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Search Results: 1 - 10 of 9779 matches for " Ahmed Yacouba Coulibaly "
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Critique of John Locke Objection to the Innate Ideas  [PDF]
Coulibaly Yacouba
Open Journal of Philosophy (OJPP) , 2016, DOI: 10.4236/ojpp.2016.64030
Abstract: The debate about innetivism is not a new subject in philosophy. From the earlier philosophers up to the recent ones, the main question that remains is: men are born with some ideas or we only know through experience? In this study, the emphasis will not be the process of human knowledge but the controversy in the objection of Locke to the innate Idea. From the beginning of his objection, John Locke shows that we are born with empty mind. Then through experience we build the knowledge little by little. But later on, Locke recognizes that it’s also possible that children may have some ideas from the womb. They may experience wants, diseases, hunger, and heat. To him many of those ideas which were produced in the minds of children, in the beginning of their sensation, if they are not repeated in future, then they are quite lost. If we choose the fact that people are born with ideas from pre-experience, that view is more scientific and more logical than the religious view of Plato. The paper concludes that even though there is no complete agreement on how innate ideas are made, we did not come in the world with blank mind and what is important is not how innate ideas have been made but their existence and application in life.
From the Failure of African Socialism, How to Set a New Trend for a New Generation?  [PDF]
Coulibaly Yacouba, Belko Wologueme
Open Journal of Social Sciences (JSS) , 2018, DOI: 10.4236/jss.2018.62003
Abstract:
From 1960, most of the African nations got their political independence. Many countries started to establish national and regional vision about the future. Then some political scientist, state men and scholars came out with a new philosophy called socialism. The concept of socialism was at the same time philosophical and ideological conviction made to promote national and regional unity in Africa. Unfortunately, the concept was misunderstood by most of the leaders to some extent, but also, the lack of good will led some others to mislead their own people by fighting against the idea of socialism. The fact that many Africans were not educated, contributed to the growth and expansion of socialism with effectiveness. For all these reasons, the application of socialism was difficult, even impossible. In this article, we are trying to explain the main reason of the failure of this political and philosophical thought and set a new trend for the new generation.
Enzyme Inhibition Effect and Polyphenolic Content of Medicinal Plant Extracts from Burkina Faso
Mindiediba Jean Bangou,Martin Kiendrebeogo,Moussa Compaore,Ahmed Yacouba Coulibaly
Journal of Biological Sciences , 2011,
Abstract: In the present study, 36 plant extracts, belonging to 6 families from Burkina Faso were used to evaluate their glutathione-S-transferase (GST), acetylcholinesterase (AChE), carboxylesterase (CES) and xanthine oxidase (XO) inhibitory activities and their phenolic, tannin and flavonoids contents by using spectrophotometrical methods. At 100 μg mL-1, Lippia chevalieri, Eclipta prostrata, Lantana camara and Indigofera pulchra extracts showed the best percentage of inhibition by regulating GST, AChE, CES and XO activities, respectively. The phytochemical investigations showed that all plant extracts were rich in biological compounds, namely phenolic, tannin and flavonoids. Particularly Cassia mimosoides extract presented the best phenolic, tannin and flavonoid contents. This result indicated that phenolic from Ceasalpiniaceae, flavonoids from Combretaceae and tannin from Verbenaceae contribute significantly to the inactivation of CES, AchE and GST, respectively. However, no significant correlation was found between polyphenolic compounds content and XO inhibitory activity. Present findings could partially justify the traditional uses of these plants in the treatment of mental disorders, gout, painful inflammations and cardiovascular diseases.
Common Behavior in the Practice of Democracy in Africa  [PDF]
Coulibaly Yacouba, Traore Sanibe Emmanuel
Open Journal of Political Science (OJPS) , 2017, DOI: 10.4236/ojps.2017.71002
Abstract: Africa is a vast continent with such a diverse and complex culture, which requires us to be careful in our language as we discuss and debate about the continent. Thus, the question of democracy in Africa is nowadays a debate that divides very schematically the political scientists. For instance, it is when it comes to the identification of the beginning of democratization in the continent, the description of the level of advancement in the democratic practice or even the nature of democracy that the differences arise. Although one thing remains undisputable: the practice of democracy in Africa suffers from many problems such as, misunderstanding, violence, problem of adaptation, multiple numbers of political party. Africa is a vast continent with such a diverse and complex culture, which requires us to be careful in our language as we discuss and debate about the continent. Thus, the question of democracy in Africa is nowadays a debate that divides very schematically the political scientists. For instance, it is when it comes to the identification of the beginning of democratization in the continent, the description of the level of advancement in the democratic practice or even the nature of democracy that the differences arise. However, one thing remains undisputable: the practice of democracy in Africa suffers from many problems such as, misunderstanding, violence, problem of adaptation, multiple numbers of political party.
Experimental Characterization of a MIMO Underground Mine Channel at 2.45 GHz
Yacouba Coulibaly;Bilel Mnasri;Mourad Nedil;Ismail Ben Mabrouk;Larbi Talbi;Tayeb Ahmed Denidni
PIER B , 2013, DOI: 10.2528/PIERB12110907
Abstract: In this paper, an experimental characterization of a MIMO underground channel is presented. A simple statistical model is proposed at 2.45 GHz. The Channel is characterized in terms of path loss, shadowing, RMS delay spread, and capacity. The measurements are carried out in an underground mine, which is a harsh confined environment. The path loss model is extracted from measured data for the line of sight (LOS) and non line of sight (NLOS) scenarios for both MIMO and SISO channels. The path loss exponent in LOS is less than 2 in MIMO and SISO as the environment has a dense concentration of scatterers. A statistical study is carried out to find the delay spread. For MIMO and SISO, there is no relation between the delay spread and the transmitter receiver distance. Furthermore, the delay spread of the MIMO is less than the one of the SISO channel in the LOS measurement campaigns. Aikake information Criteria are used as a goodness of fit for different statistical distributions to represent the delay spread. According to the calculated capacity for a constant signal to noise ratio in LOS case, the transmission performance is significantly improved by using the MIMO scheme over the traditional SISO. Therefore, MIMO is an ideal candidate for future wireless underground communications.
Evaluation of Enzymes Inhibition Activities of Medicinal Plant from Burkina Faso
Mindiediba Jean Bangou,Martin Kiendrebeogo,Nag-Tiero Roland Meda,Ahmed Yacouba Coulibaly
Pakistan Journal of Biological Sciences , 2011,
Abstract: The aim of the present study was to evaluate some enzymes inhibitory effects of 11 plant species belonging to 9 families from Burkina Faso. Methanolic extracts were used for their Glutathione-s-transferase (GST), Acetylcholinesterase (AChE), Carboxylesterase (CES) and Xanthine Oxidase (XO) inhibitory activities at final concentration of 100 μg mL-1. The total phenolics, flavonoids and tannins were also determined spectrophotometrically using Folin-Ciocalteu, AlCl3 and ammonium citrate iron reagents, respectively. Among the 11 species tested, the best inhibitory percentages were found with Euphorbia hirta, Sclerocarya birrea and Scoparia dulcis (inhibition>40%) followed by Annona senegalensis, Annona squamosa, Polygala arenaria and Ceratotheca sesamoides (inhibition>25%). The best total phenolic and tannin contents were found with S. birrea with 56.10 mg GAE/100 mg extract and 47.75 mg TAE/100 mg extract, respectively. E hirta presented the higher total flavonoids (9.96 mg QE/100 mg extract). It's was found that Sclerocarya birrea has inhibited all enzymes at more than 30% and this activity is correlated to total tannins contents. Contrary to S. birrea, the enzymatic activities of E. hirta and S. dulcis are correlated to total flavonoids contents. Present findings suggest that the methanolic extracts of those plant species are potential inhibitors of GST, AChE, CES and XO and confirm their traditional uses in the treatment of mental disorders, gout, painful inflammations and cardiovascular diseases.
The Struggle of Communist Society against the Capitalist Society and Religion  [PDF]
Coulibaly Yacouba, Xinmin Gao, Xixiang Sun
Open Journal of Philosophy (OJPP) , 2016, DOI: 10.4236/ojpp.2016.64040
Abstract: The capitalist system of exploitation of workers opened the door to the process of class conflict and created opposite social class such as bourgeoisie (those who own the means of production in capitalist society) and proletariat (individuals with labor power). That conflict would be solved, according to Marx, through revolutionary struggle. In this conflict, the proletariat will rise up against the bourgeoisie and establish a communist society. Marx and Engels gave some description of communist society: Abolition of property in land, centralization of credit in the hands of the state, centralization of the means of communication and transport in the hands of the state, extension of factories and instruments of production owned by the state, free education for all children in public schools etc. (Boyle & Marx, 2004). A communist party is a political party that advocates the application of the social and economic principles of communism through state policy.
Eminence of the Mind over the Body  [PDF]
Belko Ouologueme, Yacouba Coulibaly
Open Journal of Philosophy (OJPP) , 2019, DOI: 10.4236/ojpp.2019.93019
Abstract: The mind-body problem is far to be an old issue because it keeps rising new understanding and perception without ceasing. In the contemporary philosophy of mind, the essence of the question should not be any more whether there is a distinction between mind and body. Rather philosophers should be more focused on the interaction between mind and body. The new interest is how does it happen? This article argues the eminence of the mind over the body. Mind-body interaction is not equal. It is rather the relation of dominion in which the mind masters the body. When the contrary happens, we call that misleading. In that case, the man becomes a slave of passion going here and there without focus. Whenever the mind remains in control, man reaches certainly to the goal.
Design of High Gain and Broadband Antennas at 60?GHz for Underground Communications Systems
Yacouba Coulibaly,Mourad Nedil,Larbi Talbi,Tayeb A. Denidni
International Journal of Antennas and Propagation , 2012, DOI: 10.1155/2012/386846
Abstract: A new broadband and high gain dielectric resonator antenna for millimeter wave is presented. The investigated antenna configuration consists of a periodic square ring frequency selective surfaces on a superstrate, an aperture-coupled scheme feed, an intermediate substrate, and a cylindrical dielectric resonator. This antenna is designed to cover the ISM frequency band at 60 GHz (57 GHz–64 GHz). It was numerically designed using CST microwave Studio simulation software package. Another prototype with a plain dielectric superstrate is also studied for comparison purposes. A bandwidth of 13.56% at the centered frequency of 61.34 GHz and a gain of 11 dB over the entire ISM band have been achieved. A maximum gain of 14.26 dB is obtained at 60 GHz. This is an enhancement of 9 dB compared to a single DRA. HFSS is used to validate our antenna designs. Good agreement between the results of the two softwares is obtained. With these performances, these antennas promise to be useful in the design of future wireless underground communication systems operating in the unlicensed 60 GHz frequency band.
Appropriate training and retention of community doctors in rural areas: a case study from Mali
Monique Van Dormael, Sylvie Dugas, Yacouba Kone, Seydou Coulibaly, Mansour Sy, Bruno Marchal, Dominique Desplats
Human Resources for Health , 2008, DOI: 10.1186/1478-4491-6-25
Abstract: Programme evaluation distinguished trainees' opinions, competences and behaviour. Data were collected through participant observation, group discussions, satisfaction questionnaires, a monitoring tool of learning progress, and follow up visits. Retention was assessed for all 65 trainees between 2003 and 2007.The programme consisted of four classroom modules – clinical skills, community health, practice management and communication skills – and a practicum supervised by an experienced rural doctor. Out of the 65 trained doctors between 2003 and 2007, 55 were still engaged in rural practice end of 2007, suggesting high retention for the Malian context. Participants viewed the training as crucial to face technical and social problems related to rural practice. Discussing professional experience with senior rural doctors contributed to socialisation to novel professional roles. Mechanisms underlying training effects on retention include increased self confidence, self esteem as rural doctor, and sense of belonging to a professional group sharing a common professional identity. Retention can however not be attributed solely to the training intervention, as rural doctors benefit from other incentives and support mechanisms (follow up visits, continuing training, mentoring...) affecting job satisfaction.Training increasing self confidence and self esteem of rural practitioners may contribute to retention of skilled professionals in rural areas. While reorientations of curricula in training institutions are necessary, other types of professional support are needed. This experience suggests that professional associations dedicated to strengthening quality of care can contribute significantly to rural practitioners' morale.Staffing of health centres in rural and remote areas is a problem all over the world, affecting particularly sub-Saharan African countries [1-3]. In Mali, a country with critical shortage of health professionals [4], overall availability of skilled health w
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