فهرست مطالب

نشریه نخبگان علوم و مهندسی
سال ششم شماره 2 (خرداد 1400)

تاریخ انتشار: 1400/04/19
تعداد عناوین: 22

فارسی
English

انتخاب همه

An Overview of the Impact of Design Capacity on Load Cableway

Rasool Nodeh Farahani * Pages 34-41

In this paper, we examine the optimal design method of a single-cable freight rope to reduce its manufacturing cost. It can be understood that the pitch and height of the middle support, the main tensile force of the load-bearing ropes, is the main factor in increasing the cost of the cable car. A nonlinear optimization method is determined by the above factors, ensuring the minimum cost of a cable bundle with a maximum design capacity of up to 600 tons per hour. The purpose of optimization is examined by considering the limitations of design, assembly, deformation, and strength. The criteria for changing the optimal parameters of the intermediate supports and ropes carrying the load and tension were shown in changing the design capacity of a cable road based on the analysis of the calculations performed. The results of this optimization work will significantly reduce the cost of building freight air railway.

Keywords: ropeway, optimal design method, cable design, railways

Abstract View Paper Research/Original Article Original: English
Assessing the Differences of Climatic-Temperamental Comfort Zone in Traditional Houses in Four Climates during Critical Temperature Days

Maryam Salkhordeh*, Mahdi HamzehNezhad, Abdollah Gholami Pages 42-56

By looking at the traditional architecture of Iran and exploring it in any context we can discover mysteries and secrets which were the reasons for the success and survival of this architecture. While modern scientific developments in the climatic design field determine rules and regulations for providing comfort in any region, they do not consider physical and temperamental differences among people residing in different climates. While in the traditional architecture, the climatic rules for each region were shaped by the deep relation between the human population and the environment of the region. The main objective of the current study is to accurately assess the climatic-temperamental comfort level in traditional houses. Accordingly, four traditional houses in four different climates were selected and using EcoTech software application, the temperature in these traditional houses is analyzed and the Gioni chart method was analyzed for providing environmental comfort. Based on the findings about the studied houses, the conditions of the house provide a lower comfort level than Gioni comfort level and this is less because of technological shortages but more because of providing climatic-temperamental health temperature.

Keywords: Traditional architecture, climatic-temperamental comfort, health temperature

Abstract View Paper Research/Original Article Original: English
Investigation of the Effect of Composite Patch Dimensions on Patch Efficiency in Cracked Plate Repair by Considering Different Crack Angles

Sadegh Daryaei* Pages 70-85

In this study, the effect of thickness, length and width of each of the composite patches of boron, glass, graphite and carbon epoxy on the stress intensity factor of the first and second modes in one-sided and two-sided repair of the cracked aluminum plate at different crack angles 0 to 90 degrees has been studied. For this purpose, the repaired cracked plate with each of the composite patches is modeled in 3D in Abaqus software. The results show that in both one-sided and two-sided repair modes, increasing the patch thickness except for the glass patch has reduced the stress intensity factor of the first and second modes. The results also show that increasing the length of the patches for all four patches in both one-sided and two-sided repair modes for all angles from 0 to 90 degrees slightly increases the stress intensity factor. Increasing the width of the glass patch in one-sided repair has a different behavior than the other three patches, so that it does not change almost at an angle of 0 to 30 degrees, but decreases slightly from an angle of 30 to 90 degrees, but the other three patches increase from 0 to 45 degrees and decrease from 45 to 90 degrees, and the stress intensity factor of the second mode for all four patches in all angles decreases with increasing patch width.

Keywords: cracked plate, composite patch, crack angle, stress intensity factor, two-sided repair

Abstract View Paper Research/Original Article Original: English
Evaluating Giovanni-Climatic Comfort Zones Considering Four Human Temperaments in Four Different Climates Based on Traditional Medicine Proposing Four Models of Temperamental-Climatic Comfort

Maryam Salkhordeh*, Mahdi HamzehNezhad Pages 193-205

While modern scientific developments in climatic design field determine rules and regulations for providing comfort in any region, they do not consider physical and temperamental differences among people residing in these different climates. This leads to the proposal of an identical comfort zone for all human beings in all the different climates. While in the traditional architecture, the climatic rules for each region were shaped by the deep relation between the human population and the environment of the region. The main objective of the current study is to compare the conditions of environmental comfort in modern and traditional architectures using the Giovanni comfort model and to propose four different temperamental models for adjusting climatic comfort based on different temperaments and humors. The current study uses an analytic-inferential method. In this study, at first we introduce and discuss the principles of traditional medicine about the temperamental comfort of human beings in four different temperamental and climatic regions and based on these discussions four different cities; namely, Amol, Bushehr, Ardebil, and Kashan, are chosen for the analysis. In these cities, Giovanni instructions for providing comfort are analyzed. Based on the findings and by analyzing the Giovanni charts and the temperamental characteristic chart it is concluded that based on the principles of the traditional medicine, in cold areas, the cold tolerance threshold is lower and in hot regions, hotness tolerance threshold is higher. This is because of the consistency and coordination between the individuals’ temperaments which reinforces the temperamental ability of people in that region. Considering the provision of temperamental health temperature, four charts based on four climates are proposed.

Keywords: Climatic design, environmental comfort, modern, traditional architecture, temperamental health

Abstract View Paper Research/Original Article Original: English
Identification of amyotrophic lateral sclerosis disease based on nonlinear analysis of gait signal and fusion in intelligent classifiers

Rahil Noorbakhsh*, Mehdi Khezri Pages 206-213

Neurodegenerative diseases (NDD) including Amyotrophic Lateral Sclerosis (ALS), Parkinson’s disease (PD) and Huntington disease (HD) can be defined as the degeneration in the structure of neurons in human body. It is mentioned in the related literature that NDD may cause various clinical symptoms disrupting gait dynamics. The characterization of gait analysis is crucial for early diagnosis, efficient treatment planning and monitoring of ALS progression and other NDD. The database consisting of 64 five-minute recordings of Compound Force Signal (CFS) obtained from 13 ALS, 15 PD, 20 HD and 16 healthy subjects was used in the study. a five-stage structure is used. In the first step, a data group recorded by force sensitive sensors was used to analyze the walking dynamics that is underneath. In the second step, the signal filtered by the filter bank of wavelet transform with the default coefficients of the noise reduction and improve it. In third Step a set of feature is extracted from recorded data. In the fourth step, the extracted features are considered as inputs of a feature dimension reduction structure. The reduced dimensional attributes are considered as inputs of linear classification structures (SVM) and nonlinear (KNN, D-Tree and MLP). The goal of finding a grade tag is the type of disease based on walking signal analysis. All simulations were implemented under MATLAB software and validation of the proposed method was done by analyzing the cinfusion matrix and calculating the accuracy, sensitivity and specificity index. The results of the simulation showed that the perceptron multi-layered neural network has a precision accuracy of 92% higher in the diagnosis of neurodegenerative complication based on dynamic walking analysis.

Keywords: Neurodegenerative, ICA, Genetic algorithm, AdaBoost, fractal

Abstract View Paper Research/Original Article Original: English
Engineering and Its Application in World Life and Construction

Kianoosh Digaleh* Pages 214-219

The tendency of human life to engineering and technology and advanced technologies is undoubtedly taking shape. Many people tend to use useful and efficient technologies, electronic technologies and engineering structures that are evolving and advancing day by day. How good it is for different human societies to become acquainted with the technological achievements and ideas of different societies. If a suitable environment leads to the aggregation of ideas internationally, this will create scientific organization, which is very clear that this action should be The sooner it happens. Therefore, the establishment of an international headquarters or headquarters under the auspices of international organizations and forums such as the United Nations, it seems very necessary. It is good that the respected professors of universities, research institutes and institutions of higher education are taking steps in this direction. I hope that one day this happy event will happen and that the technical and engineering elite community will reach a global consensus. There are many discussions and articles about engineering and intelligence and the application of applications in life, reading such articles gives a new vision and worldview and a new perspective to great engineers.

Keywords: Environment, Organization, Engineering, Elite, Electronic

Abstract View Paper Research/Original Article Original: English
Regional Priorities for Sustainable Architectural Design in Tehran City Using the LEED Method (District 22, Tehran)

Maryam Salkhordeh*, Seyed Abbas Yazdanfar, Mahdi Hamzeh Nezhad, Mohammad Ali Khanmohammadi, Abdollah Gholami Pages 220-227

Implementing appropriate design approaches for reaching the goals of sustainable architecture, establishing a residential complex relying on clean energies and considering the climatic characteristics and utilizing different technologies are among the most important needs of the country based on the outlook documents for the next ten years of architecture. Localization or adjusting measuring approaches and then realizing global sustainable architectural standards are of utmost importance in this regard. Therefore, this study has adopted the LEED method for realizing the standards. In measuring the LEED indicators, the most important one is the regional scores indicator which must be extracted and introduced in the process of assessing the regional sustainability priorities. There was no such assessment in District 22, Tehran. Therefore, the main objective of the current study is to achieve the ranking of strategic priorities responsive to the climatic conditions of Tehran so that it can be used as a reference for measuring the success of sustainability projects and similar designs. So, by assessing and investigating the regions which have such scores, including some instances in south California, projects in India, Arizona, and a lot of other regions it was concluded that the regional priority credits are determined based on their sub measures. Accordingly, 50 questionnaires were distributed as a survey among architectural and civil engineers in graduate and doctoral programs. After gathering the questionnaires, using descriptive and inferential statistics in SPSS software application, the credits with the highest frequency percentage were selected as the regional priorities. These priorities were (1) reducing water consumption, (2) renewable energies on site, (3) optimizing energy consumption, (4) optimizing water consumption, (5) waste management, and (6) green energies.

Keywords: LEED, regional priority, credit, clean energies

Abstract View Paper Research/Original Article Original: English

نشریه نخبگان علوم و مهندسی

Journal of Science and Engineering Elites

دوماهنامه حوزه علوم پایه و فنی و مهندسی - صنعت و علوم فناوری های نوین به زبان فارسی و انگلیسی

آخرین شماره | آرشیو

ISSN: 2538-581x

صاحب امتیاز:

گروه نخبگان دانشگاهی ایران

مدیر مسئول:

آذین موحدی

سردبیر:

دکتر سیامک حاجی یخچالی

تلفن نشریه: ۰۲۱-۴۴۲۵۸۱۹۷

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فهرست مطالب

نشریه نخبگان علوم و مهندسی سال ششم شماره 2 (خرداد 1400)

نشریه نخبگان علوم و مهندسی

Journal of Science and Engineering Elites

نشریه نخبگان علوم و مهندسی
سال ششم شماره 2 (خرداد 1400)