• 한국산업보건학회지
• /
• 제29권3호
• /
• pp.298-309
• /
• 2019

Objectives: This study aimed to investigate stages of safety and health culture change through a reflection on 40 years of hearing conservation history at a multinational company. Methods: The target workplaces were multinational companies with more than 1,000 employees. The research used the clinical case study and system analysis methods based on direct observation of the research from 1994 to 2009. The latter method performed an analysis of the equilibrium state of the cross-section in the given period and the longitudinal profile of the change during the given period. Results: The stages of cultural change are divided into five stages and summarized as follows. In the first stage, workplace noise was not widely recognized as a hazard, while in the second stage, the measurement of noise levels and audiometric testing were conducted under the Korean Occupational Safety and Health Act (KOSHA). The driving force for change in the second stage was the amendment of the KOSHA. In the third stage, noise came to be recognized as a hazard factor through awareness training. The driving force of change during the third stage was the strong executive power exerted by the audit of the industrial hygiene program from the US head office. In the fourth step, there was a change to actually reduce noise. The driving force in this stage was a change in company executives' risk perception resulting from lawsuits over noise-induced hearing loss and the task force team activities for culture change based on the action learning protocol. At the fifth stage, a 'buy quiet policy' was institutionalized. The management's experience that noise reduction was difficult was the motivation to manage noise from the time of purchase of equipment. Conclusions: The activities of a hearing conservation program are determined by the improvement of the legal system and by the way it is enforced. Noise control activities to reduce noise areas may be possible through the shared risk perception of noise-induced hearing loss and by a change agent role as a facilitator to implement noise control.

• 시큐리티연구
• /
• 제57호
• /
• pp.111-135
• /
• 2018

카지노 기업에서는 종사원들을 대상으로 조직목표 달성을 위해 업무시간 내내 실제로 자신이 느끼는 감정을 속이거나 표면적인 감정으로 고객을 대하도록 강요하고 이로 인해 직무스트레스가 높아지며 직무만족 및 이직의도에 영향을 미치는 경우가 있다. 그러나 인적 경영에 있어 직무만족과 이직의도 요인은 조직 유효성과 연관이 있어 장기적으로 기업의 이윤을 극대화시킬 수 있는 요인이기 때문에 지속적인 관리가 필요하다. 따라서 본 연구에서는 카지노 보안 및 고객접점 의전 종사자들의 감정노동에 따라 증가하는 직무스트레스가 종사원들의 직무만족 및 이직의도에 얼마나 많은 영향을 미치는지 영향력 및 인과관계를 규명한 결과 감정노동과 직무만족과 이직의도와의 관계에서 직무스트레스가 매개 효과를 가지고 있음을 확인하였다. 연구결과를 바탕으로 직무교육뿐만 아니라 감정조절능력, 공감능력, 대인관계 기술 등 감성리더십 및 감성지능 교육을 실시 및 강화하여 감정노동에 따른 직무스트레스를 해결할 수 있도록 하고 카지노 종사원이 직무를 수행함에 있어 개인의 능력을 충분히 발휘하고 긍정적 감정 상태를 유지할 수 있도록 자기존중감 프로그램을 설계하여 자기효능감을 향상시켜야 한다고 개선방안을 제시하였다.

• 임상간호연구
• /
• 제25권2호
• /
• pp.120-132
• /
• 2019

Purpose: This study aimed to investigate the performance of patient engagement nursing services perceived by nurses and necessity in Korea. Methods: This study was a descriptive research. A total of 205 nurses participated in the study. The Smart Patient Engagement Assessment Checklist was developed by the investigators to assess patient engagement nursing services performance and necessity. The data were collected using online survey. Descriptive analysis and $x^2$ analysis were performed using SPSS 25.0 program. Results: The mean age of participants was $36.6{\pm}8.5years$ and the mean working experience was $12.92{\pm}9.23years$. Seventy eight percent of participants reported that patients and family participated in care as advisors through customer's suggestion or patient satisfaction assessment. The rate of patients' and family's engagement in care as advisors was significantly higher in tertiary hospitals ($x^2=28.54$, p<.001). About 89% of participants communicated with patients and family to make clinical decisions with a multidisciplinary approach. The rate of communication for multidisciplinary decision making was significantly higher in tertiary hospitals ($x^2=6.30$, p=.012). With regards to nurses' bedside patient handoff, 22.0% of participants reported that they were performing bedside patient handoff, and there was no significant difference between type of hospitals. About discharge planning, 72.2% of participants reported utilizing discharge checklist. Conclusion: Currently, patient engagement nursing services are applied partially in Korea. It seems that care protocols to be applied for patient engagement nursing services are insufficient. Therefore, patient engagement care protocols need to be developed to improve patient's health outcome and safety.

• 한국산학기술학회논문지
• /
• 제20권9호
• /
• pp.111-120
• /
• 2019

본 연구는 서비스직 근로자의 개인-직무 적합성과 직무만족 간의 관계에서 조직후원인식의 매개효과를 규명하고자 하였다. 이를 위하여 개인-직무 적합성, 직무만족, 조직후원인식에 대한 선행연구를 기반으로 연구모형을 설정하고 가설을 도출하였다. 특히, 조직후원인식은 정서적 조직후원인식과 수단적 조직후원인식으로 세분화하였다. 본 연구를 위하여 국내 기업에서 서비스 직무를 담당하고 있는 근로자를 대상으로 설문 조사를 실시하였으며, 온라인으로 총 350명에게 배포되었으며, 최종 281명의 응답 결과를 분석하여, 유효 회수율은 80.3%를 기록하였다. 그 결과 첫째, 개인-직무적합성은 직무만족과 조직후원인식에 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 개인-직무 적합성과 직무만족간의 관계에서 조직후원인식의 하위요인 중 정서적 조직후원인식은 매개효과가 있는 나타났으나, 수단적 조직후원인식은 매개효과가 없는 것으로 나타났다. 본 연구결과를 바탕으로, 고객 점점에서 감정노동을 수행하는 서비스직 근로자의 개인-직무 적합성을 판단해 볼 수 있는 채용 제도의 변화, 조직 구성원의 정서적 지원체계 구축을 위한 조직 문화 및 인사제도 마련, 서비스직 근로자들의 직무만족을 높이기 위한 보상 및 인력개발 체계 구축 등 인사교육 전반에 걸친 이론적 및 실천적 시사점을 제시하였다.

• 중환자간호학회지
• /
• 제12권3호
• /
• pp.35-49
• /
• 2019

Purpose : This study aimed to propose a common scope of practice (SOP) for 13 specialties of Advanced Practice Nurses (APNs) in Korea. Methods : The first draft of a common SOP was extracted from domestic and international laws with a literature review by 17 experts from the Korean Association of Advanced Practice Nurses (KAAPN). Then, the common SOP was finalized after comparing the activities of APNs in clinical settings. Results : A total of 70 duties were identified and six categories were suggested for the common SOP. The SOP proposed by the KAAPN featured the following: 1) identification of and discrimination between health problems; 2) prescription and implementation of diagnostic tests; 3) treatment of injuries and diseases while implementing measures to prevent exacerbation; 4) prescription of medicinal products in line with 1) to 3); 5) referral and consultation; and 6) education and counseling. It was then confirmed that the proposed six categories in the common SOP reflected all the duties performed by APNs in clinical practice, including all 40 activities. Conclusion : The results of this study can be used as evidence for the legalization of a common SOP for APNs. Given the increasing multidisciplinary team approach adopted in Korean hospitals, it may be desirable to establish a broader SOP to reflect the diverse duties of APNs.

• Animal Bioscience
• /
• 제35권11호
• /
• pp.1698-1710
• /
• 2022

Objective: Raw potato starch (RPS) is resistant to digestion, escapes absorption, and is metabolized by intestinal microflora in the large intestine and acts as their energy source. In this study, we compared the effect of different concentrations of RPS on the intestinal bacterial community of weaned piglets. Methods: Male weaned piglets (25-days-old, 7.03±0.49 kg) were either fed a corn/soybean-based control diet (CON, n = 6) or two treatment diets supplemented with 5% RPS (RPS5, n = 4) or 10% RPS (RPS10, n = 4) for 20 days and their fecal samples were collected. The day 0 and 20 samples were analyzed using a 16S rRNA gene sequencing technology, followed by total genomic DNA extraction, library construction, and high-throughput sequencing. After statistical analysis, five phyla and 45 genera accounting for over 0.5% of the reads in any of the three groups were further analyzed. Furthermore, short-chain fatty acids (SCFAs) in the day 20 fecal samples were analyzed using gas chromatography. Results: Significant changes were not observed in the bacterial composition at the phylum level even after 20 d post feeding (dpf); however, the abundance of Intestinimonas and Barnesiella decreased in both RPS treatment groups compared to the CON group. Consumption of 5% RPS increased the abundance of Roseburia (p<0.05) and decreased the abundance of Clostridium (p<0.01) and Mediterraneibacter (p< 0.05). In contrast, consumption of 10% RPS increased the abundance of Olsenella (p<0.05) and decreased the abundance of Campylobacter (p<0.05), Kineothrix (p<0.05), Paraprevotella (p<0.05), and Vallitalea (p<0.05). Additionally, acetate (p<0.01), butyrate (p<0.05), valerate (p = 0.01), and total SCFAs (p = 0.01) were upregulated in the RPS5 treatment group Conclusion: Feeding 5% RPS altered bacterial community composition and promoted gut health in weaned piglets. Thus, resistant starch as a feed additive may prevent diarrhea in piglets during weaning.

• 대한본초학회지
• /
• 제29권2호
• /
• pp.7-13
• /
• 2014

Objectives : Chronic mild stress (CMS) model is currently recognized as a better animal model of depression. The purpose of this study was to investigate the antidepressant-like effects of the Nelumbo nucifera leave extract using CMS model. Methods : The antidepressant-like effects of Nelumbo nucifera leaves extract was determined by using animal models of depression. Male ICR mice were divided into four groups: saline-treated normal, without CMS; saline-treated stress control; CMS+ Imipramine(20mg/kg); CMS+Nelumbo nucifera leaves extract(200mg/kg). All mice except the normal group exposed an unpredicted sequence of chronic mild stressors for 5 weeks. The behavior of mice were detected by sucrose preference test, forced swim test and tail suspension test. Then concentration of corticosterone in serum was detected by enzyme immunoassay. Results : Nelumbo nucifera leaves extract administration by daily gavage from the 3rd week exhibited an antidepressant-like effect on CMS-induced depression in mice. Nelumbo nucifera leaves extract administration at dose of 200 mg/kg significantly increased the sucrose consumption, and decreased the immobility durations in forced swim test and tail suspension test. Furthermore the corticosterone level decreased than control group. Conclusions : Chronic mild stress can affect mouse behavior and corticosterone level and cause depression. The present experiments not only further confirm the antidepressant-like effects of Nelumbo nucifera leaves extract in the sucrose preference test, forced swimming test and tail suspension test, but also the improving effects of Nelumbo nucifera leaves extract on the depression-like symptoms in the CMS model. Nelumbo nucifera leaves extract has the antagonism on CMS and produce antidepressive effects.

• 대한본초학회지
• /
• 제29권3호
• /
• pp.11-17
• /
• 2014

Objective : Portulaca oleracea (PO) has been used as an important traditional medicine for inflammatory and bacterial diseases in East Asia. However, the protective effects of PO on acute pancreatitis (AP) is not well-known. Therefore, this study was performed to identify the anti-inflammatory and prophylactic effects of PO on cerulein-induced AP. Methods : AP was induced in mice via intraperitoneal injection of supramaximal concentrations of the stable cholecystokinin analogue cerulein ($50{\mu}g/kg$) given every hour for 6 times. Water extracts of PO (100, 300, or 500 mg/kg) was administrated intra-peritoneally 1 h prior to the first injection of cerulein. The mice were killed at 6 h after the final cerulein injection. Pancreas and lung were rapidly removed for morphologic and histochemical examination, myeloperoxidase (MPO) assay. Blood samples were taken to determine serum amylase and lipase activities. Results : Administration of PO significantly inhibited pancreatic weight/body weight ratio, pancreas and lung histological injury. And MPO activity which indicates neutrophil infiltration was inhibited by PO extracts on cerulein-induced pancreatitis. In addition, PO administration inhibited digestive enzymes such as serum amylase and lipase activity on cerulein-induced pancreatitis. Conclusion : Our results could suggest that pre-treatment of PO reduces the severity of cerulein-induced AP, thereby, PO could be used as a protective agent against AP. Also, this study could give a clinical basis that PO could be a drug or agent to prevent AP.

• 대한본초학회지
• /
• 제33권2호
• /
• pp.53-58
• /
• 2018

Objectives : Plantaginis asiaticae Folium (PA) has been widely used in Korean medicine for treatment of liver disease, stomach troubles and inflammation. We investigated the effect of PA on lipid accumulation in 3T3-L1 according to extraction conditions. Methods : The MTT assay was employed to evaluate the cytotoxicity of PA extracted by different solvents (water, 50% ethanol, and 95% ethanol) on 3T3-L1 preadipocytes. Oil red O staining was used to identify intracellular lipid accumulation in 3T3-L1. 3T3-L1 adipocytes were treated with PA at concentration ranging in 0.1, 0.2 and $0.4mg/m{\ell}$. PA was extracted by different extraction conditions such as extraction solvents, extraction time, and extraction temperature. In addition, UPLC analysis was used for determination of candidates of active ingredients in PA. Results : 3T3-L1 preadipocytes were treated with PA extracted by different solvents (water, 50% ethanol, and 95% ethanol) and there was no cytotoxicity. Oil red O staining was employed to identify the effect of PA on lipid accumulation in 3T3-L1. In the present study, PA water extraction at $70^{\circ}C$ for 6 hours decreased greatly in lipid accumulation. The range of concentrations was 0.1, 0.2 and $0.4mg/m{\ell}$. Concentration at $0.2mg/m{\ell}$ was the most effective one among them. Candidates of active ingredients in PA were shown plantamajoside and acteoside through UPLC. Conclusions : These results suggest that the effect of PA water extraction at $70^{\circ}C$ on lipid accumulation in 3T3-L1 is superior to other extraction conditions. We suppose that plantamajoside and acteoside may be candidates of active ingredients in PA.

• 한국결정성장학회지
• /
• 제32권4호
• /
• pp.136-142
• /
• 2022

Dy₂O₃ 첨가량에 따른 BaTiO₃의 결정구조, 입자성장 거동 및 유전특성에 대해 연구하였다. 고상합성법으로 (100-x) BaTiO₃-xDy₂O₃(mol%, x = 0, 0.5, 1.0, 2.0) 비율로 합성하고, 공기 중 1250℃에서 2시간 동안 소결하였다. Dy₂O₃가 첨가되면서 소결체의 결정구조는 정방정계 구조에서 입방정계 구조로 전이되어 tetragonality(c/a)가 감소하였다. 또한, Dy₂O₃가 첨가 시 Ba₁₂Dy_4.67Ti₈O₃₅은 이차상이 확인되었다. Dy₂O₃의 첨가량이 증가할수록 소결 후 평균입자의 크기가 감소하고 비정상 입자성장 거동을 보였다. 이를 통해 Dy₂O₃가 첨가된 BaTiO₃의 입자성장은 이차원 핵생성 및 성장에 의해 입자성장이 일어나고 계면 반응이 지배적인 것으로 판단할 수 있다. 또한, 결정구조 및 미세구조와 유전특성과의 상관관계에 대해서 고찰하였다.