The requirements on a neutral current additive tc the heavy water in the SNO project are as follows: water solubility, low inherent radioactivity or the availability of an easy path of purification from thorium and radium, the possibility for easy separation from the water phase and safety. The solution of such an additive is expected to be transparent in the visible range, stable for extended ...

Water injection and Enhanced Geothermal System (EGS) technologies have been used to exploit heat resources from geothermal reservoirs. Detecting spatial temporal changes in reservoir physical properties is important for monitoring condition due water EGS. Here, we determine high-resolution models of the three-dimensional P wave velocity attenuation (Vp Qp) structures between years 2005 2011 nor...

A new parameter extraction methodology local ratio evaluation is presented which is well suited for converting one model to another. An example is given for VBIC model extraction by going through Spice Gummel-Poon (SGP) model. It is based on the fact that the VBIC model is a direct enhancement and extension of SGP model. Firstly, the standard SGP model is extracted in the standard way. Then, SG...

It is often problematic for employees in large companies to keep up to date with what is going on within the organisation. Lately, corporate intranets has been introduced as a channel for organisational communication. An intranet enables easy access to, e.g., ongoing project information, technical documentation, organisational newsletters and policies. However, even with an intranet it is still...

Human activities, such as fluid injection as part of the stimulation of an enhanced geothermal system (EGS) for heat and power production, can cause damaging earthquake ground motions. A difficulty in quickly settling or rejecting insurance claims to the policy of the operator of the EGS is the lack of ground truth on the observed shaking at sites of reported damage. To overcome this problem a ...

Gamification is the concept of applying game elements in non-game context platforms to motivate people to participate in planned activities to achieve goals. Gamification has been applied to academic fields including software engineering (SE) in recent years. Many gamification implementations in SE have been ad hoc and lacked standardized guidelines. This paper introduces a new concept of build...

Research into the sustainability of geothermal energy previously focused on the management and use of the resource (Rybach and Mongillo, 2006) and the environmental impacts during geothermal energy production (Bloomfield et al., 2003; Reed and Renner, 1995). Within these constraints, studies have shown that there will be less impact on air emissions (including greenhouse gases), water consumpti...

The braid group Bn is the mapping class group of an n-punctured disk. An n-braid is reducible if it has an invariant essential curve system in the punctured disk. We show that for some class of reducible braids (including split braids), finding a reduction system is as easy as finding one element in the ultra summit set.

At any stage in a well-run conversation, a certain amount is presupposed. The parties to the conversation take it for granted; or at least they purport to, whether sincerely or just “for the sake of the argument”. Presuppositions can be created or destroyed in the course of a conversation. This change is rule-governed, at least up to a point. The presuppositions at time r’ depend, in a way abou...