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An Economic Approach to the Rational Development and Use of Marine Resources (II) (해양자원의 합리적 개발.이용에 관한 경제학적 연구(II))

  • 유동운
    • The Journal of Fisheries Business Administration
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    • v.14 no.1
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    • pp.19-43
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    • 1983
  • Mankind has made traditional use of various ocean resources in such several forms as fish, plants food, means of transportation, and military purpose, followed by the recent exploitation of offshore subsoil or sea-bed minerals, energies, and utilization of ocean space. These available ocean resources come from the marine natural environment which has a distinct feature in view of the relationship between human wants and their capacity to meet them. Though these socially basic resources however bring forth the so-called scarcity or differential rent, their communal nature of ownership dissipates free gifts of nature endowed to society as a whole. Thus to maximize these rents and social welfare thereof, rents should be secured and preserved through a well-defined arrangements of property-ownership as well as appropriate comparison of competing uses of marine resources, taking full cognizance of their irreversible adverse effects of a specific choice on the alternatives. Here I showed the sources of rent yielded from the multiple uses of navigation, fishery, mariculture, minerals, and recreation site, and also summarized the presently widely-known analytic tool to measure these rents with emphasis on due care of the telescopic faulty of the appraiser in charge, viewed from the communal point, Finally, as communal property is in strict sense owned by the public at large, notwithstanding the restricted communal ownership at government or local governments control, effectiveness of competition I expect should be kept while transferring claims of these resources from the legal owner to private enterprise as well as while extracting their rent by her. In particular, various national or social objectives look forward to tile maximization of social efficiency. Discretionary system in noncompetitive method thus, is exceptionally suggested because of probable suspicion from the public whether these resources are transferred as a give away or not in discretion. And these realized rent payments, I propose, should be wisely taken advantage of in advancement of scientific research in marine nature to bring an incremental rent therefrom successively.

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Human Kallikrein-2, Prostate Specific Antigen and Free-Prostate Specific Antigen in Combination to Discriminate Prostate Cancer from Benign Diseases in Syrian Patients

  • Bachour, Dala-Maria;Chahin, Emil;Al-Fahoum, Sahar
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.16
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    • pp.7085-7088
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    • 2015
  • Background: The high incidence of prostate cancer as the most common malignancy in males in many countries raises the question of developing reliable detection tests. The prostate specific antigen (PSA) test is the most widely used for screening for prostate cancer; however, its low specificity elevates the number of unnecessarily biopsies. Serum human kallikrein-2 (hK2) is considered as a promising marker, and especially its ratio to fPSA, for predicting the presence of malignancy to select the best choice referring to biopsy or surveillance. In this study, we investigated the role of hK2 and its combinations with other markers to discriminate prostate cancer from benign diseases in Syrian patients. Materials and Methods: In this prospective oriented cross-sectional cohort study, serum samples were collected from patients referred to many Hospitals in Damascus, Syria, between May 2011 and March 2012, and diagnosed with biopsy proven benign prostate hyperplasia (BPH) or prostate cancer (PCa). Serum was analyzed for hK2, PSA and fPSA, and the ratios of fPSA/PSA and hK2/fPSA were calculated. Results: We found that mean hK2/fPSA ratios were significantly higher (P=0.01) in prostate cancer patients than in the BPH or control groups. Also the ratio hk2/fPSA gave the largest area under the curve (AUC:0.96) which was significantly larger than for fPSA/PSA (AUC:0.41) indicative of higher specificity. Conclusions: Our results demonstrate that the ratio of hK2/fPSA might be superior to the use of fPSA/PSA alone. The hK2 could be shown to enhance the early detection of prostate cancer; especially the ratio hK2/fPSA improves specificity and hence may reduce the number of negative biopsies.

Pollicization of the Middle Finger

  • Bahk, Sujin;Eo, Su Rak;Cho, Sang Hun;Jones, Neil Ford
    • Archives of Reconstructive Microsurgery
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    • v.24 no.2
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    • pp.62-67
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    • 2015
  • Purpose: Pollicization typically involves surgical migration of the index finger to the position of the thumb. This procedure facilitates the conversion of a useless hand into a well-functioning one in patients who are not amenable to the toe-to-hand transfer. However, middle finger pollicization has been rarely reported. Materials and Methods: We reconstructed a thumb by immediate pollicization of the remnants of the middle finger in two patients who sustained a tumor and a trauma, respectively. The former, after cancer ablation was performed, has not been reported literally, and the latter involved free devitalized pollicization of the middle finger using a microsurgical anastomosis. The distal third extensor communis tendon was sutured to the proximal extensor pollicis longus tendon and the distal flexor digitorum superficialis and profundus were sutured to the proximal flexor pollicis longus. The abductor pollicis brevis tendon was sutured to the distal end of the first palmar interosseous muscle. Coaptation of the third digital nerve and the superficial radial nerve branch was performed. Results: Patients showed uneventful postoperative courses without complication such as infection or finger necrosis. Based on the principles of pollicization, a wide range of pinch and grasp movements was successfully restored. They were pleased with the functional and cosmetic results. Conclusion: Although the index finger has been the digit of choice for pollicization, we could also use the middle finger on specific occasions. This procedure provides an excellent option for the reconstruction of a mutilated thumb and could be performed advantageously in a single step.

Rectal Prolapse in Children (어린이 탈직장의 경화요법)

  • Lee, Myung-Duk;Kim, Won-Woo
    • Advances in pediatric surgery
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    • v.1 no.2
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    • pp.133-139
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    • 1995
  • Because rectal prolapse in pediatric age was known to have a self-limitting natural history in weeks to years, this disease is prone to be regarded as a minor condition to the most of surgeons. But to the children and the parents who have to be suffered each time could be a heavy distress. Even though operative or nonoperative methods can be applicable for treatment, the main problem is in surgeon's side, whose preference is based on the experiences of adult patients. The authors have experienced 16 cases of ano-rectal prolapse for 9 years since 1986. Eleven of them were true rectal prolapses. In 7 cases of true type, injection therapy has been tried. One ml of five percent phenol in glycerine was injected into the submucosal layer of the ano-rectal angle level at both lateral and posterior sides. After first trial of each cases, 5 of them were cured completely so far. Recurrences were in two cases, but one of them was temporary to be subsided afterward. Complete bowel cleansing and adequate sedations were required as preoperative preparations. Two days' oral antibiotics and two weeks' laxatives for free of defecation straining were recommended after the procedure. The safety of sclerosis was supported by the experimental histology. In pediatric rectal prolapse, sclerosis seems to be a safe and effective treatment of choice without any significant morbidity.

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Dietary rambutan peel powder as a rumen modifier in beef cattle

  • Ampapon, Thiwakorn;Wanapat, Metha
    • Asian-Australasian Journal of Animal Sciences
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    • v.33 no.5
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    • pp.763-769
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    • 2020
  • Objective: The experiment was conducted to study the effect of rambutan (Nephelium lappaceum) fruit peel powder (RP) on feed consumption, digestibility of nutrients, ruminal fermentation dynamics and microbial population in Thai breed cattle. Methods: Four, 2-year old (250±15 kg) beef bull crossbreds (75% Brahman×25% local breed) were allotted to experimental treatments using a 4×4 Latin square design. Four dietary supplementation treatments were imposed; non-supplementation (control, T1); supplementation of RP fed at 2% of dry matter intake (DMI) (low, T2); supplementation of RP fed at 4% of DMI (medium, T3) and supplementation of RP fed at 6% of DMI (high, T4). All cattle were given a concentrate supplement at 1% of body weight while Napier grass was provided as a free choice. Results: The findings revealed that RP supplementation did not negatively affect (p>0.05) DMI of Napier grass, while RP intake and total DMI were the greatest in the RP supplementation at 4% and 6% DMI. Nevertheless, the nutrients (dry matter, organic matter, crude protein, neutral detergent fiber, and acid detergent fiber) digestibilities were not changed in the RP supplementation groups. Rumen fermentation parameters especially those of total volatile fatty acids, acetate and butyrate were not significantly changed. However, the propionate concentration was remarkably increased (p<0.05) in the RP supplementation. Notably, the ratio of acetate to propionate, the number of protozoa, as well as the methane estimation were significantly reduced in the RP supplemented groups (4% and 6% of DMI), while the counts of bacteria was not altered. Conclusion: Supplementation of RP (4% of DMI) improved rumen propionate production, reduced protozoal population and methane estimation (p<0.05) without a negative effect on feed consumption and nutrients total tract digestibilities in beef cattle. Using dietary rambutan fruit peel powder has potential promise as a rumen regulator.

A Study on the actual conditions of college students′ fast-food use and their likings -Centering around the students in the Uijungbu region- (대학생들의 패스트푸드 이용 실태와 기호도에 관한 연구 -의정부 지역 대학생 중심으로-)

  • 이명호;김동섭
    • Culinary science and hospitality research
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    • v.6 no.3
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    • pp.329-342
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    • 2000
  • The demographic characteristics of research examinees showed that male students were 122(44%) and female ones 155(56%), and teenagers 142 per age. The average monthly pocket money appeared that 96 students received more than 200,000(34.7%) and it was analyzed that 243(87.7%) resided in their homes. The research of fast-food choice factors resulted in the fact that female students who were easily influenced by their friends were 83, while males 57. And, mascom took influence on 40 female students and 20 male ones, besides other included 39 male and 30 female students. They most preferred hamburger and pizza(94) among the fast-food menus, and taste like seasame was most preferred among the characteristic factors of foods taste. And as a result of factor analysis of menu, Cronbach alpha coefficient Fc 2 of reliability appeared highest as 0.7694, next, Fc 3 as 0.6965, and Fc 1 lowest as 0.6403. The reliability among the specific items of this study may be regarded high. And the difference between groups according to gender appeared that Fc 1, Fc 2, and Fc 3 were significantly different at 5% level as a result of T-examination analysis and the distributed analysis of the average monthly pocket money resulted in the fact that the difference between groups appeared significantly at F3 below significant level of 0.05. The testing of the difference of reason why the fast-food is preferred according to frequency of use per week lead to Chi-square value of 41.399 with free degree of 12, so significant degree became 0.000. The zero hypothesis that the two variables are not independent each other is not reserved because it has a small value of signigicant degree below 0.05, and the permanent hypothesis is adopted.

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Socks Design Development Based on Design Preferences Research (디자인 선호도 조사에 의한 양말 디자인 개발)

  • Pan, Rui Nan;Kim, Ji Young
    • Journal of the Korean Society of Costume
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    • v.64 no.4
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    • pp.76-90
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    • 2014
  • The purpose of this study is to develop high-valued added socks by utilizing consumer design preference research in design. The study was performed by investigating literatures including previous studies, and researching the recognition and design preference of consumers. As a final step, socks designs were developed to reflect the results of the research. Gender differences have been found in the choice of socks. Women put more importance to the design, color and trend and prefer geometric, animals and plants patterns, and unique images compared to men. In terms of fashion interest level, 'high' group preferred design, color, and trend than 'middle' and 'low' group, and also preferred geometric, abstract patterns. Women's and unisex socks were designed for people in their 20s, the age group with the highest level of interest in fashion, after taking results of the consumer design preference research into account. Main themes for the lady's socks are 'Soft Shape' and 'Line Composition' in order to express delicate, soft sensibility. For the unisex socks, 'Daydreamer' and 'Free Zone' are the themes used to express young energy and the sense of freedom. 12 styles were developed by creating 3 styles per theme using Photoshop CS5 and Illustrator CS5 programs. As a result, it is confirmed that design strategies in segmented market are necessary for the high-valued added products. Also, the understanding of changes in consumer's tastes and needs through regular market research is needed for the competitive socks design planning.

Seismic Design of Sheet Pile Walls Used in Harbor Construction (항만공사에 이용되는 널말뚝의 내진설계)

  • Kim, Hong Taek;Bang, Yoon Kyung;Kang, In Gyu;Cho, Won Hee
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.11 no.4
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    • pp.171-187
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    • 1991
  • In the present study, an analytical solution method is proposed for the seismic design of cantilever sheet pile walls and anchored sheet pile walls used in harbor construction. Seepage pressures, together with a change in magnitudes of effective horizontal soil pressures, are included in the proposed solution method. Also, the Mononobe-Okabe analysis as well as the Westergaard and Matsuo-Ohara theory of hydrodynamic pressures is used in the proposed method. Further, the choice of values for safety factors is examined for the seismic design of anchored sheet pile walls, and the effects of various parameters(dredge line slope, differential in water levels, anchor position, and wall friction angle) on embedment depth, anchor force, and maximum bending moment are analyzed for anchored walls in dense sand deposits. In addition. the tables that could be used for preliminary seismic design of anchored walls in dense sands are presented. The proposed method deals with the sheet pile walls with free earth support.

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Analysis of computer applications in the 7th high school textbooks on mathematics (제7차 고등학교 수학교과서의 컴퓨터 활용에 관한 분석)

  • 이지연;정유리;이영환
    • Journal of the Korean School Mathematics Society
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    • v.6 no.2
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    • pp.1-19
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    • 2003
  • The challenge of education reform and the demand for textbook revision were inevitable as to help people manage changes in the twenty-first century. The 7th educational program not only has different educational goals, purposes and methods compare to the previous 6th program, but also introduces an epochal plan so called "free-choice learning" which involves considerable choices on the part of the learner as to what and which subject to learn. For the education on mathematics, applying computer and calculators to the studies were one of the goals educational process. This research encompasses ways to approach computer application in the 7th high school s on mathematics. The main contents of our paper are analysis of 16 different kinds of high school textbooks, its status of uses in each textbooks, math relating programs, use of computers, use of programs, use of computers in each textbooks and use of internets.internets.

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Reconstruction of the Shoulder using Rotational Latissimus Dorsi Flap in the Malignant Fibrous Histiocytoma (악성 섬유성 조직구종에서 광배근피판을 이용한 견관절 재건술)

  • Han, Chung-Soo;Chung, Duke-Whan;Lee, Young-Ho;Im, Yang-Jin
    • Archives of Reconstructive Microsurgery
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    • v.10 no.2
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    • pp.111-117
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    • 2001
  • Introduction : The Functional muscle transfer is used to reconstruct the injuried muscle and paralysis of the shoulder. Especially transfer of the trapezius has been the treatment of choice but it has disadvantages of inadequate function and deformed contour, and instability of humeral head in case of acromion resection. We report an operation for shoulder reconstruction after wide resection of malignant fibrous histiocytoma, using rotational latissimus dorsi flap and review the operation method and clinical outcome. Materials and Methods : A patient, 53 year old, with malignant fibrous histiocytoma in the acromioclavicular joint area had been underwent wide excision, including the deltoid, clavicular head of pectoralis major, part of trapezius, lateral 1/3 of clavicle and acromion including scapular spine. The rotational latissimus dorsi flap with its neurovascular pedicle was dissected and then placed over the resected area and transfer of muscle attached at coracoid process was done to achieve stability of the humeral head. The range of motion of the shoulder and test of muscle power were evaluated for functional outcome. Total follow-up period is 2 years 11 months. Results : At last follow-up, the range of motion of the shoulder is abduction $90^{\circ}$, flexion $90^{\circ}$, internal rotation $40^{\circ}$, external rotation $50^{\circ}$ and the muscle power is 4 grade in all direction and then we obtained good functional results. There are no complications such as instability or subluxation of the humeral head and deformed contour and he is a disease-free survival state. Conclusions : The transfered latissimus dorsi flap provides adequate lever arm and stabilization and covering of the humeral head by sufficient muscle volume and width. This procedure can be useful not only for the paralysed deltoid reconstruction but also for use in reconstructive surgery after wide resection of the shoulder for malignant tumor.

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