Sung Ho Kang

Abstract Metamaterial perfect absorbers (MPAs) are artificial materials composed of an array of subwavelength structures that manipulate electromagnetic waves to achieve extraordinary light absorption properties. Driven by the advent of the Internet of Things, MPAs are employed in microelectromechanical systems for the development of efficient and miniaturized IR detectors, imagers, and spectrometers, thanks to their lithographically tunable peak absorption, spectral selectivity, and ultrathin t

Given a set of interconnected elements, linear ordering generates a linear sequence of elements of the set, which is the basis for most constructive initial-placement methods. This paper presents a new strategy for linear ordering. The important difference of the new technique from the previous ones is that it starts the ordering process from the most lightly connected seed. It was applied to various placement problems including standard cell and gate array and produced very good results.

마케팅 활동에 대한 투자가 증가하면서 마케팅 활동과 기업 성과에 대한 실체적 관계를 정립하고자 하는 관심이 증대되어 왔다. 특히나 마케팅 사고의 대표적인 개념으로서 시장지향성과 기업 성과는 많은 학자들에 의해서 연구되어 왔다. 많은 연구들에서 시장지향성이 고객들에게 제공할 우월한 가치를 창출하고 유지하는데 최우선 순위를 두고 시장 정보를 창출하고 조직내에 확산시켜 반응하게 하는 기업 문화이기 때문에 이러한 시장지향성은 지속가능한 경쟁우위를 창출해내고 장기적으로 기업의 성과를 향상시킬 것이라고 하였다. 하지만 일부 연구에서는 유의하지 못한 결과나 반대의 결과가 도출되었던 것도 사실이다. 이러한 불일치하는 연구의 결과를 설명하고자 하는 노력으로 시장지향성과 기업의 성과간의 여러 가지 매개변수를 이용한 연구들이 진행되어 왔다. 대표적인 것이 바로 기업의 혁신성과 전략유형의 매개적 역할을 밝히는 것이었다. 하지만 실제로 시장지향성이 기업의 성과로 이어지기 위해서는 실제 기업의 운용 프로세스

Given a set of interconnected elements, linear ordering generates a linear sequence of elements of the set, which is the basis for most constructive initial-placement methods. This paper presents a new strategy for linear ordering. The important difference of the new technique from the previous ones is that it starts the ordering process from the most lightly connected seed. It was applied to various placement problems including standard cell and gate array and produced very good results.

The way in which we interact with our cars is changing, driven by the increased use of mobile devices, cloud-based services, and advanced automotive technology. In particular, the requirements and market demand for the Internet of Things (IoT) device-connected vehicles will continuously increase. In addition, the advances in cloud computing and IoT have provided a promising opportunity for developing vehicular software and services in the automotive domain. In this paper, we introduce the concep

This paper reports on the experimental demonstration of wide-angle and polarization insensitive ultranarrow band mid-infrared (MIR) plasmonic absorbers for multispectral sensing and imaging applications. By optimizing geometry and fabrication process of an ultrathin (400 nm) metal-insulator-metal (MIM) metamaterial structure, we have been able to experimentally demonstrate high absorptivity (η>91%) mid-IR absorbers with the narrowest absorption bandwidth reported to date (full width at half maxi

When using simulation for design verification, only a subset of possible simulation patterns is used, since exhaustive simulation is usually not practical. When this subset is used, the designer wants to know how efficiently the design has been verified. The authors provide a measure of simulation pattern effectiveness, based on the concepts of design error modeling. This measure gives insight into the actual level of design validation that has been achieved. These concepts provide a basis for d

Testing memory and repairing faults have become increasingly important for improving yield. Redundancy analysis (RA) algorithms have been developed to repair memory faults. However, many RA algorithms have low analysis speeds and occupy memory space within automatic test equipment. A fast RA algorithm using simple calculations is proposed in this letter to minimize both the test and repair time. This analysis uses the grouped addresses in the faulty bitmap. Since the fault groups are independent

The simulation automation system (SAS) was developed to provide an efficient simulation environment, by automating the entire simulation process. This system can be classified, by its salient unique features, into: automatic model generator (AMG), automatic simulator developer (ASD), and design error simulation and test system (DEST). The system can automatically generate multivalued simulation models and automatically develop various simulators, using domain specific automatic programming techn

Various convolutional approaches to computing the 1D and 2D discrete cosine transform (DCT) are presented. In the 1D case the method of W. Li (see IEEE Trans. Signal Process., vol.39, no.6, p.1305-13, 1991) is introduced, and a more regular structure than that of the Li method is described. Since both methods are complicated to implement with systolic arrays, a proper array structure is proposed. This structure speeds up the multiplication by processing with real numbers instead of complex numbe

To use simulation for design verification, designers need a confidence measure for a given set of simulation patterns, specifically for cases in which only a subset of the possible patterns is used. The authors derive a measure of design verification coverage based on the number of design errors detected in a theoretical analysis of a circuit. To verify the theoretical analysis, they simulate errors and compare the results.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http:/

This paper reports on an ultra-miniaturized multispectral infrared (IR) chemical sensor based on an array of plasmonically-enhanced MEMS resonant IR detectors and a single multiplexed CMOS IC readout. The unique combination of such a piezoelectric-plasmonic MEMS sensing technology with a low-power CMOS read-out circuitry results in a frequency-domain IR spectrometer microsystem characterized by an ultra-miniaturized footprint (total chip area of ≈ 1.53mm <sup xmlns:mml="http://www.w3.org/1998/Ma

As the traditional IC design migrates to three-dimensional integrated circuits (3D-ICs) design, new challenges need to be considered carefully to solve its reliability and yield issues. 3D-ICs using through-silicon-vias (TSVs) can have latent defects such as resistive open and bridge defects, which are caused by the thermal stress during the fabrication process. These latent defects lead to the deterioration of the electrical performance of TSVs caused by an undesired increase in the resistance-

Energy efficiency enhancement has become an increasingly important issue for battery electric vehicles. Even if it can be improved in many ways, the driver's driving pattern strongly influences the battery energy consumption of a vehicle. In this paper, eco assist techniques to simply implement an energy-efficient driving assistant system are introduced, including eco guide, eco control and eco monitoring methods. The eco guide is provided to control the vehicle speed and accelerator pedal strok