scholarly journals Comparative analysis of the requirements of the rules of the russian river register and the russian maritime register of shipping to the design and strength of ships on underwater wings

2021 ◽  
pp. 28-39
Author(s):  
Stanislav N. Girin Girin
Keyword(s):  
Comparative Analysis ◽  
Numerical Methods ◽  
Regulatory Framework ◽  
Numerical Calculations ◽  
Bending Moments ◽  
Weak Wave ◽  
Significant Difference ◽  
Russian River ◽  
Wave Modes

. The comparative analysis of the regulatory framework of the rules of the Russian river register (PRR) and the Russian maritime register of shipping (PMR) on the design and strength of ships on underwater wings (SEC) showed a significant difference between the methodologies of these rules. In this regard, a comparative analysis of the rules is possible only by performing numerical calculations for specific vessels. This paper presents the results of calculations for three SEC models. It is shown that with some extrapolation of the dependences given in the PRR, the values ​​of the calculated values ​​of bending moments for SEC, intended for operation on the excitement of h3%> 2.0 m, can be obtained from the PMR. For more weak wave modes Settlements. The existing approach to the pro-willer of the strength of the SEC wing devices should be recognized obsolete. It is necessary to either upgrade the PRR, taking into account modern advances in the field of hydrodynami, or allow the use of modern software complexes for computers based on numerical methods for solving hydrodynamic problems.

scholarly journals Comparative Analysis of Different Local Anesthetic Solutions Available in Market: An In Vitro and Clinical Study

2021 ◽  
Author(s):  
Eisha Imran ◽  
Faisal Moeen ◽  
Beenish Abbas ◽  
Bakhtawar Yaqoob ◽  
Mehreen Wajahat ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Local Anesthetic ◽  
Compositional Analysis ◽  
Bacterial Activity ◽  
Similar Composition ◽  
Ph Values ◽  
Significant Difference ◽  
The Mean ◽  
The Difference

Abstract Objectives The study aimed to evaluate and compare various commercially available local anesthetic solutions. Materials and Methods A total of 150 commercially available local anesthetic cartridges of similar composition (2% lidocaine with epinephrine 1:100,000) were randomly collected and divided into 3 groups. The designations of groups were selected from their product names such that each group consisted of 60 cartridges. Group S (Septodont, France) Group M (Medicaine, Korea) and Group H (HD-Caine, Pakistan). The samples were divided into five sub-groups, each consisting of 10 cartridges from each group to investigate each parameter. Results The acquired data was statistically analyzed and compared (using SPSS version 12). Compositional analysis revealed a non-significant (P>0.05) difference when the three Groups were compared with standard lidocaine and epinephrine solutions. The mean pH values of samples from group S, M and H respectively fell within the range of pH values of commercially available solutions. Non-significant difference in EPT values of Group S and H was found when efficacy was compared (p = 0.3), however a significant difference (p < 0.01) was observed in contrast to Group M. Anti-bacterial activity was observed in all the group and a non-significant difference in cell viability values of Group S and M was found (p = 0.6), while the difference was significant in comparison to Group H. Conclusion Within the limitations of these investigations, it appears that the properties of different manufacturers fall within the recommended ranges as mentioned in literature and do not appear to be statistically different in the variables we have tested.

Comparative Analysis of the Exposure and Surgical Freedom of the Endoscopic Extended Minipterional Craniotomy and the Transorbital Endoscopic Approach to the Anterior and Middle Cranial Fossae

2018 ◽  
Vol 17 (2) ◽  
pp. 174-181 ◽  
Author(s):  
Raywat Noiphithak ◽  
Juan C Yanez-Siller ◽  
Juan M Revuelta Barbero ◽  
Raymond I Cho ◽  
Bradley A Otto ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Standard Deviation ◽  
Minimally Invasive ◽  
Vertical Axis ◽  
Endoscopic Approach ◽  
Extended Version ◽  
Specific Approach ◽  
Significant Difference ◽  
Surgical Application ◽  
The Mean

AbstractBACKGROUNDNumerous minimally invasive approaches to the skull base have been successively developed. Knowledge of the surgical nuances of a specific approach may facilitate approach selection. This study sought to compare the nuances of an extended version of the minipterional craniotomy (EMPT) with those of the transorbital endoscopic approach (TOEA) to the anterior and middle cranial fossae (ACF and MCF, respectively).OBJECTIVETo quantitatively analyze and compare the area of exposure and surgical freedom between EMPT and TOEA to the ACF and MCF.METHODSEMPT and TOEA were carried out in 5 latex-injected cadaveric heads, bilaterally (10 sides). For each approach, the area of exposure, surgical freedom, and angle of attack were obtained with neuronavigation and statistically compared.RESULTSNo significant difference was found between the mean area of exposure of EMPT and TOEA at the ACF and MCF (P = .709 and .317, respectively). The mean exposure area at the ACF was of 13.4 ± 2.6 cm2 (mean ± standard deviation) and 13.0 ± 1.9 cm2 for EMPT and TOEA, respectively. Except for the crista galli, EMPT afforded a larger area of surgical freedom at all targets. EMPT also achieved significantly greater attack angles in vertical axis except to the crista galli. The horizontal attack angles to all targets were similar between approaches.CONCLUSIONEMPT and TOEA offer a comparable area of exposure at the ACF and MCF in the cadaver; however, the instrument maneuverability afforded by EMPT is superior. Further studies are necessary to better define their precise surgical application.

scholarly journals On The Parameters of Geometric Constraints for Cracked Plates under Tension – Three-Dimensional Problems

2017 ◽  
Vol 22 (4) ◽  
pp. 901-919 ◽  
Author(s):  
M. Graba
Keyword(s):  
Fracture Toughness ◽  
Comparative Analysis ◽  
Crack Front ◽  
External Load ◽  
Three Dimensional ◽  
Geometric Constraints ◽  
Numerical Calculations ◽  
Cracked Plates ◽  
The Relationship ◽  
Actual Fracture

Abstract This paper provides a comparative analysis of selected parameters of the geometric constraints for cracked plates subjected to tension. The results of three-dimensional numerical calculations were used to assess the distribution of these parameters around the crack front and their changes along the crack front. The study also involved considering the influence of the external load on the averaged values of the parameters of the geometric constraints as well as the relationship between the material constants and the level of the geometric constraints contributing to the actual fracture toughness for certain geometries.

scholarly journals COMPARATIVE ANALYSIS OF THE PARAMETERS OF FINITE-ELEMENT MODELS OF SOILS OBTAINED BY NUMERICAL METHODS

2017 ◽  
pp. 23-31
Author(s):  
Vladimir Ivanovich Matselya ◽  
Igor Nikolaevich Seelev ◽  
Alexey Valentinovich Lekontsev ◽  
Robert Rafaelevich Khafizov ◽  
Pavel Viktorovich Yakovlev ◽  
...  
Keyword(s):  
Finite Element ◽  
Comparative Analysis ◽  
Numerical Methods ◽  
Small Deformation ◽  
Finite Element Models ◽  
Linear Elastic ◽  
Industrial Buildings ◽  
Test Models ◽  
Weak Points ◽  
Plaxis 3D

The popularity of numerical methods for modeling soil bases determines the increased demand for the accuracy of calculations. The choice of a model that meets the requirements of accuracy of calculations and minimization of costs is determined by comparative analysis of common soil models described in scientific literature and used in calculations of sediments and dynamic effects of buildings (finite element linear elastic, elastic, ideal-plastic, Mora - Coulomb with strengthening, elasto-plastic with strengthening at small deformation). The results have been obtained on test models using finite element method in the environment of PLAXIS 3D and SCAD Office programs. In order to compare results obtained, subject to requirements of the current regulatory documents, a comparative analysis of soils was carried out according to the model of Body of rules 22.13330.2011 "Foundations of buildings and structures". The analysis results were used for choosing an optimal model of soil bases of industrial buildings estimated in earthquake-proof design. It should be noted that the strong and weak points identified for each model justify the choice of the best model for each particular case.

scholarly journals Interregional analysis of the incidence as an instrument of improvement of the system of socio-hygienic monitoring

2021 ◽  
Vol 100 (6) ◽  
pp. 633-639
Author(s):  
Vladimir V. Kolomin ◽  
Natalya I. Latyshevskaya ◽  
Vladimir. S. Rybkin ◽  
Irina A. Kudryasheva
Keyword(s):  
Comparative Analysis ◽  
Pearson Correlation ◽  
Federal District ◽  
Specific Factor ◽  
Child Population ◽  
Software Packages ◽  
Significant Difference ◽  
Efficiency And Effectiveness ◽  
Scientific Substantiation ◽  
The Impact

Introduction. The purpose of the study was to scientifically substantiate the unification of methods for analyzing the morbidity of the population, and comparative analysis of the morbidity of the child population at the interregional level within the framework of social and hygienic monitoring. Objective. The scientific substantiation of the feasibility of an inter-regional comparative analysis of the incidence of the population in the constituent entities of the Russian Federatio to increase the efficiency and effectiveness of management decisions developed as part of social and hygienic monitoring. Material and methods. A comparative analysis of the incidence in the regions of the Southern Federal District, the occurrence and development of which is associated with air pollution, was carried out. Statistical data processing was performed by linear regression using the Statgraphics and Microsoft Excel software packages. The calculation of the Pearson correlation coefficient r to evaluate the severity of the existing trend in the variation of the variation series and the determination coefficient (R2), taking into account the reliability coefficient p <0.05. Assessed approaches to the analysis of the incidence of children in the framework of socio-hygienic monitoring in the subjects. Results. The study revealed the lack of a unified approach to the analysis of the morbidity of the population in the constituent entities of the Russian Federation within the framework of socio-hygienic monitoring, both according to the criteria for determining the priority pathologies for the region, and the duration of the analyzed period. The comparative analysis of the morbidity of the child population at the interregional level showed a significant difference in the dynamics and levels of morbidity from ecologically caused pathologies in adjacent regions, with similar social and climatic parameters. The formation of human health takes place under the conditions of the multicomponent influence of various factors. The etiology of most of the nosological forms, the degree of their dependence on the state of the external environment have been scientifically established. The most determined by the components of the environment, ecologically caused pathologies, the nature of the incidence of which is considered by the authors as a possible manifestation of the impact of a specific factor that has a priority value in the occurrence and development of these diseases. Conclusions. The study shows the expediency of unifying methods for analyzing the incidence of the population, as well as conducting a comparative analysis of the incidence of the child population at the interregional level within the framework of socio-hygienic monitoring.

scholarly journals KEPEDULIAN LINGKUNGAN SISWA DITINJAU DARI ASPEK PENGETAHUAN TENTANG KONSEP DASAR EKOLOGI DAN GENDER

2017 ◽  
Vol 18 (02) ◽  
pp. 64-77
Author(s):  
Suhardin Suhardin
Keyword(s):  
Data Analysis ◽  
Comparative Analysis ◽  
Basic Concept ◽  
Environmental Concern ◽  
Female Students ◽  
Male Students ◽  
Environmental Concerns ◽  
Male And Female ◽  
Significant Difference ◽  
Basic Concepts

  The objective of this research is to know the diffrences of environmental concern as well as to find out the relionship between basic concept of ecology knowledge with environmental concern among  male and female students. The Comparative Analysis was conducted in SMA Depok involving 96 students chosen by using purposive random sampling.The data analysis and interpretation indicated that: 1. There is significant correlation in students basic concepts of ecology knowledge between with the environmental concerns, 2. There is verry significant difference students among male and female environmental concerns  3. There is significant correlation in male students basic concepts of ecology knowledge between with the environmental concerns, 4. There is significant correlation in female students  basic concepts of ecology knowledge between with the environmental concerns.

scholarly journals Comparative characteristics of power capabilities of cadets of various sports sections (armsport, crossfit, kettlebell lifting, powerlifting)

2020 ◽  
pp. 115-118
Author(s):  
V. P. Yahodzinskyi ◽  
O. M. Kisilyuk ◽  
D. P. Polozenko ◽  
O. A. Desyatka ◽  
V. O. Novytskyi ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Effective Means ◽  
Armed Forces ◽  
Military Intelligence ◽  
Military Academy ◽  
Significant Difference ◽  
High Level ◽  
The Military ◽  
Better Than ◽  
Push Up

Power sports have always been very popular among servicemen. This is especially evident in recent times, when such power sports, as armsport, crossfit, kettlebell lifting, powerlifting have received some development. The article presents a comparative analysis of the power capabilities of cadets who specialize in various power sports. The study involved male cadets of the 4th year of various faculties (n=53) of the Military Academy (Odessa), who in the process of training were engaged in power sports: armsport (n=12), crossfit (n=16), kettlebell lifting (n=15), powerlifting (n = 10). In addition, the results of cadets-athletes were compared with the results of cadets of the faculty of training specialists of airborne assault troops and military intelligence and special purpose, who did not attend sports sections of the academy (n=60). Analysis of the power of the cadets was carried out on the following exercises: pull-up, lifting by coup, lifting by strength on the crossbar, 24 kg kettlebell snatch, push-up on the parallel bars, push-up. The conducted researches testified to the high level of development of power qualities of cadets of all sections of academy in power sports. There was no significant difference between the results of cadets of different power sports in most exercises. It is established that the power capabilities of cadets who are engaged in various power sports are significantly better than those of cadets who are not engaged in sports. This suggests that any of the studied power sports can be an effective means of developing and improving the power opportunities of future officers of the Armed Forces of Ukraine

MENTORING AS A FORM OF TEACHING ACTIVITY IN THE NEW DIGITAL EDUCATIONAL ENVIRONMENT

2021 ◽  
Vol 3 (102) ◽  
pp. 199-210
Author(s):  
ANNA V. POPOVA
Keyword(s):  
Comparative Analysis ◽  
Scientific Literature ◽  
Educational Environment ◽  
Educational Process ◽  
Training Process ◽  
Teaching Activity ◽  
Significant Difference

The article reveals the essential features of mentoring as a special type of pedagogical activity based on the concept of constructivism applying comparative analysis of individual legal acts in the field of education, as well as a thorough study of the Russian and foreign scientific literature. The author determines essential characteristics of this activity in the training process and the peculiarities of the mentor and mentee relationships. The article shows a significant difference between mentoring and coaching in the Russian educational process.

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