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    Wyświetlanie 1-14 z 14
    Tytuł:
    A linearization-based hybrid approach for 3D reconstruction of objects in a single image
    Autorzy:
    Kotan, Muhammed
    Öz, Cemil
    Kahraman, Abdulgani
    Powiązania:
    https://bibliotekanauki.pl/articles/2055171.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    3D reconstruction
    shape from shading
    shape recovery
    image comparison
    surface inspection
    rekonstrukcja 3D
    odzyskiwanie kształtu
    porównywanie obrazów
    inspekcja powierzchni
    Opis:
    The shape-from-shading (SFS) technique uses the pattern of shading in images in order to obtain 3D view information. By virtue of their ease of implementation, linearization-based SFS algorithms are frequently used in the literature. In this study, Fourier coefficients of central differences obtained from gray-level images are employed, and two basic linearization-based algorithms are combined. By using the functionally generated surfaces and 3D reconstruction datasets, the hybrid algorithm is compared with linearization-based approaches. Five different evaluation metrics are applied on recovered depth maps and the corresponding gray-level images. The results on defective sample surfaces are also included to show the effect of the algorithm on surface reconstruction. The proposed method can prevent erroneous estimates on object boundaries and produce satisfactory 3D reconstruction results in a low number of iterations.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2021, 31, 3; 501--513
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A nested autoencoder approach to automated defect inspection on textured surfaces
    Autorzy:
    Oz, Muhammed Ali Nur
    Kaymakci, Ozgur Turay
    Mercimek, Muharrem
    Powiązania:
    https://bibliotekanauki.pl/articles/2055170.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    autoencoder
    defect detection
    automatic visual inspection
    deep learning
    autoenkoder
    wykrywanie defektów
    inspekcja wizyjna
    inspekcja automatyczna
    uczenie głębokie
    Opis:
    In recent years, there has been a highly competitive pressure on industrial production. To keep ahead of the competition, emerging technologies must be developed and incorporated. Automated visual inspection systems, which improve the overall mass production quantity and quality in lines, are crucial. The modifications of the inspection system involve excessive time and money costs. Therefore, these systems should be flexible in terms of fulfilling the changing requirements of high capacity production support. A coherent defect detection model as a primary application to be used in a real-time intelligent visual surface inspection system is proposed in this paper. The method utilizes a new approach consisting of nested autoencoders trained with defect-free and defect injected samples to detect defects. Making use of two nested autoencoders, the proposed approach shows great performance in eliminating defects. The first autoencoder is used essentially for feature extraction and reconstructing the image from these features. The second one is employed to identify and fix defects in the feature code. Defects are detected by thresholding the difference between decoded feature code outputs of the first and the second autoencoder. The proposed model has a 96% detection rate and a relatively good segmentation performance while being able to inspect fabrics driven at high speeds.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2021, 31, 3; 515--523
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of meteorological drought in Sokoto State for the past four decades (1970-2009)
    Autorzy:
    Dogondaji, M.B.
    Muhammed, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/11305.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    Meteorological drought disaster is a serious problem in the Sahelian region of the world. This strongly affects the hydrology of the region and creates severe constraint to agriculture and water management. This paper therefore, examines the rainfall characteristics and the extent of meteorological drought in Sokoto state, Nigeria. Daily rainfall data were obtained for a period of four decades (1970-2009) from Nigerian Meteorological Agency (NIMET) through Sultan Abubakar III International Airport, Sokoto Synoptic Station. Data collected were analysed using statistical techniques. The result of the descriptive statistics varies from year to year and slight increase of mean monthly rainfall was observed. Standardized Precipitation Index (SPI) and Rainfall Anomaly Index (RAI) were used in classifying drought severity into severe, moderate and mild conditions. The result is already anticipated since Sokoto State lies within the Sudano-Sahelian region that generally known to be draught prone. Recommendations were offered based on the outcome of the result.
    Źródło:
    International Letters of Natural Sciences; 2014, 15, 1
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design, Efficient Synthesis, Mechanism of Reaction and Antiproliferative Activity Against Cancer And Normal Cell Lines of A Novel Class of Fused Pyrimidine Derivatives
    Autorzy:
    roaiah, hanaa F.
    Rashdan, Huda R.
    soliman, abdelmohsen
    Muhammed, Zeinab
    Wietrzyk, Joanna
    Milczarek, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/895705.pdf
    Data publikacji:
    2018-06-30
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    anticancer activity
    antiproliferative activity
    Coumarin
    Fused pyrimidines
    3-triazole
    Opis:
    This work concentrated on the utility of hydrazonoyl halides in synthesis of bioactive heterocycles like triazoles, pyrazoles, pyrimidines and their fused derivatives which have a wide spectrum of pharmaceutical value. Herein we discussed the synthesis of new heterocyclic compounds containing fused pyrimidine rings derived from hydrazonoyl halides and their significant pharmaceutical importance as anticancer agents. New fused pyrimidine derivatives bearing 1,2,3-triazole moiety were prepared via reaction of enaminone 2 with and 6-amino-2-thioxo-pyrimidin-4-one and then with hydrazonoyl chlorides 6a-h. In addition 3-amino-6-(2-oxo-2H-chromen-3-yl)pyridine-2-carbonitrile (12) was submitted to react with carbon dioxide to afford 3-(1,2,3,4-tetrahydro-2,4-dithioxopyrido[2,3-d]pyrimidin-7-yl)-2H-chromen-2-one (15), which act as key molecule for synthesis of new series of fused prymidinethione derivatives containing coumarine moiety via its reaction with different selected derivatives of hydrazonoyl halides 6a-h. Structures of the newly synthesized compounds were confirmed using spectral data (IR, H1NMR and Mass spectrometry) and microanalytical methods. Also, they screened for their anticancer activity.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 3
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determinants of yield gap in rainfed and irrigated rice production systems – evidence from household survey in Kwara State, Nigeria
    Uwarunkowania poziomu plonów ryżu w uprawach nawadnianych naturalnie i sztucznie – na podstawie badań przeprowadzonych w stanie Kwara w Nigerii
    Autorzy:
    Babatunde, R.O.
    Salami, M.F.
    Muhammed, B.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/43838.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
    Tematy:
    rice
    agricultural production
    yield gap
    rainfed condition
    irrigated production
    production system
    household
    Kwara State
    Nigeria
    Opis:
    The actual yield of rice in Nigeria has not been able to reach its potential. Consequently, the cost of rice importation is alarming. However, rice yield varies under various production systems. Therefore, this study examines the determinants of yield gap in rainfed and irrigated rice production systems in Kwara state, Nigeria. Gross Margin Budgetary analysis, Stochastic Frontier, and Linear Regression Model were respectively used to estimate the profitability, technical efficiency, and determinants of yield gap in both production systems. The result shows that rice production is more profitable and efficient under the irrigated rice production system than the rainfed rice production system. It was also discovered that the significant determinants of yield gap in both production systems vary. However, the size of farm cultivated and the rice variety planted are common significant determinants of yield gap in both systems. This research therefore recommends that irrigation facilities and improved rice variety should be made available to farmers. Additionally, policy makers should formulate policies that would enable rice farmers to have access to larger farm lands.
    Rzeczywista wydajność produkcji ryżu w Nigerii odbiega od potencjału, jakim dysponuje ten kraj, przez co koszty importu tego zboża osiągają alarmujący poziom. Wielkość plonów waha się jednak w zależności od zastosowanego systemu produkcji. Niniejsze badanie dotyczy zatem uwarunkowań wydajności w nawadnianych naturalnie (deszczem) i sztucznie nawadnianych uprawach ryżu w nigeryjskim stanie Kwara. Do oszacowania rentowności, efektywności technicznej i uwarunkowań skutkujących niedostateczną wydajnością w obu systemach produkcji wykorzystano odpowiednio budżetową analizę marży brutto, stochastyczną analizę graniczną oraz model regresji liniowej. Jak pokazują wyniki, systemy produkcji ryżu oparte na sztucznym nawadnianiu charakteryzują się większą rentownością i efektywnością niż uprawy nawadniane naturalnie. Ponadto ustalono, że oba systemy produkcji różnią się pod względem istotnych uwarunkowań skutkujących luką w wielkości plonów. Zaobserwowano także uwarunkowania wspólne dla obu systemów – są nimi wielkość gospodarstwa rolnego i uprawiana odmiana ryżu. Na podstawie niniejszego badania można zatem zalecić, aby rolnikom zostały udostępnione urządzenia nawadniające i udoskonalone odmiany ryżu w odpowiednim zakresie i we właściwych terminach. Ponadto decydenci polityczni powinni opracować strategie, które umożliwią producentom ryżu dostęp do gospodarstw o większej powierzchni.
    Źródło:
    Journal of Agribusiness and Rural Development; 2017, 43, 1
    1899-5241
    Pojawia się w:
    Journal of Agribusiness and Rural Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    How does it feel to be a problem? The Diasporic Identity of the Homeless
    Autorzy:
    Asadi, Muhammed
    Powiązania:
    https://bibliotekanauki.pl/articles/2106916.pdf
    Data publikacji:
    2013-01-31
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    Homelessness
    Capitalism
    Culture
    Identity
    Inequality
    Poverty
    Opis:
    In this paper I uncover the identity response of the homeless to structural constraints that are facilitated through objectively produced and mass mediated culture. After an initial period of “liberation,” physical deprivation leads the homeless to seek institutionalized help. The “homeless” category constructed by the shelter industry absolves the system of blame and obfuscates the systemic roots of homelessness. In their picking and dropping of identities, and negotiations of meaning without any referential space to root themselves in, the homeless reveal to us the cultural tragedy of the present that affects us all due to rapid social change inherent in advanced capitalism.
    Źródło:
    Qualitative Sociology Review; 2013, 9, 1; 76-93
    1733-8077
    Pojawia się w:
    Qualitative Sociology Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inexorable Carbon Capture & Sequestration and its Indian Scenario
    Autorzy:
    Thaslim, K. A. Muhammed
    Johnson, Jeffy
    Powiązania:
    https://bibliotekanauki.pl/articles/1191237.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CCS
    Carbon Capture; Carbon sequestration; Climate change; Carbon footprint; Environmnet
    GHG emissions
    Opis:
    The drastic increase in the emission of CO2 (carbon dioxide) during the last 30 years caused by fossil fuel combustion has been identified as the major reason for the climate change. Demand for fossil fuels has begun to decline in the developed world, however, demand in developing countries has been rising and will continue to rise. India in its developing phase has been risen as one of the major emitting nations since they hugely rely on fossil fuels. And opting alternate energy sources wouldn’t suffice for meeting the obligatory values of emission. While the global frameworks for climate change demands for limiting the temperature rise within 2 °C, more mitigation technologies other than renewable energy and energy efficiency are searched for, where Carbon Capture & Sequestration pitch in. In this paper we discuss about the capacity of CCS as a climate mitigation tool and additionally evaluates the feasibility of implementation in Indian market.
    Źródło:
    World Scientific News; 2016, 54; 110-131
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lived Experiences of Companions of COVID-19 Patients Admitted to COVID-19 Hospitals: a Retrospective Cross-Sectional Study
    Doświadczenia bliskich pacjentów z COVID-19 przyjętych do szpitali pandemicznych: retrospektywne badanie przekrojowe
    Autorzy:
    Abdulah, Deldar Morad
    Mirza, Abbas Muhammed Sadiq
    Hassan, Zeravan Asaad
    Powiązania:
    https://bibliotekanauki.pl/articles/31341064.pdf
    Data publikacji:
    2024
    Wydawca:
    Akademia Bialska im. Jana Pawła II
    Tematy:
    satisfaction
    mental health
    environment
    communication
    behavior
    zadowolenie
    zdrowie psychiczne
    środowisko
    komunikacja
    zachowanie
    Opis:
    Background. Due to the lack of evidence, the positive and negative experiences of companions of COVID-19 patients during their communication with medical staff in COVID-19 hospitals were explored. Material and methods. This research study encompassed a cross-sectional analysis of 437 companions of COVID-19 patients. Results. The patients’ diseases were: mild (34.55%), moderate (27.92%), severe (20.14%), and critical (17.39%). The most prevalent comorbidities were cardiovascular disease (16.7%), obesity (16.48%), endocrine and metabolic disorders (14.42%), and smoking (13.73%). Out of the total of 437 patients included in the study, 23.80% died. The study revealed that 79.63% and 71.40% of companions had regular communication with the medical staff, and received relevant and sufficient information about the patients’ medical conditions, respectively. Regarding mental health, 34.55% of companions reported fear of COVID-19 infection at the hospitals, and 66.59% expressed fear of patients’ death. A considerable percentage had conflicts with medical staff. They expressed satisfaction with the healthcare and treatment and were informed and medical staff were available on need. The hospital environment was quiet, but not in terms of psychological well-being. Conclusions. Most companions were satisfied with treatment procedures at the COVID-19 hospitals, but a percentage were affected by ambient noise and other patients’ fear.
    Wprowadzenie. Biorąc pod uwagę brak stosownych danych, przyjrzano się pozytywnym oraz negatywnym doświadczeniom bliskich towarzyszących pacjentom chorującym na COVID-19 przyjętych do szpitali zajmujących się leczeniem tej choroby w kontekście komunikacji z pracownikami ochrony zdrowia zatrudnionymi w tych szpitalach. Materiał i metody. Opracowanie stanowi przekrojową analizę przeprowadzoną na próbie bliskich 437 pacjentów chorujących na COVID-19. Wyniki. Przyjmowani pacjenci cierpieli na łagodną (34,55%), umiarkowaną (27,92%), ciężką (20,14%) i krytyczną (17,39%) postać choroby. Najczęściej występującymi chorobami współistniejącymi wśród pacjentów były choroby układu krążenia (16,7%), otyłość (16,48%), zaburzenia endokrynologiczne i metabolizmu (14,42%) oraz uzależnienie od tytoniu (13,73%). Spośród 437 pacjentów objętych badaniem 23,80% zmarło. Wyniki badań wskazują, że 79,63% bliskich pacjentów regularnie kontaktowało się z pracownikami ochrony zdrowia, 71,40% otrzymywało stosowne i wyczerpujące informacje na temat ich stanu zdrowia. Z punktu widzenia zdrowia psychicznego, 34,55% respondentów wspomniało o obawach przed zakażeniem COVID-19 w szpitalach, 66,59% obawiało się śmierci przyjętych do szpitali pacjentów. Znaczący odsetek bliskich pacjentów wszedł w różne konflikty z personelem szpitali. Ponadto respondenci opisywali zadowolenie z opieki, jaką szpitale otoczyły pacjentów oraz z zastosowanego leczenia, a także z dostępności pracowników ochrony zdrowia w razie potrzeby. Spokój i cisza panująca w szpitalach nie sprzyjała dobrostanowi psychicznemu badanych. Wnioski. Większość bliskich pacjentów była zadowolona ze sposobu leczenia stosowanego w szpitalach zajmujących się COVID-19, jednak część z nich doświadczyła hałasu w otoczeniu oraz odczuwała wpływ strachu i lęku innych pacjentów.
    Źródło:
    Health Problems of Civilization; 2024, 18, 1; 43-54
    2353-6942
    2354-0265
    Pojawia się w:
    Health Problems of Civilization
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Novaluron and indoxacarb induced methemoglobinemia – unveiling a rare poisoning
    Autorzy:
    Shaji, Ijas Muhammed
    Mohanty, Chitta Ranjan
    Radhakrishnan, Rakesh Vadakkethil
    Siddique, Ruby Nahan
    Powiązania:
    https://bibliotekanauki.pl/articles/40614538.pdf
    Data publikacji:
    2024-06-30
    Wydawca:
    Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
    Tematy:
    emergency department
    indoxacarb
    methemoglobinemia
    novaluron
    poisoning
    Opis:
    Introduction and aim. In India, the utilization of agricultural pesticides for intentional self-poisoning is a prevalent method, and it is associated with substantially higher fatality rates compared to other self-poisoning approaches. Plethora, an agricultural insecticide containing novaluron (5.25%) and indoxacarb (4.5%), has recently been introduced and widely used in India and various other regions for its broad-spectrum lepidopteran control. While there have been documented cases of isolated self-poisoning involving indoxacarb, there is currently no literature reporting incidents of human poisoning specifically related to novaluron. Description of the case. An 83-Year-old male was presented to the emergency department (ED) with a history of consumption of 50 mL of an insecticide suspension concentrate called ‘PLETHORA’ to commit suicide. He had one episode of vomiting and dizziness after the ingestion. There was associated cyanosis, and the patient was put on high-flow oxygen at 10 L/min through a face mask. The patient was diagnosed to have methemoglobinemia and was successfully treated with methylene blue and ascorbic acid. One hour post methylene blue injection showed a methemoglobin level of 1%, and the patient gradually improved. Patients presenting with novaluron and indoxacarb poisoning require supportive treatment as there is no specific antidote. There should be a high index of suspicion for methemoglobinemia in such patients, and timely management is necessary to prevent further complications. The patient was successfully managed and discharged after the 3rd day of admission. Conclusion. The management of patients with novaluron and indoxacarb poisoning primarily involves supportive care, as there is currently no specific antidote available for these substances. Maintaining a high suspicion index for the development of methemoglobinemia and timely management of other complications is crucial for the best possible patient outcomes.
    Źródło:
    European Journal of Clinical and Experimental Medicine; 2024, 22, 2; 448-451
    2544-2406
    2544-1361
    Pojawia się w:
    European Journal of Clinical and Experimental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on the activity of ZnO-SnO2 nanocomposite against bacteria and fungi
    Autorzy:
    Omar, K.
    Meena, B. I.
    Muhammed, S. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/109343.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    ZnO-SnO2 nanocomposite
    bacteria
    fungi
    sol-gel method
    Opis:
    ZnO-SnO2 nanocomposite was prepared by the sol-gel method. The as-prepared nanocomposite was characterized by X-ray diffraction (XRD), scanning electron micrograph (SEM-EDX), FTIR and UV-Visible spectrometer analysis techniques. The average particle size of nanocomposite was calculated from the XRD study. The average particle size of the prepared nanocomposite was 22 nm. According to the UV-Visible spectrum, the band gap value of 5.06 eV was obtained for the ZnO-SnO2nanocomposite. From the analysis techniques it was found that the metal oxides of ZnO-SnO2 mainly consist of ZnO and SnO2 metal oxides. The antibacterial and antifungal activities of the ZnO-SnO2nanocomposite were studied against Staphylococcus aureus (ATCC25923), Listeria monocytogenes (ATCC 11994)(Gram-positive), Salmonella typhi (ATCC14028), Escherichia coli (ATCC 25922)Gram-negative), Candida albicans (ATCC10231), and Aspergillus niger (ATCC 16404) (fungi)by two methods through the turbidity method or reading optical density and inhibition zone, which were carried out in the absence of irradiation. We observed an effective antibacterial and antifungal activity of the ZnO-SnO2 nanocomposite against bacteria and fungi.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2016, 52, 2; 754-766
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sustainability reporting – Its then, now and the emerging next!
    Autorzy:
    Thaslim, K. A. Muhammed
    Antony, Aksa Rose
    Powiązania:
    https://bibliotekanauki.pl/articles/1190134.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    IIRC
    Digitalization of Sustainability Report
    Sustainability Reporting
    CSR
    GRI
    Integrated Reporting
    Opis:
    Sustainability report is the gathering of sustainability information in a systematic and presentable way such that an easy comparison with the past and progress concerning the target is possible, for the improvement in environmental, social and economic aspects of the company. The nature of sustainability information has witnessed a tremendous variation reflecting the changing political and environmental scenario. Last three decades has witnessed the inception of different non-governmental organisations striving for sustainability, frameworks for sustainability reports and changing formats of reporting. Altogether sustainability reporting has now became a brand tag, believed to have improving the reputation of the company among the stakeholders. Further opportunities have invited business models in sustainability resulted in top consulting firms and hundreds of new companies working towards it. With the fast moving world and more competition, sustainability reporting is experiencing shift in trends and experimentation which has invited great responsiveness of companies as well as stakeholders. This paper is a journey through the routes sustainability reporting has already covered, and exploring the paths of journey ahead.
    Źródło:
    World Scientific News; 2016, 42; 24-40
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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