19 research outputs found

    Influence of Lean-Green Practices on The Relationship Networks and Performance of Medium Hotels in the Kenyan Cities

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    Purpose: Examine the influence of lean-green practices on the relationship between networks and performance of medium hotels in the Kenyan cities. Design/methodology/approach: The study was anchored on dynamic capability theory. Pragmatic research paradigm employing mixed method was applied which uilized concurrent triangulation research design. The target population was 534 medium hotels. Stratified random sampling technique was used to determine a sample size of 229 hotels. Findings: The study found that networks positively influenced performance of medium hotels in Kenyan cities and lean-green practices positively and significantly influences on the relationship between networks and performance of medium hotels in Kenyan cities. Designing, implementing and utilizing lean-green practices in collaboration with networking in medium hotels is important in production matrix. Research limitations/implications: Focus was on medium hotels in the Kenyan cities. Practical implications: Results of this research shows that lean-green practices constitute one of the most important strategies resulting in performance. Originality/value: This research is original because the research was conducted in Kenya and there is no other similar research in Kenya

    The prevalence of Plasmodium falciparum in sub-Saharan Africa since 1900.

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    Malaria transmission is influenced by climate, land use and deliberate interventions. Recent declines have been observed in malaria transmission. Here we show that the African continent has witnessed a long-term decline in the prevalence of Plasmodium falciparum from 40% prevalence in the period 1900-1929 to 24% prevalence in the period 2010-2015, a trend that has been interrupted by periods of rapidly increasing or decreasing transmission. The cycles and trend over the past 115 years are inconsistent with explanations in terms of climate or deliberate intervention alone. Previous global initiatives have had minor impacts on malaria transmission, and a historically unprecedented decline has been observed since 2000. However, there has been little change in the high transmission belt that covers large parts of West and Central Africa. Previous efforts to model the changing patterns of P. falciparum transmission intensity in Africa have been limited to the past 15 years or have used maps drawn from historical expert opinions. We provide quantitative data, from 50,424 surveys at 36,966 geocoded locations, that covers 115 years of malaria history in sub-Saharan Africa; inferring from these data to future trends, we would expect continued reductions in malaria transmission, punctuated with resurgences

    Ancient DNA and deep population structure in sub-Saharan African foragers

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    Multiple lines of genetic and archaeological evidence suggest that there were major demographic changes in the terminal Late Pleistocene epoch and early Holocene epoch of sub-Saharan Africa(1-4). Inferences about this period are challenging to make because demographic shifts in the past 5,000 years have obscured the structures of more ancient populations(3,5). Here we present genome-wide ancient DNA data for six individuals from eastern and south-central Africa spanning the past approximately 18,000 years (doubling the time depth of sub-Saharan African ancient DNA), increase the data quality for 15 previously published ancient individuals and analyse these alongside data from 13 other published ancient individuals. The ancestry of the individuals in our study area can be modelled as a geographically structured mixture of three highly divergent source populations, probably reflecting Pleistocene interactions around 80-20 thousand years ago, including deeply diverged eastern and southern African lineages, plus a previously unappreciated ubiquitous distribution of ancestry that occurs in highest proportion today in central African rainforest hunter-gatherers. Once established, this structure remained highly stable, with limited long-range gene flow. These results provide a new line of genetic evidence in support of hypotheses that have emerged from archaeological analyses but remain contested, suggesting increasing regionalization at the end of the Pleistocene epoch. DNA analysis of 6 individuals from eastern and south-central Africa spanning the past approximately 18,000 years, and of 28 previously published ancient individuals, provides genetic evidence supporting hypotheses of increasing regionalization at the end of the Pleistocene.info:eu-repo/semantics/publishedVersio

    Windborne long-distance migration of malaria mosquitoes in the Sahel

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    Over the past two decades efforts to control malaria have halved the number of cases globally, yet burdens remain high in much of Africa and the elimination of malaria has not been achieved even in areas where extreme reductions have been sustained, such as South Africa1,2. Studies seeking to understand the paradoxical persistence of malaria in areas in which surface water is absent for 3–8 months of the year have suggested that some species of Anopheles mosquito use long-distance migration3. Here we confirm this hypothesis through aerial sampling of mosquitoes at 40–290 m above ground level and provide—to our knowledge—the first evidence of windborne migration of African malaria vectors, and consequently of the pathogens that they transmit. Ten species, including the primary malaria vector Anopheles coluzzii, were identified among 235 anopheline mosquitoes that were captured during 617 nocturnal aerial collections in the Sahel of Mali. Notably, females accounted for more than 80% of all of the mosquitoes that we collected. Of these, 90% had taken a blood meal before their migration, which implies that pathogens are probably transported over long distances by migrating females. The likelihood of capturing Anopheles species increased with altitude (the height of the sampling panel above ground level) and during the wet seasons, but variation between years and localities was minimal. Simulated trajectories of mosquito flights indicated that there would be mean nightly displacements of up to 300 km for 9-h flight durations. Annually, the estimated numbers of mosquitoes at altitude that cross a 100-km line perpendicular to the prevailing wind direction included 81,000 Anopheles gambiae sensu stricto, 6 million A. coluzzii and 44 million Anopheles squamosus. These results provide compelling evidence that millions of malaria vectors that have previously fed on blood frequently migrate over hundreds of kilometres, and thus almost certainly spread malaria over these distances. The successful elimination of malaria may therefore depend on whether the sources of migrant vectors can be identified and controlled

    Digital auscultation in PERCH: Associations with chest radiography and pneumonia mortality in children.

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    BACKGROUND: Whether digitally recorded lung sounds are associated with radiographic pneumonia or clinical outcomes among children in low-income and middle-income countries is unknown. We sought to address these knowledge gaps. METHODS: We enrolled 1 to 59monthold children hospitalized with pneumonia at eight African and Asian Pneumonia Etiology Research for Child Health sites in six countries, recorded digital stethoscope lung sounds, obtained chest radiographs, and collected clinical outcomes. Recordings were processed and classified into binary categories positive or negative for adventitial lung sounds. Listening and reading panels classified recordings and radiographs. Recording classification associations with chest radiographs with World Health Organization (WHO)-defined primary endpoint pneumonia (radiographic pneumonia) or mortality were evaluated. We also examined case fatality among risk strata. RESULTS: Among children without WHO danger signs, wheezing (without crackles) had a lower adjusted odds ratio (aOR) for radiographic pneumonia (0.35, 95% confidence interval (CI): 0.15, 0.82), compared to children with normal recordings. Neither crackle only (no wheeze) (aOR: 2.13, 95% CI: 0.91, 4.96) or any wheeze (with or without crackle) (aOR: 0.63, 95% CI: 0.34, 1.15) were associated with radiographic pneumonia. Among children with WHO danger signs no lung recording classification was independently associated with radiographic pneumonia, although trends toward greater odds of radiographic pneumonia were observed among children classified with crackle only (no wheeze) or any wheeze (with or without crackle). Among children without WHO danger signs, those with recorded wheezing had a lower case fatality than those without wheezing (3.8% vs. 9.1%, p = .03). CONCLUSIONS: Among lower risk children without WHO danger signs digitally recorded wheezing is associated with a lower odds for radiographic pneumonia and with lower mortality. Although further research is needed, these data indicate that with further development digital auscultation may eventually contribute to child pneumonia care

    Entrepreneurial Mindset, Lean-Green practices and firm performance among medium hotels in Kenyan cities

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    Firms are driven to maximize profits, requiring specialized techniques to improve performance. Firms can handle chaotic conditions by acting strategically. Global studies show high early-stage SME death rates. Hospitality studies have not examined how lean-green methods boost performance and competitiveness. Lean-green methods affect the entrepreneurial spirit and performance of medium-sized hotels in Kenyan cities. The paper relies on discovery and dynamic capability theory. The article used mixed-methods, concurrent triangulation, and pragmatic philosophy. 534 medium hotel managers in Mombasa, Nairobi, and Kisumu were studied, and 229 were sampled using stratified random sampling. Data was collected by questionnaire and saved in MS Excel for case-variable screening and cleaning. SPSS 22 was used for data analysis. Pearson's correlation and regression models analyzed quantitative data. In Kenyan cities, entrepreneurial attitude positively affects medium hotel performance (=.775, t = 17.499, p.05). Lean-green synergy positively impacted performance (? =.527, t = 12.497, p ?.05) and moderated the connection between entrepreneurial mentality and business performance. The study found that lean-green techniques boost performance. Lean-green production strategies are recommended by the study. These findings benefit hotel entrepreneurs, managers, academia, and legislators. The study proposes studying other industries besides hospitality to see whether comparable findings are found

    Entrepreneurial Mindset, Lean-Green practices and firm performance among medium hotels in Kenyan cities

    No full text
    Firms are driven to maximize profits, requiring specialized techniques to improve performance. Firms can handle chaotic conditions by acting strategically. Global studies show high early-stage SME death rates. Hospitality studies have not examined how lean-green methods boost performance and competitiveness. Lean-green methods affect the entrepreneurial spirit and performance of medium-sized hotels in Kenyan cities. The paper relies on discovery and dynamic capability theory. The article used mixed-methods, concurrent triangulation, and pragmatic philosophy. 534 medium hotel managers in Mombasa, Nairobi, and Kisumu were studied, and 229 were sampled using stratified random sampling. Data was collected by questionnaire and saved in MS Excel for case-variable screening and cleaning. SPSS 22 was used for data analysis. Pearson's correlation and regression models analyzed quantitative data. In Kenyan cities, entrepreneurial attitude positively affects medium hotel performance (=.775, t = 17.499, p.05). Lean-green synergy positively impacted performance (? =.527, t = 12.497, p ?.05) and moderated the connection between entrepreneurial mentality and business performance. The study found that lean-green techniques boost performance. Lean-green production strategies are recommended by the study. These findings benefit hotel entrepreneurs, managers, academia, and legislators. The study proposes studying other industries besides hospitality to see whether comparable findings are found

    Moderating influence of lean-green practices on the relationship between capital mobilization and performance of medium hotels in the Kenyan cities

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    The objective of this study was to investigate the impact of capital mobilization on the operational outcomes of medium-sized hotels located in urban areas of Kenya. The research was grounded in the framework of dynamic capability theory. The study employed a pragmatic research paradigm that utilized mixed methodologies and employed a contemporaneous triangulation research methodology. The sample consisted of 534 medium-sized hotels. The researchers employed a stratified random sampling methodology to ascertain a sample size of 229 hotels. The research was grounded in the theoretical framework of the natural resource-based perspective. In order to examine the goal hypothesis, the researchers calculated the beta coefficient and conducted a t-test to assess the association between capital mobilization and the performance of medium hotels in Kenya. The significance level for this test was set at 5%. The null hypothesis was rejected based on the statistically significant estimated beta value (0.698, p = 0.000), indicating a confirmed substantial association between capital mobilization and the performance of medium hotels in urban areas of Kenya. The performance of a firm is influenced by the amalgamation of employees' knowledge and abilities, which are integrated through various processes and procedures. This integration not only shapes the structure of the organization but also facilitates the generation of value. The study suggests that it would be beneficial to focus on implementing lean-green practices during capital growth, as these practices have been shown to align with improved performance. Additionally, it is recommended to place greater emphasis on incorporating the concept of 5S into entrepreneurship courses at all levels of education

    Moderating influence of lean-green practices on the relationship between capital mobilization and performance of medium hotels in the Kenyan cities

    No full text
    The objective of this study was to investigate the impact of capital mobilization on the operational outcomes of medium-sized hotels located in urban areas of Kenya. The research was grounded in the framework of dynamic capability theory. The study employed a pragmatic research paradigm that utilized mixed methodologies and employed a contemporaneous triangulation research methodology. The sample consisted of 534 medium-sized hotels. The researchers employed a stratified random sampling methodology to ascertain a sample size of 229 hotels. The research was grounded in the theoretical framework of the natural resource-based perspective. In order to examine the goal hypothesis, the researchers calculated the beta coefficient and conducted a t-test to assess the association between capital mobilization and the performance of medium hotels in Kenya. The significance level for this test was set at 5%. The null hypothesis was rejected based on the statistically significant estimated beta value (0.698, p = 0.000), indicating a confirmed substantial association between capital mobilization and the performance of medium hotels in urban areas of Kenya. The performance of a firm is influenced by the amalgamation of employees' knowledge and abilities, which are integrated through various processes and procedures. This integration not only shapes the structure of the organization but also facilitates the generation of value. The study suggests that it would be beneficial to focus on implementing lean-green practices during capital growth, as these practices have been shown to align with improved performance. Additionally, it is recommended to place greater emphasis on incorporating the concept of 5S into entrepreneurship courses at all levels of education
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