A statistical multiresolution approach for face recognition using structural hidden Markov models

This paper introduces a novel methodology that combines the multiresolution feature of the discrete wavelet transform (DWT) with the local interactions of the facial structures expressed through the structural hidden Markov model (SHMM). A range of wavelet filters such as Haar, biorthogonal 9/7, and Coiflet, as well as Gabor, have been implemented in order to search for the best performance. SHMMs perform a thorough probabilistic analysis of any sequential pattern by revealing both its inner and outer structures simultaneously. Unlike traditional HMMs, the SHMMs do not perform the state conditional independence of the visible observation sequence assumption. This is achieved via the concept of local structures introduced by the SHMMs. Therefore, the long-range dependency problem inherent to traditional HMMs has been drastically reduced. SHMMs have not previously been applied to the problem of face identification. The results reported in this application have shown that SHMM outperforms the traditional hidden Markov model with a 73% increase in accuracy

The importance of trust in relationship marketing and the impact of self services technologies

Technology has dramatically altered the way businesses operate in a Business-to-Business (B2B) context and has had profound influences on services, altering the way services are delivered (Bitner, Ostrom & Meuter, 2002). The increased use of self-service technologies (SSTs) could have a great impact on B2B relationships, yet there is little understanding of this in the literature. In the 1980s and 90s, a shift in marketing focus has seen an increased emphasis on Relationship Marketing (Morgan and Hunt, 1994). This conceptual paper seeks to explain relationship marketing, and the importance of building trust in order to develop a relationship marketing approach. Many authors stress the importance of trust in relationships, however, does not consider the impact of self service technologies on relationships. Further research is needed to understand the impact of SSTs on relationship marketing

A Qualitative Understanding of the Impact of Internet Banking in Relationships Between Banks and Commercial Customers

The importance of developing and fostering relationships with customers has long been regarded as important within services marketing (Berry, 1983) and also within B2B relationships (Ford, 1990). In the 1980s and 90s, a shift in marketing focus has seen an increased emphasis on Relationship Marketing (Morgan and Hunt, 1994). This paper reviews the results and implications of recent exploratory research conducted with a small sample of Australian business bank customers. Despite it being expected that the perception of technology would impact on the relationship, it was actually clear through the interviews that it was the perception of the relationship, which led respondents to develop a perception of the technology. An exploratory study, further research ideas are provided at the conclusion of this paper

Using a Software Product Line Approach in Designing Grid Services

Software Product Line engineering (SPL) has emerged in recent years as a planned approach for software reuse within families of related software products. In SPL, variability and commonality among different members of a family is studied and core assists (system architecture, software components, documentation, etc.) are designed accordingly to maximize reuse within the family members. In this work, we look at how this emerging technology can be relevant to the domain of grid computing and the design of grid services. The GeneGrid project is used to demonstrate the SPL approach

Using cm observations to constrain the abundance of very small dust grains in Galactic cold cores

In this analysis, we illustrate how the relatively new emission mechanism, known as spinning dust, can be used to characterize dust grains in the interstellar medium. We demonstrate this by using spinning dust emission observations to constrain the abundance of very small dust grains (a ≲ 10 nm) in a sample of Galactic cold cores. Using the physical properties of the cores in our sample as inputs to a spinning dust model, we predict the expected level of emission at a wavelength of 1 cm for four different very small dust grain abundances, which we constrain by comparing to 1 cm CARMA observations. For all of our cores, we find a depletion of very small grains, which we suggest is due to the process of grain growth. This work represents the first time that spinning dust emission has been used to constrain the physical properties of interstellar dust grains

Using Spinning Dust Emission To Constrain The Abundance Of Very Small Dust Grains In Dense Cores

We present the first analysis of using spinning dust emission as a method to characterise the properties of very small interstellar dust grains in dense cores

A detailed radio study of the energetic, nearby, and puzzling GRB 171010A

We present the results of an intensive multi-epoch radio frequency campaign on the energetic and nearby GRB 171010A with the Karl G. Janksy Very Large Array and Arcminute Microkelvin Imager Large Array. We began observing GRB 171010A a day after its initial detection, and were able to monitor the temporal and spectral evolution of the source over the following weeks. The spectra and their evolution are compared to the canonical theories for broadband GRB afterglows, with which we find a general agreement. There are, however, a number of features that are challenging to explain with a simple forward shock model, and we discuss possible reasons for these discrepancies. This includes the consideration of the existence of a reverse shock component, potential microphysical parameter evolution and the effect of scintillation

Rapid radio flaring during an anomalous outburst of SS Cyg

The connection between accretion and jet production in accreting white dwarf binary systems, especially dwarf novae, is not well understood. Radio wavelengths provide key insights into the mechanisms responsible for accelerating electrons, including jets and outflows. Here, we present densely sampled radio coverage, obtained with the Arcminute MicroKelvin Imager Large Array, of the dwarf nova SS Cyg during its 2016 February anomalous outburst. The outburst displayed a slower rise (3 dmag-1) in the optical than typical ones and lasted for more than three weeks. Rapid radio flaring on time-scales <1 h was seen throughout the outburst. The most intriguing behaviour in the radio was towards the end of the outburst where a fast, luminous ('giant'), flare peaking at ~20 mJy and lasting for 15 min was observed. This is the first time that such a flare has been observed in SS Cyg and insufficient coverage could explain its non-detection in previous outbursts. These data, together with past radio observations, are consistent with synchrotron emission from plasma ejection events as being the origin of the radio flares. However, the production of the giant flare during the declining accretion rate phase remains unexplained within the standard accretion-jet framework and appears to be markedly different to similar patterns of behaviour in X-ray binaries