• Title/Summary/Keyword: cross adaptation

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Ecotypic Variation in Salinity Responses of Ulva pertusa(Chlorophyta) from the Korean Coast

  • Kim, Kwang-Young;Suh, Hae-Lip
    • Journal of the korean society of oceanography
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    • v.31 no.1
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    • pp.1-6
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    • 1996
  • Salinity ecotypes in Ulva pertusa Kjellman were examined for the growth responses of the three isolates taken from different salinity regimes. All isolates showed a broad salinity tolerance, but growth patterns were correlated with the salinity regime of their original habitat. The germlings from Anin exhibited optimum growth at the native salinity of 32%. The germlings from Yongyon which had hypersaline habitats were tolerable to high salinity, i.e. growth rates peaked at 40%, whereas those from Samgando which had low salinities achieved maximum growth rate at 24\%. The germlings of inter-isolate cross demonstrated intermediate growth response between that of their respective parents. Our data also clearly indicated intraspecific differences among the three isolates, which was interpreted as development of different physiological ecotypes. We conclude that U. pertusa may consist of several ecotypes, each of which has some capacity for physiological adaptation to salinity variations.

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Flow Routing in Prismatic Symmetrical Compound Channels by Applications of the Apparent Shear Force (ASF)

  • Chun, Moo-Kap;Jee, Hong-Kee
    • Korean Journal of Hydrosciences
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    • v.8
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    • pp.41-56
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    • 1997
  • A new routing computer model for the symmetric compound channel called the ASRMCS(Apparent Shear Force Muskingum-Cunge Method in Symmetry) has been developed. The Muskingum-Cunge routing method is adapted. The Apparent Shear Force (ASF) between the deep main channel and the shallow floodplan flow is introduced while the flow is routed. The nonlinear parameter method is applied. The temporal and spatial increments are varied according to the flow rate. The adaptation of above schemes is tested against the routed hydrographs using the DAMBRK model. The results of general routing practice of Muskingum-Cunge Method(GPMC) are also compared with those of above two models. The results of the new model match remarkably well with those of DAMBRK. The routed hydrographs show a smooth variation from the inflow boundary condition without any distortions caused by the difference of cross-section shape. However, the results of GPMC, showing early rise and fall of routed hydrograph, have considerable differences from those of the ASFMCS and DAMBRK.

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Farmers' Perceptions and Knowledge of Cattle Adaptation to Heat Stress and Tick Resistance in the Eastern Cape, South Africa

  • Katiyatiya, C.L.F.;Muchenje, V.;Mushunje, A.
    • Asian-Australasian Journal of Animal Sciences
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    • v.27 no.11
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    • pp.1663-1670
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    • 2014
  • The objective of this study was to determine the perceptions and knowledge of farmers of heat stress and tick resistance in cattle. A cross-sectional survey was conducted and 110 farmers in four villages in the sour and sweet velds of the Eastern Cape Province, South Africa were interviewed. The associations among area (municipality), gender, age, level of education, employment and religion were computed using Chi-square tests. The majority of the respondents had on average 4 bulls, 4 cows, 4 heifers, 4 calves, and 4 oxen. Milk was considered as the major (28.3%) reason for keeping cattle. Most farmers owned non-descript (72.6%), and Nguni (45.3%) cattle because of their heat tolerance (54.7%), tick resistance (54.7%), and milking ability (28.2%) traits. Excessive panting (56.6%) and disease transmission (76%) were regarded as the major effects of heat stress and tick infestation in cattle, respectively. About 50% of the respondents agreed that hair length influences tick resistance and 47.17% considered coat colour when acquiring cattle. In the sampled areas, ticks were prevalent in the summer season (93%), and 77.36% of the respondents use acaricides every fortnight. Gall sickness was reported to be a major problem in the cattle herds by 36.79% of the respondents. Our results showed that farmers in the two municipalities had knowledge of cattle adaptation to heat stress and tick resistance.

The effect of occlusogingival placement of clinical bracket points on the adaptation of a straight wire to the lingual arch form

  • Abdi, Amir Hossein;Motamedian, Saeed Reza;Balaghi, Ehsan;Nouri, Mahtab
    • The korean journal of orthodontics
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    • v.48 no.4
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    • pp.236-244
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    • 2018
  • Objective: The aim of this study is to compare the adaptation of a straight wire between brackets positioned at the mid-lingual surface and those placed gingivally by using a three-dimensional simulation software. Methods: This cross-sectional study was performed using OrthoAid, an in-house software. The subjects were 36 adolescents with normal Class I occlusion. For each dental cast, two bracket positioning approaches, namely the middle and gingival, were examined. In the middle group, the reference points were placed on the mid-lingual surface of each tooth, while in the gingival group, the reference points were positioned lingually on the anterior teeth. A 4th degree polynomial was adopted, and the in-plane and off-plane root mean squares (RMSs) of the distances between the reference points and the fitted polynomial curve were calculated using the software. Statistical analysis was performed using the paired-samples t-test (${\alpha}=0.05$). Results: The mean in-plane RMS of the polynomial curve to the bracket distance in the gingival group was significantly lower than that in the middle group (p < 0.001). The off-plane RMS was higher in the gingivally positioned brackets in the maxilla than in the middle group (p < 0.001). However, the off-plane RMS in mandible was not statistically significantly different between the two groups (p = 0.274). Conclusions: The results demonstrated that the gingival placement of lingual brackets on the anterior teeth could decrease the distance between a tooth and the straight wire.

Cultural Adaptation and Reliability Testing of Korean Version of the World Health Organization Disability Assessment Schedule 2.0 : 12-item versions (세계보건기구 기능제약평가목록 2.0 : 12항목-버전의 한글도구 개발과 신뢰도 검사)

  • Lee, Hae-Jung;Kim, Da-Jeong
    • Journal of the Korean Society of Physical Medicine
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    • v.6 no.4
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    • pp.475-488
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    • 2011
  • Purpose: The aims of the study were to develop and to establish reliability in Korean versions of World Health Organization Disability Assessment Schedule 2.0(KWHODAS 2.0): 12 item-self(12-self) and 12 item-interviewer(12-interviewer) versions. Methods: KWHODAS 2.0: 12-item versions were developed in idiomatic modern Korean with a process involving independent translation, synthesis of the translations, independent back translation, and review by an expert committee to achieve equivalence with the original English. 88 participants were included in the study. 33 of participants filled the 12-self version twice to examine test-retest reliability and 55 of participants were assessed simultaneously by four interviewers using the 12-interviewer version. Intra-rater reliability was evaluated using the intra-class correlation coefficient(ICC) and inter-rater reliability was evaluated using both the ICC and k statistic. Results: Test-retest reliability for the 12-self version was excellent with $ICC_{(2,1)}$ value ranged from 0.94(CI 0.88-0.98) to 0.96(CI 0.90-0.98). Inter-rater reliability for the 12-interviewer version showed excellent agreement with $ICC_{(2,1)}$ from 0.94(CI 0.91-0.96) to 1(CI 1.0-1.0). K value was observed from 0.95 to 1. Conclusion: KWHODAS 2.0: 12-self and 12-interviewer versions were successfully translated and both scales showed excellent reliability. It is now suitable for use in clinical and research applications.

A Study on the Plan of Social Welfare Practice a Case Study on Adaptation of Family Life to Married Women Migrant (결혼이주 여성의 가정생활 적응 사례연구를 통한 사회복지실천의 방안에 관한 연구)

  • Heo, Myeong-Jun
    • Industry Promotion Research
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    • v.5 no.1
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    • pp.107-115
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    • 2020
  • This study is to find social welfare practices that married women migrant can provide to them in order to relieve the stress of cultural differences and enjoy a good family life. Results,First, action plans to overcome intercultural differences are needed. To overcome effective cross-cultural differences, interventions and goals are set for culturally diverse clients that match their racial, cultural, ethnic, gender and sexual orientation.Second, it is necessary to cultivate professional education personnel. In order to train professionals, cultural diversity should be addressed in existing social welfare courses.Third, the related laws need to be rearranged. The Multicultural Family Support Act continues to emerge as a need for supplementation, including the understanding of Korean family culture and the lack of counseling for immigrant women.As a result, married women immigrants recognize that Korean life is different from their own in many aspects of their daily lives, so they endeavor to have a lot of patience and high level of effort in the adaptation process. Therefore, there is a need for a social welfare practice that can support this.

Rice genotype, parental lineage and physiological tolerance to soil salinity shapes the community structure of rice seed bacterial endophytes

  • Walitang, Denver I.;Kim, Kiyoon;Chatterjee, Poulami;Kang, Yeongyeong;Sa, Tongmin
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2017.06a
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    • pp.342-342
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    • 2017
  • Rice seeds are a home to endophytic bacterial communities which serve as a source of the plant's endophytes. As rice undergo physiological and adaptive modifications through cross breeding in the process of attaining salinity tolerance, this may also lead to changes in the endophytic bacterial community especially those residing in the seeds. This study explores the community structure of seed bacterial endophytes as influenced by rice parental lineage, genotype and physiological adaptation to salinity stress. Endophytic bacterial diversity was studied through culture dependent technique, cloning and Terminal-Restriction Fragment Length Polymorphism (T-RFLP) analysis. Results revealed considerably diverse communities of bacterial endophytes in the interior of rice seeds. The richness of ribotypes ranges from 5-14 T-RFs corresponding to major groups of bacterial endophytes in the seeds. Endophytic bacterial diversity of the salt-sensitive IR29 is significantly more diverse compared to those of salt-tolerant cultivars. Proteobacteria followed by Actinobacteria and Firmicutes dominated the overall endophytic bacterial communities of the indica rice seeds based on 16S rDNA analysis of clones and isolates. Community profiles show common ribotypes found in all cultivars of the indica subspecies representing potential core microbiota belonging to Curtobacterium, Flavobacterium, Enterobacter, Xanthomonas, Herbaspirillum, Microbacterium and Stenotrophomonas. Multivariate analysis showed that the bacterial endophytic community and diversity of rice seeds are mainly influenced by their host's genotype, physiological adaptation to salt stress and parental lineage.

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The influence of Cognitive Coping on Sick Role Behavioral Compliance and Depression, Satisfaction with Life in Hemodialysis Patients (혈액투석환자의 인지적 대처전략에 따른 환자역할행위 이행 및 우울, 삶의 만족에 미치는 영향)

  • Kim, Ji-Hyun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.2
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    • pp.1328-1338
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    • 2015
  • The purpose of the study was to examine the relationships between cognitive coping, sick role behavioral compliance, depression, and life satisfaction of hemodialysis patients based on the stress-coping model. The research is cross-sectional survey, 150 participants were recruited from 4 local clinics in Chungcheongbuk-do. As a results, the cognitive coping scores were significantly related to sick role behavioral compliance, depression, and life satisfaction. The coping strategies explained 20.5%, 10.5%, and 24.6% of the variances in sick role behavioral compliance, depression, and life satisfaction, respectively. The most powerful coping strategy was positive refocusing in sick role behavioral compliance, depression, and life satisfaction. The results of the study indicate that cognitive coping plays an essential role for psychological adaptation of hemodialysis patients. Therefore, the development and application of intervention program to improve adaption of hemodialysis patients are required.

Translation and Content Validation of the Korean Version of the Falls Efficacy Scale for Stroke and Brain Injury Patients (뇌졸중 및 뇌손상 환자를 위한 한국판 넘어짐효능감척도(Korean Version-Falls Efficacy Scale) 번안과 내용타당도 연구)

  • Su-jin Kim;Jeong-Ah Kim;Su-jin Hwang
    • PNF and Movement
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    • v.21 no.3
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    • pp.387-401
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    • 2023
  • Purpose: The purpose of this study was to develop a Korean version of the Falls Efficacy Scale (K-FES), which is used to measure the fear of falling, that is conceptually equivalent to the original and culturally adaptable to the Korean population. Methods: A five-step translation and adaptation process was employed to create the K-FES, adhering to the established guidelines for cross-cultural rehabilitation outcome measures. The content validity was then evaluated by 22 rehabilitation professionals (15 males and 7 females) with an average clinical experience of 201 months at neurological rehabilitation centers. The content validity ratio and index were used as a basis for judgment. Results: The translation process identified inconsistencies with the terms "objects" and "telephone" in the original Falls Efficacy Scale, which were subsequently resolved in the final K-FES version. The content validity ratios for the original, second, and third versions of the K-FES ranged from -0.27-0.91, -0.27-0.91, and -0.27-0.91, respectively. Correspondingly, the content validity index values for the original, second, and third versions of the K-FES ranged from 0.77-1.00, 0.68-1.00, and 0.63-1.00, respectively. Conclusions: The K-FES was rigorously developed through translation, adaptation, and validation processes, making it a reliable tool for Korean stroke rehabilitation professionals. It is expected to be instrumental in clinical and research settings to assess postural stability and fall risk in patients with strokes and brain injuries.

Korean and Multilingual Language Models Study for Cross-Lingual Post-Training (XPT) (Cross-Lingual Post-Training (XPT)을 위한 한국어 및 다국어 언어모델 연구)

  • Son, Suhyune;Park, Chanjun;Lee, Jungseob;Shim, Midan;Lee, Chanhee;Park, Kinam;Lim, Heuiseok
    • Journal of the Korea Convergence Society
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    • v.13 no.3
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    • pp.77-89
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    • 2022
  • It has been proven through many previous researches that the pretrained language model with a large corpus helps improve performance in various natural language processing tasks. However, there is a limit to building a large-capacity corpus for training in a language environment where resources are scarce. Using the Cross-lingual Post-Training (XPT) method, we analyze the method's efficiency in Korean, which is a low resource language. XPT selectively reuses the English pretrained language model parameters, which is a high resource and uses an adaptation layer to learn the relationship between the two languages. This confirmed that only a small amount of the target language dataset in the relationship extraction shows better performance than the target pretrained language model. In addition, we analyze the characteristics of each model on the Korean language model and the Korean multilingual model disclosed by domestic and foreign researchers and companies.