Transmission planning in a deregulated environment

The worldwide trend for the deregulation of the electricity generation and transmission industries has led to dramatic changes in system operation and planning procedures. The optimum approach to transmission-expansion planning in a deregulated environment is an open problem especially when the responsibilities of the organisations carrying out the planning work need to be addressed. To date there is a consensus that the system operator and network manager perform the expansion planning work in a centralised way. However, with an increasing input from the electricity market, the objectives, constraints and approaches toward transmission planning should be carefully designed to ensure system reliability as well as meeting the market requirements. A market-oriented approach for transmission planning in a deregulated environment is proposed. Case studies using the IEEE 14-bus system and the Australian national electricity market grid are performed. In addition, the proposed method is compared with a traditional planning method to further verify its effectiveness.

Short-term electricity price forecasting using wavelet and SVM techniques

In deregulated electricity market, modeling and forecasting the spot price present a number of challenges. By applying wavelet and support vector machine techniques, a new time series model for short term electricity price forecasting has been developed in this paper. The model employs both historical price and other important information, such as load capacity and weather (temperature), to forecast the price of one or more time steps ahead. The developed model has been evaluated with the actual data from Australian National Electricity Market. The simulation results demonstrated that the forecast model is capable of forecasting the electricity price with a reasonable forecasting accuracy.

A hitelbiztosítékok jogi szabályozása és a gazdasági versenyképesség összefüggései

A hitelbiztosítékok gazdasági hátterének a vizsgálata során elemezni kell a biztosítékok és a hitelezés, illetve a hitelezési piac kapcsolatát, valamint a biztosítékok és a fizetésképtelenségi eljárások viszonyát. A biztosítékok közül a zálogjog kötődik leginkább a tőke- és hitelpiacokhoz. Ezt a viszonyt a tanulmány konkrét történeti példákon keresztül is megvizsgálja. Különösen fontos ebből a szempontból a német jelzálogjogi szabályozás legutóbbi, 2008-as változásainak bemutatása. Ebből a magyar jogalkotó számára is hasznos következtetéseket lehet levonni. A zálogjog mellett a tanulmány bemutatja a kezesség intézményét is. A kezesség hatályos jogi szabályozása több szempontból hiányos, nem felel meg a gazdasági élet igényeinek. A dolgozat ehhez kapcsolódóan javaslatokat is megfogalmaz a jövőbeni jogi szabályozásra vonatkozóan. ----- Abstract: The assessment of the economic background of loan guarantees demands an analysis of the interplay between guarantees and lending and loan market, on one hand and between the guarantees and bankruptcy, on the other hand. Pledges are most connected to capital and loan markets. In this context is specifically important the German law on pledge, including the amendments from 2008. German law offers useful lessons for the Hungarian legislator. Besides the pledge the research presents the institution of suretyship as well. The legal framework on suretyship has many gaps and does not comply with the needs of economy. The paper makes recommendations on future legislation

The expansion of soybean cultivation in Campeche, México: Problematic and perspectives

The soybean is the grain in which greater food dependency has Mexico, reason why as of 2008, the government has promoted his culture, granting excellent subsidies, as much to producers as to buyers of the grain, thus contributing to a recent process of expansion in certain states, as it happens in Campeche. The objetive of this article is the analysis of the characteristics and effects of those supports, as well as of the rest of factors that until today they have taken to the producers of the mentioned state to initiate or to expand the cultivation of the soybean. The findings of the investigation reveal that although the producers have improved their levels of income, the process is vulnerable, as it depends on variables like the governmental supports, the international prices of the soybean and exchange rate. Although the study of the negative effects of genetically modified soybeans (GM) in other areas (environment, biodiversity, deforestation, human and animal health) is not the purpose of this investigation, some information will be provided, as on the conflict between soybean producers and beekeepers in the state of Campeche.

From nutrients to food literacy

This paper is based on a webinar broadcast by the Home Economics Institute of Australia in 2015. I should make clear at the outset that I will be discussing the academic literature, particularly that relating to nutrition education and foodliteracy that reports studies with measured outcomes. This may seem ‘last century’ to many Australian home economics teachers who long ago moved from teaching about nutrients to education about dietary practices. However, in nutrition science there has long been a fascination with the possible effects of education about nutrition on disease risks and outcomes. There has been an expectation among health researchers and governments that education should reduce disease risks and promote wellbeing among young people. I think this view is too narrow and unrealistic in contrast to more holistic approaches such as those of home economics and the emerging area of food literacy. In this brief overview I will discuss four areas to dowith the emerging area of food literacy education. First, I will discuss the emergence of a broader view of food and dietary patterns in the nutrition sciences and the reasons for this. Secondly, I will explore the competing assumptions behind ‘education’ versus those of ‘health promotion’ and public health, followed by different disciplinary views of the emerging area of food literacy with its emphasis on competencies. Finally, I will explore some interesting new developments in food literacy education.

The channels of monetary policy triggered by central bank actions and statements in the Australian equity market

Owing to the discrete disclosure practices of the Reserve Bank of Australia, this paper provides new evidence on the channels of monetary policy triggered by central bank actions (monetary policy announcements) and statements (explanatory minutes releases), in the Australian equity market. Both monetary policy announcements and explanatory minutes releases are shown to have a significant and comparable impact on the returns and volatility of the Australian equity market. Further, distinct from US and European studies that find strong evidence of the interest rate, bank loan and balance sheet channels and no evidence of the exchange rate channel following central bank actions, this paper finds that monetary policy impacts the Australian equity market via the exchange rate, interest rate and bank loan channels of monetary policy, with only weak evidence of the balance sheet channel of monetary policy. These channels are found to be operating irrespective of the trigger (monetary policy announcements or explanatory minutes releases), though results are somewhat weaker when examining the explanatory minutes releases. These results have important implications for central bank officials and financial market participants alike: by confirming a comparable avenue to affect monetary policy; and providing an explication of its impact on the Australian equity market.

International education, the formation of capital and graduate employment : Chinese accounting graduates’ experiences of the Australian labour market

Since the late 1970s, international education has steadily gained in popularity in China.An emerging middle class seeks to strengthen its position in China’s rapidly stratifyingsociety under its socialist market economy with the shift from wealth creation for all towealth concentration for a few. Previously, a foreign qualification was considered apassport to success in either the host or home country’s labour market. But the growingpopularity of overseas study, coupled with the massification of the Chinese highereducation, means Chinese international students are seeking to distinguish themselvesin an increasingly competitive global labour market. This longitudinal study of internationalgraduates, backgrounded by Australian employer perceptions, examines thejourneys of 13 Chinese accounting graduates as they attempt to transition from anAustralian university into the Australian labour market. Bourdieu’s thinking tools offield, capital, disposition and habitus are utilised to consider how different cultural,social and linguistic capitals inform employer understandings of ‘employability’ meantChinese accounting graduates significantly adjusted their life goals.

The impact of spin on Australian real estate journalism : a Queensland study

Regardless of ‘bear’ or ‘bull’ markets, the great Australian dream remains to own your own home. Central to this dream of home ownership is unflagging interest in the property market, reflected in bulging real estate news sections of newspapers in South East Queensland, the focus area for this thesis research. While there has been much scholarly research into other areas of public relations spin and its impact on news-gathering processes, there appears to be next to no research on real estate spin, how it is prepared and by whom, and journalism’s attitude to and the managing of the spin. Real estate spin remains an under-researched topic requiring further investigation not only in South East Queensland but Australia-wide given the ‘big bucks’ allotted to the promotion of real estate and the income it generates for news media outlets, particularly newspapers. This thesis examines the influence of public relations practitioners and journalists specialising in real estate spin through interviews, content analysis, and how real estate spin envelopes itself in today’s society. From content analyses and observations of journalism in the real estate rounds of the two major newspapers in South East Queensland, I found that journalists were using massive quantities of real estate spin supplied by PR practitioners and other associated industry sources. This spin is supplanting investigative newsroom journalism, thus allowing newspapers to operate with minimal staffing levels yet still able to publish large weekly real estate news sections. My research also revealed growing commercialisation of real estate news through increasing outsourcing of journalistic work to a writing bureau, which could jeopardise both the professions of journalism and public relations in the future.

The relationship between implied and realized volatility : evidence from the Australian stock index option market

This paper examines the relationship between the volatility implied in option prices and the subsequently realized volatility by using the S&P/ASX 200 index options (XJO) traded on the Australian Stock Exchange (ASX) during a period of 5 years. Unlike stock index options such as the S&P 100 index options in the US market, the S&P/ASX 200 index options are traded infrequently and in low volumes, and have a long maturity cycle. Thus an errors-in-variables problem for measurement of implied volatility is more likely to exist. After accounting for this problem by instrumental variable method, it is found that both call and put implied volatilities are superior to historical volatility in forecasting future realized volatility. Moreover, implied call volatility is nearly an unbiased forecast of future volatility.