Does democracy facilitate economic growth or does economic growth facilitate democracy? an empirical study of Sub-Saharan Africa

This paper examines the relationship between democracy and economic growth in 30 Sub-Saharan African countries. As our proxy for democracy we first use the democracy index constructed by Freedom House and then check the sensitivity of our findings using, as an alternative proxy for democracy, the Legislative Index of Electoral Competitiveness (LIEC). We find support for the Lipset hypothesis - in the long run, real GDP Granger causes democracy and an increase in GDP results in an improvement in democracy ??? in Botswana and Niger with both datasets, for Chad with the Freedom House data only and for Cote d???Ivoire and Gabon with the LIEC data only. Support for the compatibility hypothesis - in the long run democracy Granger causes real income and an increase in democracy has a positive effect on real income - is found for Botswana with the Freedom House data and for Madagascar, Rwanda, South Africa and Swaziland with the LIEC data. Support for the conflict hypothesis - in the long run democracy Granger causes real income and an increase in democracy has a negative effect on real income - is found for Gabon with the Freedom House data and Sierra Leone with the LIEC data.

Effect of erectile dysfunction medications on coexsisting dysfunctions in couples : Partner's Preference Study

There is sparse information on how treatments for erectile dysfunction (ED) affects couples. This study investigated the effects of ED treatments on 100 heterosexual couples' sexual functioning and whether function achieved using a short-acting versus a long-acting ED medication differed significantly. Couples were randomized to use tadalafil or sildenafil for each of two 12-week study phases; they completed questionnaires (International Index of Sexual Function and Female Sexual Function Index) and kept sexual event diaries. All participants experienced significant improvements over baseline sexual functioning, while the men used short- or long-acting ED medications with no significant differences related to the duration of drug action recorded for either the men or women. Despite this lack of difference in efficacy there was a strong preference by women (79%) and their partners (16%) for the longer-acting medication. The reasons for this warrant further investigation. Understanding the effects on couples of the use of ED medications is a necessary aspect of ensuring ongoing sexual satisfaction in couples treated for ED.

Assessing sustainability : a technical fix or a means of social learning?

The contextual nature of sustainability makes it extremely difficult to measure. Across the world each region has a specific environment and history that has shaped values and perceptions of the local community. In response, a wide range of tools has been developed that employ differing techniques to measure sustainability. These have a range of applications from global to site-specific scales. However, it is yet to be resolved whether assessments made using these tools reflect a technical focus with no close links to the knowledge and perceptions of stakeholders, community and management decisions, or whether the assessments reflect the knowledge and perceptions of local stakeholders and the community. In the southwest region of Victoria, Australia, a sustainability index called AIRS (An Index of Regional Sustainability) has recently been developed. This tool is based on indicators selected by stakeholders and considers relationships between the indicators. The aim of this paper is to report an ex-post evaluation of the AIRS sustainability assessment conducted at a subcatchment scale. The evaluation assesses AIRS's ability to assess regional sustainability and compares and contrasts the subcatchment assessments with the knowledge and perceptions of stakeholders and the community. A participatory approach that acknowledges key stakeholders was used for the evaluation process. Representatives from four stakeholder groups were interviewed to elicit their views of the AIRS assessment, its relevance, quality, applicability and priorities for future development. Strengths and weaknesses of AIRS are revealed and its contribution to social learning is highlighted.

Computing the numerical scale of the linguistic term set for the 2-tuple fuzzy linguistic representation model

When using linguistic approaches to solve decision problems, we need the techniques for computing with words (CW). Together with the 2-tuple fuzzy linguistic representation models (i.e., the Herrera and Mart´ınez model and the Wang and Hao model), some computational techniques for CW are also developed. In this paper, we define the concept of numerical scale and extend the 2-tuple fuzzy linguistic representation models under the numerical scale.We find that the key of computational techniques
based on linguistic 2-tuples is to set suitable numerical scale with
the purpose of making transformations between linguistic 2-tuples
and numerical values. By defining the concept of the transitive
calibration matrix and its consistent index, this paper develops an optimization model to compute the numerical scale of the linguistic term set. The desired properties of the optimization model are also presented. Furthermore, we discuss how to construct the transitive calibration matrix for decision problems using linguistic preference relations and analyze the linkage between the consistent index of the transitive calibration matrix and one of the linguistic preference relations. The results in this paper are pretty helpful to complete the fuzzy 2-tuple representation models for CW.

Palaeobiogeography and palaeogeographical implications of Permian marine bivalve faunas in Northeast Asia (Kolyma–Omolon and erkhoyansk–Okhotsk regions, northeastern Russia)

The paper considers the biogeography and palaeogeographic implications of the Permian marine bivalve faunas of Northeast Asia, with a focus on the dynamic relationships between biotic similarities and palaeogeographic distance through an interval of ca. 50 million years. A stage-by-stage time series analysis of the biotic similarities between two previously recognized biochores in Northeast Asia, the Kolyma–Omolon and Verkhoyan–Okhotsk provinces, has been carried out using both the Jaccard and Dice similarity indices based on the spatio-temporal distributions of 355 Permian marine bivalve species in Northeast Asia. The outcome of this analysis, combined with other empirical data and previously published tectonic, sedimentological and palaeontological information, suggests that (1) the bivalve faunas from these two provinces were distinctive from one another as two separate biochores throughout all but the earliest (Asselian) Permian stages and (2) the biotic similarities between the Verkhoyan–Okhotsk and Kolyma–Omolon provinces remained consistently low since Sakmarian, all falling well below the minimum threshold of the Jaccard index of 0.42 required for distinguishing marine biotic provinces. We interpret these below-threshold Jaccard biotic similarities as an indication of significant palaeogeographic separation between the Verkhoyan-Okhotsk and Kolyma–Omolon provinces, which is in turn considered to indicate rifting and seafloor spreading of the Omolon microcontinent and associated terranes and island arcs away from the North Asian craton, at least from the Sakmarian to the beginning of the Late Permian.
Palaeo-distance separation appears to be the primary and most significant biogeographic determinant in accounting for the differences in the spatial distribution of most Permian bivalve species in Northeast Asia. Several other variables also appear to have played a significant role, including regional climate conditions, ocean currents and merged island chains as geographic barriers. In particular, the relatively high biotic similarity between the Verkhoyan–Okhotsk and Kolyma–Omolon provinces during the Late Wuchiapingian and Changhsingian may have been related to the shallowing of the deep-water basins (Oimyakon, Ayan-Yuryakh, Balygychan and Sugoi basins) that had previously separated the two provinces and the flooding (submergence) of the Okhotsk–Taigonos volcanic arc system, thus allowing the invasion of lower latitude warm-water Palaeotethyan and even Gondwanan species into Northeast Asia.