Based on a critical review of the Unified Theory of Acceptance and Use of Technology (UTAUT), this study first formalized an alternative theoretical model for explaining the acceptance and use of information system (IS) and information technology (IT) innovations. The revised theoretical model was then empirically examined using a combination of meta-analysis and structural equation modelling (MASEM) techniques. The meta-analysis was based on 1600 observations on 21 relationships coded from 162 prior studies on IS/ IT acceptance and use. The SEM analysis showed that attitude: was central to behavioural intentions and usage behaviours, partially mediated the effects of exogenous constructs on behavioural intentions, and had a direct influence on usage behaviours. A number of implications for theory and practice are derived based on the findings.

Highlights  Nine adoption models are reviewed  29 different adoption constructs are identified  The UMEGA outperforms all other models for e-government  Government context should be taken into account  The UMEGA is simpler to use and has a better explanatory power than the UTAUT

Sluggish adoption of emerging electronic government (eGov) applications continues to be a problem across developed and developing countries. This research tested the nine alternative theoretical models of technology adoption in the context of an eGov system using data collected from citizens of four selected districts in the state of Bihar in India. Analysis of the models indicates that their performance is not up to the expected level in terms of path coefficients, variance in behavioural intention, or the fit indices of the models. In response to the underperformance of the alternative theoretical models to explain the adoption of an eGov system, this research develops a unified model of electronic government adoption and tests it using the same data. The results indicate that the proposed research model outperforms all alternative models of technology adoption by explaining 77 % of variance in behavioural intention, with acceptable values of fit indices and significant relationships between each pair of hypothesised factors.

In conclusion, the treatment modality described may be a new approach to the treatment of wrinkles.

No abstract

Phototherapy has become a treatment of choice in many areas of medicine. Light can be used to deliver energy to tissue selectively targeting specific structures in order to induce the desired therapeutic outcome. The choice of optical parameters for a specific application is not simple. Wavelength, energy, exposure time and fluence can be varied and induce a wide range of tissue effects. The treatment of the skin with light is probably the one phototherapy application that is most developed in terms of technology and market maturity. White light systems are extensively used to address a range of skin conditions. However, different conditions have different physiology and hence require differing optical parameters. The technology standard is based upon systems, which have a number of different optical filters allowing the output to be tailored to the specific application. This paper discusses the advantages of a different type of system, namely the iPulse i300 (Cyden Ltd, Swansea, UK), which uses a single dichroic reflectance filter and whose optical output is changed by varying other parameters in a carefully controlled manner.

background. Selective nonablative wrinkle reduction with low-fluence pulsed dye laser has been shown to provide cosmetic benefits by stimulating the production of dermal collagen. The clinical efficacy for improving the appearance of acne scarring using selective nonablative laser treatments has yet to be established. objective. To evaluate the improvement in the appearance and topography of acne scarring following application of a 585 nm pulsed dye laser with a temporal profile and pulse duration designed specifically to target healthy microvasculature in the dermis. methods. Ten patients (mean age 34.8 years) with Fitzpatrick skin types I-IV and shallow to moderately deep, saucerized facial acne scars were enrolled in a prospective trial to receive a single laser treatment of both cheeks. Patients were evaluated at 30, 60, 90, and 120 days to assess the degree of clinical improvement. The evaluation process included assessment of preand posttreatment photography by two independent observers, patient assessment surveys, and surface profilometry using silicone imprints in order to quantify the degree of clinical improvement. results. All 10 patients reported visible cosmetic improvement in the treated areas while surface profilometry showed that, on average, the depth of the acne scars was reduced by 47.8%. No adverse effects of this treatment were reported. conclusion. The treatment of acne scars utilizing a 585 nm pulsed dye laser with a temporal profile and pulse duration designed specifically to target healthy microvasculature in the dermis may be a safe and effective noninvasive alternative for a natural result.

The treatment of acne scars utilizing a 585 nm pulsed dye laser with a temporal profile and pulse duration designed specifically to target healthy microvasculature in the dermis may be a safe and effective noninvasive alternative for a natural result.