Autor: Umair, Muhammad - Prolib Integro

Skocz do pozycji: 1.

Autorzy:: Stirrat, Thomas
Umair, Muhammad
Martin, Robert
Waller, Joseph
Opis:: This study evaluates diverse educational resources to address the gaps in diagnostic radiology education for medical students, aiming to identify tools that enhance theoretical knowledge and practical diagnostic skills. Employing a multi-faceted review, we analyzed digital platforms, academic databases, and social media for resources beneficial to medical students in radiology, assessing their accessibility, content quality, and educational value. Our investigation uncovered a broad spectrum of resources, from foundational platforms to advanced simulation tools, varying in their approach to teaching radiology. Traditional resources provide essential theoretical knowledge, while digital tools, including interactive case studies and multimedia content, offer immersive learning experiences. Notably, resources integrating machine learning and social media facilitate dynamic, peer-to-peer learning and up-to-date case discussions. Despite the minimal current focus on VR, its role in enhancing interactive learning is notable. The diversity in educational tools highlights the evolving nature of radiology education, reflecting a shift towards more engaging and practical learning methodologies. Identifying and integrating a variety of educational resources into radiology education can significantly enhance learning outcomes for medical students, preparing them for the complexities of modern diagnostic radiology with a well-rounded educational approach.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 2.

Autorzy:: Amireh, Ahmad
Rafaat, Eleeza
O'Connor, Aisling
Martin, Clarissa
Umair, Muhammad
Waller, Joseph
Dempsey, John
Opis:: Purpose: Machine learning (ML) and deep learning (DL) can be utilized in radiology to help diagnosis and for predicting management and outcomes based on certain image findings. DL utilizes convolutional neural networks (CNN) and may be used to classify imaging features. The objective of this literature review is to summarize recent publications highlighting the key ways in which ML and DL may be applied in radiology, along with solutions to the problems that this implementation may face. Material and methods: Twenty-one publications were selected from the primary literature through a PubMed search. The articles included in our review studied a range of applications of artificial intelligence in radiology. Results: The implementation of artificial intelligence in diagnostic and interventional radiology may improve image analysis, aid in diagnosis, as well as suggest appropriate interventions, clinical predictive modelling, and trainee education. Potential challenges include ethical concerns and the need for appropriate datasets with accurate labels and large sample sizes to train from. Additionally, the training data should be representative of the population to which the future ML platform will be applicable. Finally, machines do not disclose a statistical rationale when expounding on the task purpose, making them difficult to apply in medical imaging. Conclusions: As radiologists report increased workload, utilization of artificial intelligence may provide improved outcomes in medical imaging by assisting, rather than guiding or replacing, radiologists.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 3.

Autorzy:: Cheng, Nina
Martin, Clarissa
Umair, Muhammad
Arya, Namrata
Waller, Joseph
Lin, Keldon
Diaz, Michael Joseph
Chang, Bryant
Henry, Travis
Opis:: Purpose: The global and ongoing COVID-19 outbreak has compelled the need for timely and reliable methods of detection for SARS-CoV-2 infection. Although reverse transcription-polymerase chain reaction (RT-PCR) has been widely accepted as a reference standard for COVID-19 diagnosis, several early studies have suggested the superior sensitivity of computed tomography (CT) in identifying SARS-CoV-2 infection. In a previous systematic review, we stratified studies based on risk for bias to evaluate the true sensitivity of CT for detecting SARS-CoV-2 infection. This study revisits our prior analysis, incorporating more current data to assess the sensitivity of CT for COVID-19. Material and methods: The PubMed and Google Scholar databases were searched for relevant articles published between 1 January 2020, and 25 April 2021. Exclusion criteria included lack of specification regarding whether the study cohort was adult or paediatric, whether patients were symptomatic or asymptomatic, and not identifying the source of RT-PCR specimens. Ultimately, 62 studies were included for systematic review and were subsequently stratified by risk for bias using the QUADAS-2 quality assessment tool. Sensitivity data were extracted for random effects meta-analyses. Results: The average sensitivity for COVID-19 reported by the high-risk-of-bias studies was 68% [CI: 58, 80; range: 38-96%] for RT-PCR and 91% [CI: 87, 96; range: 47-100%] for CT. The average sensitivity reported by the low-risk-of-bias studies was 84% [CI: 0.75, 0.94; range: 70-97%] for RT-PCR and 78% [CI: 71, 0.86; range: 44-92%] for CT. Conclusions: On average, the high-risk-of bias studies underestimated the sensitivity of RT-PCR and overestimated the sensitivity of CT for COVID-19. Given the incorporation of recently published low-risk-of-bias articles, the sensitivities according to low-risk-of-bias studies for both RT-PCR and CT were higher than previously reported.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 4.

Autorzy:: Jang, Isabel
Agyemang, Charles A.
Carter, Rebekah E.
Sharp, Wilson
Sevigny, Sarah
Tou, Leila C.
Umair, Muhammad
Diaz, Michael J.
Opis:: Purpose: Coronaviruses (CoV) are single-stranded RNA viruses that transmit from animal species to humans, causing a threat to global health. We aim to summarize common imaging findings of 3 betacoronaviruses (b-CoVs) and the common clinical manifestation, to provide a better understanding of the courses of the disease. Material and methods: The Pubmed and Google Scholar databases were searched for the terms "SARS-CoV" OR "COVID-19" OR "MERS-CoV". Imaging-specific searches included keyword searches for "CT" AND "imaging". Clinical presentation-specific searches included keyword searches for "clinical" AND "manifestation" AND "cardiovascular" OR "neurology" OR "gastrointestinal" OR "hematology". In total, 77 articles were selected for discussion in the current literature review. Results: Human b-CoVs infection presented consistent indications of ground-glass opacities (GGO), consolidation, and interlobular septal thickening. Pleural effusion was also common in all 3 b-CoVs, but it was least present in SARS-CoV-2 infection. Bilateral lung involvement was common to both MERS-CoV and SARS-CoV-2 infection. Cardiovascular, neurological, haematological, and gastrointestinal were common clinical presentations found in patients infected with b-CoVs. Conclusions: The comparison of imaging findings can be applied in clinical practice to distinguish the 3 CoV through different imaging modalities. It is crucial to understand the possible imaging findings and clinical presentations to better understand the course of the disease as well as prepare for future variants.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Jackknife winsorized variance estimator under imputed data
Autorzy:: Sohil, Fariha
Sohail, Muhammad Umair
Shabbir, Javid
Gupta, Sat
Tematy:: adjusted imputation
jackknife variance estimators
linearized jackknife
missing values
winsorized variance; Pokaż więcej
Wydawca:: Główny Urząd Statystyczny
Powiązania:: https://bibliotekanauki.pl/articles/2106879.pdf Link otwiera się w nowym oknie
Opis:: In the present study, we consider the problem of missing and extreme values for the estimation of population variance. The presence of extreme values either in the study variable, or the auxiliary variable, or in both of them, can adversely affect the performance of the estimation procedure. We consider three different situations for the presence of extreme values and also consider jackknife variance estimators for the population variance by handling these extreme values under stratified random sampling. Bootstrap technique ABB is carried out to understand the relative relationship more precisely.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: The impact of green human resource practices on environmental sustainability
Wpływ zielonych praktyk zasobów ludzkich na zrównoważone środowisko
Autorzy:: Ahmed, Umair
AlZgool, Mahmoud Radwan Hussein
Shah, Syed Mir Muhammad
Tematy:: green human resource practices
environmental sustainability
employee engagement
zielone praktyki zasobów ludzkich
zrównoważony rozwój środowiska
zaangażowanie pracowników; Pokaż więcej
Wydawca:: Politechnika Częstochowska
Powiązania:: https://bibliotekanauki.pl/articles/404700.pdf Link otwiera się w nowym oknie
Opis:: The present study focused on manufacturing firms of Bahrain to determine the influence of green human resource practices on employee engagement and environmental sustainability. Mediating role of employee engagement was observed as novelty of present study. The data was collected from manufacturing firms of Bahrain that strives for green practices from employees of firms including officers, staff members and clerical employees. The study found that green human resource practices have positive nexus with environmental sustainability and employee engagement mediates the nexus among the green human resource practices and environmental sustainability. Today’s business world focuses on green practices in order to be responsive towards environmental protection and environment friendly product and services.
Prezentowany artykuł przedstawia badanie, które koncentrowało się na firmach produkcyjnych w Bahrajnie w celu ustalenia wpływu “zielonych praktyk” w zakresie zasobów ludzkich na zaangażowanie pracowników i zrównoważenie środowiskowe. Mediacyjną rolę zaangażowania pracowników zaobserwowano, jako nowość przedstawionego badania. Dane zostały zebrane od firm produkcyjnych Bahrajnu, które dążą do zielonych praktyk wśród pracowników firm, w tym urzędników, członków personelu i pracowników biurowych. Badanie wykazało, że praktyki zielonych zasobów ludzkich mają pozytywny związek ze zrównoważeniem środowiskowym, a zaangażowanie pracowników pośredniczy w związku między praktykami ekologicznych zasobów ludzkich i zrównoważenia środowiskowego. Dzisiejszy świat biznesu koncentruje się na zielonych praktykach, aby reagować na ochronę środowiska oraz przyjazne dla środowiska produkty i usługi.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Geocellular modeling of the Cambrian to Eocene multi-reservoirs, Upper Indus Basin, Pakistan
Autorzy:: Ali, Abid
Attique Amer, Muhammad
Ehsan, Muhsan
Abdelrahman, Kamal
Radwan, Ahmed Eid Ahmed
Latif, Muhammad Ali Umair
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: The Role of China’s Exchange Rate on the Trade Balance of Sub‑Saharan Africa: a Gravity Model Approach
Rola kursu walutowego Chin w bilansie handlowym państw Afryki Subsaharyjskiej: zastosowanie modelu grawitacyjnego
Autorzy:: Khan, Hameed
Khan, Umair
Jiang, Li Jun
Khan, Muhammad Asif
Hasanat Shah, Syed
Tematy:: handel dwustronny
Chiny
ASS
bilateral trade
China
SSA; Pokaż więcej
Wydawca:: Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Powiązania:: https://bibliotekanauki.pl/articles/633205.pdf Link otwiera się w nowym oknie
Opis:: Niniejsze opracowanie prezentuje rezultaty badania wpływu kursu walutowego Chin na bilans handlowy 41 państw Afryki Subsaharyjskiej w latach 1994–2016. Przy zastosowaniu rozszerzonego modelu grawitacyjnego, pogrupowane i niepogrupowane wyniki badania potwierdzają słuszność podejścia elastycznościowego i absorpcyjnego do bilansu handlowego. Podobnie test wrażliwości, dokonany poprzez podział analizowanego okresu na dwa podokresy (2005–2016 i 1994–2004), potwierdza słuszność podejścia elastycznościowego i absorpcyjnego do bilansu handlowego.
This study seeks to investigate theimpactof China’sexchange rate onthe trade balance of 41 Sub‑aharan African countries for the period from 1994 to 2016. Using an augmented gravity model, the grouped and ungrouped results of the study confirm the elasticity and absorption approaches of the trade balance. Similarly, the robustness check, by dividing the sample period into two sub‑eriods (2005–016 and 1994–004), also confirms the elasticity and absorption approaches of the trade balance.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Effects of forming tools and process parameters on surface roughness in incremental sheet forming
Autorzy:: Khalil, Umair
Aziz, Muhammad Haris
Jahanzaib, Mirza
Ahmad, Wasim
Hussain, Salman
Hafeez, Faisal
Tematy:: ISF
quantitative survey
forming tool
forming parameters
surface roughness
badanie ilościowe
narzędzia do formowania
chropowatość powierzchni; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/103319.pdf Link otwiera się w nowym oknie
Opis:: Literature has vastly advocated for incremental sheet forming as a significant process for formation of sheet metal components, because of its higher formability in comparison with the rest of metal forming processes such as deep drawing and stamping. Due to high formability of incremental sheet forming it becomes important to investigate the main factors, influencing the quality of forming products. However, less attention has been given to investigate the inconsistencies reflected often in determining the effect of multiple forming parameters and parametric interactions comprising of spindle rotational speed and feed rate, tool size and sheet thickness, sheet thickness and step depth. This study investigates the effect of various principal factors including tool type, tool size, sheet thickness, spindle speed, feed rate, step increment including and their respective interaction on surface roughness. Research data was collected by undertaking extensive literature review of previous studies on incremental sheet forming regarding surface quality. A quantitative one way analysis of variance (ANOVA) was employed to analyze the significance and contribution of factors influencing surface quality of sheet forming. The findings highlight the contribution of forming parameters and their combined interactions on surface roughness. Based on the empirical findings, this study derives implications for the optimization of tool type, parametric interactions among principal factors and their respective optimized operational range for incremental sheet forming.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 10.

Tytuł:: Morpho-Physiological and Biochemical Responses of Cymbopogan citratus and Asparagus officinalis L. to Waterlogging and Salinity Stress
Autorzy:: Hanif, Asma
Sattar, Maida
Qiushi, Qin
Gul, Mah
Shahzad, Sobia
Jian, Wei
Hassan, Muhammad Umair
Al-Khayri, Jameel Mohammed
Aldaej, Mohammed Ibrahim
Sattar, Muhammad Naeem
Tematy:: antioxidants
chlorophyll
phenolics
waterlogging
salinity; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59114236.pdf Link otwiera się w nowym oknie
Opis:: Salinity stress is an alarming issue causing a substantial reduction in crop productivity. Waterlogging also limits crop productivity and the extent of both these stresses is increasing due to climate change and global warming. This study investigated the response of Lemongrass and Asparagus grass under salinity stress and waterlogged conditions. The study was comprised of different treatments: control, salinity stress, waterlogged conditions and salinity stress + waterlogged conditions. The results revealed that salinity + waterlogging pressure negatively affected cymbopogan citratus and Asparagus officinalis. The physio-morphological, biochemical attributes, enzymatic antioxidants, and nutrient parameters showed a greater reduction under combined salinity and water waterlogged conditions. Waterlogging caused a marked decrease in root growth, leaves production and plant height of both grasses, compared to the control. Salinity stress also resulted in similar morphological modifications, albeit to a lesser extent. Physiological analysis showed a decline in chlorophyll content and RWC, indicating reduced photosynthetic capacity and water uptake efficiency in response to waterlogging and salinity. Electrolyte leakage, increased significantly under waterlogging and salinity stress, suggesting cellular damage and membrane disruption. C.citratus exhibited greater resilience to waterlogging and salinity compared to A. officinalis. Despite the adverse conditions, C. citratus maintained higher chlorophyll content, RWC, and lower electrolyte leakage, indicating better stress tolerance mechanisms. In conclusion, waterlogging and salinity induced significant morphophysiological modifications in both C. citratus and A. officinalis. However, C. citratus exhibited better tolerance to these stresses, suggesting its potential for cultivation in waterlogged and saline environments.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Informacja

Wyszukujesz frazę "Umair, Muhammad" wg kryterium: Autor