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    Wyświetlanie 1-9 z 9
    Tytuł:
    Seismic vulnerability functional method for rapid visual screening of existing buildings
    Autorzy:
    Yadollahi, M.
    Adnan, A.
    Zin, R. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/230200.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    redukcja ryzyka
    wrażliwość sejsmiczna
    budynek
    obrazowanie szybkie
    risk reduction
    seismic vulnerability
    rapid visual screening
    building
    Opis:
    Rapid Visual Screening (RVS) method for buildings was originally developed by the Applied Technology Council (ATC) in the late 1980’s for potential seismic hazards. This is a simple and almost a quick way of assessing the building seismic vulnerability score based on visual screening. The logarithmic relationship between final score and the probability of collapse at the maximum considered earthquake (MCE) makes results somewhat difficult to interpret, especially for less technical users. This study is developed to improve the simplicity and usefulness of RVS methodology to determine the numeric scores for seismic vulnerability of buildings using vulnerability functional form. The proposed approach applies the existing method in FEMA 154 (2002) for calculating the building rank based on RVS method. In this study RVS scores are used to evaluate populations of buildings to prioritize detailed evaluations and seismic retrofits. The alternate non-logarithmic format of scoring scheme is much better meeting the needs of the project managers and decision makers, as they require results that are easier to understand. It shows the linear equivalent of RVS final scores which is consistent with the existing ranking systems used in the buildings management program such as budget allocation decision making. The results demonstrate that the weight determined for the factor of “Region Seismicity”, which is 0.4033, has the highest contribution to seismic vulnerability scores of buildings. The applicability of the proposed method is demonstrated through a hypothetical example to rank ten seismically vulnerable buildings.
    Źródło:
    Archives of Civil Engineering; 2012, 58, 3; 363-377
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of GDP, spending on R&D, the number of universities and scientific journals on research publications in environmental sciences in the Middle East
    Autorzy:
    Meo, Sultan A.
    Al Masri, Abeer A.
    Usmani, Adnan M.
    Halepoto, Dost M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2179074.pdf
    Data publikacji:
    2013-10-01
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    bibliometric indicators
    financing science
    expenditures on science
    research publications
    Middle East
    Opis:
    Objectives: This study aimed to assess the impact of the Gross Domestic Product (GDP), spending on Research and Development (R&D), the number of universities and scientific journals on the published research documents, citable documents, citations per document and H-index in environmental sciences in the Middle East countries. Materials and Methods: All the 16 Middle East countries were included in the study. Information regarding the GDP, spending on R&D, the total number of universities and indexed journals was collected. Total number of research documents (papers), citable documents, citations per document and H-index in environmental sciences during the period 1996-2011 was recorded. The study used the World Bank, SCI-mago/Scopus, Web of Science, Journal Citation Reports (Thomson Reuters) as the main sources of information. Results: The mean GDP per capita of all the Middle East countries amounted to 18 125.49±5386.28 US$, spending on R&D was 0.63±0.28 US$, the number of universities equaled 36.56±11.33 and mean ISI indexed journals amounted to 8.25±3.93. The mean number of research documents published in environmental sciences in the Middle East countries during the period 1996-2011 was 2202.12±883.98; citable documents: 2156.87±865.09; citations per document: 8.74±0.73; and the H-index: 35.37±6.17. There was a positive correlation between the money spent on R&D and citations per documents (r = 0.6, p = 0.01), H-Index (r = 0.6, p = 0.01); the number of universities and a total of research documents (r = 0.65, p = 0.006), citable documents (r = 0.65, p = 0.006), H-Index (r = 0.50, p = 0.04), as well as ISI indexed journals and total research documents (r = 0.94, p = 0.0001), citable documents (r = 0.94, p = 0.0001), H-Index (r = 0.73, p = 0.001). Conclusions: The Middle East countries which spend more on R&D and which have a large number of universities and ISI indexed journals are likely to produce more significant volume of research papers in the field of environmental science.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2013, 26, 5; 702-709
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fusion splicing: the penalty of increasing the collapse length of the air holes in ESM-12B photonic crystal fibers
    Autorzy:
    Adnan, S. A.
    Abdulwahhab, A. W.
    Ismail, S.N.
    Powiązania:
    https://bibliotekanauki.pl/articles/174083.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    photonic crystal fiber
    PCF
    collapse length
    mode field diameter
    MFD
    fusion splicing
    guiding mechanisms
    Opis:
    For optimum fusion splicing process of a photonic crystal fiber, the collapsing of the air holes at any photonic crystal fiber is the key point of either increasing or decreasing the total splice loss. In this paper, an experimental study has been carried out to investigate the relation between total splice loss or total fiber attenuation due to splice loss and the length of the collapsed region of the air holes. This is done by splicing ESM-12B photonic crystal fiber between two equal lengths of single mode fibers and measuring the attenuation at different arc times and arc powers. The results showed that the increase in the length of the collapsed air holes region results in higher loss, therefore, higher fiber attenuation.
    Źródło:
    Optica Applicata; 2016, 46, 2; 265-275
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of the risk for human health of Enterovirus and Hepatitis A virus in clinical and water sources from three metropolitan cities of Pakistan
    Autorzy:
    Ahmad, T.
    Adnan, F.
    Nadeem, M.
    Kakar, S.J.
    Anjum, S.
    Saad, A.
    Waheed, A.
    Arshad, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/2081926.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    epidemiology
    Enterovirus (EntV)
    HAV
    PCR
    virology
    Opis:
    Introduction. Molecular studies have confirmed the silent circulation of enterovirus (EntV) and hepatitis A virus in the environment, even in the absence of clinical manifestation. Viral pathogens are among the major causes of disease outbreaks, particularly in the bigger cities and both in the developed and underdeveloped nations. Materials and method. Between June 2016 – June 2017, 97 samples of drinking water, river water polluted with sewage and blood were selected and obtained from high risk communities in Pakistan. Negatively charged membrane filters were used to concentrate the virus, followed by the use of specific PCR primers set for quick identification of the waterborne viruses. Results. Enteroviruses were recovered from 40%, 28.57% and 33.33% of river water polluted with sewage samples in Lahore, Islamabad and Rawalpindi, respectively, while the presence of 13.13% and 11.76% of viral load was also confirmed in the drinking water of Lahore and Rawalpindi, respectively. A high prevalence of HAV (12.5% and 21.05%) was also verified in the clinical samples. Phylogenetic analysis indicated close resemblance of HAV isolates with the Indian strains. This study is the first ever comparative analysis of the EntV and HAV isolated from environmental samples and clinical specimen on a molecular level. Conclusions. The parallel surveillance of EntV and HAV in the river water polluted with sewage, and clinical samples is quite helpful for controlling and reducing the disease burden of the waterborne illnesses.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2018, 25, 4; 708-713
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanisms to support open innovation in smart tourism destinations: managerial perspective and implications
    Mechanizmy wspierające otwarte innowacje w inteligentnych celach turystyki: perspektywa zarządzająca i implikacje
    Autorzy:
    Gusakov, Aleksandr A.
    Haque, Adnan Ul
    Jogia, Anjali Vijay
    Powiązania:
    https://bibliotekanauki.pl/articles/405520.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    destination management
    open innovation in tourism
    smart tourism destination
    platform-based business models
    open innovations platform
    zarządzanie miejscem docelowym
    otwarte innowacje w turystyce
    inteligentne miejsce docelowe turystyki
    oparte na platformie modele biznesowe
    platforma otwartych innowacji
    Opis:
    This paper examines the business systems in tourist regions that are predisposed to the formation of open innovation systems. The general assumption had been that analysis of the existing mechanisms to support open innovation in tourism and the identification of new trends had aim to do better the practice of managing tourist destinations. To investigate the research phenomenon, various sources of information including publications on innovations in tourism, websites of tourist centers, which are recognized as leaders in smart tourism, as well as sites of leading tourism companies were included. Using Cohen (2014) list, we considered the top 7 out of 15 top tourism destination cities in Europe via ‘mapping tourism strategy’ while two additional destinations in Europe were only used as case references. Furthermore, top eight travel companies of the Europe as case studies (sample size) for this study because these travel companies are mainly involved in the open innovation. This is a secondary study therefore content and construct validity in the selection of sources has been thoroughly examined. Findings reveal that authorities and businesses in smart tourist destinations, create incubators, accelerators, held hackathons. Previously, there was no conclusive evidence to explain by tourism management shall alter its traditional methods. This article formulates new arguments in favor of the fact that the management of tourist destinations should consider the fundamental changes in tourism due to digital transformation, the platform-based business models, and open innovations platforms.
    Niniejszy artykuł analizuje systemy biznesowe w regionach turystycznych, które są predysponowane do tworzenia otwartych systemów innowacji. Ogólnym założeniem było to, że analiza istniejących mechanizmów wspierania otwartych innowacji w turystyce i identyfikacja nowych trendów miały na celu usprawnienie praktyki zarządzania destynacjami turystycznymi. Aby zbadać zjawisko badawcze, uwzględniono różne źródła informacji, w tym publikacje na temat innowacji w turystyce, strony internetowe centrów turystycznych, które są uznawane za liderów inteligentnej turystyki, a także strony wiodących firm turystycznych. Korzystając z listy Cohena (2014), wzięliśmy pod uwagę 7 z 15 najlepszych miast turystycznych w Europie za pomocą „strategii turystyki mapowej”, a dwa dodatkowe miejsca docelowe w Europie wykorzystano jedynie jako referencje. Ponadto osiem najlepszych firm turystycznych w Europie jako studia przypadków (wielkość próby) w tym badaniu, ponieważ te firmy turystyczne są głównie zaangażowane w otwarte innowacje. Jest to badanie wtórne, dlatego treść i poprawność konstrukcji w wyborze źródeł została dokładnie zbadana. Wyniki pokazują, że władze i firmy w inteligentnych destynacjach turystycznych tworzą inkubatory, akceleratory, organizują hakatony. Wcześniej nie było przekonujących dowodów na to, że zarząd turystyki zmieni swoje tradycyjne metody. W tym artykule sformułowano nowe argumenty przemawiające za tym, że kierownictwo miejscowości turystycznych powinno rozważyć zasadnicze zmiany w turystyce wynikające z transformacji cyfrowej, opartych na platformie modeli biznesowych i platform otwartych innowacji.
    Źródło:
    Polish Journal of Management Studies; 2020, 21, 2; 142-161
    2081-7452
    Pojawia się w:
    Polish Journal of Management Studies
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Flow characteristics after installation of floating bridge in open channel
    Autorzy:
    Ibrahim, Mohamed M.
    Eltoukhy, Mahmoud A.R.
    Ghanim, Adnan D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1844336.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    floating bridges
    flow characteristics
    flume
    head loss
    velocity
    Opis:
    A pontoon bridge, also known as a floating bridge, can be used as for pedestrian and vehicle traffic. The buoyancy of the floating bridge limits the maximum load it can carry. This research included experimental runs to study variations of open channel flow characteristics upstream and downstream a floating bridge. Eighty one runs have been carried out using a flume in a hydraulic laboratory. The experimental run program is classified into two main categories; the first investigates the velocity ratios (vds/vus) downstream and upstream the floating bridge. The second category is concerned with the energy head losses (hL) due to the presence of a floating bridge. The experimental runs are carried out using three pontoon lengths, three flow depths, six submerged depths, and three discharges. The results are analysed and graphically presented to help predict hydraulic parameters. The outcomes have shown that the floating bridge upstream, Froude number and submergence of the pontoon are the dominant parameters that affect the studied flow characteristics.
    Źródło:
    Journal of Water and Land Development; 2021, 49; 244-251
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Policy reform in the education sector: Osun state as a case study (2011–2018)
    Autorzy:
    Ige, Richard A.
    Omodunbi, Olumide O.
    Omolade, Adnan S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1942924.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    policy
    education
    institution
    reform
    Osun
    Opis:
    Organizational, governmental structures and institutions have always been guided by established policies which are expected to foster development. Policies have not been stagnant and there abounds occasions where slight or major adjustments were made to existing policies with the aim of achieving increased value and development. Unfortunately, the reforms made by Governor Aregbesola in the years 2011–2018 in the Osun state education sector brought disagreements rather than progress. There have been divergent views on the intention and prospect of the reform to achieving the desired end. Using the historical and analytical approach, the paper seeks to investigate the reforms made and also to point out the lapses of these reforms. However, findings indicated that the reforms, though have their gains, they were largely retrogressive. The paper, thus, concluded that the reforms only came to disrupt the peaceful process of the existing policy which was in place.
    Źródło:
    Acta Politica Polonica; 2021, 52; 5-16
    2451-0432
    2719-4388
    Pojawia się w:
    Acta Politica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the influence of the blanking clearance size to the burr development on the sheet of mild steel, brass and aluminium in blanking process
    Autorzy:
    Kamarul Adnan, A. A.
    Azinee, S. N.
    Norsilawati, N.
    Izzul, K. A. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2105503.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    blanking clearance
    burr height
    mild steel
    brass
    aluminium
    zadziory
    stal miękka
    mosiądz
    Opis:
    Purpose: This research aims to analyse the influence of blanking clearance size on the burr development for mild steel sheet, brass and aluminium. The main reason for this research is estimating the burr size on blank parts. It is still significant since the quality of the products is determined by evaluating the amount of allowable burr in the parts. Design/methodology/approach: For the blanking process on the 3.00 mm thick sheets, various sizes of blanking clearance for a 20 mm diameter of the die opening are employed, as is the technique for obtaining the parts. Then the height of the burr on each product was measured using a micrometre and toolmaker microscope. The height of burr for each size of blanking clearance have been recorded and compared using a graph. Comparison made to identify which measure of blanking clearance and which type of material will produce a small size of burr. Findings: For mild steel, brass, and aluminium, blanking clearance 0.15 mm produced burr heights of 0.088 mm, 0.015 mm, and 0.024 mm, and blanking clearance 0.13 mm produced bur heights of 0.192 mm, 0.055 mm, and 0.046 mm, respectively. The brass had a lower burr height than mild steel and aluminium, according to the results. More significant blanking clearance (0.15 mm) produced a smaller size of burr compared to a smaller blanking clearance (0.13 mm). Practical implications: This study focuses on burr height rather than the wear of the punch and die cutting edge; burr height can affect punch and die sharpness. It also can guide practitioners in estimating blanking clearance and the burr height of mild steel, brass and aluminium. Originality/value: This paper demonstrates that the gap between the punch and die influences the burr height. The material strength also affects the burr height, with a high tensile strength resulting in a larger burr.
    Źródło:
    Journal of Achievements in Materials and Manufacturing Engineering; 2022, 111, 1; 26--32
    1734-8412
    Pojawia się w:
    Journal of Achievements in Materials and Manufacturing Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental investigation of two-way concrete slabs reinforced by perforated steel plates under concentrated load
    Autorzy:
    Al-Zahid, Ali Adnan
    Alwash, Nameer A.
    Powiązania:
    https://bibliotekanauki.pl/articles/38882957.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Podstawowych Problemów Techniki PAN
    Tematy:
    two-way slabs
    concentrated load
    self-compacting concrete
    perforated plate
    circle openings
    Opis:
    This research experimentally investigates the effect of using the perforated steel plate instead of steel bars as a reinforcing system in two-way concrete slabs. The study consists of casting four slabs using self-compacting concrete. Three slabs are reinforced by a perforated steel plate and one slab is reinforced by traditional bar reinforcement. The amount of steel in both types of reinforcement is equal. The slabs are tested under a monotonic concentrated load at their middle point. The results show a significant enhancement in behavior. The ultimate load increased about 43% to 76%, depending on the size of the openings. Moreover, the final crack width in all slabs reinforced by a perforated steel plate was smaller than in the slab reinforced by a traditional steel bar. The results of this study may be used in future research to introduce a method that will lead to an improvement in the overall behavior of two-way concrete slabs.
    Źródło:
    Engineering Transactions; 2022, 70, 1; 67-75
    0867-888X
    Pojawia się w:
    Engineering Transactions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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