LIVIVO - Search results -

Search results

Result 1 - 10 of total 40

Search options

Article ; Online: A Survey of OCR in Arabic Language

Safiullah Faizullah / Muhammad Sohaib Ayub / Sajid Hussain / Muhammad Asad Khan

Applied Sciences, Vol 13, Iss 4584, p

Applications, Techniques, and Challenges

2023 Volume 4584

Abstract: Optical character recognition (OCR) is the process of extracting handwritten or printed text from a scanned or printed image and converting it to a machine-readable form for further data processing, such as searching or editing. Automatic text extraction ...

Abstract	Optical character recognition (OCR) is the process of extracting handwritten or printed text from a scanned or printed image and converting it to a machine-readable form for further data processing, such as searching or editing. Automatic text extraction using OCR helps to digitize documents for improved productivity and accessibility and for preservation of historical documents. This paper provides a survey of the current state-of-the-art applications, techniques, and challenges in Arabic OCR. We present the existing methods for each step of the complete OCR process to identify the best-performing approach for improved results. This paper follows the keyword-search method for reviewing the articles related to Arabic OCR, including the backward and forward citations of the article. In addition to state-of-art techniques, this paper identifies research gaps and presents future directions for Arabic OCR.
Keywords	optical character recognition ; Arabic OCR ; preprocessing ; segmentation ; classification ; postprocessing ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
Subject code	006
Language	English
Publishing date	2023-04-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Carbonation Resistance in Ordinary Portland Cement Concrete with and without Recycled Coarse Aggregate in Natural and Simulated Environment

Wajeeha Mahmood / Asad-ur-Rehman Khan / Tehmina Ayub

Sustainability, Vol 14, Iss 437, p

2022 Volume 437

Abstract: This research aims to examine the effect of carbonation on the strength properties and carbonation depth of ordinary Portland cement (OPC) concrete using two different water to cement ratios ( w / c ) and two different replacement percentages of natural ... ...

Abstract	This research aims to examine the effect of carbonation on the strength properties and carbonation depth of ordinary Portland cement (OPC) concrete using two different water to cement ratios ( w / c ) and two different replacement percentages of natural coarse aggregate (NCA) with recycled coarse aggregate (RCA). Two concrete mixes were prepared using w / c of 0.4 and 0.43. The two concrete mixes were subdivided into two subgroups based on the use of NCA and 30% RCA. The first concrete mix having w / c of 0.4 was contained NCA and from this concrete, 42 cylinders of 100 mm dia. and 200 mm height were cast. Six out of 42 cylinders served as control specimens and were not exposed to CO 2 . A total of 18 out of the remaining 36 cylinders was exposed to the simulated environment and the rest were exposed to the natural environment. The second concrete mix having a w / c of 0.4 contained 30% RCA/70% NCA, and using this concrete, 42 cylinders of similar size were cast. A similar scheme was adopted for w / c of 0.43 and, in total, 84 cylinders using four mix designs were cast. After casting and 28 days of curing, six out of 42 cylinders cast from each concrete mix design were tested for compression and splitting tensile strength, following ASTM C39 and ASTM C496 without any exposure to carbon dioxide (CO 2 ). A total of 18 out of the remaining 36 cylinders was exposed to the simulated environment in a carbonation chamber for an equivalent time duration of 90, 180 and 365 days following CEN test guidelines and the other 18 cylinders were kept in the natural environment for a period of 90, 180 and 365 days. After the completion of simulated and natural exposure periods, these cylinders were distributed equally to test for compressive strength and splitting tensile strength to observe the effect of carbon dioxide (CO 2 ) at each time duration (i.e., 90, 180 and 365 days), and replacement percentage of RCA (i.e., 0 and 30%), which showed that carbonation depth increases incrementally with the w / c ratio and CO 2 exposure ...
Keywords	natural coarse aggregate (NCA) ; recycled coarse aggregate ; water-cement ratio ; carbonation ; compressive strength ; splitting tensile strength ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	690
Language	English
Publishing date	2022-12-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Durability Performance of SCC and SCGC Containing Recycled Concrete Aggregates

Tehmina Ayub / Wajeeha Mahmood / Asad-ur-Rehman Khan

Sustainability, Vol 13, Iss 8621, p

A Comparative Study

2021 Volume 8621

Abstract: This study assesses the behaviour of self-compacting geopolymer concrete (SCGC) with and without recycled concrete aggregates (RCA) by studying the rheological, mechanical and durability properties and comparison with self-compacting concrete (SCC). The ... ...

Abstract	This study assesses the behaviour of self-compacting geopolymer concrete (SCGC) with and without recycled concrete aggregates (RCA) by studying the rheological, mechanical and durability properties and comparison with self-compacting concrete (SCC). The idea of using RCA in geopolymer is to attain sustainable development goals, i.e., with less carbon footprint and the use of waste materials such as fly ash and RCA. Two types of concretes were prepared, namely “self-compacting concrete (SCC)” and “self-compacting geopolymer concrete (SCGC)”. Using each concrete type, two design mixes were prepared. The first mix contained 100% natural coarse aggregates (NCA), whereas, in the second mix, 30% NCA were replaced with RCA. The result of rheological properties indicated that the viscosity, passing ability, and segregation results of SCC and SCGC mixes were higher when NCA was partially replaced with RCA. Results of mechanical properties indicated that the increase in the compressive strength of the control mix of SCC (denoted as SCC-0) and SCGC mix (denoted as SCGC-0) at 28 days was 38.3% and 33.1% higher than those containing 30% RCA (denoted as SCC-30 and SCGC-30), respectively. The percentage increase in the compressive strength of SCC-0 and SCC-30 mixes was 20.24% and 13.45% higher compared to SCGC-0 and SCGC-30 mixes. The increase in the split tensile strength of SCC-0 and SCC-30 mixes was 9% and 21.74% higher than SCGC-0 and SCGC-30 mixes. The split tensile strength of control mixes SCC-0 and SCGC-0 is 47.73% and 55% higher than SCC-30 and SCGC-30 at 28 days, respectively. Durability performance of SCC and SCGC mixes was investigated by performing hydraulic permeability, accelerated carbonation, half-cell potential and pull-out tests at 28, 90, 180, 365, and 720 days, and were found inferior for SCGC mixes. The water penetration depth of SCGC-0 and SCGC-30 mixes was 5.71% to 16.1% and 10% to 18.6% higher than SCC-0 and SCC-30 mixes at 28 to 720 days. The carbonation depth in SCGC-0 and SCGC-30 mixes was 8.11% to 20.83% and 7.89% to 13.73% higher than SCC-0 and SCC-30 mixes at 28 to 720 days. The half-cell potential difference results for SCGC-0 and SCGC-30 mixes were 27.5% to 50% and 8.3% to 16.41% higher than SCC-0 and SCC-30 mixes at 28 to 720 days. The pull-out strength of SCC-0 and SCC-30 mixes was 11.36% to 29.5% and 8.3% to 38.97% higher than SCGC-0 and SCGC-30 mixes at 28 to 720 days, respectively. Overall, the mechanical and durability properties of SCC mixes were better than SCGC at the same exposure period.
Keywords	sustainability ; mechanical properties ; durability properties ; natural coarse aggregate (NCA) ; recycled concrete aggregates (RCA) ; self-compacting concrete (SCC) ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	690
Language	English
Publishing date	2021-08-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Adolopment of clinical practice guidelines and creation of referral pathways for psychiatric conditions in Pakistan.

Pervez, Alina / Bukhari, Muhammad Murtaza / Chhapra, Rijah / Baig, Meryum Ishrat / Martins, Russell Seth / Pirzada, Sonia / Rizvi, Nashia Ali / Aamdani, Salima Saleem / Ayub, Bushra / Rehman, Alina Abdul / Mustafa, Mohsin Ali / Nadeem, Sarah / Asad, Nargis / Haider, Adil H / Nadeem, Tania

The Lancet regional health. Southeast Asia

2024 Volume 23, Page(s) 100387

Abstract: Psychiatric disorders are highly prevalent in Pakistan and burdens the scarce number of psychiatrists present in the country. The establishment of evidence-based clinical practice guidelines (EBCPGs) and primary-care referral pathways within the local ... ...

Abstract	Psychiatric disorders are highly prevalent in Pakistan and burdens the scarce number of psychiatrists present in the country. The establishment of evidence-based clinical practice guidelines (EBCPGs) and primary-care referral pathways within the local context is imperative to make the process efficient. In this Health Policy, we aimed to develop EBCPGs and primary-care referral pathways that are specific to Pakistan's primary-care setting, with the aim of facilitating the management of psychiatric conditions. Ten EBCPGs were created through the GRADE-ADOLOPMENT process; two recommendations were adopted with minor changes, 43 were excluded, and all others were adopted without any changes. Ten primary-care referral pathways for managing ten psychiatric disorders were created and 23 recommendations were added which will help to bridge the gap in care provision. These psychiatric referral pathways and EBCPGs will bring Pakistan's healthcare system a step closer to achieving optimal health outcomes for patients.
Language	English
Publishing date	2024-03-10
Publishing country	England
Document type	Journal Article ; Review
ISSN	2772-3682
ISSN (online)	2772-3682
DOI	10.1016/j.lansea.2024.100387
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Viral infections in Pakistan: prevalence, factors affecting spread, and recommendations for control.

Naseem, Zehra / Ayub, Maaha / Shah, Sharaf Ali / Ali, Syed Asad / Abidi, Syed Hani

Journal of infection in developing countries

2022 Volume 16, Issue 6, Page(s) 913–926

Abstract: Pakistan is endemic to a number of viral infections, owing to its humid climate, topographical variation, soaring population, and lack of education and awareness. These viruses may have several different modes of transmission, including respiratory or ... ...

Abstract	Pakistan is endemic to a number of viral infections, owing to its humid climate, topographical variation, soaring population, and lack of education and awareness. These viruses may have several different modes of transmission, including respiratory or airborne transmission, sexual transmission, blood-borne, fecal-oral transmission, vector-borne transmission, and transmission following an organ transplant. Although several different microorganisms are responsible for causing these infections, a few viruses are found more commonly in Pakistan and are primarily responsible for causing infections. In this study, we present a review of the most recent studies on different viruses, transmitted through various transmission routes, found commonly in Pakistan, along with the prevalence of each, and recommend control measures required against these viruses.
MeSH term(s)	Humans ; Pakistan/epidemiology ; Prevalence ; Virus Diseases/epidemiology ; Virus Diseases/prevention & control ; Viruses
Language	English
Publishing date	2022-06-30
Publishing country	Italy
Document type	Journal Article ; Review ; Research Support, Non-U.S. Gov't
ZDB-ID	2394024-4
ISSN	1972-2680 ; 2036-6590
ISSN (online)	1972-2680
ISSN	2036-6590
DOI	10.3855/jidc.15078
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article: Enhancing biogas production through co-digestion and thermal pretreatment of wheat straw and sunflower meal

Rajput, Asad Ayub / Zeshan / Hassan, Muhammad

Renewable energy. 2021 May, v. 168

2021

Abstract: High carbon to nitrogen ratio and complex lignocellulosic structure of wheat straw (WS) are the main hindrances in anaerobic digestion of this substrate. This research, conducted in two experiments, focused on the combined effect of co-digestion and ... ...

Abstract	High carbon to nitrogen ratio and complex lignocellulosic structure of wheat straw (WS) are the main hindrances in anaerobic digestion of this substrate. This research, conducted in two experiments, focused on the combined effect of co-digestion and thermal pretreatment of WS and sunflower meal (SM) on biogas production. In the first experiment, five co-digestion mixtures of WS and SM were made and assessed for biogas production. In the second experiment, the optimum co-digestion mixture selected from the first experiment was thermally pretreated at 120, 140, 160 and 180 °C and was evaluated for biogas production. Compared to control, the mixture M5 produced 61% higher biogas. It also showed better buffering capacity as compared to other mixtures and control. Combined effect of co-digestion and thermal pretreatment of the same mixture at 180 °C increased biogas yield by 94.3% as compared to control. Moreover, the experimental data obtained from both the experiments were validated using three different non-linear kinetic models.
Keywords	anaerobic digestion ; biogas ; carbon nitrogen ratio ; gas production (biological) ; lignocellulose ; sunflower meal ; wheat straw
Language	English
Dates of publication	2021-05
Size	p. 1-10.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2001449-1
ISSN	1879-0682 ; 0960-1481
ISSN (online)	1879-0682
ISSN	0960-1481
DOI	10.1016/j.renene.2020.11.149
Database	NAL-Catalogue (AGRICOLA)

Order via subito

Article ; Online: Estimating the frequency of inpatient adverse events using a two-step retrospective chart review: a study protocol.

Ul Hassan, Syed Sabih / Asif, Fozia / Haque, Ghazal / Ayub, Farwa / Munir, Tahir / Khan, Fauzia / Siddiqi, Sameen / Latif, Asad

BMJ open

2023 Volume 13, Issue 12, Page(s) e076971

Abstract: Introduction: Adverse events are a major cause of patient harm in the hospitalised setting. Low-income and middle-income countries account for a disproportionate share of the global burden of adverse events. However, patient safety research is still ... ...

Abstract	Introduction: Adverse events are a major cause of patient harm in the hospitalised setting. Low-income and middle-income countries account for a disproportionate share of the global burden of adverse events. However, patient safety research is still centred around high-income countries and high-resource health systems. The methods and data produced from these efforts are ill-suited to low-income and middle-income systems due to the social and technical differences between these settings. We aim to use our pilot-tested, locally developed methodology to estimate the frequency and characteristics of adverse events in hospitalised patients in a lower-middle-income country to inform patient safety policies and initiatives. Methods and analysis: This multi-centre study will employ a two-step chart review methodology to identify adverse events in a representative sample of patients admitted at five hospitals between 1 January 2019 and 31 December 2019. The first step will include assessing patient files against a list of triggers to detect adverse events and the second step will involve an in-depth review of the events to capture pertinent characteristics. The triggers have been adapted from validated tools used in other studies. The reviewing team will be trained on the use of research tools and operational definitions to ensure that data are collected uniformly. The main outcome of interest is the rate at which adverse events occur in hospitalised patients. Further analysis will look to identify and quantify associations between the main outcome of interest and a variety of variables such as patient age and gender using tests of independence and regression techniques. Ethics and dissemination: This study protocol has been approved by the Ethics Review Committee at Aga Khan University (Reference number: 2023-6324-24566). The findings of this study will be published in a peer-reviewed journal and disseminated to the public through national and international conferences, workshops, websites and social media.
MeSH term(s)	Humans ; Retrospective Studies ; Inpatients ; Research Design ; Patient Safety ; Income ; Multicenter Studies as Topic
Language	English
Publishing date	2023-12-06
Publishing country	England
Document type	Journal Article
ZDB-ID	2599832-8
ISSN	2044-6055 ; 2044-6055
ISSN (online)	2044-6055
ISSN	2044-6055
DOI	10.1136/bmjopen-2023-076971
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article: Assessment of Patient Safety in a Low-Resource Health Care System: Proposal for a Multimethod Study.

Haque, Ghazal / Asif, Fozia / Ahmed, Fasih Ali / Ayub, Farwa / Syed, Sabih Ul Hassan / Pradhan, Nousheen Akber / Hameed, Malika / Siddiqui, Muhammad Muneeb Ullah / Mahmood, Shafaq / Zaidi, Tahani / Siddiqi, Sameen / Latif, Asad

JMIR research protocols

2024 Volume 13, Page(s) e50532

Abstract: Background: The high prevalence of adverse events (AEs) globally in health care delivery has led to the establishment of many guidelines to enhance patient safety. However, patient safety is a relatively nascent concept in low- and middle-income ... ...

Abstract	Background: The high prevalence of adverse events (AEs) globally in health care delivery has led to the establishment of many guidelines to enhance patient safety. However, patient safety is a relatively nascent concept in low- and middle-income countries (LMICs) where health systems are already overburdened and underresourced. This is why it is imperative to study the nuances of patient safety from a local perspective to advocate for the judicious use of scarce public health resources. Objective: This study aims to assess the status of patient safety in a health care system within a low-resource setting, using a multipronged, multimethod approach of standardized methodologies adapted to the local setting. Methods: We propose purposive sampling to include a representative mix of public and private, rural and urban, and tertiary and secondary care hospitals, preferably those ascribed to the same hospital quality standards. Six different approaches will be considered at these hospitals including (1) focus group discussions on the status quo of patient safety, (2) Hospital Survey on Patient Safety Culture, (3) Hospital Consumer Assessment of Healthcare Providers and Systems, (4) estimation of incidence of AEs identified by patients, (5) estimation of incidence of AEs via medical record review, and (6) assessment against the World Health Organization's Patient Safety Friendly Hospital Framework via thorough reviews of existing hospital protocols and in-person surveys of the facility. Results: The abovementioned studies collectively are expected to yield significant quantifiable information on patient safety conditions in a wide range of hospitals operating within LMICs. Conclusions: A multidimensional approach is imperative to holistically assess the patient safety situation, especially in LMICs. Our low-budget, non-resource-intensive research proposal can serve as a benchmark to conduct similar studies in other health care settings within LMICs. International registered report identifier (irrid): PRR1-10.2196/50532.
Language	English
Publishing date	2024-03-27
Publishing country	Canada
Document type	Journal Article
ZDB-ID	2719222-2
ISSN	1929-0748
ISSN	1929-0748
DOI	10.2196/50532
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article: An approximate analytical solution of the Allen-Cahn equation using homotopy perturbation method and homotopy analysis method.

Hussain, Safdar / Shah, Abdullah / Ayub, Sana / Ullah, Asad

Heliyon

2019 Volume 5, Issue 12, Page(s) e03060

Abstract: In this paper, an approximate analytical solution of the bistable Allen-Cahn equation is given. The Allen-Cahn equation is a mathematical model to study the phase separation process in binary alloys and emerged as a convection-diffusion equation in fluid ...

Abstract	In this paper, an approximate analytical solution of the bistable Allen-Cahn equation is given. The Allen-Cahn equation is a mathematical model to study the phase separation process in binary alloys and emerged as a convection-diffusion equation in fluid dynamics or reaction-diffusion equation in material sciences. A phase transition occurs at the interface when one material changes its composition or structure. The homotopy perturbation method and homotopy analysis method are used for finding the approximate solution. These methods don't need the use of any transformation, discretization, unrealistic restriction and assumption. The error estimates are computed by comparing with a numerical method, and a good agreement is observed.
Language	English
Publishing date	2019-12-18
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2019.e03060
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Exploring medical and nursing students' perceptions about a patient safety course: a qualitative study.

Ayub, Farwa / Afzal, Noreen / Ali, Wajid / Asif, Fozia / Ul Hassan, Syed Sabih / Haque, Ghazal / Ahmed, Fasih Ali / Ajani, Khairulnissa / Tharani, Zahra / Jaffer, Mehtab / Haider, Adil H / Aboumatar, Hanan J / Latif, Asad

BMC medical education

2024 Volume 24, Issue 1, Page(s) 452

Abstract: Background: Educating health professionals on patient safety can potentially reduce healthcare-associated harm. Patient safety courses have been incorporated into medical and nursing curricula in many high-income countries and their impact has been ... ...

Abstract	Background: Educating health professionals on patient safety can potentially reduce healthcare-associated harm. Patient safety courses have been incorporated into medical and nursing curricula in many high-income countries and their impact has been demonstrated in the literature through objective assessments. This study aimed to explore student perceptions about a patient safety course to assess its influence on aspiring health professionals at a personal level as well as to explore differences in areas of focus between medical and nursing students. Methods: A dedicated patient safety course was introduced for year III medical and year II and IV nursing students at the Aga Khan University (2021-2022). As part of a post-course assessment, 577 participating students (184 medical and 393 nursing) wrote reflections on the course, detailing its influence on them. These free-text responses were thematically analyzed using NVivo. Results: The findings revealed five major themes: acquired skills (clinical, interpersonal), understanding of medical errors (increased awareness, prevention and reduction, responding to errors), personal experiences with patient safety issues, impact of course (changed perceptions, professional integrity, need for similar sessions, importance of the topic) and course feedback (format, preparation for clinical years, suggestions). Students reported a lack of baseline awareness regarding the frequency and consequences of medical errors. After the course, medical students reported a perceptional shift in favor of systems thinking regarding error causality, and nursing students focused on human factors and error prevention. The interactive course format involving scenario-based learning was deemed beneficial in terms of increasing awareness, imparting relevant clinical and interpersonal skills, and changing perspectives on patient safety. Conclusions: Student perspectives illustrate the benefits of an early introduction of dedicated courses in imparting patient safety education to aspiring health professionals. Students reported a lack of baseline awareness of essential patient safety concepts, highlighting gaps in the existing curricula. This study can help provide an impetus for incorporating patient safety as a core component in medical and nursing curricula nationally and across the region. Additionally, patient safety courses can be tailored to emphasize areas identified as gaps among each professional group, and interprofessional education can be employed for shared learning. The authors further recommend conducting longitudinal studies to assess the long-term impact of such courses.
MeSH term(s)	Humans ; Patient Safety ; Students, Nursing/psychology ; Qualitative Research ; Students, Medical/psychology ; Curriculum ; Male ; Female ; Medical Errors/prevention & control ; Attitude of Health Personnel ; Saudi Arabia ; Clinical Competence
Language	English
Publishing date	2024-04-25
Publishing country	England
Document type	Journal Article
ZDB-ID	2044473-4
ISSN	1472-6920 ; 1472-6920
ISSN (online)	1472-6920
ISSN	1472-6920
DOI	10.1186/s12909-024-05348-8
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

To top

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito