J. D. West

Indiana State University

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Papers

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Research Field

UNARM (Unattended and Remote Monitoring) an overview of Los Alamos activities

OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (2001)

K.R. Alvar A B Belian G.E. Bosler M. C. Browne S E Buck

Nonproliferation and nuclear safeguards activities by agencies such as the International Atomic Energy Agency (IAEA) and Japan Nuclear Cycle Development Institute (JNC) require the means to ensure that only authorized activities occur during periods when an inspector is not present. Unattended monitoring systems are designed to minimize human resource requirements both during inspection visits and in the period between visits via installation of a primarily automated monitoring system. This system is capable of meeting or exceeding human inspection reliability and consistency. Implementation of an unattended monitoring system should also provide less expensive continuous coverage of the inspected facility over the lifetime of the inspections when compared to the cost of inspector time and travel. Furthermore, a transition to remote monitoring systems, while decreasing cost and time burdens to an inspection agency, simultaneously provides for a unified safeguards approach that is not facility dependent. A second generation of unattended and remote monitoring (UNARM) systems has been developed at Los Alamos National Laboratory for use in nuclear fuel cycle facilities. These systems allow for more efficient use of inspection resources and more rigorous coverage of nuclear facilities. These systems incorporate several types of sensors that are capable of low-level intercommunication to enablemore » a comprehensive and multi-layered coverage of facility operations. These systems utilize data from radiation, motion, video, and balanced magnetic switch sensors, for example. When information from all sensors is combined together, an unambiguous reconstruction of facility operations can be assembled.« less

National laboratory

Radiation monitoring

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Older adults with cognitive complaints show brain atrophy similar to that of amnestic MCI

Neurology (2006)

Andrew J. Saykin Heather A. Wishart Laura A. Rabin Robert B. Santulli Laura A. Flashman

To examine the neural basis of cognitive complaints in healthy older adults in the absence of memory impairment and to determine whether there are medial temporal lobe (MTL) gray matter (GM) changes as reported in Alzheimer disease (AD) and amnestic mild cognitive impairment (MCI).Participants were 40 euthymic individuals with cognitive complaints (CCs) who had normal neuropsychological test performance. The authors compared their structural brain MRI scans to those of 40 patients with amnestic MCI and 40 healthy controls (HCs) using voxel-based morphometry and hippocampal volume analysis.The CC and MCI groups showed similar patterns of decreased GM relative to the HC group on whole brain analysis, with differences evident in the MTL, frontotemporal, and other neocortical regions. The degree of GM loss was associated with extent of both memory complaints and performance deficits. Manually segmented hippocampal volumes, adjusted for age and intracranial volume, were significantly reduced only in the MCI group, with the CC group showing an intermediate level.Cognitive complaints in older adults may indicate underlying neurodegenerative changes even when unaccompanied by deficits on formal testing. The cognitive complaint group may represent a pre-mild cognitive impairment stage and may provide an earlier therapeutic opportunity than mild cognitive impairment. MRI analysis approaches incorporating signal intensity may have greater sensitivity in early preclinical stages than volumetric methods.

Neuropsychological Assessment

Voxel-based morphometry

10.1212/01.wnl.0000234032.77541.a2

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Citations (551)

The aesthetic and endodontic dilemmas of calcific metamorphosis.

PubMed (1997)

J. D. West

Traumatic injuries to dentition can initiate either a resorptive or calcific pulpal response. In the sequelae of calcific degeneration, the clinical crown frequently becomes discolored, requiring an aesthetic correction to restore the tooth to its natural color. Four potential solutions are currently available to achieve this goal. The learning objective of this article is to describe the etiology of calcific metamorphosis, discuss the four potential solutions, and present the responses of endodontists polled as to the treatment indications. While the posterior dentition may experience the identical pathologic response to trauma and crown discoloration, this article focuses on the restoration of the anterior dentition. Several cases are presented to illustrate the four treatment modalities, and recommendations for follow-up of traumatic injuries are indicated.

Endodontist

Treatment modality

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Citations (20)

DISCUSSION OF 6420 & 6421. THE ANALYSIS OF STEEL DECKS WITH SPECIAL REFERENCE TO THE HIGHWAY BRIDGES AT AMARA & KUT IN IRAQ. THE NEW HIGHWAY BRIDGES ACROSS THE TIGRIS AT AMARA & KUT IN IRAQ.

ICE Proceedings (1961)

B Farago Wenchen Shan W E Gelson G A PLANK P S A BERRIDGE

Keywords ANALYSIS, STEEL, DECKS, HIGHWAYS, BRIDGES, RIVERS, COUNTRIES, DEVELOPING, GIRDERS, COMPOSITE, ACTION, INTERACTION, LONG SPAN, STRINGERS, PLATES, DESIGN, ECONOMICS, ORTHOTROPIC, WELDED, HIGH, TENSILE, FOUNDATIONS, BORED, PILES, LARGE, SPANS, BENOTO, UNDERWATER, CONCRETING, FABRICATION, SUPERSTRUCTURES, ASPHALT, PIERS, SHEETPILING, BOX, INTEGRAL, THIN, LAYERS, SURFACING, SHEAR, STRESS, WELDING AMARA, KUT, RIVER TIGRIS IRAQ, MIDDLE EAST... Show All

Orthotropic material

Laying

10.1680/iicep.1961.11532

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Visual exploration of genetic association with voxel-based imaging phenotypes in an MCI/AD study

Annual International Conference of the IEEE Engineering in Medicine and Biology Society (2009)

Sungeun Kim Li Shen Andrew J. Saykin J. D. West

Neuroimaging genomics is a new transdisciplinary research field, which aims to examine genetic effects on brain via integrated analyses of high throughput neuroimaging and genomic data. We report our recent work on developing an imaging genomic browsing system that allows for whole genome and entire brain analyses based on visual exploration and (2) applying the system to the imaging genomic analysis of an existing MCI/AD cohort. Voxel-based morphometry is used to define imaging phenotypes. ANCOVA is employed to evaluate the effect of the interaction of genotypes and diagnosis in relation to imaging phenotypes while controlling for relevant covariates. Encouraging experimental results suggest that the proposed system has substantial potential for enabling discovery of imaging genomic associations through visual evaluation and for localizing candidate imaging regions and genomic regions for refined statistical modeling.

Imaging genetics

Genome-wide Association Study

10.1109/iembs.2009.5332570

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Citations (2)

Shear-Wave Splitting in the Great Basin

AGUFM (2007)

J. D. West M. J. Fouch

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Citations (1)

DISCUSSION. THE DESIGN OF STRUCTURES IN RELATION TO MAINTENANCE AND INSPECTION.

ICE Proceedings (1953)

E K BRIDGE P S A BERRIDGE J S CAMPBELL J. D. West M A HENRY

Keywords DESIGN, STRUCTURES, MAINTENANCE, INSPECTION, BRIDGES, ECONOMICS, RAILWAYS, RECONSTRUCTION, SHORTAGES, MATERIALS, LABOUR, PAINTING, VENTILATION, DRAINAGE, ABUTMENTS, REPAIRS, CORROSION, WELDING, TIMBER, STEEL UK... Show All

Economic shortage

10.1680/ipeds.1953.11557

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A Latent-Trait Measurement Approach to the Assessment of Attention-Deficit/Hyperactivity Disorder (ADHD) in Children and Adolescents

J. D. West Stephen Houghton Myra F. Taylor

Attention deficit disorder

Trait

Attention deficits

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Short-Term versus Steady-State Crustal Deformation: Are Some Anomalies Driven by Transient Coupling with Mantle Flow? (Invited)

AGUFM (2010)

W. E. Holt M. J. Fouch L. M. Flesch Émilie Klein J. D. West

Transient (computer programming)

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Improving Equipment Maintenance—Switching from Corrective to Preventative Maintenance Strategies

Buildings (2024)

J. D. West Milind Siddhpura Ana Catarina Jorge Evangelista Assed Haddad

This paper explores different building maintenance strategies in commercial buildings in Sydney, Australia, focusing on corrective maintenance (CM) and preventive maintenance (PM). While CM involves rectifying issues after they occur, PM aims to enhance productivity by anticipating potential issues. Although PM seems more logical, the decision to implement this type of maintenance strategy are typically made based on item reliability, failure frequency, and downtime cost, commonly found in manufacturing facilities or critical environments. However, as found in the selected/surveyed commercial real estate buildings, CM was more frequently adopted in aged facilities with older infrastructure, and PM was favoured for buildings without structural deficiencies; however, operating equipment failures were common. However, in many cases, decision makers did not consider the broader effects of downtime beyond direct financial losses, costs associated with customer satisfaction, worker efficiency, rent abatements, and reputation damage. While each building is unique and may require a bespoke maintenance schedule, this study’s insights may help managers select the most appropriate maintenance strategy. Nonetheless, further research is needed to investigate the role of innovative technologies (such as machine learning and artificial intelligence) in enhancing maintenance efficacy and explore the influences of economic shifts, corporate and financial objectives, and the availability of technical resources.

Corrective maintenance

Proactive maintenance

10.3390/buildings14113581

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Citations (1)