Modeling of Interaction between the Bridge Girder and Piers with the Use of Commercial Software

2019 ◽  
Vol 292 ◽  
pp. 128-133
Author(s):  
Peter Havlíček ◽  
Július Šoltész

Creating an analytical model for a bridge structure is one of the most challenging engineering tasks. For the design of all supporting elements and in all design situations., It is often necessary to create several models. One of the common modeling problems is related to the area between the bridge girder and piers. A Correct representation of the upper and lower structure interaction is particularly important in case of seismic design and the subsequent design of the piers. With a suitably built analytical model, it is possible to significantly reduce the horizontal effects from the upper structure and consequently, to reduce the shear strain of the piers. This contribution discusses the particularities of designing and modeling of bridges with elastomeric bearings. Further follows the description of the main methods for designing such structural elements in three commonly available commercial software based on the Finite Element Methods, hereinafter referred to as FEM. At the end of the paper the individual software options are compared.

Author(s):  
Anthony A. Paparo ◽  
Judith A. Murphy

The purpose of this study was to localize the red neuronal pigment in Mytilus edulis and examine its role in the control of lateral ciliary activity in the gill. The visceral ganglia (Vg) in the central nervous system show an over al red pigmentation. Most red pigments examined in squash preps and cryostat sec tions were localized in the neuronal cell bodies and proximal axon regions. Unstained cryostat sections showed highly localized patches of this pigment scattered throughout the cells in the form of dense granular masses about 5-7 um in diameter, with the individual granules ranging from 0.6-1.3 um in diame ter. Tissue stained with Gomori's method for Fe showed bright blue granular masses of about the same size and structure as previously seen in unstained cryostat sections.Thick section microanalysis (Fig.l) confirmed both the localization and presence of Fe in the nerve cell. These nerve cells of the Vg share with other pigmented photosensitive cells the common cytostructural feature of localization of absorbing molecules in intracellular organelles where they are tightly ordered in fine substructures.


Author(s):  
Andrew M. Yuengert

Although most economists are skeptical of or puzzled by the Catholic concept of the common good, a rejection of the economic approach as inimical to the common good would be hasty and counterproductive. Economic analysis can enrich the common good tradition in four ways. First, economics embodies a deep respect for economic agency and for the effects of policy and institutions on individual agents. Second, economics offers a rich literature on the nature of unplanned order and how it might be shaped by policy. Third, economics offers insight into the public and private provision of various kinds of goods (private, public, common pool resources). Fourth, recent work on the development and logic of institutions and norms emphasizes sustainability rooted in the good of the individual.


Author(s):  
Pete Dale

Numerous claims have been made by a wide range of commentators that punk is somehow “a folk music” of some kind. Doubtless there are several continuities. Indeed, both tend to encourage amateur music-making, both often have affiliations with the Left, and both emerge at least partly from a collective/anti-competitive approach to music-making. However, there are also significant tensions between punk and folk as ideas/ideals and as applied in practice. Most obviously, punk makes claims to a “year zero” creativity (despite inevitably offering re-presentation of at least some existing elements in every instance), whereas folk music is supposed to carry forward a tradition (which, thankfully, is more recognized in recent decades as a subject-to-change “living tradition” than was the case in folk’s more purist periods). Politically, meanwhile, postwar folk has tended more toward a socialist and/or Marxist orientation, both in the US and UK, whereas punk has at least rhetorically claimed to be in favor of “anarchy” (in the UK, in particular). Collective creativity and competitive tendencies also differ between the two (perceived) genre areas. Although the folk scene’s “floor singer” tradition offers a dispersal of expressive opportunity comparable in some ways to the “anyone can do it” idea that gets associated with punk, the creative expectation of the individual within the group differs between the two. Punk has some similarities to folk, then, but there are tensions, too, and these are well worth examining if one is serious about testing out the common claim, in both folk and punk, that “anyone can do it.”


1995 ◽  
Vol 4 (4) ◽  
pp. 516-523 ◽  
Author(s):  
Deborah Zion

Before sailing past the sirens' “flowery meadow,” Ulysses instructed his sailors to lash him to the mast so that he would not succumb to the siren's singing. His advance directive demonstrated that he valued his dispositional or long-term autonomy over his unquestioned right to make decisions. He also indicated to his oarsmen that he understood the nature of temptation and his inability to resist it. Ideas of autonomy and sexual choice are central to this discussion of new AIDS treatments, especially the trials of preventative vaccines. Questions arise over the rights of individuals and the extent that these should be limited by concerns of the gay community. Should the gay community intervene in the risky decisions of individuals if no explicit advance directive exists? If so, how do they justify their paternalism? Could their aims not be better served through strengthening the individual dispositional autonomy of trial participants rather than making specific claims about the common good?


1959 ◽  
Vol 5 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Maurice H. Bernstein ◽  
Daniel C. Pease

The fine structure of the tapetum of the cat eye has been investigated by electron microscopy. The tapetum is made up of modified choroidal cells, seen as polygonal plates grouped around penetrating blood vessels which terminate in the anastomosing capillary network of the choriocapillaris. The tapetal cells are rectangular in cross-section, set in regular brick-like rows, and attain a depth of some thirty-five cell layers in the central region. This number is gradually reduced peripherally, and is replaced at the margin of the tapetum by normal choroidal tissue. The individual cells are packed with long slender rods 0.1 µ by 4 to 5 µ. The rods are packed in groups and with their long axes oriented roughly parallel to the plane of the retinal surface. Each cell contains several such groups. Cells at the periphery or in the outer layers of the tapetum are frequently seen to contain both tapetal rods and melanin granules, the latter typical of the choroidal melanocytes. Also melanocyte granules may have intermediate shapes. These observations plus the similar density of the two inclusions lead to the belief that the tapetal rods may be melanin derivatives. A fibrous connective tissue layer lies between the tapetum and the retina. The subretinal capillary network, the choriocapillaris, rests on this layer and is covered by the basement membrane of the retinal epithelium. The cytoplasm of the retinal epithelium exhibits marked absorptive modifications where it comes in contact with the vessels of the choriocapillaris. This fibrous layer and the basement membrane of the retinal epithelium apparently comprise the structural elements of Bruch's membrane.


2021 ◽  
Vol 5 (1) ◽  
pp. 4-39
Author(s):  
Nadia Cauchi

This study looks at the effects of the combined practice of mindful meditation and aromatherapy on the wellbeing of MCAST ICS lecturers, potentially providing resources that can help them deal with various stressors. Each practice is supported with literature underlining its effects towards a holistic wellbeing. The researcher uses a qualitative narrative inquiry approach to draw meaning and understanding out of the participants’ experiences. Three MCAST ICS lecturers participated in this study. Their background in health care enables them to relate better with the benefits of mindful meditation and aromatherapy. The research design of this study consists of four stages; a pre-session held with the three participants, weekly mindful meditation sessions for six weeks, individual interviews with each participant, followed by a focus group. Three of the six sessions included aromatherapy and a mindful journal was kept throughout the sessions. The analysis format could either develop as an analysis of narrative or narrative of analysis. In this study both formats were used, however, due to the word count limit only the analysis of narrative is seen. The researcher elicited whole segments from the individual transcripts to develop various themes. To examine the data for the emergent themes the researcher chose to use thematic narrative analysis as it focuses on the ‘told’ (Riessman 2008). In this case the ‘told’ is what helped identify the common patterns found across the narratives. As themes started to emerge, whenever possible the researcher used the MAXQDA software to facilitate the process. Mindful meditation was found to lead to a series of events that enhance self-awareness, thus enhancing holistic wellbeing and positively effecting the individual’s approach towards work and family. This can be achieved because mindful meditation has the potential to enhance one’s social skills, soft skills, and emotional intelligence. Furthermore, combining aromatherapy with mindful meditation was found to positively enhance one’s experience. However, it was not the only decisive factor since the ambience was also an influencer.


Author(s):  
OLGA MOSKALENKO ◽  
ROMAN YASKEVICH

A review of the literature on the current problem of medicine is presented. Arterial hypertension is one of the common chronic diseases for which the current goal of therapy is not recovery, but improvement of circulatory function with a satisfactory quality of life. The study of QOL and the factors influencing it can contribute to an increase in the individual effectiveness of treatment and complex rehabilitation of patients suffering from this pathology.


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