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The combined influence of the earthquakes and the widespread red-bed soft rock as fill material necessitates the increasing attention on the slope stability in the west region of Yunnan province. To determine the critical height of slope filled by such soft rock under seismic loading, this paper establishes a model simulating a fill slope based on the finite element method and the strength reduction theory. The influence of different slope configurations, including different slope ratios, heights, and side forms on the slope stability is analyzed, and with the stability factor equal or greater than 1.1 as designated in the specifications, the slope critical heights are back calculated. The results show: (1)seismic loading has a significant influence on the slope stability, although its decreasing magnitude slows down with the increase of the slope height.; (2)the fill slope 16m in height is most instable under seismic loading, so the slope at or greater than 16m high is not recommended; (3)whatever the loading forms on the slope, either under the gravity loading only or the combined gravity and seismic loadings, the linear slope is most instable, with increasing stability for concave and step slopes.

Abstract. There are many applications of Hadoop System in the field of large data, cloud computing. The test bench of storage and application in seismic network at Earthquake Administration of Tianjin use with Hadoop system, which is used the open source software of Ganglia to operate and monitor. This paper reviews the function, installation and configuration process, application effect of operating and monitoring in Hadoop system of the Ganglia system. It briefly introduces the idea and effect of Nagios software monitoring Hadoop system. It is valuable for the industry in the monitoring system of cloud computing platform.

This is to certify that the master's thesis of Jing Ding has met the thesis requirements of Iowa State University Signatures have been redacted for privacy lll TABLE OF CONTENTS LIST OF TABLES .

The widespread red-bed soft rock, characterized by its poor engineering properties as road building materials, plus the frequent large intensity earthquakes necessitates growing attention on the seismic design of cut slope in the west region of Yunnan province, China. To calculate the critical heights of the slope under seismic loading, a slope model is established and its dynamic response under seismic loading is analyzed by using Fast Lagrangian Analysis of Continua (FLAC3D)based on three-dimensional finite difference method .The reliability of the model is verified by comparing the analytical results with other relevant research results. The stability factors at different slope heights and ratios are gained; accordingly, back calculate the critical heights of the slope at different slope ratios under either the gravity loading only or combined with seismic loading, when the stability factor is equal or greater than 1.1. The above analysis helps provide seismic design guidance for the cut slopes of red soft rock in Yunnan province.