scholarly journals The comparative analysis of the seismic test results performed using the cross-hole and down-hole methods in terms of test reliability and efficiency

2018 ◽  
Vol 66 ◽  
pp. 01021
Author(s):  
Wojciech Tschuschke ◽  
Sławomir Gogolik ◽  
Maciej Kroll ◽  
Krzysztof Janicki
Keyword(s):  
Comparative Analysis ◽  
Small Strain ◽  
Test Reliability ◽  
Engineering Practice ◽  
Test Results ◽  
In Situ Tests ◽  
The Cross ◽  
Seismic Tests

Seismic tests are becoming more and more meaningful in modern geoengineering since they allow precise assessment of changes in the analyzed profile of soil deformation parameters at very small strain. The engineering practice generally uses two methods for such kinds of tests: reference cross-hole test and commercial down-hole method. The costs of implementation of this kind of research and the reliability of the results obtained along with any additional benefits from the type of the selected testing technique are not without significance. Seismic measurements for which comparative analysis was performed were carried out in a strongly anisotropic materials base of a tailings. The results of tests conducted with a standard cross-hole method were compared with those conducted using the down-hole method, in which the seismic piezocone (SCPTU) and seismic dilatometer (SDMT) were used. Test results have shown that in terms of assessment of their credibility, there were no fundamental differences in the quality of the recorded signals. It has been pointed out, however, that there are many advantages to penetration in situ tests, which complement identification of subsoil structure with many crucial elements that cannot be achieved using the cross-hole method.

Root reinforcement of soil: review of analytical models, test results, and applications to design

2013 ◽  
Vol 50 (3) ◽  
pp. 259-274 ◽  
Author(s):  
Tien H. Wu
Keyword(s):  
Analytical Models ◽  
Test Results ◽  
In Situ Tests ◽  
Design Problems ◽  
Root Reinforcement ◽  
And Performance

This paper reviews analytical models that are used to evaluate results of laboratory and in situ tests on soil reinforced by vegetation roots and performance of slopes with vegetation. Predicted and observed performances are compared to illustrate the accuracy and refinement of the models and their relationships to the quality of the available data. General guidelines for application to design problems are provided.

Effect of cementation on the small-strain parameters of sands

2001 ◽  
Vol 38 (1) ◽  
pp. 191-199 ◽  
Author(s):  
A L Fernandez ◽  
J C Santamarina
Keyword(s):  
Laboratory Test ◽  
Experimental Studies ◽  
Small Strain ◽  
Test Results ◽  
Loading History ◽  
Viscous Losses ◽  
Laboratory Test Results ◽  
Geotechnical Design ◽  
Selection Of

Natural cementation affects the properties of soils, the interpretation of in situ and laboratory test results, and the selection of criteria for geotechnical design. In this paper, published experimental studies are reviewed, a microscale analysis is presented of the effect of cementation on small-strain stiffness for distinct stress-cementation histories, and the effect of cementation on small-strain velocity and damping is experimentally studied. Observations include the prevailing effects of cementation over effective stress, the coexistence of frictional and viscous losses, and the effects of decementation when the medium is unloaded from the level of confinement prevailing during cementation.Key words: wave velocity, seismic response, stiffness, damping, sampling effects, loading history.

scholarly journals Specificity of strength calculation for glued-in steel rods in LVL with unidirectional veneer

2018 ◽  
Vol 2 (51) ◽  
pp. 196-201
Author(s):  
Andrii Bidakov ◽  
Evhenyi Raspopov ◽  
Oksana Pustovoitova
Keyword(s):  
Comparative Analysis ◽  
Failure Mode ◽  
Cross Section ◽  
Joint Strength ◽  
Design Method ◽  
Strength Calculation ◽  
Test Results ◽  
Rigid Connection ◽  
The Cross ◽  
Made In

Design of joints of LVL elements with glued-in steel rods and metal connectors is considered as semi-rigid connection and requires taking of account the compliance. A comparative analysis of the test results of the beams with a metal connector and glued-in steel rods as well as solid beams is made in the paper. Design method of glued-in rods in LVL is proposed and taken into account failure mode. It allows reducing the distance between the axes of the rods as well as the distance from the rod axіs to the edges in the cross section of the beam and increasing the joint strength.

Benchmarking of VIV Suppression Systems

2008 ◽  
Author(s):  
Kenneth J. Schaudt ◽  
Christopher Wajnikonis ◽  
Don Spencer ◽  
Jie Xu ◽  
Steve Leverette ◽  
...  
Keyword(s):  
Reynolds Number ◽  
The Body ◽  
Test Results ◽  
In Situ Tests ◽  
Image Velocimetry ◽  
High Reynolds ◽  
Viv Suppression ◽  
Almost All ◽  
Flow Splitter

A new form of Vortex-Induced Vibration (VIV) suppression device, the AIMS Dual-fin Flow Splitter (ADFS), has been developed, tested and benchmarked against bare-pipe, 5d and 15d pitch strakes and conventional teardrop fairings. Testing included high-mode number in-situ tests as well as low Reynolds number (<300,000) and high Reynolds number (<1.9 million) forced and free tank tests. Finally, wind tunnel tests and in-water Particle Image Velocimetry (PIV) were used to test the hypothesis that the dual-fin flow splitter replaces the oscillating wake of a blunt body with a stable, attached circulation behind the body and between the fins. Such a replacement was hypothesized to result in reduced drag, and the elimination of almost all VIV. The paper will describe the testing program and results, and present the incorporation of the test results into riser models.

Initial DPSH Soil Test Results with Accelerometer Installed in the Probe Cone

2016 ◽  
Author(s):  
Kęstutis Kelevišius ◽  
Gintaras Žaržojus
Keyword(s):  
Soil Analysis ◽  
Cohesive Soil ◽  
Test Results ◽  
Cone Penetration ◽  
In Situ Tests ◽  
Soil Response ◽  
Dynamic Penetration ◽  
Dynamic Cone Penetration ◽  
Cpt Test

Dynamic penetration test (DPSH) is one of the large amount of soil in-situ tests are known. In world practice, this method usually used for granular soil investigations although it could be applied in cohesive soils. Correlation of received DPSH test results with soil properties is complex and often not reliable. Especially it becomes obvious after application in cohesive soil analysis. In most cases, correlation depends on soil response to dynamic cone penetration and deformation of dynamic sounding equipment. Measurement of cone accelerations allows precisely evaluate loss of hammer energy, displacement of the cone during strike and other parameters. Correlation of DPSH (measured acceleration of the cone) and CPT test results are presented in this article. In this article also presented studies of possibilities to determine dynamic soil characteristics.

scholarly journals OPINION ANALYSIS GOING CONCERN THROUGH AUDITOR QUALITY AND AUDITOR EXPERIENCE

2018 ◽  
Vol 12 (1) ◽  
pp. 65-73
Author(s):  
Retno Wulandari ◽  
Ida Nuryana
Keyword(s):  
Audit Quality ◽  
Test Reliability ◽  
Test Results ◽  
Accounting Firm ◽  
The Public ◽  
Going Concern ◽  
Auditor Quality ◽  
Going Concern Opinion ◽  
Measuring Tool

The research was conducted in Malang City area with auditor as the population while the sample with pursposive sampling while the data analysis used is variable test with linkert scale and using SPPS statitisk test. In this study conducted at the Public Accounting Firm in Malang, showed that by using validity test, reliability, assumption Heterokedastisitas, multicolinierity assumption test, hypothesis testing simultaneously and partial and autocorrelation test showed that the questionnaire used by the researchers is feasible as a measuring tool for analysis in this study and provide consistent results. In the test results Hypothesis gives results that reject Ho and accept the hypothesis of research Ha, so that the auditor experience and audit quality together provide a significant effect on going concern opinion. Partial experience does not affect the giving of going concern opinion while the quality of audit partially affect the giving of going concern opinion.

scholarly journals The analysis on the correlation parameters of the embankment compaction under in situ conditions

2013 ◽  
Vol 12 (3) ◽  
pp. 097-104
Author(s):  
Maciej Kumor ◽  
Łukasz Kumor ◽  
Joanna Farmas
Keyword(s):  
Particle Size ◽  
In Situ Tests ◽  
Geotechnical Assessment ◽  
In Situ Conditions ◽  
Wide Range ◽  
Correlation Parameters ◽  
And Control

Geotechnical assessment of the implementation correctness of a road embankment wide range of issues, among which important selection and control of the quality of the earthworks are extremely significant. The article presents results of in situ tests determining correlations between the depending parameters defined by a static plate – VSS test – E1 and E2, and obtained from the study LFG Dynamic Load Plate. Studies indicate that the determination of the correlation between the parameters characterizing the particle size distribution (Cc, Cu, D10, D20, D30, D60), and the compaction parameters obtained by examining the compaction of sand embankment (Evd, E1, E2, I0) is physically complex and hence extremely difficult. 

The effectiveness of brooding of eggs of crosses lohmann of different selection

2020 ◽  
pp. 12-20
Author(s):  
O. Gorelik ◽  
S. Kharlap
Keyword(s):  
Biological Control ◽  
Comparative Analysis ◽  
Genetic Factors ◽  
Poultry Farm ◽  
Auxiliary Equipment ◽  
Frozen Embryos ◽  
The Cross ◽  
Hatching Eggs ◽  
The Cost

The technological process of brooding is closely related to the biological usefulness of eggs, the mode of their storage before brooding, the technical characteristics and level of operation of brooders and auxiliary equipment, the brooding technique and the qualification of service personnel. It is constantly work to improve the quality of hatching eggs and bring the brooding environments closer to the natural optimum. Many factors including genetic factors play an important role in the quality of the hatchable egg. The purpose of the research was to carry out a comparative analysis of the technology and effectiveness of brooding of eggs of crosses of Lomann of different selection: Lohmann White, Lohmann Brown, Lohmann Sandy in a poultry farm in the Sverdlovsk region. It has been found as a result of the conducted research that the first biological control of the cross Lohmann White was superior to the cross Lohmann Brown and Lohmann Sandy. After the second biological control a large number of frozen embryos have been detected in cross Lohmann White – 7042 pieces. Crosses Lohmann Brown and Lohmann Sandy were almost identical in terms of biological control after brooding. The large number of embryos died in the group of eggs of the cross Lohmann White – 14.03 % of eggs were unfertilized, the blood-ring was set at 1,8 %; frozen – 16,3 %, weak – 2,8 %, crippled – 4,3 %, suffocated – 7,2 % compared to other crosses, this was more than 2–4 times, depending on the cause. When calculating the effectiveness of brooding the leader was cross Lohmann White where yield of chickens was 80,25 % and the cost of chickens accepted for rearing was 254 242,5 rubles. In the crosses Lohmann Brown and Lohmann Sandy the cost of chickens accepted for rearing were 112 815 rubles and 116 902,5 rubles, respectively. Thus, the advantage of the hatchable egg of the cross Lohmann White has been established.

Applicatons of Hydration Thermodynamics to In-Situ Test Results

1993 ◽  
Vol 333 ◽  
Author(s):  
M. J. Plodinec ◽  
G. G. Wicks
Keyword(s):  
Laboratory Tests ◽  
Glass Production ◽  
Natural Environments ◽  
Test Results ◽  
In Situ Tests ◽  
Important Conclusion ◽  
In Situ Test ◽  
Long Term Performance ◽  
Term Performance

ABSTRACTAn extremely important question for the eventual disposal of glass in natural environments is the relevance of laboratory testing of glass durability to the long-term performance of glass in geologic environments. The purpose of this study was to attempt to provide an empirical answer to that question, by applying the hydration thermodynamics approach (which has successfully been applied to laboratory tests of glass durability) to the results of longer-term testing in natural environments.The results show that hydration thermodynamics is a useful tool for explaining the effects of glass composition observed in in-situ tests, in several environments. Thus, it appears to provide a link between laboratory tests of glass durability and the results of in-situ tests in natural environments. Perhaps the most important conclusion of this effort is that the in-situ test results emphasize the importance of control of chemical composition during glass production as a means of achieving a durable glass.

scholarly journals Analysis Study of The Comparative Quality of Patient Services Before and After Covid-19 Pandemic in Installation of Siloam Hospital TB Simatupang Installation

2020 ◽  
Author(s):  
Dian Agnesa Sembiring ◽  
◽  
Atik Nurwahyuni ◽  
Wahyu Sulistiadi ◽  
◽  
...  
Keyword(s):  
Service Quality ◽  
Test Reliability ◽  
Quality Of Services ◽  
Test Results ◽  
Five Dimensions ◽  
Before And After ◽  
Patient Service ◽  
Better Than ◽  
Urgent Action

ABSTRACT Background: In the COVID-19 (Coronavirus Disease 2019) pandemic crisis that has hit Indonesia since early March 2020, urgent action is needed to overcome the situation while maintaining and improving relationships with customers so that they are still satisfied with the quality of services in hospitals, especially inpatient services. Since the COVID-19 pandemic, there has been a significant decrease in the number of inpatient visits at Siloam Hospitals TB Simatupang. This study aimed to analyze the comparison of the level of quality of patient service before and after the COVID-19 pandemic in installation of Siloam hospital TB Simatupang installation. Subjects and Method: This was a descriptive observational study conducted at Siloam Hospitals TB Simatupang from September 2020. A sample of 88 patients was selected by purposive sampling. The data was collected by questionnaire. The operationalization of this research variable is service quality, which is measured from five dimensions, namely Tangibles, Reliability, Responsiveness, Assurance, and Empathy. The data analysis used a series of tests such as validity test, reliability test, descriptive statistics and independent sample T-test. Results: During the COVID-19 pandemic, patients had a better perception than before the COVID-19 pandemic, it can be seen from service quality (Mean= 4.11), while during the COVID-19 pandemic (Mean= 4.250). Conclusion: Quality of services provided in outpatient installations during the COVID-19 pandemic is better than before the COVID-19. Keywords: service quality, COVID-19, outpatient Correspondence: Dian Agnesa Sembiring. Magister Program in Hospital Administration. Faculty of Public Health, University of Indonesia, Depok, West Java. Email: [email protected] DOI: https://doi.org/10.26911/the7thicph.04.23

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