786 research outputs found
L'appropriation des technologies du web 2.0 dans les rédactions locales : l'exemple de Nicematin.com
International audienceL'appropriation des technologies du web 2.0 dans les rédactions locales : l'exemple de Nicematin.com Résumé : A l'heure de la globalisation et des médias des masses, la presse quotidienne régionale est en voie de perdre l'exclusivité de l'information de proximité qu'elle compense par des dispositifs participatifs. Ces derniers la placent dans une configuration qui favorise la sédentarisation, voire la redéfinition du projet éditorial sur des bases marketing et financière. Dans une perspective éditoriale et technologique, le web 2.0 inscrit le journaliste dans un double mouvement de territorialisation et de dé-territorialisation de l'information dans les réseaux. Summary : In times of globalisation and mass medias (social medias), the regional daily press is starting to lose its exclusivity regarding local information, which it compensates with participatory mechanisms. The Internet media sets online press in a configuration which favours sedentary work and even the redefining of the editorial project on marketing and financial bases. From an editorial and technological perspective, the web 2.0 encloses the journalist in a double movement of territorialization and deterritorialization of the information in the networks. We can conclude that the web 2.0 has not really allowed for the renewal of journalism, be it in its technological or in its editorial dimensions, even if we are starting to witness timid attempts at innovation
Acoustic waves attenuation and velocity dispersion in fluid-filled porous media: theoretical and experimental investigations
New model of acoustic wave propagation in saturated porous media is developed. Like the Biot/Squirt flow (BISQ) theory it combines both the Biot and Squirt flow mechanisms. The novelty in this model is that the expression of average pore fluid pressure is independent of the characteristic squirt flow length introduced in the BISQ theory. Taking advantage of t he analytical relation between velocity (attenuation) and measurable rock physical parameters such as permeability, porosity, Pore fluid viscosity and compressibility, velocity and attenuation dispersion versus frequency is modelled for different permeability values: 1.25 md, 5 md, 10 md and 20 md. The results using the proposed model and the earlier BISQ theory show the same order of magnitude in attenuation and velocity dispersion versus frequency but reverse behaviour with respect to permeability change. An attempt to determine permeability using both theories on experimental data from highly permeable beach sands (unlithified) material shows good agreement with laboratory measured values. Ultrasonic data acquired on two different sets of sandstone samples are compared to velocity and attenuation prediction from the Biot/Squirt flow (BISQ) model and our newly proposed model. Our model better resolves measured velocity from the first set of sandstone samples. The attenuation however is highly underestimated by both models. In the second set of samples, the Gassmann's velocity is calculated from measured dry P- and S-wave velocities at different confining pressures and is compared to the result of low-frequency velocity prediction from the previous models. It was expected that velocity predicted by both models converges to the Gassmann's velocity at confining pressure high enough to suppress the squirt flow effect. Despite evidence (from the velocity vs. confining pressure curves) of the closure of microcracks that enhance the squirt flow effect the Gassmann's velocity was still much larger than other models prediction. We argue that evidence of clay inclusion in the sandstone matrix might be responsible for the poor resolution of attenuation in the former set of samples, and the misfit between velocities in the second set. Qualitative agreement was observed between velocity dispersion estimated from field experimental data and theoretical prediction using the reformulated BISQ model
Software Engineering Department Master Thesis
Son zamanlarda yapay zeka (AI), sunduğu çözümler nedeniyle bilimsel araştırmaların tüm alanlarını işgal etti. Sağlık da bir istisna değil. Diyabet dünyadaki en yaygın hastalıklardan biridir. Komplikasyonlarından biri, hastanın görüşünü bulanıklaştırabilen veya bozabilen ve körlüğün ana nedenlerinden biri olan diyabetik retinopatidir. Diyabetik retinopatinin erken teşhisi tedaviye büyük ölçüde yardımcı olabilir. Yapay Zeka ve özellikle derin öğrenme alanındaki son gelişmeler, birçok hastalığı erken evrelerinde tahmin etmek, öngörmek ve teşhis etmek için kullanılabilecek iddialı çözümler sunmaktadır. Son yıl projemizde, retina görüntülerini analiz etmek için derin öğrenmenin potansiyelini araştırdık. Diyabetik retinopati seviyelerini otomatik olarak tespit etmemizi ve sınıflandırmamızı sağlayacak bir model oluşturmak için Derin Öğrenme (DL) kavramlarını bir konvolüsyonel sinir ağı (CNN) algoritması ile inceleyeceğiz. Göz ve diyabetik retinopati, ardından farklı diyabetik retinopati türleri, diyabetik retinopatinin nedenleri, önlenmesi, teşhisi ve uygun tedavisi hakkında bir sunum yapacağız. Modellerimizi eğitmek için herkesin erişebileceği bir platform olan Google Colab'ı kullanacağız
Maritime safety administration in Guinea
The objective of the research covered by this paper is to describe the Guinean Maritime Safety Administration as it presently exists and to identify the particular process of development that may be needed. The paper will begin by outlining the geographical features of the Republic of Guinea as regards its water transport system, continue with a general description of the maritime administration, then describes the Maritime Safety Administration in more detail including related matters. Conclusions are then formulated and recommendations concerning future developments proposed
Association between Socio economic Factors and Contraceptive Use among Married Women in Guinea and Mali: An Examination of the Demographic and Health Survey Data 2018
Introduction: Unintended pregnancies and unsafe abortions can seriously affect any sexually active women and have negative impacts on their personal and conjugal life, their families, and societies. unsafe abortions cause the death of thousands of women every year and lead millions more to suffer long-term reproductive problems, including infertility. Rarely any study has explored and compared the prevalence and associated factors of contraceptive use among married women in these two countries. AIM: Therefore, this study seeks to determine the association between socio economic factors and contraceptive use in two sub-Saharan African countries: Guinea and Mali. METHODS: Relevant data on contraceptive use among married women was extracted from the Guinean and Malian 2018 Demographic and Health Survey. Quantitative data was analyzed using the IBM SPSS STATISTICS version 28.0.1.1
RESULTS:89% of our respondents from Guinea and 85% of those from Mali were using no contraceptives. 35% of Malians had the intention to use it later against only 21% from Guinea and difference was statistically significant(p
contraceptives (OR=1.37; 95% CI 1.26-1.49) as compared to Mali and the difference was statistically significant at p \u3c 0.001. This is a critical finding compared to the univariate analysis. The poorest are more likely to use contraceptives than other classes; followed by the poorer and the difference was statistically significant. DISCUSSION: In Guinea and Mali, wealth and education have been consistently found to be positively associated with contraceptive use. These findings are constant with previous studies indicating that wealth and education have been reliably found to be completely correlated contraceptive use [Budu et al., 2022]. This may be due to the fact that rich people have more access to health facilities and health education. These results strongly advocate that educational programs should target the poor and those with low educational attainment to encourage family planning
Facteurs prédictifs de l’échec de traitement antituberculeux en Guinée Conakry
La tuberculose est un véritable problème de santé publique. C'est une maladie guérissable et cette guérison passe par une bonne prise en charge thérapeutique. Il arrive parfois on assiste à l'échec thérapeutique, d'où l'intérêt de notre étude portant sur les facteurs prédictifs de ses échecs. Dans l'espace d'une année sur 1300 cas de tuberculose toute forme confondue, 700 cas de tuberculose pulmonaire à microscopie positive ont été répertorié dont 100 cas transférés. La tranche d'âge de 15-25 ans a été la plus touchée avec un sexe-ratio de 2 en faveur des hommes et 41,66% de nos malades ont été les ouvriers suivis de 20,83% des commerçants. La majorité de nos patients provenait de Conakry soit 99, 5%. Sur 600 patients suivis les nouveaux cas représentaient 83,33% et l'échec thérapeutique représentait 12 cas soit 2%. L'interruption du traitement représente le principal facteur de l'échec. Les facteurs qui ont influencé la régularité des malades au traitement ont été multiples. Des facteurs liés à l'organisation du système de santé, la rupture des médicaments antituberculeux, l'éducation sanitaire insuffisante, les contraintes de la supervision du traitement, l'implication insuffisante et la vente des médicaments par le personnel de santé. Des facteurs liés aux patients euxmêmes, la crainte de perte d'emploi, les contraintes financières. Les renforcements de l'organisation du système sanitaire et l'éducation thérapeutiques pourront réduire le taux d'échec du traitement antituberculeux. L'amélioration de la qualité de la prise en charge des malades en situation d'échec devrait passer par une culture systématique des expectorations avec antibiogramme.Key words: Facteurs prédictifs, Echec, Antituberculeux, Tuberculose.
Obstetrical complications among adolescent girls at the maternity ward of Ignace Deen National Hospital
Background: The objective of this study was to highlight obstetrical complications that occurred among adolescent girls who delivered at the ward and to identify factors associated with the occurrence of such complications.Methods: This was a prospective study of descriptive and analytical type extending over a period of one year from September 1, 2016 to August 31, 2017 carried out at the maternity ward of Ignace Deen National Hospital at Conakry Teaching Hospital (CHU). It covered a continuous series of 1034 deliveries among adolescent girls.Results: The frequency of childbirth among adolescent girls was 16.7%. The main complications identified were dystocia, severe preeclampsia, eclampsia, retroplacental hematoma, placenta previa, uterine rupture, severe anemia, postpartum hemorrhage and puerperal endometritis. These complications occurred among adolescent girls aged 18 to 19, christian, skin and pelvic bones secondary school or university students. Factors associated with such complications were the marital status (p=0.010), the gestational age (p=0.012), the number of prenatal consultations (p=0.001), the place of prenatal consultation (p=0.001), the reason for admission (p=0.000) and the mode of admission (p=0.000).Conclusions: Childbirth among adolescent girls is frequent in this context; complications are numerous but they are preventable in the vast majority of cases
Computational Study of Copper(II) Complexation and Hydrolysis in Aqueous Solutions Using Mixed Cluster/Continuum Models
We use density functional theory (B3LYP) and the COSMO continuum solvent model to characterize the structure and stability of the hydrated Cu(II) complexes [Cu(MeNH_2)(H_2O)_(n−1)]^(2+) and [Cu(OH)_x(H_2O)_(n−x)]^(2−x) (x = 1−3) as a function of metal coordination number (4−6) and cluster size (n = 4−8, 18). The small clusters with n = 4−8 are found to be the most stable in the nearly square-planar four-coordinate configuration, except for [Cu(OH)_3(H_2O)]^−, which is three-coordinate. In the presence of the two full hydration shells (n = 18), however, the five-coordinate square-pyramidal geometry is the most favorable for Cu(MeNH_2)^(2+) (5, 6) and Cu(OH)^+ (5, 4, 6), and the four-coordinate geometry is the most stable for Cu(OH)_2 (4, 5) and Cu(OH)_3^− (4). (Other possible coordination numbers for these complexes in the aqueous phase are shown in parentheses.) A small energetic difference between these structures (0.23−2.65 kcal/mol) suggests that complexes with different coordination numbers may coexist in solution. Using two full hydration shells around the Cu^(2+) ion (18 ligands) gives Gibbs free energies of aqueous reactions that are in excellent agreement with experiment. The mean unsigned error is 0.7 kcal/mol for the three consecutive hydrolysis steps of Cu^(2+) and the complexation of Cu^(2+) with methylamine. Conversely, calculations for the complexes with only one coordination shell (four equatorial ligands) lead to a mean unsigned error that is >6.0 kcal/mol. Thus, the explicit treatment of the first and the second shells is critical for the accurate prediction of structural and thermodynamic properties of Cu(II) species in aqueous solution
Profil Evolutif et Comorbidités des Troubles Fonctionnels Intestinaux (TFI) Persistants au CHU de Conakry
Introduction : Les troubles fonctionnels digestifs (TFI) ou syndrome de l’intestin irritable représentent un véritable problème de santé publique. Si cette affection n’engage pas le pronostic vital, elle altère significativement et de façon chronique la qualité de vie des malades. L’étiologie est mal connue et de nombreux facteurs sont impliqués.
Méthodes : Il s’agissait d’une étude transversale descriptive à recueil prospectif de données réalisée en consultation externe du service d’hépato-gastroentérologie de l’hôpital national Donka du CHU de Conakry allant du 1er Janvier 2019 au 31 Décembre 2020 chez les patients souffrants de TFI et répondant aux critères de Rome IV.
Résultats : Trois cent quatre-vingt-dix-huit cas de SII sur 1309 patients soit une prévalence de 30,40%. On notait une prédominance féminine avec un sex ratio de 0,92. L’âge moyen de nos patients était de 49 ans avec des extrêmes de 10 et 88 ans. Les tranches d’âge de 25-34 ans et 35-44 ans étaient les plus représentées avec des fréquences respectives de 24,52% et 22,07%. Les principaux signes cliniques étaient des douleurs abdominales (92,28%), de la constipation dans 84,41%, ballonnement abdominal 28,39% et diverses manifestations extradigestives : insomnie dans 32,08%, de céphalées dans 30,55% des cas, de la fibromyalgie 22,91%. Les principaux facteurs déclenchants étaient : les facteurs psychologiques 32,08% et alimentaires (tubercules 14,13%, haricot 6,11%, le diner tardif et ou copieux 4,2% et les boissons gazeuses 3,44%). Le retentissement socioprofessionnel des TFI était dominé par l’absentéisme dans 82,78% des cas, le retard au travail dans 20%. Les comorbidités digestives les plus fréquentes étaient : le RGO, la dyspepsie, le dolichocôlon ainsi que leur association.
Conclusion
Le SII est un problème de santé publique qui altère la qualité de vie des personnes atteintes. Les douleurs abdominales, la constipation et le ballonnement abdominal en constituent la triade symptomatique. Le stress est un facteur déclenchant de la symptomatologie. L’association du SII avec des comorbidités digestives et extra-digestives est fréquente.
Introduction : Functional digestive disorders (TFI) or irritable bowel syndrome represent a real public health problem. Although this condition is not life-threatening, it significantly and chronically alters the quality of life of patients. The etiology is poorly understood and many factors are involved.
Methods : This was a descriptive cross-sectional study with prospective data collection carried out in outpatient consultation of the hepato-gastroenterology department of the Donka national hospital of the Conakry University Hospital from January 1, 2019 to December 31, 2020 in patients suffering from TFI and meeting the Rome IV criteria.
Results: Three hundred and ninety-eight cases of IBS out of 1309 patients, representing a prevalence of 30.40%. There was a female predominance with
a sex ratio of 0.92. The average age of our patients was 49 years with extremes of 10 and 88 years. The age groups of 25-34 and 35-44 were the most represented with respective frequencies of 24.52% and 22.07%. The main clinical signs were abdominal pain (92.28%), constipation in 84.41%, abdominal bloating in 28.39% and various extradigestive manifestations: insomnia in 32.08%, headache in 30.55% of cases. cases, fibromyalgia 22.91%. The main triggering factors were: psychological factors 32.08% and dietary factors (tubers 14.13%, beans 6.11%, late or heavy dinner 4.2% and soft drinks 3.44%). The socio-professional impact of TFIs was dominated by absenteeism in 82.78% of cases, lateness for work in 20%. The most common digestive comorbidities were: GERD, dyspepsia, dolichocolon and their combination.
Conclusion
IBS is a public health problem that impairs the quality of life of those affected. Abdominal pain, constipation and abdominal bloating constitute the symptomatic triad. Stress is a triggering factor for the symptoms. The association of IBS with digestive and extra-digestive comorbidities is common
Profil Evolutif et Comorbidités des Troubles Fonctionnels Intestinaux (TFI) Persistants au CHU de Conakry
Introduction : Les troubles fonctionnels digestifs (TFI) ou syndrome de l’intestin irritable représentent un véritable problème de santé publique. Si cette affection n’engage pas le pronostic vital, elle altère significativement et de façon chronique la qualité de vie des malades. L’étiologie est mal connue et de nombreux facteurs sont impliqués.
Méthodes : Il s’agissait d’une étude transversale descriptive à recueil prospectif de données réalisée en consultation externe du service d’hépato-gastroentérologie de l’hôpital national Donka du CHU de Conakry allant du 1er Janvier 2019 au 31 Décembre 2020 chez les patients souffrants de TFI et répondant aux critères de Rome IV.
Résultats : Trois cent quatre-vingt-dix-huit cas de SII sur 1309 patients soit une prévalence de 30,40%. On notait une prédominance féminine avec un sex ratio de 0,92. L’âge moyen de nos patients était de 49 ans avec des extrêmes de 10 et 88 ans. Les tranches d’âge de 25-34 ans et 35-44 ans étaient les plus représentées avec des fréquences respectives de 24,52% et 22,07%. Les principaux signes cliniques étaient des douleurs abdominales (92,28%), de la constipation dans 84,41%, ballonnement abdominal 28,39% et diverses manifestations extradigestives : insomnie dans 32,08%, de céphalées dans 30,55% des cas, de la fibromyalgie 22,91%. Les principaux facteurs déclenchants étaient : les facteurs psychologiques 32,08% et alimentaires (tubercules 14,13%, haricot 6,11%, le diner tardif et ou copieux 4,2% et les boissons gazeuses 3,44%). Le retentissement socioprofessionnel des TFI était dominé par l’absentéisme dans 82,78% des cas, le retard au travail dans 20%. Les comorbidités digestives les plus fréquentes étaient : le RGO, la dyspepsie, le dolichocôlon ainsi que leur association.
Conclusion
Le SII est un problème de santé publique qui altère la qualité de vie des personnes atteintes. Les douleurs abdominales, la constipation et le ballonnement abdominal en constituent la triade symptomatique. Le stress est un facteur déclenchant de la symptomatologie. L’association du SII avec des comorbidités digestives et extra-digestives est fréquente.
Introduction : Functional digestive disorders (TFI) or irritable bowel syndrome represent a real public health problem. Although this condition is not life-threatening, it significantly and chronically alters the quality of life of patients. The etiology is poorly understood and many factors are involved.
Methods : This was a descriptive cross-sectional study with prospective data collection carried out in outpatient consultation of the hepato-gastroenterology department of the Donka national hospital of the Conakry University Hospital from January 1, 2019 to December 31, 2020 in patients suffering from TFI and meeting the Rome IV criteria.
Results: Three hundred and ninety-eight cases of IBS out of 1309 patients, representing a prevalence of 30.40%. There was a female predominance with
a sex ratio of 0.92. The average age of our patients was 49 years with extremes of 10 and 88 years. The age groups of 25-34 and 35-44 were the most represented with respective frequencies of 24.52% and 22.07%. The main clinical signs were abdominal pain (92.28%), constipation in 84.41%, abdominal bloating in 28.39% and various extradigestive manifestations: insomnia in 32.08%, headache in 30.55% of cases. cases, fibromyalgia 22.91%. The main triggering factors were: psychological factors 32.08% and dietary factors (tubers 14.13%, beans 6.11%, late or heavy dinner 4.2% and soft drinks 3.44%). The socio-professional impact of TFIs was dominated by absenteeism in 82.78% of cases, lateness for work in 20%. The most common digestive comorbidities were: GERD, dyspepsia, dolichocolon and their combination.
Conclusion
IBS is a public health problem that impairs the quality of life of those affected. Abdominal pain, constipation and abdominal bloating constitute the symptomatic triad. Stress is a triggering factor for the symptoms. The association of IBS with digestive and extra-digestive comorbidities is common
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