This study was designed to evaluate the sensory-perception and it's relation to activi- ties of daily living in stroke patients. The subjects were who had been treated at the Yonsei University Rehabilitation Hospital from march. 2, 1996 to oct. 10,1996. Sensory-Perception was measured by several test for evaluating wide range of per- ception and sensation(proprioceptipn). These test were MVPT, The Line Bisection Test, Bodyscheme & Body image Test, clinical test for proprioception and FIM(Functional Independence Measure) to evaluate activities of daily living. The results were as follows: 1. Visual perception and ADL( total& sub) scores were correlated significantly. 2. ADL(total& sub)scores were significantly different among groups which had been devided with sensory-perceptual function. 3. The factors significantly influencing total score and subscore of ADL were visual percept ion and sensory percept ion. From the results, it is necessary to emphasize the improvemet of sensory-perceeption besides visual perception in order to enhance ADL and functional level in stroke patients.

A previously unreported sedimentary complex has recently been discovered in the northern part of Choˇnsu Bay. It overlies both unconformably the Precambrian low-grade metamorphosed sedimentary sequence(Taean Formation) and the Jurassic biotite granite. The sedimentary complex is proposed to be designated as Choˇnsuman Formation. The Formation is composed of conglomerate, tuff, basalt, tuffbreccia, and shale. It is distributed in the northwest and northeast coasts of Choˇnsu Bay and in the Chukdo. Age of the Formation seems to be of late Mesozoic. The Choˇnsu sedimatary basin is considered to be originated by block faulting presumably during the Cretaceous, as suggested by the development of N-S trending structural lineation in the study area and its vicinity. The Chonsuman Formation seems to be formed by sedimantation in close association with block faulting and volcanic activities nearby. Sedimentation is thought to be developed from west to east in the basin.

An attenuation profile of young uppermost oceanic crust was obtained using ocean bottom seismometers and explosive sources detonated near the ocean bottom. The quality factor (Q) increased from 6 at the sea floor to 50 at a depth of 500 m. The mechanisms of high attenuation obtained in this experiments was inferred by examining several attenuation mechanisms such as frictional dissipation, viscous shear flow, liquid squirt mechanism and scattering by small pores and large cracks. Comparison of the attenuation value in this experiment and those from other experiments was also used to clarify the mechanism of the high attenuation. Of those mechanisms mentioned above, frictional dissipation, viscous shear flow and scattering do not seem to be the cause of the high attenuation in the uppermost oceanic crust where many small pores and large scale cracks are developed. The most viable mechanism in the young uppermost oceanic crust seems to be liquid squirt mechanism.

해양지각이 생성되는 중앙해령의 지진파의 속도구조와 공극을 가진 암석의 탄성이론을 이용하여 해양지각 상부의 공극률과 공극의 모양을 조사하였다. 해양지각 최상부에서 지진파의 속도는 공극이 전혀없는 현무암의 지진파의 속도(약 6㎞/sec)에 비해 대단히 낮고 (2.6㎞/sec) 이 속도는 상부지각 500m 내에서 급속히 증가하여 4.8㎞/sec에 달한다. Hashin-Strickman의 최고최저 공극률범위이론, Watt의 일관성이론(self-consistency theory), 그리고 Toksoz의 비상호작용이론(non-interactive theory)를 적용하면 상부지각 500m에서 지진파의 급속한 증가는 지각 최상부의 20-40%의 큰 공극률이 지하로 내려감에 따라 압력의 증가로 약 10%로 급속히 감소하는 것으로 설명될 수 있다. 지하 500m에서 2㎞사이에서는 중앙해령과 평행한 방향으로의 지진파의 속도(6㎞/sec)가 중앙해령과 수직한 방향의 지진파의 속도(5.4㎞/sec)보다 빠른데 이는 중앙해령과 평행한 방향으로 발달한 납작한 모양의 공극에기인하는 것으로 사료된다. 공극을 가진 암석의 탄성이론에 의하면 공극의 종횡률(aspect ratio)이 10^(-1)∼10³정도이면 1-3%의 낮은 공극률로도 중앙해령 상부지각에 나타난 지진파의 방향성(anisotropy)을 설명할 수 있다.

The gravity anomaly of the southern part of the Gyeongsang basin and the adjacent sea is analyzed. According to the power spectrum analysis method, calculated the mean depth of the moho and the boundary between the sedimentary layer and the basements is 32㎞ and 61㎞ respectively. With these values, regional and residual anomalies of the gravity for each depth are calculated by the running average method and interpreted. By the sin X/X method, the crustal thickness and the depth of the boundary of the sedimentary layer in the southern part of the Gyeongsang basin turns out to vary from 34㎞ to 28㎞ and from 8.5㎞ to 0.5㎞ respectively.