Artículos científicos

EL OBJETIVO DEL PRESENTE ESTUDIO FUE REALIZAR UN ANÁLISIS BIBLIOMÉTRICO DE PSYKHE (1992-2016), CONSIDERANDO ALGUNOS ELEMENTOS HISTÓRICOS QUE CONTEXTUALIZAN SU TRAYECTORIA, PARA DESCRIBIR SUS PRINCIPALES CARACTERÍSTICAS Y EVALUAR SU EVOLUCIÓN CRONOLÓGICA. PARA ELLO SE CONSTRUYÓ UNA BASE DE DATOS CON LA TOTALIDAD DE PUBLICACIONES DE LA REVISTA (25 VOLÚMENES Y 48 NÚMEROS), CON UNA MUESTRA TOTAL DE 531 ARTÍCULOS CIENTÍFICOS. SE APLICARON INDICADORES BIBLIOMÉTRICOS, TALES COMO LOS ÍNDICES DE PRODUCTIVIDAD (LOTKA), DE COLABORACIÓN (SUBRAMANYAM Y LAWANI), DE TEMÁTICAS Y METODOLOGÍAS UTILIZADAS, ASÍ COMO INDICADORES DE IMPACTO QUE PERMITEN REALIZAR COMPARACIONES CON OTRAS REVISTAS DE REFERENCIA EN LA REGIÓN. LOS RESULTADOS EVIDENCIAN QUE LA PRIMERA AUTORÍA DE LOS ARTÍCULOS CORRESPONDIÓ A UNA MAYOR PROPORCIÓN DE MUJERES. SE VISLUMBRA UNA CLARA TENDENCIA AL ALZA DEL NÚMERO DE ARTÍCULOS A MEDIADOS DE LOS AÑOS 2000, EL ÁREA TEMÁTICA CON MAYOR NÚMERO DE ARTÍCULOS ES PSICOLOGÍA EDUCACIONAL Y LOS ÍNDICES DE COLABORACIÓN HAN MEJORADO SUSTANCIALMENTE HACIA LA ACTUALIDAD. EL ANÁLISIS PERMITE VISUALIZAR ALGUNAS DE LAS FORTALEZAS Y DESAFÍOS DE PSYKHE. SERÍA INTERESANTE EN FUTUROS ESTUDIOS REALIZAR COMPARACIONES CON OTRAS REVISTAS DE SIMILARES CARACTERÍSTICAS

INTRODUCTION: 5-A-SIDE SOCCER IS A SPORTS MODALITY EXCLUSIVELY FOR ATHLETES WITH VISION IMPAIRMENT (VI) CLASSIFIED AS BLIND - B1 (BLIND 1) BY THE VISUAL CLASSIFICATION PROCESS. TYPE OF IMPAIRMENT AND HIGH-PERFORMANCE TRAINING ARE FACTORS THAT CONTRIBUTE TO THE DEVELOPMENT OF SPORTS INJURIES. OBJECTIVE: THE PURPOSE OF THIS STUDY WAS TO CHARACTERIZE THE PREVALENCE OF SPORTS-RELATED INJURIES IN VISUALLY DISABLED ATHLETES OF THE BRAZILIAN 5-A-SIDE SOCCER TEAM. METHODS: THE METHOD WAS DEFINED AS A DESCRIPTIVE, LONGITUDINAL, EPIDEMIOLOGICAL STUDY. THE SAMPLE WAS COMPOSED OF TEN MALE ATHLETES, MEMBERS OF THE BRAZILIAN 5-A-SIDE SOCCER TEAM, INCLUDING TWO ATHLETES WITHOUT VI AND EIGHT ATHLETES WITH THE B1 VISUAL CLASSIFICATION, WHO PARTICIPATED IN COMPETITIONS IN 2014. THE QUESTIONNAIRE FOR THE DATA COLLECTION WAS BASED ON THE SPORT INJURIES PROTOCOL FOR PARALYMPIC SPORTS (PLEEP), EXPRESSING QUANTITATIVE DATA ANALYZED BY DESCRIPTIVE STATISTICS. RESULTS: THE RESULTS SHOWED THAT, IN 2014, FIVE ATHLETES WITH VI HAD SEVEN SPORTS INJURIES, WITH A PREVALENCE OF 62.5%, CLINICAL INCIDENCE OF 0.87 INJURIES PER ATHLETE PER YEAR, AND 1.4 INJURIES PER INJURED ATHLETE. THE MAIN SPORTS INJURIES WERE MUSCLE STRAIN (28.6%), GROIN PULL (ATHLETIC PUBALGIA) (28.6%), AND SHIN SPLINTS (PERIOSTITIS) (28.6%). ALL SPORTS INJURIES OCCURRED IN THE LOWER LIMBS, AFFECTING LEGS (71.4%) AND HIPS (28.6%). OVERLOAD WAS THE MOST FREQUENT MECHANISM (57%), REPORTED AFTER THE TECHNICAL KICK MOVEMENT AND LINKED TO THE MUSCLE IMBALANCE BETWEEN DOMINANT AND SUPPORTING LOWER LIMBS, IN ADDITION TO THE POSTURAL MISALIGNMENT TYPICAL OF PEOPLE WITH VISUAL IMPAIRMENTS. CONCLUSIONS: IN SUMMARY, THE BRAZILIAN 5-A-SIDE SOCCER ATHLETES PRESENTED A PATTERN OF OVERLOAD INJURIES RESULTING FROM THE REPETITION OF THE TECHNICAL KICK MOVEMENT, OCCURRING PREDOMINANTLY IN SPORTS COMPETITIONS. EPIDEMIOLOGICAL DATA CAN CONTRIBUTE TO THE DEVELOPMENT OF STRATEGIES TO PREVENT INJURIES IN THIS SPORT. LEVEL OF EVIDENCE II, PROGRESSIVE

IN THIS PAPER WE PROPOSE AND ANALYZE, UTILIZING MAINLY TOOLS AND ABSTRACT RESULTS FROM BANACH SPACES RATHER THAN FROM HILBERT ONES, A NEW FULLY-MIXED FINITE ELEMENT METHOD FOR THE STATIONARY BOUSSINESQ PROBLEM WITH TEMPERATURE-DEPENDENT VISCOSITY. MORE PRECISELY, FOLLOWING AN IDEA THAT HAS ALREADY BEEN APPLIED TO THE NAVIER-STOKES EQUATIONS AND TO THE FLUID PART ONLY OF OUR MODEL OF INTEREST, WE FIRST INCORPORATE THE VELOCITY GRADIENT AND THE ASSOCIATED BERNOULLI STRESS TENSOR AS AUXILIARY UNKNOWNS. ADDITIONALLY, AND DIFFERENTLY FROM EARLIER WORKS IN WHICH EITHER THE PRIMAL OR THE CLASSICAL DUAL-MIXED METHOD IS EMPLOYED FOR THE HEAT EQUATION, WE CONSIDER HERE AN ANALOGUE OF THE APPROACH FOR THE FLUID, WHICH CONSISTS OF INTRODUCING AS FURTHER VARIABLES THE GRADIENT OF TEMPERATURE AND A VECTOR VERSION OF THE BERNOULLI TENSOR. THE RESULTING MIXED VARIATIONAL FORMULATION, WHICH INVOLVES THE AFOREMENTIONED FOUR UNKNOWNS TOGETHER WITH THE ORIGINAL VARIABLES GIVEN BY THE VELOCITY AND TEMPERATURE OF THE FLUID, IS THEN REFORMULATED AS A FIXED POINT EQUATION. NEXT, WE UTILIZE THE WELL-KNOWN BANACH AND BROUWER THEOREMS, COMBINED WITH THE APPLICATION OF THE BABU$\CHECK{\MATHRM S}$KA-BREZZI THEORY TO EACH INDEPENDENT EQUATION, TO PROVE, UNDER SUITABLE SMALL DATA ASSUMPTIONS, THE EXISTENCE OF A UNIQUE SOLUTION TO THE CONTINUOUS SCHEME, AND THE EXISTENCE OF SOLUTION TO THE ASSOCIATED GALERKIN SYSTEM FOR A FEASIBLE CHOICE OF THE CORRESPONDING FINITE ELEMENT SUBSPACES.

IN THIS PAPER WE INTRODUCE AND ANALYZE A BANACH SPACES-BASED APPROACH YIELDING A FULLY-MIXED FINITE ELEMENT METHOD FOR NUMERICALLY SOLVING THE STATIONARY CHEMOTAXIS-NAVIER-STOKES PROBLEM. THIS IS A NONLINEAR COUPLED MODEL REPRESENTING THE BIOLOGICAL PROCESS GIVEN BY THE CELL MOVEMENT, DRIVEN BY EITHER AN INTERNAL OR AN EXTERNAL CHEMICAL SIGNAL, WITHIN AN INCOMPRESSIBLE FLUID. IN ADDITION TO THE VELOCITY AND PRESSURE OF THE FLUID, THE VELOCITY GRADIENT AND THE BERNOUILLI-TYPE STRESS TENSOR ARE INTRODUCED AS FURTHER UNKNOWNS, WHICH ALLOWS TO ELIMINATE THE PRESSURE FROM THE EQUATIONS AND COMPUTE IT AFTERWARDS VIA A POSTPROCESSING FORMULA. IN TURN, BESIDES THE CELL DENSITY AND THE CHEMICAL SIGNAL CONCENTRATION, THE PSEUDOSTRESS ASSOCIATED WITH THE FORMER AND THE GRADIENT OF THE LATTER ARE INTRODUCED AS AUXILIARY UNKNOWNS AS WELL. THE RESULTING CONTINUOUS FORMULATION, POSED IN SUITABLE BANACH SPACES, CONSISTS OF A COUPLED SYSTEM OF THREE SADDLE POINT-TYPE PROBLEMS, EACH ONE OF THEM PERTURBED WITH TRILINEAR FORMS THAT DEPEND ON DATA AND THE UNKNOWNS OF THE OTHER TWO. THE WELL-POSEDNESS OF IT IS ANALYZED BY MEANS OF A FIXED-POINT STRATEGY, SO THAT THE CLASSICAL BANACH THEOREM, ALONG WITH THE BABU?KA- BREZZI THEORY IN BANACH SPACES, ALLOW TO CONCLUDE, UNDER A SMALLNESS ASSUMPTION ON THE DATA, THE EXISTENCE OF A UNIQUE SOLUTION. ADOPTING AN ANALOGUE APPROACH FOR THE ASSOCIATED GALERKIN SCHEME, AND UNDER SUITABLE HYPOTHESES ON ARBITRARY FINITE ELEMENT SUBSPACES EMPLOYED, WE APPLY THE BROUWER AND BANACH THEOREMS TO SHOW EXISTENCE AND THEN UNIQUENESS OF THE DISCRETE SOLUTION. GENERAL A PRIORI ERROR ESTIMATES, INCLUDING THOSE FOR THE POSTPROCESSED PRESSURE, ARE ALSO DERIVED. NEXT, A SPECIFIC SET OF FINITE ELEMENT SUBSPACES SATISFYING THE REQUIRED STABILITY CONDITIONS, AND YIELDING APPROXIMATE LOCAL CONSERVATION OF MOMENTUM, IS INTRODUCED, WHICH, GIVEN AN INTEGER ? ? 0, IS DEFINED IN TERMS OF RAVIART-THOMAS SPACES OF ORDER ? AND PIECEWISE POLYNOMIALS OF DEGREE ? ? ONLY. THE RE

IN THIS PAPER WE CONSIDER A STRONGLY COUPLED FOW AND NONLINEAR TRANSPORT PROBLEM ARIS ING IN SEDIMENTATION-CONSOLIDATION PROCESSES IN RN , N ? {2, 3} , AND INTRODUCE AND ANA LYZE A BANACH SPACES-BASED VARIATIONAL FORMULATION YIELDING A NEW MIXED-PRIMAL FNITE ELEMENT METHOD FOR ITS NUMERICAL SOLUTION. THE GOVERNING EQUATIONS ARE DETERMINED BY THE COUPLING OF A BRINKMAN FOW WITH A NONLINEAR ADVECTION?DIFUSION EQUATION, IN ADDI TION TO DIRICHLET BOUNDARY CONDITIONS FOR THE FUID VELOCITY AND THE CONCENTRATION. THE APPROACH IS BASED ON THE INTRODUCTION OF THE CAUCHY FUID STRESS AND THE GRADIENT OF ITS VELOCITY AS ADDITIONAL UNKNOWNS, THUS YIELDING A MIXED FORMULATION IN A BANACH SPACES FRAMEWORK FOR THE BRINKMAN EQUATIONS, WHEREAS THE USUAL HILBERTIAN PRIMAL FORMULA TION IS EMPLOYED FOR THE TRANSPORT EQUATION. DIFERENTLY FROM PREVIOUS WORKS ON THIS AND RELATED PROBLEMS, NO AUGMENTED TERMS ARE INCORPORATED, AND HENCE, BESIDES BECOM ING FULLY EQUIVALENT TO THE ORIGINAL PHYSICAL MODEL, THE RESULTING VARIATIONAL FORMULATION IS MUCH SIMPLER, WHICH CONSTITUTES ITS MAIN ADVANTAGE, MAINLY FROM THE COMPUTATIONAL POINT OF VIEW. THE WELL-POSEDNESS OF THE CONTINUOUS FORMULATION IS ANALYZED FRSTLY BY REWRITING IT AS A FXED-POINT OPERATOR EQUATION, AND THEN BY APPLYING THE SCHAUDER AND BANACH THEOREMS, ALONG WITH THE BABU?KA-BREZZI THEORY AND THE LAX-MILGRAM LEMMA. AN ANALOGUE FXED-POINT STRATEGY IS EMPLOYED FOR THE ANALYSIS OF THE ASSOCIATED GALERKIN SCHEME, USING IN THIS CASE THE BROUWER THEOREM INSTEAD OF THE SCHAUDER ONE. THE RESULTING DISCRETE SCHEME BECOMES MOMENTUM CONSERVATIVE FOR THE FUID IN AN APPROXIMATE SENSE. NEXT, A STRANG-TYPE LEMMA AND SUITABLE ALGEBRAIC MANIPULATIONS ARE UTILIZED TO DERIVE THE A PRIORI ERROR ESTIMATES, WHICH, ALONG WITH THE APPROXIMATION PROPERTIES OF THE FNITE ELEMENT SUBSPACES, YIELD THE CORRESPONDING RATES OF CONVERGENCE. THE PAPER IS ENDED WITH SEVERAL NUMERICAL RESULTS ILLUSTRATING THE PERFORMANCE OF THE MIXED-PRIMAL SCHEME AND

THE ACINETOBACTER CALCOACETICUS?ACINETOBACTER BAUMANNII COMPLEX, OR ACB COMPLEX, CONSISTS OF SIX SPECIES: ACINETOBACTER BAUMANNII, ACINETOBACTER CALCOACETICUS, ACINETOBACTER NOSOCOMIALIS, ACINETOBACTER PITTII, ACINETOBACTER SEIFERTII, AND ACINETOBACTER LACTUCAE. A. BAUMANNII IS THE MOST CLINICALLY SIGNIFICANT OF THESE SPECIES AND IS FREQUENTLY RELATED TO HEALTHCARE-ASSOCIATED INFECTIONS (HCAIS). CLUSTERED REGULARLY INTERSPACED SHORT PALINDROMIC REPEAT (CRISPR) ARRAYS AND ASSOCIATED GENES (CAS) CONSTITUTE BACTERIAL ADAPTIVE IMMUNE SYSTEMS AND FUNCTION AS VARIABLE GENETIC ELEMENTS. THIS STUDY AIMED TO CONDUCT A GENOMIC ANALYSIS OF ACB COMPLEX GENOMES AVAILABLE IN DATABASES TO DESCRIBE AND CHARACTERIZE CRISPR SYSTEMS AND CAS GENES.

WE GIVE A NEW CHARACTERIZATION OF GENERALIZED BÜCHI SEQUENCES (SEQUENCES WHOSE SEQUENCE OF SQUARES HAS CONSTANT SECOND DIFFERENCE (A), FOR SOME FIXED INTEGER A) OF LENGTH 3 OVER THE INTEGERS AND A STRATEGY FOR ATTACKING BÜCHIS N SQUARES PROBLEM. KNOWN CHARACTERIZATIONS OF INTEGER BÜCHI SEQUENCES OF LENGTH 3 ARE ACTUALLY CHARACTERIZATIONS OVER THE RATIONALS, PLUS SOME DIVISIBILITY CRITERIONS THAT KEEP INTEGER SEQUENCES.

EN ESTE ARTÍCULO DAMOS UN ENFOQUE MOTIVADO POR UN PAQUETE DE CLIFFORD A LA ECUACIÓN DE ONDA DE UN FÉRTIL DE $ 1/2 $ LIBRE EN EL COLECTOR DE SITTER, UNA BRANA CON TOPOLOGÍA $ M = \ MATHRM {S0} (4,1) / \ MATHRM { S0} (3,1) $ QUE VIVE EN EL ESPACIO-TIEMPO MAYORITARIO $ \ MATHBB {R} ^ {4,1} = (\ MATHRING {M} = \ MATHBB {R} ^ {5}, \ BOLDSYMBOL {\ MATHRING {G }} $ Y EQUIPADO CON UN CAMPO MÉTRICO $ \ BOLDSYMBOL {G: = - I} ^ {\ AST} \ BOLDSYMBOL {\ MATHRING {G}%} $ CON $ \ BOLDSYMBOL {I}: M \ RIGHTARROW \ MATHRING { M} $ SIENDO EL MAPA DE INCLUSIÓN. PARA OBTENER EL ANÁLOGO DE LA ECUACIÓN DE DIRAC EN EL ESPACIO-TIEMPO DE MINKOWSKI EN LA ESTRUCTURA $ \ MATHRING {M} $, FACTORIZAMOS ADECUADAMENTE LOS DOS INVARIANTES DE CASIMIR $ C_ {1} $ Y $ C_ {2} $ DEL ÁLGEBRA DE LIE DEL GRUPO DE SITTER USANDO LA RESTRICCIÓN DADA EN LA LINEALIZACIÓN DE $ C_ {2} $ COMO ENTRADA PARA LINEALIZAR $ C_ {1} $. DE ESTA MANERA OBTENEMOS UNA ECUACIÓN QUE LLAMAMOS \ TEXTBF {DHESS1, } QUE EN ESTUDIOS PREVIOS DE OTROS AUTORES SE POSTULÓ SIMPLEMENTE $. $ LUEGO DERIVAMOS UNA ECUACIÓN DE ONDA (LLAMADA \ TEXTBF {DHESS2}) PARA UN SPIN LIBRE $ 1/2 $ FERMION EN EL COLECTOR DE SITTER USANDO UN ARGUMENTO HEURÍSTICO QUE ES UN LA GENERALIZACIÓN OBVIA DE UN ARGUMENTO HEURÍSTICO (DESCRITO EN DETALLE EN EL APÉNDICE D) QUE PERMITE DERIVAR LA ECUACIÓN DE DIRAC EN EL ESPACIOTIEMPO DE MINKOWSKI Y QUE MUESTRA QUE UNA ECUACIÓN TAN FAMOSA NO EXPRESA NADA MÁS QUE EL HECHO DE QUE EL MOMENTO DE UNA PARTÍCULA LIBRE ES UN CAMPO VECTORIAL CONSTANTE TEMPORALES \ INTEGRAL DE UN CAMPO DE VELOCIDAD DADO. ES UN HECHO NOTABLE QUE \ TEXTBF {DHESS1} Y \ TEXTBF {DHESS2} \ COINCIDEN. UNO DE LOS PRINCIPALES INGREDIENTES EN NUESTRO TRABAJO ES EL USO DEL CONCEPTO DE HUERTOS DIRAC-HESTENES. LOS APÉNDICES B Y C RECUERDAN ESTE CONCEPTO Y SU RELACIÓN CON LOS CAMPOS COVARIANTES DE LA ESPINORA DE DIRAC USUALMENTE UTILIZADOS POR LOS FÍSICOS

THIS STUDY ESTIMATES AND ANALYZE THE TECHNICAL EFFICIENCY OF PORK FARMS FROM FIVE EU COUNTRIES. THE GENERALIZED TRUE RANDOM-EFFECTS (GTRE) MODEL WAS USED TO DIFFERENTIATE BETWEEN PERSISTENT AND TRANSITORY TECHNICAL EFFICIENCY. THE RESULTS SHOW THAT ELASTICITIES ARE ROBUST TO VARIOUS SPECIFICATIONS. SPANISH FARMS SHOW THE HIGHEST AVERAGE EFFICIENCY SCORE. IN DENMARK, GERMANY, FRANCE, AND POLAND, THE MOST SIGNIFICANT OPPORTUNITIES FOR GROWTH ARE FOUND IN TRANSITIONAL EFFICIENCY. THE DEGREE OF PRODUCTIVE SPECIALIZATION IN THE FIVE COUNTRIES HAS A POSITIVE IMPACT IN THE EFFICIENCY. IN DENMARK, GERMANY, AND FRANCE, PERSISTENT EFFICIENCY HAS A POSITIVE ASSOCIATION WITH THE FRACTION OF PAID LABOR.

THE DAGUM FAMILY OF ISOTROPIC COVARIANCE FUNCTIONS HAS TWO PARAMETERS THAT ALLOW FOR DECOUPLING OF THE FRACTAL DIMENSION AND THE HURST EFFECT FOR GAUSSIAN RANDOM FIELDS THAT ARE STATIONARY AND ISOTROPIC OVER EUCLIDEAN SPACES. SUFFICIENT CONDITIONS THAT ALLOW FOR POSITIVE DEFINITENESS IN RD OF THE DAGUM FAMILY HAVE BEEN PROPOSED ON THE BASIS OF THE FACT THAT THE DAGUM FAMILY ALLOWS FOR COMPLETE MONOTONICITY UNDER SOME PARAMETER RESTRICTIONS. THE SPECTRAL PROPERTIES OF THE DAGUM FAMILY HAVE BEEN INSPECTED TO A VERY LIMITED EXTENT ONLY, AND THIS PAPER GIVES INSIGHT INTO THIS DIRECTION. SPECIFICALLY, WE STUDY FINITE AND ASYMPTOTIC PROPERTIES OF THE ISOTROPIC SPECTRAL DENSITY (INTENDED AS THE HANKEL TRANSFORM) OF THE DAGUM MODEL. ALSO, WE ESTABLISH SOME CLOSED-FORM EXPRESSIONS FOR THE DAGUM SPECTRAL DENSITY IN TERMS OF THE FOX?WRIGHT FUNCTIONS. FINALLY, WE PROVIDE ASYMPTOTIC PROPERTIES FOR SUCH A CLASS OF SPECTRAL DENSITIES.

THIS WORK CONTRIBUTES, ON THE ONE HAND, TO DETERMINE THE DIDACTIC IMPLICATIONS OF AN EPISTEMOLOGICAL ANALYSIS ON THE GENERALITY OF ECONOMIC AND ANALOGOUS METHODS IN THE RESOLUTION OF PROBLEMS OF LINEAR CARÁCTER. ON THE OTHER HAND, TO CONSTRUCT AND TO EVALUATE A DIDACTIC SEQUENCE THAT MAKES THE STUDENTS UNDERSTAND BETTER THE MEANING OF A UNIFYING CONCEPT AND TO HELP TO THE SPONTANEOUS MOBILIZATION OF ITS PROPERTIES BY THE EXPOSURE TO A SERIES OF PROBLEMS THAT RESORT TO DIFFERENT MATHEMATICAL FRAMEWORKS (NUMERICAL, GEOMETRIC, PHYSICAL AND ANALYTICAL). THE THEORETICAL ARTICULATION CONCERNS THE MODELLING AND PROCESS/OBJECT DUALITY IN THE FORMATION OF THE CONCEPT. WE ARE INSPIRE BY A DIDACTIC ENGINEERING TO PRESENT A PART OF THE RESULTS OF OUR RESEARCH. THESE RESULTS REFER TO THE LEVELS OF EXPLICITNESS AND TO THE COMPETENCES DEVELOPED IN THE USE OF TECHNICAL SKILLS AND MATHEMATICAL METHODS THAT HELP TO MAKE EXPLICIT THE PROCESS OF FORMATION OF THE NOTION.KEYWORDS : DIDACTICAL ENGINEERING; DIDACTIC SEQUENCE; UNIFYING MODEL; COMPETENCIES IN MODELING; LEVELS OF COMMUNICATION.

IN THIS WORK WE PRESENT AND ANALYZE A FINITE ELEMENT SCHEME YIELDING DISCONTINUOUS GALERKIN APPROXIMATIONS TO THE SOLUTIONS OF THE STATIONARY BOUSSINESQ SYSTEM FOR THE SIMULATION OF NON-ISOTHERMAL FLOW PHENOMENA. THE MODEL CONSISTS OF A NAVIER?STOKES-TYPE SYSTEM, DESCRIBING THE VELOCITY AND THE PRESSURE OF THE FLUID, COUPLED TO AN ADVECTION-DIFFUSION EQUATION FOR THE TEMPERATURE. THE PROPOSED NUMERICAL SCHEME IS BASED ON THE STANDARD INTERIOR PENALTY TECHNIQUE AND AN UPWIND APPROACH FOR THE NONLINEAR CONVECTIVE TERMS AND EMPLOYS THE DIVERGENCE-CONFORMING BREZZI?DOUGLAS?MARINI (BDM) ELEMENTS OF ORDER K FOR THE VELOCITY, DISCONTINUOUS ELEMENTS OF ORDER K-1FOR THE PRESSURE AND DISCONTINUOUS ELEMENTS OF ORDER K FOR THE TEMPERATURE. EXISTENCE AND UNIQUENESS RESULTS ARE SHOWN AND STATED RIGOROUSLY FOR BOTH THE CONTINUOUS PROBLEM AND THE DISCRETE SCHEME, AND OPTIMAL A PRIORI ERROR ESTIMATES ARE ALSO DERIVED. NUMERICAL EXAMPLES BACK UP THE THEORETICAL EXPECTED CONVERGENCE RATES AS WELL AS THE PERFORMANCE OF THE PROPOSED TECHNIQUE.

ANTARCTIC VASCULAR PLANTS SUCH AS DESCHAMPSIA ANTARCTICA (DA) COULD GENERATE MORE SUITABLE MICRO-ENVIRONMENTAL CONDITIONS FOR THE ESTABLISHMENT OF OTHER PLANTS LIKE COLOBANTHUS QUITENSIS (CQ). ALTHOUGH POSITIVE PLANT?PLANT INTERACTIONS HAVE BEEN SHOWN TO CONTRIBUTE TO PLANT PERFORMANCE AND ESTABLISHMENT, LITTLE IS KNOWN ABOUT HOW MICROORGANISMS MIGHT MODULATE THOSE INTERACTIONS, PARTICULARLY IN STRESSFUL ENVIRONMENTAL CONDITIONS. SEVERAL REPORTS HAVE FOCUSED ON THE POSSIBLE ECOLOGICAL ROLES OF MICROORGANISMS ON VASCULAR PLANTS, BUT IF RHIZOSPHERIC MICROORGANISMS CAN IMPACT POSITIVE INTERACTIONS AMONG ANTARCTIC PLANTS HAS BEEN SELDOM STUDIED. HERE, WE ASSESSED THE PHYSICAL?CHEMICAL CHARACTERISTICS OF RHIZOSPHERIC SOILS FROM CQ GROWING ALONE OR ASSOCIATED WITH DA (CQ?+?DA). IN ADDITION, WE COMPARED THE RHIZOSPHERE MICROBIOMES ASSOCIATED WITH CQ, EITHER GROWING ALONE OR ASSOCIATED WITH DA (CQ?+?DA), USING A SHOTGUN METAGENOMIC DNA SEQUENCING APPROACH AND USING EGGNOG FOR COMPARATIVE AND FUNCTIONAL METAGENOMICS. OVERALL, THERE WERE NO DIFFERENCES AMONG RHIZOSPHERIC SOILS IN TERMS OF PHYSICAL?CHEMICAL CHARACTERISTICS. ON THE OTHER HAND, OUR RESULTS SHOW SIGNIFICANT DIFFERENCES IN TERMS OF TAXONOMIC DIVERSITY BETWEEN RHIZOSPHERIC SOILS. FUNCTIONAL ANNOTATION AND PATHWAY ANALYSIS SHOWED THAT MICROORGANISMS FROM RHIZOSPHERIC SOIL SAMPLES ALSO HAVE SIGNIFICANT DIFFERENCES IN GENE ABUNDANCE ASSOCIATED WITH SEVERAL FUNCTIONAL CATEGORIES RELATED TO ENVIRONMENTAL TOLERANCE AND IN METABOLIC PATHWAYS LINKED TO OSMOTIC STRESS, AMONG OTHERS. OVERALL, THIS STUDY PROVIDES FOUNDATIONAL INFORMATION WHICH WILL ALLOW TO EXPLORE THE BIOLOGICAL IMPACT OF THE RHIZOBIOME AND ITS FUNCTIONAL MECHANISMS AND MOLECULAR PATHWAYS ON PLANT PERFORMANCE AND HELP EXPLAIN THE CONCERTED STRATEGY DEPLOYED BY CQ TO INHABIT AND COPE WITH THE HARSH CONDITIONS PREVAILING IN ANTARCTICA.

THE SLACK-BASED ALGORITHMS ARE POPULAR BIN-FOCUS HEURISTICS FOR THE BIN PACKING PROBLEM (BPP). THE SELECTION OF SLACKS IN EXISTING METHODS ONLY CONSIDER PREDETERMINED POLICIES, IGNORING THE DYNAMIC EXPLORATION OF THE GLOBAL DATA STRUCTURE, WHICH LEADS TO NONFULLY UTILIZATION OF THE INFORMATION IN THE DATA SPACE. IN THIS PAPER, WE PROPOSE A NOVEL SLACK-BASED FLEXIBLE BIN PACKING FRAMEWORK CALLED REINFORCED BIN PACKING FRAMEWORK (RBF) FOR THE ONE-DIMENSIONAL BPP. RBF CONSIDERS THE RL-SYSTEM, THE INSTANCE-EIGENVALUE MAPPING PROCESS, AND THE REINFORCED-MBS STRATEGY SIMULTANEOUSLY. IN OUR WORK, THE SLACK IS GENERATED WITH A REINFORCEMENT LEARNING STRATEGY, IN WHICH THE PERFORMANCE-DRIVEN REWARDS ARE USED TO CAPTURE THE INTUITION OF LEARNING THE CURRENT STATE OF THE CONTAINER SPACE, THE ACTION IS THE CHOICE OF THE PACKING CONTAINER, AND THE STATE IS THE REMAINING CAPACITY AFTER PACKING. DURING THE CONSTRUCTION OF THE SLACK, AN INSTANCE-EIGENVALUE MAPPING PROCESS IS DESIGNED AND UTILIZED TO GENERATE THE REPRESENTATIVE AND CLASSIFIED VALIDATE SET. FURTHERMORE, THE PROVISION OF THE SLACK COEFFICIENT IS INTEGRATED INTO MBS-BASED PACKING PROCESS. EXPERIMENTAL RESULTS SHOW THAT, IN COMPARISON WITH FIT ALGORITHMS, MBS AND MBS?, RBF ACHIEVES STATE-OF-THE-ART PERFORMANCE ON BINDATA AND SCH_WAE DATASETS. IN PARTICULAR, IT OUTPERFORMS ITS BASELINE MBS AND MBS?, AVERAGING THE NUMBER INCREASE OF OPTIMAL SOLUTIONS OF 189.05% AND 27.41%, RESPECTIVELY.

ATUALMENTE A PRESENÇA DO ALUNO COM DEFICIÊNCIA NAS AULAS DE EDUCAÇÃO FÍSICA JÁ E UMA REALIDADE, EXIGINDO A FORMAÇÃO DO PROFESSOR DE FORMA SÓLIDA E CONSONANTE COM OS PRINCÍPIOS INCLUSIVOS. O OBJETIVO DO ESTUDO É INVESTIGAR A FORMAÇÃO INICIAL DE PROFESSORES DE EDUCAÇÃO FÍSICA EM UNIVERSIDADES CHILENAS. PARTICIPARAM DO ESTUDO 16 DOCENTES RESPONSÁVEIS PELAS DISCIPLINAS DE EDUCAÇÃO FÍSICA ADAPTADA NAS UNIVERSIDADES PÚBLICAS E PRIVADAS DO CHILE. FORAM APLICADOS QUESTIONÁRIOS PARA ANÁLISE DOS CONCEITOS E ABORDAGENS UTILIZADOS PELOS DOCENTES PARA FORMAÇÃO DO PROFESSOR DE EDUCAÇÃO FÍSICA PARA INCLUSÃO. OS QUESTIONÁRIOS FORAM ANALISADOS ATRAVÉS DA TÉCNICA DE ANÁLISE DE CONTEÚDO. A FORMAÇÃO DO PROFESSOR DE EDUCAÇÃO FÍSICA ESTÁ CONSONANTE COM OS PRINCÍPIOS DA INCLUSÃO. PORÉM, ESTE PROCESSO AINDA ENCONTRA MUITAS BARREIRAS, ONDE HÁ MAIOR NECESSIDADE DE VINCULAÇÃO COM O CONHECIMENTO CIENTÍFICO E A PESQUISA, BEM COMO UTILIZAÇÃO DE ABORDAGENS MAIS PRÓXIMAS DO COTIDIANO ESCOLAR.

THE POLLUTING OF MARINE ECOSYSTEMS WITH PLASTICS IS BOTH A GLOBAL AND A LOCAL PROBLEM WITH POTENTIALLY SEVERE CONSEQUENCES FOR WILDLIFE, ECONOMIC ACTIVITY, AND HUMAN HEALTH. IT IS A PROBLEM THAT ORIGINATES IN COUNTRIES-INABILITY TO ADEQUATELY MANAGE THE GROWING FLOW OF WASTE. WE USE AN IMPACT PATHWAY FRAMEWORK TO TRACE THE FLOW OF PLASTICS THROUGH THE SOCIO-ECOLOGICAL SYSTEM AND IDENTIFY THE ROLE OF SPECIFIC POLICY INSTRUMENTS IN ACHIEVING BEHAVIORAL CHANGES TO REDUCE MARINE PLASTIC WASTE. WE PRODUCE A TOOLBOX FOR FINDING A POLICY THAT IS SUITABLE FOR DIFFERENT COUNTRIES. WE USE THE IMPACT PATHWAY AND TOOLBOX TO MAKE COUNTRY-SPECIFIC RECOMMENDATIONS THAT REFLECT THE REALITY IN EACH OF THE SELECTED COUNTRIES.

WE PROPOSE A NEW FULLY-MIXED FORMULATION FOR THE STATIONARY OBERBECK-BOUSSINESQ PROBLEM WHEN VISCOSITY DEPENDS ON BOTH TEMPERATURE AND CONCENTRATION. FOLLOWING SIMILAR IDEAS APPLIED PRE- VIOUSLY TO THE BOUSSINESQ AND NAVIER-STOKES EQUATIONS, WE INCORPORATE THE VELOCITY GRADIENT AND THE BERNOULLI STRESS TENSOR AS AUXILIARY UNKNOWNS OF THE FLUID EQUATIONS. IN TURN, THE GRADIENTS OF TEMPERATURE AND OF CONCENTRATION, IN ADDITION TO A BERNOULLI VECTOR, ARE INTRODUCED AS FURTHER VARIABLES OF THE HEAT AND MASS TRANSFER EQUATIONS. CONSEQUENTLY, A DUAL-MIXED APPROACH WITH DIRICHLET DATA IS DEFINED IN EACH SUB-SYSTEM, AND THE WELL-KNOWN BANACH AND BROUWER THEOREMS ARE COMBINED WITH BABU?SKA-BREZZI?S THEORY IN EACH INDEPENDENT SET OF EQUATIONS, YIELDING THE SOLV- ABILITY OF THE CONTINUOUS AND DISCRETE SCHEMES. NEXT, WE DESCRIBE SPECIFIC FINITE ELEMENT SUBSPACES SATISFYING APPROPRIATE STABILITY REQUIREMENTS, AND DERIVE OPTIMAL A PRIORI ERROR ESTIMATES. FINALLY, SEVERAL NUMERICAL EXAMPLES ILLUSTRATING THE PERFORMANCE OF THE FULLY-MIXED SCHEME AND CONFIRMING THE THEORETICAL RATES OF CONVERGENCE ARE PRESENTED.

BACKGROUND: ONE OF THE MAIN LESSONS OF THE COVID-19 PANDEMIC IS THAT WE MUST PREPARE TO FACE ANOTHER PANDEMIC LIKE IT. CONSEQUENTLY, THIS ARTICLE AIMS TO DEVELOP A GENERAL FRAMEWORK CONSISTING OF EPIDEMIOLOGICAL MODELING AND A PRACTICAL IDENTIFIABILITY APPROACH TO ASSESS COMBINED VACCINATION AND NON-PHARMACEUTICAL INTERVENTION (NPI) STRATEGIES FOR THE DYNAMICS OF ANY TRANSMISSIBLE DISEASE. MATERIALS AND METHODS: EPIDEMIOLOGICAL MODELING OF THE PRESENT WORK RELIES ON DELAY DIFERENTIAL EQUATIONS DESCRIBING TIME VARIATION AND TRANSITIONS BETWEEN SUITABLE COMPARTMENTS. THE PRACTICAL IDENTIFIABILITY APPROACH RELIES ON PARAMETER OPTIMIZATION, A PARAMETRIC BOOTSTRAP TECHNIQUE, AND DATA PROCESSING. WE IMPLEMENTED A CAREFUL PARAMETER OPTIMIZATION ALGORITHM BY SEARCHING FOR SUITABLE INITIALIZATION ACCORDING TO EACH PROCESSED DATASET. IN ADDITION, WE IMPLEMENTED A PARAMETRIC BOOTSTRAP TECHNIQUE TO ACCURATELY PREDICT THE ICU CURVE TREND IN THE MEDIUM TERM AND ASSESS VACCINATION. RESULTS: WE SHOW THE FRAMEWORK?S CALIBRATION CAPABILITIES FOR SEVERAL PROCESSED COVID-19 DATASETS OF DI ERENT REGIONS OF CHILE. WE FOUND A UNIQUE RANGE OF PARAMETERS THAT WORKS WELL FOR EVERY DATASET AND PROVIDES OVERALL NUMERICAL STABILITY AND CONVERGENCE FOR PARAMETER OPTIMIZATION. CONSEQUENTLY, THE FRAMEWORK PRODUCES OUTSTANDING RESULTS CONCERNING QUANTITATIVE TRACKING OF COVID-19 DYNAMICS. IN ADDITION, IT ALLOWS US TO ACCURATELY PREDICT THE ICU CURVE TREND IN THE MEDIUM TERM AND ASSESS VACCINATION. FINALLY, IT IS REPRODUCIBLE SINCE WE PROVIDE OPEN-SOURCE CODES THAT CONSIDER PARAMETER INITIALIZATION STANDARDIZED FOR EVERY DATASET. CONCLUSION: THIS WORK ATTEMPTS TO IMPLEMENT A HOLISTIC AND GENERAL MODELING FRAMEWORK FOR QUANTITATIVE TRACKING OF THE DYNAMICS OF ANY TRANSMISSIBLE DISEASE, FOCUSING ON ACCURATELY PREDICTING THE ICU CURVE TREND IN THE MEDIUM TERM AND ASSESSING VACCINATION. THE SCIENTIFIC COMMUNITY COULD ADAPT IT TO EVALUATE THE IMPACT OF COMBINED VACCINATION AND NPIS STRATEGIES FOR COVID

COMPREHENSIVE ASSESSMENTS OF SPECIES? EXTINCTION RISKS HAVE DOCUMENTED THE EXTINCTION CRISIS1 AND UNDERPINNED STRATEGIES FOR REDUCING THOSE RISKS2. GLOBAL ASSESSMENTS REVEAL THAT, AMONG TETRAPODS, 40.7% OF AMPHIBIANS, 25.4% OF MAMMALS AND 13.6% OF BIRDS ARE THREATENED WITH EXTINCTION3. BECAUSE GLOBAL ASSESSMENTS HAVE BEEN LACKING, REPTILES HAVE BEEN OMITTED FROM CONSERVATION-PRIORITIZATION ANALYSES THAT ENCOMPASS OTHER TETRAPODS4,5,6,7. REPTILES ARE UNUSUALLY DIVERSE IN ARID REGIONS, SUGGESTING THAT THEY MAY HAVE DIFFERENT CONSERVATION NEEDS6. HERE WE PROVIDE A COMPREHENSIVE EXTINCTION-RISK ASSESSMENT OF REPTILES AND SHOW THAT AT LEAST 1,829 OUT OF 10,196?SPECIES (21.1%) ARE THREATENED?CONFIRMING A PREVIOUS EXTRAPOLATION8 AND REPRESENTING 15.6?BILLION YEARS OF PHYLOGENETIC DIVERSITY. REPTILES ARE THREATENED BY THE SAME MAJOR FACTORS THAT THREATEN OTHER TETRAPODS?AGRICULTURE, LOGGING, URBAN DEVELOPMENT AND INVASIVE SPECIES?ALTHOUGH THE THREAT POSED BY CLIMATE CHANGE REMAINS UNCERTAIN. REPTILES INHABITING FORESTS, WHERE THESE THREATS ARE STRONGEST, ARE MORE THREATENED THAN THOSE IN ARID HABITATS, CONTRARY TO OUR PREDICTION. BIRDS, MAMMALS AND AMPHIBIANS ARE UNEXPECTEDLY GOOD SURROGATES FOR THE CONSERVATION OF REPTILES, ALTHOUGH THREATENED REPTILES WITH THE SMALLEST RANGES TEND TO BE ISOLATED FROM OTHER THREATENED TETRAPODS. ALTHOUGH SOME REPTILES?INCLUDING MOST SPECIES OF CROCODILES AND TURTLES?REQUIRE URGENT, TARGETED ACTION TO PREVENT EXTINCTIONS, EFFORTS TO PROTECT OTHER TETRAPODS, SUCH AS HABITAT PRESERVATION AND CONTROL OF TRADE AND INVASIVE SPECIES, WILL PROBABLY ALSO BENEFIT MANY REPTILES.