Architecture of a Management Information System for Farmers

In view of growing importance of data, information and knowledge in companies has become very actual issue of the quality of their processing through the information system modules. Using of modules of the management information systems for qualified analyzes conducted over primary data stored in companies in the Czech Republic is not too widespread. The aim of this article is based on a long-term investigation conducted to analyze the situation and propose for agricultural holdings architecture management information system for farmers to support their decision-making activities

Influence of the Correct Management of the IT Department on the Quality of Data And Information Processing

The article examines the influence of the existence of an information system and the existence of an information strategy for the management of information systems and information and communication technologies in the company. Two hypotheses have been identified: H1 - in the monitored sample of enterprises there is an increasing tendency of the existing department of informatics, as a separate unit and H2 - monitored respondents are used to manage information systems and information and communication technologies created information strategy. The article was developed based on scientific methods - using holistic methodology, analysis, synthesis, induction and deduction. The established hypotheses were verified by a questionnaire survey. The questionnaire survey was supplemented by direct questioning. The established hypotheses were not confirmed

Structural and Metamorphic History of the Leech River Shear Zone, Vancouver Island, British Columbia

International audienceThe Leech River Shear Zone (LRSZ) on southern Vancouver Island separates the metasedimentary schists of the Leech River Complex from the accreted oceanic plateau of the Siletz-Crescent terrane. The juxtaposition of these rock units suggests a possible origin as a manuscript submitted to Tectonics 2 subduction plate boundary, but tectonic context of the LRSZ has yet to be fully established. We present field, microstructural, petrological, and geochronological observations that constrain the structural and metamorphic history of LRSZ. The mylonite zone of the LRSZ straddles the lithologic contact between the schists of the Leech River Complex and basalts of the Siletz-Crescent terrane. Foliation orientations, a steeply plunging stretching lineation, and kinematic indicators all suggest reverse-sinistral motion. Compositions of garnet in the schist and amphibole in the metabasalt record syn-kinematic growth at temperature and pressure conditions of 550-570 °C and 450-490 MPa. These metamorphic conditions require elevated geotherms that are consistent with plate models that position the Kula-Farallon Ridge and Yellowstone Hotspot in the region in the Eocene (~50 Ma). Detrital zircon U-Pb age distributions for the Leech River Schist have Paleocene maximum depositional ages and are similar to the Upper Nanaimo Group that unconformably overlies the Wrangellia terrane. Our ages support early Paleocene deposition of the schist in a subduction trench/slope environment followed by underthrusting and underplating. These results establish the exhumed mylonite zone of the LRSZ as a paleo-plate interface that was active during Eocene subduction

Environmental pressures on stomatal size may drive plant genome size evolution: evidence from a natural experiment with Cape geophytes

Background and Aims The idea that genome (size) evolution in eukaryotes could be driven by environmental factors is still vigorously debated. In extant plants, genome size correlates positively with stomatal size, leading to the idea that conditions enabling the existence of large stomata in fossil plants also supported growth of their genome size. We test this inductive assumption in drought-adapted, prostrate-leaved Cape (South Africa) geophytes where, compared with their upright-leaved geophytic ancestors, stomata develop in a favourably humid microclimate formed underneath their leaves. Methods Stomatal parameters (leaf cuticle imprints) and genome size (flow cytometry) were measured in 16 closely related geophytic species pairs from seven plant families. In each pair, representing a different genus, we contrasted a prostrate-leaved species with its upright-leaved phylogenetic relative, the latter whose stomata are exposed to the ambient arid climate. Key Results Except for one, all prostrate-leaves species had larger stomata, and in 13 of 16 pairs they also had larger genomes than their upright-leaved relatives. Stomatal density and theoretical maximum conductance were less in prostrate-leaved species with small guard cells (1 pL). Giant stomata were observed in the prostrate-leaved Satyrium bicorne (89–137 µm long), despite its relatively small genome (2C = 9 Gbp). Conclusions Our results imply that climate, through selection on stomatal size, might be able to drive genome size evolution in plants. The data support the idea that plants from ‘greenhouse’ geological periods with large stomata might have generally had larger genome sizes when compared with extant plants, though this might not have been solely due to higher atmospheric CO2 in these periods but could also have been due to humid conditions prevailing at fossil deposit sites