306 research outputs found
Making ends meet in the shipbuilding industry of Piraeus. An ethnography of precarious employment
Στο παρόν κείμενο διερευνώ τον τρόπο με τονοποίο οι εργαζόμενοι στη ναυπηγική βιομηχανία επιχειρούν να αντιμετωπίσουν την εργασιακή τους επισφάλεια στο πλαίσιο των ναυπηγικών δραστηριοτήτων που λαμβάνουν χώραστην περιοχή του Περάματος. Δίδεται έμφασηστο πώς οι εργαζόμενοι αυτοί αντιλαμβάνονταιτην εμπλοκή τους στις τοπικές διαδικασίες εργασίας και για το λόγο αυτό εστιάζω στις κοινωνικές σχέσεις που αναπτύσονται κατά τη διαδικασία διαχείρισης της ύπαρξής τους.In this paper I address the way shipbuildingworkers attempt to cope with employmentprecariousness in the context of shipbuildingactivities in the workplace of Perama zone,a suburb of western Piraeus area. Addedemphasis is placed on how workers conceiveof their involvement into local labourprocesses and for this reason I focus on thesocial relations developed during the processof managing their existence
Making ends meet in the shipbuilding industry of Piraeus. An ethnography of precarious employment
Στο παρόν κείμενο διερευνώ τον τρόπο με τονοποίο οι εργαζόμενοι στη ναυπηγική βιομηχανία επιχειρούν να αντιμετωπίσουν την εργασιακή τους επισφάλεια στο πλαίσιο των ναυπηγικών δραστηριοτήτων που λαμβάνουν χώραστην περιοχή του Περάματος. Δίδεται έμφασηστο πώς οι εργαζόμενοι αυτοί αντιλαμβάνονταιτην εμπλοκή τους στις τοπικές διαδικασίες εργασίας και για το λόγο αυτό εστιάζω στις κοινωνικές σχέσεις που αναπτύσονται κατά τη διαδικασία διαχείρισης της ύπαρξής τους.In this paper I address the way shipbuildingworkers attempt to cope with employmentprecariousness in the context of shipbuildingactivities in the workplace of Perama zone,a suburb of western Piraeus area. Addedemphasis is placed on how workers conceiveof their involvement into local labourprocesses and for this reason I focus on thesocial relations developed during the processof managing their existence
From security to precariousness: The case of the Greek mass media sector in neoliberal times
Το άρθρο εστιάζει στον τρόπο με τον οποίο πρώην εργαζόμενοι στα Μέσα Mαζικής Ενημέρωσης βίωσαν το πέρασμα από μια ασφαλή εργασιακήσχέση στην επισφάλεια. Βασίζεται σε εθνογραφική έρευνα δεκατεσσάρων μηνών (Αύγουστος 2012 – Οκτώβριος 2013) στον τηλεοπτικό σταθμό ALTER TV. Επιπλέον διενεργήθηκαν δεκαπέντε ημι-δομημένες συνεντεύξεις με εργαζόμενους. Στα συμπεράσματα του άρθρου εξετάζεται η διαμόρφωση ενός νέου τύπου εργασιακού υποκειμένου μέσα από: α) την επανεπινόηση ξεχασμένων οικονομικών διαδικασιών, β) την κινητοποίηση κάθε κοινωνικού δικτύου για την αντιμετώπιση της επισφάλειας και γ) την κριτική απέναντι στο λεγόμενο «παλιομοδίτικο συνδικαλισμό».The paper focuses on the way ex-mass media employees experienced a dramatic passage from safe employment to a precarious condition.It is based on fourteen months ethnographic research (August 2012 to October 2013) in the closing premises of the ALTER TV Channel. In addition, fifteen semi–structured interviews were conducted with employees. In the concluding remarks a new type of working subject is questioned through a) the ‘reinvention’ of forgotten economic processes, b) the motivation of any social network to cope with precariousness and c) the critique of the so called ‘old fashioned’ syndicalism
An unusual case of intestinal obstruction by volvulus of Meckel’s diverticulum in a 10-year-old child: a case report
Intestinal obstruction, gastrointestinal haemorrhage, adherence, intussusception, acute diverticulitis and rarely malignity are the most common complications of Meckel’s diverticulum in children. Reported mechanism of intestinal obstruction in Meckel’s diverticulum include invagination, adherence and volvulus. Obstructive ileum caused by volvulus of Meckel’s diverticilum is not a very frequent medical condition. Here we describe a case of intestinal obstruction caused by volvulus of non-inflamed Meckel’s diverticulum in a 10-year-old child. Considering the potentially life-threatening obstructive ileum in cases of children with deteriorating clinical picture, surgical exploration should not be delayed
A rare case of pontocerebellar hypoplasia type 1B with literature review
A full-term female newborn was transferred to our neonatal intensive care unit (NICU) on day two of life for hypotonia. Physical examination was significant for overriding sutures, displaced small anterior fontanelle, axial hypotonia, extremity hypertonia, and slow deep tendon reflexes. She was also noted to have stridor with crying but had unlabored breathing without oxygen requirements and a normal heart examination. A brain magnetic resonance imaging (MRI) showed a large cisterna magna and cerebellar hypoplasia with the majority of the cerebellar vermis present, suggesting a possible Dandy-Walker variant (cerebellar vermis hypoplasia). Head computed tomography showed areas of close approximation of coronal sutures and no synostosis. During the NICU stay, our patient was evaluated by Pediatric Neurology who recommended a chromosomal microarray which returned normal. The patient also had some difficulty feeding initially, but she was able to feed efficiently and gain weight by the time of discharge. After discharge from NICU, her neurological status steadily declined, resulting in poor motor function and poor suck despite regular physical therapy, occupational therapy, and speech therapy. By three months of age, she developed failure to thrive and was admitted to the hospital for evaluation of the cause. Her neurological examination showed worsening of her axial hypotonia with very little movement in the upper extremities and hypertonia in the lower extremities. She had a weak suck with the inability to form a good seal on the nipple. A new heart murmur was noted and an echocardiogram showed a moderate-to-large atrial septal defect. A modified barium swallow study showed severe dysphagia for which she required gastrostomy tube placement for feeding. At follow-up with Neurology, she was noted to have progressive microcephaly, profound hypotonia, areflexia, and nystagmus. A second MRI showed worsening atrophy and increasing ventriculomegaly. By nine months of age, she developed respiratory failure, required a tracheostomy, and remained ventilator-dependent. Genetics was then consulted and recommended a brain malformation genetic panel. The patient was found to be heterozygous for two pathogenic variants in th
Developing heuristics for Web communication: an introduction to this special issue
This article describes the role of heuristics in the Web design process. The five sets of heuristics that appear in this issue are also described, as well as the research methods used in their development. The heuristics were designed to help designers and developers of Web pages or sites to consider crucial communicative aspects of Web site design. Also previewed is a sixth article that presents a framework for characterizing and analyzing the broad variety of heuristics that are available for Web designers
Skarn rico em ferro associado ao sienito linda vista, segmento anicuns-itaberaí do arco magmático Goiás : mineralogia, metassomatismo e geoquímica isotópica
Dissertação (mestrado) — Universidade de Brasília, Instituto de Geociências, Programa de Pós-Graduação em Geologia, 2021.Skarns são um tipo de rocha definida essencialmente por sua mineralogia, em geral,
predominantemente calcissilicática como granada e piroxênio. Estão presentes em todos os
continentes e em rochas de quase todas as idades. Skarns são relacionados a processos
metassomáticos, podendo estar envolvido com grande diversidade de fluidos (magmático,
metamórfico, meteórico e de origem marinha). O Skarn Linda Vista, localizado no Orógeno
Brasília, representa uma ocorrência inédita no contexto do Arco Magmático de Goiás,
constituindo um modelo clássico de skarn, com sua gênese relacionada a um plutón (Sienito
Linda Vista) tardi-tectônico (649 ± 3.2 Ma) em meio a encaixantes (principalmente mármores
e magnetita-quartzitos) da sequência metavulcanossedimentar Anicuns-Itaberaí. O contato
entre plutón e encaixantes desenvolve uma série de processos isoquímicos e metassomáticos,
com destaque para o enriquecimento em Ferro no interior da intrusão, descrevendo um
endoskarn.
O Skarn Linda Vista é, essencialmente, descrito como um endoskarn rico em ferro com
associação característica de magnetita-clinopiroxênio (aegirina-augita). Contudo, há zonas
discretas, próximas ao contato com mármores, onde se desenvolvem rochas ricas em flogopita
e rochas calcissilicáticas (skarnóide calcissilicático). Observações petrográficas e análises de
química mineral permitiram discriminar estágios relacionados à formação do skarn. Foram
descritos 3 principais estágios: (1) estágio progressivo isoquímico, onde não há mistura
composicional das rochas em contato, marcada pela formação de tremolita em mármores
dolomíticos recristalizados; (2) estágio progressivo metassomático, representado no endoskarn
pela formação em larga escala pela associação magnetita-clinopiroxênio e formação de rochas
ricas em flogopita na zona de contao com mármores; (3) estágio retrógrado, onde há
substituição das mineralogias anteriores por fases hidratadas de baixa temperatura, com
riebeckita, clorita e martitização da magnetita no endoskarn, assim como desenvolvimento das
assembleias calcissilicáticas associadas a sulfetação na zona de contato com mármores.
As rochas do endoskarn fornecem claras evidências de um intenso Fe-metassomatismo
com substituição das assembleias originalmente ígneas do Sienito Linda Vista pela associação
magnetita-clinopiroxênio. A origem desse ferro pode ser explicada pela possível solubilização
dos magnetita-quartzito encaixantes a intrusão atráves de fluidos ricos em HCl, que complexam
o ferro sob a forma de FeCl2.
Dados isotópicos de Carbono e Oxigênio também revelam importantes aspectos para
modelar o contato entre sienito e mármores, de acordo com curvas de Batch (sistema fechado)
e Rayleigh (sistema aberto), para devolatilização de CO2 no estágio progressivo isoquímico,
onde predomina as feições de metamorfismo de contato por meio de decomposição de calcita
e reações calcissilicáticas em alta temperatura.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) e Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).Skarns are rocks defined essentially by their mineralogy, in general, predominantly calcsilicate minerals as Ca-rich garnet and pyroxene. Moreover, skarns are largely confined across
all continents and in rocks of almost all ages. These occurrences are related to metasomatic
processes and may be involved with a great diversity of fluids (magmatic, metamorphic,
meteoric, and marine sources). Linda Vista Skarn, located in the Brasília Orogen, represents an
unprecedented occurrence in the context of the Goiás Magmatic Arc, constituting a classic skarn
model, with its genesis related to a post-tectonic intrusion (Linda Vista Syenite; 649 ± 3.2 Ma)
into the basement (mainly marbles and magnetite-quartzites of the Anicuns-Itaberaí
metavolcano-sedimentary sequence). The contact between pluton and basement rocks develops
a series of isochemical and metasomatic processes with emphasis on the iron enrichment inside
the intrusion, describing an endoskarn.
Linda Vista occurrence is essentially described as an iron-rich endoskarn with a typical
magnetite-clinopyroxene association (aegirine-augite). However, discrete zones are observed
close to the contact with marbles, where phlogopite-rich rocks and calc-silicate rocks
(hornblende-epidote calc-silicate) develop. Petrographic observations and mineral chemistry
analyses allowed to discriminate three main stages related to skarn formation: (1) Isochemical
progressive stage, where there is no compositional mixing of rocks in contact, characterized by
the neoformed tremolite in recrystallized dolomitic marble; (2) Progressive metasomatic stage,
represented in the endoskarn by the large scale formation of the magnetite-clinopyroxene
association and the formation of phlogopite-rich rocks in the marble contact zone; (3)
Retrograde stage, where previous mineralogies are replaced by hydrated low-temperature
phases, with riebeckite, chlorite, and magnetite martitization in the endoskarn, as well as the
development of calc-silicate assemblages associated with sulfidation in the marble contact
zone.
The endoskarn rocks provide clear evidence of an intense Fe-metasomatism with
replacement of the originally igneous assemblages of Linda Vista Syenite by the magnetiteclinopyroxene association. This iron origin may be explained by the possible solubilization of
the magnetite-quartzite basement rocks through HCl-rich fluids, which triggers the
complexation of iron in the FeCl2 form.
Carbon and Oxygen isotopic data also reveal important aspects to model the contact
between syenite and marbles, according to Batch (closed system) and Rayleigh (open system)
curves for CO2 devolatilization in the isochemical progressive stage, where contact
metamorphism features predominate through calcite decomposition and calc-silicate hightemperature reactions
Redefining Success: How Tribal Colleges and Universities Build Nations, Strengthen Sovereignty, and Persevere Through Challenges
After enduring nearly 400 years of higher education efforts driven by religious indoctrination and forced assimilation, in 1968 Diné College opened its doors as the first Tribally controlled post-secondary institution, marking a new era of self-determination for Native American students. Since then, Tribal Colleges and Universities (TCUs) have grown to include 37 institutions, serving over 28,000 students and are actively working to revitalize Native languages and culture, promote Tribal sovereignty and further economic growth aligned with Tribal values in the communities they serve. These remarkable institutions often go unrecognized for their achievements, and most remain unjustly underfunded in spite of the fact that their work redefines the valuable impact that higher institutions can have within their local communities.We hope to support the Tribal Colleges and Universities, their membership association, the American Indian Higher Education Consortium (AIHEC), and their non-profit support organization, the American Indian College Fund (College Fund), by reframing the conversation and reminding critics that TCUs were not created to serve the same purpose as other higher education institutions. Rather, TCUs were created for the purpose of supporting Tribal Nation-building after Indigenous cultures endured generations of cultural and economic deterioration. This report offers an alternative story of success that looks beyond quantifiable measures to focus more deeply on how these schools meet this mission. We hope to draw additional attention to the many challenges that TCUs face, such as underfunding and operating in geographically remote areas, and outline the strategies they have employed to find success in spite of these challenges. Lastly, we make recommendations to help policy makers and institutional leaders support and strengthen these institutions and the students they serve
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