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Fluid flow and heat transfer in a dual scale porous media is investigated to determine the interfacial convective heat transfer coefficient, numerically. The studied porous media is a periodic dual scale porous media. It consists of the square rods which are permeable in an aligned arrangement. It is aimed to observe the enhancement of heat transfer through the porous media, which is important for thermal designers, by inserting intra-pores into the square rods. A special attention is given to the roles of size and number of intra-pores on the heat transfer enhancement through the dual scale porous media. The role of intra-pores on the pressure drop of air flow through porous media is also investigated by calculation and comparison of the friction coefficient.

To calculate the interfacial convective heat transfer coefficient, the governing equations which are continuity, momentum and energy equations are solved to determine velocity, pressure and temperature fields. As the dual scale porous structure is periodic, a representative elementary volume is generated, and the governing equations are numerically solved for the selected representative volume. By using the obtained velocity, pressure and temperature fields and using volume average definition, the volume average of aforementioned parameters is calculated and upscaled. Then, the interfacial convective heat transfer coefficient and the friction coefficient is numerically determined. The interparticle porosity is changed between 0.4 and 0.75, while the intraparticle varies between 0.2 and 0.75 to explore the effect of intra-pore on heat transfer enhancement.

The obtained Nusselt number values are compared with corresponding mono-scale porous media, and it is found that heat transfer through a porous medium can be enhanced threefold (without the increase of pressure drop) by inserting intraparticle pores in flow direction. For the porous media with low values of interparticle porosity (i.e. = 0.4), an optimum intraparticle porosity exists for which the highest heat transfer enhancement can be achieved. This value was found around 0.3 when the interparticle porosity was 0.4.

The results of the study are interesting, especially from heat transfer enhancement point of view. However, further studies are required. For instance, studies should be performed to analyze the rate of the heat transfer enhancement for different shapes and arrangements of particles and a wider range of porosity. The other important parameter influencing heat transfer enhancement is the direction of pores. In the present study, the intraparticle pores are in flow direction; hence, the enhancement rate of heat transfer for different directions of pores must also be investigated.

The application of dual scale porous media is widely faced in daily life, nature and industry. The flowing of a fluid through a fiber mat, woven fiber bundles, multifilament textile fibers, oil filters and fractured porous media are some examples for the application of the heat and fluid flow through a dual scale porous media. Heat transfer enhancement.

The enhancement of heat transfer is a significant topic that gained the attention of researchers in recent years. The importance of topic increases day-by-day because of further demands for downsizing of thermal equipment and heat recovery devices. The aim of thermal designers is to enhance heat transfer rate in thermal devices and to reduce their volume (and/or weight in some applications) by using lower mechanical power for cooling.

The present study might be the first study on determination of thermal transport properties of dual scale porous media yielded interesting results such as considerable enhancement of heat transfer by using proper intraparticle channels in a porous medium.

The purpose of this paper is to analyze the relationship between the warm/cool feeling of the heat properties of fabrics and the subjective evaluation of the quality of ladies' garment fabrics.

Regression analysis is conducted using stepwise block regression applied to the expert judges' judgment value total hand value, using six blocks of the mechanical properties and one block of the initial maximum values q_max of the heat flux of the heat properties of spring and summer tailored‐type jacket fabrics, as the seven blocks of fabric properties, including the secondary term of each property.

The results of the regression analysis show that the q_max values do not affect the subjective evaluation of the quality of spring and summer tailored‐type jacket fabrics. The results of the regression analysis of ladies' knitted fabric properties applied to the subjective evaluation value have confirmed that the q_max values affect the subjective evaluation of the quality of ladies' knitted fabrics.

This paper usefully describes the relationship between the warm/cool feeling of fabric and the subjective evaluation of the quality of ladies' knitted fabrics.

This chapter discusses the political economy of social stratification in higher education in Japan with a focus on the problem of centralization and decentralization in the allocation of institutions in its higher education system. Specifically, the chapter highlights the role of a nation state government in the process of social stratification formation and the impact of recent equity and institutional higher education policies on the Japanese system of higher education.

This study considers the structure of PISA penetration into education policy through a comparative analysis of Japan and Norway. Many studies on PISA’s impact tend to emphasize the character of PISA result as a norm, such as the concept of “governance by comparison.” This study regards PISA as a norm of educational contents and analyzes the structure of PISA penetration into educational contents policy, with respect to the national curriculum. In describing the situations around PISA in the two countries, the background of the acceptance of PISA, the nature of national curriculum in education policy and its character, and the structure of PISA penetration with the focus being on how PISA is integrated into the national curriculum are analyzed through related documents and literatures. As a result of comparative analysis, three common features are found. First of all, PISA penetration occurred in the context of “PISA Shock” since the importance of PISA itself was recognized. Second, the system of management by objectives was included in the educational system and PISA penetrated into that system as objectives. Third, in relation with this second point, PISA as a norm of educational contents was integrated into existing educational goals or subjects. These features are evident only in the comparison of two countries, so a deeper analysis of PISA penetration will be needed in a future study.

Discusses the need for knowledge management and its required composite. Presents three areas of knowledge management that are regarded as of essential understanding. Considers a knowledge management model that includes an emphasis on information in contrast to the traditional one. Studies the relationship between knowledge management, autopoiesis and apoptosis. Sees both autopoiesis and apoptosis as two of the most important agents in heightening the plateau of knowledge management and its systems.