scholarly journals Risk Measuring Model on Public Liability Fire and Empirical Study in China

2014 ◽  
Vol 9 (1) ◽  
pp. 35-41
Author(s):  
Guo-Xue Gu ◽  
◽  
Shang-Mei Zhao
Keyword(s):  
Risk Factors ◽  
Empirical Study ◽  
Linear Model ◽  
Generalized Linear Model ◽  
Gaussian Kernel ◽  
Favorable Effect ◽  
Public Places ◽  
Fire Insurance ◽  
In Fire

Public fire insurance has recently appeared in China. The basis for calculating the premium is the accurate measurement of Publicliability risk in fire. The generalized linear model (GLM) is widely used for measuring this risk in practice, but the GLM often cannot be satisfied, especially in fat-tailed distribution. A nonparametric Gaussian kernel linear model used to improve the GLM is applied to measure publicliability risk in fire, yielding a favorable effect. Results show three major risk factors that were measured precisely – the nature of the industry, the scale of public places and the level of fire precaution.

An Empirical Study of Generalized Linear Model for Count Data

2015 ◽  
Vol 04 (05) ◽  
Author(s):  
Muritala Abdulkabir Udokang Anietie ◽  
Edem Raji Surajudeen ◽  
Tunde Bello Latifat Kemi
Keyword(s):  
Empirical Study ◽  
Linear Model ◽  
Count Data ◽  
Generalized Linear Model

scholarly journals PSIII-3 Effect of Day of Induction on Sow and Piglet Performance

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 232-232
Author(s):  
Miranda R McGuire ◽  
Jenelle Dunckelberger ◽  
John Eggert ◽  
Allan P Schinckel ◽  
Egbert Knol
Keyword(s):  
Linear Model ◽  
Logit Model ◽  
Early Life ◽  
Generalized Linear Model ◽  
Removal Rate ◽  
Management Tool ◽  
Favorable Effect ◽  
Gestation Length ◽  
Biological Processes ◽  
Weaning Weight

Abstract Induction can be a useful herd management tool. However, inducing too early can negatively impact critical biological processes for the sow and her piglets. Although inducing at 115 d of gestation is widely accepted for commercial sows, the natural gestation length of purebred lines can exceed 115 days. Therefore, the objective of this study was to estimate the effect of induction at 115 vs. 117 d of gestation on the performance of purebred sows and their piglets. Purebred Landrace females from a commercial multiplier were used for this study. Sows were mated to one of the following genetic lines: A, B, or C. Of the 601 sows placed on test, 264 and 135 sows farrowed as a result of induction at 115 or 117 days of gestation, respectively. From these 399 sows, piglets sired by line C (n=1,715) were used for subsequent analyses. Traits of the sow analyzed included: percent stillborn, sow mortality (from 0 to 24 days post-farrowing), and removal rate (between farrowing and weaning). Traits of the piglet analyzed included: weaning weight, lactation ADG, and pre-weaning mortality. All traits were analyzed using a generalized linear model, except for mortality and removal rate, which were analyzed using a LOGIT model. Piglets from the 117 group had significantly greater weaning weight (P=0.02), significantly greater ADG (P=0.0009), and numerically lower pre-weaning mortality (P=0.16) than piglets from the 115 group. Sows induced at 117 days of gestation had numerically lower percent stillborn, lower mortality, and lower removal rate than sows induced at 115 days of gestation, although not significant (P=0.13, P=0.48, and P=0.50, respectively). In conclusion, there was a numerically or significantly favorable effect of inducing sows at 117 vs. 115 d of gestation on both sow performance and early-life piglet performance.

scholarly journals Health Risks of Structural Firefighters from Exposure to Polycyclic Aromatic Hydrocarbons: A Systematic Review and Meta-Analysis

2021 ◽  
Vol 18 (8) ◽  
pp. 4209
Author(s):  
Jooyeon Hwang ◽  
Chao Xu ◽  
Robert J. Agnew ◽  
Shari Clifton ◽  
Tara R. Malone
Keyword(s):  
Risk Factors ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Meta Analysis ◽  
Occupational Exposures ◽  
Fire Smoke ◽  
Polycyclic Aromatic ◽  
Pah Exposure ◽  
In Fire ◽  
Risk Of Cancer

Firefighters have an elevated risk of cancer, which is suspected to be caused by occupational and environmental exposure to fire smoke. Among many substances from fire smoke contaminants, one potential source of toxic exposure is polycyclic aromatic hydrocarbons (PAH). The goal of this paper is to identify the association between PAH exposure levels and contributing risk factors to derive best estimates of the effects of exposure on structural firefighters’ working environment in fire. We surveyed four databases (Embase, Medline, Scopus, and Web of Science) for this systematic literature review. Generic inverse variance method for random effects meta-analysis was applied for two exposure routes—dermal and inhalation. In dermal, the neck showed the highest dermal exposure increased after the fire activity. In inhalation, the meta-regression confirmed statistically significant increases in PAH concentrations for longer durations. We also summarized the scientific knowledge on occupational exposures to PAH in fire suppression activities. More research into uncontrolled emergency fires is needed with regard to newer chemical classes of fire smoke retardant and occupational exposure pathways. Evidence-based PAH exposure assessments are critical for determining exposure–dose relationships in large epidemiological studies of occupational risk factors.

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