지각판의 움직임은 오일러 극(Euler pole)을 중심으로 하는 회전운동으로 나타낼 수 있다. 우리는 먼저 지역적 지각판의 속도자료로부터 해당 판운동의 오일러 벡터를 근사적으로 결정하는 알고리즘을 다음과 같이 개발하였다; 1) 관측된 판속도자료로부터 평균 가상 오일러 극을 먼저 구하고, 2) 평균가상극과 관측지역의 중심을 통과하는 대원 위의 점들을 각각 극으로 설정하여, 3) 얻어지는 각 임시적 가상 모델의 판운동속도와 관측속도와의 차이의 제곱들의 합을 반복하여 구한 다음, 그 값이 최소가 되도록 보간법(interpolation)으로써 오일러 벡터를 결정함. 그런데 최근 우리는 이 와 근본적 개념은 같으나(최소제곱법), 제곱오차의 합의 편미분계수가 0이 되는 조건으로부터 곧바로 오일러 벡터를 결 정하는 알고리즘을 추가적으로 개발하였으며, 이 개선된 방법으로 판운동의 오일러 벡터를 보다 더 정확하게 산출하게 되었다. 한편 이 두 가지 방법을 최근 수년간의 한반도의 GPS 지각속도자료에 각각 적용하여 한반도 지각판의 오일러 벡터를 구하였으며, 얻어진 두 결과를 비교하였다.

대륙이동설로부터 시작되었고 이후 고지자기 및 해저퇴적물 등의 증거들에 의한 해저확장설을 통하여 정립된 판 구조론은, 지각의 운동을 몇 개의 강체 판들이 비록 느리지만 수억 년 이상의 긴 시간 동안 꾸준히 일어나는 움직임으로 서 설명하였다. 초기에는 지각판의 속도를 주로 수백만 년 동안의 고지자기 역전의 잔류 기록에 의거하여 판들 간의 상 대적 운동으로 추산하였는데, 1980년대 이후에는 우주측지 기법들을 이용하여 현재 시점의 판운동을 직접적으로 조사할 수 있게 되었고, 일부 지역에서 판의 변형이 일어나는 것도 확인하게 되었다. 본 해설에서는 (1) 초기의 상대적인 판운동 을 나타내는 모델들을 돌아보고, (2) 무회전 좌표계의 이론과 절대판운동 모델들을 요약-기술하며, (3) 판내부의 변형을 포함하는 최근의 모델을 소개하는 한편, (4) 국제 지구 기준계에 채택된 판운동 모델을 간략히 기술하였고, 끝으로 (5) 근 래에 보고된 남미, 남극, 유럽 등 몇 지역과 (6) 한반도 및 동북아의 지각판 움직임 연구를 각각 소개하였다.

The existing metal getters are invariably covered with thin oxide layers in air and the native oxide layer must be dissolved into the getter materials for activation. However, high temperature is needed for the activation, which leads to unavoidable deleterious effects on the devices. Therefore, to improve the device efficiency and gas-adsorption properties of the device, it is essential to synthesize the getter with a method that does not require a thermal activation temperature. In this study, getter material was synthesized using palladium oxide (PdOx) which can adsorb H2 gas. To enhance the efficiency of the hydrogen and moisture absorption, a porous layer with a large specific area was fabricated by an etching process and used as supporting substrates. It was confirmed that the moisture-absorption performance of the SiO2/Si was characterized by water vapor volume with relative humidity. The gas-adsorption properties occurred in the absence of the activation process.

조직행동연구에서 집단주의와 조직시민행동 간의 관계에 대해 많이 다루어진 데 비해, 상대적으로 근로자 언로와 조직시민 행동 간의 관계에 대한 연구는 이루어 지지 않았다. 따라서 이 연구는 조직에의 비공식적 기여(informal contribution)와 조직성과와의 관계성을 설명하기 위해 도입된 조직시민행동(organizational citizenship behavior)과 상향적 근로자 언로(voice), 수평적 근로자 언로와의 관계를 살펴보고자 하였다

Proportion of falling from height accident at construction work accounts for more than 40%, and the number of injuries is getting increased. So without considering falling from height, we can say that it's hard to achieve our goal(accident prevention). Another critical point that we have to think about theses days is the fact that construction workers are getting older. To be specific, the number of workers who are above 50 years old accounts for 65.6% among the fatalities(2007~2011, KOSHA inspection). Accordingly, to effectively prevent construction accedents, especially falls from height, we need to focus on motion analysis of older construction workers and then make suitable measures for growing accident rates at construction work.

As contemporary building construction type is getting higher and deeper, construction equipment usage is getting more, and related fatal accidents are on an increasing trend. Because of this, a method was drawn which could grasp the present state of construction equipment management and manage safety of the equipment more easily for accident prevention by choosing 2 kinds of Construction equipment which cause safety accident frequently among the equipment mainly used in construction site. This study suggested a method about construction equipment safety management using "smart phone" base which could be used in safety management for construction equipment by whomever in construction site. After attachment of QR code included safety checklist, It became possible that site managers could check more efficiently by scanning with their smart phone when they inspect equipment. Moreover, by the construction interested who didn't know what and how they have to inspect could point out unsafe condition in the early stage of equipment entering or take unsafe one out of the site by using new smart phone safety checking system is installed, it became possible that critical accident caused by construction equipment was prevented in advance.

As contemporary building construction type is getting higher and deeper,construction equipment usage is getting more, and related fatal accidents are on an increasing trend. In these days, due to the deteriorating construction business circumstance, job finding problem of equipment operator, and dumping contract, equipment lease suppliers are putin jeopardy. In high-rise building construction, especially tower crane, mobile elevated work platform and other High place operation cars among construction equipment cause many critical accidents because of drop supply of construction biding bringing out dumping contract could cause unsafe and poor construction management. Because of this, a method was drawn which could grasp the present state of construction equipment management and manage safety of the equipment more easily for accident prevention by choosing 2 kinds of Construction equipment which cause safety accident frequently among the equipment mainly used in construction site. This study suggested a method about construction equipment safety management using ‘‘smart phone’ base which could be used in safety management for construction equipment by whomever in construction site. After attachment of QR code included safety checklist, It became possible that site managers could check more efficiently by scanning with their smart phone when they inspect equipment. Moreover, by the construction interested who didn’t know what and how they have to inspect could point out unsafe condition in the early stage of equipment entering or take unsafe one out of the site by using new smart phone safety checking system is installed, it became possible that critical accident caused by construction equipment was prevented in advance.

We determined the precise three dimensional WGS84 Coordinates and the sea level height of Seoul Radio Astronomy Observatory (SRAO). In this study, we performed the simultaneous GPS observations at SRAO and Seoul GPS Reference Station(SGRS) of Korea Astronomy Observatory(KAO) for 3.5 hours from 17KST on October 27, 1999. We employed two different antennas, i.e., chokering antenna at SGRS of KAO and L1/L2 compact with groundplane antenna at SRAO. But we employed same type of receivers, i.e., Trimble 4000SSI at both observing places. The observed data were processed by GPSURVEY 2.30 software of Trimble with L1/L2 ION Free technique and broadcasting ephemeris of GPS Satellites because of very short baseline between SGRS of KAO and SRAO. We determined WGS84 latitude, longitude, height and the sea level height of SRAO with 37∘27′15.′6846N±0.′0004,126∘57′19.′0727E±0.′0002,204.89m±0.02m,181.38m±0.17m 37∘27′15.′6846N±0.′0004,126∘57′19.′0727E±0.′0002,204.89m±0.02m,181.38m±0.17m , respectively.