• Title/Summary/Keyword: grading standard

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Study on the grading standard of Panax notoginseng seedlings

  • Chen, Lijuan;Yang, Ye;Ge, Jin;Cui, Xiuming;Xiong, Yin
    • Journal of Ginseng Research
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    • v.42 no.2
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    • pp.208-217
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    • 2018
  • Background: The quality differences in seedlings of medicinal herbs often affect the quality of medicinal parts. The establishment of the grading standard of Panax notoginseng seedlings is significant for the stable quality of medicinal parts of P. notoginseng. Methods: To establish the grading standard of P. notoginseng seedlings, a total of 36,000 P. notoginseng seedlings were collected from 30 producing areas, of which the fresh weight, root length, root diameter, bud length, bud diameter, and rootlet number were measured. The K-means clustering method was applied to grade seedlings and establish the grading standard. Results: The fresh weight and rootlet number of P. notoginseng seedlings were determined as the final indices of grading. P. notoginseng seedlings from different regions of Yunnan could be preliminarily classified into four grades: the special grade, the premium grade, the standard grade, and culled seedlings. Conclusion: The grading standard was proven to be reasonable according to the agronomic characters, emergence rate, and photosynthetic efficiency of seedlings after transplantation, and the yields and contents of active constituents of the medicinal parts from different grades of seedlings.

Development of Standard Sizing System and Grading Rule according to Body Types for Manufacturing Clothing of Elderly Women (노년여성의 의복제작을 위한 체형별 치수 및 그레이딩 체계에 관한 연구)

  • Lee, Jeong-Yim;Joo, So-Young
    • Fashion & Textile Research Journal
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    • v.6 no.4
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    • pp.475-484
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    • 2004
  • The purpose of this study was to suggest the standard sizing system and grading rules according to body types of elderly women. The data were the anthropometric measurements of 329 women aged 60 and older measured in 2001. To determine the effective and useful clothing sizing system, the distribution of hip girth and bust girth of 3 body types which were suggested in KS K 0055 was analyzed, and the significant difference among adjoining hip girth ranges was analyzed, too. And the sizes of major body parts that were used for manufacturing clothing were made to have regular interval between each clothing sizes. From this study, we certified that each different sizing system for 3 body types to manufacture more suitable clothing for elderly women was necessary and suggested the standard size for each body type. And we also suggested the patternmaking sizes that were needed to manufacture ready-made clothing. On the basis of standard size, we suggested the grading rules for 3 body types. And we verified the propriety of the grading rules for 3 body types through the fitting test, and we knew that the grading rules for 3 body types of this study was very useful to manufacture clothing for elderly women.

A Study on Verification of Shoe Last Grading System Based on Foot Measuring Data (발계측 자료에 기초한 신골 할출 시스템의 검증에 관한 연구)

  • Park, Hae-Soo
    • Journal of the Ergonomics Society of Korea
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    • v.26 no.1
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    • pp.71-77
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    • 2007
  • Shoe's size and shape are determined by the last that takes shape of foot because last is the mold of shoe in development and manufacturing process. Then adaptation between foot and shoe is dependent on the last. In mass shoe production, model size is developed in the first place, other sized lasts are made through the grading process based on model size. The most important factor in grading system is grading deviation that must be same amount induced from foot measuring database. At present, most of the last manufacturing companies in korea using 260mm as a standard foot model size. When length grading deviation is 5mm, the ball girth grading deviation is 3.7mm and the ball width grading deviation is 1.2mm. I verified existing grading system by comparing grading results with foot measuring data. Also, I proposed reasonable grading deviation and application method of grading system. From the analysis of foot measuring database, reasonable grading deviations are 1.22mm in ball width and 0.84mm in ankle height in case of length grading deviation is 5mm. I confirmed that the current grading system is very accurate. When we grade last from 230mm to 290mm by current grading system based on model size 260mm, there is grading error over 1mm in the front outside area of foot. This error level of 1mm is no problem in normal walking shoe's last, but it induces adaptation problems in sports and special purposed shoe's last. Therefore using of three standard model size is recommended in grading men's last for reducing grading deviation error under the level of 1mm. It is specifically described as 235mm in 225-245mm, 260mm in 250-270mm, 285mm in 275-295mm. According to the above recommended grading system, it is enough to measure only three foot sizes in case of foot measuring project for men's last development.

A study of facial nerve grading system (구안와사(口眼喎斜)의 평가방법(評價方法)에 대한 고찰(考察))

  • Kim, Jong-In;Koh, Hyung-Kyun;Kim, Chang-Hwan
    • Journal of Acupuncture Research
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    • v.18 no.2
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    • pp.1-17
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    • 2001
  • Background and Objetive : Lack of uniformity in reporting facial nerve recovery in patients with facial nerve paralysis has been a major disadvantage in comparing treatment modalities. The objective evaluation of facial nerve function is a complex procedure. The House and Brackmann grading system, the Yanagihara grading system has been recommend as a universal standard for assessing the degree of facial nerve palsy. However, clinical studies for treatment of facial palsy have rarely used this universal standard in oriental medicine. That is the reason for analysing this facial nerve grading system. Material and Method : We choose 10 scales reported from 1955 till 1995. These facial nerve grading systems may be classified as Gross system, Regional system and Specific system. Result and Conculsion : The scales of Botmann and Jonkees, May, Peitersen, and House and Brackmann are the gross facial nerve grading systems with which we grossly assess the facial motor dysfunction and the secondary defect. Among these scales, H-B scale is the most widespred The scales of Yanagihara(若杉文吉), Smith, Adour and Swanson, Jassen, FEMA are the regional facial nerve grading system in which we weight, or unweight the facial motor dysfunction and the secondary defect. For example, the scales of Yanagihara(若杉文吉) and Smith are the unweighted regional scale, the scale of Adour and Swanson, Jassen, FEMA are the weighted regional grading system. The scale of Stennert is the Specific facial nerve grading system in which we respectively assess the grade of facial dysfunction at rest, in motion and the secondary defect. For the objective evaluation of the oriental medicine treatment for facial palsy, we must use the universal standard scale, i.e. the H-B scale, the Yanagihara scale.

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Study on the development of pattern and grading rule of slacks (20대 여성의 기성복 슬랙스 패턴 및 그레이딩 룰 연구)

  • Park, Woo-Mee;Wee, Eun-Ha;Kim, Yoon-Wha;Park, Choon-Duk
    • Korean Journal of Human Ecology
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    • v.8 no.4
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    • pp.13-22
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    • 2005
  • The purpose of this study was to develop pattern and grading method of slacks of adults women of standard somatotype to prove fitness of lower body shape. The results of this study can be summarized as follows: 1. the 4 pattern were compared by the sensory evaluation to choose which one is more appropriate to this research. The slacks pattern developed by modification from L method. 2. The results of the sensory evaluation have down that the new slacks pattern have better fit than the traditional pattern. 3. The standard sized patterns were graded using Moonwha grading rule as a traditional one and the new grading rule. The new grading rule was developed by fitting the slacks which were made by traditional grading rule. 4. The results of the sensory evaluation have down that the slacks made by the new grading rule developed in this work have better fit than the ones made by the traditional grading rule.

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Measurement of Physical Properties of Korean Garlic for Grade Standard

  • Hong, J.H.;Koh, H.K.
    • Agricultural and Biosystems Engineering
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    • v.3 no.1
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    • pp.1-9
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    • 2002
  • Garlic is one of the major seasoning vegetables in Korea and consumed mostly in a form of peeled cloves. Conventional Korean standards for garlic grading consist of four classes according to the size of bulb and its shape. Sorting and grading of garlic are manually done but could be in the process of automated mechanization using machine vision system in the near future. The proportion of mass of cloves in a garlic bulb to the volume of the bulb (g/ml) was determined to find out the best way of representing both the quantity and quality of cloves in each bulb. Garlic bulb was assumed as an ellipsoid and its major and minor axis and its height were measured to calculate its volume. The mass proportions and density of a garlic bulb and cloves were measured for four domestic varieties of garlic to propose it as a standard for Korean garlic grading machine.

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The Grading of Fine Aggregate Affecting on Compressive Strength of Concrete - Based Product Having Low W/C (낮은 물시멘트비를 갖는 콘크리트 제품의 압축강도에 미치는 잔골재의 입도분포)

  • 곽은구;주지현;조성현;김진만
    • Proceedings of the Korea Concrete Institute Conference
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    • 2001.11a
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    • pp.89-92
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    • 2001
  • Because the grading of aggregate is major factor affecting on compressive strength and durability of concrete, the standard specification of concrete has proposed that the standard grading should be used to make ordinary concrete having good quality. But, it is not suitable for making product having low W/C because of difference between them in manufacturing processes and demanded efficiencies. This study investigated if the grading of the fine aggregate affects on tamping efficiency and compressive strength of concrete-based product. The results of this study showed that the suitable grading for making concrete-based product ranged from C type(FM:2.77) to D type(FM:3.38).

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A Modified Length-Based Grading Method for Assessing Coronary Artery Calcium Severity on Non-Electrocardiogram-Gated Chest Computed Tomography: A Multiple-Observer Study

  • Suh Young Kim;Young Joo Suh;Na Young Kim;Suji Lee;Kyungsun Nam;Jeongyun Kim;Hwan Kim;Hyunji Lee;Kyunghwa Han;Hwan Seok Yong
    • Korean Journal of Radiology
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    • v.24 no.4
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    • pp.284-293
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    • 2023
  • Objective: To validate a simplified ordinal scoring method, referred to as modified length-based grading, for assessing coronary artery calcium (CAC) severity on non-electrocardiogram (ECG)-gated chest computed tomography (CT). Materials and Methods: This retrospective study enrolled 120 patients (mean age ± standard deviation [SD], 63.1 ± 14.5 years; male, 64) who underwent both non-ECG-gated chest CT and ECG-gated cardiac CT between January 2011 and December 2021. Six radiologists independently assessed CAC severity on chest CT using two scoring methods (visual assessment and modified length-based grading) and categorized the results as none, mild, moderate, or severe. The CAC category on cardiac CT assessed using the Agatston score was used as the reference standard. Agreement among the six observers for CAC category classification was assessed using Fleiss kappa statistics. Agreement between CAC categories on chest CT obtained using either method and the Agatston score categories on cardiac CT was assessed using Cohen's kappa. The time taken to evaluate CAC grading was compared between the observers and two grading methods. Results: For differentiation of the four CAC categories, interobserver agreement was moderate for visual assessment (Fleiss kappa, 0.553 [95% confidence interval {CI}: 0.496-0.610]) and good for modified length-based grading (Fleiss kappa, 0.695 [95% CI: 0.636-0.754]). The modified length-based grading demonstrated better agreement with the reference standard categorization with cardiac CT than visual assessment (Cohen's kappa, 0.565 [95% CI: 0.511-0.619 for visual assessment vs. 0.695 [95% CI: 0.638-0.752] for modified length-based grading). The overall time for evaluating CAC grading was slightly shorter in visual assessment (mean ± SD, 41.8 ± 38.9 s) than in modified length-based grading (43.5 ± 33.2 s) (P < 0.001). Conclusion: The modified length-based grading worked well for evaluating CAC on non-ECG-gated chest CT with better interobserver agreement and agreement with cardiac CT than visual assessment.

A Study on the Junior-High School Girls' Slacks Pattern Grading by Using Apparel CAD System (CAD 시스템을 활용한 여중생의 슬랙스 패턴 그레이딩에 관한 연구)

  • 임지영
    • Journal of the Korean Home Economics Association
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    • v.40 no.11
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    • pp.1-9
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    • 2002
  • Nowadays, the use of apparel CAD system is important to the mass production of ready to wear Especially, computer-based grading is the most important process to improve the fitness of clothes and to reduce the time needed to make patterns of several sizes. The purpose of this study was to suggest a standard sizing system for junior-high school girls' lower clothes and to suggest a grading method according to the sizing systems. The subjects were 402 junior-high school girls of 13 to 15 year's-old. The size intervals of waist girth and hip girth were 3㎝ and 4㎝ respectively. The sizing system, which had frequencies more than 4.5%, was classified 8 cases. For regular grading, two types of group were classified into 58-82/61-86/64-90/67-94 and 61-82/64-86/67-90/70-94. Among them, 61-86 and 64-86 size were adopted the basic size for the development of grading. According to the sizing system, hand-made patterns were manufactured. By measure of the each part of the slacks, new grading rule patterns were developed by each size. A new grading rule was different from the Moonwha grading rule. This result will contribute to clothing fitness of consumer and the amount of production.

A Study on Grading Practices of Men's Pants in Apparel Industry (기성복 남자 바지 패턴 그레이딩에 관한 연구 -35-55세를 중심으로-)

  • Kyung, Yoon-Mi
    • Fashion & Textile Research Journal
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    • v.13 no.6
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    • pp.934-942
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    • 2011
  • This study was intended to analyze conventional grading increments and methods for middle-age men's pants, and to suggest new grading guidelines that will enable to improve satisfaction with size and silhouette as a result of combining the concept of grading, which help maintain the ratio and proportion by sizes as one of ready-made apparel's advantages, with body form oriented and aesthetic approaches. In the apparel industry, the current sizing specifications and methods adopted by relevant companies, as well as the characteristics of body forms of men aged 35 to 55 years were comparatively analyzed to find out problems and ultimately to suggest their solutions or improvements. It was considered that as the conventional grading practices used in the industry were customary on the basis of the past experiences, it was required to take the body forms of target consumers into account and also, to reconsider the conventional grading methods. Analyses of sizing and specifications by brands show that 4 to 19 sizes including 82 or 84 as standard size have been produced. Since men's apparel has a large number of sizes with the large range of sizes, grading is critically important. As silhouettes depend on the distribution of grading rule values at each point of increment pattern in the main regions during grading, it is necessary to consider both size grading and form variations. To maintain an appropriate silhouette with keeping the angle of center back line of a pattern, it is desirable to set the ratio of side line part to center part from the crease line to approximately 3:7. It is required to diversify the values of grading rules according to different sizes and pattern regions in consideration for the body forms of key consumers. In addition, if the natural lines of designs and patterns for the width increments of waist circumference and hip circumference, the increments of hip width in pant's front and back panels, the ratio of grading rule values of the right and left sides of crease line, knee circumference, thigh circumference and so on are taken into account, grading will be satisfactory in the all aspects of size, silhouette and ratio.