Privacy sets for constrained space-filling

The paper provides typology for space filling into what we call "soft" and "hard" methods along with introducing the central notion of privacy sets for dealing with the latter. A heuristic algorithm based on this notion is presented and we compare its performance on some well-known examples

Plant hormones in interactions with the environment

Plants are continuously exposed to a myriad of external signals such as fluctuating nutrients availability, drought, heat, cold, high salinity, or pathogen/pest attacks that can severely affect their development, growth, and fertility. As sessile organisms, plants must therefore be able to sense and rapidly react to these external inputs, activate efficient responses, and adjust development to changing conditions. In recent years, significant progress has been made towards understanding the molecular mechanisms underlying the intricate and complex communication between plants and the environment. It is now becoming increasingly evident that hormones have an important regulatory role in plant adaptation and defense mechanisms

Pasportizace lesních cest v západní části lesoparku v Ostravě-Porubě

Import 02/11/2016This bachelor thesis deals with the process pasportization of forest roads in the western part of the forest park in Ostrava-Poruba. The theoretical part contains explanations of terms related with pasportization, adivision of forest roads and geodetic surveying. The practical part contains information about the given location, description of the surveying instruments and methods and data processing in computer programs. The result is a passport of forest roads with color distinguishing the type of road surface and longitudinal elevation profile.Zadaná bakalárska práca sa zaoberá pasportizáciou lesných ciest v západnej časti lesoparku v Ostrave-Porube. Teoretická časť obsahuje vysvetlenie pojmov súvisiacich s pasportizáciou, rozdelením lesných ciest a geodetickými prácami. V praktickej časti sa nachádzajú informácie o záujmovej lokalite, popis použitých meračských prístrojov a metód, postup pri vykonaných výpočtoch a grafickom spracovaní vo vhodnom počítačovom programe. Výsledkom je pasport lesných ciest s farebným odlíšením druhu povrchu ciest a pozdĺžny výškový profil.Prezenční544 - Institut geodézie a důlního měřictvívelmi dobř

Seedlings’ strategy to overcome a soil barrier

The impact of the plant hormone ethylene on seedling development has long been recognized; however, its ecophysiological relevance is unexplored. Three recent studies demonstrate that ethylene is a critical endogenous integrator of various environmental signals including mechanical stress, light, and oxygen availability during seedling germination and growth through the soil

Methods in Molecular Biology

The history of auxin and cytokinin biology including the initial discoveries by father–son duo Charles Darwin and Francis Darwin (1880), and Gottlieb Haberlandt (1919) is a beautiful demonstration of unceasing continuity of research. Novel findings are integrated into existing hypotheses and models and deepen our understanding of biological principles. At the same time new questions are triggered and hand to hand with this new methodologies are developed to address these new challenges

Spatiotemporal mechanisms of root branching

The fundamental tasks of the root system are, besides anchoring, mediating interactions between plant and soil and providing the plant with water and nutrients. The architecture of the root system is controlled by endogenous mechanisms that constantly integrate environmental signals, such as availability of nutrients and water. Extremely important for efficient soil exploitation and survival under less favorable conditions is the developmental flexibility of the root system that is largely determined by its postembryonic branching capacity. Modulation of initiation and outgrowth of lateral roots provides roots with an exceptional plasticity, allows optimal adjustment to underground heterogeneity, and enables effective soil exploitation and use of resources. Here we discuss recent advances in understanding the molecular mechanisms that shape the plant root system and integrate external cues to adapt to the changing environment

An analysis of results of measuring the speed passing through a material in a technological process

The process approach requires a smoothness and continuity for each individual technological /production process. From the viewpoint of ownership of each process a required input into the process technical and operation parameters for a required output of the process is important. From the viewpoint of monitoring a concrete process, the material entering the process having a temperature required by technological instruction is important.The speed of transition of a material through the technological mechanism should be constant and a product from the process should have required internal and external parameters. The speed is critical for the technological process. When using a measurement, values of speed are obtained, can be analysed from the point of view of variation in time and normality. For a comparison of real and required values, the box plot was prepared. The capability indexes were counted and the „overlaps” of tolerance interval for the required value of speed were compared

Systems approaches to study root architecture dynamics

The plant root system is essential for providing anchorage to the soil, supplying minerals and water, and synthesizing metabolites. It is a dynamic organ modulated by external cues such as environmental signals, water and nutrients availability, salinity and others. Lateral roots (LRs) are initiated from the primary root post-embryonically, after which they progress through discrete developmental stages which can be independently controlled, providing a high level of plasticity during root system formation. Within this review, main contributions are presented, from the classical forward genetic screens to the more recent high-throughput approaches, combined with computer model predictions, dissecting how LRs and thereby root system architecture is established and developed