4,366 research outputs found
Akivis Superalgebras and speciality
In this paper we define Akivis superalgebra and study enveloping
superalgebras for this class of algebras, proving an analogous of the PBW
Theorem. Lie and Malcev superalgebras are examples of Akivis superalgebras. For
these particular superalgebras, we describe the connection between the
classical enveloping superalgebras and the corresponding generalized concept
defined in this work
Stratifying ideals and twisted products
We study stratifying ideals for rings in the context of relative homological
algebra. Using LU-decompositions, which are a special type of twisted products,
we give a sufficient condition for an idempotent ideal to be (relative)
stratifying.Comment: 14 page
Estudio clĂnico retrospectivo
La patologĂa inflamatoria localizada del párpado es relativamente
frecuente en
consulta
s
oftalmolĂłgica
s
,
generando costes personales y sociales
.
AsĂ,
conocer s
u
incidencia,
posible etiologĂa, eficacia del tratamient
o y complicaciones, entre otros,
hacen conveniente su estudio.
OBJETIVO
S
V
alorar
la incidencia, factores asociados, tratamie
nto
s
,
complicaciones
y posible
prevenciĂłn de orzuelos y chalacio
ne
s.
MÉTODO
E
studio retrospectivo de
orzuelos y chalacio
ne
s
en 1000 pacientes asistidos
en
consulta
de O
ftalmol
ogĂa
general
.
RESULTADOS
Incidencia
de
l
5,9
% de la poblaciĂłn
(
4
,8%
orzuelos,
0,
9%
chala
cio
ne
s
y
0,1%
ambas
patologĂas
)
.
E
dad media de apariciĂłn de las patol
ogĂas
:
40 años
aproximadamente
;
orzuelos
más frecue
ntes
en
párp
ados superiores y
chalacio
ne
s en
inferiores. A
parecen
más en mujeres
(55,17%)
que en hombres
(44,83%)
.
Los orzuelos presentan valores similares en
ambos sexos;
los chalacio
ne
s inciden
má
s
en
mujeres (7) (12%) que en hombres (2)
(
2,44%).
Existe
mayor
incidencia
en personas con dietas pobres en frutas y verduras
(13)
(
22,41
%)
.
69% (40) presentan
ametropĂas
,
97,5%
(39)
son
ametropĂas bajas.
L
os má
s frecuentes:
astigmatismos (29) (50%), seguidos d
e hipermetropĂas (14) (24,13%) y miopĂas (12)
(
20,69%).
T
ratamiento médico
establecido
en el
86,21%
(5
0
)
, curando al
86% (43
).
Los casos de
cambios refractivos
(
44,82
%
)
(
26
) se tratan
optométricamente
, 12% (7) son nuevas
ametropĂas; mejora
el
73% (
16)
de
22 pacientes (
37,93%)
.
2
Se
curan el 84,21%
de 58
. H
ay un
15,79% (9
)
de complicaciones,
m
ás frecuentes en
orzuelos (89%)
:
recidivas
(
4
)
(44%), fĂstulas
(
2
)
(22%) y enquistados
(
2
)
(22%).
La presencia de
ametropĂas bajas, espe
cialmente astigmatismos, señalan
una
influe
ncia directa en la apariciĂłn
de las patologĂas.
CONCLUSIONES
Orzuelos y chalaciones
relativamente frecuente
s
en
consulta de O
ftalmologĂa
(6%)
,
sobre todo entre los
40
-
60 años
;
presenta
n
una ligera
relaciĂłn con el sexo
femenino
.
Sus causas puede
n estar relacionadas con defectos refractivos no corregidos y déficits
carenciales en la dieta
.
El tratamiento médico y refractivo parece efectivo en la
resoluciĂłn
d
e Ă©stas.3
ABSTRACT
Localized inflammatory pathology of the eyelid is usual in ophthalmological
consultations. This generates personal and social costs. Because of that,
to know
the
incidence, possible etiology, treatment efficacy
and complications among others, are
required in a study.
AIM
To assess the incidence, associated factors, treatment, complications and possible
prevention of styes and chalations in the spec
ialized healthcare environment.
METHOD
R
etrospective study of sty
es and chalations
in 1000 patients assisted in a gener
al
ophthalmology consultation.
RESULTS
The i
ncidence is 5,9%
: 4,8% styes, 0,9%
chalation
s and 0,1%
both pathologies.
They appear about
40 years
old
; the styes occur most frequently in the upper eyelids
and th
e chalations in the lower ones.
T
he pathologies appear more in women (55,17%) than in men (44,83%). Styes have
similar values in both sexes, but the rate of sickness i
s more frequent in women (7)
(
12%
) than in men (2)
(
2,44%).
69% (40) presen
t with a
metropies. 97,5%
correspond t
o low amotropies. T
he most
frequent are
astigmatism (29) (50%
),
followed by hypermetropes (14) (
24
,13%) and
shortsightedness (12) (
20,
69%).
Medical treatment in 86,21% (50), curing 86
% (43). H
ad refractive changes 44,82% (26)
w
ere treated with new graduation and cured without complications 73% (16)
optometric
ally
(22 patients: 37,93%)
C
ure 84,21% (49 patients)
of the pathology. There are
15,79% (9) of complications,
(
more
in styes) (89%)
: recurrences
(
4
)
(44%), fistula
s
(
2
)
(22
%) and encysted
(
2
)
(22%).
4
The presence of low ametropies, especially astigmatism, indicates a direct influence of
these on
the production of pathologies.
CONCLUSIONS
Styes and chalations
are relatively common in the
ophthalmology consultation (6%),
m
ore
i
n average ages 40 to 60 years
and hav
e a slight relationship with
female sex. Its
causes may be related to unregulated refractive defects and deficiencies in diet (fruit),
among others. Medical and refractive treatment seems effective in the resolution of
these pathologies.Universidad de Sevilla. Grado en Ă“ptica y OptometrĂ
Moral emotions and physiological markers in prosocial decision-making
The present study aimed to investigate the effects of prototypical moral emotions on prosocial behavior in an economic task, in interaction with physiological markers of arousal, measured through Electrodermal Response and Heart Rate, and of parasympathetic response, measured through Heart Rate Variability. 40 undergraduate and postgraduate students performed an experimental version of the Ultimatum Game with moral vignettes describing the responders. We found that participants’ mean offer in the elevation block was higher than in the outrage block. The physiological measures did not differ significantly between both emotional blocks. The results suggested that information people receive about third-parties influence their behavior towards them, through moral judgment. Therefore, the results are in line with the assumption that emotions elicited by a disinterested elicitor can influence one’s decision to help or not a third-part
EFL teachers’ Perceptions about Intercultural communicative competences and their practices in English classes on the context of current migration waves in Bogotá.
To explore, How EFL teachers promote the Intercultural Communicative Competence to develop awareness, acceptance and respect among members from other cultures and backgrounds in the context of current migration waves in Bogotá.La visiĂłn principal de este estudio se centra en analizar la relaciĂłn actual entre la enseñanza de una lengua extranjera y la enseñanza de la competencia comunicativa intercultural. Este estudio busca investigar cĂłmo los profesores de inglĂ©s como lengua extranjera promueven la Competencia Comunicativa Intercultural para desarrollar la conciencia, la aceptaciĂłn y el respeto entre miembros de otras culturas y orĂgenes en el contexto de las olas migratorias actuales en Bogotá. Este es un xi estudio cualitativo, realizado con veinte profesores de tres contextos educativos diferentes: un colegio privado, un instituto de idiomas y un programa de licenciatura en inglĂ©s. Los instrumentos que se consideraron fueron observaciones de clase
aplicadas al inicio del estudio, entrevistas semiestructuradas aplicadas durante el estudio y un grupo focal aplicado al final del estudio. El estudio mostrĂł que, de hecho, los docentes y profesores implementaron actividades para promover la interculturalidad; sin embargo, la CCI se considera parte de las lenguas extranjeras,
descuidando la diversidad cultural entre los miembros de la misma lengua materna, es decir la cultura propia. En consecuencia, la implementación de CCI no se ha promovido con éxito en las lecciones de inglés como lengua extranjera.The main vision of this study focuses on analyzing the current relationship between teaching a foreign language and teaching of intercultural communicative competence. This study seeks to investigate how EFL teachers promote the Intercultural Communicative Competence to develop awareness, acceptance and respect among members from other cultures and backgrounds in the context of current migration waves in Bogotá.. This is a qualitative study, carried out with twenty teachers from three different educational contexts: A private school, a language institute and a bachelor’s degree in English program. The instruments that were considered were class observations applied at the beginning of the study, semi-structured interviews applied during the study and a focus group applied at the end of the study. The study showed that in fact, teachers and professors implemented activities to promote interculturality; nevertheless, ICC is seen as part of the foreign languages, neglecting cultural diversity among members of the same mother tongue, it is to say the own culture. Consequently, the implementation of ICC has not been successfully promoted in EFL lessons
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Online social support: an exploratory study of breastfeeding women’s use of internet and mobile applications to obtain peer support
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Online social support is reported to be used by a number of people to obtain social interaction and exchange communication as a way to buffer stressful situations. Breastfeeding women experience a significant change in their lives and routine which a number of women find it stressful for various reasons. Research shows that breastfeeding women use the Internet to obtain support, however little is known about how breastfeeding women use online social support and their perceptions, concerns and expectations about using it.
An interpretive approach using qualitative methods was adopted in this research to obtain and analyse the data acquired through interviews and observations. The framework proposed by the Social Cognitive theory was used to conduct this research and to provide insights into online social support in a breastfeeding peer support context. The results in this research indicate that in spite of face-to-face interventions being favoured, online social support is perceived as a helpful alternative support with the potential to positively influence breastfeeding self-efficacy. A number of similar characteristics of face-to-face support were found to be present in online social support, such as emotional and informational support, empathy and empowerment. Online social support was perceived as offering additional features to traditional support including convenience of use, connection with peers and supporters at any time of the day, and the opportunity to express emotions and issues textually. Certain concerns were also associated to using online social support to support breastfeeding women, which need to be taken into consideration by providers of online social support. These included the need for training volunteers in this type of media, confidentiality and trustworthiness of the information available online and issues related to digital divide. These findings are useful to further the understanding of the implications of online social support in self-efficacy and the associated outcomes. Policy makers, social scientists and breastfeeding support organisations can use the findings in this research to develop future breastfeeding promotion strategies and interventions. Ultimately, breastfeeding women benefit from the findings of this research, through the implementation of online social support interventions addressing the issues raised in this research. These women will consequently have access to more services and applications, as well as engage with volunteers or clinicians trained to fulfil their needs over an alternative channel
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