Buffet tests on 1/20 scale lca model with leading edge slats at transonic speeds

Buffet measurements have been made on the 1120 scale LCA model (stage 6.45 V 35) with full leading edge slat at transonic speeds in the 1.2m tunnel. Unsteady signals from wing-root strain gauges have been measured and the response at the first wing bending frequency has been utilized for the determination of buffet characteristics. Mabey's technique has been employed to estimate buffeting coefficients at different Mach numbers. Significant reductions in the maximum buffet levels have been found in the presence of leading edge slats, confirming the results obtained from Calspan tests

Mary is the Model of Christian Discipleship

When Jesus saw his mother and the disciple there whom he loved, he said to his mother, “Woman, behold, your son.” Then he said to the disciple, “Behold, your mother” (Jn 19:26-27). At the foot of the cross, Mary, the mother of Jesus is given as mother to every single human being. Mary is the mother of all mankind. The New Testament traces Mary as a woman of limitless faith, obedience and humility who followed Jesus in a perfect way. Her heart was always centered on Jesus. She is the humble handmaid of God who surrendered herself completely into the hands of God. Without thinking of her fate, Mary said ‘yes’ to God. Thus, she became an example for those who wish to bear witness to Christ. By the four Marian dogmas (The Mother of God, The Perpetual Virginity of Mary, The Immaculate Conception of Mary, and The Assumption of Mary), Catholic Church teaches its faithful about Mary’s role in the salvation history. These dogmas help us to look more closely at Mary’s life. They teach us the reason why we can look at Mary as a model for Christian life. Like any other Christian, Mary is the example for consecrated people also. Mary is the first person who was consecrated unconditionally to God. As a sign of their consecration to God, Religious profess vows of obedience, chastity and poverty. Mary is the perfect example for Religious to live in the spirit of these three vows. She is our model and she will remain as an unique model for all those who desires to become disciples of Jesus

A perceptual comparison of empirical and predictive region-of-interest video

When viewing multimedia presentations, a user only attends to a relatively small part of the video display at any one point in time. By shifting allocation of bandwidth from peripheral areas to those locations where a user’s gaze is more likely to rest, attentive displays can be produced. Attentive displays aim to reduce resource requirements while minimizing negative user perception—understood in this paper as not only a user’s ability to assimilate and understand information but also his/her subjective satisfaction with the video content. This paper introduces and discusses a perceptual comparison between two region-of-interest display (RoID) adaptation techniques. A RoID is an attentive display where bandwidth has been preallocated around measured or highly probable areas of user gaze. In this paper, video content was manipulated using two sources of data: empirical measured data (captured using eye-tracking technology) and predictive data (calculated from the physical characteristics of the video data). Results show that display adaptation causes significant variation in users’ understanding of specific multimedia content. Interestingly, RoID adaptation and the type of video being presented both affect user perception of video quality. Moreover, the use of frame rates less than 15 frames per second, for any video adaptation technique, caused a significant reduction in user perceived quality, suggesting that although users are aware of video quality reduction, it does impact level of information assimilation and understanding. Results also highlight that user level of enjoyment is significantly affected by the type of video yet is not as affected by the quality or type of video adaptation—an interesting implication in the field of entertainment

Black body cavity radiometer Patent

Black body radiometer having isothermally surrounded cavity for ultraviolet, visible, and infrared radiatio

Manufacturing contamination prevention handbook

Manufacturing management discipline handbook concerning contamination prevention may present principles and guidelines which can be adopted for industrial and commercial manufacturer usage. Contamination prevention program is categorized into three basic aspects: initial prevention; control of amount of unpreventable contamination; and detection and elimination of remaining contamination

Proportionality of Population Descriptors of Metacercariae of Clinostomum marginatum in the Orobranchial Cavity of Black Bass (Micropterus spp.) from Arkansas Ozark and Ouachita Streams

In a previous study of Clinostomum marginatum metacercariae in Micropterus dolomieu, I reported that the population parameters of mean abundance, standard deviation, maximum abundance, mean intensity and mean intensity standard deviation were proportional between the total population and the orobranchial numbers for 16 locations in Arkansas Ozark and Ouachita streams. This allowed an assessment of the parasite populations by only examining the mouth and gill areas without sacrificing a valued sports fish. The present study examined the same orobranchial parameters utilizing correlation and descriptive statistics to determine if proportionality also existed between the different localities. I have now included an analysis of skewness and kurtosis (drift and shape) of the populations’ curves. Proportionality of regression values was highly significant in terms of R² and P between all parameters except prevalence, which showed much weaker correlations with the other parameters. The interpretation of these results is that the distribution of infections in the different bass populations are density independent i.e., although the numbers of parasites change from location to location, the pattern of distribution in the host populations remains similar. This may best be explained by a spatiality of distance from the infection source (snails) and nonrandom distribution of hosts (bass) producing aggregation near the snails and a negative binomial distribution throughout the population

Multimedia clip type: Quality of perception impact on users with and without hearing loss

This paper investigates how variance in multimedia video clip type affects quality of perception (QoP) for users ith and without hearing loss. QoP encompasses not only a user's satisfaction with the quality of a multimedia presentation (subjective), but also his or her ability to analyse, synthesise and assimilate its’ informational content objective). Results show that clip type has a significant impact on the level of deaf information assimilation. Results uggest that certain video content aids deaf information assimilation, for example: those with less textual content. However, it was found that audio / captioned information does not significantly impact user QoP, when Video-textual (VT) information was found to have a significant effect on both hearing and deaf QoP. A positive correlation was found between predicted level of information assimilation and level of enjoyment, independent of hearing level or clip type