Art In Modeling Research Articles

Product Cost Management Structures: a review and neural network modelling

This paper reviews the growth of approaches in product costing and draws synergies with information management and resource planning systems, to investigate potential application of state of the art modelling techniques of neural networks. Increasing demands on costing systems to serve multiple decision-making objectives, have made it essential to use better techniques for analysis of available data. This need is highlighted in the paper. The approach of neural networks, which have several analogous facets to complement and aid the information demands of modern product costing, Enterprise Resource Planning (ERP) structures and the dominant-computing environment (for information management in the object oriented paradigm) form the domain for investigation. Simulated data is used in neural network applications across activities that consume resources and deliver products, to generate information for monitoring and control decisions. The results in application for feature extraction and variation detection and their implications are presented in the paper.

Science and Structure in Proust's 'A la recherche du temps perdu'

Introduction Maxims Correspondence between Art and Science Retroduction Hypothesis Modelling Knowledge as Revolution and Revelation Theory-laden souffrance Serendipity Bibliography Index

SONEX airborne mission and coordinated POLINAT‐2 activity: Overview and accomplishments

The SASS (Subsonic Assessment) Ozone and NOx Experiment (SONEX) was an airborne field campaign conducted in October–November 1997 in the vicinity of the North Atlantic Flight Corridor to study the impact of aircraft emissions on NOx and ozone (O3). A fully instrumented NASA DC‐8 aircraft was used as the primary SONEX platform. SONEX activities were closely coordinated with the European POLINAT‐2 (Pollution from Aircraft Emissions in the North Atlantic Flight Corridor) program, which used a Falcon‐20 aircraft. Both campaigns focused on the upper troposphere/“lowermost” stratosphere (UT/LS) as the region of greatest interest. Specific sampling goals were achieved with the aid of a state‐of‐the art modeling and meteorological support system, which allowed targeted sampling of air parcels with desired characteristics. A substantial impact of aircraft emissions on NOx, O3, and CN in the UT/LS of the study region is shown to be present. This mission provided direct support for the highly nonlinear nature of the NOx‐O3 chemistry. The results are being published in Special Sections of GRL and JGR. This overview provides a context within which these publications can be understood.

Preliminary analysis of the flow inside a three-port wave rotor by means of a numerical model

This study concerns the analysis of the unsteady flow inside an engine component named wave rotor. A numerical model has been developed by the authors for this purpose, using modern and efficient state of the art calculation methods and modelling. Then this model is validated by comparison with well established available analytical results. This allows us to simulate the flow inside a three-port wave rotor used as a pressure divider. Our comparisons with NASA experimental results on the pressure divider show that the model is well-suited for such types of flows. The off-design operation of the pressure divider wave rotor is finally analyzed versus the most important parameters and its operation limits are determined.

Tertiary Development of Heavy Oil Sands through Thermal Stimulation in the Wilmington Oil Field, California: A Geological Perspective: ABSTRACT

In 1995, a DOE cost share project was initiated to extend thermal recovery in the Tar Zone, Fault Block 11 of the West Wilmington Oil Field, California. The project involved the collection of old oil well data and the construction of a modern digital data base in order to develop a deterministic geological model. The plan was to rigorously define the geology such that horizontal wells could be accurately placed within the sands containing heavy oil to facilitate gravity drainage. A detailed deterministic geological model was constructed using a state of the art 3D mapping and modeling package. Beginning in July, 1995, five observation wells were drilled. Data inconsistencies were revealed when core hole OB2-003 was drilled. It was discovered that the data used to make the maps was corrupted; as a result, the predicted coring point was missed by more than 20'. Significant modifications to the data base were required due to inaccurate subsidence corrections in the original data set. Horizontal wells were then laid out based on the revised data and the geological model was completely reconstructed. Detailed cross sections extracted from the model were use for geosteering. These cross sections proved to be highly accurate and fivemore » more wells are now planned for the target sands. This detailed deterministic model will be further refined and combined with our geostatistical mode for geological control in an advanced reservoir simulator. If successful, the thermal stimulation project will be expanded to other fault blocks.« less

Reliability Analysis of Great Lakes Marine Diesels: State of the Art and Current Modeling

Some essential steps for the application of reliability, availability, and maintainability (RAM) techniques to marine diesel engines are presented. The paper begins with a summary of the basic concepts of reliability engineering, followed by a survey of the relevant literature on RAM applications to the marine industry and to marine diesel engines in particular. Next, the results of an informal survey of the reliability, maintenance, and replacement practices of Great Lakes operators are presented. Finally, the first two steps for a RAM application, failure modes and effects analysis and fault tree analysis, are introduced and applied for a prototype Colt-Pielstick marine diesel engine.

Reviews: Urban and Regional Planning Series, Volume 38. A Decision-Centred View of Environmental Planning, Architecture of the British Empire, the History and Design of the Australian House, the Railway Station: A Social History, Goodnight Campers! The History of the British Holiday Camp, Innovation, Entrepreneurs and Regional Development, Monographs on Soil and Resources Survey 12. Principles of Geographical Information Systems for

Reviews: Urban and Regional Planning Series, Volume 38. A Decision-Centred View of Environmental Planning, Architecture of the British Empire, the History and Design of the Australian House, the Railway Station: A Social History, Goodnight Campers! The History of the British Holiday Camp, Innovation, Entrepreneurs and Regional Development, Monographs on Soil and Resources Survey 12. Principles of Geographical Information Systems for

Art and Fashion Modeling

Art and Fashion Modeling