Miracle-dz/UniFAR-FTUs huggingface dataset:
Periodo de interferencia de arvenses en el cultivo de berenjena (Solanum melongena L.)

Dada la importancia de la berenjena en la horticultura del Caribe colombiano, el presente trabajo busco establecer las bases de un manejo sustentable e integrado de malezas en este cultivo, basado en el periodo de maxima interferencia de aquellas sobre este. El estudio se realizo en la Universidad de Cordoba, ubicada en Monteria (8°39’ N; 75°58’ W). El diseno experimental consistio en bloques completamente aleatorizados, con cuatro repeticiones y siete tratamientos relacionados con periodos crecientes de control de arvenses, seguidos por ausencia de control. Los resultados muestran que las arvenses con mayor presencia fueron paja mona (Leptochloa filiformis [Lam.] Beauv.), caminadora (Rottboellia cochinchinensis [Lour.] W.D. Clayton), liendre de puerco (Echinochloa colona [L.] Link.), coquito (Cyperus rotundus L.) y bledo (Amaranthus retroflexus L.). Las arvenses afectaron la altura de la planta, el diametro del tallo, y el rendimiento y calidad del fruto. Este ultimo parametro no se ve afectado cuando el cultivar lila se mantiene limpio durante los primeros 40 dias. Al considerar el tipo de productor de esta hortaliza en el valle del Sinu, se sugiere utilizar: i) para areas pequenas, metodos fisicos, como el arranque manual o corte con machete u otra herramienta, y practicas culturales; ii) para areas grandes, la combinacion de herbicidas de presiembra con metodos fisicos y culturales.
Ontogenetic shifts in the trophic ecology of two alvinocaridid shrimp species at hydrothermal vents on the Mariana Arc, western Pacific Ocean

The Mariana Arc of submarine volcanoes has recently been the site of an international, in- terdisciplinary study into the structure and function of the associated hydrothermal systems. A broad size range of juvenile alvinocaridid shrimp, Opaepele loihi and Alvinocaris sp. M (diagnosis in preparation by R. Webber), were collected from active sites on NW Rota-1 and NW Eifuku volcanoes. Fatty acid bio- markers and stable isotopes of carbon and nitrogen revealed a photosynthetic signal in small juveniles of both species, probably acquired during a pelagic larval phase. Size-related changes in the fatty acid composition of both species indicated a dietary switch from pelagic feeding on photosynthetic material to ingestion of bacteria at vent sites after settlement. This is especially true for O. loihi, where carbon iso- topic signatures implied ingestion of bacteria with form II RuBisCo. Juvenile Alvinocaris sp. M also ap- pear to have eaten bacteria, although probably those with form I RuBisCo; detritus may also feature in their diet at an early stage. With increasing size, the fatty acid and isotopic composition of Alvinocaris sp. M implied a lesser dependence on bacterivory and a possible switch to carnivory. Generally, Alvinocaris sp. M and O. loihi are more similar in their biochemical composition to opportunistic alvinocaridids than to strict bacterivores. We suggest that as juveniles both species rely to varying degrees on bacteria and that opportunism and scavenging are likely sources of nutrition in older individuals.
Reconﬁgurable Pipelined Coprocessor for Multi-mode Communication Application

The need to integrate multiple wireless communication protocols into a single low-cost, low-power hardware platform is prompted by the increasing number of emerging communication protocols and applications. This paper presents an efﬁcient design methodology for integrating multiple wireless communication baseband protocols in a pipelined coprocessor which can be programmed to support various baseband protocols. This coprocessor can dynamically select the suitable pipeline stages for each baseband protocol. Moreover, each carefully designed stage is able to perform a certain signal processing function in reconﬁgurable fashion. The proposed method is ﬂexible (compared to ASICs) and suitable for mobile application (compared to FPGAs). The area size of the coprocessor is smaller than an ASIC or FPGA implementation of multiple individual protocols, while the overheads of timing delay (40% worse than ASICs and 30% better than FPGA) and power consumption (6X worse than ASICs, 100X better than FPGA on average) are kept within reasonable levels. Moreover, fast protocol switching is supported. Wireless LAN (WLAN) 802.11a, WLAN 802.11b and Ultra Wide Band (UWB) transmission circuits are developed and mapped to the pipelined coprocessor to prove the efﬁcacy of our proposal.
LOOKING FOR INFORMATION VERSUS LOOKING FOR INTERACTIVITY: A COMPARATIVE ANALYSIS OF CONSUMERS’ MOTIVES FOR USING WEBSITES AND WEBLOGS

The present study employed Uses and Gratification Theory to analyze consumers’ motives for using websites and weblogs to learn more about a specific product. In an online study (N = 182) four primary motives were located both for using websites and using weblogs: Convenience, information, entertainment and interactivity. Moreover, findings indicate that the motives differ significantly between the two media channels investigated.
Validation study of voxel phantom monte carlo simulations with EGSnrc C++ class library

The aim of this work is to validate an in-house tool which writes voxel phantoms input files according to EGSnrc C++ class library (egspp) for Monte Carlo simulations. This tool was developed to read a phantom binary file and write a voxel phantom input deck file according to egspp structures. For the validation of the new tool, three voxel phantoms from literature considering different levels of complexity were used. They are the DM_BRA mouse phantom, Golem anthropomorphic phantom, and Case 5 XCAT model phantom from AAPM TG 195 report. For the different cases of study, internal and external photon sources were set and the energy deposition for different source and target tissue/organs were calculated. The results showed good agreement when comparing to dose calculates obtained with other Monte Carlo codes and published in the literature. The new tool was then validated for the egspp Monte Carlo studies with voxel phantoms.
Impact of Two Hydrophilic Acrylic-Based Polymers on the Physical Properties of Three Substrates and the Growth of Petunia ×hybrida `Brilliant Pink'

Hydrophilic polymers or hydrogels have shown potential to increase water retention of media and to reduce irrigation frequency. This property would be particularly useful in the production of fast growing species in which large amounts of water are needed. This study evaluated the effect of two acrylic-based hydrogels on water desorption curve and hydraulic conductivity of substrates and on plant growth. The duration of their effects was also investigated. Rooted cuttings of Surfi nia (Petunia ×hybrida 'Brilliant Pinkʼ) were transplanted into 30-cm pots containing one of three different substrates amended with one of two types of hydrogels, a commercial acrylic polymer, and a commercial acrylic-acrylamide copolymer, and grown for 9 weeks under well watered conditions and then imposed with a drought. Results indicated that both polymer types gave similar results. The substratesʼ physical properties (air-fi lled porosity, available water) at potting time were signifi cantly affected by hydrogel addition, but differences vanished within 9 weeks of growth. Hydrogels had no signifi cant effect on the point at which plant wilted and on the substrateʼs unsatu- rated hydraulic conductivity. Shoot dry weight was affected by substrate and hydrogel and was positively correlated to water content between container capacity and -10 kPa of water potential, or between container capacity and the soil water potential at plant turgor loss.
Simulating Infant Visual Learning by Comparison: An Initial Model

Researchers have recently found that 3-month-old infants are capable of using analogical abstraction to learn the same or different relation, given the right conditions (Anderson et al. 2018). Surprisingly, seeing fewer distinct examples led to more successful learning than seeing more distinct examples. This runs contrary to the prediction of standard learning theories, which hold that a wider range of examples leads to better generalization and transfer, but is compatible with other findings in infant research (Casasola 2005; Maguire et al. 2008). Anderson et al. (2018) propose that this is due to interactions between encoding and analogical learning. This paper explores that proposal through the lens of cognitive simulation, using automatically encoded visual stimuli and a cognitive model of analogical learning. The simulation results are compatible with the original findings, thereby providing evidence for this explanation. The assumptions underlying the simulation are delineated and some alternatives are discussed.
Running head: PRAY FOR PARIS #PrayForParis: Why exactly do we change our profile pictures on Facebook?

Today, Facebook users produce around four million likes per minute and publish more than three million posts every minute. A lion share of these posts and likes are concerned with tragedies happening all around the globe such as the Paris attack of 2015 or the terror attack in Barcelona of 2017. This study investigates why people post and share tragic news and how this communicative behavior relates to users' political activity. Drawing upon uses and gratifications theory as well as on the online political self-efficacy (OPSE) scale, we surveyed Facebook users (N = 314) and found out that the level of OPSE was significantly correlated with the Likelihood of posting tragic news on Facebook. We also explored what needs are associated with users' willingness to post tragic news on Facebook.
Relationships Are Key to Overcoming Barriers Posed By Election Cycles: A Qualitative Description of Canadian Integrated Knowledge Translation Partners

Community engagement is central to a research process called integrated knowledge translation (IKT), which is characterized by the co-creation of knowledge among various partners. Families First Edmonton used an IKT partnership model to address poverty issues over a 15-year period. The purpose of this study is to describe barriers to the sustainability of this IKT partnership and how these were overcome. We generated interview data with 23 IKT partners who worked with or within municipal and provincial governments; we used qualitative description to frame our data and conventional qualitative content analysis for data analysis. Partners described the ways in which election cycles threatened the sustainability of the IKT partnership and posed barriers to their work. Three barriers were identified by partners: 1) narrowed windows of opportunity, 2) muddled directions and priorities, and 3) changed project partners. According to partners who collaborated across academic, government, and community settings, relationships offset these barriers through various mechanisms, including long-term relationship building, ongoing contact, and a recognition that while success may be subtle, resulting ripple effects can have important impacts over time. Relationships represent an important investment for partners who continue to work in narrow time frames imposed by election cycles. Partners indicated that relationships are a key strategy to ensuring sustainability of the IKT partnership and can have a farther-reaching impact than policy change.
A Fast Neighborhood Grouping Method for Hyperspectral Band Selection

Hyperspectral images can provide dozens to hundreds of continuous spectral bands, so the richness of information has been greatly improved. However, these bands lead to increasing complexity of data processing, and the redundancy of adjacent bands is large. Recently, although many band selection methods have been proposed, this task is rarely handled through the context information of the whole spectral bands. Moreover, the scholars mainly focus on the different numbers of selected bands to explain the influence by accuracy measures, neglecting how many bands to choose is appropriate. To tackle these issues, we propose a fast neighborhood grouping method for hyperspectral band selection (FNGBS). The hyperspectral image cube in space is partitioned into several groups using coarse-fine strategy. By doing so, it effectively mines the context information in a large spectrum range. Compared with most algorithms, the proposed method can obtain the most relevant and informative bands simultaneously as subset in accordance with two factors, such as local density and information entropy. In addition, our method can also automatically determine the minimum number of recommended bands by determinantal point process. Extensive experimental results on benchmark data sets demonstrate the proposed FNGBS achieves satisfactory performance against state-of-the-art algorithms.
Interdemic Selection and the Sex Ratio: A Social Spider Perspective

Computer simulations of a metapopulation model that mimics social spider populations show that highly female-biased sex ratios evolve when continuously inbreeding lineages (colonies) proliferate differentially to replace other lineages that have become extinct. When lineages of any size proliferated, that is, when the advantage to the colony of producing more females was removed, biased sex ratios did not evolve despite extreme conditions of inbreeding. Selection at the colony level is therefore necessary to counteract Fisherian selection within colonies, which here is shown to be acting regardless of the degree of population subdivision. Smaller size of the founding groups and lower migration rates resulted in more female-biased sex ratios because they reduced the within-group genetic variance and increased the variance among groups and therefore made selection among groups more effective. The outcome of the selective process, however, depended not only on the degree of population subdivision (i.e., the ratio of the variances), but also on the relative rate of turnover of the groups and the individuals within them: the lower the rate of colony turnover, the less biased the equilibrium sex ratio. The threshold size for proliferation, brood size, and conditional control over the production of at least one male also affected the equilibrium sex ratio under some of the conditions investigated
Proximate, Fatty Acid Profile and Heavy Metal Content of Selected By-Catch Fish Species from Muara Angke, Indonesia

Proximate content, fatty acid and heavy metal content were determined for the ten by-catch fish species from Muara Angke, Indonesia. The proximate composition was found to be 15.00-17.70% protein, 0.44-2.78% fat, 69.01-76.61% water, 2.69-5.94% ash and 1.32-6.68% carbohydrate, whereas the fatty acid compositions consist of 14.55-36.83% saturated fatty acids (SFA), 4.92-21.1% monounsaturated fatty acid (MUFA) and 10.9-23.06% polyunsaturated fatty acids (PUFAs). Among them, those occurring in the highest proportions were myristic acid (C14:0, 0.12-7.59%), palmitic acid (C16:0, 0.02-20.5%), stearic acid (C18:0, 0.42-49.19), oleic acid (C18:1, 0.29-50.09%), linoleic acid (C18:2, 0.23- 44.91%), eicosapentaenoic acid (EPA, C20:5n3, 0.41- 4.61%) docosahexaenoic acid (DHA, C22:6n3, 0.28-3.44%). The rest of the heavy metal content, Pb, Cd, Ni, Hg and As were all present in amounts below toxic levels.
BAD-REPUTATION FIRMS VS GOOD-REPUTATION FIRMS; AN ANALYSIS OF REPUTATION-RELATED RISK ON CORPORATE PERFORMANCE

We analyze the effect of reputation-related risk on the performance of U.S. firms. We use a conditional empirical approach in order to explain the daily returns of five types of portfolios. Different specifications of reputation-related risk factors are considered based on aggregate, dimensional or dynamic combinations. Our results support the presence of a reputation effect for the U.S. market between 2004 and 2014. This is expressed by a superior performance by conditional financial asset valuation models that include reputational risk factors. JEL Classifications: G17 ; G32 ; M14
Fatores associados à prática de atividade física entre trabalhadores brasileiros

RESUMO Avaliaram-se os fatores associados à prática de atividade física de trabalhadores brasileiros. Trata-se de estudo descritivo, analítico, transversal, quantitativo, realizado com 82.019. 207 trabalhadores por meio da Pesquisa Nacional por Amostra de Domicílios de 2015. Para verificar a associação da prática de atividade física dos trabalhadores, estimou-se a Odds Ratio (OR) com p<0,05 por meio de modelo de regressão logística com Intervalo de Confiança (IC) de 95%. Verificou-se que somente 31,7% dos trabalhadores praticavam atividade física. A possibilidade de praticar diminuiu com o aumento da idade, principalmente para aqueles do sexo masculino entre 46 e 55 anos (OR 0,626, IC 0,565-0,693), bem como para as trabalhadoras que possuíam filhos menores de 14 anos (OR 0,569, IC 0,474-0,682) e com elevada carga horária laboral. Do trabalho informal para o formal, ocorreu aumento da prática em 17,9%. Tanto a elevação da escolaridade como a salarial aumentaram essa chance em, respectivamente, 5,719 para aqueles com quinze anos ou mais de estudo e em 2,365 para aqueles que auferem renda entre doze e quinze salários mínimos. Por fim, os militares possuíam maior chance de praticar atividade física (OR 5,586, IC 3,572-8,736).
Highly smooth minimization of non-smooth problems

We establish improved rates for structured non-smooth optimization problems by means of near-optimal higher-order accelerated methods. In particular, given access to a standard oracle model that provides a p th order Taylor expansion of a smoothed version of the function, we show how to achieve ε -optimality for the original problem in ˜ O p (cid:16) ε − 2 p +2 3 p +1 (cid:17) calls to the oracle. Furthermore, when p = 3 , we provide an efﬁcient implementation of the near-optimal accelerated scheme that achieves an O ( ε − 4 / 5 ) iteration complexity, where each iteration requires ˜ O (1) calls to a linear system solver. Thus, we go beyond the previous O ( ε − 1 ) barrier in terms of ε dependence, and in the case of (cid:96) ∞ regression and (cid:96) 1 -SVM, we establish overall improvements for some parameter settings in the moderate-accuracy regime. Our results also lead to improved high-accuracy rates for minimizing a large class of convex quartic polynomials.
A Simple Method for Artificial Infection of Tsetse, Glossina Morsitans Morsitans Larvae with the DNA Virus Of G. Pallidipes

Newly deposited Glossina morsitans morsitans larvae were chilled over ice and inoculated with 1 μl of either virus suspension derived from Glossina pallidipes salivary gland homogenate or sterile tsetse physiological saline. They were allowed to pupariate and then maintained at 25°C, 70% r.h. until soon after emergence when their salivary glands were examined for enlargement and presence of virus particles. Teneral G. m. morsitans which received the virus inoculum (n = 135) as larvae all became infected as revealed by gross hypertrophy of their salivary glands and ultrastructural manifestation of virus particles within the glandular epithelial cells and lumina. In the control group, which received the tsetse physiological saline (n = 91), only 1.1% of the flies showed the salivary gland enlargement, a level equivalent to the prevalence of virus infection normally detectable in the G. morsitans colony. This technique opens the way for testing the biocontrol potential of this virus. The DNA virus from G. pallidipes is clearly infective to G. morsitans morsitans, suggesting that the hypertrophied, chalky-white salivary glands, reported in various Glossina spp. , are a manifestation of infection by one and the same virus. RésuméLes larves de Glossina morsitans morsitans nouvelement déposées étaient refroidies sur la glace et inoculées avec 1 μl soit d’une suspension de virus provenant d’homogenat de glandes salivaires de Glossina pallidipes ou d’une solution physiologique sterile de tsétsé. Les larves se sont transformées en pupes puis maintenues à une temperature de 25°C et une humidité relative de 70% jusqu’à l’emergence lorsque leur glandes salivaires étaient examinées pour la présence des virus. Tous les 135 jeunes G. m. morsitans provenant des larves ayant été inoculées par des virus ont subit l’infection comme révélé par l’hypertrophie des glandes salivaires et la manifestation ultrastructurale des particules des virus au niveau des cellules épitheliales glandulaires et du lumen. Quant aux mouches tsétsé qui n’ont reçu que la solution physiologique (et utilisés comme contrôle), seulement 1, 1% de 91 jeune G. m. morsitans ont montré l’agrandissement des glandes salivaires, un niveau équivalent à l’incidence de l’infection du virus normalement rencontrée dans la colonie de G. morsitans. Le succès de cette technique ouvre une voie pour tester, l’utilisation de ce virus comme agent potentiel dans la lutte biologique. Le virus ADN provenant de G. pallidipes sans doute infecte G. m. morsitans. Ceci suggère que les glandes salivaires hypertrophiées observées chez différentes espèces de Glossines sont des manifestations d’infection causées par le même virus.
In vitro anti-malarial activity of 20 quinones isolated from four plants used by traditional healers in the Democratic Republic of Congo.

The anti-malarial activity of 20 quinones isolated from Cassia alata , Cassia occidentalis , Garcinia kola and Ocimum basilicum was investigated in vitro using the micro dilution test of Desjardin by a visual evaluation on thin blood smears. The six quinones isolated from C. occidentalis , three from C. alata and three from O. basilicum were found to be the most active with an IC 50 value of below 1 µg/ml. The others quinones showed a moderate activity with IC 50 values of between 5 and 20 µg/ml.
On the effect of age on the transmission of SARS-CoV-2 in households, schools and the community

There is limited information on the effect of age on the transmission of SARS-CoV-2 infection in different settings. We undertook a review of published data/studies on detection of SARS-CoV-2 infection in contacts of COVID-19 cases, as well as serological studies, and studies of infections in the school setting to examine those issues. Those sources suggest significantly lower susceptibility to infection for children aged under 10 years compared to adults, for elevated susceptibility to infection in adults aged over 60y, and for the risk of SARS-CoV-2 infection associated with sleeping close to an infected individual. Those sources also suggest that younger adults (particularly those aged under 35y) often have high rates of SARS-CoV-2 infection in the community. Additionally, there is evidence of robust spread of SARS-CoV-2 in high schools, and more limited spread in primary schools. Some countries with relatively large class sizes in primary schools (e.g. Chile and Israel) reported sizeable outbreaks in some of those schools, though the amount of transmission occurring in these schools (vs. outside) is not clear from current reports. Nonetheless, these reports suggest that classroom crowding and other factors related to social distancing in classrooms/schools may play a role in the spread of SARS-CoV-2 in primary schools. Those findings should have implications for school openings in different age groups of children, and they suggest the need to better protect adults over the age of 60 during the community spread of SARS-CoV-2.