Research and exploration of coal enterprise management-control model in subsidiary view
2016 13TH INTERNATIONAL CONFERENCE ON SERVICE SYSTEMS AND SERVICE MANAGEMENT
Authors: Han Yue; Dai Yi-yun
Abstract
Promote the merger and reorganization of coal enterprises and improving coal industry concentration is currently the main development trend of coal enterprises in China. However, with the control problems are increasing. At present, the scholars often research and exploration Of coal enterprise management-control model in subsidiary view. This article combines with CCNH case to analyze main problems of coal enterprise management-control model in subsidiary view. Secondly, on the basis of the previous scholars study, the article build double-dimension subsidiary roles model through strategic importance and their own ability including four kinds of subsidiary: the leading subsidiary, developing subsidiary, contributing subsidiary and pioneering subsidiary. through analysis of specific cases CCNH coal company to match its four subsidiary, it provide evidence for different subsidiary for different control models according to subsidiary role model, so as to provide new ideas to solve control problems of coal enterprises
Nucleotide excision repair gene polymorphisms and risk of advanced colorectal adenoma: XPC polymorphisms modify smoking-related risk
CANCER EPIDEMIOLOGY BIOMARKERS & PREVENTION
Authors: Huang, WY; Berndt, SI; Kang, D; Chatterjee, N; Chanock, SJ; Yeager, M; Welch, R; Bresalier, RS; Weissfeld, JL; Hayes, RB
Abstract
Objectives: Nucleotide excision repair enzymes remove bulky damage caused by environmental agents, including carcinogenic polycyclic aromatic hydrocarbons found in cigarette smoke, a risk factor for colorectal adenoma. Among participants randomized to the screening arm of the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial, we studied the risk of advanced colorectal adenoma in relation to cigarette smoking and selected single nucleotide polymorphisms (SNP) in the nucleotide excision repair pathway. Methods: Cases (n = 772) were subjects with left-sided advanced adenoma (> 1 cm in size, high-grade dysplasia, or villous characteristics). Controls (n = 777) were screen-negative for left-sided polyps by sigmoidoscopy. DNA was extracted from blood samples and 15 common nonsynonymous SNPs in seven-nucleotide excision repair genes [XPC, RAD23B (WR23B), CSB (ERCC6), XPD (ERCC2), CCNH, XPF (ERCC4), and XPG (ERCC5)] were genotyped. Results: None of the studied SNPs were independently associated with advanced adenoma risk. Smoking was related to adenoma risk and XPC polymorphisms ((R)492(H), (A)499(V), (K)939(Q)) modified these effects (P-interaction from 0.03-0.003). Although the three XPC variants were in linkage disequilibrium, a multivariate logistic regression tended to show independent protective effects for XPC 499v (P-trend = 0.06), a finding supported by haplotype analysis (covariate-adjusted global permutation P = 0.03). Conclusions: Examining a spectrum of polymorphic variants in nucleotide excision repair genes, we found evidence that smoking-associated risks for advanced colorectal adenoma are modified by polymorphisms in XPC, particularly haplotypes containing XPC 499(V).