منابع مشابه
Discharge Against Medical Advice in Teaching Hospitals: A Telephone Survey
Background: Discharge with personal consent is considered as one of the main problems in hospitalization condition since many patients leave the hospital prematurely against the doctor’s advice. Thus, the aim of this study was to identify the factors affecting the discharge with personal satisfaction in selected teaching hospitals of Tehran University of Medical Sciences. Methods: The pr...
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The restricted earth fault (REF) relay is a type of differential protection which is used for detection of internal ground faults of power transformers. But, during external faults and transformer energization conditions, the probability of current transformer (CT) saturation increases. Thus, the spurious differential current due to CT saturation, can lead to REF relay maloperation. In this pap...
متن کاملOn A Telephone Problem
Answer. Let f(n) be the minimum number of calls needed for n people. It is easily shown that f(1) = 0, f(2) = 1, f(3) = 3 and f(4) = 4. For n > 4, 2n− 4 calls are sufficient according to the following procedure: one of four “chief” gossips first calls each of the remaining n− 4 gossips, then the four learn each other’s (and hence everyone’s) information in 4 calls (as f(4) = 4), and finally one...
متن کاملWearing a telephone
This was an initial exploration of the usefulness and usability of wearable telephony. For more than three months, the author “wore” a suite of devices that included a no-ring, auto-answer cellular phone and a separate WWW-enabled controller. Calls and email were announced verbally and privately in the author’s earpiece. Calls were placed from the controller via a click-to-dial addressbook. The...
متن کاملA Numerical Design Technique for a Relay - Type Feedback Control System
An efficient numerical method for the design and synthesis of compensator for a relay type control system is developed and discussed. Previous works based on the interactive graphic method are reviewed and it is shown that the combination of the trequency and time domain numerical techniques provide a powerful tool in design of a wide class of relay control systems. An example is presented to d...
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ژورنال
عنوان ژورنال: American Journal of Science
سال: 1906
ISSN: 0002-9599
DOI: 10.2475/ajs.s4-21.125.339