http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Exploring Korean Historical Architecture Using Dynamic Geometry Software
( Siddo Radcliffe A ),( Rahim Medhat H ) 한국수학교육학회 2011 수학교육 학술지 Vol.2011 No.2
Korea, as many people will know, is a beautiful country with many historical architecture gems on earth. One of its lesser-known features is its link to geometry. This paper will illustrate some ways in which we can use 2D and 3D dynamic geometry software to model Korea historical structures.
Fundamental Aspects of the Unbalance Condition for the Forces involved in Rail Gun Recoil
Banerjee, Arindam,Radcliffe, P.J. Journal of International Conference on Electrical 2014 Journal of international Conference on Electrical Vol.3 No.3
The forces involved in the firing of the electromagnetic rail gun may be analyzed from Amperian, Maxwellian and Einsteinian approaches. This paper discusses these different paradigms with regard to rail gun performance modeling relating to the generation and balance of the forces caused by the currents and their induced magnetic fields. Recent experimental work on model rail guns, where the armature is held static, shows very little recoil upon the rails, thereby indicating a possible violation of Newton's Third Law of Motion. Dynamic testing to show this violation, as suggested by the authors in an earlier paper, has inherent technical difficulties. A purpose-built finite element C/C++ simulator that models that suspended rail gun firing action shows a net force acting upon the entire rail gun system. A new effect in physics, universal in scope, is thus indicated: a current circulating in an asymmetric and rigid circuit causes a net force to act upon the circuit for the duration of the current. This conclusion following from computer simulation based upon Maxwellian electrodynamics as opposed to the more modern relativistic quantum electrodynamics needs to be supported by unambiguous experimental validation.
( Rahim,Medhat H ),( Siddo Radcliffe A ) 한국수학교육학회 2012 수학교육연구 Vol.16 No.2
A group of twenty-nine high school student-teachers were given a set of mathematical propositions focusing on shape-to-shape transformations. Their task was to determine through hands-on manipulation and use of dynamic software that each shape be transformed into an area equivalent rectangular region. This paper reports on a classroom-based research.
Public Sector Employment, Quality of Government, and Well-Being: A Global Analysis
Davidson Robert,Pacek Alexander,Radcliff Benjamin 한국외국어대학교 국제지역연구센터 2021 International Area Studies Review Vol.24 No.3
While a growing literature within the study of subjective well-being demonstrates the impact of socio-political factors on subjective well-being, scholars have conspicuously failed to consider the role of the size and scope of government as determinants of well-being. Where such studies exist, the focus is largely on the advanced industrial democracies of the Organization for Economic Co-Operation and Development. In this study, we examine the size of the public sector as a determinant of cross-national variation in life satisfaction across a worldwide sample. Our findings strongly suggest that as the public sector grows, subjective well-being increases as well, conditional on the extent of quality of government. Using cross-sectional data on 84 countries, we show this relationship has an independent and separable impact from other economic and political factors.
( Rahim Medhat H ),( Siddo Radcliffe A ) 한국수학교육학회 2011 수학교육 학술지 Vol.2011 No.2
A group of twenty-nine high school student-teachers were given a set of mathematical propositions focusing on shape-to-shape transformations. Their task was to determine through hands-on manipulation and use of dynamic software that each shape be transformed into an area equivalent rectangular region. This paper reports on a classroombased research..
Quench behavior of a no-insulation coil wound with stainless steel cladding REBCO tape at 4.2 K
Kim, Kwanglok,Kim, Kwangmin,Bhattarai, Kabindra R,Radcliff, Kyle,Jang, Jae Young,Hwang, Young Jin,Lee, SangGap,Yoon, Sangwon,Hahn, Seungyong IOP 2017 Superconductor science & technology Vol.30 No.7
<P>A single pancake no-insulation (NI) coil was wound in a hermetic way with REBCO tape having a thin (1–2 <I>μ</I>m) cladding layer of stainless steel. With an electric heater embedded at the innermost turn of the coil, heater-induced quench tests were performed under a background field of 15 T in a bath of liquid helium at 4.2 K. Despite the large average contact surface resistance of 1.63 <img ALIGN='MIDDLE' ALT='${\rm{m}}{\rm{\Omega }}$' SRC='http://ej.iop.org/images/0953-2048/30/7/075001/sustaa6a8bieqn1.gif'/> cm<SUP>2</SUP> <img ALIGN='MIDDLE' ALT='$,\,\gt 20$' SRC='http://ej.iop.org/images/0953-2048/30/7/075001/sustaa6a8bieqn2.gif'/> times larger than those of pure NI coils, ‘thermal recovery’ was observed at a coil current density (<I>J</I> <SUB> <I>e</I> </SUB>) below 700 A mm<SUP>−2</SUP> mainly due to the local current sharing. The coil experienced nine consecutive ‘thermal runaway’ quenches at <I>J</I> <SUB> <I>e</I> </SUB> of 700–820 A mm<SUP>−2</SUP> (power supply limit), yet no discernible coil degradation or damage was observed. The results demonstrated that the stainless steel cladding REBCO tape may be effective at reducing the charging delay of high field NI REBCO magnets without sacrificing the self-protecting feature.</P>