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南部地方에서 옥수수 및 수수-수단그래스交雜種의 靑刈栽培利用計劃樹立에 關한 硏究
朴贊浩 영남대학교 자원문제연구소 1985 資源問題硏究 Vol.4 No.-
In order to obtain information on the planning of soiling crop production in the southern part of Korea, a corn and a sorghum-sudangrass hybrids were planted in the College of Agriculture and Animal Science Research Farm, Yeungnam University (Gyongsan) in 1983. Observations were made for 30 days from about 1 m high in plant height of corn and sorgh-um-sudangrass hybrids to two weeks after tasseling stage of corn and early heading stage sorghum-sudangrass hybrid. Shoot fresh weight of both corn and sorghum-sudangrass hybrids showeds a sigmoid curve and it was levelled off after tasseling stage of corn or early heading stage of sorghum-sudan-grass hybrid, but shoot dry weight increased linearly as plant advanced in growth. Until tasseling stage of corn and early heading stage of sorgum-sudangrass hybrid percent dry weight was about 11% in corn and 13% in corghum-sudangrass hybrid and then it increased very rapidly. Therefore, a reciprocal accumulative curve based on dry weight seems to be more reasonable than that of fresh weight to estimate required land area for a certain size of anirals, amounts of daily dry matter intake, and period of soiling crop utilization. A seeding rate of 12 kg/10a of corn was more feasible than that of 9 kg/10a for soiling crop production.
박찬호 한국개혁신학회 2003 한국개혁신학 Vol.14 No.-
Dualism acutely divides spirit from body and spiritual from secular realm. Its harm effect draws one-sidedly other world ethics. A reason for dualistic ethics is gnosticism. Even though it has been accused as a heresy in Christian church history, gnosticism still has some influence on Christian behavior. However, Christian doctrine of incarnation, Eucharist, and eschatology definetely refute a gnostic tendency. So Christian theology needs to develop the ethics of body or theology of life.
Effects of Within-Group Homogeneity on Parameter Estimation of the Multilevel Rasch Model
박찬호 한국교육과정평가원 2012 교육과정평가연구 Vol.15 No.2
If a hierarchical structure exists in educational measurement data and examinees within groups are homogeneous, a multilevel item response theory (MLIRT) model may be appropriate. Among the MLIRT models, the multilevel Rasch model is equivalent to a generalized linear mixed model (GLMM) with a logit link where person abilities are considered random effects and item difficulties fixed effects. Then the lme4 package in R can be used to fit the multilevel Rasch model. In this study, it was shown how the multilevel Rasch model can be formulated as a three-level GLMM, followed by a simulation analysis, where intraclass correlation (ICC) of latent abilities as a measure of within-group homogeneity was manipulated from low to high under the conditions of small to large numbers of examinees and items. Item parameter estimates by marginal maximum likelihood estimation (MMLE) were compared with those obtained under the GLMM framework. Biases of item parameter estimates by both methods were not evident in all conditions. However, estimation results by MMLE became proportionally less accurate as the ICC increased when the number of examinees was small. If the number of examinees was large, estimation accuracies of MMLE were acceptable even when a high level of within-group homogeneity existed. GLMM produced stable results at all levels of ICC. In all conditions, the number of examinees was more influential than the number of items.
박찬호,김태진 대한면역학회 2018 Immune Network Vol.18 No.5
In addition to T cell-dependent (TD) Ab responses, T cells can also regulate T cell-independent (TI) B cell responses in the absence of a specific major histocompatibility complex (MHC) class II and antigenic peptide-based interaction between T and B cells. The elucidation of T cells capable of supporting TI Ab responses is important for understanding the cellular mechanism of different types of TI Ab responses. Natural killer T (NKT) cells represent 1 type of helper T cells involved in TI Ab responses and more candidate helper T cells responsible for TI Ab responses may also include γδ T cells and recently reported B-1 helper CD4+ T cells. Marginal zone (MZ) B and B-1 cells, 2 major innate-like B cell subsets considered to function independently of T cells, interact with innate-like T cells. Whereas MZ B and NKT cells interact mutually for a rapid response to blood-borne infection, peritoneal memory phenotype CD49dhighCD4+ T cells support natural Ab secretion by B-1 cells. Here the role of innate-like T cells in the so-called TI Ab response is discussed. To accommodate the involvement of T cells in the TI Ab responses, we suggest an expanded classification of TD Ab responses that incorporate cognate and non-cognate B cell help by innate-like T cells.
소아에서 촉진되는 흉벽종괴의 Multi-Detector CT 소견: 임상화보
박찬호,홍현숙,김영통 대한영상의학회 2013 대한영상의학회지 Vol.68 No.3
A wide variety of diseases manifest as palpable chest wall masses in children. These include normal variation, congenital anomalies, trauma, infection, axillary lymphadenopathies, soft tissue tumors and bone tumors. Given that most of these diseases are associated with chest wall deformity, diagnosis is difficult by physical examination or ultrasonography alone. However, multi-detector CT with three dimensional reconstruction is useful in the characterization and differential diagnosis of palpable chest wall lesions. In this article, we review the spectrum of palpable chest wall diseases and illustrate their multi-detector CT presentation. 정상변이에서부터, 선천성 병변, 외상, 감염, 액와부 림프절 종대, 연부조직 종양과 골종양 등의 다양한 질환들이 소아에서 촉지되는 흉벽종괴로 나타난다. 이들 종괴들의 상당수가 흉곽의 구조적인 변이를 동반하므로 이들 질환에서는 이학적 검사나 초음파 소견만으로는 진단이 어렵다. 따라서 3차원 영상이 가능한 multi-detector CT가 촉지되는 흉벽병변의 특징을 평가하고 감별 진단하는 데 유용하다. 그래서 저자들은 소아에서 촉지되는 흉벽병변으로 나타날 수 있는 질환들을 분류하고 영상소견을 알아보고자 한다.