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Search Results: 1 - 10 of 112684 matches for " Kosuke O. Hara "
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STEM Moiré Observation of Lattice-Relaxed Germanium Grown on Silicon  [PDF]
Junji Yamanaka, Chiaya Yamamoto, Hiroki Nakaie, Tetsuji Arai, Keisuke Arimoto, Kosuke O. Hara, Kiyokazu Nakagawa
Journal of Materials Science and Chemical Engineering (MSCE) , 2017, DOI: 10.4236/msce.2017.51014
Abstract:
We deposited Ge films on Si substrates by molecular beam epitaxy (MBE) method. The specimens were annealed at around 750 C using microwave- plasma heating technique which we had reported before. After these pro- cesses, we carried out special scanning transmission electron microscopic (STEM) observation. The moiré between the crystal lattices and the scanning lines controlled by STEM was utilized to show lattice-spacing distribution. The results exhibited that we were succeeded in forming lattice-relaxed Ge thin films. It was also recognized that this STEM moiré technique is very useful to observe lattice-spacing distribution for large area with high resolution.
Surface Roughness of SiGe/Si(110) Formed by Stress-Induced Twins and the Solution to Produce Smooth Surface  [PDF]
Junji Yamanaka, Mai Shirakura, Chiaya Yamamoto, Naoto Utsuyama, Kei Sato, Takane Yamada, Kosuke O. Hara, Keisuke Arimoto, Kiyokazu Nakagawa
Journal of Materials Science and Chemical Engineering (MSCE) , 2018, DOI: 10.4236/msce.2018.61004
Abstract:
Lattice-strained Si thin films grown onto SiGe(110)/Si(110) are attracting because of their potential to realize high-speed transistors. In this study we observe surface morphology of Si/SiGe/Si(110) using scanning electron microscopy and we also observe microstructure of the identical position using cross-sectional transmission electron microscopy. These results reveal that crossing of stress-induced twins causes remarkable surface roughness. We propose using vicinal substrate to avoid this phenomenon and our successive experimental results are shown in this paper.
Feasibility Study to Evaluate Lattice-Space Changing of a Step-Graded SiGe/Si (110) Using STEM Moiré  [PDF]
Junji Yamanaka, Mai Shirakura, Chiaya Yamamoto, Kei Sato, Takane Yamada, Kosuke O. Hara, Keisuke Arimoto, Kiyokazu Nakagawa, Akimitsu Ishizuka, Kazuo Ishizuka
Journal of Materials Science and Chemical Engineering (MSCE) , 2018, DOI: 10.4236/msce.2018.67002
Abstract:
A moiré between crystal lattice planes and scanning electron beam-lines formed in a scanning transmission electron microscope includes the information of the lattice spacing. We apply these phenomena to a compositionally graded SiGe thin film deposited onto a Si substrate by molecular beam epitaxy method. The results of the experiments and image analysis show the potential of this technique to analyze a slight change of the lattice spacing according to a compositional change.
A representation theorem for the linear quasi-differential equation
J. G. O'Hara
International Journal of Mathematics and Mathematical Sciences , 2000, DOI: 10.1155/s016117120000199x
Abstract: We establish a representation for q in the second-order linearquasi-differential equation (py′)′
Attending to the health needs of people with intellectual disability: quality standards
O'Hara,Jean;
Salud Pública de México , 2008, DOI: 10.1590/S0036-36342008000800008
Abstract: people with intellectual disabilities remain among the most vulnerable members of society and often face many barriers to healthcare. they experience major health problems and risks yet pay a ?disability penalty?, the result of social exclusion, discrimination and isolation. if public health strategies are to address the physical and mental health needs of people with intellectual disabilities, attention needs to be given to their particular health profile. health targets, quality standards and outcome measures must attend to their needs, for the measure of civilisation is how well we treat those who are deemed more vulnerable and less able in society. this article highlights how these issues are being addressed in ?westernised? countries and some of the dilemmas and challenges faced by health care organisations.
New moon from an old hand
Michael John OHara
Chinese Science Bulletin , 2004, DOI: 10.1007/BF03183402
Abstract: The outcome of the Apollo lunar exploration program 1969–1974 was a model of lunar petrogenesis which ignored the probability of selective volatilisation of gases and alkalis from fire-fountaining lunar basalts. It overlooked the fact that the average compositions of the erupted basalts were those of plagioclase-saturated and low-pressure cotectic liquids on eruption, clearly indicating that they were not primary magmas. The basalts may have undergone evolution by gabbro fractionation within the lunar crust, perhaps in large lava lakes now solidified as the lunar maria. The existing model involving a global magma ocean and plagioclase flotation to form the lunar crust arises solely from the incorrect assumption that the basalts are primary magmas. The plagioclase flotation hypothesis requires the presence of a significant positive europium anomaly in the lunar highland crust, and was founded upon its alleged presence. However, that positive anomaly is neither established by the original data set nor by the much broader current data set. Critical observations, and experiments which will advance the debate are suggested, and alternative interpretations outlined.
Policies and institutions for moderating deep recessions, debt crises and financial instabilities
OHara Phillip Anthony
Panoeconomicus , 2013, DOI: 10.2298/pan1301019h
Abstract: This paper outlines a long-term policy and institutional framework for reducing the intensity of recessions, debt crises and financial instabilities, especially for the Core nations and areas that bore the brunt of the anomalies during 2008-2013. We argue that institutional changes need to be systemic, amounting to the construction of a new social structure of accumulation (SSA) or mode of regulation (MOR), which we call an SSA of embedded communitarian liberalism. Five institutional spheres are introduced which are in need of systemic change, due to the entrenched contradictions and problems which the current set of institutions generate. These involve firstly institutions within the world-system of finance and production; secondly relating to finance versus industry; thirdly capital versus labor; fourthly state systems of production; and fifthly the interlinking of state, community and ecology.
Institutional regimes, long wave systemic risk and great international crisis of 2008-2012
OHara Anthony Phillip
Panoeconomicus , 2012, DOI: 10.2298/pan1201001o
Abstract: This paper studies the relationship between long-term growth of GDP per capita, institutional regimes of accumulation (ROA), systemic risk and the Great International Crisis of 2008-2010. The principle hypothesis behind the work is that the ROA provides a foundation for long-term growth as a type of fundamental variable, and that this growth provides a buffer against systemic risk in the sense that sustainable growth provides resources for debt provision and employment stimulation. The emergence of a viable ROA is crucial for long waves of growth which stimulate both private sector profit and public sector tax receipts which (using conventional terminology) reduce the structural deficit for both sectors. Low rates of long-term growth, therefore, provide a good indicator of the emergence of “long wave systemic risk” (LWSR), which left such nations vulnerable to uncertainty, financial crisis and recession. The paper investigates the inability of growth for various decades to “cover” instabilities associated with the Great Crisis, leading to high rates of LWSR, especially for European and North American nations that bore the brunt of the crisis.
International subprime crisis and recession: Emerging macroprudential, monetary, fiscal and global governance
OHara Anthony Phillip
Panoeconomicus , 2011, DOI: 10.2298/pan1101001o
Abstract: This paper scrutinizes technical international policy reactions to the subprime crisis and recession. Short-term policy responses present challenges to the conservative policies of the 1980s-2000s, while long-term structures and issues are likely to redirect governance significantly. Macroprudential policy now includes systemic risk and debt problems arising from booms in the cycle. Monetary policy considers asset price instability as well as inflation. Fiscal policy in practice cannot ignore functional finance. Alternative forms of global money and reducing international payment instabilities are now a core element of policy. While there is still some asymmetry in policy, international financial crises can be useful in moderating ceremonial policy structures.
Solitario es el acontecer
Edgar O'Hara
Acta Literaria , 2001,
Abstract:
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