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Search Results: 1 - 10 of 1267 matches for " Maurice Tchuente "
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Réseaux d'Automates de Caianiello Revisité
René Ndoundam,Maurice Tchuente
Computer Science , 2006,
Abstract: We exhibit a family of neural networks of McCulloch and Pitts of size $2nk+2$ which can be simulated by a neural networks of Caianiello of size $2n+2$ and memory length $k$. This simulation allows us to find again one of the result of the following article: [Cycles exponentiels des r\'{e}seaux de Caianiello et compteurs en arithm\'{e}tique redondante, Technique et Science Informatiques Vol. 19, pages 985-1008] on the existence of neural networks of Caianiello of size $2n+2$ and memory length $k$ which describes a cycle of length $k \times 2^{nk}$.
Parallel Chip Firing Game associated with n-cube orientations
René Ndoundam,Maurice Tchuente,Claude Tadonki
Computer Science , 2010,
Abstract: We study the cycles generated by the chip firing game associated with n-cube orientations. We show the existence of the cycles generated by parallel evolutions of even lengths from 2 to $2^n$ on $H_n$ (n >= 1), and of odd lengths different from 3 and ranging from 1 to $2^{n-1}-1$ on $H_n$ (n >= 4).
Low Birth Weight in Perinatally HIV-Exposed Uninfected Infants: Observations in Urban Settings in Cameroon
Casimir Ledoux Sofeu, Josiane Warszawski, Francis Ateba Ndongo, Ida Calixte Penda, Suzie Tetang Ndiang, Georgette Guemkam, Nicaise Makwet, Félicité Owona, Anfumbom Kfutwah, Patrice Tchendjou, Ga?tan Texier, Maurice Tchuente, Albert Faye, Mathurin Cyrille Tejiokem, The ANRS-PEDIACAM study group
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0093554
Abstract: Background The consequences of maternal HIV infection for fetal growth are controversial. Here, we estimated the frequency of small for gestational age and gender (SGAG) among neonates born to HIV-infected or uninfected mothers and assessed the contribution, if any, of maternal HIV to the risk of SGAG. Methods The data used were obtained from the ANRS-Pediacam cohort in Cameroon. Pairs of newborns, one to a HIV-infected mother and the other to an uninfected mother, were identified during the first week of life, and matched on gender and recruitment site from 2007–2010. SGAG was defined in line with international recommendations as a birth weight Z-score adjusted for gestational age at delivery and gender more than two standard deviations below the mean (?2SD). Considering the matched design, logistic regression modeling was adjusted on site and gender to explore the effect of perinatal HIV exposure on SGAG. Results Among the 4104 mother-infant pairs originally enrolled, no data on birth weight and/or gestational age were available for 108; also, 259 were twins and were excluded. Of the remaining 3737 mother-infant pairs, the frequency of SGAG was 5.3% (95%CI: 4.6–6.0), and was significantly higher among HIV-infected infants (22.4% vs. 6.3%; p<.001) and lower among HIV-unexposed uninfected infants (3.5% vs. 6.3%; p<.001) than among HIV-exposed uninfected infants. Similarly, SGAG was significantly more frequent among HIV-infected infants (aOR: 4.1; 2.0–8.1) and less frequent among HIV-unexposed uninfected infants (aOR: 0.5; 0.4–0.8) than among HIV-exposed uninfected infants. Primiparity (aOR: 1.9; 1.3–2.7) and the presence of any disease during pregnancy (aOR: 1.4; 1.0–2.0) were identified as other contributors to SGAG. Conclusion Maternal HIV infection was independently associated with SGAG for HIV-exposed uninfected infants. This provides further evidence of the need for adapted monitoring of pregnancy in HIV-infected women, especially if they are symptomatic, to minimize additional risk factors for SGAG.
Examining the Mechanism for the Transferability of Leadership Elements to Students: The Case of the Catholic University Institute of Buea (CUIB)  [PDF]
Maurice Ayuketang Nso
Open Journal of Leadership (OJL) , 2018, DOI: 10.4236/ojl.2018.72009
Abstract: This paper recommends what could be a standard definition for the word “leadership”, as it found out that there has been no standard way for defining leadership, and that others have defined leadership based on the leadership elements a leader has but failed to rethink that one could be a bad leader and as such the leadership elements could not be transferred (passed on) to heirs for the simple reason that no one likes bad things.
Pap Smear Screening, the Way Forward for Prevention of Cervical Cancer? A Community Based Study in the Buea Health District, Cameroon  [PDF]
Gregory Edie Halle Ekane, Thomas Egbe Obinchemti, Charlotte Tchuente Nguefack, Desmond Molar Nkambfu, Robert Tchounzou, Dickson Nsagha, Georges Mangala Nkwele, George Enow Orock
Open Journal of Obstetrics and Gynecology (OJOG) , 2015, DOI: 10.4236/ojog.2015.54033

Introduction: Cancer of the cervix is the second most common gynecologic malignancy in the world due to lack of awareness and poor uptake of cervical cancer screening services especially in low income countries. In Cameroon, though there is a national cervical cancer-screening program the service has been limited to some main cities without an appreciable impact. Aims: The objectives of this study were to determine the knowledge, attitude, practice towards Pap smear screening, thus evaluating its suitability as a screening procedure in Cameroon, through this pilot study in the Buea Health District. Methods: The study was a community-based cross-sectional descriptive survey that involved 309 women. Women from 18 years were enrolled for the study from 9thOctober to 20thNovember 2013. Results: The mean age of the participants was 32.3 years (SD = 11.7 years). Most of the women (29.5%) who had gone for the Pap test were in the 41 - 50 years age group. Only 3.6% of the study participants had “good” knowledge of cervical cancer and Pap smear screening. Approximately 20% of the women had a previous Pap smear test with 55.7% of them having the test just once. Eighty two percent of those who had secondary and tertiary levels of education had never had a Pap smear test. Awareness of risk factors for cervical cancer was low. Fear of pain, positive results after screening, non-curability of cervical cancer were some factors associated with a low Pap test uptake (p < 0.05). Conclusion: There is poor knowledge and perceived barriers by women about Pap smear screening and follow-up services. For an impact to be made in the prevention of cervical cancer, Pap smear screening is not the preferred method because of these limitations in this community.

Time in dynamical systems
Maurice Courbage
Discrete Dynamics in Nature and Society , 2004, DOI: 10.1155/s102602260440301x
Abstract: We review some ideas and concepts on the irreversibility of deterministic dynamical systems that have been discussed during several years of collaboration with Ilya Prigogine and B. Misra.
General and microbiological aspects of solid substrate fermentation
Electronic Journal of Biotechnology , 1998,
Abstract: at first some general considerations about specificity and characteristics of ssf, their advantages and disadvantages as compared to lsf, are presented. microorganisms involved in solid substrate fermentations are identified, considering the better performances of filamentous fungi. the solid substrates and their basic macromolecular compounds are detailed in relation to this complex and heterogeneous system. biomass measurement is examined in detail, as well as environmental factors, both essential for studying and optimising solid substrate fermentations.
Reflections on production planning and control (PPC)
Bonney, Maurice;
Gest?o & Produ??o , 2000, DOI: 10.1590/S0104-530X2000000300002
Abstract: the paper examines the current state of production planning and control (ppc), identifies some technical and systems changes that have occurred over recent years and links these with the requirements being placed on companies by the market. ppc is being asked to respond effectively to these internal and external changes by being more dynamic and providing better control of resources and delivery performance. some of the requirements to be satisfied by the new ppc systems are identified. to meet these requirements it is suggested that better understanding is required of how different factors affect ppc systems performance and that administrative systems need improving. the quantitative, administrative and behavioural aspects of ppc are discussed. a framework for developing an agenda for action and research is provided.
The coming of age of cosmophysics
Jacob, Maurice;
Anais da Academia Brasileira de Ciências , 2003, DOI: 10.1590/S0001-37652003000200002
Abstract: ''cosmophysics'' as reviewed is a multidisciplinary domain which brings together astroparticle physics, fundamental physics in space and topics related to the structure and evolution of the universe. it represents a growing interface between high-energy particle physics and astro-physics. this paper presents a general overview of the subject, focusing on cosmology, cosmic rays, dark matter searches and the soon-expected observation of gravitational waves.
Perceptual atoms: proximal motion vector-structures and the perception of object motion in depth
Hershenson, Maurice;
Arquivos Brasileiros de Oftalmologia , 2003, DOI: 10.1590/S0004-27492003000600005
Abstract: a framework is proposed for analyzing the perception of motion in depth produced by simple proximal motion patterns of two to four points. the framework includes input structure, perceptual system constraints, and a depth scaling mechanism. the input is relational stimulation described by two proximal dimensions, orientation and separation, that can change or remain constant over the course of a motion pattern. combinations of change or no-change in these dimensions yield four basic patterns of proximal stimulation: parallel, circular, perspective, and parallax. these primary patterns initiate automatic processing mechanisms - a unity constraint that treats pairs of points as connected and a rigidity constraint that treats the connection as rigid. when the constraints are activated by perspective or parallax patterns, the rigid connection between the points also appears to move in depth. a scaling mechanism governs the degree to which the objects move in depth in order to maintain the perceived rigidity. although this framework is sufficient to explain perceptions produced by three- and four-point motion patterns in most cases, some patterns require additional configurational factors to supplement the framework. nevertheless, perceptual qualities such as shrinking, stretching, bending, and folding emerge from the application of the same processing constraints and depth scaling factors as those that produce the perception of rigid objects moving in depth.
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