Automatically combining static malware detection techniques

Malware detection techniques come in many different flavors, and cover different effectiveness and efficiency trade-offs. This paper evaluates a number of machine learning techniques to combine multiple static Android malware detection techniques using automatically constructed decision trees. We identify the best methods to construct the trees. We demonstrate that those trees classify sample apps better and faster than individual techniques alone

Analyse comparative d’une activité d’apprentissage de la programmation en mode branché et débranché

International audienceL’introduction de la programmation à l’école peut être un levier pour développer la penséeinformatique en lien avec une démarche de résolution de problèmes. Dans ce contexte, nous nous intéressonsaux différents types d’activités d’apprentissage de la programmation dans le but d’établir un protocole pourcomparer les activités branchées et débranchées à l’école, et plus particulièrement de voir dans quelle mesureune activité débranchée permet un transfert de compétences vers l’apprentissage de la programmation. Nousdiscutons la méthodologie et les résultats en lien aux observations réalisées au cours des activités deformation Class’Code

BHPR research: qualitative1. Complex reasoning determines patients' perception of outcome following foot surgery in rheumatoid arhtritis

Background: Foot surgery is common in patients with RA but research into surgical outcomes is limited and conceptually flawed as current outcome measures lack face validity: to date no one has asked patients what is important to them. This study aimed to determine which factors are important to patients when evaluating the success of foot surgery in RA Methods: Semi structured interviews of RA patients who had undergone foot surgery were conducted and transcribed verbatim. Thematic analysis of interviews was conducted to explore issues that were important to patients. Results: 11 RA patients (9 ♂, mean age 59, dis dur = 22yrs, mean of 3 yrs post op) with mixed experiences of foot surgery were interviewed. Patients interpreted outcome in respect to a multitude of factors, frequently positive change in one aspect contrasted with negative opinions about another. Overall, four major themes emerged. Function: Functional ability & participation in valued activities were very important to patients. Walking ability was a key concern but patients interpreted levels of activity in light of other aspects of their disease, reflecting on change in functional ability more than overall level. Positive feelings of improved mobility were often moderated by negative self perception ("I mean, I still walk like a waddling duck”). Appearance: Appearance was important to almost all patients but perhaps the most complex theme of all. Physical appearance, foot shape, and footwear were closely interlinked, yet patients saw these as distinct separate concepts. Patients need to legitimize these feelings was clear and they frequently entered into a defensive repertoire ("it's not cosmetic surgery; it's something that's more important than that, you know?”). Clinician opinion: Surgeons' post operative evaluation of the procedure was very influential. The impact of this appraisal continued to affect patients' lasting impression irrespective of how the outcome compared to their initial goals ("when he'd done it ... he said that hasn't worked as good as he'd wanted to ... but the pain has gone”). Pain: Whilst pain was important to almost all patients, it appeared to be less important than the other themes. Pain was predominately raised when it influenced other themes, such as function; many still felt the need to legitimize their foot pain in order for health professionals to take it seriously ("in the end I went to my GP because it had happened a few times and I went to an orthopaedic surgeon who was quite dismissive of it, it was like what are you complaining about”). Conclusions: Patients interpret the outcome of foot surgery using a multitude of interrelated factors, particularly functional ability, appearance and surgeons' appraisal of the procedure. While pain was often noted, this appeared less important than other factors in the overall outcome of the surgery. Future research into foot surgery should incorporate the complexity of how patients determine their outcome Disclosure statement: All authors have declared no conflicts of interes

Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study

Background: The impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on postoperative recovery needs to be understood to inform clinical decision making during and after the COVID-19 pandemic. This study reports 30-day mortality and pulmonary complication rates in patients with perioperative SARS-CoV-2 infection. Methods: This international, multicentre, cohort study at 235 hospitals in 24 countries included all patients undergoing surgery who had SARS-CoV-2 infection confirmed within 7 days before or 30 days after surgery. The primary outcome measure was 30-day postoperative mortality and was assessed in all enrolled patients. The main secondary outcome measure was pulmonary complications, defined as pneumonia, acute respiratory distress syndrome, or unexpected postoperative ventilation. Findings: This analysis includes 1128 patients who had surgery between Jan 1 and March 31, 2020, of whom 835 (74·0%) had emergency surgery and 280 (24·8%) had elective surgery. SARS-CoV-2 infection was confirmed preoperatively in 294 (26·1%) patients. 30-day mortality was 23·8% (268 of 1128). Pulmonary complications occurred in 577 (51·2%) of 1128 patients; 30-day mortality in these patients was 38·0% (219 of 577), accounting for 81·7% (219 of 268) of all deaths. In adjusted analyses, 30-day mortality was associated with male sex (odds ratio 1·75 [95% CI 1·28–2·40], p\textless0·0001), age 70 years or older versus younger than 70 years (2·30 [1·65–3·22], p\textless0·0001), American Society of Anesthesiologists grades 3–5 versus grades 1–2 (2·35 [1·57–3·53], p\textless0·0001), malignant versus benign or obstetric diagnosis (1·55 [1·01–2·39], p=0·046), emergency versus elective surgery (1·67 [1·06–2·63], p=0·026), and major versus minor surgery (1·52 [1·01–2·31], p=0·047). Interpretation: Postoperative pulmonary complications occur in half of patients with perioperative SARS-CoV-2 infection and are associated with high mortality. Thresholds for surgery during the COVID-19 pandemic should be higher than during normal practice, particularly in men aged 70 years and older. Consideration should be given for postponing non-urgent procedures and promoting non-operative treatment to delay or avoid the need for surgery. Funding: National Institute for Health Research (NIHR), Association of Coloproctology of Great Britain and Ireland, Bowel and Cancer Research, Bowel Disease Research Foundation, Association of Upper Gastrointestinal Surgeons, British Association of Surgical Oncology, British Gynaecological Cancer Society, European Society of Coloproctology, NIHR Academy, Sarcoma UK, Vascular Society for Great Britain and Ireland, and Yorkshire Cancer Research

« La vie HLM. Histoires d’habitant•e•s de logements populaires. Aubervilliers, 1950-2000 », 8 allée Charles Grosperrin, Aubervilliers

International audienceLaurent Coudroy de Lille et Charlotte Vorms en entretien avec Muriel Cohen, maîtresse de conférences à l’université du Mans, Cédric David, chercheur associé au Centre d’Histoire Sociale et professeur d’histoire-geographie en collège à Saint-Denis, Sébastien Radouan, chargé de la coordination scientifique de l’AMuLoP et MCF associé à l’Ecole d’architecture de Paris-La Villett

Promoción de la salud: hábitos de vida saludable en estudiantes de preparatorias, estudio diagnóstico

Although health is a dynamic concept, it is usually approached from the point of view of loss (diseases or risk factors). Health Promotion recognizes this concept in a positive way and focuses on the factors that contribute to it, seeking that all people develop their greatest health potential taking into account the assets of the community and the underlying social conditions that determine a better health. or worse health (the Social Determinants of Health). The objective of this article focuses on knowing the life habits of students in two high school schools to formulate a comprehensive diagnosis oriented under the focus of health promotion. For this purpose, three instruments were used: the Health and Healthy Habits Battery, the Perceived Stress Scale (PSS-14) and the Beck Depression Inventory in a sample of 67 adolescents from Yucatán. The results generally describe the quality of life habits through different dimensions: sports and outdoor activities; healthy behavior and disease recurrence; use and abuse of harmful substances; rest and quality of sleep; feeding; recreation; sexual health; perceived stress and depression.Aunque la salud es un concepto dinámico, habitualmente se aborda desde la visión de pérdida (enfermedades o factores de riesgo). La Promoción de la Salud reconoce este concepto de manera positiva y se centra en los factores que contribuyen a ella, buscando que todas las personas desarrollen su mayor potencial de salud tomando en cuenta los activos de la comunidad y las condiciones sociales subyacentes que determinan una mejor o peor salud (los Determinantes Sociales de la Salud). El objetivo del presente artículo se enfoca en conocer los hábitos de vida de los estudiantes en dos planteles de educación preparatoria para formular un diagnóstico integral orientado bajo el enfoque de la promoción de la salud. Para ello se utilizaron tres instrumentos: la Batería de Salud y Hábitos Saludables, la Escala de Estrés Percibido (PSS-14) y el Inventario de Depresión de Beck en una muestra de 67 adolescentes de Yucatán. Los resultados describen de manera general la calidad de los hábitos de vida a través de diferentes dimensiones: deportes y actividad al aire libre; conducta saludable y recurrencia de la enfermedad; uso y abuso de sustancias nocivas; descanso y calidad del sueño; alimentación; recreación; salud sexual; estrés percibido y depresión