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Dissertations / Theses on the topic 'Phaon'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Hussaini, Muzhgan. "Luminous Land of Phon." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/91402.

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This thesis, Luminous Land of Phon, explores how architectural spaces, even interior spaces, interact with nature along different dimensions. Light and sound are the two very powerful elements of nature and are the focus of this study. Louis Kahn once said: "The sun does not realize how wonderful it is until after a room is made." (Source: https://www.quotetab.com/quotes/by-louis-kahn#GdaYdAIrZ8tmvcyh.97) The question of nature is explored in an urban environment to challenge the tired dualistic division between the human and the natural world. This project transforms the way we think about the urban so that architecture and nature can have great harmony and elevate each other instead of canceling each other. The project is a school of architecture and landscape architecture that promotes fine spaces with desirable qualities of light and sound for the design professionals of the future. The project is sited in the University of the District of Columbia as an expansion of their existing campus and programs.
Master of Architecture
The architecture is a school of Architecture and Landscape architecture consisting of a full scale natural water pool underneath the building, Gallery and shop space under the pool, studio spaces, class rooms, faculty offices, cafeteria, and ceremony halls for the University of the District of Columbia at its Van Ness Campus sited at the Connecticut Ave, NW Washington D.C. The thesis is an exploration of the concept of bringing nature into architecture and a formal study of their harmony with each other, Architecture, structure and construction of the building.
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2

Koschella, Ulrich. "Phason-elastische Energie in dekagonalen Quasikristallen." [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB12103654.

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3

Koschella, Ulrich. "Zur Phason-Phonon-Kopplung in dekagonalen Quasikristallen." [S.l. : s.n.], 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9504667.

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4

Fyn-Sydney, Betty Iboroma. "Phan geometries and error correcting codes." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4433/.

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In this thesis, we define codes based on the Phan geometry of type An. We show that the action of the group SUn+1(q) is not irreducible on the code. In the rank two case, we prove that the code is spanned by those apartments which only consist of chambers belonging to the Phan geometry and obtain submodules for the code.
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5

Wu, Jesse 1972. "Towards a poly-phon-ic environment." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/70865.

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Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1998.
Includes bibliographical references (p. 96-99).
This thesis explores an architectural/landscape environment where polyphonic metaphors are the means for exploration and investigation. Polyphonic, as described in musical definitions/ terms, is the style of composition in which two or more distinctly independent but organically related parts sound against one another. This combination produces associations within the piece that relate to various time lengths and musical instruments when particular musical motives, specifically melodic lines, play against one another. An interdependent relationship between the lines, a vertical association, is referred as harmony, while an interdependent relationship within the lines, a horizontal relationship, is referred as melody. The significance of this metaphorical association with architectural form is the opportunity to create an architectural vocabulary that is exemplified by its richness and diversity of spatial, material, and subconsciousness qualities that moves beyond music's time sequential nature. It is an attempt to provide an environment that exhibits polyphonic qualities in a space-time sequence. Inherent to achieve these qualities, several issues must be considered. This includes; territorial definition and exchange (privacies vs. public), materiality decisions, physical reciprocity, lighting intentions ... etc. The vehicle for these studies will be a chamber music facility programmed for both practice and performance. It is a place where chamber groups or individual performers have decisions to select a place appropriate for their "style" of performance beyond the traditional enclosed concert hall.
by Jesse Wu.
M.Arch.
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6

Zeger, Gabriele. "Strukturmodelle und ihre Anwendung die dekagonale quasikristalline T-Phase d-AlCuCo /." [S.l.] : Universität Stuttgart , Fakultät Physik, 1995. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB7987447.

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7

Roberts, Adam E. "A PHAN-TYPE THEOREM FOR ORTHOGONAL GROUPS." Bowling Green State University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1124723065.

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8

Bunz, Dietmar. "Die atomare Dynamik dekagonaler Quasikristalle." [S.l.] : Universität Stuttgart , Fakultät Physik, 1999. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB8287432.

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9

Roberts, Adam E. "A Phan-type theorem for orthgonal [sic] groups." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1124723065.

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10

Phan, Quoc Huy [Verfasser]. "Audio event detection, classification, and beyond / Quoc Huy Phan." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2018. http://d-nb.info/116843467X/34.

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11

Iverson, Nate. "A Phan-like theorem for orthogonal groups in even characteristic." Bowling Green State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1280251081.

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12

Walz, Christof. "Zur Hydrodynamik in Quasikristallen." [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11244200.

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13

Phan, Thi Thanh Hoi [Verfasser]. "Testing levels of competencies in biological experimentation / Thi Thanh Hoi Phan." Kiel : Universitätsbibliothek Kiel, 2008. http://d-nb.info/1019552891/34.

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14

Liu, Dan. "Transitions de phases de l'approximant 1/1 des quasicristaux de type Tsai : structure atomique, diffusion diffuse et simulation à l'échelle atomique." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GRENY001/document.

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Nous avons étudié les transitions de phases structurales dans une série d'approximant 1/1 de quasicristaux de type CdYb. Les approximants 1/1 partagent le même environnement local que les quasicristaux, mais sont périodiquement ordonnés. L'approximant 1/1 Cd6Tb est particulièrement intéressant puisqu'il présente un ordre magnétique à longue distance en dessous de 20K. Une transition structurale est observée à Tc=192K. Nous avons déterminé la structure atomique de la phase cubique haute température ainsi que celle de la phase monoclinique observée en dessous de Tc. La dépendance en température de la mise en ordre du tétraèdre central a été étudiée en détail entre 192 et 180K. La distorsion de l'icosaèdre Tb12 joue certainement un rôle important dans la formation de l'ordre magnétique à longue distance. Nous avons confirmé que la transition de phase dans Cd6Yb n'est pas de type [110] mais de type [111] avec un groupe d'espace de la phase basse température P2/m. De plus l'influence de l'ordre chimique sur la transition a été étudié sur Cd6Pr and (Cd-Mg)6Pr avec 10% at. Mg. Dans ces deux cas la mise en ordre se fait le long de la direction [110]. Des simulations de dynamique moléculaire ont été conduite en utilisant des potentiels de pairs oscillant pour les phases approximantes Zn6Sc 1/1, Zn85.12Sc14.88 5/3, et Zn85.16Sc14.84 8/5. Le système Zn-Sc est isostructural au système Cd-Yb et les approximant 5/3 et 8/5 ont une maille suffisamment grande pour simuler un quasicrystal de manière réaliste. Dans les trois systèmes nous avons simulés les diagrammes de diffusion diffuse pour une température comprise entre 500 et 100K. Dans l'approximant 1/1 Zn6Sc l'évolution du signal de diffusion diffuse est en accord avec une augmentation de l'ordre à courte distance lorsque la température diminue. La comparaison de la diffusion diffuse entre l'approximant 1/1 et l'approximant 5/3 montre clairement un excès de diffusion diffuse pour l'approximant 5/3 qui est interprété comme résultant des fluctuations de phasons. Dans les trois approximants nous avons mis en évidence un phénomène de diffusion atomique entre le tétraèdre et le dodécaèdre. Pour l'approximant 1/1 cette diffusion se produit le long des diagonales de la maille cubique avec une énergie d'activation de l'ordre de 0.1 eV. Les simulations sur les approximants 5/3 et 8/5 ont montré que la dynamique du tétraèdre et la diffusion atomique dépendent de la complexité de la structure. Cette étude monte que la structure des amas atomiques et leur environnement local jouent certainement un rôle important pour les mécanismes de stabilisation de ces phases
We have studied the structural phase transitions occurring in a series of periodic 1/1 approximant to the CdYb type quasicrystals. 1/1 approximants share the same local environment as the parent quasicrystal, yet with a periodic long range order. The Cd6Tb 1/1 approximant is of particular interest owing to its long range magnetic order observed below 20K. A structural phase transition is observed at Tc= 192K. The atomic structures of the high temperature cubic phase and the low temperature monoclinic phase has been determined. The temperature dependence of the central tetrahedron ordering and its connection to the phase transition has been studied in details between 192 and 180K. The distortion of the Tb12 icosahedron resulting from the ordering of the tetrahedron at low temperature is supposed to play a crucial role in the formation of the long range magnetic order. Diffuse scattering, characteristic of a short range order has also been observed above Tc. For the Cd6Yb approximant we have confirmed that the phase transition does not correspond to an ordering along [11 ̅0]. The space group of the low temperature phase is proposed as P2/m. Furthermore, the effects of chemical order on the ordering mechanism of the tetrahedra are investigated on Cd6Pr and (Cd-Mg)6Pr with 10% at. Mg. The ordering scheme of both Cd6Pr and (Cd-Mg)6Pr is of the [110] type instead of the previously claimed [111] type. Molecular dynamic simulations are carried out on the Zn6Sc 1/1, Zn85.12Sc14.88 5/3, and Zn85.16Sc14.84 8/5 approximants using an effective oscillating pair potential. The Zn-Sc system is isostructural to the Cd-Yb one and the 5/3 and 8/5 approximant have a unit cell large enough to mimic a real quasicrystal. In the three systems we have simulated the diffraction pattern as the temperature goes from 500K to 100K. In the Zn6Sc 1/1 approximant, the temperature dependence of the simulated diffuse scattering evidenced a short range order forming in the low temperature phase. It most likely correspond to the pretransitional short range order as observed experimentally. The comparison of the simulated diffuse scattering between the 1/1 and 5/3 approximants demonstrates an excess of diffuse scattering in the latter phase which is likely the contribution from phasons modes. We have evidenced an atomic diffusion taking place between tetrahedra and dodecahedra in all three approximants. The long range atomic diffusion in the 1/1 approximant is only observed along space diagonal directions of the cubic cell, with an activation energy of 0.1 eV. Further investigation on the 5/3 and 8/5 approximants have shown that the orientational dynamics of the central tetrahedra as well as the atomic diffusion are dependent on the complexity of the structures. The configuration of the clusters and their local environment are considered to play a crucial role in the stabilization mechanism of the quasicrystals and their periodic approximants
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15

Rattanakantadilok, Gritiya. "Translating 'The Tale of Khun Chang Khun Phaen' : representations of culture, gender and Buddhism." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/16114/.

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A recent major work on Thai-English poetry translation is The Tale of Khun Chang Khun Phaen (2010/2012), the only complete translation into any language of the Thai-language epic poem Sepha rueang Khun Chang Khun Phaen (KCKP). Chris Baker and Pasuk Phongpaichit, the translators, mainly render their translation of the epic verse into prose. Their translation is an English version of the standard accounts as edited by Prince Damrong Rajanubhap in 1917–1918 with a slight revision in 1925 and older manuscripts, notably the Wat Ko edition. Baker and Pasuk’s intervention manifests itself at textual level for they restored a great number of passages excised by Damrong. The reinstated segments include censored female sexuality, monk clowning and the less violent account of the creation of Goldchild (กุมารทอง). In the standard edition, Damrong did not allow Siamese women to be sexually expressive and Buddhist monks to be clowns in the national literature he helped shape. The violent account of the Goldchild creation Damrong chose for his standard edition vilifies the leading male character, Khun Phaen. To identify approaches to translating a Thai epic poem into English, twenty-four segments rendered into verse passages, twenty key culturally specific items (CSIs) and four paratextual elements, which also represent the text as a whole, are analysed. This interdisciplinary study takes into account the socio-cultural contexts and aesthetic norms prevalent in the periods in which the source texts were written. The sociological approach in which the method of interview is employed is also adopted in this study. The translated text, paratext and responses from the interviews are analysed to identify translation strategies and procedures and whether the translators conformed to the ‘textual system’ of their time so that their translation of an unrecognised national literature would be admitted to the fellowship of world literature.
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16

Engel, Michael. "Zur Geometrie von Phasonen und Versetzungen in Quasikristallen und ihren Approximanten." [S.l. : s.n.], 2004. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11244202.

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17

Henchy, Judith A. N. "Performing modernity in the writings of Nguyễn An Ninh and Phan Văn Hùm /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/10411.

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18

Phan, Truong San [Verfasser]. "The role of keratinocyte glucocorticoid synthesis in skin homeostasis and inflammation / Truong San Phan." Konstanz : KOPS Universität Konstanz, 2021. http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1f01d7id4cltz2.

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19

Palmer, Alison. "Linear stability analyses of Poiseuille flows of viscoelastic liquids." Thesis, Aberystwyth University, 2007. http://hdl.handle.net/2160/5f85cd3a-2209-4b34-8527-735b41fee8e4.

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The linear stability of the Giesekus and linear Phan-Thien Tanner (PTT) fluid models is investigated for a number of planar Poiseuille flows in single, double and triple layered configurations. The Giesekus and PTT models involve parameters that can be used to fit shear and extensional data, thus making them suitable for describing both polymer solutions and melts. The base flow is determined using a Chebyshev-tau method. The linear stability equations are also discretized using Chebyshev approximations to furnish a generalized eigenvalue problem which is then solved using the QZ-algorithm. The eigenspectra are shown to comprise of continuous parts and discrete parts. The theoretical and numerical results are validated for the Oldroyd-B model, which is a simplified case of the Giesekus and PTT models, by comparing with results in the literature. The continuous and discrete parts of the eigenspectra are determined using a purely numerical scheme to solve the discretized eigenvalue problem. The continuous spectra are then more accurately determined using a semi-analytical scheme which uses an analytical solution of the Orr-Sommerfeld equation alongside a numerical solution for the base flow. A comprehensive survey of the effect of each shear thinning and extensional fluid parameter is undertaken and an instability is found for particular parameter values for the Giesekus fluid. A preliminary investigation of this instability is undertaken whereby the unstable discrete eigenvalue is investigated using an Orthonormal Runge-Kutta scheme within a shooting method which uses the results from the Chebyshev-QZ scheme as a starting point. The linear PTT fluid is found to be stable to infinitesimal disturbances within the range of shear-thinning and extensional parameters considered. The computational e ciency and accuracy of the numerical methods are also investigated.
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20

Phan, Thi Minh Diep [Verfasser]. "Internal characteristics, chemical compounds and spectroscopy of sapphire as single crystals / Thi Minh Diep Phan." Mainz : Universitätsbibliothek Mainz, 2015. http://d-nb.info/1075170532/34.

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21

Nguyen-Sauerbaum, Lina Phan Anh [Verfasser], and Frank [Akademischer Betreuer] Schmidt-Döhl. "Betoninstandsetzung unter Wasser : Mörtelentwicklung und Applikationstechniken / Lina Phan Anh Nguyen-Sauerbaum ; Betreuer: Frank Schmidt-Döhl." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2017. http://d-nb.info/1143691296/34.

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22

Nguyen, Dinh-Thi [Verfasser], and Thanh [Akademischer Betreuer] Phan. "Blow-up analysis for focusing many-body quantum systems / Dinh-Thi Nguyen ; Betreuer: Thanh Phan." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1218466138/34.

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23

Phan, Qui Tra [Verfasser]. "Untersuchungen zur Nutzung der Solarenergie für die Wärme-Kälte-Kopplung unter tropischen Bedingungen / Qui Tra Phan." Dresden : TUDpress, 2007. http://d-nb.info/999769308/34.

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24

Phan, Thi My-Dung [Verfasser]. "Prozessentwicklung und -optimierung zur Gewinnung einer Lipase aus der Hefe Trichosporon sp. / Thi My-Dung Phan." Aachen : Shaker, 2003. http://d-nb.info/1170544290/34.

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25

Roth, Johannes Werner. "Atomistic simulation of shock waves from simple crystals to complex quasicrystals /." [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB12103655.

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26

Phan, Thanh Hai [Verfasser]. "In-situ characterization of self-assembled organic layers at anion modified metal/electrolyte interfaces / Thanh Hai Phan." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1238687083/34.

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27

Weare, Andrea M. "Beauty work : a case study of digital video production and postfeminist practices on YouTube's Icon Network." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/3213.

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This dissertation study explored women's labor in the beauty industries of the YouTube vlogosphere, specifically beauty video production on the ICON network, the beauty and lifestyle channel of YouTube entrepreneur Michelle Phan. Via a case study of ICON's YouTube creators and their video production, this dissertation explored female digital labor by interrogating gender, ethnicity, bodies, and power to address two interconnected elements situated particularly in the YouTube vlogosphere: beauty and entrepreneurship. The study's key research questions asked: In the transnational world of digital employment, what are the material and ideological complexities of beauty YouTubers' experiences? And how do YouTubers interpret their technical production, their beauty ideologies, their power, their authenticity, and the material outcomes of their production for themselves and others? Following an analysis of ICON as a company, interviews with its management and video creators, and its video products, the case study's findings reveal that while ICON recruits beauty creators to market on behalf of its retail partners, the creators see themselves as entrepreneurs who negotiate their own stances regarding their beauty ideals, user-generated content, (post)feminisms, and online authenticity.
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Phan, Van Tung [Verfasser], and T. [Akademischer Betreuer] Böhlke. "Modeling the mesoscopic and macroscopic deformation behavior of the ferritic stainless steel DC04 / Tung Phan Van. Betreuer: T. Böhlke." Karlsruhe : KIT-Bibliothek, 2012. http://d-nb.info/1020663561/34.

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Phan, Tan Thanh-Thu [Verfasser]. "Integration von Schlüsselkompetenzen im Englischstudium durch E-Learning : eine empirische Fallanalyse am Beispiel eines englischen Seminars / Thanh-Thu Phan Tan." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover, 2010. http://d-nb.info/100089312X/34.

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Phan, Duy Dũng [Verfasser], Michael [Gutachter] Stintz, Ginaurelio [Gutachter] Cuniberti, and Andreas [Gutachter] Seidel-Morgenstern. "Modelling and Evaluation of Fixed-Bed Photocatalytic Membrane Reactors / Duy Dũng Phan ; Gutachter: Michael Stintz, Ginaurelio Cuniberti, Andreas Seidel-Morgenstern." Dresden : Technische Universität Dresden, 2019. http://d-nb.info/1226946429/34.

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Phan, Dinh V. T. [Verfasser]. "Herausforderungen bei Doppelbesteuerungsabkommen zwischen Industrie- und Schwellenstaaten. : Das Prinzip der staatlichen Leistungsfähigkeit am Beispiel des DBA-Vietnam. / Dinh V. T. Phan." Berlin : Duncker & Humblot, 2019. http://d-nb.info/1238486266/34.

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Nguyen, Thi Hue, and Dinh Nghiem Ha. "Research on the status of chemical pesticide uses in agricultural activities in Phan Me commune, Phu Luong district, Thai Nguyen province." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-190448.

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Phan Me is a midland-mountainous commune of Phu Luong district, Thai Nguyen province, Vietnam where the agricultural activities are predominant occupation. The investigation on the use of plant protection products in here showed that chemical pesticides have been commonly used in agricultural activities. Although some local people have a good attitude in using plant protection products, the status of using chemical pesticides that were not recommended (like Vofatox) has been quite popular due to the old cultivation customs. The local people have not applied any measures for wastewater treatment, or plant protection product package treatment. Besides, the use of plant protection products in higher concentration than recommendation for vegetables or crops caused the residues of toxics in agricultural products as well as in cultivation soil. The accumulation of toxic residues in the environment is a serious matter of concern because of their significant impact on the environment, agricultural ecosystem and human health
Phấn Mễ là một xã trung du miền núi của huyện Phú Lương, tỉnh Thái Nguyên, Việt Nam với hoạt động sản xuất nông nghiệp là chủ yếu. Qua thực tế điều tra tình hình sử dụng thuốc bảo vệ thực vật (BVTV) tại đây cho thấy hầu hết các loại hình sản xuất nông nghiệp đều sử dụng thuốc BVTV. Một số người dân đã có ý thức trong việc sử dụng thuốc BVTV tuy nhiên do tập quán canh tác từ lâu đời nên việc sử dụng các loại thuốc bị khuyến cáo, chẳng hạn như Vofatox, vẫn còn khá phổ biến. Người dân chưa tiến hành các biện pháp để xử lý nước thải, bao bì, vỏ chai thuốc BVTV sau khi sử dụng. Bên canh đó, họ còn sử dụng thuốc BVTV không đúng liều lượng cho một số loại cây rau để lại dư lượng thuốc trên nông sản cũng như đất canh tác. Sự tích lũy dư lượng của những chất độc hại này trong môi trường là vấn đề đáng lo ngại do sự ảnh hưởng nghiêm trọng của chúng đối với môi trường sống, hệ sinh thái nông nghiệp và sức khỏe con người
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Phan, The Minh [Verfasser]. "Protection of the switches in a three-level inverter by using modified switching schemes for the redistribution of losses / The Minh Phan." Siegen : Universitätsbibliothek der Universität Siegen, 2016. http://d-nb.info/1123283729/34.

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34

Phan, Thuy Trang [Verfasser], Hana [Akademischer Betreuer] Algül, and Helmut [Akademischer Betreuer] Friess. "Die Bedeutung von Socs3 im in-vivo-Modell der pankreatischen Karzinogenese / Thuy Trang Phan. Betreuer: Hana Algül. Gutachter: Helmut Friess ; Hana Algül." München : Universitätsbibliothek der TU München, 2015. http://d-nb.info/1077867441/34.

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35

Konevtsova, Olga. "Théorie de Landau de cristallisation et l'approche d'ondes de densité dans les systèmes complexes." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2013. http://tel.archives-ouvertes.fr/tel-01023771.

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Le nombre croissant de nanostructures physiques et biologiques sont caractérisées par l'ordre non-cristallin et par les propriétés physiques et biologiques non-conventionnels. Parmi ses systèmes il faut distinguer les capsides virales. Ces coquilles solides qui sont formées par un certain nombre dec opies de la même protéine protègent le virus des agressions et facilitent le processus d'infection de la cellule hôte. La distribution des positions de protéines dans une capside est très régulière et montre un degré très élevé d'ordre, aussi bien orientationnel que positionnel. Les capsides virales de topologie sphérique possèdent la symétrie icosaédrique compatible avec l'ordre cristallin local, mais incompatible avec la symétrie cristalline globale et interdite dans les structures périodiques.Ici, sur l'exemple des Papovavirus, nous montrons l'existence d'un nouveau type d'organisation qui résulte dans l'ordre quasicristallin pentagonal chiral de protéines dans des capsides de topologie sphérique et géométrie dodécaédrique. La formation de cet ordre est décrite dans le cadre de la théorie de Landau de cristallisation. Les particularités de la structure sont élucidées grâce à la théorie d'élasticité des quasicristaux comme le résultat de la déformation phason nonlinéaire.La généralisation de la théorie de Landau de cristallisation que nous proposons permet également de décrire des structures quasicristallines octogonales et décagonales grâce à la minimisation contrainte de l'énergie libre, et donne un nouveau sens physique à la notion de " fenêtre de projection " utilisée dans la cristallographie multidimensionnelle.
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36

Beauchesne, Jean-Tristan. "Structures atomiques des phases icosaédriques de type F et dislocations." Phd thesis, Université Paris Sud - Paris XI, 2008. http://tel.archives-ouvertes.fr/tel-00274636.

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Cette thèse est consacrée à l'étude des structures atomiques des phases icosaédriques de type F et leurs dislocations.

Dans cette étude nous avons d'abord construit une structure générique permettant de traiter dans un seul schéma les phases icosaédriques de type F connues. Afin de valider ce modèle nous avons synthétisé quelques compositions suggérées par ce dernier. Ces synthèses ont permis entre autres de découvrir deux nouvelles phases quasipériodiques à la stoechiométrie Al66,08Cu21,35Mn8,29Fe4,28 , l'une icosaédrique (métastable) de type F et l'autre décagonale (stable). Elles ont montré, à une composition au-delà de celles déjà étudiées dans le système (Al,Pd,Fe), l'existence d'une phase F-IQC.

Globalement, ces résultats expérimentaux d'études de nouvelles phases icosaédriques ont permis de montrer la fiabilité du modèle : sur les trois essais de nouvelles compositions, deux ont montré l'existence de phases icosaédriques de type F et la troisième a mis en évidence une phase décagonale en relation d'épitaxie canonique avec la phase icosaédrique brut métastable (axe 10 confondu avec un axe 5).

Possédant un modèle fiable nous avons donc pu y introduire des dislocations. Nous avons ainsi précisé la géométrie des dislocations à l'échelle atomique, hors de la zone de cœur, dans les phases F-IQC. Dans cette structure nous avons aussi identifié les mouvements des phasons et tenté d'apporter des éléments de réponse aux mouvements de ces dislocations.
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37

Nguyen, Thi Hue, and Dinh Nghiem Ha. "Research on the status of chemical pesticide uses in agricultural activities in Phan Me commune, Phu Luong district, Thai Nguyen province: Research article." Technische Universität Dresden, 2014. https://tud.qucosa.de/id/qucosa%3A29084.

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Phan Me is a midland-mountainous commune of Phu Luong district, Thai Nguyen province, Vietnam where the agricultural activities are predominant occupation. The investigation on the use of plant protection products in here showed that chemical pesticides have been commonly used in agricultural activities. Although some local people have a good attitude in using plant protection products, the status of using chemical pesticides that were not recommended (like Vofatox) has been quite popular due to the old cultivation customs. The local people have not applied any measures for wastewater treatment, or plant protection product package treatment. Besides, the use of plant protection products in higher concentration than recommendation for vegetables or crops caused the residues of toxics in agricultural products as well as in cultivation soil. The accumulation of toxic residues in the environment is a serious matter of concern because of their significant impact on the environment, agricultural ecosystem and human health.
Phấn Mễ là một xã trung du miền núi của huyện Phú Lương, tỉnh Thái Nguyên, Việt Nam với hoạt động sản xuất nông nghiệp là chủ yếu. Qua thực tế điều tra tình hình sử dụng thuốc bảo vệ thực vật (BVTV) tại đây cho thấy hầu hết các loại hình sản xuất nông nghiệp đều sử dụng thuốc BVTV. Một số người dân đã có ý thức trong việc sử dụng thuốc BVTV tuy nhiên do tập quán canh tác từ lâu đời nên việc sử dụng các loại thuốc bị khuyến cáo, chẳng hạn như Vofatox, vẫn còn khá phổ biến. Người dân chưa tiến hành các biện pháp để xử lý nước thải, bao bì, vỏ chai thuốc BVTV sau khi sử dụng. Bên canh đó, họ còn sử dụng thuốc BVTV không đúng liều lượng cho một số loại cây rau để lại dư lượng thuốc trên nông sản cũng như đất canh tác. Sự tích lũy dư lượng của những chất độc hại này trong môi trường là vấn đề đáng lo ngại do sự ảnh hưởng nghiêm trọng của chúng đối với môi trường sống, hệ sinh thái nông nghiệp và sức khỏe con người.
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38

Ozdemir, Yavuz. "Volcanostratigraphy And Petrogenesis Of Suphan Stratovolcano." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613051/index.pdf.

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This study is concerned with volcanostratigraphic and petrologic evolution of the Sü
phan, which is a 4050 m high Quaternary stratovolcano in eastern Anatolia. The eruptive products of Sü
phan Stratovolcano, including transitional mildly alkaline to calc-alkaline rocks, are lavas, domes and pyroclastics ranging in composition from basalts to rhyolites. Ar-Ar age data from different levels of the volcanostratigrafic succession yield a range of 0.76-0.06 Ma. Textural features, wide temperature ranges obtained for intermediate members, and the linear trends of whole-rock geochemistry are strongly suggestive of magma mixing in the evolution of Sü
phan volcanics. Presence of crystal clots in many lavas suggests that cogenetic plutonic rocks were also involved in the mixing process. Comparison of whole-rock, melt inclusion and glass chemistry data of Sü
phan to data from experimental studies reported in literature indicate that the melt inclusions describe true liquid lines of descent from a common hydrous parent at pressures of ~500 MPa. EC-AFC modeling of trace element and isotopic compositions reveals 2-8% crustal contamination in the differentiated lavas. REE modeling indicates that primitive rocks of Sü
phan volcanics were products of mixing of melts from spinel and garnet lherzolite sources, with contributions of 60% and 40%, respectively, in the mixture. A two-stage petrogenetic model is proposed for Suphan stratovolcano. Mantle- derived melts stall and undergo chemical differentiation in a deep hot zone in lower to mid-crust
variably evolved melts ascending from this zone are arrested and mixed at a shallow level where they construct a sub-volcanic magma reservoir beneath Suphan.
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39

Pavlovitch, André. "Problemes de structure et de defauts de structure dans les pavages aperiodiques bi-dimensionnels (quasi-cristaux)." Paris 6, 1988. http://www.theses.fr/1988PA066467.

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Etude geometrique des proprietes structurales des pavages de penrose bidimensionnels servant de base aux modeles des phases decagonales d'alliages d'aluminium-manganese. Etude de la statistique de propagation privilegies des phasons: les tubes. Description des pavages generalises, obtenus par transformation structurale
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40

Sibley, David N. "Viscoelastic flows of PTT fluid." Thesis, University of Bath, 2010. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518114.

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41

Phan, Tien Dat [Verfasser], Robert [Akademischer Betreuer] Liebich, Robert [Gutachter] Liebich, and Santos [Gutachter] Ilmar. "Experimentelle und numerische Untersuchung des strukturdynamischen und strömungsmechanischen Verhaltens einer piezoadaptiven Verdichterschaufel zur Strömungsbeeinflussung / Tien Dat Phan ; Gutachter: Robert Liebich, Santos Ilmar ; Betreuer: Robert Liebich." Berlin : Technische Universität Berlin, 2019. http://d-nb.info/1189206374/34.

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42

Haase, Linn Karen [Verfasser], Klaus [Akademischer Betreuer] Weisz, Klaus [Gutachter] Weisz, Janez [Gutachter] Plavec, and Anh Tuan [Gutachter] Phan. "Sugar-modified guanosine analogs as versatile tools for shaping G-quadruplex architectures / Linn Karen Haase ; Gutachter: Klaus Weisz, Janez Plavec, Anh Tuan Phan ; Betreuer: Klaus Weisz." Greifswald : Universität Greifswald, 2021. http://d-nb.info/1228536201/34.

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43

Hoang, Phan Trong [Verfasser], Udo [Akademischer Betreuer] Conrad, Sven-Erik [Akademischer Betreuer] Behrens, and Heribert [Akademischer Betreuer] Warzecha. "ELPylated avian flu vaccines from plants : Improvement of expression and development of a new purification strategy / Phan Trong Hoang. Betreuer: Udo Conrad ; Sven-Erik Behrens ; Heribert Warzecha." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2012. http://d-nb.info/1030521220/34.

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44

Phan, Huong Lan [Verfasser], Christian Hendrik [Akademischer Betreuer] Heeger, and Doreen [Akademischer Betreuer] Richardt. "Second-generation visually guided laser balloon ablation system for pulmonary vein isolation : Learning curve, safety and efficacy / Huong Lan Phan ; Akademische Betreuer: Christian Hendrik Heeger, Doreen Richardt." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2021. http://d-nb.info/1232457655/34.

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45

Phan, Thanh Noi [Verfasser], Martin [Akademischer Betreuer] Kappas, Martin [Gutachter] Kappas, Gerhard [Gutachter] Gerold, Christoph [Gutachter] Dittrich, Heiko [Gutachter] Faust, and Daniela [Gutachter] Sauer. "Air Surface Temperature Estimation Using MODIS Land Surface Temperature Data in Northwest Vietnam / Thanh Noi Phan ; Gutachter: Martin Kappas, Gerhard Gerold, Christoph Dittrich, Heiko Faust, Daniela Sauer ; Betreuer: Martin Kappas." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://d-nb.info/1191988937/34.

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46

Lowira, Charuwan. "La Migration des populations du nord-est de la Thai͏̈lande vers Bangkok : recherche dans un village d'origine, Ban Phon Sai, et dans un quartier musulman à Bangkok : Ban Khrun Nua." Paris, EHESS, 1990. http://www.theses.fr/1990EHES0062.

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La migration des lao du nord-est de la thailande en tant que main-d'oeuvre debute a la fin du xixeme siecle. Les migrants du village de ban phon sai guides par des marchands de bestiaux se dirigent vers l'embouchure du chao phraya pour travailler dans les rizieres. A partir des annees 30 ils vont vers bangkok pour exercer la conduite de cyclo-pousse, qui interdit en 1960, provoque une dispersion professionnelle. Le succes economique est modeste chez ces populations au statut d'inferieur par leur origine rurale et lao. Il n'y a pas d'assimilation dans le milieu urbain, leur perspective etant le retour au village d'origine; leur readaptation a la vie rurale se fait sans heurt
The migration of the laos in northeastern thailand as laborers began towards the 19 th century. The migrants fron ban phon sai village, under the guidance of the livstock dealers, moved towards the mouth of the chao phraya river in order to work in the rice fields. As of the 1930's they moved towards bangkok to earn their living as tricycle drivers; the profession being banned in 1960 they had to be disbanded. The economic success of these migrants of inferior status as rural and lao is modest. Since ther is hardly any possibility of urban integration, their alternative seems to be migration back to the village of origin, their readaptation to the rural life seems to be fairly smeeth
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47

Phan, Thanh Noi Verfasser], Martin [Akademischer Betreuer] Kappas, Martin [Gutachter] Kappas, Gerhard [Gutachter] Gerold, Christoph [Gutachter] [Dittrich, Heiko [Gutachter] Faust, and Daniela [Gutachter] Sauer. "Air Surface Temperature Estimation Using MODIS Land Surface Temperature Data in Northwest Vietnam / Thanh Noi Phan ; Gutachter: Martin Kappas, Gerhard Gerold, Christoph Dittrich, Heiko Faust, Daniela Sauer ; Betreuer: Martin Kappas." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://nbn-resolving.de/urn:nbn:de:gbv:7-21.11130/00-1735-0000-0003-C17B-9-5.

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48

Perrot, Alain. "Propriétés de transport thermique dans les quasicristaux." Vandoeuvre-les-Nancy, INPL, 1997. http://www.theses.fr/1997INPL091N.

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Les quasicristaux possèdent des propriétés cristallographiques remarquables. Ils sont caractérisés par un ordre orientationnel à longue distance qui est incompatible avec une périodicité de translation. L’étude de leurs propriétés électroniques a montré que la conductivité électrique des phases icosaédriques a un comportement non métallique. L’objet de cette thèse est d'étudier les propriétés de transport thermique des quasicristaux et de leurs approximants. Nous avons réalisé une approche expérimentale et une approche théorique du sujet. La conductivité thermique des phases icosaédriques est relativement faible depuis les basses températures. Elle est inferieure à 10 W / m / K dans le domaine de températures 5K-1000K. Son évolution en fonction de la température présente des similitudes avec celle des matériaux amorphes. À basse température, seuls les phonons (modes étendus) participent au transport thermique. Leur libre parcours moyen est limité par les défauts, les joints de grain, les collisions entre modes de vibration de réseau et par des systèmes à deux niveaux. Nous supposons que ces derniers sont localisés sur des sites susceptibles de créer un phason. Au-delà de 300K, la conductivité thermique des phases quasicristallines et approximantes augmente rapidement avec la température. À haute température, les électrons proches du niveau de fermi et les modes critiques de vibration de réseau contribuent au transport thermique. Les modes critiques n'ont pas un comportement balistique. Leur diffusivité évolue globalement en loi de puissance et peut augmenter quand le temps de relaxation diminue. Les simulations numériques réalisées en dynamique moléculaire sur des chaines approximantes semblent confirmer cette hypothèse.
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49

Yuncu, Onur. "Research By Design In Architectural Design Education." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610061/index.pdf.

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Research by design refers to the design of architectural research as an integral part of architectural design processes. In 1980s, it emerged as a third way in design research that was dominated until then by the methods of natural sciences and humanities. With this new formulation of design research, a methodological and epistemological transformation occurs, leading to the integration of practical knowledge into architectural research. The primary epistemological question transforms from knowing what design is and knowing how to design to knowing what through the act of design. The integration of the act of design in research transforms the status of design in design research from being an object of inquiry to being a research approach. In the literature on research by design, this transformation is often related with Donald Schö
n&rsquo
s conceptualization of &ldquo
reflective practice.&rdquo
The main discussion of reflective practice is primarily methodological rather than epistemological. Although it provides methodological insights, it is not sufficient to constitute an epistemological basis for research by design. Thus, the epistemological basis of research by design has not yet been adequately defined. In this study, the notion of &ldquo
reflective practice&rdquo
is investigated in a broader context relating it to its sources in the concepts of &ldquo
tacit knowledge&rdquo
and &ldquo
action research.&rdquo
A conceptual framework for research by design is constructed by relating these concepts with the discussions on research by design and with practical philosophy, the implications of which has remained rather uninvestigated in this context. Aristotle&rsquo
s elaboration of knowledge generation in action and the concept of phron&
#275
sis (practical knowledge, prudence, or practical wisdom) constitute the underpinning of this conceptual framework. The conceptual framework that is constructed on the basis of the key concepts in practical philosophy is discussed in the context of architectural design education. When architectural design education is formulated as a process of research by design within this framework, knowledge generated in the educational design processes promises not only to improve the particular educational context and architectural education but eventually to contribute to architectural knowledge.
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50

Szallas, Attila. "Heisenberg antiferromagnetique model sur le pavage quasicrystaux bidimensionnelle." Phd thesis, Université Paris Sud - Paris XI, 2008. http://tel.archives-ouvertes.fr/tel-00358251.

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Le pavage de Penrose est une structure quasipériodique bidimensionnelle, utilisée dans la description des composés quasicristallins. Cette structure est parfaitement ordonnée, avec une symétrie de rotation cinq et elle est invariante sous un changement d'échelle par un facteur $\tau$ (le nombre d'or). On s'attend à ce que les propriétés d'un modèle d'antiferromagnétisme dans un tel système diffèrent nettement de celles des antiferromagnétiques périodiques. Nous avons étudié les propriétés d'un modèle d'Heisenberg sur le pavage de Penrose construit à partir de losanges, en utilisant une méthode de développement en ondes de spin. Les énergies et fonctions d'ondes des magnons (quantum d'une onde des spins) ont été étudiées dans le cadre d'une théorie linéarisée. A basse énergie, on trouve une loi de dispersion linéaire, comme dans d'autres antiferromagnetiques bipartites, avec une vitesse effective de l'onde de spin inférieure à celle d'un réseau carré équivalent. Les propriétés spatiales des modes propres ont été étudiées en détail. A basse énergie, nous trouvons que les états propres sont relativement étendus. Une analyse multifractale montre qu'ils sont de type “critique”, ayant une distribution d'exposants multifractaux. Aux énergies plus élevées, les états deviennent plus localisés, et, en fonction de l'énergie, l'amplitude de la fonction d'onde est non-nulle autour d'un sous-ensemble de sites d'une valeur de coordinence donnée.

L'énergie de l'état fondamental de cette antiferromagnetique, et la distribution des aimantations locales dans cet état ont été calculés. Des projections dans l'espace perpendiculaire montrent la simplicité sous-jacente de ce état "complexe". Un simple modèle analytique, l'étoile de Heisenberg à deux niveaux, a été présenté pour expliquer de la distribution d'aimantation locales dans ce système antiferromagnétique.

Dans une dernière partie, les effets de désordre de type “phason” sont considérés. Nous avons progressivement augmenté le désordre géometrique de la structure originale. Nous avons trouvé que l'etat fondamental conserve son ordre de Néel, mais que la forme de la distribution ainsi que la norme des aimantations sont modifiés. Nous montrons, à l'aide d'un développement en ondes des spin ainsi que par Quantum Monte Carlo, que l'aimantation alternée diminue exponentiellement vers une valeur asymptote en fonction du désordre. La distribution spatiale de magnetizations locales devient plus homogène par rapport à pavage parfait. La vitesse des ondes des spin augmente avec le désordre, et les singularités dans le spectre et les functions d'onde sont en partie lissées. Ces résultats sont comparés avec des résultats connus dans des systèmes désordonnés.
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