scholarly journals Identification of duration construction of combined foundation

2018 ◽  
Vol 5 (4) ◽  
Author(s):  
Iakov Pronozin ◽  
Denis Volosiuk

The method for determining the duration of a combined foundation device, which is constructed in several stages, is considered in the article. The main stages include the construction of structures and the regulation of the stress-strain state of the soil base, which is carried out by pressing it. Pressurization is carried out during the construction of the building. On an example of construction of the linear schedule the mutual coordination of works of each stage during building of a building is resulted. The possibility of varying the time parameters of the network model is presented depending on the parameters of the crimping process. Between the late and early beginnings of work there is a common time reserve, which is part of the technological break. The authors present empirical data on the actual duration of concreting of grillage of combined foundations. The study of time parameters of technological processes was based on such methods of observation as timekeeping, photo-timing and video and photo-fixation. The measurements were carried out during the construction of the residential complex «Neighbors» in Tyumen. The scope of research included the study of labor costs of the team, consisting of seven concrete workers. The investigated technological process of concreting consistently included the reception and direction of the concrete mix, laying, leveling and compacting the mixture, smoothing and smoothing the grillage surface. Based on the data obtained, the dependencies of the average duration of concrete work on the volume of the concrete mix laid in the cells (shells) are revealed. The comparison of work durations on both foundations is made. Actual work is determined and work time standards are established, allowing to organize concrete works with sufficient precision when drawing up calendar plans within the framework of working out of projects for the production of works. This article is made in the framework of the dissertation research by co-author Volosiuk D.V.

2018 ◽  
Vol 56 (10) ◽  
Author(s):  
David W. Kimberlin

ABSTRACTIn their article in this issue of theJournal of Clinical Microbiology, S. R. Dominguez et al. (J Clin Microbiol 56:e00632-18, 2018,https://doi.org/10.1128/JCM.00632-18) describe the performance of PCR detection of herpes simplex virus (HSV) DNA versus viral culture in skin and mucosal samples from 7 neonates with HSV disease. This is a significant contribution to our understanding of the optimal diagnostic approach in babies being evaluated for neonatal HSV disease. Many diagnostic laboratories already have made the change to molecular diagnostics for skin and mucosal swab testing, however, in large part due to the labor costs associated with viral cultures. Thus, important studies such as this one are being conducted to support a decision that has already been made in many locations on mostly economic grounds. This small case series supports the decision to use molecular testing for samples from skin and mucosal sites, but larger studies are needed to more fully define the performance characteristics of PCR in this population. Since a false-positive result would commit a baby to months of management that would be unnecessary and have potential harm, it is critical to base diagnostic decision making on data that support the use of a specific test.


Author(s):  
Isaac Balaila ◽  
Issachar Gilad

While the work measurement concept has evolved from the manufacturing world, it has not been fully adopted yet to the global shift into the service sector. Certain factors create inherent difficulties in determining time standards for manpower allocation in service jobs: (a) wide variation in Time Between Arrivals and Service Performance Time and (b) the difficulty of assessing the damage done to the organization by long customer Waiting Times (WT) for service. This difficulty makes it hard to calculate the Break-Even Point (BEP) between raising worker output, which minimizes labor costs but increases customer WT, and improving service quality by lowering customer WT. The model proposed overcomes most of the difficulties by taking a multi-domain approach to the problem: 1) The model deploys a series of indicators for a correlation between output and WT. The indicator values are affected by service level of urgency and the initial number of service workers and 2) Cost-Benefit – finding the best BEP by comparing the operational cost of an additional worker with the economical benefit caused by the decrease in WT at the margin. Thus, the model finds the best balance between worker output and service quality.


2015 ◽  
Vol 60 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Piotr Strzałkowski

Abstract In area affected by old, shallow extraction in some cases sinkholes are formed, causing security issues in urbanized areas. Problem of working out deterministic forecast of this threat seems to be important and up-to-date. Mathematical model presented in this work let us predict the possibility of sinkhole formation. That prediction is essential for analyzing possibility of investments in such areas. Basing on presented work, it is also possible to determine dimensions of sinkhole. Considerations are based on known from literature Sałustowicz’s theory, which is utilises Huber’s solution of equation describing the stress state around elliptic void made in flat plate


Author(s):  
P. Ye. Hryhorovskyi ◽  
V. A. Basanskyi ◽  
Yu. V. Kroshka ◽  
I. V. Osadcha

To predict the dynamics of landslide processes, it is necessary to have information about the change of factors of man-made and natural influences over time. An important source of such information is instrumental and geodetic monitoring. To choose an effective method and systems of instrumental monitoring, it is necessary to compare the main organizational and technological indicators (duration and labor costs) of variants of such systems. The calculation of the duration and labor costs for measuring work when observing the deformations of landslides can be determined on the basis of existing norms of uniform time norms and prices for survey work or using the trace element method of normalization of labor processes.The article presents a brief analysis of the relationship between the norm of duration of measuring works, on the example of geometric leveling of class II to determine the deposition of deformation control points (marks), determined by the current uniform norms of time and rates for survey work and the duration of the same labor process. microelement method of rationing. The list and structure of works on performance of leveling of the II class, as set of elementary labor actions (operations) so isolated and outlined that the further division is inexpedient is defined. The microelements of the labor process are singled out and their normative duration in hours is determined, obtained on the basis of the experience of operation of measuring instruments during the performance of works on determination of deposition of deformation marks.The coefficient of interrelation between the existing current norms and the actual duration of the labor process, determined by the microelement rationing method for works on geometric leveling of the II class, which allows to distinguish the actual duration of the labor process as a norm, without taking into account the duration of preparatory on holiday. The inconsistency of the current standards of measurement work with modern methods of work, equipment, features of instrumental monitoring, monitoring in compacted buildings and other types of work creates the need to determine the elements of the relationship between existing standards and the actual duration of work in modern construction.


2019 ◽  
Vol 17 (1) ◽  
pp. 97-114
Author(s):  
Réka Sárközy

Abstract The essay analyses the representation of polyphonic memory in two groundbreaking Hungarian documentary films, made thirty years apart: János and Gyula Gulyás’s I was at the Isonzo, too (Én is jártam Isonzónál, 1984–87) and Bálint Révész’s Granny Project (Nagyi projekt, 2017). The earlier film was made in the 1980s, under the state-socialist system, when doing memory work of both World Wars was limited, if not forbidden. The second film was made recently, in 2017. They differ from each other in many ways, but instinctively they chose the same solution for representing and working out traumas: through transnational dialogue. They focus on traumatic experiences of the past, changing national, so-called monologic memory into a broad perspective, putting Aleida Assmann’s (2005) theory of dialogic memory into practice.1


2021 ◽  
Vol 2061 (1) ◽  
pp. 012081
Author(s):  
S A Osmukha

Abstract The article describes the study of methods of hydrodynamic coefficients using finite volumes, as well as numerical methods based on the study of data from the air tube experiment.The methods of converting the data of air tube experiments when working out the elements of the fixed assets of the fleet in the bases of orthogonal functions (bursts) were investigated and described. The study is based on the obtained mathematical models of processes using the methods of multi-turn engineering design, methods for constructing computer models in a structure that provides for an open process of developing and approving proposed project elements.An urgent task is to develop methods for reducing costs associated with the design and creation of marine infrastructure facilities and fixed working capital. The relevance of the tasks follows from the expensive cycles of project development, the labor costs of highly qualified specialists.


1968 ◽  
Vol 8 (3) ◽  
pp. 365-374
Author(s):  
A. K. M. Ghulam Rabbani

Dr. Huda has earned our gratitude by elaborating in lucid terms the problems and experiences of planning in Pakistan [1]. As we approach the Fourth Plan we need to have a fresh look at past experiences so as to formulate the future plans in a much more realistic fashion than has hitherto been done. Dr. Huda, in his Address, has raised many issues in this respect. My comments will be limited to the planning technique that has so far been pursued in Pakistan. My concern is basically regarding the changes, that we would like to see, made in the coming plan in this respect. At the technical level, the formulation of a five-year plan has now be¬come synonymous with working out a multisectoral econometric (consistency) model, which provides the basic framework around which the plan is built. However, setting up a macro-model is only a part of the plan formulation. A comprehensive model which purports simply to develop and test the con¬sistency and optimality of an economic strategy is, at best, partially relevent to planning needs [5]. In fact, complete formulation of a five-year plan involves the following six categories of interrelated studies — the strength and realism of a plan depends on how satisfactorily these works are accomplished while a plan is formulated:


2018 ◽  
Vol 4 (1) ◽  
pp. 35-41
Author(s):  
Brigitta M. Lutz ◽  
Benedikt J. Braun ◽  
Beate Blank ◽  
Manuel Mutschler

AbstractWork-time constraints during surgical residency along with managing a private life usually take up the majority of the time of young surgeons. For many, work with a surgical society seems like something neither generally promising nor personally worthwhile, thus raising the question, why bother? This article sets out to show examples of the effects that surgical societies and young surgeon committees can have on surgery and residency training. Additionally, we highlight the personal side of being active on a committee. Our aim is to raise interest in participating in societal work by showing the rewarding general effects as well as personal benefits. While this article is based primarily on experiences made in Germany, we believe that aspects can be transferred to other medical systems.


1962 ◽  
Vol 156 (963) ◽  
pp. 210-219 ◽  

Further evidence is offered in support of a transverse growth theory of the strophisms, or torsions made in response to stimulation, in growing dorsiventral organs, and also of the experimental auxin torsions of radial stems. The theory is a modification of a theory pro­posed by Rawitscher (1932). Seedlings of Phaseolus multiflorus were arranged with leaves horizontal and on edge, so that their petioles were stimulated transversely by gravity, but the petioles were prevented from twisting by being held in constraint for various periods up to 48 h. Then they were cut across at the distal end, and split in a longitudinal vertical plane right through to the cut end. The halves always twisted rapidly in opposite directions, so as to separate their lower edges. When the halves were bound closely together again, the whole reconstituted zone was found to be twisted in the direction determined by the stimulation in constraint. Also petioles were arranged similarly horizontal and on edge, but not in con­straint, and when they had begun to twist, they were split in the previously vertical plane, but the distal ends were left intact to keep the halves together. The halves regularly gaped apart at once along their lower, but not their upper edges. An experiment similar to the last was performed on young stems also, that were laid horizontal and auxinated on one side so that they twisted in the direction to raise that side. The result was similar, but not conclusive, for a reason stated. Taken together the results support the theory, according to which in an organ stimulated as for a geostrophism or for a geo-auxin torsion, the lateral halves begin to curve upwards in the transverse direction. In doing so they develop opposite twisting forces, and the dorsal half, or the auxinated half, prevails and so makes the whole organ twist. The problem of working out the theory more exactly is discussed, and various other points also.


2007 ◽  
Vol 364-366 ◽  
pp. 259-264
Author(s):  
Pedro Arias ◽  
Henrique Lorenzo ◽  
Celestino Ordóñez ◽  
Julia Armesto

Nowadays some measurement tasks are usually made by the joint use of different systems, techniques, even sciences, trying to find the best results together with less work time. This is the case of close range photogrammetry and laser distancemeter. It is possible to find some works where they are applied together in so different sceneries as architectonic conservation, civil engineering, building, etc. One of the scopes where these techniques can be applied is in the measurement of facades of buildings in construction [1,2]. During the constructive process it is necessary to make periodic measurements, and also during the whole life of the building, as a control tool [3]. At the present day some of these measurements are hand-made, with the risk of having an industrial accidents in some situations. In this work we present a methodology based on a photogrammetric - distancemeter joining measure system, in order to semi-automate some measurement procedures in building construction. The system consists of a semi-rigid calibrated support putting up a laser distancemeter and a digital camera, called CaM-DisT®. The support was specifically designed for this kind of application. The development of the system was made in four steps: establishment of the mathematical background; design of the support; construction of the support; and calibration of the complete system. The calibration process was made by two different alternatives which are xpounded this contribution in detail.


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