scholarly journals Empirical evidence reveals the phase diagram of patch patterns in Mediterranean drylands

2017 ◽  
Author(s):  
Fernando Meloni ◽  
Cristiano R. F. Granzotti ◽  
Alexandre S. Martinez
Keyword(s):  
Phase Diagram ◽  
Phase Transitions ◽  
Satellite Images ◽  
A Priori ◽  
Continuous Phase ◽  
Adequate Description ◽  
Scaling Exponents ◽  
Open Issue ◽  
The Subject ◽  
Ecological Functioning

AbstractDrylands are ecosystems with limited water resources, often subjected to desertification. Conservation and restoration efforts towards these ecosystems depend on the interplay between ecological functioning and spatial patterns formed by local vegetation. Despite recent advances on the subject, an adequate description of phase transitions between the various vegetated phases remains an open issue. Here, we gather vegetation data of drylands from Southern Spain using satellite images. Our findings support three vegetated phases, separated by two distinct phase transitions, including a continuous phase transition, with new relations between scaling exponents of ecological variables. The phase diagram is obtained without a priori assumption about underlying ecological dynamics. We apply our analysis to a different dryland system in the Western United States and verify a compatible critical behavior, in agreement with the universality hypothesis.

Educación y valores

2014 ◽  
pp. 83
Author(s):  
Sabino de Juan López
Keyword(s):  
Key Words ◽  
A Priori ◽  
Palabras Clave ◽  
The Subject ◽  
The Relationship ◽  
Problem Of The Criterion

RESUMEN En el artículo se ofrece una reflexión en torno a la educación y valores. Tras una referencia a los diferentes sentidos en que se puede plantear el problema en función de la forma como se puede entender la relación entre los dos sustantivos “educación” y “valores”, la reflexión se centra en algunos problemas relacionados con los valores en cuanto contenidos de la educación. Primeramente se refiere al problema del criterio en función del cual determinar los valores de la educación, concluyendo en que el criterio no podía ser ni de carácter a priori, ni empírico, sino “sintético”. A continuación, se afronta el problema del principio, de la fuente de los valores, o la concreción del criterio de los valores de la educación, entendiendo que éstos deberían ser determinados a partir del sujeto de la educación. Se concluye con la referencia a una exigencia de los valores de la educación, la configuración de una totalidad unitaria e interactiva. Palabras clave: educación, valores, fuente de valores, integración, cultura EDUCATION AND VALUES ABSTRACT The article offers a reflection on education and values. After a reference to the different senses in which one can pose the problem in terms of how you can understand the relationship between the two nouns “education” and “values”, reflection focuses on some problems related to the values in the contents of education. First, it concerns the problem of the criterion against which to determine the values of education, concluding that the criterion could be neither a priori in nature, not empirical, but “synthetic”. Herein, the problem of principle is faced, the source of values, or the realization of the criterion of the values of education, understanding that these should be determined from the subject of education. It concludes with the reference of a requirement of the values in education, setting up a unitary and interactive whole. Key Words: education, values , power values , integration, culture

OS IMPACTOS AMBIENTAIS ORIUNDOS DA IMPLANTAÇÃO DA VIA PAISAGÍSTICA AS MARGENS DO RIO MARANGUAPINHO NO BAIRRO CANINDEZINHO, FORTALEZA – CE

2019 ◽  
Vol 21 (2) ◽  
pp. 1374-1386
Author(s):  
Daniel Paulo Braga ◽  
Gislania de Meneses Silva ◽  
Tulio Viana Bandeira ◽  
Maria Lucia Brito da Cruz
Keyword(s):  
Environmental Impact ◽  
Urban Space ◽  
Satellite Images ◽  
Spatial Organization ◽  
Urban Infrastructure ◽  
Public Agencies ◽  
Protection Area ◽  
The Subject ◽  
Del Rio ◽  
Digital Or

O referido trabalho busca fazer uma análise dos impactos ambientais oriundos da construção da via paisagística às margens do Rio Maranguapinho no bairro Canindezinho, ressaltando as transformações geradas pela sua implantação e a modificação do espaço urbano e das formas de ocupação da planície fluvial do rio neste trecho. Para a obtenção de resultados, foi realizado pesquisas bibliográficas e visitas em órgãos públicos para levantamento e obtenção de material digital ou impresso acerca da temática abordada. Efetuou-se a análise de imagens de satélite dos anos de 2010 e 2016 em caráter de comparação das temporalidades quanto as ocupações na Área de Proteção Permanente – APP. Também foram realizadas visitas de campo em pontos do bairro para verificação dos impactos e melhor compreender a realidade do objeto em estudo. Logo, os resultados demonstram que as intervenções realizadas pela via paisagística agregaram outros equipamentos urbanos de infraestrutura e organização espacial, tais como barragens, praças e conjuntos habitacionais, incluindo a qualificação das margens para a recuperação das APPs de aproximadamente 50 metros ao longo do rio, contudo, foram identificados problemas quanto a remoção dos moradores e a utilização das áreas desapropriadas para a acumulação de resíduos sólidos.Palavras-chave: Área de Preservação Permanente. Recursos Hídricos. Impacto Ambiental. ABSTRACTThis work seeks to analyze the environmental impacts of the construction of the landscaped road on the banks of the Maranguapinho River in the Canindezinho neighborhood, highlighting the transformations generated by its implantation and the modification of the urban space and the forms of occupation of the fluvial plain of the river in this section . In order to obtain results, bibliographical researches and visits were made to public agencies to collect and obtain digital or printed material about the subject matter. The analysis of satellite images of the years 2010 and 2016 was carried out in a comparison of temporalities and occupations in the Permanent Protection Area (APP). Field visits were also carried out at points in the neighborhood to verify impacts and better understand the reality of the object being studied. Therefore, the results show that the landscape interventions added other urban infrastructure and spatial organization equipment, such as dams, squares and housing complexes, including the qualification of the margins for the recovery of PPAs of approximately 50 meters along the river, however, problems were identified regarding the removal of the residents and the use of the expropriated areas for solid waste accumulation.Keywords: Permanent Preservation Area. Water resources. Environmental impact. RESUMENEste trabajo busca analizar los impactos ambientales derivados de la construcción de la carretera ajardinada a orillas del río Maranguapinho en el barrio de Canindezinho, destacando las transformaciones generadas por su implementación y la modificación del espacio urbano y las formas de ocupación de la llanura del río en este tramo. . Para obtener resultados, se llevaron a cabo investigaciones bibliográficas y visitas a agencias públicas para recopilar y obtener material digital o impreso sobre el tema. Se analizaron imágenes satelitales de 2010 y 2016 para comparar las temporalidades con respecto a las ocupaciones en el Área de Protección Permanente - APP. También se realizaron visitas de campo en puntos del vecindario para verificar los impactos y comprender mejor la realidad del objeto en estudio. Por lo tanto, los resultados muestran que las intervenciones paisajísticas han agregado otra infraestructura urbana y equipo de organización espacial, como presas, plazas y urbanizaciones, incluida la calificación de márgenes para la recuperación de APP de aproximadamente 50 metros a lo largo del río, sin embargo, se identificaron problemas con respecto a la remoción de residentes y el uso de áreas expropiadas para la acumulación de desechos sólidos.Palabras clave: Área de Preservación Permanente. Recursos hídricos. Impacto ambiental.

Self and Selves

2017 ◽  
Author(s):  
Ralph C.S. Walker
Keyword(s):  
Personal Identity ◽  
Moral Philosophy ◽  
A Priori ◽  
The Status ◽  
The Subject ◽  
Synthetic A Priori

Kant is committed to the reality of a subject self, outside time but active in forming experience. Timeless activity is problematic, but that can be dealt with. But he holds that the subject of experience is not an object of experience, so nothing can be known about it; this raises a problem about the status of his own theory. But he ought to allow that we can know of its existence and activity, as preconditions of experience: the Critique allows that synthetic a priori truths can be known in this way. However, its identity conditions remain unknowable. Kant’s unity of apperception shares much with Locke’s continuity of consciousness, but does not determine the identity of a thing. Personal identity is bodily identity. Only Kant’s moral philosophy justifies recognizing other selves; it could warrant ascribing a similar status to animals.

scholarly journals Introduction

Ramus ◽  
1987 ◽  
Vol 16 (1-2) ◽  
pp. 1-3
Author(s):  
A.J. Boyle
Keyword(s):  
Late Antiquity ◽  
Emotional States ◽  
Latin Literature ◽  
Political Repression ◽  
Adequate Description ◽  
Literary Value ◽  
Roman Literature ◽  
Imperial Period ◽  
The Subject ◽  
Ars Amatoria

oratio certam regulam non habet; consuetudo illam ciuitatis, quae numquam in eodem diu stetit, uersat.Style has no fixed rules; the usage of society changes it, which never stays still for long.Seneca Epistle 114.13This is the first of two volumes of critical essays on Latin literature of the imperial period from Ovid to late antiquity. The focus is upon the main postclassical period (A.D. 1-150), especially the authors of the Neronian and Flavian principates (A.D. 54-96), several of whom, though recently the subject of substantial investigation and reassessment, remain largely unread, at best improperly understood. The change which took place in Roman literature between the late republic/early Augustan period and the post-Augustan empire, between the ‘classicism’ of Cicero, Virgil, Horace, Livy and the ‘postclassicism’ of Seneca, Lucan, Persius, Tacitus is conventionally misdescribed (albeit sometimes with qualifications) as the movement from Golden to Silver Latin. The description misleads on many counts, not least because it misconstrues a change in literary and poetic sensibility, in the mental sets of reader and audience, and in the political environment of writing itself, as a change in literary value. What in fact happened awaits adequate description, but it seems clear that the change began with Ovid (43 B.C. to A.D. 17), whose rejection of Augustan classicism (especially its concept of decorum or ‘appropriateness’), cultivation of generic disorder and experimentation (witness, e.g., Ars Amatoria and Metamorphoses), love of paradox, absurdity, incongruity, hyperbole, wit, and focus on extreme emotional states, influenced everything that followed. Ovid also witnessed and suffered from the increasing political repression of the principate; he was banished for — among other things — his words, carmen. And political repression seems to have been a signal factor, if difficult to evaluate, in the formation of the postclassical style.

scholarly journals Electric properties of olive oil under pressure

2021 ◽  
Author(s):  
L. T. Pawlicki ◽  
R. M. Siegoczyński ◽  
S. Ptasznik ◽  
K. Marszałek
Keyword(s):  
Molecular Structure ◽  
Phase Transition ◽  
Phase Diagram ◽  
Phase Transitions ◽  
Olive Oil ◽  
Material Parameters ◽  
First Order ◽  
Long Time ◽  
Capacitive Reactance ◽  
First Order Phase

AbstractThe main purpose of the experiment was a thermodynamic research with use of the electric methods chosen. The substance examined was olive oil. The paper presents the resistance, capacitive reactance, relative permittivity and resistivity of olive. Compression was applied with two mean velocities up to 450 MPa. The results were shown as functions of pressure and time and depicted on the impedance phase diagram. The three first order phase transitions have been detected. All the changes in material parameters were observed during phase transitions. The material parameters measured turned out to be the much more sensitive long-time phase transition factors than temperature. The values of material parameters and their dependence on pressure and time were compared with the molecular structure, arrangement of molecules and interactions between them. Knowledge about olive oil parameters change with pressure and its phase transitions is very important for olive oil production and conservation.

scholarly journals SUPERCONDUCTING PHASE TRANSITION IN THE NAMBU–JONA-LASINIO MODEL

2001 ◽  
Vol 16 (17) ◽  
pp. 1129-1138 ◽  
Author(s):  
M. SADZIKOWSKI
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Phase Transitions ◽  
Superconducting Phase ◽  
Coupling Constants ◽  
Coupling Constant ◽  
Rich Phase ◽  
Quark Interaction ◽  
Quark Coupling ◽  
Superconducting Phase Transition

The Nambu–Bogoliubov–de Gennes method is applied to the problem of superconducting QCD. The effective quark–quark interaction is described within the framework of the Nambu–Jona-Lasinio model. The details of the phase diagram are given as a function of the strength of the quark–quark coupling constant G′. It is found that there is no superconducting phase transition when one uses the relation between the coupling constants G′ and G of the Nambu–Jona-Lasinio model which follows from the Fierz transformation. However, for other values of G′ one can find a rich phase structure containing both the chiral and the superconducting phase transitions.

Structures and phase transitions in barium sodium niobate tungsten bronze (BNN)

2021 ◽  
Vol 77 (6) ◽  
Author(s):  
Thomas A. Whittle ◽  
Christopher J. Howard ◽  
Siegbert Schmid
Keyword(s):  
Phase Transitions ◽  
Room Temperature ◽  
Tungsten Bronze ◽  
Standard Setting ◽  
Experimental Results ◽  
Temperature Structure ◽  
Sodium Niobate ◽  
Tetragonal Tungsten Bronze ◽  
Space Group ◽  
The Subject

The room-temperature structure of the filled tetragonal tungsten bronze, Ba2NaNb5O15 (BNN), has been the subject of a number of studies, and these studies have given an almost corresponding number of different results. From a group theoretical examination of the different possibilities and a review of the published experimental results we conclude that the room-temperature structure is that proposed by Labbé et al. [J. Phys. Condens. Matter (1989), 2, 25–43] in the space group Bbm2 (Ama2 in standard setting) on a 2\sqrt{2}a × \sqrt{2}a × 2c cell. Upon heating, the structure remains ferroelectric but becomes tetragonal (space group P4bm) at 550 K, then paraelectric (space group P4/mbm) at and above 860 K.

scholarly journals An application of the theory of probabilities to the study of a priori pathometry.—Part II

1917 ◽  
Vol 93 (650) ◽  
pp. 212-225 ◽  
Keyword(s):  
Royal Society ◽  
A Priori ◽  
Active Service ◽  
The Subject ◽  
Government Grant

Part I of this paper was published in the ‘Proceedings', A, vol. 92 (1916), having been read on November 11, 1915. In June last, the Royal Society was kind enough to give a Government Grant for providing me with assistance in order to complete the paper, and for carrying on further studies upon the subject; and Miss Hilda P. Hudson, M. A., Sc. D., was appointed for the work from May 1, 1916. The continuation of the paper has accordingly been written in conjunction with her; and I should like to take the opportunity to express my obligations to her for her valuable assistance, especially in regard to Part III—which is to appear shortly. I must apologise for the rather numerous small errors in Part I—due to the fact that the proofs were received by me when I was abroad on active service.

Early recognizing of a hurricanes from public satellite images

2021 ◽  
Author(s):  
A.A. Kuzmitsky ◽  
M.I. Truphanov ◽  
O.B. Tarasova ◽  
D.V. Fedosenko
Keyword(s):  
Satellite Images ◽  
A Priori ◽  
Vortex Formation ◽  
Weather Conditions ◽  
Local Area ◽  
Weather Data ◽  
Polar Coordinate System ◽  
Practical Implementation ◽  
Characteristic Points ◽  
Moving Points

One of the key tasks associated with the fast identification of powerful tropical hurricanes, the assessment of the growth of their power, is the formation of such an input dataset, which is based on data that are technically easy and accurately recorded and calculated using existing sources located in the open accessibility. The presented work is based on the analysis of satellite images as the main data sources, and on weather data as peripheral. An obvious advantage of satellite images in comparison with other sources of data on weather conditions is their high spatial resolution, as well as the ability to obtain data from various satellites, which increases the timeliness and accuracy of retrieving primary information. The developed approach consists in performing the following main interconnected iteratively performed groups of subtasks: calculation of feature points describing the location of individual cloud areas at different points in time by using different descriptors; comparison of the same cloud areas at specified times to analyze the local directions of cloud movements; tracking of cloudiness for specified time intervals; calculation of local features for selected points of cloudiness to recognize the origin and analyze turbulence; the formation of the dynamics of changes in the local area near the trajectory of the point; recognition of primary characteristic features characterizing the transformation of local turbulences into a stable vortex formation; identification of signs of the growing of a hurricane and assessment of the primary dynamics of the increase in its power; generalization and refinement of a priori given features by analyzing similar features of known cyclones. To detect points, a modified algorithm for finding them has been introduced. To describe the points, additional descriptors are introduced based on the normalized gradient measured for the neighborhood of neighboring points and cyclically changing in the polar coordinate system. A comparative analysis of the results of applying the created method and algorithm when compared with known similar solutions revealed the following distinctive features: introduction of additional invariant orientations of features when describing characteristic points and greater stability of detecting characteristic points when analyzing cloudiness, identification of cloudiness turbulence and analysis of changes in their local characteristics and movement parameters, formation of a set of generalizing distributions when analyzing a set of moving points for the subsequent recognition of the signs of a hurricane at its initial stages of formation. The developed approach was tested experimentally in the analysis of hurricanes video recordings and their movement in the Atlantic region for the period from 2010 to 2020. The developed general approach and a specific algorithm for estimating hurricane parameters based on cloud analysis are presented. The approach is applicable for practical implementation and allows accumulating data for detecting hurricanes in real time based on publicly available data for the development of a physical and mathematical model.

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