Search results: Found 9

Listing 1 - 9 of 9
Sort by
Mining for Change

Authors: ---
ISBN: 9780198851172 Year: Pages: 512 DOI: 10.1093/oso/9780198851172.001.0001 Language: English
Publisher: Oxford University Press Grant: UNU WIDER
Subject: Economics --- Electrical and Nuclear Engineering --- Environmental Sciences
Added to DOAB on : 2020-06-25 23:58:38
License:

Loading...
Export citation

Choose an application

Abstract

For a growing number of countries in Africa the discovery and exploitation of natural resources is a great opportunity, but one accompanied by considerable risks. In Africa, countries dependent on oil, gas, and mining have tended to have weaker long-run growth, higher rates of poverty, and greater income inequality than less resource-abundant economies. In resource-producing economies, relative prices make it more difficult to diversify into activities outside of the resource sector, limiting structural change. Economic structure matters for at least two reasons. First, countries whose exports are highly concentrated are vulnerable to declining prices and volatility. Second, economic diversification matters for long-term growth. This book presents research undertaken to understand how better management of the revenues and opportunities associated with natural resources can accelerate diversification and structural change in Africa. It begins with chapters on managing the boom, the construction sector, and linking industry to the resource—three major issues that frame the question of how to use natural resources for structural change. It then reports the main research results for five countries—Ghana, Mozambique, Uganda, Tanzania, and Zambia. Each country study covers the same three themes—managing the boom, the construction sector, and linking industry to the resource. One message that clearly emerges is that good policy can make a difference. A concluding chapter sets out some ideas for policy change in each of the areas that guided the research, and then goes on to propose some ideas for widening the options for structural change.

Long-Term Ecosystem Changes in Riparian Forests

Author:
Book Series: Ecological Research Monographs ISBN: 9789811530098 Year: Pages: 234 DOI: 10.1007/978-981-15-3009-8 Language: English
Publisher: Springer Nature
Subject: Ecology --- Forestry --- Botany --- Environmental Sciences
Added to DOAB on : 2020-06-16 23:58:18
License:

Loading...
Export citation

Choose an application

Abstract

This open access book presents and analyzes the results of more than 30 years of long-term ecological research in riparian forest ecosystems with the aim of casting light on changes in the dynamics of riparian forests over time. The research, focusing on the Ooyamazawa riparian forest, one of the remaining old-growth forests in Japan, has yielded a number of interesting outcomes. First, it shows that large-scale disturbances afford various trees opportunities for regeneration and are thus the driving force for the coexistence of canopy trees in riparian forests. Second, it identifies changes in reproductive patterns, highlighting that seed production has in fact quantitatively increased over the past two decades. Third, it describes the decline in forest floor vegetation caused by deer grazing and reveals how this decline has affected bird and insect populations. The book illustrates the interconnectedness of phenomena within an ecosystem and the resultant potential for cascade effects and also stresses the need for long-term ecological studies of climate change impacts on forests. It will be of interest to both professionals and academics in the field of forest science.

Annually Laminated Lake Sediments

Authors: ---
ISBN: 9783039287864 / 9783039287871 Year: Pages: 130 DOI: 10.3390/books978-3-03928-787-1 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Environmental Sciences
Added to DOAB on : 2020-06-09 16:38:57
License:

Loading...
Export citation

Choose an application

Abstract

The collection of papers presented in this book illustrates the recent progress made in varved sediment research and highlights the large variety of methodological approaches and research directions applied. The contributions cover monitoring of modern sediment fluxes using sediment traps; geochronological and sedimentological analyses of annually laminated lacustrine sediments or varves; and multiproxy investigations, including geochemical and biological proxies as well as spatiotemporal analyses based on multicore studies supported by satellite images and X-ray computed tomography (CT). The scientific issues discuss the influences of hydrological and climatological phenomena on short-term changes in sediment flux, the relationships between biogeochemical (limnological) processes in the water column and the formation of varves, the preservation of environmental signals in varved sediments, and possibilities of synchronizing varved records with other high-resolution environmental archives such as tree rings.

Biological Activities of Alkaloids: From Toxicology to Pharmacology

Authors: --- --- ---
ISBN: 9783039289271 / 9783039289288 Year: Pages: 270 DOI: 10.3390/books978-3-03928-928-8 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Medicine (General) --- Therapeutics
Added to DOAB on : 2020-06-09 16:38:57
License:

Loading...
Export citation

Choose an application

Abstract

Natural products are increasingly attracting attention from both basic and applied science. Plant secondary metabolites, especially alkaloids, are receiving interest from a wide range of researchers due to their biological activity. They are produced to protect plants from diseases and herbivores. Therefore, they reveal a toxic activity that affects organisms at various levels of biological organization. A growing amount of research is proving their antimicrobial, antifungal, insecticidal, and anticancer activities. That makes them applicable in various fields from medicine, to pharmacology, veterinary, and toxicology, to crop protection. This Special Issue of Toxins, “Biological Activities of Alkaloids: From Toxicology to Pharmacology"", collects 15 manuscripts describing the ecological, biological, pharmacological, and toxicological effects as well as structural and analytical aspects of plant alkaloids, their mode of action, and possible application in veterinary, medicine, and plant protection. These studies prove the potential for alkaloid application in various areas of science.

Keywords

Arecoline --- lung cancer cells --- mAchR3 --- EGFR --- SRC --- FAK --- dehydrocrenatidine --- neuropathic pain --- voltage-gated sodium channels --- Solanum melongena L. --- malonylated form --- glycoalkaloids --- secondary metabolites --- solasonine --- solamargine --- malonyl-solamargine --- acetylcholinesterase --- antioxidant --- Ovarian cancer --- Rutidea parviflora --- Palmatine --- Apoptosis --- chanoclavine --- toxicology --- subchronic feeding study --- acute toxicity --- endophyte --- Epichloë --- plant secondary metabolites --- glycoalkaloids --- insect heart --- beetles --- insect --- Tenebrio molitor --- Radix Aconiti Lateralis preparations --- short-term and long-term usage --- di-ester diterpenoid alkaloids --- mono-ester diterpenoid alkaloids --- biodistribution --- ergot alkaloids --- livestock --- reproduction --- isoquinoline alkaloids --- antimicrobial activity --- Chelidonium majus --- cytotoxicity --- apoptosis --- sanguinarine --- berberine --- Chelidonium majus --- Berberis thunbergii --- leukemia --- anticancer --- natural products --- alkaloids --- plant secondary metabolites --- ?-carboline --- Staphylococcus aureus --- antimicrobial activity --- cytotoxicity --- acid-sensing ion channel subtype 1a --- bisbenzylisoquinoline alkaloid --- lindoldhamine --- nociception --- inflammation --- isoquinoline alkaloids --- HPLC-DAD --- cytotoxic activity --- Mahonia aquifolia --- Meconopsis cambrica --- Corydalis lutea --- Dicentra spectabilis --- Fumaria officinalis --- Macleaya cordata --- alkaloids --- natural sources --- anticancer --- antibacterial --- antiviral --- antifungal --- Curine --- alkaloid --- macrophage --- neutrophil --- lipopolysaccharide --- n/a

Towards a Sustainable Management of Mine Wastes: Reprocessing, Reuse, Revalorization and Repository

Authors: ---
ISBN: 9783039281749 9783039281756 Year: Pages: 240 DOI: 10.3390/books978-3-03928-175-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Mining and Metallurgy
Added to DOAB on : 2020-04-07 23:07:08
License:

Loading...
Export citation

Choose an application

Abstract

The need for efficient and sustainable management methods of mine waste is continuously growing all around the world. These waste products often present serious management problems due to their more or less significant amounts and possible environmental threats. This Special Issue highlights the recent and new trends in sustainable mine waste management techniques. Currently, it is essential to sustainably manage mine waste, considering social, economic, environmental and technical aspects. In this Special Issue, insights related to the following issues are highlighted: the problems around mine waste, the fine characterization of mine waste, the latest available technical and environmental solutions to efficiently manage mine waste, including treatment and processing before disposal and high value element recovery, with the view of moving towards defining effective, low-cost and ecofriendly methods, the recycling of mine waste products as alternative resources in different sectors, and finally laboratory, pilot and/or industrial-scale studies related to these topics of research. Scientists and industry and governance stakeholders have to face these new challenges to find the best management practices for the future.

Keywords

copper tailings dump --- leaching --- pH --- mobility --- chemical species --- attenuation mechanisms --- aquatic systems --- Zgounder mine --- silver --- tailings --- low-grade silver ores --- flotation --- mineralogical characterization --- mine waste --- management --- sustainability --- bibliometric analysis --- systematic review --- valorisation --- mine waste --- soil washing --- heap leaching --- dump leaching --- mine drainage --- remediation --- acid mine drainage --- geographical information systems --- paste pH --- siderite --- multivariate analysis --- spatial mapping --- iron ore tailings --- iron recovery --- concrete composite admixtures --- reuse --- rheology --- microstructure --- flow behavior --- cemented paste backfill --- mixing --- recovering alkali --- Bayer red mud --- reaction kinetics --- magnesium oxide --- hydrotalcite-like compounds --- sustainable development --- tailings management --- industrial ecology --- sustainable resource management --- mining waste --- circular economy --- mine waste --- tailings --- gravity separation --- stamp mill --- historic tailings --- metals --- exploration --- economic potential --- LIBS --- core scanner --- acid mine drainage --- alkaline amendments --- cementitious amendments --- kinetic testing --- Joutel mine --- environmental mineralogy --- exploration --- contaminant --- geochemical behavior --- acid mine drainage --- mine tailings --- sulfides --- gold reprocessing --- desulfurization --- flotation --- kinetic test --- mining and mineral processing waste (MMPW) --- anthropogenic mineral resources (AMR) --- long-term storage --- supergene processes --- environmental damage --- loss and lost profits --- AMR processing --- n/a

Alpine and Polar Treelines in a Changing Environment

Author:
ISBN: 9783039286300 / 9783039286317 Year: Pages: 268 DOI: 10.3390/books978-3-03928-631-7 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Botany
Added to DOAB on : 2020-06-09 16:38:57
License:

Loading...
Export citation

Choose an application

Abstract

Concerns have been raised with respect to the state of high-altitude and high-latitude treelines, as they are anticipated to undergo considerable modifications due to global changes, and especially due to climate warming. As high-elevation treelines are temperature-limited vegetation boundaries, they are considered to be sensitive to climate warming. As a consequence, in this future, warmer environment, an upward migration of treelines is expected because low air and root-zone temperatures constrain their regeneration and growth. Despite the ubiquity of climate warming, treeline advancement is not a worldwide phenomenon: some treelines have been advancing rapidly, others have responded sluggishly or have remained stable. This variation in responses is attributed to the potential interaction of a continuum of site-related factors that may lead to the occurrence of locally conditioned temperature patterns. Competition amongst species and below-ground resources have been suggested as additional factors explaining the variability in the movement of treelines. This Special Issue (book) is dedicated to the discussion of treeline responses to changing environmental conditions in different areas around the globe.

Keywords

Changbai Mountain --- Erman’s birch --- microsite --- alpine treeline --- non-structural carbohydrates (NSCs) --- treeline --- climate change --- ecosystem manipulation --- space-for-time substitution --- long-term trends --- Central Austrian Alps --- 15N natural abundance --- nitrogen cycling --- treeline --- shrubline --- altitude --- light quantity --- light quality --- spectrometer --- shoot elongation --- tree seedlings --- forest climatology --- Switzerland --- temperature --- relative air humidity --- thermal continentality --- foehn winds --- expert elicitation --- knowledge engineering --- apical control --- multi-stemmed growth form --- Pinus cembra --- treeline --- climate change --- experimental rain exclusion --- plant water availability --- soil drought --- treeline --- sap flow --- Picea abies --- Larix decidua --- drought --- Mediterranean climate --- photoinhibition --- photosynthetic pigments --- tocopherol --- climate change --- climate zone --- environmental stress --- forest edge --- precipitation --- tree regeneration --- tree seedling recruitment --- upward advance --- alpine timberline --- conifer shrub --- pit aspiration --- refilling --- winter stress --- xylem embolism --- tree line --- sub-Antarctic --- westerly winds --- postglacial --- Holocene --- Southern Ocean --- climate change --- palynology --- cloud --- peat --- dendroclimatology --- elevational gradients --- drought --- western Montana --- Rocky Mountains --- treeline --- climate change --- fungal ecology --- diversity --- monitoring --- NDVI --- permafrost --- remote sensing data --- history of treeline research --- elevational treeline --- polar treeline --- treeline dynamics --- timberline --- higher altitude --- chlorophyll --- carotenoids --- climate change --- Pinus sibirica --- Abies sibirica --- elevational transect --- basal area increment --- climate warming --- conifers --- European Alps --- growth trend --- n/a

Analysis for Power Quality Monitoring

Authors: ---
ISBN: 9783039281107 / 9783039281114 Year: Pages: 210 DOI: 10.3390/books978-3-03928-111-4 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-06-09 16:38:57
License:

Loading...
Export citation

Choose an application

Abstract

We are immersed in the so-called digital energy network, continuously introducing new technological advances for a better way of life. Numerous emerging words are in the spotlight, namely: Internet of Things (IoT), Big Data, Smart Cities, Smart Grid, Industry 4.0, etc. To achieve this formidable goal, systems should work more efficiently, and this fact inevitably leads to power quality (PQ) assurance. Apart from its economic losses, a bad PQ implies serious risks for machines, and consequently for people. Many researchers are endeavoring to develop new analysis techniques, instruments, measurement methods, and new indices and norms that match and fulfil the requirements regarding the current operation of the electrical network. This book offers a compilation of the some recent advances in this field. The chapters range from computing issues to technological implementations, going through event detection strategies and new indices and measurement methods that contribute significantly to the advancement of PQ analysis. Experiments have been developed within the frames of research units and projects, and deal with real data from industry and public buildings. Human beings have an unavoidable commitment with sustainability, which implies adapting PQ monitoring techniques to our dynamic world, defining a digital and smart concept of quality for electricity.

Keywords

power system measurements --- dynamic phasor estimation --- Kalman filters --- phasor measurement --- power quality --- signal waveform compression --- higher-order statistics (HOS) --- power quality (PQ) --- computational solutions for advanced metering infrastructure (AMI) --- smart grid (SG) applications --- harmonics --- constant amplitude trend --- fourth-order statistics --- detection --- spectral kurtosis --- low-voltage DC networks --- power quality disturbances --- power quality monitoring --- DC power quality indices --- voltage ripple --- reconfigurable computing --- FPGA --- power quality --- spectral kurtosis --- digital signal processing --- embedded system --- power quality disturbance --- convolution neural network --- improved principal component analysis --- wind-grid distribution --- power quality (PQ) --- embedded microcontroller --- low cost monitor --- sensor node --- wireless sensor network --- IoT --- RMS voltage estimation --- low computational cost --- limited resources hardware --- power event detection --- energizing warning --- power quality --- voltage sags --- islanding operation --- induction machines --- modelling --- distribution networks --- power quality --- phasor measurement units --- voltage fluctuations --- flicker --- modulation --- power distribution systems --- smart grids --- dense-mesh topology --- municipal distribution network --- smart grid --- power quality monitor --- long-term --- operation analysis --- power quality (PQ) --- PQ indices and thresholds --- reliability --- sensors and instruments for PQ --- big data --- machine learning --- soft computing --- statistical signal processing --- data scalability --- data compression

Human Health Engineering

Author:
ISBN: 9783039284085 9783039284092 Year: Pages: 428 DOI: 10.3390/books978-3-03928-409-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-04-07 23:07:09
License:

Loading...
Export citation

Choose an application

Abstract

In this Special Issue on human health engineering, we invited submissions exploring recent contributions to the field of human health engineering, which is the technology used for monitoring the physical or mental health status of individuals in a variety of applications. Contributions focused on sensors, wearable hardware, algorithms, or integrated monitoring systems. We organized the different papers according to their contributions to the main aspects of the monitoring and control engineering scheme applied to human health applications, including papers focusing on measuring/sensing physiological variables, contributions describing research on the modelling of biological signals, papers highlighting health monitoring applications, and finally examples of control applications for human health. In comparison to biomedical engineering, the field of human health engineering also covers applications on healthy humans (e.g., sports, sleep, and stress) and thus not only contributes to develop technology for curing patients or supporting chronically ill people, but also more generally for disease prevention and optimizing human well-being.

Keywords

artefact correction --- head-shaped phantom --- spherical phantom --- gradient artefact --- simultaneous EEG–fMRI --- calcaneal spur --- pain minimum compressive pressure --- contour of shoe insole --- insole foot area --- health information --- interface formats --- older adults --- wearable devices --- usability --- emotional reaction --- ADHD --- screening --- machine learning --- SVM --- children --- novel --- nomophobia --- anxiety --- smartphone --- internet --- cyberaddiction --- new technologies --- chronic obstructive pulmonary disease --- COPD --- oxygen uptake --- VO2 --- kinetics --- exercise testing --- rehabilitation robotics --- soft walking assistive robot --- long-term effect --- gait characteristics --- elderly person --- blood pressure estimation --- photoplethysmogram --- pulse wave --- pulse oximeter --- wearable device --- Kano-TRIZ design theory --- quality function deployment --- four-wheeled rollator --- model predictive control --- orthosis control --- muscle modeling --- arm --- Hill muscle --- swarm optimization --- pneumatic artificial muscle --- sliding mode control --- fractional calculus --- antagonistic actuator --- weight loss --- mHealth --- dynamic model --- adaptive control --- spirometry --- airflow limitation --- airway resistance --- specific airway conductance --- COPD --- body-plethysmography --- forced expiration --- alveolar pressure --- emphysema --- computed tomography --- air-trapping --- thermal comfort --- bicycle helmet --- smart wearables --- adaptive model --- streaming data --- thermal sensation --- adaptive model --- personalized model --- machine leaning --- support-vector-machine --- adaptive control --- streaming algorithm --- thermoregulation --- homeostasis --- cold-induced-vasodilation --- cold-induced-vasoconstriction --- control system --- dynamic modelling --- powered mobility --- dyskinetic cerebral palsy --- dystonia --- choreoathetosis --- mobility scale --- movement disorder --- children --- youth --- reliability --- validity --- feature engineering --- intensive care unit --- mortality prediction --- hard-margin support vector machines --- driver drowsiness --- thermoregulation --- distal skin temperature --- decision tree --- heart model --- Van der Pol --- FitzHugh–Nagumo --- relaxation oscillator --- electrocardiographic signal --- bicycle helmets --- thermal manikin --- convective and evaporative heat loss --- zonal performance characteristics --- freestyle skiing aerials --- knee joint --- ligament --- finite element simulation --- lifting technique --- stoop --- squat --- work-related musculoskeletal disorders --- musculoskeletal modeling --- spine --- shoulder --- back loading --- harmonization --- meta-analysis --- missing data --- multiple imputations --- information technology --- remoteness --- cohort studies --- control parameter reference --- stance assistance --- magnetorheological brake --- body mass index --- walking speed --- ankle torque --- ankle angular velocity --- n/a

Intelligent Imaging and Analysis

Authors: ---
ISBN: 9783039219209 9783039219216 Year: Pages: 492 DOI: 10.3390/books978-3-03921-921-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-04-07 23:07:08
License:

Loading...
Export citation

Choose an application

Abstract

Imaging and analysis are widely involved in various research fields, including biomedical applications, medical imaging and diagnosis, computer vision, autonomous driving, and robot controls. Imaging and analysis are now facing big changes regarding intelligence, due to the breakthroughs of artificial intelligence techniques, including deep learning. Many difficulties in image generation, reconstruction, de-noising skills, artifact removal, segmentation, detection, and control tasks are being overcome with the help of advanced artificial intelligence approaches. This Special Issue focuses on the latest developments of learning-based intelligent imaging techniques and subsequent analyses, which include photographic imaging, medical imaging, detection, segmentation, medical diagnosis, computer vision, and vision-based robot control. These latest technological developments will be shared through this Special Issue for the various researchers who are involved with imaging itself, or are using image data and analysis for their own specific purposes.

Keywords

image inspection --- non-referential method --- feature extraction --- fault pattern learning --- weighted kernel density estimation (WKDE) --- rail surface defect --- UAV image --- defect detection --- gray stretch maximum entropy --- image enhancement --- defect segmentation --- semi-automatic segmentation --- MR spine image --- vertebral body --- graph-based segmentation --- correlation --- surface defect of steel sheet --- image segmentation --- saliency detection --- low-rank and sparse decomposition --- intervertebral disc --- segmentation --- convolutional neural network --- fine grain segmentation --- U-net --- deep learning --- magnetic resonance image --- lumbar spine --- image adjustment --- colorfulness --- contrast --- sharpness --- high dynamic range --- local registration --- iterative closest points --- multimodal medical image registration --- machine vision --- point cloud registration --- greedy projection triangulation --- local correlation --- three-dimensional imaging --- optimization arrangement --- cavitation bubble --- water hydraulic valve --- defect inspection --- image processing --- feature extraction --- classification methods --- medical image registration --- image alignment in medical images --- misalignment correction in MRI --- midsagittal plane extraction --- symmetry detection --- PCA --- conformal mapping --- mesh parameterization --- mesh partitioning --- pixel extraction --- texture mapping --- image analysis --- image retrieval --- spatial information --- image classification --- computer vision --- image restoration --- motion deburring --- image denoising --- sparse feedback --- Image processing --- segmentation --- spline --- grey level co-occurrence matrix --- gradient detection --- threshold selection --- OpenCV --- machine learning --- transfer learning --- Inception-v3 --- geological structure images --- convolutional neural networks --- image segmentation --- active contour model --- level set --- signed pressure force function --- image segmentation --- deep learning --- synthetic aperture radar (SAR) --- oil slicks --- segnet --- pectus excavatum --- nuss procedure --- patient-specific nuss bar --- minimally invasive surgery --- computerized numerical control bending machine --- computer-aided design --- computer-aided manufacturing --- statistical body shape model --- self-intersection penalty term --- 3D pose estimation --- 3D semantic mapping --- incrementally probabilistic fusion --- CRF regularization --- road scenes --- deep learning --- medical image classification --- additional learning --- CT image --- automatic training --- GoogLeNet --- intelligent evaluation --- automated cover tests --- deviation of strabismus --- pupil localization --- shape from focus --- wear measurement --- sprocket teeth --- normal distribution operator image filtering --- adaptive evaluation window --- reverse engineering --- human parsing --- depth-estimation --- computational efficiency --- capacity optimization --- underwater visual localization method --- line segment features --- PL-SLAM --- face sketch synthesis --- face sketch recognition --- joint training model --- data imbalance --- Contrast Tomography (CT) --- pre-training strategy --- segmentation --- super-resolution --- dual-channel --- residual block --- convolutional kernel parameter --- long-term and short-term memory blocks --- n/a

Listing 1 - 9 of 9
Sort by
Narrow your search