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  • 1
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Physical geology. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (486 pages)
    Edition: 1st ed.
    ISBN: 9780080869063
    Series Statement: Issn Series ; v.Volume 7
    Language: English
    Note: Front Cover -- Developments and Interactions of the Precambrian Atmosphere, Lithosphere and Biosphere -- Copyright Page -- CONTENTS -- Foreword -- Preface -- Preface -- Chapter 1. Oxygen and ozone in the early Earth's atmosphere -- Chapter 2. Photochemistry of methane in the Earth's early atmosphere -- Chapter 3. Proterozoic aeolian quartz arenites from the Hornby Bay Group, Northwest Territories, Canada: implications for Precambrian aeolian processes -- Chapter 4. Precambrian atmospheric oxygen and banded iron formations: a delayed ocean model -- Chapter 5. Tectonic systems and the deposition of iron-formation -- Chapter 6. Archaean chemical weathering at three localities on the Canadian Shield -- Chapter 7. Pedogenetic and diagenetic fabrics in the Upper Proterozoic Sarnyéré formation -- Chapter 8. Rare earth elements in the early Archaean Isua iron-formation, West Greenland -- Chapter 9. Primitive Earth environments: organic syntheses and the origin and early evolution of life -- Chapter 10. Natural nuclear reactors and ionizing radiation in the Precambrian -- Chapter 11. Evolutionary connections of biological kingdoms based on protein and nucleic acid sequence evidence -- Chapter 12. Evolution of photoautotrophy and early atmospheric oxygen levels -- Chapter 13. Further sulphur and carbon isotope studies of late Archaean iron-formations of the Canadian shield and the rise of sulfate reducing bacteria -- Chapter 14. Filamentous fossil bacteria from the Archaean of Western Australia -- Chapter 15. Pseudo-oolites in rocks of the Ulundi Formation, lower part of the Archaen Fig Tree Group (South Africa) -- Chapter 16. Sedimentary geology and stromatolites of the Middle Proterozoic Belt Supergroup, Glacier National Park, Montana -- Chapter 17. The emergence of Metazoa in the early history of life. , Chapter 18. Distinctive microbial structures and the pre-Phanerozoic fossil record -- Chapter 19. Fine structure of the stratified microbial community at Laguna Figueroa, Baja California, Mexico.I, Methods of in situ study of the laminated sediments -- Chapter 20. Stromatolites -the challenge of a term in space and time -- Chapter 21. Stratiform copper deposits and interactions with co-existing atmospheres,hydrospheres, biospheres and lithospheres -- Chapter 22. Origin and distribution of gold in the Huronian Supergroup, Canada -The case for Witwatersrand-type paleoplacers.
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  • 2
    Online Resource
    Online Resource
    Ciudad de México :Universidad Nacional Autonoma de Mexico, Instituto de Investigaciones sobre la Universidad y la Educacion,
    Keywords: Science. ; Spanish language materials. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (101 pages)
    Edition: 2nd ed.
    ISBN: 9786070265570
    Series Statement: ¿Cómo Ves? Series
    DDC: 500
    Language: Spanish
    Note: Intro -- Introducción -- Las ciencias -- El conocimiento científico es objetivo -- El conocimiento científico es causal -- El conocimiento científico busca regularidades -- Las ciencias son experimentales… la mayoría de las veces -- Las ciencias son experimentales… la mayoría de las veces -- El conocimiento científico es tentativo -- El conocimiento científico está limitado por la sociedad en la que se desarrolla -- Los tres grandes temas de la ciencia -- La materia -- El tiempo -- Las sociedades humanas -- Epílogo -- Las ciencias son parsimoniosas -- Notas -- 1. Toxicidad -- 2. Jean Perrin y el movimiento browniano -- 3. Isaac Newton -- 4. Instrumentos y descubrimientos -- 5. Publicaciones de las ciencias -- 6. Experimento de Urey-Miller -- 7. Ciencias y tecnologías… ¿tecnociencias? -- 8. Genética vs. cultura -- Apéndices -- 1. Algunas preguntas en busca de respuesta -- 2. Algunas características de las ciencias -- Los modelos -- Algunas predicciones derivadas de modelos usados en los grandes temas de materia, tiempo y sociedad -- Algunas respuestas basadas en observaciones y experimentos -- 3. Otras características, o mejor dicho, y perdonando la ligereza, "anticaracterísticas" de las ciencias -- Las ciencias no son democráticas -- Las ciencias no dependen de la cantidad de dinero de una sociedad -- Las ciencias no tienen más autoridad que el propio conocimiento -- Las ciencias no se construyen por decreto de un día para otro -- Las ciencias no son ni la anciana ni la joven de la portada -- Bibliografía -- Lecturas recomendadas -- Aviso Legal.
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  • 3
    Keywords: Neural networks (Computer science)-Congresses. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (347 pages)
    Edition: 1st ed.
    ISBN: 9783030196424
    Series Statement: Advances in Intelligent Systems and Computing Series ; v.976
    DDC: 006.32
    Language: English
    Note: Intro -- Preface -- Organization -- Steering Committee -- Program Committee -- Contents -- Self-organizing Maps: Theoretical Developments -- Look and Feel What and How Recurrent Self-Organizing Maps Learn -- 1 Introduction -- 2 Methods -- 2.1 Algorithm -- 2.2 Representations -- 2.3 Evaluation -- 3 Results -- 3.1 Ambiguous Observations -- 3.2 Long Term Dependencies -- 3.3 Adapting to a Changing Dynamics -- 3.4 Noisy Observations -- 3.5 Perturbed by a Noise State -- 4 Conclusion -- References -- Self-Organizing Mappings on the Flag Manifold -- 1 Introduction -- 2 Introduction to Flag Manifold with Data Analysis Examples -- 3 Numerical Representation and Geodesics -- 3.1 Flag Manifold -- 3.2 Geodesic and Distance Between Two Points on Flag Manifold -- 3.3 Iterative Alternating Algorithm -- 4 SOM on Flag Manifolds -- 4.1 Numerical Experiment -- 5 Conclusions and Future Work -- References -- Self-Organizing Maps with Convolutional Layers -- 1 Introduction -- 2 Self-Organizing Maps -- 3 Related Work -- 4 Convolutional Layers -- 5 SOM with Convolutional Layers -- 6 Quality Measures -- 6.1 Kruskal Shepard Error -- 6.2 Cross Entropy -- 6.3 Minor Class Occurrence -- 6.4 Class Scatter Index -- 7 Experimental Analysis -- 7.1 Experimental Settings -- 7.2 Quality Measure Results -- 7.3 Visualization Results -- 8 Conclusion -- References -- Cellular Self-Organising Maps - CSOM -- 1 Introduction -- 2 Self-Organising Maps: SOM and Cellular SOM -- 2.1 SOM: Self-Organising Maps -- 2.2 CSOM: Cellular Self-Organising Maps -- 2.3 Algorithms -- 3 Experimental Setup and Results -- 3.1 Quantisation of Artificial d-dimensional Distributions -- 3.2 Video Compression -- 4 Conclusion -- References -- A Probabilistic Method for Pruning CADJ Graphs with Applications to SOM Clustering -- 1 Introduction: The CADJ Graph -- 2 A Probabilistic Model for CADJ -- 3 A Multi-focal View. , 4 The Metric -- 5 Ranking Connections for Removal -- 6 Clustering Applications -- 6.1 6d Synthetic Spectral Image -- 6.2 Real Data: Ocean City Spectral Image -- 7 Conclusions and Outlook -- References -- Practical Applications of Self-Organizing Maps, Learning Vector Quantization and Clustering -- SOM-Based Anomaly Detection and Localization for Space Subsystems -- Abstract -- 1 Introduction -- 2 Related Work -- 3 Self-Organizing Map Background -- 4 Methods -- 4.1 Data Processing -- 4.2 Anomaly Detection via MQE -- 4.3 Anomaly Localization via Supervised Feature Extraction -- 5 Experiments and Discussion -- 5.1 Data Collection -- 5.2 Anomaly Detection Analysis -- 5.3 Anomaly Localization Analysis -- 6 Conclusions and Future Work -- References -- Self-Organizing Maps in Earth Observation Data Cubes Analysis -- 1 Introduction -- 2 Land Use and Cover Change Information from Earth Observation Data Cubes -- 2.1 Earth Observation Satellite Image Time Series -- 2.2 Vegetation Indexes -- 2.3 Using SOM to Improve the Quality of Land Use and Cover Samples -- 3 Case Study -- 4 Final Remarks -- References -- Competencies in Higher Education: A Feature Analysis with Self-Organizing Maps -- Abstract -- 1 Introduction -- 2 State of the Art -- 3 Materials and Methods -- 3.1 Training Dataset -- 3.2 Clustering Students and Obtaining Main Features -- 4 Results -- 5 Conclusions and Future Works -- References -- Using SOM-Based Visualization to Analyze the Financial Performance of Consumer Discretionary Firms -- Abstract -- 1 Introduction -- 2 Literature Review -- 3 Methodology -- 4 Results -- 5 Discussion -- 6 Conclusion -- References -- Novelty Detection with Self-Organizing Maps for Autonomous Extraction of Salient Tracking Features -- 1 Introduction -- 2 Image Representation with SOM -- 2.1 Self-Organizing Maps -- 2.2 Image Representation -- 3 Dynamic Neural Fields. , 4 Our Tracking Application -- 5 Results -- 6 Conclusion -- References -- Robust Adaptive SOMs Challenges in a Varied Datasets Analytics -- Abstract -- 1 Introduction -- 2 SOM Algorithm -- 3 RA-SOM Algorithm -- 4 Simulation Results -- 4.1 Balance Dataset -- 4.2 Dermatology Dataset -- 4.3 Arcene Dataset -- 4.4 Gisette Dataset -- 5 Conclusion and Future Work -- References -- Detection of Abnormal Flights Using Fickle Instances in SOM Maps -- 1 Introduction -- 2 The Data -- 3 First Level of Labeling -- 4 Two-Levels Clustering and Resulting Labels -- 5 Dissimilarity Matrix and Relational SOM -- 5.1 Substitutions Costs -- 5.2 Adding Costs and Deletion Costs -- 6 Clustering the Labeled Sequences and Identifying Fickle Flights -- 7 Conclusion -- References -- LVQ-type Classifiers for Condition Monitoring of Induction Motors: A Performance Comparison -- 1 Introduction -- 2 Basics of Cluster Validation Techniques -- 2.1 Cluster Validity Indices -- 3 Prototype-Based Classifiers -- 3.1 LVQ Classifiers -- 4 Results and Discussion -- 5 Conclusions and Further Work -- References -- When Clustering the Multiscalar Fingerprint of the City Reveals Its Segregation Patterns -- 1 Introduction -- 2 Building a Multiscalar Fingerprint of the City -- 3 Focal Distances and Distortion Coefficients -- 4 Clustering Trajectories -- 4.1 Defining Contrasts and Indices of Features Importance -- 4.2 Five hotspots of Segregation for the City of Paris -- 5 Conclusion and Perspectives -- References -- Using Hierarchical Clustering to Understand Behavior of 3D Printer Sensors -- Abstract -- 1 Introduction -- 1.1 3D Printing Overview -- 1.2 Data Collection and Parsing -- 1.3 Data Preprocessing -- 2 Statistical Clustering Method -- 3 Interpretation of Clusters -- 3.1 Analysis of Conditional Distributions Versus Classes -- 3.2 Detection of Non-informative and Redundant Variables. , 3.3 Pattern Conceptualization -- 4 Conclusion -- References -- A Walk Through Spectral Bands: Using Virtual Reality to Better Visualize Hyperspectral Data -- 1 Introduction -- 2 Background -- 2.1 Hyperspectral Data -- 2.2 Virtual Reality for Data Visualization -- 3 Example Visualizations -- 3.1 Indian Pines -- 3.2 Chemical Plume Detection -- 4 Conclusion -- References -- Incremental Traversability Assessment Learning Using Growing Neural Gas Algorithm -- 1 Introduction -- 2 Problem Specification -- 3 Evaluation Results -- 4 Conclusion -- References -- Learning Vector Quantization: Theoretical Developments -- Investigation of Activation Functions for Generalized Learning Vector Quantization -- 1 Introduction -- 2 Generalized Learning Vector Quantization - A Multilayer Network Perspective -- 2.1 Basics of GLVQ -- 2.2 GLVQ - A Neural Network Perspective -- 2.3 Activation Function for MLP and GLVQ-MLN -- 3 Numerical Results for Activation Functions in GLVQ -- 3.1 Data Sets -- 3.2 Results -- 4 Conclusions -- References -- Robustness of Generalized Learning Vector Quantization Models Against Adversarial Attacks -- 1 Introduction -- 2 Learning Vector Quantization -- 3 Experimental Setup -- 3.1 Adversarial Attacks -- 3.2 Robustness Metrics -- 3.3 Training Setup and Models -- 4 Results -- 5 Conclusion -- References -- Passive Concept Drift Handling via Momentum Based Robust Soft Learning Vector Quantization -- 1 Introduction -- 2 Related Work -- 3 Streaming Data and Concept Drift -- 3.1 Concept Drift -- 4 Robust Soft Learning Vector Quantization -- 4.1 Momentum Based Optimization -- 5 Experiments -- 5.1 Results -- 6 Conclusion -- References -- Prototype-Based Classifiers in the Presence of Concept Drift: A Modelling Framework -- 1 Introduction -- 2 Models and Methods -- 2.1 Learning Vector Quantization -- 2.2 The Dynamics of LVQ. , 2.3 LVQ Dynamics Under Concept Drift -- 3 Results and Discussion -- 4 Summary and Outlook -- References -- Theoretical Developments in Clustering, Deep Learning and Neural Gas -- Soft Subspace Topological Clustering over Evolving Data Stream -- 1 Introduction -- 2 Model Proposition -- 3 Experimental Evaluation -- 4 Conclusion -- References -- Solving a Tool-Based Interaction Task Using Deep Reinforcement Learning with Visual Attention -- 1 Introduction -- 2 Reinforcement Learning -- 2.1 The REINFORCE Algorithm -- 3 The RAA3C MODEL -- 3.1 The Location Network -- 3.2 Glimpse Network -- 3.3 Context Network -- 3.4 The Actor-Critic Network -- 3.5 Training -- 4 Learning Domain -- 5 Experiments/Results -- 6 Conclusion -- References -- Approximate Linear Dependence as a Design Method for Kernel Prototype-Based Classifiers -- 1 Introduction -- 2 Basics of Prototype-Based Classification -- 2.1 Kernel Functions -- 3 The Proposed Approach -- 4 Results and Discussion -- 4.1 Initial Tests -- 4.2 More General Tests -- 5 Conclusions and Further Work -- References -- Subspace Quantization on the Grassmannian -- 1 Introduction -- 2 The Grassmannian -- 3 Averaging Subspaces -- 4 Grassmann K-means Algorithm -- 5 The LBG Algorithm on the Grassmannian -- 6 Numerical Experiments -- 6.1 MNIST Results -- 6.2 Indian Pines Results -- 7 Conclusions -- References -- Variants of Fuzzy Neural Gas -- 1 Introduction -- 2 Interpretation of Distance for Different Types of Data -- 3 Possibilistic Fuzzy c-Means -- 4 Possibilistic Fuzzy Neural Gas -- 4.1 Vectorial Data -- 4.2 Relational Data -- 4.3 Median Data -- 4.4 Remarks -- 5 Experiments -- 5.1 Artificial Gaussian Distributions -- 5.2 Clustering Transcripts of Psychotherapy Sessions -- 6 Conclusion -- References -- Autoencoders Covering Space as a Life-Long Classifier -- 1 Introduction -- 2 Related Work -- 3 Analysis -- 4 Method. , 5 Results.
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food biochemistry 23 (1999), S. 0 
    ISSN: 1745-4514
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The composition of tender leaves from five species of the family Cruciferae (Alliaria petiolata, Cardaria draba, Cakile maritima, Capsella bursa-pastoris and Sisymbrium irio)from different locations of the southeast of Spain (Almeria) was investigated. The proximate composition, mineral elements (Na, K, Ca, Mg, P, Fe, Cu, Zn and Mn), fatty acids, vitamin C, carotenoids and oxalic acid contents were determined. The available carbohydrate contents ranged from 1.4% - 8.2%. Vitamin C contents were high, specially in Alliaria petiolata (261 mg/100 g). Carotenoid content was relatively high in Alliaria petiolata (13.3 mg). Mineral elements were present at higher concentrations than is common for other green leafy vegetables. Fiber amounts were also remarkable (1.96–5.38 g/100 g). The ω3 series of fatty acids were predominant in the three species (Capsella bursa-pastoris 54.02%). Oxalic acid values and ratios of oxalic acid/Ca were moderate, being higher in C. maritima. We believe that thesespecies of crucifers could be used for dietary purposes, due to the amount and diversity of nutrients they contain.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1745-4530
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The onset glass transition temperature (Tgo) of Granny Smith apple products was evaluated as a function of drying conditions (air drying and freeze-drying) and moisture and water activity (aw) levels. Tgo was determined in the 0–0.75 aw range, and it was found to have a maximum value at aw= 0 (Tgo= 4.5 ± 1.6C) for freeze-dried apple and a minimum value at aw= 0.75 (Tgo= -81.4 ± 0.1C) for freeze-dried apple juice. A linear relationship between Tgo and aw was obtained in all cases. Theoretical Tgo values at aw= 0 were calculated using these equations, and were within the range of 3.0C (freeze-dried apple) and 10.5C (apple dehydrated at 30C). When Gordon and Taylor's linear model was applied to the experimental data of all the apple products, K values within the range 2.4 (freeze-dried apple juice) and 3.6 (apple dehydrated at 60C), and the theoretical Tg of solids values at aw= 0 between the range -16.3C (freeze-dried apple juice) and -1.9C (apple dehydrated at 60C) were obtained. No effect of the type of drying on the value of Tg was detected.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European food research and technology 209 (1999), S. 313-316 
    ISSN: 1438-2385
    Keywords: Key words Omega 3 fatty acids ; Omega 6 fatty acids ; Linoleic acid ; Linolenic acid ; Wild edible plant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  α-Linolenic acid and unusual fatty acids of the ω3 and ω6 series play an important role in the modulation of human metabolism. The presence of these acids in the leaves of several edible wild plants has recently been reported. In this study, six edible wild species were selected in order to establish the fatty acid compositions in their leaf lipids. Thus, young leaves from Amaranthus viridis L.(blet), Chenopodium album L. (goosefoot), Crithmum maritimum L. (rock samphire), Plantago major L. (plantain), Portulaca oleracea L. (purslane) and Verbena officinalis L. (vervain) yielded 1.50, 2.20, 3.02, 1.46, 3.81, and 2.28 g of lipids per 100 g dry plant material. Silica gel chromatography yielded 0.64 g (Plantago major) to 2.19 g (Crithmum maritimum) neutral lipids, 0.37 g (Plantago major) to 1.60 g (Portulaca oleracea) glycolipids, and 0.26 g (Crithmum maritimum) to 0.57 g (Verbena officinalis) phospholipids per 100 g (dry weight). Gas chromatography (GC) showed the major fatty acids to be 18 : 3ω3, 18 : 2ω6 and 16 : 0 in all fractions, with high concentrations of 18 : 3ω3 in the glycolipid fraction. GC-mass spectrometric analyses did not reveal the presence of unusual fatty acids. Carotenes were found in high concentrations, ranging from 30.5 mg/100 g (Chenopodium album) to 89.2 mg/100 g (Portulaca oleracea). The analyzed plants are rich sources of essential fatty acids (18 : 2ω6 and 18 : 3ω3) and also of carotenes.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sill intrusions into highly porous sediments in the Guaymas Basin, Gulf of California, lead to low-grade metamorphism, thermal alteration and migration of organic compounds, marked changes in interstitial water chemistry, and large-scale expulsion of heated pore fluids. The latter process creates ...
    Type of Medium: Electronic Resource
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  • 8
    Publication Date: 2013-08-02
    Description: Journal of Chemical Information and Modeling DOI: 10.1021/ci400263t
    Topics: Chemistry and Pharmacology
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  • 9
    Publication Date: 2018-01-19
    Description: Sensors, Vol. 18, Pages 271: Smart Device-Based Notifications to Promote Healthy Behavior Related to Childhood Obesity and Overweight Sensors doi: 10.3390/s18010271 Authors: Gustavo López Iván González Elitania Jimenez-Garcia Jesús Fontecha Jose Brenes Luis Guerrero José Bravo Obesity is one of the most serious public health challenges of the 21st century and it is a threat to the life of people according to World Health Organization. In this scenario, family environment is important to establish healthy habits which help to reduce levels of obesity and control overweight in children. However, little efforts have been focused on helping parents to promote and have healthy lifestyles. In this paper, we present two smart device-based notification prototypes to promote healthy behavior with the aim of avoiding childhood overweight and obesity. The first prototype helps parents to follow a healthy snack routine, based on a nutritionist suggestion. Using a fridge magnet, parents receive graphical reminders of which snacks they and their children should consume. The second prototype provides a graphical reminder that prevents parents from forgetting the required equipment to practice sports. Prototypes were evaluated by nine nutritionists from three countries (Costa Rica, Mexico and Spain). Evaluations were based on anticipation of use and the ergonomics of human–system interaction according to the ISO 9241-210. Results show that the system is considered useful. Even though they might not be willing to use the system, they would recommend it to their patients. Based on the ISO 9241-210 the best ranked features were the system’s comprehensibility, the perceived effectiveness and clarity. The worst ranked features were the system’s suitability for learning and its discriminability.
    Electronic ISSN: 1424-8220
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Published by MDPI Publishing
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