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Search Results: 1 - 10 of 189984 matches for " G. MARKOVIC "
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Colour as an Element of the Creativity in Education of Design  [PDF]
Zoran Markovic
Open Journal of Social Sciences (JSS) , 2014, DOI: 10.4236/jss.2014.25015
Abstract: Education of Design is creativity based process. From Kansei Engineering to Emotional Design, there are several different approaches in involving feelings and emotions in designing process. Analysing all tools and techniques used by designers, colour has one of the biggest psychological impacts on the final users. Colour has the power not only to change the existing architectural language, but also to be a language on its own. Within architectural semiology, colour has a very important role. The paper presents the preliminary results of the research on cultural background and its influence on the psychological impact of the colour in design (architectural, interior, etc.). The research started in the beginning of 2012 and it has been conducted in Serbia, Botswana, Kenya (fully finalized), India, Slovenia, Brazil (ongoing), Singapore, South Africa and Malaysia (in the preparation stage), Japan, China, Russia, South Korea and Mexico (organization started). The Research objective is to describe, analyse and present importance of the emotional creativity in education, the current status of the role cultural background plays in colour choices in design, as well as to analyse psychological (personal) and social (group) impact and influence of colour. Moreover, the experiments planned are intended not only to outline contemporary cultural influence on colour preferences but also to revisit, revive and expand on the existing research in this field (e.g. [1] Kaya/Epps research at University of Georgia, USA, etc.) by adding the notion of multi-cultural background.
Heart rate and lactate responses to taekwondo fight in elite women performers
G Markovic,V Vucetic,M Cardinale
Biology of Sport , 2008,
Abstract: The purpose of this study was to examine heart rate (HR) and blood lactate (LA) concentration before, during and after a competitive Tae kwon do (TKD) fight performed by elite women performers. Specifically, we were interested to see weather HR and LA responses to competitive fight were greater than to TKD or karate exercises published in scientific literature. Seven international-standard women TKD fighters participated in the study. HR was recorded continuously throughout the fight using Polar Vantage telemetric HR monitors. LA samples were taken before and 3 min after the fight and analysed using an Accusport portable lactate analyzer. At the beginning of the fight, HR significantly increased (p<0.01) from pre-fight values of 91.6±9.9 beats min-1 to 144.1±13.6 beats min-1. During the whole fight the HRmean was 186.6±2.5 beats min-1 and remained significantly elevated (p<0.01) at 3 min into recovery. HR values expressed as a percentage of HRmax averaged during the whole fight at 91.7±2.6% respectively. LA concentration significantly increased (p<0.01) 3 min after the fight and averaged 82% of LApeak values measured after the VO2max test. Results of the present study indicate that physiological demands of competitive TKD fight in women, measured by HR and LA responses, are considerably higher than the physiological demands of TKD or karate training exercises. The observed HR and LA responses suggest to us that conditioning for TKD should generally emphasise high-intensity anaerobic exercise.
Crystalline forms of silver iodide II. Determination of phase transformations
MARIJA R. VUKIC,DRAGAN S. VESELINOVIC,VESNA G. MARKOVIC
Journal of the Serbian Chemical Society , 2007,
Abstract: In order to obtain appropriate forms of AgI (β- and γ-), a procedure was developed to synthesize AgI at room temperature (23 °C), whereby samples of varying crystallographic purity and of varying crystallographic contents of the differrent forms were obtained. This paper presents the results of investigations of the influence of the manner of preparation of β-AgI and γ-AgI samples and the sample heating rate on the phase transformations and their temperatures. During the heating of non-ground, ground and pressed synthesized AgI samples, the phase transformations and the corresponding temperatures for one β-AgI and four γ-AgI samples with different β-AgI contents (representing a crystallographic impurity) were identified. The following phase transformations were observed for the non-ground AgI samples: β-AgI → α-AgI at 149.6 °C (for the β-AgI sample) and γ-AgI → α-AgI at 148.7 °C or 148.2 °C for the γ-AgI samples with a minimum content of β-AgI (less than 7 %), as a crystallographic impurity. The phase transition γ-AgI → α-AgI was irreversible because β-AgI was obtained whenever the samples were heated up to 260 °C. Manual sample grinding, as well as pressing at p1 = 650 MPa and p2 = 900 MPa resulted in the β-AgI → γ-AgI phase transition in all the investigated cases.
"Kaj" je Frederick Winslow Taylor = “What” is Frederick Winslow Taylor
Andrej Markovic
Management , 2006,
Abstract: Raising the issue of Taylor and his scientific management after less than a hundred years seems at first glance to be quite anachronistic. Today we are more likely to find Taylor’s works in antique shops than in the libraries of the schools of management. Has the memory of utilitarian and pragmatic managerial knowledge of a century back faded, or are we in a way ashamed of Taylor, the protagononist of management? How does the research into the origin and nature of management affect the efficiency of a particular manager, which seems to be the objective of management education? What is the difference between Taylor's management and contemporary management? Is it merely less scientific in approach? And where is modern management developing, if no longer in the field of exact science? And where do key notions of contemporary management, like ‘mission’ and ‘vision’ belong? Has management since its beginings proved to be only knowledge for managing organizations, or does it go beyond that? In a brief analysis of Taylor’s scientific management the author of the article tries to answer the above mentioned questions. Some of the questions are, however, only touched upon, awaiting an answer in the future.
Energy storage in the photosynthetic electron-transport chain. An analogy with Michaelis-Menten kinetics
DEJAN MARKOVIC
Journal of the Serbian Chemical Society , 2003,
Abstract: Simultaneous measurements of fluorescence and thermal emission have been performed by applying combined fluorescence and photoacoustic techniques on isolated thylakoids pretreated by prolonged illumination with saturating light. The traces were used to create Lineweaver-Burk type plots, proving clearly at least a formal analogy between the kinetics of the mechanisms governing fluorescence and thermal emission from isolated thylakoids and Michaelis-Menten kinetics of enzymatic reactions. Two characteristic parameters were calculated from them (energy storage and half-saturation light intensity) in order to obtain a basic, initial response of the photosynthetic apparatus functioning under photoinhibition stress.
UV-induced reaction kinetics in dilinoleoylphosphatidylcholine monolayers with incorporated photosensitizers
DEJAN MARKOVIC
Journal of the Serbian Chemical Society , 2006,
Abstract: Mixed insoluble monolayers (Langmuir films) of 1,2-di-O-linoleoyl-3-sn-phosphatidylcholine (1,2-DLPC) and incorporated benzophenone-type photosensitizers at an air-water interface were exposed to prolonged UV-irradiation. The irradiation was initiated at a particular fixed molecular packing value. Changes of the surface pressure during the UV-induced photolysis of the sensitizers were plotted against the irradiation time and the results were interpreted in terms of themolecular lipid / sensitizer ratios inside the monolayers.
The morphology of cavitation damage of heat-treated medium carbon steel
--- SRDJAN MARKOVIC
Journal of the Serbian Chemical Society , 2006,
Abstract: In this paper the morphology of the cavitation damage to heat-treated medium carbon steel was analyzed. The experiments were conducted using a modified vibratory cavitation test set up. The erosion rates weremeasured by an analytical method. The morphology of the cavitation damage was studied by the scanning electron microscopy and optical microscopy techniques. The present work was aimed at understanding the cavitation erosion behaviour of heat-treated medium carbon steel under laboratory conditions. The results indicate that the heat-treated medium carbon steel is not to be recommended for the production of hydraulicmachinery parts exposed to high hydrodynamic intensity.
Halo structure, masses of dark objects and parallax microlensing
D. Markovic
Physics , 1997,
Abstract: We study the use of parallax microlensing to separate the effects of the mass function of dark massive halo objects (MHOs or `machos') on the one hand and their spatial distribution and kinematics on the other. This disentanglement is supposed to allow a much better determination of the two than could be achieved entirely on the basis of the durations of events. We restrict our treatment to the same class of power-law spherical models for the halo of MHOs studied in a previous paper (astro-ph/9609187). Whereas the duration-based error in the average MHO mass, \mu exceeds (at N=100 events) \mu by a factor of 2 or more, parallax microlensing remarkably brings it down to 15-20% of \mu, regardless of the shape of the mass function. In addition, the slope \alpha of the mass function, dn/d\mu\propto\mu^{\alpha}, can be inferred relatively accurately (\sigma_{\alpha} < 0.4) for a broader range, -3 <\alpha < 0. The improvement in the inference of the halo structure is also significant: the index \gamma of the density profile (\rho\sim R^{-\gamma}) can be obtained with the error \sigma_{\gamma} <0.4. While in a typical situation the errors for the parameters specifying the velocity dispersion profile are of about the same magnitude as the parameters themselves, virtually all the uncertainty is `concentrated' in linear combinations of the parameters that may have little influence on the profile and thus allow its reasonably accurate inference.
Bound near-equatorial orbits around neutron stars
Draza Markovic
Physics , 2000,
Abstract: Recent discovery of kilohertz quasi-periodic brightness oscillations of low mass X-ray binaries (LMXBs) has attracted attention to highly relativistic periodic motion near accreting neutron stars. Most models proposed so far involve (almost) inertial motion in the vicinity of the stars' innermost stable circular orbits. In the present paper we study general-relativistic circular and eccentric orbits around spinning neutron stars assuming the orbits are slightly tilted with respect to the stars' equatorial planes. We develop analytical and numerical techniques for integrating bound timelike geodesics in fully relativistic neutron star spacetimes obtained by modern numerical codes. We use equations of state of neutron star matter that span a broad range of stiffness, while the explored range of masses M > 1.7 M(solar) and spin frequencies nu_s < 600 Hz is motivated by the observations of LMXBs. We investigate the general-relativistic effects of periastron advance and nodal precession in the strong gravitational fields of rotating neutron stars and compare quantitatively the associated orbital frequencies with the more readily obtainable frequencies of orbits around Kerr black holes on the one hand, and low-order post-Newtonian (PN) expansions, on the other. While Kerr results approximate the periastron advance frequency much better than the PN expressions, the retrograde torque caused by the high quadrupole moments of the rotating stars clearly favours the PN approximation in the case of nodal precession. The methods developed in the present paper are used in the companion paper to test recent hypotheses regarding the origin of quasi-periodic oscillations in accreting neutron star sources.
On the Forelli-Rudin projection theorem
Marijan Markovic
Mathematics , 2013,
Abstract: Motivated by the Forelli--Rudin projection theorem we give in this paper a criterion for boundedness of an integral operator on weighted Lebesgue spaces in the interval $(0,1)$. We also calculate the precise norm of this integral operator. This is the content of the first part of the paper. In the second part, as applications, we give some results concerning the Bergman projection and the Berezin transform. We derive a generalization of the Dostani\'{c} result on the norm of the Berezin transform acting on Lebesgue spaces over the unit ball in $\mathbf{C}^n$.
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