1,721,019 research outputs found
Cheese True Density Prediction by Linear Equations.
No full textKnowledge of cheese density is necessary to accurately predict heat exchange rate occurring during cheese curd cooling or cheese processing, freezing and thawing. Cheese density data are poor in literature. True density of 22 different cheeses was measured by the water displacement method. Linear equations able to predict cheese density from its components mass fraction have been elaborated and vali- dated. The best fit between measured and predicted values was obtained when all the major cheese components were considered in the equation. Also, equations based only on nonfat total solids or moisture and fat content gave a good previ- sion, resulting in an alternative to the universal formula based on components volume fraction that overestimates cheese true density, if air content is not taken into account. The proposed equations may become a powerful instrument to cor- rectly predict true density and to improve accuracy of heat exchange prediction models
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“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
Dust storm monitoring with MODIS data on the Multan region (Pakistan)
No full textDust storm is a complex process influenced by the interaction of earth-atmosphere system, mainly caused by high
wind speed, bared soil and dry air condition. It often takes place in arid and semi-arid areas caused usually by dry and
cold front, resulting in ascending airflows and in turn raising dust to upper levels of atmosphere (Omidvar K. and
Khosravi Y 2012). In recent years, the frequency of dust storm is rising causing more impact on the climate change over
regional and global scale due to its interaction with the solar and terrestrial radiative fields (Shi and Zao, 2003).
Since the 1970s, scientists have succeeded in identifying the outbreaks of dust storms from satellite images by use of
two different techniques, the VIR (visible and near-infrared) and the TIR (thermal infrared) window technique. It has
been shown that the TIR technique has the distinct advantage in detecting dust storms over high albedo surfaces and in
night-times (Zhang P. et al., 2006).
Multan City is a city in the Punjab Province of Pakistan and capital of Multan District, located in the southern part
of the province on the east bank of the Chenab River. Multan city is famous not only for its history but also for its
blinding dust storms. These dust storms occur mainly between May and June due to a moving western disturbance over
the northern areas of Pakistan.
To monitor dust storm in the Multan area MODIS data has been used. MODIS senses the Earth’s entire surface in
36 spectral bands, spanning from the visible (0.415 μm) to the infrared (14.235 μm) regions of the spectrum with spatial
resolutions of 1 km, 500 m, and 250 m at nadir respectively. MODIS data were acquired from NASA DB web service.
The data were georeferenced and reprojected to correct the Bow Tie effect.
When the dust storm happens, lots of dusts particles get together to form a dust cloud. The thick dust layer can
absorb and reflect surface radiation and solar radiation, emitting and radiating at the same time, so the values of sensors
change (Ochirkhuyag and Solmon, 2008). Among the 36 channels of MODIS, the visible and near infrared channels are
used to measure objects reflection while the thermal infrared channels are used to measure objects brightness
temperature
Allergie a Farmaci: un approccio razionale
No full textLe reali allergie a farmaci sono solo il 20% delle reazioni avverse iatrogene: in numeri assoluti non sono molte ma sono in aumento. L'approccio giusto per la valutazione nei diversi casi e per ridurre i rischi inevitabilmente connessi
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Production of pyroglutamic acid by thermophilic lactic acic bacteria in hard cooked mini-cheeses
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