Browsing Department of Civil and Environmental Engineering by Title
Now showing items 41-60 of 241
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Decision Support and Systems Interoperability in Global Business Management
(International Journal of Electronic Business Management, 2007)Globalization of business and volatility of financial markets has catapulted ‘cycle-time’ as a key indicator of operational efficiency in business processes. Systems automation holds the promise to augment the ability of ... -
The decision-making process in the design of residential structures
(MIT Concrete Sustainability Hub, 2015-03)Building codes and standards have been key drivers in shifting industry towards more energy efficiency, but it is important to take a more holistic approach toward GHG mitigation and evaluate the impact of design decisions ... -
A Derived Flood Frequency Distribution Based on the Geomorphoclimatic IUH and the Density Function of Rainfall Excess
(Cambridge, Mass. : Ralph M. Parsons Laboratory, Hydrology and Water Resource Systems, Massachusetts Institute of Technology, Dept. of Civil Engineering, 1983-07)The geomorphoclimatic theory is used, along with the joint probability density function of storm duration and storm intensity and the representation of the infiltration process, to derive the flood frequency distribution ... -
Description of and User's Manual for a Finite Element Aquifer Flow Model AQUIFEM-1
(Cambridge, Mass. : Massachusetts Institute of Technology, Dept. of Civil Engineering, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, 1980-02)A detailed user's and programmer's manual for "AQUIFEM-1," a versatile two-dimensional finite element model for groundwater flow, is presented. The model is based on the hydraulic equations of essentially horizontal flow, ... -
Design of a Closed Jet, Open Circuit Water Tunnel for the Study of Wake Mechanics
(Cambridge, Mass. : Hydrodynamics Laboratory, Dept. of Civil and Sanitary Engineering, Massachusetts Institute of Technology, 1958-04)This Technical Note describes the design of an open-circuit water tunnel with a 7-1/2 inch by 9 inch closed-jet working section. The maximum velocity obtainable in the empty test section is approximately 50 fps. The water ... -
The Design of Rainfall Networks in Time and Space
(Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1973-11)A methodology for the design of precipitation networks is formulated. The network problem is discussed in its general conception and then focus is made in networks to provide background information for the design of more ... -
The Diffusion of Two Fluids of Different Density in a Homogeneous Turbulent Field
(Cambridge, Mass. : Hydrodynamics Laboratory, Dept. of Civil and Sanitary Engineering, Massachusetts Institute of Technology, 1959-02)Introduction: Industrial communities situated near large bodies of water or in drainage systems connected with such bodies dispose their waste water after treatment by dilution. Disposal by irrigation or evaporation after ... -
Digital Transformation - IoT is a Metaphor
(2017-08-26)Digital Economics is approaching and the "new economy" will need new rules, new changes and new thinking. Digital Transformation is a step toward Digital Economy. In this article, we haven't even scratched the surface of ... -
Digital Twins
(2017-04-09)Multiple forms of digital transformation are imminent. Digital Twins represent one concept. It is gaining momentum because it may offer real-time transparency. Rapid diffusion of digital duplicates faces hurdles due to ... -
Digital Twins: Digital Twin Meets Digital Cousin
(2022-02-27) -
Digital-by-Design, AI and Digital Twins
(2016-09-29)Is there intelligence in artificial intelligence? Is IoT a digital-by-design metaphor? Is digital transformation based on the principles and practice of connectivity? Are the terms digital twin, digital duplicate and digital ... -
Dispersion of Pollutants in Estuary Type Flows
(Cambridge, Mass. : Hydrodynamics Laboratory, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1965-01)Much of the engineering literature has failed to show an understanding of the mechanism of longitudinal dispersion which arises in the one dimensional representation of pollution transport in turbulent shear flows. In the ... -
A Distributed Linear Representation of Surface Runoff
(Cambridge, Mass. : Hydrodynamics Laboratory, Department of Civil Engineering, Massachusetts Institute of Technology, 1969-06)A distributed quasi-linear model of direct catchment runoff is developed consisting of cascades of linear reservoirs connected by linear channels. By fitting to the kinematic wave, the model parameters are expressed in ... -
A Distributed, Physically-based, Rainfall-runoff Model Incorporating Topography for Real-time Flood Forecasting
(Cambridge, Mass. : Ralph M. Parsons Laboratory, Hydrology and Water Resource Systems, Massachusetts Institute of Technology, Dept. of Civil Engineering, 1990-10)We present a distributed, physically-based model of runoff generation in a catchment, for operational use in flood forecasting. The model accounts for both the infiltration-excess and saturation-excess mechanisms of runoff ... -
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 ...
