• Structural Engineering and Mechanics
• /
• v.90 no.2
• /
• pp.159-175
• /
• 2024

In order to solve the problem of calculating the reasonable completed bridge state of a self-anchored hybrid cable-stayed suspension bridge (SA-HCSB), this paper proposes an analytical method. This method simplifies the main beam into a continuous beam with multi-point rigid supports and solves the support reaction forces. According to the segmented catenary theory, it simultaneously solves the horizontal forces of the main span main cables and the stay cables and iteratively calculates the equilibrium force system on the main beam in the collaborative system bridge state while completing the shape finding of the main span main cable and stay cables. Then, the horizontal forces of the side span main cables and stay cables are obtained based on the balance of horizontal forces on the bridge towers, and the shape finding of the side spans are completed according to the segmented catenary theory. Next, the difference between the support reaction forces of the continuous beam with multiple rigid supports obtained from the initial and final iterations is used to calculate the load of ballast on the side span main beam. Finally, the axial forces and strains of each segment of the main beam and bridge tower are obtained based on the loads applied by the main cable and stay cables on the main beam and bridge tower, thereby obtaining analytical data for the bridge in the reasonable completed state. In this paper, the rationality and effectiveness of this analytical method are verified through a case study of a SA-HCSB with a main span of 720m in finite element analysis. At the same time, it is also verified that the equilibrium force of the main beam under the reasonably completed bridge state can be obtained through iterative calculation. The analytical algorithm in this paper has clear physical significance, strong applicability, and high accuracy of calculation results, enriching the shape-finding method of this bridge type.

• Journal of Minimally Invasive Surgery
• /
• v.21 no.4
• /
• pp.154-159
• /
• 2018

Purpose: Intussusception is a common cause of intestinal obstruction in children. While most patients can be treated by enema reduction, about 20% require surgery. We investigated the usefulness and feasibility of laparoscopic surgery and the intraoperative risk of bowel resection. Methods: We retrospectively reviewed pediatric patients who underwent surgery for intussusception from 2010 to 2017. We collected data for age, gender, body weight, associated symptoms, duration of symptoms, white blood cell count, operating time, and postoperative complications. Results: Of 155 patients, 37 (23.8%) underwent surgery due to enema reduction failure in 29 (78.3%), recurrence in 6 (16.3%), a suspicious lead point in 1, and suspicious ischemic change observed on ultrasonography in 1. The mean age was $26.8{\pm}18.9$ months (range, 3.5~76.7 months), and the mean body weight was $12.9{\pm}3.9kg$ (range, 5.4~22.2 kg). Laparoscopic surgery was successful in 29 patients (78.4%), and 7 (18.9%) needed bowel resection and anastomosis. The mean operating time was $56.7{\pm}32.8min$. A lead point was found in 3 patients in the bowel resection group (p=0.005); in addition, the operating time and hospital stay were longer in this group. There were no intra- or postoperative complications. Conclusion: Laparoscopic surgery was successful in 78.4% of the patients with a short hospital stay and early oral intake. The only predictive factor for bowel resection was the presence of a lead point. Laparoscopic surgery may be an optimal treatment intervention for children with intussusception, except for those who show initial peritonitis.

• Journal of Korean Academy of Fundamentals of Nursing
• /
• v.6 no.3
• /
• pp.522-531
• /
• 1999

This research identifies the ingress to egress primary factors that causes a patient to receive delayed emergency medical care. This material was collected between February 1st to 28th, 1998. Research envolved 4,118 people who visited the college emergency medical center in Kyeongido Province, South Korea. Medical records were examined, using the retrospective method. to determine the length of stay and the main cause for waiting. Results are as follows : 1. The age group with the highest admission rate was 10 and under, approximately 1,394 (33.9%). Followed by an even distribution for ages between 11-50 at 10-15% for their respective ranges. The lowest admission rate was 50 years and above. 2. From the 4,118 records examined, 3,489 received outpatient treatment (84.7%); 601 were admitted for inpatient care (14.6%); 25 arrived dead on arrival (0.6%); and 4 people died at the hospital. 3. Between 7PM to 12AM, 42.9% were admitted to the EMC. The hours from 9PM to 11PM recorded the highest admission rate and 5AM to 8AM was the lowest From 8PM to 12AM, the most beds were occupied. 4. For most patients. the average length of stay was approximately 2.2 hours. By medical department, external medicine was the longest for 2.8 hours. Pediatrics was the shortest for 1.6 hours. The average waiting period for inpatient admission was 2.6 hours. Inpatient admission for pediatrics and external medicine was 3.4 hours and 2.2 hours respectively. 5. Theses are primary factors for delay at EMC: 1) pronged medical consultations to decide between inpatient versus outpatient treatment, and delaying to be inpatient, 2) when you call physicians they are delayed to come 3) Understaffing during peak or critical hours, 4) Excessive consulting with different medical departments, 5) some patients require longer monitoring periods, 6) medical records are delayed in transit between departments, 7) repeated laboratory tests make delay the result, 8) overcrowded emergency x-ray place causes delay taking x-ray and portable x-ray, 9) the distance between EMC and registration and cashier offices is too far. 10) hard to control patient's family members. The best way to reduce EMC waiting and staying time is by cooperation between departments, both medical and administrative. Each department must work beyond their job description or duty and help each other to provide the best medical service and satisfy the patient needs. The most important answer to shortened the EMC point from ingress to egress is to see things from a patient point of view and begin from there to find the solution.

• Proceedings of the Safety Management and Science Conference
• /
• 2006.04a
• /
• pp.229-236
• /
• 2006

In the country, already a 400 species and some Interchanges of different Section of Industry have been organized and a number of related industry come to a 4000 species. In this study, we will be helpful to activity of Interchanges of different Section of Industry by concretely suggestion of the utility operation method of Interchanges of different Section of Industry in the many-sided point. But in the present, Interchanges of different Section of Industry stay at a form of a friendly society as yet.

• Proceedings of the Safety Management and Science Conference
• /
• 2003.11a
• /
• pp.309-313
• /
• 2003

In the country, already a 400 species and some Interchanges of different Section of Industry have been organized and a number of related industry come to a 4000 species. But in the present, Interchanges of different Section of Industry stay at a form of a friendly society as yet. In this study, we will be helpful to activity of Interchanges of different Section of Industry by concretely suggestion of the utility operation method of Interchanges of different Section of Industry in the many-sided point.

• Proceedings of the Korea Society for Industrial Systems Conference
• /
• 2006.05a
• /
• pp.345-350
• /
• 2006

In the country, already a 400 species and some Interchanges of different Section of Industry have been organized and a number of related industry come to a 4000 species. In this study, we will be helpful to activity of Interchanges of different Section of Industry by concretely suggestion of the utility operation method of Interchanges of different Section of Industry in the many-sided point. But in the present, Interchanges of different Section of Industry stay at a form of a friendly society as yet.

• Proceedings of the Safety Management and Science Conference
• /
• 2002.05a
• /
• pp.231-236
• /
• 2002

In the country, already a 400 species and some Interchanges of different Section of Industry have been organized and a number of related industry come to a 4000 species. But in the present, Interchanges of different Section of Industry stay at a form of a friendly society as yet. In this study, we will be helpful to activity of Interchanges of different Section of Industry by concretely suggestion of the utility operation method of Interchanges of different Section of Industry in the many-sided point.

• Proceedings of the Safety Management and Science Conference
• /
• 2004.11a
• /
• pp.329-335
• /
• 2004

In the country, already a 400 species and some Interchanges of different Section of Industry have been organized and a number of related industry come to a 4000 species. But in the present, Interchanges of different Section of Industry stay at a form of a friendly society as yet. In this study, we will be helpful to activity of Interchanges of different Section of Industry by concretely suggestion of the utility operation method of Interchanges of different Section of Industry in the many-sided point.

• Proceedings of the Safety Management and Science Conference
• /
• 2003.05a
• /
• pp.203-209
• /
• 2003

In the country, already a 400 species and some Interchanges of different Section of Industry have been organized and a number of related industry come to a 4000 species. But in the present, Interchanges of different Section of Industry stay at a form of a friendly society as yet. In this study, we will be helpful to activity of Interchanges of different Section of Industry by concretely suggestion of the utility operation method of Interchanges of different Section of Industry in the many-sided point.

• Journal of the Korea Safety Management & Science
• /
• v.4 no.3
• /
• pp.123-130
• /
• 2002

In the country, already a 400 species and some Interchanges of different Section of Industry have been organized and a number of related industry come to a 4000 species. But in the present, Interchanges of different Section of Industry stay at a form of a friendly society as yet. In this study, we will be helpful to activity of Interchanges of different Section of Industry by concretely suggestion of the utility operation method of Interchanges of different Section of Industry in the many-sided point.