Plant-feeding insects are a ubiquitous feature of terrestrial life. It follows that understanding the evolution of insect herbivory and its diversity is fundamental to understanding the evolution of terrestrial ecosystems. During my Ph. D. study, I found phylogenetic conservatism in the feeding mode (internal vs. external feeding) of Yponomeutoidea, one of the primitive lepidopteran superfamilies, as well as in their diet breadth and in the growth form and taxonomic affinities of host plants they used. In spite of their importance in terrestrial ecosystems, the evolutionary history of Lepidoptera has been poorly known. This mostly is attributable to their poor fossil record. My Ph. D. study provided better understanding to the lepidopteran fossils. Fossils are an essential resource in divergence time estimation using molecular clock methods. Once reliably resolved, dating data can be used in tracing the evolutionary history of Lepidoptera/plant associations. I introduce my works to take such advantages from fossils and phylogenetic studies.

It is controversial to say just what kind of role the government bureaucracy actually had in the social conversions of the Korean society. By emphasizing the 'Growth First Belief' over everything else, the quality of life and happiness of the people have always taken a backseat. In the process of rapid industrialization the unattractive mingling of special privileges and rights with the blind worshipping and idolization towards power and riches which happened has led to the creation of new terms such as 'pariah capitalism' and 'bureaucratic mafia(bureaufia)'. Concentrating the state resources and consequent choices made by the developmental state have also led to the worsening of the inequality and concentration of wealth as a result. South Korea's authoritative bureaucracy is a centralized body of the state and can be seen as the party responsible for providing the seed of the present inequality of the Korean society. This paper will look at the evolution and the effects on how ‘the growth first’ public policy had on the inequality that exists within the Korean society and contemplate upon the measures that can alleviate these problems. The paper also attempts to offer several suggestions that will lead to a fairer and more equal society. First, there should be a conversion of the goal in public administration for the better quality of life which is not of a quantitative nature of the growth. Second, there should be an execution of ‘proper’ regulations that are deemed most necessary in the most effective positions which will heal the side effects of the growth. Finally, there should be a drastic embracement and investment on the part of the social welfare administration to respond to the inevitable low birth rate and aging society.

As a macroscopic research for the interaction of TV Console game platform, I have analyzed the differentiation & characteristic of interaction for each platform. “Odyssey” developed by Ralph Henry Baer in Magnavox was the first console which has the propaedeutic user interaction. Development of graphical technology and the release of the Nintendo Famicom which equipped with Yokoi Gunpei cross key & horizontal Pad had provided an opportunity for the development of user interaction methods like as sound & 2D. Also, multimedia function of Sony PlayStation and Nintendo 64 had brought the era of 3D games and multiplay. Finally, Motion technology triggered by Wii had progressed to the gesture recognition interface throughout the Playstation MOVE of SONY & Xbox 360 Kinect of Microsoft.

Expression type for mixed-use of Dongba characters can be divided into dominant type and parallel type. Causes for mixed-use includes three points: 1. similar or compatible patterns are the precondition for mixed-use; 2. certain relation exists among semantics of words represented by characters, or characters belong to the same classification in terms of meaning or have correlative meanings; 3. outcome is obtained during self-adjustment transitional stage of internal character of writing system. There are three solutions to solve the problem of similar characters: 1. re-distribution of characters’ functions; 2. integration of characters; 3. reconstruction of expression which is embodied in two aspects, including ideographical and phonetic expression transited from ideographical expression to additional phonetic complement, and transition from ideographical expression to pure phonetic expression.

The microstructural evolution of Grade 91 tempered martensite ferritic steels heat treated at 760~1000 oC for two hours was investigated using scanning electron microscopy(SEM), energy disperse spectroscopy(EDS), electron backscattered diffraction (EBSD), and transmission electron microscopy(TEM); a microhardness tester was also employed, with a focus on the grain and precipitate evolution process as well as on the main hardening element. It was found that an evolution of tempered martensite to ferrite(760~850 oC), and to fresh martensite(900~1000 oC), occurred with the increase of temperature. Simultaneously, the parabolic evolution characteristics of the low angle grain boundary(LAGB) increased with the increase of the heating temperature(highest fraction of LAGB at 925 oC), indicating grain recovery upon intercritical heating. The main precipitate, M23C6, was found to be coarsened slightly at 760~850 oC; it then dissolved at 850~1000 oC. Besides this, M3C cementite was formed at 900~1000 oC. Finally, the experimental results show that the hardness of the steel depended largely on the matrix structure, rather than on the precipitates, with the fresh martensite showing the highest hardness value.

We report first results from KVN and VERA Array (KaVA) VLBI observations obtained in the frame of our Plasma-physics of Active Galactic Nuclei (PAGaN) project. We observed eight selected AGN at 22 and 43 GHz in single polarization (LCP) between March 2014 and April 2015. Each source was observed for 6 to 8 hours per observing run to maximize the uv coverage. We obtained a total of 15 deep high-resolution images permitting the identification of individual circular Gaussian jet components and three spectral index maps of BL Lac, 3C 111 and 3C 345 from simultaneous dual-frequency observations. The spectral index maps show trends in agreement with general expectations – flat core and steep jets – while the actual value of the spectral index for jets shows indications for a dependence on AGN type. We analyzed the kinematics of jet components of BL Lac and 3C 111, detecting superluminal proper motions with maximum apparent speeds of about 5c. This constrains the lower limits of the intrinsic component velocities to  0.98c and the upper limits of the angle between jet and line of sight to 20◦. In agreement with global jet expansion, jet components show systematically larger diameters d at larger core distances r, following the global relation d  0.2r, albeit within substantial scatter.

The Milky Way did not form in isolation, but is the product of a complex evolution of generations of mergers, collapses, star formation, supernovae and collisional heating, radiative and collisional cooling, and ejected nucleosynthesis. Moreover, all of this occurs in the context of the cosmic expansion, the formation of cosmic laments, dark-matter haloes, spiral density waves, and emerging dark energy. This paper summarizes a review of recent attempts to reconstruct this complex evolution. We compare simulated properties with various observed properties of the Local Group. Among the generic features of simulated systems is the tendency for galactic halos to form within the dark matter filaments that define a super- galactic plane. Gravitational interaction along this structure leads to a streaming ow toward the two dominant galaxies in the cluster. We analyze this alignment and streaming flow and compare with the observed properties of Local-Group galaxies. Our comparison with Local Group properties suggests that some dwarf galaxies in the Local Group are part of a local streaming ow. These simulations also suggest that a significant fraction of the Galactic halo formed at large distances and arrived later along these streaming ows.

Star formation activities dominate the evolution of galaxies. Elliptical galaxies are believed to be old galaxies in the Hubble sequence, and elliptical galaxies at different evolution epochs might have different star formation activities and/or morphologies. We investigate the connection between star formation rates and the morphology of elliptical galaxies. With the Sloan Digital Sky Survey (SDSS) and the Galaxy Zoo, we select a sample of elliptical galaxies by morphology and consider their infrared emission as an index of star formation rate to study the relation between the star formation rates and their morphological properties, such as ellipticities. In addition, we select some nearby spiral galaxies with very low MIR emission to probe the mechanisms of these red spiral galaxies. We display our preliminary results and discuss their implication on the evolution of galaxies in this poster.

We use light-curve fitting models (MLCS2k2, SALT2, and SNooPy) as implemented in SNANA to make the YOnsei Nearby Supernova Evolution Investigation (YONSEI) Supernova Catalogue. The catalogue consists of several hundred Type Ia supernovae (SNe Ia) in the redshift range from 0.01 to 1.35, and provides distance moduli, light-curve shape parameters, and color or extinction values for each supernova. This data set will be used to study the dependence of SNe Ia luminosities on the host galaxy morphologies. In this paper, we present the YONSEI Supernova Catalogue and preliminary systematic tests for the catalogue.

Stellar mass is an important parameter of galaxies. We estimate the dynamical mass of an elliptical galaxy by its velocity dispersion and effective radius using the Hernquist model in the framework of MOdified Newtonian Dynamics (MOND). MOND is an alternative theory to the dark matter paradigm. In MOND the dynamical mass is the same as the baryonic mass or luminous mass, and in elliptical galaxies most of the baryons reside in stars. We select elliptical galaxies between redshift 0.05 and 0.5 from the main galaxy sample and the luminous red galaxy sample in the Sloan Digital Sky Survey. We nd that the stellar mass-to-light ratio at different redshift epochs can be fitted by a gamma distribution, and its mean is smaller at smaller redshifts.

We use the millennium simulation for studying the evolution of groups of galaxies over time. We find fossil and non-fossil groups as well as old and young groups at redshift z = 0 and follow them back in time to investigate the evolution of their parameters, such as mass assembly, luminosity gap and halo mass concentration. We find that fossils assemble a larger fraction of their mass at z = 0 than controls. The magnitude gaps between fossil and non-fossil groups are not the same because of major and minor mergers, in old and young groups as well. We also find that WMAP1 and WMAP7 cosmologies lead to the same evolutionary history for fossil and control groups.