Littérature scientifique sur le sujet « Greater Lomé »
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Articles de revues sur le sujet "Greater Lomé"
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Blakime, Têtou-Houyo, Kossi Adjonou, Kossi Komi, Atsu K. Dogbeda Hlovor, Kodjovi Senanou Gbafa, Jean-Bosco Benewinde Zoungrana, Botolisam Polorigni et Kouami Kokou. « Dynamics of Built-Up Areas and Challenges of Planning and Development of Urban Zone of Greater Lomé in Togo, West Africa ». Land 13, no 1 (11 janvier 2024) : 84. http://dx.doi.org/10.3390/land13010084.
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The expansion of African cities leads to the occupation of peripheral urban areas without respecting planning rules. The Greater Lomé (Togo) is no exception to this phenomenon of high-speed horizontal spreading, which causes recurrent flooding. The objective of this research is to understand the spatio-temporal changes in the dynamics of built-up areas in Greater Lomé. The methodology used is based on the analysis of Landsat images from the years 2007, 2012, 2016, and 2020 coupled with direct field observations and a literature review. The results showed an increase in residential areas to the detriment of the other land use/cover types. Estimated at 15,481 ha in 2007, the built-up area reached 35,521 ha in 2020, an increase of 33% to the detriment of vegetation and cultivation areas. This increase was marked by constructions in the floodplain of the Zio River. The field surveys revealed an increase in the density of most of the agglomerations. From 1863 ha in 2007, they increased to 14,485 ha in 2020, an increase of 12,622 ha or approximately 33%. These results indicate that attention needs to be paid to both the planning and control of the development of spaces in the outlying areas of Greater Lomé.
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Atator, Lawson Tevi, Kamou Hodabalo et Akpavi Ben Semihinva. « Methane Emissions from Landfills Sites and Their Contribution to Global Climate Change in the Greater Lomé Area of Togo (West Africa) ». Environment and Pollution 13, no 1 (12 janvier 2024) : 23. http://dx.doi.org/10.5539/ep.v13n1p23.
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This study was carried out in the city of Lomé in Togo. The study looked at the contribution of illegal waste landfills to climate change. The focus was on the quantities of methane released by uncontrolled landfills. In order to achieve the objectives, set by this study, the quantity of methane was recorded at twenty (20) landfills in thirteen (13) localities using microsensors over a period of thirty-two (32) days. The measurements were taken at the landfills with the measuring device stationed in the middle of the landfill at a height of 25 cm above the waste. The data collected was processed and a probability diagram was drawn up, making it possible to assess whether or not a set of data follows a given distribution such as the normal or Weibull distribution. Similarly, the contribution of each of the landfills to climate change was determined. During the measurement period, it was found that the TOGBLEKOPE 2 (6.338 g/m3 ± 4.881) with a contribution of 133.09; AMOUTIEVE (5.565 g/m3 ± 2.889) with a contribution of 116.86; ADETIKOPE GUERINKA (5.56 g/m3 ± 2.123) with a contribution of 116.76; GBOSSIME (5.323 g/m3 ± 4.442) with a contribution of 111.78; HOUNBI (4.702 g/m3 ± 3.59) with a contribution of 98.742; ADETIKOPE KPETAVE (4.363 g/m3 ± 2.841) with a contribution of 91.62 and NYEKONAKPOE 2 (4.017 g/m3 ± 3.067) with a contribution of 84.357; release more methane into the atmosphere. This shows the contribution of landfill sites in the fight against climate change.
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Prata, Ndola, Natalie Morris, Komlan Kwassi Agbovi et Orlando Hernandez. « Does time matter ? cross–sectional evaluation of mhealth program enrollment duration on healthy behaviors among key populations in Lomé ». MOJ Public Health 8, no 5 (19 septembre 2019) : 172–80. http://dx.doi.org/10.15406/mojph.2019.08.00304.
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Context: Key populations (KP) in Togo, including men who have sex with men and female sex workers, experience disproportionately high rates of HIV prevalence. In response to this situation, USAID/West Africa and FHI360 established the PACTE–VIH regional HIV/AIDS project, which utilized mobile health (mHealth) to send reminders to enrolled participants on ways to reduce the risk of HIV infection. While mHealth programs are known to be effective in improving HIV–related health behavior outcomes, the role of length of time enrolled in a mHealth program is not well understood. Methods: To assess whether there was a relationship between time enrolled in the PACTE–VIH mHealth program and adoption of HIV prevention behavior, we use data from an operations research study conducted in Lomé, Togo, in 2016 with 1005 KP and employ logistic regression analysis. Results: The odds of adopting prevention behaviors were higher with each additional month enrolled in the program (OR: 1.62; 95% CI 1.19–2.20). Fully adjusted (age and marital status) logistic regression models demonstrated no significant difference in odds of adopting prevention behavior between enrollment times of less than six months and any category greater than six months. Conclusion: Time does matter for adoption of HIV prevention behaviors. However, more studies are needed to better understand what length of time enrolled in a program truly affects behavioral outcomes.
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A., Amadou, Sonhaye L., Douaguibe B., Tchaou M., Agbangba KA., Watara G., Adjenou V. et N’dakena K. « Echographie Doppler Arterielle Testiculaire Dans L’infertilite Masculine A Lome ». European Scientific Journal, ESJ 13, no 6 (28 février 2017) : 449. http://dx.doi.org/10.19044/esj.2017.v13n6p449.
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Objective: Determine the relationship between the testicular arterial resistance index (IR) and spermatogenesis. Material and method: prospective analytical study over a period of 12 months at CHU campus and National Institute of Hygiene of Lomé. The parameters studied were anomalies of sperm count, sperm volume, testis volume, and resistance index (RI). The study of the correlation between our variables was done using the Chi square test (χ2). Results: The mean age of men was 36.26 years. Sperm volume was normal in 73% men and abnormal in 27% men. 65% had normal sperm counts, and 35% had abnormal sperm counts. The normal testicular volume was found in 42% men and 58% had an abnormal testicular volume (hypotrophic testis). 51% men had the pathological RI while 49% had a normal RI. There was no statistically significant relationship between testicular volume and sperm count. Also, no statistically significant relationship between RI and testicular volume. But, there was a statistically significant correlation between RI and sperm count. No statistically significant difference between RI and sperm volume. Conclusion: RI can be used with sperm analysis and hormonal studies as part of the clinical evaluation of infertile men. An intratesticular RI greater than 0.6 is associated with decreased total motile sperm.
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PIO, Machihude, Abalo Mario BAKAI, Bénédict SOUHO, Edabi OTOYI, Kpatekana SIMLAWO, Borgotia D. ATTA, Tchaa TCHEROU et al. « Abdominal Aortic Aneurysms : Epidemiological, Clinical and Echographic Aspects in The Health Structures of Lomé and At The Kara University Hospital (TOGO) ». Journal Of Hypertension And Cardiology 3, no 3 (10 janvier 2023) : 8–17. http://dx.doi.org/10.14302/issn.2329-9487.jhc-22-4362.
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Objective To describe the epidemiological, clinical and arterial Doppler ultrasound aspects of abdominal aortic aneurysm (AAA). Material and methods This is a prospective study with descriptive and analytical aims carried out from January 2019 to March 2022 (3 years) at the cardiovascular exploration center (CEC) "Saint-Esprit" of the association of the people's doctors for the research on cardiovascular diseases (AMP-MCV), at the clinic "Le Printemps" and at the University Hospital of Kara. All patients who underwent arterial Doppler ultrasound of the lower limbs for any reason in these centers during the study period were included. Ultrasound scans were performed or confirmed by a physician with a diploma specializing in vascular Doppler ultrasound. Results We retained 32 Doppler ultrasound scans out of 739 performed for AAA with a frequency of 4.38%. The mean age was 73.5± 9.07 years. The sex ratio M/F was 1.4. The cardiovascular medical history (84.38%) found was: hypertension (33.33%), diabetes (18.52%), dyslipidemia (33.33%) and a combination of diabetes and hypertension (14.81%). The circumstances of discovery were: downstream MI ischemia (72%), incidental finding on abdominal ultrasound (15.63%) and De bakey sign (6.25%). The location of the aneurysms was subrenal (84.4%), suprarenal (9.4%) and both (6.2%). AAAs were fusiform (71.9%) and saccular (28.1%). The size of the aneurysms was greater than 5 cm in 78.17% of patients. High blood pressure increases the probability of the occurrence of subrenal AAA while dyslipidemia increases the occurrence of fusiform AAA. Diabetes increases the probability of occurrence of AAA larger than 7cm. AAAs were thrombosed in 75% of patients. There were extensions of the aneurysms to the iliac arteries in 70.59%. Downstream embolic complications represented 46.88%, in the form of occlusions and tight stenoses. Spontaneous mortality was 81.24%. Conclusion Arterial Doppler ultrasonography is a very important tool in the screening, positive and lesion diagnosis of AAA. The risk factors for AAA are: age over 60 years, male gender, hypertension, diabetes and dyslipidemia. Early detection remains essential, because the spontaneous prognosis is poor.
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Traoré, Fousseyni, Francis Eshun, Boubacar Togo, Jean Jacques Atteby Yao et Mbuli Robert Lukamba. « Neuroblastoma in Africa : A Survey by the Franco-African Pediatric Oncology Group ». Journal of Global Oncology 2, no 4 (août 2016) : 169–73. http://dx.doi.org/10.1200/jgo.2015.001214.
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Purpose Neuroblastoma is a sympathoadrenal lineage neural crest–derived tumor. It is the third most common childhood malignancy in the Western world. Studies from the United States show that black patients with neuroblastoma have a greater proportion of high-risk neuroblastoma with poorer prognosis compared with white patients. In Africa, there are few published data on the epidemiology and management of neuroblastoma. The primary aim of this study was to assess the diagnostic and therapeutic resources available for the management of neuroblastoma within the Franco-African Pediatric Oncology Group (GFAOP). Methods A survey was conducted in the pediatric oncology centers of the GFAOP. Participating GFAOP centers were Abidjan, Algiers, Bamako, Dakar, Lubumbashi, Lomé, Ouagadougou, Rabat, Tananarive Antananarivo, and Tunis. Questionnaires were sent out by e-mail to the principal investigators at each participating GFAOP center in December 2013. Results Ten (62%) of 16 GFAOP centers responded to the questionnaire. Neuroblastoma represented only 3% to 5% of childhood cancers in the sub-Saharan African centers, with the exception of Antananarivo, where it represented 7.5%. In contrast, in the northern African centers of Tunis, Rabat, and Algiers, neuroblastoma accounted for 30%,10%, and 7% of childhood cancer, respectively. At initial diagnosis, 50% to 80% of patients had metastatic neuroblastoma in eight of 10 centers. Conclusion Based on this survey, neuroblastoma seems to be less common in sub-Saharan Africa. The proportion of patients with metastatic neuroblastoma seems to be higher than reported in Western countries.
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Laakso, Liisa. « The Clinton Administration and Africa : A View from Helsinki, Finland ». Issue : A Journal of Opinion 26, no 2 (1998) : 52–57. http://dx.doi.org/10.1017/s0047160700502959.
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Africa occupies a special position in the foreign policies of the Nordic countries of Denmark, Finland, Iceland, Norway, and Sweden. In spite of their limited capacities, lack of colonial ties with Africa, or any significant economic interests in Africa, the Nordic countries have attained a relatively high profile, especially in Southern Africa. After Finland and Sweden joined the European Union (EU) in 1995, Africa assumed an even greater level of foreign policy significance for the Nordic countries. Most notable in this regard is Finland’s assumption in 1999 of the EU presidency, a position that makes Finland responsible for the negotiations over the continuation of the EU’s Lomé Convention with 71 countries of Africa, the Caribbean, and the Pacific. It is in this context that this article assesses Nordic perceptions of the Clinton administration’s foreign policy toward Africa. It is important to note, however, that there is no one monolithic “Nordic perspective.” The opinions and approaches documented in policy papers or informal statements by individual civil servants following African affairs can widely vary. People working with development cooperation, for example, tend to be more recipient-oriented than those looking at Africa from a more general foreign policy point of view. The tradition of outspoken human rights policy still differentiates Norwegian and Swedish approaches from the cautious policy of Finland. Yet behind these different tones, one can distinguish common premises stemming from the many similarities of the Nordic countries and their conscious efforts to generate coherent, coordinated foreign policies toward Africa.
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Akinocho, Herve, Ken Brackstone, Nia Eastment, Jean-Paul Fantognon et Michael G. Head. « COVID-19 vaccine hesitancy and conspiracy beliefs in Togo : Findings from two cross-sectional surveys ». PLOS Global Public Health 4, no 2 (29 février 2024) : e0002375. http://dx.doi.org/10.1371/journal.pgph.0002375.
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Togo is a low-income country in West Africa. Estimates from Our World in Data suggest that only 25% of the Togolese population have received at least one dose of any COVID-19 vaccine by June 2023. Whilst the early phase of the pandemic vaccine rollout across 2021 was dominated by higher-income countries taking much of the available supply, there have long been sufficient supplies for all nations. Thus, there remains a need to understand reasons for low uptake in countries such as Togo, here focusing on population confidence and trust, essentially characteristics that could potentially be addressed within health promotion strategies. Two cross-sectional telephone surveys of Togo residents were conducted in December 2020 and January 2022. These surveys asked questions around perceptions of COVID-19, trust in public health messaging, belief in conspiracy theories, and hesitancy around COVID-19 vaccination. Analyses here focus on unvaccinated respondents. Across Survey 1 (N = 1430) and Survey 2 (N = 212), 65% of respondents were men, and 47% lived in Lomé (capital city of Togo). Between Surveys 1 and 2, overall hesitancy (33.0% to 58.0% respectively) and beliefs in conspiracy theories (29% to 65%) significantly increased. Using logistics regression, governmental mistrust was the strongest significant predictor of hesitancy (OR: 2.90). Participants who indicated agreement or uncertainty with at least one conspiracy belief also predicted greater vaccine hesitancy (OR: 1.36). Proactive approaches to public health messaging, that better understand reasons for hesitancy across different demographics, can support uptake of COVID-19 vaccinations within Togo. This includes health promotion campaigns that use locally and nationally trusted knowledge providers (e.g. the health service or religious leaders) for greatest effectiveness at reducing impact of misinformation. Key future research should focus around knowledge gaps and areas of mistrust created by the pandemic, such as the impact of misinformation upon routine immunisation uptake.
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Lee, B. P., J. Green et S. T. Chiang. « Responses of single phrenic motoneurons to altered ventilatory drives in anesthetized dogs ». Journal of Applied Physiology 68, no 5 (1 mai 1990) : 2150–58. http://dx.doi.org/10.1152/jappl.1990.68.5.2150.
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We studied the effects of altered ventilatory drives on the activity of the whole phrenic nerve and single phrenic motoneurons in dogs anesthetized with alpha-chloralose and paralyzed with gallamine triethiodide. Single phrenic motoneurons were classified as either late-onset or early-onset motoneurons (LOM and EOM, respectively), depending on the time of onset of their activity during inspiration. Increase in ventilatory drive was induced by altering chemical drive with changes in arterial blood gases and also by altering the vagal afferent contribution to ventilatory drive. The latter was accomplished by inducing pulmonary gas embolism (PGE) during hyperoxia. Whole phrenic nerve activity was increased by both types of increase in ventilatory drive. In both cases, changes in the firing pattern of LOMs and EOMs were responsible for the increased phrenic output. The changes in post-PGE firing pattern of the LOMs generally consisted of a shift in the time of onset to an earlier point in inspiration and an increase in the number of spikes per inspiratory cycle. Vagotomy abolished the difference between the contributions of LOMs and EOMs to the phrenic response to PGE. Data from dogs studied while they were breathing spontaneously were qualitatively the same as those from the paralyzed animals, indicating no major role for phasic volume feedback in these responses. Our data regarding altered chemical drive are similar to those reported earlier in other species, whereas those regarding PGE demonstrate that vagally mediated increases in ventilatory drive affect both LOMs and EOMs, although LOMs are affected to a greater degree.(ABSTRACT TRUNCATED AT 250 WORDS)
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Butler Pagnotti, Rachel M., Le Hanh Hua et Justin B. Miller. « A-70 Differences in Cognition and Disease Characteristics in Adult Vs. Late Onset Multiple Sclerosis ». Archives of Clinical Neuropsychology 36, no 6 (30 août 2021) : 1112. http://dx.doi.org/10.1093/arclin/acab062.88.
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Abstract Objective Cognitive impairment is a common sequelae of multiple sclerosis(MS), however, relatively little is known about cognitive impairment in late-onset MS (LOMS; symptom onset >50 years old). The present study investigated differences in disease characteristics and cognition in LOMS and adult-onset MS (AOMS). Methods Archival medical records and neuropsychological evaluations from an MS specialty center were reviewed. Differences in disease characteristics between 57 LOMS and 124 AOMS patients were compared using chi-square or ANOVA. To investigate differences in cognitive functioning, age-adjusted standardized scores were compared via ANCOVA, using cardiac risk factors and disease duration as covariates. Results Compared to AOMS (age range: 21–88; mean age: 49.66 +/−12.83), LOMS patients (age range 42–82; mean age: 61.88 +/− 8.57) had significantly more cardiac comorbidities (mean: 1.12+/−1.1 vs. 0.6+/−0.9; p < 0.01), shorter disease duration (mean years: 13.14+/−7.9 vs. 21.0+/−12.6; p < 0.001), and shorter time to diagnosis (mean years: 3.0+/−4.2 vs 6.5+/−8.5; p < 0.01). LOMS patients had similar Expanded Disability Status Scale scores and number of prescribed disease-modifying therapy as AOMS. LOMS patients demonstrated greater impairment on Brief Visuospatial Memory Test-Revised learning (F(1,169) = 8.03, p < 0.05; d = 0.36) and delayed recall (F(1,169) = 4.44, p < 0.05; d = 0.27), and on Wechsler Adult Intelligence Scale-4th edition Digit Span Backward (F(1,176) = 5.68, p < 0.05; d = 0.41) and Sequencing (F(1, 176) = 11.90, p < 0.001; d = 0.55) subtests. Conclusion Despite a shorter disease duration and quicker diagnosis, LOMS patients demonstrate similar levels of physical impairment. Moreover, even after accounting for differences in disease duration and cardiac risk, LOMS showed a greater burden of cognitive impairment than AOMS, which taken together, suggests an elevated rate of disease progression in LOMS.
Thèses sur le sujet "Greater Lomé"
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Simson, William Ronald. « Removing Reds from the Old Red Scar : Maintaining and Industrial Peace in the East Tennessee Copper Basin from the Great War through the Second World War ». Digital Archive @ GSU, 2010. http://digitalarchive.gsu.edu/history_diss/17.
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This study considers industrial society and development in the East Tennessee Copper Basin from the 1890s through World War II; its main focus will be on the primary industrial concern, Tennessee Copper Company (TCC 1899), owned by the Lewisohn Group, New York. The study differs from other Appalachian scholarship in its assessment of New South industries generally overlooked. Wars and increased reliance on organic chemicals tied the basin to defense needs and agricultural advance. Locals understood the basin held expanding economic opportunities superior to those in the surrounding mountains and saw themselves as participants in the nation’s industrial and economic progress, and a vital part of its defense. The study upends earlier scholarship contending local industrial concerns acted proactively to challenges from farmers harmed by industrial pollution; investigation shows firms hesitated to initiate new production processes and manipulated local elections. Partisan developments woven amid all this underscore errors in assuming ancient regional affinity for Republicans. Confederate heritage gave Democrats an historic advantage that fractured before New Deal progressivism and expanding basin Republican power. Markets forced basin firms to merge and embrace technological change affecting working people’s relationships, forcing workers to improve skills or settle for low-skill jobs. Excepting TCC managers and supervisory staff, provincialism ruled; suspicions and competitiveness among workers grew as most miners lived a few scattered villages and most managers and craftsmen settled in the basin’s “Twin-cities” district. Early union efforts collapsed before union mismanagement, rational management and a company union based upon Sam Lewisohn’s ideals. Management managed to wrest control of its industrial relations despite the effects of Depression and the New Deal’s empowerment of workers. Workers’ infighting, reflecting neighborhood demographics and ideological differences, benefitted TCC; it convinced locals TCC could best protect industrial peace. The submissive AFL union installed fit of ownership’s nationally recognized program for industrial relations reliant on federal power. After competition crippled local industry, locals continued their reliance on government: to investigate the medical consequences of extraction work and coordinate environmental restoration. Recent regional anti-government populism makes the basin’s peculiar historic reliance on federal help engaging.
Livres sur le sujet "Greater Lomé"
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RAF top gun : The story of Battle of Britain ace and world air speed record holder Air Cdre E.M. 'Teddy' Donaldson CB, CBE, DSO, AFC*, LoM (USA). Barnsley, England : Pen & Sword Aviation, 2008.
Trouver le texte intégralChapitres de livres sur le sujet "Greater Lomé"
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Lami, Giulia. « Political Europe : The Cold War and the Great Decolonisation—From the Yaoundé Convention to Lomé Conventions ». Dans 100 Years of World Wars and Post-War Regional Collaboration, 101–18. Singapore : Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9970-2_11.
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Tutin, Caroline E. G. « Ranging and social structure of lowland gorillas in the Lopé Reserve, Gabon ». Dans Great Ape Societies, 58–70. Cambridge University Press, 1996. http://dx.doi.org/10.1017/cbo9780511752414.007.
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Heller, Joseph. « The Soviet Union and Israel : from the Gromyko declaration to the death of Stalin (1947–53) ». Dans The United States, the Soviet Union and the Arab-Israeli Conflict, 1948-67. Manchester University Press, 2016. http://dx.doi.org/10.7228/manchester/9781526103826.003.0002.
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Communist ideology negated Zionism’s legitimacy, which did not bode well for lomg-term Soviet-Israeli relations. Even in short-term policies the relations were bound to explode because of Israel’s pressure for Jewish emigration. Under Stalin’s order the the Soviet-Jewish writer Ilya Ehrenburg repudiated the existence of Jewish nation. Soviet realpolitik granted greater credence to the strategic assets of the Arab world. Israel’s ‘non-identification’ policy of neutrality counted very little with Soviet Middle Eastern policy. The turning-point was the Korean war, in which Israel identified itself with the US policy of military intervention. Relations exploded in 1953 after Israeli extremists blew up the Soviet embassy and the Kremlin severed relations. Moreover, American economic aid to Israel in 1949 was interpreted by Moscow as evidence of Israel’s western orientation. Stalin’s anti-Semitism reached its peak in the Prague and Doctors trials.
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Ishaya, Tanko. « Towards Management of Interoperable Learning Objects ». Dans Encyclopedia of Multimedia Technology and Networking, Second Edition, 1406–15. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-014-1.ch190.
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Developments in the Internet and the World Wide Web (WWW) technologies have led to an evolving trend in Electronic learning (e-learning). E-learning is now one of the most fast growing trends in computing and higher education (Ishaya & Wood, 2005) and certainly becoming a dominant way of learning in workplace settings across other organizations (Mungania, 2003). From its initial roots as an information-sharing tool, the Web has seen an exponential growth into a myriad of applications, ranging from very serious e-business to pure leisure environments. Likewise, research into technology support for education has quickly recognized the potential and possibilities for using the Web as a learning tool (Ishaya, Jenkins, & Goussios, 2002). Thus, the Web technology is now an established medium for promoting student learning, and today there are a great many online learning materials, tutorials, and courses supported by different learning tools with varying levels of complexity. It can be observed that there are many colleges and universities, each of which teaches certain concepts based on defined principles that remain constant from institution to institution. This results in thousands of similar descriptions of the same concept. This means that institutions spend a lot of resources producing multiple versions of the same learning objects that could be shared at much lower cost. The Internet is a ubiquitous supporting environment for sharing of learning materials. As a consequence, many institutions take advantage of the Internet to provide online courses (Ishaya et al., 2002; Jack, Bonk, & Jacobs, 2002; Manouselis, Panagiotou, Psichidou, & Sampson, 2002). Many other agencies have started offering smaller and more portable learning materials defined as learning objects (Harris, 1999; POMETEUS, 2002). Common standards for metadata, learning objects, and services are mandatory for the success of Web-based learning, which is why the creation of such standards for learning objects and related standards has being one of focus for research and development within the past few years. This includes the creation of accredited standards from the IEEE Learning Technology Standards Committee (LTSC) for Learning Object Metadata (LOM), Sharable Content Object Reference Model (SCORM), Instructional Management System (IMS), and so on. All these metadata models define how learning materials can be described in an interoperable way. There have also been intensive developments in the area of e-learning technology and the wide variety of learning environments from many different vendors (e.g., Sakai, Moodle, and Blackboard). While most of these approaches provide a means for describing, sharing, and reusing resources, the concept of interoperability and heterogeneous access to content chunks is yet to be fully achieved. This results in thousands of similar descriptions of the same concept, even within the same learning management system (LMS), and because these concepts may have been defined using different standards, they are not interoperable. What is required therefore is a mechanism and infrastructure for supporting a interoperable system of individual components that can be assembled by mixing and matching content from multiple sources to satisfy individual learner’s requirements. See Wood and Ishaya (2005) for a personality-based approach for building learner profiles.
Actes de conférences sur le sujet "Greater Lomé"
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Pazare, Iveta. « Satversmes tiesas loma modernās demokrātijas harmonizēšanā ». Dans Latvijas Universitātes 81. starptautiskā zinātniskā konference. LU Akadēmiskais apgāds, 2023. http://dx.doi.org/10.22364/juzk.81.43.
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The paper explores the role of the constitutional review and the constitutional court in the harmonisation of modern democracy through the prism of various aspects, including newly created theories, principles, tests and other legal methods. The article will look at the dynamics of constitutional control exercised by the Constitutional Court of Latvia and the methods applied to it, as well as developments in constitutional control in times of challenges and threats to modern democracy. The thesis set out in the paper is an insight into a much broader theme that will be discussed in greater detail in the doctoral thesis by the author of the paper.
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van de Noort, Michael, Peter T. Ireland et Janendra C. Telisinghe. « Effects of Manufacturing Tolerances on Double Wall Effusion Cooling ». Dans ASME Turbo Expo 2023 : Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/gt2023-100824.
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Abstract As aeroengine designers seek to raise Turbine Entry Temperatures for greater thermal efficiencies, novel cooling schemes are required to ensure that components can survive in increasingly hotter environments. By utilising a combination of impingement cooling, pin-fin cooling and effusion cooling, Double-Wall Effusion Cooling is well equipped to achieve the high metal cooling effectiveness required for such challenges whilst keeping coolant consumption at an acceptably low level. However, this high performance can drop-off within the variability of common manufacturing tolerances, which can also expose cooling schemes to issues such as hot gas ingestion. This paper uses an experimentally validated Low Order Flow Network Model (LOM) to assess the cooling performance of a Double Wall Effusion Cooling scheme employed in a High Pressure Turbine Nozzle Guide Vane, subject to the variability of geometric parameters set by their manufacturing tolerances. The relative significance of each geometric parameter is examined by varying it individually and comparing the effects on the cooling performance. A Monte Carlo analysis is then conducted to assess the likelihood of performance variation for a baseline design. Finally, multiple optimisation studies are conducted for the cooling scheme, with the simultaneous objectives of reducing coolant usage and maximising the design tolerances to reduce manufacturing cost, all whilst maintaining acceptable metal cooling effectiveness and backflow margins.
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Hara, T., M. Iwamoto, H. Ogawa et M. Tamikawa. « PROPHYLACTIC EFFECT OF ARGIPIDINE (MD-805) ON DEVELOPMENT OF LESIONS IN RAT PERIPHERAL ARTERIAL OCCLUSION MODEL ». Dans XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644802.
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Argipidine ((2R,4R)-4-methyl-1-(N2-[(RS)-3-methyl-l,2,3,4-tetrahydroquinolinesulfonyl)-L-arginyl]-2-piperidinecarboxylie acid hydrate) is a potent and specific inhibitor of thrombin(Ki=0.039μM). We tested the effect of argipidine on a new animal model of peripheral arterial occlusion (PA0).PA0 was prepared by injection of 5% lactic acid into rat femoral artery. Macroscopic changes of legs progressed asfollows; change to violet color around whole paw (3-24hr), edema (3-24hr), gangrene of fingers (after 24hr) and mummification of whole paw (after 7 days). Pathological examination demonstrated partial deletion of arterial endotherial cells and subsequent occlusive arterial thrombosis. Coagulo-parameters in circulating blood did not change 3 hours after lactic acid injection. To evaluate the effect of tested antithrombotic drugs, sum of lesion grade of five fingers is used as an index of severity of. PA0.Single subcutaneous injection of argipidine 30 minutes before lactic acid injection, inhibited significantly development of lesions of the lower limb at doses lOmg/kg and 30mg/kg in a dose-dependent manner. The number of rats which showed moderate or severe lesion on their legs at 14 days after lactic acid injection was decreased to 2/8 in argipidine treated (30mg/kg) rats from 7/8 in control rats. But argipidine injected simultaneously with lactic acid showed weak inhibitory effect (not significant) and argipidine injected three hours after lactic acid injection did not showany inhibitory activity. Slight prophylactic effect was also found by subcutaneous injection of heparin at a dose of 900U/kg, but its effect were not significant.In a separate experiment, PT and APTT were assayed after subcutaneous injection of argipidine or heparin. Heparin (900U/kg) prolonged APTT much greater than argipidine (30mg/kg), but as for prolongation of PT, argipidine was more effective than heparin.These results suggest that extrinsic coagulation system plays an important role in initiation of lesions of this model.
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Yoshida, Junji, Masato Abe et Yozo Fujino. « Multi-Axial Hysteretic Models of Laminated Rubber Bearings ». Dans ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2934.
Texte intégralRésumé :
Base-Isolation system using laminated rubber bearings is considered to be an efficient technology of providing a mitigation of seismic damage for structures and equipments, and has proven to be reliable and cost-effective. There are many structures in various countries, which concern not only new constructions but also existing structures, especially after the Loma Prieta (1989), Northridge (1994) and Kobe (1995) earthquakes. Since seismic response of base-isolated structures greatly depends on the mechanical properties of the bearings, deep understanding of the characteristics of the bearings under the conditions of interest is essential toward a rational design of the base-isolation. Considering that the base isolation system in the two horizontal directions has already been used in the bridges and buildings, behaviors of the bearings under the multi-axial loading should be studied experimentally. In the actual design of multi-axial base-isolated structures, bilinear models have often been used independently in the two horizontal directions, and the coupling effects of hysteretic loops are not considered (AASHATO 1999; JRA 1998). Mokha et al. (1990) investigated the behaviors of Teflon friction bearings under tri-axial loading, and proposed a model for this type of bearings (Constantinou et al. 1990; Mokha et al. 1993). Multi-axial behaviors of a HDR and a steel damper have been investigated by Yasaka et al. (1988), and they empirically developed a multi-spring model, in which several bilinear springs or Ramberg-Osgood springs are circularly arranged with regular angle intervals. Huang et al. (2000) investigated the characteristics of tri-axial behaviors of a LRB and proposed a multi-axial model by considering a circular force interaction function of the bilinear model. However, systematic studies have not been conducted on the experimental investigation of several types of laminated rubber bearings. In addition, previously proposed models for laminated rubber bearings do not have definite theoretical backgrounds in the extension into multi-axial case, and they also do not consider the hardening behaviors in the large deformation range. In this paper, multi-axial restoring forces of various types of laminated rubber bearings, which have widely been used in the base-isolated bridges, are investigated experimentally. Then, a one-dimensional and two-dimensional models of the bearings are proposed on the basis of the experimental results.
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Bustinza, Juan A., Ricardo J. Rocca, Marcelo E. Zeballos et Roberto E. Terzariol. « Rerouting of a Pipeline due to Landslide Reactivation in an Andean Valley ». Dans ASME 2013 International Pipeline Geotechnical Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ipg2013-1960.
Texte intégralRésumé :
The bi-national pipeline Loma de la Lata (Argentina)-Talcahuano (Chile) belonging to Gas del Pacifico, crosses the Andes at Latitude 37.1° South (Buta Mallin pass), following the Lileo river valley. In the region, there are large ancient landslides within an area of about 50 km2, which have been attributed to Holocene glaciations and seismic activity. In the winter of 2005, when snow limited the access to the area, it was found a pressure loss, that later was attributed to a landslide in a sector of the south bank of the valley. The adiabatic expansion generated a considerable volume of frozen soil around the pipe. The following summer it was studied the characteristics of the sliding and analyzed different solutions of the affected section. The geotechnical study showed details of the slipped area and its relationships with ancient landslides. It was found by comparative analysis of aerial photographs that an old slide about 1 km3 was not fully reactivated. The general morphology has remained unchanged at least in the last 50 years, when the oldest aerial photography was taken. As additional verification, it was found that a small set of cascading ponds located in the slipped mass, has remained stable at that time, bearing the influence of the great 1960 Mw = 9.6 Valdivia earthquake. It was identified tension cracks delimiting the slipped area that was a modest portion of the historical landslide. Geotechnical parameters were estimated by back analysis of the land involved and it could establish a model for sliding mass process. A general analysis of long-term stability took into account the influence of distant earthquakes such as the subduction zone, which has a recurrence of about 100 years and other local seismic sources. Prior to define the most appropriate solution, a 250 meters long trench was dug preventively releasing the pipeline from the terrain to avoid new deformations. Among the solutions considered were the construction of an absorption system with movement monitoring, or the relocation of the trace on the opposite bank of the river. It was decided to adopt the latter solution due to the difficulty of ensuring the stability of the terrain and the inaccessibility during the winter. It implied an additional river crossing and consequently, the need to monitor the stability of the channel to the river erosion.