265 research outputs found

    The Function of the IT-Cleft Construction

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    Emerging location based services and its privacy control

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    Empirical Analysis of Factors Promoting Product Innovation in ASEAN Economies: Focusing on Absorptive Capacity and ICT Use

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    In recent years, East Asian economies have been rapidly developing. The reason is that firms have been successfully achieving product and process innovation by introducing advanced technologies and know-how from MNCs. In order to enhance innovation, firms have to own technology, capability and ICT use. In particular, collaborations with outside organizations such as MNCs (Multi-national corporations), universities, public organizations, local firms are indispensable for firms in developing economies. Authors’ previous research clarified external linkages enhance innovation capability and ICT use, and innovation capability and ICT use promote product innovation in ASEAN firms. These studies analyzed under what conditions firms can promote absorptive capability if they had external linkages. Whether or how absorptive capacity affected innovation capability and ICT use were not explained there. Based on survey data from four ASEAN economies such as Indonesia, the Philippines, Thailand, and Vietnam, from 2013 to 2014, this study clarifies how absorptive capacity, ICTs, and innovation capability such as QC and cross-functional team enhance product innovation by using SEM (Structural equation modeling). As a result, the following causality from external linkages (origin) to innovation (final outcome) is demonstrated: (i) absorptive capacity is enhanced by external linkages such as local firms, public organizations, and universities; (ii) absorptive capacity enhances innovation capability; (iii) innovation capability enhances ICT use; and (iv) innovation capability and ICT use promote product innovation. These are similar to those of authors’ previous research. Since data are different, it is difficult to compare the results, but the robustness of the results is demonstrated

    Role of ICT in the innovation process based on firm-level evidence from four ASEAN economies: An SEM approach

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    Although the East Asian economies have been developing in the 21th century, innovation is indispensable for their further economic development. In order to achieve successful innovation, firms have to elevate their capability including technology, human resources, business organization, ICT use and so on by collaborating with outside organizations such as MNCs (Multi-national companies), universities, public organizations. The outside organizations are termed as external linkages. Based on authors' survey data of four ASEAN economies such as Vietnam, Indonesia, the Philippines, and Thailand from 2012 to 2013, this paper examines how factors such as organizational learning, ICT use, and technology enhance product and process innovation. These factors are used as latent variables in analysis and consist of the following variables: (i) technology such as capital goods, (ii) organizational learning including QC, cross-functional teams, (iii) ICT use such as B2B, B2C, EDI, SCM, ERP, CAD/CAM, groupware, SNS etc., and (iv) external linkages, such as MNCs, local and public organizations, and universities. This study employs SEM (Structural equation modeling) in order to analyze the causal relationships not only among the above four latent variables but also between these and innovation. The six hypotheses were postulated as follows: H1. External linkages enhance organizational learning; H2. External linkages improve capital goods; H3. External linkage improves ICT use; H4. Organizational learning improves capital goods; H5. Organizational learning improves ICT use; and H6. Organizational learning, ICT use, and capital goods enhance innovation. Estimation results on product innovation demonstrate that organization learning, technology (capital goods), and ICT use enhance product innovation. On the other hand, organization learning promotes technology (capital goods) and ICT use, which promotes process innovation. Accordingly, this study clarifies that ICT use, technology and innovation capability enhance product and process innovation

    Comparative survey of go/no-go results to identify the inhibitory control ability change of Japanese children

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    This research, conducted in 1998 and 2008, uses go/no-go data to investigate the fundamentals of cognitive functioning in the inhibitory control ability of Japanese children. 844 subjects from kindergarten to junior high school participated in go/no-go task experiments. Performance of go/no-go tasks, which are frequently used to investigate response inhibition, measures a variety of cognitive components besides response inhibition. With normal brain development, the ability to inhibit responses improves substantially in adolescence. An increase over time in the error rate during the go/no-go tasks of subjects of the same age indicates that these processes are not functioning properly. Comparisons between the 1998 and 2008 data revealed several differences in error rates. In 2008, there were increases in the number of errors in groups from each age range. The comparison also revealed that overall error rates peaked at later ages in the 2008 subjects. Taken together, these results show changing conditions in the inhibitory function of the prefrontal cortex. However, the reason for these changing conditions remains unclear. While a lifestyle questionnaire revealed several differences in factors such as bedtimes and hours spent watching TV, analysis did not reveal a significant correlation.ArticleBioPsychoSocial Medicine.8(1):14(2014)journal articl

    Comparison of cortical activation during Mahjong game play in a video game setting and a real-life setting

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    The purpose of this study was to compare the hemodynamic changes that occur during Mahjong game play in virtual and real-life settings. Fourteen healthy right-handed men (average age ± standard deviation; 36.7 ± 14.9 years) played: 1) a Mahjong solitaire game on a video console against virtual rivals; 2) a Mahjong game against human opponents without conversation; and 3) a Mahjong game against human opponents with conversation. We measured oxygenated hemoglobin concentration at 44 locations over both hemispheres during Mahjong game play in each setting using near-infrared spectroscopy. The increase in oxygenated hemoglobin concentration at several locations, including Broca’s area, the somatosensory cortex, the somatosensory association cortex, the supramarginal gyrus part of Wernicke’s area, the primary and auditory association cortex, the angular gyrus part of Wernicke’s area, and the associative visual cortex was greater during game play in the real-life settings than during game play in the video game setting. There were no significant differences during game play in real-life settings without and with conversation. Each cortical area correlated with broad or specific areas. The common correlation areas were found at Angular gyrus part of Wernicke’s area of left hemisphere during real-life settings without and with conversation, but not during game play in a video game setting. These results suggest that the brain responds differently to game play in real world and virtual world settings, and indicate that comparison of games played in the virtual world and the real world may be an effective model to enhance understanding of the effects of video game on the brain.ArticleBiochemistry & Analytical Biochemistry.4(2):164(2015)journal articl

    PKR is necessary for osteoclastogenesis.

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    Double-stranded RNA-dependent protein kinase (PKR) is involved in cell cycle progression, cell proliferation, cell differentiation, tumorgenesis, and apoptosis. We previously reported that PKR is required for differentiation and calcification in osteoblasts. TNF-α plays a key role in osteoclast differentiation. However, it is unknown about the roles of PKR in the TNF-α-induced osteoclast differentiation. The expression of PKR in osteoclast precursor RAW264.7 cells increased during TNF-α-induced osteoclastogenesis. The TNF-α-induced osteoclast differentiation in bone marrow-derived macrophages and RAW264.7 cells was markedly suppressed by the pre-treatment of PKR inhibitor, 2-aminopurine (2AP), as well as gene silencing of PKR. The expression of gene markers in the differentiated osteoclasts including TRAP, Calcitonin receptor, cathepsin K and ATP6V0d2 was also suppressed by the 2AP treatment. Bone resorption activity of TNF-α-induced osteoclasts was also supressed by 2AP treatment. Inhibition of PKR supressed the TNF-α-induced activation of NF-κB and MAPK in RAW264.7 cells. 2AP inhibited both the nuclear translocation of NF-κB and its transcriptional activity in RAW264.7 cells. 2AP inhibited the TNF-α-induced expression of NFATc1 and c-fos, master transcription factors in osteoclastogenesis. TNF-α-induced nuclear translocation of NFATc1 in mature osteoclasts was clearly inhibited by the 2AP treatment. The PKR inhibitor C16 decreased the TNF-α-induced osteoclast formation and bone resorption in mouse calvaria. The present study indicates that PKR is necessary for the TNF-α-induced osteoclast differentiation in vitro and in vivo

    Surgical resection combined with perioperative chemotherapy for a patient with locally recurrent, previously stage IV thymic small-cell carcinoma : A case report

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    An 83-year-old Japanese man visited our hospital with dyspnea and general fatigue. Computed tomography (CT) revealed a tumor in the anterior mediastinum, bilateral pleural effusion, pericardial fluid, and multiple liver nodules. We performed a CT-guided tumor biopsy, and the patient was diagnosed with thymic small-cell carcinoma, Masaoka–Koga stage classification IVb. The patient received four cycles of carboplatin and etoposide, and all lesions disappeared on CT. However, after 6 months, CT revealed a recurrent tumor in the anterior mediastinum. After one cycle of rechallenge chemotherapy, we performed extended total thymectomy followed by another three cycles of chemotherapy. More than 2.5 years after the last chemotherapy session, the patient’s carcinoma did not recur. Thus, this case suggests that salvage surgery may be a treatment option for local recurrence of thymic carcinoma after complete remission with chemotherapy, even in patients with stage IV cancer

    Validity and reliability of a smartphone application for self-measurement of active shoulder range of motion in a standing position among healthy adults

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    [Background] Shoulder range of motion (ROM) is one of the most important indicators of shoulder disease severity, function, and physical assessment. A universal goniometer (UG) was used as a gold standard for ROM measurement. Recently, smartphone applications for ROM measurement have attracted attention as alternatives to UG. This study aimed to investigate the validity and reliability of active ROM measurements using a smartphone application goniometer that can be used by patients in a standing position. [Methods] The dominant shoulders of 19 healthy participants were included in the study. The 2 observers who were physical therapists used the UG, whereas the participants used a smartphone application goniometer to measure the shoulder ROM. A recorder, who is a physical therapist independent of the observer and participant, read and recorded the shoulder ROM measurements. The order of the measurement movements and devices used was randomized. [Results] Agreement between the smartphone application goniometer and UG (percentage of participants for whom the difference between the UG and application measurements was within ±20% of the mean of the goniometer and application measurements) ranged between 42% and 100%. The intraclass correlation coefficient values (3, 1) for the agreement between the smartphone application goniometer and UG was between 0.72 and 0.97, showing significant and approximately perfect correlations. [Conclusion] High agreement with the UG showed excellent validity, indicating that the smartphone application goniometer used by the participants in the standing position is an excellent method and instrument. The results suggest a simpler, more reliable, practical, and inexpensive method for measuring ROM required for telerehabilitation
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