bluuebunny/crossref_metadata_2025 huggingface dataset:
“Fake” or “Real” Marriage? Gender, Age, “Race” and Class in the Construction of Un/desirability of Marriage Migrants in South Korea
Authors: Lee-An Jiyoung
Published: March 2020

This paper examines the link between the regulation of marriage migration and national boundary-making processes in South Korea through the analysis of “fraudulent marriage” discourses. Corresponding to the goals of the Korean government based on the gendered and racialized construction of the Korean nation, populations of marriage migrants are hierarchized according to various intersecting axes of gender, age, class, and “race.” Based on a critical race and intersectional feminist framework and critical security studies, I examine multiple intersections of the social relations, which hierarchize marriage migrants. While certain marriage migrants are constructed as desirable because they embody particular sets of characteristics (namely childbearing female marriage migrants from developing countries), other marriage migrants outside these parameters are actively constructed as undesirable and suspected of fraudulent marriage. The discriminatory distinctions drawn among differentially racialized and gendered marriage migrants raise significant social justice concerns. The article concludes with a brief discussion of strategies pursued by marriage migrants and their Korean spouses to undermine discourses of fraudulent marriages.
Negotiated Precarity in the Global South: A Case Study of Migration and Domestic Work in South Africa
Authors: Jinnah Zaheera
Published: March 2020

This article explores precarity as a conceptual framework to understand the intersection of migration and low-waged work in the global south. Using a case study of cross-border migrant domestic workers in South Africa, I discuss current debates on framing and understanding precarity, especially in the global south, and test its use as a conceptual framework to understand the everyday lived experiences and strategies of a group that face multiple forms of exclusion and vulnerability. I argue that a form of negotiated precarity, defined as transactions which provide opportunities for survival but also render people vulnerable, can be a useful way to make sense of questions around (il)legality and (in)formality in the context of poorly protected work, insecure citizenship and social exclusion. Precarity as a negotiated strategy shows the ways in which people interact with systems and institutions and foregrounds their agency. But it also illustrates that the negative outcomes inherent in more traditional notions of precarity, expressed in physical and economic vulnerability, and discrimination in employment relations, mostly hurt the poor. This suggests the importance of an intersectional approach to understanding precarity in labour migration studies.
Punishing Survivors and Criminalizing Survivorship: A Feminist Intersectional Approach to Migrant Justice in the Crimmigration System
Authors: Abji Salina
Published: March 2020

Scholars have identified crimmigration – or the criminalization of “irregular” migration in law – as a key issue affecting migrant access to justice in contemporary immigrant-receiving societies. Yet the gendered and racialized implications of crimmigration for diverse migrant populations remains underdeveloped in this literature. This study advances a feminist intersectional approach to crimmigration and migrant justice in Canada. I add to recent research showing how punitive immigration controls disproportionately affect racialized men from the global south, constituting what Golash-Boza and Hondagneu-Sotelo have called a “gendered racial removal program” (2013). In my study, I shift analytical attention to consider the effects of the contemporary crimmigration system on migrant women survivors of gender-based violence. While such cases constitute a small sub-group within a larger population of migrants in detention, nevertheless scholarly attention to this group can expose the multiple axes along which state power is enacted – an analytical strategy that foundational scholars like Crenshaw (1991) used to theorize “structural intersectionality” in the US. In focusing on crimmigration in the Canadian context, I draw attention to the growing nexus between migration, security, and gender-based violence that has emerged alongside other processes of crimmigration. I then provide a case analysis of the 2013 death while in custody of Lucía Dominga Vega Jiménez, an “undocumented” migrant woman from Mexico. My analysis illustrates how migrant women’s strategies to survive gender-based violence are re-cast as grounds for their detention and removal, constituting what I argue is a criminalization of survivorship.The research overall demonstrates the centrality of gendered and racialized structural violence in crimmigration processes by challenging more universalist approaches to migrant justice.
A Creative Storytelling Project with Women Migrants in Johannesburg, South Africa (Dispatch)
Authors: Walker Rebecca , Oliveira Elsa
Published: March 2020

N/A
Performing Nanay in Winnipeg: Filipino Labour Migration to Canada (Creative Intervention)
Authors: Pratt Geraldine , Zell Sarah , Johnston Caleb , Venzon Hazel
Published: March 2020

N/A
Caution (Creative Intervention)
Authors: Mestizo Arts & Activism Collective
Published: March 2020

N/A
Migration, Intersectionality and Social Justice (Guest Editors’ Introduction)
Authors: Stasiulis Daiva , Jinnah Zaheera , Rutherford Blair
Published: March 2020

N/A
The Effectiveness of Blended Learning in Improving Media Literacy on Different Self-Regulated Learning
Authors: Rais Muhammad , Fadillah Ratnawati , Rivai Andi Alamsyah
Published: March 2020

The purpose of this study was to examine the effectiveness of learning strategies of blended and self-regulated learning and the effect of the interaction between them on media literacy skills. This study used a quasi-experimental design with a 2x2 factorial design. The research subjects consisted of 85 people (41 in control groups and 44 in experimental groups). Data were analyzed using two-way ANOVA. The results showed that (1) there were differences in media literacy abilities between groups of students who were taught using blended learning strategies and groups of students who were taught using face to face learning strategies (F = 26,034; p = 0,000), (2) there were differences in media literacy abilities between groups of students who have high self-regulated learning and low self-regulated learning, (F = 7,446; p = 0.008), and (3) there was no interaction between learning methods and self-regulated learning (high and low) on literacy skills Student media (F = 0.238; p = 0.627). Descriptive statistical results indicated that the use of blended learning strategies has a better effect with an average score of 37.66 compared to face-to-face learning strategies that have a relatively smaller average score of 34.02.
The Implementation of Inquiry-Based Learning to Improve the Learning Result of Football
Authors: Saharullah Saharullah , Idrus Nur Abidah , Muhammadong Muhammadong , Arisandy Reski
Published: March 2020

The study aimed at improving studentsâ€™ learning outcomes about football through the inquiry learning model at Vocational High School 2 Makassar. Data were collected using PJOK learning result test and observation. The results of recapitulation between cycles after implementing inquiry learning model indicate that football learning outcomes of students in grade X TKJ 1 at Vocational High School 2 Makassar improved, proven by the result in cycle I that 6 (17.1%) out of 35 students were in Moderate scale and only 1 student (2.9%) was in Poor scale. In cycle II, the learning outcomes improve as there were 10 students (28.6%) in Moderate scale. Classically, cycle I is stated as unsuccessful because only 74.29% of students were in the complete category and has not achieved successful indicators which had been determined. In cycle II, there was an improvement of completeness which was stated as successful because 91.43% of students were in the complete category and has not achieved successful indicator which had been determined, which was 80%. The inquiry learning model applied in teaching football can improve learning outcomes based on the achievement of learning results completeness classically and individually.
The Influence Of Achievement Motivation, Teaching And Learning Style Towards Textile Learning Outcomes
Authors: Triastuti Endang , Sudira Putu
Published: March 2020

This study aims at revealing the influence of: (1) teaching style towards textile learning outcomes, (2) learning styles towards textile learning outcomes, (3) the effect of from teaching style, learning style, and achievement motivation towards textile learning outcomes, (4) the significance of teaching style, learning style and, achievement motivation towards textile learning outcomes for individual or group. This research can be categorized as quantitative study with a correlational model. The data analysis used multiple regression analysis techniques. The results of the study showed that (1) there is a positive and significant influence of teaching style towards textile learning outcomes, (2) there is a positive and significant influence of learning styles towards textile learning outcomes, (3) there is a positive and significant influence from teaching style, learning style, and achievement motivation towards Textile learning outcomes, (4) the influence of teaching style, learning style and achievement motivation were 26.6% and the rest was coming from other factors.
The Use of Circle Games to improve the Mastery of English Vocabulary of the Indonesian Maritime Academy Students
Authors: Aeni Nur , Fitriani Fitriani , Fitri Nur
Published: March 2020

The research's aim was to find out if the use of circle games substantially enhances the vocabulary competence of the learners and to find out whether or not the learners are interested in using circle games. The study used a quasi-experimental technique. The study population was AMI AIPI Makassar's first year students in the academic year 2018/2019. The sample consisted of 50 students in Technical Class A and B. The research used cluster random sampling. In AMI AIPI Makassar, the investigator took two classes of the first year Technical Class students. The classes were split into the experimental class and class control. The results showed an important distinction between the score of the learners taught using circle games and without Circle Games. It was demonstrated by the experimental class ' mean score, which in the posttest was greater than the control class. The test outcome showed that the use of Circle Games substantially increased the mastery of the students. Analysis using the Likert Scale showed that learners wanted to learn English through Circle Games.
Industrial Technology Graduatesâ€™ Acquired Skills and Competencies from the University
Authors: Gequinto Amado C , Mads Do
Published: March 2020

Skills and competencies are highly regarded in todays global market. Different agencies specifically those seeking forÂ  technologists, technicians, and engineers, have stressed out that skills and competencies as major componentsÂ  for individual workers.Â  This aimed to determineÂ  the relevance and appropriateness of acquired skills and competencies by industrial technology graduates, and determine the extent of use of skills and competencies in the current employment. Review of related literatures and studies have been considered in the realization, understanding, analysis, and interpretation of this research exploration. A descriptive method of research was used with 78 graduates from 2015-2016 and 117 graduates from 2016-2017, who participated in the study survey process. The BatStateU Standardized Questionnaire was used to gather data. A brief interview and talk during the visit of alumni in the university was also considered, as well as the other means of social media like email, facebook, messenger, and text messaging. Â Â Results show that skills and competecnices acquired by industrial technology graduates are all relevant and appropriate.Â  The study also found that there is some to great extent use of acquired skills and competencies to their current employment. The study implies that the acquired skills and competencies from the university significantly provided the graduates the opportunities ins the national and global markets and industries.
Methodological foundations of economic assessment of yield of agricultural crops
Authors: Parmacli D. M.
Published: March 2020

The methodology for assessing levels of land productivity in terms of cost recovery is presented in theoretical and practical aspects. Based on the method for grading the yield of agricultural crops, methodological approaches have been proposed to substantiate the indicators of four productivity levels, which form four zones: unproﬁtable, moderate, rational and optimal yield. At the breakeven point, whereby revenue from sales and total production and sales costs are equal, the company does not incur losses, but does not receive proﬁt either. After overcoming the breakeven point, the enterprise begins to make a proﬁt with each subsequent unit of production. In the zone of moderate productivity, the company makes a proﬁt which allows simple reproduction. In the zone of rational productivity of land, the proﬁt of the enterprise provides for a partial upgrade of production, necessary in conditions of expanded reproduction. To conduct an extensive upgrade of the production base in conditions of expanded reproduction, the enterprise should reach the optimal level of yield. Formulas are given by which enterprises can forecast their proﬁt per unit of area as a multiple of ﬁxed costs. A number of examples for calculating different levels of crop yield based on a case study of a particular enterprise in 2018 are presented. The suggested method will allow researchers to substantiate economic evaluation of yield levels achieved for each type of crop cultivated at any given agricultural enterprise. This methodology will also provide specialists of agricultural enterprises, teachers and students of higher educational institutions with modern methodological tools for the economic assessment of yield levels for cultivated crops.
Content of valuable substances in barley grain grown under contrast climate conditions
Authors: Sumina A. V. , Polonskiy V. I.
Published: March 2020

The inﬂuence of abiotic factors and genotype on the quality of barley yield was studied. The research was conducted in various agroclimatic conditions at two state variety-testing sites in 2019. The ﬁrst is located in the steppe zone of foothills on the ordinary and southern chernozems of the Republic of Khakassia, the second – in the forest-steppe soilclimate zone of the Republic of Tuva. During the experiment, a more contrasting difference in the daily temperature range in the conditions of Tuva was noted. The following varieties of spring chaffy barley of Siberian breeding were used as an object of the study: Uvatsky, Krasnoyarsky 91, Emelya (multi-rowed), Acha, Biom, Tanay, Buyan, Takmak, Abalak, Olenek (two-rowed). Production characteristics of the varieties (weight of 1000 grains, yield), the content of protein, sugars, fat and ﬁber in grain were determined by using standard methods. More stringent conditions for growing plants in the Republic of Tuva, compared to the Republic of Khakassia, caused a 20% decrease in the weight of 1000 grains and yield, a 47% decrease in protein content in grain, and an increase in the accumulation of fat and ﬁber in it (by 24 and 48%, respectively). When growing barley in Tuva, less signiﬁcant intervarietal differences were noted in the production characteristics of the crop and in the content of valuable substances in the grain (except for protein). Varieties of barley with a high content of valuable substances in grain for cultivation in the Republic of Tuva in contrasting climatic conditions were determined. Variety Krasnoyarsky 91 was recommended (there was no decrease in the mass of 1000 grains and the level of productivity) and Biome (the smallest decrease in protein content, the largest increase in the content of fat and sugars in grain).
Inﬂuence of housing methods of young bulls of Hereford breed on their meat productivity and survival rate
Authors: Fakhrutdinova R. Sh. , Afonina I. A. , Soshnikova T. A.
Published: March 2020

The indicators of productivity, survival rate and behavior of young bulls of Hereford breed were studied in a comparative aspect when they were raised in winter in the northern part of Kolpashevsky district of the Tomsk region. During the housing period, low average air temperatures were observed: from 20°С in October to –50°С in December – January and –49°С in February. Bulls of the control group were kept in a unit of the "three-wall" type during wintering, while bulls of the experimental group – in a lightweight unit. The increase in live weight of bulls of experimental group was 2.2 times higher than that in the control group, the slaughter weight was by 68.3 kg and the weight of internal fat was by 6.0 kg more than in the control. In the experimental group, the survival rate of bulls before slaughtering was 2 times higher than that in the control. In terms of live weight, experimental animals from the age of 15 months to slaughter exceeded the control group by 19%. Ethological studies showed that different types of housing units had a signiﬁcant impact on animal behavior. The feed intake of the bulls of the control group was shorter by 54 minutes, (15%) than that of the experimental group. Animals also spent 95 minutes (20.21%) less on chewing cud compared to the experimental bulls. When kept in a lightweight type of unit, bulls were in motion for a longer time, as a result of which they rested 45 minutes less, which contributed to the increase in the metabolic processes in the body. The animals of the experimental group spent 50 minutes longer on eating food in comparison with the bulls in the “three-wall” unit. The air temperature in a unit of the "three-wall" type was close to the ambient air temperature, wherein the bulls spent most of their time lying down. The proﬁtability of growing bulls in the experimental group exceeded the control indicator by 1.6 times. In the light-type premises, the housing conditions of bulls in the winter period at extremely low air temperatures were most favorable.
Evaluating the Use of Renewable Energy and Communal Governance Systems for Climate Change Adaptation
Authors: Ley Debora , Corsair H J , Fuss Sabine , Singh Chandni
Published: March 2020

Aim: Renewable energy (RE) systems can be effective tools for rural communities for meeting goals for development and climate change mitigation and adaptation. RE systems provide small amounts of electricity fostering community development through improved energy access, livelihood opportunities, and improved quality of life. Communities in rural Guatemala are increasingly vulnerable to climate change impacts, due to increasingly extreme weather events. Distributed RE systems can be more effective than connection to national electric grids in providing power if community members have the agency and skill (technical and in governance) to maintain them. The goal was to evaluate the performance of RE systems used in a rural Guatemalan community and the governance system created around it.Design/Research methods: The specific RE systems were evaluated eight years ago; they had performed well especially after Hurricane Stan. Recommendations were made for further performance improvement. This study evaluates the subsequent performance given more intense rains, and the current state of related community governance on the basis of semi-structured interviews.Conclusions/findings: This research highlights the need for enhanced and continuous monitoring and evaluation methods for both energy projects and their supporting institutional structures. Accountability, mediation mechanisms and transparency tools within these institutions can allow more open communication and equitable treatment with agents of power.Originality/value of the article: The article provides original insights for project implementation and policy information. Strong trust bonds are necessary for community resilience in emergencies, and in the well-being and development of the community, independent of energy sources.
ANÁLISE DA PERFORMANCE AMBIENTAL DE UM ASSENTAMENTO RURAL NO SEMIÁRIDO NORDESTINO
Authors: Silva Maykon T. da , Soares Ilton A. , Rosário Elainy C. do , Lopes Débora N. , Duarte Cynthia R. , Souto Michael V. S.
Published: March 2020

As atividades agrícolas estão diretamente relacionadas ao desenvolvimento sustentável, por serem desenvolvidas em contato com o meio ambiente, onde podem ocasionar fortes impactos nele. Nesse sentido, deve-se buscar uma relação harmoniosa entre as atividades produtivas e a conservação do meio ambiente, para garantir ao produtor rural a rentabilidade de seus investimentos e sustentabilidade ambiental das atividades produtivas. Nesse contexto, está inserida a área de estudo no município de Baraúnas/RN no semiárido potiguar. Assim, o objetivo geral deste trabalho foi estimar o índice de (sustentabilidade) performance ambiental do Assentamento Associação Familiar da Agricultura da Primavera, Baraúnas/RN, através da metodologia desenvolvida pelo Banco do Nordeste do Brasil. Para alcançar esse objetivo foram aplicados questionários com os produtores dessa comunidade. Os produtores fazem uso de algumas medidas benéficas ao meio ambiente (uso de adubos orgânicos; uso de equipamentos de proteção quando é aplicado os agrotóxicos; medidas de proteção dos solos, entre outros), contudo, práticas existentes como a utilização de água salobra na irrigação, a queima indiscriminada de resíduos sólidos e a não utilização de energias alternativas acabam diminuindo o desempenho ambiental. O desempenho ambiental do assentamento foi classificado como médio, há a necessidade de assistência técnica aos produtores para que sejam eliminadas as práticas danosas ao meio ambiente e, por conseguinte, aumente o desempenho ambiental.
Análise quantitativa e qualitativa da técnica de fusão IHS aplicada a imagens do satélite Landsat8
Authors: Azevedo Laízy de S. , Candeias Ana Lúcia B.
Published: March 2020

A fusão de imagens pode ser definida como um modelo que combina imagens de diferentes características e espaciais para sintetizar uma nova imagem com melhor resolução espacial que uma imagem multiespectral original. Este trabalho apresenta os resultados da análise quantitativa e qualitativa das imagens fusionadas à técnica IHS (intensidade, maturação e saturação), sendo uma área de estudo do reservatório de Itaparica, Pernambuco. A Técnica foi Aplicada EM Imagens do Landsat8 ( Terra remoto por satélite Sensing), in the bandas 2,3,4,5 and 6 do sensor OLI foram utilizadas nas diferentes combinações de RGB e fusionadas por IHS com a pancromática de captação de imagens com melhor resolução espacial. A resolução espacial do Landsat é de 8 metros para uma imagem multiespectral e 15 metros para a imagem pancromática. Após o processamento, foram apontados como indicadores e medidas de segurança como: média, variância, correlação e IQI (relação de qualidade da imagem). O que é mais difícil de obter na qualidade das imagens, ou seja, um maior nível de posteriores ao aumento da resolução espacial. A análise de análise foi realizada com o melhor resultado para as bandas 2,3 e 4
Persistent Scatterer Interferometry analysis of multi-temporal Sentinel-1 radar imagery to detect ground subsidence in the city of Tirana, Albania
Authors: Bedini Enton
Published: March 2020

Persistent Scatterer Interferometry (PSI) analysis of Sentinel-1 C-band radar spaceborne imagery was carried out to detect ground subsidence zones in the city of Tirana, Albania. Fifty-eight Sentinel-1A Interferometric Wide (IW) images of the time period January 2017 – December 2018, with a temporal resolution of 12 days, were used as input to the PSI. The PSI technique can detect millimeter-scale ground motion. The results show a zone of ground subsidence of about 7 mm/year along a segment of the Tirana Outer Ring road, where numerous tall buildings have been constructed in the last twenty years. In the northern part of the Kamza municipality a ground subsidence of about 2-3 mm/year is observed. In the western part of the Kamza municipality, it is also observed a ground subsidence of about 7 mm/year. In general, the areas where ground subsidence was detected from the PSI analysis, are characterized by urban expansion in the last thirty years. The ground subsidence could be a result of the lowering of the water table from the construction works or from over exploitation of groundwater resources. The study represents the first reported analysis of the Sentinel-1 imagery for ground motion detection in the city of Tirana. Further monitoring and detailed studies on the causes of the ground subsidence in this important urban area are necessary.
Balanço de energia via sensoriamento remoto em fragmentos de Caatinga no Sul do Piauí
Authors: Fernandes Gabriel Siqueira Tavares , Lopes Pabrício Marcos Oliveira , De Oliveira Vynicius Barbosa , Silva Douglas Alberto de Oliveira
Published: March 2020

O entendimento da complexidade da dinâmica de trocas de calor entre a vegetação e a atmosfera é crucial para estudos meteorológicos, tendo em vista que a alteração nos fluxos de superfície pode ocasionar uma modificação climática. Dessa forma, objetivou-se caracterizar e quantificar os componentes do balanço de energia, bem como, verificar se a heterogeneidade da Caatinga possui influência no mesmo, a partir das frações distintas, no município de Bom Jesus, Piauí. O município integra a região do Semiárido Piauiense, possuindo clima quente e úmido (Awa), as parcelas da vegetação são caracterizadas como Caatinga Arbórea (CAbo), Caatinga Arbustiva (CAbu) e Caatinga Arbóreo-Arbustiva (CAb). As imagens utilizadas são provenientes dos sensores OLI (Operational Land Imager) e TIRS (Thermal Infrared Sensor) os quais estão a bordo do Landsat 8. O processamento das imagens que consistiu na conversão dos dados de números digitais para radiância espectral; obtenção da refletância, dos índices de vegetação e dos componentes do balanço de radiação, de energia, foi realizado a partir do algoritmo SEBAL. A fim de verificar a relação existente entre as frações da vegetação (NDVI) e os componentes biofísicos obtidos do SEBAL, realizou-se análise de regressão entre as variáveis. Entre as áreas avaliadas, encontrou-se diferença na distribuição da energia disponível à superfície (Rn) para cada componente biofísico do balanço de energia, bem como, em características da vegetação (albedo e NDVI). Quanto a relação existente entre a vegetação peculiar de cada fragmento e os componentes do balanço de energia, se obtiveram relações distintas de acordo com cada fração, com relações diretamente proporcionais para o Rn, LE e inversamente para H e G. A Caatinga, com a alta diversidade de sua flora, apresenta processos biofísicos complexos na sua relação com a atmosfera, no que diz respeito às trocas de energia.
Técnicas de processamento de imagem como subsidio para o monitoramento do volume de água em reservatórios: estudo de caso Ibimirim-PE, Brasil
Authors: Nascimento Evely Ferreira , Azevedo Laizy Santana , Candeias Ana Lucia Bezerra
Published: March 2020

A constante dinâmica do volume de água em Reservatórios implica na necessidade de um monitoramento contínuo. O sensoriamento remoto em conjunto com o geoprocessamento e processamento de imagens digitais constituem-se como ferramentas importantes no fornecimento de informações que facilitam o gerenciamento e a tomada de decisão na gestão dos recursos hídricos. O presente trabalho apresenta uma metodologia aplicada em imagens do satélite Landsat 8, para verificar a contribuição de algumas técnicas de processamento de imagem, como fusão e índice de água por diferença normalizada (NDWI), na estimativa do volume de água em reservatórios. O estudo foi realizado no Reservatório Engenheiro Francisco Saboia no município de Ibimirim-PE, Brasil. Os resultados foram validados com base em dados disponibilizados pela Agência Pernambucana de Águas e Clima (APAC) e Agência Nacional de águas (ANA). A metodologia mostrou-se eficiente no monitoramento do volume de águas em reservatório, tendo a fusão de imagens e o NDWI uma contribuição positiva na melhora da precisão dos resultados.
Evapotranspiração de canaviais em diferentes fases fenológicas por sensoriamento remoto no vale do submédio do São Francisco.
Authors: Martins Caick Marcelo Rosa , Lopes Pabrício Marcos Oliveira , Silva Ênio Farias de França e , Moura Geber Barbosa de Albuquerque , Nóbrega Ranyére Silva , Silva Jhon Lennon Bezerra da
Published: March 2020

The study aimed to estimate the reference evapotranspiration of sugarcane using the Priestley-Taylor method, comparing with the standard Penman-Monteith-FAO 56 method in the region of the São Francisco Submiddle Valley in the period from 2013 to 2016. Images of the Landsat-8 satellite of the OLI and TIRS sensors acquired from the North American space Agency (NASA) and meteorological data from the Instituto Nacional de Pesquisas Espaciais (INPE) were used, along with the Sistema de Organização Nacional de Dados Ambientais (SONDA) and the Instituto Nacional de Pesquisas Espaciais (INMET). The instantaneous radiation balance, soil heat flow, latent heat flow, crop coefficient (Kc) and Priestley-Taylor coefficient were estimated to obtain the reference evapotranspiration, which ranged from 0.00 to 3.65 mm d-1. The validation proceeded through the correlation between method of crop coefficient applied for Priestley-Taylor and Penman-Monteith. The value of R² 0.75, Pearson coefficient (R) 0.88 (strong correlation) and the mean error found in 1.81 mm d-1   were considered satisfactory. The Priestley-Taylor method was able to estimate the reference evapotranspiration in sugarcane production areas in the region of the São Francisco Submiddle Valley in a satisfactory way.
Análise fatorial aplicada à variabilidade do vento no estado da Paraíba
Authors: De Sousa Welinagila Grangeiro , Silva Madson Tavares , De Lima Santana Livia , De Siqueira Mariana da Silva , Silva Melo Maria Monalisa Mayara , De Andrade Antônia Silânia
Published: March 2020

O vento é uma variável meteorológica de suma importância em diversas aplicações. Contudo, se faz necessário uma compreensão detalhada do seu comportamento tanto temporal quanto espacial, a fim de entender os fatores que possam interferir em sua variabilidade. A metodologia utilizada no presente estudo baseou-se na aplicação da técnica estatística multivariada a partir da análise fatorial (AF) com o objetivo de analisar a variabilidade da velocidade do vento nas microrregiões do Estado da Paraíba. Os dados utilizados para constituir o estudo foram de reanálises provenientes do CFSR validados com dados observados de seis estações do INMET compreendendo o período de janeiro 2000 a dezembro de 2010. De acordo com estudo, constatou-se que os menores valores de velocidade do vento sobre a Paraíba decorrem no primeiro semestre e os maiores valores foram obtidos no segundo semestre. Mediante Análise Fatorial (AF), identificou-se maiores pesos na variação total explicada por dois fatores (mínima e máxima), representando cerca de 100% da variância total dos dados, onde o primeiro fator correlaciona-se com período de menor variabilidade de vento para a região, já o segundo com o intervalo de maior variabilidade de velocidade do vento.
Spacialization of the Degradation Risk in the Natural Monument of the São Francisco River
Authors: Silva Douglas Alberto de Oliveira , Montenegro Suzana Maria Gico Lima , Lopes Pabrício Marcos Oliveira , Fernandes Gabriel Siqueira Tavares , Silva Ênio Farias de França e , Dos Santos Anderson , Santos Cicero Gomes dos
Published: March 2020

Understanding changes related to environmental degradation by parameters such as Normalized Difference Vegetation Index (NDVI), Surface Albedo (α) and Moving Standard Deviation Index (MDSI) has been of great relevance in the study of environmental impacts. The objective of the present study was to analyze the evolution of soil degradation and also of the soil use and occupation in the San Francisco River Natural Monument, using surface data and images from Landsat-5 and Landsat-8, for the 1987, 1997, 2007 and 2017 years. Remote sensing techniques were used to estimate indices such as NDVI, albedo (α) and MDSI. The change detection technique and decision tree classification based on predefined rules in NDVI, albedo and MDSI were applied to infer degradation, soil use and occupation. There was a significant increase in degradation, especially for areas with high degradation. Vegetation indices showed the lowest values for areas of low vegetation and exposed soil, being the highest values found for Caatinga dense vegetation. It was concluded that the change detection technique and decision tree classification were efficient in identifying the degradation during the study period. The change detection technique algorithm was more sensitive to water bodies than the change intensity technique.
Characterization of the Soil Temperature Using Wavelets in two Forest Biomes: Amazonas and Atlantic Florets
Authors: Carneiro Rayonil Gomes , Moura Marcos Antonio Lima , Da Silva Vicente de Paulo Rodrigues , Borges Camilla Kassar , Fisch Gilberto
Published: March 2020

This study aimed to evaluate and compare the seasonal and spatial profiles of soil temperature (ST) in the biomes of the Amazon Forest and Atlantic Forest, using the wavelet transform. In the Amazon rainforest were used the data from the year 2009. In the Atlantic Forest used up to year 2010 data. The results showed that the ST in the Amazon rainforest shows little variation in time with temperature range below 5 ° C. In the rainforest, this exhibited high thermal amplitude throughout the year, more than 10 ° C. The wavelet transform showed that the variability of ST is defined by multi-scale time: 24 hours for both biomass, 8 to 16 days for Amazon and 4 to 16 days to Atlantic forest.
CARACTERIZAÇÃO RADIOMÉTRICA E VARIABILIDADE ESPAÇO TEMPORAL DO ALGODOEIRO EM AGROECOSSISTEMA DE MATO GROSSO.
Authors: Soares Jefferson Francisco , Alves Marcelo de Carvalho
Published: March 2020

A cultura do algodoeiro possui variações fenológicas importantes que influenciam no comportamento espectral e que podem auxiliar no dinâmico processo de manejo. O objetivo deste trabalho foi avaliar as aplicações das bandas multiespectrais do sensor Landsat-5TM, e a caracterização espectrotemporal da fenologia da cultura do algodoeiro sobre o cultivar 966 Bayer Fiber Max®. Foram calculados os índices de vegetação (IV) para auxiliar na descriminação da fenologia do algodoeiro. O monitoramento temporal revelou que o melhor IV para caracterização temporal foi EVI (0,939-maio/09-0,704 agosto/09) que apresentou resultados condizentes com as fases fenológicas da cultura.  As transformações Tasseled Cap (Wetness, Greenness e Brightness) foram associados a parâmetros físicos da área de estudo e correlacionadas  estatisticamente com os dados dos IV propostos, os índices NDWI, NDVI e SAVI com maiores valores de correlações com os componentes Wetness (r=0,869;p<0,05), Greenness (r=0,878;p<0,05), Brightness (r=0,761;p<0,05), respectivamente. Pela banda termal (B6) foi estimado a temperatura de superfície, validada por dados de laboratórios virtuais e pela estação meteorológica do INMET. Assim, foi possível identificar e relacionar as alterações na reflectância espectral do algodoeiro no espaço e no tempo, possibilitando interpretar os estágios vegetativos da cultura remotamente.
Agricultural productivity of cassava under the rainfall of Pajeú river basin
Authors: Diaz Caio Cesar , Miranda Rodrigo de Q. , Nóbrega Ranyére S.
Published: March 2020

The crop, joined with livestock, are the most important activities in semiarid of Pernambuco and the rural activities developed in semiarid, in majority, are made by dry crops, so this kind of activity is highly dependent of rainfall that occur in the region. The main aim of this research was assess cassava productivity in function of rainfall in Pajeu river basin. Were used to this research, statistical methods applied to fill gaps of rainfall data and to model yearly cassava agricultural productivity. In general, at least 4 of 7 stations obtained good statistical relationship between the variables recording r between 0.505 and 0.723. Cassava productivity has better relationship with rainfall in center of basin between january and march and north center of basin between april and june. Figured out spatial variabilities in the rainfall influence over cassava productivity. The rainfall and productivity presented patterns with different levels of definitions over time and figured out that the potential of predictability of the agricultural productivity using rainfall to the adopted standards in the researches was satisfied, however, with some errors that can be relevant to the quality of the forecasting until 13 years.
Avaliação de Latossolo pelo método de Proctor
Authors: Moura Thamires Carolayne Cavalcanti , Caetano Victor Rafael Dantas , Notaro Krystal de Alcantara
Published: March 2020

Na resolução de muitos problemas de engenharia é necessário melhorar as características do solo, de maneira a assegurar que seja capaz de suportar as cargas aplicadas sem deformação excessiva, mantendo a sua resistência e estabilidade, dessa forma é fundamental gerar informações técnicas para auxiliar os engenheiros na tomada de decisão. Realizado através do ensaio de Proctor, este trabalho tem como objetivo a determinação da relação entre o teor de umidade e a massa especifica aparente seca do latossolo, mediante estudo bibliográfico e ensaio laboratorial.  Os procedimentos laboratoriais foram realizados obedecendo as normativas NBR-7182, que especifica o Ensaio de compactação, e a NBR-6457, que determina o método para preparação de amostras de solos. Esses permitem a obtenção do valor do peso específico seco, que com o aumento do teor de umidade atinge um valor máximo correspondente à umidade ótima, esta é localizada na ordenada máxima da curva de compactação. Sendo assim, para o ensaio realizado com o Latossolo Amarelo, foi verificado a massa especifica aparente seca máxima correspondendo a 3,02 g/cm³ e umidade ótima corresponde a 11,20%.Palavras-chave: Ensaio de Proctor, Latossolo Amarelo, Compactação.
Análise de séries pluviométricas no estado do Acre por meio de testes não-paramétricos
Authors: Dias Ana Gabriela Santos , Moura Arieli Fernandes de , Pessoa Francisco Carlos Lira , Crispim Diêgo Lima , Ferreira Filho David Figueiredo
Published: March 2020

Atualmente há uma necessidade de entender como as alterações no clima modificam os regimes pluviométricos, o ponto de partida deste entendimento é observar a homogeneidade e a tendência de séries de chuvas. A interferência humana no meio ambiente como desmatamento e construção civil intensificam as consequências de eventos extremos de pluviometria como enchentes e inundações, trazendo graves problemas para a região atingida. Os testes estatísticos tornam-se ferramentas importantes para compreender o comportamento pluviométrico e definir estratégias eficazes na gestão hídrica para proteção do meio ambiente e desenvolvimento econômico de uma região. O objetivo deste estudo foi analisar, através de testes não-paramétricos, o comportamento da precipitação de 4 municípios do sudoeste do Acre, em períodos de 20 anos (1984-2003) e 10 anos (1984-1993 e 1994-2003). Foi feita a estatística descritiva dos dados onde mostrou que as estações têm comportamentos similares, divergindo em alguns pontos. Os testes de Mann-Kendall e Spearman apontaram que na maioria das estações pluviométricas não houve tendência significativa de chuva, tendo em algumas estações a tendência negativa e em menor quantidade, tendências positivas. O teste de Sen apontou uma pequena diminuição da lâmina d´água na maior parte das estações estudadas. Uma das hipóteses para as tendências negativas seria o desmatamento acentuado na região das estações estudadas, além da influência dos fenômenos El Niño e La Niña, ocorridos no período em que foram feitos os testes.
Índices Espectrais por Sensoriamento Remoto com os Satélites LANDSAT-5 e SENTINEL-2 no entorno do reservatório Poço da Cruz - PE
Authors: Lima Nicelle A. da S. , Oliveira Leidjane M. M. de , Xavier Maria Luiza P. , Silva Junior Ubiratan J. da , Nascimento Evely F. do
Published: March 2020

O Sensoriamento Remoto permite analisar imagens da superfície terrestre, de forma que seja possível a realização de estudos e obtenção de informações sobre determinadas áreas, facilitanto desta forma a interface entre o pesquisador, a área de estudo e o equipamento. Percebe-se que ao longo do tempo a ação antrópica tem sido um dos intervenientes em gerar modificações na superfície terrestre. Não sendo diferente para o Sertão de Moxotó, este estudo visou realizar uma comparação entre variáveis biofísicas do reservatório Poço da Cruz, para análise do comportamento do vigor vegetativo da mata ciliar, utilizando satélites de resoluções espaciais diferentes, Landsat-5 TM com 30 m e do Sentinel-2 com 10 m. Portanto, tomou-se como base a imagem coletada em 23 de setembro de 2008, referente ao Landsat-5 e a imagem do dia 07 de março de 2018 para o Sentinel-2, de forma que informações sobre três índices espectrais foram obtidas, Índice de Água por Diferença Normalizada (NDWI), Índice de Vegetação por Diferença Normatizada (NDVI) e o Índice de Vegetação Melhorado (EVI). Após análises do NDWI, NDVI e EVI, verificou-se que apesar das diferenças espectrais e espaciais dos produtos gerados utilizando os sensores ópticos TM Landsat-5 e MSI Sentinel-2, os mesmos apresentaram valores estatísticos e Índices Espectrais muito próximos, detectando com eficiência e delimitação do Reservatório Poço da Cruz-PE.
Detection of changes of the soil use and vegetation in the low San Francisco
Authors: Silva Douglas Alberto de Oliveira , Lins Frederico abraão Costa , Silva Jhon Lennon Bezerra da , Silva Landson Carlos da , Moura Geber Barbosa de Albuquerque , Lopes Pabrício Marcos Oliveira
Published: March 2020

The quantification and spatialization of environmental degradation is an essential element in the planning of agricultural activities and in the management of the water and natural resources in the semiarid. Thus, the detection of changing land use conditions is necessary for understand with more accurately the dynamics of the different types of soil coverage. Remote sensing techniques make it possible to evaluate this type of environmental monitoring in a practical and efficient manner, and low operating cost in a short time. The objective of this study was to monitor and evaluate the environmental changes caused about the Caatinga vegetation coverage by remote sensing using satellite images in the municipality of Petrolina, semiarid region of Pernambuco state. The study was developed using two Landsat-8 satellite images, processed using SEBAL algorithm steps, in the development of thematic maps of the surface biophysical parameters. The maps expressed the spatial distribution of the albedo parameters and surface temperature, and of the NDVI and SAVI vegetation indices, which served for highlight the dynamics of environmental changes in the Caatinga natural environment of semiarid region. The results showed increased of the albedo and surface temperature when there was a decrease in vegetation indices. This behavior was mainly favored by the region's dry season, which coincides with the satellite's days of passage. The biophysical parameters are effective in the spatial monitoring of semiarid regions, highlighting the spatial variability of the soil uses, identifying possibly degraded areas. Remote sensing environmental monitoring is a viable alternative for mitigate environmental changes caused by anthropogenic actions and drought events.
Downscale of future climate change scenarios applied to Recife-PE
Authors: Costa Rafaela Lisboa , Gomes Heliofábio Barros , Dos Santos Silva Fabrício Daniel , Da Rocha Júnior Rodrigo Lins
Published: March 2020

The objective of this work was to analyze and compare results from two generations of global climate models (GCMs) simulations for the city of Recife-PE: CMIP3 and CMIP5. Differences and similarities in historical and future climate simulations are presented for four GCMs using CMIP3 scenarios A1B and A2 and for seven CMIP5 scenarios RCP4.5 and RCP8.5. The scale reduction technique applied to GCMs scenarios is statistical downscaling, employing the same set of large-scale atmospheric variables as predictors for both sets of scenarios, differing only in the type of reanalysis data used to characterize surface variables precipitation, maximum and minimum temperatures. For CMIP3 scenarios the simulated historical climate is 1961-1990 and CMIP5 is 1979-2000, and the validation period is ten years, 1991-2000 for CMIP3 and 2001-2010 for CMIP5. However, for both the future period analyzed is 2021-2050 and 2051-2080. Validation metrics indicated superior results from the historical simulations of CMIP5 over those of CMIP3 for precipitation and minimum and similar temperatures for maximum temperatures. For the future, both CMIP3 and CMIP5 scenarios indicate reduced precipitation and increased temperatures. The potencial evapotranspiration was calculated, projected to increase in scenarios A1B and A2 of CMIP3 and with behavior similar to that observed historically in scenarios RCP4.5 and 8.5.
Neutron yield and ion production with respect to cathode radius in spherical plasma focus
Authors: AY Yaşar
Published: March 2020

The effect of the cathode radius variation (from 11.5 cm to 17 cm) on neutron yield, discharge current, plasma temperature, and ion properties (velocity, energy, and density) are investigated in this study using the developed spherical plasma focus model and the results are reported in this paper. Peak discharge current and peak beam-ion properties decrease with increasing the cathode radius. Maximum plasma temperature (22.34 eV) and maximum beam-target neutron yield (1.18×1013) are achieved using the cathode with 15 cm radius. The longest pinch duration for all calculations is also achieved using 15 cm cathode radius. It is found that the optimum cathode radius is 15 cm in terms of the neutron yield, plasma temperature and beam-ion properties in spherical plasma focus device.
Improvisatory Exercises as Analytical Tool
Authors: Bertolani Valentina
Published: March 2020

Avant-garde improvised music tends to elude analytical attempts, which have so far mostly focused on transcribing and describing sound parameters (e.g., pitch, timbre, texture, etc.) in the extant recordings. However, this does not account for the irreducible immediacy of the improvisatory practice, whose recordings are just the tip of the iceberg of a more multifold and varied production (often not recorded). This issue, inherent to the type of creative process at hand, suggests that, when analyzing, we should also take into consideration what aesthetical principles influenced the choice of a succession of musical events over another.

The principles of action-reaction and of non-repetition of the musical material were the guiding elements of the improvisatory practice of the Italian Gruppo di Improvvisazione Nuova Consonanza (GINC) in the period 1965–1969. To adhere to these principles, GINC created a set of exercises to be practiced by members during the rehearsals. In this article I will analyze three examples from a 1967 video recording of the Gruppo di Improvvisazione Nuova Consonanza using these exercises to understand and comment the choices made on the spot by the improvisers. This strategy affords a better awareness of the group actions within the improvisatory context.