Objective:To analyze the bibliometric indicators of Chinese Journal of Nautical Medicine and Hyperbaric Medicine from 2014 to 2018, so as to improve its academic level and influence. Methods:Based on the statistical data from the core edition of the Chinese S& T Journal Citation Reports and part of the data provided by Wanfang Database Journal Bibliometric Evaluation Center, the changes of bibliometric indicators of Chinese Journal of Nautical Medicine and Hyperbaric Medicine from 2014 to 2018 were analyzed, including the impact factor, the citation frequency, the immediacy index, the cited half-life, the amount of published papers, the ratio of funded papers, and the number of papers published by high impact authors. Results:Among the cited indicators of the journal from 2014 to 2018, the impact factor showed an increasing trend year by year, and the highest year was in 2018 (0.757); the lowest citation frequency was in 2014 (86 times), the highest one was in 2018 (148 times), and there was a slightly fluctuation of that from 2015 to 2017; the lowest immediacy index was in 2014 (0.055), the highest one was in 2017 (0.105), and there was a slight decrease in the immediacy index in 2018 compared with that in 2017; the cited half-life showed a decreasing trend year by year, with the highest in 2014 (6.4 years) and the lowest in 2018 (4.3 years); among the source indicators, the amount of published papers slightly fluctuated from 2014 to 2018, with the lowest in 2018 (129 articles) and the highest in 2015 (187 articles); the highest ratio of funded papers was in 2015 (38.0%, 71/187) and the lowest was in 2016 (19.8%, 34/172); from 2014 to 2018, the number of papers published by high impact authors decreased year by year, with the highest in 2014 and 2015 (both were 94 articles) and the lowest in 2018 (39 articles).Conclusion:The bibliometric indicators of Chinese Journal of Nautical Medicine and Hyperbaric Medicine from 2014 to 2018 are generally good, and the information output, academic influence and level of the journal are steadily improving. Yet, more active measures should be taken to maintain and improve the academic quality of papers published on the journal to increase its academic influence and international dissemination.

Objective:To analyze the bibliometric indicators of Chinese Journal of Nautical Medicine and Hyperbaric Medicine from 2014 to 2018, so as to improve its academic level and influence. Methods:Based on the statistical data from the core edition of the Chinese S& T Journal Citation Reports and part of the data provided by Wanfang Database Journal Bibliometric Evaluation Center, the changes of bibliometric indicators of Chinese Journal of Nautical Medicine and Hyperbaric Medicine from 2014 to 2018 were analyzed, including the impact factor, the citation frequency, the immediacy index, the cited half-life, the amount of published papers, the ratio of funded papers, and the number of papers published by high impact authors. Results:Among the cited indicators of the journal from 2014 to 2018, the impact factor showed an increasing trend year by year, and the highest year was in 2018 (0.757); the lowest citation frequency was in 2014 (86 times), the highest one was in 2018 (148 times), and there was a slightly fluctuation of that from 2015 to 2017; the lowest immediacy index was in 2014 (0.055), the highest one was in 2017 (0.105), and there was a slight decrease in the immediacy index in 2018 compared with that in 2017; the cited half-life showed a decreasing trend year by year, with the highest in 2014 (6.4 years) and the lowest in 2018 (4.3 years); among the source indicators, the amount of published papers slightly fluctuated from 2014 to 2018, with the lowest in 2018 (129 articles) and the highest in 2015 (187 articles); the highest ratio of funded papers was in 2015 (38.0%, 71/187) and the lowest was in 2016 (19.8%, 34/172); from 2014 to 2018, the number of papers published by high impact authors decreased year by year, with the highest in 2014 and 2015 (both were 94 articles) and the lowest in 2018 (39 articles).Conclusion:The bibliometric indicators of Chinese Journal of Nautical Medicine and Hyperbaric Medicine from 2014 to 2018 are generally good, and the information output, academic influence and level of the journal are steadily improving. Yet, more active measures should be taken to maintain and improve the academic quality of papers published on the journal to increase its academic influence and international dissemination.

Objective: To determine the personal dose level of radiation workers in medical institutions at the municipal level and below in a city, and to provide a scientific support for strengthening the radiation protection in the city’s medical institutions. Methods: Information of the successful applicants for the "Radiation Worker Permit" from 174 medical institutions at the municipal level and below was collected from October 1, 2011 to December 31, 2014. The annual effective dose was calculated based on the personal dose monitoring report, and indicators including sex, permit application time, hospital level, type of occupational radiation, length of radiation work, blood test, and micronucleated lymphocyte rate were analyzed. Results: Of the 1 143 radiation worker permit applications submitted by medical institutions the municipal level and below in this city from 2011 to 2014, 1 123 provided at least one personal dose monitoring report. The annual effective dose of the radiation workers was 0-4.76 mSv (mean 0.31±0.40 mSv) , and the collective annual effective dose was 351.96 mSv. The annual effective dose was significantly different between radiation workers with different times of permit application, hospital levels, and types of occupational radiation (P<0.05) . Interventional radiology workers had the highest annual effective dose (0.63 mSv) , and annual effective dose was significantly different between interventional radiology workers with different lengths of radiation work (H=10.812, P<0.05) . Conclusion The personal radiation dose of radiation workers in medical institutions at the municipal level and below in this city is maintained at a relatively low level, suggesting that the occupational environment is relatively safe for these workers. However, more focus should be placed on clinical interventional radiology workers.

OBJECTIVETo study the incidence and influencing factors of psychological violence among college students in Guangzhou in 2010.

METHODSConvenience sampling method was used and 2 200 college students from 61 classes of three universities in Guangzhou were interviewed with self-designed questionnaire about the incidence and influencing factors of the psychological violence in 2010. The valid sample was 2 060. Chi-square test and multinomial logistic regression were used to assess the incidence and influencing factors of the psychological violence between different genders.

RESULTSA total of 66.3% (1 365/2 060) college students reported having experienced at least one kind of psychological violence during the past 12 months, either as a perpetrator or as a victim. The proportion of psychological violence among males (72.3%, 775/1 072) was significantly higher than that in females (59.7%, 590/988)(χ(2) = 36.39, P < 0.05). The incidence of perpetration only, victimization only, and both perpetration and victimization of psychological violence were 16.1% (331/2 060), 8.9% (184/2 060) and 41.3% (850/2 060), respectively. The incidence of victimization only in females was 10.4% (103/988), which was significantly higher than that in males (7.6%, 81/1 072) (χ(2) = 5.20, P < 0.05). The incidence of both perpetration and victimization in males was 47.3% (507/1 072), which was significantly higher than that in females (34.7%, 343/988) (χ(2) = 33.56, P < 0.05). In males, the multinomial logistic regression showed the risk factors for perpetration only was having harmful behavior habits (OR = 1.90). For victimization only, the risk factors were with siblings (OR = 2.42) and prior mistreatment by teachers from primary to senior high school (OR = 1.78). For both perpetration and victimization, the risk factors were with siblings (OR = 1.88), having harmful behavior habits (OR = 1.98), bad family economic conditions (difficult OR = 1.99, general OR = 1.67) and prior mistreatment by teachers from primary to senior high school(OR = 2.07). In females, the risk factors for perpetration only were self-claimed shortage of monthly living expenses(OR = 2.14) or just enough (OR = 2.26), having harmful behavior habits (OR = 1.69) (all P values<0.05) . For victimization only, the risk factors were bad family economic conditions (difficult OR = 6.67, 15 persons; general OR = 3.81), bullied by others before university(OR = 2.05). For both perpetration and victimization, the risk factors were self-claimed shortage of monthly living expenses (OR = 1.81), bad family economic conditions (OR = 2.43), disharmonious relations between parents (OR = 1.76), physical punishment by parents (OR = 1.66), bullied by others before university (OR = 2.14) and prior mistreatment by teachers from primary to senior high school(OR = 1.73). Having a religious faith was the protective factor (OR = 0.38) (all P values<0.05).

CONCLUSIONThe incidence of psychological violence among college students is very serious in Guangzhou in 2010. And the influencing factors of it between different genders are different. Females are affected by a wider ranges of factors than males, and are more influenced by family and parents.

Adolescent ; Aggression ; classification ; psychology ; Family ; psychology ; Female ; Humans ; Incidence ; Logistic Models ; Male ; Risk Factors ; Sex Factors ; Stress, Psychological ; epidemiology ; Students ; Surveys and Questionnaires ; Universities