Australian telephone network subscription and calling demands: evidence from a stated-preference experiment

This paper examines the impact of the subscription-calling rate structure on the demand for residential telephone network subscription and calling. Stated-preference experimental data are used to estimate demand equations. The results indicate that household network subscription and calling demands for the Sydney Metropolitan Area are affected by both rate structure and household socio-demographic variables.Telecommunications demand; Subscription-calling rate structure; Stated-preference experimental analysis; Survey

Investigation of impregnation methods in amine modification of mesoporous solids

non-peer-reviewedCarbon dioxide is one of a number of gases known as green-house gases which is thought to contribute to global climate change. CO2 released from fossil-fuel fired electric power generation plants is believed to be one of the main contributors to these emissions. A potential way to deal with these CO2 emissions is carbon dioxide capture and storage. This research investigates the application of amine-modified mesoporous silica as CO2 adsorbents. Various amine modification methods were chosen in this study, and these results will be presented

Water exchange at a hydrated platinum electrode is rare and collective

We use molecular dynamics simulations to study the exchange kinetics of water molecules at a model metal electrode surface -- exchange between water molecules in the bulk liquid and water molecules bound to the metal. This process is a rare event, with a mean residence time of a bound water of about 40 ns for the model we consider. With analysis borrowed from the techniques of rare-event sampling, we show how this exchange or desorption is controlled by (1) reorganization of the hydrogen bond network within the adlayer of bound water molecules, and by (2) interfacial density fluctuations of the bulk liquid adjacent to the adlayer. We define collective coordinates that describe the desorption mechanism. Spatial and temporal correlations associated with a single event extend over nanometers and tens of picoseconds.Comment: 10 pages, 9 figure

Shaping the Future of Fuel: Monolithic Metal-Organic Frameworks for High-Density Gas Storage.

The environmental benefits of cleaner, gaseous fuels such as natural gas and hydrogen are widely reported. Yet, practical usage of these fuels is inhibited by current gas storage technology. Here, we discuss the wide-ranging potential of gas-fuels to revolutionize the energy sector and introduce the limitations of current storage technology that prevent this transition from taking place. The practical capabilities of adsorptive gas storage using porous, crystalline metal-organic frameworks (MOFs) are examined with regard to recent benchmark results and ultimate storage targets in this field. In particular, the industrial limitations of typically powdered MOFs are discussed while recent breakthroughs in MOF processing are highlighted. We offer our perspective on the future of practical, rather than purely academic, MOF developments in the increasingly critical field of environmental fuel storage

Prerequisites in behavioral science and business: opportunities for dental education.

There is increasing pressure on recent dental school graduates to understand and successfully utilize patient management and business management strategies to run a productive dental office. Dental schools are faced with the dilemma to either add more credit hours in their already crowded curriculum or adjust predental school requirements. All fifty-nine U.S. dental schools were assessed online to determine admission requirements in the areas of behavioral science and business education. Results show that only 11.9 percent of the schools require prerequisite course work in behavioral science and no school requires prerequisite course work in business. However, 64.4 percent and 30.5 percent of schools encouraged or recommended prerequisite course work in behavioral science and business, respectively. We suggest that the dental education community involve key stakeholders to discuss the incorporation of prerequisite course work in behavioral science and business. Additional courses in these disciplines would provide dental students better backgrounds from which the dental curriculum could build a more advanced and applied perspective to better prepare students for practice

Australian telephone network subscription and calling demands: evidence from a stated-preference experiment

This paper examines the impact of the subscription-calling rate structure on the demand for residential telephone network subscription and calling. Stated-preference experimental data are used to estimate demand equations. The results indicate that household network subscription and calling demands for the Sydney Metropolitan Area are affected by both rate structure and household socio-demographic variables

Australian telephone network subscription and calling demands: evidence from a stated-preference experiment

This paper examines the impact of the subscription-calling rate structure on the demand for residential telephone network subscription and calling. Stated-preference experimental data are used to estimate demand equations. The results indicate that household network subscription and calling demands for the Sydney Metropolitan Area are affected by both rate structure and household socio-demographic variables