• Proceedings of the Korea Concrete Institute Conference
• /
• 2009.05a
• /
• pp.317-318
• /
• 2009

In this study, The development characteristic of Modulus of Elasticity required to considering large deflection due to early the removal of forms for the reduction of working period of concrete is investigated. As a result of this study, it is found that the high early strength concrete is advantageous to compare with plain concrete on the early deflection.

• Journal of Embryo Transfer
• /
• v.20 no.2
• /
• pp.113-121
• /
• 2005

This study was conducted to investigate the effects of different hexoses (glucose, mannose, galactose and fructose) on in vitro development of parthenogenetic embryos in the pigs. When the parthnogenetic embryos were cultured in medium with concentrations of 5mM glucose or 1mM galactose, the rates of embyos developed to morula and blastocyst stages were significantly higher than those in another culture conditions (P<0.05). However, high concentration of galactose inhibited development to morula and blastocyst stages. Addition of hexoses at early stage of porcine parthenogenetic embryos were effective for in vitro development. Especially, the embryos cultured in medium with glucose at early stage were effective for development to 2-cell $(72\%)$ and blastocyst $(19\%)$ stages compared with embryo cultured without glucose. From the present results, it is suggested that development of porcine parthenogenetic embryos can improve in medium with 5mM glucose. The concentration of 1mM galactose was also effective for development of porcine parthenogenetic embryos. It also show that parthenogenetic embryos cultured with glucose at early stage can improve in vitro development.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2004.05a
• /
• pp.1-4
• /
• 2004

In this paper. applicability of high early strength type AE water reducing agent(HESAEWA) developed by the authors is discussed by applying Mock-up test. For fresh concrete properties, concrete using existing AE water reducing agent(EAEWRA) and HESAEW A meets the target slump and air content at jobsite. Setting time of concrete using HESAEWA is shorter than that using EAEWRA. Remarkable variance of bleeding and settlement is not observed with type of AE water reducing agent. For hardened concrete properties, use of HESAEW A results in higher strength development compared with that of EAEWRA at standard curing and in field curing condition. Reaching time to accomplish 5MPa of compressive strength. which is possible to remove side form. is taken using HESAEWA earlier than that of EAEWRA by 1day. Therefore, it is confirmed that use of HESAEWA can meet the requirements of general quality of concrete and achieve high early strength development as well as has a desirable field applicability.

• English Language & Literature Teaching
• /
• v.8 no.2
• /
• pp.117-130
• /
• 2003

This paper attempts, not to evaluate, but to describe William Carlos Williams' poetic techniques in accord with his poetic theory of Imagism; it does this by showing the early poetry in 1910's. The purpose of this paper is to analyze how Williams developed his poetic techniques with his theory of poetry. The progress of his poetic theory is drawn from the influence of another poet, Ezra Pound. William Carlos Williams' poetic development in Imagism threads the periods of his writing from the early 1910's to the early of 1920's. William Carlos Williams forms progressively the theory of his poetic technique of Imagism in this period. He treats the poems as images. In his theory of Imagism, his art continually demonstrates the development of poetic techniques by the help of other artists. This period represents Williams' attention to the essence of poetic elements: 'the thing itself.' All of these things in life come before us in his poetry in such a way as to be a technical process divided into the well-formed theory of poetry. The development of William Carlos Williams' poetic technique takes a particular pattern in order to achieve a theory of Imagism. At last, the steps of his poetic technique arrive at an organic unity of poetic theory in the early poetry of Williams.

• Korean Journal of Child Studies
• /
• v.30 no.2
• /
• pp.71-95
• /
• 2009

This study investigated relationships among infant development, teacher's sensitivity, home literacy environment, and infant-teacher interaction in the child care setting. Verbal and behavioral interactions between 30 2-year-old infant-teacher pairs were video-recorded during free play activities; teachers' sensitivity was observed by trained observers; infant development was assessed by teachers; data on the early home literacy environment were gathered through maternal self-reported questionnaires. Data were analyzed by descriptive statistics, t-tests, and correlation analyses. Results indicated that boys showed more naming; girls showed more physical contact with teachers. Infants high in overall developmental level showed more behavioral interaction with teachers. Teacher's sensitivity correlated positively with behavioral imitating and negatively with questioning and nodding. Verbal interaction in the home correlated positively with nodding.

• The Mathematical Education
• /
• v.41 no.3
• /
• pp.257-271
• /
• 2002

As a part of attempts to understand better mathematics classroom culture, this paper first reviews plausible factors which influence the mathematics teacher's own development of instructional goals. The proposed factors consist of teacher characteristics and sociocultural factors. The teacher factors include learning and teaching experience, knowledge, beliefs, and personality traits. The sociocultural factors include cultural and educational norms, curriculum development and administration, teacher education, and professional models with community, This paper then presents detailed interview questions to explore significant influences on the teacher's conceptions of mathematics and its teaching. The interview probes 12 topic areas: (a) early influences on becoming a teacher, (b) the decision to become a teacher, (c) the teacher education years, (d) early mathematics interests, (e) early teaching experiences, (f) career path, (g) influence of peers within the school, (h) influence of administrators, (i) professional development, (j) professional self-development, (k) mathematics teaching, and (i) educational policies.

• The Korean Journal of Community Living Science
• /
• v.17 no.3
• /
• pp.3-14
• /
• 2006

The purpose of this study was to investigate the relationship between conversational function and question type in mothers' utterances and their infant's language development. The subjects were 20 infants from 1;07 to 1;11 years of age in Yanji, China. Each child's spontaneous natural speech during interaction with his/her mother was videotaped for about 30 minutes. The children and their mother's spontaneous utterances were transcribed and coded for the number of type and token of word, grammatical morpheme conversational function and type of question in mother's language input to her child. The result showed that mothers used questions as the most frequent conversational function with their infants. The number of questions in conversational function in mothers' utterances positively correlated with the type of word, type of morpheme and grammatical morpheme in infants' utterance. However, there was no correlation between mothers' language input and infant early language development.

• Proceedings of the Korea Concrete Institute Conference
• /
• 2000.10a
• /
• pp.355-358
• /
• 2000

Nowadays, with high-storied and large-sized of structures, high-strength concrete is applied to the various kinds of concrete structure. Among of them, for reduction of completion time, high-strength concrete is applied to the high-storied tower, building which is constructed continuously by the slip-form method and it is expected to be on the increase. In this case, it is very important to grasp development of early-strength to apply the slip-form method. But the strength data prior 1 day is rare. Therefore, to apply slip-form method in field, this study aim is to present basic data for development of early-strength of high-strength concrete, through examining development of strength by different curing temperature, replacement of fly-ash.

• Animal cells and systems
• /
• v.10 no.1
• /
• pp.41-47
• /
• 2006

Development of the mammalian pre-implantation embryos has unique features, such as a slow and unsynchronized cell division, compaction, and eventual formation of blastocysts with inner cell mass and trophectoderm. In order to have a clue on molecular mechanisms that reside in mouse early development, we suppressed expression of early embryo-specific genes with RNAi and observed their development in vitro. We observed developmental defects in embryos microinjected with dsRNAs for Oct4 or Nanog among the tested genes. Careful examinations revealed that development of the most of the Oct4- or Nanog-suppressed embryos were arrested at the morula stage. These results suggest that the Oct4 and Nanog activities are also required for embryogenesis earlier than the blastocyst stage.

• Journal of Korean language education
• /
• v.25 no.1
• /
• pp.235-265
• /
• 2014

This study is for looking into distinguishing features in child KSL learners' early literacy development. For these, the writings, recording data of dialogue, and observational journals of KSL child learners was collected regularly and the data were analysed. As results, KSL child learners showed lots of writing errors due to difficulty in phonological awareness or letter awareness of Korean language. And they seemed to develop the competence of connecting letters and meanings prior to developing the competence of connecting letters and sounds. Three KSL child learners showed great individual differences in development rate, and it is supposed to be mainly caused from differences of literacy development in their mother tongue, or quantity and quality in exposure for Korean language.