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722. A local approach to g-entropy
- Creator:
- Rahimi, Mehdi
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- fuzzy entropy, g-entropy, and local entropy
- Language:
- English
- Description:
- In this paper, a local approach to the concept of g-entropy is presented. Applying the Choquet`s representation Theorem, the introduced concept is stated in terms of g-entropy.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
723. A local convergence theorem for partial sums of stochastic adapted sequences
- Creator:
- Yang, Weiguo, Ye, Zhongxing, and Liu, Wen
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- local convergence theorem, stochastic adapted sequence, and martingale
- Language:
- English
- Description:
- In this paper we establish a new local convergence theorem for partial sums of arbitrary stochastic adapted sequences. As corollaries, we generalize some recently obtained results and prove a limit theorem for the entropy density of an arbitrary information source, which is an extension of case of nonhomogeneous Markov chains.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
724. A long-lasting photorespiration in CO2-free air, measured as the postirradiation CO2 burst, indicates mobilization of storage photosynthates
- Creator:
- Xiong, Fusheng, Gao, Yuzhu, and Song, Ping
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- DCMU, iodoacetic acid, N-ethylmaleimide, photoinhibition, Pi, and Triticum
- Language:
- Multiple languages
- Description:
- In CO2-free air, the CO2 postirradiation burst (PIB) in wheat leaves was measured with an IRGA in an open gas exchange system to ascertain its potential role in alleviating photoinhibition of photorespiratory carbon oxidation (PCO) under a CO2 deficiency. A pre-photosynthesized leaf having been transferred into CO2-free air exhibited a typical CO2 PIB following darkening which could last, with a rate substantially higher than that of dark respiration, over a long time period (at least more than 2 h) of continuously alternate irradiation (2 min)-dark (2 min)-light transitions. The rate and the time of PIB maintenance, although unaffected by the exogenous dark respiration inhibitor iodoacetic acid, were stimulated largely by increasing irradiance and O2 level, and suppressed by DCMU and N-ethyl-maleimide (NEM). They also showed a large photosynthates-loading dependence. In a darkened leaf, the irradiation-induced PIB in the CO2-free air was clearly revealed and it was characterized by an initial net uptake of respiratory CO2. The light-induced PIB was accelerated by increasing irradiance, and delayed by prolonging the period of darkening the leaves. Hence, the origin of carbon needed for a long-term CO2 evolution in the CO2-free air might not only be derived directly from the pool of intermediates in the Calvin cycle, but it might also arise indirectly from a remotely fixed reserve of photosynthates in the leaf via a PCO-mediated, yet to be further clarified, mobilization process. Such mobilization of photosynthates probably exerted an important role in coordination of photochemical reactions and carbon assimilation during photosynthesis in C3 plants under the photoinhibitory conditions. and Fusheng Xiong, Yuzhu Gao, Ping Song.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
725. A long-term response of chlorophyll fluorescence induction to one-shot application of cyanazine on barley plants and its relation to crop yield
- Creator:
- Matoušková, M., Nauš, J., and Flašarová, M.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Bladex 50 SC, caryopsis mass, grain number and mass in spike, herbicide, Hordeum vulgare, leaf age, plant dry mass, and plant topography
- Language:
- Multiple languages
- Description:
- Field-grown plants of spring barley (Hordeum vulgare L. cv. Akcent) in the growth phase 30 DC (beginning of stem extension) were exposed to a one-shot application of a commercial product containing cyanazine (Bladex 50 SC) in two doses, C30 and C60 (30 and 60 mg m-2). The reaction of the plant photosynthetic system was followed non-destructively using chlorophyll fluorescence induction (the O-J-I-P transient) within three weeks after the application in the fifth developed leaf and three further gradually appearing leaves. An immediate response of plants to the application of cyanazine and a regeneration of plants from cyanazine action were detected. The biological (plant dry mass) and crop yield production (the number and mass of grains in a spike) were analyzed in time of full ripeness. The crop yield was lowered by the herbicide effect to the same level for the two doses used. and M. Matoušková, J. Nauš, M. Flašarová.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
726. A Lyapunov-based design tool of impedance controllers for robot manipulators
- Creator:
- Mendoza, Marco, Bonilla, Isela, Reyes, Fernando, and González-Galván, Emilio
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- impedance control, Lyapunov stability, and robot manipulator
- Language:
- English
- Description:
- This paper presents a design tool of impedance controllers for robot manipulators, based on the formulation of Lyapunov functions. The proposed control approach addresses two cha\-llen\-ges: the regulation of the interaction forces, ensured by the impedance error converging to zero, while preserving a suitable path tracking despite constraints imposed by the environment. The asymptotic stability of an equilibrium point of the system, composed by full non\-li\-near robot dynamics and the impedance control, is demonstrated according to Lyapunov's direct method. The system's performance was tested through the real-time experimental implementation of an interaction task involving a two degree-of-freedom, direct-drive robot.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
727. A manifesto for messy philosophy of technology: the history and future of an academic field
- Creator:
- Swer, Gregory Morgan and Du Toit, Jean
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- philosophy of technology, pragmatism, social construction of technology, Lewis Mumford, filosofie techniky, pragmatismus, and sociální konstrukce technologie
- Language:
- Czech
- Description:
- Philosophy of technology was not initially considered a consolidated field of inquiry. However, under the influence of sociology and pragmatist philosophy, something resembling a consensus has emerged in a field previously marked by a lack of agreement amongst its practitioners. This has given the field a greater sense of structure and yielded interesting research. However, the loss of the earlier “messy” state has resulted in a limitation of the field’s scope and methodology that precludes an encompassing view of the problematic issues inherent in the question of technology. It is argued that the heterodox disunity and diversity of earlier philosophy of technology was not a mark of theoretical immaturity but was necessitated by the field’s complex subject matter. It is further argued that philosophy of technology should return to its pluralistic role as a meta-analytical structure linking insights from different fields of research. and Filosofi e techniky nebyla zpočátku považována za ucelenou oblast bádání. Pod vlivem sociologie a pragmatické fi losofi e se však postupně začal utvářet určitý konsensus, který dal fi losofi i techniky větší strukturovanost a nová témata k výzkumů. Ztráta dřívějšího „chaotického“ stavu však vedla k omezení rozsahu a metodiky tohoto oboru a znesnadňuje komplexní pohled, který je pro zkoumání technologie nezbytný. V tomto článku budeme zastávat pozici, že heterodoxní nejednotnost a rozmanitost dřívější fi losofi e techniky nebyla známkou teoretické nezralosti, ale nutným důsledkem složitosti zkoumané oblasti. Filosofi e techniky by se dle nás měla vrátit ke své pluralitní roli metaanalytické struktury, která spojuje poznatky z různých oblastí výzkumu.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
728. A marine phytoplankton Prymnesium parvum upregulates the component proteins of photosystem II under iron stress
- Creator:
- Rahman, M. M., Rahman, M. A., Maki, T., Nishiuchi, T., Asano, T., and Hasegawa, H.
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- fotosyntéza, fytoplankton, železo, photosynthesis, phytoplankton, iron, Japonsko, Hirošima (Japonsko), Japan, mořský fytoplankton, Fe limitation, growth rate, protein expression, Prymnesium parvum, marine phytoplankton, Fukuyama Bay, 2, and 581
- Language:
- Multiple languages
- Description:
- Iron is an essential limiting factor for primary production in many marine systems. The present study investigated differential regulation of protein expression in marine phytoplankton Prymnesium parvum under low Fe concentration. The phytoplankton was grown in f/2 culture medium in artificial seawater with low (0.0025 μM) and high (0.05 μM) Fe concentrations. Two-dimensional differential gel electrophoresis and matrix-assisted laser desorption-ionization-time of flight-mass spectrometer analysis were performed for protein identification and characterization. The growth of the alga declined substantially under the low Fe compared to the high Fe concentration. Under low Fe conditions, P. parvum upregulated 10 proteins including chloroplastic ATP synthase subunit b, D2 protein of PSII, D1 protein of PSII reaction centre, and light harvesting complex II protein, most of which are associated with photosynthetic activities in PSII. The results suggest that the marine alga P. parvum altered the biosynthesis of several photosynthetic proteins in order to cope with low Fe conditions., M. M. Rahman, M. A. Rahman, T. Maki, T. Nishiuchi, T. Asano, H. Hasegawa., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
729. A Maschke type theorem for relative Hom-Hopf modules
- Creator:
- Guo, Shuangjian and Chen, Xiu-Li
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- monoidal Hom-Hopf algebra, separable functors, Maschke type theorem, total integral, and relative Hom-Hopf module
- Language:
- English
- Description:
- Let $(H,\alpha )$ be a monoidal Hom-Hopf algebra and $(A,\beta )$ a right $(H,\alpha )$-Hom-comodule algebra. We first introduce the notion of a relative Hom-Hopf module and prove that the functor $F $ from the category of relative Hom-Hopf modules to the category of right $(A, \beta )$-Hom-modules has a right adjoint. Furthermore, we prove a Maschke type theorem for the category of relative Hom-Hopf modules. In fact, we give necessary and sufficient conditions for the functor that forgets the $(H, \alpha )$-coaction to be separable. This leads to a generalized notion of integrals.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
730. A mathematical model for describing light-response curves in Nicotiana tabacum L.
- Creator:
- Chen, Z. Y., Peng, Z. S., Yang, J., Chen, W. Y., and Ou-Yang, Z. M.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- botanika, botany, light-response curves, light saturation point, maximum net photosynthetic rate, modified exponential model, net photosynthetic rate, and Nicotiniana tabacum L.
- Language:
- Multiple languages
- Description:
- A modified exponential model was used to describe light-response curves of Nicotiana tabacum L. The accuracies of an exponential model, a nonrectangular hyperbola model, a rectangular hyperbola model, a modified rectangular hyperbola model and the modified exponential model were evaluated by Mean square error (MSE) and Mean absolute error (MAE). The tests MSE and MAE of the modified exponential model were the lowest among the five models. The light saturation point (LSP) obtained by the exponential model, the nonrectangular hyperbola model and the rectangular hyperbola model were much lower than the measured values, and the maximum net photosynthetic rates (Pmax) calculated from these models, were greater than the measured values. Pmax at LSP of 1,077 μmol m-2 s-1 calculated by the modified exponential model was 12.34 μmol(CO2) m-2 s-1, which was more accurate than the values obtained from the modified rectangular hyperbola model. The results show that the modified exponential model is superior to other models for describing light-response curves. and Z. Y. Chen ... [et al.].
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public