• 공학교육연구
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• 제23권4호
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• pp.37-51
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• 2020

This study examined the differential effects of High-Impact Practices(HIPs) on the career aspiration of STEM college students by gender. Through the theoretical lens of Social Cognitive Career Theory(SCCT), a two-level model analysis was conducted. A sample of 2,101 third- and fourth-year undergraduate students majoring in STEM at 38 universities, which had been collected from the National Survey on College Student Experiences and Learning Outcomes funded by the Korea Research Foundation, was used. This study found that the three HIP domains(learning with peers, faculty support, content relevancy) had different influences depending on gender. These findings suggest that HIPs can benefit the development of female students' career aspiration and have gender-differential effects on students in STEM majors. Based on those findings, this study also deduced implications about the roles of faculty members and higher-education institutions that might foster the retention of women in STEM.

• Management Science and Financial Engineering
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• 제13권2호
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• pp.1-27
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• 2007

This paper presents a fuzzy-goal programming(FGP) approach for Bi-Level Linear Multiple Objective Decision Making(BLL-MODM) problem in a large hierarchical decision making and planning organization. The proposed approach combines the attractive features of both fuzzy set theory and goal programming(GP) for MODM problem. The GP problem has been developed by fixing the weights and aspiration levels for generating pareto-optimal(satisfactory) solution at each level for BLL-MODM problem. The higher level decision maker(HLDM) provides the preferred values of decision vector under his control and bounds of his objective function to direct the lower level decision maker(LLDM) to search for his solution in the right direction. Illustrative numerical example is provided to demonstrate the proposed approach.

• 대한기관식도과학회지
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• 제4권1호
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• pp.52-58
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• 1998

BACKGROUND： Aspiration is defined as the laryngeal penetration of secretions below the level of the true vocal cords. Aspiration can result in life-threatening complications, such as bronchospasm, airway obstruction, pneumonia, pulmonary abscess, sepsis, and death. The patient with high vagal palsy had significant aspiration and dysphagia OBJECTIVE： To formulate a step-by-step management paradign for the patients with high vagal palsy MATERIALS AND METHODS : The medical records of 23 patients who were diagnosed as high vagal palsy from September, 1995 to April, 1998 in Seoul National University Hospital were reviewed retrospectively. Eleven patients were managed conservatively and 12 patients were operated to treat chronic aspiration. RESULTS : The main etiologies of high vagal palsy were mass lesions of the skull base such as neurogenic tumor, pseudotumor, meningioma or nasopharyngeal carcinoma. Aspiration and dysphagia improved in 7 out of 11 patients who were managed conservatively after 2.2 months on the average. The patients who were refractory to the conservative management underwent surgery and showed improvement in 10 out of 12 patients. The employed surgical modalities were vocal cord medialization combined with cricopharyngeal myotomy in 7 patients, laryngotracheal separation in 3 patients and arytenoid adduction only in 2 patients. Two patients still had gastrostomy tube due to the persistent symptoms. Two patients had improved after surgery, but died of underlying disease. CONCLUSION : The patients with high vagal palsy are recommended to be managed conservatively for the first 2 months. If aspiration and dysphagia are persisting after conservative management, vocal cord medialization combined with or without cricopharyngeal myotomy should be considered. If failed, laryngotracheal separation or gastrostomy will be the next option based on the control of the oropharyngeal secretion.

• 아동학회지
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• 제4권
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• pp.53-61
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• 1983

The purpose of this study was to investigate the effects of internal-external locus of control on level of aspiration in Korean Children. The locus of control was measured by means of the Nowicki & Strickland's "A Locus of Control Scale for Children (1973)". The level of aspiration was measured by "Throw Balls into the Basket Game" Sixty internal controlled children(30 girls and 30 boys) and 60 external controlled children(30 girls and 30 boys) were selected among 853 children in fifth grade. For the data analysis, two - way analysis of variance and t-test were applied, Pearson correlation coefficient was computed. The results of this study were as follows; 1. Goal discrepancy score were significantly higher in the internal controlled children than in the external controlled children. 2. Shift value were significantly higher in the external controlled children than in the internal controlled children. 3. School achievement were significantly higher in the internal controlled children than in the external controlled children. 4. There was no significant difference in the school achievement between the children who showed high goal discrepancy score and the children who showed low one. 5. There was no significant difference in the locus of control between girls and boys. 6. Goal discrepancy score were significantly higher in boys than in girls, but there was no significant difference in the shift value between girls and boys.

• 대한임상독성학회지
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• 제7권2호
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• pp.127-136
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• 2009

Purpose: It is known that aspiration pneumonitis is associated with high mortality and morbidity following overdose. However, until now, few domestic studies on this subject have been conducted. The main aim of this study is to investigate the risk factors associated with aspiration pneumonitis in intubated patients following overdose. Methods: Among 654 adult overdosed patients who visited our institution from Jan. 2006 to June 2008, we enrolled 70 intubated patients within 24 hours after their overdose, and we reviewed the medical records to collect the data. This data was processed by univariate analysis, followed by multiple logistic regression analysis. P values <0.05 were deemed statistically significant. Results: In our study, a high incidence of pneumonitis was seen in the patients with an older age, a lower GCS and a high poisoning severity score or a high comorbidity score (p<0.05). Compared with the non-pneumonitis group, the pneumonitis group had a higher incidence of intubation (6% vs 61.8%, respectively, p<0.05). The main cause of intubation was a decreased mentality (68.6%). Older age, a high comorbidity score, irrigation without airway protection, relative hypoxemia and hyperkalemia were the risk factors of aspiration pneumonitis in the intubated overdosed patients (p<0.05). Among these factors, age, a high potassium level and airway protection might be significant predictors of aspiration penumonitis (p<0.05). Conclusion: Older age, a high potassium level and irrigation without proper airway protection may be the significant factors that can predict aspiration pneumonitis in patients who are intubated within 24 hours after overdose, although the further investigations on this are needed.

• 기술혁신연구
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• 제24권2호
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• pp.177-205
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• 2016

점차 치열해지고 있는 경쟁환경은 기업들에게 생존을 위해 끊임없이 혁신적인 제품과 서비스를 창출하도록 요구하고 있다. 이러한 경쟁환경에 대응하기 위하여 기업들은 R&D 투자를 통하여 지속적인 혁신을 달성하고 있다. 이에 본 연구는 경쟁과 기업의 R&D 투자의 관계를 고찰하였다. 이를 위하여 경쟁을 실질적 경쟁과 잠재적 경쟁으로 이원화하여 각각이 기업의 R&D 투자에 미치는 영향을 관찰하였다. 또한 이 관계가 기업의 목표대비 성과 수준에 따라 어떻게 달라지는지 관찰하였다. 미국 Compustat 데이터로 실증분석을 수행한 결과, 실질적 경쟁은 기업의 R&D 투자를 감소시키는 경향이 있었던 반면 잠재적 경쟁은 R&D 투자를 증가시키는 경향이 있었다. 이에 대하여 목표대비 성과 수준의 조절효과는 기업의 성과가 목표보다 낮았을 때는 실질적 경쟁의 음(-)의 효과를 강화시키고, 잠재적 경쟁의 양(+)의 효과를 약화시켰고, 목표보다 높았을 때에도 실질적 경쟁의 음(-)의 효과를 강화 시키고, 잠재적 경쟁의 양(+)의 효과를 약화시켰으나 그 조절효과는 기업의 성과가 목표보다 낮았을 때보다 더욱 강하게 나타났다. 본 연구를 통하여 실질적 경쟁 및 잠재적 경쟁과 기업의 R&D 투자의사결정의 관계 그리고 목표대비 성과 수준의 역할을 이해하는데 도움이 될 수 있을 것으로 기대된다.

• 중환자간호학회지
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• 제14권3호
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• pp.73-86
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• 2021

Purpose : This study aimed to investigate the effects of oropharyngeal sensory stimulation using low-temperature capsaicin on dysphagia, dietary level, aspiration pneumonia, and nutritional status in acute stroke patients with dysphagia admitted to a stroke intensive care unit. Methods : This study used a randomized controlled trial design and 43 participants were randomly assigned to the experimental group (n=21) or control group (n=22). An oropharyngeal sensory stimulation intervention program was constructed based on previous studies. The intervention was provided before meals twice a day for seven days and started with the first meal after hospitalization. In the control group, a solution was made using only bottled water without adding capsaicin solution, and the intervention was provided at the same time, method, and number of times as the experimental group. Results : As a result of the study, dysphagia and dietary level improved in the experimental group that received oropharyngeal sensory stimulation using capsaicin. There were no effects on the nutritional status or aspiration pneumonia. Conclusion : This study provides basic data for the development of an intervention program for patients with dysphagia by presenting a theoretical basis that oropharyngeal sensory stimulation intervention using capsaicin improves dysphagia and dietary levels.

• 한국융합학회논문지
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• 제8권9호
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• pp.237-247
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• 2017

이 연구는 콜맨(Coleman)의 사회자본을 근거로 대학생의 사회자본(부모-자녀관계, 인적 네트워크, SNS 활용)이 진로포부 수준에 어떠한 영향을 미치는지 살펴보는데 목적이 있다. 이를 위해 상관관계 분석, 위계적 다중회귀 분석을 이용하여 통계적 유의성을 검증하였다. 주요 연구결과는 다음과 같다. 상관관계 분석 결과 사회자본의 하위변인 부모의 직업을 제외한 나머지 변인은 진로포부에 긍정적 영향을 미치는 것으로 나타났다. 또한 위계적 다중회귀 모형으로 확인한 결과 사회자본인 부모와 자녀의 관계, 사회활동을 통해 얻은 인적네트워크, 사회관계망 서비스의 활용 및 정보의 도움 정도는 직업포부에 통계적으로 유의미한 영향력을 미치는 것으로 나타났다. 이 같은 연구 결과는 사회계층 이동에 대학생의 사회자본의 소유 및 획득 과정이 중요한 성취지향가치관으로 작용하고 있음을 의미한다.

• 대한세포병리학회지
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• 제2권2호
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• pp.134-141
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• 1991

Localized or solitary fibrous tumor (SFT) of the pleura has been classified as a type of mesothelioma, arising from the submesothelial connective tissue cells. The preoperative diagnosis of the tumor at the cytologic or histologic level is very important for the proper handling of the lesion. This preoperative diagnosis is now possible by means of the advance in the transthoracic fine needle aspiration biopsy (FNA) techniques and in the very experience of the cytopathologists. We describe FNA cytologic feature of two cases of SFT arising from the pleura. Cytologic, histologic, immunohistochemical, and electron microscopic characteristics of pleural SFT are discussed. The tumor cells of SFT are spindle or oval in shape with a variable amount of cytoplasm. They are arranged in irregular trabeculae intimately associated with capillaries. A unique cytologic feature observed in this tumor is that thick, eosinophilic, amorphous collagen bundles are scattered between tumor cells.

• Journal of Korean Neurosurgical Society
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• 제52권3호
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• pp.264-266
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• 2012

Injury to the bilateral internal branch of superior laryngeal nerve (ibSLN) brings on an impairment of the laryngeal cough reflex that could potentially result in aspiration pneumonia and other respiratory illnesses. We describe a patient with traumatic cervical injury who underwent bilateral ibSLN palsy after anterior cervical discectomy with fusion (ACDF). An 75-year-old man visited with cervical spine fracture and he underwent ACDF through a right side approach. During the post-operative days, he complained of high pitched tone defect, and occasional coughing during meals. With a suspicion of SLN injury and for the work up for the cause of aspiration, we performed several studies. According to the study results, he was diagnosed as right SLN and left ibSLN palsy. We managed him for protecting from silent aspiration. Swallowing study was repeated and no evidence of aspiration was found. The patient was discharged with incomplete recovery of a high pitched tone and improved state of neurologic status. The SLN is an important structure; therefore, spine surgeons need to be concerned and be cautious about SLN injury during high cervical neck dissection, especially around the level of C3-C4 and a suspicious condition of a contralateral nerve injury.