We present our AKARI study of massive star forming regions where a large-scale cloud-cloud collision possibly contributes to massive star formation. Our targets are Spitzer bubbles, which consist of two types of bubbles, closed and broken ones; the latter is a candidate of the objects created by cloud-cloud collisions. We performed mid- and far-infrared surface photometry toward Spitzer bubbles to obtain the relationship between the total infrared luminosity, LIR, and the bubble radius, R. As a result, we nd that LIR is roughly proportional to R where  = 2:10:4. Broken bubbles tend to have larger radii than closed bubbles for the same LIR.

Social media was originally based on the ideological and technological foundations of Web 2.0 and is described as “user-generated content” (Kaplan & Haenlein, 2010). Although initially used for communication among internet users for privacy, it has become one of the most powerful online networking tools, and in the last few years has been widely practiced in the real world to enhance relationships between businesses and customers. Virtual tourist communities are not a new concept; they have been used for more than 10 years by tourists to exchange opinions and experiences of certain travel destinations. In tourism, internet based social communities have greatly expanded recently as a result of Web 2.0 technologies’ development. Tourists use the Internet to obtain information on trips, and share experiences related to their trip before, during and after their vacation (Parra-Lopez et al., 2011). Therefore, behaviors such as sharing photos and videos, writing travel experiences in blogs and microblogs, ranking travel destinations and posting opinions on social forums (for example, TripAdvisor) are becoming generalized (Chung & Buhalis, 2008) into what has been called Travel 2.0 (Adam, et al., 2007). The purpose and importance of this study is to explore how tourists perceive the value of social media as practiced in the tourism industry. We also investigate travel agencies’ social media marketing activities, and how tourists’ perceived value of social media affects their intention to use social media for organizing their vacation. Conceptual foundations Perceived value of using social media in tourism Perceived value is treated as a major element in a number of tourism research papers (for example, Parasuraman & Grewal, 2000; Sweeny & Soutar, 2001; Jin et al. 2015). As Parra-Lopez et al. (2011, pp.641) said, “the identification of the types of customer value perceived by travelers using social media for trip planning purposes is very essential, because it can provide significant guidelines on how to design the information sources, the structure and the functionality of social media in order to enhance their web traffic, usage and competiveness”. Realizing the essential role of social media in the tourist industry, and clarifying how to measure the perceived value of using social media is required. Because perceived value is defined as ‘cognitive-affective evaluation’ in this study, we employ both cognitive and affective variables to measure the perceived value of using social mediato organize vacations. This study applies four dimensions – ‘functional’, ‘social’, ‘altruism’ and ‘trust’ from Parra-Lopez et al.’s (2011) study - to measure the value that travelers perceive from using social media to organize their vacations. Because both cognitive and affective value are used to evaluate a product or service during the purchasing process (Bajs, 2015), it seems reasonable to assume that ‘function’, ‘social’, ‘altruism’, and ‘trust’ are regarded as essential when measuring the perceived value of using social media to organize vacations. Such propositions and findings provide valuable insights that enable us to introduce our Hypothesis 1. H1: ‘Functional’, ‘Social’, ‘Altruism’ and ‘Trust’ are the dominant dimensions in the perceived value of using social media in organizing vacations. The inter-relationship of attitudes towards social media marketing activities and the perceived value and intention of using social media to organize vacations Social media is seen as one of the most powerful communication tools, and social media marketing (referred to henceforth as ‘SMM’) is used by business companies to build and maintain relationships with their customers in various fields (Kim & Ko, 2012). In previous studies, such as Kim and Ko (2012) as well as Teo and Tan (2002), it has been claimed that customers’ attitudes towards SMM activities affect brand equity. This conclusion is also supported by Chan and Guillet’s (2011) study, which shows the important role of SMM in the hospitality industry. Nowadays, most travel agencies in Japan have created their social communities aiming to enhance their relationship with customers and promote their travel products. Aker and Topcu (2011) suggest that attitude greatly affects people’s purchase intention and behavior. Moreover, the wide acceptance of SMM also means that a positive attitude towards SMM affects the perceived value of social media. It has been clarified that perceived value is positive when the benefits are greater than the sacrifices (Zeithaml, 1988). As more and more tourists rely on social media to enhance their vacations, this suggests that the perceived benefit of social media is greater than the sacrifice, and therefore its perceived value positively affects the behavior intention of tourists who use social media to organize vacations. This academic background leads us to Hypothesis 2. H2: Both direct effect (i.e. attitude towards SMM activities→Intention) and indirect effect (i.e. attitude towards SMM activities→ Perceived value→Intention) will provide a good explanation of tourists’ intention of using social media to organize vacations. Methodology Proposed conceptual model Based on the theoretical background, this study proposes a conceptual model (see Figure 1) to show the inter-relationship of ‘attitudes towards SMM activities’, ‘perceived value’ and ‘behavior intention’. Figure 1: Conceptual Model Measurement This study involves items which have been used in past research. All items were developed based on the 7-point Likert-type scale ranging from ‘strongly agree’ to ‘strongly disagree’ (see Table 1).Data collection The empirical data for this study was collected by an online survey conducted by one of the biggest research companies in Japan from March 13th to March 16th, 2015. A screening test was conducted to select suitable respondents with experience of using social media to organize their vacation and had accessed or used travel agencies’ social media, such as Facebook, Blog, and Twitter. Finally, due to the limited research budget, 622 valid samples were collected to be used in analysing the conceptual model. Data analysis results As all items presented in this study are cited from past research, we employed second-order confirmatory factor analysis (CFA) directly to explore the dominant dimensions of the perceived value of using social media to organize vacations (H1), and covariance structure analysis to investigate the inter-relationship among attitudes towards SMM activities, perceived value and behavior intention (H2). The results of data analysis are shown below (see Figure 2&3). Conclusions and managerial implications Based on the results reported in the present study, ‘functional’, ‘social’, ‘altruism’ and ‘trust’ are shown as dominant dimensions of perceived value in social media literature, thus supporting hypothesis 1. However, these four dimensions play different roles in perceived value. Compared with other dimensions, ‘altruism’ appears to be more essential. This result can be explained by the usage of social media. Tourists tend to share their experiences, opinions, photos and videos about certain travel destinations in what is called ‘altruism dimensions’. These tourists’ behavior is not for the benefit of others but for self-satisfaction (Baym, 2010) and is believed to be the most important incentive for using social media. Concerning the inter-relationship of attitudes towards SMM, perceived value and the intention of using social media to organize a vacation, contrary to our hypothesis, tourists’ attitudes towards SMM activities conducted by travel agencies do not seem to affect their behavior intention of using social media to organize their vacation (.05). The perceived value of social media seems to play a significant mediating role between attitudes towards SMM and behavior intention. In other words, the indirect influence (.585) through perceived value is greater than the direct influence (.05) of attitudes toward SMM on behavior intention. This result implies that travel agency managers should know how to increase the perceived value of social media, instead of only attempting to enhance SMM activities. Limitations Social media’s commodification in Japan is still a new concept, and for Japanese tourists, the practice of social media in the tourist industry is relatively novel. In other words, social media’s commodification has not been developed enough in Japan. Thus, the results gained from the empirical study should be compared in the countries where social media is more developed.

The purpose of this study is to explore the effects of social media in Customer Relationship Management (CRM) based on a theoretical foundation. Social media was firstly used as a new communication tool by internet users, and is being commercialized as a powerful tool to build and maintain long-term relationships between customers and businesses. This study focuses on service sectors and aims to clarify how social media helps companies innovate traditional CRM. Social CRM is seen as one of these service innovations and is highlighted in this paper.

In order to clarify the wear resistance as cutting tools, the effect of oxygen addition on oxidation behavior of the β-Si3N4 ceramics with 5 mass% Y2O3 and 2 or 4 mass% Al2O3 was investigated by performing oxidation tests in air at 1300° to 1400°C and cutting performance tests. From test results, we could conclude that the mechanical properties of β-Si3N4 ceramics depending on oxygen introduction are much effective on cutting performance improvements of β-Si3N4 ceramics.

WC-TiC-TaC binderless cemented carbide was oxidized under low partial pressure of oxygen (50ppm) at 873K for 1 to 20 h. Surface roughness was measured using atomic force microscope, and effect of TiC amount on oxidation behavior of the carbide was investigated. WC phase was oxidized more easily than WC-TiC-TaC solid solution phase. With an increase in TiC amount, WC-TiC-TaC phase increased and the oxidation resistance of the carbide increased.

The effect of TiC content on oxidation behavior of the sintered WC-TiC-TaC alloys with 2 mass% TaC and different TiC amounts of 3-45 mass% was investigated through oxidation tests in air at 973K. As a result of the tests, it was revealed that with increasing TiC content in the alloys, mass changes caused by oxidation and thickness of the scale decreased. Thus, it is considered that the main component of the scales changed gradually from to with increasing TiC content in the alloys, and oxygen diffusion through the scale to the alloys was inhibited gradually.

Among powder metallurgy products, complex shaped parts are difficult to be produced. Even i9f it shall be compacted until pet shape, the parts are easily apt to crack. thus it causes inferior productivity.It is present condition that net ahaped parts are obtained by adding after treatment. Clutch hub, pulley, representative partawifh upper 2 steps, tower 3 steps parts are corresponded to the above case. In recent years. muired parts are get to be thinner and thinner, and therefore extremely high compacting techniaues are required. Definition of most preferable com~actingp arts are I) Uniform density 2) Non crack and 3) Realization of net shape or near net shape productlon. For the above purpose, YOSHIZUKA baa developed n now oreas applying hydraulic servo control system.