Using habitat suitability models for multiscale forensic geolocation analysis     

Haoyu Wang  Jennifer A. Miller  Tony H. Grubesic  Shalene Jha 《Transactions in GIS》2023,27(3):777-796

Pollen is one of the most durable environmental materials that law enforcement agencies recover as trace evidence from people and objects. Although links between objects and geographic locations are essential during legal investigations, the approach of using pollen and other microbial fingerprints to build these links in an analytical framework is still underutilized. This study uses bees as objects that are mobile and collects environmental traces as a test case to determine the efficacy of predictive geolocation efforts with recovered pollen and species distribution models at both subcontinental and global scales. Results demonstrate promising performance in both the predictive capability of species distribution models and identification of possible location history of bees at both study extents. When coupling pollen with other categories of evidentiary items, this geographic attribution framework can aid law enforcement personnel in refining investigation priorities and optimizing search strategies.  相似文献   

A Hybrid Geocoding Methodology for Spatio‐Temporal Data     

Alan T. Murray  Tony H. Grubesic  Ran Wei  Elizabeth A. Mack 《Transactions in GIS》2011,15(6):795-809

As tools for collecting data continue to evolve and improve, the information available for research is expanding rapidly. Increasingly, this information is of a spatio‐temporal nature, which enables tracking of phenomena through both space and time. Despite the increasing availability of spatio‐temporal data, however, the methods for processing and analyzing these data are lacking. Existing geocoding techniques are no exception. Geocoding enables the geographic location of people and events to be known and tracked. However, geocoded information is highly generalized and subject to various interpolation errors. In addition, geocoding for spatio‐temporal data is especially challenging because of the inherent dynamism of associated data. This article presents a methodology for geocoding spatio‐temporal data in ArcGIS that utilizes several additional supporting procedures to enhance spatial accuracy, including the use of supplementary land use information, aerial photographs and local knowledge. This hybrid methodology allows for the tracking of phenomenon through space and over time. It is also able to account for reporting inconsistencies, which is a common feature of spatio‐temporal data. The utility of this methodology is demonstrated using an application to spatio‐temporal address records for a highly mobile group of convicted felons in Hamilton County, Ohio.  相似文献   

GESE: a small UV space telescope to conduct a large spectroscopic survey of z∼1 Galaxies     

Sara R. Heap  Qian Gong  Tony Hull  Jeffrey Kruk  Lloyd Purves 《Astrophysics and Space Science》2014,354(1):211-214

One of the key goals of NASA’s astrophysics program is to answer the question: How did galaxies evolve into the spirals and elliptical galaxies that we see today? We describe a space mission concept called Galaxy Evolution Spectroscopic Explorer (GESE) to address this question by making a large spectroscopic survey of galaxies at a redshift, z～1 (look-back time of ～8 billion years). GESE is a 1.5-m space telescope with an ultraviolet (UV) multi-object slit spectrograph that can obtain spectra of hundreds of galaxies per exposure. The spectrograph covers the spectral range, 0.2–0.4 μm at a spectral resolving power, R～500. This observed spectral range corresponds to 0.1–0.2 μm as emitted by a galaxy at a redshift, z=1. The mission concept takes advantage of two new technological advances: (1) light-weighted, wide-field telescope mirrors, and (2) the Next-Generation MicroShutter Array (NG-MSA) to be used as a slit generator in the multi-object slit spectrograph.  相似文献   

    

Tony McMichael 《Global Change & Human Health》2002,3(1):3

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Topics. Pingos of Tuk     

Tony Waltham 《Geology Today》2003,19(6):212-215

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Gas Flows and Star Formation in the Ringed Galaxy NGC 4736     

Tony Wong  Leo Blitz 《Astrophysics and Space Science》2001,276(2-4):659-666

We present high-resolution (∼5″) BIMA CO observations of the ringed galaxy NGC 4736, along with previously published VLA HI data (Braun, 1995). Strong CO emission is detected from the star-forming ring at r=45″ and in the central region, where a molecular bar is apparent. The azimuthally averaged gas surface density is still much less than the Toomre critical density within r=60″, despite the starburst conditions in the ring (gas depletion time ≲1Gyr). Both CO and HI velocity fields show strong departures from a circular rotating disc model. The velocity residuals are consistent with inflowing gas near the ends of the central bar, outflowing gas between the bar and the ring, and inflowing gas outside the ring. We propose that the high star formation efficiency in the ring results from gas being driven out towards the OLR of the bar and in towards the ILR of the larger oval distortion. However, the strong signature of inflow outside the ring is probably due in part to gas motion in elliptical orbits. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

Using Points of Presence to Measure Accessibility to the Commercial Internet   总被引：1，自引：0，他引：1  

Tony H. Grubesic  Morton E. O'Kelly 《The Professional geographer》2002,54(2):259-278

As the Internet continues to grow, questions of accessibility and infrastructure equity persist. In the increasingly competitive telecommunications industry, profit-seeking firms continue to upgrade infrastructure in select market areas creating an uneven spatial distribution of access opportunities. This article utilizes a longitudinal database of Internet infrastructure development, highlighting fiber-optic backbone points of presence (POP) established by commercial Internet service providers to examine city accessibility to the commercial Internet. Results indicate that many larger metropolitan areas maintain dominant shares of telecom infrastructure, but several midsized metros are emerging as important centers for telecommunication interconnection.  相似文献   

Resources— something in reserve?     

Tony Loftas 《Marine Policy》1979,3(1):2

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A fundamental dispute: A discussion of “On some fundamentals of igneous petrology” by Bruce D. Marsh,Contributions to Mineralogy and Petrology (2013) 166: 665–690     

Rais Latypov  Tony Morse  Brian Robins  Richard Wilson  Grant Cawthorn  Christian Tegner  Marian Holness  Charles Lesher  Steve Barnes  Brian O’Driscoll  Ilya Veksler  Michael Higgins  Allan Wilson  Olivier Namur  Sofya Chistyakova  Richard Naslund  Peter Thy 《Contributions to Mineralogy and Petrology》2015,169(2):1-10

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Fisheries: Hope or despair?   总被引：1，自引：0，他引：1  

Tony J. Pitcher  William W.L. Cheung 《Marine pollution bulletin》2013

Recent work suggesting that fisheries depletions have turned the corner is misplaced because analysis was based largely on fisheries from better-managed developed-world fisheries. Some indicators of status show improvements in the minority of fisheries subjected to formal assessment. Other indicators, such as trophic level and catch time series, have been controversial. Nevertheless, several deeper analyses of the status of the majority of world fisheries confirm the previous dismal picture: serious depletions are the norm world-wide, management quality is poor, catch per effort is still declining. The performance of stock assessment itself may stand challenged by random environmental shifts and by the need to accommodate ecosystem-level effects. The global picture for further fisheries species extinctions, the degradation of ecosystem food webs and seafood security is indeed alarming. Moreover, marine ecosystems and their embedded fisheries are challenged in parallel by climate change, acidification, metabolic disruptors and other pollutants. Attempts to remedy the situation need to be urgent, focused, innovative and global.  相似文献