Fractional quantum Hall effect in second subband of a 2DES

In the present paper we report on the experimental electron sheet density vs. magnetic field diagram for the magnetoresistance R(xx) of a two-dimensional electron system (2DES) with two occupied subbands. For magnetic fields above 9T, we found fractional quantum Hall levels centered around the filing factor v = 3/2 in both the two occupied electric subbands. We focused specially on the fractional levels of the second subband, whose experimental values of the magnetic field B of their minima do not obey a periodicity law in 1/|B-B(c)|, where B(c) is the critical field at the filling factor v = 3/2, and we explain this fact entirely in the framework of the composite fermions theory. We use a simple theoretical model to give a possible explanation for the fact. Copyright (c) EPLA, 2011

Stoichiometry and thermodynamics of the interaction between the C-terminus of human 90 kDa heat shock protein Hsp90 and the mitochondrial translocase of outer membrane Tom70

A large majority of the 1000-1500 proteins in the mitochondria are encoded by the nuclear genome, and therefore, they are translated in the cytosol in the form and contain signals to enable the import of proteins into the organelle. The TOM complex is the major translocase of the outer membrane responsible for preprotein translocation. It consists of a general import pore complex and two membrane import receptors, Tom20 and Tom70. Tom70 contains a characteristic TPR domain, which is a docking site for the Hsp70 and Hsp90 chaperones. These chaperones are involved in protecting cytosolic preproteins from aggregation and then in delivering them to the TOM complex. Although highly significant, many aspects of the interaction between Tom70 and Hsp90 are still uncertain. Thus, we used biophysical tools to study the interaction between the C-terminal domain of Hsp90 (C-Hsp90), which contains the EEVD motif that binds to TPR domains, and the cytosolic fragment of Tom70. The results indicate a stoichiometry of binding of one monomer of Tom70 per dimer of C-Hsp90 with a K(D) of 360 30 nM, and the stoichiometry and thermodynamic parameters obtained suggested that Tom70 presents a different mechanism of interaction with Hsp90 when compared with other TPR proteins investigated. (C) 2011 Elsevier Inc. All rights reserved.

A Linguistic Analysis of the Written Production of Second Language Learners : The Variation of Article Usage by Adult Chinese Learners of English

This study aims to test Robertson’s lexical transfer principle, which posits that Chinese learners use demonstratives (particularly this) and the numeral one as markers of definiteness and indefiniteness. This is tested by analysing Chinese learners’ written production collected from the Spoken and Written English Corpus of Chinese Learners 2.0 (SWECCL 2.0). The purpose is to understand the variation of article usage by adult Chinese learners of English. More specifically, the study examines to what extent articles, possessive and demonstrative pronouns are used in Chinese learners’ English and how definite and indefinite articles are used by the Chinese learners. Findings suggest that Robertson’s lexical transfer principle was corroborated by the present study. In addition, Chinese learners prefer to use demonstrative determiners, the possessive determiner our, and the numeral one to perform the function of marking definiteness and indefiniteness. In particular, the learners try to use the demonstrative determiners that and this in the anaphoric function instead of the definite article, and the demonstrative determiner those is frequently used in the cataphoric function. What is more, the learners use the numeral one as a marker of indefiniteness, and it is also used as a marker of definiteness in the anaphoric function. Further, the possessive determiner our is used as a marker of definiteness in larger situation uses referring to something unique. To this end, the study is able to show that the definite article is used to perform the function of marking indefiniteness, and in some particular contexts the definite article functions as a Chinese specifier in Chinese learners’ English. Also, the indefinite article is frequently used in quantifier phrases but is rarely used in other functions. There are three main reasons that may explain why Chinese learners use determiners variously. Firstly, the choice of determiners by Chinese learners is influenced by linguistic contexts. Secondly, because of learning strategies, Chinese learners try to ignore the anaphoric function and cataphoric function that they are not yet ready to process in article usage. Thirdly, interlanguage grammar influences the optionality in the use of articles. 

The law of insider trading in Australia

This book provides a detailed and practical analysis of Australian insider trading laws. The work: examines all fundamental concepts relating to insider trading such as 'who is an insider', 'what is inside information' and 'when is information generally available', together with commentaries on proposed changes to the laws and an examination of the impact of the most recent decisions, including Hannes, and Rivkin; provides a very detailed examination of the defences and exceptions, with particular attention to the operation of Chinese Walls; analyses fully and systematically the provisions on insider trading in the Corporations Act and the Criminal Code (Cth) within the context of decided cases and relevant secondary materials; covers comprehensively the penalties and remedies for contravention of the insider trading regime (including the intricate civil compensation provisions, and an up-to-date analysis of the civil penalties regime in light of ASIC v Petsas); and discusses the operation and effectiveness of continuous disclosure as a means of preventing insider trading.

Ensuring balance in corporate governance : parts 2F.1 and 2F.1A of the Corporations Law

Effective corporate governance must balance the competing, and at times conflicting, objectives of efficient endeavour and accountability. The CLERP amendments to the Corporations Law introduced on 13 March 2000 go a long way towards providing this balance. While the business judgement rule was introduced to promote efficient endeavour, Pts 2F.1 and 2F.1A maintain corporate accountability. This article compares Pts 2F.t and 2F.1A of the Corporations Law. It is argued that, although there are procedural and substantive differences between the two parts that need to be understood by practitioners, the importance of the two Parts is that they work together to provide for a much-needed improvement and enhancement of shareholder rights and remedies, thus upholding accountability in corporate governance.

On the permutation behaviour of Dickson polynomials of the second kind

The known permutation behaviour of the Dickson polynomials of the second kind in characteristic 3 is expanded and simplified.

Australian tort law reform: statutory principles of causation and the common law

By mid-2004, Parliaments in each Australian jurisdiction will either complete or will be in the process of partial codification of the law of torts. The reforms, including those to the law of negligence, are extensive. This article focuses on codification of the law of causation as an element of the cause of action in negligence. It examines the background to "tort reform", as the process has been labelled, and discusses the common law paradigm of negligence and various approaches to causation. It then analyses and compares the causation provisions in each jurisdiction.

What is 'political communication'? The rationale and scope of the implied freedom of political communication

The aim of this article is to identify what counts as ‘political communication’ for the purposes of the implied constitutional freedom of political communication. This is done for two reasons. The first is to delimit the scope of the implied freedom. The second is to clarify whether racial vilification is ‘political communication’, which is the initial step that must be taken in order to assess the constitutionality or otherwise of current Australian racial vilification laws. It is, however, necessary and desirable to establish a sound theoretical basis for the implied freedom before these questions can be properly considered. To this end, it is argued that a minimalist model of judicially-protected popular sovereignty underpins the implied freedom and is the rationale that must guide its interpretation and application. The analysis undertaken demonstrates that a generous zone of ‘political communication’ must attract constitutional protection and that racial vilification will in certain circumstances amount to ‘political communication’.

Holding the purse strings : the continuing evolution of human rights law and the potential liability of the finance industry for human rights abuses

While the responsibility of States and, in more recent times, corporations, has been thoroughly discussed in relation to human right~, a new stage of evolution may be emerging in relation to the liability of the financial backers of an enterprise that is accused of human rights abuses. This article considers the basis in international law for such emerging liability and examines some of the legal avenues used in recent domestic litigation against financial institutions. The article concludes by examining some of the relevant instruments of 'soft' international law and notes that although there is little in the way of concrete legislation or judicial precedent that would hold financial institutions responsible for the actions of those they invest in, the potential for the law to evolve in that direction is clear.

The shifting meaning of persecution in the Australian refugee law: How much must one suffer to be deserving of asylum?

Legislative changes to the meaning of persecution in Australia in the context of refugee law - courts' approach to what constitutes persecution in conflict with Parliament's understanding - level of harm that a person must endure in order to be eligible for refugee status - narrow definition of persecution should be adopted such that only those asylum seekers whose subsistence is imperilled should qualify as refugees.