Formation and Aging Precipitates. Study on Nucleation of Strontium Sulfate from Solution

The rate of precipitation of strontium sulfate from aqueous solutions was traced simultaneously by measurement of relative intensity of light scattering as well as by direct observation of particles by means of electron microscopy. Mechanisms for ionic crystal growth from solution were discussed and compared with experimental resulting precipitation rates. When the precipitate is formed by direct mixing of ions the nucleation occurs very rapidly. After the induction period the particles grow continuously, but a distinct crystal structure began to appear in particles whose length was bigger than 0.02 μm

A Demand-based e-government Adoption Model (DeAM)

This paper proposes a new conceptual model that explains factors that influence the uptake of e-government services in a developing country context. The development of the conceptual model was guided by qualitative data collected from a range of egovernment potential adopters using semi-structured interviews informed by prior e-government literature. The paper starts by describing the research methods used, followed by a description of the environment in which the interviews took place and the analytical method used. Then, a detailed description of the domain analysis technique used to analyze the qualitative data is provided. This is followed by presenting the findings of the study and highlighting the main domains that emerged from the data which led to the development of the conceptual Demand-based egovernment Adoption Model (DeAM)

Designing Proactive Business Event Services

Part 2: Digital TransformationsInternational audienceIn the last decade, effectiveness, efficiency and quality have been main objectives in the transformation of government services. Citizen orientation can be seen as the crucial driver behind these objectives. A contemporary theme in all of this is about proactive services. Proactive services switch the service delivery from reactive to proactive, thereby, promising a yet unforeseen level of quality. In this paper, we ask how to successfully design proactive business event services in the Estonian company registration portal. We investigate current problems of this e-service as encountered by Estonian entrepreneurs. We conduct qualitative interviews with experts from the government and micro-business owners that use the registration portal. Based on the findings, we give a set of recommendations for designing proactive business event services in the public sector