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Issue Info: 
  • Year: 

    2016
  • Volume: 

    3
Measures: 
  • Views: 

    289
  • Downloads: 

    2203
Abstract: 

HUMAN FROM THE BEGINNING OF THE CREATION GET INSPIRED FROM THE ENVIRONMENT AND THEIR AROUND NATURE AND PUT IT ON CREATIVITY AND DESIGN. BUT OVER TIME AND THE IMPROPER USE OF NATURE AND ITS RESOURCES, WAS FACED WITH MANY PROBLEMS. PROBLEMS SUCH AS AIR POLLUTION THAT GRIPPED THE MAJOR CITIES OF THE WORLD AND INVOLVED SERIOUS THREATS TO HUMAN LIFE. THESE PROBLEMS HAVE PROMPTED PEOPLE TO LIVE IN HARMONY WITH NATURE, HENCE WAS RAISED THE BionicS SCIENCE THAT WAS IN SYNC WITH NATURE AND GET INSPIRED BY IT. DUE TO THE ENERGY CRISIS AND NATURAL RESOURCES, ARCHITECTS HAVE BEEN WORKING WITH A NEW ATTITUDE IN Bionic ARCHITECTURAL AND STRUCTURAL SOLUTION TO GET OUT OF THIS CRISIS AND PRESERVE THEIR ENERGY AND FOOD IN THEIR FUTURE WORLD SO THAT, WITH THE COMBINATION BETWEEN NATURE AND TECHNOLOGY A STEP TOWARD ENERGY SELF-SUFFICIENCY AND FOOD IN THEIR FUTURE WORLD. FAMILIARIZE WITH THE HISTORY OF Bionic SCIENCE, BASIC DEfinITIONS, CONCEPTS AND PRINCIPLES OF SCIENCE PERMIT A FIRST STEP TO TAKING ADVANTAGE OF IT IN A VARIETY OF FIELDS INCLUDING ARCHITECTURE. THE AIM OF THIS RESEARCH WAS RECOGNITION OF CONCEPT OF Bionic ARCHITECTURAL AND DETERMINE ITS PLACE IN ARCHITECTURE, IN ORDER TO ACHIEVE A TYPE OF ARCHITECTURE THAT SYNC WITH NATURE WITH A ITS APPLICATION AND THE PRINCIPLE OF MINIMUM ENERGY CONSUMPTION AND GREEN ARCHITECTURE TO CREATE AN OPTIMAL PLAN AND ANSWER TO THE EXISTING PROBLEMS IN THE BEST POSSIBLE WAY. THE RESEARCH METHODOLOGY WAS THROUGH ANALYSIS VIA THE SURVEY THE Bionic ARCHITECTURE AND FOR DATA COLLECTION WAS USED THE LIBRARY STUDIES.

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Author(s): 

Zhang M. | Wang C. | Su Y.

Issue Info: 
  • Year: 

    2023
  • Volume: 

    16
  • Issue: 

    5
  • Pages: 

    1030-1043
Measures: 
  • Citations: 

    0
  • Views: 

    31
  • Downloads: 

    7
Abstract: 

Taking the electric eel as a Bionic object, a long undulatory fin is designed. The turbulent model standard k-ε is used to solve the N‒S equation of a three-dimensional unsteady incompressible fluid. The hydrodynamic characteristics of the undulatory fin are studied, and the influence of the swing angle, wave frequency and ground effects on the propulsion performance of the undulatory fin are discussed. The mathematical models of the average thrust and average lateral force of the undulatory fin are established by using multiple linear regression. The results show that the thrust and lateral force of the undulatory fin increase with increasing swing angle and swing frequency, but in a motion period, the number of fluctuations of the thrust is approximately twice that of the lateral force. The relationship between the average thrust force and the average lateral force of the undulatory fin and the wave frequency and the maximum swing angle satisfies a specific exponential law. When the undulating fin moves near the wall (d ≤0. 2 W), due to the coupling between the vortex at the lower edge and the tail vortex where part of the vortex is transferred to the two sides, the total thrust decreases, and the lateral force increases.

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Writer: 

AKBARI SIAVASH

Issue Info: 
  • Year: 

    2016
  • Volume: 

    4
Measures: 
  • Views: 

    283
  • Downloads: 

    442
Abstract: 

PRESENCE OF AUTOMOTIVE INDUSTRY CAN BE AN INDICATOR FOR ASSESSING INDUSTRIAL STATUS OF A COUNTRY, BECAUSE AUTOMOTIVE INDUSTRY PRACTICALLY ENHANCES THE KNOWLEDGE LEVEL IN THE COUNTY AND AFTER A WHILE A COUNTRY EQUIPPED WITH THIS INDUSTRY CAN BE ENABLED IN TENS OF OTHER FIELDS. FEATURING BY HIGH LEVEL OF finANCIAL POWER, THIS INDUSTRY CAN INCREASE RESEARCH AND DEVELOPMENT ACTIVITIES AND PURCHASING TECHNICAL SCIENCE FROM OUTSIDE AND AS DISCUSSED EARLIER, THIS BRINGS ABOUT DEVELOPMENT ACROSS OTHER SECTORS. EXISTENCE OF MUSEUM AND CAR EXHIBITION IS ONE OF CULTURAL NECESSITIES AND CONSIDERING THE ACTIVITY AND INFLUENCE AREA, IT CAN BE CONSIDERED AS A HUGE SCHOOL SERVING EDUCATION AND EXPANSION OF SCIENCE AMONG ALL SOCIETY MEMBERS. MEANWHILE, ATTENTION TO EMPIRICAL SCIENCES AND HUMAN EXPERIENCE IN INDUSTRY AGE IS A FACTOR OF FORMATION OF MUSEUM AND FAIRS. CONSIDERING THE RELEVANCE OF THIS INDUSTRY, ARCHITECTURES AND DESIGNERS BELIEVE THAT DESIGNS INSPIRED FROM NATURE CAN EFFECTIVELY ASSIST IN REDUCTION OF ENVIRONMENTAL HARMS. BionicS, OR BIOMETRICS OR CREATIVE BIOENGINEERING APPLIES EXISTING BIOLOGICAL SYSTEMS AND METHODS FOUND IN NATURE IN ENGINEERING AND MODERN TECHNOLOGY SYSTEMS.

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

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Author(s): 

Narighomi Masoud

Issue Info: 
  • Year: 

    2018
  • Volume: 

    7
  • Issue: 

    13
  • Pages: 

    107-125
Measures: 
  • Citations: 

    0
  • Views: 

    1670
  • Downloads: 

    0
Abstract: 

Knowledge of humanities in the thinking and practice of engineering nowadays is necessary because of the ambiguities of modern technology in terms of its use in development and its consequences for the future of human beings. The intent of Bionic Architecture، as a master’ s program، should not be simply considered positive، ignoring the associated ethical and humane criticisms. This study is conducted on two levels، i. e.، philosophy of technology and ethics of technology. Regarding the philosophy of technology، biotechnologies are explained epistemologically and ontologically. Regarding the ethics of technology، social ethics and environmental ethics are discussed. Then، the syllabus of the course Philosophy of Art is compared with that of similar courses in other engineering curricula in Iran as well as in the United States. The main finding of this research is that although presently the course of Islamic Wisdom is included in the Bionic Architecture program، it is not sufficient. Training for critical thinking as well as for ethical values instead of the mere description of modern technology must be placed at the core of the curriculum to give depth to students’ thinking and bring about ethical and value development in architectural technology.

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Issue Info: 
  • Year: 

    2020
  • Volume: 

    49
  • Issue: 

    4 (89)
  • Pages: 

    105-114
Measures: 
  • Citations: 

    0
  • Views: 

    513
  • Downloads: 

    0
Abstract: 

In the present study, a computer program is developed which can be used for thermal analysis of radiators with corrugated louvered fin and flat tube. This program is able to capture all the geometry-dependent aspects of heat transfer regarding these radiators. It also gains the capability of capturing the air flow non-uniformity through the radiator. The program showed a good agreement when it was tested against experimental data. The maximum error in the experimented range of cooling flowrate and air velocity is 5%. Two important parametric studies have been performed on air mal-distribution and radiator aspect ratio effects on the radiator thermal performance. Results show that air mal-distribution reduces thermal performance by 20%. Increasement of aspect ratio introduces up to 45% performance improvement. finally, a novel efficient geometry for fin profiles has been introduced and its improving effect on thermal performance is shown using the program.

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Issue Info: 
  • Year: 

    2014
  • Volume: 

    12
Measures: 
  • Views: 

    153
  • Downloads: 

    82
Abstract: 

INTRODUCTION: THE RPR SYPHILIS SCREENING TEST IS A MACROSCOPIC NON- TREPONEMAL FLOCCULATION CARD TEST FOR DETECTION OF REAGIN, AN ANTIBODY LIKE SUBSTRATE PRESENT IN SERUM OR PLASMA AND SPINAL FLUID FROM SYPHILITIC PERSONS. REAGINS ARE A GROUP OF ANTIBODIES AGAINST SOME COMPONENTS OF THE DAMAGE TISSUES FROM PATIENTS INFECTED BY TREPONEMA PALLIDUM, THE AGENT WHICH CAUSES THE SYPHILIS. AIM: WE COMPARED TWO MANUAL RAPID PLASMA REAGIN (RPR) ASSAY KITS, ENISON (IRAN) AND Bionic (GERMANY).

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

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Author(s): 

Journal: 

SMALL

Issue Info: 
  • Year: 

    2022
  • Volume: 

    18
  • Issue: 

    12
  • Pages: 

    0-0
Measures: 
  • Citations: 

    1
  • Views: 

    10
  • 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: 

    4
Measures: 
  • Views: 

    193
  • Downloads: 

    329
Abstract: 

THE MOST IMPORTANT ISSUE IN THE DESIGN OF HIGH-RISE BUILDING IS THE LATERAL LOAD SYSTEM THAT ACCORDINGLY, THE SELECTION OF A STRUCTURAL SYSTEMS THAT CAN DUCTILITY, STIFFNESS, AND SUFFICIENT RESISTANCE BASED ON VALID REGULATIONS PROVIDE IS THE MOST IMPORTANT PRINCIPLE IN THE FIELD OF HIGH-RISE BUILDING BECAUSE THE PARAMETERS OF STIFFNESS, DUCTILITY AND STRUCTURAL RESISTANCE WILL CHANGE WITH VARIATION THE TYPE OF LATERAL LOAD SYSTEMS A RELATIVELY LARGE AMOUNT. THEREFORE, IN THIS STUDY, TWO STRUCTURAL SYSTEMS TUBE AND DIAGRID IN SIMILAR STRUCTURES (IN PLAN, HEIGHT, LOADING, ETC) WITH 30 AND 38 FLOORS HAS BEEN MODELLED IN SOFTWARE ABAQUS AND AFTER THE CALCULATION OF EARTHQUAKE FACTORS ON STRUCTURES MENTIONED (BY PROGRAM WRITTEN IN MATLAB BASED ON 2800 REGULATION). ANALYSIS OF STATIC AND LINER DYNAMIC AND NONLINEAR STATIC (PUSHOVER), RESPECTIVELY IS DONE ON STRUCTURES 30 AND 38 FLOORS OF THE DIAGRID AND 30 AND 38 FLOORS OF THE TUBE AND finALLY AFTER ANALYSING OF 4 STRUCTURE STUDIED, THE ADVANTAGES AND DISADVANTAGES AND RELATIVE SUPERIORITY OF THE TWO SYSTEMS LATERAL LOAD IN STRUCTURES MENTIONED BASED ON STIFFNESS PARAMETERS, RELATIVE DISPLACEMENT, DUCTILITY AND RESISTANCE COMPARED WITH EACH OTHER. THE IMPORTANCE OF THIS COMPARISON IS THAT BASED ON ITS finDING CAN BE DETERMINED THE SYSTEM SUITABLE LATERAL LOAD BASED ON THE SEISMIC HAZARD AT THE SITE OF CONSTRUCTION. THE RESULTS OF THE ABOVE ANALYSIS SHOW THAT THE DIAGRID STRUCTURES HAVE STIFFNESS HIGHER THAN THE TUBE STRUCTURES BUT ITS PLASTICITY IS LOWER THAN THAT THE TUBE SYSTEM.

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

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Journal: 

Issue Info: 
  • Year: 

    2003
  • Volume: 

    37
  • Issue: 

    3 (81)
  • Pages: 

    363-377
Measures: 
  • Citations: 

    0
  • Views: 

    1376
  • Downloads: 

    0
Keywords: 
Abstract: 

In this paper pin-fin cooling by mixed convection has been considered. The system consisting of a pin-fin heat sink and a chimney is presented for increasing heat transfer and draft force. The flow regime is laminar. The results is applied to problems in which the size of the overall system is constrained. For a given heat dissipation and total system size optimal values of the pin-fin diameter and heat sink porosity are obtained. It is shown hat the optimum occur for systems with and without chimney. The pin-fin array is modeled as a Forchheimer-flow porous medium (Non Darcy-flow). The results of optimization are compared with existing data in literature. Also it is shown that the results obtained grom Forchheimer-flow porous model agree much better with the experimental results compared with the natural convection dary model.

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Issue Info: 
  • Year: 

    2014
  • Volume: 

    13
Measures: 
  • Views: 

    120
  • Downloads: 

    62
Abstract: 

ELECTROMECHANICAL ACTUATORS (EMAS) ARE OF INTEREST FOR APPLICATIONS WHICH REQUIRE EASY CONTROL AND HIGH DYNAMICS. THE MAIN GOAL OF THIS PAPER IS TO MODIFY AN EXISTING fin CONTROL EMA HARMONIC DRIVE SYSTEM WITH CLASSIC CONTROLLER TO MEET PRESCRIBED STABILITY AND PERFORMANCE ROBUSTNESS CONSTRAINTS. FOR THIS PURPOSE, THE EXPERIMENTAL IDENTIFICATION, UNCERTAINTY MODELLING, AND ROBUST CONTROL DESIGN OF A fin CONTROL EMA SYSTEM WITH TIME DELAY ARE ADDRESSED. THE ROBUST CONTROLLER WAS DESIGNED BY TWO APPROACHES; THE FIRST IS A METHOD BASED ON COMPLEX KHARITONOV THEOREM WHICH NOT ONLY ROBUSTLY STABILIZES THE UNCERTAIN EMA SYSTEM WITH TIME DELAY, BUT ALSO MAINTAINS THE PRE-SPECIFIED MARGINS AND BANDWIDTH CONSTRAINTS. THE SECOND IS AN H¥ THEORY BASED APPROACH. FURTHERMORE, THE DISCREPANCIES BETWEEN THE LINEAR MODEL AND THE ACTUAL SYSTEM, DUE TO IGNORED NONLINEARITIES, WERE ESTIMATED AS MULTIPLICATIVE UNCERTAINTY. SIMULATION AND TEST RESULTS PROVE THE SUPERIOR PERFORMANCE OF THE EMA WITH H∞ CONTROLLER OVER THE ORIGINAL EMA AND THE ROBUST EMA WITH KHARITONOV'S CONTROLLER, ALTHOUGH BOTH CONTROLLERS FULFILLED THE EMA SYSTEM'S PERFORMANCE.

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

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