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Author(s): 

MORSI S.A. | ALEXANDER A.J.

Issue Info: 
  • Year: 

    1972
  • Volume: 

    55
  • Issue: 

    2
  • Pages: 

    193-208
Measures: 
  • Citations: 

    1
  • Views: 

    192
  • Downloads: 

    0
Keywords: 
Abstract: 

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

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Issue Info: 
  • Year: 

    2023
  • Volume: 

    17
  • Issue: 

    45
  • Pages: 

    203-214
Measures: 
  • Citations: 

    0
  • Views: 

    154
  • Downloads: 

    37
Abstract: 

There are two approaches for simulating memory as well as learning in artificial intelligence; the functionalistic approach and the cognitive approach. The necessary condition to put the second approach into account is to provide a MODEL of brain activity that contains a quite good congruence with observational facts such as mistakes and forgotten experiences. Given that human memory has a solid core that includes the components of our identity, our family and our hometown, the major and determinative events of our lives, and the countless repeated and accepted facts of our culture, the more we go to the peripheral spots the data becomes flimsier and more easily exposed to oblivion. It was essential to propose a MODEL in which the topographical differences are quite distinguishable. In our proposed MODEL, we have translated this topographical situation into quantities, which are attributed to the nodes. The result is an edge-weighted graph with mass-based values on the nodes which demonstrates the importance of each atomic proposition, as a truth, for an intelligent being. Furthermore, it DYNAMICally develops and modifies, and in successive phases, it changes the mass of the nodes and weight of the edges depending on gathered inputs from the environment.

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

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Issue Info: 
  • Year: 

    2001
  • Volume: 

    -
  • Issue: 

    -
  • Pages: 

    91-102
Measures: 
  • Citations: 

    1
  • Views: 

    117
  • Downloads: 

    0
Keywords: 
Abstract: 

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

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Issue Info: 
  • Year: 

    2017
  • Volume: 

    8
  • Issue: 

    1
  • Pages: 

    1-8
Measures: 
  • Citations: 

    0
  • Views: 

    348
  • Downloads: 

    151
Abstract: 

In this study, the thermal characteristics of an individual room in a building are measured by making use of environmental data. Subsequently, the target heat capacity consumption by the air-conditioning system can be calculated and controlled, depending on the environmental target. By establishing the relationship between a change in the room environment (environmental evaluation index) and the heat capacity consumption of the room (the amount of change of the enthalpy) by the air conditioning, we can calculate the target heat capacity consumption feasible as an environmental target. Relying on an environmental target in calculating the target heat capacity consumption enables setting suitable targets to avert the risk of heat exhaustion or even heatstroke to the residents of the building. In addition, a useful room heat capacity MODEL is suggested that includes a management method using a heat capacity consumption target, with an administration table for evaluating the target.

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: 

    4
  • Issue: 

    14
  • Pages: 

    13-18
Measures: 
  • Citations: 

    0
  • Views: 

    1299
  • Downloads: 

    0
Abstract: 

Due to the lack of measurements in many regions, wave characteristics are estimated using different methods. Wave climate hindcasting/forecasting is mostly conducted by numerical MODELs or empirical methods. Until now, different empirical methods have been developed for wave hindcasting. However, with the development of high speed processors, several sophisticated numerical MODELs have been developed for wave prediction. These MODELs are mostly phase-averaged spectral wave MODELs developed in three generations. In the last two decades, third generation wave MODELs have been used widely in academic and practical projects. In this regard, Port and Maritime Organization has produced his own MODEL, PMO DYNAMIC. This MODEL has been developed as a part of first three phases of Monitoring and MODELing of Study of Iranian Coasts project. PMO DYNAMIC package is a software available for engineering purposes. It has several modules that have been developed for different objectives. Wave MODEL is the module which is used for the generation and transformation of wind waves in coastal areas. In this paper, in order to test the PMO DYNAMIC MODEL capabilities, it has been applied for the prediction of wave parameters in Bushehr Bay and the results have been compared with MIKE21 SW MODEL and measured data.

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

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Issue Info: 
  • Year: 

    2015
  • Volume: 

    45
  • Issue: 

    2
  • Pages: 

    161-167
Measures: 
  • Citations: 

    1
  • Views: 

    1322
  • Downloads: 

    0
Abstract: 

The basis of the Ohmic Heating process is the transmission of alternating electric current through multi-phase solutions that is followed by heat generation due to particle resistance to the transmitted electric current. Throughout the present study, simultaneous transfer of heat and electricity was MODELed in a TWO-PHASE system of solid-liquid food to investigate the critical factors affecting the process. A three-dimensional simulation was employed in the MODELing to investigate the effect of particle distribution, salt diffusion as well as electrical conductivity. The results revealed that there existed a good agreement between the results of the MODELing with the experimental results. It was also revealed that with increase in the concentration of salts and electrical conductivity, heating rate increased. In total, it can be concluded that heat and electricity diffusion throughout the product is faster than that in conventional heating methods and proceed similarly and almost with equal speed in both liquid and solid phases.

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

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Issue Info: 
  • Year: 

    2007
  • Volume: 

    9
  • Issue: 

    1
  • Pages: 

    12-16
Measures: 
  • Citations: 

    1
  • Views: 

    113
  • Downloads: 

    0
Keywords: 
Abstract: 

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

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Issue Info: 
  • Year: 

    2016
  • Volume: 

    34
  • Issue: 

    395
  • Pages: 

    952-957
Measures: 
  • Citations: 

    0
  • Views: 

    2958
  • Downloads: 

    0
Abstract: 

Background: In intertrochanteric fractures، DYNAMIC hip screw (DHS) is the most frequently used tool، but several studies did not give good results for this device in reverse-oblique and transverse fractures. Current study aimed to compare fixation results of reverse-oblique intertrochanteric and short-segment subtrochanteric fractures using DYNAMIC condylar screw (DCS) and DHS in patients referred to Alzahra and Kashani Hospitals in Isfahan, Iran.Methods: In a cross-sectional study، medical files of the patients referred to emergency units of the two hospitals who were diagnosed with intertrochanteric or subtrochanteric fractures and underwent DHS or DCS surgery more than 6 months before were assessed; they were invited for follow-up visit and examination. Written consent forms were taken from all the patients upon their entry; and they were examined in terms of complications including nonunion and failure of device and level of fracture improvement. These cases were evaluated by simple radiography ,too. Results obtained from examination of patients in addition to demographic information were recorded in the data collection form for each patient.Findings: Perfect union was observed in 14 (of 25) patients in DHS group and 21 (of 25) patients in DCS group (56% vs. 84%) six months after the surgery. Bone union was significantly better in DCS group (P=0.031). In addition, six months after the surgery, the devices used in 14 people in DHS group and 24 people in DCS group were fixed and the difference between the two groups was significant (P=0.001). 14 and 24 patients had total recovery in DHS and DCS groups، respectively (20% vs. 44%) with a significant difference (P=0.020).Conclusion: Considering obtained results, it can be concluded that using DCS is recommended over DHS due to severity of pain, bone union and fixation of the device.

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

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Writer: 

مهدی-جلالی

Issue Info: 
  • End Date: 

    مهر 1384
Measures: 
  • Citations: 

    0
  • Views: 

    245
  • Downloads: 

    0
Keywords: 
Abstract: 

قطعه فوق یک قطعه استراتژیک در صنعت حفاری است که دانش فنی آن را جهاد تهیه کرده است. دانش فنی این قطعه شامل مشخصات مکانیکی و متالورژیکی، نقشه فنی و نقشه بازرسی و همچنین اسکوپ بازرسی است.

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

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Issue Info: 
  • Year: 

    1380
  • Volume: 

    35
  • Issue: 

    3 (پیاپی 73)
  • Pages: 

    283-293
Measures: 
  • Citations: 

    0
  • Views: 

    701
  • Downloads: 

    0
Abstract: 

استفاده از کابل ها در سازه های مهندسی همواره مورد توجه مهندسان بوده است. کابل ها در حالی که از مقاومت بالایی برخوردارند، دارای وزن کم، هزینه پایین و انعطاف پذیری بالایی هستند و به همین جهت هر جا که شرایط کاری اجازه دهد، به عنوان یک گزینه مقرون به صرفه و بهینه، مطرح می باشند. از موارد استفاده کابل ها در صنعت به عنوان مثال می توان به پل های معلق، کابل های مهارکننده دکل ها و خطوط انتقال نیرو، سقف های معلق، تله کابین و ... اشاره کرد. در این مقاله با مینیمم سازی انرژی پتانسیل تغییر شکل یک کابل و تعمیم آن برای شبکه کابل، شرایط لازم برای تعادل به دست آمده است و پس از تعیین معادلات مربوط به بار گسترده، با معرفی روش “DYNAMIC Relaxation” تحلیل شبکه کابل انجام پذیرفته است. سپس با حل چند مثال صحت روش فوق نشان داده شده است و در ادامه برای نشان دادن چگونگی عملکرد این روش، تعدادی مثال از شبکه کابل های تحت بار گسترده بررسی شده است.

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

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