著者

KAWAI H. TAKAHASHI H.

出版者

一般社団法人 日本鉄鋼協会

雑誌

ISIJ international (ISSN:09151559)

巻号頁・発行日

vol.44, no.7, pp.1140-1149, 2004-07-15

参考文献数

6

被引用文献数

5 25

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One of recent discussions is on the floating and sinking motion of packed bed in the hearth part of blast furnace while the molten liquid is stored in and tapped out of the hearth. Such a repetition motion might be profoundly related to the renewal of deadman particles. Thus, further analysis for deadman motion with the iron liquid is necessary to develop a method for controlled or stable furnace operation. In this study, the experiment is performed using a two-dimensional cold model with foaming polymer particles and water. Gas flow is not considered. The particle descending velocity in the shaft of the model is found to decrease with floating of the hearth packed bed and increase with the sinking motion. The deadman renewal rate that is the solid moving rate forced into raceway from the inside of deadman, is estimated by subtracting the descending rate from the total particle discharge rate being controlled at a constant rate. The numerical treatment called Discrete Element Method is also carried out to clarify the renewal mechanism with storing/tapping liquid. It is confirmed from both the experimental and numerical that the deadman particles move gradually into the raceway while storing/tapping liquid is repeated and the renewal of particles occurs in such a way that the older particles are forced to go out of deadman by buoyancy and the new particles comes in to fill deadman through near the top of the deadman during tapping the liquid. The simulation indicates also that the wall normal contact force in the hearth part increases considerably when the particle bed floats.

著者

Fujimoto A Tsurumi K Kawada R Murao T Takeuchi H Murai T Takahashi H

出版者

Springer Nature

雑誌

Translational Psychiatry (ISSN:21583188)

巻号頁・発行日

vol.7, 2017-04-04

被引用文献数

17

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ギャンブル依存症の神経メカニズム --前頭葉の一部の活動や結合の低下でリスクの取り方の柔軟性に障害--. 京都大学プレスリリース. 2017-04-05.Gambling disorder (GD) is often considered as a problem of trait-like risk preference. However, the symptoms of GD cannot be fully understood by this trait view. In the present study, we hypothesized that GD patients also had problem with a flexible control of risk attitude (state-dependent strategy optimization), and aimed to investigate the mechanisms underlying abnormal risk-taking of GD. To address this issue, we tested GD patients without comorbidity (GD group: n=21) and age-matched healthy control participants (HC group: n=29) in a multi-step gambling task, in which participants needed to clear 'block quota' (required units to clear a block, 1000–7000 units) in 20 choices, and conducted a task-functional magnetic resonance imaging (fMRI) experiment. Behavioral analysis indeed revealed a less flexible risk-attitude change in the GD group; the GD group failed to avoid risky choice in a specific quota range (low-quota condition), in which risky strategy was not optimal to solve the quota. Accordingly, fMRI analysis highlighted diminished functioning of the dorsolateral prefrontal cortex (dlPFC), which has been heavily implicated in cognitive flexibility. To our knowledge, the present study provided the first empirical evidence of a deficit of state-dependent strategy optimization in GD. Focusing on flexible control of risk attitude under quota may contribute to a better understanding of the psychopathology of GDs.

著者

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Gall D Gallant Y Gamez-Garcia J Garcia B Lopez RG Gardiol D Garrido D Garrido L Gascon D Gaug M Gaweda J Gebremedhin L Geffroy N Gerard L Ghedina A Ghigo M Giannakaki E Gianotti F Giarrusso S Giavitto G Giebels B Gika V Giommi P Girard N Giro E Giuliani A Glanzman T Glicenstein JF Godinovic N Golev V Berisso MG Gomez-Ortega J Gonzalez MM Gonzalez A Gonzalez F Munoz AG Gothe KS Gougerot M Graciani R Grandi P Granena F Granot J Grasseau G Gredig R Green A Greenshaw T Gregoire T Grimm O Grube J Grudzinska M Gruev V Grunewald S Grygorczuk J Guarino V Gunji S Gyuk G Hadasch D Hagiwara R Hahn J Hakansson N Hallgren A Heras NH Hara S Hardcastle MJ Harris J Hassan T Hatanaka K Haubold T Haupt A Hayakawa T Hayashida M Heller R Henault F Henri G Hermann G Hermel R Herrero A Hidaka N Hinton J Hoffmann D Hofmann W Hofverberg P Holder J Horns D Horville D Houles J Hrabovsky M Hrupec D Huan H Huber B Huet JM Hughes G Humensky TB Huovelin J Ibarra A Illa JM Impiombato D Incorvaia S Inoue S Inoue Y Ioka K Ismailova E Jablonski C Jacholkowska A Jamrozy M Janiak M Jean P Jeanney C Jimenez JJ Jogler T Johnson T Journet L Juffroy C Jung I Kaaret P Kabuki S Kagaya M Kakuwa J Kalkuhl C Kankanyan R Karastergiou A Karcher K Karczewski M Karkar S Kasperek A Kastana D Katagiri H Kataoka J Katarzynski K Katz U Kawanaka N Kellner-Leidel B Kelly H Kendziorra E Khelifi B Kieda DB Kifune T Kihm T Kishimoto T Kitamoto K Kluzniak W Knapic C Knapp J Knodlseder J Kock F Kocot J Kodani K Kohne JH Kohri K Kokkotas K Kolitzus D Komin N Kominis I Konno Y Koppel H Korohoda P Kosack K Koss G Kossakowski R Kostka P Koul R Kowal G Koyama S Koziol J Krahenbuhl T Krause J Krawzcynski H Krennrich F Krepps A Kretzschmann A Krobot R Krueger P Kubo H Kudryavtsev VA Kushida J Kuznetsov A La Barbera A La Palombara N La Parola V La Rosa G Lacombe K Lamanna G Lande J Languignon D Lapington J Laporte P Lavalley C Le Flour T Le Padellec A Lee SH Lee WH de Oliveira MAL Lelas D Lenain JP Leopold DJ Lerch T Lessio L Lieunard B Lindfors E Liolios A Lipniacka A Lockart H Lohse T Lombardi S Lopatin A Lopez M Lopez-Coto R Lopez-Oramas A Lorca A Lorenz E Lubinski P Lucarelli F Ludecke H Ludwin J Luque-Escamilla PL Lustermann W Luz O Lyard E Maccarone MC Maccarone TJ Madejski GM Madhavan A Mahabir M Maier G Majumdar P Malaguti G Maltezos S Manalaysay A Mancilla A Mandat D Maneva G Mangano A Manigot P Mannheim K Manthos I Maragos N Marcowith A Mariotti M Marisaldi M Markoff S Marszalek A Martens C Marti J Martin JM Martin P Martinez G Martinez F Martinez M Masserot A Mastichiadis A Mathieu A Matsumoto H Mattana F Mattiazzo S Maurin G Maxfield S Maya J Mazin D Mc Comb L McCubbin N McHardy I McKay R Medina C Melioli C Melkumyan D Mereghetti S Mertsch P Meucci M Michalowski J Micolon P Mihailidis A Mineo T Minuti M Mirabal N Mirabel F Miranda JM Mirzoyan R Mizuno T Moal B Moderski R Mognet I Molinari E Molinaro M Montaruli T Monteiro I Moore P Olaizola AM Mordalska M Morello C Mori K Mottez F Moudden Y Moulin E Mrusek I Mukherjee R Munar-Adrover P Muraishi H Murase K Murphy A Nagataki S Naito T Nakajima D Nakamori T Nakayama K Naumann C Naumann D Naumann-Godo M Nayman P Nedbal D Neise D Nellen L Neustroev V Neyroud N Nicastro L Nicolau-Kuklinski J Niedzwiecki A Niemiec J Nieto D Nikolaidis A Nishijima K Nolan S Northrop R Nosek D Nowak N Nozato A O'Brien P Ohira Y Ohishi M Ohm S Ohoka H Okuda T Okumura A Olive JF Ong RA Orito R Orr M Osborne J Ostrowski M Otero LA Otte N Ovcharov E Oya I Ozieblo A Padilla L Paiano S Paillot D Paizis A Palanque S Palatka M Pallota J Panagiotidis K Panazol JL Paneque D Panter M Paoletti R Papayannis A Papyan G Paredes JM Pareschi G Parks G Parraud JM Parsons D Arribas MP Pech M Pedaletti G Pelassa V Pelat D Perez MDC Persic M Petrucci PO Peyaud B Pichel A Pita S Pizzolato F Platos L Platzer R Pogosyan L Pohl M Pojmanski G Ponz JD Potter W Poutanen J Prandini E Prast J Preece R Profeti F Prokoph H Prouza M Proyetti M Puerto-Gimenez I Puhlhofer G Puljak I Punch M Pyziol R Quel EJ Quinn J Quirrenbach A Racero E Rajda PJ Ramon P Rando R Rannot RC Rataj M Raue M Reardon P Reimann O Reimer A Reimer O Reitberger K Renaud M Renner S Reville B Rhode W Ribo M Ribordy M Richer MG Rico J Ridky J Rieger F Ringegni P Ripken J Ristori PR Riviere A Rivoire S Rob L Roeser U Rohlfs R Rojas G Romano P Romaszkan W Romero GE Rosen S Lees SR Ross D Rouaix G Rousselle J Rousselle S Rovero AC Roy F Royer S Rudak B Rulten C Rupinski M Russo F Ryde F Sacco B Saemann EO Saggion A Safiakian V Saito K Saito T Saito Y Sakaki N Sakonaka R Salini A Sanchez F Sanchez-Conde M Sandoval A Sandaker H Sant'Ambrogio E Santangelo A Santos EM Sanuy A Sapozhnikov L Sarkar S Sartore N Sasaki H Satalecka K Sawada M Scalzotto V Scapin V Scarcioffolo M Schafer J Schanz T Schlenstedt S Schlickeiser R Schmidt T Schmoll J Schovanek P Schroedter M Schultz C Schultze J Schulz A Schure K Schwab T Schwanke U Schwarz J Schwarzburg S Schweizer T Schwemmer S Segreto A Seiradakis JH Sembroski GH Seweryn K Sharma M Shayduk M Shellard RC Shi J Shibata T Shibuya A Shum E Sidoli L Sidz M Sieiro J Sikora M Silk J Sillanpaa A Singh BB Sitarek J Skole C Smareglia R Smith A Smith D Smith J Smith N Sobczynska D Sol H Sottile G Sowinski M Spanier F Spiga D Spyrou S Stamatescu V Stamerra A Starling R Stawarz L Steenkamp R Stegmann C Steiner S Stergioulas N Sternberger R Sterzel M Stinzing F Stodulski M Straumann U Strazzeri E Stringhetti L Suarez A Suchenek M Sugawara R Sulanke KH Sun S Supanitsky AD Suric T Sutcliffe P Sykes J Szanecki M Szepieniec T Szostek A Tagliaferri G Tajima H Takahashi H Takahashi K Takalo L Takami H Talbot C Tammi J Tanaka M Tanaka S Tasan J Tavani M Tavernet JP Tejedor LA Telezhinsky I Temnikov P Tenzer C Terada Y Terrier R Teshima M Testa V Tezier D Thuermann D Tibaldo L Tibolla O Tiengo A Tluczykont M Peixoto CJT Tokanai F Tokarz M Toma K Torii K Tornikoski M Torres DF Torres M Tosti G Totani T Toussenel C Tovmassian G Travnicek P Trifoglio M Troyano I Tsinganos K Ueno H Umehara K Upadhya SS Usher T Uslenghi M Valdes-Galicia JF Vallania P Vallejo G van Driel W van Eldik C Vandenbrouke J Vanderwalt J Vankov H Vasileiadis G Vassiliev V Veberic D Vegas I Vercellone S Vergani S Veyssiere C Vialle JP Viana A Videla M Vincent P Vincent S Vink J Vlahakis N Vlahos L Vogler P Vollhardt A von Gunten HP Vorobiov S Vuerli C Waegebaert V Wagner R Wagner RG Wagner S Wakely SP Walter R Walther T Warda K Warwick R Wawer P Wawrzaszek R Webb N Wegner P Weinstein A Weitzel Q Welsing R Werner M Wetteskind H White R Wierzcholska A Wiesand S Wilkinson M Williams DA Willingale R Winiarski K Wischnewski R Wisniewski L Wood M Wornlein A Xiong Q Yadav KK Yamamoto H Yamamoto T Yamazaki R Yanagita S Yebras JM Yelos D Yoshida A Yoshida T Yoshikoshi T Zabalza V Zacharias M Zajczyk A Zanin R Zdziarski A Zech A Zhao A Zhou X Zietara K Ziolkowski J Ziolkowski P Zitelli V Zurbach C Zychowski P

雑誌

ASTROPARTICLE PHYSICS (ISSN:09276505)

巻号頁・発行日

vol.43, pp.3-18, 2013