Casgliad o glipiau fideo i helpu myfyrwyr i weithio'n effeithiol ac i gyflwyno gwaith ysgrifenedig da.

The Sun’s complex magnetic field permeates through the photosphere (the Sun’s surface) and into the corona (the Sun’s atmosphere). New magnetic fluxes arise from the photosphere in the form of closed loops which expand into the corona. This is a typical process of coronal active regions which creates and replenishes the coronal field. Magnetic field and plasma (energetic ionised gas) are transported through the corona and flow with the solar wind into the heliosphere (the region of space influenced by the Sun including the solar system). Transportation of this kind is seen during explosive events from the Sun. According to current thinking, the only transport of material from the closed field of active regions is through eruptive events, so in the absence of eruptions the active region plasma is isolated from the solar wind. This article presents evidence to the contrary. The observations show the first evidence of the direct, quiescent expansion of active region closed field into the extended corona without an eruption, thus forming an important part of the solar wind. The evidence is gained through the application of new image processing techniques to coronagraph observations. The observations are presented, and their implications are discussed in the context of the current model of Sun-heliospheric connections.

Casgliad o ysgrifau ar athroniaeth crefydd yn ymateb i ddisgwrs y cyfnod ar ystyr bodolaeth ac argyfwng cymdeithas sy'n ymwrthod â chrefydd gristnogol a bodolaeth Duw. Trafodir natur yr iaith a geir mewn credoau crefyddol a'n dealltwriaeth ohoni a thrafodir theorïau ynglŷn â thragwyddoldeb.

The Sun is a dynamic, complex system, full of interesting and important features. These kinds of features can be modeled in various ways, such as with Non-Linear Force-Free Field (NLFFF) models. In this paper, NLFFF simulations are built. The intention is to estimate spatial patterns of the magnetic field in the solar chromosphere and corona and changes in the free energy in the system, in particular losses of energy as a result of solar eruptions. Most existing models have a temporal cadence of 12 minutes at best (that is, the situation is simulated every 12 minutes). The method discussed in this paper makes various approximations but it aims to achieve a temporal cadence of 45 seconds. The method used is found to successfully simulate synthetic data, and when dealing with real data, it produces images which frequently correspond well to observations. Several reductions in the free energy of the system are seen, corresponding to observed eruptions.

Yn y casgliad hwn ceir cyflwyniadau o Gynhadledd Ryngwladol y Coleg Cymraeg Cenedlaethol, 1-3 Gorffennaf 2014. 'Pa le i'n hiaith mewn Addysg Uwch?' oedd thema'r gynhadledd ac mae'r cyflwyniadau'n ymwneud yn bennaf â pholisi iaith ac addysg yng Nghymru ac Ewrop.

Forty years of research into reading has elucidated many of the psychological processes underpinning the reading process, but until recently, the cognitive underpinnings of fluency have been relatively unknown. In this review, a description is provided of reading fluency as a cognitive and neurobiological phenomenon, including the research that has gone into understanding this process. My own and my colleagues’ work has focused heavily on this area, and I outline our main findings to date. I end by outlining the implications of this work for our understanding of reading fluency in normally developed and dyslexic adults.

Detholiad o waith Max Weber yn ei eiriau ei hun wedi eu cyfieithu i'r Gymraeg. Weber oedd un o brif sylfaenwyr cymdeithaseg fodern a llywiodd ei ddull gweithio newydd 'Verstehen', sef dull deongliadol neu gyfranogol o astudio ffenomena gymdeithasol, y maes. Rhoddodd Weber bwyslais ar ddeall yr ystyr a phwrpas mae unigolyn yn ei roi i'w weithredoedd ei hun.

Detholiad o waith Karl Marx yn ei eiriau ei hun wedi eu cyfieithu i'r Gymraeg. Yma ceir disgrifiadau gan Marx ar wahanol fathau o gymdeithas, e.e. cymdeithasau cyntefig, ffiwdal, cyfalafol. Dyfynnir o gyhoeddiadau megis Y Teulu Sanctaidd, Yr Ideoleg Almaenaidd a Maniffesto'r Blaid Gomiwnyddol.

Datblygwyd y llawlyfr ar-lein yma gan Brifysgol Cymru: Y Drindod Dewi Sant. Mae’n cyflwyno a thrafod prif elfennau creadigrwydd yn yr ysgol gynradd ar gyfer ymarferwyr y Cyfnod Sylfaen a Chyfnod Allweddol 2. Mae’r llawlyfr yn ymateb i ddatblygiadau polisi Llywodraeth Cynlluniad Cymru ac yn cynnig arweiniad ar sut i baratoi, creu, cynllunio, datblygu, trefnu ac asesu gweithgareddau dysgu ‘creadigedd’ o ansawdd uchel.

Yr Athro Syr Deian Hopkin yn siarad â myfyrwyr ar 20 Mawrth 2014 ynglŷn â sut i goffáu’r Rhyfel Mawr yng Nghymru yn ystod canmlwyddiant dechrau'r rhyfel.

Cynan (Albert Evans-Jones, 1895-1970) was one of the most prominent Establishment figures in Wales for a large part of the twentieth-century. He served as Archdruid twice and played a crucial role in the controversial decision by the Gorsedd of Bards to take part in the Investiture ceremony of Prince Charles in Caernarfon castle on 1 July 1969. He was also one of the authors of the National Eisteddfod’s Welsh-language Rule, a policy which he supported firmly during his period as President of the Eisteddfod Court towards the end of his life. In contrast, Dafydd Iwan was one of the main leaders of the Welsh Language Society, the protest group that adopted radical campaigning tactics during the 1960s. In this article, the clash between Cynan and Dafydd Iwan is seen as one representing a struggle about the very definition of Welshness at the time.

In 1987, the artist Cliff McLucas was working at Ysgol Gyfun Ddwyieithog Dyffryn Teifi on a project titled ‘The Dyfed Media Residency’. As part of his work, he created a series of portraits of teachers and related staff using the technique of photographic collage. Amongst these pictures is a portrait of the school’s English teacher at the time, the politician and Welsh-language activist, Cynog Dafis. I propose a close reading of this portrait that centres on Dafis’ public political career in the context of McLucas’ own life experience. McLucas moved from Scotland to Tregroes, Ceredigion, in 1973. At the same time he learnt Welsh. McLucas’s portrait will be discussed in terms of a self-conscious response to his presence as an incomer in Ceredigion whilst facing a member of the intellectual elite of his host culture. In conclusion, a relationship between McLucas’ portrait of Dafis and Sidney Vosper Curnow’s painting from 1908, ‘Salem’, will be suggested. At the end of the article, a short post-script relates the discussion of McLucas’ portrait of Dafis to contemporary issues of in-migration and out-migration in and from rural areas of Wales.