Browsing Department of Civil and Environmental Engineering by Title

Now showing items 203-222 of 242

    • Spatial Analysis of Storm Depths from an Arizona Raingage Network 

      Fennessey, Neil M.; Eagleson, Peter S.; Qinliang, Wang; Rodriguez-Iturbe, Ignacio (Cambridge, Mass : Ralph M. Parsons Laboratory, Hydrology and Water Resource Systems,Dept. of Civil Engineering, School of Engineering, Massachusetts Institute of Technology, 1986-08)
      Eight years of summer rainstorm observations are analyzed by a dense network of 93 raingages operated by the U. S. Department of Agriculture, Agricultural Research Service, in the 150 km Walnut Gulch experimental catchment ...

    • Spatial Poisson Models of Stationary Storm Rainfall: Parameterization, Evaluation and Numerical Simulation 

      Fennessey, Neil M.; Qinliang, Wang; Eagleson, Peter S.; Rodriguez-Iturbe, Ignacio (Cambridge, Mass : Ralph M. Parsons Laboratory, Hydrology and Water Resource Systems, Dept. of Civil Engineering, School of Engineering, Massachusetts Institute of Technology, 1986-08)
      Eight years of summer raingage observations are analyzed for a dense, 93 raingage, network operated by the U.S. Department of Agriculture, Agricultural Research Service, in the 150 km2 Walnut Gulch catchment near Tucson, ...

    • Spillway Analysis in Dam Safety Evaluation 

      Langseth, David E.; Perkins, Frank E. (Cambridge, Mass. : Ralph M. Parsons Laboratory, Hydrology and Water Resource Systems, Massachusetts Institute of Technology, Dept. of Civil Engineering, 1984-12)
      This work develops, tests, and applies a non-dimensional flood damage model which includes both overtopping and non-overtopping dam failures. The model represents a catchment, reservoir, dam, channel, and damage site. Peak ...

    • Staged Diffusers in Shallow Water 

      Almquist, Charles W.; Stolzenbach, Keith D. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1976-06)
      The discharge of waste heat from electric power plants into natural water bodies has the potential for adversely affecting the aquatic ecology of the receiving water. Because each discharge site has its own physical and ...

    • A Statistical Linearization Approach to Real Time Nonlinear Flood Routing 

      Georgakakos, Konstantine P.; Bras, Rafael L. (Cambridge, Mass. : Massachusetts Institute of Technology, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, 1980-06)

    • A Stochastic Dynamic Programming Model for the Operation of the High Aswan Dam 

      Alarcon, Luis F.; Marks, David H. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1979-11)
      With the construction of the High Aswan Dam in Egypt, reliable irrigation throughout the whole year and the use of water for the generation of a high percentage of the electricity needs of the country are possible. Moreover, ...

    • Stochastic Modeling of Groundwater Systems 

      Gelhar, Lynn W.; Ko, Peter Y.; Kwai, Herman H.; Wilson, John L. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1974-09)
      This research developed important new results on the use of spectral analysis techniques to evaluate groundwater resources. The linear theory of aquifer spectral response in the frequency domain is developed, including ...

    • Study of a Real-time Adaptive Closed-loop Control Algorithm for Reservoir Operation 

      Buchanan, Ross B.; Bras, Rafael L. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Department of Civil Engineering, Massachusetts Institute of Technology, 1981-07)
      Recent studies on the optimal control of the High Aswan Dam in Egypt have illustrated the usefulness of steady-state stochastic dynamic programming techniques for deriving optimal release policies. This work likewise uses ...

    • Subscale Steam Tests of Vapor Supression Pool Mixing and Circulation with Application to the Shoreham Nuclear Power Station 

      Adams, E. Eric; Baker, Richard M. (Cambridge, MA. : Ralph M. Parsons Laboratory, Hydrodynamics and Coastal Engineering, Massachusetts Institute of Technology, Dept. of Civil Engineering, 1981-12)
      This report addresses the temperature distribution induced within a suppression pool by a steam discharge. The problem is first examined theoretically to identify the dominant zones and to estimate circulation and mixing ...

    • Supplementary Information for Comparative Pavement Life Cycle Assessment and Life Cycle Cost Analysis 

      Swei, Omar; Xu, Xin; Noshadravan, Arash; Wildnauer, Margaret; Gregory, Jeremy; e.a. (MIT Concrete Sustainability Hub, 2014-07)
      The MIT Concrete Sustainability Hub (CSHub) is conducting life cycle environmental and cost analyses of pavements under a wide range of contexts. The analyses involve the comparison of new asphalt concrete (AC) and portland ...

    • Surface Area Variability of the Bahr el Ghazal Swamp in the Presence of Perimeter Canals 

      Gaudet, Sharron C.; Eagleson, Peter S. (Cambridge, Mass. : Dept. of Civil Engineering, Massachusetts Institute of Technology, 1984-06)

    • SWAHP: A Soil Water and Heat Parameterization 

      Milly, P. Christopher D. (Cambridge, Mass. : Ralph M. Parsons Laboratory, Hydrology and Water Resource Systems, Massachusetts Institute of Technology, Dept. of Civil Engineering, 1983-02)
      SWAHP is an efficient algorithm for prediction of moisture and heat fluxes across a bare soil surface. Surface moisture flux is calculated using the time compression assumption in conjunction with special solutions of the ...

    • Technology and Policy Issues Involved in the Boston Harbor Cleanup 

      Morrissey, Shawn P.; Harleman, Donald R. F. (Cambridge, Mass. : Ralph M. Parsons Laboratory, Hydrodynamics and Coastal Engineering, Hydrology and Water Resource Systems, 1989-11)
      Introduction: Throughout history, disposing of human wastes has been a problem. In the late 1800's, when communities began to flourish, it was generally believed that human waste was the source of many diseases. The principal ...

    • A Test of Ecological Optimality for Semiarid Vegetation 

      Salvucci, Guido D.; Eagleson, Peter S. (Cambridge, Mass. : Ralph M. Parsons Laboratory, Hydrology and Water Resource Systems, Massachusetts Institute of Technology, Dept. of Civil Engineering, 1992-05)
      Three ecological optimality hypotheses (Eagleson, 1978 and 1982) which have utility in parameter reduction and estimation in a climate-soil-vegetation water balance model are reviewed and tested. The first hypothesis ...

    • Theoretical and Experimental Investigation of Emergency Heat Releases from Floating Nuclear Power Plants 

      Jirka, Gerhard H.; Wood, Duncan W.; Harleman, Donald R. F. (Cambridge : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1975-11)
      A combined analytical and experimental study is made of the hydrodynamic and heat transport aspects of transient heat releases during emergency cooling operations at floating nuclear power plants located in protective ...

    • Three-dimensional Flow in Random Porous Media 

      Ababou, Rachid; Gelhar, Lynn W.; McLaughlin, Dennis (Cambridge, Mass. : Ralph M. Parsons Laboratory, Hydrology and Water Resource Systems, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1988-03)

    • Thyroid Hormone Receptor Mediates Transcriptional Activation and Repression of Different Promoters in vitro 

      JAMESON, J. LARRY; MADISON, LAIRD; MAGGE, SHEILA; DATTA, SHOUMEN (The Endocrine Society, 1992)
      The thyroid hormone receptor (TR) has the dual ability to activate or repress transcription of specific genes. A cell-free transcription system was used to study the effects of TR on transcription by positively (TREpMLP) ...

    • Thyroid Hormone Resistance Syndrome 

      Chatterjee, V. Krishna K.; Nagaya, Takashi; Madison, Laird D.; Datta, Shoumen; Rentoumis, Anne; e.a. (The American Society for Clinical Investigation, 1991-06)
      Thyroid hormone (T3) resistance is inherited in most cases in an autosomal dominant manner. The disorder is characterized by elevated free thyroid hormone levels and partial resistance to thyroid hormone at the cellular ...

    • Time Series Analysis of Cyclostat Data for the Determination of Cell Division Patterns in Phytoplankton Grown on Light/Dark Cycles 

      Slocum, Warren M. (Cambridge : Massachusetts Institute of Technology, Dept. of Civil Engineering, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, 1980)
      A method of data analysis employing digital filtering technique is described which has been used to smooth time series of cell density data from cyclostat experiments (Chisholm and Costello, 1980) and to estimate cell ...

    • Towards Understanding Cement Paste Creep: Implications from Glass Studies 

      Cao, Penghui; Yip, Sidney (MIT Concrete Sustainability Hub, 2017-01-04)
      This research brief presents foundational work toward understanding the mechanics of the complex process of creep by evaluating the phenomena occurring at the nano-scale in metallic glass, a model material, to better ...