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We know that Unified Korea should maintain optimal size of military force power after two Koreas`` unification. This study addresses "What factors are influencing when we decide the optimal size of military force power after unification in Korean Peninsula?" This paper aims to ‘provide judgement grounds for optimal size of military power' through researching ‘factors which influence choosing the size of military powers.' First, the unification processes of separated countries which had similar division history were studied. Second, military integration process was researched in detail. Third, factors considered in history on judging or building military force were examined through existing studies and researches by military scholars. Fourth, "expected factors need to be considered for judging proper military force power of unified Korea" were selected through the courses mentioned above, and as a result, final factors were chosen by experts`` discussion and questionnaire with Delphi technique. Lastly, every single factor was verified and measured by importance through AHP technique. The result is that the importance of five areas in first hierarchy was analyzed as follow: ① international relations/order(30.0%), ② military(25.0%), ③ economic(18.0%), ④ political(14.0%), ⑤ social (13.0%). The result of importance analysis on all the areas and factors from the first and second hierarchy is as follows. The major factors from the top 5 list indicates that ① ROK-US alliance was analyzed the most influential one. Next, ② military policy/strategy, ③ security environment around the Korean Peninsula, ④ S. and N. Korea relations, ⑤ the level of national economic power follow. In conclusion, this study is meaningful because "the factors we should consider deciding the optimal size of military power after two Koreas`` unification" hasn``t been researched. It also categorized 29 factors into five areas to measure the importance of all influential factors and suggest priority. I expect that this study would be helpful for judging the optimal size of military power after two Koreas are unified, and also provide ideas for further research.
In the modernized warfare, all the forces are being integrated to win the war. victories in any war can no longer be achieved merely by a variable or two. There are certain types of variables that are defined as archetypical tangible elements such as the national leader's war leadership, military power, economic power, reserve forces, and mobilization capabilities, etc. In addition to those tangible elements, there are intangible elements--such as politics, science, technology, and social cultures -- these are also considered as the vital variables that would determine victory in war. Another factor that would determine the result of war is recognizing the importance of the “will of the people”, which is another type of intangible element. War causes significant damages to the people directly involved in it, and the damages are catastrophic. For instance, many people will nearly starve to death, and vast majority of people will lose their shelters because their houses will be destroyed. Moreover, heating system will fail to keep people warm. While there will be numerous displaced civilians, blackouts and lack of water supply will cause a great difficulties to the people. The government will increase taxes, and issue war bonds to provide funding during the war. Many men will be conscripted to fight the war, and women, on the other hand, will be sent off to the factories to manufacture weapons and ammunition. In the mix of helter-skelter, some nation have overcame its suffering and achieved victory. While other nations could not over come the suffering from war, and thus conducted anti-government activities that led to losing the war. If war breaks out in the Korean peninsula, it is no doubt that the war will cause national calamities. Whatever the cause, the war must be avoided. It is vital to achieve victory if war breaks out. In order to achieve such a task, the citizens will have no choice but to serve in the military with various military tasks assigned to them, while they limit the citizen's right. Hence, throughout this process of fighting the war, the result of war will be significantly determined by the will of Korean people. As a conclusion, it is exigent to argue that the citizens must show their determination to win victory in war, and the government must use any necessary means to support the citizens so that they can fight for victory.
Surface Texturing is an essential process for high efficiency in multi-crystalline silicon solar cell. In order to reduce the reflectivity, there are two major methods; proper surface texturing and anti-reflection coating. For texturization, wet chemical etching is a typical method for multi-crystalline silicon. The chemical solution for wet etching consists of HF, HNO₃, DI and CH₃COOH. We carried out texturization by the change of etching time like 15sec, 30sec, 45sec, 60sec and measured the reflectivity of textured wafers. As making the silicon solar cells, we obtained the conversion efficiency and relationship between texturing condition and solar cell characteristics. The reflectivity from 300㎚ to 1200㎚ was the lowest with 15 sec texturing time and 60 sec texturing time showed almost same reflectivity as bare one. The 45 sec texturing time showed the highest conversion efficiency.
Subchondral bony cyst, large solitary or multiple cysts in acetabular dome usually exacerbate progression to degenerative osteoarthritis in the hip joint. But it can be treated through arthroscopic intervention. We report two cases that treated by arthroscopic curettage and bone graft for subchondral bony cysts in early osteoarthritis of the hip joint, and it may delay progression to moderate osteoarthritis.
Purpose: Antral pseudocyst is a common benign lesion that exists in the maxillary sinus. Because of this possible complication, controversy remains with respect to sinus floor elevation operations. The purpose of this study was to analyze the antral pseudocyst related to maxillary sinus augmentation. Patients and Methods: The radiographs of 268 patients who visited Chosun University Dental Hospital from 2008 to 2010 and underwent the maxillary bone grafting procedure were examined. Results: Of the 268 patients who underwent the maxillary bone grafting procedure, 5 patients (1.86%) were diagnosed with antral pseudocysts. In all cases, maxillary sinus floor elevation was performed without aspiration, biopsy or extraction of the antral pseudocyst. Conclusion: Antral pseudocysts are not considered a contraindication for maxillary sinus bone grafting procedure.
Comparative study of postoperative stability between conventional orthognathic surgery and a surgery-first orthognathic approach after bilateral sagittal split ramus osteotomy for skeletal class III correction
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Objectives: The purpose of this study is to compare the postoperative stability of conventional orthognathic surgery to a surgery-first orthognathic approach after bilateral sagittal split ramus osteotomy (BSSRO). Materials and Methods: The study included 20 patients who underwent BSSRO for skeletal class III conventional orthognathic surgery and 20 patients who underwent a surgery-first orthognathic approach. Serial lateral cephalograms were analyzed to identify skeletal changes before surgery (T0), immediately after surgery (T1), and after surgery (T2, after 1 year or at debonding). Results: The amount of relapse of the mandible in the conventional orthognathic surgery group from T1 to T2 was 2.23±0.92 mm (P<0.01) forward movement and -0.87±0.57 mm (non-significant, NS) upward movement on the basis of point B and 2.54±1.37 mm (P<0.01) forward movement and -1.18±0.79 mm (NS) upward movement on the basis of the pogonion (Pog) point. The relapse amount of the mandible in the surgery-first orthognathic approach group from T1 to T2 was 3.49±1.71 mm (P<0.01) forward movement and -1.78±0.81 mm (P<0.01) upward movement on the basis of the point B and 4.11±1.93 mm (P<0.01) forward movement and -2.40±0.98 mm (P<0.01) upward movement on the basis of the Pog. Conclusion: The greater horizontal and vertical relapse may appear because of counter-clockwise rotation of the mandible in surgery-first orthognathic approach. Therefore, careful planning and skeletal stability should be considered in orthognathic surgery.