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Full-Text Articles in Physical Sciences and Mathematics

Numerical Simulation Of Nonlinear Vibrations Of Discrete Mass With Harmonic Force Perturbation, M. Yusupov, B. A. Akhmedov, Olga Karpova Dec 2020

Numerical Simulation Of Nonlinear Vibrations Of Discrete Mass With Harmonic Force Perturbation, M. Yusupov, B. A. Akhmedov, Olga Karpova

Acta of Turin Polytechnic University in Tashkent

The problem of vibration of a single-mass system under the force excitation of vibration associated with a fixed base by a weightless nonlinear viscoelastic spring is considered. To take into account the rheological properties of the spring material, the Boltzmann-Volterra principle was used. Mathematical models of the problem under consideration are obtained, which are described by integro-differential equations. A solution method based on the use of quadrature formulas has been developed and a computer program has been compiled on its basis, the results obtained are presented in the form of graphs. The influence of nonlinear and rheological properties of a …


Algorithm And Application For Iot Based Real Time Patient Monitoring System, Hakimjon Zaynidinov, Sarvar Maxmudjonov, Ruzikulov R.A. Dec 2020

Algorithm And Application For Iot Based Real Time Patient Monitoring System, Hakimjon Zaynidinov, Sarvar Maxmudjonov, Ruzikulov R.A.

Bulletin of TUIT: Management and Communication Technologies

Among the applications that Internet of Things (IoT) facilitated to the world, Healthcare applications are most important. In general, IoT has been widely used to interconnect the advanced medical resources and to offer smart and effective healthcare services to the people. The advanced sensors can be either worn or be embedded into the body of the patients, so as to continuously monitor their health. The information collected in such manner, can be analyzed, aggregated and mined to do the early prediction of diseases. The processing algorithms assist the physicians for the personalization of treatment and it helps to make the …


Estimating The Age And Mechanism Of Boulder Transport Related With Extreme Waves Using Lichenometry, Maria A. Oliveira, Esteve Llop, César Andrade, Cristina Branquinho, Ronald Goble, Sónia Queiroz, Maria C. Freitas, Pedro Pinho Dec 2020

Estimating The Age And Mechanism Of Boulder Transport Related With Extreme Waves Using Lichenometry, Maria A. Oliveira, Esteve Llop, César Andrade, Cristina Branquinho, Ronald Goble, Sónia Queiroz, Maria C. Freitas, Pedro Pinho

Department of Earth and Atmospheric Sciences: Faculty Publications

Tsunamis and storms cause considerable coastal flooding, numerous fatalities, destruction of structures, and erosion. The characterization of energy and frequency associated with each wave contribute to the risk assessment in coastal regions. Coastal boulder deposits represent a physical proof of extreme inundation and allow us to study the effects of marine floods further back in time than instrumental and historical records. Age estimation of these deposits is challenging due to lack of materials (such as sand, shells, corals, or organic matter) that retain information about the passage of time. Lichenometry, a simple age estimation method, which is cost effective, quick …


Alternative Perennial Legumes On Acid Soils In Southern New South Wales, Australia, Guangdi Li, Richard C. Hayes, B. S. Dear Sep 2020

Alternative Perennial Legumes On Acid Soils In Southern New South Wales, Australia, Guangdi Li, Richard C. Hayes, B. S. Dear

IGC Proceedings (1993-2023)

No abstract provided.


Defoliation Impact On The Above And Belowground Productivity Of Festuca Arundinaceae Schreb, Hennie A. Snyman, P. J. Malan Apr 2020

Defoliation Impact On The Above And Belowground Productivity Of Festuca Arundinaceae Schreb, Hennie A. Snyman, P. J. Malan

IGC Proceedings (1993-2023)

The main objective of pasture management is to maximize plant productivity and ensure sustainable animal performance, without inducing pasture deterioration. Many researchers indicated that plant survival and sustainable production is a function of seedbed preparation, irrigation and defoliation, with defoliation having the largest impact on plant persistence (Fulkerson and Donaghy, 2001). The net effect of defoliation (degree of intensity and frequency) can therefore either be beneficial or detrimental to survival and productivity of a pasture. The aim of this study was to quantify the impact of different intensities and frequencies of defoliation on above- and belowground phytomass production of the …


Effect Of Supplementation Frequency On Forage Utilization By Heifers Grazing A Tropical Pasture During The Dry Season, José Augusto Imaz, D. Dos Santos, O. Hernández, A. Radrizzani, J. I. Arroquy Mar 2020

Effect Of Supplementation Frequency On Forage Utilization By Heifers Grazing A Tropical Pasture During The Dry Season, José Augusto Imaz, D. Dos Santos, O. Hernández, A. Radrizzani, J. I. Arroquy

IGC Proceedings (1993-2023)

In tropical pasture, low quality and availability forage during the dry season can limit the cattle intake. Energetic and protein supplementation is a viable practice to improve feed intake and animal performance. Previous studies have shown that infrequent protein supplementation decreases feeding cost achieving similar performance compared with every day supplementation (Farmer et al., 2004). Even though infrequent protein supplementation has been widely studied, little research has been carried out on infrequent energetic supplementation, especially its effect on pasture utilization. Some evidence indicates that negative effects on forage use at low levels of infrequent supplementation (Beaty et al., 1994). …


Effect Of Enclosure On Botanical Composition, Forage Biomass And Other Range Productivity Parameters In A Semi-Arid Area Of El-Khuwei Locality, North Kordofan State, Sudan, Mohammed Abdelkreim, Babo Fadlalla Jan 2020

Effect Of Enclosure On Botanical Composition, Forage Biomass And Other Range Productivity Parameters In A Semi-Arid Area Of El-Khuwei Locality, North Kordofan State, Sudan, Mohammed Abdelkreim, Babo Fadlalla

IGC Proceedings (1993-2023)

Animal production in North Kordofan State is mainly traditional depending on natural rangeland (Cook and Fadlalla 1987), (DHP, 1998). The State has an area of about 25 million ha of which 14.5 million ha is rangeland (Africover 2004). It is among the leading Sudanese States in animal and range resources. It contains more than 13 million heads of sheep, goats, camels and cattle (IFAD 2011). This paper deals with the effect of enclosure and stage of maturity on botanical composition, forage biomass production and other range productivity parameters in this semi-arid area.