• 한국수학사학회지
• /
• 제30권2호
• /
• pp.87-100
• /
• 2017

The ontological status of Newtonian space-time has been debated under the name of substantivalism-relationism controversy. The debates between the two parties are concerned with the nature of existence of space-time. Substantivalism maintains that the points of space-time have existence analogous to material substance. Relationism claims that space-time should be understood as the framework of possible spatio-temporal relations between bodies. Newtonian space is considered as a three dimensional entity in accordance with our geometric common sense. Yet given that the concept of motion is defined as the change of position throughout time, it is possible to interpret space-time as a 4 dimensional entity. In this essay, substantivalist-relationist debate is considered within the context of non-relativistic 4 dimensional space-time theory. This essay attempts to clarify the dispute over the ontology of space-time by elucidating the relationship between the ontology of space-time, motion, and space-time symmetry.

• 한국수학사학회지
• /
• 제32권1호
• /
• pp.17-25
• /
• 2019

This essay elucidates the way the geometries of space-time theories explain material bodies' motions. A conventional attempt to interpret the way that space-time geometry explains is to consider the geometrical structure of space-time as involving a causally efficient entity that directs material bodies to follow their trajectories corresponding to the laws of motion. Newtonian substantival space is interpreted as an entity that acts but is not acted on by the motions of material bodies. And Einstein's curved space-time is interpreted as an entity that causes the motions of bodies. This essay argues against this line of thought and provides an alternative understanding of the way space-time geometry explain the laws of motion. The workings of the way that Newton's flat and Einstein's curved space-time explains the law of motion is such that space-time geometry encodes the principle of inertia which specifies straight lines of moving bodies.

• 한국수학사학회지
• /
• 제28권4호
• /
• pp.181-190
• /
• 2015

In spite of various attempts to characterize the ontological status of space-time, Newtonian substantivalism and Leibnizian relationism, what is really at issue in the controversy between the two parties is by no means clear. This essay argues that from the perspective of space-time symmetries, classical space-time can be unambiguously classified as substantival space-time and relational space-time. The symmetries of space-time theories distinguish the invariant geometric relationships between events. The essential difference between the two space-times stems from whether or not there exists the affine structure that distinguishes the inertial trajectories of a given body.

• 한국실내디자인학회:학술대회논문집
• /
• 한국실내디자인학회 1999년도 춘계학술발표대회 논문집
• /
• pp.102-105
• /
• 1999

The purpose of this study is to analyze the meanings and expressional characteristics of space-time concept in modern architecture. As the architecture spaces reflect and represent the characteristics of times, the meaning and modern expression of space-time concept was studied in the developmental process of space concept on the base of the background of philosophy, science and psychology. At the late 19th century, space concept was changed with relative time-space in philosophy and science and the theory of visual perception. In the beginning of 20th century, space-time concept that combined space with time in the process of image open space expanded movement was developed. In modern architecture, it was expressed as the freedom of movement by open space expanded infinitely and/or abstract space without spacial measure, multiple view point by superimposed and/or polyhedric space and kinetic vision by dynamic and/or continuous space.

• 한국실내디자인학회논문집
• /
• 제22권6호
• /
• pp.98-107
• /
• 2013

Space evolves from the concept of deterministic static location to a dynamic, connected area through the interference of the user. While this does incorporate physical changes of the space, it also reflects the changes of the program or characteristics of the space through the actions and changes of the user. Therefore, in this study we plan to review the characteristic of time appearing within space, thereby discussing the impact of changing of condition in time-space to the decision making of the user. Further, we plan to analyze the specific causes, and subsequently introduce a new perspective over space. In order to achieve this, we need to first understand the reason why the attribute of time needs to be discussed in space, and perform a fundamental analysis of factors for the changes of the users' actions following changes in space-time condition. This means that space is not limited to merely satisfying its innate objective as an area, but may have a basis for modifying its role to help the decision making of the users caused by changes in space-time conditions. Accordingly, we analyze the factors for change of environment that can appear in space following the flow of time caused by correlation in space-time, as well as psychological factors and variables for decision making by the users. Based on this, we analyze cases to study the influence of condition changes in time-space on the action decision judgment of the users. Through this, we propose that the actions of the users can be determined following changes in time-space conditions, and discuss the need for changes in our perspective of space.

• 한국실내디자인학회:학술대회논문집
• /
• 한국실내디자인학회 2005년도 추계학술발표대회 논문집
• /
• pp.161-164
• /
• 2005

The concept of Space-time is performed while the movement of human Is imaged on coming 20th century up. Specifically it is considered that the movement of human is caused by the relativistic otherness rather than an absolute subject in space of deconstructive tendency. The purpose of this study is that I try to analyze an expression of relative space-time concept in desconstructive tendency and I have to get a concept how this kind of expression effect the contemporary commercial space. Through this study, I can get to know that the expression of relative space-time concept expresses the dynamic construction by the indeterminacy and the visual effect by the dematerialization in the contemporary commercial interior-space. According to the result of study, the concept of space get to be more meaningful, relative space-time concept and it can be attributed to the concept of human's new creative space over human's life in general.

• 정보와 통신
• /
• 제18권6호
• /
• pp.119-125
• /
• 2001

1990년 초반부터 송신 다이버시티에 대한 연구가 있어 왔다. 1990년 후반부터는 송수신 다이버시티에 대한 실용적인 결과가 부호 이론과 접목이 되면서 나오기 시작한다. 그 중에서 매우 유용한 결과인 Space-Time 부호에 대하여 다룬다. 본 논문에서는 직교 Space-Time block code. Layered Space-Time processing, 그리고 Space-Time trellis Coding의 세 가지로 분류하여 내용을 정리한다.

• 한국의류학회지
• /
• 제33권4호
• /
• pp.644-654
• /
• 2009

The purpose of this study is to analyze the characteristics of current fashion illustrations within the framework of Multi-space method. Multi-space means being piled up one moment & space on others, and being amassed in a scene. This method is related with Dadaism, Surrealism and Postmodernism, and also influences on the current fashion illustration. In this study, the types of Multi-space method could be classified into 4 types; Repetitive Time Mixture in Multi-space, Juxtaposed Time Mixture in Multi-space, Reiterated Space Mixture in Multi-space, Projected Space Mixture in Multi-space. The characteristics of Multi-space were analyzed and the results are as followed. The distinctive methods for Time Mixture in Multi-space are repetition and juxtaposition in a scene. Time Mixture in Multi-space can make the nonlinear narration and unreal illusory space in fashion illustrations more effectively. Reiterated Space Mixture in Multi-space can be related with the heterogeneous, surrealistic illusions in current fashion illustrations. Projected Space Mixture in Multi-space can be characterized into inter-penetration. It can derive spectators to mix the projected & transparent images in a scene for their own imaginary stories. The final imagination can be made differently according to the personal experiences of spectators.

• 한국조경학회지
• /
• 제44권1호
• /
• pp.66-79
• /
• 2016

본고는 정원 공간에 내재된 시간의 다원성에 대해 역대 시공간 이론을 다루면서 정원 공간에 적합한 시공간 이론 구축을 시도하였다. 구축된 이론을 바탕으로 문헌 분석을 통해 데릭 저먼의 정원을 대상으로 정원 공간의 객관적인 시간과 주관적인 시간, 이 두 가지에 초점을 두어 정원 공간의 내밀성을 분석하였다. 정원 공간에 속하는 시간을 객관적인 시간과 주관적인 시간으로 구분하였는데, 객관적인 시간은 생태적인 시간, 즉 지속성을 갖는 양화된 시간을 말하는 것이고, 주관적인 시간은 인간 주체의 의식에 따라 변하는 시간을 가리킨다. 또한 인간 주체의 감각에 의해 감정화된 시간도 포함한다. 우선 객관적인 시간의 관점에서 저먼의 정원 공간에 대해 해석하였다. 객관적인 시간 안에서 정원의 현재 공간 속에 저먼 개인의 감정에 따라 정원은 하나의 감성 공간으로 변모하면서 공간의 다층적인 속성을 보인다. 따라서 객관적인 시간 속에 존재하는 정원 공간은 결국 객관적이지 않고 인간 주체의 능동적인 감수에 따라 변모한다. 다음으로 주관적인 시간의 관점에서 저먼의 정원 공간을 고찰하였다. 저먼의 추억 속에 잠긴 정원 공간과 미래의 허상 속에서 연출되는 정원 공간은 저먼의 상상이나 자각에 따라 풍부한 의미를 내포한 공간으로 형성된다. 그러므로 주관적인 시간 속에서 정원 공간은 저먼의 의식에 따라 변모한다. 이상 연구를 통해 시간이 객관적인가 주관적인가의 여부에 관계없이 정원 공간은 물리적인 공간의 존재를 넘어서 인간주체의 의식이나 감정에 따라 무한한 공간을 연출할 수 있다는 것을 밝혔다. 정원 공간은 도시 공간과 달리 독특한 내밀성을 지닌 공간이기 때문에 본고는 기존의 정원 연구방법과 다른 시도를 통해 정원 공간의 독특성을 제시하여 보았다.

• Journal of Astronomy and Space Sciences
• /
• 제30권3호
• /
• pp.193-206
• /
• 2013

The detector subsystem of the Optical Wide-field Patrol (OWL) network efficiently acquires the position and time information of moving objects such as artificial satellites through its chopper system, which consists of 4 blades in front of the CCD camera. Using this system, it is possible to get more position data with the same exposure time by changing the streaks of the moving objects into many pieces with the fast rotating blades during sidereal tracking. At the same time, the time data from the rotating chopper can be acquired by the time tagger connected to the photo diode. To analyze the orbits of the targets detected in the image data of such a system, a sequential procedure of determining the positions of separated streak lines was developed that involved calculating the World Coordinate System (WCS) solution to transform the positions into equatorial coordinate systems, and finally combining the time log records from the time tagger with the transformed position data. We introduce this procedure and the preliminary results of the application of this procedure to the test observation images.