Simultaneous optical polarimetry and X-ray observations of the magnetic CV CP Tuc (AX J2315--592)

CP Tuc (AX J2315--592) shows a dip in X-rays which lasts for approximately half the binary orbit and is deeper in soft X-rays compared with hard X-rays. It has been proposed that this dip is due to the accretion stream obscuring the accretion region from view. If CP Tuc was a polar, as has been suggested, then the length of such a dip would make it unique amongst polars since in those polars in which a dip is seen in hard X-rays the dip lasts for only 0.1 of the orbit. We present optical polarimetry and RXTE observations of CP Tuc which show circular polarisation levels of ~10 per cent and find evidence for only one photometric period. These data confirm CP Tuc as a polar. Our modelling of the polarisation data imply that the X-ray dip is due to the bulk of the primary accretion region being self-eclipsed by the white dwarf. The energy dependence of the dip is due to a combination of this self-eclipse and also the presence of an X-ray temperature gradient over the primary accretion region.Comment: 6 pages, accepted for publication in MNRA

HCU400: An Annotated Dataset for Exploring Aural Phenomenology Through Causal Uncertainty

The way we perceive a sound depends on many aspects-- its ecological frequency, acoustic features, typicality, and most notably, its identified source. In this paper, we present the HCU400: a dataset of 402 sounds ranging from easily identifiable everyday sounds to intentionally obscured artificial ones. It aims to lower the barrier for the study of aural phenomenology as the largest available audio dataset to include an analysis of causal attribution. Each sample has been annotated with crowd-sourced descriptions, as well as familiarity, imageability, arousal, and valence ratings. We extend existing calculations of causal uncertainty, automating and generalizing them with word embeddings. Upon analysis we find that individuals will provide less polarized emotion ratings as a sound's source becomes increasingly ambiguous; individual ratings of familiarity and imageability, on the other hand, diverge as uncertainty increases despite a clear negative trend on average

Value added at constant prices: estimates for Rhodesian manufacturing industries and some observations

A journal article on the then Rhodesia manufacturing industry.Economic analysis of an empirical nature requires reliable data to fit to the theoretical relationship between the variables under investigation. Absolutely correct statistics are rarely available, but official sources of economic statistics generally present a reasonably useful reference for the economist. One such indicator is the volume index for manufacturing industries. Trends in the actual volume of the various outputs at constant prices are found useful for some economic studies. However, the volume index in several countries goes further than this. It is held to be an indicator of changes in value added or net output at constant factor cost. These factors are, broadly, the labour and capital inputs. The real value added by productive enterprise is significant information to the economist because from this data may be derived such concepts as value added per head and the respective shares of labour and capital — that is the funds at constant factor prices out of which come the rewards for the various productive factors, land, labour, plant and machinery, entrepreneural enterprise, together with payments for capital consumption and taxation

RX J2115-5840: confirmation of a new near-synchronous polar

Schwope et al (1997) suggested that the newly discovered Polar RX J2115-5840 is a near-synchronous system. We have obtained circular polarisation observations of RX J2115-5840 which show that the spin and orbital periods differ by 1.2%. We find the first direct evidence of `pole-switching' in a near-synchronous Polar. Further our data requires that the accretion flow must be directed onto the same magnetic field line at all spin-orbit beat phases implying that at some phases the flow must follow a path around the white dwarf before accreting.Comment: To be published in Proc Annapolis workshop on magnetic CVs, held in July 199

David Ramsay to John Kean, October 31, 1792

David M. Ramsay in Charleston, SC wrote to John Kean, unaddressed. The letter discussed a particular monetary issue in regard to this profession as a physician. The issues discussed included the renewal of relocating African-Americans in advance of redistricting to increase representation. This appalled Ramsay. Northern states retaliated against southern transgressions by sending their African-Americans down there. Ramsay claimed his colleagues distrusted him greatly. People mentioned: Governor of South Carolina, Attorney General of South Carolina. Places mentioned: Columbia. Notable quote: I abhor national reflection but had almost said all Jews are rascals with but very few exceptions.https://digitalcommons.kean.edu/lhc_1790s/1184/thumbnail.jp

David Ramsay to John Kean, April 8, 1793

David Ramsay wrote from Charleston, South Carolina to John Kean in Philadelphia, Pennsylvania. Ramsay discussed debts incurred during the American Revolution and Secretary of the Treasury, Alexander Hamilton’s, plan. Ramsay praised Kean’s letter to Congress regarding Revolutionary War debt and mentioned an excerpt was published anonymously in a newspaper. Ramsay also mentioned that a French Frigate brought official dispatches of a formal declaration of war against England.https://digitalcommons.kean.edu/lhc_1790s/1517/thumbnail.jp

David Ramsay to John Kean, July 6, 1793

David Ramsay in Charleston, SC wrote to John Kean, addressed to Philadelphia, PA. Ramsay mentioned the South Carolina frigate and regiments of cavalry. The letter discussed South Carolina\u27s sovereign debt. People included: Mrs. Kean. Places mentioned: South Carolina, Pennsylvania.https://digitalcommons.kean.edu/lhc_1790s/1362/thumbnail.jp

David Ramsay to John Kean, July 28, 1788

David Ramsay wrote from Charleston to John Kean, addressed to New York. He wrote regarding an upcoming senate election, in particular one of the candidates, Charles Pinckney. He wrote that several other men have been mentioned such as General Manthie and Ralph Izard. People included: Robert Barnwell, John Mutledgehttps://digitalcommons.kean.edu/lhc_1780s/1221/thumbnail.jp

David Ramsay to John Kean, December 18, 1788

David Ramsay wrote from Charleston to John Kean, address not included.He wrote about elections to new government positions. He mentioned that he had heard John\u27s name said a lot.https://digitalcommons.kean.edu/lhc_1780s/1237/thumbnail.jp