The Effects of Ambient Shipping Noise on the Performance of Single and Multiple Channel Moment Detectors for Unknown Transient Signals

1998 ◽  
Author(s):  
Lisa a. Pflug ◽  
George E. Ioup ◽  
Juliette W. Iopu
Keyword(s):  
Transient Signals ◽  
Multiple Channel

Analysis of Analog Photonic Links Employing Multiple-Channel (Arrayed) Receivers

2008 ◽  
Author(s):  
Jason D. McKinney ◽  
Vincent J. Urick ◽  
Frank Bucholtz ◽  
Carl Villarruel ◽  
Christopher Sunderman
Keyword(s):  
Multiple Channel ◽  
Photonic Links

Price Advertising by Multiple Channel Members

2011 ◽  
Author(s):  
Linli Xu ◽  
Kenneth C. Wilbur ◽  
Sivaramakrishnan Siddarth ◽  
Jorge M. Silva-Risso
Keyword(s):  
Multiple Channel ◽  
Price Advertising

scholarly journals Batteries State of Health Estimation via Efficient Neural Networks with Multiple Channel Charging Profiles

IEEE Access ◽  
2020 ◽  
pp. 1-1
Author(s):  
Noman Khan ◽  
Fath U Min Ullah ◽  
Afnan ◽  
Amin Ullah ◽  
Mi Young Lee ◽  
...  
Keyword(s):  
Neural Networks ◽  
State Of Health ◽  
Multiple Channel

scholarly journals A rationally engineered decoder of transient intracellular signals

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Claude Lormeau ◽  
Fabian Rudolf ◽  
Jörg Stelling
Keyword(s):  
Rapid Prototyping ◽  
Positive Feedback ◽  
Budding Yeast ◽  
Short Pulse ◽  
Design Principles ◽  
Computational Method ◽  
Transient Signals ◽  
Temporal Filtering ◽  
Signaling Dynamics ◽  
Intracellular Signals

AbstractCells can encode information about their environment by modulating signaling dynamics and responding accordingly. Yet, the mechanisms cells use to decode these dynamics remain unknown when cells respond exclusively to transient signals. Here, we approach design principles underlying such decoding by rationally engineering a synthetic short-pulse decoder in budding yeast. A computational method for rapid prototyping, TopoDesign, allowed us to explore 4122 possible circuit architectures, design targeted experiments, and then rationally select a single circuit for implementation. This circuit demonstrates short-pulse decoding through incoherent feedforward and positive feedback. We predict incoherent feedforward to be essential for decoding transient signals, thereby complementing proposed design principles of temporal filtering, the ability to respond to sustained signals, but not to transient signals. More generally, we anticipate TopoDesign to help designing other synthetic circuits with non-intuitive dynamics, simply by assembling available biological components.

scholarly journals Monitoring of cerebral high intensity transient signals during catheter interventions and surgery for congenital heart disease in infants using NeoDoppler

2021 ◽  
Vol 22 (Supplement_1) ◽  
Author(s):  
M Leth-Olsen ◽  
G Doehlen ◽  
H Torp ◽  
SA Nyrnes
Keyword(s):  
Congenital Heart Disease ◽  
Heart Disease ◽  
High Intensity ◽  
Congenital Heart ◽  
Frame Rate ◽  
Intensity Increase ◽  
Research Committee ◽  
Transient Signals ◽  
Ultrasound Beam ◽  
High Intensity Signal

Abstract Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): The Joint Research Committee between St. Olavs Hospital and the faculty of Medicine, NTNU. The Norwegian Association for Children with Congenital Heart Disease Research Foundation, FFHB Background   There is a risk of gaseous- and solid micro embolus formation during transcatheter procedures (CATH) and surgery in children with congenital heart disease (CHD). Silent strokes during surgery or CATH may contribute to neurological impairment. NeoDoppler is a non-invasive ultrasound system based on plane wave transmissions to continuously monitor cerebral blood flow in infants with an open fontanelle. Gaseous- and solid micro embolus passing through the ultrasound beam create High Intensity Transient Signals (HITS) in the Doppler signal.  Purpose We aimed to study the amount of HITS during CATH and surgery in infants using NeoDoppler.  Methods   The NeoDoppler probe operates at a frequency of 7.8 MHz. The frame rate is 300 fps and the beam covers a wide cylindrical area (10/35mm width/depth). The system displays a color M-mode Doppler and a spectrogram. The broad ultrasound beam permits prolonged scanning time of each event as the HITS move through the ultrasound beam. The high framerate and color M-mode allows for tracking of embolies in depth. In this study the NeoDoppler probe was attached to the anterior fontanelle of infants with CHD during CATH (n = 15) and cardiac surgery (n = 13). HITS were defined as high intensity signal creating skewed lines in the color M-mode Doppler moving away or towards the probe (blue/red) with a corresponding high intensity signal in the spectrogram. HITS were grouped into single HITS and HITS with curtain effect. Single HITS were defined as single skewed lines in the color M-mode Doppler and spectrogram. HITS with curtain effect were defined as skewed broad lines or multiple intensity increase lines in the color M-mode Doppler with corresponding intensity increase that filled the entire doppler curve. HITS with curtain effect are believed to represent numerous HITS that could not be separated from each other in the spectrogram. HITS were manually detected in an in-house MatLab application. Results   The study group consisted of 28 infants (17 males) with different CHD who underwent CATH or surgery. The median age and weight was 96 days (range 3-240 days) and 5650 g (range 2400-8085 g). HITS were detected in 13/15 patients during CATH with a total of 392 HITS (Median 12, Range 0-149) and in all patients during surgery with a total of 772 HITS (Median 45, Range 11-150).  The picture shows examples of single HITS (panel A) and HITS with curtain effect (panel B). One can appreciate the embolic trajectory pattern in depth over time in the color M-mode Display.  Conclusion   In this study we found that NeoDoppler enables detection of frequent HITS in patients with CHD undergoing surgery or CATH. NeoDoppler could become a useful tool to guide modifications of procedures, with aim to reduce the risk of silent stroke. However, further studies are needed to validate the technique. Abstract Figure.

New Graft Dispenser to Simplify Hair Transplantation

1997 ◽  
Vol 14 (2) ◽  
pp. 201-202
Author(s):  
Isabel M. Banuchi
Keyword(s):  
Stainless Steel ◽  
Counting Process ◽  
Open Channel ◽  
Saline Solution ◽  
Hair Transplantation ◽  
Multiple Channel ◽  
Loading Process ◽  
New Instrument ◽  
Disposable Plastic

The Banuchi graft dispenser is an instrument for transplanting a plurality of hair grafts into preformed holes that facilitates and reduces the time of the implant procedure. The graft dispenser is an elongated hollow tube having both proximal and distal ends open to facilitate the hair graft loading process. It has an open channel extending along the length of the tube that holds the grafts, simplifying the counting process during the procedure. This instrument offers many advantages. The most attractive advantage for both patients and surgeons is that it reduces the time of implantation significantly. This reduction in time is due to the fact that with the graft dispenser, the surgeon can use the instrument not only to hold the grafts, but to dilate the preformed incisions and make the insertion more accurately and quickly. The new instrument has been designed in stainless steel and soon will be available in disposable plastic for further convenience. A multiple-channel instrument with a common funnel has been tested and proven to be very useful. A special tray to keep the loaded grafts in saline solution has also been designed.

Sign in / Sign up

Export Citation Format

Share Document