bluuebunny/crossref_metadata_2025 huggingface dataset:
AI-enabled Integration in the Supply Chain
Authors: Kieu Manh-Kha , Nayak Rajkishore , Akbari Mohammadreza
Published: September 2022

Artificial Intelligence (AI) is getting increased attention from various manufacturing industries, including fashion and textiles, due to its ability to work effectively, similar to human intelligence. This Systematic Literature Review (SLR) paper proposes potential future research directions that emphasize the impacts of AI on supply chain integration (SCI) efforts through information sharing (IS). A structured literature review of articles in the 2010-2021 period, addressing geographic location, journals, publishers, authors, research designs, and applied theories, has been used to prepare this paper. The additional discussion of AI incorporates information from the structured review to conclude the findings and suggest future research directions. The authors have used the Scopus database and prestigious peer-reviewed journals to search for relevant papers using suitable keywords. This paper concluded that the Asian region has the highest concentration of publications and that AI adoption positively affects the IS-SCI relationship. Empirical quantitative research design and resource-based view theory are prominent among the reviewed publications. This SLR paper is limited by not having the impacts of AI discussed at the subset level.
A NARRATIVE ANALYSIS OF ENGLISH TEACHER’S EXPERIENCES IN TEACHING PUBLIC SPEAKING THROUGH ONLINE LEARNING-BASED EMERGENCY REMOTE TEACHING
Authors: Khoirunnisa Indah
Published: September 2022

This article is focused to investigate the way the English teacher prepares, implements and evaluates, what problems are faced, and how to solve problems that occur during the learning activity takes place. The study employed a narrative analysis method to find out the English teachers’ experiences, the problems and its solutions in the implementation of teaching public speaking through online learning based-emergency remote teaching in the Covid-19 pandemic situation. The first  result of this study reveals that there are several things that must be considered to carry out learning activities, namely the preparation stage, the implementation stage and the stage for evaluating student learning outcomes. The second result indicates that several problems emerged on its implementation, namely poor internet connections,  the lack of student internet quotas, and the problem of direct interaction between teacher and students during virtual meetings. The third result come with the solutions that were found to overcome network problems and internet quotas is to make learning video recordings posted on Google Classroom or Telegram;  so students can watch them at a later time after having a good internet connection and sufficient quota, and the provision of Telegram as a forum for indirect interaction between teachers and students outside of direct interaction in virtual meetings.Keywords: Narrative analysis, Public speaking, Online Learning, Emergency Remote Teaching
ENGAGING STUDENTS SPEAKING SKILL USING GOOGLE MEET PLATFORM: STUDENTS PERCEPTION
Authors: Halimatusyadiyah Nisa
Published: September 2022

This study was conducted to find out students perception of engaging speaking skill using Google Meet platform and to find out the students perceptions of speaking skill using Google Meet platform. This study used a qualitative case study, and the data were taken through online classroom observation and close-ended questionnaire. Twenty four speaking students in the first semester of the English education department in one private university in Ciamis were involved in this study.  In analyzing the data of observation, the researcher classified, interpreted and commented the results of observation from google meet application. The data from the students’ questionnaire item were analyzed by using percentage compilation. Based on the finding, there are three key points of the present research. First, Google Meet online was conducted in one private university in Ciamis to improve students’ engagement speaking skill. Second, the students were generally perceives google meet as an application that enables them to learn English optimally, with enjoyed, relax, and enthusiasm. Third, google meet application gave students more opportunity to practice English rather than regular classroom. Keywords: Speaking, Google Meet, Online Class.
EFL STUDENTS’ PERCEPTIONS ON SUPPORTED SCHEMATA TOWARDS TRANSLATING VARIED TEXT USING GOOGLE TRANSLATE
Authors: Nata A. M. Kharisma , Herlina Rina , Tarwana Wawan
Published: September 2022

This study reports the analysis of students’ perception of using schemata towards Google Translate results and their strategies to use their schemata in improving Google Translate results. The approach of this research was a case study. Observation and interviews were used as the instrument for collecting the data. The subject of this study was students of grade three in the English Education Program at one private University in Ciamis and the data collection was derived from online class observation and interviews with translating lecturers. The results showed that the use of schemata is needed in translating text from Google Translate. The results also showed that the outline of students’ strategies to improve Google Translate results can be conducted by checking vocabulary, and sentence structure, and using their understanding or schemata. The researcher suggested for the students of the English Education Program practice translating more and keep expanding their views to make the quality of their translation even more perfect..Keywords: Google Translate; Perception; Schema.
PERANCANGAN MESIN PENGUPAS KULIT KACANG TANAH HOME INDUSTRI
Authors: Angga Pratama Okta , Abidin Zenal
Published: September 2022

Pembuatan mesin pengupas kulit kacang tanah untuk memenuhi kebutuhan pengupasan kulit kacang tanah saat petani sedang musim panen, mesin pengupas di harapkan dapat membantu proses pengupasan sehingga dapat meningkatkan efisiensi dan kualitas produksi.Tahapan pembuatan mesin pengupas kulit kacang tanah terdiri dari penyusunan spesifikasi teknis produk, perancangan konsep produk bertujuan menghasilkan alternative merancang produk yang merupakan pengembangan konsep. Gambar sketsa desain berkapasitas 1kg/menit ukuran mesin panjang 520 mm x lebar 450 mm x tinggi 933,61 mm, tenaga penggerak berupa motor listrik ¼ HP 1400 rpm. Proses pembuatan rangka mesin pengupas kulit kacang tanah menggunakan besi siku 4x4 cm tebal 2 mm, sistem transmisi mesin pengupas kulit kacang tanah terdiri dari beberapa komponen yaitu pulley, v-belt, bantalan, dan motor listrik. Sitstem transmisi akan memperlambat kecepatan motor listrik dari 1400 rpm menjadi 98 rpm, mekanisme yang bekerja pada sistem transmisi barawal dari motor listrik ditransmisikan ke pulley  dilanjutkan bersamaan pulley yang sudah terpasang v-belt pada poros penghubung akan didistribusikan lagi menuju pulley poros penggiling untuk mengupas kulit kacang tanah.
Strategy of Rice Variety Technology Transfer for Supporting the Agricultural Inventions Commercialization
Authors: Pasaribu Morina , Baga Lukman M. , Purwono Joko
Published: September 2022

Innovation is an important aspect in the nation's competitiveness. Technology transfer is required to bring invention into innovation. However, the implementation technology transfer, especially commercialization technology is still considerably low. This challenge is faced by Indonesian Agency for Agricultural Research and Development (IAARD) to commercialize Indonesian rice varieties. Adoption and interest of Industry in the commercialization of varieties invented by IAARD in 2019 was only 11%. This study aims to build roadmap business strategy for commercialization rice varieties invented by IAARD. The method used in this research was a business model canvas approach, SWOT analysis, and a strategic roadmap. The results showed that there were 11 strategies that can be applied in four approaches , namely a) intensive strategy: expanding and mapping new customer segmentation, optimizing promotion mechanisms and attracting new partners, and strengthening the organizational structure of implementing technology transfer, b) turn-around strategy: adding and increasing HR competence, planning R&D activities by measuring Technology Readiness Level (TRL or TKT), and increasing the capacity of facilities and infrastructure, c) diversification strategy: improving the quality of rice varieties and commercial technology transfer services, pre-licensing, and d) consolidation strategy: building information systems, collaborative alliances with stakeholders, and valuation of intangible assets. The strategies were described in 19 programs mapped on a strategy roadmap of transfer of technology on commercialization rice variety invented by IAARD.
Clinical and Laboratory Factors Associated With Wound Healing in Patients With Pyoderma Gangrenosum: A Retrospective Study
Authors: Malachowski Stephen , Latour Emile , Ortega-Loayza Alex
Published: September 2022

Introduction. Pyoderma gangrenosum (PG) is a rare, chronic, inflammatory, and ulcerative condition that often affects the lower extremities. Laboratory markers such as neutrophil-to-lymphocyte ratio, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) level may have prognostic utility in the management of ulcerative or inflammatory conditions. Objective. This exploratory analysis investigated the relationship between readily available clinical factors and target ulcer healing within 6 months from the first visit. Methods. Two logistic regression models were fit—one focused on ESR as a primary predictor adjusted for age and hemoglobin level, and the other focused on CRP level adjusted for body mass index (BMI) and smoking history. Results. The odds of wound healing at 6 months for patients with abnormal CRP was 0.19 times the odds of healing (95% CI, 0.03–0.77) for those with normal CRP (<10 mg/L), after accounting for BMI and smoking. Similarly, after accounting for age and hemoglobin, those with high ESR experienced 2.81 times the odds of healing (95% CI, 0.69–14.58) at 6 months compared with patients with normal ESR. Conclusions. After adjustment, an increased CRP level was associated with lower odds of healing; however, further research is warranted to investigate its prognostic utility. The relationship between ESR and odds of healing should be interpreted with caution because the wide 95% CI for the adjusted odds ratio reflects marked uncertainty in the estimate. This research brief may inform investigations into inflammatory markers as possible prognostic markers for wound healing in patients with PG.
The molecular effect of wearing silver-threaded clothing on the human skin
Authors: Melnik Alexey , Callewaert Chris , Dorrestein Kathleen , Broadhead Rosie , Minich Jeremiah J. , Ernst Madeleine , Humphrey Greg , Ackermann Gail , Gathercole Rob , Aksenov Alexander A. , Knight Rob , Dorrestein Pieter C.
Published: September 2022

With growing awareness that what we put in and on our bodies affects our health and wellbeing, little is still known about the impact of textiles on the human skin. Athletic wear often uses silver threading to improve hygiene, but little is known about its effect on the body’s largest organ. In this study we investigated the impact of such clothing on the skin’s chemistry and microbiome. Samples were collected from different body sites of a dozen volunteers over the course of twelve weeks. The changes induced by the antibacterial clothing were specific for individuals, but more so defined by gender and body site. Unexpectedly, the microbial biomass on skin increased in the majority of the volunteers when wearing silver threaded t-shirts. Although the most abundant taxa remained unaffected, silver caused an increase in diversity and richness of low-abundant bacteria and a decrease in chemical diversity. Both effects were mainly observed for women. The hallmark of the induced changes was an increase in the abundance of various monounsaturated fatty acids (MUFAs), especially in the upper back. Several microbes-to-metabolites associations were uncovered including Cutibacterium, detected in the upper back area, that was correlated with the distribution of MUFAs; and Anaerococcus spp. found in the underarms, which were associated with a series of different bile acids. Overall these findings point to a notable impact of the silver threaded material on the skin microbiome and chemistry. We observed that relatively subtle changes in the microbiome result in pronounced shifts in molecular composition.
Metal-Free Covalent Organic Frameworks Containing Precise Heteroatoms for Efficient Oxygen Reduction Reaction
Authors: Fang Qianrong , Li Jiali , Jia Ji , Suo Jinquan , Li Cuiyan , Yusran Yusran , Li Hui , Valtchev Valentin , Qiu Shilun , Liu xiaoming
Published: September 2022

Heteroatom-doped carbon-based nanomaterials are one of the most promising metal-free electrocatalysts due to their high activity, low cost, long lifetime, and environmental friendliness. However, the precise atomic position is hard to tune; moreover, the specific role of those heteroatom species is still unclear. Herein, we report a series of metal-free benzotrithiophene-based covalent organic frameworks containing various heteroatoms (Se, S or O), BTT-COFs (named JUC-616, JUC-617, and JUC-618, respectively), and explore their oxygen reduction reaction (ORR) catalytic activity. Remarkably, JUC-616 involving precise Se atoms exhibits an onset potential of 1.02 V and half-wave potential of 0.78 V, which is the best among metal- and pyrolysis-free COF-based electrocatalysts reported so far. Furthermore, we demonstrate that the high ORR catalytic performance of JUC-616 can be attributed to the small free energy and overpotential by DFT calculations. This work thus promotes the promising potential of functionalized COFs with precise heteroatoms for electrocatalysts.
Direct evidence for water antibonding orbital mixing in the hydrated electron from its X-ray absorption spectrum
Authors: Li Xingpin , Jia Xiangyu , Paz Amiel , Cao Yuquan , Glover William
Published: September 2022

The X-ray absorption spectrum (XAS) of the hydrated electron (e−(aq)) has been simulated using time- dependent density functional theory with a quantum mechanics/molecular mechanics description. A unique XAS peak at 533 eV is observed with an energy and intensity in quantitative agreement with recent time-resolved experiments, allowing its definitive assignment as arising from water O1s transitions to the singly occupied molecular orbital (SOMO) in which the excess electron resides. The transitions acquire oscillator strength due to the SOMO comprising an admixture of a cavity-localized orbital and water 4a1 and 2b2 antibonding orbitals. The mixing of antibonding orbitals has implications for the strength of couplings between e−(aq) and intramolecular modes of water.
ANÁLISIS DE GÉNERO SOBRE LA DEMANDA Y GRADUACIÓN DE PROGRAMAS DE INGENIERÍA EN COLOMBIA. CASO DE ESTUDIO EN LOS PROGRAMAS DE INGENIERÍA ELÉCTRICA
Authors: Mesa Quintero Noé Alejandro
Published: September 2022

El siguiente artículo presenta un análisis estadístico de los programas de ingeniería dentro del contexto de la demanda, permanencia y graduación de los estudiantes en Colombia, de acuerdo con su género. La información utilizada fue suministrada por el Sistema Nacional de Información de la Educación Superior (SNIES). En primer lugar, se analizan encuestas desarrolladas a las mujeres de los programas de ingeniería eléctrica de Colombia, relacionados con su permanencia. En segundo lugar, de acuerdo con los resultados, se plantea un posible escenario de acompañamiento, basado en un modelo de predicción sobre la deserción académica para las estudiantes de ingeniería. Finalmente se proponen algunas recomendaciones generales para la promoción de los programas de Ingeniería Eléctrica en Colombia.
EL APRENDIZAJE BASADO EN PROBLEMAS COMO MÉTODO DE ENSEÑANZA-APRENDIZAJE PARA DETERMINAR LA IMPORTANCIA DE LA CONTAMINACIÓN ATMOSFÉRICA EN LA MOVILIDAD. ESTUDIO DE CASO ZONA UNIVERSITARIA CHAPINERO BOGOTÁ COLOMBIA
Authors: Torres Parra Camilo , Saldeño Yelinca
Published: September 2022

La responsabilidad ética y profesional y la comprensión de los impactos de la ingeniería en varios contextos son habilidades importantes del ejercicio profesional de la ingeniería moderna. De allí que formen parte de las habilidades que se evalúan en la acreditación de ABET. En este trabajo se describe el instrumento usado para tal efecto en el curso de Termodinámica para Ingeniería Industrial de la Facultad de Ingeniería y Ciencias de la Javeriana Cali. En dicho instrumento, los estudiantes deben proponer un modelo de emisión de dióxido de carbono y de distribución de fuentes de energía primaria consistentes con limitar el aumento de temperatura global a 2°C para mediados de este siglo. Para una muestra de 70 estudiantes en tres semestres, el resultado fue una calificación promedia de 4.24, mostrando un desempeño satisfactorio en la evaluación propuesta.
Implications of the war in Ukraine on the Belt and Road Initiative
Authors: Prebilič Vladimir , Jereb Vid
Published: September 2022

The war in Ukraine will have broad implications for the European region and the world as a whole. It has already changed the intricate balance in the world order influencing great power competition rendering some geostrategic priorities obsolete while reinforcing others. The biggest geo-economic project of the People’s Republic of China (PRC): the Belt and Road (BRI) initiative, will be no exception. The transport and energy flows of BRI will be disrupted due to the new Iron Curtain descending across Europe in the form of sanctions against aggressors in the war in Ukraine. To balance this in the short term, the PRC will have to reroute much of its BRI cargo and projects into other corridors. In the long term, the PRC will attempt to divert Russian resources from the West to itself within the BRI framework, thus rendering western sanctions ineffective and assuring the longterm success of the BRI.
Socio-economic aspects of potential migrants of the mountainous region of Adjaria
Authors: Putkaradze Merab , Abuselidze George
Published: September 2022

Maintenance of the optimum quantity of population in mountainous regions of the world and management of migration processes are among urgent matters. The problem is so difficult that it requires a complex study and foresees regional originalities. Therefore, the main objective of the research is to study the aims and factors involving potential migrants in possible migration processes, based on the example of Georgia, in particular on the example of the mountainous region of Adjaria. The research was mainly based on sociological questioning and an in-depth interview method, by which a comparison of surveys conducted in the Soviet period and in independent Georgia as well as a comparison of quantitative and qualitative properties of migration processes were performed. As a result of the research, it was concluded that main reasons causing potential migration processes in the modern period are not social, but economic and ecological factors. Besides, in different social groups, geographical originalities of trends of expected migration processes were found. Therefore, events managing the expected migration processes are set, which would bear huge importance for working out the country’s migration policy and efficiently fulfilling municipal programs.
Stabilisation and association agreement between the Western Balkan countries and the European Union
Authors: Nezirović Senada , Živko Ana , Durmišević Belma , Hodžić Amna
Published: September 2022

The European Union (EU) represents a certain partnership and alliance between states and countries. It is not governed as the United States of America, nor intergoverned as the United Nations. Member States of the EU are sovereign countries united to become privileged and globally successful. Every enlargement of the Union is significant, but the fifth enlargement has been recognised, so far, as the most significant, showing the unification of Eastern and Western Europe. However, the most significant enlargement is yet to come with the Western Balkan countries becoming Member States of the EU (Serbia, Bosnia and Herzegovina, Montenegro, Albania, Kosovo and North Macedonia), considering the political and economic situation of the region. The European Commission has proposed the Stabilization and Association Process (SAP) for South East Europe, as the most significant frame for the EU to ensure relations with the Western Balkan countries and to direct its overall enlargement policy to this part of Europe. Associations of the Western Balkans are usually negative, referring to weak economic development, wars and political instability, which have led to the pre-accession strategy for the EU membership known as the Stabilisation and Association Agreement (SAA). The aim of this paper is to present the progress of the Western Balkan countries towards the EU membership, their current state, and the problems they face on that path and to explain the SAP and the SAA.
МЕХАНИЗМ КИСЛОТНО-ОСНОВНЫХ ВЗАИМОДЕЙСТВИЙ И СТРОЕНИЕ КОМПЛЕКСОВ В РАСТВОРАХ 3,5-ДИМЕТИЛПИРАЗОЛА В МЕТАНСУЛЬФОНОВОЙ И ТРИФТОРУКСУСНОЙ КИСЛОТАХ
Authors: Майоров В.Д. , Тараканова Е.Г. , Кислина И.С.
Published: September 2022

Методами ИК спектроскопии и квантовой химии определены структурно-энергетические параметры водородосвязанных комплексов 3,5-диметилпиразола (ДМП) в растворах метансульфоновой (МСК) и трифторуксусной (ТФУК) кислот составов 1:1 и 1:2. Установлено, что закономерности комплексообразования ДМП с сильными кислотами в системах ДМП–МСК и ДМП–ТФУК практически одинаковы. Ключевой стадией механизма кислотно-основных взаимодействий в них является переход протона молекулы кислоты (HA) на атом азота молекулы основания. При этом образуются анионы А-, которые входят в состав водородосвязанных ионных пар, содержащих мостики N-H+∙∙∙O-. Показано, что в растворах ДМП–МСК и ДМП–ТФУК составов 1:1 присутствуют комплексы, состоящие из двух ионных пар, а в растворах составов 1:2 – комплексы, представляющие собой ионную пару, сольватированную молекулой кислоты. Особенности строения комплексов ДМП с сильными кислотами обусловлены наличием в молекуле основания протонодонорной группы NH, что приводит к формированию дополнительных мостиков N-H∙∙∙O. Определены условия, при которых в растворах кислот образуются либо только гомосопряженные анионы (А∙∙∙Н∙∙∙А)- с сильными квазисимметричными Н-связями, либо только анионы А-, что уточняет и дополняет общую схему кислотно-основных взаимодействий в растворах.
Influence of Padeye Placement on Ship Block Lifting
Authors: Arifuddin Andi Mursid Nugraha , Pawara Muhammad Uswah
Published: September 2022

Nowadays, steel ship construction in Indonesia is dominated by the hull block construction method. This method can reduce man-hours as the ship is manufactured by a division of the hull into several sections/blocks; here, it can be worked in parallel. Once work is finished on these blocks and then proceeding to the main hull for assembling, the lifting operation is performed on the blocks during this erecting process. Lifting of ship blocks must be planned safely to avoid damage. One of the items that must be considered is the position of the padeye. The placement or installation of the padeye in the block during the lifting operation plays a vital role in the deformation and working stress of the block structure. Consequences if this is not observed, which van cause misalignment in the welding join path on ship bloks due to excessive plastic deformation and stress. Therefore, this study aims to simulate the placement of a padeye that results in minimum deformation and structural stress. The method used in this research is the stiffness method applied in computer programs. In this studied, it had been recorded that the structure on the ship blok is deformed and stressed at each padeye position. Based on the simulation from 23 positions of the padeye, the optimal position of the pad eye is at position 10 in simulation 2 with deformation of x, y, and z coordinates which are 7 mm, 2 mm, and 7 mm, respectively. Generrally, In this case shown the deck girder and longitudinal beam structure is dominantly subjected to high deformation and stress in several position.
Integração de Parâmetros Ambientais em Imagens Multifontes
Authors: Albuquerque Renato dos Santos , Junior João Rodrigues Tavares , Candeias Ana Lúcia Bezerra
Published: September 2022

O Sensoriamento Remoto (SR) passou a ser largamente utilizado ao longo das últimas décadas pelo rápido desenvolvimento tecnológico de sensores imageadores multifontes, além de inovadores conceitos tecnológicos para o desenvolvimento de modelos e métodos que possa explorar e avaliar novas formas de aquisição de dados espaciais. Nesse contexto, este trabalho tem como objetivo investigar dados LiDAR integrados a imagens orbitais multiespectrais do CBERS-4 para avaliação de um novo índice com base em parâmetros ambientais. Paras isso, foram analisadas o uso integrado de dados LiDAR em imagens do CBERS-4 usando fatiamento por altitudes com os índices físicos NDVI, NDWI e NDBI e o desenvolvimento de um novo índice para melhor aplicação da legislação ambiental. Como resultado, a acurácia da classificação supervisionada do uso e ocupação do solo pelo coeficiente Kappa apontou Boa Qualidade, e o índice de Exatidão Global (EG) indicou 100% de separabilidade dos alvos para as imagens dos períodos (29-08-2019 e 22-01-2015). No desenvolvimento do novo índice ambiental, a fórmula matemática baseada nos índices físicos NDVI e NDBI, pelo critério tentativa e erro de intervalo entre -1 a +1 que atendeu às necessidades de integração foi o valor zero (0), em escala logarítmica log10. Como conclusão, os resultados confirmam que é possível, usando fatiamento por altitudes com os índices físicos NDVI e NDBI para analisar o uso integrado de dados LiDAR 3D em imagens multiespectrais orbitais CBERS-4 a criação de um novo índice físico ambiental.
Comparação dos índices NDVI e NDBI para imagens MUX/IRS/CBERS-4 com número digital (ND) e reflectância (ρ) manocromática
Authors: Albuquerque Renato dos Santos , Candeia Bruna Araújo , Júnior João Rodrigues Tavares , Candeias Ana Lúcia Bezerra
Published: September 2022

O Sensoriamento Remoto (SR) passou a ser largamente utilizado ao longo das últimas décadas pelo rápido desenvolvimento tecnológico de sensores imageadores multifontes e por suas inúmeras aplicações dedicados a compreender e analisar heterogeneidades espectral, radiométricas, espacial e temporal dos mais variados alvos da superfície terrestre. Dentre as diversas técnicas empregadas, destacam-se o uso de índices físicos por facilitar a obtenção de informações sobre diferentes alvos. Quando se pretende analisar valores físicos de índices NDVI e NDBI, deve-se levar em consideração a correlação do alvo por números digitais (ND) e por reflectância, se e como essas duas mais variáveis estão relacionadas para obter o melhor aproveitamento das informações. Neste contexto, este trabalho tem como objetivo comparar por ND e reflectância os índices NDVI e NDBI e avaliar similaridades ou variações significativas entre os alvos (vegetação, urbano e água). Para isso, foram utilizadas duas imagens distintas do satélite CBERS-4 sensores MUX e IRS. Todos os cálculos e análises foram realizados por meio do software e das ferramentas do QGIS na versão 3.16.2. Como resultado, observou-se que houve similaridade entre os alvos Vegetação e Urbano, sendo notada variações significativas com e sem correção radiométrica para o alvo Água, ano 2016 e 2019. Desta forma, após realização da correção radiométrica os valores de reflectância dos alvos para o NDVI e NDBI tiverem respostas mais precisas e, portanto, mais sensíveis quando comparadas com ND. Vale destacar, que a relação ND e reflectância para o NDVI e NDBI são aproximadamente lineares, não identificando diferenças significativas.
Aplicação do Índice Topográfico de Umidade (TWI) e Métricas Fenológicas, na análise temporal do comportamento da cobertura vegetal na Mesorregião do Nordeste da Bahia
Authors: Fernandes Lucas Amorim , Fortunato Udmilla Moura Contes , Borges Elane Fiuza
Published: September 2022

O Índice Topográfico de Umidade (TWI) está relacionado a distribuição das zonas de saturação de água superficial e da água no solo. Haja vista, a ocorrência de eventos relacionados a fenologia vegetal em regiões semiáridas geralmente está influenciada não somente pelos índices pluviométricos, mas também pela disponibilidade hídrica para a vegetação. Analogamente, esse estudo objetivou-se analisar a fenologia vegetal a partir das métricas fenológicas e relacioná-las ao TWI, associando-os ao processo de Desertificação no bioma Caatinga. A metodologia aplicada consistiu na geração do TWI nos softwares QGIS e SAGA GIS, com a aquisição do Modelo Digital de Terreno (MDT) e resolução espacial de 30 metros. Logo, as métricas fenológicas foram extraídas por meio das imagens MODIS/Terra (MOD13Q1) que contém o índice de vegetação (EVI) correspondendo ao período temporal de 2001 a 2017, sendo recortadas no software ENVI e processadas no programa TIMESAT com a aplicação do filtro de suavização Savitzky-Golay. Como principais resultados o TWI indicou valores baixos de umidade nas regiões mais elevadas e menos propícias a saturação hídrica na área de estudo, sendo que os maiores valores estão nas áreas planas/suavizadas do Polo mais propícias a saturação hídrica. As métricas fenológicas extraídas indicaram melhor análise do comportamento sazonal da vegetação, especificamente eventos de seca no Polo de Jeremoabo. No tocante, o cruzamento dos dados entre o TWI e as Métricas Fenológicas por meio da tabulação cruzada, ofereceram melhor detalhamento comportamental entre ambas as variáveis na região, sendo que as métricas apresentaram relações diretas a sazonalidade climática da região.
Comparação de métodos de detecção de indivíduos vegetais da Caatinga a partir de dados LiDAR aerotransportado
Authors: Nishiwaki Adriana Aparecida Megumi , Moura Magna Soelma Beserra de , Galvíncio Josiclêda Domiciano , Santos Cloves Vilas Boas dos , Carvalho Hérica Fernanda de Sousa
Published: September 2022

O sistema de varredura a laser realiza o escaneamento da superfície alvo para obtenção de levantamentos tridimensionais. O produto resultante é uma nuvem de pontos que são formadas por pulsos emitidos em alta frequência pelo scanner, cujos os retornos das emissões ao sistema LiDAR fornecem métricas utilizadas para diversas aplicações. Na aplicação florestal, muitos estudos utilizam dados de LiDAR aerotransportado para estimar dados de inventários florestais. O presente estudo visa estimar o número de árvores e suas respectivas alturas totais, localizadas na área experimental da Embrapa Semiárido, no município de Petrolina, Pernambuco, usando diferentes algoritmos com o intuito de comparar a eficiência dos mesmos. Em campo, foram contabilizados indivíduos com DAP ≥ 3 cm. Os dados LiDAR foram obtidos na plataforma do Projeto Pernambuco Tridimensional – PE3D e processados em software R com o uso do pacote lidR. Foram gerados dois modelos (MDT e MDS). A detecção de indivíduos foi feita a partir das nuvens de pontos e do CHM, ambas por meio da aplicação do Filtro Local Máximo com janela de tamanho variável baseada na relação entre o diâmetro da copa e a altura total do indivíduo. Na geração do CHM, foram utilizados dois diferentes algoritmos (point-to-raster e pitfree), em diferentes resoluções (0,5 e 1 em point-to-raster e 0,5 em pitfree) e suavizações com um filtro de mediana aplicado nos CHMs criados pelo algoritmo point-to-raster, totalizando seis tipos diferentes de CHM. O uso de nuvens de baixa densidade de pontos para detecção de indivíduos demonstrou-se inferior comparado ao uso de CHM, mesmo em relação ao CHM com poços. O método de suavização com resolução de 0,5 m apresentou melhor resposta na identificação das árvores dentre os métodos analisados, contrastando com a técnica usada para remover os poços (pitfree), que revelou baixa precisão, no entanto, obteve resultados significativos na estimativa de altura das árvores.
THE INFLUENCE OF MINING IN THE QUADRILÁTERO FERRÍFERO: LANDSCAPE SPATIAL-TEMPORAL DYNAMICS
Authors: Macedo Cássia Ribeiro , Marcelino Reginaldo Arthur Gloria , Amaral e Silva Arthur , Lorentz Juliana Ferreira , De Assis Letícia Rodrigues , Dos Santos Vitor Juste , Calijuri Maria Lúcia
Published: September 2022

The Quadrilátero Ferrífero – QF is the main producer/explorer of iron ore in Brazil, occupying the worldwide leadership group in Mineral Exploration. Considering all the environmental impacts associated with this activity, it is necessary to assess the landscape patterns to support the sustainable planning of mining companies. So, this paper aimed to define the temporal changes in the QF landscape's configuration and composition from 1985 to 2018 and predict 2053. The research was carried out in the QF region, located in Minas Gerais, Brazil. We used classified images of land use/cover from 1985 to 2018 to calculate the landscape metrics and perform the Land Change Modeler tool. Thus, we obtained the landscape patterns over the years and a prediction for 2053. To that content, we used class and landscape metric levels, especially to describe the spatial distribution of land use/cover, and to identify how its composition has changed over the years. The results show that the Forest class contributed the most to Mining, with +0.09% in the area. In addition, the Farming class decreased 12%, with its total area converted among the others land use/cover. Thus, the Forest and Mining patches’ areas raised by 4% and 0.2%, with a tendency for a continuous increase until 2053. However, the forest fragments tended to disaggregate, while the Mining areas tended to become more connected. These results converge to a worrying scenario from an ecological point of view. Therefore, it is necessary to have/search for better supervision related to the compliance of environmental laws to avoid biodiversity losses in mining areas.
Trend analysis in rainfall time series in some Brazilian semiarid cities
Authors: De Almeida Freds Fernando Alves , Cantalice José Ramon Barros , De Almeida Débora Teresa da Rocha Gomes Ferreira , De Souza Werônica Meira , Singh Vijay Paul
Published: September 2022

Nowadays, climate changes are a frequent issue of the scientific community, and although it occurs on a global scale, its impacts often vary from region to region. The objective of this research was to identify the climatic change trends from rainfall in some Brazilian semiarid cities of the Pernambuco state. The Mann-Kendall and Sen-slope trend tests were applied to detect possible trends in the rainfall time series. In addition, the Pettitt test was also applied to identify abrupt changes in precipitation records represented by breakpoints in the time series. The results showed trends of climatic changes in rainfall in fifteen cities, being observed in some localities the decrease of the tendencies in the rainy season, representing a serious problem that compromises the water supply, suppresses agricultural activities, thus making life difficult for the population, because it's in this short rainy season that the water reservoirs of the region are replenished.
Aptidão climática do Estado do Piauí ao cultivo de mandioca
Authors: Fernandes Gabriel Siqueira Tavares , Gonçalves Junior Ângelo da Silva , De Moura Neto Arão , E Silva Laila Lucia Sousa , Miranda Ana Caroline Guimarães , Silva Raiany de Oliveira , Lima Edivania de Araujo
Published: September 2022

O cultivo da mandioca é de grande importância socioeconômica para o Estado do Piauí, sendo considerada como a principal fonte de carboidratos para as camadas mais necessitadas da população e fonte de renda para a agricultura de subsistência do Estado. O Estado do Piauí, está localizado numa área de transição entre as regiões da Pré-Amazônia Úmida e o Nordeste Semiárido, é dividido em quatro mesorregiões, onde está cultura possui grande importância, sendo cultivada em quase todo o Estado. Diante disso, objetivou-se com o presente trabalho identificar as áreas de aptidão climática para a cultura da mandioca (Manihot esculenta Crantz) no Estado do Piauí, em dois períodos distintos: o primeiro de 1980 a2002 e o segundo de 2003a 2018, além de verificar se ocorreu alguma modificação na distribuição espacial de regiões aptas ao cultivo desta cultura nas mesorregiões do Estado. Foram utilizados os dados da National Aeronautics and Space Administration (NASA/POWER). Foi realizado o cálculo da evapotranspiração  e do  Balanço Hídrico Climatológico, com os quais obteve-se o índice efetivo de umidade (Im), que foi interpolado utilizando o método IDW (inverso da potência da distância) pelo software QGIS 3.6.2. O Im foi utilizado como critério para a definição de zonas aptas climaticamente ao cultivo da cultura, pois sintetiza as exigências da cultura quanto à disponibilidade hídrica da região. Os resultados apontam que ocorreu redução nos índices de umidade no segundo período analisado e, com isso, houve mudança entre as áreas de aptidão, ocorrendo redução no Estado. Portanto, observou-se que o Estado possui aptidão para a cultura da mandioca apresentando, entretanto, um aumento na extensão das zonas de aptidão moderada por déficit hídrico, em decorrência da redução no índice de umidade.
Uso e ocupação do solo e sua associação com a temperatura da superfície no município de Pombal – PB
Authors: Araújo Lucas Martins de , Crispim Diego Lima , Silva Rosilene Agra da
Published: September 2022

Este estudo teve como objetivo observar as mudanças no uso e ocupação do solo e associar com a temperatura de superfície (TS) do município de Pombal-PB referente ao período de 1986 a 2016. Nessa pesquisa foram usadas como bandas 3, 4 e 5 do sensor TM / Landsat 5 e as bandas 4, 5 e 6 do OLI / Landsat 8 para analisar as mudanças do uso e ocupação do solo. Para determinar a TS foram empregadas duas imagens multiespectrais (bandas do infravermelho termal), através dos sensores TIRS (Thermal Infrared Sensor), referente às bandas 6 e 10, Landsat 5 e 8, respectivamente, nos quais possuem resolução de 30 metros, para os anos de 1986, 1996, 2006 e 2016. Para determinar as classes de uso e ocupação do solo foi aplicada o método da Máxima Verossimilhança (MAXVER).Para aferir como composições das classes determinadas pelo MAXVER, foi a técnica oficial, índice de Kappa (K). Os resultados induzidos que na escala temporal pesquisada (1986 a 2016) que as classes de uso e ocupação do solo que dissipação foi área antropizada (13,71%) e solo exposto (12,01%), em contrapartida, a classe Caatinga rala redução redução (48,76%). Os resultados do índice de Kappa indicaram um grau de desempenho excelente para os quatro períodos de uso. Os resultados inferiores que as áreas com vegetação (<28 ° C) ou próxima de corpos d'água (28 a 32 ° C) tiveram as menores médias de temperatura de superfície entre os anos de 1986 a 2016. em contrapartida, uma classe Caatinga rala redução redução (48,76%).Os resultados do índice de Kappa indicaram um grau de desempenho excelente para os quatro períodos de uso. Os resultados inferiores que as áreas com vegetação (<28 ° C) ou próxima de corpos d'água (28 a 32 ° C) tiveram as menores médias de temperatura de superfície entre os anos de 1986 a 2016. em contrapartida, uma classe Caatinga rala redução redução (48,76%). Os resultados do índice de Kappa indicaram um grau de desempenho excelente para os quatro períodos de uso. Os resultados inferiores que as áreas com vegetação (<28 ° C) ou próxima de corpos d'água (28 a 32 ° C) tiveram as menores médias de temperatura de superfície entre os anos de 1986 a 2016.
Variação espaço-temporal da evapotranspiração no entorno do Reservatório Engenheiro Francisco Saboia, Ibimirim-PE
Authors: Barbosa Laízy De Santana Azevedo , Lopes Pabrício Marcos Oliveira
Published: September 2022

O presente trabalho teve como objetivo realizar uma análise espaço-temporal da evapotranspiração real diária no entorno do Reservatório Engenheiro Francisco Sabóia, Ibimirim (PE) por meio de dados de satélite. Foram três utilizados imagens do satélite Landsat 8 –OLI, órbita 215 ponto 66, do mês de outubro dos anos de 2018, 2019 e 2020. Obteve-se a estimativa da evapotranspiração real diária por meio do algoritmo SEBAL (Surface Energy Balance Algorithm for Land ) Esse algoritmo é composto por várias etapas, que consiste na estimativa do balanço de radiação e de energia e evapotranspiração. Para obter alguns parâmetros, utilizou-se os dados da estação meteorológica localizada no município de Ibimirim-PE e na cena Landsat 8. Foram aproveitar os valores médios para a evapotranspiração diária de 2,93 mm.dia-1, 1,96 mm. dia-1, 2,07 mm. dia-1 para os anos de 2018, 2019 e 2020, respectivamente. Observe que a evapotranspiração apresenta variação no período analisado principalmente entre 2018 e os outros anos devido à quantidade de radiação disponível para cada dia. Os procedimentos utilizados demonstraram-se eficientes nas análises realizadas, sendo o SEBAL uma ferramenta de extrema importância para a gestão ambiental dos recursos hídricos. Variação espaço-temporal da evapotranspiração no entorno do Reservatório Engenheiro Francisco Saboia, Ibimirim-PE A B S T R A C T The present work had as objective to carry out a spatiotemporal analysis of the daily real evapotranspiration around the Engenheiro Francisco Sabóia Reservoir, Ibimirim (PE) through satellite data. Three images from the Landsat 8 -OLI satellite, orbit 215 point 66, from the month of October 2018, 2019 and 2020 were used. The estimate of the real daily evapotranspiration was obtained by means of the SEBAL (Surface Energy Balance Algorithm for Land) algorithm. This algorithm consists of several steps, which consists of estimating the balance of radiation and energy and evapotranspiration. To obtain some parameters, data from the meteorological station located in the municipality of Ibimirim-PE and from the Landsat 8 scene were used. Average daily evapotranspiration values of 2.93 mm.day-1, 1.96 mm were used. day-1, 2.07 mm.day-1 for the years 2018, 2019 and 2020, respectively. Note that evapotranspiration varies in the period analyzed mainly between 2018 and other years due to the amount of radiation available for each day. The procedures used proved to be efficient in the analyzes carried out, with SEBAL being an extremely important tool for the environmental management of water resources.
MAPPING FOR ENVIRONMENTAL PLANNING THE BASIN OF CÓRREGO RICO, SÃO PAULO
Authors: Rodrigues Flavia Mazzer
Published: September 2022

The landuse is usually an human phenomenon that occurs over the years, due to population increase. The territorial knowledge is needed, and is the first step for environmental planning to implement conservation practices on agricultural production system. This study aimed to develop thematic maps as: hydrography, soil, slope, land use, and subbasins to obtain the main geomorphic morphometric data (physical) of the Córrego Rico Watershed. The techniques of remote sensing and geographic information system were used to elaborate the maps and for calculating the geomorphological data, as area, altitude and length of the drainage net, which were submitted to multivariate statistics. The Córrego Rico Watershed has an area of 563 km2. The predominant slopes were 3-8%, with 55.3% of the total area; and the main use was sugar cane. The soils that predominate in the area are Oxisols towards the Mogi-Guaçú river mouth and Ultisols at the upstream of the basin.
MONITORING OF METHANE ON DAMS OF HYDROELECTRICS OF THE AMAZON BASIN FROM THE AQUA SATELLITE INFORMATION
Authors: Costa Patrícia dos Santos
Published: September 2022

Estudos têm mostrado que as barragens de usinas hidrelétricas resultam em emissões de gases de efeito estufa (GEE’s) quando construídas em áreas florestadas nos trópicos. Tais emissões incluem o gás metano lançado na atmosfera em grande quantidade devido às alterações do nível de água, inundando e expondo grandes áreas de terra ao redor da margem. Atualmente, importantes instrumentos para estudar a concentração de GEE’s na atmosfera, principalmente sobre regiões de difícil acesso, são sondadores a bordo de satélites ambientais. Dentro desse contexto, este trabalho tem como objetivo estudar a variabilidade do metano na atmosfera sobre os reservatórios de Balbina, Tucuruí e Samuel, baseando-se em oito anos de dados (2003-2010) do sistema de sondagem do satélite ambiental AQUA. Além disso, faz-se também um estudo complementar sobre as variabilidades de precipitação e nível do reservatório (quando disponível). A metodologia utilizada se baseou em métodos matemáticos e estatísticos que incluem médias espaciais, anomalias, variância e a técnica de transformada de ondaleta. Os resultados mostraram que existe uma sazonalidade bem definida da concentração média de metano e que a variabilidade da anomalia de metano (em 200 mb) sobre os reservatórios é similar ao longo dos anos, exceto para o nível de 300 mb. Nos estudos de caso, os anos de 2008/2009 se destacaram por comportar dois eventos extremos (cheia e seca) que trouxeram impactos nos âmbitos econômicos, sociais e ambientais. A aplicação da técnica da transformada de ondaleta mostrou que o espectro de potência global apresenta picos dominantes na escala de tempo anual (0,7 a 1,2 anos), no entanto, pode-se notar nos períodos de 2005 a 2006 e 2008 a 2010 máximos valores do espectro de potência da ondaleta nessa escala de tempo. Os resultados deste estudo revelaram que as observações feitas pelo AQUA indicam que existe uma relação entre as condições climáticas, nível do reservatório e concentração de metano na atmosfera.
INTERRELATIONSHIP BETWEEN RAINFALL AND VEGETATION INDEX BY REMOTE SENSING DE SENSORIAMENTO REMOTO
Authors: Sousa Leandro Fontes de
Published: September 2022

Considering the importance of vegetation and influence of climatic factors in development, especially precipitation, the purpose of this study was to find a function that best represents the relationship between rainfall and NDVI in the Paraíba state. We used daily images from the sensor AVHRR / NOAA system with spatial resolution of 4 km and MODIS / Aqua with spatial resolution of 1km product and monthly precipitation data of 250 stations for the years 2007, 2008 and 2009. The method of least squares regression to find the curve that best fitted the dataset was used. The Student t test was applied to the correlation coefficients α = 0.05 level of significance. The results indicate relationship that best represents the behavior of NDVI depending on rainfall is a polynomial second degree curve with better correlations during the dry season (June to September). Generally the NDVIAVHRR showed better correlation with rainfall than NDVIMODIS. In the rainy season they have been weaker because when vegetation reaches maximum force, the NDVI is practically stable. On average the highest correlations (r) found for the two satellites between 0.69 and 0.86 regardless of the year it was wet or dry. It is noteworthy that these adjustments were a little better for the polynomial model.