OBJECTIVE To evaluate the effect of real-time ultrasound guidance using a regular or Doppler ultrasound technique for placement of central venous catheters. DATA SOURCES We searched for published and unpublished research using MEDLINE, citation review of relevant primary and review articles, conference abstracts, personal files, and contact with expert informants. STUDY SELECTION From a poo...

BACKGROUND We conducted a study of participants' abilities to place a laparoscopic port for in vivo biosensor use. Biosensors have physical limitations that make port placement crucial to proper data collection. A new port placement algorithm enabled evaluation of port locations, using segmented patient data in a virtual environment. METHODS Port placement scoring algorithms were integrated i...

In this paper, we study the data placement problem from a reorganization point of view. EEective placement of the declustered fragments of a relation is crucial to the performance of parallel database systems having multiple disks. Given the dynamic nature of database systems, the optimal placement of fragments will change over time and this will necessitate a reorganization in order to maintai...

A survey of 67 experienced orthopedic surgeons indicated that precise portal placement was the most important skill in arthroscopic surgery. However, none of the currently available virtual reality simulators include simulation / training in portal placement, including haptic feedback of the necessary puncture force. This study aimed to: (1) measure the in vivo force and stiffness during a port...

BACKGROUND Placement of a central venous catheter (CVC) in a pediatric patient is an important skill for pediatric emergency medicine physicians but can be challenging and time consuming. Ultrasound (US) guidance has been shown to improve success of central line placement in adult patients. OBJECTIVES This article aims to review the literature and evaluate the benefit of US guidance in the pl...

Printed Circuit Boards (PCBs) are extensively used in diverse electronic products today. The placement process tends to be a bottleneck in a PCB assembly line, and many SMT PCB assembly researches focused on improving the process perspective of the machine operations. This research proposed a BPN data mining model to analyze the effect of a head calibration process on the defects of placement o...

Server consolidation using virtualization technology has become an important technology to improve the energy e ciency of data centers. Virtual machine placement is the key in the server consolidation. In the past few years, many approaches to the virtual machine placement have been proposed. However, existing virtual machine placement approaches to the virtual machine placement problem conside...

The tendency to fight is a well-known behavior in Valdostana cattle, and non-cruel traditional contests are organized yearly by farmers to identify the most dominant cow. Cow battles consist of elimination matches that have important economic implications for both tourism and farmers. The aims of this study are 1) to validate a scoring system to express fighting ability, and 2) to carry out a g...

OBJECTIVES Initiation of postpyloric feeding is often delayed by difficulties in placement of enteral tubes. We evaluated the effectiveness of bedside postpyloric enteral tube (PET) placement using an electromagnetic (EM)-guided device. We hypothesized that: 1) EM-guided placement of PETs would be successful more often than standard blind placement with a shorter total time to successful placem...