IDENTIFICATION OF THE PARAMETERS OF A WALL CONSTRUCTION OF BUILDINGS (MATHEMATICAL APPROXIMATION) FOR AN ABSORPTION REFRIGERATING SYSTEM BY KNOWING ITS REFRIGERATING POWER AND THE SOLAR INTENSITY

The heat load of the inner space of the building, which comes through the wall construction, or develops inside (by people, machines, etc.) is equal to or less than the refrigerator power in the examination period. We consider the allowed refrigerator power to be given, which means the heat load of the inner space. This enters the inner space through the wall construction the parameters of which are unknown to us. The question is, which wall contsruction fulfills the given requirements. The method is suitable for determining the wall parameters

Relationship between interparental functioning and adolescents' level of Machiavellianism: a multi-perspective approach

Childrearing antecedents of Machiavellianism have been investigated, finding that cold, rejecting, and neglecting parenting is associated with Machiavellianism. However, there is a paucity of research on Machiavellianism and family functioning that is suggested to be a stronger predictor of children's adjustment than parenting. In two cross-sectional, self-report studies with 266 adolescents (115 boys) and 98 families raising adolescents (51 boys), we investigated the relationship between adolescent Machiavellianism and interparental functioning. We found that some aspects of perceived interparental conflict and poor quality coparenting were associated with higher levels of Machiavellianism in boys. The association between interparental discord and Machiavellianism has been discussed with respect to previous studies on family functioning, child maladjustment, and Machiavellianism. The selective relationship between measured indices of interparental functioning and Machiavellianism in boys has been discussed using the male vulnerability hypothesis and the distinct pathways model

Finite element modelling of central leader and vase shape cherry trees

Central leader and vase form tree models were built using Finite Element Modelling (FEM). Their main characteristics were chosen to be the same. To get comparable results to real values, acceleration versus time curves of the two types of real trees were processed using FFT method to determine their natural frequencies. The natural frequencies measured on real trees and calculated for the models have shown good similarity. The models were virtually exposed to the effect of horizontal forced vibration in the frequency range of 0–20 Hz. Acceleration-frequency curves were calculated and drawn to find the best frequency values for the highest accelerations and also to see their differences in the limb. For the same purpose, the direction of shaking was also changed. It was found that for the central leader limb shape multidirectional shaking would bring uniform detachment, while for the vase form trees, even the unidirectional shakers are appropriate. Real trees were also shaken and their acceleration-frequency curves were compared with the values of the FEMs. The resultant good similarity proves the ability of the models. The acceleration values achieved in the vase form models were much higher than for the central leader type. The acceleration-frequency curve of the shaker unit can be used to find the best frequency for shaking

IT background of the medium-term storage of Martonvásár Cereal Genebank resources in phytotron cold rooms

Genebanks are storage facilities designed to maintain the plant genetic resources of crop varieties (and their wild relatives) and to ensure that they are made available and distributed for use by plant breeders, researchers and farmers. The Martonvásár Cereal Genebank (MV-CGB) collection evolved from the working collections of local breeders and consists predominantly of local and regional materials. Established in 1992 by the Agricultural Research Institute of the Hungarian Academy of Sciences (Bedő, 2009), MVCGB with its over 10,000 accessions of the major species (Triticum, Aegilops, Agropyron, Elymus, Thinopyrum, Pseudoroegneria, Secale, Hordeum, Avena, Zea mays), became one of the approx. 80 cereal germplasm collections that exist globally. In Martonvásár breeding is underway on a number of cereal species, and large numbers of genotypes are tested each year in the field and under laboratory conditions. The increasing size of the research programmes assisted by a modern genebank background involve an enormous increase in the quantity of data that must be handled during research activities such as traditional breeding, pre-breeding and organic breeding. A computerized system is of primary importance to synchronize breeding and genebank activities, to monitor the quality and quantity of seed accessions in cold storage, to assist the registration of samples, and to facilitate characterization, regeneration and germplasm distribution