86,986 research outputs found
Computer simulation of radio-frequency heating applied to block-shaped foods: Analysis on the role of geometrical parameters
No full textDuring radio frequency (RF) processing, geometrical factors such as distance between electrodes and projection of top electrode on the samples' exposed surface area (area that electric field passes through the sample) have a certain effect on power absorption, temperature distribution, heating rates and heating uniformity in the samples. Knowing the role played by these factors can be helpful for further studies in optimization of design parameters of an RF heating process. Therefore, to evaluate effect due to distance between electrodes and projection area during RF heating process, samples of same volume but exhibiting different projection areas were used to determine the variability in their power absorption, temperature change and heating rates. RF electrodes in this system were positioned with a fixed gap between samples' top-bottom surfaces and the electrodes and, case by case, at different distance between electrodes. The results indicated that both parameters have strong effect on power absorption, temperature distribution, heating rates and heating uniformity in the samples, which is further amplified when it is combined with the change of dielectric properties with temperature. In the investigated range, wider projection area and shorter distance between electrodes led to faster heating, in terms of average temperature, but less uniform temperature distribution, at least in the early stage of the RF heating process, before the changes in dielectric properties of the heated load started modifying the trend of the loss tangent and penetration depth. The results of this study are expected to be used in planning geometrical configuration and design parameters of RF systems and sample dimensions for further optimization studies. © 2016 The Institution of Chemical Engineers
Perflorooktanoik asit ile uyar lm testiküler hasarlara kar Giresun f nd k ya n n koruyucu etkileri
No full textBu çal mada yayg n çevresel kirletici olan perflorooktanoik asit (PFOA) ile uyar lm testiküler hasarlara kar Giresun f nd k ya n n koruyucu etkisi ara t r lm t r. Balb/c yeti kin erkek farelerin kullan ld deneysel a amalarda; kontrol grubu, PFOA uygulanan grup, Giresun f nd k ya uygulanan grup ve PFOA+Giresun f nd k ya uygulanan grup kullan lm t r. Bu gruplara ait vücut ve testis a rl , sperm say s , sperm canl l , sperm morfolojisi, sperm motilitesi, serum testosterone seviyesi de i imleri izlenmi ve farkl l klar istatistiksel olarak s nanm t r. Ayr ca, genel histolojik de erlendirme ve TUNEL immunohistokimyasal de erlendirme yap lm t r. Sonuç olarak, vücut a rl , testis a rl , sperm say s , sperm motilitesi, sperm canl l ve serum tetosteron seviyesindeki azalmalar n yan s ra histolojik deformasyonlar PFOA uygulamalar n n hedef dokuya yönelik seçici bir etki gösterdi ini ortaya koymu tur. Bununla birlikte, Giresun f nd k ya uygulamalar n takiben histolojik ve biyokimyasal parametrelerdeki belirgin iyile meler, PFOA kaynakl toksik etkilerin önemli ölçüde bask land n göstermi tir
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
The Role of EU Institutions in Common Trade Policy: An Assessment on EU-Canada Comprehensive Economic and Trade Agreement
No full textWhat are the roles of the European Union (EU)’s main institutions in common trade policy? To address this question, this study uses a political-economic approach. The positions of the European Commission, Council of the European Union and European Parliament on EU-Canada Comprehensive Economic and Trade Agreement (CETA) are examined. The study uses content analysis as a research methodology, based on a categorization of values and economic interests projected by the EU’s contemporary trade strategy “Trade for All”. Differently from previous studies which use a political-economic approach to analyze the EU’s external relations with developing countries, this article makes a contribution to EU trade policy literature by combining a political-economy perspective with an institutional one to examine a EU trade agreement signed with a highly industrialized country. Within this context, the findings reveal that the Parliament and Council are more value-oriented, than economic interest-oriented. The Commission is instead found slightly more economic interest-oriented than value-oriented. However, the priorities of three institutions do not diverge significantly in terms of political economy. Each institution manages to impose its own priorities on both the (value-related) normative and (interest-related) material parts of CETA and agrees on producing a neoliberal economic outcome
Comparative analysis of regression output summary statistics in common statistical packages
No full textAn important question in applied statistics is whether statistical regression programs output distorted summary statistics (F and R2) for a no-intercept regression model. Uyar and Erdem recently confirmed this problem using one of the premier statistical packages. This article extends the Uyar-Erdem experiment to eight common statistical and econometric regression packages. Only four of them warn users that the R2 has been redefined for a model without an explicit intercept. Consequently, the problem Uyar and Erdem identified extends in varying degrees, ranging from mild to severe, to many other regression packages. © 1993 Taylor & Francis Group, LLC
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
Also By The Same Author: AKTiveAuthor, a Citation Graph Approach to Name Disambiguation
No full textThe desire for definitive data and the semantic web drive for inference over heterogeneous data sources requires co-reference resolution to be performed on those data. In particular, name disambiguation is required to allow accurate publication lists, citation counts and impact measures to be determined. This paper describes a graph-based approach to author disambiguation on large-scale citation networks. Using self-citation, co-authorship and document source analyses, AKTiveAuthor clusters papers, achieving precision of 0.997 and recall of 0.818 over a test group of eight surname clusters
John F. Kennedy telegram to Roosevelt
No full textJersey Homesteads (later the Borough of Roosevelt) was established in the 1930s as an agro-industrial cooperative community. It was established specifically for urban Jewish garment workers, many of whom had emigrated from Europe. President John F. Kennedy sent a telegram to the citizens of Roosevelt, New Jersey, apologizing for not being able to attend the memorial dedication in honor of former President Franklin Delano Roosevelt. (Jersey Homesteads became Roosevelt in 1945 in honor of the president.) President Kennedy expressed his gratitude to the people of Roosevelt for constructing the memorial, and commented that it will serve as a constant reminder of Roosevelt's good works
Logarithmic variance profiles and the corresponding f-1 spectra of temperature fluctuations in turbulent Rayleigh-Bénard convection
No full textWe report experimental results for the temperature variance 2(z) and the corresponding frequency spectra P(f) in turbulent Rayleigh-Bénard convection (RBC) in a cylindrical sample of aspect ratioT= D/L = 1:00 (D = 1:12 m is the diameter and L = 1:12 m the height). The measurements were conducted in the Rayleigh-number range 1011 < Ra < 1:35 1014 and Pr ' 0:8. For Ra = 1:35x1014, 2(z) could be described well by a logarithmic dependence on the vertical position z in a range of z 1 < z < z 2 with z 1 ' 70 and z 2 = 0:1L. Here L=(2Nu) is the thickness of a thin thermal sublayer adjacent to the horizontal plate where the heat flux (denoted by the Nusselt number Nu) is carried mostly by thermal diffusion. In the log layer, we found that the temperature spectra had a significant frequency range over which P(f) f with close to 1. As Ra decreased, increased so that the log layer became thinner. At Ra = 2:05 1011, z 2 < z 1 and therefore there was no range for a log layer. Correspondingly, the temperature spectrum near the horizontal plate did not have the f1 scaling form either
Maine author Franklin F. Gould recalls his first glimpse of the outside world
No full textMaine author Franklin F. Gould recalls his first glimpse of the outside world as he relates how, as a young farm boy in the late 1800\u27s, he drove his father\u27s horses on an errand to an icebound river
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