Browsing Department of Civil and Environmental Engineering by Title
Now showing items 55-74 of 238
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Effect of Wind-mixing on the Thermocline Formation in Lakes and Reservoirs
(Cambridge, Mass. : Massachusetts Institute of Technology, Dept. of Civil Engineering, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, 1979-11) -
The Effects of Annual Storage and Random Potential Evapotranspiration on the One-dimensional Annual Water Balance
(Cambridge : Massachusetts Institute of Technology, Dept. of Civil Engineering, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, 1980-02)An analysis is presented leading to the incorporation of storage terms into an existing first-order dynamic water balance. Annual change in storage in the unsaturated zone of an idealized soil column is included through ... -
The Effects of Inflation and Its Volatility on the Choice of Construction Alternatives
(MIT Concrete Sustainability Hub, 2011-08)Life Cycle Cost Analysis (LCCA) is the standard method for costing long-lived construction projects. The LCCA process determines the full costs of mutually exclusive construction options, finding the project design with ... -
The Effects of Trailing Edge Geometry and Chord Length on the Early Wake of Stationary Flat Plates
(Cambridge, Mass. : Hydrodynamics Laboratory, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1962-04)This report presents the results of an investigation of the average and fluctuating two-dimensional structure of the early wake of fixed, flat plates at zero mean angle of attack as a function of trailing edge configuration ... -
Elusive Quest for Interoperability
(World Customs Organization (WCO-OMD), Brussels, Belgium, 2006)Interoperability between systems and adequate operational transparency may help stem some of the frustration of businesses dealing with customs. On the other hand, customs must remain vigilant to ensure security through ... -
Empirical Temperature Forecasting: Extensions of the Model Output Statistics Method
(Cambridge, Mass. : Massachusetts Institute of Technology, Dept. of Civil Engineering, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, 1980-06)Deterministic models of complex natural phenomena such as streamflow or weather events are usually either unknown or unwieldy and thus are often augmented or replaced by stochastic or empirical models. For example, the ... -
Enclosed Rotating Disks with Superposed Throughflow: A Survey of Basic Effects
(Cambridge, Mass. : Dept. of Civil Engineering, Massachusetts Institute of Technology, 1962-06)A qualitative study was made of the flow field induced by an enclosed rotating disk with a radially outward throughflow superposed using air as the test fluid. The purpose of this survey is a determination of the range of ... -
Enclosed Rotating Disks with Superposed Throughflow: Mean Steady and Periodic Unsteady Characteristics of Induced Flow
(Cambridge, Mass. : Hydrodynamics Laboratory, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1964-04)This is a report of a study of enclosed rotating disks with radial outward throughflow superposed on the fluid motion induced by the disk. The report presents information on the flow mechanics in the axial clearance space ... -
Energy 2050: Bio-inspired Renewable Non-Fossil Liquid Fuel
(IJEBM, 2011-01)We propose an intelligent Energy Transparency model and a bio-inspired hypothetical mechanical mitochondria to optimize energy efficiency. iET seeks learning algorithms to build intelligence in order to pursue carbon-based ... -
Energy : Prudence vs Popularity
(2009-01-19)Two approaches to non-fossil energy manufacturing are suggested. This is an editorial-opinion that highlights why stimulating global economic growth and sustainable global peace are inextricably linked. Entrapment of world ... -
Energy Self-Sufficiency : Catalyst for Energy Agnostic Global Economy
(2011-04-15)ABSTRACT The concept of eAGE is easy to grasp if one appreciates the analogy of the distributed ability of computing at the hands of any individual who owns an iPad or notebook computer versus the ENIAC which weighed ... -
Entrainment in Diffusive Thermohaline Systems: Application to Salt Gradient Solar Ponds
(Cambridge, MA. : Ralph M. Parsons Laboratory, Hydrology and Water Resource Systems, Massachusetts Institute of Technology, Dept. of Civil Engineering, 1984-12)The development of a numerical model for simulating the temporal evolution of vertical temperature and salinity profiles in a salt gradient solar pond is described. The model uses a mixed-layer approach and a general ... -
Estimation of Effective Hydrologic Properties of Soils from Observations of Vegetation Density
(Cambridge, Mass. : Massachusetts Institute of Technology, Dept. of Civil Engineering, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, 1980-03)An existing one-dimensional model of the annual water balance is reviewed. Slight improvements are made in the method of calculating the bare soil component of evaporation, and in the way surface retention is handled. A ... -
Estimation of Stationary and Non-stationary Random Fields: Kriging in the Analysis of Orographic Precipitation
(Cambridge, Mass. : Massachusetts Institute of Technology, Dept. of Civil Engineering, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, 1980-04)The theory of kriging, an optimal linear estimation technique for spatial stochastic processes, is presented and applied to the estimation of mean areal precipitation under stationary and non-stationary mean assumptions. ... -
Eulerian-Lagrangian Analysis of Pollutant Transport in Shallow Water
(Cambridge, Mass. : Ralph M. Parsons Laboratory, Aquatic Science and Environmental Engineering, Massachusetts Institute of Technology, Dept. of Civil Engineering, 1984-06)A numerical method for the solution of the two-dimensional, unsteady, transport equation is formulated, and its accuracy is tested. The method uses a Eulerian-Lagrangian approach, in which the transport equation is divided ... -
Evaluation of Longitudinal Dispersivity from Tracer Test Data
(Cambridge, Mass. : Ralph M. Parsons Laboratory Hydrology and Water Resource Systems, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1989-03)Introduction: Mathematical modeling of solute transport has become a standard tool for evaluating the movement and spreading of chemical contaminants in the subsurface aquatic environment. Most frequently, numerical ... -
Evaluation of Techniques for Numerical Calculation of Storm Surges
(Cambridge Massachusetts Institute of Technology. Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, 1975-02)Two numerical models are employed to describe the water motion in a coastal region associated with the passage of a hurricane or severe storm. The first is two-dimensional, employs the vertically integrated or "tidal" ... -
Evaluation of the Albedo-induced Radiative Forcing and CO2 Equivalence Savings: A Case Study on Reflective Pavements in Four Selected U.S. Urban Areas
(2017-08-01)There is a growing interest in developing cool pavement strategies to mitigate pavement’s impact on the global warming in recent years. One of the mitigation strategies is by increasing the solar reflectance (or albedo) ... -
Extensions and Applications of a Second-order Landsurface Parameterization
(Cambridge, Mass. : Ralph M. Parsons Laboratory, Hydrology and Water Resource Systems, Massachusetts Institute of Technology, Dept. of Civil Engineering, 1983-07) -
Final Calibration of the Cooling Lake Model for North Anna Power Station
(Cambridge, Mass. : Ralph M. Parsons Laboratory, Aquatic Science and Environmental Engineering, Massachusetts Institute of Technology, Dept. of Civil Engineering, 1984-08)The North Anna Power Station is a two-unit power plant located on Lake Anna and operated by Virginia Electric and Power Company (VEPCO). A complex cooling lake system, involving a diked-off portion of Lake Anna - known as ...
