Digital Commons Network^™

Spreadsheet Engineering: A Research Framework, Thomas A. Grossman Jr.

Business Analytics and Information Systems

Spreadsheet engineering adapts the lessons of software engineering to spreadsheets, providing eight principles as a framework for organizing spreadsheet programming recommendations. Spreadsheets raise issues inadequately addressed by software engineering. Spreadsheets are a powerful modeling language, allowing strategic rapid model change, and enabling exploratory modeling. Spreadsheets users learn slowly with experience because they focus on the problem domain not programming. The heterogeneity of spreadsheet users requires a taxonomy to guide recommendations. Deployment of best practices is difficult and merits research.

Photoelectron Spectroscopy Of Clh2 - And Cld2 -: A Probe Of The Cl+H2 Van Der Waals Well And Spin-Orbit Excited States, Michael J. Ferguson, Giovanni Meloni, Harry Gomez, D M. Neumark

Chemistry Faculty Publications

Photoelectron (PE) spectra of ClH−2 and ClD−2 were measured at 299 nm (4.154 eV). Photodetachment of these anions accesses the prereactive van der Waals well on the ground stateCl+H2potential energy surface, as well as the low-lying spin–orbit excited states resulting from the interaction of Cl and Cl* with H2. The PE spectra are dominated by two relatively narrow peaks corresponding to transitions to the neutral Cl⋅H2 and Cl*⋅H2 complexes. The energetics and widths of these features are interpreted in terms of the properties of the anion and neutral potential energy surfaces.

Energy Balance Closure At Fluxnet Sites, Kell Wilson, Allen Goldstein, Eva Falge, Marc Aubinet, Dennis D. Baldocchi, Paul Berbigier, Christian Bernhofer, Reinhart Ceulemans, Han Dolman, Chris Field, Achim Grelle, Andreas Ibrom, B. E. Law, Andy Kowalski, Tilden Meyers, John Moncrieff, Russ Monson, Walter Oechel, John Tenhunen, Shashi Verma, Riccardo Valentini

School of Natural Resources: Faculty Publications

A comprehensive evaluation of energy balance closure is performed across 22 sites and 50 site-years in FLUXNET, a network of eddy covariance sites measuring long-term carbon and energy fluxes in contrasting ecosystems and climates. Energy balance closure was evaluated by statistical regression of turbulent energy fluxes (sensible and latent heat (LE)) against available energy (net radiation, less the energy stored) and by solving for the energy balance ratio, the ratio of turbulent energy fluxes to available energy. These methods indicate a general lack of closure at most sites, with amean imbalance in the order of 20%. The imbalance was prevalent …

Vadose Zone Processes And Chemical Transport, H. M. Gaber, Steven Comfort, Patrick J. Shea, Thomas A. Machacek

School of Natural Resources: Faculty Publications

Permeable zerovalent iron (Fe⁰) barriers have become an estab- lished technology for remediating contaminated ground water. This same technology may be applicable for treating pesticides amenable to dehalogenation as they move downward in the vadose zone. By conducting miscible displacement experiments in the laboratory with metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl) acetamide; a chloroacetanilide herbicide] under unsaturated flow, we provide proof-of-concept for such an approach. Transport experiments were conducted in repacked, unsaturated soil columns attached to vacuum chambers and run under constant matrix potential (-30 kPa) and Darcy flux (approximately 2 cm d^-1 ). Treatments included soil …

Land Surface Dynamics In Kazakhstan: Dynamic Baselines And Change Detection, Geoffrey M. Henebry, Kirsten M. De Beurs, Anatoly A. Gitelson

School of Natural Resources: Faculty Publications

Analysis of the spatio-temporal structure of NDVI in the Pathfinder AVHRR Land data set for Kazakhstan from 1981-1999 reveals significant changes in the distributions of the scale of fluctuation (SOF) before and after 1992 in some ecoregions at certain phases of the growing season. These differences are likely due to actual influences on the land surface and not changes in sensor characteristics. Further analysis is required to identify and quantify these influences.

Realtime Data Filtering Models For Air Temperature Measurements, Kenneth G. Hubbard, X. Lin

School of Natural Resources: Faculty Publications

Air temperature measurement biases caused by solar radiation and ambient wind speed are well-known. However, realtime air temperature filtering models are essential for generating homogeneous climate data by transforming one air temperature measurement system into another, and correcting in-situ air temperature biases especially for non-aspirated radiation shield systems. This study investigated the air temperature biases caused in the commonly used radiation shields in the United States, including the ASOS, MMTS, Gill, CRS, ASP-ES, and NON-ASPES shields along with corresponding temperature sensors. The realtime air temperature filtering models developed for each air temperature system are capable of removing the solar radiation …

Novel Algorithms For Remote Estimation Of Vegetation Fraction, Anatoly A. Gitelson, Yoram J. Kaufman, Robert Stark, Don Rundquist

School of Natural Resources: Faculty Publications

Spectral properties of a wheat canopy with vegetation fraction (VF) from 0% to 100% in visible and near-infrared (NIR) ranges of the spectrum were studied in order to devise a technique for remote estimation of VF. When VF was < 60%, from emergence till middle of the elongation stage, four distinct, and quite independent, spectral bands of reflectance existed in the visible range of the spectrum: 400 to 500 nm, 530 to 600 nm, near 670 nm, and around 700 nm. When VF was between 60% and 100%, reflectance in the NIR leveled off or even decreases with an increase of VF. The decreased reflectance in the NIR, occurring at or near the midseason, can be a limiting factor in the use of that spectral region for VF estimation. It was found that for VF > 60%, the information content of reflectance spectra in visible range can be expressed by only two independent pairs of spectral bands: (1) the blue from 400 to 500 nm and the red near 670 nm; (2) the green around 550 nm and the red edge region near 700 nm. We propose using only the visible range of the spectrum to quantitatively …

2002 Bridgewater Annual Town Report, The Town Of Bridgewater

Bridgewater Annual Town Reports, 1847-2020

No abstract provided.

Msu Update, 2002, Office Of Communications & Marketing, Morehead State University.

Communications and Marketing Publications Archive

MSU Update Newsletters for 2002.

The Lion 2002, Langston University

LU Yearbooks, 2000-2009

No abstract provided.

Identification Of Potential Economic Impacts Of President Bush’S National Energy Policy And Kyoto Fo, Randy Childs, William Reece

Bureau of Business & Economic Research

No abstract provided.

West Virginia Outlook 2003, George Hammond

Bureau of Business & Economic Research

No abstract provided.

The Tomokan Yearbook 2002, Rollins College Students

The Tomokan

Rollins College's yearbook for the Class of 2002.

Orts 62, 2002, The George Macdonald Society

Orts: The George MacDonald Society Newsletter

It is always a pleasure to find a contemporary book, pamphlet or magazine article previously unrecorded in the bibliographies. Recently I came across-'The Elocutionist' with a portrait of George MacDonald on the cover and two poems for recitation within its pages: 'Abu Midjan' and 'After an Old Legend' - both from 'Parables and Ballads' (being Vol. IV of 'Works of Fancy and Imagination’ 1871). It is good to know that the public at large were introduced to MacDonald's poetry in this way. I have practised reciting the poems (on my own) and would agree that they are worth reading out …

Orts 61, 2002, The George Macdonald Society

Orts: The George MacDonald Society Newsletter

The Society was founded in 1980, seventy-five years after MacDonald's death in 1905. It exists to celebrate and promote the works of George MacDonald and provide a forum for the exchange of views and information about his life and work.

Members of the Society receive the quarterly newsletter Orts (meaning 'scraps') and the annual journal, North Wind. There are annual one-day conferences for members in varying locations throughout Britain.

The Prince William Sound Risk Assessment, Jason R. W. Merrick, Van Dorp Rene J., Thomas Mazzuchi, John R. Harrald, John E. Spahn, Martha Grabowski

Statistical Sciences and Operations Research Publications

After the grounding of the Exxon Valdez, and its subsequent oil spill, all parties with interests in Prince William Sound (PWS) were eager to prevent another major pollution event. While they implemented several measures to reduce the risk of an oil spill, the stakeholders disagreed about the effectiveness of these measures and the potential effectiveness of further proposed measures. They formed a steering committee to represent all the major stakeholders in the oil industry, in the government, in local industry and among the local citizens. The steering committee hired a consultant team, who created a detailed model of the PWS …

Electronic-Structure-Based Investigation Of Magnetism In The Fe8 Molecular Magnet, Mark R. Pederson, Jens Kortus, S. N. Khanna

Physics Publications

We have performed density-functional-based electronic structure calculations on a single Fe8 molecular nanomagnet. Our calculated total moments and local moments are in excellent agreement with experiment. By including spin–orbit coupling we determine the easy, medium, and hard axes and find the ordering of the principle axes also agrees with experiment. From our calculated anisotropy Hamiltonian, we calculate the oscillations in the tunnel splittings and compare to the experimental results.

Caging Of Ni Clusters By Benzene Molecules And Its Effect On The Magnetism Of Ni Clusters, B. K. Rao, P. Jena

Physics Publications

Global optimization of the geometry of small Ni clusters interacting with benzene molecules yields equilibrium structures where the Ni atoms find themselves caged between the benzene molecules. This leads to quenching of the Ni magnetic moment in most of the complexes even though the structure of the caged Ni clusters remain relatively unchanged from their otherwise free gas phase geometry. The accuracy of these predictions, based on density functional theory with generalized gradient approximation for exchange and correlation, is established by the good agreement achieved between the calculated and available experimental dissociation energies and ionization potentials.

Spectroscopy Of Ni-N(Benzene)(M) Anion Complexes, B. K. Rao, P. Jena

Physics Publications

Total energy calculations based on the generalized gradient approximation to the density functional theory reveal that the Ni(benzene) and Ni(benzene)2 anions are unstable against autodetachment of the additional electron while other anion complexes containing more than one Ni atom are stable. Although the adiabatic electron affinities increase with Ni content, they are significantly smaller than those in pure Ni clusters containing the same number of Ni atoms. The difference between adiabatic electron affinities and vertical detachment energies are around 0.2 eV in most cases, indicating that the equilibrium geometries of Nin(benzene)−m are not significantly altered from their corresponding neutral geometries. …

Magnetic Moment And Anisotropy In Fencom Clusters, J. Kortus, T. Baruah, M. R. Pederson, C. Ashman, Shiv N. Khanna

Physics Publications

Electronic structure calculations of FenCom (n+m=5 and 13) are used to examine the effects of alloying on the magnetic moment and magnetic anisotropies. Our density-functional studies show that many mixed clusters have moments comparable to or higher than the pure clusters. The mixed clusters, however, have very low anisotropies and could be ideal as soft magnetic materials. It is shown that shape, composition, and compositional ordering must be considered for optimization of anisotropy energies.

The Redwood, V.98 2001-2002, Santa Clara University

The Redwood

No abstract provided.

Applications Of Graph Theory To Separability, Stephen Young

Mathematical Sciences Technical Reports (MSTR)

Let S be a surface with a triangular tiling T. Let R be a reflection a side of one of the triangles; so that R is an orientation reversing isometry of the surface. Define M = {s in S |S : Rs = s}. We then say that the surface S separates along the reflection R if S-R has two components. This paper considers the applications of graph theoretic methods to determining whether a reflection is separating or not and compares the algorithmic efficiency of these methods to the current known methods.

2002 Acropolis, Whittier College

Acropolis (Yearbook)

2002 Acropolis yearbook for Whittier College.

On Size Mappings, W. J. Charatonik, Alicja Samulewicz

Mathematics and Statistics Faculty Research & Creative Works

A real-valued mapping r from the hyperspace of all compact subsets of a givenmetric space X is called a size mapping if r({x}) = 0 for x ∈ X and r(A) ≤ r(B) if a ⊂ B. We investigate what continua admit an open or a monotone size mapping. Special attention is paid to the diameter mappings.

Chiasmodontidae: Swallowers., J. D. Mceachran, Tracey Sutton

Marine & Environmental Sciences Faculty Reports

No abstract provided.

Modeling Survival For Unthinned Slash Pine Plantations In East Texas Under The Influence Of Non-Planted Tree Basal Area And Incidence Of Fusiform Rust, Young-Jin Lee, Dean W. Coble

Articles

A stand level survival model for unthinned slash pine (Pinus elliotti!) plantations in east Texas was developed that incorporates density of non-planted tree basal area per hectare competition and the incidence of fusiform rust (Cronartium quercuum). Survival data on planted slash pine trees were collected on 197 permanent research plots that represent a broad range of site, age, and competitive status combinations. A system of two equations was fit to the survival data using simultaneous nonlinear regression. All model parameters were significant at the 0.05 probability level. The model showed that the number of surviving planted slash pine trees decreased …

Fuel Loading Prediction Models Developed From Aerial Photographs Of The Sangre De Cristo And Jemez Mountains Of New Mexico, Usa, Kelly Scott, Brian P. Oswald, Kenneth W. Farrish, Daniel Unger

Faculty Publications

Fuel load prediction equations that made use of aerial photographs were developed for Mixed Conifer, Ponderosa Pine (Pinus ponderosa Dougl. ex Laws.) and Pinyon-Juniper (Pinus edulis Engelm.)-(Juniperusmonosperma Engelm.) cover types from one-time measurements made in the Santa Fe watershed (SFWS) located in the Sangre de Cristo Mountains of northern New Mexico, and at Los Alamos National Laboratory (LANL) located in the Jemez Mountains of northern New Mexico. The results of the watershed data set were favorable and exhibited a high degree of relative accuracy. The results from the LANL data set did not share the same degree of accuracy, …

Selected Reflection Imaging: A Useful Tool For Imaging Nanocomposite Magnetic Materials, Yi Liu, Y. Qiang, M. Yu, J. Ping Liu, David J. Sellmyer

David Sellmyer Publications

The great strength of transmission electron microscope (TEM) is its capability to access to both real space (imaging) and reciprocal space (diffraction). Selected reflection imaging (SRI) can relate the diffraction of nanostructured materials with the image, providing information otherwise not possible. The experimental set up of SRI is given by Liu and Sellmyer [I]. In this paper we present some new measurements on nanocomposite magnetic materials.

Developing Industrial Ecosystems: Approaches, Cases, And Tools, Marian Chertow, Michelle Portlock

Yale School of the Environment Bulletin Series

No abstract provided.

Global Environmental Governance: Options & Opportunities, Daniel C. Esty, Maria H. Ivanova

Yale School of the Environment Publications Series

No abstract provided.