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Hybrid descriptor definition for content based image classification using fusion of handcrafted features to convolutional neural network features

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International Journal of Information technology (Singapore) 2021年第4期13卷 1365-1374页

作者： Das, Rik Kumari, Khusbu De, Sourav Manjhi, P.K. Thepade, Sudeep Department of Post Graduate Program in Information Technology Xavier Institute of Social Service Ranchi Jharkhand India Department of Computer Applications Yogoda Satsanga Mahavidyalaya Ranchi Jharkhand India Department of Computer Science & Engineering Cooch Behar Government Engineering College Cooch Behar India Department of Mathematics Vinoba Bhave University Hazaribag Jharkhand India Department of Computer Engineering Pimpri Chinchwad College of Engineering Pune India

The efficacy of content-based image classification is dependent on the richness of the feature vectors extracted from the image data. Traditional feature extraction techniques highlight single low level image characteristics like shape, size, texture, color etc. for feature generation. The process often fails to extract meaningful descriptors since considering a single image characteristic will ignore other rich properties of image contents. Mass adoption of Convolutional Neural Network (CNN) has significantly improved classification performances for content-based image data. Recent literature has documented high level of precision for image classification by carrying out transfer learning with open source pre trained Convolutional Neural Network (CNN). However, the concept of transfer learning experiences major setback in case of limited training data due to overfitting of training instances during finetuning. This work has identified this challenge and has attempted to capture probability distribution of input images to a pre trained Convolution Neural Network by utilizing it as a fixed weight feature extractor. The proposed approach has addressed the overfitting problem by removing the finetuning step involved in transfer learning. Further investigation on robust descriptor definition is carried out by concatenating the pre-trained CNN features to handcrafted features. The hybrid architecture has encouraging outcomes that have outclassed the classification accuracies of state-of-the-art handcrafted techniques. © 2021, Bharati Vidyapeeth's Institute of Computer Applications and Management.

关键词： Augmented feature learning Feature fusion Handcrafted features Image classification Pre trained Convolutional Neural Network (CNN) Representation learning

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Carbon monoxide from cookstoves in developing countries: 1. Emission factors

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Chemosphere - Global Change science 1999年第1期1卷 353-366页

作者： Zhang, J. Smith, K.R. Uma, R. Ma, Y. Kishore, V.V.N. Lata, K. Khalil, M.A.K. Rasmussen, R.A. Thorneloe, S.T. Environmental and Occupational Health Sciences Institute Robert Wood Johnson Medical School and Rutgers University 170 Frelinghuysen Road Piscataway NJ 08854 USA Program on Environment East-West Center Honolulu HI USA University of California Berkeley CA USA Tata Energy Research Institute New Delhi India Tsinghua University Beijing People's Republic of China Portland State University Portland Oregon USA Oregon Graduate Institute of Science and Technology Beaverton Oregon USA US Environmental Protection Agency Research Triangle Park North Carolina USA

Cookstoves in developing countries are individually small, but so numerous that, depending on emission factors, they could be significant influences on global and regional carbon monoxide (CO) inventories. This paper presents a new database of CO emission factors for commonly used cookstoves in developing countries. The emission factors were determined using a carbon balance approach for 56 types of fuel/stove combinations in China and India. These include various stoves (e.g., traditional, improved, mud, brick, and metal, with and without chimney) using animal dung, different species of crop residues and wood, root fuel, charcoal, kerosene, and several types of coals and gases. The chosen fuel/stove combinations represent a large fraction of the total in developing countries. Thus, the database can be used to improve estimates of CO emission inventories. The CO emission factors ranged widely, from 3.0×10-2 g/kg for the coal gas/traditional stove to 2.8×102 g/kg for the charcoal/Angethi stove, nearly 4 orders of magnitude. Since stove efficiencies and fuel energy contents were measured simultaneously, CO emission factors on the basis of a standard cooking task (energy delivered) were also determined and reported in this paper. Task-based emission factors are particularly useful for comparing the air pollution potential of different fuel/stove combinations and assessing the impacts of substitutions.

关键词： Carbon monoxide Emission factors Cookstoves Biomass fuels Fossil fuels Developing countries

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Local wisdom of Aek Latong society for mitigation and adaptation of soil movement disaster in North Sumatra, Indonesia 1

Local wisdom of Aek Latong society for mitigation and adapta...

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1st International Conference on environmental sciences, ICES 2018

作者： Haris, Zainal A. Irianto, Agus Heldi Hermon, Dedi Yulnafatmawita Department of Environmental Science Post Graduate Program Universitas Negeri Padang Prof. Dr. Hamka Street West Air Tawar Padang-West Sumatera25131 Indonesia Universitas Putra Indonesia Lubuk Begalung Padang Indonesia Geographical Department Universitas Negeri Padang Prof. Dr. Hamka Street West Air Tawar Padang-West Sumatera25131 Indonesia Soil Science Department Andalas University Limau Manis Padang Indonesia

Lately, due to advance technology, some of natural disasters could be forecasted, therefore the people can decide where to go to avoid the disasters. However, people in Aek Latong North Sumatra did different thing. They just stayed in their villages or regions without moving to anticipate the impact that might happen. This research was aimed to identify the local wisdom of Aek Latong society in facing, mitigating, and adapting the disaster, especially soil movement disaster in their region. This research was conducted through 3 steps (preparation, main survey, and data analyses). At the first step (preparation) was conducted to get secondary data about Aek Latong, such as geographical position, natural condition, type of natural disaster, society and the tradition. The second step (main survey) was conducted by directly interviewing the people in Aek Latong how they face, mitigate, and adapt the disaster happening. The third step was data analyses. Based on data resulted, Aek Latong society has a strong belief inherited from their ancients that everything come from the almighty God, therefore they have to face it. They believe that God has specific purposes to do so for them, they do not have to easily give up. Then, they also mitigate and adapt the disaster by earlier checking the signs of disaster and following the advice given, besides they did not construct building and do farming activities in sloping area and in the river bank. It could be concluded that Aek Latong society was able to face, mitigate, and adapt to the natural disaster in their region by their belief, knowledge, as well as by following the advice given. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Disasters

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Relationship between drought and soil erosion based on the normalized differential water index(NDWI)and revised universal soil loss equation(RUSLE)model

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Regional Sustainability 2024年第4期5卷 133-144页

作者： Muhammad RENDANA Wan Mohd Razi IDRIS Febrinasti ALIA Supli Effendi RAHIM Muhammad YAMIN Muhammad IZZUDIN Department of Chemical Engineering Faculty of EngineeringUniversitas SriwijayaIndralaya30662Indonesia Master Program of Environmental Management Graduate SchoolUniversitas SriwijayaPalembang30139Indonesia Department of Earth Sciences and Environment Faculty of Science and TechnologyUniversiti Kebangsaan MalaysiaBangi43600Malaysia Department of Civil Engineering Faculty of EngineeringUniversitas SriwijayaIndralaya30662Indonesia Master Program of Agricultural Sciences Graduate Study ProgramUniversitas Muhammadiyah PalembangPalembang30263Indonesia Department of Agribusiness Faculty of AgricultureUniversitas SriwijayaIndralaya30662Indonesia Department of Sociology Faculty of Social and Political SciencesUniversitas SriwijayaIndralaya30662Indonesia

The Langat River Basin in Malaysia is vulnerable to soil erosion risks because of its exposure to intensive land use activities and its topography,which primarily consists of steep slopes and mountainous ***,climate change frequently exposes this basin to drought,which negatively affects soil and water ***,recent studies have rarely shown how soil reacts to drought,such as soil ***,the purpose of this study is to evaluate the relationship between drought and soil erosion in the Langat River *** analyzed drought indices using Landsat 8 satellite images in November 2021,and created the normalized differential water index(NDWI)via Landsat 8 data to produce a drought *** used the revised universal soil loss equation(RUSLE)model to predict soil *** verified an association between the NDWI and soil erosion data using a correlation *** results revealed that the southern and northern regions of the study area experienced drought *** predicted an average annual soil erosion of approximately 58.11 t/(hm^(2)·a).Analysis of the association between the NDWI and soil erosion revealed a strong positive correlation,with a Pearson correlation coefficient of *** assumed that the slope length and steepness factor was the primary contributor to soil erosion in the study *** a result,these findings can help authorities plan effective measures to reduce the impacts of drought and soil erosion in the future.

关键词： Drought Soil erosion Normalized differential water index(NDWI) Revised universal soil loss equation(RUSLE) Langat River Basin

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New records and molecular characterization of Acrozoanthus (Cnidaria: Anthozoa: Hexacorallia) and its endosymbionts (Symbiodinium spp.) from Taiwan

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Marine Biodiversity 2011年第2期41卷 313-323页

作者： Davis Reimer, James Ishikawa, Sohta A. Hirose, Mamiko Molecular Invertebrate Systematics and Ecology Laboratory Rising Star Program Transdisciplinary Research Organization for Subtropical Island Studies (TRO-SIS) University of the Ryukyus Nishihara Okinawa 903-0213 Senbaru 1 Japan Marine Biodiversity Research Program Institute of Biogeosciences Japan Agency for Marine-Earth Science and Technology (JAMSTEC) Yokosuka Kanagawa 237-0061 2-15 Natsushima Japan Graduate School of Life and Environmental Sciences University of Tsukuba Tsukuba Ibaraki 305-8572 Japan

During a recent survey of the zoanthid (Cnidaria: Anthozoa) fauna of Taiwan, specimens resembling Acrozoanthus australiae (family Zoanthidae) were found at Kenting and Green Island, Taiwan, attached to eunicid worm tubes growing out from under large Porites coral colonies in coral reef environments. As this species had previously been described only from eunicid worm tubes in mud flats in Australia and Indonesia, and no studies had specifically examined its phylogenetic position, molecular and morphological examinations were conducted to determine the identity of the Taiwan specimens, and its phylogenetic relationships with other Zoanthidae genera and species. At the same time, endosymbiotic Symbiodinium types within specimens were also investigated. Results from the phylogenetic analyses of sequences of three DNA markers [cytochrome oxidase subunit I, mitochondrial 16S ribosomal DNA, internal transcribed spacer 2 of ribosomal DNA (ITS-2)] strongly suggested that the Taiwan specimens were identical with A. australiae. Based on endosymbiont ITS-2 sequences, these colonies were in symbiosis with Symbiodinium clade D1a (= S. trenchii), theorized to be adapted to both comparatively cold and hot marine environments. Furthermore, phylogenetic analyses from all three zoanthid DNA markers suggest that Acrozoanthus may be within the closely related genus Zoanthus. This study demonstrates the overall lack of data on zoanthid species' distributions, and it is recommended the diversity of zoanthids within the nearby Coral Triangle be investigated to link Indo-Australian zoanthid data with information from Japan and the northwest Pacific. © 2010 Senckenberg, Gesellschaft für Naturforschung and Springer.

关键词： Acrozoanthus COI ITS-rDNA mt 16S rDNA Symbiodinium Zoanthid

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Metagenomic analysis reveals the roles of Actinobacteria in plasticizer-contaminated landfills and aids in identifying key degraders

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Scientific reports 2025年第1期15卷 18157页

作者： Adisan Rungsihiranrut Chanokporn Muangchinda Onruthai Pinyakong International Postgraduate Programs in Hazardous Substance and Environmental Management Graduate School Chulalongkorn University Bangkok 10330 Thailand. Center of Excellence in Microbial Technology for Marine Pollution Treatment (MiTMaPT) Department of Microbiology Faculty of Science Chulalongkorn University Bangkok 10330 Thailand. Center of Excellence in Microbial Technology for Marine Pollution Treatment (MiTMaPT) Department of Microbiology Faculty of Science Chulalongkorn University Bangkok 10330 Thailand. onruthai.p@chula.ac.th. Research Program on Remediation Technologies for Petroleum Contamination Center of Excellence on Hazardous Substance Management (HSM) Bangkok 10330 Thailand. onruthai.p@chula.ac.th. Omics Sciences and Bioinformatics Center Faculty of Science Chulalongkorn University Bangkok 10330 Thailand. onruthai.p@chula.ac.th. Department of Microbiology Faculty of Science Chulalongkorn University Bangkok 10330 Thailand. onruthai.p@chula.ac.th.

Phthalate ester (PAE) contamination, particularly from dibutyl phthalate (DBP) and di-2-ethylhexyl phthalate (DEHP), originating from landfills and released into the environment, poses a significant concern. Understanding PAE biodegradation is crucial for developing bioremediation strategies. This study used cover material from a 1-month-old landfill for soil microcosms. Indigenous microbes effectively removed 300 mg kg of DBP and DEHP as individual and mixed substrates, achieving complete DBP removal and 70% DEHP removal at room temperature (27-30 °C) and 37 °C. Actinobacteria were dominant, indicating potential active PAE-degraders. Shotgun metagenomic analysis revealed an increased abundance of potential PAE catabolic genes, such as those encoding esterase, lipase, and dioxygenase, under all conditions, mainly associated with Streptomyces, Saccharopolyspora, Nocardia, Nocardioides, and Amycolatopsis. The genes associated with Saccharopolyspora were abundant at 37 °C, while those related to Nocardia and Actinomadura were prevalent at room temperature, suggesting temperature preferences. The genera Saccharopolyspora and Actinomadura have not been linked to PAE degradation, indicating potential novel PAE degraders. Furthermore, PAE-degrading bacteria were isolated using media designed from metagenomic data and were categorized into Streptomyces, Amycolatopsis, and Nocardia. This work highlights the roles of rare taxa and provides insights into potential novel PAE degraders, emphasizing the need for further research into these organisms.

关键词： Bioremediation PAE biodegradation pathway Plasticizer Shotgun sequencing Soil microcosm

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Application of geostatistical techniques to assess groundwater quality in the Lower Anayari catchment in Ghana

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HydroResearch 2022年 5卷 35-47页

作者： Abdul-Wahab, Dickson Gibrilla, Abass Adomako, Dickson Adotey, Dennis K. Ganyaglo, Samuel Laar, Cynthia Zakaria, Nafisatu Anornu, Geophrey Graduate School of Nuclear and Allied Sciences University of Ghana Legon-Accra Ghana Nuclear Chemistry and Environmental Research Centre National Nuclear Research Institute GAEC Box LG 80 Kwabenya-Accra Ghana Department of Water Resources and Sustainable Development School of Sustainable Development University of Environment and Sustainable Development Somanya Ghana Ghana Space Science and Technology Institute GAEC Box LG 80 Kwabenya-Accra Ghana Department of Civil Engineering Kwame Nkrumah University of Science and Technology (KNUST) Private mailbag University Post office Kumasi Ghana

In this study, integrated geostatistical techniques were applied to appraise the groundwater quality for various purposes in the Lower Anayari Catchment (LAC), Ghana. Physico-chemical and trace metals were analysed for 41 groundwater samples. Groundwater in LAC was generally found to be moderately hard to fresh and the information entropy-based groundwater quality index (IEGQI) ranked approximately 80.49% of the groundwater as excellent. Partial Least square regression analysis suggests that PO₄³⁻, As, Cd and Fe are important parameters for the prediction of IEGQI values. The irrigation water quality index (IWQI) suggest that 2.44% of groundwater in LAC is suitable for moderate permeability soils, 65.85% for moderate to high permeability soils and 31.71% for moderate to high salt tolerance plants. The LSI and RSI indices rate groundwater in LAC to be aggressive water with a high probability of being corrosive to metals, depending on the levels of dissolved oxygen present. © 2022 The Authors

关键词： Empirical Bayesian Kriging Ghana Groundwater Partial least square regression Water quality indices

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Diversifying Ecology Education for Everyone Through More Inclusive, Interdisciplinary, and Accessible Teaching

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The Bulletin of the Ecological Society of America 2025年第0期

作者： Loren B. Byrne Emily S. J. Rauschert Vikki L. Rodgers Gillian Bowser Aramati Casper Bryan Dewsbury Nia Morales Heather D. Vance-Chalcraft Louise Weber Department of Biology Marine Biology and Environmental Science Roger Williams University One Old Ferry Road Bristol Rhode Island 02809 USA Department of Biological Geological and Environmental Sciences Cleveland State University 2121 Euclid Avenue Cleveland Ohio 44115 USA Math Analytics Science and Technology Division Babson College 231 Forest Street Wellesley Massachusetts 02481 USA Department of Ecosystem Science and Sustainability DEPT 1476 Colorado State University Fort Collins Colorado 80523 USA Department of Biology and Graduate Degree Program In Ecology Colorado State University Campus Delivery 1878 Fort Collins Colorado 80523 USA Department of Biological Sciences Florida International University 11200 SW 8th Street Miami Florida 33157 USA Department of Wildlife Ecology and Conservation University of Florida 110 Newins-Ziegler Hall Gainesville Florida 32611 USA Department of Biology East Carolina University 101 E. 10th Street Greenville North Carolina 27858 USA Department of Biology and Environmental Science University of Saint Francis 2701 Spring Street Fort Wayne Indiana 46808 USA

Educating more students about ecology and its beneficial applications to societal issues is urgent yet challenging. To address this challenge, diversifying ecology education is a key way to make ecology more inclusive, accessible, and interdisciplinary for more people than ever. Advancing this goal requires ecology educators to develop a more expansive view of (1) how to engage more diverse undergraduate students in ecology courses, especially those from historically underrepresented groups and non-majors, (2) the interdisciplinarity of content in those courses, and (3) the learner-centered pedagogies used to engage students. We suggest ways that ecologists can advance “ecology education for everyone” including focusing on connecting ecology to students' everyday lives and local (urbanized) places; applying ecology to solving problems in social–ecological systems; introducing students to the diversity of worldviews about science and nature; and adopting authentic teaching practices such as course-based undergraduate research, service learning, and reflective practices. Through such efforts, ecology education can become more positivistic and pluralistic and help students better appreciate the value of ecology for society and use their ecological literacy to engage in improving local communities and ecosystems. Successful diversification of ecology education should also benefit the discipline of ecology as more diverse students decide to take more ecology courses, potentially pursue ecology-related careers, and support ecologically based decision-making for a more sustainable and environmentally just future for all people.

关键词： ecological literacy ecology education inclusive teaching participatory science pluralistic ecology urban ecology

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Assessment on Improvement of Early Detection Systems in Electrical Rooms of High-Tech Facilities

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Procedia Engineering 2018年 211卷 235-246页

作者： Yu-Jen Chen Chi-Min Shu San-Ping Ho Hsin-Hsiu Ho Hue-Pei Chang Doctoral Program Graduate school of Engineering Science and Technology National Yunlin University of Science and Technology Douliou Yunlin Taiwan 64002 Department of Safety Health and Environmental Engineering YunTech Douliou Yunlin Taiwan 64002 Department of Occupational Safety and Health Chang Jung Christian University Tainan Taiwan 71101

Past air sampling detection (ASD) systems had no definitive positioning; most allocation of sampling points was based on experience. This research discovered that sampling points inside the electrical rooms were significantly affected by the ambient airflow, causing the detection system to have difficulties in fire detection. Fire dynamics simulator (FDS) was used to simulate very early smoke detection apparatus (VESDA) effectiveness within the protection area of an electrical room. Results showed that ASD sampling points in electrical rooms should be placed above high-voltage transformers and capacitors, while rearranging the high risk machines together to avoid long detection pipelines, which increases the transportation time of the gas, thus hindering early detection by the ASD system. Field tests using a smoke detector tester yielded transportation times of 33 s, which was in very good agreement with the simulated results of 35 s by ASPIRE, showing the accuracy of using software to simulate transportation times. Therefore, this research combined FDS with the transportation times of different pipeline designs to conduct performance assessment of VESDA. After appropriate rearrangement of machines, VESDA detection times dropped from 106.0–171.0 s during the original setup to 21.0–31.7 s, assuring the facility to have more time for emergency response. However, it was noticed that FDS software did not have the estimation tool for VESDA transportation times; therefore software such as ASPIRE should be used to calculate the gas transportation times inside the detection pipelines, and then compiled with FDS results to avoid underestimation of actuation times.

关键词： electrical rooms transportation time fire dynamics dimulator vesda aspire

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Influence of recycled aggregate on the rheological behavior of cement mortar

Influence of recycled aggregate on the rheological behavior ...

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14th International Conference on Non-Conventional Materials and Technologies for Sustainable Engineering, NOCMAT 2013

作者： Lima, Paulo Roberto Lopes Filho, Romildo Dias Toledo Da Fonseca Martins Gomes, Otávio 1Post-graduate Program of Civil and Environmental Engineering Department of Technology State University of Feira de Santana Av. Transnordestina S/N-Novo Horizonte Feira de Santana Bahia 44036-900 Brazil Civil Engineering Program/COPPE Federal University of Rio de Janeiro Rio de Janeiro Brazil Centre for Mineral Technology-CETEM Av. Pedro Calmon 900 21941-908 Rio de Janeiro Brazil University of Liege GeMMe Georesources and Geoimaging Sart Tilman B52 4000 Liege Belgium

ISBN: (纸本)9783037859810

In this work it was studied the influence of recycled fine aggregate obtained from construction and demolition waste (CDW) on the rheological properties of Portland cement mortars. The CDW was initially separate in their main constituents (mortar, ceramic and concrete debris) at the laboratory and then grinded separately to the sand size in order to generate more homogeneous fine aggregates. The characterization of the natural and recycled sands was carried out through physical tests, X-ray diffraction, scanning electron microscopy (SEM), and image analysis (shape and texture description parameters). A conventional mortar and three mortars containing recycled sands were produced with a sand/cement ratio of 4 and consistency index of 255±5 mm. The consistency was kept constant by ranging the water-cement ratio from 0.58 to 1.14. The rheological study was performed using a rotating viscometer to obtain torque-rotation ratio and to calculate the yield stress and plastic viscosity. The results indicate that the presence of recycled aggregate causes a lowering of both yield stress and plastic viscosity with respect to the mortar containing natural aggregate. © (2014) Trans Tech Publications, Switzerland.

关键词： Mortar

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