• Title/Summary/Keyword: elements of Greece

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Seismic response and retrofitting proposals of the St. Titus Chruch, Heraklion, Crete, Greece

  • Tzanakis, Michael J.;Papagiannopoulos, George A.;Hatzigeorgiou, George D.
    • Earthquakes and Structures
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    • v.10 no.6
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    • pp.1347-1367
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    • 2016
  • The purpose of this work is to investigate the seismic behavior of St. Titus Church in Heraklion, Crete, Greece as well as the need of its seismic retrofitting. A numerical model of the Church is constructed using shell finite elements and it is then seismically examined using response spectrum and linear time-history analyses. Effects of soil-structure interaction have been also taken into account. The Church without retrofit is expected to exhibit extensive tensile failures and many compressive ones. Aiming to maintain the architectural character of the structure as well as to increase its seismic resistance, a retrofitting procedure involving injection of cement grout in conjunction with reinforced concrete jacketing to the internal side of the masonry walls is proposed. A numerical implementation of the proposed seismic retrofitting is performed and its effect is evaluated by response spectrum and linear time-history analyses. From the results of these analyses, it is shown that compressive failures are eliminated while only few tensile failures of local character take place.

A Study on Pleat Expression Shown in Greek Sculpture (그리스 조각에 나타난 주름 표현에 관한 연구)

  • Lee, Eui-Jung;Kang, Kyung-Ae
    • Journal of the Korea Fashion and Costume Design Association
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    • v.15 no.4
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    • pp.157-173
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    • 2013
  • In the pleats of the statue in the ancient Greece, a vivid expression is included about clothing, which has organic relationship with a human body. This study examined about diverse expressions of pleats that were shown in the Greek sculpture, based on understanding about a pleat meaning and function, and clothes. As a result, the clothes, which were shown in the statue in the ancient Greece, were reflecting spirit and fashion of the times. The pleats, which were expressed in clothing, are closely related to a human body and simultaneously are those that a sculptor showed own creative intention in a work by reflecting a historical demand, thereby having become an important element of dominating the image in the whole clothing. Also, a change and development in expression were being progressed according to a flow of each period. Amidst what expressiveness based on lines are excellent, the unity and the dynamic formative characteristic were forming the mainstream. The design-based elements related to these characteristics are judged to possibly give many inspirations to designers in the modern fashion design sphere, which is mixed diverse styles, and are considered to be able to be helpful even for establishing newer and more creative design.

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The Diorism in Proposition I-22 of 『Euclid Elements』 and the Existence of Mathematical Objects (『유클리드 원론』 I권 정리 22의 Diorism을 통해서 본 존재성)

  • Ryou, Miyeong;Choi, Younggi
    • Journal of Educational Research in Mathematics
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    • v.25 no.3
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    • pp.367-379
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    • 2015
  • The existence of mathematical objects was considered through diorism which was used in ancient Greece as conditions for the existence of the solution of the problem. Proposition I-22 of Euclid Elements has diorism for the existence of triangle. By discussing the diorism in Elements, ancient Greek mathematician proved the existence of defined object by postulates or theorems. Therefore, the existence of mathematical object is verifiability in the axiom system. From this perspective, construction is the main method to guarantee the existence in the Elements. Furthermore, we suggest some implications about the existence of mathematical objects in school mathematics.

A Study on the Foreign Details of the Kushan Costume - Focusing Analysis of Antiquities - (쿠샨 왕조 복식에 나타난 외부적인 요소 - 유물분석을 중심으로 -)

  • Chang, Youngsoo
    • Fashion & Textile Research Journal
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    • v.20 no.1
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    • pp.10-21
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    • 2018
  • Kushan dynasty was located in the middle of Silkroad, from the 1st century BC to the second century AD, where it negotiated with various races. Therefore, the culture of the Kushan has multi cultural elements. The purpose of this study is to understand the life of the ancient Silkroad by accessing this characteristic culture of the Kushan through costume analysis. And the results of this study will be used as a basic data for studying the relationship between Korean ancient costumes and Silkroad costume type. As a research method, literature survey and artifacts analysis were performed in parallel. The results of this study are as follows: The basic type of the Kushan costume was a typical nomadic ethnic type with a long tunic and trousers. Tunic was fastened with a belt and straps at the waist, and the lower part of the belt was wider like a skirt. The tunic was divided into two types: open front and closed front. Because Kushan was originally a nomadic people who lived in Central Asia, the nomadic elements of Central Asia remained unchanged in the early costumes of the Kushan, but over time the details of the costumes changed according to the surrounding political situation. When Kushan negotiated with Parthia, the parthian coat was worn by the influence of them. After occupying Greco Bactria, accepting the Greek culture of Bactria, Kushan's costume was supplemented by the external costume element of drapery, which changed the style of the nomadic costume into a elegant style.

Rehabilitation of hospital buildings using passive control systems

  • Syrmakezis, C.A.;Mavrouli, O.A.;Antonopoulos, A.K.
    • Smart Structures and Systems
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    • v.2 no.4
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    • pp.305-312
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    • 2006
  • In the case of hospital buildings, where seismic design requirements are very high, existing structuresand especially those attacked by past earthquakes, appear, often, unable to fulfil the necessary safety prerequisites. In this paper, the retrofitting of hospital buildings is investigated, using alternative methods of repair and strengthening. Analysis of an existing hospital building in Patras, Greece, is performed. The load-bearing system is a reinforced concrete system. Two solutions are proposed: strengthening using concrete jackets around column and beam elements and application of viscoelastic dampers for the increase of the stability of the structure. Adequate finite element models are constructed for each case and conclusions are drawn on the efficiency of each rehabilitation method.

Analysis of Two Electrocution Accidents in Greece that Occurred due to Unexpected Re-energization of Power Lines

  • Baka, Aikaterini D.;Uzunoglu, Nikolaos K.
    • Safety and Health at Work
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    • v.5 no.3
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    • pp.158-160
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    • 2014
  • Investigation and analysis of accidents are critical elements of safety management. The over-riding purpose of an organization in carrying out an accident investigation is to prevent similar accidents, as well as seek a general improvement in the management of health and safety. Hundreds of workers have suffered injuries while installing, maintaining, or servicing machinery and equipment due to sudden re-energization of power lines. This study presents and analyzes two electrical accidents (1 fatal injury and 1 serious injury) that occurred because the power supply was reconnected inadvertently or by mistake.

Color Meaning of the East and the West on Dyed Clothing Traditionally (전통 염색복에 표현된 동서양의 색채의미)

  • 신정숙;이상은;정혜정
    • Journal of the Korea Fashion and Costume Design Association
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    • v.2 no.1
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    • pp.75-95
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    • 2000
  • The purpose of this study were: 1) to understand the meaning of color according to the culture 2) to develop color and color arrangements in the thoughts of the East and the West.. The meaning of color on the dyed clothing was investigated through the book written classified with yin, yang, five color elements and Christian color system. The results were as follows; 1. Red wedding dress used the meaning of prevent badness and American used to resist for England in the War of Independence. 2. White wedding dress meaned innocent, gladness to the ancient Greece, Rome and Gothic Christian in the West, and it meaned a dead daughter in Japan, East, 3. Blue clothes meaned lucky in the East and meaned sacredness and love in the West. 4. Yellow was the color of the Emperor in the East, and it meaned death, betray in the West. 5. Black meaned badness in the East, and it meaned sadness in the West.

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Nonlinear analysis of a riverine platform under earthquake and environmental loads

  • Farghaly, Ahmed Abdelraheem;Kontoni, Denise-Penelope N.
    • Wind and Structures
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    • v.26 no.6
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    • pp.343-354
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    • 2018
  • A realistic FEM structural model is developed to predict the behavior, load transfer, force distribution and performance of a riverine platform under earthquake and environmental loads. The interaction between the transfer plate and the piles supporting the platform is investigated. Transfer plate structures have the ability to redistribute the loads from the superstructure above to piles group below, to provide safe transits of loads to piles group and thus to the soil, without failure of soil or structural elements. The distribution of piles affects the distribution of stress on both soil and platform. A materially nonlinear earthquake response spectrum analysis was performed on this riverine platform subjected to earthquake and environmental loads. A fixed connection between the piles and the platform is better in the design of the piles and the prospect of piles collapse is low while a hinged connection makes the prospect of damage high because of the larger displacements. A fixed connection between the piles and the platform is the most demanding case in the design of the platform slab (transfer plate) because of the high stress values developed.

Analysis on Gender Characteristics Expressed in Male and Female Costume During the Ancient Greek Age (그리스 시대의 남성복과 여성복에 표현된 젠더(gender) 특성 분석)

  • Yi, Myoung-Hee;Choi, Yoonmi
    • Journal of the Korean Society of Costume
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    • v.63 no.4
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    • pp.84-100
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    • 2013
  • Ancient Greece was a patriarchal society that distinguished gender roles between men and women. Although their costumes were composed of simple rectangular fabric without any technical complications in itself, the Greeks did try to express gender differences in their clothing. The final look of the Greek costume was dependent on the way the cloth draped onto its wearer as well as the wearer's identity. Greeks costume could just be seen as a rectangular fabric when it was not draped on a person's body. The purpose of this study is to examine how the gender differences were expressed in the ancient Greek drapery costume, which was made by using a completely different technical process, compared with the modern tailored costume. There are four elements of the costume that give the costume its formative shape, which are the wearer's body, the rectangular fabric (material as the first formative costume), the way the fabric is draped, and the final appearance as the second formative costume (the relationship between the wearer's body and the costume) and this study analyzes these elements individually. It is intended to analyze the gender characteristics and how each element appears in a different way from the perspective of Structuralism, an analytical method that considers a phenomenon as a total sum of the elements. Literature research was conducted and representative sculpture, painting and pottery, were used between the Archaic Period (B.C. 800~500) and the Classical Period (B.C. 500~323). The results show that the gender differences appear in each formative element of costume: First, the body was distinguished by the ancient Greek custom. The man's nudity was accepted while the woman's body was concealed. Second, in regards to the first formative costume, which was the rectangular fabric, men's were made with thick high quality wool because their involvement in outdoor activities meant that they needed clothes to stay warm, while the women wore clothes made of thin wool or hemp cloth, because their most of their activities were at home. Third, the way to drape the fabric shows the gender differences by changing the length of the clothing and its design ; men's short khiton was practical for big movement and at the same time the clothing exposed the man's body. The woman's doric khiton diversified its decoration by the size of the apotigma and by using the belt. Finally the second formative costume reflected the Greeks' social distinction between a man's body and a woman's body. The man's costume naturally exposed the man's body. On the other hand, the woman's long costume has a variety of shapes on the ground, that concealed her lower body, while the ornamental function was more accentuated than the man's costume. The gender differences expressed in Greek costume fundamentally reflected the point of view of the male and female body and their social roles in society.

Practical seismic assessment of unreinforced masonry historical buildings

  • Pardalopoulos, Stylianos I.;Pantazopoulou, Stavroula J.;Ignatakis, Christos E.
    • Earthquakes and Structures
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    • v.11 no.2
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    • pp.195-215
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    • 2016
  • Rehabilitation of historical unreinforced masonry (URM) buildings is a priority in many parts of the world, since those buildings are a living part of history and a testament of human achievement of the era of their construction. Many of these buildings are still operational; comprising brittle materials with no reinforcements, with spatially distributed mass and stiffness, they are not encompassed by current seismic assessment procedures that have been developed for other structural types. To facilitate the difficult task of selecting a proper rehabilitation strategy - often restricted by international treaties for non-invasiveness and reversibility of the intervention - and given the practical requirements for the buildings' intended reuse, this paper presents a practical procedure for assessment of seismic demands of URM buildings - mainly historical constructions that lack a well-defined diaphragm action. A key ingredient of the method is approximation of the spatial shape of lateral translation, ${\Phi}$, that the building assumes when subjected to a uniform field of lateral acceleration. Using ${\Phi}$ as a 3-D shape function, the dynamic response of the system is evaluated, using the concepts of SDOF approximation of continuous systems. This enables determination of the envelope of the developed deformations and the tendency for deformation and damage localization throughout the examined building for a given design earthquake scenario. Deformation demands are specified in terms of relative drift ratios referring to the in-plane and the out-of-plane seismic response of the building's structural elements. Drift ratio demands are compared with drift capacities associated with predefined performance limits. The accuracy of the introduced procedure is evaluated through (a) comparison of the response profiles with those obtained from detailed time-history dynamic analysis using a suite of ten strong ground motion records, five of which with near-field characteristics, and (b) evaluation of the performance assessment results with observations reported in reconnaissance reports of the field performance of two neoclassical torsionally-sensitive historical buildings, located in Thessaloniki, Greece, which survived a major earthquake in the past.