Sampling Essay Example | Topics and Well Written Essays - 500 words - 2

Sampling - Essay Example These groups of the elderly are unable to visit a physician. As such, it is important for nursing practitioners to visit them at their home from time to time, such as three times a year to every six weeks in order to improve their compliance to medication and the reduction in exacerbation of the condition of the patients † (Conforti, Hess, Holmboe & Lynn, 2011). Research Hypothesis – increase in the number of visits that a nursing practitioner makes to the adult patients suffering from hypertension is an effective strategy in enhancing the capacity of patients to comply with medication as well as reduce the exacerbation of their condition (Cabrita, Costa & Henriques, 2012). Aged patients suffering from hypertension - this covers the context of the research as this group forms the participants of the study, individuals aged fifty years and above, diagnosed with hypertension, and are taking their medication. Medication compliance – this refers to the ability of participants to continuously take prescribed medication as well as adhere to the right regiment, as well as failure to stop taking their medication without informing their provider. Exacerbation of the condition of patients - this refers to the worsening conditions of hypertension especially associated with the failure by patients to stick to the prescribed medication (Conforti, Hess, Holmboe & Lynn, 2011). Study sample incorporates men, women aged fifty years, and above, their participation involves diagnosis with hypertension, staying at home, and mobility issues preventing physician visits, and taking of medication. Non-probability sampling is useful in this study sample considering the specificity of the desired sample. Researchers will also use convenience sampling as only the available individuals meeting the requirements and willing to participate will be in use (Cabrita, Costa & Henriques, 2012). Study follows a causal design, as

Black Holes (Astronomy) Term Paper Example | Topics and Well Written Essays - 1000 words

Black Holes (Astronomy) - Term Paper Example This means that the general perception that if the sun runs out of its nuclear fuel and is turned into a black hole it will suck the Earth into it, is wrong (Novikov). A region of influence surrounds a black hole from where any mass or light cannot escape. At the boundary of this region light starts leaving the black hole thus the escape velocity from the gravitational field of the black hole at this point becomes equal to the speed of light. The set of such points surrounding the black hole where the escape velocity becomes equal to the speed of light forms a curved boundary which is known as event horizon. The calculation of the distance of event horizon from the centre of a black hole is a simple process if the black hole is uncharged and stationary, however in case of a charged and rotating black hole; the calculations involve very complex equations of particle physics. For a simple non-rotating and uncharged black hole, the radius of the event horizon is found to be directly proportional to the mass of the black hole and inversely proportional to the square of the speed of light. The effective mass of a black hole is the entire mass contained inside the boundaries of event horizon (Raine and Thomas). Black holes are of various different types the most common of which is stellar mass black holes which have masses up to 10 to 15 times of the mass of sun. The stellar mass black holes are formed when a star runs out of its nuclear fuel. A huge supernova explosion supersedes the formation of a black hole. The explosion results in the formation of a black core at the place where the parent star of the black hole existed. The boundary of the mass of the star only defines the core of black hole and after the formation of the black hole its influence extends up to the event horizon. Some of the black holes are present in the core of the galaxies and are of gigantic sizes ranging from