scholarly journals CONSTRUCTIVE AND PROBABILISTIC ANALYSIS OF EXCAVATED PILES WITH LOST METALLIC SHIRT

Revista EIA ◽  
2021 ◽  
Vol 19 (37) ◽  
Author(s):  
Lucas Eugênio Rodrigues ◽  
Aílton Carlos Dos Santos Brandão ◽  
George Fernandes Azevedo

This work brings in its scope some analyzes around the constructive methodology of a case study that refers to the implantation of a dolphin (a structure that in this case has the purpose of mooring ships) at Pier III, located in Ponta da Madeira Maritime Terminal, in the city of São Luís, Maranhão, and with a focus on the process of building its infrastructure, more precisely the adopted foundation. This type of work, being port and in a maritime environment is called offshore, the foundation used in this case is the deep type, more precisely called piles excavated with a lost metallic shirt whose constructional scope will be detailed in this work, from the driving from shirts to concreting the piles that made up the system. The theme is approached from a practical and theoretical point of view, with a probabilistic study of the load capacity of foundations based on geometrical data from surveys carried out in the region, in order to define results that include any variability of the location and guarantee functionality and safety necessary for the foundation to achieve the project's objectives and be optimized throughout its useful life. The analysis of the probability of rupture was made using the semi-empirical method of Aoki-Velloso, combined with the First Order Second Moment method in order to compare the result achieved with the established parameter values. The work also aims to serve as a basis for future guidance and guidance on the topic, which does not have such a vast bibliography, mainly in view of the installation of new similar projects in the region and in other locations.

2018 ◽  
Vol 7 (9) ◽  
pp. 159
Author(s):  
Suchandra Paul

Skill shortage is a crucial social issue which needs to be analyzed thoroughly in any organization. In this paper, the problems related to the skill shortage are analyzed and possible solutions are provided to deal with the problem of skill shortages effectively. This paper will facilitate in helping the organization to find the right talent for the organization thus removing or decreasing the problem of skill shortages. The paper begins with the importance of skills shortage from a theoretical point of view. The problems associated are highlighted and analyzed. The factors which are an integral part of skill shortages are elaborated. Also, an in-depth analysis is carried out by considering the organizations, Tata Consultancy Services and Infosys as a case study. In the final section, various solutions and approaches are laid down to tackle the problems incorporated with skill shortages.


2012 ◽  
Vol 594-597 ◽  
pp. 730-733 ◽  
Author(s):  
Hua Zhi Li ◽  
Zhe Liu ◽  
Jia Yong Miao

The tube and coupled scaffold is widely used in the construction of building, bridge, sports stadium etc, due to the advantage of easily assembling, high load capacity and good overall stiffness. However as a very important temporary structure in the construction, the semi-empirical method has been used for the calculation of ultimate load capacity (ULC), whether the calculation results are acceptable is not given too much attention. To ascertain the safety of using process, the FEM code-Midas is used to investigate and compare the stability and ultimate load analysis method of scaffold, and the impacting factors, such as the span, step distance, height, and width of scaffold, are discussed, the varying process and trend is described in this paper.


2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Yankel FIJALKOW

This article proposes a theoretical point of view in order to show the importance of the collective memory and the urban narrative in the strategic approach of the urban project. The capacity of a municipality to build a local narrative joining the past, the memory and the project, is examined in the second part of the article, in a case study of a collectivity confronted with the project of the Grand Paris and strong socio-spatial transformation since 1950. The conclusions of thirty deep interviews, conducted on the people involved in the city organization allow to differentiate legitimated and rejected places in the spaces of remembering, and the difficulties of this kind of municipalities to be pro active in the Grand Paris project.


2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Grégory BUSQUET

This article proposes a theoretical point of view in order to show the importance of the collective memory and the urban narrative in the strategic approach of the urban project. The capacity of a municipality to build a local narrative joining the past, the memory and the project, is examined in the second part of the article, in a case study of a collectivity confronted with the project of the Grand Paris and strong socio-spatial transformation since 1950. The conclusions of thirty deep interviews, conducted on the people involved in the city organization allow to differentiate legitimated and rejected places in the spaces of remembering, and the difficulties of this kind of municipalities to be pro active in the Grand Paris project.


1. The object of this investigation is to establish a formula for the longitudinal spherical aberration of rays which traverse a symmetrical optical system in an axial plane that shall be capable of fairly easy computation for any combination of lenses, and at the same time shall be accurate to the second order and free from certain important difficulties of convergency which occur in certain neighbourhoods when we attempt to use for the longitudinal aberration the method of aberration of successive orders. From the point of view of the optical designer, the usual theory of aberrations, which, for all practical purposes, is largely restricted to the first order, is known to give an unsatisfactory approximation. In practice, the designer adopts a semi-empirical method of tracing a number of rays through the system by means of the trigonometrical equations, a method which is laborious and lengthy, and which can at best give only incomplete informa­tion and very limited guidance for effecting improvements.


2020 ◽  
Vol 633 ◽  
pp. A103
Author(s):  
Tao Chen ◽  
Yi Luo ◽  
Aigen Li

Aims. Due to the limitations of current computational technology, the fragmentation and isomerization products of vibrationally-excited polycyclic aromatic hydrocarbon (PAH) molecules and their derivatives have been poorly studied. In this work, we investigate the intermediate products of PAHs and their derivatives as well as the gas-phase reactions relevant to the interstellar medium, with coronene as a case study. Methods. Based on the semi-empirical method of PM3 as implemented in the CP2K program, molecular dynamics simulations were performed to model the major processes (e.g., vibrations, fragmentations, and isomerizations) of coronene and its derivatives (e.g., methylated coronene, hydrogenated coronene, dehydrogenated coronene, nitrogen-substituted coronene, and oxygen-substituted coronene) at temperatures of 3000 K and 4000 K. Results. We find that the anharmonic effects are crucial for the simulation of vibrational excitation. For the molecules studied here, H2, CO, HCN, and CH2 are the major fragments. Following the dissociation of these small units, most of the molecules could maintain their ring structures, but a few molecules would completely break into carbon chains. The transformation from a hexagon to a pentagon or a heptagon may occur and the heteroatomic substitutions (e.g., N- or O-substitutions) would facilitate the transformation.


2013 ◽  
Vol 20 (3) ◽  
pp. 259-277 ◽  
Author(s):  
Georges Gallais-Hamonno ◽  
Christian Rietsch

The failure in 1697 of the ‘Malt Lottery’, the second lottery loan, presents a fruitful case study. From a practical point of view, it tells us three things. First, the technical features of the English state lottery loans were established for more than a century after only three experiments. Second, its two components (‘lottery’ and ‘loan’) led to an abnormally poor return for investors since its expected return was 3.91 per cent whereas its effective return was 5.84 per cent – two figures in contradiction with the 6.3 per cent advanced by Dickson (1967). Third, a most strange solution was devised to counteract the failure: delivering the unsold tickets to the Exchequer to be used as cash. From a more theoretical point of view, the condition North and Weingast (1989) advanced for a successful financial issue proves necessary but not sufficient. The Malt Lottery failed (1,763 tickets sold out of 140,000) because it did not meet the three requirements for success: its return was too low and was lower than the return on competitive assets; its reimbursement dates were uncertain; and the economic and political environment was gloomy.


2021 ◽  
pp. 25-35
Author(s):  
Stefano Crabu ◽  
Ilaria Mariani ◽  
Felicitas Schmittinger

AbstractThe chapter describes the case studies methodology on the ground of the volume: their use and comparison are investigated from a theoretical point of view. This chapter has a twofold aim: (i) contextualise case studies and the experimentation/prototyping conducted by the pilots, then (ii) to provide a compass for going through the next chapters in which it is detailed the experience of each pilot as a case study. This reasoning is a premise for understanding and situating the relevant points emerged in the larger picture of the RRI framework.


Author(s):  
Jinat Hosain

This study tries to explore the interrelated dynamics among cosmetic surgery, choice and empowerment. While poverty, poor health accessibility and gender inequality are common problems in Bangladesh, a growing number of cosmetic clinics are being established and a number of women are increasingly taking up cosmetic surgeries. This study seeks to explore why women choose cosmetic surgeries for beautification, how they experience it and whether cosmetic surgery leads women to be empowered or not. Using qualitative research methods, this study used in-depth semi structured interview, observation and case study method to collect the data from the different cosmetic surgery patients, coming from both urban and rural areas of Bangladesh. The data was further analyzed by coding informants' responses into themes based on the research objectives and the theory, named ‘empowerment'. The study shows that even if the women choose surgery, it does not necessarily enhance their empowerment. That is the surgery that brings changes in physical appearance and might make them attractive, but it contributes little socially in terms of enabling them to make own decision in the contest of family and in community. Rather these women act as prescribed by patriarchal norms and gendered rules. Analyzing the data from theoretical point of view, this study found that the women, irrespective of regional boundaries, can rarely fulfill the condition of empowerment in relation to choice and IAP. The study concludes with some questions and queries that need more research to be answered.


Author(s):  
Snehasish Banerjee ◽  
Tan Yu Sing ◽  
Anisur Reza Chowdhury ◽  
Haris Anwar

To shed light on how green computing can assist organizations in achieving improved competitive advantage and business sustainability, this chapter has two objectives. First, it aims to develop a theoretically informed taxonomy of enablers that have the potential to incentivize organizations to go green. Second, with the taxonomy as the lens of analysis, it seeks to study the adoption of green computing by two well-known technology giants, namely, Hewlett-Packard and Microsoft Corporation. The taxonomy, which was informed by the theoretical perspectives of short-termism and impression management, identifies three enablers. These include the financial enabler, the technical enabler, and the marketing enabler. Moreover, a case study method was adopted to trace the greenification journey of Hewlett-Packard and Microsoft Corporation. Contributions and implications of the study are discussed both from a theoretical point of view as well as a practical point of view.


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