54 research outputs found
Custom Architecture for Immersive-Audio Applications
No full textIn this dissertation, we propose a new approach for rapid development of multi-core immersive-audio systems. We study two popular immersive-audio techniques, namely the Beamforming and the Wave Field Synthesis (WFS). Beamforming utilizes microphone arrays to extract acoustic sources recorded in a noisy environment. WFS employs large loudspeaker arrays to render moving audio sources, thus providing outstanding audio perception and localization. Research on literature reveals that the majority of such experimental and commercial audio systems are based on standard PCs, due to their high-level programming support and potential of rapid system development. However, these approaches introduce performance bottlenecks, excessive power consumption and increased overall cost. Systems based on DSPs consume very low power, but performance is still limited. Custom-hardware solutions alleviate the aforementioned drawbacks, but designers primarily focus on performance optimization without providing a high-level interface for system control and test. To address the aforementioned problems, we propose a custom platform-independent architecture that supports immersive-audio technologies for high-quality sound acquisition and rendering. An important feature of the architecture is that it is based on a multi-core processing paradigm. This allows the design of scalable and reconfigurable micro-architectures, with respect to the available hardware resources, and customizable implementations targeting multi-core platforms. To evaluate our proposal we conducted two case studies: We implemented our architecture as a heterogeneous multi-core reconfigurable processor mapped onto FPGAs. Furthermore, we applied our architecture to a wide range of contemporary GPUs. Our approach combines the software flexibility of GPPs with the computational power of multi-core platforms. Results suggest that employing GPUs and FPGAs for building immersive-audio systems, leads to solutions that can achieve up to an order of magnitude improved performance and reduced power consumption, while also decrease the overall system cost, when compared to GPP-based approaches.Microelectronics & Computer EngineeringElectrical Engineering, Mathematics and Computer Scienc
Influence du système endocrinien de la vitamine D dans la régulation de la vitamine D3 25-hydroxylase CYP27A hépatique et intestinale chez l'humain et le rat
No full textThèse numérisée par la Division de la gestion de documents et des archives de l'Université de Montréal
Fine-Grained Sentiment Analysis of Multi-domain Online Reviews
No full textWe propose a fine-grained Sentiment Analysis application focusing in multiple domains and text types. The present approach concerns sentiment analysis implemented at a fine-grained level, beyond the typical polarity of “positive”, “negative” and “neutral” as evaluations of user input, introducing intermediate sentiments community. Fine-grained sentiment analysis is applied on movie reviews, Tripadvisor reviews and Coursera reviews. The implemented application is accessed by a web graphical user interface. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG
Interethnic marriage decisions: a choice between ethnic and educational similarities
No full textThis paper examines the effect of education on intermarriage and specifically,
whether the mechanisms through which education affects intermarriage differ by
immigrant generation and race. We consider three main paths through which
education affects marriage choice. First, educated people may be better able to
adapt to different customs and cultures making them more likely to marry outside of
their ethnicity. Second, because the educated are less likely to reside in ethnic
enclaves, meeting potential spouses of the same ethnicity may involve higher search
costs. Lastly, if spouse-searchers value similarities in education as well as ethnicity,
then they may be willing to substitute similarities in education for ethnicity when
evaluating spouses. Thus, the effect of education will depend on the availability of
same-ethnicity potential spouses with a similar level of education. Using U.S. Census
data, we find evidence for all three effects for the population in general. However,
assortative matching on education seems to be relatively more important for the
native born, for the foreign born that arrived at a fairly young age, and for Asians.
We conclude by providing additional pieces of evidence suggestive of our
hypotheses
The departure of the Greeks from Egypt, 1961: The perspective of Greek diplomacy
No full textThe departure of the greater part of the Greek community from Egypt is one of the many sad stories of the post-war Mediterranean. This article focuses upon the reports of the Greek Consul-General in Alexandria, Byron Theodoropoulos, regarding the Egyptian ‘Socialist Laws’ of summer 1961, which gave the coup de grâce to the Greek community. It argues that the expulsion of the Greeks was part of a wider redistribution of power in the region. This episode, together with similar experiences in other parts of the Mediterranean, evidently cemented the determination of a younger generation of political leaders and diplomats to seek Greece’s future in the cosmopolitan, post-nationalist West, rather than in a ‘Near East’ rife with nationalism and economic failure. © The Author(s), 2020. Published by Cambridge University Press on behalf of Byzantine and Modern Greek Studies
I'll Marry You If You Get Me a Job: Marital Assimilation and Immigrant Employment Rates
No full textMarriage to a native has a theoretically ambiguous impact on immigrant employment rates. Utilizing 2000 U.S. Census data, this paper empirically tests whether and how marriage choice affects the probability that an immigrant is employed. Results from an ordinary least squares model controlling for the usual measures of human capital and immigrant assimilation suggest that marriage to a native increases an immigrant's employment probability by approximately four percentage points. The estimated impact of marriage to a native increases to 11 percentage points in models which take into account the endogeneity of the intermarriage decision.immigration, employment, intermarriage
Interethnic Marriage Decisions: A Choice between Ethnic and Educational Similarities
No full textThis paper examines the effect of education on intermarriage and specifically, whether the mechanisms through which education affects intermarriage differ by immigrant generation and race. We consider three main paths through which education affects marriage choice. First, educated people may be better able to adapt to different customs and cultures making them more likely to marry outside of their ethnicity. Second, because the educated are less likely to reside in ethnic enclaves, meeting potential spouses of the same ethnicity may involve higher search costs. Lastly, if spouse-searchers value similarities in education as well as ethnicity, then they may be willing to substitute similarities in education for ethnicity when evaluating spouses. Thus, the effect of education will depend on the availability of same-ethnicity potential spouses with a similar level of education. Using U.S. Census data, we find evidence for all three effects for the population in general. However, assortative matching on education seems to be relatively more important for the native born, for the foreign born that arrived at a fairly young age, and for Asians. We conclude by providing additional pieces of evidence suggestive of our hypotheses.Ethnic intermarriage, Education, Immigration
Experimental and theoretical study of CW hydrogen fluoride chemical laser residual fundamental gain
No full textA new technique that uses a multi-line probe beam to measure the gain on several lines simultaneously was developed. This new technique was used to measure the gains of the peak fundamental lines P\sb1 (4-9) and P\sb2(4-9) while lasing on the overtone, for three levels of media saturation. The suppression of the fundamental gains obtained at relatively high media saturation with 99.7/99.7% reflective mirrors was essentially the same as that obtained with 55% higher intracavity flux with 99.8/99.86% reflective mirrors. The gains of the low J lines P\sb1(4-6) and P\sb2(4-6) were suppressed 41% to 84%; the gains of the high J lines P\sb1(7-9) and P\sb2(7-9) were suppressed 3% to 43%. The 1 0 lines were suppressed more than the 2 1 lines. The maximum suppression occurred between 2 and 6 mm downstream from the nozzle exit plane, near the center of the 9 mm overtone beam.Simulation of the experiments with a rotational nonequilibrium computer model showed that the fundamental gains are determined by three independent mechanisms when lasing occurs on the overtone. First, overtone lasing decreases the gains of the P\sb1(J) and P\sb2(J) lines whose upper or lower levels are directly involved in P\sb{20}(J) overtone lasing. Second, overtone lasing reduces the rate at which the low J v = 2 states are populated by rotational relaxation and increases the rate at which the low J v = 0 states are populated by rotational relaxation, resulting in suppression of the low J fundamental gains whose upper or lower levels are not directly involved in overtone lasing. Third, overtone lasing reduces the rate at which the HF(0,J) and HF(1,J) states are populated by the various collisional deactivation processes.With 10% of the original rotational relaxation rate, the computer model was in reasonable agreement with the measured zero power gain profiles. The model over predicted the fundamental gain suppression () for the P\sb1(8,9) and P\sb2(8,9) lines whose upper or lower levels were directly involved in overtone lasing, and under predicted the suppression for lines P\sb1(4) and P\sb2(4,5). The model predicted the suppression for lines P\sb1(5-7) and P\sb2(6,7) reasonably well. With the original rotational relaxation rate, the model was in reasonable agreement with the measured suppression of all P\sb1(4-9) and P\sb2(4-9) lines. However, with the original RR rate, the model's agreement with the experimental zero power gain profiles was not adequate.Made available in DSpace on 2011-05-07T12:49:48Z (GMT). No. of bitstreams: 2
license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5)
9236606.pdf: 14512934 bytes, checksum: aeb71679a76b64d4cfd6364e80e18091 (MD5)
Previous issue date: 1992Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding ([email protected]) on 2011-05-07T14:46:23Z
Item is restricted indefinitely.Restriction data tranferred 2014-07-01T11:20:47-05:00
Original Data
Group with Access UIUC Users [automated]
Release Date: none
Reason: ETDs are only available to UIUC Users without author permissionETDs are only available to UIUC Users without author permissionU of I Onl
Precarious masculinities: migrant working men’s masculinities as self-exploitation in a Mediterranean restaurant in Glasgow
No full textDrawing on a covert participant observation process where Author A was employed as a kitchen porter in a Mediterranean restaurant in Glasgow, this article analyses how practices characteristic of hegemonic masculinity are incorporated by male migrant workers as a form of recuperating power under conditions of exploitation. Building on Connell’s (2020) framework of hegemonic masculinity, the researchers found that performances of masculinity operated in a way that, while allowing subjects to feel some degree of power, also ultimately reinforced the individualising pressures promoted by the labour process and thereby undermined any potential to nurture the bonds of solidarity required to radically challenge exploitative working conditions
- …
