A building element of an active negative permeability metamaterial

2013 ◽  
Author(s):  
J. Machac ◽  
L. Jelinek
Keyword(s):  
Negative Permeability ◽  
Building Element

scholarly journals Research on Supplier Selection of Prefabricated Building Elements from the Perspective of Sustainable Development

2021 ◽  
Vol 13 (11) ◽  
pp. 6080
Author(s):  
Yinghui Song ◽  
Junwu Wang ◽  
Feng Guo ◽  
Jiequn Lu ◽  
Sen Liu
Keyword(s):  
Sustainable Development ◽  
Analytic Hierarchy Process ◽  
Supplier Selection ◽  
Equation Model ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Analytic Hierarchy ◽  
Building Element ◽  
Hierarchy Process ◽  
Prefabricated Building

Prefabricated building is an efficient building mode. Compared with the traditional building mode, the prefabricated building has advantages of less pollution, high construction efficiency, being more labor-saving, and economy, which is in line with China’s sustainable development strategy. This paper proposes a supplier selection evaluation model based on the mechanism equation model (SEM) and intuitionistic fuzzy analytic hierarchy process (IFAHP). Based on a detailed literature review, 300 structured questionnaires were distributed to the relevant enterprises, and an evaluation index system of prefabricated building element suppliers was built. With the fitting and modification process using a structural equation model, and assist of a path factor, an evaluation index system for evaluating the prefabricated building element suppliers was finally obtained. Finally, the intuitionistic fuzzy analytic hierarchy process was used to establish a selection model of prefabricated element suppliers, and the prefabricated element suppliers of Shuangyashan prefabricated construction projects were analyzed as a case study. The results show that the following factors have the most significant impact on supplier selection (from high to low): quality, economy, long-term cooperation, after-sales, and transportation. This study had a comprehensive consideration of the influencing factors existing in the whole selection process and should provide a valuable reference for the sustainable development of prefabricated construction engineering.

Analysis of Building Element Design Methods

AEI 2011 ◽  
2011 ◽  
Author(s):  
H. Nur Genc ◽  
M. Cem Altun
Keyword(s):  
Design Methods ◽  
Building Element

LOOP ANTENNA WITH A SEMICONDUCTOR ELEMENT

2021 ◽  
Author(s):  
П.А. ТИТОВЕЦ ◽  
А.И. САТТАРОВА ◽  
А.А. ПИЩЕРКОВ ◽  
Н.С. БЕКУШЕВ
Keyword(s):  
Laser Radiation ◽  
Reflection Coefficient ◽  
Copper Foil ◽  
Loop Antenna ◽  
Laser Source ◽  
Reflection Coefficients ◽  
Building Element ◽  
External Contour ◽  
In Series ◽  
Loop Antennas

Представлены результаты исследований рамочной антенны, в которой подстроечным элементом является фоторезистор, управляемый лазерным излучением. Показано, что использование фоторезистора как элемента внешнего контура рамочной антенны, включенного последовательно, позволяет изменять согласование рамочной антенны с помощью внешнего лазерного источника. Представлены результаты исследований характеристик коэффициента передачи рамочных антенн, состоящих из медной фольги на диэлектрической основе и полупроводникового элемента. Установлено, что при изменении интенсивности лазерного излучения, падающего на полупроводниковый элемент-фоторезистор, изменяется коэффициент отражения рамочной антенны. В диапазоне от 10 МГц до 18ГГц получены зависимости коэффициентов отражения (Su)рамочных антенн с полупроводниковым элементом. Проведено сравнение рамочной антенны и рамочной антенны с фоторезистором. The results of an experiment with a loop antenna, in which the building element is a photoresistor controlled by laser radiation, are presented. It is shown that the use of a photoresistor as an element of the external contour of a loop antenna connected in series makes it possible to change the matching of the loop antenna due to an external laser source. The results of studies of the characteristics of the transmission coefficient of loop antennas consisting of a dielectric copper foil and a semiconductor element are presented. It was found that when the intensity of the laser radiation incident on the semiconductor element-photoresistor changes, the reflection coefficient of the frame antenna changes. In the range of 10 MHz-18 GHz, the dependences of the reflection coefficients (S11) of loop antennas with a semiconductor element are obtained. A comparison is made between a loop antenna and a loop antenna with a photoresistor.

Motivation for Reading of Students from initial stage of primary education (1st to 4th Grade)

2020 ◽  
Vol 28 (1) ◽  
Author(s):  
Diana Vatsova ◽  
◽  
◽  
Keyword(s):  
Primary Education ◽  
Cognitive Processes ◽  
Fourth Grade ◽  
Building Element ◽  
Literary Education ◽  
Initial Stage ◽  
Fourth Grade Students ◽  
Competency Based ◽  
Education Of Students

The article discusses one of the areas of the literary education of students in the initial stage of primary education: developing interest in reading. The timeliness and relevance of the problem treated determine the purpose of the study: based on international pedagogical experience, to define a model that increases the interest in reading within the competency-based approach, and highlight the role of motivation as a building element of this model. Analyses of the structure of motivation for reading, and the means of integration of cognitive processes and creativity when working with artistic text are done, being the aim to increase the motivation for reading of first to fourth grade students.

Isotropic negative permeability composite based on Mie resonance of the BST-MgO dielectric medium

2008 ◽  
Vol 53 (21) ◽  
pp. 3272-3276 ◽  
Author(s):  
Qian Zhao ◽  
Lei Kang ◽  
Bo Du ◽  
HongJie Zhao ◽  
Qin Xie ◽  
...  
Keyword(s):  
Dielectric Medium ◽  
Negative Permeability ◽  
Mie Resonance

Development of an Environmental Database for Construction Finish Materials Organized by Building Element

2015 ◽  
Vol 752-753 ◽  
pp. 758-762 ◽  
Author(s):  
Rak Hyun Kim ◽  
Sung Ho Tae ◽  
Chang U Chae ◽  
Ji Hoon Kim
Keyword(s):  
Classification System ◽  
Environmental Effect ◽  
Construction Project ◽  
Construction Materials ◽  
Environmental Information ◽  
Building Element ◽  
Effect Assessment ◽  
Assessment Program ◽  
The Impact ◽  
Building Elements

The purpose of this study was to develop an environmental database for construction finish materials organized by building element as part of an effort to develop an environmental effect assessment program for buildings. To this end, a classification system has been developed for building elements that satisfies the demands from construction project stakeholders to acquire environmental information. Furthermore, among the construction materials, an environmental database of the finish materials has been developed for each building element based on reference substances and the impact indexes of six environmental effect categories of the national LCI DB.

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