Search results for "ULN"
showing 10 items of 1078 documents
Algorithmic Complexity Vulnerability Analysis of a Stateful Firewall
2016
Algorithmic complexity vulnerabilities are an opportunity for an ad-versary to conduct a sophisticated kind of attack i.e. on network infrastructure services. Such attacks take advantage of worst case time or space complexity of algorithms implemented on devices in their software. In this paper we address potential risks introduced by such algorithmic behavior in computer networks in particular on a stateful firewall. First we introduce the idea and theoretical background for the attack. We then describe in full detail a successfully con-ducted attack which takes advantage of the worst case computational complexi-ty of O(n2) of a hash table data structure used to store active sessions. The …
Drought-related cholera outbreaks in Africa and the implications for climate change: a narrative review.
2021
ABSTRACT Africa has historically seen several periods of prolonged and extreme droughts across the continent, causing food insecurity, exacerbating social inequity and frequent mortality. A known consequence of droughts and their associated risk factors are infectious disease outbreaks, which are worsened by malnutrition, poor access to water, sanitation and hygiene and population displacement. Cholera is a potential causative agent of such outbreaks. Africa has the highest global cholera burden, several drought-prone regions and high levels of inequity. Despite this, research on cholera and drought in Africa is lacking. Here, we review available research on drought-related cholera outbreak…
La construcción de subjetividades en itinerarios de fracaso escolar. Itinerarios de inserción sociolaboral para adolescentes en riesgo
2016
RESUMEN La modernización del sistema de Formación Profesional del Estado español se remonta a los años 90. Desde entonces, ha evolucionado significativamente, teniendo los desarrollos europeos como marco de referencia. Con la extensión de la escolarización hasta los 16 años, se introdujo en el año 1994 un tipo de formación profesionalizadora de muy bajo nivel de cualificación, especialmente diseñada para los adolescentes clasificados como de bajo rendimiento académico en Educación Secundaria y para aquellos en situación de vulnerabilidad social. Esta formación fue rediseñada en 2006 y en 2013. Nuestra contribución, enmarcada en una investigación más amplia desarrollada en el seno de un proy…
Predicting Mathematics Achievement in Secondary Education: The Role of Cognitive, Motivational, and Emotional Variables.
2020
Academic achievement in general, and in mathematics in particular, is positively associated not only with cognitive abilities, but also with emotional and motivational skills. The objective of this study was to analyze the prediction strength of cognitive, motivational, and emotional variables in mathematics achievement throughout high school, considering students' gender and age. A large sample of 2,365 Spanish students from the 4 years of high school (12-16 years old) participated in the study. Students provided information about their intellectual skills, perceived competence in mathematics, perceived utility of mathematics, intrinsic interest in learning, mathematics anxiety, and their …
Le cause di giustificazione della responsabilità civile e la nuova legittima difesa
2020
the essay addresses the problem of wrongfulness in torts and analyzes the recent reform of self-defense. In particular, the study highlights the effects on the structure of tort liability of the expansion of the area of necessary and proportional behavior. The essay aims to offer a systematic picture of the justifications in tort liability
La problemàtica social de les persones sense llar: causes, consum de substàncies i percepció de salut
2015
La situació de les persones sense llar és l'expressió més greu dels fenòmens d'exclusió social i afecta un nombre cada vegada major de subjectes i grups que sofreixen situacions molt greus de pobresa severa, marginació i abandó condicionats en major mesura per factors estructurals. En aquesta investigació es vol analitzar el fenomen del «sensellarisme» a escala individual, relacional i estructural, mitjançant diverses variables d'interès en una mostra de 40 homes que es troben en l'actualitat en alguns dels recursos del Centre de Serveis Socials Sant Joan de Déu, situat a València. El fenomen de les persones sense llar és un problema complex, dinàmic i multifactorial en el qual intervenen m…
Potentially human-virulent Vibrio vulnificus isolates from diseased great pompano (Trachinotus goodei).
2019
Vibrio vulnificus is an opportunistic human pathogen responsible for the majority of seafood-associated deaths worldwide and is also a relevant fish pathogen for the aquaculture industry. In addition to infections in aquatic livestock, V. vulnificus also represents a risk to aquarium animals. For the first time, this work describes an important mortality outbreak in Trachinotus goodei in a zoo aquarium, with the isolation of Vibrio vulnificus (Vv) from the internal organs of the diseased fish. The isolates were identified by MALDI-TOF MS, serotyped and characterized by pulsed-field gel electrophoresis (PFGE). Although the isolates from great pompanos did not belong to pathovar piscis (forme…
Isolation of Vibrio vulnificus Serovar E from Aquatic Habitats in Taiwan
1999
ABSTRACT The existence of strains of Vibrio vulnificus serovar E that are avirulent for eels is reported in this work. These isolates were recovered from water and oysters and differed from eel virulent strains in (i) fermentation and utilization of mannitol, (ii) ribotyping after Hin dIII digestion, and (iii) susceptibility to eel serum. Lipopolysaccharide of these strains lacked the highest molecular weight immunoreactive bands, which are probably involved in serum resistance.
First description of nonmotileVibrio vulnificusstrains virulent for eels
2007
Nonmotile Vibrio vulnificus strains were isolated as pure cultures from body ulcers and internal organs of wild diseased European eels caught in a Mediterranean freshwater coastal lagoon. All 54 V. vulnificus isolates were nonmotile, indole-, ornithine decarboxilase-, mannitol- and cellobiose-positive, developed the opaque variant in culture, belonged to the O-antigenic serovar A and were highly virulent for eels by both intraperitoneal injection and immersion challenges. The nonmotile phenotype found in our V. vulnificus isolates was stable: nonmotile cells were always recovered from experimentally infected eels; no variation in the immobility of the V. vulnificus cells was observed for re…
Phenotypic and genotypic characterization of a new fish-virulent Vibrio vulnificus serovar that lacks potential to infect humans.
2007
Vibrio vulnificus is a bacterial species that is virulent for humans and fish. Human isolates are classified into biotypes 1 and 3 (BT1 and BT3) and fish isolates into biotype 2 (BT2). However, a few human infections caused by BT2 isolates have been reported worldwide (zoonosis). These BT2 human isolates belong to serovar E (SerE), which is also present in diseased fish. The aim of the present work was to characterize a new BT2 serovar [serovar A (SerA)], which emerged in the European fish-farming industry in 2000, by means of phenotypic, serological and genetic [plasmid profiling, ribotyping and random amplified polymorphic DNA (RAPD)] methodologies. The results confirmed that SerA constit…