Carbon and oxygen isotopic composition of the Middle Miocene Badenian gypsum-associated limestones of West Ukraine

The middle Miocene Badenian basin of the Carpathian Foredeep is characterized by complex sedimentary and diagenetic carbonate-evaporite transitions. Six locations have been selected to evaluate the controls on the carbon and oxygen isotopic composition of the Badenian gypsum-associated limestones of the Tyras Formation in West Ukraine. At three locations marine limestones overlie the gypsum, at one location (Anadoly) the gypsum-associated limestones are polygenic, and at two localities (Pyshchatyntsi and Lozyna) gypsum deposits are lacking. The studied limestones have originated as primary, mostly peloidal carbonates as well as secondary carbonates formed by hypogene sulphate calcitisation. They show a wide range of d13C (from from -0.9‰ to -39.8‰) and d18O values (from 0.9‰ to -12.2‰). The Badenian limestones formed in marine environments (either as deposits accumulated at the bottom of the sea or forming the infillings of solution cavities within gypsum) have less negative d18O values compared to predominantly diagenetic formations. Wide ranges and usually very negative d13C values and low d18O values of those limestones indicate that they suffered important meteoric diagenesis as supported by common sparitic fabrics. In addition, a large range of d13C values even in the group of samples characterized by less-negative d18O values shows that bacterial sulphate reduction and methane oxidation were active processes in the pore fluids of the Tyras Formation. Very low carbon isotopic compositions (d13C values from -22 to -40‰) of some sparitic limestones in the studied sections indicate the occurrence of oxidized methane within the diagenetic environment. Accordingly, the isotopic signatures of the studied limestones are a combination of both primary and secondary processes, the latter having a primordial importance. The common occurrence of similar negative d13C and d18O values in evaporite-related carbonates in other Miocene evaporite basins suggest that extensive dissolution- reprecipitation in diagenetic or vadose-phreatic environments were common in evaporite-related carbonates

Agent based approach to University Timetabling Problem

A concept of agent-based approach to timetabling problem is presented. Based on the problem description and with its formalization the term agent is introduced. Agents act on behalf of entities taking part in the timetabling process (activities, rooms and students) and they interact to maximize their own utility. Also a brief overview of existing approaches is presented

The new computer program for three dimensional relativistic hydrodynamical model

An effective computer program for three dimensional relativistic hydrodynamical model has been developed. It implements a new approach to the early hot phase of relativistic heavy-ion collisions. The computer program simulates time-space evolution of nuclear matter in terms of ideal-fluid dynamics. Equations of motions of hydrodynamics are solved making use of finite difference methods. Commonly-used algorithms of numerical relativistic hydrodynamics RHLLE and MUSTA-FORCE have been applied in simulations. To speed-up calculations, parallel processing has been made available for solving hydrodynamical equations. The test results of simulations for 3D, 2D and Bjorken expansion are reported in this paper. As a next step we plan to implement the hadronization algorithm by implementing the continuous particle emission for freeze-out and comparing it with Cooper-Frye formula.Comment: Quark Matter 2005 Poster Session Proceedin

FESA 3.0 : Overcoming the XML/RDBMS Impedance Mismatch

The Front End System Architecture (FESA) framework developed at CERN takes an XML-centric approach to modelling accelerator equipment software. Among other techniques, XML Schema is used for abstract model validation, while XSLT drives the generation of code. At the same time all the information generated and used by the FESA framework is just a relatively small subset of a much wider realm of Controls Configuration data stored in a dedicated database and represented as a sophisticated relational model. Some data transformations occur in the XML universe, while others are handled by the database, depending on which technology is a better fit for the task at hand. This paper describes our approach to dealing with what we call the “XML/Relational impedance mismatch” – by analogy to Object/Relational impedance mismatch – that is how to best leverage the power of an RDBMS as a back-end for an XML-driven framework. We discuss which techniques work best for us, what to avoid, where the potential pitfalls lie. All this is based on several years of experience with a living system used to control the world’s biggest accelerator complex

JDATAVIEWER – JAVA-Based Charting Library

The JDataViewer is a Java-based charting library developed at CERN, with powerful, extensible and easy to use function editing capabilities. Function edition is heavily used in Control System applications, but poorly supported in products available on the market. The JDataViewer enables adding, removing and modifying function points graphically (using a mouse) or by editing a table of values. Custom edition strategies are supported: developer can specify an algorithm that reacts to the modification of a given point in the function by automatically adapting all other points. The library provides all typical 2D plotting types (scatter, polyline, area, bar, HiLo, contour), as well as data point annotations and data indicators. It also supports common interactors to zoom and move the visible view, or to select and highlight function segments. A clear API is provided to configure and customize all chart elements (colors, fonts, data ranges ...) programmatically, and to integrate non-standard rendering types, interactors or chart decorations (custom drawings). Last but not least, the library offers class-leading performance

ТЕОРЕТИКО-КОНЦЕПТУАЛЬНА СУТНІСТЬ СТРАТЕГІЇ ТА СТРАТЕГІЧНОГО УПРАВЛІННЯ БІЗНЕСОМ В УМОВАХ СУЧАСНОЇ ЕКОНОМІКИ

The purpose of the scientific research is to study the theoretical and conceptual aspect of strategy and strategic management in the operation of private business, and develop recommendations on their actual interpretation in the modern economy. The methodological aspect of the work is formed by theoretical conclusions and generalizations of the economic science and scientific works on the basis of strategy and strategic management in the operation of private business. The work applies logical, comparative and complex approaches as well as empirical research, comparison and complex analysis methods.During the research, significant scientific developments regarding the core of strategy and strategic management were analyzed and structured. The aspects of the main structural elements of the strategy were described: policy, tactics, management procedures, planning and budgeting. The essence of the subject (solutions), which are recommended for creating effective business management strategies, is proposed. Scientific approaches to understanding the core of strategic management are studied.On the basis of the conducted research, scientific approaches to strategy and strategic management are offered to group on the basis of complexity and the consideration of aspects of enterprise activity on: point approaches, approaches of relativity, panoramic approaches. The author's definition of the concept of "strategy" and "strategic management" is presented and the attention is focused on their short-, medium- and long-term perspective.The scientific value of the research results lies on their focus on solving the problem of searching for the concepts of an effective strategy and strategic business management, which can ensure the competitiveness and improvement of the financial results of the private sector, as well as the growth of the national economy.The purpose of the scientific research is to study the theoretical and conceptual aspect of strategy and strategic management in the operation of private business, and develop recommendations on their actual interpretation in the modern economy. The methodological aspect of the work is formed by theoretical conclusions and generalizations of the economic science and scientific works on the basis of strategy and strategic management in the operation of private business. The work applies logical, comparative and complex approaches as well as empirical research, comparison and complex analysis methods.During the research, significant scientific developments regarding the core of strategy and strategic management were analyzed and structured. The aspects of the main structural elements of the strategy were described: policy, tactics, management procedures, planning and budgeting. The essence of the subject (solutions), which are recommended for creating effective business management strategies, is proposed. Scientific approaches to understanding the core of strategic management are studied.On the basis of the conducted research, scientific approaches to strategy and strategic management are offered to group on the basis of complexity and the consideration of aspects of enterprise activity on: point approaches, approaches of relativity, panoramic approaches. The author's definition of the concept of "strategy" and "strategic management" is presented and the attention is focused on their short-, medium- and long-term perspective.The scientific value of the research results lies on their focus on solving the problem of searching for the concepts of an effective strategy and strategic business management, which can ensure the competitiveness and improvement of the financial results of the private sector, as well as the growth of the national economy

The importance of layout and configuration data for flexibility during commissionning and operation of the LHC machine protection systems

Due to the large stored energies in both magnets and particle beams, the Large Hadron Collider (LHC) requires a large inventory of machine protection systems, as e.g. powering interlock systems, based on a series of distributed industrial controllers for the protection of the more than 10'000 normal and superconducting magnets. Such systems are required to be at the same time fast, reliable and secure but also flexible and configurable to allow for automated commissioning, remote monitoring and optimization during later operation. Based on the generic hardware architecture of the LHC machine protection systems presented at EPAC 2002 [2] and ICALEPS 2003, the use of configuration data for protection systems in view of the required reliability and safety is discussed. To achieve the very high level of reliability, it is required to use a coherent description of the layout of the accelerator components and of the associated machine protection architecture and their logical interconnections. Mechanisms to guarantee coherency of data and repositories and secure configuration of safety critical systems are presented. This paper focuses on the first system being commissioned, the complex magnet powering system, to become fully operational before first injection of beam into the LHC

Accelerator Data Foundation : How it all fits together

Since 2003, a coherent data management approach was envisaged for the needs of installing, commissioning, operating and maintaining the LHC. Data repositories in the distinct domains of physical equipment, installed components, controls configuration and operational data have been established to cater for these different aspects. The interdependencies between the domains have been implemented as a distributed database. This approach, based on a very wide data foundation, has been used for the LHC and is being extended to the CERN accelerator complex

Variaciones espaciales y temporales del registro del límite K/T en Haiti: implicaciones acerca del evento o eventos

El registro en la capa del límite K/T (KTB), en diferentes localidades de la Península Meridional de Haití, muestra claras evidencias de disrupciones físicas causadas por el impacto postulado de un bólico al final del Maastrichtiense. Tanto el registro bioestratigráfico como el litológico de la capa KTB, en diferentes localidades, muestra también diversos grados de mezcla, con componentes faunísticos de edades congruentes con los bioeventos característicos de la transición del límite, equivalentes a la parte terminal de la Zona de Abathomphalus mayaroensis y partes de las Zonas de Guembelitria cretacea y de Parvularugoglobigerina eugubina. La nanoflora calcárea también muestra taxones de la transición, concurrentes con los datos de foraminíferos, e indicativos de las Subzonas de Micula murus y Micula prinsii, así como de la Subzona de Cruciplacolithus primus (CP1a), del Paleoceno basal. La capa del límite tiene variaciones en su potencia, con un máximo de 75cm en el estratotipo de la Formación Beloc, y a techo de la capa principal tectítica hay un máximo de iridio. Los análisis geoquímicos y la datación radiométrica han demostrado también que las esférulas son tectitas (Premo e Izett, 1991) que pueden estar relacionadas cronológicamente con el evento de impacto registrado en Chicxulub, Yucatán, México, hace 65 Ma. Aún más, las delicadas estructuras sedimentarias primarias en la capa del límite son constantes en todos los afloramientos, aunque hay diferencias espaciales incluso a corta distancia. Además, en las áreas adyacentes al estratotipo (Platon Piton y Madame Toussaint) se encuentra una capa volcanogénica, bajo el nivel tectítico principal relacionado con el evento de Chicxulub, que muestra una laminación cruzada, tanto conspicua como críptica, indicativa de procesos de flujo complejos, multifásicos y subacuáticos que afectaron a la sedimentación de forma parecida a la del lecho KTB. Se conocen tales estructuras como características de la acción de ondas oscilantes sobre la cohesión de los sedimentos. El movimiento de las aguas asociado con un seiche es el único análogo actual conocido de un flujo subacuático que proporcione un mecanismo plausible para explicar el que varios niveles de la columna de agua, en una gran cuenca, pueden oscilar para desarrollar las estructuras observadas. Dada la magnitud del impacto del bólido, debieron desarrollarse ‘megaseiches’ en los océanos a escala mundial y, subsecuéntemente, se producirían otros ‘megaseiches’ más localizados durante los reajustes principales de la corteza. Esos fenómenos pueden así explicar la heterogeneidad de pautas y discrepancias faunísticas observadas en varias localidades del KTB, de distinta profundidad de depósito, en el mundo. Las estructuras representan un registro de los movimientos del agua y de la resuspensión de los sedimentos en momentos diferentes. Tal como se ha observado en seiches modernos a pequeña escala, la duración y atenuación de los movimientos del agua y la magnitud de la tracción y resuspensión estuvieron controlados por diversos modos oscilatorios que dieron lugar a complejas estructuras sedimentarias y al retrabajamiento de los microfósiles