The Optimized Dynamic Behavior of Short Embankment Based on Frequency Performance

Behrouz Gordan; Azlan Adnan

doi:10.4018/ijgee.2015070101

The Optimized Dynamic Behavior of Short Embankment Based on Frequency Performance

International Journal of Geotechnical Earthquake Engineering ◽

10.4018/ijgee.2015070101 ◽

2015 ◽

Vol 6 (2) ◽

pp. 1-11

Author(s):

Behrouz Gordan ◽

Azlan Adnan

Keyword(s):

Response Spectrum ◽

New Technology ◽

Free Vibration Analysis ◽

Horizontal Displacement ◽

Relative Displacement ◽

Dominant Frequency ◽

Modulus Ratio ◽

Depth Ratio ◽

Vertical Displacements ◽

The Impact

Due to the performance of embankment under the earthquake, relative displacement at both edges of the crest is very important for body cracks. It can be computed by dynamic analysis. In this way, response spectrum analysis and Rayleigh damping coefficient are dependent factors to dominant frequency. Based on the new technology using advanced programs to compute frequency, free vibration analysis as the basic technique and considering of different vibration modes is accessible. This research tried to evaluate the distribution of dominant frequencies for short embankment (H=30 meter) using Finite-Element Method (ANSYS 13). To evaluate of the frequency, elasticity modulus ratio and foundation depth ratio were the main objectives. Both were defined by the ratio between the embankment and foundation. As a result, maximum and minimum vertical displacements were located on both slopes, and maximum horizontal displacement was exposed at the crest. The dominant frequency increased as the modulus ratio decreased. In addition, dominant frequency decreased as the depth ratio increased. The impact of the modulus ratio to enhance frequency was greater than the depth ratio. In terms of contributing engineering, the amplitude of the dominant frequency (Hz) was finally optimized for modulus ratios (0.25-1.00) and depth ratios (0.1-1.00). For critical situation, modulus ratio was more than three, and the depth ratio was half of the unit. More research about medium embankment is recommended.

Download Full-text

Prediction of shear strain induced by blasting waves in surface structures based on coupled frequency, velocity, and displacement effects

Journal of Vibration and Control ◽

10.1177/1077546320935259 ◽

2020 ◽

pp. 107754632093525

Author(s):

Reza Nateghi ◽

Kamran Goshtasbi ◽

Hamid Reza Nejati

Keyword(s):

Response Spectrum ◽

Simple Procedure ◽

Structural Response ◽

Ground Vibration ◽

Horizontal Displacement ◽

Dominant Frequency ◽

Rock Formations ◽

Frequency Peak ◽

Geological Conditions ◽

Relative Stress

Blasting ground vibration is an undesirable side effect of using explosives to fragment rocks. There is not any universally accepted standard to determine limitations of blast vibrations; however, velocity is the most commonly used method to measure ground vibrations. Because the structural response is highly frequency dependent, the frequency content is an essential characteristic of blast-induced shock waves along with the velocity. The magnitude of blast-induced displacement or velocity and their relative stress and strain are directly related to the quantity of charge, distance from blasting point, and geological conditions. These effects were not considered in the response spectrum theory of structures. This article tries to propose a new procedure to predict the shear displacement and relative strain for optimization of blasting patterns before the explosion. It can be accomplished by representing the effects of both velocity and frequency on the horizontal displacement of the structures based on measurements undertaken by the authors in two different rock formations. In this study, collected data were analyzed statistically to determine the coupled effects of dominant frequency, peak particle velocity, and peak particle displacement to propose a simple procedure for predicting the range of blast-induced displacement and related strain in structures.

Download Full-text

The Process of Globalization and Its Impact on Media

European Journal of Multidisciplinary Studies ◽

10.26417/ejms.v1i4.p150-153 ◽

2016 ◽

Vol 1 (4) ◽

pp. 150

Author(s):

Veton Zejnullahi

Keyword(s):

New Technology ◽

World Order ◽

Modern Society ◽

Media Access ◽

Four Corners ◽

The World ◽

The Media ◽

The Republic ◽

Human Eyes ◽

The Impact

The process of globalization, which many times is considered as new world order is affecting all spheres of modern society but also the media. In this paper specifically we will see the impact of globalization because we see changing the media access to global problems in general being listed on these processes. We will see that the greatest difficulties will have small media as such because the process is moving in the direction of creating mega media which thanks to new technology are reaching to deliver news and information at the time of their occurrence through choked the small media. So it is fair to conclude that the rapid economic development and especially the technology have made the world seem "too small" to the human eyes, because for real-time we will communicate with the world with the only one Internet connection, and also all the information are take for the development of events in the four corners of the world and direct from the places when the events happen. Even Albanian space has not left out of this process because the media in the Republic of Albania and the Republic of Kosovo are adapted to the new conditions under the influence of the globalization process. This fact is proven powerful through creating new television packages, written the websites and newspapers in their possession.

Download Full-text

The impact of applying the Common Customs Tariff on the armenian export of Cut and Polished Gems to Russia

Economics and Management ◽

10.35854/1998-1627-2019-11-33-41 ◽

2019 ◽

pp. 33-41

Author(s):

V. L. Harutyunyan ◽

S. V. Dokholyan ◽

A. R. Makaryan

Keyword(s):

Manufacturing Sector ◽

Practical Implication ◽

Dominant Role ◽

New Technology ◽

Manufacturing Companies ◽

Medium Term ◽

Diamond Cutting ◽

Global Trends ◽

The Common ◽

The Impact

The presented study discusses the issues of applying the Common Customs Tariff (CCT) rates of the Eurasian Economic Union (EAEU) on rough diamonds and the impact thereof on the exports of stones cut and polished inArmeniaand then exported toRussia.Aim. The study aims to identify the possible strategies Armenian diamond cutting and polishing companies could adopt as a response to the application of the CCT rates on rough diamonds and how it would affect exports to various destinations, namely to Russia.Tasks. The authors analyze the current state of the gems and jewelry sector and substantiate the need to either integrate it into the jewelry manufacturing sector or to apply various strategies to facilitate exports to either Russia or other destinations in the medium term in response to the application of the CCT rates.Methods. This study uses general scientific methods of cognition, including analytical and methodological approaches and elements of forecasting. Possible strategies the Armenian diamond cutting and polishing companies could adopt in the medium term in response to the application of the EAEU CCT rates are determined using the analytical research method, forecasts in the context of the developments in the Armenian gem processing and jewelry market and global trends, statistical data on the imports and exports of cut and polished gems and jewelry for 2014–2018 published by the UN Comtrade Statistics.Results. Statistics on the exports of processed diamonds from 2014 to 2018 highlights the issue associated with the loss of competitiveness suffered by Armenian companies (mainly in comparison with Indian diamond cutters). The major global trends in the diamond cutting and polishing business indicate that it could be virtually impossible for Armenian cutters and polishers to compete with Indian companies in the medium term if they do not comes to investing in new technology to achieve operational efficiency. For these companies, it is important not to lose the Russian market due to an increase in the tariff rate and concentrate on the processing of gems that are larger than 1 carat. Another strategy to avoid an increase in the customs tariff rates would depend on the Armenian government’s ability to negotiate with Russia in respect of direct imports of diamond stones from Russian manufactures. Two other options for Armenian cutters involve focusing on cutting and polishing of rubies, sapphires, emeralds, etc. or integrating into the jewelry sector either by being the primary supplier or by considering this business as a channel to sell processed diamond stones by setting up their own jewelry manufacturing companies.Conclusions. With CCT going into effect in January 2021 and India’s dominant role in the diamond cutting and polishing business, Armenia needs to carefully consider all of the strategies the Armenian companies could adopt, as discussed above. As a member state of the EAEU, Armenia freely exports to Russia, however, further exports to Russia would depend on Armenia’s ability to ensure that cost-effective operations are in place, or to concentrate on the processing of precious gems rather than diamonds, or to switch to the manufacturing of jewelry items as a major export item.Practical Implication. The findings of this study could be of interest to the Ministry of Economy of the Republic of Armenia and Business Armenia that could be used in elaborating the strategy for the development of Armenian gems and jewelry sector of the economy.

Download Full-text

The Impact of Corporate Venture Capital on the Branding Efforts of New Technology Firms

SSRN Electronic Journal ◽

10.2139/ssrn.2296402 ◽

2013 ◽

Author(s):

Ikenna S. Uzuegbunam ◽

Brandon Ofem ◽

Satish Nambisan

Keyword(s):

Venture Capital ◽

New Technology ◽

Corporate Venture Capital ◽

Technology Firms ◽

Corporate Venture ◽

The Impact

Download Full-text

Quantifying the increase in fishing efficiency due to the use of drifting FADs equipped with echosounders in tropical tuna purse seine fisheries

ICES Journal of Marine Science ◽

10.1093/icesjms/fsaa216 ◽

2020 ◽

Author(s):

Gwenaëlle Wain ◽

Loreleï Guéry ◽

David Michael Kaplan ◽

Daniel Gaertner

Keyword(s):

New Technology ◽

Recent Change ◽

Purse Seine ◽

Catch Per Unit Effort ◽

Katsuwonus Pelamis ◽

Thunnus Obesus ◽

Efficiency Increase ◽

Tropical Tuna ◽

Floating Objects ◽

The Impact

Abstract Numerous pelagic species are known to associate with floating objects (FOBs), including tropical tunas. Purse seiners use this behaviour to facilitate the capture of tropical tunas by deploying artificial drifting fish aggregating devices (dFADs). One major recent change has been the integration of echosounders in satellite-tracked GPS buoys attached to FOBs, allowing fishers to remotely estimate fishable biomass. Understanding the effects of this new technology on catch of the three main tuna species (yellowfin tuna, Thunnus albacares; bigeye tuna, Thunnus obesus; and skipjack tuna, Katsuwonus pelamis) is important to accurately correct for this change in catch-per-unit-effort (CPUE) indices used for stock assessments. We analysed catch data from the French purse seine fleet for the period 2010–2017 in the Indian Ocean to assess the impact of this fleet’s switch to echosounder buoys around 2012. Results indicate that echosounders do not increase the probability a set will be succesful, but they have a positive effect on catch per set, with catches on average increasing by ≈2−2.5 tonnes per set (≈10%) when made on the vessel's own dFADs equipped with an echosounder buoy. Increases were due to a decrease in sets below ≈25 tonnes and an increase in those greater than ≈25 tonnes, with a non-linear transition around this threshold. This increase explains the considerable investment of purse seiners in echosounder buoys, but also raises concerns about bias in stock size estimates based on CPUE if we do not correct for this fishing efficiency increase.

Download Full-text

Aspects of Strength Testing of Tank Containers in Compliance with the Requirements of the UN Navigation Rules and Regulations

Journal of Marine Science and Engineering ◽

10.3390/jmse9030349 ◽

2021 ◽

Vol 9 (3) ◽

pp. 349

Author(s):

Andrii Sulym ◽

Pavlo Khozia ◽

Eduard Tretiak ◽

Václav Píštěk ◽

Oleksij Fomin ◽

...

Keyword(s):

Natural Frequencies ◽

Response Spectrum ◽

Experimental Curve ◽

Bulk Liquid ◽

Frequency Range ◽

Test Configuration ◽

Shock Response ◽

Shock Response Spectrum ◽

Spectrum Curve ◽

The Impact

This article deals with the method of computer-aided studies of the results of tank container impact tests to confirm the ability of portable tanks and multi-element gas containers to withstand the impact in the longitudinal direction on a specially equipped test rig or using a railway flat car by impacting a flat car with a striking car, in compliance with the requirements of the UN Navigation Rules and Regulations. It is shown that the main assessed characteristic of the UN requirements is the spectrum of the shock response (accelerations) for the interval natural frequencies of the shock pulse. The calculation of the points of the shock response spectrum curve based on the test results is reproduced in four stages. A test configuration of the impact testing of the railway flat car with a tank container is presented, and the impact is performed in such a way that, under a single impact, the shock spectrum curve obtained during the tests for both fittings subjected to impact repeats or exceeds the minimum shock spectrum curve for all frequencies in the range of 2 Hz to 100 Hz. Formulas for determining the relative displacements and accelerations for the interval natural frequencies of the shock wave are given. The research results are presented in graphical form, indicating that the experimental values of the shock response spectrum exceed the minimum permissible values; the equation of the experimental curve of the shock response spectrum in the frequency range 0–100 Hz is described by power-law dependence. The coefficients of the equation were determined by the statistical method of maximum likelihood with the determination factor being 0.897, which is a satisfactory value; a comparative analysis showed that the experimental curve of the impact response spectrum in the frequency range 0–100 Hz exceeds the normalized curve, which confirms compliance with regulatory requirements. A new test configuration is proposed using a tank car with a bulk liquid, the processes in which upon impact differ significantly from other freight wagons under longitudinal impact loads of the tank container. The hydraulic impact resulting from the impact on the tank container and the platform creates an overturning moment that causes the rear fittings to be unloaded.

Download Full-text

Accounting Information Systems in Public Sector towards Blockchain Technology Application: The Role of Accountants’ Emotional Intelligence in the Digital Age

Asian Journal of Law and Economics ◽

10.1515/ajle-2020-0052 ◽

2021 ◽

Vol 12 (1) ◽

pp. 73-94

Author(s):

Pham Quang Huy ◽

Vu Kien Phuc

Keyword(s):

Emotional Intelligence ◽

Public Sector ◽

New Technology ◽

Accounting Information ◽

Accounting Information System ◽

Accounting Information Systems ◽

Technology Application ◽

Public Sector Organization ◽

Blockchain Technology ◽

The Impact

Abstract This research ferreted out to inspect the interconnection between emotional intelligence (EI), Blockchain technology application (BLO) and the effectiveness of Accounting information system (AIS). Survey-based data obtained from 412 respondents were applied to validate the model hypotheses. Building on the statistical analysis with the support of SPSS 25.0 and SMART- PLS (partial least squares) 3.2.8 software package, the model results inferred the impact of EI on BLO. Besides, the outputs of the study accentuated on the importance of BLO on the effectiveness of AIS. These significant additions will optimistically inspire other scholars to carry on exploring the relationship between EI and BLO in enhancing the effectiveness of AIS in research settings as well as in explaining the results. On the other hand, taking these results into consideration could promote much better solutions for issues relevant to EI and new technology application among public sector organization (PSO) in term of increasing the performance of AIS.

Download Full-text

Room Size Influences Flow in Robotic-Assisted Surgery

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18157984 ◽

2021 ◽

Vol 18 (15) ◽

pp. 7984

Author(s):

Falisha Kanji ◽

Tara Cohen ◽

Myrtede Alfred ◽

Ashley Caron ◽

Samuel Lawton ◽

...

Keyword(s):

New Technology ◽

Surgical Robots ◽

Physical Size ◽

Robotic Assisted ◽

Surgical Technology ◽

Room Size ◽

Robotic Assisted Surgery ◽

Academic Hospitals ◽

Environmental Causes ◽

The Impact

The introduction of surgical technology into existing operating rooms (ORs) can place novel demands on staff and infrastructure. Despite the substantial physical size of the devices in robotic-assisted surgery (RAS), the workspace implications are rarely considered. This study aimed to explore the impact of OR size on the environmental causes of surgical flow disruptions (FDs) occurring during RAS. Fifty-six RAS procedures were observed at two academic hospitals between July 2019 and January 2021 across general, urologic, and gynecologic surgical specialties. A multiple regression analysis demonstrated significant effects of room size in the pre-docking phase (t = 2.170, df = 54, β = 0.017, p = 0.035) where the rate of FDs increased as room size increased, and docking phase (t = −2.488, df = 54, β = −0.017, p = 0.016) where the rate of FDs increased as room size decreased. Significant effects of site (pre-docking phase: p = 0.000 and docking phase: p = 0.000) were also demonstrated. Findings from this study demonstrate hitherto unrecognized spatial challenges involved with introducing surgical robots into the operating domain. While new technology may provide benefits towards patient safety, it is important to consider the needs of the technology prior to integration.

Download Full-text