Methodological Issues in a Real-Time Study of Glaswegian Vowels: Automation and Comparability

No abstract available

Energy Prices and Alberta Government Revenue Volatility

Alberta government needs a revamped resource revenue stabilization fund to overcome the effects of wild swings in resource revenue and spending.Energy prices change substantially and unpredictably, causing revenue planning trouble for the Alberta government. Adjusting to these movements typically involves economic, social, and political costs that need to be factored into the government’s fiscal outlook. The best option for handling this is a resource revenue stabilization fund that collects a fixed proportion of resource revenue each year, and funds the provincial budget each year with a fixed share of the fund’s assets.Fiscal and Tax Competitiveness, Alberta, revenue volatility, resource revenue stabilization fund

Government Revenue Volatility in Alberta

The Alberta government is heavily exposed to energy price volatility as it relies to a great extent on revenue derived from the production of oil and natural gas. Energy prices change substantially and unpredictably, causing large and uncertain movements in revenues. Adjusting to these movements typically involves economic, social and political costs. Alberta government revenues are considerably more volatile than the revenues of other provinces, but Alberta’s own-source revenues less royalty payments are of similar size and volatility as those of other provinces. Several methods to reduce the volatility of revenues are assessed. An often-suggested method, tax base diversification (for example, use of a retail sales tax), is shown to have a minor effect on overall revenue volatility since Alberta’s royalty revenues are such a large share of total own-source revenues. Revenue smoothing using futures and options markets can be expensive, is associated with significant political risks, and cannot eliminate all revenue volatility. The Canadian dollar tends to appreciate (depreciate) when energy prices rise (fall), so exchange rate movements have smoothed Alberta government revenues, although not by a large amount. A simulation using Alberta data shows that a revenue savings fund could significantly reduce revenue volatility. This type of fund leads to greater revenue stability because the revenue it contributes to the budget in any particular year is based on revenues averaged over prior years. Revenue uncertainty is also reduced with a savings fund since future revenue depends on known past contributions.government revenue volatility; energy prices; tax base diversification; government savings fund

Investment and the exchange rate: Short run and long run aggregate and sector-level estimates

Aggregate and sector-level investment equations that incorporate the exchange rate are estimated for a panel of 17 OECD countries using an error correction methodology. A real currency depreciation is found to have a significant negative effect on aggregate investment in both the short run and the long run. This effect is negative in all sectors in the short run, is significant in six of nine sectors, and is particularly persistent in service sectors, sectors that do not generally benefit directly from an expansion of demand following a currency depreciation. Movements in another explanatory variable, the real wage, have an insignificant impact on investment in the short run in most sectors, but a rise in the real wage has a significant negative long run effect on aggregate investment and on investment in six of nine sectors. A simulation shows that movements in the real exchange rate and the real wage can explain a large proportion of cross-country differences in investment.investment; exchange rate

Utilising Hidden Markov Modelling for the Assessment of Accommodation in Conversational Speech

The work presented here suggests a method for assessing speech accommodation in a holistic acoustic manner by utilising Hidden Markov Models (HMMs). The rationale for implementation of this method is presented along with an explanation of how HMMs work. Here, a heavily simplified HMM is used (single state; mixture of gaussians) in order to assess the applicability of more sophisticated HMMs. Results are presented from a small-scale study of six pairs of female Scottish-English speakers, showing measurement of significant trends and changes in holistic acoustic features of speakers during conversational interaction. Our findings suggest that methods integrating HMMs with current holistic acoustic measures of speech may be a useful tool in accounting for acoustic change due to speaker interaction

Groupoid normalisers of tensor products: infinite von Neumann algebras

The groupoid normalisers of a unital inclusion $B\subseteq M$ of von Neumann algebras consist of the set $\mathcal{GN}_M(B)$ of partial isometries $v\in M$ with $vBv^*\subseteq B$ and $v^*Bv\subseteq B$. Given two unital inclusions $B_i\subseteq M_i$ of von Neumann algebras, we examine groupoid normalisers for the tensor product inclusion $B_1\ \overline{\otimes}\ B_2\subseteq M_1\ \overline{\otimes}\ M_2$establishing the formula$$ \mathcal{GN}_{M_1\,\overline{\otimes}\,M_2}(B_1\ \overline{\otimes}\ B_2)''=\mathcal{GN}_{M_1}(B_1)''\ \overline{\otimes}\ \mathcal{GN}_{M_2}(B_2)'' $$ when one inclusion has a discrete relative commutant $B_1'\cap M_1$ equal to the centre of $B_1$ (no assumption is made on the second inclusion). This result also holds when one inclusion is a generator masa in a free group factor. We also examine when a unitary $u\in M_1\ \overline{\otimes}\ M_2$ normalising a tensor product $B_1\ \overline{\otimes}\ B_2$ of irreducible subfactors factorises as $w(v_1\otimes v_2)$ (for some unitary $w\in B_1\ \overline{\otimes}\ B_2$and normalisers$v_i\in\mathcal{N}_{M_i}(B_i)$). We obtain a positive result when one of the$M_i$is finite or both of the$B_i$are infinite. For the remaining case, we characterise the II$_1$factors$B_1$for which such factorisations always occur (for all$M_1, B_2$and$M_2$) as those with a trivial fundamental group.Comment: 22 page

The Role of Tapping in Improving Connected Speech Comprehension of a Non-Native Variety of English

No abstract available

Root traits predict decomposition across a landscape-scale grazing experiment

Acknowledgements We are grateful to the Woodland Trust for maintenance of and access to the Glen Finglas experiment. We thank Debbie Fielding, William Smith, Sarah McCormack, Allan Sim, Marcel Junker and Elaine Runge for help in the field and the laboratory. This research was part of the Glen Finglas project (formerly Grazing and Upland Birds (GRUB)) funded by the Scottish Government (RERAS). S.W.S. was funded by a BBSRC studentship.Peer reviewedPublisher PD