1397, 110 families (parents with one or more children) were selected in District 9 of Tehran Municipality. The random sampling method was simple. In the present study, children under 11 years (6-11 years) were defined as the age range of children and family violence was also defined as violence applied by parents, older siblings. Research hypotheses were tested with SPSS statistical software through Pearson's correlation coefficient. The results showed that the experience of violence has a positive relationship with psychological violence, physical violence, neglect against children and family violence against children. In other results, it was found that violence-oriented mentality has a positive relationship with psychological violence, physical violence, neglect against children and family violence against children. In the continuation of the obtained results, the positive relationship of family problems with mental violence, physical violence and neglect against children and family violence against children was confirmed and it was found that gender stereotypes have a positive relationship with mental violence, physical violence and neglect against children and family violence against children. Finally, in the main hypothesis, the results showed: social factors have a positive relationship with psychological violence, physical violence and neglect against children and family violence against children.

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Issue Info: 
  • Year: 

    2012
  • Volume: 

    1
  • Issue: 

    1
  • Pages: 

    46-56
Measures: 
  • Citations: 

    0
  • Views: 

    1701
  • Downloads: 

    0
Abstract: 

Partial discharge is a main source of insulation degradation in power transformers. Therefore accurately locating of partial discharge sources in transformers as the main equipment in power system is needed. This paper proposed two novel methods based on artificial neural networks for partial discharge localization in the power transformers. For this purpose DETAILED MODEL of transformer and three capacitor MODEL of partial discharge is used. Then impulse test is applied to transformer terminals and current in neutral point is measured for training and test of artificial neural networks. As actual current signals include noise components, the noisy component is added to measured current signals and performance of proposed neural networks for partial discharge localization is shown and results are compared.

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Issue Info: 
  • Year: 

    2019
  • Volume: 

    12
  • Issue: 

    24
  • Pages: 

    14-25
Measures: 
  • Citations: 

    0
  • Views: 

    1067
  • Downloads: 

    0
Abstract: 

The Tajar feldspar deposit is located at 15 km southwest of Malayer city, 4 km northwest of Samen city, in the Hamedan province and west of Iran. Study area is located in the north part of the Sanandaj-Sirjan geological zone. DETAILED EXPLORATION activities carried out for determining of geometrical data of mineralized zones. Indeed, according to the morphological and geometrical data of deposit, the rectangular EXPLORATION grid was designed and 45 exploratory boreholes (520 meters total depth) were drilled. Furthermore, for determining of shape and dimension of mineral deposit, lithological columns of mineral deposit and host rocks were designed. Then by providing their geological profiles, at first the volumes that enclosed between each section was calculated and eventually the mineral deposits was determined. Detail EXPLORATION results show that the Tajar feldspar deposit have 99286 m3 volume and 258145 tons deposit. Tajar feldspar deposit is sodic type and their mineral composition is oligoclase to albite.

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Author(s): 

AHMADI REZA

Issue Info: 
  • Year: 

    2020
  • Volume: 

    10
  • Issue: 

    2
  • Pages: 

    121-136
Measures: 
  • Citations: 

    0
  • Views: 

    365
  • Downloads: 

    231
Abstract: 

1-Introduction One of the essential requirements in the all stages of an EXPLORATION operation for deposits is the precise locating the EXPLORATION works or design of the EXPLORATION grid. In general, the arrangement of EXPLORATION works is called the EXPLORATION grid. The EXPLORATION grid has the variety of types that the type, shape and dimensions of the grid depend on the geological conditions and characteristics of the deposit (Ahmadi, 2005). Today, issues related to mineral EXPLORATION and design of EXPLORATION grids require the extensive use of all sciences, especially new sciences, fast, accurate and intelligent techniques (Smirnoff et al., 2008). In the present research, designing EXPLORATION grid has been carried out for Khomein-Robat Pb-Zn deposit as a worthwhile small-scale metallic deposit. The Robat Pb-Zn deposit is located in 32 km west of Khomein city, 10 km northwest of Ghourchi Bashi town and 2 km south of Robat-e-Paeen village. The studied region comprises three mineralized areas called Arregijeh, Takhte-Hossein and Baraftab where Takhte-Hossein and Baraftab are adjacent to each other. From structurally view point, the study area is located in the Sanandaj-Sirjan metamorphic zone and consists of Cretaceous carbonate-clastic cover over the old metamorphic complex. This region, in terms of mineralization, especially the presence of Pb-Zn minerals, is a part of the Malayer-Isfahan mineralization strip (Pichab kansar, 2009). According to the geological conditions of the deposit, the type and amount of available exploratory information (assay data of trenches, test pits, outcrops, semi-deep and deep boreholes) statistical and geostatistical methods have been used to design systematic EXPLORATION grid for Arregijeh region...

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Journal: 

AMIRKABIR

Issue Info: 
  • Year: 

    2006
  • Volume: 

    16
  • Issue: 

    63-E
  • Pages: 

    25-34
Measures: 
  • Citations: 

    0
  • Views: 

    1061
  • Downloads: 

    0
Abstract: 

Transient analysis of power network for insulation coordination is essential in both design and utility engineering fields. Accuracy MODELing of equipment behavior in network simulation can effect on this study: Transformers are one of important equipment which has been developed in simulation software recently.Transformer manufacturers use DETAILED MODEL for insulation coordination of windings, while terminal MODEL of transformer is interested for utility engineers in simulation of global network analysis. Order reduced MODEL of DETAILED MODEL can be used in this purpose.In this paper, transformer DETAILED MODEL is used as a start point to achievement of accurate order reduced MODEL. A number of order reduction methods have been applied to reference MODEL and appropriate algorithm has been selected considering of simulation limits. Result MODEL can be used in power network simulation simultaneously with other equipment easily. This MODEL shows transient properties of network analysis as well as DETAILED MODEL.

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Author(s): 

SOROUSH ABOUZAR

Issue Info: 
  • Year: 

    2012
  • Volume: 

    1
  • Issue: 

    1 (1)
  • Pages: 

    151-171
Measures: 
  • Citations: 

    0
  • Views: 

    1292
  • Downloads: 

    0
Abstract: 

As the most perfect divine religion, the holy Islam contains comprehensively complete programs leading human-being to prosperity and salvation. One of the recommendations highly emphasized in the religion of Islam is charitable endowment. Though being not compulsory, endowment is highly advised in the religion and has a well-deserved role in elevating our souls and providing spirituality for the whole community. Many people are interested in giving endowments; however, it is not possible for all to do so, especially when the endowed object is a building, school, etc, because such things require the person to undergo a huge cost, which is not possible for everybody.U sing the suggestions proposed regarding the expansion and diversity of financial tools, the present article is intended to offer a MODEL that solves the above-mentioned problem. In addition to absorbing small capital of individuals, the distribution of endowment papers will also lead to the promotion of endowment culture. Such papers are non-for-profit, and the owner, after earning the property, finds the possibility to endow it. Hence, in addition to examining the foundations effective on the process of distributing endowment papers, the present essay is also intended to present the financial MODEL related to such papers.

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Author(s): 

JAFARMADAR S.

Issue Info: 
  • Year: 

    2012
  • Volume: 

    25
  • Issue: 

    3 (TRANSACTIONS C: ASPECTS)
  • Pages: 

    239-247
Measures: 
  • Citations: 

    0
  • Views: 

    335
  • Downloads: 

    130
Abstract: 

Energy and exergy concepts come from thermodynamics laws and are applicable to all fields of science and engineering. This study considers numerical simulations of combustion of hydrogen with air in a constant pressure environment and exergy terms according to first and second laws analysis using homemade code. Chemical kinetic MODEL includes 20 reactions and 9 species. At the first stage of present study, the effects of airl-fuel ratio (j) on energy and exergy terms are investigated for different j (from 0.6 to 1.4) at constant temperature 1000 (K). The predictions show that the increase of j from 0.6 to 1 increases average temperature, thermo-mechanical and chemical exergys and ireversibilty, while increase of j from 1 to 1.4 decreases them, except for chemical and total exergys. Also secondlaw efficiency increases with increasing of j. At the second stage, at j=1.4, in which the second-law efficiency is maximum, initial temperature of mixture (T) is varied from1000 to 1400 (K) by 100 (K) step. The predictions show that increase of T from 1000 to 1100 (K) increases average temperature, thermomechanical, total exergy and irreversibility while decreases the chemical exergy and second-law efficiency. Also, the increase of T from 1100 to 1400 (K) increases the thermo-mechanical, chemical total exergys and second-law efficiency, while irreversibility decreases. It was found that second-law efficiency reaches a maximum value in the case of higher airl-fuel ratio and initial temperature.

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Author(s): 

Issue Info: 
  • Year: 

    2022
  • Volume: 

    47
  • Issue: 

    -
  • Pages: 

    613-621
Measures: 
  • Citations: 

    1
  • Views: 

    28
  • Downloads: 

    0
Keywords: 
Abstract: 

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

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