Receiver operating characteristic

screening test was compared to the popular Mini-Mental State Examination (MMSE), which only identify dementia. VAMC and SLU researchers examined the sensitivity and specificity of both cognitive screening test, and the results revealed acceptable receiver operator curves (ROCs) on both test. (Park, Goo, & Jo, 2004, p. 11) Defined ROC as an effective method of evaluating the quality or performance of a diagnostic tests. However, only the SLUMS test is able to identify the mild neurocognitive…

Index tests The anatomic snuff box (ASB) tenderness and the longitudinal thumb compression (LTC) tests were both evaluated in 8 studies ensuring power to perform statistical analyses. The summary receiver operating characteristic curves showed that sensitivity was higher for ASB tenderness. For ASB tenderness, 8 articles studying 1164 patients were included. The sensitivity was relatively homogeneous, with a range between 0.87 and 1.00. The specificity ranged between 0.03 and 0.98 indicating…

extensive literature review. Content validity of the questionnaire was endorsed by two experts in medical curriculum development (JPF, MB). The final version of the questionnaire encompassed three domains. The first domain provided information on the characteristics of respondents, the academic level and orientation (13 items). The second domain concerned motivation for scientific training (4 items), research fellowships already accomplished by the respondents (4 items), possible constraints (9…

Visible light, Laser light, Electrical current and Ultrasound (Pretty, I. 2006). The four basic characteristics that need to be looked at for comparing devices are explained below. 1. Reliability Reliability ensures a procedure that is consistent, stable and dependable with minimal error on repeated measurement of the same variable (Pretty, I.A. et al. 2004). This is an important characteristic as the caries diagnosis device must be able to repeatedly give consistent results with different…

Organizational Communication Overview Clear and open communication is a characteristic of successful teams, effective leaders and flourishing organizations. Communication can be accomplished in numerous forms, such as oral, written, visual, and even non-verbal. All of these forms of communication require two vital components, the sender and the receiver to achieve the communications process. The channel of communication that is chosen, and the factors that mediate the messages are important to…

Sensors  Overview: Term: Fall-2014 Guide: Prof. Nagwa Bekir Topic: Fiber Optic Sensors .  Introduction: Fiber optic sensor since their emergence have been a sector of keen interest for researchers because of their specific and exclusive characteristics thus resulting into the fastest growing field in the past years. There has been a vast development in the fiber optic sensor technology since the first sensor was patient 40 years back in USA during mid 1960’s named as Fotonic sensor. This…

electronically signed using a stylus. Digital signatures, however, similar to conventional signatures, can be risky; once a digital signature is exposed to the populace, it is bound to be fabricated. Digital signatures nonetheless have extra characteristics which do not exist in traditional signatures. These additional data can be used to strengthen the signature authentication procedure. There are times when old fashion solutions do not meet our modern day demands; for an example signing a…

The important characteristics of IR is that it can’t penetrate walls or other opaque materials. Typically, with an IR-based system, a receiver is placed in every location in which a tagged device might be found. The tagged device emits IR light, and if the tagged device is in the same room as a receiver its position is known. The major advantage of an IR-based system is that as the oldest and most installed positioning technology, solutions are generally available from a variety of sources…

ISI and transmission speeds increased accordingly. 2.3 Multipath propagation Multipath propagation is caused by multipath receptions of the same signal. in city environment or indoors signal travels along different path from transmitter (Tx) to receiver (Rx). * Signal components received at slightly different times (delay) * These components are combined at Rx * Results as a signal that varies widely in amplitude, phase or polarization 2.3.1 Multipath fading When the…

CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Communication is the lifeblood of any organization. Employee morale, productivity and trust are directly influenced by communications, and effective communication can accelerate the execution of corporate strategy, maximize efficiency and company operations, and increase the overall success of an organization. “Communication refers to the process by which information is transmitted and understood between two or more people” (McShane & Von…