13,715 research outputs found
The social context of LAN gaming
No full textIncludes abstract.Includes bibliographical references (leaves 58-61).Playing video games at a Local Area Network (LAN) has become a complex social activity. Engaging with these games requires more than simply accomplishing the games’ objectives: it is also a process of socialisation within a community of gamers. Through my observation of players' activities at a Cape Town based LAN event, I begin to outline where, when and how social learning and sharing occurs at these events. I will show how playing games in a LAN setting can teach valuable interpersonal and social skills
Shuhuai Lan
No full text학위논문(박사)--아주대학교 일반대학원 :기계공학과,2009. 8TABLE OF CONTENTS
ABASTRACT i
TABLE OF CONTENTS iii
LIST OF FIG-URES vi
LIST OF TABLES x
CHAPTER 1 INTRODUCTION AND BACK-GROUND 1
1.1 Genral introduction and back-ground 1
1.2 Polymer based process in micro fabrication 2
1.3 Micro thermal imprint process for pattern replication of amorphous polymer 3
1.4 Motivation and objective 7
1.5 Scope of study 8
CHAPTER 2 LITERATURE SURVEY STUDY 10
2.1 Nanoimprint lithography process 10
2.2 State-of-the-art of micro thermal imprint process based on amorph-ous polymer 11
2.2.1 Process development and application in various areas 13
2.2.2 Material flow behavior and Process analysis 25
2.2.3 Mold fabrication 33
2.2.4 FEM numerical simulation of the process 34
2.2.5 Roller-type micro thermal imprint for large area pattern repli-cation 37
2.3 Summary 41
CHAPTER 3 MATERIAL PROPERTY OF GLASSY POLYMER NEAR THE GLASSY TRANSITION TERMPERA-TURE 43
3.1 Introduction of viscoelatic property of glassy polymer near the glass transition temperature 43
3.1.1 Three stages of amorphous polymer material deformation 44
3.1.2 Time dependence based on viscoelastic “mechanical analogy” model 46
3.1.3 Time-temperature correspondence 48
3.2 Experiment study of material behavior near glassy transition tem-perature 50
3.2.1 Experiment setup and sample preparation 50
3.2.2 Tensile stress relaxation test 52
CHAPTER 4 FLAT TYPE MICRO THERMAL IMPRINT PROCESS 57
4.1 Introduc-tion 57
4.2 Experimental work 58
4.2.1 Experiment setup 58
4.2.2 Substrate and mold 61
4.2.3 Process condition design 63
4.2.4 Experiment result measurement 65
4.3 Results and discussion 67
4.3.1 Experimental study of replication of semi-pyramidal pat-tern 67
4.3.1.1 Process analysis based on Taguchi method 69
4.3.2 Numerical study of micro thermal imprint process 77
4.3.2.1 FE model development 77
4.3.2.2 Parametric study of thermal imprint process 79
4.4 Summary 82
CHAPTER 5 FLAT TYPE MICRO THERMAL IMPRINT PROCESS 84
5.1 Introduc-tion 84
5.2 System development and process design 85
5.2.1 Development of Roll-to-Flat micro thermal imprint sys-tem 85
5.2.2 Process design and control parameters 88
5.3 Roll-to-Flat thermal imprint process for large area micro pattern replication 90
5.3.1 Flat mold and substrate preparation 90
5.3.2 Experiment result 91
5.4 Analysis of Roll-to-Flat thermal imprint process 95
5.4.1 Process parameter study 95
5.4.2 Investigation of replication uniformity 99
5.5 Discussion 100
5.6 Summary 101
CHAPTER 6 CONCLUSION AND FUTURE WORK 102
6.1 Conclusions 102
6.2 Future works 104
BIBLIOGRAPHY 106Maste
Surat kaputusan Ketua LAN No.339/VII/61987 Tgl 6 Maret 1987 tentang petunjuk pelaksanaan
No full textX. 183 hlm. : - ; 21 cm
On the dependence structure of wavelet coefficients for spherical random fields
No full textWe consider the correlation structure of the random coefficients for a class of wavelet systems on the sphere (labelled Mexican needlets) which was recently introduced in the literature by [D. Geller, A. Mayeli, Nearly tight frames and space-frequency analysis on compact manifolds, Preprint, 2007. arxiv:0706.3642v2]. We provide necessary and sufficient conditions for these coefficients to be asymptotically uncorrelated in the real and in the frequency domain. Here, the asymptotic theory is developed in the high frequency sense. Statistical applications are also discussed, in particular with reference to the analysis of cosmological data. (C) 2009 Elsevier B.V. All rights reserved
Lan Shan xian sheng shi ji: wu juan.
No full text[藍仁].綫裝, 1函.框18.5 x 13 公分, 10行20字, 無框格.據明洪武本傳抄?見《香港中文大學圖書館古籍善本書錄》(增訂版) (p.237)鈐"曾藏汪閬源家", "愚齋圖書館藏", "武進盛氏所藏"印.Xian zhuang, 1 han.Kuang 18.5 x 13 gong fen, 10 hang 20 zi, wu kuang ge.Ju Ming Hongwu ben chuan chao?Jian "Xianggang Zhong wen da xue tu shu guan gu ji shan ben shu lu" (Zeng ding ban) (p.237)[Lan Ren].Qian "Ceng cang Wang Langyuan jia", "Yu zhai tu shu guan cang", "Wujin Cheng shi suo cang" yin
Performance and design of full-width RHS X and T joints under brace axial tension and brace bending
No full textWithin the research framework for updating the international design standard ISO 14346 for hollow section joints, this study examines brace failure and chord sidewall failure in full-width rectangular hollow section (RHS) X and T joints under brace axial tension, brace in-plane bending and brace out-of-plane bending. The codified design rules for full-width RHS joints are reviewed, with their limitations highlighted. Design resistance equations for brace failure, based on the modified effective width method, and also for chord sidewall failure, using the modified bearing–buckling method and the Lan–Kuhn method, are then proposed. Up-to-date experimental and numerical results are collated from the literature, which cover a wide range of geometrical parameters, steel grades ranging from S235 to S960, varying weld details, and loading cases of brace axial tension, brace in-plane bending and brace out-of-plane bending. The compiled results are adopted to evaluate the performance of full-width RHS joints and to assess suitability of the proposed design resistance equations. It is shown that weld details can significantly affect the deformation capacity and static strengths of full-width RHS joints. The proposed design resistance equations yield conservative and reliable strength predictions for full-width RHS joints. Welding guidance and user-friendly design rules, in which an extension to include Class 3 cross-sections is included, are suggested for full-width RHS X and T joints.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Steel & Composite Structure
Actores del mercado inmobiliario, precio del suelo y producción de la vivienda en la ciudad de Tandil, en la última década
No full textA comienzos del siglo XXI es posible visualizar cómo la materialidad de las ciudades se transforma cada vez más rápido, sobre todo allí donde el capital inmobiliario encuentra posibilidades de obtener importantes rentabilidades…Fil: Migueltorena, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Instituto de Geografía, Historia y Ciencias Sociales. Universidad Nacional del Centro de la Provincia de Buenos Aires. Instituto de Geografía, Historia y Ciencias Sociales; ArgentinaFil: Franzzo, Luan. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Lan, Diana Graciela. No especifíca;IV Jornadas Nacionales de Investigación en Geografía Argentina y X Jornadas de Investigación y Transferencia del Centro de Investigaciones GeográficasTandilArgentinaUniversidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Humanas. Centro de Investigaciones Geográfica
Spin Needlet Spectral Estimation
No full textWe consider the statistical analysis of random sections of a spin fibre bundleover the sphere. These may be thought of as random fields that at each point take as a value a curve (e.g. an ellipse) living in the tangent plane at that point , rather than a number as in ordinary situations. The analysis of such fields is strongly motivated by applications, for instance polarization experiments in Cosmology. To investigate such fields, spin needlets were recently introduced by [21] and [20]. We consider the use of spin needlets for spin angular power spectrum estimation, in the presence of noise and missing observations, and we provide Central Limit Theorem results, in the high frequency sense; we discuss also tests for bias and asymmetries with an asymptotic justification
Rueda de prensa. Presentación X Lan Party. Región de Murcia. Vicerrectorado de Estudiantes.
No full textRueda de prensa. Presentación X Lan Party. Región de Murcia. Vicerrectorado de Estudiantes
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