• Journal of The Korean Society of Grassland and Forage Science
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• v.36 no.1
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• pp.19-22
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• 2016

'Lucky one' is a new orchardgrass (Dactylis glomerata L.) variety developed by the National Institute of Animal Science (NIAS) in 2014. Four superior clones were selected and polycrossed for seed production to develope this new variety of orchardgrass. The agronomic growth characteristics and forage productivity of 'Lucky one' were examined at Cheonan from 2010 to 2011. Regional adaption trials were conducted in Cheonan, Hoengseong, Jinju, and Jeju from 2012 to 2014. 'Lucky one' showed growth habit of medium type in fall and spring. It has short flag leaf length with long upper internode. Plant height of 'Lucky one' was 3 cm more than that of control variety, 'Amba'. Its heading date was 2 days later than that of control variety 'Amba'. Characteristics such as waterlogging and disease resistance of 'Lucky one' were stronger or better than those of control variety, 'Amba', Especially, dry matter yield of 'Lucky one' (16,191 kg/ha) was increased 38% compared to that of control variety, 'Amba'(11,778 kg/ha). Nutritive feed values of 'Lucky one' appeared to be similar to those of control variety 'Amba' except in Vitro dry matter digestibility (IVDMD) and crude protein content.

• Journal of The Korean Society of Grassland and Forage Science
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• v.36 no.1
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• pp.15-18
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• 2016

'Onnuri 2ho' is a new orchardgrass (Dactylis glomerata L.) variety developed by the National Institute of Animal Science (NIAS) in 2014. Four superior clones were selected and polycrossed for seed production to develop this new variety of orchardgrass. The agronomic growth characteristics and forage productivity of 'Onnuri 2ho' were examined at Cheonan from 2010 to 2011. Regional adaptation trials were conducted in Cheonan, Hoengseong, Jinju and Jeju from 2012 to 2014. 'Onnuri 2ho' showed growth habit of medium type in fall and spring. It is long in length of flag leaf with medium upper internode. Plant height of 'Onnuri 2ho' was 4 cm more than that of control variety, 'Amba'. Its heading date was 4 days later than compared to control variety, 'Amba'. Characteristics such as waterlogging and disease resistance of 'Onnuri 2ho' were stronger or better than those of control variety, 'Amba', Especially, the dry matter yield of 'Onnuri 2ho' (15,814 kg/ha) was increased 34 % compared to that of control variety, Amba (11,778 kg/ha). Nutritive feed values of 'Onnuri 2ho' appeared to be similar to that of control variety 'Amba' except in Vitro dry matter digestibility (IVDMD).

• ETRI Journal
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• v.27 no.5
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• pp.497-503
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• 2005

In this paper, we present a performance analysis for an MPEG-4 video codec based on the on-chip network communication architecture. The existing on-chip buses of system-on-a-chip (SoC) have some limitation on data traffic bandwidth since a large number of silicon IPs share the bus. An on-chip network is introduced to solve the problem of on-chip buses, in which the concept of a computer network is applied to the communication architecture of SoC. We compared the performance of the MPEG-4 video codec based on the on-chip network and Advanced Micro-controller Bus Architecture (AMBA) on-chip bus. Experimental results show that the performance of the MPEG-4 video codec based on the on-chip network is improved over 50% compared to the design based on a multi-layer AMBA bus.

• JSTS:Journal of Semiconductor Technology and Science
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• v.14 no.3
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• pp.345-355
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• 2014

Today's System-on-a-Chip (SoC) is designed with reusable IP cores to meet short time-to-market requirements. However, the increasing cost of testing becomes a big burden in manufacturing a highly integrated SoC. In this paper, an efficient parallel scan test technique is introduced to minimize the test application time. Multiple scan enable signals are adopted to implement scan architecture to achieve optimal test application time for the test patterns scheduled for concurrent scan test. Experimental results show that testing times are considerably reduced with little area overhead.

• JSTS:Journal of Semiconductor Technology and Science
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• v.9 no.2
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• pp.75-79
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• 2009

A system-on-a-chip communication architecture has a significant impact on the performance and power consumption of modern multi-processors system-on-chips (MPSoCs). However, customization of such architecture for a specific application requires the exploration of a large design space. Thus, system designers need tools to rapidly explore and evaluate communication architectures. In this paper we present the method for application-specific low-power bus architecture synthesis at system-level. Our paper has two contributions. First, we build a bus power model of AMBA AXI bus communication architecture. Second, we incorporate this power model into a low-power architecture exploration algorithm that enables system designers to rapidly explore the target bus architecture. The proposed exploration algorithm reduces power consumption by 20.1% compared to a maximally connected reduced matrix, and the area is also reduced by 20.2% compared to the maximally connected reduced matrix.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.903-906
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• 2009

In this contribution, we designed a serial port interface (SPI) suitable for embedded systems, especially for Bluetooth baseband. Proposed architecture is compatible for the APB bus in AMBA bus architecture. The 8-bit design of the SPI module is in charge of transferring the data and the instructions between the external devices and the coprocessors. We adopted the cyclic redundancy check method for the error correction. Also, we provided the interface for multimedia cards. The designed SPI module was automatically synthesized, placed, and routed. Implementation was performed through the Altera FPGA and well operated at 25MHz clock frequency.

• Journal of The Korean Society of Grassland and Forage Science
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• v.26 no.4
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• pp.187-192
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• 2006

In order to investigate the effects of genetic variations of orchardgrass in tissue culture response, calli were induced from mature seeds of eight varieties, 'Hapsung 2', '93E', 'Amba', 'Ambassdor', 'Frode', 'Frontier', 'Potomac' and 'Roughrider', and plant regeneration frequency was compared. Significant differences were observed among the varieties in both callus induction and plant regeneration. Callus induction rate of viable seeds varied from 24.3% to 71.7%. Plant regeneration frequency ranged from 76.6% to 29.7%. 'Roughrider' varieties showed higher regenerability with the frequency of 76.6%. These results can be used not only to provide additional improvements in the plant regeneration frequency from transgenic callus, but also useful for molecular breeding of orchardgrass through genetic transformation.

• Journal of Satellite, Information and Communications
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• v.11 no.3
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• pp.65-71
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• 2016

Currently developing the OBC of the next-generation LEO satellite by Korea Aerospace Research Institute adopts the LEON2-FT/AT697F processor to achieve high performance. And various communication devices such as SpaceWire, MIL-STD-1553B, DMAUART and CAN Master are integrated to the separated standard communication FPGAs within the OBC, where they can be controlled by the processor and flight software (FSW) through PCI interface. The Actel 1553BRM IP core is used for the 1553B in the next-generation LEO OBC and the B1553BRM wrapper from Aeroflex Gaisler is used for connecting it to the AMBA bus in FPGA. This paper presents the design and development of PCI-based 1553B communication software, and describes the handling mechanism of 1553B operation in FSW task level. Also it shows the test results on real-hardware and simulator.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.6
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• pp.99-104
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• 2013

Recently smart devices which combine traditional electronic devices and personal computers, such as smart phones and smart TV, have caught people's eyes from all over the world. A multi-media SoC platform which embeds not only a calculating processor but also an operating system could provide an user-customized environment of several types of communication methods to PC or Internet. In this paper, we describe a multi-functioning SoC platform with video, audio and other communicating protocols based on Core-A processor and AMBA buses. To verify the designed multi-media SoC platform, JPEG decoding and ADPCM encoding/decoding algorithms are applied on it and the final decoding results are confirmed by video monitors and audio speakers.

• Journal of The Korean Society of Grassland and Forage Science
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• v.33 no.1
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• pp.6-9
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• 2013

"Onnuri" is a new orchardgrass (Dactylis glomerata L.) cultivar developed by the National Institute of Animal Science (NIAS) in 2011. To develop the new variety of orchardgrass, 5 superior clones were selected and polycrossed for seed production. The agronomic growth characteristics and forage productivity of "Onnuri" were examined at Cheonan from 2009 to 2011, and regional trials were conducted in Cheonan, Pyeongchang, Jinju and Jeju from 2009 to 2011, respectively. "Onnuri" showed medium type growth habit in fall and spring, and medium in length of flag leaf and long upper internode. Plant height of "Onnuri" was 5cm more than that of the standard cultivar, "Amba" and the heading date was 5 days earlier than that of Amba (16th May). Characteristics, such as waterlogging and disease resistance, of "Onnuri" were stronger or better than those of Amba, Especially, dry matter yield of "Onnuri" (14,775 kg/ha) increased by 18% compared to that of Amba (12,523 kg/ha). Nutritive values appeared to be similar in both varieties.