Potential impact of ANSI Z10 and CSA Z1000 on reducing electric shock and arc flash injuries

2009 ◽  
Author(s):  
H. Landis Floyd
Keyword(s):  
Electric Shock ◽  
Potential Impact ◽  
Arc Flash

Protective Devices Maintenance and the Potential Impact on Arc Flash Energy

2012 ◽  
Author(s):  
Dennis K. Neitzel
Keyword(s):  
Electrical Equipment ◽  
Electrical Safety ◽  
Protective Devices ◽  
Potential Impact ◽  
Arc Flash ◽  
Safety Considerations ◽  
Insight Into

This paper provides insight into the electrical safety considerations, specifically as it relates to maintenance of electrical overcurrent protective devices, and the potential impact on the arc flash energy for shipboard electrical equipment and systems application. It provides valuable information for the electricians, technicians, and engineers who operate and maintain the electrical equipment.

Arc flash macular hole

2020 ◽  
pp. 112067212097623
Author(s):  
Ruminder Kaur ◽  
Prateek Koul
Keyword(s):  
Laser Beam ◽  
Macular Hole ◽  
Electric Shock ◽  
Light Exposure ◽  
Full Thickness ◽  
Bright Flash ◽  
Macular Holes ◽  
Full Thickness Macular Hole ◽  
History Of ◽  
Arc Flash

Macular holes are common. Lightening, direct electric shock induced and laser beam induced macular holes are though rare. Reporting a case of spark flashlight (Arc Flash) induced macular hole in an electrician, which has never been reported. A 19 year old male electrician by profession presented to our clinic with a history of exposure to a bright flash light from spark of wires while at work that led to decrease of vision in his both eyes. Examination revealed a full thickness macular hole in his right eye and loss of foveal photoreceptors in the left eye. Arc flash light exposure in electricians can lead to macular holes too adding a new entity to the already existing types of macular holes.

Mitigating Electric Shock and Arc-Flash Energy: A Total System Approach for Personnel and Equipment Protection

2012 ◽  
Vol 18 (3) ◽  
pp. 48-56 ◽  
Author(s):  
Daleep Mohla ◽  
Tim Driscoll ◽  
Paul Hamer ◽  
Sergio Panetta
Keyword(s):  
Electric Shock ◽  
System Approach ◽  
Total System ◽  
Arc Flash

Effects of Gender, Parental Role, and Time on Infant- and Adult-Directed Read and Spontaneous Speech

2019 ◽  
Vol 62 (11) ◽  
pp. 4001-4014
Author(s):  
Melanie Weirich ◽  
Adrian Simpson
Keyword(s):  
Parental Involvement ◽  
Gender Identity ◽  
Spontaneous Speech ◽  
First Year ◽  
Space Size ◽  
Vowel Space ◽  
Potential Impact ◽  
Phonetic Features ◽  
And Gender ◽  
Description Task

Purpose The study sets out to investigate inter- and intraspeaker variation in German infant-directed speech (IDS) and considers the potential impact that the factors gender, parental involvement, and speech material (read vs. spontaneous speech) may have. In addition, we analyze data from 3 time points prior to and after the birth of the child to examine potential changes in the features of IDS and, particularly also, of adult-directed speech (ADS). Here, the gender identity of a speaker is considered as an additional factor. Method IDS and ADS data from 34 participants (15 mothers, 19 fathers) is gathered by means of a reading and a picture description task. For IDS, 2 recordings were made when the baby was approximately 6 and 9 months old, respectively. For ADS, an additional recording was made before the baby was born. Phonetic analyses comprise mean fundamental frequency (f0), variation in f0, the 1st 2 formants measured in /i: ɛ a u:/, and the vowel space size. Moreover, social and behavioral data were gathered regarding parental involvement and gender identity. Results German IDS is characterized by an increase in mean f0, a larger variation in f0, vowel- and formant-specific differences, and a larger acoustic vowel space. No effect of gender or parental involvement was found. Also, the phonetic features of IDS were found in both spontaneous and read speech. Regarding ADS, changes in vowel space size in some of the fathers and in mean f0 in mothers were found. Conclusion Phonetic features of German IDS are robust with respect to the factors gender, parental involvement, speech material (read vs. spontaneous speech), and time. Some phonetic features of ADS changed within the child's first year depending on gender and parental involvement/gender identity. Thus, further research on IDS needs to address also potential changes in ADS.

Exploring the Potential Impact of Sentence-Level Comprehension and Sentence-Level Fluency on Deaf Students' Passage Comprehension

2020 ◽  
Vol 63 (7) ◽  
pp. 2281-2292
Author(s):  
Ying Zhao ◽  
Xinchun Wu ◽  
Hongjun Chen ◽  
Peng Sun ◽  
Ruibo Xie ◽  
...  
Keyword(s):  
Independent Predictor ◽  
Vocabulary Knowledge ◽  
Group Differences ◽  
Regression Analyses ◽  
Deaf Students ◽  
Mediating Role ◽  
Sentence Level ◽  
Mediating Mechanisms ◽  
Potential Impact ◽  
The Relationship

Purpose This exploratory study aimed to investigate the potential impact of sentence-level comprehension and sentence-level fluency on passage comprehension of deaf students in elementary school. Method A total of 159 deaf students, 65 students ( M age = 13.46 years) in Grades 3 and 4 and 94 students ( M age = 14.95 years) in Grades 5 and 6, were assessed for nonverbal intelligence, vocabulary knowledge, sentence-level comprehension, sentence-level fluency, and passage comprehension. Group differences were examined using t tests, whereas the predictive and mediating mechanisms were examined using regression modeling. Results The regression analyses showed that the effect of sentence-level comprehension on passage comprehension was not significant, whereas sentence-level fluency was an independent predictor in Grades 3–4. Sentence-level comprehension and fluency contributed significant variance to passage comprehension in Grades 5–6. Sentence-level fluency fully mediated the influence of sentence-level comprehension on passage comprehension in Grades 3–4, playing a partial mediating role in Grades 5–6. Conclusions The relative contributions of sentence-level comprehension and fluency to deaf students' passage comprehension varied, and sentence-level fluency mediated the relationship between sentence-level comprehension and passage comprehension.

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