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The dominant recent legal discourse concerning Bitcoin and later virtual currencies has been focused on regulatory issues such as anti-money laundering and financial and securities regulation. By contrast, scant attention has been given to the intersection between the uses of Bitcoin and commercial law even as its popularity has grown as both an asset class and as a means of payment for goods and services. In determining the commercial law consequences of transactions involving Bitcoin, the likely cross-border nature of Bitcoin-related transactions will give rise to choice of law issues which may have a determinative effect on a given dispute. Commercial disputes involving virtual currencies have already made their way into common law courts. This paper examines one of the most significant choice of law problems that arises – the law applicable to determine disputes concerning property in Bitcoins (and determining the situs of Bitcoins) through the lens of English conflict of laws. [ABSTRACT FROM AUTHOR]

This article constitutes the first in-depth study of press censorship in British Hong Kong during the first century of colonial rule. By revealing how the press, the Chinese press in particular, was continuously and systematically monitored and pervasively censored through the collaborative efforts of executive actions, legislative provisions and judicial decisions, this article further posits that the common law system practiced in British Hong Kong during the period under study was complicit in the imposition of an authoritarian form of law and order, and was more interested in preserving the British Empire's overseas territorial and economic possessions and managing the power equation in the region than in safeguarding individual liberties in Hong Kong. Hong Kong is often praised for its rule-of-law colonial legacy, but this article argues that such narrative does not stand up to the scrutiny of archival study. The English law in Hong Kong history, rather than constituting a lens through which one can witness Hong Kong's quest for modernity, is more akin to a mirror reflecting an ongoing cycle of coercion and resistance through law. Drawing on unexplored archival sources, the article first discusses how the colonial government used libel lawsuits to punish the press for criticism of the government in the 19th century, before turning to describing in detail the daily mandatory vetting of Chinese newspapers by colonial censors under the office of the Secretary for Chinese Affairs and related prosecution cases in the early 20th century. The paper concludes with an exploration of the tension between the notion of a free press and the governance fears of the British Empire in the Far East revealed by this history of silencing the press in Hong Kong. [ABSTRACT FROM PUBLISHER]

This paper reports an empirical study of the use of simulated clients to assess (facilitate the learning of) interviewing skills and communicative competence of law students at the University of Hong Kong (HKU) from February 2013 to April 2014. In this period, about 400 HKU Postgraduate Certificate in Laws students participated in interviewing exercises with simulated clients, who are lay persons trained to portray clients in a realistic manner and to assess communicative competence by standardized rubrics designed in Scotland since 2006. HKU Faculty of Law is the first law school in Asia to adopt this standardized client program to assess law students’ interviewing skills. The paper will present the data analysis of assessment results of the students and their evaluation of this experiential learning program. Our analysis confirms the reliability and validity of using standardized clients as assessors of interviewing skills. It also reveals the necessity of modification of the original design of standardized client program, particularly in relation to the assessment aspect of it, according to specific cultural and commercial needs in an Asian business city like Hong Kong. [ABSTRACT FROM PUBLISHER]

In this paper, we propose and develop an iterative method to calculate a limiting probability distribution vector of a transition probability tensorarising from a higher order Markov chain. In the model, the computation of such limiting probability distribution vectorcan be formulated as a-eigenvalue problemassociated with the eigenvalue 1 ofwhere all the entries ofare required to be non-negative and its summation must be equal to one. This is an analog of the matrix case for a limiting probability vector of a transition probability matrix arising from the first-order Markov chain. We show that ifis a transition probability tensor, then solutions of this-eigenvalue problem exist. Whenis irreducible, all the entries of solutions are positie. With some suitable conditions of, the limiting probability distribution vector is even unique. Under the same uniqueness assumption, the linear convergence of the iterative method can be established. Numerical examples are presented to illustrate the theoretical results of the proposed model and the iterative method. [ABSTRACT FROM AUTHOR]

Hidden Markov models (HMMs) are widely used in bioinformatics, speech recognition and many other areas. This note presents HMMs via the framework of classical Markov chain models. A simple example is given to illustrate the model. An estimation method for the transition probabilities of the hidden states is also discussed. [ABSTRACT FROM AUTHOR]

Categorical data sequences occur in many applications such as forecasting, data mining and bioinformatics. In this note, we present higher-order Markov chain models for modelling categorical data sequences with an efficient algorithm for solving the model parameters. The algorithm can be implemented easily in a Microsoft EXCEL worksheet. We give a detailed description for the implementation which is accessible and useful to anyone who is interested in the applications of higher-order Markov chain models and has some knowledge of EXCEL. [ABSTRACT FROM AUTHOR]

In this paper, we study an eigenvalue problem for even order tensors. Using the matrix unfolding of even order tensors, we can establish the relationship between a tensor eigenvalue problem and a multilevel matrix eigenvalue problem. By considering a higher order singular value decomposition of a tensor, we show that higher order singular values are the square root of the eigenvalues of the product of the tensor and its conjugate transpose. This result is similar to that in matrix case. Also we study an eigenvalue problem for Toeplitz/circulant tensors, and give the lower and upper bounds of eigenvalues of Toeplitz tensors. An application in image restoration is also discussed. [ABSTRACT FROM AUTHOR]

Introduction. To evaluate survival and engraftment of mesenchymal stromal cells (MSCs) in vivo, it is necessary to track implanted cells non-invasively with a method, which does not influence cellular ultrastructure and functional characteristics. Iron-oxide particles have been applied for cell tracking for years, but knowledge regarding possible cytotoxic ultrastructural changes subsequent to iron-oxide particle labeling is limited. Hence, the purpose of this study was to label MSCs with dextran-coated ultrasmall super-paramagnetic iron-oxide (USPIO) particles conjugated with the transduction sequence of trans-activator of transcription (TAT) (IODEX-TAT) and evaluate the effect of labeling on ultrastructure, viability, phenotype and proliferative capacity of the cells. Materials and methods. MSCs were labeled with 5 and 10 µg IODEX-TAT/105 cells for 2, 6 and 21 hours. IODEX-TAT uptake and cellular ultrastructure were determined by electron microscopy. Cell viability was determined by propidium iodide staining and cell proliferation capacity by 5-bromo-2-deoxyuridine (BrdU) incorporation. Maintenance of stem cell surface markers was determined by flow cytometry. Results. IODEX-TAT labeling for 2, 6 and 21 h did not influence cellular ultrastructure or viability. Moreover, neither stem cell surface markers nor cell proliferation capacity was affected by labeling with IODEX-TAT. Conclusion. Our results demonstrate that labeling of MSCs for 21 h with a clinically relevant dose of 10 µg IODEXTAT/105 cells is feasible and does not affect MSC ultrastructure, viability, phenotype or proliferation capacity. [ABSTRACT FROM AUTHOR]

In the present paper, we convert the usual n-step backward recursion that arises in option pricing into a set of independent integral equations by using a z-transform approach. In order to solve these equations, we consider different quadrature procedures that transform the integral equation into a linear system that we solve by iterative algorithms and we study the benefits of suitable preconditioning techniques. We show the relevance of our procedure in pricing options (such as plain vanilla, lookback, single and double barrier options) when the underlying evolves according to an exponential Lévy process. [ABSTRACT FROM AUTHOR]

In this paper, we use credibility theory to estimate credit transition matrices in a multivariate Markov chain model for credit rating. A transition matrix is estimated by a linear combination of the prior estimate of the transition matrix and the empirical transition matrix. These estimates can be easily computed by solving a set of linear programming (LP) problems. The estimation procedure can be implemented easily on Excel spreadsheets without requiring much computational effort and time. The number of parameters is O(s2m2), where s is the dimension of the categorical time series for credit ratings and m is the number of possible credit ratings for a security. Numerical evaluations of credit risk measures based on our model are presented. [ABSTRACT FROM AUTHOR]