RESTORE Act Direct Component—Non‐Construction Activities (TREASURY)

2020 ◽  
Vol 44 (15) ◽  
pp. 7-7
Keyword(s):  
Direct Component

Screw Algorithm Optimized with Instantaneous Signals

2012 ◽  
Vol 229-231 ◽  
pp. 1671-1674
Author(s):  
Jian Feng Chen ◽  
Xi Yuan Chen ◽  
Xue Fen Zhu
Keyword(s):  
Navigation System ◽  
Inertial Navigation System ◽  
Angular Rate ◽  
Inertial Navigation ◽  
Strapdown Inertial Navigation System ◽  
Specific Force ◽  
Dual Quaternion ◽  
Screw Motion ◽  
Direct Component ◽  
Simulation Results

Recent dramatic progress in strapdown inertial navigation system (SINS) algorithm is the design of SINS principle based on screw algorithm, utilizing dual quaternion. In this paper, the screw algorithm consisting of angular rate and specific force is optimized under a special screw motion. The special screw motion is derived from classical screw motion and can be taken as a complicated sculling motion including classical coning motion. Subsequently, the coefficients in the multi-sample screw algorithms and the corresponding algorithm drifts are determined by minimizing the error on direct component. The simulation results of attitude and velocity errors agree with the optimization goals, except when the number of subinterval is greater than 2. An explanation of this phenomenon is delivered.

Output characteristics of a single-pulsed signal with direct component amplified by an alkali-MOPA system

2019 ◽  
Vol 120 ◽  
pp. 105717
Author(s):  
Zhigang Jiang ◽  
He Cai ◽  
Guofei An ◽  
Chaoyang Wei ◽  
Ting He ◽  
...  
Keyword(s):  
Direct Component ◽  
Output Characteristics

scholarly journals On the action of tuned rectangular frame aerials when receiving short waves

1932 ◽  
Vol 136 (829) ◽  
pp. 193-209 ◽  
Keyword(s):  
Wave Length ◽  
Long Waves ◽  
Direct Component ◽  
Short Waves ◽  
Rectangular Frame ◽  
Critical Areas ◽  
Two Component ◽  
Maximum Current ◽  
Mutual Action

Some preliminary experiments in 1927 showed that the maximum current produced by the incidence of short wireless waves on a tuned rectangular frame aerial was very critically dependent on the dimensions of the frame. An increase or decrease in the width or height of the frame by only a few centimetres might change the current many hundred fold, such current variations being quite independent of the tuning. Furthermore the reduction of current caused by, say, a decrease in the frame width could be compensated by an increase in the frame height and vice versa , but the changes in dimensions were not equal in magnitude, neither was their product a constant. In fact, the maximum current depended on the shape of the frame and also varied irregularly with the area. For a given wave-length there were certain critical areas for maximum current, and doubling the area of a frame did not quadruple the current (as when receiving long waves) but the current was reduced to one of negligible magnitude, although the frame was kept properly tuned. It was found that these anomalous effects could be explained by taking into consideration, not only the action of the passing wave, but also the mutual action between the currents flowing in adjacent parts of the frame. In order to do this, it is convenient to consider the current in any limb as the resultant of two component currents ; namely a “direct” component due to the incidence of the wave on the particular limb, and an “indirect” component due to the effects of the currents in adjacent limbs. These two components will, in general, differ in phase and amplitude, and the problem reduces to the determination of those conditions which tend to produce the maximum resultant current.

scholarly journals The humanitarian alibi: an overview and a redefinition

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Matthew Bywater
Keyword(s):  
Humanitarian Aid ◽  
International Aid ◽  
Violent Conflict ◽  
International Intervention ◽  
Direct Component ◽  
Substitution Process

AbstractThis paper explores and illustrates the diverse manifestations of the phenomenon of the ‘humanitarian alibi’, drawing upon historical and contemporary cases of violent conflict in order to identify substitutionary phenomena by governments and international actors. It affirms the existence of substitution process where humanitarian aid intervention substitutes for the prevention and resolution of violent conflict and the protection of civilian populations. The paper argues for expanding the humanitarian alibi, however, to take into account how international aid intervention compensates for both the systemic neglect of conflict related crises and for the systemic harm that exacerbates and perpetuates these crises. It also challenges the suggestion that the humanitarian alibi phenomenon is the product of a bygone era, and finds that the use of aid as a substitute for peacemaking can co-exist alongside the use of aid as a direct component of international intervention.

scholarly journals Discrimination of 2D wall textures by passive echolocation for different reflected-to-direct level difference configurations

PLoS ONE ◽  
2021 ◽  
Vol 16 (5) ◽  
pp. e0251397
Author(s):  
Léopold Kritly ◽  
Yannick Sluyts ◽  
David Pelegrín-García ◽  
Christ Glorieux ◽  
Monika Rychtáriková
Keyword(s):  
Forced Choice ◽  
Forward Masking ◽  
Test Results ◽  
Listening Test ◽  
Average Performance ◽  
Flat Wall ◽  
Direct Component ◽  
Passive Listening ◽  
Level Difference ◽  
The Impact

In this work, we study people’s ability to discriminate between different 2D textures of walls by passive listening to a pre-recorded tongue click in an auralized echolocation scenario. In addition, the impact of artificially enhancing the early reflection magnitude by 6dB and of removing the direct component while equalizing the loudness was investigated. Listening test results for different textures, ranging from a flat wall to a staircase, were assessed using a 2 Alternative-Forced-Choice (2AFC) method, in which 14 sighted, untrained participants were indicating 2 equally perceived stimuli out of 3 presented stimuli. The average performance of the listening subjects to discriminate between different textures was found to be significantly higher for walls at 5m distance, without overlap between the reflected and direct sound, compared to the same walls at 0.8m distance. Enhancing the reflections as well as removing the direct sound were found to be beneficial to differentiate textures. This finding highlights the importance of forward masking in the discrimination process. The overall texture discriminability was found to be larger for the walls reflecting with a higher spectral coloration.

scholarly journals Spectrum of Latitude Variations in the Frequency Range 1.4-2.2 cpy and a Search for Nearly Diurnal Free Polar Motion

1980 ◽  
Vol 78 ◽  
pp. 75-79
Author(s):  
A. I. Emetz
Keyword(s):  
Polar Motion ◽  
Frequency Range ◽  
Direct Component ◽  
Latitude Variation

Astronomical latitude observations of the ILS stations seem to indicate the existence of both a retrograde and a direct component of nearly diurnal polar motion with close frequencies (Yatskiv et al. 1975). The latter would manifest itself as a latitude variation with a period of about 204 mean days (m.d.) and with a phase depending on the double longitude of station.

scholarly journals Pantaloon Hernia: Obstructed Indirect Component and Direct Component with Cryptorchidism

2016 ◽  
Vol 2016 ◽  
pp. 1-3
Author(s):  
Mohan Kumar Kariappa ◽  
Vivek Harihar ◽  
Ashwini Rajareddy Kothudum ◽  
Vivekanand Kedarlingayya Hiremath
Keyword(s):  
Inguinal Hernia ◽  
Testicular Cancer ◽  
Rare Case ◽  
Testicular Torsion ◽  
Undescended Testis ◽  
Direct Component ◽  
Ectopic Testis

Cryptorchidism is a condition in which one or both testes have not passed down into the scrotal sac. It is categorized as true undescended testis in which testes are present in the normal path of descent, and as ectopic testis, in which testes are present at abnormal site. Common complications of cryptorchidism are testicular torsion, subfertility, inguinal hernia, and testicular cancer. Here we present a rare case of pantaloon hernia of obstructed indirect component and direct component with cryptorchidism.

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