scholarly journals SLR and GNSS Test Field for Global Geodetic Network Assessment in Riga

2020 ◽  
Author(s):  
Janis Kaminskis ◽  
Lubova Sulakova ◽  
Kalvis Salmins ◽  
Janis Kaulins ◽  
Lauris Goldbergs
Keyword(s):  
Geodetic Network ◽  
Point Of View ◽  
Global Perspective ◽  
Test Field ◽  
Term Change ◽  
Space Objects ◽  
Exact Position ◽  
Preparatory Work ◽  
Scientific Achievements

The basic aim is to contribute to the world geodetic space in line with today’s scientific achievements. Riga geodynamic site is a thankful place for this, as it has long-term SLR observations and the longest GNSS records in Latvia. The goal is establishment of regional long-term geodetic monitoring station at LU Institute of Astronomy, Riga, Kandavas street 2, by joining at least two space geodetic technologies – the already installed laser-telescope LS-105 and GNSS − collocated, but not sufficiently linked. The capability of geodetic GNSS observations would uniquely complement Riga GNSS station and allow to determine more accurate coordinates of the LS-105 laser telescope and the long-term changes needed to accurately measure the positions of Earth satellites and other similar space objects. GNSS Observation Station will contribute to the development of positioning and position long-term change to accuracy of less than 1mm, one of the current global goals of GGOS. We plan to solve the problem with the exact position of the telescope LS-105 it will contribute to the development of scientific research and applied potential of the LU Satellite Laser Ranging station. From the national point of view geodetic station serves as an important point for Latvian National Geodetic Network, long term large infrastructure planning, engineering communications, cartography, etc. From a global perspective the station will be one of very few such stations in the region and the only one in the Baltics capable of valuable contribution to ITRF network. Preparatory work for the study has started by selecting and consolidating geodetic points for further measurements.

Modelling Study to Evaluate Two Variants for Accessing a Deep Geological Repository From the Point of View of Long-Term Safety

2013 ◽  
Author(s):  
Andreas Poller ◽  
Paul Smith ◽  
Gerhard Mayer ◽  
Mohamed Hayek ◽  
Jürg W. Schneider ◽  
...  
Keyword(s):  
Network Flow ◽  
Flow Model ◽  
Transport Model ◽  
Point Of View ◽  
Access Route ◽  
Deep Geological Repository ◽  
Acceptable Solution ◽  
Geological Repository ◽  
Exact Position

Siting a deep geological repository for radioactive waste essentially involves two interrelated steps: deciding on an appropriate geological environment for the underground facilities and selecting a suitable location for the associated surface facility. An acceptable solution is more easily achieved if some flexibility exists for siting the surface facility, irrespective of the exact position of the underground facilities. Such flexibility is available if a ramp is used as the main access route from the surface facility to the underground facilities. Another option is to use a combination of shafts and (sub)horizontal tunnels as the main access route. Both variants include shafts for ventilation, etc. In this paper, the two variants (i) main access via ramp and (ii) main access via shaft are compared in terms of long-term safety. To this end, the entire network of underground tunnels of a deep geological repository is implemented in an analytical resistor network flow model. Radionuclide release through the tunnel system and the host rock is then calculated with a numerical network transport model, using as input the results from the flow model. The results clearly indicate that, even in case of hypothetically deficient horizontal and subhorizontal sealing elements, the choice between ramp and shaft as the main access route is irrelevant to long-term safety.

Local People and Global Goings-On

2020 ◽  
pp. 39-65
Author(s):  
Sally Falk Moore
Keyword(s):  
Local Development ◽  
Cumulative Effect ◽  
Global Perspective ◽  
Subsistence Economy ◽  
Running Water ◽  
African People ◽  
Mount Kilimanjaro ◽  
Term Change ◽  
History Of

This chapter examines the local development of global legal pluralism by looking at the history of the rural Chagga population of Mount Kilimanjaro. The Chagga were once a relatively remote African people without modern amenities, running water, or electricity, possessing only a subsistence economy. Today, the Chagga society has been integrated with the world. Several confluent grand-scale matters emerge in the account of the growth of Chagga translocal connections. A global perspective on these many separate changes enables one to see them together as having a cumulative effect. Beginning with a low-intensity trading connection with the coast that had its own rules of engagement, continuing with colonial contacts, the involvement with coffee commerce, and the introduction of more and more education, the story ends with a huge, nationally legislated program of government which is part of a legally plural world. Indeed, cumulative long-term change in the direction of globalization came about on Kilimanjaro through many particular occurrences. Globalization is not a simple unitary phenomenon; as a process, it can start in many ways and have many different consequences.

scholarly journals Internationalization through the Lens: Nineteenth- and Twentieth-Century Art Periodicals and Decentred Circulation

2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Béatrice Joyeux-Prunel
Keyword(s):  
Social History ◽  
Modern Art ◽  
Point Of View ◽  
Global Perspective ◽  
Avant Garde ◽  
The Arts ◽  
History Of ◽  
Median Approach ◽  
The 1960S

Periodicals are an exceptional source for the study of artistic and cultural internationalization. Their content, traditional for occasional research, allows us to reconstruct the chronicle of events and artistic debates of an era, a milieu or a metropolis. However, periodicals are also available as commensurable sources, at an international scale and in the long term. As such, art magazines in particular offer a global perspective on artistic internationalization in the contemporary era. This article proposes a new reading of the history of the internationalization of modern art and the avant-garde through the prism of art periodicals, from the 1860s to the end of the 1960s. We combine three interrelated and complementary levels: the microhistory of transfers between journals, the median approach of social history, and the distant point of view of cartographic study and network analysis. The result is a dynamic and decentralized idea of world geopolitics for the arts, far from the canonical narrative that turns certain centres into the dominant producers of innovation, where peripheries are supposed to remain mere imitators. *** Les périodiques sont une source exceptionnelle pour l’étude de l’internationalisation artistique et culturelle. Leur contenu, traditionnellement utilisé pour des recherches ponctuelles, permet de reconstituer la chronique des événements et des débats artistiques d’une époque, d’un milieu ou d’une métropole. Cependant les périodiques constituent aussi des sources commensurables, à l’échelle internationale et sur la longue période. À ce titre, les revues d’art en particulier offrent une perspective globale sur l’internationalisation artistique à l’ère contemporaine. Cet article propose de relire l’histoire de l’internationalisation de l’art moderne et de l’avant-garde au prisme des périodiques d’art, des années 1860 à la fin des années 1960. Trois échelles complémentaires sont articulées: la micro-histoire des transferts entre revues, l’approche médiane de l’histoire sociale, et le point de vue lointain de l’étude cartographique et de l’analyse des réseaux. Il en résulte une idée dynamique et décentrée de la géopolitique mondiale des arts, loin du récit canonique qui fait de certains centres les producteurs dominants de l’innovation tandis que les périphéries n’auraient été qu’imitatrices.

ADVANCES IN THE HISTORY OF MAGIC, WITCHCRAFT, AND RELIGION

2020 ◽  
Keyword(s):  
Early Modern ◽  
Point Of View ◽  
Global Perspective ◽  
Religious Practices ◽  
Classical Period ◽  
Modern Times ◽  
Construction Of Identity ◽  
History Of ◽  
Early Modern Times

This series aims at advancing knowledge and the understanding of official and unofficial religious practices and their relationship with culture, society, and the construction of identity, from the Classical period through the Early modern times, with particular emphasis on beliefs, rites, institutions, emotions, cultural and social fractures, especially those revolving around the domains of magic, witchcraft, and religion. The series concentrates on Europe, although it welcomes a long-term global perspective and a comparative point of view.

Vivid Imagers Are Better at Detecting Salient Changes

2006 ◽  
Vol 27 (4) ◽  
pp. 218-228 ◽  
Author(s):  
Paul Rodway ◽  
Karen Gillies ◽  
Astrid Schepman
Keyword(s):  
Individual Differences ◽  
Change Detection ◽  
Visual Imagery ◽  
Detection Task ◽  
Level Of Detail ◽  
Detection Accuracy ◽  
Change Detection Task ◽  
Term Change ◽  
High Level

This study examined whether individual differences in the vividness of visual imagery influenced performance on a novel long-term change detection task. Participants were presented with a sequence of pictures, with each picture and its title displayed for 17  s, and then presented with changed or unchanged versions of those pictures and asked to detect whether the picture had been changed. Cuing the retrieval of the picture's image, by presenting the picture's title before the arrival of the changed picture, facilitated change detection accuracy. This suggests that the retrieval of the picture's representation immunizes it against overwriting by the arrival of the changed picture. The high and low vividness participants did not differ in overall levels of change detection accuracy. However, in replication of Gur and Hilgard (1975) , high vividness participants were significantly more accurate at detecting salient changes to pictures compared to low vividness participants. The results suggest that vivid images are not characterised by a high level of detail and that vivid imagery enhances memory for the salient aspects of a scene but not all of the details of a scene. Possible causes of this difference, and how they may lead to an understanding of individual differences in change detection, are considered.

Selective statistical estimates of multi-year monthly concentrations of biogenous pollution of small rivers of the Northwest zone of the Russian Federation

2020 ◽  
pp. 9-13
Author(s):  
Sergey Kovalenko
Keyword(s):  
Statistical Processing ◽  
Point Of View ◽  
Small Rivers ◽  
Statistical Parameters ◽  
Monthly Data ◽  
Statistical Estimates ◽  
Scientific Task ◽  
The Russian Federation ◽  
Agricultural Areas

The management of surface watercourses is an urgent scientific task. The article presents the results of statistical processing of long-term monthly data of field observations of hydrological and hydrochemical parameters along the Upper Yerga small river in the Vologda region. Sampling estimates of statistical parameters are obtained, autocorrelation and correlation analyzes are performed. The limiting periods from the point of view of pollution for water receivers receiving wastewater from drained agricultural areas are identified.

Masonry: the brittle or plastic material?

2019 ◽  
pp. 22-28
Keyword(s):  
Plastic Material ◽  
Experimental Studies ◽  
Point Of View ◽  
Plastic Properties ◽  
Plastic Deformations ◽  
Base Materials ◽  
Stress States ◽  
Creep Deformations ◽  
Structural Point

The results of experimental studies of masonry on the action of dynamic and static (short-term and long-term) loads are presented. The possibility of plastic deformations in the masonry is analyzed for different types of force effects. The falsity of the proposed approach to the estimation of the coefficient of plasticity of masonry, taking into account the ratio of elastic and total deformations of the masonry is noted. The study of the works of Soviet scientists revealed that the masonry under the action of seismic loads refers to brittle materials in the complete absence of plastic properties in it in the process of instantaneous application of forces. For the cases of uniaxial and plane stress states of the masonry, data on the coefficient of plasticity obtained from the experiment are presented. On the basis of experimental studies the influence of the strength of the so-called base materials (brick, mortar) on the bearing capacity of the masonry, regardless of the nature of the application of forces and the type of its stress state, is noted. The analysis of works of prof. S. V. Polyakov makes it possible to draw a conclusion that at the long application of the load, characteristic for the masonry are not plastic deformations, but creep deformations. It is shown that the proposals of some authors on the need to reduce the level of adhesion of the mortar to the brick for the masonry erected in earthquake-prone regions in order to improve its plastic properties are erroneous both from the structural point of view and from the point of view of ensuring the seismic resistance of structures. It is noted that the proposal to assess the plasticity of the masonry of ceramic brick walls and large-format ceramic stone with a voidness of more than 20% is incorrect, and does not meet the work of the masonry of hollow material. On the basis of the analysis of a large number of research works it is concluded about the fragile work of masonry.

Integrating Focusing and Differentiation: A Therapeutic Path for Couples in Intimate Relationships

2018 ◽  
Vol 3 ◽  
Author(s):  
Evi Zohar
Keyword(s):  
Couples Therapy ◽  
Therapeutic Potential ◽  
Well Being ◽  
Point Of View ◽  
The Body ◽  
Self Awareness ◽  
Emotional Healing ◽  
Felt Sense ◽  
Inner World

Continuing the workshop I've given in the WPC Paris (2017), this article elaborates my discussion of the way I interlace Focusing with Differentiation Based Couples Therapy (Megged, 2017) under the systemic view, in order to facilitate processes of change and healing in working with intimate couples. This article presents the theory and rationale of integrating Differentiation (Bowen, 1978; Schnarch, 2009; Megged, 2017) and Focusing (Gendlin, 1981) approaches, and its therapeutic potential in couple's therapy. It is written from the point of view of a practicing professional in order to illustrate the experiential nature and dynamics of the suggested therapeutic path. Differentiation is a key to mutuality. It offers a solution to the central struggle of any long term intimate relationship: balancing two basic life forces - the drive for individuality and the drive for togetherness (Schnarch, 2009). Focusing is a body-oriented process of self-awareness and emotional healing, in which one learns to pay attention to the body and the ‘Felt Sense’, in order to unfold the implicit, keep it in motion at the precise pace it needs for carrying the next step forward (Gendlin, 1996). Combining Focusing and Differentiation perspectives can cultivate the kind of relationship where a conflict can be constructively and successfully held in the inner world of each partner, while taking into consideration the others' well-being. This creates the possibility for two people to build a mutual emotional field, open to changes, permeable and resilient.

Social Cohesion, Breaks, and Transformations in Italy, 535–600

2018 ◽  
Author(s):  
Walter Pohl
Keyword(s):  
The Political ◽  
Late Antique ◽  
Religious Context ◽  
Ancient Society ◽  
Complex Process ◽  
Term Change ◽  
Two Generations ◽  
Classical Culture

When the Gothic War began in Italy in 535, the country still conserved many features of classical culture and late antique administration. Much of that was lost in the political upheavals of the following decades. Building on Chris Wickham’s work, this contribution sketches an integrated perspective of these changes, attempting to relate the contingency of events to the logic of long-term change, discussing political options in relation to military and economic means, and asking in what ways the erosion of consensus may be understood in a cultural and religious context. What was the role of military entrepreneurs of more or less barbarian or Roman extraction in the distribution or destruction of resources? How did Christianity contribute to the transformation of ancient society? The old model of barbarian invasions can contribute little to understanding this complex process. It is remarkable that for two generations, all political strategies in Italy ultimately failed.

Sign in / Sign up

Export Citation Format

Share Document