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Tytuł:
Integrability theorems for power series
Autorzy:
Ram, Babu
Powiązania:
https://bibliotekanauki.pl/articles/724103.pdf
Data publikacji:
1974
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Colloquium Mathematicum; 1974, 31, 2; 293-299
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Novel Method for Calculation of Knee Deformation Angles in Clinical and Sport Biomechanics
Autorzy:
Haddas, Ram
Powiązania:
https://bibliotekanauki.pl/articles/1054895.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
Cutting Maneuver
Joint Architecture
Kinematic
Knee Deformation
Knee Injuries
Orthopaedic Surgery
Opis:
Biomechanical analyses seek to improve understanding of the mechanisms of knee injury and to find ways to reduce knee injury incidence. Many clinical biomechanics researchers use a standard kinematic adopted from Newington Children’s Hospital. Biomechanical studies include the knee joint configurations, where joint architecture immutably constrains and guides movement outcomes. Investigators will default to reporting resultant joint deformation without considering the influence of joint architectural configurations on kinematic responses. The purpose of this study was to develop a new joint angular kinematic method that accounts for influence of dynamic joint architectural configuration on deformation values. Twenty subjects performed unloaded dynamic flexion/ extension and 45° cutting maneuver. The knee deformation angles obtained with the new method proposed were compared with the values that obtained using the standard method. One way repeated measurement ANOVA’s was used to compare knee deformation angles values from the standard method that uses a static trial and the new method that uses a dynamic trial. The proposed method distinguishes between dynamic joint architectural configuration and joint deformation. Loaded standard abduction/adduction (β) and rotation (γ) angles were 3.4 ±1.8° and 11.2 ±3.8°, respectively. Using the new method, the β and γ angles decrease to 1.5 ±1.4° (<0.05) and 7.1 ±1.8° (<0.05) during cutting. The new method accounted for dynamic joint architectural configuration produced loaded β and γ angles that had smaller magnitudes than the standard method, suggesting that previous studies may have overestimated β and γ angles. Injury management strategies could be influenced by a consideration for dynamic joint architectural configuration. Such a consideration could influence ligament repair strategies. Future studies should account for dynamic configuration when establishing the influence of joint deformation on graft design and appropriate isometry values during reconstruction.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2016, 13, 1; 5-13
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fiscal Performance Benchmarking of Indian States - A Robust Frontier Approach
Benchmarking kondycji fiskalnej indyjskich stanów – podejście oparte na odporności granicy
Autorzy:
Pratap, Sinha, Ram
Powiązania:
https://bibliotekanauki.pl/articles/694401.pdf
Data publikacji:
2017
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Opis:
Aim: The objective of the paper is to construct an index of fiscal performance of Indian states using four non-parametric approaches ( Data Envelopment Analysis(DEA), Free Disposal Hull(FDH), Order-m and Order-alpha).The reason behind using non-parametric methods for the purpose of construction of index is that the traditional ratio approach is incapable of handling multiple input and output indicators.Research methods: The present study uses a two stage approach. In the first stage, four non-parametric methods have been used to evaluate the performance of Indian states for five consecutive years. The input and output indicators have been selected on the basis of a simple theoretical model. Further, in order to tackle the problem of estimation bias (due to sampling variations) bootstrapped DEA and bootstrapped Order-m methods have been applied. In the second stage ,impact of indebtedness on the performance of the states has been assessed using a censored regression framework.Findings: The major outcome of the study is the construction of a fiscal performance index based on multiple indicators. Moreover, the second stage results indicate that state performance is significantly influenced by their degree of indebtedness.Originality/Value of the article: The present study is perhaps the first attempt to assess the performance of sub-national units in terms of both convex and non-convex mathematical programming methods.Implications of the research : The approach (with suitable  modifications) can be effectively used to benchmark state performance which can serve as a basis for resource transfer from the central government to the states.
Cel: Artykuł ma na celu skonstruowanie indeksu kondycji fiskalnej indyjskich stanów w oparciu o metodę DEA. Uzasadnieniem wykorzystania metod nieparametrycznych w celu opracowania indeksu jest niezdolność tradycyjnego podejścia współczynnikowego do uwzględnienia wskaźników wielokrotnych nakładów i wyników. Metodyka badań: Badanie oparto na dwuetapowym podejściu. W pierwszym etapie wykorzystano metodę DEA do oceny kondycji indyjskich stanów w pięciu kolejnych latach. Wskaźniki nakładów i wyników użyte w DEA ostały wybrane na podstawie prostego modelu teoretycznego. Następnie, aby rozwiązać problem błędu szacunkowego (ze względu na wariacje doboru próby), zastosowano samoczynną DEA. W drugim etapie oceniono wpływ zadłużenia na kondycję stanów, wykorzystując cenzurowane modele regresji. Wnioski: The major outcome of the study is the construction of a fiscal performance index based on multiple indicators. Moreover, the second stage results indicate that state performance is significantly influenced by their degree of indebtedness. Wartość artykułu: Głównym wynikiem badań jest opracowanie indeksu kondycji fiskalnej opartym na wielokrotnych wskaźnikach. Co więcej, wyniki z drugiego etapu badań wskazują, że kondycja stanów znajduje się pod istotnym oddziaływaniem stopnia ich zadłużenia. Ograniczenia: Niniejsze badanie to prawdopodobnie pierwsza próba oceny kondycji jednostek subnarodowych pod względem zarówno wypukłych, jak i niewypukłych metod programowania matematycznego. Implikacje: Zaprezentowane podejście (z odpowiednimi modyfikacjami) może być z powodzeniem stosowane do benchmarkingu kondycji stanów, co może służyć jako podstawa transferu zasobów od rządu centralnego do stanów.
Źródło:
Central European Review of Economics and Management; 2017, 1, 4; 225-249
2543-9472
Pojawia się w:
Central European Review of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indebtedness, Fiscal Discipline and Development Spending – A Non-parametric Approach
Autorzy:
Sinha, Ram Pratap
Powiązania:
https://bibliotekanauki.pl/articles/2075409.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Indian states
fiscal performance
efficiency
data envelopment analysis
bootstrap
Opis:
Indian states exhibit considerable heterogeneity in terms of revenue mobilizing capacities and efforts, development spending and fiscal dependence on the central government. In this context, the paper compares the fiscal performance of major Indian states in terms of two non-parametric performance evaluation models for the period 2009–10 to 2014–15. The study thus uses the conventional two stage framework for efficiency evaluation as well as the two stage conditional performance model. The outcomes enable us to identify front-runners as well as laggards in the area of fiscal management. Further, the study showed that the gross capital formation experienced by the states significantly influences state performance in India. However, the impact of outstanding liabilities on efficiency performance was statistically insignificant
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2021, 2; 147-173
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical modeling of short pulsed laser irradiation in the cornea: a dual phase lag model
Autorzy:
Autar, Ram
Kumar, Anuj
Powiązania:
https://bibliotekanauki.pl/articles/1839838.pdf
Data publikacji:
2021
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
temperature
laser
cornea
refractive error
Laser Thermo Keratoplasty
LTK
Laplace transformation technique
dual phase lag equation
temperatura
rogówka
termokeratoplastyka
refrakcja oka
Opis:
A simple mathematical model for the temperature evolution in the cornea exposed to short-pulsed Ho: YAG laser under Laser Thermo Keratoplasty (LTK) treatment is developed by incorporating both the heat flux phase-lag and temperature gradient phase-lag in Fourier’s heat transfer model. An analytical solution to the mathematical model is obtained using the Laplace transformation technique. The computational results for the temperature profile and the temperature variation with time are presented through the graphs. The effect of some typical parameters: the heat flux phase-lag and the temperature gradient phase-lag on the temperature distribution and temperature variations are illustrated and discussed.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2021, 20, 3; 5-16
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of Anticoagulant Dabigatran by Analytical Instrumentation
Autorzy:
Patel, B.
Ram, P.
Khatri, T.
Ram, V
Dave, P.
Powiązania:
https://bibliotekanauki.pl/articles/412564.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Dabigatran
UPLC/MS/MS
zeta potential
FTIR
UV-NIR
Thermal analysis
Opis:
Dabigatran with IUPAC name 3-({2-[(4-Carbamimidoyl-phenylamino)-methyl]-1-methyl-1H-benzoimidazole-5-carbonyl}-pyridin-2-yl-amino)-propionic acid, which can be used to prevent strokes in those with atrial fibrillation due to causes other than heart valve disease, and at least one additional risk factor for stroke (congestive heart failure, hypertension, age, diabetes, and prior stroke), with molecular formula C34H41N7H5 was studied in detail for functional group analysis with FTIR, characteristic absorbance by UV-NIR, thermal behavior by TGA-DTA-DSC, particle size and stability of the molecule with Nano particle size analyzer. The structure was confirmed by LC-MS/MS with ESI probe and mass was found in aggregation with the reported standard values. The purity of drug was determined by Prep. HPLC analysis. FTIR analysis showed the characteristic peak of carboxylic acid, UV-NIR analysis showed that the λmax was 224 nm with methanol as a diluent, the compound was found stable in the thermal analysis, the average particle size was found to be 25.2 nm, Z-average as 0.2 nm and zeta potential as -67.6 mv hence showed excellent stability in the zeta potential analysis as per ASTM standards D4187-82, American Society of Testing and Materials, 1985.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 11, 3; 233-242
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Frequency magnitude distribution and spatial correlation dimension of earthquakes in north-east Himalaya and adjacent regions
Autorzy:
Tiwari, Ram Krishna
Paudyal, Harihar
Powiązania:
https://bibliotekanauki.pl/articles/2204361.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
north-east India
b value
maximum likelihood estimation
correlation dimension
Indie północno-wschodnie
parametr b
największa wiarygodność
estymacja
wymiar korelacyjny
Opis:
The north-east sector of the Himalaya is one of the most active tectonic belts, with complex geological and tectonic features. The b-value and spatial correlation dimension (Dc) of earthquake distribution in the north-east Himalaya and its adjacent regions (20–32°N and 88–98°E) are estimated in the present study. Based on seismicity and faulting pattern, the region is divided into five active regions, namely the (i) South-Tibet, (ii) Eastern-Syntaxis, (iii) Himalayan-Frontal Arc, (iv) Arakan-Yoma belt and (v) Shillong-Plateau. A homogeneous catalogue of 1,416 earthquakes (mb ≥ 4.5) has been prepared from a revised catalogue of the ISC (International Seismological Centre). The b-value has been appraised by the maximum likelihood estimation method, while Dc values have been calculated by the correlation integral meth-od; b-values of 1.08 ± 0.09, 1.13 ± 0.05, 0.92 ± 0.05, 1.00 ± 0.03 and 0.98 ± 0.08 have been computed for the South-Tibet, Eastern-Syntaxis, Himalayan-Frontal Arc, Arakan-Yoma belt and Shillong-Plateau region, respectively. The Dc values computed for the respective regions are 1.36 ± 0.02, 1.74 ± 0.04, 1.57 ± 0.01, 1.8 ± 0.01, and 1.83 ± 0.02. These values are > 1.5, except for the South-Tibet (1.36 ± 0.02). The b-values around the global average value (1.0) reflect the stress level and seismic activity of the regions, while high Dc values refer to the heterogeneity of the seismogenic sources.
Źródło:
Geologos; 2022, 28, 2; 115--128
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cyanobacterial diversity from seven mangrove environments of Kerala, India
Autorzy:
Ram, Arun T.
Shamina, M.
Powiązania:
https://bibliotekanauki.pl/articles/1118360.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Mangroves
biodiversity
marine cyanobacteria
Opis:
A survey on the cyanobacterial biodiversity of 7 mangrove environments viz. Vallikunnu, Kadalundi, Kallayi, Mangalavanam, Kumbalam, Kumarakom and Mekkara mangroves of Kerala was undertaken during 2014-2016. In total, 31 species of cyanobacteria coming under 10 genera and 4 families were recorded in all mangrove environments. Maximum species (13 species) of cyanobacteria were recorded from Kadalundi, whereas the minimum was recorded from Mangalavanam (2 species). The genus Oscillatoria was observed with maximum distribution (13 species), followed by Nostoc (5 species) and Lyngbya (3 species). The genus Aphanocapsa, Microcoleus and Scytonema (2 species each) and Chroococcus, Aphanothece, Merismopedia, and Phormidium (1 species each) shows equal distribution. As many as three species, namely Oscillatoria salina, Oscillatoria ornata and Oscillatoria vizagapatensis were common in all mangrove environments except Mangalavanam and Mekkara.
Źródło:
World News of Natural Sciences; 2017, 9; 91-97
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Software reliability growth modeling for agile software development
Autorzy:
Rawat, S.
Goyal, N.
Ram, M.
Powiązania:
https://bibliotekanauki.pl/articles/329876.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
software reliability
nonhomogeneous poison process
transient faults
permanent faults
Musa model
niezawodność oprogramowania
błąd przejściowy
zwarcie trwałe
Opis:
The frequent incremental release of software in agile development impacts the overall reliability of the product. In this paper, we propose a generic software reliability model for the agile process, taking permanent and transient faults into consideration. The proposed model is implemented using the NHPP (non-homogenous Poisson process) and the Musa model. The comparison of the two implementations yields an effective, empirical and reliable model for agile software development.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2017, 27, 4; 777-783
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Gender and Recurrent Low Back Pain on Lifting Style
Autorzy:
Haddas, Ram
Yang, James
Sizer, Philip
Powiązania:
https://bibliotekanauki.pl/articles/1054732.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
clinical biomechanics
injury prevention
lifting
low back pain
Opis:
Objective: The purpose of this study was to examine the influence of gender and existing, recurrent low back pain (rLBP) on lower extremity and trunk mechanics, as well as neuromuscular control, during a lift task. Design: A multivariate design was used to examine the effects of gender and group on biomechanical and neuromuscular control variables in randomized symmetric and asymmetric lifting. Methods: 68 Males and females with rLBP and healthy performed symmetric and asymmetric weighted box lifting trials to a 1 meter height table. Results: Lifting style was different between gender and between the rLBP versus healthy groups during a 1m box lifting. A significant two-way interaction effect between gender and group was observed for multifidus muscle activity and knee rotation in asymmetric lifting. Several gender and group main effects were observed in pelvis obliquity, trunk flexion and side flexion, knee abduction angles in symmetric lifting; and in pelvis obliquity and rotation, trunk flexion and side flexion, hip abduction, knee abduction angles, external oblique and internal oblique muscles activity in asymmetric lifting. Conclusions: Females and individuals with rLBP appear to use different lifting styles that emphasize movement at the pelvis accompanied by poor kinematic control features at the hip, trunk and knee. Clinicians should be mindful of these changes when developing prevention and rehabilitation programs aimed at improving trunk control in preparation for lifting tasks during domestic and occupational activities.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2015, 11, 3; 15-28
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical Model of Oxygen Transport in Cornea
Autorzy:
Avtar, Ram
Seth, Deepti
Kumar, Aadesh
Powiązania:
https://bibliotekanauki.pl/articles/1159714.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Crank-Nicoloson method
Michaelis-Menten kinetics
Oxygentransport
Thomas algorithm
finite difference
metabolism
oxygen consumption
pressure gradient
Opis:
The aim of present work is the development of a quasi-steady state model for the time course concentration profile describing the oxygen diffusion and consumption in a multilayered corneal tissue and investigation of the effect of various model parameters on the oxygen concentration for open and closed eyes. A simple mathematical model for the oxygen transport in multilayered corneal tissue was developed using Fick’s law of diffusion, Michaelis-Menten kinetics of metabolism. A Crank-Nicolson finite difference scheme of the equation describing the oxygen diffusion and consumption was written, in which spatial diffusive terms of the equation were approximated by central differences while the temporal terms were approximated by average of forward and backward time differences. A system of linear equations obtained from the Crank-Nicholson finite differences schemes was solved by the Thomas Algorithm in which successive improve approximate results are obtained.
Źródło:
World Scientific News; 2018, 113; 169-184
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł

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