Simulasi Numerik Aliran Fluida Pada Permukaan Peregangan Dengan Kondisi Batas Konveksi Di Titik-Stagnasi

Simulasi numerik aliran fluida pada permukaan peregangan dengan kondisi batas konveksi di titik-stagnasi dibahas dalam Tugas Akhir ini. Persamaan pembangun yang diperoleh dalam bentuk persamaan dimensional, ditransformasikan menjadi persamaan similaritas menggunakan variabel similaritas dan stream function. Persamaan similaritas yang berbentuk persamaan diferensial biasa (PDB) kemudian diselesaikan secara numerik menggunakan metode Runge-Kutta-Fehlberg. Berdasarkan simulasi numerik diperoleh bahwa pengaruh dari bilangan Prandtl dan parameter peregangan yang meningkat mengakibatkan menurunnya profil temperatur. Sebaliknya, semakin meningkatnya parameter konveksi mengakibatkan peningkatan juga pada profil temperatur

Cognitive processing of spatial relations in Euclidean diagrams

The cognitive processing of spatial relations in Euclidean diagrams is central to the diagram-based geometric practice of Euclid's Elements. In this study, we investigate this processing through two dichotomies among spatial relations—metric vs topological and exact vs co-exact—introduced by Manders in his seminal epistemological analysis of Euclid's geometric practice. To this end, we carried out a two-part experiment where participants were asked to judge spatial relations in Euclidean diagrams in a visual half field task design. In the first part, we tested whether the processing of metric vs topological relations yielded the same hemispheric specialization as the processing of coordinate vs categorical relations. In the second part, we investigated the specific performance patterns for the processing of five pairs of exact/co-exact relations, where stimuli for the co-exact relations were divided into three categories depending on their distance from the exact case. Regarding the processing of metric vs topological relations, hemispheric differences were found for only a few of the stimuli used, which may indicate that other processing mechanisms might be at play. Regarding the processing of exact vs co-exact relations, results show that the level of agreement among participants in judging co-exact relations decreases with the distance from the exact case, and this for the five pairs of exact/co-exact relations tested. The philosophical implications of these empirical findings for the epistemological analysis of Euclid's diagram-based geometric practice are spelled out and discussed

Education et Cohésion Sociale en Tunisie

La présente étude se propose d’illustrer la problématique relative à la pertinence et l’efficacité des actions éducatives visant à renforcer la cohésion sociale dans le contexte national tunisien. Ainsi, seront traités, tours à tours la capacité du système éducatif (programmes, textes, curricula et autres dispositifs) d’assurer l’intégration sociale des jeunes apprenants et de renforcer les valeurs de la citoyenneté - avec ce que cette notion comporte comme référence à l’identité et l’altérité- en vue de permettre à ces jeunes d’accéder aux modes de penser et d’agir valorisés dans la pensée contemporaine.Mots clés: Education, Cohésion sociale, Citoyenneté, Identité, Altérité

A Self-Reference False Memory Effect in the DRM Paradigm: Evidence from Eastern and Western Samples

It is well established that processing information in relation to oneself (i.e., selfreferencing) leads to better memory for that information than processing that same information in relation to others (i.e., other-referencing). However, it is unknown whether self-referencing also leads to more false memories than other-referencing. In the current two experiments with European and East Asian samples, we presented participants the Deese-Roediger/McDermott (DRM) lists together with their own name or other people’s name (i.e., “Trump” in Experiment 1 and “Li Ming” in Experiment 2). We found consistent results across the two experiments; that is, in the self-reference condition, participants had higher true and false memory rates compared to those in the other-reference condition. Moreover, we found that selfreferencing did not exhibit superior mnemonic advantage in terms of net accuracy compared to other-referencing and neutral conditions. These findings are discussed in terms of theoretical frameworks such as spreading activation theories and the fuzzytrace theory. We propose that our results reflect the adaptive nature of memory in the sense that cognitive processes that increase mnemonic efficiency may also increase susceptibility to associative false memories

Experimental assessment of the variability of concrete air permeability: repeatability, reproducibility and spatial variability

International audienc

Impact of new Dams built on Upstream of Lesser Zab River on Dokan Dam Using HEC-ResSim Model

Recent years have witnessed significant declines in surface water quantities as a result of population density, climate change, and water pollution. Iraq is one of the countries that has suffered from water scarcity, particularly due to the upstream countries' water usage policies on the Tigris and Euphrates rivers. All indicators suggest that the water situation will transition from abundance to scarcity in the near future. Therefore, and given that most studies have focused on the operational policies of dams and hydraulic structures, there has been a growing need to study and analyse the impact of upstream dam construction on the operation of Iraqi dams, such as Dokan Dam located on the Lesser Zab River. Dokan Dam is one of the most important dams to study due to its size and direct impact on surrounding areas. The aim is to understand the changes in the performance of these structures and the impact of declining water levels. To achieve this objective, and after collecting sufficient data, the HEC-ResSim program was used to study the impact on the dam's operation over a 30-year period from 1980 to 2010. The results showed that HEC-ResSim was effective in simulating the system's operation and studying daily and monthly discharges, as well as its flexibilit

Relationship of Genotype, Phenotype, and Treatment in Dopa-Responsive Dystonia: MDSGene Review

Background Pathogenic variants in 5 genes (GCH1, TH, PTS, SPR, and QDPR), involved in dopamine/tetrahydrobiopterin biosynthesis or recycling, have been linked to Dopa-responsive dystonia (DRD). Diagnosis and treatment are often delayed due to high between- and within-group variability. Objectives Comprehensively analyzed individual genotype, phenotype, treatment response, and biochemistry information. Methods 734 DRD patients and 151 asymptomatic GCH1 mutation carriers were included using an MDSGene systematic literature review and an automated classification approach to distinguish between different forms of monogenic DRDs. Results Whereas dystonia, L-Dopa responsiveness, early age at onset, and diurnal fluctuations were identified as red flags, parkinsonism without dystonia was rarely reported (11%) and combined with dystonia in only 18% of patients. While sex was equally distributed in autosomal recessive DRD, there was female predominance in autosomal dominant DYT/PARK-GCH1 patients accompanied by a lower median age at onset and more dystonia in females compared to males. Accordingly, the majority of asymptomatic heterozygous GCH1 mutation carriers (>8 years of age) were males. Multiple other subgroup-specific characteristics were identified, showing high accuracy in the automated classification approach: Seizures and microcephaly were mostly seen in DYT/PARK-PTS, autonomic symptoms appeared commonly in DYT/PARK-TH and DYT/PARK-PTS, and sleep disorders and oculogyric crises in DYT/PARK-SPR. Biochemically, homovanillic acid and 5-hydroxyindoleacetic acid in CSF were reduced in most DRDs, but neopterin and biopterin were increased only in DYT/PARK-PTS and DYT/PARK-SPR. Hyperphenylalaninemia was seen in DYT/PARK-PTS, DYT/PARK-QDPR, and rarely reported in autosomal recessive DYT/PARK-GCH1. Conclusions Our indicators will help to specify diagnosis and accelerate start of treatment. © 2021 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Societ

Usefulness and pitfalls of MAA SPECT/CT in identifying digestive extrahepatic uptake when planning liver radioembolization

International audiencePURPOSE: Identifying gastroduodenal uptake of (99m)Tc-macroaggregated albumin (MAA), which is associated with an increased risk of ulcer disease, is a crucial part of the therapeutic management of patients undergoing radioembolization for liver tumours. Given this context, the use of MAA single photon emission computed tomography (SPECT)/CT may be essential, but the procedure has still not been thoroughly evaluated. The aim of this retrospective study was to determine the effectiveness of MAA SPECT/CT in identifying digestive extrahepatic uptake, while determining potential diagnostic pitfalls. METHODS: Overall, 139 MAA SPECT/CT scans were performed on 103 patients with different hepatic tumour types. Patients were followed up for at least 6 months according to standard requirements. RESULTS: Digestive, or digestive-like, uptake other than free pertechnetate was identified in 5.7% of cases using planar imaging and in 36.6% of cases using SPECT/CT. Uptake sites identified by SPECT/CT included the gastroduodenal region (3.6%), gall bladder (12.2%), portal vein thrombosis (6.5%), hepatic artery (6.5%), coil embolization site (2.1%) as well as falciform artery (5.0%). For 2.1% of explorations, a coregistration error between SPECT and CT imaging could have led to a false diagnosis by erroneously attributing an uptake site to the stomach or gall bladder, when the uptake actually occurred in the liver. CONCLUSION: SPECT/CT is more efficacious than planar imaging in identifying digestive extrahepatic uptake sites, with extrahepatic uptake observed in one third of scans using the former procedure. However, more than half of the uptake sites in our study were vascular in nature, without therapeutic implications. The risk of coregistration errors must also be kept in mind