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    Wyświetlanie 1-6 z 6
    Tytuł:
    Effect of conservation tillage on yield of spring wheat (Triticum aestivum L.) and soil mineral nitrogen and carbon content
    Autorzy:
    Sadiq, M.
    Li, G.
    Rahim, N.
    Tahir, M.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082985.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    agronomic traits
    conservation agriculture
    soil
    mineral nitrogen
    no-till
    C dynamics
    Opis:
    Conservation farming practices using the least soil disturbance and straw-return benefits the crop agronomic attributes and soil nutrient accumulation. The four-year (2016-2019) research was conducted under randomized complete blocks design to explore the agronomic benefit of conservation tillage practices on wheat yield performance and on soil fertility parameters. The two straw treatments consisted of wheat straw-return to the notilled soil and straw incorporation into the conventionally tilled soil. The two tillage treatments were the no-tillage and conventional tillage control. These conservative tillage treatments were compared with the conventional tillage control. In comparison with conventional tillage, the conservation management practices of no-tilled soil, conventionally tilled soil, and no-tillage notably increased the yield by an average of 33, 26, and 18% respectively. Moreover, conservative tillage practices improved the soil nitratenitrogen, ammonium nitrogen and carbon contents in the 0-30 cm soil layer by 12, 9, and 15% respectively over conventional tillage, averaged across conventionally tilled soil, no-tilled soil, and no-tillage. The overall distribution of soil nitrate-nitrogen, ammonium nitrogen, and carbon in the 0-30 cm soil layer with regard to conventionally tilled, no-tilled soil, and no-tillage was greater than conventional tillage, based on Principal Component Analysis. We concluded that conservation tillage practices could replace conventionally tilled practice with respect to productivity, soil mineral nitrogen, and carbon accumulation benefits.
    Źródło:
    International Agrophysics; 2021, 35, 1; 83-95
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Systematic Mapping Study on Software Measurement Programs in SMEs
    Autorzy:
    Tahir, T.
    Rasool, G.
    Noman, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/384081.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    software measurement process
    software measurement program
    small enterprise (SME)
    medium enterprise (SME)
    software metrics
    software measures
    systematic mapping study
    GQM
    Opis:
    Context: Software measurement programs are essential to understand, evaluate, improve and predict the software processes, products and resources. However, successful implementation of software measurement programs (MPs) in small and medium enterprises (SMEs) is challenging. Objective: To perform a detailed analysis of studies on MPs for highlighting the existing measurement models, tools, metrics selection methods and challenges for implementing MPs in SMEs. Methods: A Systematic Mapping Study (SMS) is conducted. Results: In total, 35 primary studies are comprehensively analyzed. We identified 29 software measurement models and 4 tools specifically designed for MPs in SMEs. Majority of the measurement models (51%) are built upon software process improvement approaches. With respect to measurement purposes of models, the distribution of MPs was identified as: characterization (63%), evaluation (83%), improvement (93%) and prediction (16%). Majority of primary studies discussed the use of measurement experts and experience (60%) followed by the use of measurement standards (40% and the use of automated tools (22%) for metrics selection in MPs. We found that the SMEs and large organization face different challenges as studies in SMEs report challenges that exist even before the implementation of MPs due to infrastructure and management processes of SMEs. The challenges reported by studies in large organizations are mostly related to the issues discovered while implementing MPs. Conclusion: The analysis of measurement models, tools, metrics selection methods and challenges of implementing MPs should help the SMEs to make a feasibility study before implementing a MP.
    Źródło:
    e-Informatica Software Engineering Journal; 2018, 12, 1; 133-165
    1897-7979
    Pojawia się w:
    e-Informatica Software Engineering Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seed priming and foliar application of plant growth regulators affect the growth and yield of okra under calcareous soils
    Autorzy:
    Tahir, M.T.
    Anjum, M.A.
    Saqib, M.
    Khalid, M.F.
    Hussain, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/12664203.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Pakistan
    plant cultivation
    okra
    Abelmoschus esculentus
    seed priming
    plant growth
    growth regulator
    growth regulator effect
    foliar application
    naphthaleneacetic acid
    gibberellin A3
    Opis:
    A field study was conducted to evaluate the effect of different plant growth regulators (PGRs) applied through seed priming and foliar spray on growth and yield of three okra cultivars grown under calcareous soils. The cultivars of Punjab Selection and Sabzpari produced significantly higher number of branches and leaves per plant, pod length and diameter and pod yield as compared to cv. Green ferry, while, cv. Punjab selection produced significantly greater number of flowers and pods per plant as compared to other two cultivars. Seed germination (%), plant height, and fruit set (%) were not affected by the cultivars. Among the PGR treatments, seed primed with GA3 resulted in significantly higher germination percentage and greater plant height at flowering. Seed priming and foliar spray with NAA and GA3 were effective in increasing the final plant height, number of branches, number of leaves, number of flowers and number of pods per plant and fruit set (%), fresh weight per pod and pod yield. However, pod diameter, pod moisture content and dry weight per pod were not influenced by the PGR treatments applied. These results suggested that the PGRs have great potential to improve seed germination, enhance growth and increase yield of okra cultivars under calcareous soils.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 4; 25-33
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spectroscopic Investigation of Rare-Earth Doped Phosphate Glasses Containing Silver Nanoparticles
    Autorzy:
    Amjad, R.
    Sahar, M.
    Ghoshal, S.
    Dousti, M.
    Samavati, M.
    Riaz, S.
    Tahir, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1400152.pdf
    Data publikacji:
    2013-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.30.Ly
    78.55.-m
    78.66.Jg
    Opis:
    Phosphate glasses having compositions $(59.5-x)P_2O_5-40MgO-xAgCl-0.5Er_2O_3$, where x=0, 1.5 mol.% is prepared using melt-quenching technique. Infrared, absorption and photoluminescence spectra of $Er^{3+}$-doped magnesium phosphate glasses have been reported. The amorphous nature of the host glass is confirmed by X-ray diffraction technique. Transmission electron microscope image confirms the existence of silver nanoparticles inside the glass matrix. The localized surface plasmon resonance band of silver is found to be located around ≈ 528 nm for the $Er^{3+}$ free sample. A frequency upconversion process from infrared to visible is observed on excitation with 797 nm radiation. Furthermore, an enhancement in the emission at 540 nm and 632 nm is found due to the local field effect of silver nanoparticles. Our findings may contribute towards the development of solid state laser and sensors.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 4; 746-749
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Statistical distributions and reliability functions with type-2 fuzzy parameters
    Rozkłady statystyczne i funkcje niezawodności o parametrach rozmytych typu-2
    Autorzy:
    Khaniyev, Tahir
    Baskir, M. Bahar
    Gokpinar, Fikri
    Mirzayev, Farhad
    Powiązania:
    https://bibliotekanauki.pl/articles/301821.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    type-2 fuzzy number
    type-2 fuzzy parameters
    (α,β)-cuts
    fuzzy probability distribution
    fuzzy reliability function
    liczba rozmyta typu-2
    parametry rozmyte typu-2
    (α,β) -cięcia
    rozmyty rozkład prawdopodobieństwa
    rozmyta funkcja niezawodności
    Opis:
    Type-2 fuzzy sets were initially given by Zadeh as an extension of type-1 fuzzy sets. There is a growing interest in type-2 fuzzy set and its memberships (named secondary memberships) to handle the uncertainty in type-1 fuzzy set and its primary membership values. However, arithmetical operators on type-2 fuzzy sets have computational complexity due to third dimension of these sets. In this study, we present some mathematical operators which can be easily applied to type-2 fuzzy sets and numbers. Also, mathematical functions of type-2 fuzzy numbers are given according to their monotonicity. These functions are adapted to reliability and distribution functions of the random variables with the type-2 fuzzy parameters. These functions are applied to Exponential, Chi-square, Weibull distributions with respect to monotonicity of the parameters of these distributions.
    Zbiory rozmyte typu 2 po raz pierwszy zaproponował Zadeh jako rozszerzenie zbiorów rozmytych typu 1. Zbiory rozmyte typu 2 oraz ich funkcje przynależności (zwane wtórnymi funkcjami przynależności) cieszą się rosnącym zainteresowaniem, ponieważ pozwalają na modelowanie niepewności w zbiorze rozmytym typu 1 oraz wartości pierwotnych funkcji przynależności do takiego zbioru. Ich wadą jest złożoność obliczeniowa operatorów arytmetycznych wynikająca z trójwymiarowości tych zbiorów. W artykule przedstawiono operatory matematyczne, które można z powodzeniem stosować w odniesieniu do zbiorów i liczb rozmytych typu 2. Podano również funkcje matematyczne liczb rozmytych typu 2 zgodnie z ich monotonicznością. Funkcje te są dostosowane do funkcji niezawodności i rozkładu zmiennych losowych z parametrami rozmytymi typu 2. Można je stosować do opisu rozkładów wykładniczych, chi-kwadrat, oraz Weibulla w odniesieniu do monotoniczności parametrów tych rozkładów.
    Źródło:
    Eksploatacja i Niezawodność; 2019, 21, 2; 268-274
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the Use of the Loud Platform in the Work of the Scientific and Educational Cluster
    Autorzy:
    Temirbekov, Nurlan M.
    Takabayev, Tahir M.
    Baigereyev, Dossan R.
    Wójcik, Waldemar
    Gromaszek, Konrad
    Temirbekov, Almas N.
    Omirzhanova, Bakytzhan B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1844458.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    IT infrastructure
    cloud solutions
    data center
    server
    Opis:
    The process of designing and creating an integrated distributed information system for storing digitized works of scientists of research institutes of the Almaty academic city is analyzed. The requirements for the storage of digital objects are defined; a comparative analysis of the open source software used for these purposes is carried out. The system fully provides the necessary computing resources for ongoing research and educational processes, simplifying the prospect of its further development, and allows to build an advanced IT infrastructure for managing intellectual capital, an electronic library that is intended to store all books and scientific works of the Kazakhstan Engineering Technological University and research institutes of the Almaty academic city.
    Źródło:
    International Journal of Electronics and Telecommunications; 2020, 66, 4; 629-634
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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