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A convolutional neural network to detect possible hidden data in spatial domain images

Cybersecurity 2024年第1期7卷 37-52页

作者： jean.de la croix ntivuguruzwa Tohari Ahmad department of Informatics Institut Teknologi Sepuluh Nopember(ITS)Kampus ITS Keputih SukoliloSurabaya60111Indonesia African Center of Excellence in the Internet of Things College of Science and TechnologyUniversity of Rwanda3900KigaliRwanda

Hiding secret data in digital multimedia has been essential to protect the ***,attackers with a steganalysis technique may break *** steganalysis methods have good results with conventional Machine Learning(ML)techniques;however,the introduction of Convolutional Neural Network(CNN),a deep learning paradigm,achieved better performance over the previously proposed ML-based *** the existing CNN-based approaches yield good results,they present performance issues in classification accuracy and stability in the network training *** research proposes a new method with a CNN architecture to improve the hidden data detection accuracy and the training phase stability in spatial domain *** proposed method comprises three phases:pre-processing,feature extraction,and ***,in the pre-processing phase,we use spatial rich model filters to enhance the noise within images altered by data hiding;secondly,in the feature extraction phase,we use two-dimensional depthwise separable convolutions to improve the signal-to-noise and regular convolutions to model local features;and finally,in the classification,we use multi-scale average pooling for local features aggregation and representability enhancement regardless of the input size variation,followed by three fully connected layers to form the final feature maps that we transform into class probabilities using the softmax *** results identify an improvement in the accuracy of the considered recent scheme ranging between 4.6 and 10.2%with reduced training time up to 30.81%.

关键词： Information security Spatial domain steganalysis deep learning Convolutional neural network Infrastructure

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Symphyseal Disjunction after Dystocic Vaginal delivery: About Two Cases at the SourôSanou University Hospital of Bobo-Dioulasso (CHUSS)

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Open Journal of Obstetrics and Gynecology 2024年第1期14卷 1-6页

作者： Millogo jean.de la croix Sanou jean.de Dieu Gadigbé Akofa Méré Godé Sabi Tokobou William Ouédraogo André Togbé Eric Serge Alihonou Yaméogo Rélwendé Barnabé dembélé Adama Somé der Adolphe Ouattara Souleymane Obstetrics-Gynecology and Reproductive Medecine departement of Sourô Sanou Teaching Hospital Bobo-Dioulasso Burkina Faso Higher Institute of health Sciences (INSSA) Université nazi Boni Bobo-Dioulasso Burkina Faso

Diastasis of the symphysis pubis is a rare postpartum complication. We report two cases of symphysis diastasis after dystocic delivery, in two patients who presented in the postpartum period with functional impotence, pubalgia and acute urine retention. A frontal radiograph of the pelvis confirmed the diagnosis, showing a symphyseal separation of 12 mm and 18 mm. In our case, management was mainly medical, with a favorable clinical outcome.

关键词： Pelvis Symphyseal Disjunction/Diastasis Post-Partum Burkina Faso

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Placenta Previa at Souro Sanou Teaching Hospital, Burkina Faso (About 142 Cases)

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Open Journal of Obstetrics and Gynecology 2022年第11期12卷 1113-1120页

作者： Yaméogo Rélwendé Barnabé Millogo jean.de la croix Bassinga Kévin Wendpouyri Jonathan Kaboré Ahmed Somé der Adolphe Obstetrics-Gynecology and Reproductive Medecine department of Sourô Sanou Teaching Hospital Bobo Dioulasso Burkina Faso Public Health department of Joseph Ki-Zerbo University Ouagadougou Burkina Faso

Introduction: Placenta previa is an obstetric emergency that can be life-threatening for both mother and foetus. despite the progress made in diagnosis and treatment, it continues to be feared by obstetricians because of high maternal and perinatal mortality and increased morbidity. This study aims to investigate the diagnostic, therapeutic and prognostic aspects of placenta previa at the Sourô Sanou University Hospital in Bobo-Dioulasso. Method: This was a descriptive cross-sectional study with retrospective data collection from January 1, 2016 to december 31, 2018. Included were 142 pregnant women admitted to the maternity ward of the Sourô Sanou University Hospital (CHUSS) and diagnosed with placenta previa during pregnancy, labor, or in the postpartum period. Result: The frequency of placenta previa was 0.89%;the average age of patients was 28.51 years with extremes of 16 and 44 years. The multigestations represented 28.17% and the pauciparous 31.69%. Patients with a uterine scar represented 15.49%. Ultrasound diagnosis was made in 38 patients (26.76%). Placenta previa was recovered in 56.34% of cases. Patients with severe anaemia were 28.87%, and 57.04% of the anaemic cases received blood transfusion. Caesarean section was performed in 93.66% of patients. Four maternal deaths (2.81%) and 30 stillbirths (27.02%) were reported. Conclusion: Placenta previa remains a fairly frequent pathology with a non-negligible lethality rate and perinatal mortality in the maternity ward of the Sourô Sanou University Hospital.

关键词： Placenta Previa Prognosis Bobo-Dioulasso

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Does insect mother know under what conditions it will make their offspring live？

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Insect Science 2017年第1期24卷 141-149页

作者： Fatemeh Kohandani Guillaume jean Le Goff Thierry Hance Earth and Life Institute Biodiversity Research Centre Universite Catholique de Louvain 4 Place Croix du Sud 1348 Louvain-la-Neuve Belgium

According to the optimal oviposition theory, the larval success of insects depends on the oviposition site selection by females. Females are expected to choose a site with many resources and few competitors or predators to allow the best performance for their progeny, assuming that ＂mother knows best.＂ However, this is not systematically observed. The Aphidoletes aphidimyza larvae are generalist aphid predators and females consequently lay their eggs near or inside aphid colonies. The goal of this study was to investigate the impact ofintraspecific competition on oviposition behavior of A. aphidimyza females. First, we counted the number of eggs laid by a female on a leaf with 20 aphids, in the presence of 0, 2, 4, or 6 conspecific eggs or in the absence of eggs but in presence of 3 virgin females. The same experiment was also performed under choice condition with 2 oviposition sites. Our results show that the presence of low densities ofconspecific eggs, or the presence of conspecific females, have no significant impact on the number of eggs laid by A. aphidimyza females. One of the hypotheses advanced to explain these results is the advantages of conspecifics presence. At low densities, the presence of eggs on an oviposition site can indicate the suitability of the site for the females. The conspecific presence can also insure a dilution effect against predator and increase the presence of potential mating partners for this monogenic species.

关键词： Aphidoletes aphidimyza clutch size dilution effect intraspecific competition optimal oviposition predatory larvae

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Differences in oxidative stress dependence between gastric adenocarcinoma subtypes

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World Journal of Gastroenterology 2006年第7期12卷 1005-1012页

作者： Brigitte Bancel JacauesEstève jean-Christophe Souquet Shinya Toyokuni Hiroshi Ohshima Brigitte Pignatelli Hospital de la croix-Rousse Department of PathologyLyonFrance Centre Hospital de la croix-Rousse Department of GastroenterologyLyonFrance department of Pathology and Biology of Diseases Graduate School of MedicineKyoto UniversityKyotoJapan Brigitte Pignatelli International Agency for Research on Cancer.Endogenous Risk Factors GroupLyon.France Clinical Epidemiology Unit Department of Medical InformationHospices Civils de LyonFrance

AIM： To investigate the extent of oxidative stress in preneoplastic and neoplastic gastric mucosa in relation to their pathological criteria and histological subtypes. METHODS： A total of 104 gastric adenocarcinomas from 98 patients （88 infiltrative and 16 intraepithelial tumors） were assessed immunohistochemically for expression of iNOS and occurrence of nitrotyrosine （NTYR）-containing proteins and 8-hydroxy-2＇-deoxyguanosine （8-OH- dG）-containing DNA, as markers of NO production and damages to protein and DNA. RESULTS： Tumor cells staining for iNOS, NTYR and 8-OH-dG were detected in 41%, 62% and 50% of infiltrative carcinoma, respectively. The three markers were shown for the first time in intraepithelial carcinoma. The expression of iNOS was significantly more frequent in tubular carcinoma （TC） compared to diffuse carcinoma （DC）（54% vs 18%; P=0.008） or in polymorphous carcinoma （PolyC）（54% vs 21% ; P=0.04）. NTYR staining was obviously more often found in TC than that in PolyC （72% vs 30% ; P=0.03）. There was a tendency towards a higher rate of iNOS staining when distant metastasis （pM） was present. In infiltrative TC, the presence of oxidative stress markers was not significantly correlated with histological grade, density of inflammation, the depth of infiltration （pT）, lymph nodes dissemination （pN） and pathological stages （pTNM）.CONCLUSION： The iNOS-oxidative pathway may play an important role in TC, but moderately in PolyC and DC. DNA oxidation and protein nitration occur in the three subtypes. Based on the significant differences of NTYR levels, TC and PolyC appear as two distinct subtypes.

关键词： Gastric neoplasms Nitric oxide synthase Hpylori Nitrotyrosine 8-hydroxydeoxyguanosine Oxidative stress

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Highly defective graphene： A key prototype of two- dimensional Anderson insulators

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Nano Research 2013年第5期6卷 326-334页

作者： Aurelien Lherbier Stephan Roche Oscar A. Restrepo Yann-Michel Niquet Arnaud delcorte jean-Christophe Charlier Universite catholique de Louvain (UCL) Institute of Condensed Matter and Nanoscience (IMCN) NAPS-ETSF Chemin des ~toiles 8 1348 Louvain-la-Neuve Belgium CIN2 (ICN-CSIC) and Universitat Autonoma de Barcelona Catalan Institute of Nanotechnology Campus UAB 08193 Bellaterra (Barcelona) Spain ICREA Institucio Catalana de Recerca i Estudis Avancats 08070 Barcelona Spain Universite catholique de Louvain (UCL) Institute of Condensed Matter and Nanoscience (IMCN) BSMA Place Croix du Sud 1 (Boltzmann) 1348 Louvain-la-Neuve Belgium L_Sim SP2M UMR-E CEA/UJF-Grenoble 1 INAC 17 rue des Martyrs 38054 Grenoble Cedex 9 France

Electronic structure and transport properties of highly defective two-dimensional （2D） sp2 graphene are investigated theoretically. Classical molecular dynamics are used to generate large graphene planes containing a considerable amount of defects. Then, a tight-binding Hamiltonian validated by ab initio calculations is constructed in order to compute quantum transport within a real-space order-N Kubo-Greenwood approach. In contrast to pristine graphene, the highly defective sp2 carbon sheets exhibit a high density of states at the charge neutrality point raising challenging questions concerning the electronic transport of associated charge carriers. The analysis of the electronic wavepacket dynamics actually reveals extremely strong multiple scattering effects giving rise to mean free paths as low as 1 nm and localization phenomena. Consequently, highly defective graphene is envisioned as a remarkable prototype of 2D Anderson insulating materials.

关键词： graphene electronic transport Anderson insulators localization

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Screening for hypertension-mediated organ damage and aetiology:still of value after 65 years of age?

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Journal of Geriatric Cardiology 2022年第11期19卷 791-801页

作者： delphine Thiolliere Brahim Harbaoui Claire Falandry Marc Bonnefoy jean-Christophe Lega Pierre lantelme Pierre-Yves Courand Fédération de cardiologie Hôpital de la Croix-Rousse et Hôpital Lyon SudHospices Civils de LyonLyonFrance Universitéde Lyon CREATISCNRS UMR5220INSERM U1044INSA-LyonUniversitéClaude Bernard LyonFrance Service Universitaire de Gériatrie Hôpital Lyon SudHospices Civils de LyonLyonFrance CarMeN UniversitéClaude Bernard Lyon 1OullinsFrance Service de médecine interne et pathologies vasculaires Groupe d’Etude Multidisciplinaires des Maladies Thrombotiques(GEMMAT)Hôpital Lyon SudHospices Civils de LyonLyonFrance Universitéde Lyon Equipe Evaluation et Modélisation des Effets ThérapeutiquesLaboratoire de Biologie et Biométrie EvolutiveCNRS UMR 5558UniversitéClaude BernardLyonFrance

BACKGROUND Secondary forms and hypertension-mediated organ damage(HMOD) may differ between younger and older hypertensive *** aim of the present study was to explore the specificity of HMOD and secondary forms in patients≥ 65 years in comparison to younger ones in a contemporary *** We analysed 938 patients recruited between 2004 and 2014(Cardiology department,croix-Rousse Hospital,Lyon)who had at baseline HMOD and secondary forms screening among them 190 were≥ 65 *** The mean(2.1±0.8 vs.1.2±0.9,P 10 m/s was the most frequent HMOD in patients≥ 65 years(90.1%),while echocardiographic left ventricular hypertrophy was the most common in the younger patients(45.0%).Among ECG left ventricular indexes,only R wave in aVL lead was significantly more frequently observed in patients≥ 65 years(32.6%) than in younger ones(19.0%,P der patients(respectively;30.5% vs.27.8%,P=0.487).The most frequent aetiology was primary aldosteronism regardless of age,followed by renovascular hypertension(6.3% vs.3.3%,P=0.038).Among older patients,3.2% were treated with adrenalectomy and 6.3% with percutaneous transluminal renal *** Extensive screening of HMOD in older patients may be questionable as nearly all patients had one;aetiology must however be explored as a third of older patients had a secondary form.

关键词： Extensive screening of HMOD in older patients may be questionable as nearly all patients had one aetiology must however be explored as a third of older patients had a secondary form

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Plague risk in vulnerable community:assessment of Xenopsylla cheopis susceptibility to insecticides in Malagasy prisons

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Infectious Diseases of Poverty 2017年第1期6卷 1255-1261页

作者： Adelaide Miarinjara jean Vergain jean Marcel Kavaruganda Minoarisoa Rajerison Sebastien Boyer United’Entomologie Medicale Institut Pasteur de MadagascarAmbatofotsikely101 AntananarivoPO box 1274Madagascar Ecole Doctorale Sciences de la Vie et de l’Environnement Universited’AntananarivoAntananarivoMadagascar delegation Regionale pour l’Ocean Indien ComiteInternational de la Croix-Rouge(CICR)112Rue RainandriamampandryLot II B 16-Faravohitra101 AntananarivoMadagascar UnitePeste Institut Pasteur de MadagascarAmbatofotsikely101 AntananarivoPO box 1274Madagascar.

Background:Prisons in Madagascar are at high risk of plague *** of plague epidemic in prisons can cause significant episode of urban plague through the movement of potentially infected humans,rodents and *** and flea controls are essential in plague prevention,by reducing human contact with plague reservoirs and *** treatment is the key step available for the control of rat fleas which transmit the disease from infected rodents to *** implementation of an adapted flea control strategy should rely on the insecticide susceptibility status of the targeted *** the purpose of plague prevention campaign in prisons,we conducted insecticide resistance survey on Xenopsylla cheopis,the rat ***:Fleas were collected on rats caught in six prisons of *** were exposed to insecticide treated filter papers and mortality was recorded following World Health Organization ***:The fleas collected in the prisons had different resistance patterns,while a high level of resistance to insecticides tested was described in the Antanimora prison,located in the heart of Antananarivo,the capital of ***:This finding is alarming in the context of public health,knowing that the effectiveness of flea control could be jeopardized by insecticide *** order to establish more accurate rat fleas control in prisons,the main recommendations are based on continuous monitoring insecticide susceptibility of flea,insecticide rotation,and the development of a new method for flea control.

关键词： Plague Prison Flea Insecticide Madagascar

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Effectiveness of measures aiming to stabilize urban gullies in tropical cities:Results from field surveys across ***

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International Soil and Water Conservation Research 2023年第1期11卷 14-29页

作者： Eric Lutete landu Guy Ilombe Mawe Fils Makanzu Imwangana Charles Bielders Olivier dewitte jean Poesen Aurélia Hubert Matthias Vanmaercke department of Geography(U.R.SPHERES) University of LiegeClos Mercator 34000LiègeBelgium department of Geoscience University of KinshasaKinshasa Mont-AmbaCongo department of Natural resources management University of KinshasaKinshasa Mont-AmbaD.R Congo department of Geology Oficial University of de BukavuCongo Geomorphology and Remote Sensing laboratory Center for Geological and Mining ResearchCongo Earth and Life Institute-Environmental Sciences Universite catholique de LouvainCroix du sud 2L7.05.021348Louvain-la-NeuveBelgium Royal Museum for Central Africa Leuvensesteenweg 13B-3080TervurenBelgium department of Earth and Environmental Sciences KU LeuvenCelestijnenlan 200E3001HeverleeBelgium Institute of Earth and Environmental Sciences Maria-Curie Sklodowska University(UMCS)Krasnicka 2D20-718LublinPoland

Urban gullies are a rapidly growing concern in many tropical cities of the Global *** measures are already implemented for their ***,an overview of these measures and their overall effectivenesss is currently *** aim at addressing this gap by documenting existing ini-tiatives to stabilize urban gullies in *** and assessing their overall *** this end we conducted extensive field campaigns in Kinshasa,Kikwit and Bukavu and combined our terrain obser-vations with data on gully expansion rates(derived from series of satellite imagery).In total,we char-acterized present and past stabilization initiatives for 398 urban *** 69 of these gullies,the effect of a specific measure on gully expansion rates could be *** show that for the large ma-jority of gullies,various measures have been ***,these are mainly ad-hoc measures installed by the affected *** structural measures based on larger engineering works were observed for only 20-30%of *** huge efforts invested in the installation of measures strongly contrast with their overall low impact Among all strategies,only the deviation of runoff resulted in significantly lower expansion rates after *** numerous initiatives that rely on the sparse means available seem to have limited *** does not imply,however,that they are completely ineffective and should be *** on our findings,we formulate recommendations for further research on how to effectively prevent and stabilize urban gullies,taking into account the difficult environmental and socio-economic context.

关键词： Gully expansion rate Head and channel measures Catchment measures Global South Urban hazard

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Impact of previous cyst-enterostomy on patients' outcome following resection of bile duct cysts

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World Journal of Gastrointestinal Surgery 2016年第6期8卷 427-435页

作者： Mehdi Ouaissi Reza Kianmanesh Emilia Ragot Jacques Belghiti Pietro Majno Gennaro Nuzzo Remi Dubois Yann Revillon Daniel Cherqui Daniel Azoulay Christian Letoublon Frane is-Rene Pruvot Francois Paye Patrick Rat Karim Boudjema Adeline Roux jean-Yves Mabrut jean-François Gigot department of General and Digestive Surgery La Timone Hospital13009 MarseilleFrance department of Digestive and Endocrine Surgery Robert DebréHospital51090 ReimsFrance department of HPB Surgery Beaujon Hospital92110 ClichyFrance department of Digestive Surgery Geneva University Hospital1205 GenevaSwitzerland department of HPB Surgery Gemelli University Hospital00168 RomaItaly department of Pediatric Surgery Mother and Children Hospital69677 BronFrance department of Pediatric Digestive Surgery Necker Hospital75175 ParisFrance department of Digestive and HPB Surgery Paul Brousse Hospital94800 VillejuifFrance department of Digestive and HPB Surgery Henri Mondor Hospital94000 CreteilFrance department of Digestive Surgery Michallon Hospital38043 GrenobleFrance department of Digestive surgery and Transplantation Claude Huriez Hospital59037 LilleFrance department of Digestive Surgery Saint Antoine Hospital75012 ParisFrance department of Digestive Surgery Dijon University Hospital21000 DijonFrance department of HPB Surgery Pontchaillou Hospital35033 RennesFrance Pôle Information Médicale Evaluation Recherche Unitéde Recherche Clinique69317 LyonFrance department of Digestive Surgery and Hepatic Transplantation La Croix-Rousse Hospital69317 LyonFrance department of Abdominal Surgery and Transplantation Division of Hepato-Biliary and Pancreatic Surgery Cliniques Universitaires Saint-Luc 1200 BrusselsBelgium

AIM:To analyze the impact of previous cyst-enterostomy of patients underwent congenital bile duct cysts(BDC)***:A multicenter European retrospective study between 1974 and 2011 were conducted by the French Surgical *** Todani subtypes I and IVb were *** imaging studies and operative and pathology reports underwent central *** with and without a previous history of cystenterostomy(CE)were ***:Among 243 patients with Todani types I and IVb BDC,16 had undergone previous CE(6.5%).Patients with a prior history of CE experienced a greater incidence of preoperative cholangitis(75%vs 22.9%,Plarge series to show that previous CE is associated with poorer short-and longterm results after Todani types I and IVb BDC resection.

关键词： Bile duct cyst Congenital Biliary disease Cyst-enterostomy Long-term outcome

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