A recent publication states and proves the conditions under which a linear time-invariant system, with state-space realization , can be made strictly positive real via constant output feedback. This note is intended to briefly present the development of the proof and to give due credit to the first proofs of this statement.

It is shown that the least order dynamic output feedback which stabilizes a given linear time invariant plant can be found via a semi-deenite program.

abstract regarding temporal variation of rivers discharge and demands, for suitable use of dam reservoirs stored water, application of operation rule curves is necessary. operation rules are expressed with rule curves. application of yield model is one of the methods of operation curve preparation, which correlates reservoir operation with reservoir storage volume in first period. in this study...

the current study was conducted in order to examine the effectiveness of shelf procedure in symptomatic adult patients due to hip dysplasia. this study is retrospective and was performed on patients who had undergone surgery by one orthopaedic surgical team during the past 20 years. twenty-three men and twenty-three women were enrolled in the study with a mean age of 29.3 years at the time of o...

background and purpose: preoperative fast is the essential part of preoperative care for those patients who are candidates for elective surgery. fast prolongation results in side effects such as: sweating, irritability, decrease in blood sugar and restlessness. despite the noticeable changes in fasting guidelines and their application in many countries, it seems that in iran, these rules are no...

normal 0 false false false en-us x-none ar-sa background: the purpose of the present study was to determine the post-operative analgesic effects of preemptive intravenous (iv) paracetamol and the amount of reduction in tramadol (contramal ® ) consumption. materials and methods: following local research ethics committee approval, asai-ii, 300 patients were assigned in a randomized manner into th...

Partial nephrectomy, using open surgery or laparoscopy, is a standard surgical approach to treat renal disorders. The objective of this study was to compare and evaluate the feasibility and safety of laparoscopic partial nephrectomy using figure eight ligation technique. Mixed-breed dogs were randomly dedicated for partial nephrectomy using laparoscopy (n=6) and open surgery (n=6). During 30 da...