Dobrushin-Kotecky-Shlosman theorem for polygonal Markov fields in the plane

We consider the so-called length-interacting Arak-Surgailis polygonal Markov fields with V-shaped nodes - a continuum and isometry invariant process in the plane sharing a number of properties with the two-dimensional Ising model. For these polygonal fields we establish a low-temperature phase separation theorem in the spirit of the Dobrushin-Kotecky-Shlosman theory, with the corresponding Wulff shape deteremined to be a disk due to the rotation invariant nature of the considered model. As an important tool replacing the classical cluster expansion techniques and very well suited for our geometric setting we use a graphical construction built on contour birth and death process, following the ideas of Fernandez, Ferrari and Garcia.Comment: 59 pages, new version revised according to the referee's suggestions and now publishe

State Amplification

We consider the problem of transmitting data at rate R over a state dependent channel p(y|x,s) with the state information available at the sender and at the same time conveying the information about the channel state itself to the receiver. The amount of state information that can be learned at the receiver is captured by the mutual information I(S^n; Y^n) between the state sequence S^n and the channel output Y^n. The optimal tradeoff is characterized between the information transmission rate R and the state uncertainty reduction rate \Delta, when the state information is either causally or noncausally available at the sender. This result is closely related and in a sense dual to a recent study by Merhav and Shamai, which solves the problem of masking the state information from the receiver rather than conveying it.Comment: 9 pages, 4 figures, submitted to IEEE Trans. Inform. Theory, revise

Factors influencing the survival of patients after radical surgery for gastric cancer

http://www.ester.ee/record=b1053255*es

Ammendatud freesturbaväljadel kasvatatava ahtalehise mustika masinviljelustehnoloogia

A Thesis for applying for the degree of Doctor of Philosophy in Engineering Sciences.Blueberry cultivation on milled peat fields is not particularly common in Estonia, while also not being very profitable. The basis for the development of blueberry cultivation is the mechanization and automation of production. This consists, on the one hand, in the development of machines and technical equipment with suitable productivity and, on the other hand, in reducing the operating costs of the machines. This doctoral thesis is largely based on six original publications and two intellectual properties. The aims of the thesis were to describe the technological peculiarities of a blueberry orchard planted on milled peat fields, to collect basic data for the development of a machinery which allows to reduce the importance of manual labour and to replace it with machinery to reduce the unit cost involved in technological operations and, thereby, to reduce manufacturing costs. In order to compile the initial task of designing a mechanized blueberry harvesting technology, the relationship between the various elements which are involved in blueberry cultivation (berry-plant-field-machine), all of which have been described, methodology has been developed to determine the physical properties of the blueberry plant. A methodology has been developed for determining the design and kinematic parameters of a motoblock-type blueberry harvester and for selecting the material of the harvester, the duration of the vernalisation period in Estonia was also determined. The patents that have been issued in the development of blueberry cultivation technology show that novel solutions have been elaborated. The studies that have been carried out and the solutions which have been developed could help in and become a prerequisite for the development of new equipment which will serve to foster the establishment of new blueberry plantations, first and foremost on milled peat fields, but also in terms of increasing profitability levels and reducing the ecological footprint in already established blueberry plantations.Kultuurmustikate kasvupind ja kogutoodang on maailmas oluliselt suurenenud. ÜRO Toidu- ja Põllumajandusorganisatsiooni andmetel kasvatati 2018. aastal kultuurmustikaid 113 000 hektaril ja kogutoodang ulatus 666 000 tonnini. Eestis moodustab mustikate hinnanguline kasvupind kuni 80 hektarit. Kultuurmustikate kasvatus ei ole Eestis praegu eriti tulus, kuna mustikaistandused on väikesed ja tööd tehakse peamiselt käsitsi. Mustikaviljeluse arenguks on vaja tootmist mehhaniseerimida ja automatiseerida. See seisneb sobiva tootlikkusega masinate ja tehniliste vahendite arendamises ning masinate kasutuskulude vähenemises. Väitekiri on koostatud kuue artikli ja kahe patendi põhjal. Uurimuses kirjeldati ammendatud freesturbaväljadele rajatud mustikaistanduse tehnoloogilisi iseärasusi. Uuringute käigus koguti lähteandmeid masinalise mustikaviljelusviisi väljatöötamiseks ning masinate ja tehniliste vahendite arendamiseks. Uurimistöö eesmärk oli suurendada masinate ja seadmete tootlikkust ja vähendada tööjõumahukust mustikaviljeluses tervikuna. Töö käigus kirjeldati mustikaviljelussüsteemi elementide (mari-taim-põld-masin) seoseid, määrati viljelussüsteemi elementide (mari, vars) mehaanikalised parameetrid, kavandati mustikakombaini uudse lahendusega korjeorgan, määrati vernalisatsiooniperioodi pikkus Eestis ja loodi tehnilised lahendused mustikakombainile, portatiivsele täppisväeturile, portatiivsele taimekaitsevahendi laoturile ja marjasorteerile tehnoloogiliste masinaliste tööoperatsioonide läbiviimiseks. Mustika masinviljelustehnoloogia arendusele väljastatud patendid annavad tunnistust uudsetest tehniliste lahendustest, mis võivad olla abiks ja eelduseks uute seadmete loomisel, mis aitavad kaasa uute mustikaistanduste loomisele eelkõige ammendunud freesturbaväljadel ning kasumlikkuse suurendamiseks ja ökoloogilise jalajälje vähendamiseks juba rajatud mustikaistandustes.Publication of this thesis is supported by Estonian University of Life Sciences and the Doctoral School of Energy and Geotechnology III and Estonian University of Life Sciences ASTRA project „Value-chain based bioeconomy“

Peritoneaalse kartsinomatoosi kombineeritud ravi tsütoreduktiivse operatsiooni ja intraperitoneaalse keemiaraviga

Levik kõhukelmele on seedetrakti ja günekoloogiliste kaugelearenenud kasvajate või nende taaspuhkemise üks sagedasi ilminguid. Peritoneaalse kartsinomatoosi tervistava ravi võimalused on olnud üsna piiratud ja prognoos seetõttu halb. Kirurgia, intensiivravi ja keemiaravi areng on andnud uue võimaluse kahe lokaalse agressiivse ravimeetodi – tsütoreduktiivse operatsiooni ja intraperitoneaalse keemiaravi – efektiivseks kombineerimiseks õigesti valitud haigetel, et tagada arvestatav elulemus võrreldes palliatiivse või toetava raviga. Nüüdseks on kogunenud piisavalt kliiniliste uuringute tulemusi selle lootustandva ravimeetodi teostatavuse, tõhususe ja ohutuse kohta. Mitme peritoneaalse kasvaja ravis on see meetod vähikeskustes praeguseks kujunenud standardiks. Eesti Arst 2009; 88(10):657−66

The politics of immigration discourse among the contemporary British right: migration from East and Central Europe and societal security

http://tartu.ester.ee/record=b2655942~S1*es

Non-homogeneous polygonal Markov fields in the plane: graphical representations and geometry of higher order correlations

We consider polygonal Markov fields originally introduced by Arak and Surgailis (1989). Our attention is focused on fields with nodes of order two, which can be regarded as continuum ensembles of non-intersecting contours in the plane, sharing a number of features with the two-dimensional Ising model. We introduce non-homogeneous version of polygonal fields in anisotropic enviroment. For these fields we provide a class of new graphical constructions and random dynamics. These include a generalised dynamic representation, generalised and defective disagreement loop dynamics as well as a generalised contour birth and death dynamics. Next, we use these constructions as tools to obtain new exact results on the geometry of higher order correlations of polygonal Markov fields in their consistent regime.Comment: 54 page