Most model updating methods use measured frequency response function (FRF) data to update analytical models whereas only response functions under base excitation can be obtained in practical vibration test due to difficulties and constraints which prevent conventional FRFs from being measured accurately.
Given the typical difficulties and constraints when collecting data from institutional, scholar and clinically referred samples, we had to rely on quite small sample sizes to perform these comparisons.
Possible difficulties and constraints include access to capital, reliance on the potentially volatile market, the already high workload of women in the family and lack of technical training.
Patients with visual difficulties, physical constraints preventing movement, or cognitive problems that impair their ability to assess the condition of the foot and to institute appropriate responses will need other people, such as family members, to assist in their care.
Often such interactions are not accessible to experimental analysis, e.g., due to difficulties, time constraints, and/or high costs associated with purification of natural sources or chemical synthesis, or accuracy and/or throughput is limited.
Very small departments will have difficulty meeting constraints regarding the spread of courses.
This distribution was meant to ensure that the study sample would include enough infants from these three key populations; however, because of recruitment difficulties, this constraint was released during the course of the study (about half of children were recruited after the removal of distribution recruitment requirement).
We overcome these difficulties by putting constraints on j and r; the constraints are derived from the coalescent theory.
Dynamic optimization of the state constrained chemical and biochemical engineering problems has always been the research hotspot due to the difficulties of handling constraints.
Pediatric pain is often undertreated/neglected due to time constraints, difficulties in timing of oral analgesics, fear of side effects of opioids and anxiolytics, and apprehension of additional pain in the use of local anesthetic injections.
