1,530 research outputs found

    Parameters of variation between verb-subject and subject-verb order in late Middle English

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    This article sets out to clarify the contribution of syntactic properties and subject weight for variation between verb-subject and subject-verb order in a database of fourteenth and fifteenth-century prose. It sets out the syntactic structures which are assumed, and investigates the impact on ordering of a set of factors, using established quantitative methodologies. A series of conclusions includes the continuing distinct status of initial then, the systematic importance of clause-final position, the different impacts of subject length in different contexts, and the presence of a definiteness effect for the late placement of a subject after a nonfinite unaccusative

    Why DO dove: Evidence for register variation in Early Modern English negatives

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    The development of “supportive” (or “periphrastic”) DO in English suffered a curious and sharp reversal late in the 16th century in negative declaratives and questions according to Ellegård's (1953) database, with a recovery late in the following century. This article examines the variation between DO and the full verb in negative declaratives in this database, from 1500 to 1710. It is shown that both register variation and age-grading are relevant, and that the periods 1500–1575 and 1600–1710 have radically distinct properties. The second period shows substantial age-grading, and is interpreted as having introduced a fresh evaluative principle governing register variation. Negative questions supply data that suggest that the development of clitic negation may have been implicated in the development of the new evaluation. This change in evaluation accounts for the apparent reversal in the development of DO, and we can abandon the view that it was a consequence of grammatical restructuring

    The Sociolinguistics of DO NOT in the 16th and 17th Century

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    Clustering Spam Domains and Destination Websites: Digital Forensics with Data Mining

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    Spam related cyber crimes have become a serious threat to society. Current spam research mainly aims to detect spam more effectively. We believe the identification and disruption of the supporting infrastructure used by spammers is a more effective way of stopping spam than filtering. The termination of spam hosts will greatly reduce the profit a spammer can generate and thwart his ability to send more spam. This research proposes an algorithm for clustering spam domains extracted from spam emails based on the hosting IP addresses and tracing the IP addresses over a period of time. The results show that many seemingly unrelated spam campaigns are actually related if the domain names in the URLs are investigated; spammers have a sophisticated mechanism for combating URL blacklisting by registering many new domain names every day and flushing out old domains; the domains are hosted at different IP addresses across several networks, mostly in China where legislation is not as tight as in the United States; old IP addresses are replaced by new ones from time to time, but still show strong correlation among them. This paper demonstrates an effective use of data mining to relate spam emails for the purpose of identifying the supporting infrastructure used for spamming and other cyber criminal activities

    Thin film 2H .alpha.-SiC

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    Thin films of 2H .alpha.-silicon carbide are produced by pulsed laser ablation

    Spectroscopy of Early F Stars: Îł Doradus Candidates and Possible Metallic Shell Stars

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    We obtained high-resolution spectroscopic observations of 34 γ Doradus candidates. From the red-wavelength spectra, we determined spectral classes, radial velocities, and projected rotational velocities. The spectra of seven late A or early F stars show metallic lines that have composite profiles consisting of a narrow component near the center of a broad line, indicating that they may be shell stars or binaries. Several stars, including HD 152896, HD 173977, HD 175337, and HD 195068/9, show large line profile asymmetries. Two stars, HD 11443 (=α Trianguli) and HD 149420, are ellipsoidal variables and not γ Doradus stars. The percentage of binary systems in our sample may be as high as 74%

    Reeling in Big Phish with a Deep MD5 Net

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    Phishing continues to grow as phishers discover new exploits and attack vectors for hosting malicious content; the traditional response using takedowns and blacklists does not appear to impede phishers significantly. A handful of law enforcement projects — for example the FBI\u27s Digital PhishNet and the Internet Crime and Complaint Center (ic3.gov) — have demonstrated that they can collect phishing data in substantial volumes, but these collections have not yet resulted in a significant decline in criminal phishing activity. In this paper, a new system is demonstrated for prioritizing investigative resources to help reduce the time and effort expended examining this particular form of online criminal activity. This research presents a means to correlate phishing websites by showing that certain websites are created by the same phishing kit. Such kits contain the content files needed to create the counterfeit website and often contain additional clues to the identity of the creators. A clustering algorithm is presented that uses collected phishing kits to establish clusters of related phishing websites. The ability to correlate websites provides law enforcement or other potential stakeholders with a means for prioritizing the allocation of limited investigative resources by identifying frequently repeating phishing offenders

    Microstrata

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    Microstrata are the non-extremal analogues of superstrata: they are smooth, non-extremal (non-BPS) solitonic solutions to IIB supergravity whose deep-throat limits approximate black holes. Using perturbation theory and numerical methods, we construct families of solutions using a consistent truncation to three-dimensional supergravity. The most general families presented here involve two continuous parameters, or amplitudes, and four quantized parameters that set the angular momenta and energy levels. Our solutions are asymptotic to the vacuum of the D1-D5 system: AdS3Ă—S3Ă—T4_3 \times S^3 \times T^4. Using holography, we show that the they are dual to multi-particle states in the D1-D5 CFT involving a large number of mutually non-BPS supergravitons and we determine the anomalous dimensions of these states from the binding energies in supergravity. These binding energies are uniformly negative and depend non-linearly on the amplitudes of the states. In one family of solutions, smoothness restricts some of the fields to lie on a special locus of the parameter space. Using precision holography we show that this special locus can be identified with the multi-particle states constructed via the standard OPE of the single-particle constituents. Our numerical analysis shows that microstrata are robust at large amplitudes and the solutions can be obtained to very high precision.Comment: 84 pages, 14 figures, Mathematica file to be attached in v

    Environmental attributes influencing the distribution of Burkholderia pseudomallei in Northern Australia

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    Factors responsible for the spatial and temporal clustering of Burkholderia pseudomallei in the environment remain to be elucidated. Whilst laboratory based experiments have been performed to analyse survival of the organism in various soil types, such approaches are strongly influenced by alterations to the soil micro ecology during soil sanitisation and translocation. During the monsoonal season in Townsville, Australia, B. pseudomallei is discharged from Castle Hill (an area with a very high soil prevalence of the organism) by groundwater seeps and is washed through a nearby area where intensive sampling in the dry season has been unable to detect the organism. We undertook environmental sampling and soil and plant characterisation in both areas to ascertain physiochemical and macro-floral differences between the two sites that may affect the prevalence of B. pseudomallei. In contrast to previous studies, the presence of B. pseudomallei was correlated with a low gravimetric water content and low nutrient availability (nitrogen and sulphur) and higher exchangeable potassium in soils favouring recovery. Relatively low levels of copper, iron and zinc favoured survival. The prevalence of the organism was found to be highest under the grasses Aristida sp. and Heteropogon contortus and to a lesser extent under Melinis repens. The findings of this study indicate that a greater variety of factors influence the endemicity of melioidosis than has previously been reported, and suggest that biogeographical boundaries to the organisms' distribution involve complex interactions

    “We are fingers of a hand that make a fist": Working class alliances in Colorado River water protests in the Mexicali Valley, Mexico

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    This article explores recent water protests across northern Mexico which emanated from the Mexicali Valley in Baja California, Mexico. Beginning in 2015, communal farmers and industrial labourers, among other groups, aligned under the banner of Defense of Water to protest the construction of a United States-based beverage production facility. Through interviews, participant observation and archival research, we study this social movement through a class-based, historical lens to show how the meaning of water presupposes and represents a century of class politics that has allowed seemingly disparate groups to find meaning and build alliances within it. It is this history that has allowed protesters to achieve shared goals
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