1,639 research outputs found
Toeplitz Operators on Two Poly-Bergman-Type Spaces of the Siegel Domain with Continuous Nilpotent Symbols
We describe certain -algebras generated by Toeplitz operators with
nilpotent symbols and acting on a poly-Bergman type space of the Siegel domain
. Bounded measurable functions of the form
are called nilpotent symbols. In this work we consider symbols
of the form and , where both limits
and exist, and belongs to the set of piece-wise continuous functions on
and with one-sided limits at . We
describe certain -algebras generated by such Toeplitz operators that turn
out to be isomorphic to subalgebras of , where and
Toeplitz Operators Acting on True-Poly-Bergman Type Spaces of the Two-Dimensional Siegel Domain: Nilpotent Symbols
We describe certain -algebras generated by Toeplitz operators with
nilpotent symbols and acting on a poly-Bergman type space of the Siegel domain
.
Bounded measurable functions of the form are called nilpotent symbols.
In this work we consider symbols of the form
, where both
limits
and exist,
and belongs to the
set of piece-wise continuous functions on
and
having one-side limit values at each point of a finite set .
We prove that the -algebra generated by all Toeplitz operators
is
isomorphic to , where
and .Comment: arXiv admin note: substantial text overlap with arXiv:2306.0238
Towards a Formalization of a Framework to Express and Reason about Software Engineering Methods
Software Engineering is considered a knowledge-intensive discipline, in which knowledge creation, collection and sharing is an uninterrupted process. However, a large part of this knowledge exists in a tacit form and depends on practitioners. Therefore defining a mechanism to transform tacit knowledge into explicit one is of upmost importance. This paper presents a formalization approach to represent Software Engineering practitioners' tacit knowledge, which is related to their ways of working, as a set of explicit statements. The formalization is based on KUALI-BEH, which is a normative kernel extension of ESSENCE formal specification, and consists of three parts: an ontology to share a common representation of knowledge as a set of concepts; a Situational Method Engineering based algebra that represents well-defined method properties and operations; and a knowledge representation of the ontology and algebra using Description Logics. The main objectives of this initial formalization are to improve communication among humans and machines, computational inference and reuse of knowledge
Description of the female of Poeciloxestia plagiata (Waterhouse, 1880), and of the male of Iuati spinithorax Martins & Galileo, 2010 (Coleoptera, Cerambycidae)
Based on material recently collected in Peru (Loreto department) the female of Poeciloxestia plagiata (Waterhouse, 1880), and the male of Iuati spinithorax Martins & Galileo, 2010 are described and figured for the first time. Both species are recorded for the first time from Peru
Description of the female of Poeciloxestia plagiata (Waterhouse, 1880), and of the male of Iuati spinithorax Martins & Galileo, 2010 (Coleoptera, Cerambycidae)
Based on material recently collected in Peru (Loreto department) the female of Poeciloxestia plagiata (Waterhouse, 1880), and the male of Iuati spinithorax Martins & Galileo, 2010 are described and figured for the first time. Both species are recorded for the first time from Peru
Impacto de las tecnologías de la información y comunicación en el aprendizaje y motivación en un grupo de estudiantes de segundo básico
Tesis (Profesor de Educación General Básica, Licenciado en Educación)El siguiente seminario de grado fue realizado para determinar el impacto que puede ejercer el uso de tecnologías de información y comunicación en el aprendizaje y motivación en un grupo de estudiantes de segundo en la asignatura de historia.
A lo largo de este artículo realizaremos un análisis sobre las tecnologías de la información y la comunicación (TIC) entendidas éstas como: un conjunto de técnicas, desarrollos y dispositivos avanzados derivados de las nuevas herramientas (software y hardware), soportes de la información y canales de comunicación que integran funcionalidades de almacenamiento, procesamiento y transmisión digitalizados de la información.
La incorporación de las TIC en la sociedad y en especial en el ámbito de la educación ha ido adquiriendo una creciente importancia y ha ido evolucionando a lo largo de estos últimos años, de tal manera que la utilización de estas tecnologías en el aula pasará de ser una posibilidad a erigirse como una necesidad.
La aparición de las nuevas tecnologías ha supuesto un cambio profundo en una sociedad que no en vano ha pasado a recibir el nombre de sociedad de la información. En nuestro actual entorno y gracias a herramientas como Internet, la información está disponible en cantidades ingentes al alcance de todos.
Tras la recolección de datos, estos fueron tabulados y analizados, estableciendo como resultado la existencia notoria entre la motivación y buenos resultados de los estudiantes con el mayor uso de TIC.The following degree was conduct to determine the impact that the use of information and communication technologies can have on learning and motivation in a group of second-grade students in the history subject.
Throughout this article, we will carry out an analysis on information and communication technologies (ICT) understood like, "The set of technologies developed to manage information and send it from one place to another." They cover a wide range of solutions. They include technologies to store information and retrieve it later, send and receive information from one site to another, or process information to calculate results and prepare reports "(ICT Services, 2006).
The incorporation of ICT in society and especially in the field of education has become increasingly important and has evolved over recent years, so that the use of these technologies in the classroom will go from being a possibility to establish itself as a necessity and as a basic work tool for teachers and students.
The emergence of new technologies has meant a profound change in a society that has in not in vain has known as the information society. In our current environment and thanks to tools such as the Internet, information is available in huge amounts available to everyone.
After the data collection, these were tabulate and analyze, establishing as a result the notable existence between the motivation and good results of the students with the greater use of ICT
Aumento de la informalidad en Colombia a causa de la coyuntura actual
Colombia se encuentra en un momento
histórico en la economía, estamos frente a
posiblemente la mayor crisis económica de la
historia, donde se reflejan tres periodos
claves que dieron un estallido dentro del país,
lo cual ha generado que Colombia tenga un
aumento en la ocupación informal. El primer
periodo clave surge en el año 2016 a causa de
la crisis petrolera donde las caídas de los
precios del petróleo se desplomaron, a causa
de las políticas tomadas por los Estados
Unidos donde muchos países que dependían
en gran parte de sus ingresos del sector
Minero-energético verían como su
crecimiento económico se reducía periodo
tras periodo, lo cual para Colombia que ha
dependido gran parte de su economía a través
de la extracción petrolera, y dejando de lado
la producción de los demás sectores de la
economía a este fenómeno lo conocemos
como La Enfermedad Holandesa. El segundo
periodo clave se debe a causa de la pandemia
del Covid 19 donde nadie en el mundo
esperaba los acontecimientos que trajo esta
pandemia, muchos sectores de la economía
Colombia, se han visto afectados, haciendo
que muchos colombianos consideren cambiar
el tipo de actividad que realizaban,
aumentando de esta forma la informalidad en
el mercado laboral. El ultimo perdió clave
que se enfrenta Colombia es la inestabilidad
política, en donde el pueblo colombiano ha
manifestado sus descontentos con el
gobierno, quien intento una reforma tributaria
la cual perjudicaba en gran medida a la clase
media quien en las economías
contemporáneas son el motor de una
economía estos hechos han encaminado a que
se genere un aumento en informalidad, por
otro lado tenemos en cuenta las grandes
cantidades de personas provenientes de
Venezuela lo cual trae consigo una gran
cantidad de personas con una mano de obra
mucho más barata que la colombiana lo que
genera como consecuencia que muchos
colombianos se vean desempleados, y deban
acercarse a usar plataformas alternativas
como lo son Rappi, Indriver, Uber entre otras
que se traduce como un aumento significativo
en la informalidad del mercado laboral
colombiano.Universidad Libre Seccional Pereira -- Facultad de Ciencias Económicas, Administrativas y Contables -- Especialización en Alta GerenciaColombia is in a historical moment at the
economy, we are facing possibly the greatest
economic crisis in history, which reflects
three key periods that gave an outbreak
within the country, which has generated that
Colombia has an increase in informal
employment. The first key period arises in
2016 due to the oil crisis where the falls in oil
prices collapsed, due to the policies taken by
the United States where many countries that
depended to a large extent on their income
from the Mining sector -energetics would see
how their economic growth was reduced
period after period, which for Colombia,
which has depended a large part of its
economy through oil extraction, and leaving
aside the production of other sectors of the
economy we know this phenomenon like The
Dutch Disease. The second key period is due
to the Covid 19 pandemic where no one in the
world expected the events that this pandemic
brought, many sectors of the Colombian
economy has been affected, causing many
Colombians are considering changing the
type of activity that carried out, thus
increasing informality in the labor market.
The last key loss that Colombia faces is
political instability, where the Colombian
people have expressed their dissatisfaction
with the government, which attempted a tax
reform which greatly harmed the middle class
who in contemporary economies are the
engine of an economy these events have led
to an increase in informality, on the other
hand we have another side we take into
account the large numbers of people from
Venezuela which brings with it a large
number of people with a labor much cheaper
than The Colombian one, which results in
many Colombians looking unemployed, and
must approach using alternative platforms
such as Rappi, Indriver, Uber, among others,
which translates into a significant increase in
the informality of the Colombian labor
market
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