Characterizing Geo-located Tweets in Brazilian Megacities

This work presents a framework for collecting, processing and mining geo-located tweets in order to extract meaningful and actionable knowledge in the context of smart cities. We collected and characterized more than 9M tweets from the two biggest cities in Brazil, Rio de Janeiro and S\~ao Paulo. We performed topic modeling using the Latent Dirichlet Allocation model to produce an unsupervised distribution of semantic topics over the stream of geo-located tweets as well as a distribution of words over those topics. We manually labeled and aggregated similar topics obtaining a total of 29 different topics across both cities. Results showed similarities in the majority of topics for both cities, reflecting similar interests and concerns among the population of Rio de Janeiro and S\~ao Paulo. Nevertheless, some specific topics are more predominant in one of the cities

Pasar Tradisional Tomohon ( Suatu Kajian Antropologi )

Tomohon market is the largest and most comprehensive market which sells a variety of purposes ranging from the Minahasa people cooking spices, ritual paraphernalia, until extreme food. Cultural tourism could not be separated from the role of culture itself. The number tourists visiting a place that is interesting and different from the culture in their place of origin. Curiosity and desire to get satisfaction tourism makes people flocked to tourist activities. Tourism activity generates revenue for the tourism industry, government, local communities and others. The existence of an attraction is also inseparable from the cultural manifestation itself and become tourists to enjoy as a tourist destination. Tomohon government continues to boost market advantages Faithful. Of which serve as centers of Tomohon market commodity vegetables which will then be marketed to the outside Tomohon. City government continues to expose the existence of extreme culinary networking sites via internet or ask for help private companies eg hospitality services or traveling. World tourism company did not escape the attention of Regional Markets as a form of attention in the development of the traditional market town of Tomohon. Famous names Beriman Markets outside the region to make the people who are in other regions and even abroad became curious so as to suck the tourists to visit the place. Thus more and more tourists are coming it will be the more revenue the government. Extreme culinary be the main thing in attracting the attention of tourists seem to produce satisfactory results

第698回 千葉医学会例会・第18回 肺癌研究施設例会 40.

<div><p>Dietary protein restriction is not only beneficial to health and longevity in humans, but also protects against air pollution and minimizes feeding cost in livestock production. However, its impact on amino acid (AA) absorption and metabolism is not quite understood. Therefore, the study aimed to explore the effect of protein restriction on nitrogen balance, circulating AA pool size, and AA absorption using a pig model. In Exp.1, 72 gilts weighting 29.9 ± 1.5 kg were allocated to 1 of the 3 diets containing 14, 16, or 18% CP for a 28-d trial. Growth (n = 24), nitrogen balance (n = 6), and the expression of small intestinal AA and peptide transporters (n = 6) were evaluated. In Exp.2, 12 barrows weighting 22.7 ± 1.3 kg were surgically fitted with catheters in the portal and jejunal veins as well as the carotid artery and assigned to a diet containing 14 or 18% CP. A series of blood samples were collected before and after feeding for determining the pool size of circulating AA and AA absorption in the portal vein, respectively. Protein restriction did not sacrifice body weight gain and protein retention, since nitrogen digestibility was increased as dietary protein content reduced. However, the pool size of circulating AA except for lysine and threonine, and most AA flux through the portal vein were reduced in pigs fed the low protein diet. Meanwhile, the expression of peptide transporter 1 (PepT-1) was stimulated, but the expression of the neutral and cationic AA transporter systems was depressed. These results evidenced that protein restriction with essential AA-balanced diets, decreased AA absorption and reduced circulating AA pool size. Increased expression of small intestinal peptide transporter PepT-1 could not compensate for the depressed expression of jejunal AA transporters for AA absorption.</p></div

Supplementary material from A generalized sound extrapolation method for turbulent flows

Sound extrapolation methods are often used to compute acoustic far-field directivities using near-field flow data in aeroacoustics applications. The results may be erroneous if the volume integrals are neglected (to save computational cost), while non-acoustic fluctuations are collected on the integration surfaces. In this work, we develop a new sound extrapolation method based on an acoustic analogy using Taylor's hypothesis (Taylor 1938 <i>Proc. R. Soc. Lon. A</i> <b>164</b>, 476–490. (doi:10.1098/rspa.1938.0032)). Typically, a convection operator is used to filter out the acoustically inefficient components in the turbulent flows, and an acoustics dominant indirect variable _c<i>p</i>' is solved. The sound pressure <i>p</i>^′ at the far field is computed from _c<i>p</i>' based on the asymptotic properties of the Green's function. Validations results for benchmark problems with well-defined sources match well with the exact solutions. For aeroacoustics applications: the sound predictions by the aerofoil–gust interaction are close to those by an earlier method specially developed to remove the effect of vortical fluctuations (Zhong & Zhang 2017 <i>J. Fluid Mech.</i> <b>820</b>, 424–450. (doi:10.1017/jfm.2017.219)); for the case of vortex shedding noise from a cylinder, the off-body predictions by the proposed method match well with the on-body Ffowcs-Williams and Hawkings result; different integration surfaces yield close predictions (of both spectra and far-field directivities) for a co-flowing jet case using an established direct numerical simulation database. The results suggest that the method may be a potential candidate for sound projection in aeroacoustics applications

Foundations for Envelope Models and Methods

<div><p>Envelopes were recently proposed by Cook, Li and Chiaromonte as a method for reducing estimative and predictive variations in multivariate linear regression. We extend their formulation, proposing a general definition of an envelope and a general framework for adapting envelope methods to any estimation procedure. We apply the new envelope methods to weighted least squares, generalized linear models and Cox regression. Simulations and illustrative data analysis show the potential for envelope methods to significantly improve standard methods in linear discriminant analysis, logistic regression and Poisson regression. Supplementary materials for this article are available online.</p></div

Parsimonious Tensor Response Regression

<p>Aiming at abundant scientific and engineering data with not only high dimensionality but also complex structure, we study the regression problem with a multidimensional array (tensor) response and a vector predictor. Applications include, among others, comparing tensor images across groups after adjusting for additional covariates, which is of central interest in neuroimaging analysis. We propose parsimonious tensor response regression adopting a generalized sparsity principle. It models all voxels of the tensor response jointly, while accounting for the inherent structural information among the voxels. It effectively reduces the number of free parameters, leading to feasible computation and improved interpretation. We achieve model estimation through a nascent technique called the envelope method, which identifies the immaterial information and focuses the estimation based upon the material information in the tensor response. We demonstrate that the resulting estimator is asymptotically efficient, and it enjoys a competitive finite sample performance. We also illustrate the new method on two real neuroimaging studies. Supplementary materials for this article are available online.</p

Crystalline Neutral Aluminum Selenide/Telluride: Isoelectronic Aluminum Analogues of Carbonyls

Neutral aluminum chalcogenides (R–Al(L)Ch; L = ligand, Ch = chalcogen), stabilized by a Lewis base ligand, represent isoelectronic counterparts to carbonyl compounds and have long been pursued for isolation. Herein, we present the synthesis of an aluminum selenide, [N]–Al(iPr2-bimy)Se, and an aluminum telluride, [N]–Al(iPr2-bimy)Te, under ambient conditions ([N] = 1,8-bis(3,5-di-tert-butylphenyl)-3,6-di-tert-butylcarbazolyl; iPr2-bimy = 1,3-diisoproplylbenzimidazole-2-ylidene). These compounds arise from the oxidation reaction of [N]–Al(iPr2-bimy) with Se and (nBu)3PTe, respectively. One notable characteristic of the Al and Ch interaction is the presence of an Al–Ch σ bond, strengthened by the electrostatic attraction between the Al+ and Ch– centers as well as the donation of lone pairs from Ch into vacant orbitals at Al. This results in an Al–Ch multiple bond with an ambiphilic nature. Preliminary investigations into their reactivity unveil their remarkable propensity for facile (cyclo)addition reactions with diverse substrates, including PhCCH, PhCN, AdN3, MeI, PhSiH3, and C6F6, leading to the formation of unprecedented main group heterocycles and alumachalcogenides

Tensor Envelope Partial Least-Squares Regression

<p>Partial least squares (PLS) is a prominent solution for dimension reduction and high-dimensional regressions. Recent prevalence of multidimensional tensor data has led to several tensor versions of the PLS algorithms. However, none offers a population model and interpretation, and statistical properties of the associated parameters remain intractable. In this article, we first propose a new tensor partial least-squares algorithm, then establish the corresponding population interpretation. This population investigation allows us to gain new insight on how the PLS achieves effective dimension reduction, to build connection with the notion of sufficient dimension reduction, and to obtain the asymptotic consistency of the PLS estimator. We compare our method, both analytically and numerically, with some alternative solutions. We also illustrate the efficacy of the new method on simulations and two neuroimaging data analyses. Supplementary materials for this article are available online.</p

Configuration of atypical female units that are transitional to the typical one.

<p><b>A-K are stereomicrography, L-S are SEM</b>. (A) A post-anthetic flower with an atypical female unit (arrow) situated between the male and female sections. The tepals are removed to show inner flower parts. Bar = 10 mm. (B) A flower with several atypical female units (arrows) between the male and female sections. Bar = 10 mm. (C) Detailed view of the atypical female units shown in Fig. 1B. Note the exposed ovules and that, in at least one female unit, the ovuliferous branch (placenta) is obviously separated (arrow) from the subtending foliar part. Bar = 1 mm. (D) Adaxial view of an atypical female unit comprising a subtending foliar part and a placenta in its axil. Papillae (blue arrow) and enrolling margins (white arrow) are seen on the distal of the foliar part. The placenta comprises two slightly fused branches (red arrows), each of which terminates in an ovule (yellow arrow). Bar = 1 mm. (E) One of the ovules in Fig. 1m that is attached to the placenta (red arrow) isolated from the subtending foliar part (black arrow). Bar = 0.5 mm. (F-Q) A serial pairs of LM and SEM images showing female units transitional from atypical to typical configuration. The spatial relationship between the ovules and subtending foliar parts changing from isolated gradually into increasingly fused, and the presence of ovuliferous branch is increasingly hard to see. Figs. 1f-j and 1m-q are from a single flower. Bar = 0.5 mm. (F, M) Anatypical female unit with a configuration similar to that in Fig. 1D. Note the barely fused branches (red arrows, placenta) terminating in ovules (yellow arrows). One of the ovule is shown in detail in Fig. 1e. (G, N) Ovules (yellow arrows) on the tips of branches (placenta, red arrows) subtended by a foliar part. (H, O) Two ovules (yellow arrows) appearing borne on the margins of the foliar part due to the fusion between the two branches (of placenta, red arrows) and foliar part margins. The foliar part has its margins (white arrow) enrolled in the distal portion. (I, P) Further enrolling of the foliar part giving rise to an obvious ventral suture (white arrow). Note the ovules (yellow arrows) are more enclosed than in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0174955#pone.0174955.g002" target="_blank">Fig 2g and 2n</a>. (J) Almost completely closed female unit with obvious ventral suture (white arrow) and only one ovule (yellow arrow) visible. (K) A completely closed female unit. Its ovule (yellow arrow) is fully enclosed and visible only when the female unit is cut at the bottom. (L) A closed female unit that fails to enclose its ovules. (Q) Almost completely closed female unit with obvious ventral suture (white arrow) and only one ovule (yellow arrow) visible. (R) A cross-cut typical female unit showing the ovules (yellow arrows) fused to the margins (white arrows) of the foliar part. Only this image was slightly horizontally squashed to fit into the space available. Bar = 0.2 mm.</p

Anatomy of typical fruits showing vascular bundles in the fruit wall and placenta.

<p>(A) Longitudinal radial section of a fruit showing dorsal (d) and ventral (v) bundles, and placenta bundle (p) supplying the ovules (o). Bar = 1 mm. (B) Detailed view enlarged from Fig. 2a, showing dorsal bundle (d), ventral bundle (v), placenta bundle (p) supplying the ovules (arrows). Bar = 0.1 mm. (C) Longitudinal section of a collateral dorsal bundle in the fruit wall, showing adaxial xylem (to the left of white line) and abaxial phloem (to the right of white line). Bar = 50 μm. (D) Cross view of a collateral stellar bundle (black line) with adaxial xylem (below white line) and abaxial phloem (above white line). Bar = 20 μm. (E) Cross view of an amphicribral placenta bundle (black line) with xylem (within in the white line) surrounded by phloem (between the white and black lines). The bundles is extended (gray line) above to an ovule. Bar = 20 μm.</p