scholarly journals Measurement of Bangudae Rock Joint Using Non-adhesive, Non-contact Inclinometer Slope Laser Measuring System

2021 ◽  
Vol 37 (6) ◽  
pp. 617-625
Author(s):  
Jae Hyun Kim ◽  
Sang Ok Lee ◽  
Kwang Yong Chung ◽  
Min Su Han
Keyword(s):  
Optical Fiber ◽  
Rock Joint ◽  
Measuring System ◽  
Measuring Instrument ◽  
Contact Type ◽  
Short Period ◽  
Cultural Properties ◽  
The Future ◽  
Yangsan Fault ◽  
Provincial Park

Daegokcheon Stream in Daegok-ri, Ulju-gun, is an area with a developed valley and bedrock from Gajisan Provincial Park to the confluence of the Taehwa River across the Yangsan Fault. To measure the rock of Bangudae petroglyphs, the mineralogical weathering, joints, and scours or cavities at the bottom were confirmed. The measurement was carried out for a short period of time on the joint of the bedrock on which the Bangudae petroglyphs were engraved. Compared to the measured value obtained using existing optical fiber (Ch4 150 µm), a displacement value of 300 µm was obtained using the non-attached, non-contact type of measuring instrument. In the future, it is inferred that this instrument could be used for various cultural properties if the HSV-value suitable for illuminance and various measurement experiences are stored.

China, the UN, and Human Protection

2020 ◽  
Author(s):  
Rosemary Foot
Keyword(s):  
United Nations ◽  
Public Goods ◽  
World Order ◽  
Active Engagement ◽  
Fair Share ◽  
Global Order ◽  
The Core ◽  
Short Period ◽  
The Future ◽  
The United Nations

Over a relatively short period of time, Beijing moved from passive involvement with the UN to active engagement. How are we to make sense of the People’s Republic of China’s (PRC) embrace of the UN, and what does its engagement mean in larger terms? Is it a ‘supporter’ that takes its fair share of responsibilities, or a ‘spoiler’ that seeks to transform the UN’s contribution to world order? Certainly, it is difficult to label it a ‘shirker’ in the last decade or more, given Beijing’s apparent appreciation of the UN, its provision of public goods to the organization, and its stated desire to offer ‘Chinese wisdom and a Chinese approach to solving the problems facing mankind’. This study traces questions such as these, interrogating the value of such categorization through direct focus on Beijing’s involvement in one of the most contentious areas of UN activity—human protection—contentious because the norm of human protection tips the balance away from the UN’s Westphalian state-based profile, towards the provision of greater protection for the security of individuals and their individual liberties. The argument that follows shows that, as an ever-more crucial actor within the United Nations, Beijing’s rhetoric and some of its practices are playing an increasingly important role in determining how this norm is articulated and interpreted. In some cases, the PRC is also influencing how these ideas of human protection are implemented. At stake in the questions this book tackles is both how we understand the PRC as a participant in shaping global order, and the future of some of the core norms that constitute global order.

Supercooling Points of Adult Dermacentor variabilis (Acari: Ixodidae) From a Population Near the Northern Distribution Limit

2020 ◽  
Author(s):  
Matthew E M Yunik ◽  
Neil B Chilton
Keyword(s):  
Cold Hardiness ◽  
Dermacentor Variabilis ◽  
Subzero Temperatures ◽  
Host Seeking ◽  
Short Period ◽  
Significant Difference ◽  
Northern Distribution ◽  
Dog Tick ◽  
Provincial Park ◽  
Established Population

Abstract The northern distributional limit of Dermacentor variabilis Say, the American dog tick, is expanding in Saskatchewan and Manitoba (western Canada). The ability of D. variabilis to continue to expand its range northwards will depend upon the ability of individuals within populations at the species distributional edge to withstand very low temperatures during winter. One component of cold hardiness is the supercooling point (SCP), the temperature below 0°C at which an individual freezes. In this study, the SCP was determined for 94 questing D. variabilis adults (44 females and 50 males) from an established population near Blackstrap Provincial Park in Saskatchewan. SCP values ranged from −18.2 to −6.7°C, with a median of −13.3°C. This suggests that host-seeking D. variabilis adults differ in their ability to survive exposure to subzero temperatures, for at least a short period of time, without freezing. The distribution of SCPs was bimodal, but there was no significant difference in SCP values between female and male ticks, and no relationship between SCP and tick body weight. It remains to be determined what factors contribute to the variation in SCP values among questing D. variabilis adults.

scholarly journals On the 2PN Pericentre Precession in the General Theory of Relativity and the Recently Discovered Fast-Orbiting S-Stars in Sgr A*

Universe ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 37
Author(s):  
Lorenzo Iorio
Keyword(s):  
General Theory ◽  
Present Author ◽  
Theory Of Relativity ◽  
General Theory Of Relativity ◽  
Orbital Elements ◽  
Analytical Expression ◽  
Potential Interest ◽  
Short Period ◽  
The Future ◽  
Sgr A

Recently, the secular pericentre precession was analytically computed to the second post-Newtonian (2PN) order by the present author with the Gauss equations in terms of the osculating Keplerian orbital elements in order to obtain closer contact with the observations in astronomical and astrophysical scenarios of potential interest. A discrepancy in previous results from other authors was found. Moreover, some of such findings by the same authors were deemed as mutually inconsistent. In this paper, it is demonstrated that, in fact, some calculation errors plagued the most recent calculations by the present author. They are explicitly disclosed and corrected. As a result, all of the examined approaches mutually agree, yielding the same analytical expression for the total 2PN pericentre precession once the appropriate conversions from the adopted parameterisations are made. It is also shown that, in the future, it may become measurable, at least in principle, for some of the recently discovered short-period S-stars in Sgr A*, such as S62 and S4714.

Impact of Human Factors on Measurement Errors

2013 ◽  
pp. 274-291 ◽  
Author(s):  
Vinodkumar Jacob ◽  
M. Bhasi ◽  
R. Gopikakumari
Keyword(s):  
Experimental Study ◽  
Statistical Analysis ◽  
Measurement Error ◽  
Measurement Errors ◽  
Human Error ◽  
Quantitative Comparison ◽  
Measuring System ◽  
Measuring Instrument ◽  
Related Factors ◽  
Human Errors

Measurement is the act or the result, of a quantitative comparison between a given quantity and a quantity of the same kind chosen as a unit. It is for observing and testing scientific and technological investigations and generally agreed that all measurements contain errors. In a measuring system where both a measuring instrument and a human being taking the measurement using a preset process, the measurement error could be due to the instrument, the process or human error. This study is devoted to understanding the human errors in measurement. Work and human involvement related factors that could affect measurement errors have been identified. An experimental study has been conducted using different subjects where the factors were changed one at a time and the measurements made by them recorded. Errors in measurement were then calculated and the data so obtained was subject to statistical analysis to draw conclusions regarding the influence of different factors on human errors in measurement. The findings are presented in the paper.

scholarly journals Cloud Effective Emissivity Retrievals Using Combined Ground-Based Infrared Cloud Measuring Instrument and Ceilometer Observations

2018 ◽  
Vol 10 (12) ◽  
pp. 2033
Author(s):  
Lei Liu ◽  
Ting Zhang ◽  
Yi Wu ◽  
Zhencong Niu ◽  
Qi Wang
Keyword(s):  
Measuring System ◽  
Measuring Instrument ◽  
Effective Emissivity ◽  
Retrieval Method ◽  
Clear Sky ◽  
Inversion Procedure ◽  
The Mean ◽  
And Performance ◽  
Emissivity Measurements ◽  
Good Agreement

In this paper, a new inversion procedure for cloud effective emissivity retrievals using a combined ground-based infrared cloud measuring instrument with ceilometer was developed. A quantitative sensitivity and performance analysis of the proposed method was also provided. It was found that the uncertainty of the derived effective emissivity was mainly associated with errors on the measurement radiance, the simulated radiance of clear sky and blackbody cloudy sky. Furthermore, the retrieval at low effective emissivity was most sensitive to the simulated clear sky radiances, whereas the blackbody cloudy sky radiance was the prevailing source of uncertainty at high emissivity. This newly proposed procedure was applied to the measurement taken in the CMA Beijing Observatory Station from November 2011 to June 2012 by the whole-sky infrared cloud-measuring system (WSIRCMS) and CYY-2B ceilometer. The cloud effective emissivity measurements were in good agreement with that of the MODIS/AQUA MYD06 Collection 6 (C6) cloud products. The mean difference between them was 0.03, with a linear correlation coefficient of 0.71. The results demonstrate that the retrieval method is robust and reliable.

Design of Width Measuring Instrument for Needle Roller Bearing without Inner Ring

2012 ◽  
Vol 468-471 ◽  
pp. 907-910
Author(s):  
Qi Deng ◽  
Ren Jie Zhang
Keyword(s):  
Roller Bearing ◽  
Measuring System ◽  
Computer Interface ◽  
Displacement Sensor ◽  
Human Computer Interface ◽  
Measuring Instrument ◽  
Voltage Output

Design of width measuring instrument for drawn cup bearing without inner ring.The instrument used inductive displacement sensor converting width variation into voltage output of sensor. The measuring system which used AT89S52 as control chip excellently adapted to the requirment of fast production beat and the human-computer interface was developed by using VB. The instrument was practical that can accurately measure width of the bearing, and meet the production requirment.

scholarly journals Development of a Micro Hole Measuring System Using an Optical Fiber Probe (1st Report)

2009 ◽  
Vol 75 (12) ◽  
pp. 1476-1481 ◽  
Author(s):  
Hiroshi MURAKAMI ◽  
Akio KATSUKI ◽  
Hiromichi ONIKURA ◽  
Takao SAJIMA ◽  
Eiji KONDO
Keyword(s):  
Optical Fiber ◽  
Measuring System ◽  
Fiber Probe ◽  
Optical Fiber Probe ◽  
Micro Hole

Discovering the atmospheres of hot Jupiters

2019 ◽  
Vol 15 (S354) ◽  
pp. 467-472
Author(s):  
P. Wilson Cauley
Keyword(s):  
Detailed Characterization ◽  
Hot Jupiters ◽  
Short Period ◽  
The Future ◽  
To Come ◽  
Host Stars

AbstractHot Jupiters are an extraordinary class of exoplanets, orbiting their host stars with periods of hours to a few days. Some of these objects have day-side temperatures approaching photospheric temperatures of late K-type stars. I will give an overview of how we characterize the atmospheres of these fascinating objects and some the more recent exciting results to come from ground and space-based telescopes, as well as what the future holds for detailed characterization of short-period exoplanet atmospheres.

Multi-Axis Controlled Ultraprecision Machining and Measurement

2009 ◽  
Vol 3 (3) ◽  
pp. 227-232 ◽  
Author(s):  
Hirofumi Suzuki ◽  
Keyword(s):  
Ultrasonic Vibration ◽  
Measuring System ◽  
Precision Machining ◽  
Ultraprecision Machining ◽  
Optical Components ◽  
Contact Type ◽  
Digital Devices ◽  
Ultra Precision ◽  
Micro Lens Array ◽  
Micro Lens

Demands of micro aspheric optical components such as lenses and mirrors are increasing for installing to the digital devices. As the devices become to be more compact and complicated, the molds shapes of lens and mirrors would become more difficult to be machined and measured. In this study, multi-axis controlled ultra precision machining/grinding and on-machine measurement technologies are developed for manufacturing of the complicated and micro molds. In this paper, the next four technologies are focused: (1) micro fresnel grinding, (2) Micro lens array grinding, (3) Ultrasonic vibration assisted polishing, and (4) Contact type of multi axis controlled on-machine measuring system.

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