• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.49 no.1
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• pp.13-20
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• 2023

Objectives: Ultra-wide implants may be used as a replacement if existing implants fail. This study was conducted to evaluate the factors influencing the prognosis and failure of ultra-wide implants. Patients and Methods: This study evaluated whether sex, age, site, diameter, length, additional surgery, implant stability (primary and secondary), and reason for ultra-wide implant placement affect the 5-year survival and success rates and marginal bone loss (MBL) of ultra-wide implants. Seventy-eight ultra-wide implants that were placed in 71 patients (39 males and 32 females) from 2008 to 2010 were studied. One-way ANOVA analysis was conducted to evaluate the statistical significance of MBL according to the patient's sex, implant site, and diameter. Independent sample t-tests were used to determine the statistical significance of MBL analysis which was used to determine the significance of the 5-year success and survival rates related to the variables. One-way ANOVA was conducted to evaluate the statistical significance of sex, implantation site, diameter, and MBL. Independent sample t-tests were used to evaluate the correlation between implantability and MBL for implantation reasons, while additional surgery, length, and Kaplan-Meier analysis were used to evaluate 5-year survival and success rates. Results: The mean age of patients was 54.2 years with a survival rate of 92.3% and a success rate of 83.3% over a mean 97.8-month period of observation. MBL averaged 0.2 mm after one year of prosthetic function loading and 0.54 mm at the time of final observation. Success rates correlated with primary stability (P=0.045), survival rates correlated with secondary stability (P=0.036), and MBL did not correlate with any variables. Conclusion: Ultra-wide implants can be used to achieve secure initial fixation in the maxillary and mandibular molar regions with poor bone quality or for alternative purposes in cases of previous implant failure.

• Restorative Dentistry and Endodontics
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• v.10 no.1
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• pp.115-126
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• 1984

The purpose of this study was to determine the incidence and the degree of interappointment pain and post obturation pain associated with the pretreated clinical factors or conditions, and to examine the correlation between the success or failure and the pretreated clinical factors or conditions and postoperative pain. The author experienced the conventional root canal therapy in one hundred fifty-one teeth after recording the following clinical factors or conditions - sex, age, pulp vitality status, presence or absence of periapical rarefaction, single or multirooted teeth, pretreatment pain, and investigated the pain during and after treatment for seven days. After six months all the cases were re-evaluated through the clinical sign, symptom, and the recalled radiograph. The following results were obtained; 1. Of the 151 teeth (73.5%) had no interappointment pain, 31 teeth (20.5%) slight pain; and 9 teeth (6.0%) moderate to severe pain. 2. The presence of the pretreatment pain significantly increased the incidence and degree of interappointment, and there were no significant relationship between interappointment pain and other clinical factors or conditions. 3. Of the 151 teeth, 142 teeth (4.0%) experienced no post obturation pain, 3 teeth (2.0%) slight pain, 6 teeth (4.0%) moderate to severe pain. 4. There were no statistical correlation between postobturation pain and any of the clinical factor or conditions. 5. 141 teeth (3.4%) of 151 teeth were evaluated as success in this study, and success rate was decreased significantly in the cases of periapical rarefaction before treatment and postobturation pain. But there were no significant relationship between success or failure and other clinical factors or conditions.

• Clinical Endoscopy
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• v.56 no.6
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• pp.790-794
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• 2023

Background/Aims: Situs inversus viscerum (SIV) is a congenital condition defined by left-to-right transposition of all visceral organs. This anatomical variant has caused technical challenges in endoscopic retrograde cholangiopancreatography (ERCP). Data on ERCP in patients with SIV are limited to case reports of unknown clinical and technical success rates. This study aimed to evaluate the clinical and technical success rates of ERCP in patients with SIV. Methods: Data from patients with SIV who underwent ERCP were retrospectively reviewed. The data were collected by querying the nationwide Veterans Affairs Health System database for patients diagnosed with SIV who underwent ERCP. Patient demographics and procedural characteristics were collected. Results: Eight patients with SIV who underwent ERCP were included. Choledocholithiasis was the most common indication for ERCP (62.5%). The technical success rate was 63%. Subsequent ERCP with interventional radiology-assisted rendezvous has increased the technical success rate to 100%. Clinical success was achieved in 63% of cases. Among cases of subsequent rendezvous ERCP after conventional ERCP failure, clinical success was achieved in 100%. Conclusions: The clinical and technical success rates of ERCP in patients with SIV were both 63%. In patients with SIV in whom ERCP fails, interventional radiology-assisted rendezvous ERCP can be considered.

• Journal of Information Technology Services
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• v.15 no.2
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• pp.1-19
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• 2016

With various success stories of crowdfunding, government's establishment of crowdfunding act, and expected rapid growth of crowdfunding market, the potential ripple effect of crowdfunding on our society is anticipated to be enormous. This study investigates the influential factors and their impacts on the likelihood of project success in donation-based crowdfunding through the DonorsChoose case. The authors analyze the characteristics of project creator, characteristics of project, and behaviors of project participants in relation to the success or failure of the corresponding project. Consequently, the authors found that participants of donation-based crowdfunding exhibit altruistic behaviors and obtained the following specific results: First, donation participation and social capital of the project creator, and marginal help utility of receivers positively affect the success of project. Second, experience of past project creation of the project creator negatively affects the success of project. Third, past donations of the project creator to others' projects, when not appropriately signaled like on the DonorsChoose platform, may not exert a positive influence on the success of project and the reciprocity principle may not work.

• East Asian Journal of Business Economics (EAJBE)
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• v.3 no.2
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• pp.26-30
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• 2015

Purpose-This paper aims to do research on success and failure of Chinese enterprises and suggest the implications to the Chinese enterprises by comparing the representative examples of Chinese enterprises' overseas M&A. Research Design, Data, and Methodology-This paper selected by six cases of Chinese enterprises' overseas M&A to do the contrast. Results-Consulting company still plays a very important role in Chinese enterprises' overseas M&A because Chinese enterprises' overseas M&A is being placed in growth stage. And how to grasp the development trend of industry accurate and choose the correct target enterprises is a very important issue for Chinese enterprises which can make Chinese enterprises to avoid blind investment. Conclusion-Chinese Enterprises have to evaluate the target enterprise with the aid of authoritative investment and consulting company, focus on training qualified talents and the integration after the M&A when they Overseas M&A in the future.

• Journal of KIISE
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• v.42 no.4
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• pp.468-474
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• 2015

Corporations should make efforts to recognize the importance of projects, identify their failure factors, prevent risks in advance, and raise the success rates, because the corporations need to make quick responses to rapid external changes. There are some previous studies on success and failure factors of projects, however, most of them have limitations in terms of objectivity and quantitative analysis based on data gathering through surveys, statistical sampling and analysis. This study analyzes the failure factors of projects based on data mining to find problems with projects in an audit report, which is an objective project evaluation report. To do this, we identified the texts in the paragraph of suggestions about improvement. We made use of the superior classification algorithms in this study, which were NaiveBayes, SMO and J48. They were evaluated in terms of data of Recall and Precision after performing 10-fold-cross validation. In the identified texts, the failure factors of projects were analyzed so that they could be utilized in project implementation.

• International Journal of Quality Innovation
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• v.9 no.2
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• pp.119-127
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• 2008

In this paper, we survey Six Sigma in Korea company real fields. Six Sigma itself are developed depend on each company culture and strategy. Our country has been more than 10 years since introduced Six Sigma in our country. Each company which work six Sigma are developed differ way depending on his company situation. Our country Six Sigma in our country is necessary to survey and analysis. Firstly, we survey how to use Six Sigma. Next, we survey to find success factor and failure factor by reports published by company and papers by published in journals.

• Culinary science and hospitality research
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• v.11 no.3 s.26
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• pp.18-39
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• 2005

There are various factors to determine success and failure of new product development. Among them one of the most important factors for success will be strategic management of development process for a new product. First the development process for a new product in domestic restaurant business is improvement of existing product quality or extension of a product line. Second, the study found that there is a strong relationship between the development strategy.for a new product and its outcome. The more focused a product becomes in cost efficiency and customer relations, the better reflected the financial and non financial outcome can be in analysis. Third, financial outcome tends to be considered more than non financial outcome on deciding success of the new product development. Fourth, the study indicates that there is a direct relationship between financial non financial outcome analysis and success of new product development.

• Knowledge Management Research
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• v.7 no.1
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• pp.49-63
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• 2006

The objective of the study is to verify the discriminatory power of technology innovation in predicting Early Stage Ventures' success or failure. To accomplish this objective, we test early stage ventures'(Firm's period is below 3 years)technology innovation and performance. The result of the study is expected to be useful in loan evaluation, investment decision, internal management decision making and business improvement. The results of study is as follows. First, Early Stage Ventures' technology innovation power is composed of 4 major indexes(technology, marketability, manufacturing infra and economic feasibility). Second, we find that thirty-seven minor indexes are significant ex-ante variable which are discriminating between firms' success and failure in Early Stage Ventures. Also thirty-seven minor indexes explain 57.2% of the total variance. This explainable power of these indexes is similar to that of the existing 58 index elements. Finally, we find that the most important technology innovation power of Early Stage Ventures' is economic feasibility.

• Journal of Digital Convergence
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• v.11 no.4
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• pp.121-128
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• 2013

Because of governmental regulations, large-scale discount stores are trying to find a new way that can expand a market size. Homeplus virtual store has received attention from the other companies, because virtual store can access 24 hours and be unfettered by governmental regulations. The purpose of the study is to review performance and strategies of Homeplus virtual store as well as the cause of the failure of imitators. To do this, we can find key indicators of success of virtual store.