Neogene paleoceanography of the eastern equatorial Pacific based on the radiolarian record of IODP drill sites off Costa Rica

The Integrated Ocean Drilling Program (IODP) Expedition 344 drilled cores following a transect across the convergent margin off Costa Rica. Two of the five sites (U1381 and U1414) are the subject of the present study. Major radiolarian faunal breaks and characteristic species groups were defined with the aid of cluster analysis, nodal analysis, and discriminant analysis of principal components. A middle-late Miocene to Pleistocene age (radiolarian zones RN5 to RN16) was determined for the sites, which agrees with the nannofossil zonations and 40Ar/39Ar and tephra layers. Considering the northward movement of the Cocos plate (∼7.3 cm/yr), and a paleolatitude calculator, it is assumed that during the Miocene the two sites were located ∼1000 km to the southwest of their current position, slightly south of the equator. The radiolarian faunas retrieved were thus seemingly formed under the influence of different oceanic currents and sources of nutrients. Changes in the radiolarian assemblages at Site U1414 point at dissimilar environmental settings associated with the colder South Equatorial Current and the warmer Equatorial Countercurrent, as well as to coastal upwelling. These differences are best reflected by changes in the abundance of the morphotype Spongurus spp., with noticeably higher values during the Miocene, than in the Pliocene and the Pleistocene. Because Spongurus spp. is generally associated with cooler waters, these abundance variations (as well as those of several other species) suggest that during the Miocene the area had a stronger influence of colder waters than during younger periods. During the Pliocene and the lowermost Pleistocene, biogenic remains are scarce, presumably due to the terrigenous input, which could have diluted and affected the preservation of pelagic fossils, as well as to the displacement of the site to warmer waters. A typically tropical fauna characterized the Pleistocene, yet with widespread presence of colder water species, most probably indicative of the influence of coastal upwelling processes.Fil: Sandoval, María I.. Universidad de Costa Rica; Costa Rica. Universite de Lausanne; SuizaFil: Boltovskoy, Demetrio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Baxter, Alan T.. University of New England; Australia. McGill University; CanadáFil: Baumgartner, Peter O.. Universite de Lausanne; Suiz

Voters' information behaviour when using political actors' web sites during the 2011 Scottish Parliament election campaign.

Purpose “ The purpose of this paper is to report the results of a study of voters' online behaviour conducted during the 2011 Scottish parliamentary election campaign. Design/methodology/approach “ The study used an interactive, electronically-assisted interview method, where 64 citizens were observed and questioned while they searched for, browsed and used information on the web sites and social media sites of political parties and candidates standing for election to the Scottish Parliament. Findings “ While online campaign sites were generally regarded as serving a useful purpose, as being easy to use and understand, relatively interesting and likely to be visited again, there was very little evidence in this study to indicate that they had any significant impact on voting behaviour during the 2011 Scottish campaign. Rather, the participants' comments suggest that more traditional information sources, particularly print and broadcast media, coupled with long-established campaign techniques, such as leaflet deliveries and door knocking, continue to be more influential in determining Scottish voters' democratic choices. Research limitations/implications “ The paper presents results obtained from a sample of 64 citizens of North-east Scotland. As such, the authors would lay no claims to the results of the study being applicable outwith the Scottish setting. Practical implications “ The findings have implications for those candidates successfully elected to the Scottish Parliament, who may have to significantly modify their information practices on entering parliament. The study also has implications for the broader, international, political and information research communities, as it has added to a rather sparse body of qualitative work on voters' online election information needs. The voter-centred methodological approach used in the study has the potential to be used or adopted more widely, to aid our understanding of the use and impact of online campaign tools. Originality/value “ This study forms part of an ongoing series of investigations by the authors, which has examined the use of the internet by political parties and candidates during parliamentary election campaigns in Scotland. These are the only such studies which have looked specifically at the Scottish political arena. Internationally, most studies of users of online campaign resources have been largely quantitative in nature. The qualitative research discussed in this paper is, therefore, particularly timely and potentially significant

Designing a 3D serious game about career pathways in the games industry

The aim of this paper is to give a detailed overview of the development of a 3D serious game that informs game students about career pathways in the games industry. The paper provides a scoping review on the key principles related to serious game design. These core design issues are reiterated in relation to how the development of the game has adhered to them. The paper illustrates the game’s audit trail in terms of implementation providing a development blueprint for other educators to follow when developing an educational game. The learning outcomes of the game are also accentuated and how the implementation of the game has catered for them. An important aspect of the paper is to highlight how the underlying aspects of game design can accommodate intrinsic content and motivation whilst accommodating the various pedagogical frameworks embedded in the gameplay. The characterising goals of the game have adopted a linear and cyclical approach that allows the player to progress through the gameplay completing formative and summative assessment challenges. The serious game was developed using the Unity game engine adopting a hub and spoke design. A key challenge when designing the game was how to ensure that the game remained endogenous when designing the game’s levels. The design considerations presented in this paper provide a solid implementational framework about how to implement principles of learning and assessment associated with employability skill sets with a specific focus to the games industry

Vowels in Malacca Portuguese Creole

This paper examines the vowel system of present day Malacca Portuguese Creole (MPC) or Kristang, based on recordings from interviews with five female native speakers of MPC. A total of 1083 monophthongs were extracted from the recordings. The first and second formants of these vowels were measured and analysed. Considerable variation was found within and between the speakers in the way each of the vowels was produced. There were also noticeable overlaps between /i/ and /e/ suggesting that they were being used interchangeably. The quality of some of the vowels found in this study was also found to be different from those previously described. Based on the reduced vowel inventory, the variation in the way that vowels are produced, and the overlaps between vowels, the findings suggest the possibility of phonological instability of this endangered language

Towards a practical framework for managing the risks of selecting technology to support independent living

Information and communication technology applications can help increase the independence and quality of life of older people, or people with disabilities who live in their own homes. A risk management framework is proposed to assist in selecting applications that match the needs and wishes of particular individuals. Risk comprises two components: the likelihood of the occurrence of harm and the consequences of that harm. In the home, the social and psychological harms are as important as the physical ones. The importance of the harm (e.g., injury) is conditioned by its consequences (e.g., distress, costly medical treatment). We identify six generic types of harm (including dependency, loneliness, fear and debt) and four generic consequences (including distress and loss of confidence in ability to live independently). The resultant client-centred framework offers a systematic basis for selecting and evaluating technology for independent living