130,371 research outputs found
Effect of Mach number on the structure of turbulent spots
No full textDirect numerical simulations have been performed to study the dynamics of isolated turbulent spots in compressible isothermal-wall boundary layers. Results of a bypass transition scenario at Mach 2, 4 and 6 are presented. At all Mach numbers the evolved spots have a leading-edge overhang, followed by a turbulent core and a calmed region at the rear interface. The spots have an upstream-pointing arrowhead shape when visualized by near-wall slices, but a downstream-pointing arrowhead in slices away front the wall. The lateral spreading of the spot decreases substantially with the Mach number, consistent with a growth mechanism based on the instability of lateral shear layers. Evidence for a supersonic (Mach) mode substructure is found in the Mach 6 case, where coherent spanwise structures are observed under the spot overhang region
August 2014 podcast - cancer risk, anal sex, and mapping NTDs
No full textKrishnan Bhaskaran on how obesity affects cancer risk. Cicely Marston on teenage attitudes towards anal sex. Kebede Deribe on the importance of mapping NTDs in Ethiopia
The Insights and Illusions of Consumption Measurements
No full textAlthough household well-being is anchored in long-term average rates of consumption, welfare comparisons typically rely on shorter-duration survey measurements. This paper develops a new strategy to identify the distribution of these long-term rates by leveraging a large-scale randomization that elicited repeated short-duration measurements from diaries and recall questions. Identification stems from diary-recall differences in reports from the same household, does not require these reports to be error-free, and hinges on a research design with broad replicability. This strategy delivers cost-effective suggestions for designing survey modules to yield the most accurate measurements of consumption well-being, and offers new insights for interpreting and reconciling diary-recall differences in household expenditure surveys
The Insights and Illusions of Consumption Measurements
No full textWhile household well-being derives from long-term average rates of consumption, welfare estimates rely on shorter-duration survey measurements. We develop a strategy to identify the distribution of these long-term rates by leveraging a large-scale randomization that elicited repeated short-duration measurements from diaries and recall questions. Identification stems from diary–recall differences in reports from the same household, does not require reports to be error-free, and hinges on a research design with broad replicability. Our strategy delivers practical and cost-effective suggestions for designing survey modules to yield the closest measurements of household well-being. We find little empirical support for the claim that acquisition diaries yield the most accurate measurement of poverty and inequality and offer new insights to interpret and reconcile diary–recall differences in household surveys
Cyclophosphazene supramolecular assemblies: N-H⋯N and C-H⋯N mediated supramolecular networks in the crystal structures of N 3P3[N(Me)NH2]6 and spiro-N 3P3 [O2C12H8][N(Me) NH2]4
No full textCyclophosphazene hydrazides, N3P3[N(Me) NH2](6) 1 and spiro-N3P3[O2C12H8][N(Me)NH2](4) 2 have been found to organize themselves in supramolecular assemblies in the solid state. Thus, 1 forms a hexagonal close-packed sheet in which each molecule interacts with its six nearest neighbors. All the three ring nitrogen atoms act as proton acceptors while one N(Me) NH2 substituent on each phosphorus atom acts as a proton donor. Compound 2 forms a double chain in which two ring nitrogen atoms act as proton acceptors and one N( Me) NH2 substituent of each phosphorus atom acts as a proton donor. The supramolecular assembly of 1 is further elaborated by intermolecular C-H...N interactions
A Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
Interaction in professional discourse in job interviews / Isai Amutan Krishnan
No full textThe study focuses on an investigation into interaction in professional discourse in job interviews: Interpersonal Meanings in terms of Mood and Modality (Halliday, 1994), Impression Management (Steven & Kristof, 1995) and Communication Skills (Truman, 2011). A qualitative research design (Creswell, 2008 &Jackson, 2011)was used to elicit data involving content analysis of interview transcripts for the use of Mood and Modality features. Additionally, the interviewer‟s impression of the candidates in four aspects, namely, self-focus, self-presentation, exemplification and entitlements as well as communication skills namely completeness, conciseness, clarity and correctness were also analysed. Data were obtained from ten interviews. The findings showed that the Mood and Modality resources predominantly used by the interview candidates were the low modal finite „can‟ (n=24;29%) and the median modal finite „will‟ (n=28;34%). Less significantly used were the low modal finites which are „may‟ (n=2;2.4%), „could‟ (n=2;2.4%) and „might‟ (n=3;3.6 %,) and the median modal finite which is „should‟ (n=4; 4.8%) and the high modal finite which is „must‟ (n=2;2.4%). Other median modal finites which are „is to‟ and „was to‟ and other high modal finites which are ‟ought to‟, „need to‟, „has to‟ and „had to‟ were not used at all by the interviewees.
Most of the interview candidates were not able to use the Mood and Modality resources successfully in the job interview as the candidates typically use the low modal finite „can‟ and the median modal finite „will‟ in everyday conversations. Therefore, they naturally used „can‟ and „will‟ in the job interviews although their use was at times not appropriate. This leads to candidates being unable to carry out a professional conversation in job interviews. Where Impression Management aspects are concerned, the interview candidates did very well in the „exemplification‟ (n=10;52.6 %) category. They did reasonably well in the, „entitlement‟ (n=10;50%) and „self-presentation‟ (n=11;40.7%) categories, which fall under the good category compared to „self-focused‟ (n=14;50%) which falls under the average category. Most of the interview candidates scored under the good not the excellent category. Only three candidates were rated excellent for Impression Management however they did not display the entitlement aspect at all. It may be concluded that none of the four Impression Management aspects were fully displayed by the interview candidates. The candidates were not able to impress the interviewers as they were not competent to answer the questions. Communication skills aspects are also concerned in the job interviews. The interview candidates were able to express reasonably well in the „completeness‟ (n=16;53.3%) aspectwhich falls under the excellent category and „correctness‟ (n=8;38%) element which falls under the good category.The candidates were not able to express „conciseness‟ (n=8;40%) and „clarity‟ (n=8;28.5%), which fall under the good categories. The candidates lacked Communication Skills in terms of clarity and conciseness. These two aspects are usually neglected but are important expects to carry out a good conversation in job interviews. The findings of the current study have shown that Malaysian graduates seeking employment need to develop on many fronts, namely, in convincing the interviewer with the required qualities and creating a positive impression in job interviews. Apart from that, the ability to articulate thoughts and listen to the questions and answer in an appropriate manner would create a positive image of job seekers
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No full textNot AvailableQureshi, N.W., Krishnan, M., Wani, S.A., Ramasubramanian, V., Sivaramane, N. and Sundaramoorthy, C. (2017) Negative Externalities in Kashmir Lake Fisheries: Transformation in Species Patronage, Use Priorities and Policy, Indian Journal of Agricultural Economics, 72(1), 89-101Not Availabl
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