• Journal of the Korean Society of Safety
• /
• v.18 no.4
• /
• pp.28-34
• /
• 2003

In the present study, three-dimensional finite element analysis was performed to investigate the effects of internal wall thinning defect on the failure pressure of elbow in the piping system and to develop the failure pressure evaluation model. From the results of finite element analysis, the failure pressure was derived by employing local stress criteria, and the effects of thinning location, bend radius, and defect geometry on the failure pressure of internally wall thinned elbow were investigated. Also, based on these investigations and previous model developed to estimate the failure pressure of elbow with an external pitting defect, the failure pressure evaluation model to be applicable to the elbow containing an internal thinning defect was proposed and compared with the results of finite element analysis. The failure pressure calculated by the model agreed well with the results of finite element analysis.

• Food Science and Preservation
• /
• v.16 no.1
• /
• pp.1-7
• /
• 2009

Watermelons (Citrulus vulgaris Schrad) are usually sorted manually by weight, appearance, and acoustic impulse, so grading of maturity and internal quality is subject to inaccuracies. It was necessary to develop a nondestructive evaluation technique of internal watermelon quality to reduce human error. Thus, acoustic characteristics related to internal quality factors were analyzed. Among these factors, three (ripeness, presence of an internal cavity, and blood-colored flesh) were selected for evaluation. The number of peaks and the sum of peak amplitudes for watermelons with blood-colored flesh were lower than for normal fruits. The portable evaluation system has an impact mechanism, a microphone sensor, a signal processing board, an LCD panel, and a battery. A performance test was conducted in the field. The internal quality evaluation model showed 87% prediction accuracy. Validation was conducted on 72 samples. The accuracy of quality evaluation was 83%. The quality of samples was evaluated by an inspector using conventional methods (hitting the watermelon and listening to the sounds), and then compared with prototype results. The quality evaluation accuracy of the prototype was better than that of the inspector. This nondestructive quality evaluation system could be useful in the field, warehouse, and supermarket

• Knowledge Management Research
• /
• v.22 no.3
• /
• pp.1-16
• /
• 2021

For the effective responsiveness toward Management Evaluation System of Public Institutions and continuous development as a public corporation, internal performance management is essential. In this study, the effect of employees' perceptions on the effectiveness and acceptability of the internal performance evaluation system on organizational commitment was tested, and we attempted to find implications for efficient performance management. For this purpose, we obtained valid responses from 208 members of A corporation and the hypotheses were verified through multiple regression analysis. As a result of the analysis, 'performance evaluation effectiveness' and 'performance evaluation acceptability' for internal performance evaluation had positive effects on 'organizational commitment'; however, the effect of 'differential performance compensation' on 'organizational commitment' was not significant. Also, among the control variables, 'age' and 'job group' were found to have a negative (-) effect on 'organizational commitment'. To derive more generalized conclusion, other researches using bigger samples are needed.

• The Korean Journal of Medicine
• /
• v.93 no.6
• /
• pp.497-500
• /
• 2018

• The Korean Journal of Nuclear Medicine
• /
• v.17 no.2
• /
• pp.25-33
• /
• 1983

Left ventricular wall motion was observed with EKG gated cardiac blood pool scan in 71 various cardiac diseases and 10 normal controls to evaluate its diagnostic and clinical significance in them. 1) In the presence of left ventricular dysfunction, visual evaluation of the left ventricular wall motion was useful to determine whether it was due to localized or diffuse abnormalities. In cardiomyopathy, marked left ventricular dilatation and severe hypokinesia were noted. 2) In myocardial infarction, regional wall motion abnormalities well represented the location of infarcted areas in majority of cases. Patients with inferior wall infarction had smaller decrease of the left ventricular ejection fraction and wall motion grade than anterior or combined groups. In whom persistent left ventricular failure was present, wall motion analysis with gated cardiac scan provided valuable information for the detection of ventricular aneurysms. 3) Evaluation of the left ventricular wall motion and its grading provided a reliable estimate of the left ventricular function. In conclusion, visual evaluation of left ventricular wall motion and its grading provided valuable information for analyzing the characteristics of regional and global left ventricular dysfunction.

• The Journal of the Korea Contents Association
• /
• v.17 no.12
• /
• pp.368-377
• /
• 2017

The purpose of this study was to find improvement measures of the internal accreditation system which is spontaneously operated by A university. To do so, this study reviewed the historical backgrounds and current issues of A university's internal accreditation system mainly based on government's accreditation and financial support programs on higher education institutes. And, this study also analyzed qualitative data which were collected via interviews with members of the committee of internal accreditation and the minutes of accreditation related meetings. These procedures were conducted by using Nvivo 11, which is specially designed for the qualitative research method. The main results of this study were the following: the current issues that A university's internal accreditation system faced included the faculties' unwillingness to participate due to the administrative work load caused by the internal accreditation program, and the difficulties of the preparation of evaluation reports caused by the ambiguity of evaluation standards. The measures for improving A university's internal accreditation system included (1)offering the enough time and detailed information for the preparation of evaluation reports, and (2)providing the specific feedback and the consistent and systematic management, (3)establishing the ordinary recording system of achievement, (4)setting the standards for the renewal of accreditation, (5)setting the evaluation standards that considers the uniqueness of various faculties, and lastly, (6)providing the official templates for evaluation reports.

• Nuclear Engineering and Technology
• /
• v.42 no.1
• /
• pp.109-114
• /
• 2010

Bioassay data analysis software (BiDAS-2007) has been developed by KAERI, which adds several new functions to its previous version. New functions of the BiDAS-2007 computer code enable the user not only to do a simultaneous analysis by using two or more types of bioassay for the best internal dose evaluation, but also to do a continual internal dose evaluation from a change of the internal exposure conditions such as an intake type (acute, chronic), an intake pathway (inhalation, ingestion), an absorption type (Type F, M, S), and a particle size (AMAD, activity median aerodynamic diameter), and also to estimate the intakes in various conditions of an internal exposure at a time. The values calculated by the BiDAS-2007 code are consistent and in good agreement with those values by IMIE-2004 code by Berkovski and IMBA code by Birchall. The BiDAS-2007 computer code is very useful and user-friendly to estimate the radionuclide intakes and committed effective doses of a radiation worker.

• The Journal of Korean Medicine
• /
• v.17 no.1 s.31
• /
• pp.48-83
• /
• 1996

Our conclusions for function evaluation tools of Stroke patients are as follows. 1. Evaluating tools of Activities of Daily Living, Katz Index, Barthel Index, Modified Barthel Index have high validity and reliability because of ease of measuring, high accuracy, consistency, sensitivity and sufficient stastistics, but they mainly measure motor function except sense, mentation, language, and social conception. Therefore cerebrovascular disease and brain injury in trauma patients with lacked acknowledgement and sensation, we are not able to apply these tools. 2. PULSES Profile is a useful scale for measuring the patient's over-all status, upper and lower limb functions, sensory components, excretary functions, and intellectual and emotional adaptabilities. It is recognized as a good, useful tool to evaluate patient's whole function. 3. Motor Assessment Scale was designed to measure the progress of stroke patients. The scale was supplemented with upper arm function items. We believe that the Motor Assessment Scale could be a useful evaluation tool with inter-rater reliability ,test-retest reliability. 4. The existing evaluation tools, Katz Index, Barthel Index, Modified Barthel Index, PULSES Profile, Motor Assessment Scale, mainly measured the rehabilitational motor function of sequela of cerebrovascular patients. On the other hand CNS & INH stroke scale can measure cerebrovascular disease patient's neurologic deficits and over-all stautus, which are recognition ability, speech status, motor function, sensory function, activities of daily living. Those scales have been recognized as useful tools to measure function of cerebrovascular disease patients and have increased in use. 5. Every function evaluation tool was recognized to have some validity and inter-rater, test-retest reliability in items of each evaluation tool and total scores of each evaluation tools, but it is thought that none of these scales have been fully validated and proved reliable. Therefore afterward, the development of a highly reliable rating system may best be accomplished by a careful comparison of several tools, using the same patients and the same observers in order to choose the most reliable items from each. 6. Ideal evaluation tools must have the following conditions; (1) It should show the objective functional statues at the same time. (2) It should be repeated consecutively to know changed function status. (3) It should be easy to observe the treatment program. (4) It should have the same result with another rater to help rater exchange information with treatment team members. (5) It should be practical and simple. (6) The patient should not suffer from the observer.

• The Journal of Internal Korean Medicine
• /
• v.21 no.5
• /
• pp.813-817
• /
• 2000

Objectives : This study had been done to evaluate the effectiveness of DITI about hemiparesis in 55 patients with cerebral vascular disease who admitted to Dong-seo oriental hospital from November. 10. 1999 to October. 13. 2000, Methods : 55 stroke patients who had hemiparesis not only numbness nor quadriparesis were taken picture with DITI to measure infrared streamed from body's surface. And we compared DITI' results with hemiparesis to evaluate the effectiveness of DITl. Results : There was significant results between DITI and hemiparesis. Above 80%, we could find abnormality in the DITI pictures, which were exactly corresponding to symptom of hemiparesis. Conclusions : We thought that we can use DITI' results as a evaluation of stroke patients with hemiparesis.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.13 no.5
• /
• pp.2610-2628
• /
• 2019

Advanced persistent threats (APTs) are constant attacks of specific targets by hackers using intelligent methods. All current internal infrastructures are constantly subject to APT attacks created by external and unknown malware. Therefore, information security officers require a framework that can assess whether information security systems are capable of detecting and blocking APT attacks. Furthermore, an on-line evaluation of information security systems is required to cope with various malicious code attacks. A regular evaluation of the information security system is thus essential. In this paper, we propose a dynamic updated evaluation framework to improve the detection rate of internal information systems for malware that is unknown to most (over 60 %) existing static information security system evaluation methodologies using non-updated unknown malware.