scholarly journals ENGINEERING AND GEODESIC WORKS AND EXECUTIVE SURVEY INSTALLATION OF BRIDGE STRUCTURES

2021 ◽  
Vol 1 (161) ◽  
pp. 124-128
Author(s):  
L. Kovalenko ◽  
V. Yemets
Keyword(s):  
High Accuracy ◽  
Industrial Construction ◽  
Total Station ◽  
Construction Methods ◽  
Bridge Structures ◽  
Bridge Crossing ◽  
Bridge Building ◽  
Bridge Spans ◽  
Structural Blocks

Modern construction of bridge crossings is impossible without engineering and geodetic works. When transferring a project to the terrain, it is necessary to perform measurements in the horizontal and vertical planes with high accuracy. Geodetic works, to secure the design position and dimensions of both the entire sporida and its surrounding parts, to be carried out by procrastination before the construction of the bridge. Geodetic work during the construction of bridges and other structures is a complex of measurements, calculations and constructions on the ground, in which the design placement of structures must be ensured. The purpose of the article is to consider engineering and geodetic works during the construction of a bridge as part of a combined bridge crossing. At the stages of the construction of the bridge, the accuracy of the project is required, which will ensure geodesic work. These include: the breakdown of bridge supports at different stages of their construction, control of the erection of the superstructure and its installation on the support parts. To perform geodetic works such equipment as an electronic total station "Sokkia 630" and a digital level of the brand "Trimble DiNi" were used. The coordinates of the benchmarks were obtained and entered into the plan of the area. To work with them, anchors were driven into the asphalt and soil, photographed and entered into the documentation. On the pillars of the bridge were glued marks for the notch of the device, with a reflective effect. The data of coordinates and heights were entered into the memory of the total station. The method and procedure for geodetic works during the installation of bridge spans depend on their design and materials. At present, the most common methods of superstructures erection include hinged and semi-hinged assembly, assembly on the slipway, assembly on the shore with subsequent thrusting. When installing superstructures, the main tasks of geodetic support are to determine the straightness of the main beams and measure the so-called building lift. In the practice of bridge building, the degree of use of industrial construction methods is growing, that is, the manufacture of individual structural blocks with their subsequent connection at a regular place, which contributes to an increase in labor productivity and the quality of bridges.

TINGKAT KEAKURATAN DAN KEBERTERIMAAN TERJEMAHAN KALIMAT YANG MENGAKOMODASI TINDAK TUTUR KOMISIF PADA NOVEL INSURGENT (THE ACCURACY AND ACCEPTABILITY OF TRANSLATION ON THE SENTENCES WHICH ACCOMODATE COMMISSIVE SPEECH ACT IN THE INSURGENT NOVEL)

Widyaparwa ◽  
2017 ◽  
Vol 45 (2) ◽  
pp. 151-164
Author(s):  
Novita Sumarlin Putri
Keyword(s):  
Focus Group ◽  
Focus Group Discussion ◽  
Speech Act ◽  
Group Discussion ◽  
Document Analysis ◽  
High Accuracy ◽  
Pragmatic Approach ◽  
Componential Analysis ◽  
Pragmatic Aspects

Tindak tutur komisif merupakan salah satu aspek pragmatik yang harus diperhatikan oleh penerjemah ketika menerjemahkan teks. Hal itu dilakukan agar menghasilkan terjemahan yang berkualitas dari aspek keakuratan dan keberterimaan. Berdasarkan alasan tersebut, penelitian ini bertujuan mendiskripsikan tingkat keakuratan dan keberterimaan terjemahan kalimat yang mengakomodasi tindak tutur komisif dengan pendekatan pragmatik. Data yang digunakan ialah tuturan komisif dan hasil penilaian kualitas terjemahan. Data bersumber dari novel Insurgent karya Veronica Roth dan informan. Data dikumpulkan dengan cara analisis dokumen, kuesioner dan Focus Group Discussion. Selanjutnya, data dianalisis dengan cara analisis domain, taksonomi, komponensial, dan tema budaya. Hasil penelitian ini menunjukkan bahwa terjemahan dalam novel Insurgent mempunyai nilai keakuratan dan keberterimaan yang cukup tinggi. Berdasarkan penelitian ini, dapat disimpulkan bahwa tingkat keakuratan dan keberterimaan pada setiap jenis tindak tutur komisif memiliki dampak terhadap kualitas keseluruhan terjemahan kalimat yang mengandung tindak tutur komisif.Commissive speech act is one of the pragmatic aspects to regard by the translator in translating the text. It aims to produce a qualified translation in regarding accuracy and acceptability aspects. According to the aspects, this research aims to describe accuracy and acceptability of translation in sentences which accommodate commissive speech act using pragmatic approach. The data used is commissive speech and qualitative translation value result. The sources of the data are an Insurgent novel by Veronica Roth and informants. The data were collected through document analysis, questionnaire, and Focus Group Discussion then analyzed the domain, taxonomic, componential analysis, and cultural theme. The result shows that translation in the Insurgent novel has high accuracy and acceptability values. This research concludes that the accuracy and acceptability level in each commissive speech act has an impact on quality of whole translated sentences which contain commissive speech act.

scholarly journals Cryo-EM model validation recommendations based on outcomes of the 2019 EMDataResource challenge

2021 ◽  
Vol 18 (2) ◽  
pp. 156-164 ◽  
Author(s):  
Catherine L. Lawson ◽  
Andriy Kryshtafovych ◽  
Paul D. Adams ◽  
Pavel V. Afonine ◽  
Matthew L. Baker ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Structure Data ◽  
Model Evaluation ◽  
Data Bank ◽  
High Accuracy ◽  
Atomic Resolution ◽  
Software Developers ◽  
Data Archives ◽  
Modeling Software

AbstractThis paper describes outcomes of the 2019 Cryo-EM Model Challenge. The goals were to (1) assess the quality of models that can be produced from cryogenic electron microscopy (cryo-EM) maps using current modeling software, (2) evaluate reproducibility of modeling results from different software developers and users and (3) compare performance of current metrics used for model evaluation, particularly Fit-to-Map metrics, with focus on near-atomic resolution. Our findings demonstrate the relatively high accuracy and reproducibility of cryo-EM models derived by 13 participating teams from four benchmark maps, including three forming a resolution series (1.8 to 3.1 Å). The results permit specific recommendations to be made about validating near-atomic cryo-EM structures both in the context of individual experiments and structure data archives such as the Protein Data Bank. We recommend the adoption of multiple scoring parameters to provide full and objective annotation and assessment of the model, reflective of the observed cryo-EM map density.

scholarly journals A Simulation Model of Construction Projects Executed in Random Conditions with the Overlapping Construction Works

2021 ◽  
Vol 13 (11) ◽  
pp. 5795
Author(s):  
Sławomir Biruk ◽  
Łukasz Rzepecki
Keyword(s):  
Simulation Model ◽  
Technological Process ◽  
Construction Projects ◽  
Working Time ◽  
Simulation Studies ◽  
Construction Methods ◽  
The Impact ◽  
Construction Works

Reducing the duration of construction works requires additional organizational measures, such as selecting construction methods that assure a shorter realization time, engaging additional resources, working overtime, or allowing construction works to be performed simultaneously in the same working units. The simultaneous work of crews may affect the quality of works and the efficiency of construction processes. This article presents a simulation model aimed at assessing the impact of the overlap period on the extension of the working time of the crews and the reduction of a repetitive project’s duration in random conditions. The purpose of simulation studies is to provide construction managers with guidelines when deciding on the dates of starting the sequential technological process lines realized by specialized working crews, for sustainable scheduling and organization of construction projects.

scholarly journals Regulation of dynamic characteristics of bridge spans in the conditions of the changing impact of the temporary moving load

2021 ◽  
Vol 1 ◽  
pp. 4-19
Author(s):  
Vladimir Mikhailovich Kartopoltsev ◽  
◽  
Andrey Vladimirovich Kartopoltsev ◽  
Keyword(s):  
Dynamic Characteristics ◽  
Moving Load ◽  
Musical Instrument ◽  
Oscillatory Process ◽  
Natural Oscillations ◽  
Structural Content ◽  
Bridge Structures ◽  
National Programs ◽  
And Control ◽  
Bridge Spans

It is known that an unregulated structure is likened to an unadjusted musical instrument [7]. The adjusted dynamic stress-strain state of the bridge spans will be adequate to the parameters of the design and operational state as a result of the introduction of regulation and control of fl uctuations in the conditions of the changing impact of the temporary mobile load. Methods for regulating dynamic characteristics by changing the frequency of natural oscillations of the system, taking into account energy dissipation, as well as introducing into the oscillatory process a transformed form of intense oscillations in the process of artifi cial or selective resonance, in which the oscillations of the system either damp or cease to be dangerous, are especially carefully considered. Attention is focused on the infl uence of the defectiveness of the roadway with an increase in the mass and speed of a temporary moving load. For this purpose, a classifi er of bridge deck defects has been developed to clarify the boundaries of the eff ect of a defect on the dynamic operation of a structure [1, 3]. Analysis of the structural content and criteria for determining shows the insuffi ciency of the components assessing the eff ect of the temporary mobile load on the span under non-stationary oscillations, and also reveals contradictions in the assessment of the dynamic additive . The practical use of the research results is advisable by the Ministry of Transport Construction in the implementation of state national programs and projects for improving structures, calculation methods, design and operation of bridge structures

scholarly journals 3D ultrasound–guided resection of low-grade gliomas: principles and clinical examples

2019 ◽  
Vol 47 (6) ◽  
pp. E9 ◽  
Author(s):  
Geirmund Unsgård ◽  
Frank Lindseth
Keyword(s):  
3D Ultrasound ◽  
High Accuracy ◽  
Low Grade ◽  
Ultrasound Guided ◽  
High Quality ◽  
Case Examples ◽  
Low Grade Gliomas ◽  
Mesial Temporal Lobe ◽  
Temporal Lobe Lesions

3D ultrasound (US) is a convenient tool for guiding the resection of low-grade gliomas, seemingly without deterioration in patients’ quality of life. This article offers an update of the intraoperative workflow and the general principles behind the 3D US acquisition of high-quality images.The authors also provide case examples illustrating the technique in two small mesial temporal lobe lesions and in one insular glioma. Due to the ease of acquiring new images for navigation, the operations can be guided by updated image volumes throughout the entire course of surgery. The high accuracy offered by 3D US systems, based on nearly real-time images, allows for precise and safe resections. This is especially useful when an operation is performed through very narrow transcortical corridors.

scholarly journals Discussion on construction methods and precautions of building water supply and drainage

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Guoliang Yu ◽  
Fan Fan Yang ◽  
Li Li Li ◽  
Zhenfeng Zhenfeng Li ◽  
Zhenlong Shi
Keyword(s):  
Water Supply ◽  
Construction Project ◽  
Construction Method ◽  
Construction Quality ◽  
Strong Function ◽  
Construction Enterprises ◽  
Construction Methods ◽  
Quality Of Water

As an important construction link in the construction project, the quality of the water supply and drainage directly affects the overall quality of the construction project. Because of the strong function of the water supply and drainage project, the construction quality is easily affected by the construction method. For this reason, construction enterprises should attach importance to the mastery of water supply and drainage construction methods. And further understand the relevant precautions of construction water supply and drainage construction, in order to achieve the purpose of improving the quality of water supply and drainage construction. 

scholarly journals Accurate vision-based displacement and vibration analysis of bridge structures by means of an image-assisted total station

2018 ◽  
Vol 10 (6) ◽  
pp. 168781401878005 ◽  
Author(s):  
Mohammad Omidalizarandi ◽  
Boris Kargoll ◽  
Jens-André Paffenholz ◽  
Ingo Neumann
Keyword(s):  
Vibration Analysis ◽  
Expectation Maximization Algorithm ◽  
Cost Effective ◽  
Element Model ◽  
Distance Measurements ◽  
Target Pattern ◽  
Total Station ◽  
Measurement Systems ◽  
Bridge Structures ◽  
Short And Long Term

Today, short- and long-term structural health monitoring of bridge infrastructures and their safe, reliable and cost-effective maintenance have received considerable attention. For this purpose, image-assisted total station (here, Leica Nova MS50 MultiStation) as a modern geodetic measurement system can be utilized for accurate displacement and vibration analysis. The Leica MS50 measurements comprise horizontal angles, vertical angles and distance measurements in addition to the captured images or video streams with practical sampling frequency of 10 Hz using an embedded on-axis telescope camera. Experiments were performed for two case studies under (1) a controlled laboratory environment and (2) a real-world situation observing a footbridge structure using a telescope camera of the Leica MS50. Furthermore, two highly accurate reference measurement systems, namely, a laser tracker Leica AT960-LR and a portable shaker vibration calibrator 9210D in addition to the known natural frequencies of the footbridge structure calculated from the finite element model analysis are used for validation. The feasibility of an optimal passive target pattern and its accurate as well as reliable detection at different epochs of time were investigated as a preliminary step. Subsequently, the vertical angular conversion factor of the telescope camera of the Leica MS50 was calibrated, which allows for an accurate conversion of the derived displacements from the pixel unit to the metric unit. A linear regression model in terms of a sum of sinusoids and an autoregressive model of the coloured measurement noise were employed and solved by means of a generalized expectation maximization algorithm to estimate amplitudes and frequencies with high accuracy. The results show the feasibility of the Leica MS50 for the accurate displacement and vibration analysis of the bridge structure for frequencies less than 5 Hz.

scholarly journals Medical Diagnostic Tests: A Review of Test Anatomy, Phases, and Statistical Treatment of Data

2019 ◽  
Vol 2019 ◽  
pp. 1-22 ◽  
Author(s):  
Sorana D. Bolboacă
Keyword(s):  
Clinical Practice ◽  
Diagnostic Test ◽  
Diagnostic Tests ◽  
Statistical Treatment ◽  
High Accuracy ◽  
Phase Iii ◽  
Medical Diagnostic ◽  
Statistical Approaches ◽  
Phase I And Ii

Diagnostic tests are approaches used in clinical practice to identify with high accuracy the disease of a particular patient and thus to provide early and proper treatment. Reporting high-quality results of diagnostic tests, for both basic and advanced methods, is solely the responsibility of the authors. Despite the existence of recommendation and standards regarding the content or format of statistical aspects, the quality of what and how the statistic is reported when a diagnostic test is assessed varied from excellent to very poor. This article briefly reviews the steps in the evaluation of a diagnostic test from the anatomy, to the role in clinical practice, and to the statistical methods used to show their performances. The statistical approaches are linked with the phase, clinical question, and objective and are accompanied by examples. More details are provided for phase I and II studies while the statistical treatment of phase III and IV is just briefly presented. Several free online resources useful in the calculation of some statistics are also given.

scholarly journals Parameters Influencing the Outcome of Additive Manufacturing of Tiny Medical Devices Based on PEEK

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 466 ◽  
Author(s):  
Yiqiao Wang ◽  
Wolf-Dieter Müller ◽  
Adam Rumjahn ◽  
Andreas Schwitalla
Keyword(s):  
Medical Devices ◽  
Fused Deposition Modeling ◽  
High Accuracy ◽  
Design Parameters ◽  
Fused Deposition ◽  
Polyether Ether Ketone ◽  
Deposition Modeling ◽  
3D Printed ◽  
Ether Ketone

In this review, we discuss the parameters of fused deposition modeling (FDM) technology used in finished parts made from polyether ether ketone (PEEK) and also the possibility of printing small PEEK parts. The published articles reporting on 3D printed PEEK implants were obtained using PubMed and search engines such as Google Scholar including references cited therein. The results indicate that although many have been experiments conducted on PEEK 3D printing, the consensus on a suitable printing parameter combination has not been reached and optimized parameters for printing worth pursuing. The printing of reproducible tiny-sized PEEK parts with high accuracy has proved to be possible in our experiments. Understanding the relationships among material properties, design parameters, and the ultimate performance of finished objects will be the basis for further improvement of the quality of 3D printed medical devices based on PEEK and to expand the polymers applications.

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