نتایج جستجو برای: crash hotspots

تعداد نتایج: 17775  

2012
Dawei Wang Wei Ding Tomasz F. Stepinski Josue Salazar Henry Z. Lo Melissa Morabito

Criminal activities are unevenly distributed over space. The concept of hotspots is widely used to analyze the spatial characters of crimes. But existing methods usually identify hotspots based on an arbitrary user-defined threshold with respect to the number of a target crime without considering underlying controlling factors. In this study we introduce a new data mining model – Hotspots Optim...

Journal: :Systematic biology 2013
Mark de Bruyn Lukas Rüber Stephan Nylinder Björn Stelbrink Nathan R Lovejoy Sébastien Lavoué Heok Hui Tan Estu Nugroho Daisy Wowor Peter K L Ng M N Siti Azizah Thomas Von Rintelen Robert Hall Gary R Carvalho

Understanding factors driving diversity across biodiversity hotspots is critical for formulating conservation priorities in the face of ongoing and escalating environmental deterioration. While biodiversity hotspots encompass a small fraction of Earth's land surface, more than half the world's plants and two-thirds of terrestrial vertebrate species are endemic to these hotspots. Tropical Southe...

Journal: :Accident; analysis and prevention 2004
Xiao Qin John N Ivan Nalini Ravishanker

A critical part of any risk assessment is identifying how to represent exposure to the risk involved. Recent research shows that the relationship between crash count and traffic volume is non-linear; consequently, a simple crash rate computed as the ratio of crash count to volume is not proper for comparing the safety of sites with different traffic volumes. To solve this problem, we describe a...

2002
David L. Smith Wassim G. Najm Richard A. Glassco

A crash avoidance database structure that is based on driver judgments is proposed. The structure comprises four driving conflict states (low risk, conflict, near crash, and crash) that correspond with advisory warning, crash-imminent warning, and crash mitigation countermeasures. The feasibility of this database structure is investigated by answering two questions: (a) Can the driving states b...

2013
Joseph R. Zipkin Martin B. Short Andrea L. Bertozzi

Hotspots of crime localized in space and time are well documented. Previous mathematical models of urban crime have exhibited these hotspots but considered a static or otherwise suboptimal police response to them. We introduce a program of police response to hotspots of crime in which the police adapt dynamically to changing crime patterns. In particular, they choose their deployment to solve a...

2003
Vincent Courtillot Anne Davaille Jean Besse Joann Stock

The origin of mantle hotspots is a controversial topic. Only seven (‘primary’) out of 49 hotspots meet criteria aimed at detecting a very deep origin (three in the Pacific, four in the Indo-Atlantic hemisphere). In each hemisphere these move slowly, whereas there has been up to 50 mm/a motion between the two hemispheres prior to 50 Ma ago. This correlates with latitudinal shifts in the Hawaiian...

2016
Joshua Charles Campbell Eddie Antonio Santos Abram Hindle

6 Organizations like Mozilla, Microsoft, and Apple are flooded with thousands of automated crash reports per day. Although crash reports contain valuable information for debugging, there are often too many for developers to examine individually. Therefore, in industry, crash reports are often automatically grouped together in buckets. Ubuntu’s repository contains crashes from hundreds of softwa...

Journal: :Plasma Physics and Controlled Fusion 2021

Abstract A runaway electron (RE) fluid model is used to perform non-linear magnetohydrodynamic simulations of a relativistic beam termination event in JET. The case considered that post-disruption low density cold plasma the plateau phase, wherein high-Z impurities have been largely flushed out via deuterium second injection (Shot:95135). Details experiment are found separate publications. Our ...

2005
Vivek Goyal Eric W. Biederman Hariprasad Nellitheertha

Kdump is a kexec based kernel crash dumping mechanism, which is being perceived as a reliable crash dumping solution for Linux R ©. This paper begins with brief description of what kexec is and what it can do in general case, and then details how kexec has been modified to boot a new kernel even in a system crash event. Kexec enables booting into a new kernel while preserving the memory content...

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