• Title/Summary/Keyword: quality grade A

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Evaluation of Offshore Water Quality by Bioassay Using the Gametes and Embryos of Sea Urchins (성게 알을 이용한 생물검정에 의한 연안해수 수질평가에 관한 연구)

  • Yu, Chun-Man
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.3 no.3
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    • pp.170-174
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    • 1998
  • The water quality of offshore waters around the Korean coast was evaluated by bioassay using gametes, embryoss and early development systems of a sea urchin species Hemicentrotus pulcherrimus. The results show that despite the inflows of several river systems, the west coast maintain the grade II water. This is thought to be due to the decrease in pollutant input resulting from the purification of inflow rivers (e.g., the control of waste water discharge and the construction of sewage treatment facilities), and the dilution of pollutants by a strong tidal mixing with a large difference between the ebb and flood tides. However, Asan, Hampyong and Chonsu bays, where circulations of water are relatively poor, and the Kunsan and Mokpo harbors which are influenced by pollutants from neighboring cities have shown the grade III water. The south coast has maintain the grade II or III because developments of sea urchins were moderately or strongly inhibited. Also, Kangjin, Duekryang, Kwangyang, Masan, and Jinhae bays where water circulations are relatively poor, show the grade III water, with strong inhibitions of the early development of sea urchins. The east coast has maintained the grade I and II due to monotonous coastlines and smooth circulation of sea water. However, Chongcho Lake shows the worst water quality due to the breakwater which is constructed to maintain port functions.

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Prioritization of Alternatives by Quantifying the Effect on Water Quanity and Quality using PCSWMM (PCSWMM 모형의 수량 및 수질 측면의 효과분석 결과를 이용한 대안의 우선순위 제시)

  • Hong, Won-Pyo;Chung, Eun-Sung;Kim, SangUg;Park, Kyung-Shin;Lee, Kil Seong
    • Journal of Korean Society on Water Environment
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    • v.25 no.1
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    • pp.37-47
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    • 2009
  • This study analyzes the effect of alternatives and estimates alternatives evaluation index (AEI) using PCSWMM and weighted summation method. PCSWMM considering combined sewer overflows (CSOs) in the Mokgamcheon watershed was used and effectiveness analysis of alternative was conducted to develop not only flowrate but also the pollutant of BOD and SS. Indicators of AEI are selected using sustainability evaluation concept, driver-pressure-state-impact-response (DPSIR) framework and calculated by weighted summation method. After estimating AEI, alternatives was classified into three groups G (Good), A (Acceptable) and P (Poor) grade. As a results, it is analyzed that alternatives applied to Oryucheon were G grade and those of Yeokgokcheon were P grade and the remainings were 'A' grade. This result will be effective to the integrated watershed management for sustainablility.

Effect of Yukmijihwangtang meal silage on the performance of hanwoo steers (육미지황탕박을 이용한 TMR의 급여가 한우의 생산성에 미치는 영향)

  • Cha, Sang-Woo;Oh, Hyun-Min;Park, No-Sung;Cho, Chi-Hyun;Lee, Bong-Duk;Lee, Hyung-Seok;Lee, Soo-Kee
    • Korean Journal of Agricultural Science
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    • v.38 no.2
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    • pp.263-268
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    • 2011
  • This experiment was conducted to investigate the effect of feeding TMR with or without Yukmijihwangtang meal silage on the growth performance, meat yield and quality of Hanwoo steers. Sixteen male Hanwoo steers in the late fattening period were randomly assigned to a control diet and Yukmijihwangtang meal diet, with eight heads per treatment. The supplementation of Yukmijihwangtang meal silage did not affect the feed conversion rate, ribeye area, and meat yield index of cold carcass of Hanwoo. Fat thickness of Hanwoo s loin obtained from silage supplementation was significantly lower than that of non-supplemented. Total grade in meat yield of Hanwoo from silage supplementation were higher than that of non-supplemented control. The supplementation of Yukmijihwangtang meal silage to Hanwoo decreased the marbling score significantly, but did not affect fat color, firmness, and maturity. Total grade of meat quality of Hanwoo with Yukmijihwangtang meal supplementation was lower than that of non-supplemented control. In conclusion, Yukmijihwangtang meal could be used as partial substitution (10%) in TMR for fattening cattle. However, it is considered that Yukmijihwangtang meal can be a useful feed for the periods of growing or early fattening than that of late fattening since it improved meat yield but decreased meat quality grade of Hanwoo steers.

Effectiveness of Medical Education Assessment Consortium Clinical Knowledge Mock Examination (2011-2016) (2011-2016년 의학교육평가컨소시엄 임상종합평가의 효과성)

  • Lee, Sang Yeoup;Lee, Yeli;Kim, Mi Kyung
    • Korean Medical Education Review
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    • v.20 no.1
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    • pp.20-31
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    • 2018
  • Good assessment is crucial for feedback on curriculum and to motivate students to learn. This study was conducted to perform item analysis on the Medical Education Assessment Consortium clinical knowledge mock examination (MEAC CKME) (2011-2016) and to evaluate several effects to improve item quality using both classical test theory and item response theory. The estimated difficulty index (P) and discrimination index (D) were calculated according to each course, item type, A (single best answer)/R (extended matching) type, and grading of item quality. The cut-off values used to evaluate P were: >0.8 (easy); 0.6-0.8 (moderate); and <0.6 (difficult). The cut-off value for D was 0.3. The proportion of appropriate items was defined as those with P between 0.25-0.75 and D ${\geq}0.25$. Cronbach ${\alpha}$ was used to assess the reliability and was compared with those of the Korean Medical Licensing Examination (KMLE). The results showed the recent mean difficulty and decimation index was 0.62 and 0.20 for the first MEAC CKME and 0.71 and 0.19 for the second MEAC CKME, respectively. Higher grade items evaluated by a self-checklist system had better D values than lower grade items and higher grade items gradually increased. The preview and editing process by experts revealed maintained P, decreased recall items, increased appropriate items with better D values, and higher reliability. In conclusion, the MEAC CKME (2011-2016) is deemed appropriate as an assessment to evaluate students' competence and prepare year four medical students for the KMLE. In addition, the self-checklist system for writing good items was useful in improving item quality.

The Impact of Long-term Care Insurance on Medical Utilization and Medical Cost in South Korea (노인장기요양보험 서비스 이용에 따른 의료이용 및 의료비 지출 양상의 변화)

  • Kang, Hee-Jin;Jang, Suhyun;Jang, Sunmee
    • Health Policy and Management
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    • v.32 no.4
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    • pp.389-399
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    • 2022
  • Background: This study aimed to analyze changes in medical utilization and cost before and after long-term care (LTC) implementation. Methods: We used the National Health Information Database from National Health Insurance Service. The participants were selected who had a new LTC grade (grade 1-5) for 2015. Medical utilization was analyzed before and after LTC implementation. Segmented regression analysis of interrupted time series was conducted to evaluate the overall effect of the LTC implementation on medical costs. Results: The total number of participants was 41,726. A major reason for hospitalization in grade 1 was cerebrovascular diseases, and dementia was the top priority in grade 5. The proportion of hospitalization in grade 1 increased sharply before LTC implementation and then decreased. In grade 5, it increased before LTC implementation, but there was no significant difference after LTC implementation. As for medical cost, in grades 1 to 4, the total cost increased sharply before the LTC implementation, but thereafter, changes in level and trend tended to decrease statistically, and for grade 5, immediately after LTC implementation, the level change was decreasing, but thereafter, the trend change was increasing. Conclusion: Long-term care grades showed different medical utilization and cost changes. Long-term care beneficiaries would improve their quality of life by adequately resolving their medical needs by their grades.

The Effects of Family Risk Factors, Ego-Resilience and Quality of Peer Relationships on Adolescent Problem Behaviors (가정의 위험요인, 자아탄력성 및 또래관계의 질이 청소년의 문제행동에 미치는 영향)

  • Han, Hyun-A;Doh, Hyun-Sim
    • Korean Journal of Child Studies
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    • v.29 no.1
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    • pp.87-101
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    • 2008
  • This study examined the influence of family risk factors, ego-resilience, and quality of peer relationships on adolescent problem behaviors in a sample of 335 8th grade students (178 boys and 157 girls). They responded to four kinds of questionnaires. Data were analyzed by independent t-tests, correlations, and multiple regressions. Results showed that family risk factors had direct effects on ego-resilience which directly affected quality of peer relationships. Family risk factors, ego-resilience and quality of peer relationships had direct effects on internalizing problem behaviors. Family risk factors and quality of peer relationships had direct effects on externalizing problem behaviors. Family risk factors indirectly influenced adolescent internalizing/externalizing problem behaviors through ego-resilience and quality of peer relationships.

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Effects of Sex and Market Weight on Performance, Carcass haracteristics and Pork Quality of Market Hogs

  • Piao, J.R.;Tian, J.Z.;Kim, B.G.;Choi, Y.I.;Kim, Y.Y.;Han, In K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.17 no.10
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    • pp.1452-1458
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    • 2004
  • An experiment was conducted to examine the effects of sex and market weight on performance, carcass characteristics and pork quality. A total of 224 crossbred pigs (initially 26.64 kg BW) were allotted in a $2{\times}4$ factorial arrangement in a randomized complete block (RCB) design. The variables were sex (gilts and barrows) and different market weights (100, 110, 120 and 130 kg). Average daily gain (ADG) and average daily feed intake (ADFI) were significantly higher (p<0.01) in barrows than gilts, ADFI and feed conversion ratio (FCR) increased as body weight increased (p<0.05). Gender differences were observed in carcass characteristics. Backfat thickness and drip loss were greater in barrows (p<0.01), while loin eye area (p<0.01), flavor score (p<0.05) and lean content (p<0.001) were higher in gilts. Carcass grade and water holding capacity were the highest in 110 kg market weight pigs. The 100 kg arket weight pigs showed lower juiciness, tenderness, shear forces and total palatability than the other market weights (p<0.01). Hunter values (L*, a* and b*) were increased as market weight increased (p<0.05). Hunter a* value was greater in gilts (p<0.01) but L* value and b* value were not affected by sex of pigs. Net profit [(carcass weight${\times}$price by carcass grade)-(total feed cost+cost of purchased pig)] was higher in gilts than barrows (p<0.01), and was higher (p<0.05) in the pigs marketed at 110 and 120 kg market weight compared with 100 kg market weight. These results demonstrated that gilts showed higher carcass characteristics, pork quality, feed cost per kg body weight gain and net profit compared with barrows. Moreover, 110 or 120 kg body weight would be the recommended market weight based on pork quality and net profit for swine producers.

Digital Image Quality Assessment Based on Standard Normal Deviation

  • Park, Hyung-Ju;Har, Dong-Hwan
    • International Journal of Contents
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    • v.11 no.2
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    • pp.20-30
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    • 2015
  • We propose a new method that specifies objective image quality factors by evaluating an image quality measurement model using random images. In other words, No-Reference variables are used to evaluate the quality of an original image without using any reference for comparison. 1000 portrait images were collected from a web gallery with votes constituting over 30 recommendation values. The bottom-up data collecting process was used to calculate the following image quality factors: total range, average, standard deviation, normalized distribution, z-score, preference percentage. A final grade is awarded out of 100 points, and this method ranks and grades the final estimated image quality preference in terms of total image quality factors. The results of the proposed image quality evaluation model consist of the specific dynamic range, skin tone R, G, B, L, A, B, and RSC contrast. We can present the total for the expected preference points as the average of the objective image qualities. Our proposed image quality evaluation model can measure the preferences for an actual image using a statistical analysis. The results indicate that this is a practical image quality measurement model that can extract a subject's preferred image quality.

Design Guideline Corresponding to Housing Performance Grade Indication System (주택성능등급 표시제도에 대응한 설계 가이드라인)

  • Park, Hyun-Su;Ko, Kwang-Il;Lee, Chan-Sik
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2006.11a
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    • pp.396-401
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    • 2006
  • A "Housing Performance Grade Indication System" that is bound to present the grade in housing designs has been executed since January 2006 in order to build sustainable housing and supply high quality housing. Thus, users are able to select their housing based on certain comparisons in housing performances, and providers can be exactly evaluated using precise standards according to the execution of this system. The objective of this study is to propose a guideline in designs according to the grade of housing as a reasonable decision making tool in order to obtain a high grade in housing performance grades under the execution of the "Housing Performance Grade Indication System". In order to perform this goal, this study examines the performance evaluation item and evaluation guidelines in the "Housing Performance Grade Indication System" and analyzes relative systems and guidelines executed in the present time to investigate certain relativeness for this system. The housing performance evaluation item can be classified four different categories according to the characteristics of evaluation guidelines. Then, the system of a design guideline is configured to propose a reasonable design guideline according to the grade of housing performances. It is evident that the design guideline proposed in this paper will support the reasonable decision making to obtain a high grade in housing performances for the designer and constructor in the process of a housing project.

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Development of a Quality Evaluation Tool for Aneurysmal Subarachnoid Homorrhage Patient Care (뇌 동맥류성 지주막하출혈 환자간호의 질 평가 도구 개발)

  • Bae, So-Hyun;Shin, Sung-Rae
    • Korean Journal of Adult Nursing
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    • v.15 no.4
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    • pp.628-638
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    • 2003
  • Purpose: The purpose of this study was to develope a evaluation tool of the quality of nursing care for aneurysmal subarachnoid hemorrhage patients at Hunt & Hess Grade I~III. Method: The data was gathered from April 15, 2002 to June 14, 2002. The tool proceeded in six steps according to Bloch's framework. Result: The results of this study are as follows: 1) The quality evaluation tool for neurosurgery ICU consisted of 25 standards and 138 criteria. The quality evaluation tool for ward consisted of 27 standards and 144 criteria.; 2) The content validities of the tools for neurosurgery ICU and ward were 0.96 and 0.98, respectively.; 3) The Pearson coefficients for evaluating the interrated reliability of the tools for neurosurgery ICU and ward were r=0.9106 (p<0.1) and r=0.8807 (p<0.1), respectively.; 4) The ranges of corrected item-total correlations for evaluating the construct validity of the tools for neurosurgery ICU and ward were 0.0279~0.9354 and 0.0174~0.9682, respectively.; And 5) The ranges of Cronbach's ${\alpha}$ reliabilities for evaluating the internal consistency reliability of the tools for neurosurgery ICU and ward were 0.6040~0.8554 and 0.6212~0.9584, respectively. Conclusion: The tools developed in this study seem useful in evaluating the quality of nursing care for aneurismal subarachnoid hemorrhage patients at Hunt & Hess Grade I-III.

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