scholarly journals Evaluation of installation effects on set-up of field displacement piles in sand

2019 ◽  
Vol 56 (4) ◽  
pp. 461-472 ◽  
Author(s):  
Ivana Anusic ◽  
Barry M. Lehane ◽  
Gudmund R. Eiksund ◽  
Morten A. Liingaard

The paper presents results from a new series of tests on displacement piles in sand, involving different installation modes, and combines these with results from previous tests at the same site as well as with test data at two other well-investigated sand sites to provide fresh insights into factors affecting “short-term” capacity and set-up of shaft friction. It is shown that the shaft capacity measured shortly after installation reduces systematically with the logarithm of the number of impact blows or jacking increments per unit shaft area imparted during installation. However, the degree of set-up of shaft friction for piles increases with an increase in the number of blows, and piles installed using a large number of blows can attain highest “long-term” shaft capacities, despite having the lowest short-term capacity. The tests indicated that the driving impact frequency had a relatively small influence on shaft friction, while piles installed by vibration attain short-term capacities comparable to driven impact piles, but showed negative set-up.

10.29007/cfr2 ◽  
2018 ◽  
Author(s):  
Zunoon Parambath ◽  
Nilupa Udawatta

Recession is considered as a major threat to the economy as it slows down economic activities. The property development sector is extremely responsive to these economic conditions. Thus, it is crucial to understand causes, effects and strategies for property developers to survive in a recession without any ill effects. Thus, this research aimed to develop a framework for property developers to identify appropriate survival strategies in recession. A comprehensive literature review was conducted in this research to achieve the above mentioned aim. The results of this study indicated that recession prompts negative impacts on property development sector resulting in unemployment, lower demand, production and revenue, decline in resources and high level of competition. According to the results, the survival strategies were classified into short-term and long-term strategies. The short term strategies include: implementing management tactics, cut down of operating costs, keeping financing lines set up, timely repayment of debts, setting vital new objectives for the future, undertaking shorter time span developments, specialisation in favoured market, renegotiating deals and contracts. The long-term strategies include retrenchment, restructuring, investment and ambidextrous strategies. Similarly, attention should be paid to predict any changes in the economic environment that can influence property development activities and it is necessary to carefully evaluate investment activities to increase sales, profits and market shares of property developers. Preparing for a crisis is doubtlessly the ideal approach as it can facilitate both survival and growth. Thus, the property developers can implement these suggested strategies in their businesses to enhance their practices.


2014 ◽  
Vol 29 (4) ◽  
pp. 321-325
Author(s):  
Jovica Praskalo ◽  
Jasna Davidovic ◽  
Biljana Kocic ◽  
Monika Zivkovic ◽  
Svetlana Pejovic

In order to set up a successful mammography screening program in the Republic of Srpska, a Siemens Mammomat 1000 X-ray machine was selected for analysis as the said mammography system is widely used in clinical practice. The variations in tube parameters (specific air kerma, high-voltage accuracy and reproducibility, linearity between exposure and dose exposure time) were monitored over a five-year period, from 2008 to 2012. In addition, due to observed daily fluctuations for chosen parameters, a series of measurements were performed three times a day within a single-month period (mainly October 2012). The goal of such an experimental set up is to assess short-term and long-term stability of tube parameters in the given mammography unit and to make a comparison between them. The present paper shows how an early detection of significant parameter fluctuations can help eliminate irregularities and optimize the performance of mammography systems.


2021 ◽  
Vol 41 (7) ◽  
pp. 3523-3534
Author(s):  
PIOTR KULIG ◽  
PRZEMYSŁAW NOWAKOWSKI ◽  
MAREK SIERZĘGA ◽  
RADOSŁAW PACH ◽  
OLIWIA MAJEWSKA ◽  
...  

1990 ◽  
Vol 68 (3) ◽  
pp. 433-441 ◽  
Author(s):  
Ian L. Jones ◽  
Anthony J. Gaston ◽  
J. Bruce Falls

We studied factors influencing variation in nightly levels of activity (birds arriving and vocalizing) and numbers of birds staging offshore at a colony of Ancient Murrelets at Reef Island, British Columbia, during 1984, 1985, and 1986. Activity was restricted to the hours of darkness and extremely variable in magnitude from night to night. The rate of entry into burrows tended to decrease, and the amount of vocalization and numbers of birds at the staging area increased during the nesting season. We detected an underlying 4-day cyclical pattern of attendance. Nightly variability of activity at the colony was affected by moonlight and weather conditions. Since activity, particularly vocalization, was reduced on moonlit nights, we suggest that nocturnal colony attendance is a strategy to avoid diurnal predators in this species. The largest numbers of birds were present and vocalizing at the colony on calm moonless nights. Weather conditions explained a substantial proportion of the night to night variability in murrelet activity. Among weather variables, wind speed had the most consistent effect and was particularly important in 1985. Both short-term, i.e., of a particular night, and long-term, i.e., over the previous 3 days, conditions influenced activity. Our observations suggest that direct weather effects at the colony may be more important than weather effects related to foraging conditions. Interyear differences in activity may have resulted from the interaction of weather and general foraging conditions.


2018 ◽  
Vol 14 (2) ◽  
pp. 97
Author(s):  
Danny Indrawardhana ◽  
Tatong Harijanto ◽  
Ferdinandus Stevanus Kakiay

Abstract: Data of pharmaceutical quality indicator in Karsa Husada Batu Hospital in January-August 2017 showed non-conformance indicator of drug stock void figure with standard. Based on this, in this present study aim to analyze the factors that influence the occurrence of drug stock void. The research used descriptive method. The results of the study indicate that there are five problems causing the occurrence of drug stock void, the coordination between units not yet running, the implementation of the pharmaceutical HIS that has not been operated, the flow of procurement that has not run optimally, the reporting system of drug stock in the unused user unit and the lack of pharmaceutical personnel in the procurement of drug stock. FGD results indicate the need for plan of action. Short-term programs include daily drug stock reporting and analysis of drug procurement flow. Long-term program in the form of pharmaceutical HIS evaluation, data configuration procedure and report into existing pharmaceutical HIS and conduct socialization/training of pharmaceutical HIS that has been configured. Keywords: pharmaceutial service standard, drug stock void, pharmaceutical Hospital Information System (HIS).


Politik ◽  
2013 ◽  
Vol 16 (1) ◽  
Author(s):  
Andrew Hughes Hallet ◽  
Svend E. Hougaard Jensen

This paper o ers a critical assessment of the scal set-up in the Euro Area and considers a new framework for achieving scal discipline. e key idea is an inter-temporal assignment where national scal policies focus on long-term objectives and a common monetary policy on short-term objectives. e result is a self-stabilising set-up where the enforcement problem has largely been resolved. For practical implementation purposes, scal policy is stated in terms of a target for the public debt-to-GDP ratio. We argue that the debt target should be set in a forward-looking fashion to account for implicit liabilities, such as the discounted budgetary impact of changing demographics in addition to conventional debt measures. 


2015 ◽  
Vol 6 (2) ◽  
pp. 30-42 ◽  
Author(s):  
Yas A. Alsultanny ◽  
Fatma M. Alnassar

The IT departments must have green IT readiness to control emissions from data centres and selecting equipments of low power consumption. The purpose of this study is to evaluate the factors affecting green IT readiness. A questionnaire of developed to evaluate green IT readiness from the perspective of the IT staff. The questionnaire divided into two parts. The first part is for demographic information and general questions. The second part for green IT dimensions; technology, practice, policy, governance, and attitude. The data collected from 401 respondents. The results showed that the factors; technology, practice, attitude, and maintenance have an agree degree of agreement, while the factors; policy, governance, and green IT readiness have neutral degree of agreement. The governance has the highest correlation and influence on green IT readiness. The study recommends organizations, to setup strategies for implementing green IT as short-term solutions, and the government needs new laws and policies to implement green IT as a long-term solution.


Sign in / Sign up

Export Citation Format

Share Document