In recent years, the prevalence of network devices such as smartphones, smart appliances, and various sensors has increased. As a result, interest in and demand for home networks has steadily increased. So, auto-configuration problems in home networks are very important and must be addressed, because some household members will not be familiar with the Information Technology (IT) devices and thus find it difficult to use home networks. Many studies have been undertaken in a variety research fields and standards for the home network autoconfiguration problem. However, the conventional research and standards have a significant problem in that each home device requires middleware to be installed and must follow a standard configuration for home gateways. In this paper, we propose a new method for the auto-configuration of home networks in home cloud environments using the Software Defined Networking (SDN) controller. The SDN controller has two key roles for home network auto-configuration: auto-recognition and registration of home devices, and management of home devices according to the home network connection state. It allows the home network to be automatically configured without middleware and home gateways, which are required in the existing standards. In addition, home networks can be configured to utilize SDNs that satisfy the various network requirements and functions required by each of the home services. The experimental results verify the home network auto-configuration, the usability of the proposed method, and the SDN use case satisfy the requirements of each home service.

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This paper proposes a new strategy for assisting SMEs in S. Korea to grow by the use of free technologies, which include expired patents, patents that are effective in other countries but not in S. Korea, and technologies that were published without being patented. A key question answered in this paper is how to find valuable technologies developed by large companies that can be utilized by domestic SMEs. A procedure for identifying emerging free technologies was developed and is explained with an example. A quantitative analysis of technology trend was conducted on PCT's published patents that did not include S. Korea as a designated country, and then emerging IPC subclasses were identified. Among those emerging technology areas, the subclass areas where the number of Korean inventors is small were identified as key emerging free technology areas. Our method for identifying emerging free technologies can assist domestic SMEs to advance in the international market and guide the development of a national industrial strategy.

A Thomson scattering (TS) system has been utilized to measure the electron temperature and density of the core region of Versatile Experiment Spherical Torus (VEST). Recently, the laser injection system is successfully upgraded adopting the burst laser with the repetition rate of 1 kHz and the energy of 2 J. Furthermore, improved collection optics with additional polychromators and a 32-channel fast digitizer are prepared to observe the fast time evolution of radial profiles. This improvement is essential to study fast phenomena such as internal reconnection event (IRE). We increase the TS signal and reduce the stray light by introducing new filters having better optical properties such as high optical density at 1064 nm, transmission, and reflectance. Moreover, the optimum reverse bias voltages are newly set to make the system operational independent of the background radiation. As a result, 1 kHz radial profiles of the core electron temperature and density are measured for the first time, showing characteristics of IREs in VEST.