• Asian Journal of Innovation and Policy
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• v.3 no.1
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• pp.25-49
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• 2014

We wanted to show the different group dynamics of factors for success and failure cases for technology commercialization in small technology-based firms. Existing studies are based on product level, project level, division level or firm level. We deal with technology level, and at small-technology-based firms. This is a longitudinal case study based on 8 cases from Korea. Our study on technology level is a first trial in success and failure studies unlike all existing studies. As a first step, we introduced new categories and factors such as technology attributes and CEO reflecting data, and especially a new concept of launch readiness level. Finally, we adopted correspondence analysis to show the group dynamics. The results are as follows; Technology factors are the most important factors. Second, resource-based factors are more critical in failure cases than success cases and technology factors are more critical to success.

• Journal of Chest Surgery
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• v.25 no.1
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• pp.96-104
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• 1992

The 242 patients were operated due to chronic empyema in Hanyang University Hospital From Jan, 1983 to Aug, 1991, we operated 17 patients by modified.Schede`s thoracoplasty with myoplasty and we concluded to next scentences. 1. The age of patients were varied from 28 to 65[Average 39.1] and male preponderance was seen[more than 3 times]. 2. The preoperative cause of disease were tuberculosis in 14 patients[3 patients were associated with aspergillosis, and 1 patient was associated vrith actinomycosis], lung abscess in 2 patients, and haemophilia in 1 patient. 3. The Preoperative duration of empyema were varied from 1 month to 30 years[Average 49.8 month], and the duration from pulmonary resection to thoracoplasty were 1 month to 13.5 years[Average 55 month] except 3 patients, who were operated pneunectomy with thoracoplasty at the same time. 4. The total number of thoracoplasty were 19, because in 2 patients, we operated 2 steps, and we failed in 6 cases, so the success rate was 68.5%. 5. In failure analysis of 6 cases, the cause were obliteration failure in 3 cases, inadequete drainage in 1 case, and in the other 1 case was mixed type. 6. From 1990 to 1991, there were no death associated with operation and there were 1 failure, so the success rate was greatly improved. 7. The bronchopleural fistula or spontaneous rupture of trachea were seen in 12 cases, and the success rate was high in absent cases.

• Journal of Chest Surgery
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• v.44 no.6
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• pp.418-422
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• 2011

Background: It has recently become most general to use the small bore catheter to perform closed thoracostomy in treating iatrogenic pneumothorax. This study was performed for analysis of the efficacy of treatment methods by using small bore catheter such as 7 F (French) central venous catheter, 10 F trocar catheter, 12 F pigtail catheter and for analysis of the appropriateness of each procedure. Materials and Methods: From March 2007 to February 2010, Retrospective review of 105 patients with iatrogenic pneumothorax, who underwent closed thoracostomy by using small bore catheter, was performed. We analyzed the total success rate for all procedures as well as the individual success rate for each procedure, and analyzed the cause of failure, additional treatment method for failure, influential factors of treatment outcome, and complications. Results: The most common causes of iatrogenic pneumothorax were presented as percutaneous needle aspiration(PCNA) in 48 cases (45.7%), and central venous catheterization in 26 cases (24.8%). The mean interval to thoracostomy after the procedure was measured as 5.2 hours (1~34 hours). Total success rate of thoracostomy was 78.1%. The success rate was not significantly difference by tube type, with 7 F central venous catheter as 80%, 10 F trocar catheter as 81.6%, and 12 F pigtail catheter as 71%. Twenty one out of 23 patients that had failed with small bore catheter treatment added large bore conventional thoracostomy, and another 2 patients received surgery. The causes for treatment failure were presented as continuous air leakage in 12 cases (52.2%) and tube malfunction in 7 cases (30%). The causes for failure did not present significant differences by tube type. Statistically significant factors affecting treatment performance were not discovered. Conclusion: Closed thoracostomy with small bore catheter proved to be effective for iatrogenic pneumothorax. The success rate was not difference for each type. However, it is important to select the appropriate catheter by considering the patient status, pneumothorax aspect, and medical personnel in the cardiothoracic surgery department of the relevant hospital.

• The Journal of the Korean dental association
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• v.10 no.12
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• pp.813-816
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• 1972

The authors have observed 207 cases on the results of pulp healing after pulp capping. The results are as follows: 1) We could have success-rate of 70% in 207 cases at the ages from 14 to 59. 2) The success-rate in male is 72.4% in 87 cases, and female is 67.5% in 120 cases. So we observed that success-rate was slightly higher in male than female. 3) In view of age group, it was observed that success-rate was 79% in 129 cases at 30 ages below, 62.5% in 40 cases at 30-40 ages, 47.3% in 38 cases at 40 ages over. So we found that the failure-rate was increased by aging.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.17 no.1
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• pp.261-268
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• 2017

The development of ICT technology centered on mobile smart platforms have been emerging as a shared economic platform based on collaborative consumption. In this study, we analyze what factors affect success and failure in commercialized shared economic platforms from 2008 to 2016, and present what policy factors are needed to activate shared economic platform. To do this, we analyze successful cases of shared economic platforms and failed cases, derive key variables that affect success and failure, and conduct inductive analysis based on ID 3 algorithm based on them. Through this, we present the policy factors for the commercial success of the shared economic platform by deriving the rules for the success and failure of the shared economic platform.

• Journal of Chest Surgery
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• v.26 no.1
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• pp.44-46
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• 1993

There are several methods for managing pneumothorax through thoracoscope. Among them, electric cautery of bleb or bulla is very simple to do and can be done through the conventional thoracoscope. It is cosmetically excellent because it needs only incision. It is economically cheap comparing other methods because it does not need staplers or clips and other disposables. However, this method has been controversial for its success rate because of the ability of sealing off the air-leaking from the lung tissue. To evaluate the success rate, 29 cases of pneumothorax treated by electric cautery and instillation of oxytetracyline solution through the thoracoscope were analyzed. Among 29 patients, 18 were male and 11 female ranging 17 to 43 years old. The indications for thoracoscopy were recurrence in 20 cases and persistence in 9 cases. The underlying casuses of pneumothorax were bleb in 10 cases and bulla with bleb or not in 19 cases. Twenty one cases were successful [4%] and 8 cases were failed. The failed 8 cases were explored from 14 to 28 days after thoracoscopy.Six cases were explored through transaxillary minithoracotomy and 2 were done through limited posterolateral thoracotomy. The causes of failure were the necrotic lung tissue occured by excessive electric cautery in 6 cases and the necrotic lung tissue and residual bulla in two cases. In 10 bleb cases, 9 were successful [90.0%]. But in 19 cases of bulla, 12 were successful [63.2%]. In conclusion, the success rate of electric cautery through thoracoscope was 72. 4% and the causes of failure were lung necrosis and residual bulla. The success rate of the bleb cases was higher than that of the bulla cases.

• Archives of Plastic Surgery
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• v.32 no.4
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• pp.461-466
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• 2005

Despite the major advances in the microvascular surgery with success rates of up to 98%, failure and vascular complications still remain even in the experienced hands. Failure of blood to flow across an anastomosis is usually caused by three factors: (1) Technical errors; (2) Undetected damage more proximally or via vasospasm; or (3) A clot or a thrombus. The success of a microvascular surgery depends on the severity of the vascular injury and, proper debridement of an injured vessel, and the failure rate of microvascular anastomosis in cases of trauma is higher as the thrombogenic possibility is increased by the endothelial damage. From January to November in 2003, 460 patients were underwent microvascular surgery(270 replantations and 190 free flap transfers) and re-operations were performed in 15 cases. Cases were reviewed by clinical and operative records. In these cases, causes of post-operative circulation insufficiency were identified as 9 vascular spasms and 6 thromboses at the previous anastomotic site. The average of re-operative success rate was 73%(60% in replantations and 100% in free flaps). In conclusion, through precise postoperative monitoring and assessment, immediate surgical re-exploration could be performed when a vascular complication is suspicious, the success rate of microvascular surgery would be increased more.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.10a
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• pp.328-331
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• 2013

As digital ecosystem has been rapidly transforming into the mobile based platform, several mobile operating system, which is in charge of user interface with mobile device has been appeared. This research suggest critical factors affecting success and failure of several commercial mobile operating systems from Palm OS appearing in 1996 to main mobile OSs appearing in 2013. For this, we analyse several mobile operating OS cases, elicit factors affecting success and failure of mobile OS, and conduct ID3 based inductive learning analyses based on elicted factors and values in case dataset. Through this, we draw rules in success and failure of mobile OS and suggest strategic implications for the commercial success of mobile OS.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.2
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• pp.258-264
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• 2015

This research suggests critical factors affecting success and failure of several commercial mobile operating systems from Palm OS appearing in to main mobile OSs appearing in 2013. For this, we analyses several mobile operating cases, elicit factors affecting success and failure of mobile OS, and conduct ID3 based inductive learning analyses based on elicited factors and values in case dataset. Through this, we draw rules in success and failure of mobile OS and suggest strategic implications for the commercial success of mobile OS in perspective of innovation and globalization.

• Information Systems Review
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• v.12 no.2
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• pp.121-144
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• 2010

Recently, ITSM(IT Service Management) is adopted very widely among private and public organizations. The successful implementation of ITSM requires continuous improvement, not just implementation of IT processes and/or ITSM solutions. One of the major tools for the continuous improvement is 6 Sigma technique. This study compares success and failure cases at the project level, and identifies factors affecting successful application of 6 Sigma technique in the improvement of ITSM. To achieve the research objective, this study first identifies and classifies success factors for 6 Sigma application through literature review. Then, factors to be used in the study are determined. Based on the factors, success and failure cases are compared. The research results show that all 5 factors (participation of management, participation of project team, project selection and verification, customer and market orientation, strategy and goal focus) are significantly different between success and failure cases.