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1653. Alliance approach to the modeling of interfaces in complex heterogeneous objects

Creator:
Votruba, Zdeněk and Novák , Mirko
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
System alliance, interface, dynamics, control, automaton, neural structures, complex objects, heterogeneity, wholes, agents, and holons
Language:
English
Description:
Fundamentals of the theory of system alliances are briefly reviewed. An accent is put on interfaces (IFs). The model of IFs consisting of a pair of finite deterministic automata sharing a part of their internal state space is introduced. The presented model of alliance interface can be successfully implemented for the study of typical phenomena in complex heterogeneous objects with a significant degree of uncertainty.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

1654. Allometric model for nondestructive leaf area estimation in clary sage (Salvia sclarea L.)

Creator:
Kumar, R. and Sharma, S.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
botanika, botany, clary sage, nondestructive, regression model, Salvia sclarea, and validation
Language:
Multiple languages
Description:
Leaf area estimation is an important biometrical observation recorded for evaluating plant growth in field and pot experiments. In this study, conducted in 2009, a leaf area estimation model was developed for aromatic crop clary sage (Salvia sclarea L.), using linear measurements of leaf length (L) and maximum width (W). Leaves from four genotypes of clary sage, collected at different stages, were used to develop the model. The actual leaf area (LA) and leaf dimensions were measured with a Laser Area meter. Different combinations of prediction equations were obtained from L, W, product of LW and dry mass of leaves (DM) to create linear (y = a + bx), quadratic (y = a + bx + cx2), exponential (y = aebx), logarithmic (y = a + bLnx), and power models (y = axb) for each genotype. Data for all four genotypes were pooled and compared with earlier models by graphical procedures and statistical measures viz. Mean Square Error (MSE) and Prediction Sum of Squares (PRESS). A linear model having LW as the independent variables (y = -3.4444 + 0.729 LW) provided the most accurate estimate (R 2 = 0.99, MSE = 50.05, PRESS = 12.51) of clary sage leaf area. Validation of the regression model using the data from another experiment showed that the correlation between measured and predicted values was very high (R 2 = 0.98) with low MSE (107.74) and PRESS (26.96). and R. Kumar, S. Sharma.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

1655. Allometric models for leaf area estimation across different leaf-age groups of evergreen broadleaved trees in a subtropical forest

Creator:
Zhang, L. and Pan, L.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
botanika, botany, evergreen broadleaved trees, leaf age, leaf area, leaf length and width, and subtropical forest
Language:
Multiple languages
Description:
The accurate and nondestructive determination of individual leaf area (LA) of plants, by using leaf length (L) and width (W) measurement or combinations of them, is important for many experimental comparisons. Here, we propose reliable and simple regressions for estimating LA across different leaf-age groups of eight common evergreen broadleaved trees in a subtropical forest in Gutianshan Natural Reserve, eastern China. During July 2007, the L, W, and LA of 2,923 leaves (202 to 476 leaves for each species) were measured for model construction and the respective measurements on 1,299 leaves were used for model validation. Mean L, W, LA and leaf shape (L:W ratio) differed significantly between current and older leaves in four out of the eight species. The coefficients of one-dimension LA models were affected by leaf age for most species while those incorporating both leaf dimensions (L and W) were independent of leaf age for all the species. Therefore, the regressions encompassing both L and W (LA = a L W + b), which were independent of leaf age and also allowed reliable LA estimations, were developed. Comparison between observed and predicted LA using these equations in another dataset, conducted for model validation, exhibited a high degree of correlation (R 2 = 0.96-0.99). Accordingly, these models can accurately estimate the LA of different age groups for the eight evergreen tree species without using instruments. and L. Zhang, L. Pan.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

1656. Allosteric activation of yeast enzyme neutral trehalase by Calcium and 14-3-3 Protein

Creator:
Alblova, M. , Smidova, A., Kalabova, D., Lentini Santo, D., Obsil, T., and Obsilova, V.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
14-3-3 protein, Trehalase, Calcium, Trehalose, Allostery, Conformation, Enzyme, and Crystal structure
Language:
English
Description:
Neutral trehalase 1 (Nth1) from Saccharomyces cerevisiae catalyzes disaccharide trehalose hydrolysis and helps yeast to survive adverse conditions, such as heat shock, starvation or oxidative stress. 14-3-3 proteins, master regulators of hundreds of partner proteins, participate in many key cellular processes. Nth1 is activated by phosphorylation followed by 14-3-3 protein (Bmh) binding. The activation mechanism is also potentiated by Ca2+ binding within the EF-hand-like motif. This review summarizes the current knowledge about trehalases and the molecular and structural basis of Nth1 activation. The crystal structure of fully active Nth1 bound to 14-3-3 protein provided the first high-resolution view of a trehalase from a eukaryotic organism and showed 14-3-3 proteins as structural modulators and allosteric effectors of multi-domain binding partners.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

1657. ALMA: společné pracoviště pro výzkum výtvarného umění

Creator:
Švarcová, Silvie and David Hradil
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Věda. Všeobecnosti. Základy vědy a kultury. Vědecká práce, Akademická laboratoř materiálového průzkumu malířských děl, výtvarné umění, vědecké instituce a organizace, art, scientific institutions and organizations, Česko, Czechia, 12, and 00
Language:
Czech
Description:
Academic Materials Research Laboratory of Painted Artworks (ALMA) is a joint workplace of the Academy of Fine Arts in Prague (AFA) and the Institute of Inorganic Chemistry of the Academy of Sciences of the Czech Republic (IIC ASCR). This is a scientific laboratory focused on the Czech cultural heritage. Combining the branches of the natural sciences, art and the history of art, ALMA seeks to deepen the knowledge of painting materials and techniques. The knowledge acquired is integrated into a complete evaluation of painted art works by origin, age, and authenticity. The ALMA Laboratory develops instrumental materials analysis methods and interprets the results in the context of art history and history of materials technology. and Silvie Švarcová, David Hradil.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

1658. Almost $\pi$-lattices

Creator:
Jayaram, C.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
$\pi $-domain, almost $\pi $-domain, $\pi $-ring, and $d$-prime element
Language:
English
Description:
In this paper we establish some conditions for an almost $\pi $-domain to be a $\pi $-domain. Next $\pi $-lattices satisfying the union condition on primes are characterized. Using these results, some new characterizations are given for $\pi $-rings.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

1659. Almost Butler groups

Creator:
Bican, Ladislav
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
math and almost Butler groups
Language:
English
Description:
Generalizing the notion of the almost free group we introduce almost Butler groups. An almost $B_2$-group $G$ of singular cardinality is a $B_2$-group. Since almost $B_2$-groups have preseparative chains, the same result in regular cardinality holds under the additional hypothesis that $G$ is a $B_1$-group. Some other results characterizing $B_2$-groups within the classes of almost $B_1$-groups and almost $B_2$-groups are obtained. A theorem of stating that a group $G$ of weakly compact cardinality $\lambda $ having a $\lambda $-filtration consisting of pure $B_2$-subgroup is a $B_2$-group appears as a corollary.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

1660. Almost g˜α-closed functions and separation axioms

Creator:
Ravi, O., Ganesan, S., and Latha, R.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
topological space, ˜g-closed set, ˜gα-closed set, and αg-closed set
Language:
English
Description:
We introduce a new class of functions called almost ˜gα-closed and use the functions to improve several preservation theorems of normality and regularity and also their generalizations. The main result of the paper is that normality and weak normality are preserved under almost ˜gα-closed continuous surjections.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

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