The multiple sequence sets: problem and heuristic algorithms

“Sequence set” is a mathematical model used in many applications such as biological sequences analysis and text processing. However, “single” sequence set model is not appropriate for the rapidly increasing problem size. For example, very large genome sequences should be separated and processed chunk by chunk. For these applications, the underlying mathematical model is “Multiple Sequence Sets” (MSS). To process multiple sequence sets, sequences are distributed to different sets and then sequences on each set are processed in parallel. Deriving effective algorithm for MSS processing is challenging.     

The influence of ideational contests of social policy on government welfare efforts

There has been limited empirical research on the interaction between media influence and governments' decision-making in the social policy field. Drawing on a wider study of the ideation of poverty in South Korea, this research tests if policy ideas represented in the media have bottom-up framing effects on policymaking and can be a reliable indicator of the government's social policy efforts. This study analysed the editorials of major Korean daily newspapers, over the period of a decade from 2000 to 2009. The analysis outcomes identified a significant correlation between the extent of poverty discussions in the media and government welfare spending.     

Relative Effects of Daily Feedback and Weekly Feedback on Customer Service Behavior at a Gas Station

The relative effects of daily and weekly feedback on customer service behavior at a gas station were assessed using an ABC within-subjects design. Four critical service behaviors were identified and measured daily. After baseline (A), weekly feedback (B) was introduced, and daily feedback (C) was introduced in the next phase. The results indicated that the service behaviors improved when the weekly feedback was introduced and improved further when the daily feedback was introduced.     

多元线性模型共同均值矩阵参数的线性估计的可容许性特征

讨论了一般多元线性模型共同均值矩阵参数的线性组合函数SXO的线性估计在一切估计类中的A－可容许性问题,并得到了它的充要条件。     

Bayesian analysis of nonlinear and non-Gaussian state space models via multiple-try sampling methods

We develop in this paper three multiple-try blocking schemes for Bayesian analysis of nonlinear and non-Gaussian state space models. To reduce the correlations between successive iterates and to avoid getting trapped in a local maximum, we construct Markov chains by drawing state variables in blocks with multiple trial points. The first and second methods adopt autoregressive and independent kernels to produce the trial points, while the third method uses samples along suitable directions. Using the time series structure of the state space models, the three sampling schemes can be implemented efficiently. In our multimodal examples, the three multiple-try samplers are able to generate the desired posterior sample, whereas existing methods fail to do so.     

论现代企业制度的基础

产权约束是现代企业制度的基础；“授权经营”是一种新的“委托－代理”制，具有制度创新性质；只有规范产权结构和开放产权市场才能形成产权约束机制。     

Opportunistic data structures for range queries

In this paper, we study the problem of supporting range sum queries on a compressed sequence of values. For a sequence of n k-bit integers, k ≤ O(log n), our data structures require asymptotically the same amount of storage as the compressed sequence if compressed using the Lempel-Ziv algorithm. The basic structure supports range sum queries in O(log n) time. With an increase by a constant factor in the storage complexity, the query time can be improved to O(log log n + k). The work described in this paper is fully supported by a grant from the Research Grant Council of the Hong Kong Special Administrative Region, China (CityU 1071/02E). A preliminary version has appeared in 11th International Conference in Computing and Combinatorics (COCOON'05).     

Statistical Inference of Type-II Progressively Hybrid Censored Data with Weibull Lifetimes

In this article, we discuss the maximum likelihood estimators and approximate maximum likelihood estimators of the parameters of the Weibull distribution with two different progressively hybrid censoring schemes. We also present the associated expressions of the expected total test time and the expected effective sample size which will be useful for experimental planning purpose. Finally, the efficiency of the point estimation of the parameters based on the two progressive hybrid censoring schemes are compared and the merits of each censoring scheme are discussed.     

‘Fighting a war alone’: reintegration of ex-offenders from ethnic minority groups

Reintegration into society is crucial for the rehabilitation of ex-offenders. However, in Hong Kong, ex-offenders from ethnic minority groups often face specific difficulties in reintegrating into society when they have completed their sentence and have been released from prisons and correctional institutions. Due to language barriers and cultural differences, as well as a sense of inferiority originating from their convictions, many ethnic minority ex-offenders are likely to experience difficulty in accessing support networks that can help in their rehabilitation, and to re-establish and sustain an identity as a law-abiding citizen, and face more barriers to reintegration than their Chinese counterparts. These barriers are further compounded by problems reintegrating into their own ethnic communities. Many ethnic minority ex-offenders have experienced isolation, stigmatization and discrimination following rejection from their own communities. This, in turn, further complicates their reintegration and can contribute to recidivism and an increase in the crime rate over time.

This paper seeks to analyse the reintegration of ethnic minority ex-offenders into their own ethnic communities using the story of a single ethnic minority ex-prisoner to learn about the lived experience of being jailed and stigmatized. This was carried out to understand the difficulties encountered during reintegration into society, and to look at ways to remove any ‘labels’ bestowed upon ex-offenders following imprisonment.

Finally, the main outcomes of this study are to identify facilitative factors for ethnic minority ex-offenders to aid their re-establishment and reintegration into society and consider possible implications for rehabilitative programmes for ethnic minority ex-offenders and crime prevention programmes for the community.