Design and characterization of a compact multi-detector array for studies of induced gamma emission: Spontaneous decay of 178m2Hf as a test case

2006 ◽  
Vol 565 (2) ◽  
pp. 657-676 ◽  
Author(s):  
P. Ugorowski ◽  
R. Propri ◽  
S.A. Karamian ◽  
D. Gohlke ◽  
J. Lazich ◽  
...  
Keyword(s):  
Spontaneous Decay ◽  
Detector Array ◽  
Test Case ◽  
Gamma Emission ◽  
Induced Gamma Emission

Characterization of a 32-element linear self-mixing detector array for an FM/cw ladar

2002 ◽  
Author(s):  
William C. Ruff ◽  
Keith Aliberti ◽  
Mark M. Giza ◽  
Paul H. Shen ◽  
Barry L. Stann ◽  
...  
Keyword(s):  
Detector Array

Characterization of Fine-Pixel X-Ray Imaging Detector Array Fabricated by Using Thick Single-Crystal CdTe Layers on Si Substrates Grown by MOVPE

2019 ◽  
Vol 66 (1) ◽  
pp. 518-523
Author(s):  
Madan Niraula ◽  
Kazuhito Yasuda ◽  
Shintaro Tsubota ◽  
Taiki Yamaguchi ◽  
Junya Ozawa ◽  
...  
Keyword(s):  
Single Crystal ◽  
Detector Array ◽  
X Ray ◽  
Si Substrates ◽  
X Ray Imaging ◽  
Imaging Detector

COMPACT OPTICAL CHARACTERIZATION PLATFORM FOR DETECTION OF BIO-MOLECULES IN FLUIDIC AND AEROSOL SAMPLES

2008 ◽  
Vol 18 (01) ◽  
pp. 99-108
Author(s):  
PETER KIESEL ◽  
OLIVER SCHMIDT ◽  
MICHAEL BASSLER ◽  
NOBLE JOHNSON
Keyword(s):  
Optical Characterization ◽  
Detector Array ◽  
Band Pass Filter ◽  
Fluidic Channel ◽  
Pass Filter ◽  
Excitation Light ◽  
Chip Size ◽  
Dependent Signal ◽  
Band Pass

An optical characterization unit based on fluorescence spectroscopy-on-a-chip is described. It comprises a compact fluidic platform that is integrated onto a chip-size spectrometer. The analyte is continuously excited within a novel waveguide. Fluorescence spectra are recorded as the analyte traverse the detection area. In order to achieve a strong interaction between excitation light and analyte we use an anti-resonant waveguide, in which the light is guided within the target-containing medium, thereby enabling a continuous excitation of a large volume. The excitation light is guided in the lower-refractive-index fluid when the light is coupled into the waveguide at an appropriate angle. Compact spectrometers can be integrated along the fluidic channel. The spectrometers are composed of a detector array which is coated with a linear variable band-pass filter. The filter converts the spectral fluorescence information into a spatially dependent signal that is analyzed by the detector array. These chip-size spectrometers are especially applicable for characterization of moving analytes.

The History of Meter

2012 ◽  
Author(s):  
Meredith Martin
Keyword(s):  
English Language ◽  
Test Case ◽  
Methodological Framework ◽  
Anglo Saxon ◽  
Gerard Manley Hopkins ◽  
English Poet ◽  
History Of ◽  
Material History ◽  
English Culture

This chapter sets out the book's historical and methodological framework. Despite the modernist characterization of Victorian tradition as unified and steadfast, the various approaches to Victorian meter in English histories, grammars, and metrical studies reveal ideologically charged histories of English culture, often presented as Roman or Anglo-Saxon. Gerard Manley Hopkins was himself a mediator between various metrical discourses and theories. As a Catholic priest who taught the classics and an English poet who attempted to valorize the material history of the English language in his syntax and through his use of sprung rhythm, Hopkins is a test case for the personal and national ideologies of English meter.

scholarly journals Physical characterization of 2020 AV2, the first known asteroid orbiting inside Venus orbit

2020 ◽  
Vol 496 (3) ◽  
pp. 3572-3581 ◽  
Author(s):  
M Popescu ◽  
J de León ◽  
C de la Fuente Marcos ◽  
O Vaduvescu ◽  
R de la Fuente Marcos ◽  
...  
Keyword(s):  
Spectral Band ◽  
Absolute Magnitude ◽  
High Energy ◽  
Test Case ◽  
Optical Telescope ◽  
Small Bodies ◽  
William Herschel ◽  
Near Earth Asteroids ◽  
Innermost Region

ABSTRACT The first known asteroid with the orbit inside that of Venus is 2020 AV2. This may be the largest member of a new population of small bodies with the aphelion smaller than 0.718 au, called Vatiras. The surface of 2020 AV2 is being constantly modified by the high temperature, by the strong solar wind irradiation that characterizes the innermost region of the Solar system, and by high-energy micrometeorite impacts. The study of its physical properties represents an extreme test-case for the science of near-Earth asteroids. Here, we report spectroscopic observations of 2020 AV2 in the 0.5–1.5-μm wavelength interval. These were performed with the Nordic Optical Telescope and the William Herschel Telescope. Based on the obtained spectra, we classify 2020 AV2 as a Sa-type asteroid. We estimate the diameter of this Vatira to be $1.50_{-0.65}^{+1.10}$ km by considering the average albedo of A-type and S-complex asteroids ($p_V=0.23_{-0.08}^{+0.11}$), and the absolute magnitude (H = 16.40 ± 0.78 mag). The wide spectral band around 1 μm shows the signature of an olivine-rich composition. The estimated band centre BIC = 1.08 ± 0.02 μm corresponds to a ferroan olivine mineralogy similar to that of brachinite meteorites.

FlakyLoc: Flakiness Localization for Reliable Test Suites in Web Applications

2020 ◽  
Author(s):  
Jesús Morán ◽  
Cristian Augusto ◽  
Antonia Bertolino ◽  
Claudio De La Riva ◽  
Javier Tuya
Keyword(s):  
Environmental Factors ◽  
Web Application ◽  
Web Applications ◽  
Test Case ◽  
Test Cases ◽  
Root Cause ◽  
Test Execution ◽  
Fine Grain ◽  
Asynchronous Communications

Web application testing is a great challenge due to the management of complex asynchronous communications, the concurrency between the clients-servers, and the heterogeneity of resources employed. It is difficult to ensure that a test case is re-running in the same conditions because it can be executed in undesirable ways according to several environmental factors that are not easy to fine-grain control such as network bottlenecks, memory issues or screen resolution. These environmental factors can cause flakiness, which occurs when the same test case sometimes obtains one test outcome and other times another outcome in the same application due to the execution of environmental factors. The tester usually stops relying on flaky test cases because their outcome varies during the re-executions. To fix and reduce the flakiness it is very important to locate and understand which environmental factors cause the flakiness. This paper is focused on the localization of the root cause of flakiness in web applications based on the characterization of the different environmental factors that are not controlled during testing. The root cause of flakiness is located by means of spectrum-based localization techniques that analyse the test execution under different combinations of the environmental factors that can trigger the flakiness. This technique is evaluated with an educational web platform called FullTeaching. As a result, our technique was able to locate automatically the root cause of flakiness and provide enough information to both understand it and fix it.

Growing a numeral system

Diachronica ◽  
2006 ◽  
Vol 23 (2) ◽  
pp. 259-288 ◽  
Author(s):  
Patience Epps
Keyword(s):  
Historical Development ◽  
Unusual Feature ◽  
Test Case ◽  
Upper Limit ◽  
The World

Numerals in many languages around the world can be argued to reflect a progressive build-up of historical stages (cf. Hurford 1987), each of which may also represent the synchronic upper limit of a numeral system in another language. This paper presents an intriguing test case of this claim by exploring the historical development of numerals in the languages of the Nadahup (Makú) family of the northwest Amazonian Vaupés region, in which the numeral strategies that can be inferred diachronically for one language are also represented synchronically in its sisters. The paper also demonstrates that even the most basic of the Nadahup numerals have transparent etymologies (a cross-linguistically unusual feature suggestive of their relatively recent development), and that areal diffusion contributed to the expansion of the systems, supporting the characterization of the Vaupés as a linguistic area.

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