scholarly journals Non-Conventional Deformations: Materials and Actuation

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1383 ◽  
Author(s):  
Bruno Vermes ◽  
Tibor Czigany

This paper reviews materials and structures displaying non-conventional deformations as a response to different actuations (e.g., electricity, heat and mechanical loading). Due to the various kinds of actuation and targeted irregular deformation modes, the approaches in the literature show great diversity. Methods are systematized and tabulated based on the nature of actuation. Electrically and mechanically actuated shape changing concepts are discussed individually for their significance, while systems actuated by heat, pressure, light and chemicals are condensed in a shared section presenting examples and main research trends. Besides scientific research results, this paper features examples of real-world applicability of shape changing materials, highlighting their industrial value.

Nanoscale ◽  
2021 ◽  
Author(s):  
Xijiao Mu ◽  
Li Hu ◽  
Yuqing Cheng ◽  
Yurui Fang ◽  
Mengtao Sun

In this review, the development context and scientific research results of chiral surface plasmons (SPs) in recent years are classified and described in detail.


2021 ◽  
pp. 026858092110053
Author(s):  
Koichi Hiraoka

This article reviews the research trends in welfare sociology (sociological studies on social security and welfare), one of the many subfields of active research in sociology in Japan. For this purpose, several research streams formed from the 1970s to the 2000s are described, and some of the most important research results produced within these in the past two decades are introduced. In the latter part of this article, a broad overview of the research trends in Japanese welfare sociology is attempted by focusing on the contents of the journal published by the Japan Welfare Sociology Association (JWSA).


2018 ◽  
Vol 11 (3) ◽  
pp. 12 ◽  
Author(s):  
Kanokrat Jirasatjanukul ◽  
Namon Jeerungsuwan

The objectives of the research were to (1) design an instructional model based on Connectivism and Constructivism to create innovation in real world experience, (2) assess the model designed–the designed instructional model. The research involved 2 stages: (1) the instructional model design and (2) the instructional model rating. The sample consisted of 7 experts, and the Purposive Sampling Technique was used. The research instruments were the instructional model and the instructional model evaluation form. The statistics used in the research were means and standard division. The research results were (1) the Instructional Model based on Connectivism and Constructivism to Create innovation in Real World Experience consisted of 3 components. These were Connectivism, Constructivism and Innovation in Real World Experience and (2) the instructional model rating was at a high level (=4.37, S.D.=0.41). The research results revealed that the Instructional Model Based on Connectivism and Constructivism to Create Innovation in Real World Experience was a model that can be used in learning, in that it promoted the creation of real world experience innovation.


2006 ◽  
Vol 14 (4) ◽  
pp. 321-349 ◽  
Author(s):  
Diana Reiss ◽  
Jessica Sickler ◽  
Sarah Gruber ◽  
Paul Boyle ◽  
Elizabeth Elliott ◽  
...  

AbstractThis review of how dolphins are portrayed in popular media (including literature, film, television, and music) reveals four themes that may influence public acceptance of current scientific research into dolphin cognition. These themes are: (a) dolphin as peer to humans, of equal intelligence or at least capable of communicating with or helping humans; (b) the dolphin as the representation of a romantic notion of ideal freedom in nature, embodying principles of peace, harmony or love; (c) the dolphin as a naïve, innocent being that is subordinate and in need of human protection; and (d) the dolphin as superior to humans, potentially affiliating with a higher power or intelligence. This review revealed that the use of dolphins in humor reinforced or lampooned the four identified themes, indicating a common acceptance of these themes. The paper concludes with a discussion of the importance of considering popular narratives in the presentation of scientific research results.


Author(s):  
С.А. Мамаев ◽  
А.Р. Юсупов ◽  
А.С. Мамаев ◽  
З.А. Юсупов

В данной статье даны особенности геологического строения района газопроявления «Цущар» в Кулинском районе на отложениях среднеюрского возраста, предлагается геолого-структурная схема возможного формирования залежи нефти и газа. Незначительные проявления газоносности, связанные обычно с минеральными источниками и подчиненные мощной толще юрских сланцев, развитых на значительных площадях нагорного Дагестана, начали обращать на себя внимание с 1931 г., в связи с поисками месторождений легких редких газов. Анализы газов показывают повышенное содержание легких редких газов в целом ряде месторождений нагорного Дагестана. Кроме группы месторождений Южного Дагестана известен пока только один выход горючего газа в Центральном Дагестане – Кулинском районе. На него указывает в своем рукописном отчете Дагестанскому Совнархозу геолог Н. М. Леднев. Этот выход подчинен юрским сланцам, связан с нарушениями неотектонического характера, образованными в результате сейсмической активизации региона. Цель исследования. Целью наших исследований является обоснование перспектив газоносности Горного Дагестана. На изучаемой территории отмечается наличие неправильных куполовидных складок с неожиданными направлениями их осей, пересекающими основное направление складчатости, частичными местными уклонениями в залегании пластов. Методы исследования. Основными методами исследования при изучении перспектив газоносности Горного Дагестана являлись геолого-структурный, стратиграфический, морфологический, тектонический и дешифрирование аэрофотоснимков. Результаты исследования. По сравнению с Предгорным Дагестаном и Прикумским районом, Горный Дагестан был подвержен более интенсивным геотектоническим движениям, неоднократно подвергался складчатости, испытал инверсию, со значительно большей амплитудой, что привело к усиленной денудации, развитию трещиноватости и разрывов, метаморфизму пород и органических образований. Все это отрицательно влияло на сохранение нефти и газа. Можно предполагать, что многие залежи, сформировавшиеся при прохождении продуцирующими толщами главной фазы нефтеобразования, были разрушены в периоды активизации тектонической деятельности на рубеже юры и мела, мела и палеогена. В дальнейшем шла генерация, преимущественно, газообразных углеводородов, которые при особенно благоприятных условиях могли сохраниться до настоящего времени. По результатам исследований можно утверждать, что газовое проявление Цущар могло проявиться в 1622, 1652 гг. в результате сильных землетрясений, эпицентр которых располагался в пределахисследуемого района This article describes the features of the geological structure of the Tsushar gas show area in the Kulinsky region on the Middle Jurassic deposits, and proposes a geological-structural diagram of the possible formation of oil and gas deposits. Minor manifestations of gas content, usually associated with mineral springs and subordinate to a thick stratum of Jurassic shales, developed over large areas of highland Dagestan, began to attract attention from 1931, in connection with the search for deposits of light rare gases. Gas analyzes show an increased content of light rare gases in a number of fields in highland Dagestan. In addition to the group of fields in Southern Dagestan, only one outlet of combustible gas in Central Dagestan is known – the Kulinsky region. It is pointed out in his handwritten report to the Dagestan Economic Council by the geologist N. M. Lednev. This outlet is subordinate to the Jurassic shale and is associated with neotectonic disturbances formed as a result of seismic activation of the region. Aim. The purpose of our research is to substantiate the prospects for gas content in Gorny Dagestan. In the study area, there are irregular dome-shaped folds with unexpected directions of their axes crossing the main direction of folding, partial local deviations in bedding. Methods. The main research methods in the study of the prospects for the gas content of Mountainous Dagestan were geological-structural, stratigraphic, morphological, tectonic and additional aerial photographs. Research results. Compared to Piedmont Dagestan and Prikumskiy region, Gorny Dagestan was subject to more intense geotectonic movements, repeatedly underwent folding, experienced inversion, with a much higher amplitude, which led to increased denudation, the development of fracturing and fractures, metamorphism of rocks and organic formations. All of this negatively affected the conservation of oil and gas. It can be assumed that many deposits, formed during the passage of the producing strata of the main phase of oil formation, were destroyed during periods of intensified tectonic activity at the boundary between the Jurassic and Cretaceous, Cretaceous and Paleogene. In the future, there was the generation of mainly gaseous hydrocarbons, which, under especially favorable conditions, could persist to the present day. According to the research results, it can be argued that the gas manifestation of Tsushar could have manifested itself in 1622, 1652. as a result of strong earthquakes, the epicenter, which was located within the study area


Author(s):  
Arifin Karim ◽  
Joko Soebagyo ◽  
Sigid Edy Purwanto

Bibliometric analysis is the mapping of research research trends by processing metadata from Google Scolar. The aim is to find out research trends in applied mathematics. The research was conducted on April 30, 2021 through searching the Google Scholar database with the keywords applied mathematics with the publication name journal and the maximum number of results is 500 journals as a sample. Metadata retrieval using the Publish or Perish (POP) application version 7.31. The PoP data were then analyzed descriptively based on the publication year, publisher name, researcher productivity, and journal ranking. To get an accurate map of research developments, PoP data is exported to Exel CSV and Result as RIS file formats. The CSV data was created in a pivot table and the RIS data was analyzed using the VOSViewer (VV) application. The results of the research show that the number of publications of research results in the years 2005-2021 has fluctuated and is mostly published in Elsevier. The most prolific foreign researcher in publishing research results is Biher Bist with 14 articles. The VV visualization shows that the map of the development of applied mathematics research is divided into 5 clusters. Cluster 1 consists of 27 topics, cluster 2 consists of 15 topics, cluster 3 consists of 10 topics, cluster 4 consists of 7 topics, and cluster 5 consists of 3 topics with the most research covering mathematics, paper, problem, solution, system, university, department, science.


2020 ◽  
Vol 11 (2) ◽  
pp. 41-47
Author(s):  
Amandeep Kaur ◽  
Madhu Dhiman ◽  
Mansi Tonk ◽  
Ramneet Kaur

Artificial Intelligence is the combination of machine and human intelligence, which are in research trends from the last many years. Different Artificial Intelligence programs have become capable of challenging humans by providing Expert Systems, Neural Networks, Robotics, Natural Language Processing, Face Recognition and Speech Recognition. Artificial Intelligence brings a bright future for different technical inventions in various fields. This review paper shows the general concept of Artificial Intelligence and presents an impact of Artificial Intelligence in the present and future world.


2016 ◽  
Vol 1 (56) ◽  
pp. 137
Author(s):  
Álvaro Sánchez-Crispín ◽  
Gerardo Mollinedo-Beltrán

Este trabajo tiene como objetivo explicar, territorialmente, los sitios de socialización entre hombres que tienen sexo con otros hombres (HSH) en la Ciudad de Guatemala y su relación con la actividad turística. En una primera parte, se exponen algunos de los conceptos centrales referentes al estudio de los lugares de encuentro de este segmento de la población, desde una perspectiva geográfica. Enseguida, se presenta una visión general de la capital guatemalteca como lugar central del país y nodo principal de servicios para comunidades allende su demarcación nacional, en términos económicos en general y turísticos en especial. En la tercera parte del texto se exponen los resultados de investigación que revelan la expresión territorial de los lugares estudiados. Un hallazgo de este trabajo indica que aunque el volumen demográfico de esta ciudad es considerable, dispone de pocos espacios de socialización de este tipo; sin embargo, su hinterland se expande hacia distintos sitios del país y de naciones vecinas, como El Salvador. ABSTRACTThis paper examines the issue of the territorial arrangement of MSM (men who have sex with men) socialization spaces in Guatemala City and its relationship with tourism. First, we analyze some of the main concepts associated with the explanation of how such places have managed to occupy certain areas within the urban area. Then, we present an overview of Guatemala City as the central place of the country providing services to nationals and foreigners alike. The main research results are given in the last part of the paper, pinpointing at the territorial expression of the places studied. One important finding is that, regardless of its demographic volume, Guatemala City offers a limited number of homoerotic locations. These have a clearly identifiable hinterland, drawn along the southern areas of the country, and including places in neighboring countries such as El Salvador.


2013 ◽  
Vol 40 (2) ◽  
pp. 293-383 ◽  
Author(s):  
Katica Hedrih-Stevanovic

A review, in subjective choice, of author?s scientific results in area of: classical mechanics, analytical mechanics of discrete hereditary systems, analytical mechanics of discrete fractional order system vibrations, elastodynamics, nonlinear dynamics and hybrid system dynamics is presented. Main original author?s results were presented through the mathematical methods of mechanics with examples of applications for solving problems of mechanical real system dynamics abstracted to the theoretical models of mechanical discrete or continuum systems, as well as hybrid systems. Paper, also, presents serries of methods and scientific results authored by professors Mitropolyski, Andjelic and Raskovic, as well as author?s of this paper original scientific research results obtained by methods of her professors. Vector method based on mass inertia moment vectors and corresponding deviational vector components for pole and oriented axis, defined in 1991 by K. Hedrih, is presented. Results in construction of analytical dynamics of hereditary discrete system obtained in collaboration with O. A. Gorosho are presented. Also, some selections of results author?s postgraduate students and doctorantes in area of nonlinear dynamics are presented. A list of scientific projects headed by author of this paper is presented with a list of doctoral dissertation and magister of sciences thesis which contain scientific research results obtained under the supervision by author of this paper or their fist doctoral candidates.


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