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Furuya, Satoshi,Ozoe, Nobuaki 한국주조공학회 2022 한국주조공학회지 Vol.42 No.3
This study aims to improve the machinability of gray cast irons in high speed cutting by using nonmetallic inclusions. In this research, small quantities of AL and Mg were added to conventional gray cast irons without influencing their mechanical characteristics and castability to investigate the effects of these nonmetallic inclusions in the gray cast irons on tool wear in high speed cutting. During the high speed turning of gray cast iron containing Al and Mg using a cermet tool, protective layers consisting of Al, Mg, Si, Mn, S and O were detected on the flank face and rake face of the tool, and flank and crater wear were significantly reduced compared to the turning of conventional gray cast iron and gray cast iron added with Al. The effect of inclusions on tool wear increased with increasing cutting speed, and flank and crater wear was the smallest at the cutting speed of 700m/min. Moreover, in face milling, the addition of Al and Mg drastically decreased the wear rate, and wear hardly progressed even in prolonged cutting length after initial wear. The amount of adhesion on tool faces increased as the cutting speed increased. This increase in cutting speed resulted in the formation of a thick protective layer and the reduction of tool wear. Furthermore, the addition of small amounts of Al and Mg prevented thermal cracks in the face milling of gray cast irons.
A New Trend of In-situ Electron Microscopy with Ion and Electron Beam Nano-Fabrication
Furuya, Kazuo,Tanaka, Miyoko Korean Society of Electron Microscopy 2006 Applied microscopy Vol.36 No.2
Nanofabrication with finely focused ion and electron beams is reviewed, and position and size controlled fabrication of nano-metals and -semiconductors is demonstrated. A focused ion beam (FIB) interface attached to a column of 200keV transmission electron microscope (TEM) was developed. Parallel lines and dots arrays were patterned on GaAs, Si and $SiO_2$ substrates with a 25keV $Ga^+-FIB$ of 200nm beam diameter at room temperature. FIB nanofabrication to semiconductor specimens caused amorphization and Ga injection. For the electron beam induced chemical vapor deposition (EBI-CVD), we have discovered that nano-metal dots are formed depending upon the beam diameter and the exposure time when decomposable gases such as $W(CO)_6$ were introduced at the beam irradiated areas. The diameter of the dots was reduced to less than 2.0nm with the UHV-FE-TEM, while those were limited to about 15nm in diameter with the FE-SEM. Self-standing 3D nanostructures were also successfully fabricated.
A reconsideration of the (non-)uniform syntax of Korean right-dislocation
Kaori Furuya 경희대학교 언어정보연구소 2018 언어연구 Vol.35 No.2
This paper investigates the clausal natureof Korean Right-Dislocation Constructions (RDCs) and reconsiders recent extant (non-)uniform analyses of RDCs. Since Korean is a pro-drop language, most of the literature on Korean RDCs assumes the preverbal empty category as pro or a trace out of movement in the constructions. However, recent literature has shown that null arguments can also be derived via argument ellipsis (e.g. Sakamoto 2016). The paper identifies the categorial statuses of preverbal empty categories and demonstrates similarities and differences between gapped and gapless RDCs that Ko (2016) and Ahn and Cho (2016, 2017) do not observe. It argues that a non-uniform analysis is most compatible to account for the distribution of empty categories of RDCs. The proposed analysis receives support form novel evidence based on (non-)parallelisms between RDCs and fragment answers.
Domestic Implementation of the Rome Statute in Japan
Shuichi Furuya 서울국제법연구원 2015 서울국제법연구 Vol.22 No.2
When Japan acceded to the Rome Statute on July 17, 2007, it enacted the “Act on Cooperation with the International Criminal Court”. However, the present Act aims at ensuring procedural cooperation with the ICC, and does not set out new substantive provisions nor change existing Penal Code in order for Japan to try and punish the perpetrators who commit the crimes referred to in Article 5 of the Rome Statute. From the consideration that there was “no need to think about unthinkable things” and enacting a comprehensive law to criminalize every act and omission would delay the accession to the Rome Statute, Japan adopted a “minimalist” approach according to which a State Party does not change substantive criminal law and domestically punish the crimes within the Rome Statute as far as its existing laws are applicable. In fact, most of the conducts constituting the crime of genocide, crimes against humanity and war crimes constitute ordinary crimes under the Penal Code of Japan if they are committed in the territory of Japan. However, the crimes within the jurisdiction of the ICC, save war crimes as grave breaches, cannot be tried by a Japanese court if they are committed by foreigners against foreigners outside the territory of Japan. In terms of those crimes, Japan would have to entrust the prosecution and punishment of perpetrators to the ICC pursuant to the principle of complementarity. In contrast, the Cooperation Act, with taking into account a vertical relation between the ICC and a State Party, prescribes in detail the ways of cooperation with the ICC such as the procedures of surrender, production of evidence and enforcement.