著者
Chatterjee U. Shi M. Kaminski A. Kanigel A. Fretwell H. M. Terashima K. Takahashi T. Rosenkranz S. Li Z. Z. Raffy H. Santander-Syro A. Kadowaki K. Norman M. R. Randeria M. Campuzano J. C.
出版者
American Physical Society
雑誌
Physical review letters (ISSN:00319007)
巻号頁・発行日
vol.96, no.10, pp.107006, 2006-03
被引用文献数
74

The autocorrelation of angle resolved photoemission data from the high temperature superconductor Bi2Sr2CaCu2O8+delta shows distinct peaks in momentum space which disperse with binding energy in the superconducting state, but not in the pseudogap phase. Although it is tempting to attribute a nondispersive behavior in momentum space to charge ordering, a deconstruction of the autocorrelation reveals that the nondispersive peaks arise from the tips of the Fermi arcs, which themselves do not change with binding energy.
著者
Takeaki Wada
出版者
Global Business Research Center
雑誌
Annals of Business Administrative Science (ISSN:13474464)
巻号頁・発行日
pp.0181119b, (Released:2019-02-07)
参考文献数
24
被引用文献数
2

Many small and medium-sized enterprises' managers hesitate to launch new businesses for the diversification or business change. In the case of new business launching by Yamato Industrial and Yamaguchi Kasei, decline of their existing businesses was a threat, and simultaneously, it has become an opportunity for launching new business, just as the saying “tough times bring opportunity.” In addition, the experience of launching a second business, rather than experience at startup, will motivate managers to launch businesses continuously.
著者
Ohno Toshihiko Okuda Takayoshi Yamada Jun
出版者
一般社団法人日本物理学会
雑誌
J Phys Soc Jpn (ISSN:00319015)
巻号頁・発行日
vol.45, no.1, pp.244-246, 1978-07-15
被引用文献数
1

The probabilities of the two-photon ionization of cesium atoms by ruby laser light from $6p_{1/2}$, $6p_{3/2}$, $5d_{3/2}$ and $5d_{5/2}$ excited states were calculated. The densities of the excited atoms in the cesium discharge tube were estimated from the measured density and temperature of electrons. The calculated increases of the electron density show good agreement with the experimental results.
出版者
Institute of Electrical and Electronics Engineers
雑誌
IEEE Journal of Selected Topics in Quantum Electronics (ISSN:1077260X)
巻号頁・発行日
vol.12, no.1, pp.71-77, 2006
被引用文献数
47

We demonstrate coupled-mode characteristics and bistability in photonic molecule lasers composed of evanescent-coupled GaInAsP twin microdisks. First, we show room-temperature continuous-wave operation by photopumping and discuss the unique behavior of coupled modes, i.e., the anticrossing and splitting characteristics of bonding and antibonding modes. Next, we present the clear bistability, which is observed for the antibonding mode by nonuniform pumping with an effective power of nearly 40 mu W. It is explained by rate equation analysis, which assumes saturable absorption. The analysis also predicts mode switching by the carrier-induced refractive index change. A micron-sized device with a very low power consumption will allow large scale integration of optical memories, optical flip-flops, and so forth.
著者
Maryam MOSHAVERINIA Ali BORZABADI-FARAHANI Abdi SAMENI Alireza MOSHAVERINIA Sahar ANSARI
出版者
The Japanese Society for Dental Materials and Devices
雑誌
Dental Materials Journal (ISSN:02874547)
巻号頁・発行日
vol.35, no.5, pp.817-821, 2016-09-29 (Released:2016-10-01)
参考文献数
25
被引用文献数
6 24

Present study evaluated effects of addition of Nanoparticles fluorapatite (Nano-FA) on microhardness and fluoride release of a Glass Ionomer Cement (GIC, Fuji IX GP Fast). Forty-eight specimens prepared, divided equally into 4 groups (2 with Nano-FA); after 24 h and one week Vickers microhardness (HV) was measured. Nano-FA specimens were made from addition of nano-FA to Fuji IX powder (glass powder/Nano-FA ratio=20:1 wt/wt, 3.6:1 P/L ratio). At 24 h, mean (95% CI) HV for GIC and Nano-FA GIC were 40.59 (39.51–41.66) and 46.89 (45.95–47.82) kg/mm2, and at one week 44.98 (44.23–45.72), 53.29 (52.58–53.99) kg/mm2, respectively. Findings indicated higher HV in Nano-FA specimens (F=221.088, p<0.001). Twenty-eight days weekly cumulative fluoride release in both groups was not different (p>0.05). MTT assay exhibited no inhibition of cell proliferation or reduction in metabolic activity in experimental [84.0 (3.3)] or control groups [85.1 (4.7)] with no difference between groups (p>0.05). New nano-FA GIC was biocompatible and showed improved surface hardness. Future clinical trials can verify the usefulness of Nano-FA GIC.
著者
Matsunaga Wataru Kobayashi Akie Kato Atsushi ITO Hidetaka
出版者
Oxford University Press
雑誌
Plant and cell physiology (ISSN:00320781)
巻号頁・発行日
vol.53, no.5, pp.824-833, 2012-05-01
参考文献数
44
被引用文献数
4 64

Environmental stress influences genetic and epigenetic regulation in plant genomes. We previously reported that heat stress activated a copia-like retrotransposon named ONSEN (Ito et al., 2011). To investigate the heat sensitivity and transgenerational activation of ONSEN, we analyzed the stress response by temperature shift and multi-treatments of heat stress. ONSEN was activated at 37℃, and the newly inserted ONSEN was transcriptionally activate and mobile to the next generation subjected to heat stress, indicating that the regulation of ONSEN is independent from positional effects on the chromosome. Reciprocal crosses with activated ONSEN revealed that the transgenerational transposition was inherited from both sexes, indicating that the transposition is suppressed independent of gametophytic regulation. We showed previously that ONSEN was transposed in mutants deficient in siRNA biogenesis, including nrpd2 and rdr2, but not dcl3. To define the functional redundancy of DCL proteins in Arabidopsis, we analyzed ONSEN activation in mutants deficient in Dicer-like proteins, including dcl2, dcl3 and dcl4. ONSEN was nearly immobile in a single Dicer mutant; however, some transgenerational transpositions were observed in dcl2/dcl3/dcl4 triple mutants subjected to heat stress. This indicated that the Dicer family is redundant for ONSEN transposition. To examine the activation of ONSEN in undifferentiated cells, ONSEN transcripts and synthesized DNA were analyzed in heat-stressed callus tissue. In contrast with vegetative tissue, high accumulation of the transcripts and amplified DNA copies of ONSEN were detected in callus. This result indicated that ONSEN activation is controlled by cell-specific regulatory mechanisms.
著者
Atsushi Akiike Sotaro Katsumata
出版者
Global Business Research Center
雑誌
Annals of Business Administrative Science (ISSN:13474464)
巻号頁・発行日
pp.0180912a, (Released:2018-10-13)
参考文献数
47
被引用文献数
4

The word “Galapagos” has garnered attention in Japan as an explanation for the loss of global competitiveness by the Japanese economy and Japanese companies, even while the Japanese companies are competitive domestically. The term has particularly been used with mobile phones in Japan, which are known as “Galapagos ke-tai.” An analysis of newspaper articles showed that discussions on Galapagos mobile phones were primarily about technology, technology standards, and features. However, smartphones that looked like Galapagos ke-tai came to be called “Garaho” later, and the term Galapagos then took on the meaning of appearance.
著者
WonWook Song Atsushi Akiike Young Won Park
出版者
Global Business Research Center
雑誌
Annals of Business Administrative Science (ISSN:13474464)
巻号頁・発行日
pp.0180813a, (Released:2018-10-10)
参考文献数
15
被引用文献数
1

Prior research on customized component transactions asserts that from a manufacturer’s perspective, customization costs can be reduced by creating collaborative relationships. However, there are few researches on the supplier’s perspective. In this paper, a survey of Japanese suppliers revealed that (a) supplier performance improves when there are more proposals both from and to customers, and that (b) supplier performance deteriorates when proposals only come from the customer. In other words, in case of the top-down relationship in (b), supplier performance deteriorates, but in the bidirectional relationship in (a), supplier performance improves.
著者
Atsushi AKIIKE Shumpei IWAO
出版者
Global Business Research Center
雑誌
Annals of Business Administrative Science (ISSN:13474464)
巻号頁・発行日
vol.14, no.5, pp.231-246, 2015-10-15 (Released:2015-10-15)
参考文献数
60
被引用文献数
5 4

The Innovator's Dilemma (Christensen, 1997) has been cited in many studies since Christensen published it in 1997. Some of these studies have advocated that concepts such as “dynamic capability,” “ambidexterity,” and “market orientation” can be used to overcome the environmental changes caused by the innovator's dilemma. However, these studies are categorized into two general types that are not logical refutations: (a) those which merely suggest the concept without suggesting an opposing example, and (b) those which do not demonstrate that a trajectory disruption has occurred even when suggesting an example. We must demonstrate that a trajectory disruption has occurred and then suggest a case in which the environmental changes were mitigated to suggest an example of overcoming the innovator's dilemma. However, arguments exist that doubt Christensen's concept of trajectory disruption, indicating that the arguments are not facile.
著者
Atsushi AKIIKE
出版者
Global Business Research Center
雑誌
Annals of Business Administrative Science (ISSN:13474464)
巻号頁・発行日
vol.12, no.5, pp.225-236, 2013-10-15 (Released:2013-10-15)
参考文献数
24
被引用文献数
9 15

The Abernathy-Utterback model (A-U model) has significant impacts on innovation studies and is adopted by many scholars. Although many studies quote Abernathy and Utterback (1978), the dominant design idea was not explicitly shown in the model. Thus, the model used in Abernathy and Utterback (1978) differs from the A-U model imaged by us. The A-U models, adopted by many scholars, are actually formulated through the accumulation of the three critical works of Utterback and Abernathy (1975), Abernathy and Utterback (1978), and Abernathy (1978). The A-U models were finally completed by Abernathy (1978), becoming the A-U models that were imaged by us. However, Teece (1986) and Utterback (1994), who significantly popularized the A-U model, quoted the model in Abernathy and Utterback (1978) as a completed model. This was re-quoted, and the misconception that the A-U model was the same as the model in Abernathy and Utterback (1978) was disseminated. Abernathy and Utterback's (1978) original paper is a strange compilation that independently introduces a diagram of the A-U model even before the title page. Moreover, there is neither an explanation nor a reference to the diagram in the paper. In fact, many researches quoting these works are unaware of this fact.
著者
Ayako Aizawa
出版者
Global Business Research Center
雑誌
Annals of Business Administrative Science (ISSN:13474464)
巻号頁・発行日
vol.17, no.4, pp.171-182, 2018-08-15 (Released:2018-08-15)
参考文献数
18
被引用文献数
4

The development and diffusion of compliance activities in Japanese companies from around 2000 can be thought of as a typical example of the institutional isomorphism discussed by DiMaggio and Powell (1983), that is, isomorphism mechanisms that were at work irrespective of performance (Aizawa, 2018a). Snow Brand Milk Products had a corporate scandal in 2000, and the compliance activities it began soon after comprised institutional isomorphism. In actuality, at that time there was no extraordinary worsening of performance, though directly after the scandal in 2002, the company was beset by a worsening of performance that put the company in danger, and it waged its survival on a wide-ranging rethinking of the details of its compliance activities to make them more unique. In addition, it spun off core businesses and transferred some of its shares in order to win back trust. Companies that have confronted management crises and have survived work toward restoring trust using similar methods. In other words, even when the same company doesn’t have selection pressures, institutional isomorphism may arise, and when there are selection pressures, competitive isomorphism may arise.
著者
Youngkyo Suh
出版者
Global Business Research Center
雑誌
Annals of Business Administrative Science (ISSN:13474464)
巻号頁・発行日
vol.17, no.3, pp.123-132, 2018-06-15 (Released:2018-06-15)
参考文献数
11

It has been explained in the past that multinational firms gain competitive advantage by creating a structure for the international division of labor through allocating certain activities in their value chains to advantageous locations. Actually, however, a firm's subsidiaries are exposed to business environments that differ from those of their home country; hence, an international division of labor may have resulted from an emergent strategy. The Ikegami Mold Engineering Group has production sites in Japan, Mexico, and China that manufacture and sell molds. The Mexico site differs from the others in that it repairs and overhauls molds. This business was not planned in advance but was rather built from an emergent strategy because of the business environment in Mexico: the industrial infrastructure is not suited to the manufacture of molds, the Mexican market exhibited demand for the repair and overhaul of molds, and Ikegami had built up the technological capabilities to respond to that need. Thus, a new business was born to repair and overhaul molds.
著者
Kenichi Kuwashima
出版者
Global Business Research Center
雑誌
Annals of Business Administrative Science (ISSN:13474464)
巻号頁・発行日
vol.17, no.3, pp.95-108, 2018-06-15 (Released:2018-06-15)
参考文献数
27
被引用文献数
12

From the mid-1990s to the mid-2000s, major institutional reform was undertaken in Japan to promote university–industry collaboration. The term “university–industry collaboration” appeared frequently in the media and became a fad. However, this did not last long, and it peaked in 2003. University–industry collaboration entered the spotlight again after 2010, when “open innovation” (Chesbrough, 2003) became popular in Japan. At that time, a new type of university–industry collaboration emerged. University–industry collaboration in Japan has traditionally taken the form of “small-scale, short-term, individual” contracts. In contrast, this new type of collaboration features “large-scale, long-term, comprehensive” contracts.
著者
田原 誠 柴田 篤 山口 志津代 浜田 悦昌
出版者
公益社団法人 日本薬理学会
雑誌
日本薬理学雑誌 (ISSN:00155691)
巻号頁・発行日
vol.133, no.4, pp.215-226, 2009 (Released:2009-04-14)
参考文献数
44
被引用文献数
1

スニチニブリンゴ酸塩(以下スニチニブと記す)は腫瘍の細胞増殖,血管新生および転移の制御に関与する様々な受容体型チロシンキナーゼ(RTK)におけるシグナル伝達を選択的に遮断する,マルチターゲットの経口チロシンキナーゼ阻害薬である.スニチニブおよび主要代謝物(脱エチル体,SU012662)は酵素レベルまたは細胞レベルのin vitroアッセイにおいてVEGFR-1,-2および-3,PDGFR-αおよび-β,KIT,CSF-1R,FLT-3ならびにRETのチロシンキナーゼ活性を強く阻害した.またスニチニブはin vitroで内皮細胞の増殖および発芽を阻害し,その作用機序として血管新生阻害活性が重要であることが示された.さらに,上記の標的RTKを発現するGISTを含む各種腫瘍細胞の増殖を阻害した.スニチニブはin vivo試験においても標的RTKリン酸化,VEGF誘導性の血管透過性亢進および血管新生を阻害し,種々の異種移植腫瘍モデルに対し,抗腫瘍効果(増殖阻害および腫瘍退縮)を示した.これらの試験の用量反応相関およびPK/PD解析の結果から,スニチニブの有効血漿中濃度は50 ng/mLと推定され,この結果は臨床試験における目標血漿中濃度の設定にも用いられた.臨床試験では,イマチニブに治療抵抗性または不忍容の消化管間質腫瘍(GIST)患者および腎細胞癌患者におけるスニチニブの有効性および安全性が国内外で検討され,いずれの疾患においても,日本人患者における治療成績は外国人患者における成績と同様に優れた有効性を示した.また,日本人患者におけるスニチニブによる有害事象発現の頻度は外国第III相試験より高かったが,概して可逆的で,減量や休薬により管理可能であった.これらの非臨床および臨床試験成績よりスニチニブの有用性が明らかとなり,本邦ではイマチニブ抵抗性のGISTおよび根治切除不能または転移性の腎細胞癌の治療薬として2008年4月に承認された.
著者
Yufu Kuwashima
出版者
Global Business Research Center
雑誌
Annals of Business Administrative Science (ISSN:13474464)
巻号頁・発行日
vol.17, no.1, pp.23-30, 2018-02-15 (Released:2018-02-15)
参考文献数
10
被引用文献数
2

With cosmetics, one cannot determine at a glance exactly what product a person is using. This paper analyzes the impact of a consumer network on cosmetics, which are goods that are not conspicuous. Comments in word-of-mouth websites for cosmetics is used as a proxy variable for purchasing behavior, and the relationship between a consumer network and purchasing behavior in a social network is analyzed. In cosmetics, which are not conspicuous, this paper has confirmed that consumers exhibit the same purchasing behavior as when they are in a relationship with structural equivalence within a network and not just in relationships with cohesion.