177 research outputs found
The Antecedents of Hotels’ Green Creativity:The Role of Green HRM, Environmentally Specific Servant Leadership, and Psychological Green Climate
As a consequence of climate change, hotels are under mounting pressure to cut their carbon emissions, reduce their waste, and overall become more responsible in their operations. Given this context, experts claim that organisational human resources practices have immense ability to mould the behaviours of individuals. On the basis of w theory, we used a configuration of green human resources management, environmentally specific servant leadership, and psychological green climate to develop causal recipes for stimulating green creativity in hotel employees. Data were collected from 418 employees and analysed using an fsQCA to test the proposed model. Findings revealed that no single construct was sufficient to predict employees’ green creativity, but three causal recipes (i.e., green human respurces management, environmentally specific servant leadership, and psychological green climate) can be demonstrated to produce high green creativity. The study findings show that green human resources managment practices influence individual green creativity. It also indicated that environmentally specific servant leadership is a key driver of green creativity. Moreover, psychological green climate has a signifcant influence on green creativity. Our study has meaningful implications for hotel managers that can help them to develop new approaches and strategies to improve the employees’ green creativity by paying attention to green human resources managment practices, environmentally specific servant leadership, and psychological green climate
A cross-cultural investigation of the relationship between eco-innovation and customers boycott behaviour
Retailers are under pressure to utilise eco-innovation to improve their operations and reduce customers boycotts as a result of the growing concerns of customers about environmental issues. Thus, this paper examines the effect of eco-innovation (i.e., reactive eco-innovation, proactive eco-innovation) on customers boycotts behaviours across various cultural environments. It also explores the role of ethical ideology (i.e., idealism, relativism) on this relationship. Based on psychological contract violation theory was used to develop our study model. We collected data from 3392 consumers from four different countries to test the study model. The results indicated that company's reactive eco-innovation is positively related to customers boycotts behaviour and this relationship is stronger in the developed societies (i.e., UK, USA) than in the developing societies (i.e., Saudi Arabia, Egypt). Furthermore, proactive eco-innovation has a negative effect on boycotts. This link is stronger in the in the developing societies (i.e., Saudi Arabia, Egypt) than in the developed societies (i.e., UK, USA). Psychological contract violation and environmental concerns were found to mediate this relationship. Moreover, our study found that idealism has a negative influence on boycotts while relativism has a positive effect on boycotts. Our study offers meaningful theoretical and managerial implications for retailers in different cultural contexts
Optical character recognition on heterogeneous SoC for HD automatic number plate recognition system
Automatic number plate recognition (ANPR) systems are becoming vital for safety and security purposes. Typical ANPR systems are based on three stages: number plate localization (NPL), character segmentation (CS), and optical character recognition (OCR). Recently, high definition (HD) cameras have been used to improve their recognition rates. In this paper, four algorithms are proposed for the OCR stage of a real-time HD ANPR system. The proposed algorithms are based on feature extraction (vector crossing, zoning, combined zoning, and vector crossing) and template matching techniques. All proposed algorithms have been implemented using MATLAB as a proof of concept and the best one has been selected for hardware implementation using a heterogeneous system on chip (SoC) platform. The selected platform is the Xilinx Zynq-7000 All Programmable SoC, which consists of an ARM processor and programmable logic. Obtained hardware implementation results have shown that the proposed system can recognize one character in 0.63 ms, with an accuracy of 99.5% while utilizing around 6% of the programmable logic resources. In addition, the use of the heterogenous SoC consumes 36 W which is equivalent to saving around 80% of the energy consumed by the PC used in this work, whereas it is smaller in size by 95%
Evaluating the Transformative Impact of Online Education on Medical Student Learning Outcomes
Hessah Alshammari,1 Sameerah Shaheen,2 Shimaa Mahmoud,2 Amal Al-Rabiah,2 Khaleel Alyahya2 1Department of Cardiac Sciences, King Saud University, Riyadh, Saudi Arabia; 2Department of Anatomy, King Saud University, Riyadh, Saudi ArabiaCorrespondence: Hessah Alshammari, Department of Cardiac Sciences, King Saud, University, Riyadh, Saudi Arabia, Email [email protected]: The COVID-19 pandemic forced educational institutions worldwide to shift to online learning as a means to continue education during lockdowns and social distancing measures. This study investigates the effectiveness of online learning in comparison to traditional on-campus learning, specifically within the context of medical education.Methods: Two hundred and three first- and second-year medical students at King Saud University participated in this randomized experimental study. The research employed written exams to evaluate learning outcomes, with a focus on the understanding of lecture content. Data analysis was performed using the Statistical Package for Social Studies (SPSS 22).Results: The findings reveal that while online learning attained similar learning outcomes to on-campus learning for content related to the early parts of the lecture, significantly lower outcomes were achieved by the online learners as the lecture progressed. Moreover, a smaller percentage of online students demonstrated a full understanding of the lecture material compared to on-campus students.Conclusion: This study emphasizes the importance of assessing the effectiveness of online learning methods, particularly in medical education, to address students’ needs better and improve the quality of online learning systems.Keywords: online learning, COVID-19 pandemic, medical education, learning outcomes, student assessment, educational effectivenes
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Systematic review: The identification of segmental Mandarin-accented English features
Background
The pronunciation of L2 English by L1 Mandarin speakers is influenced by transfer effects from the phonology of Mandarin. However, there is a research gap in systematically synthesizing and reviewing segmental Mandarin-accented English features (SMAEFs) from the existing literature. An accurate and comprehensive description of SMAEFs is necessary for applied science in relevant fields.
Aim
To identify the segmental features that are most consistently described as characteristic of Mandarin-accented English in previous literature.
Methods
A systematic review was conducted. The studies were identified through searching in nine databases with eight screening criteria.
Results
The systematic review includes nineteen studies with a total of 1,873 Mandarin English speakers. The included studies yield 45 SMAEFs, classified into Vowel and Consonant categories, under which there are multiple sub-categories. The results are supported by evidence of different levels of strength. The four frequently reported findings, which are 1) variations in vowel height and frontness, 2) schwa epenthesis, 3) variations in closure duration in plosives and 4) illegal consonant deletion, were identified and analyzed in terms of their potential intelligibility outcomes.
Conclusion
The number of SMAEFs is large. These features occur in numerous traditional phonetic categories and two categories (i.e. schwa epenthesis and illegal consonant deletion) that are typically used to describe features in connected speech. The study outcomes may provide valuable insights for researchers and practitioners in the fields of English Language Teaching, phonetics, and speech recognition system development in terms of selecting the pronunciation features to focus on in teaching and research or supporting the successful identification of accented features
Surgical site infection after gastrointestinal surgery in high-income, middle-income, and low-income countries: a prospective, international, multicentre cohort study
Background: Surgical site infection (SSI) is one of the most common infections associated with health care, but its importance as a global health priority is not fully understood. We quantified the burden of SSI after gastrointestinal surgery in countries in all parts of the world.
Methods: This international, prospective, multicentre cohort study included consecutive patients undergoing elective or emergency gastrointestinal resection within 2-week time periods at any health-care facility in any country. Countries with participating centres were stratified into high-income, middle-income, and low-income groups according to the UN's Human Development Index (HDI). Data variables from the GlobalSurg 1 study and other studies that have been found to affect the likelihood of SSI were entered into risk adjustment models. The primary outcome measure was the 30-day SSI incidence (defined by US Centers for Disease Control and Prevention criteria for superficial and deep incisional SSI). Relationships with explanatory variables were examined using Bayesian multilevel logistic regression models. This trial is registered with ClinicalTrials.gov, number NCT02662231.
Findings: Between Jan 4, 2016, and July 31, 2016, 13 265 records were submitted for analysis. 12 539 patients from 343 hospitals in 66 countries were included. 7339 (58·5%) patient were from high-HDI countries (193 hospitals in 30 countries), 3918 (31·2%) patients were from middle-HDI countries (82 hospitals in 18 countries), and 1282 (10·2%) patients were from low-HDI countries (68 hospitals in 18 countries). In total, 1538 (12·3%) patients had SSI within 30 days of surgery. The incidence of SSI varied between countries with high (691 [9·4%] of 7339 patients), middle (549 [14·0%] of 3918 patients), and low (298 [23·2%] of 1282) HDI (p < 0·001). The highest SSI incidence in each HDI group was after dirty surgery (102 [17·8%] of 574 patients in high-HDI countries; 74 [31·4%] of 236 patients in middle-HDI countries; 72 [39·8%] of 181 patients in low-HDI countries). Following risk factor adjustment, patients in low-HDI countries were at greatest risk of SSI (adjusted odds ratio 1·60, 95% credible interval 1·05–2·37; p=0·030). 132 (21·6%) of 610 patients with an SSI and a microbiology culture result had an infection that was resistant to the prophylactic antibiotic used. Resistant infections were detected in 49 (16·6%) of 295 patients in high-HDI countries, in 37 (19·8%) of 187 patients in middle-HDI countries, and in 46 (35·9%) of 128 patients in low-HDI countries (p < 0·001).
Interpretation: Countries with a low HDI carry a disproportionately greater burden of SSI than countries with a middle or high HDI and might have higher rates of antibiotic resistance. In view of WHO recommendations on SSI prevention that highlight the absence of high-quality interventional research, urgent, pragmatic, randomised trials based in LMICs are needed to assess measures aiming to reduce this preventable complication
An extremely rare complete bilateral duplication of Inferior vena cava in a male cadaver: anatomy, embryology and clinical relevance
The study presented an extremely rare case of real complete bilateral duplication of inferior vena cava (IVC) in a male cadaver which has never been reported before. Both IVC had approximately the same diameter. The right IVC drained into the right atrium; the left IVC continued as hemiazygos vein and drained into the superior vena cava. Three anastomotic venous channels, a cranial preaortic, a middle and a caudal retroaortic, joined both vessels. Multiple variations in the way of drainage of posterior intercostal veins, on both sides, were also present. The present report invalidates an old classification defining the two vessels when joined at the level of the renal veins as complete bilateral duplication of IVC. Although the presence of combination of venous variations is extremely rare, awareness of such variations is essential for clinical and surgical procedures to avoid misdiagnosis and surgical complications
Maternal mental health during COVID-19 pandemic outbreak: A cross-sectional comparative study
BackgroundAs COVID-19 spread in several countries, social distancing measures was implemented around the world, affecting the quality of lives for millions of people. The impact was more pronounced on vulnerable populations such as pregnant women, who are at even more risk due to their suppressed immune system. Moreover, mental health disorders are more common among pregnant women compared to non-pregnant. This study aims to assess the influence of social isolation measures due to the COVID-19 pandemic on the mental health of women in their third trimester and postpartum.Material and methodsThis is a cross-sectional survey-based study conducted in Khalid University Hospital, Riyadh, Saudi Arabia, between the months of April to May 2021, to explore depression and anxiety levels in females who gave birth during the COVID-19 pandemic. In addition to background demographic data, the survey included Patient Health Questionnaire-9 (PHQ-9) and Generalized Anxiety Disorder Scale-7 (GAD-7) were utilized to detect symptoms of depression and anxiety, respectively.ResultsA total of 283 women were included in this study, almost half of them were ante-natal (n-141) and the rest were post-natal (n = 124). 62.3% were in the age groups of 25–35 years. Based on the PHQ-9 scoring, 65% of the study sample had depression (ranging from mild to severe). Moreover, based on GAD-7 scoring, 49.1% had anxiety (ranging from mild to severe). No association was found between PHQ-9 and GAD-7 scores and different sociodemographic and obstetric factors. Additionally, the mean scores of women infected with COVID-19 vs. women who has never been diagnosed with COVID-19 were closely comparable.ConclusionsWe reported a high prevalence of depression and anxiety among pregnant women during COVID-19 pandemic. Policymakers and health care providers are advised to implement targeted preventive measures for pregnant women to improve mental health in times of epidemics
Forecasting the effects of smoking prevalence scenarios on years of life lost and life expectancy from 2022 to 2050: a systematic analysis for the Global Burden of Disease Study 2021
Background: Smoking is the leading behavioural risk factor for mortality globally, accounting for more than 175 million deaths and nearly 4·30 billion years of life lost (YLLs) from 1990 to 2021. The pace of decline in smoking prevalence has slowed in recent years for many countries, and although strategies have recently been proposed to achieve tobacco-free generations, none have been implemented to date. Assessing what could happen if current trends in smoking prevalence persist, and what could happen if additional smoking prevalence reductions occur, is important for communicating the effect of potential smoking policies. Methods: In this analysis, we use the Institute for Health Metrics and Evaluation's Future Health Scenarios platform to forecast the effects of three smoking prevalence scenarios on all-cause and cause-specific YLLs and life expectancy at birth until 2050. YLLs were computed for each scenario using the Global Burden of Disease Study 2021 reference life table and forecasts of cause-specific mortality under each scenario. The reference scenario forecasts what could occur if past smoking prevalence and other risk factor trends continue, the Tobacco Smoking Elimination as of 2023 (Elimination-2023) scenario quantifies the maximum potential future health benefits from assuming zero percent smoking prevalence from 2023 onwards, whereas the Tobacco Smoking Elimination by 2050 (Elimination-2050) scenario provides estimates for countries considering policies to steadily reduce smoking prevalence to 5%. Together, these scenarios underscore the magnitude of health benefits that could be reached by 2050 if countries take decisive action to eliminate smoking. The 95% uncertainty interval (UI) of estimates is based on the 2·5th and 97·5th percentile of draws that were carried through the multistage computational framework. Findings: Global age-standardised smoking prevalence was estimated to be 28·5% (95% UI 27·9–29·1) among males and 5·96% (5·76–6·21) among females in 2022. In the reference scenario, smoking prevalence declined by 25·9% (25·2–26·6) among males, and 30·0% (26·1–32·1) among females from 2022 to 2050. Under this scenario, we forecast a cumulative 29·3 billion (95% UI 26·8–32·4) overall YLLs among males and 22·2 billion (20·1–24·6) YLLs among females over this period. Life expectancy at birth under this scenario would increase from 73·6 years (95% UI 72·8–74·4) in 2022 to 78·3 years (75·9–80·3) in 2050. Under our Elimination-2023 scenario, we forecast 2·04 billion (95% UI 1·90–2·21) fewer cumulative YLLs by 2050 compared with the reference scenario, and life expectancy at birth would increase to 77·6 years (95% UI 75·1–79·6) among males and 81·0 years (78·5–83·1) among females. Under our Elimination-2050 scenario, we forecast 735 million (675–808) and 141 million (131–154) cumulative YLLs would be avoided among males and females, respectively. Life expectancy in 2050 would increase to 77·1 years (95% UI 74·6–79·0) among males and 80·8 years (78·3–82·9) among females. Interpretation: Existing tobacco policies must be maintained if smoking prevalence is to continue to decline as forecast by the reference scenario. In addition, substantial smoking-attributable burden can be avoided by accelerating the pace of smoking elimination. Implementation of new tobacco control policies are crucial in avoiding additional smoking-attributable burden in the coming decades and to ensure that the gains won over the past three decades are not lost. Funding: Bloomberg Philanthropies and the Bill & Melinda Gates Foundation
Global, regional, and national burden of stroke and its risk factors, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021
Background: Up-to-date estimates of stroke burden and attributable risks and their trends at global, regional, and national levels are essential for evidence-based health care, prevention, and resource allocation planning. We aimed to provide such estimates for the period 1990–2021. Methods: We estimated incidence, prevalence, death, and disability-adjusted life-year (DALY) counts and age-standardised rates per 100 000 people per year for overall stroke, ischaemic stroke, intracerebral haemorrhage, and subarachnoid haemorrhage, for 204 countries and territories from 1990 to 2021. We also calculated burden of stroke attributable to 23 risk factors and six risk clusters (air pollution, tobacco smoking, behavioural, dietary, environmental, and metabolic risks) at the global and regional levels (21 GBD regions and Socio-demographic Index [SDI] quintiles), using the standard GBD methodology. 95% uncertainty intervals (UIs) for each individual future estimate were derived from the 2·5th and 97·5th percentiles of distributions generated from propagating 500 draws through the multistage computational pipeline. Findings: In 2021, stroke was the third most common GBD level 3 cause of death (7·3 million [95% UI 6·6–7·8] deaths; 10·7% [9·8–11·3] of all deaths) after ischaemic heart disease and COVID-19, and the fourth most common cause of DALYs (160·5 million [147·8–171·6] DALYs; 5·6% [5·0–6·1] of all DALYs). In 2021, there were 93·8 million (89·0–99·3) prevalent and 11·9 million (10·7–13·2) incident strokes. We found disparities in stroke burden and risk factors by GBD region, country or territory, and SDI, as well as a stagnation in the reduction of incidence from 2015 onwards, and even some increases in the stroke incidence, death, prevalence, and DALY rates in southeast Asia, east Asia, and Oceania, countries with lower SDI, and people younger than 70 years. Globally, ischaemic stroke constituted 65·3% (62·4–67·7), intracerebral haemorrhage constituted 28·8% (28·3–28·8), and subarachnoid haemorrhage constituted 5·8% (5·7–6·0) of incident strokes. There were substantial increases in DALYs attributable to high BMI (88·2% [53·4–117·7]), high ambient temperature (72·4% [51·1 to 179·5]), high fasting plasma glucose (32·1% [26·7–38·1]), diet high in sugar-sweetened beverages (23·4% [12·7–35·7]), low physical activity (11·3% [1·8–34·9]), high systolic blood pressure (6·7% [2·5–11·6]), lead exposure (6·5% [4·5–11·2]), and diet low in omega-6 polyunsaturated fatty acids (5·3% [0·5–10·5]). Interpretation: Stroke burden has increased from 1990 to 2021, and the contribution of several risk factors has also increased. Effective, accessible, and affordable measures to improve stroke surveillance, prevention (with the emphasis on blood pressure, lifestyle, and environmental factors), acute care, and rehabilitation need to be urgently implemented across all countries to reduce stroke burden. Funding: Bill & Melinda Gates Foundation
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