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Articoli di riviste sul tema "!kung (african people) – population"
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Krugliak, M., e N. Bohach. "STEREOTYPES OF THE IMAGE OF THE “COLOR” POPULATION IN AMERICAN MOVIES OF THE XX – FIRST QUARTER OF THE XXI CENTURY". National Technical University of Ukraine Journal. Political science. Sociology. Law, n. 1(53) (8 luglio 2022): 6–13. http://dx.doi.org/10.20535/2308-5053.2022.1(53).261097.
Testo completoAbstract (sommario):
The article considers the peculiarities of the stereotypical image of the “color” population in the US film industry of the XX – first quarter of the XXI century as one of the manifestations of racism; the reasons for the transfer of “ethnic stereotypes” in cinema have been identified. The brightest ethnic stereotypes in film and television are presented in the form of so-called “tropes”. The heroes of films of Asian descent were endowed with excessive militancy and the ability to master martial arts (tropes “All Asians know martial arts”, “All Chinese people know kung-fu”); Asian women were portrayed as defenseless as opposed to a strong white man (“Mighty Whitey and Mellow Yellow” trope); to describe the black hero took the trails “Humble Servant” (“Mammy”), “African-American criminal” (“Blaxploitation”), “White Savior”, “Magic Negro”, “Black Best Friend”. Latin American heroes are physically perfect, sexual and romantic (tropes “Latin Lover”, “Spicy Latina”). In 2010–2020, the “color” population in Hollywood movies is portrayed from a new angle. The main “non-white” heroes show absolute equality with whites, and sometimes dominance over them. This is a social film about problems of general scale and their perception in society, in particular homosexuality (“Moonlight”); a movie with a black superhero (“Black Panther”); a thriller about the confrontation of a black guy with a group of white killers (“Get Out”). Films of this genre are focused on the “color” spectator. The catalysts for changes in Hollywood policy were the #OscarsSoWhite (2016) and Black Lives Matter (2020) movements. As a result, there was a review of the composition of film production teams with an approximation to the proportion typical of the national population of the United States – 40 % (2020, the share of “color” actors in films was 39. %, directors – 25.4 %, writers – 25.9 %); implementation of new requirements for the Oscar (“Best Film” nomination, from 2024) with quotas on gender and racial composition of the production team, etc.
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Park, SoHye, Zachary Urdang, Julie Barta, Kuang-Yi Wen, Joseph Curry e Hee-Soon Juon. "Abstract A023: Racial differences in lung cancer burden: A retrospective analysis of TriNetX data". Cancer Epidemiology, Biomarkers & Prevention 32, n. 1_Supplement (1 gennaio 2023): A023. http://dx.doi.org/10.1158/1538-7755.disp22-a023.
Testo completoAbstract (sommario):
Abstract Background. Lung cancer is the number one cause of cancer-related deaths in the U.S. and many other countries. Lung cancer incidence and mortality rates have decreased for all races over the past 20 years, in part because of decreased tobacco use. Yet, there have been few clinical studies of lung cancer morbidity and mortality by race. The purpose of this study is to examine racial differences in lung cancer mortality in the U.S. using the electronic health records (EHR) database, TriNetX. Method. This retrospective cohort study was conducted based on the data from US Collaborative Network in TriNetX, a real-time, EHR database providing 42.7-million patient data from 49 health care organizations (HCOs). The cohort of interest was lung cancer patients in the U.S., which were identified using the ICD-10 code of C34 with an index diagnosis date of January 1, 2010. Kaplan-Meier curves, log-rank chi-square statistics, and hazard ratio (HR) were compared among different racial groups in the EHR data. Results. Of 42.7-million patients in the U.S., the majority (60.3%) were people who are non-Hispanic white (NHW) followed by people who are Black/African American (15.4%), Hispanic (7.2%), Asian (4.6%), and others (Native Hawaiian/Pacific Islander, 0.5%). 394,560 lung cancer patients were identified. Kaplan-Meier survival curves showed that Asians had the highest survival probability with median overall survival (OS) from the initial lung cancer diagnosis of 127.3 months, compared to 92.1 months for Hispanic, 69.1 months for African American/Black, 61.4 months for others, and 53.8 months for NHW. The HR was highest among NHW (HR=1.71, 95% CI=1.62-1.81), others (HR=1.62, 95% CI=1.41-1.85), African American/Black (HR=1.52, 95% CI=1.43-1.61), and Hispanic patients (HR=1.40, 95% CI=1.30-1.52) compared to Asian patients Conclusion. These findings suggest racial disparities in lung cancer survival, with NHW having the lowest and Asians having the highest median survival. These findings are inconsistent with the results from the Multiethnic Cohort study (prospective population based study), which reported blacks having the lowest median survival. It indicates that there are different racial burdens of lung cancer from clinical data and population data. Further analyses are needed to adjust potential confounders such as smoking status and stage of diagnosis. Citation Format: SoHye Park, Zachary Urdang, Julie Barta, Kuang-Yi Wen, Joseph Curry, Hee-Soon Juon. Racial differences in lung cancer burden: A retrospective analysis of TriNetX data [abstract]. In: Proceedings of the 15th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2022 Sep 16-19; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2022;31(1 Suppl):Abstract nr A023.
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Read, Dwight W. "Emergent Properties in Small-Scale Societies". Artificial Life 9, n. 4 (ottobre 2003): 419–34. http://dx.doi.org/10.1162/106454603322694852.
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A multi-agent simulation is used to explore the relationship between the micro and the macro levels in small-scale societies. The simulation demonstrates, using an African hunter-gatherer group (the !Kung san) as a case study, the way in which population stability may arise from culturally framed, micro-level decision making by women about spacing of births. According to the simulation, population stability as an emergent property has different implications, depending on resource density. Data on Australian hunter-gatherer groups are presented that support the implications of the simulation. !Kung san micro-level cultural rules on incestuous marriages are shown to have macro-level consequences in the form of marriages between residential camps. Between-camp marriages have significant implications for access to resources and thereby for population dynamics of the group as a whole.
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Keech, Ken, Betty Routhouska e Nicole L. Fonger. "People, Place, and Population Predictions". Mathematics Teacher: Learning and Teaching PK-12 115, n. 8 (agosto 2022): 566–75. http://dx.doi.org/10.5951/mtlt.2021.0120.
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Nesic, Milica J., e Nadja P. Maric. "Population-based differences in immune system response contribute to an increased risk of schizophrenia in African migrants?" Reviews in the Neurosciences 29, n. 3 (28 marzo 2018): 347–53. http://dx.doi.org/10.1515/revneuro-2017-0037.
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AbstractAmong the highest incidences of schizophrenia is the one documented in second-generation migrants of African descent in the Western countries. Interestingly, people of African and European ancestry demonstrate significant genetic-based differences in immune system regulation and response. As a result, the pro-inflammatory phenotype is more pronounced in people of African descent than it is in Europeans. At the same time, the role of the immune system in the etiology of schizophrenia is gaining increased recognition. Here, we propose that the population-specific genetic variation within the immune system interacts with unfavourable environments to contribute to a higher risk of schizophrenia in people of African ancestry. Our hypothesis is supported by recent findings from two separate fields of research−population genetics and psychoneuroimmunology. Moreover, we highlight the need to include African populations in genetic studies of schizophrenia.
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Gbessemehlan, A., M. Guerchet, C. Adou, J. P. Clément, B. Ndamba-Bandzouzi, P. Mbelesso, D. Houinato e P. M. Preux. "Depression and anxiety among older people in central africa: Epidemca population-based study". European Psychiatry 64, S1 (aprile 2021): S238—S239. http://dx.doi.org/10.1192/j.eurpsy.2021.639.
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IntroductionThe burden of depression and anxiety is poorly documented in Central African populations.ObjectivesTo present the epidemiology of depressive and anxiety disorders among older people in two Central African countries.MethodsA cross-sectional population-based study was carried out in Republic of Congo (ROC) and Central African Republic (CAR) between 2011 - 2012 among people aged ≥ 65 years (EPIDEMCA study). Data were collected using a standardized questionnaire and participants underwent a brief physical examination. Depression and anxiety symptoms were ascertained using a community version of the Geriatric Mental State (GMS-B3). Probable cases were defined as having a GMS-AGECAT score ≥ 3. Logistic regression models were used to investigate the association between potential risk factors collected and presence of at least one of both symptoms.ResultsOverall 2002 participants were included in the EPIDEMCA study. Median age of the participants was 72 years [interquartile range: 68 – 78 years] and 61.8% were females. Prevalence was 38.1% (95% Confidence Interval: 35.9% - 40.2%) for depression, 7.7% (95% CI: 6.5% - 8.9%) for anxiety. In total 40.1% had least one of both symptoms. In multivariable models, the following factors were associated with the presence of at least one of both symptoms: female sex, residence area, frailty, cognitive disorders, a high happiness score (protective) and hypertension (adjusted Odds Ratios from 1.3 to 1.7; p<0.01).ConclusionsIn light of the high prevalence of both psychiatric symptoms among Central African older people, evidence on their epidemiology is important for better management and policy planning.
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Ilozue, C., B. Howe, S. Shaw, K. Haigh, J. Hussey, DA Price e DR Chadwick. "Obesity in the HIV-infected population in Northeast England: a particular issue in Black-African women". International Journal of STD & AIDS 28, n. 3 (10 luglio 2016): 284–89. http://dx.doi.org/10.1177/0956462416649131.
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People living with HIV are surviving longer on successful antiretroviral therapy and obesity rates are increasing. We sought to determine the prevalence of being overweight or obese in a regional population of people living with HIV and to explore the demographic and clinical characteristics associated with obesity or being overweight. Data on patients attending three Northeast England clinics were collected including body mass index and demographics. The prevalence of being overweight (body mass index ≥ 25 kg/m2) or obese (body mass index ≥ 30 kg/m2) was determined and compared with regional population data. Associations between being overweight or obese and demographic and other data were further explored using logistic regression models. In 560 patients studied (median age 45 years, 26% Black-African and 69% male), 65% were overweight/obese and 26% obese, which is similar to the local population. However, 83% and 48% of Black-African women were overweight/obese or obese, respectively, with 11% being morbidly obese (body mass index > 40 kg/m2). In the multivariate analyses, the only factors significantly associated with obesity were Black-African race (adjusted odds ratio 2.78, 95% confidence interval 1.60–4.85) and type 2 diabetes (adjusted odds ratio 4.23, 95% confidence interval 1.81–9.91). Levels of obesity and overweight in people living with HIV are now comparable to the levels in the local population of Northeast England; however, the prevalence is significantly higher in Black-African women. Given the additional risk factors for cardiovascular disease inherent in people living with HIV, better strategies to prevent, identify and manage obesity in this population are needed.
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Harrison, Glynn, Shazad Amin, Swaran P. Singh, Tim Croudace e Peter Jones. "Outcome of psychosis in people of African–Caribbean family origin". British Journal of Psychiatry 175, n. 1 (luglio 1999): 43–49. http://dx.doi.org/10.1192/bjp.175.1.43.
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BackgroundAn increased incidence of psychotic disorders has repeatedly been reported among African–Caribbeans in the UK.AimsTo test whether the increased incidence of psychotic disorders in first-and second-generation African–Caribbeans in the UK could be caused by a relative excess of affective-related psychoses with good prognosis.MethodThirty-three patients of African–Caribbean family origin identified in a population-based study of first-episode psychoses were compared with the remaining cases. Three-year outcomes and patterns of course were compared.ResultsThere was a trend for better outcomes in African–Caribbean patients for symptoms and social disability, but patterns of course were similar (odds ratio=0.9 (–0.50 to –2.00)). Pattern of course improved after adjustment for confounding by gender, social class, age, diagnosis and duration of untreated illness (odds ratio=0.59 (–0.21 to –1.66)). Diagnostic profiles were similar, with no evidence of greater diagnostic instability in the African–Caribbean group.ConclusionPattern of course of psychosis did not differ significantly by ethnic family background. An excess of good-prognosis affective psychoses is an unlikely explanation for increased rates of psychosis in African–Caribbeans.
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Adelman, Simon, Martin Blanchard, Greta Rait, Gerard Leavey e Gill Livingston. "Prevalence of dementia in African–Caribbean compared with UK-born White older people: two-stage cross-sectional study". British Journal of Psychiatry 199, n. 2 (agosto 2011): 119–25. http://dx.doi.org/10.1192/bjp.bp.110.086405.
Testo completoAbstract (sommario):
BackgroundPreliminary studies in the UK, all using screening instruments of unknown cultural validity, indicate that there may be an increased prevalence of dementia in African–Caribbean people, possibly related to vascular risk factors and potentially amenable to preventative measures.AimsTo determine the prevalence of dementia in older people of African–Caribbean country of birth compared with their White UK-born counterparts.MethodA total of 218 people of African–Caribbean country of birth and 218 White UK-born people aged ⩾60 years were recruited from five general practices in North London. Those who screened positive for cognitive impairment using a culturally valid instrument were offered a standardised diagnostic interview. Two independent assessors diagnosed dementia according to standard operationalised criteria.ResultsAfrican–Caribbean participants were 2 years younger, and those with dementia nearly 8 years younger than their White counterparts. The prevalence of dementia was significantly higher in the African–Caribbean (9.6%) than the White group (6.9%) after adjustment for the confounders age and socioeconomic status (odds ratio (OR) = 3.1, 95%CI 1.3–7.3, P = 0.012).ConclusionsThere is an increased prevalence of dementia in older people of African–Caribbean country of birth in the UK and at younger ages than in the indigenous White population. These findings have implications for service provision and preventive interventions. Further research is needed to explore the role of vascular risk factors and social adversity in the excess of dementia in this population.
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Krivonogov, Victor P. "African migrants in Cabo Verde". Asia and Africa Today, n. 7 (2021): 54. http://dx.doi.org/10.31857/s032150750015800-2.
Testo completoAbstract (sommario):
This article outlines the results of study among main migrant groups of Cabo Verde, nationals of Africa. Ethnographic expedition for studying contemporary ethnic processes worked on the archipelago in December 2019 - January 2020. A comprehensive research method was used, along with examination of written and statistical sources. Interviews with informants and experts and mass-survey of African migrants using representative sample was carried out.It turned out that before XX century there were no African migrants on the archipelago, and up to 98-99% of the population were Cabo Verdeans(creole) - descendants of African slaves that were brought on the islands up to the middle of XIX century. Modern migration from African countries started only in the beginning of XXI century, but migrants viewed Cabo Verde as a staging point for further resettling into Western Europe and Northern America. In 2010, total number of African settlers achieved 10 thousand people. In the mid-2010s, government passed new laws that heavily restricted migration and the stream of new people from Africa drastically declined. Now African immigrants make up less than 2% of the total population. This study allowed to find out the age and gender composition of immigrants, language processes, degree of adaptation to local culture, social and educational level of migrants, the degree of development of integration and assimilatory processes and other questions allowing to draw conclusion about the subsequent development of immigrant groups in the country.
Tesi sul tema "!kung (african people) – population"
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Koen, Liezl. "Chromosomal aberrations in the Xhosa shizophrenia population /". Link to the online version, 2008. http://hdl.handle.net/10019/1697.
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Ngbakpwa, Te Mobusa. "Histoire des Ngbandi du Haut-Ubangi (des origines à 1930)". Doctoral thesis, Universite Libre de Bruxelles, 1992. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212883.
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Legros, Hugues. "Chasseurs d'ivoire: histoire du royaume yeke (Shaba, Zaïre) des origines à 1891". Doctoral thesis, Universite Libre de Bruxelles, 1994. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212658.
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Koen, Liezl. "Chromosomal aberrations in the Xhosa schizophrenia population". Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/1189.
Testo completoAbstract (sommario):
Thesis (PhD (Psychiatry))--Stellenbosch University, 2008.BACKGROUND: Schizophrenia is a heterogeneous illness resulting from complex gene-environment interplay. The majority of molecular genetic work done has involved Caucasian populations, with studies in these and Asian populations showing 2-32% of sufferers to have chromosomal aberrations. So far the discovery of a specific susceptibility mechanism or gene still eludes us, but the use of endophenotypes is advocated as a useful tool in this search. No cytogenetic studies of this nature have been reported in any African schizophrenia population. AIM: The aim of the study was to combine genotypic and phenotypic data, collected in a homogenous population in a structured manner, with the hope of characterising an endophenotype that could be used for more accurate identification of individuals with possible chromosomal abnormalities. METHODOLOGY: A structured clinical interview was conducted on 112 Xhosa schizophrenia patients. (Diagnostic Interview for Genetic Studies, including Schedules for the Assessment of Negative and Positive Symptoms.) Blood samples (karyotyping and/or FISH analysis) as well as urine samples (drug screening) were obtained and nine head and facial measurements were performed. Descriptive statistics were compiled with reference to demographic, clinical and morphological variables. Comparisons between mean differences for these variables were made.
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Wright, Galen Egan Buckley. "Molecular genetic analysis of two genes, CYP2D6 and COMT, in the schizophrenia-susceptibility locus on chromosome 22q in the Xhosa population". Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20366.
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Nyirenda, Makandwe. "Ageing with HIV : an investigation of the health and well-being of older people in a rural South African population with a severe HIV epidemic". Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/366476/.
Testo completoAbstract (sommario):
This study aims to describe the living and informal care circumstances of older people in an area of rural South Africa severely affected by HIV, and examine how those circumstances may influence the physical health, emotional well-being and survival of older people. Using longitudinal surveillance and cross-sectional survey data this thesis is built around four separate but related papers. Specific study objectives were to: 1) investigate household living arrangements and informal care (financial, physical or emotional assistance) by or towards older people in rural South Africa; 2) describe the self-reported health and emotional well-being status of older people by HIV status; and 3) examine the association between self-reported health, emotional well-being and informal care and mortality in older people. Surveillance data for 2005-2010 showed living arrangements remained stable, with over 85% of older people aged 60 years and above living in multi-generational households; over this period employment rates in both older and young people declined, but government grants receipt increased. Being co-resident with own children, household structure and size were important determinants of whether financial support flowed downward (from older to younger) or upward (from young to older person); while peer support (from one older person to another) was rare. Adjusting for age, marital status, education, place of residency and household socio-economic status, exchanges of financial resources in the study population are most likely to be downward or at best reciprocal (bidirectional with young people). Of the cross-sectional study participants (n=422) aged 50+, over 60% were care-givers (provided help with activities of daily living) to at least one adult (18-49 years) or child (below 18 years); around 84% (n=356) of older people were care-receivers; of whom over 92% (n=329) were receiving assistance with fetching water. Spouse, adult child, and grandchildren were the main sources of physical or emotional care for care-recipients. As expected health deteriorated with advancing age and women were less likely to be in good health. Further, care-giving was associated with improved functional ability but decreased emotional well-being. HIV-infected older participants reported better functional ability, quality of life and overall health state than HIV-affected (had an HIV-infected or HIV-related death of adult child) study participants. These differentials in health and well-being were also evident in mortality patterns over three years of follow-up. Mortality was higher among non-care-givers than in care-givers, in older people with poor self-rated health and in participants who had experienced a major depressive episode. Findings suggest there is an intricate relationship between living arrangements, informal care and health, emotional well-being and survival of older people in severely HIV-affected settings. More crucially, with the considerable resources devoted to HIV Care and Treatment programmes, uninfected older persons may be highly vulnerable to poor health. A multifaceted intervention to improving older people’s health and well-being is urgently required.
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Wong, Andrea Jane. "Normative indicators for a black, Xhosa speaking population without tertiary education on four tests used to access malingering". Thesis, Rhodes University, 2009. http://hdl.handle.net/10962/d1002597.
Testo completoAbstract (sommario):
Malingering has become an increasing concern in neuropsychological assessment in recent years, and a wide range of tests have been designed and examined for the purpose of detecting malingering. Cut-off scores have been recommended for these tests in order to provide indications of malingering performances. However, the derived scores have been in respect of westernised populations of people with relatively high levels of education who speak English as their first language. Accordingly, the current study aimed to attain normative data and cut-off scores for four commonly employed neuropsychological tools, administered in English, on a population of black, South African, Xhosa-speaking people (N = 33), who attended a former DET-type school in the Eastern Cape, with a Grade 11-12 level of education, in the age range of 18 - 40 years. The targeted measures included the TOMM, the Rey-15 Item Memory Test, the Digit Span subtest of the WAIS-III, and the Trail Making Test. The obtained scores were poorer than the previously published cut-offs for at least one component of each of the tests investigated, except the TOMM. The fmdings of this study highlight the important role that the factors of culture, quality of education, and language play in neuropsychological test performance.
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Andrade, Claudia Caixeta Franco. "Estrutura Genética e Desequilíbrio de Ligação em Africanos, Ameríndios e Remanescentes de Quilombos Brasileiros Estimados por Novos STRs-X". Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/17/17135/tde-15052014-095526/.
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O cromossomo X possui características que o tornam um bom marcador em estudos de genética populacional. A formação da população brasileira é resultado de cinco séculos de mistura étnica entre populações de três diferentes populações: europeus, africanos e ameríndios. Sendo assim, a população brasileira atual é considerada tri-híbrida embora as proporções dos três grandes componentes étnicos variem consideravelmente conforme a região geográfica. O objetivo deste trabalho é obter informações sobre a estrutura genética de populações urbanas brasileiras, indígena, remanescentes de quilombos e uma amostra da população africana (Congo). Foram utilizados 20 STRs localizados em três regiões do cromossomo X: Xp21, Xp-q11.1, Xq28. O total de alelos obtidos foi 169. Todas as três regiões apresentaram alelos privados, totalizando 26. A população ameríndia, Tikúna, foi a que apresentou a menor diversidade genética. Além disso, quando comparada com as outras populações, Tikúna foi a que mais se diferenciou. Era esperado que Tikúna fosse a população mais divergente e com menor diversidade, pois esta é uma população pequena e isolada que sofre as consequências da ocorrência de deriva genética. Nas mulheres, as populações mais semelhantes foram Sítio Velho-Teresina, Sítio Velho-Ribeirão Preto e Ribeirão Preto-Teresina, pois tiveram valores de FST não significativos. Nos homens, apenas Mimbó-Sítio Velho são as populações mais semelhantes (FST não significativo). Mimbó e Sítio Velho são os dois remanescentes de quilombos utilizados neste estudo e o histórico de formação destas populações é semelhante, o que justifica a proximidade genética entre elas. Todas as populações foram agrupadas em três clusters, tanto no grupo dos homens quanto no das mulheres. O primeiro cluster é formado, em sua grande maioria, por indivíduos da população Africana, Mimbó e Sítio Velho, representando o componente africano na população brasileira. O segundo cluster foi formado por mais de 90% da população Tikúna, sendo assim indicativo do componente ameríndio. O terceiro cluster agrupou as populações urbanas, Ribeirão Preto e Tikúna, que possuem um maior componente europeu na sua formação. DL ocorreu entre os marcadores de todos os haploblocos (DMD, PC e HEMA). HEMA foi o haplobloco com maior DL. Semelhanças e diferenças entre as populações foram encontradas de acordo com o esperado pelo histórico de formação de cada uma delas. Os três componentes genéticos (africano, ameríndio e europeu) da população brasileira foram claramente identificados nas amostras analisadas.The X chromosome has characteristics that make it a good marker for studies of population genetics. Brazilian population results from five centuries of admixture of European, Africans and Amerindians. Thus, the current Brazilian population is considered trihybrid although the proportions of the three main ethnic components vary considerably according to the geographical region. The aim of this work was to obtain information about the genetic structure of Brazilian urban populations, Amerindians, quilombo remnants and a sample of African (Congo). We used 20 STRs located in three regions of the X chromosome: Xp21, Xpq11.1 andXq28. The total of alleles obtained was 169. All three chromosomal regions have private alleles, totaling 26. The Amerindian population (Tikúna) had lower genetic diversity and higher FST values, when compared to other populations. This is expected given the genetic isolation and small population size, which make them most sensitive to the effects of genetic drift. In women, by pairs of populations Sítio Velho-Teresina, Sítio Velho-Ribeirão Preto and Ribeirão Preto-Teresina, were similar (FST values not significantly different). In men, only the pair Mimbó-Sítio Velho rendered no significantly different the individuals analyzed were grouped into three clusters, even when considered separately for men and women. One cluster was termed \'African\' to be formed largely by individuals from Congo, quilombo remnants and Sítio Velho. Another cluster termed \'Amerind\' was formed by >90% of Tikúna population. In the third one, were grouped urban populations of Ribeirão Preto and Teresina. In this cluster are observed components African, Amerindian, and European with predominance of the latter. DL occurred between markers of all blocks (DMD, PC e HEMA). HEMA had the highest DL. There were differences between DL in men and women, which may have been caused by sampling problems. The observed similarities and differences between clusters and populations subsets match expectation from the population histories. The results presented bring new elements of analysis to the structure of the Brazilian population.
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Njagi, Nyambura Gachette. "The sustainable livelihood approach : a vulnerability context analysis of Ngwatle's! Kung group Basarwa, Botswana". Thesis, 2005. http://hdl.handle.net/10413/3556.
Testo completoAbstract (sommario):
This thesis uses aspects of the Sustainable Livelihoods Approach (SLA) to investigate how global trends and national eco-political factors in Botswana impact the livelihood strategies or actions of a group of individuals who identify as !Kung Group Basarwa in a small village called Ngwatle, located in the south western Kalahari. These global and national forces produce and reproduce institutions, structures and processes that constitute the particular vulnerability context in which Ngwatle is couched. The Sustainable Livelihoods Framework, a key component of SLAs, is used here as a tool of analysis to identify barriers and constraints to livelihood aspirations. Basarwa, known as Bushmen or San people more generally, have a history of strained relationships with more powerful majority groups including the Setswana (or Tswana) who account for 79% of the population as well as wealthy cattle owning minority groups. This history, understood in a wider global context, makes livelihood construction extremely difficult for people living in Ngwatle. The research is exploratory in nature and seeks to contextualize a problem or a set of problems given a particular set of circumstances rather than establish categorical causality between variables. The approach of this research has been methodologically investigated by answering three primary research questions. The first question seeks to establish the major activities undertaken in Ngwatle households that help people in the community to make a living. In this regard, the research clearly establishes that several specific livelihood actions, such as making crafts and conducting cash-generating entrepreneurial activities are performed on a daily basis in Ngwatle. The second research question asks whether resources (assets) are constrained by institutions, structures and processes and if so, how. In fact, resources are constrained by these factors and are informed by historical precedence. The third research question focuses on how institutions, structures and processes impact livelihood strategies in Ngwatle in more detail. Links are established between the macro (global), meso (national) and micro (community) economic and political environments. The suggestion is that aspects of capitalism and neo-liberalism at the global and State levels have informed and strengthened various mechanism of control designed to manipulate and direct the movement of individuals (bio-politics). In essence prejudices and discriminatory practices have served to radically alter Basarwa social systems and seriously undermine livelihood strategies.Thesis (M.Soc.Sc.)-University of KwaZulu-Natal, 2005.
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Mhlongo, Sithembile Promise. "Reasons for undergoing virginity testing : a study of young people in rural KwaZulu-Natal, South Africa". Thesis, 2009. http://hdl.handle.net/10413/910.
Testo completoAbstract (sommario):
Aim: The practice of virginity testing was done from the early twentieth century in KwaZulu-Natal. Many regard virginity testing as the only way to revitalize what they view as lost cultural values. The aim of the study is to understand the reasons for undergoing virginity testing from the perspective of adolescent girls and boys. The study will explore the importance attached to virginity testing by adolescent girls and boys.Thesis (M.A.)-University of KwaZulu-Natal, Durban, 2009.
Libri sul tema "!kung (african people) – population"
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B, Lee Richard, a cura di. The Dobe Ju/'hoansi. 2a ed. Fort Worth: Harcourt Brace College Publishers, 1993.
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Uhl, Wolfgang. Kalahari-hauntnah: Die welt der!Kung-Buschma nner. Reutlingen [Germany]: Oertel & Spo rer, 1994.
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Kaaij, Peter van der (P. A. A. M.), a cura di. Nisa: Het leven van een!Kungvrouw. Amsterdam: Muntinga, 2003.
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translator, Yang Zhi, Li Juan e Liu Wenyao, a cura di. Nisa: Yi ming Kun zu nü zi de sheng huo y u xin sheng. Beijing: Zhongguo ren min da xue chu ban she, 2017.
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Lorna, Marshall, e Biesele Megan, a cura di. The Past and future of !Kung ethnography: Critical reflections and symbolic perspectives : essays in honour of Lorna Marshall. Hamburg: Helmut Buske Verlag, 1986.
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Nisa, a cura di. Nisa, the life and words of a !Kung woman. London: Earthscan Publications, 1990.
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Speeter, Sonja. Die Expeditionen der Familie Marshall: Eine Untersuchung zur ethnologischen Erforschung der Nyae Nyae !Kung. Münster [Germany]: Lit, 2004.
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Aging, Minnesota Board on, Aging Initiative: Project 2030 e Minnesota. Dept. of Human Services., a cura di. Population profiles: African American elders, American Indian elders, Asian American elders, Hispanic elders. St. Paul, MN: Aging Initiative--Project 2030, Minnesota Dept. of Human Services, 1998.
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Richard, Katz. Healing makes our hearts happy: Spirituality & cultural transformation among the Kalahari Ju/'hoansi. Rochester, Vt: Inner Traditions, 1997.
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Thomas, Elizabeth Marshall. The harmless people. 2a ed. New York: Vintage Books, 1989.
Cerca il testo completoCapitoli di libri sul tema "!kung (african people) – population"
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Cordell, Dennis D. "Extracting People from Precapitalist Production". In African Population and Capitalism, 137–52. New York: Routledge, 2021. http://dx.doi.org/10.4324/9780429043864-12.
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Gould, W. T. S., e R. M. Prothero. "Space and time in African population mobility". In People on the Move, 39–50. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003459538-5.
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Campinha-Bacote, Josepha, e Rebecca C. Lee. "People of African American Heritage". In Textbook for Transcultural Health Care: A Population Approach, 103–50. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-51399-3_5.
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Agyepong, Gottfried Tenkorang, Edwin A. Gyasi, John S. Nabila e Sosthenes K. Kufogbe. "Population, Land-Use and the Environment in a West African Savanna Ecosystem: An Approach to Sustainable Land-Use on Community Lands in Northern Ghana". In People and their Planet, 251–71. London: Palgrave Macmillan UK, 1999. http://dx.doi.org/10.1007/978-1-349-27182-5_16.
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Riley, Liam, e Jonathan Crush. "Introduction: African Secondary City Food Systems in Context". In Transforming Urban Food Systems in Secondary Cities in Africa, 1–21. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-93072-1_1.
Testo completoAbstract (sommario):
AbstractCountries across Africa are rapidly transitioning from rural to urban societies. The UN projects that 60% of people living in Africa will be in urban areas by 2050, with the urban population on the continent tripling over the next 50 years. The challenge of building inclusive and sustainable cities in the context of rapid urbanization is arguably the critical development issue of the twenty-first century and creating food secure cities is key to promoting health, prosperity, equity, and ecological sustainability. The expansion of Africa’s urban population is taking place largely in secondary cities. These are broadly defined as cities with fewer than half a million people that are not national political or economic centres. The implications of secondary urbanization have recently been described by the Cities Alliance as “a real knowledge gap,” requiring much additional research not least because it poses new intellectual challenges for academic researchers and governance challenges for policymakers. International researchers coming from multiple points of view, including food studies, urban studies, and sustainability studies, are starting to heed the call for further research into the implications for food security of rapidly growing secondary cities in Africa.
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Ekanem, Jemimah Timothy, e Idongesit Michael Umoh. "Social Vulnerability of Rural Dwellers to Climate Variability: Akwa Ibom State, Nigeria". In African Handbook of Climate Change Adaptation, 2269–91. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_232.
Testo completoAbstract (sommario):
AbstractFor their livelihood activities, rural farming communities depend more on extractive capital. Their capacity to cultivate sufficiently for their family maintenance is greatly impeded by the absence of either temperature or rainfall quantity pattern or uniformity. The divergent effects of recent extreme weather events around the world, including within relatively small geographical areas, exemplify the unequal impacts of climate change on populations. Akwa Ibom State has been found vulnerable to extreme weather events, such as flooding, severe storms, and rising sea levels, leading to homelessness, poverty, conflicts, and war for millions of people. All of these have resulted in social disturbances and dislocations among rural populations, especially in coastal communities, making them more vulnerable to climate variability. In the field of social vulnerability in the state, not much has been achieved. This chapter analyzes the vulnerability of the rural population to climate variability; the socio-economic characteristics of the rural population; the index of social vulnerability of rural dwellers to climate variability; social vulnerability factors; and the rural population’s social vulnerability mitigation initiatives in Akwa Ibom State, Nigeria. Social science approaches to human vulnerability draw critical attention to the root causes and factors why people are forced to respond to risks from climate change. A complex social approach to vulnerability is most likely to enhance mitigation and adaptation preparation efforts, given that vulnerability is a multidimensional mechanism rather than an invariable state.
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Ekanem, Jemimah Timothy, e Idongesit Michael Umoh. "Social Vulnerability of Rural Dwellers to Climate Variability: Akwa Ibom State, Nigeria". In African Handbook of Climate Change Adaptation, 1–23. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-42091-8_232-1.
Testo completoAbstract (sommario):
AbstractFor their livelihood activities, rural farming communities depend more on extractive capital. Their capacity to cultivate sufficiently for their family maintenance is greatly impeded by the absence of either temperature or rainfall quantity pattern or uniformity. The divergent effects of recent extreme weather events around the world, including within relatively small geographical areas, exemplify the unequal impacts of climate change on populations. Akwa Ibom State has been found vulnerable to extreme weather events, such as flooding, severe storms, and rising sea levels, leading to homelessness, poverty, conflicts, and war for millions of people. All of these have resulted in social disturbances and dislocations among rural populations, especially in coastal communities, making them more vulnerable to climate variability. In the field of social vulnerability in the state, not much has been achieved. This chapter analyzes the vulnerability of the rural population to climate variability; the socio-economic characteristics of the rural population; the index of social vulnerability of rural dwellers to climate variability; social vulnerability factors; and the rural population’s social vulnerability mitigation initiatives in Akwa Ibom State, Nigeria. Social science approaches to human vulnerability draw critical attention to the root causes and factors why people are forced to respond to risks from climate change. A complex social approach to vulnerability is most likely to enhance mitigation and adaptation preparation efforts, given that vulnerability is a multidimensional mechanism rather than an invariable state.
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Wagino, Abbebe Marra, e Teshale W. Amanuel. "Community Adaptation to Climate Change: Case of Gumuz People, Metekel Zone, Northwest Ethiopia". In African Handbook of Climate Change Adaptation, 2339–62. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_244.
Testo completoAbstract (sommario):
AbstractThe effect of climate change on agricultural-dependent communities is immense. Ethiopia in which more than 85% of its population is agrarian is affected by climate change. Communities in different parts of the country perceived climate change and practice different climate change adaptation strategies. This chapter was initiated to identify adaptation strategy to the impact of changing climate. Data on a total of 180 households were gathered using structured and semi-structured questioners. Focus group discussion and key informant interview were also used for data collection. Climatic data from the nearest meteorological stations of the area were collected and used in this chapter. The collected data were analyzed using descriptive and inferential statistical methods. The upshot indicated that all the respondent communities experienced at least one of autonomous/self-adaptation strategies to cope and live with the impacts of changing climate. Though 33.6% complained on its accessibility and pricing, 66.4% of the respondents reviled as they do not have any awareness on improved agricultural technologies. The major adaptation strategies identified were collecting and using of edible wild plants and other forest products, hunting, renting/selling of own farm lands, livestock sell, selling of household materials/assets, collecting and selling of wood and wood products and depending on well-off relatives, using drought-resistant crop variety, changing cropping calendar, replanting/sowing, and increasing farmland size. Nevertheless, the communities are not yet fully aware and accessed to policy-driven options for climate change adaptation. Although they used different autonomous adaptation mechanisms, the households are not resilient to the current and perceived climate change. Finally, based on the findings, the recommendation is that besides encouraging the existing community-based adaptation strategies planned adaptation strategies have to be implemented: such as early-warning and preparedness programs have to be effectively implemented in the area, introduction of different drought-resistant locally adapted food crop varieties, and expansion of large-scale investment in the area has to be checked, and give due recognition to forest ecosystem–based adaptation mechanisms of the local community in the area.
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Popoola, Kehinde Olayinka, Anne Jerneck e Sunday Adesola Ajayi. "Climate Variability and Rural Livelihood Security: Impacts and Implications". In African Handbook of Climate Change Adaptation, 423–36. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_200.
Testo completoAbstract (sommario):
AbstractIn a typical Nigerian village, the majority of the population comprises old people who are mostly economically unproductive due to reduced or loss of physical strength brought about by ageing and ill health. Many of these rural old people still work, and do so outside the formal sector, and are particularly susceptible to the effects of climate variability and change. Few studies have reported on climate change and the rural aged and there is a research gap as regards rural elderly peoples’ perception of climate variability impact on them. Since little is known about their perception of climate variability impacts and implications on the rural aged especially in relation to their livelihood activities in Sub-Saharan Africa, this chapter therefore examined the impact of climate variability on the livelihood security of the rural aged in different ecological zones of Nigeria.Both qualitative and quantitative methods were used for data collection. Qualitative data were obtained through interviews with four aged and four aged women selected purposively in each rural community and analyzed using Content Analysis Method. Quantitative data were obtained through structured questionnaire administered to an aged male and an aged female population available in selected houses (the aged are people 60 years and over in age) in selected rural communities in selected ecological zones of Nigeria. Where there was no combination of the two (aged men and aged women), either of the two was also sufficient.It was discovered that the ageds’ experiences of climate variability impact relate to the prevailing climate variability characteristic of each ecological zones. The impact on their livelihood in these zones is seen in terms of livestock death, lack of pastures for herds, scarcity of water, pest invasion, delayed planting crop failure, need for irrigation, water logging, drowning of small animals, human and animal illness. This means that planning decisions related to climate change issues should take cognizance of the views of the aged populations especially of those residing in rural areas as they are the most affected by the impact.
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Okafor, Joachim Chukwuma. "Flood, Livelihood Displacement, and Poverty in Nigeria: Plights of Flood Victims, 2012–2018". In African Handbook of Climate Change Adaptation, 2535–45. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_124.
Testo completoAbstract (sommario):
AbstractThe impacts of flood on the Nigerian population over the years have been enormous. This is because the attendant associated risks such as destruction of lives and properties, livelihood displacement, and impoverishment of victims arising from increasing flood cases have constituted a threat to the citizens’ survival and therefore inform the attention the menace has drawn among scholars, policy analyst. This chapter has as its primary aim, a critical assessment of the impacts of government responses over the plight of victims of flooding in Nigeria over the years under review. Thus, special attention is given in this chapter to the various barriers or challenges facing government response to the plight of flood victims in Nigeria. Finally, some valuable steps, which if taken will reduce these barriers or challenges, are outlined. Though, the study adopted the use of secondary sources of data collection via content analysis, the experiences and knowledge gathered in this chapter will be strategically useful to people and organizations interested in the government of Nigeria’s response to the plight of flood victims, barriers inhibiting the success of fund utilization in reducing the suffering and impoverishment of the flood victims, number of deaths, and population displaced as a result.
Atti di convegni sul tema "!kung (african people) – population"
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Bardarov, Georgi. "WATER CONFLICTS LINKED TO CLIMATE CHANGE AND POPULATION EXPLOSION". In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023v/4.2/s19.48.
Testo completoAbstract (sommario):
The second half of the twentieth and the beginning of the twenty-first century are marked by two processes that pose a serious threat to the sustainable development of the world in the near future. These are the population explosion in certain parts of the world and climate change. At the beginning of the second millennium the world population was only 300 million, today it exceeds 8 billion and by the middle of this century it will reach 10 billion. At the same time, throughout human history, people have lived and worked in an identical way, now for the first time we have industry, transport, industrial animal husbandry that seriously pollute the natural environment, the consequences of it are unpredictable and they are bound to affect people. And this is already occurring, with increasingly acute drinking water shortages catalysing existing ethno-religious conflicts and generating new ones. The ones we have analyzed in this paper are along the Nile and in the Middle East along the Tigris, Euphrates and Jordan rivers. Already more than half of African countries are in water stress, and nearly a third in water disaster, including one, Uganda, which according to UN projections is expected to have a population growth between 2000 and 2050 of 302%! And when we talk about climate change and water conflicts, we need to act immediately so that tomorrow is not too late!
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Aemro, Yohannes Biru, Pedro Moura e Anibal T. de Almeida. "DC-Microgrids As a Means of Rural Development in East African Countries". In ASME 2018 Power Conference collocated with the ASME 2018 12th International Conference on Energy Sustainability and the ASME 2018 Nuclear Forum. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/power2018-7405.
Testo completoAbstract (sommario):
According to the World Health Organization, nearly 3 billion people burn wood, crop wastes, charcoal, coal and animal dung to meet their day to day energy needs and among these nearly 1.3 billion people do not have electricity access. More than 80% of the population suffering from energy poverty are living in rural areas of developing countries, such as in East Africa. On the other hand, the potential of renewable energy resources in East African countries is huge. However, such resources are usually intermittent and therefore the use of renewable energy sources to provide modern energy access with a good reliability level, for the remote locations with lack of energy access, is still an issue. With this regard, one of the emerging technologies to solve accessibility of energy in rural and remote areas is DC-microgrids. This paper assessed the use of off-grid systems in different developing countries and presents the results in improving energy access, especially in rural and remote locations. The results indicate that the experience of some Asian countries and Tanzania in East Africa could be a good example for other East African countries to invest in off-grid systems and address energy access problems in their rural and remote locations. On the other hand, there are challenges related to financing and lack of trained man power in East African countries.
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Paulo, Avner, Carlos Eduardo Oliveira De Souza, Bruna Guimarães Lima e Silva, Flávio Luiz Schiavoni e Adilson Siqueira. "Black Lives Matter". In Simpósio Brasileiro de Computação Musical. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/sbcm.2019.10459.
Testo completoAbstract (sommario):
The Brazilian police killed 16 people per day in 2017 and 3/4 of the victims were black people. Recently, a Brazilian called Evaldo Rosa dos Santos, father, worker, musician, and black, was killed in Rio de Janeiro with 80 rifle bullets shot by the police. Everyday, the statistics and the news show that the police uses more force when dealing with black people and it seems obvious that, in Brazil, the state bullet uses to find a black skin to rest. Unfortunately, the brutal force and violence by the state and the police to black people is not a problem only in this country. It is a global reality that led to the creation of an international movement called Black Lives Matter (BLM), a movement against all types of racism towards the black people specially by the police and the state. The BLM movement also aims to connect black people of the entire world against the violence and for justice. In our work, we try to establish a link between the reality of black people in Brazil with the culture of black people around the world, connecting people and artists to perform a tribute to the black lives harved by the state force. For this, the piece uses web content, news, pictures, YouTube’s videos, and more, to create a collage of visual and musical environment merged with expressive movements of a dance, combining technology and gestures. Black culture beyond violence because we believe that black lives matter. such as the Ku Klux Klan, which bring the black population of the world into concern for possible setbacks in their rights. In Brazil, it is not different. Brazil is the non African country with the biggest afro descendant population in the world and one of the last country in the world to abolish slavery. Nowadays, a black person is 3 times more propense to be killed and most part of the murders in the country happened to afro Brazilians. Marielle Franco, a black city councillor from Rio, the only black female representative and one of seven women on the 51-seat council was killed in 2018. The killers were two former policeman. According to Human Rights Watch, the police force in the state of Rio de Janeiro, Brazil, killed more than 8,000 people between 2005 and 2015, 3/4 of them were black men. At the same time, the African culture strongly influenced the Brazilian culture and most part of the traditional Brazilian music and rhythms can be considered black music.
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Megbowon, Soji, Esther Ajayi, Adewale Oseni, Iheanacho Metuonu, Amos Fatokun e Tobiloba Emmanuel. "Promoting the Culture of Innovation and Entrepreneurship within the University Ecosystem through a University-Based Co-Creation Hub". In Tenth Pan-Commonwealth Forum on Open Learning. Commonwealth of Learning, 2022. http://dx.doi.org/10.56059/pcf10.5376.
Testo completoAbstract (sommario):
Innovation and entrepreneurship are considered one of the most powerful driving forces for economic and social progress in our era. As a result, building a unique entrepreneurial ecosystem and transforming it into an “innovative and Entrepreneurial University” have become goals for many colleges and universities. // Innovation and Entrepreneurship are very important in Universities because they play an important role to increase entrepreneurial graduates of higher education. Global awareness of the importance of the role of entrepreneurship and innovation in the university ecosystem is in line with the growing awareness of higher education institutions, and universities, to walk the entrepreneurial path. This study aims to form an entrepreneurial university model using a systems approach, where the university should not carry its own burden in carrying out the responsibilities of a third mission to help accelerate community development. Going by the society we have found ourselves, we observed that there is a huge gap between the school curriculum and the marketplace demand. Most graduates in the marketplace are deficient in relevant knowledge, skills, and attitudes needed to solve critical problems in the workplace. // The rate and rapidity at which the African youth population has been growing are enormous and this has also been very challenging. On one side, it is enormous because if well harnessed, it could become a potential for improved African economy, production, and growth. To this end, youths could be considered Africa’s greatest asset. On the other hand, it is challenging as the resultant restiveness constitutes a threat in our universities, and unemployment fosters banditry and militancy. // In all advanced economies, Higher Education Institutions (HEI) are expected to play a vital role in encouraging innovation, entrepreneurship, and structural change. The expanding population shares the economic importance of knowledge-intensive active ties, digital transformation sweeping across all organizational borders of the globe, and the need to quickly forge efficient and innovative solutions to address pressing societal challenges, that is the demand to contribute more to innovation and to economic and societal change. // The world economic forum estimates that 15 to 20 million young people will join the African workforce every year for the next two decades. By 2030, Africa will be home to more than a quarter of the world’s population under 25, who will make up 60% of the continent’s total population. By then, 15% of the world’s working-age population will be in Africa. /
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Kelechi, F. M., I. S. Ogbodo, J. A. Adah, A. A. Aribisala e P. I. Akagbosu. "Achieving Sustainable Energy Transition; - What Works in Sub-Saharan Africa". In SPE Nigeria Annual International Conference and Exhibition. SPE, 2023. http://dx.doi.org/10.2118/217226-ms.
Testo completoAbstract (sommario):
Abstract According to a United Nations report from November, 2022, the world population reached 8 billion for the first time in human history with 6.74 billion people living in low and middle - income countries (LMICs) and 1.3 billion living in developed countries. 53 of Africa's 54 countries fall under the former category. The population of Africa is estimated to be 1.4 billion with 1.17 billion in sub-Saharan Africa. Presently, 770 million people globally have no access to electricity mostly in Africa and Asia with 3.8 billion depending on solid fuels for cooking and other domestic uses. Data obtained from WHO reported that 568 million people in sub-Saharan Africa are living without access to electricity and clean energy. In developing nations, wood, charcoal, and dung are commonly used as traditional cooking fuels, with wood being the primary source of energy. The emission from these fuels in addition to those from fossil fuels further reduces the quality of air which causes ambient air pollution, a condition with adverse effects on human health. However, there are initiatives that have been adopted to alleviate the problems including the future expectation for global access to clean energy as conveyed in the 2030 United Nations Sustainable Development Goals (goal number 7); the 2063 African Union Commission Agenda; the Paris Agreement at COP21; and the United Nations Sustainable Energy for All (SE4A). This paper reviews historical trends in energy usage in sub-Saharan Africa, the present conditions and status of development, across policy and technological prongs, in terms of the current energy transition. Furthermore, the paper seeks to highlight opportunities for future sustainable energy development across all sectors and businesses in order to provide energy to the 568 million without access in sub-Saharan Africa, while bearing in mind the environmental implications for the global population at large.
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Youssouf Kadafi, Said, Hui Lyu, Tebello Pusetso e Zhang Xusheng. "Design Application of Solar Backpack for African Rural Area Students". In AHFE 2023 Hawaii Edition. AHFE International, 2023. http://dx.doi.org/10.54941/ahfe1004246.
Testo completoAbstract (sommario):
Access to electricity is a significant challenge in Africa, the impact of which is even greater in schools in isolated rural areas. According to the World Bank, approximately 600 million people (nearly two-thirds of the population) in Sub-Saharan Africa lack access to electricity, leading to difficulties in people’s livelihood, including limited educational opportunities. It has been observed that students living in rural areas take long-distance walks (1h to 2hrs) to school early in the morning and return home after dark with no street lights. Moreover, many students study at night without access of light and electricity. Therefore, this study aims to explore the potential applications and benefits of solar-powered backpacks for African students living in rural areas. The study was conducted in Comoros, at the Mohammadia Community School in the village of Irohe Oichili and the village of Chomoni Oichili where students walk more than 6.5km to get to school. Three hundred and one students were interviewed. The questionnaire was employed to capture necessary data for the solar-powered backpack design and a vivid picture of the importance of this design in Comorian rural communities for students. The parameters within the questionnaire includes families’ financial status, whether electrical power shortage affects the students’ educational performance, whether the solar-powered backpack will benefit the students and so on. The results of the survey showed that 82% of the students came from families with low financial status. 80% of the students reported that electrical power shortage affects their educational performance. 90% of the students reported that they would benefit from using a solar-powered backpack. Therefore, a solar-powered backpack was designed with a solar panel attached to the front of the backpack, and a LED light was attached directly inside the backpack. For the charging facility, the backpack is occupied by a USB port, located on the bag’s exterior, connected to the charge center and the battery, while the battery inside the pack is stored neatly away. The battery provides power to the port through an extension system connected inside the backpack. The prototype was tested, and we found that the average time spent on the school way to charge is 1h48min. The capacity of the battery charged on the way is 36%. The period of usage for studying is 1h30min, and the battery life after usage is 16%. As a result, a solar-powered backpack could provide a convenient, portable and sustainable source of electricity for student living in remote areas who are unable to access the electrical grid. Future work is to update the prototype with an attached solar panel that can be disconnected for better charging when the student enters the classroom or at home.
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Cap, Constant. "The Importance of Participation and Inclusion in African Urbanization. A focused look at Transport and Housing Projects". In 55th ISOCARP World Planning Congress, Beyond Metropolis, Jakarta-Bogor, Indonesia. ISOCARP, 2019. http://dx.doi.org/10.47472/dmcz6151.
Testo completoAbstract (sommario):
According to the World Bank (2015) Africa’s urbanization rate has surpassed other parts of the world. It is believed that by 2030, over 50% of Africans will reside in Urban Centres. Kenya is among the African counties that has experienced a tremendous increase in her urban population. This is most visible in the capital, the primate city of Nairobi. The growth has led to increased pressure on basic needs like housing, transport, water, education and security. Coupled with unequal economic development and social benefits, the result has been the tremendous expansion of informal sectors across fields. To respond to some of this pressure, the central government has vowed initiate large projects in housing, transport, water and others (Republic of Kenya, 2018). Newly enacted legislation also provides for the establishment of multi-sectoral urban boards to oversee the delivery of some services. Among the major projects coming up include Affordable Housing schemes and Mass Rapid Transport investments such as Bus Rapid Transit and expanded commuter rail systems. However, experience from the past both in Nairobi and other Cities has taught us the importance of inclusion, empathy and participation in such projects. Recent times have shown that public projects tend to ignore these and other key elements leading to massive failure of investment. The paper investigates case studies from similar projects in other parts of Africa, Bus Rapid Transit Projects in Lagos, Dar es Salaam and South African Cities; past Slum Upgrading and Housing Projects in Nairobi and other parts of the continent. The research methods also involve data collection on inclusion and participation from those who are affected directly by these proposed projects as well as the impacts that previous projects have had. The results from the study show that without proper communication and participation there are several misunderstandings on liveable spaces in cities. These include misinterpretations of the challenge’s citizens face, on the intentions of proposed solutions as well as the socioeconomic decision-making process of citizens. The implication of this leaves an unhealthy competition between existing informal ‘structures’ in various sectors against the new government driven proposals. The results are that those meant to benefit end up not being the primary beneficiaries. In conclusion, the role of putting people primarily as the centre objective of planning remains critical and key. For African planners, diverting from this will increase the existing inequalities and lead to further social divisions.
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Maranga, Ignatius, Grace Burleson, Roger Christen e Izael Da Silva. "Design and Testing of a Solar-Powered Bicycle in Nairobi, Kenya". In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-98015.
Testo completoAbstract (sommario):
Abstract Globally, access to reliable and clean transportation vehicles is a growing concern. Using off-the-shelf components, researchers in Kenya have developed a solar-powered bicycle called the “Solar-E-Bike.” The bike has the potential to support the demand for mobility and electric power of the growing African population. A fully solar powered vehicle/generator for commuting and light cargo transportation as a source of electricity in the home is technically feasible and would respond to real user needs, impact the lives of many of people living in off-grid communities in Africa. Incorporating renewably-powered transportation methods could be a significant contribution to avoiding CO2 emissions in the future. The prototypes for this product have proven that a solar vehicle could easily be a practical transportation device with a daily range of 50 km per day. However, a test drive across 500 km showcased valuable design changes, such as improved component selection and durable frame design, that are needed for this product to be usable on a commercialized scale. Vehicles such as the one discussed in this paper could provide additional benefits such as power generation and provide infrastructure support for health, education, water and communications.
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El-Sherif, Doaa M. "Achieving Sustainable Urban Energy Planning: With Specific Focus on Transportation". In ASME 2015 9th International Conference on Energy Sustainability collocated with the ASME 2015 Power Conference, the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2015 Nuclear Forum. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/es2015-49628.
Testo completoAbstract (sommario):
The global population is expected to reach over 9 billion by 2050. The ‘second wave of urbanization’ indicates that developing world cities are growing much faster than their developed world counterparts, and most of these people will live in African and Asian cities where city growth rates are the highest. This, ‘second wave of urbanization’ is a core driver of change in the 21st century and follows the first wave of urbanization that took place in developed countries from 1750, lasted 200 years and resulted in the urbanization of 400 million people. By contrast, the second wave of urbanization is projected to see over 3 billion additional people living in cities in a time-span of just 80 years, bringing unprecedented challenges to city doorsteps. In the current era of development, urban sustainability is threatened by heightened global uncertainty and change. In broad terms, these changes consist of the following global factors: economic change, scarcity of resources, rapid technological and social change, environmental and climate change effects. These drivers of change have broad reach, and threaten multiple sectors — such as food, water, energy, transport and waste — that are critical for urban sustainability. In response, this paper discusses cities’ transition to urban energy sustainability and the role of infrastructures, with focus on transportation planning. The paper highlights the case of Egypt as an example of developing countries. The objectives of the paper are; firstly to identify the different factors affecting Egyptian cities’ transition to sustainability, and secondly to analyze the strategic urban planning process in Egypt which is a bottom-up participatory approach leading to urban sustainability. The paper presents a case study from Egypt, illustrating the preparation of a future urban strategic plan for a small Egyptian city. The case study shows how participatory approach can result in innovative solutions leading to sustainable urban energy planning with focus on transportation.
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Atcero, Milburga. "Covid-19 Disruption of Inclusive Lifelong Learning through Digital Technologies in Ugandan Higher Education: Policies and Practices for University Vulnerable Groups". In Tenth Pan-Commonwealth Forum on Open Learning. Commonwealth of Learning, 2022. http://dx.doi.org/10.56059/pcf10.6456.
Testo completoAbstract (sommario):
The Covid-19 crisis has forced most governments around the world to close educational institutions in an attempt to contain the spread of the pandemic, impacting over 91% of the world’s student population according to UNESCO. Uganda is among the countries where schools have been closed for at least 2 years. Uganda subscribes to the UN’s 2030 sustainable development goal (SDG) 4 which is grounded on notions of equity and fairness. The SDG 4 agenda: ‘Ensures inclusive and equitable quality education and promotes lifelong learning opportunities for all’. Similarly, Uganda’s Education Sector Strategic Plan 2018-2020 stipulates delivery of equitable, relevant and quality education for all. Notably in Uganda, with 42 million people (UBOS 2020) in lock down and mostly confined in their homes, digital technologies are becoming a necessity, as they become one of the main ways to access education, but also one remaining vectors for social interactions to take place. For instance, the 2019 communication sector report by the Uganda Communications Commission shows that the country’s internet penetration stands at 37.9% with over 23 million internet users, who mostly use mobile phones. According to the same report, mobile internet subscription stood at between 14.3 to 15.2 million persons out of the 42 million Ugandans. Meanwhile about 1.1 million to 1.4 million Ugandans have actively subscribed to pay-tv services. This clearly shows the digital gap as of 2020, given that a large proportion of the population (estimated at 62-96%) does not have access to the internet or pay-tv. The present article aims to demonstrate that in the current Covid-19 crisis, much as digital technologies are helping to reach wider audiences globally, Uganda, like other Sub-Saharan African countries, still faces several challenges which directly or indirectly affect lifelong learning. Our hypothesis is that some of the most vulnerable students from Universities living in rural communities, people living with disability are the most difficult to reach if ICTS serve as the main instrument for promoting lifelong learning. A survey of a convenient sample of 350 Ugandan students from various socioeconomic backgrounds was conducted. Preliminary results show that despite the fact that digital technologies have enabled the closing of the gap of continued access to lifelong learning during the Covid-19 pandemic in Uganda, there are still existing challenges in implementing Inclusive lifelong learning such as mobile phones, unstable electricity, poor infrastructure and accessing the lowest technology in order to close the educational gap.
Rapporti di organizzazioni sul tema "!kung (african people) – population"
1
Roldan de Jong, Tamara. Rapid Review: Perceptions of COVID-19 Vaccines in South Africa. SSHAP, aprile 2022. http://dx.doi.org/10.19088/sshap.2021.021.
Testo completoAbstract (sommario):
As of April 19, 2021, South Africa has recorded 1.56 million COVID-19 cases and almost 54,000 deaths - more than any other country on the African continent. The country has begun the national rollout of the Johnson & Johnson (J&J) COVID-19 vaccine, with over 292 thousand doses administered it aims to achieve herd immunity by vaccinating at least 67 percent of its population (around 40 million people) by the end of 2021. The government suspended its initial rollout of the AstraZeneca (AZ) vaccine due to concerns over its effectiveness, particularly against the new B.1.351 variant, which accounts for 90% of the infections in South Africa. The J&J vaccine was put on temporary hold in April due to concerns about rare clotting disorders. Although data show that expected acceptance of COVID-19 vaccines is relatively high, the suspension of two vaccines in South Africa, where fear of infection is decreasing, will likely influence public reactions. Understanding how individuals and population groups perceive and make sense of COVID-19 vaccines is critical to inform the design and implementation of risk communication and community engagement (RCCE) strategies, and guide interventions aiming to promote and sustain acceptance of COVID-19 vaccines, while encouraging compliance with other COVID-19 preventive measures. This review syntheses community perceptions of COVID-19 vaccines in South Africa to inform RCCE strategies and policies and provides examples of successful practice. It draws on multiple secondary data sources: scientific literature, qualitative and quantitative studies, grey literature, and mainstream and social media. The review was supported by consultation with four local expert key informants from different fields. It is part of the Social Science in Humanitarian Action Platform (SSHAP) series on social science considerations relating to COVID-19 vaccines. It was written for SSHAP by Tamara Roldan de Jong and Anthrologica on request of the UNICEF South Africa Country Office. Contributions were made from the RCCE Collective Service East and Southern Africa (ESAR) Region. The brief is the responsibility of SSHAP.
2
Facts about adolescents from the Demographic and Health Survey—Statistical tables for program planning: Central African Republic 1994–1995. Population Council, 2001. http://dx.doi.org/10.31899/pgy21.1008.
Testo completoAbstract (sommario):
The Population Council initiated its work on adolescents in the mid-1990s. At that time, those advocating greater attention to adolescent issues were concerned about adolescent fertility—particularly outside of marriage—and adolescent “risk-taking” behavior. As an international scientific organization with its mandate centered around the needs of developing countries, the Council sought a more nuanced and context-specific understanding of the problems confronting adolescents in the developing world. In working with colleagues inside and outside the Council, it became clear that information on adolescents, and the way data are organized, were limiting the ability to understand the diversity of their experiences or to develop programs to address that diversity. In the absence of data, many adolescent policies were implicitly based on the premise that the lives of adolescents in developing countries were like those of adolescents in Western countries. In fact, significant numbers of young people in the West do not fit this description, and even larger groups within the developing countries. The Council created tables to more clearly describe the diversity of the adolescent experience by drawing on Central African Republic Demographic and Health Survey data. The tables, presented in this report, are intended to be used as a basis for developing programs.
3
Bénin: Target men to increase use of health services. Population Council, 2001. http://dx.doi.org/10.31899/rh2001.1001.
Testo completoAbstract (sommario):
After initiating health sector reforms in 1994, the Bénin government established the Integrated Family Health Project, known as PROSAF. Funded by the U.S. Agency for International Development, PROSAF operates in the Borgou region, which is mostly rural and has the country’s most severe health problems. PROSAF managers wanted to understand why local people were not using health services, despite their poor health. As noted in this brief, managers requested that the African Population and Health Research Centre (APHRC) study the way households and communities make decisions on health care. In a study conducted in 2000 with support from the Population Council, APHRC identified sociocultural factors that might impede access to health care in the region and recommended approaches to overcome these obstacles. Study findings included that adult men make unilateral decisions in household resource allocation and health care; people prefer alternative health care, mainly traditional healers or self-medication, because of their low cost; use of modern medicine tends to occur as a last resort, and only when symptoms are advanced; communication about FP is limited, both between husbands and wives and between parents and children.
4
Child marriage briefing: Zambia. Population Council, 2005. http://dx.doi.org/10.31899/pgy19.1005.
Testo completoAbstract (sommario):
This brief provides an overview of child marriage as well as the particulars of child marriage in Zambia. This landlocked southern African nation is home to 10.9 million people, with 47 percent of its population under age 15. Zambia is one of the poorest countries in the world; nearly two out of three Zambians live on less than US$1 a day. The country’s economic growth was hindered by declining copper prices and a prolonged drought in the 1980s and 1990s. More recently, the AIDS epidemic has taken a devastating toll: 920,000 adults and children are living with HIV/AIDS, and 630,000 children have been orphaned because of the disease. Child marriage is widespread in Zambia, even though the legal age of marriage is 21 for both males and females. Customary law and practice discriminate against girls and women with respect to inheritance, property, and divorce rights. Domestic violence is a serious problem, with over half of married girls reporting ever experiencing physical violence and more than a third reporting abuse in the past year. Included in this brief are recommendations to promote later, chosen, and legal marriage.
5
Community-based AIDS prevention and care in Africa—Dissemination of Phase I findings: Report of five national workshops. Population Council, 1995. http://dx.doi.org/10.31899/hiv1995.1000.
Testo completoAbstract (sommario):
Given the constraints faced by the health care infrastructure in responding to the AIDS crisis in sub-Saharan Africa, and the limitations of traditional educational approaches in motivating people to modify their sexual behavior within the African context, community-based efforts at AIDS prevention, and care of those affected, are the first lines of defense against the disease. Thus, they deserve greater scrutiny, to learn from the experiences and to continue and expand their efforts. The “Community-Based AIDS Prevention and Care in Africa: Building on Local Initiatives” project is being carried out by the Population Council with support from Glaxo Wellcome. The project, which integrates HIV/AIDS prevention and care activities at the community level, focuses on five countries in East and Southern Africa (Kenya, Tanzania, Uganda, Zambia, and Zimbabwe). The first phase identified essential components that make community-based efforts successful. The second phase includes dissemination of findings from Phase I in the five participating countries, developing and implementing action-oriented research activities to strengthen the client-support capabilities of selected local initiatives, and reporting research results. This document is a report on the implementation of the first activity under Phase II.