THE ECONOMICS OF MARGINAL OFFSHORE OILFIELDS IN AUSTRALIA

1986 ◽  
Vol 26 (1) ◽  
pp. 67
Author(s):  
D.H. Heron ◽  
F.A. Jacobs

Australia's self sufficiency in oil will drop to below 50 per cent by the middle of the next decade unless major discoveries are made within the next few years. There is still a confusing series of permit regimes and fiscal frameworks applicable to exploration and development operations, and no indication of any upturn in offshore activity. If the decline in self sufficiency is to be halted, Industry needs to be assured that it will be allowed to operate under a simple unchanging set of rules such that it is guaranteed a fair return on its risk capital investment.There are many marginal oil discoveries which remain undeveloped for a variety of reasons, but the economics of their development must obviously be the one major limiting factor. A recoverable reserve of 15 million barrels of oil with peak production of about 8000 barrels of oil per day will in most instances provide a base development level with rate of return of 15 + per cent after tax. The new resource rent tax will have only a marginal impact on a development of this size, but the increasing impact of the resource rent tax as reserves and productivity increase above the base level will limit the rate of return on many marginal offshore discoveries to about 21 per cent.It is in marginal discoveries that there is a significant downside risk in development, and producers need to be assured of a reasonable risk loaded rate of return before committing to development. There are many ways of protecting operating companies from the relatively high risks of entering into a marginal offshore development. We have looked at only one of these and suggest that government might consider a lowering of the resource rent tax to 20 per cent for projects with reserves of less than 25 million barrels.

Land ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 479
Author(s):  
Julian Laabs ◽  
Daniel Knitter

In this study, we present a transparent and reproducible approach to model agricultural production with respect to environmental characteristics and available labour. Our research focuses on the city of Pergamon and its surroundings, with an emphasis on the transition between the Hellenistic and Roman Imperial Period, where widespread demographic changes took place. We investigated the degree of local self-sufficiency using different concepts of a city’s complementary region. Using simple topographic derivatives, we derive a measure of environmental suitability that we translate into a carrying capacity index. Our results show that workforce was not a limiting factor for local self-sufficiency. However, environmental carrying capacity may have been limiting in a scenario with a large population. An active investment into the environment, e.g., by the construction of terraces, could have helped to increase the degree of self-sufficiency. Future research should investigate the level of resilience of such a coupled socio-ecological system in relation to environmental and socio-cultural dynamics.


Author(s):  
Diego Azqueta ◽  
Álvaro Montoya

Rural poverty in underdeveloped countries is a critical issue. A fair amount of literature exists examining the conditions of pro-poor tourism development, as well as different ways to fight it. However, in some cases, and because of the existence of a limiting factor, a potential incompatibility between tourist development and other strategies can emerge, as well as the need to compare relative efficiency. An example of this potential conflict is the one posed by tourist development and the Multiple Use of Water Services strategy (MUS) to alleviate rural poverty. In this case, the limiting constraint is access to water. This paper analyses the impacts, direct and indirect, on poverty levels, of tourist development and MUS. the authors examine the Quindío Region in Colombia, where the MUS strategy is being implemented and where an ambitious tourist development plan may open social conflict regarding water supply. The results of this analysis shows that, even if the MUS strategy has a greater positive impact on poverty alleviation, in terms of income and employment generated per unit of water, its water footprint, contrary to expectations, is much higher than the one corresponding to the tourist sector. This may jeopardize its future development, calling for a more balanced approach.


1975 ◽  
Vol 8 (3) ◽  
pp. 364-377
Author(s):  
Hilary L. Seal

“Most people think that an insurance company's business is to make money out of insuring things. They are wrong. Its business is to take as much money off the public as possible, invest it successfully and hope that the conditions on which it was taken never happen.”The Economist, April 13, 1974 (p. 119)In order to motivate the series of Monte Carlo simulations we have carried out in the following article we would like readers to imagine that a small rural casualty insurance company, the Farm Fire and Flood Damage Ins. Co. (FFFDIC), is to be bought by an entrepreneur (whom we shall designate by EP) provided his consulting actuary (the author of this article) can satisfy his requirements which are as follow:(i) A 15-year investment is foreseen at the end of which time EP wishes to be able to sell, hopefully without loss.(ii) The risk-capital is to be invested and (although some of it must be in easily liquidable securities) should yield a rate of return comparable with that obtainable on the same amount of capital invested in the market.(iii) The premiums will not have risk-loadings, as such, but will be loaded for profit by 15%.(iv) The risk-capital should, on the average, be returnable at the end of the 15-year investment.


1957 ◽  
Vol 8 (1) ◽  
pp. 83 ◽  
Author(s):  
GL McClymont ◽  
KN Wynne ◽  
PK Briggs ◽  
MC Franklin

In an experiment lasting 60 days the effect of adding sodium chloride to five types of diet was studied in young Merino wethers. The diets used were 100 per cent. oat grain, and 50 : 50 as well as 75 : 25 mixtures of oat grain with lucerne chaff on the one hand, and with wheaten chaff on the other. The addition of 0.25 per cent. sodium chloride to these diets resulted in increased food consumption and improved efficiency of food utilization, with significant increases of 19-58 per cent. in body-weight gains. The unsupplemented diets contained 0.009-0.062 per cent. sodium and 0.05-0.42 per cent. chlorine. There were indications that the lack of sodium was the limiting factor in these diets, and that the sodium requirement of these sheep was greater than 0.06 per cent. of the diet, or 0.88 g per day. Dietary sodium intake did not affect serum-sodium levels, except those of sheep fed on the 50 : 50 mixture of oats and lucerne chaff in which they were significantly higher. Serum-potassium levels were slightly, but significantly, higher in sheep fed on the low-sodium diets. In a second experiment the two groups which had received the 75 : 25 mixture of oat grain and wheaten chaff were fed on the mixture for a further 29 days, but the group which had not received sodium chloride was given 0.37 per cent. sodium bicarbonate. The response was similar to that of the group which received sodium chloride.


Geophysics ◽  
2013 ◽  
Vol 78 (6) ◽  
pp. J87-J98 ◽  
Author(s):  
Felipe F. Melo ◽  
Valeria C. F. Barbosa ◽  
Leonardo Uieda ◽  
Vanderlei C. Oliveira Jr. ◽  
João B. C. Silva

We have developed a new method that drastically reduces the number of the source location estimates in Euler deconvolution to only one per anomaly. Our method employs the analytical estimators of the base level and of the horizontal and vertical source positions in Euler deconvolution as a function of the [Formula: see text]- and [Formula: see text]-coordinates of the observations. By assuming any tentative structural index (defining the geometry of the sources), our method automatically locates plateaus, on the maps of the horizontal coordinate estimates, indicating consistent estimates that are very close to the true corresponding coordinates. These plateaus are located in the neighborhood of the highest values of the anomaly and show a contrasting behavior with those estimates that form inclined planes at the anomaly borders. The plateaus are automatically located on the maps of the horizontal coordinate estimates by fitting a first-degree polynomial to these estimates in a moving-window scheme spanning all estimates. The positions where the angular coefficient estimates are closest to zero identify the plateaus of the horizontal coordinate estimates. The sample means of these horizontal coordinate estimates are the best horizontal location estimates. After mapping each plateau, our method takes as the best structural index the one that yields the minimum correlation between the total-field anomaly and the estimated base level over each plateau. By using the estimated structural index for each plateau, our approach extracts the vertical coordinate estimates over the corresponding plateau. The sample means of these estimates are the best depth location estimates in our method. When applied to synthetic data, our method yielded good results if the bodies produce weak- and mid-interfering anomalies. A test on real data over intrusions in the Goiás Alkaline Province, Brazil, retrieved sphere-like sources suggesting 3D bodies.


2009 ◽  
Vol 10 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Werner Neus ◽  
Andreas Walter

AbstractEmploying traditional event study methodology we examine the market reaction to layoff announcements of firms listed on the German stock market. We contribute to the international literature in this field with two major results. First, unlike anecdotal and similar to international evidence we report a negative and significant abnormal rate of return of −0.37 percent on the announcement day. Further, we find that the reason for the layoff announcement plays a decisive role in the revaluation process. On the one hand, stocks of firms that announce layoffs as a reaction to declining market conditions are associated with a more intense negative market response. On the other hand, even stocks of firms that intend to enhance their profitability by means of layoffs do not show a significant positive reaction.


2008 ◽  
Vol 1 (1) ◽  
pp. 1-24
Author(s):  
Apit Supriyadi ◽  
Mini Wijaya ◽  
Tedy Fardiansyah

For a large firm like PT LG Electronics Indonesia (LGEIN), which has resulted in high manufacturing utilization, require a few percent reductions in component prices every year. The one of potential project for cost reduction is tooling investment. After Livia is produced and the expenditure of new tooling is made, it is continually faced with the problem that current method computing profits are conventional without considering the expenditure of tooling in the long run. Finally, a firm’s capital budgeting decisions is needed because it defines its strategic direction. Four primary methods in the capital budget to decide whether or not the project should be accepted are: discounted payback, net present value, internal rate of return and profitability index. In addition, we use sensitivity analysis to indicate which factor has significant interfere with the project. The results generated that discounted payback is just 2 year 6 months less life of the project for 3 years, NPV generated positive result $3,502,387, and an IRR of this project is 25% greater than required rate of return 10% and profitability index gets 1.8 greater than 1. In sensitivity analysis shows that the project’s NPV is very sensitive to changes in sales and COGS, and relatively insensitive to changes in either growth rate or rate of return.In a method of capital budgeting analysis, Livia project could be accepted with initial investment for $4,199,288 and still more detailed analysis is required to support the expenditure.


2016 ◽  
Vol 10 (2) ◽  
pp. 231-248
Author(s):  
Jolanta Suchodolska

The study refers to the problem of the presence of the crisis in psychosocial development of young people – adolescents and young adults. Both the youth and young adults go through numerous, naturally present in human development, moments of increased tension resulting from the appetite for independence and self-sufficiency. This seems to be a common feature for both groups; both adolescents and young adults experience the burden due to overlapping obligations and commitments made to oneself and to the world and which comes from the specific social roles they assume as well as the development – related tasks they perform. The challenges are taken up to find self-fulfillment in numerous new roles, to achieve ambitions of everyday life as well as the future ones. Not surprisingly, in this period a man is believed to be, on the one hand, exposed to the experience of crisis (relating to the search for oneself and one’s own place in life, in social relationships and professional life) and, on the other hand, a young adult most intensely makes its network of social support for further years. In the study, the author refers to the research in which young adults confirm the presence of the crises in their lives. They identify and name these crisis situations and formulate their expectations of the sources and forms of support in the crisis.


2016 ◽  
Vol 6 (3) ◽  
pp. 101 ◽  
Author(s):  
Camilla Nordberg

Implications from the restructuring of Nordic eldercare include the incorporation of new categories of care workers and a redefinition of the terms of citizenship and participation in working life. Drawing on the idea that policy actors script care worker subjectivities, this article examines print media as a key arena where the cultural imaginary of care work is played out. The media has the potential to accommodate ideological complexity through the possible range of participatory actors. From the scripts promoted through the mediascape, we can learn about the positions understood as being (in)appropriate for migrant care workers. This study draws on the analysis of news and feature stories from 2003 to 2013 in the largest Finnish daily, Helsingin Sanomat, and in the periodical Kuntalehti, published by the Finnish Association of Local and Regional Authorities. The article points to tensions in Finnish media discourse, identifying ambiguous occupational scripts for migrant care workers—rooted in neoliberal repertoires of self-sufficiency and normative individualism on the one hand and helplessness and naivety on the other hand. It draws attention to an unsettling construction whereby migrant care workers are excluded from a long-term contract with the Finnish care labor market, and where social equality is conditioned to global redistribution.


2020 ◽  
Vol 493 (4) ◽  
pp. 5434-5455 ◽  
Author(s):  
Marta Spinelli ◽  
Anna Zoldan ◽  
Gabriella De Lucia ◽  
Lizhi Xie ◽  
Matteo Viel

ABSTRACT We present a comprehensive analysis of atomic hydrogen (H i) properties using a semi-analytical model of galaxy formation and N-body simulations covering a large cosmological volume at high resolution. We examine the H i mass function and the H i density, characterizing both their redshift evolution and their dependence on hosting halo mass. We analyse the H i content of dark matter haloes in the local Universe and up to redshift z = 5, discussing the contribution of different galaxy properties. We find that different assembly history plays a crucial role in the scatter of this relation. We propose new fitting functions useful for constructing mock H i maps with halo occupation distribution techniques. We investigate the H i clustering properties relevant for future 21 cm intensity mapping (IM) experiments, including the H i bias and the shot-noise level. The H i bias increases with redshift and it is roughly flat on the largest scales probed. The scale dependence is found at progressively larger scales with increasing redshift, apart from a dip feature at z = 0. The shot-noise values are consistent with the ones inferred by independent studies, confirming that shot noise will not be a limiting factor for IM experiments. We detail the contribution from various galaxy properties on the H i power spectrum and their relation to the halo bias. We find that H i poor satellite galaxies play an important role at the scales of the one-halo term. Finally, we present the 21 cm signal in redshift space, a fundamental prediction to be tested against data from future radio telescopes such as Square Kilometre Array.


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