298 research outputs found
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Report and resolve in favor of Daniel J. Perley & als.
No full textCommittee on State Lands report and resolution regarding Daniel J. Perley and others' petition regarding a purchase of land. Following the conclusion that the purchasers were misled as to the quantity and quality of the timber, the committee resolved that the Land Agent give back their notes from the purchase, as well as other adjustments
Adversarial Authorship Attribution in Open-Source Projects
No full textOpen-source software is open to anyone by design, whether it is a community of developers, hackers or malicious users. Authors of open-source software typically hide their identity through nicknames and avatars. However, they have no protection against authorship attribution techniques that are able to create software author profiles just by analyzing software characteristics. In this paper we present an author imitation attack that allows to deceive current authorship attribution systems and mimic a coding style of a target developer. Withing this context we explore the potential of the existing attribution techniques to be deceived. Our results show that we are able to imitate the coding style of the developers based on the data collected from the popular source code repository, GitHub. To subvert author imitation attack, we propose a novel author obfuscation approach that allows us to hide the coding style of the author. Unlike existing obfuscation tools, this new obfuscation technique uses transformations that preserve code readability. We assess the effectiveness of our attacks on several datasets produced by actual developers from GitHub, and participants of the GoogleCodeJam competition. Throughout our experiments we show that the author hiding can be achieved by making sensible transformations which significantly reduce the likelihood of identifying the author’s style to 0% by current authorship attribution systems
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Report of the Committee on State Lands.
No full textJanuary 18, 1839 Report of the Committee on State Lands regarding the petition of Daniel J. Perley and others. After considering the evidence, the committee proposed a resolve in Perley's and other's favor for the Land Agent to return their notes as the timber land was not as represented
The impact of a young radio galaxy: clues from the cosmic ray electron population
No full textIn the framework of hierarchical structure formation, active galactic nuclei (AGN) feedback shapes the galaxy luminosity function. Low luminosity, galaxy-scale double radio sources are ideal targets to investigate the interplay between AGN feedback and star formation. We use Very Large Array and BIMA millimetre-wave array observations to study the radio continuum emission of NGC 3801 between 1.4 and 112.4 GHz. We find a prominent spectral break at ~10 GHz, where the spectrum steepens as expected from cosmic ray electron (CRe) ageing. Using the equipartition magnetic field and fitting JP models locally, we create a spatially resolved map of the spectral age of the CRe population. The spectral age of τint = 2.0 ± 0.2 Myr agrees within a factor of 2 with the dynamical age of the expanding X-ray emitting shells. The spectral age varies only little across the lobes, requiring an effective mixing process of the CRe such as a convective backflow of magnetized plasma. The jet termination points have a slightly younger CRe spectral age, hinting at in situ CRe re-acceleration. Our findings support the scenario where the supersonically expanding radio lobes heat the interstellar medium (ISM) of NGC 3801 via shock waves, and, as their energy is comparable to the energy of the ISM, are clearly able to influence the galaxy's further evolution
Immigration Detention and Release Decisions in Canada: Development and Preliminary Validation of a Risk Assessment Tool for Frontline Officers
No full textImmigration detention systems face mounting pressure to demonstrate transparent and defensible decision-making practices amid growing ethical concerns. The Canada Border Services Agency (CBSA) has drawn particular scrutiny in this area, largely due to its partnerships with correctional agencies. Critics challenge CBSA's framework for placing noncitizens in these facilities, characterizing its risk assessment processes as opaque and arbitrary. To address these limitations, we developed the Immigration Risk Assessment for Detention (IRAD), an empirically informed tool designed to meet CBSA's multiple decision-making needs—from release on community-based alternatives to detention (ATDs) to security classification level within detention facilities. This dissertation presents research conducted across three co-authored articles, each representing a distinct phase in the IRAD’s development and preliminary validation. First, we surveyed 92 CBSA employees to gather their insights on immigration detention risk assessment. Second, we developed a 30-item numerical IRAD prototype by integrating our survey results with CBSA’s operational guidance and correctional risk assessment research. We then conducted a longitudinal retrospective validation of the IRAD prototype using 301 case files, which provided preliminary support for its use. The IRAD's Danger to Public and Unlikely to Appear domains showed good to excellent interrater reliability, and the latter domain predicted ATD violations with moderate accuracy. Concordance analyses revealed misalignments between client risk and CBSA's purportedly risk-based decisions. The IRAD and CBSA's current security classification tool also showed similar concordance with security classification decisions. Finally, we adapted the IRAD prototype for operational use, creating a 21-item structured professional judgement tool. We then explored the potential operational utility of this tool in a mixed prospective-retrospective pilot with CBSA employees. Though low officer engagement prevented robust evaluation, we found further evidence of misalignment between risk and decisions. A noise audit with client vignettes also revealed inconsistencies among officers during the risk identification, risk analysis, and decision-making processes for ATD determinations. As the IRAD consolidates CBSA's operational resources, our research suggests that decisions are influenced by other factors, which may be extraneous given the inconsistencies identified in our noise audit. The IRAD's streamlined, empirically informed design and preliminary evidential support may therefore help CBSA better align its decisions with risk
A Millimeter Rebrightening in GRB 210702A
No full textWe present X-ray to radio frequency observations of the bright long gamma-ray burst GRB 210702A. Our Atacama Large Millimeter/submillimeter Array 97.5 GHz observations show a significant rebrightening by a factor of ≈2 beginning at 8.2 days post-burst and rising to peak brightness at 18.1 days before declining again. This is the first such rebrightening seen in a millimeter afterglow light curve. A standard forward shock model in a stellar wind circumburst medium can explain most of our X-ray, optical, and millimeter observations prior to the rebrightening, but significantly overpredicts the self-absorbed radio emission, and cannot explain the millimeter rebrightening. We investigate possible explanations for the millimeter rebrightening, and find that energy injection or a reverse shock from a late-time shell collision are plausible causes. Similar to other bursts, our radio data may require alternative scenarios such as a thermal electron population or a structured jet to explain the data. Our observations demonstrate that millimeter light curves can exhibit some of the rich features more commonly seen in optical and X-ray afterglow light curves, motivating further millimeter wavelength studies of GRB afterglows
ZTF BTS Alert Filter Code
No full textBasic release of ZTF BTS filter code. Contains the primary 2018, 2019, and 2020 versions of the filter as used on the GROWTH Marshal. Current as of the submission of BTS Paper II
Marine Patrol Officers
No full textFront - Kneeling: Roger Allen, Wayne Smith Front Row: Daniel Morris, Jeffrey Gallagher, Carl Burdin, Kevin Conger, D. William Smith, Richard LaHaye,Jr., Paul Gardner, John Bennett, Paul Kvorjak Jr., Paul Mitchell, Richard Minzy Second Row: George Openshaw, Michael Pinkham, Stuart Morin, John Williams, Orville Nisbet, Joseph Fessenden, Kurt Soneson, James Carroll, John Carroll, Robert Fogg. Third Row: James Peva, John Mitchell, Alpheus Dorr, Jonathan Wright, Perley sprague, Charles Rommel, Charles Hutchings, ronald dolliver, Robert Burns. Fourth Row: David Maudlin, John Litwinowich, Michael Moultis, William Pinkham, Leigh MacKeen, John Fetterman, Alan Lear, Vaughan Crandall Jr, James shaw, James Salisbury.https://digitalmaine.com/dmr_images/1129/thumbnail.jp
Burst of the Century? A Case Study of the Afterglow of Nearby Ultra-Bright GRB 130427A
No full textGRB 130427A is the brightest gamma-ray burst observed by any satellite in almost
30 years and one of the most thoroughly observed. I will present a summary of the
worldwide campaign to monitor the afterglow of this event from GHz to TeV energies
and from seconds to years after the explosion. Remarkably, the entire data set can be
described to good agreement using standard synchrotron afterglow theory, providing
strong support for the validity the basic model in describing the evolution of this event
and for GRB afterglows generally. Distinct forward and reverse shock components are
resolved in both the SED and multifrequency light curves; the late-time high-energy
emission seen by LAT is produced by the forward shock. We also infer a tenuous,
wind-stratified medium surrounding this burst, suggesting a massive, low-metallicity
progenitor. While GRB 130427A was an incredibly rare and fortuitous event its
properties are probably not intrinsically unusual, and it provides lessons for what
might be routinely achieved in the future with faster and deeper multiwavelength
follow-up of gamma-ray bursts
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