Search results for "DMA"

L'attribution des classes aux enseignants : le cas des écoles primaires

2007

Assigning teachers to classrooms: The case of French primary schools - This paper reports a study which focused on teachers'assignment in French elementary school whose headmasters have no decision-making powers. Using both in-depth interviews with 18 headmasters and data about teachers and classrooms within their schools, the analysis shows that the potential for problems is significant as far as teachers are sorted into classrooms based on their preference first. When those individual preferences compete, a few basic rules apply and some arrangements should be found amongst members of the staff. Actually, this study reveals that bargaining, or at times yielding to teachers'preferences abo…

Knowledge portal for Six Sigma DMAIC process

2016

Knowledge plays a crucial role in success of DMAIC (Define, Measure, Analysis, Improve, and Control) execution. It is therefore necessary to share and renew the knowledge. Yet, one problem arising is how to create a place where knowledge are collected and shared effectively. We believe that Knowledge Portal (KP) is an important solution for the problem. In this article, the works concerning with requirements and functionalities for KP are first reviewed. Afterwards, a procedure with necessary tools to develop and implement a KP for DMAIC (KPD) is proposed. Particularly, KPD is built on the basis of free and open-source content and learning management systems, and Ontology Engineering. In or…

2014

Abstract The enantiomeric and diastereomeric profiling of chiral pharmaceuticals (ephedrine, norephedrine, atenolol and venlafaxine) and illicit drugs (amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine (MDA), 3,4-methylenedioxy- N -methylamphetamine (MDMA) and 3,4-methylenedioxy- N -ethylamphetamine (MDEA)) was undertaken over a period of fourteen consecutive days in three wastewater treatment plants (WWTPs) in the city of Valencia, Spain. Degradation efficiency of WWTPs was found to be compound and enantiomer dependent. Selective enantiomer enrichment was observed for several target analytes. Amphetamine and MDMA were enriched with R (−)-enantiomers. 1 S ,2 S (+)-pseudoephedrine …

Water reuse from wastewater treatment: The transition towards circular economy in the water sector

2022

Water is crucial for economic development since it interacts with the agricultural, production, and energy sec-tors. However, the increasing demand and climate change put pressure on water sources. This paper argued the necessity of using reclaimed water for irrigation within the scope of a circular economy. The barriers (i.e., technological and economic, institutional/regulatory, and social) to water reuse practices were revealed. Lessons on how to overcome the barriers were learned from good practices. The roadmaps adopted in the European Union for the transition towards the circular economy were reviewed. It has been observed that these roadmaps are generally on the circularity of solid …

Statistical atlas based exudate segmentation

2013

Diabetic macular edema (DME) is characterized by hard exudates. In this article, we propose a novel statistical atlas based method for segmentation of such exudates. Any test fundus image is first warped on the atlas co-ordinate and then a distance map is obtained with the mean atlas image. This leaves behind the candidate lesions. Post-processing schemes are introduced for final segmentation of the exudate. Experiments with the publicly available HEI-MED data-set shows good performance of the method. A lesion localization fraction of 82.5% at 35% of non-lesion localization fraction on the FROC curve is obtained. The method is also compared to few most recent reference methods.

Pattern Recognition Scheme for Large-Scale Cloud Detection over Landmarks

2020

Landmark recognition and matching is a critical step in many Image Navigation and Registration (INR) models for geostationary satellite services, as well as to maintain the geometric quality assessment (GQA) in the instrument data processing chain of Earth observation satellites. Matching the landmark accurately is of paramount relevance, and the process can be strongly impacted by the cloud contamination of a given landmark. This paper introduces a complete pattern recognition methodology able to detect the presence of clouds over landmarks using Meteosat Second Generation (MSG) data. The methodology is based on the ensemble combination of dedicated support vector machines (SVMs) dependent…

Probabilistic entailment in the setting of coherence: The role of quasi conjunction and inclusion relation

2013

In this paper, by adopting a coherence-based probabilistic approach to default reasoning, we focus the study on the logical operation of quasi conjunction and the Goodman-Nguyen inclusion relation for conditional events. We recall that quasi conjunction is a basic notion for defining consistency of conditional knowledge bases. By deepening some results given in a previous paper we show that, given any finite family of conditional events F and any nonempty subset S of F, the family F p-entails the quasi conjunction C(S); then, given any conditional event E|H, we analyze the equivalence between p-entailment of E|H from F and p-entailment of E|H from C(S), where S is some nonempty subset of F.…

Quasi conjunction, quasi disjunction, t-norms and t-conorms: Probabilistic aspects

2013

We make a probabilistic analysis related to some inference rules which play an important role in nonmonotonic reasoning. In a coherence-based setting, we study the extensions of a probability assessment defined on $n$ conditional events to their quasi conjunction, and by exploiting duality, to their quasi disjunction. The lower and upper bounds coincide with some well known t-norms and t-conorms: minimum, product, Lukasiewicz, and Hamacher t-norms and their dual t-conorms. On this basis we obtain Quasi And and Quasi Or rules. These are rules for which any finite family of conditional events p-entails the associated quasi conjunction and quasi disjunction. We examine some cases of logical de…

Automatic landmark detection and 3D Face data extraction

2017

Abstract This paper contributes to 3D facial synthesis by presenting a novel method for parameterization using Landmark Point detection. The approach presented aims at improving facial recognition even in varying facial expressions, and missing data in 3D facial models. As such, the prime objective was to develop an automatically embedded process that can detect any frontal face in 3D face recognition systems, with face segmentation and surface curvature information. Using the hybrid interpolation method, experiments on facial landmarks were performed on 4950 images from Face Recognition Grand Challenge database (FRGC). Distinctive facial landmarks from the nose–tips, Limits mouth and two e…

Ar elektroforētiskās izgulsnēšanas metodi iegūts pārejas metālu un reducēta grafēna oksīda anodmateriāls litija jonu baterijām

2022

Litija jonu baterijas (LJB) ir viena no svarīgākajiem enerģijas uzglabāšanas ierīcēm, kuras priekšrocības ir augsts enerģijas blīvums, augsts uzlādes/izlādes ciklu skaits un laba īpatnējā jauda. Tomēr pastāvīgi nepieciešams uzlabot LJB elektrodu enerģijas blīvumu. Šajā darbā tiek pētīts elektroforētiski izgulsnēts Fe2O3/TiO2/rGO kompozīts ka anods LJB. Fe2O3 ir liela lādiņietilpība (1007 mAh/g), TiO2 dod struktūras stabilitāti un rGO piemīt augsta lādiņietilpība un liela elektrovadītspēja. Darbā tiek pētītas Fe2O3/TiO2/rGO kompozīta struktūra un elektroķīmiskas īpašības kā funkcija no elektroforēzē izmantotās suspensijas sastāva. Noteikts optimālais suspensijas masas attiecības sastāvs Fe2O…