Abstract. The organization of drainage basins shows some reproducible phenomena, as exemplified by self-similar fractal river network structures and typical scaling laws, and these have been related to energetic optimization principles, such as minimization of stream power, minimum energy expenditure or maximum "access". Here we describe the organization and dynamics of drainage systems using thermodynamics, focusing on the generation, dissipation and transfer of free energy associated with river flow and sediment transport. We argue that the organization of drainage basins reflects the fundamental tendency of natural systems to deplete driving gradients as fast as possible through the maximization of free energy generation, thereby accelerating the dynamics of the system. This effectively results in the maximization of sediment export to deplete topographic gradients as fast as possible and potentially involves large-scale feedbacks to continental uplift. We illustrate this thermodynamic description with a set of three highly simplified models related to water and sediment flow and describe the mechanisms and feedbacks involved in the evolution and dynamics of the associated structures. We close by discussing how this thermodynamic perspective is consistent with previous approaches and the implications that such a thermodynamic description has for the understanding and prediction of sub-grid scale organization of drainage systems and preferential flow structures in general.
INTERACTIVE THERMODYNAMICS 3.0 DOWNLOAD
Note that mfold has been replaced by UNAFold, a software package that is much easier to install and run and that offers many more types of computations. Although UNAFold will install without mfold_util, the sir_graph and boxplot_ng programs from the mfold_util package are required in order to obtain structure plots and dot plots from UNAFold. Install mfold_util before installing UNAFold. Versions 3.4 and higher of mfold contains all of the non-interactive programs in mfold_util, so a separate download is not required. Download UNAFold here.
Version 3.6 (and earlier versions) of mfold for Unix, Linux and Mac OS X operating systems is available via a free license for academic and nonprofit use only; commercial use is available for a fee. Copyright is held by Washington University. Washington University seeks additional licensees for commercial development and marketing and invites all interested parties to submit proposals. Please direct all requests for licensing, information, and limited evaluation copies to Washington University's Office of Technology Management. Please send a copy of these requests to zukerm@alum.mit.edu. Daniel (Dianxiong) Zou Licensing Associate Office of Technology Management (OTM) Washington University in St. Louis 660 South Euclid Avenue, Campus Box 8013 Delivery (courier): 4240 Duncan Avenue - Suite 110 St. Louis, MO 63110 Office: 314.286.0629 Fax: 314.362.5872 OTM Website Email: Daniel Zou URL: otm.wustl.edu Version 3.6 of mfold contains the non-interactive programs from mfold_util version 4.6. It is no longer necessary to download and install mfold_util separately. A separate installation is only required if you wish to run the interactive programs in mfold_util. Questions about the code should be addressed to Professor Zuker at zukerm@alum.mit.edu.
Our interactive user interface enables the computation of both optimal and suboptimal structures. For a user defined sequence as well as recursion and traceback parameters, the dynamic programming table is provided along with a list of (sub)optimal structures. On selection, the according traceback is highlighted within the matrix. This is complemented with a graphical representation of the structure using Forna [44].
Note: The OPLS 2.0 parameters used in the above study were generated using Schrödinger Suite 2011. Parameters and structures for acenaphthylene (compound m78) and acenaphthene (compound m78_new) are also available for download below.
You are now visiting the interactive website for RMG, featuring web tools tohelp you visualize RMG-generated models, as well as tools to view and search the RMGdatabases for thermodynamics, transport, and kinetics data.
I cannot run PowerShell.exe interactively in a Cygwin rxvt or mintty terminal. Seems any session using a /dev/tty? or /dev/pts? pseudo terminal device. An instance using the junky windows console device /dev/console or /dev/cons? will work.
I've developed a powershell wrapper to call powershell scripts and commands from a Cygwin terminal session but cannot get the interactive option to work (if you give the wrapper no script or commands then you want to go interactive). see for info on the wrapper script. It works for most powershell.exe calls and even acts like a "she-bang" if used in the first line of the ps1 script.
The solution I've found is to use (main site) Proxy32 proxywinconsole.exe program. If this program is in the path, my poweshell.bash wrapper will call it which will let you work interactively with PowerShell. 2ff7e9595c
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