Generation of even and odd harmonics in the XUV region with controlling the relative delay and polarization of two-color fields

Changes in pulse-wave velocity were simulated by changing the relative timing between aortic and carotid sinus barorecptor activity in anesthetized rabbits and dogs. In the rabbit, electrical stimulation was used to vary the timing; in the dog, it was also varied by perfusing the carotid sinuses with externally generated pressure pulses that could be triggered in any portion of the cardiac cycle. Changing the relative delay between aortic and carotid sinsus nerve stimulation did not result in variations of blood pressure or heart rate in the rabbit. Varing the time of electrical stimulation of the carotid sinus nerve caused at most 5 mmHg change of blood pressure in the dog. Delay-related heart-rate changes could be usually observed only when the stimulus consisted of short, high-intensity bursts. When the carotid sinus was externally perfused with pulses of pressure, only one out of five dogs showed delay-related variations in blood pressure (3mmHg) and heart rate (6 beats/min). It is concluded that variations in pulse-wave velocity are unlikely to play a significant role in acute cardiovascular control.

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A procedure to correct the effects of a relative delay between the quadrature components of radar signals at base band

Annales Geophysicae ◽

10.5194/angeo-23-39-2005 ◽

2005 ◽

Vol 23 (1) ◽

pp. 39-46

Author(s):

◽

La Hoz ◽

◽

Keyword(s):

Radar Data ◽

Center Frequency ◽

Digital Receiver ◽

The Real ◽

Incoherent Scatter ◽

Singular Region ◽

Analysis Strategies ◽

Relative Delay ◽

Base Band ◽

Band Signal

Abstract. The real and imaginary parts of baseband signals are obtained from a real narrow-band signal by quadrature mixing, i.e. by mixing with cosine and sine signals at the narrow band's selected center frequency. We address the consequences of a delay between the outputs of the quadrature mixer, which arise when digital samples of the quadrature baseband signals are not synchronised, i.e. when the real and imaginary components have been shifted by one or more samples with respect to each other. Through analytical considerations and simulations of such an error on different synthetic signals, we show how this error can be expected to afflict different measurements. In addition, we show the effect of the error on actual incoherent scatter radar data obtained by two different digital receiver systems used in parallel at the EISCAT Svalbard Radar (ESR). The analytical considerations indicate a procedure to correct the error, albeit with some limitations due to a small singular region. We demonstrate the correction procedure on actually afflicted data and compare the results to simultaneously acquired unafflicted data. We also discuss the possible data analysis strategies, including some that avoid dealing directly with the singular region mentioned above.

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Measurement of the relative delay between signals propagating in a multipath environment

10.1109/oceans.1974.1161438 ◽

1974 ◽

Author(s):

A. Lindgren ◽

K. Gong

Keyword(s):

Relative Delay ◽

Multipath Environment

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Comparison of Cemented and Non-cemented Allografts in Dogs with Osteosarcoma

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1632543 ◽

1998 ◽

Vol 11 (04) ◽

pp. 178-184 ◽

Cited By ~ 22

Author(s):

D. Steinheimer ◽

R. D. Park ◽

B. E. Powers ◽

R. C. Straw ◽

N. Endenburg ◽

...

Keyword(s):

Scoring System ◽

Implant Loosening ◽

Allograft Failure ◽

Histological Score ◽

Radiographic Score ◽

Fresh Frozen ◽

Local Tumour ◽

Relative Delay ◽

The Mean ◽

Graft Interface

SummaryThis study compares the radiographic and histological appearance of cemented and non-cemented massive cortical allografts in dogs that underwent a limb sparing procedure for osteosarcoma of the distal radius. Treatment consisted of removal of the affected bone and pancarpal arthrodesis using non-cemented (n = 13) or cemented (n = 47) fresh-frozen allografts. Allografts were evaluated using a radiographic and histological scoring system and compared statistically between groups. Allografts with better healing received a higher radiographic score and a lower histological score. The mean radiographic scores, for proximal union and distal union, were significantly greater in the non-cemented group at most evaluation periods. Complications after the operation included screw, plate, allograft and host bone failure, infection and local tumour recurrence. Screw failure in the allograft and allograft failure were significantly more common in the non-cemented group. Histological examination was performed on 44 dogs and cement increased the mean combined histological scores, and mean healing scores of the distal host-graft interface significantly. The use of cemented allografts significantly decreases complications associated with implant loosening or allograft failure but may slightly delay allograft healing. At this point, the clinical relevance of the delay in healing is questionable and the benefits of intramedullary PMMA would appear to outweigh this relative delay in healing.This study evaluated 60 radial allografts after limb sparing procedures using a standardized radiological and histological scoring system. The use of cemented allografts significantly decreased complications associated with implant loosening or allograft failure but may slightly delay allograft healing.

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Analysis and Design of On-Chip RF Interconnect Line for Wideband True-Time Delay Line Application

Journal of Circuits System and Computers ◽

10.1142/s0218126621501462 ◽

2021 ◽

pp. 2150146

Author(s):

Yang Chen ◽

Zhaoyang Qiu ◽

Xiaofei Di ◽

Xianqing Chen ◽

Yu-Dong Zhang

Keyword(s):

Time Delay ◽

Delay Line ◽

Delay Model ◽

Analysis And Design ◽

True Time Delay ◽

Bicmos Technology ◽

Sige Bicmos ◽

Relative Delay ◽

True Time ◽

On Chip

This paper presents the analytical resistance–capacitance–inductance–conductance (RLCG) model of the on-chip interconnect line (IL) based on its structure, and the proposed model can be used to design IL and analyze the delay characteristics. Using electromagnetic (EM) simulation, the relations between the inductance, quality factor and the width, length of IL are obtained, which verifies the proposed RLCG model of IL. The delay model of IL is derived and verified with respect to the effects of the [Formula: see text] and [Formula: see text] by simulation, which can provide the benefit for the true-time delay line (TTDL) design using IL. This work proposes the experiments on the delay characteristics of 3-bit TTDL with IL based on 0.13[Formula: see text][Formula: see text]m SiGe BiCMOS technology. The group delay and transient delay of the TTDL are measured, which exhibits a maximal relative delay of 35 ps with an average of 5 ps delay resolution over a frequency range of 14–34[Formula: see text]GHz. The results are consistent with the delay analysis based on the proposed IL model.

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A scheduling algorithm for relative delay differentiation

ATM 2000. Proceedings of the IEEE Conference on High Performance Switching and Routing (Cat. No.00TH8485) ◽

10.1109/hpsr.2000.856683 ◽

2002 ◽

Cited By ~ 7

Author(s):

S. Bodamer

Keyword(s):

Scheduling Algorithm ◽

Relative Delay

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The Post-Concussional State: Neurophysiological Aspects

The British Journal of Psychiatry ◽

10.1192/bjp.167.4.514 ◽

1995 ◽

Vol 167 (4) ◽

pp. 514-521 ◽

Cited By ~ 54

Author(s):

M. R. Watson ◽

G. W. Fenton ◽

R. J. McClelland ◽

J. Lumsden ◽

M. Headley ◽

...

Keyword(s):

Psychiatric Morbidity ◽

Closed Head Injury ◽

Auditory Brainstem ◽

Residual Symptoms ◽

Traumatic Amnesia ◽

Accident And Emergency ◽

Relative Delay ◽

Post Traumatic ◽

A Minor ◽

Cortical Dysfunction

BackgroundTwenty-six young men admitted to an Accident and Emergency Department for observation following a minor closed head injury (post-traumatic amnesia (PTA) less than 12 hours) were investigated within 24 hours of admission (day 0) and followed up at 10 days, 6 weeks and 1 year after the trauma.MethodInvestigations at day 0 included physical examination, completion of post-concussional symptom and stress-arousal checklists, computerised EEG (CEEG) and auditory brainstem evoked potential (BAEP) recordings. These were repeated at ten days and six weeks. At 12 months follow-up, the Present State Examination (PSE) was carried out and a further post-concussional symptom checklist completed.ResultsPost-concussional symptomatology declined progressively from day 0 but half had residual symptoms at 1 year. Seventy-two per cent ran an acute course with recovery by 6 weeks, 8% a chronic unremitting course and 20% initially improved but had an exacerbation of symptoms between 6 weeks and 12 months. The CEEG alpha-theta ratios decreased significantly between days 0 and 10, reaching a baseline thereafter. Measures of CEEG recovery from all channels correlated with symptom counts at six weeks; the slower the recovery the greater the symptoms. A relative delay in left temporal recovery was associated with residual psychiatric morbidity (PSE ID scores) at 12 months. Prolonged central brainstem conduction times occurred in 27% of patients at day 0. These correlated positively with PTA and degree of psychiatric morbidity (PSE ID scores) at 12 months.ConclusionsSymptom chronicity was accompanied by continuing brainstem dysfunction, while the degree of transient cortical dysfunction appeared to have a direct influence in the intensity of early organic symptom reaction to the trauma. Levels of perceived stress at the time of the injury, or afterwards, were not related to symptom formation.

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