Investigation of serendipitious WFC sources

The serendipitious WFC sources under investigation, i.e., those which just happened to lie in the field of view while another object was being studied, were disappointing. The integration times were chosen to suit the primary target not the serendipitous targets. UX UMa, CZ Ori, BI Ori, WX Cet and AR And were not detected. A long (approximately 17 ksec) pointed observation of UX Uma (PI Wood) has since been carried out (February 1993) and the data is expected shortly. The other observations were much more successful. V471 Tau was observed with the WFC for 6.5 hrs with the S1 filter and 1.1 hrs with the S2b filter. It was easily detected with a count rate of 0.03 cps in the S1 filter and 0.15 cps in the S2b filter. The oscillations were seen, even before the data was folded, as was expected from preliminary results from the survey (Barstow et al. 1992). The pointed observations provide a much better phase coverage of the oscillations than did the survey data where the coverage was sparse. These data will be presented in a paper with the PSPC data (PI's Robinson and Shipman) and the pulse profiles in the different wavelengths will be compared

Coherent Oscillations In UX Ursae Majoris

NSFMcDonald Observator

PERANCANGAN APLIKASI SIMULASI PENGATURAN KECEPATAN KIPAS ANGIN DENGAN METODE BACKPROPAGATION

The development of the field of computer programming has brought many advantages, especially in terms of the ease and practicality of using tools that are connected to a computer. Allows these tools to be controlled from a computer. The tool can be maximized and can more quickly control itaccording to the user's wishes. The fan is for air conditioners, air fresheners, dryers (usually using heat-generating components). Fans are also found in vacuum cleaners and various ornaments for room decoration, the fan serves to keep the air temperature from going over the set temperature limit. In everyday life can be found various types of simulations. Simulation is a process of imitating something real and its surroundings (state of affairs). The action of doing this simulation generally describes the key characteristics of the behavior of a physical system or an abstract system. The development of the field of computer programming has many advantages, especially in terms of the ease and practicality of using devices connected to computers. Allows these tools to be controlled from a computer. The tool can be maximized and can more quickly control it according to the user's wishes. The fan is for air conditioners, air fresheners, dryers (usually using heat-generating components). Fans are also found in vacuum cleaners and various ornaments for room decoration, the fan serves to keep the air temperature from going over the set temperature limit. In everyday life can be found various types of simulations. Simulation is a process of imitating something real and its surroundings (state of affairs). The act of performing this simulation generally describes the key characteristics of the behavior of a particular physical system or abstract system

Effects of Rotationally-Induced Mixing in Compact Binary Systems with Low-Mass Secondaries and in Single Solar-Type Stars

Many population synthesis and stellar evolution studies have addressed the evolution of close binary systems in which the primary is a compact remnant and the secondary is filling its Roche lobe, thus triggering mass transfer. Although tidal locking is expected in such systems, most studies have neglected the rotationally-induced mixing that may occur. Here we study the possible effects of mixing in the mass-losing stars for a range in secondary star masses and metallicities. We find that tidal locking can induce rotational mixing prior to contact and thus affect the evolution of the secondary star if the effects of the Spruit-Tayler dynamo are included both for angular momentum and chemical transport. Once contact is made, the effect of mass transfer tends to be more rapid than the evolutionary time scale, so the effects of mixing are no longer directly important, but the mass transfer strips matter to inner layers that may have been affected by the mixing. These effects are enhanced for secondaries of 1-1.2 Msun and for lower metallicities. We discuss the possible implications for the paucity of carbon in the secondaries of the cataclysmic variable SS Cyg and the black hole candidate XTE J1118+480 and for the progenitor evolution of Type Ia supernovae. We also address the issue of the origin of blue straggler stars in globular and open clusters. We find that for models that include rotation consistent with that observed for some blue straggler stars, evolution is chemically homogeneous. This leads to tracks in the HR diagram that are brighter and bluer than the non-rotating main-sequence turn-off point. Rotational mixing could thus be one of the factors that contribute to the formation of blue stragglers.Comment: 46 pages, 18 figure

Religious experience: beginning the research

This Paper honours the centenary of Sir Alister Hardy’s birth, and celebrates his achievements. My part in this is to speak about the early days of what was then the Religious Experience Research Unit. For those involved in this pioneering project, those were indeed very stimulating times, and I could attempt to convey some flavour of them with a great variety of anecdotes. We may later have had our disagreements, but it is above all with great affection and gratitude that I look back on my association with Alister – as must, I feel sure, all those who worked with him. Whatever other feelings one may have had when opening that extraordinary mass of letters which came in from those early appeals, it was tremendously exciting. You simply never knew what the next post might bring

Gambling With Debt: The English Premier League

This paper aims to investigate the impact of debt on financial performance in the English Premier League from the 2000/01 season to the 2017/18 season. Panel model estimations concluded debt has a significant inverse relationship with financial performance. This relationship may potentially be stronger in larger clubs and could be present through human capital investment’s significant direct relationship with financial performance. This further emphasised usages of intangible assets as a player human capital investment indicator, rather than using wage costs like previous studies. Furthermore, filling a gap regarding how capital structures may be used to impact financial performance within’ football

Causes of Absences in the Rural Schools of Grayson County, Kentucky

This study has been an undertaking for the purpose of finding the real causes of non-attendance in the rural schools of Grayson County, Kentucky. This study applies only to those children who have become members of some particular school. Grayson county is principally rural with the interests of the people practically the same the county over