Distribution-Based Categorization of Classifier Transfer Learning

Transfer Learning (TL) aims to transfer knowledge acquired in one problem, the source problem, onto another problem, the target problem, dispensing with the bottom-up construction of the target model. Due to its relevance, TL has gained significant interest in the Machine Learning community since it paves the way to devise intelligent learning models that can easily be tailored to many different applications. As it is natural in a fast evolving area, a wide variety of TL methods, settings and nomenclature have been proposed so far. However, a wide range of works have been reporting different names for the same concepts. This concept and terminology mixture contribute however to obscure the TL field, hindering its proper consideration. In this paper we present a review of the literature on the majority of classification TL methods, and also a distribution-based categorization of TL with a common nomenclature suitable to classification problems. Under this perspective three main TL categories are presented, discussed and illustrated with examples

Estrutura populacional de Ilex paraguariensis St. Hil. (Aquifoliaceae) em fragmentos de floresta ombrófila mista.

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Stacked Denoising Autoencoders and Transfer Learning for Immunogold Particles Detection and Recognition

In this paper we present a system for the detection of immunogold particles and a Transfer Learning (TL) framework for the recognition of these immunogold particles. Immunogold particles are part of a high-magnification method for the selective localization of biological molecules at the subcellular level only visible through Electron Microscopy. The number of immunogold particles in the cell walls allows the assessment of the differences in their compositions providing a tool to analise the quality of different plants. For its quantization one requires a laborious manual labeling (or annotation) of images containing hundreds of particles. The system that is proposed in this paper can leverage significantly the burden of this manual task. For particle detection we use a LoG filter coupled with a SDA. In order to improve the recognition, we also study the applicability of TL settings for immunogold recognition. TL reuses the learning model of a source problem on other datasets (target problems) containing particles of different sizes. The proposed system was developed to solve a particular problem on maize cells, namely to determine the composition of cell wall ingrowths in endosperm transfer cells. This novel dataset as well as the code for reproducing our experiments is made publicly available. We determined that the LoG detector alone attained more than 84\% of accuracy with the F-measure. Developing immunogold recognition with TL also provided superior performance when compared with the baseline models augmenting the accuracy rates by 10\%

Productivity and physiological quality of soybean seed originated from plants desiccated by carfentrazone-ethyl

O experimento teve como objetivo avaliar o efeito do herbicida carfentrazone-ethyl aplicado como dessecante na cultura da soja, sobre a produtividade e a qualidade fisiológica das sementes. O delineamento experimental foi o de blocos ao acaso com dez tratamentos e quatro repetições e com parcela composta de 8 linhas, cada uma com 5 m de comprimento. Os tratamentos aplicados sobre o cultivar FT-Jatobá, foram os seguintes: I) testemunha, sem dessecante; 2) carfentrazone-ethyl (50 g/ha); 3) carfentrazone-ethyl (70 g/ha); 4) carfentrazone-ethyl + MSMA (50 + 480 g/ha); 5) carfentrazone-ethyl + MSMA (60 + 408 g/ha); 6) carfentrazone-ethyl + MSMA (70 + 336 g/ha); 7) MSMA (1200 g/ha); 8) amônio glufosinato (500 g/ha); 9) paraquat (400 g/ha) e \ O) diuron/paraquat (250 / 500 g/ha). Os produtos foram aplicados por meio de pulverizador costal pressurizado à base de CO2, entre os estádios fenológicos R, e R7 e com umidade nos grãos entre 32 e 40%. Foram avaliadas as seguintes características: produtividade de grãos, umidade de colheita, teste padrão de germinação, teste de primeira contagem, envelhecimento acelerado, umidade após envelhecimento acelerado, emergência em campo e condutividade elétrica. Concluiu-se que o herbicida carfentrazone-ethyl aplicado como dessecante na cultura da soja, individualmente nas doses de 50 e 70 g/ha e em conjunto com o herbicida MSMA nas doses de 50 + 480, 60 + 408 e 70 + 336 g/ha, não interfere na produtividade e na qualidade fisiológica das sementes. Pelo fato de tratar-se de um novo herbicida, cuja eficiência como dessecante é pouco conhecida, recomenda-se a realização de mais pesquisas sobre o assunto. The purpose of the experiment was to evaluate the application of carfentrazone herbicide as desiccant on a soybean crop and its effect on soybean seed yield and physiological quality. A randomized complete block design with 10 treatments and 4 replications was set up. The experimental plot consisted of 8 rows, each 5 m long. The following treatments were applied to plants of the FT-Jatobá cultivar: I) control, without desiccant; 2) carfentrazone (50 g/ha); 3) carfentrazone (70 g/ ha); 4) carfentrazone + MSMA (50 + 480 g/ha); 5) carfentrazone + MSMA (60 + 408 g/ha); 6) carfentrazone + MSMA (70 + 336 g/ha); 7) MSMA (1200 g/ha); 8) amonium gluphosynato (500 g/ha); 9) paraquat (400 g/ha) and 10) diuron / paraquat (250 / 500 g/ha). The desiccants were applied with a carbon dioxide-pressurized backpack sprayer, between R6 and R7 soybean development stages, the seeds having between 32 and 40% humidity. The following characteristics were analyzed: w~ter conten~, standard germination, first count of standard germination, accelerated aging, water content after accelerated ~gl~g.' electr~c condutivity and seed yield. It was concluded that carfentrazone applied as a desiccant on soybean crops, individually m dos~ges of 50 and 70 glha or with MSMA at dosages of 50 + 480, 60 + 408 and 70 + 336 glha, did not affect the soybean seed yield and their physiological quality. More studies on carfentrazone-ethyl as a desiccant of soybean is necessary

Theoretical and experimental studies of aryl-bithiophene based push-pull pi-conjugated heterocyclic systems bearing cyanoacetic or rhodanine-3-acetic acid acceptors for SHG nonlinear optical applications

A series of push-pull aryl-bithiophene based systems 2-3 were designed and synthesized in order to understand how structural modifications influence the electronic, linear and nonlinear optical properties. The push-pull conjugated chromophores 2-3 bear a bithiophene spacer conjugated with a phenyl ring functionalized with N,N-dialkylamino electron-donor groups together with cyanoacetic or rhodanine-3-acetic acid acceptor groups. Theoretical (DFT calculations) and experimental studies were carried out to obtain information on conformation, electronic structure, electron distribution, dipolar moment, and molecular nonlinearity response of the push-pull bithiophene derivatives. This multidisciplinary study revealed that chromophore 2e exhibits the highest value for hyperpolarizability beta (10440 × 10-30 esu) due to the strong electron donating ability of the N,N-diethylamino group, and the ethyne linker that not only lengthens the pi- conjugation path but also grants less distortion to the system.Thanks are due to Fundação para a Ciência e Tecnologia (FCT) for a PhD grant to S. S. M. Fernandes (SFRH/BD/87786/2012) and FEDERCOMPETE for financial support through the CQ/UM (Ref. UID/QUI/ 00686/2013 and UID/QUI/0686/2016). The NMR spectrometer Bruker Avance III 400 is part of the National NMR Network and was purchased within the framework of the National Program for Scientific Reequipment, contract REDE/1517/RMN/2005 with funds from POCI 2010 (FEDER) and FCT. The pulsed laser system was acquired within the framework of the grant (PTDC/CTM/105597/2008) from the Fundação para a Ciência e Tecnologia (FCT) with funding from FEDERCOMPETE. This work was also supported by the Associated Laboratory for Sustainable Chemistry - Clean Processes and Technologies - LAQV which is financed by Portuguese national funds from FCT/MEC (UID/ QUI/50006/2013) and co-financed by the ERDF under the PT2020 Partnership Agreement (POCI-01-0145-FEDER–007265).info:eu-repo/semantics/publishedVersio

Dinâmica de decomposição e composição química de palhada de cana-de-açúcar no Cerrado.

A decomposição de resíduos vegetais de cana-de-açúcar dispensa a queima da palhada e promove melhorias na conservação do solo com a redução de perdas de água e de nutrientes. Assim, este trabalho teve como objetivo avaliar as relações entre a decomposição da palhada e a composição química desses resíduos em área de cana-de-açúcar na Usina Goiasa, em Goiatuba GO-Brasil. As amostras foram armazenadas em litter bags e colocadas no campo, sob a camada de palhada de cana-de-açúcar, sendo retiradas periodicamente durante 563 dias para a quantificação da decomposição, análise bromatológica (lignina, FDA e FDN) e de nitrogênio (N) total dos resíduos remanescentes. A meia vida dos resíduos de cana-de-açúcar foi de 118 dias. Após 365 dias a quantidade remanescente de resíduos foi de 36% em relação à massa inicial. Os teores de N total aumentaram ao longo das fases de decomposição dos resíduos e diminuíram apenas a partir dos 330 dias de decomposição. A decomposição relativamente lenta dos resíduos vegetais de cana-de-açúcar pode ser atribuída aos valores bastante elevados de C/N e lignina/N nesses resíduos, onde houve forte correlação entre quantidade de resíduos remanescentes, e o decaimento de celulose e C:N

Development of weCope, a mobile app for illness self-management in schizophrenia

Objective: To describe the development of weCope, a Portuguese mobile app for people with schizophrenia. Methods: The development of weCope followed 4 stages: I-102 people with psychotic disorders completed an online questionnaire; II-a multidisciplinary focus group was conducted among five mental health professionals; III-we developed the app; IV-9 participants used weCope during 8 weeks to assess its efficiency. Results: weCope targets coping with voices, problem solving, goals setting and stress management, and results indicated that: weCope improved symptoms, sense of recovery and personal and social functioning; 59% of the participants were willing to download an application for illness self-management; professionals revealed some concerns about mHealth but enhanced the high importance to develop these apps; usability testing revealed that 89% considered weCope useful for illness self-management. However, the more years with mental illness, the less importance is given to a mobile application for this purpose. Discussion: weCope was developed through a comprehensive development process and may contribute to a subjective perception of the patient’s better well-being and health condition