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Agricultural Biotechnology in Canada: From Lab to Commercialization
Mclaughlin, Murray The Korean Society of Plant Biotechnology 1997 식물생명공학회지 Vol.24 No.4
Twenty six per cent of Canada's core biotech companies are Ag-biotechnology, compared with five per cent in the United States. Activities include the use of microorganisms, plant cells to create commercially viable products, and transformation of plants to improve specific qualities. Goals ate to increase the world's food supply, enable crops and animals to resist pests and diseases, increase the nutritional content of food, and improve production efficiency. I believe that there are business opportunities in the agriculture sector for Canada and other countries such as Korea to collaborate. These are research to research : institute to institute: business to business, and combinations of these areas. However, for these opportunities to become a reality we need to increase our awareness of each other's activities and needs. My presentation today was not designed with specifics, but to encourage some strategic thinking by both countries on how we can do business together in agriculture and biotechnology.
Multiattribute SCADA-Specific Intrusion Detection System for Power Networks
Yang, Y.,McLaughlin, K.,Sezer, S.,Littler, T.,Im, E. G.,Pranggono, B.,Wang, H. F. IEEE 2014 IEEE transactions on power delivery Vol.29 No.3
<P>The increased interconnectivity and complexity of supervisory control and data acquisition (SCADA) systems in power system networks has exposed the systems to a multitude of potential vulnerabilities. In this paper, we present a novel approach for a next-generation SCADA-specific intrusion detection system (IDS). The proposed system analyzes multiple attributes in order to provide a comprehensive solution that is able to mitigate varied cyber-attack threats. The multiattribute IDS comprises a heterogeneous white list and behavior-based concept in order to make SCADA cybersystems more secure. This paper also proposes a multilayer cyber-security framework based on IDS for protecting SCADA cybersecurity in smart grids without compromising the availability of normal data. In addition, this paper presents a SCADA-specific cybersecurity testbed to investigate simulated attacks, which has been used in this paper to validate the proposed approach.</P>
Secure Communications with Untrusted Secondary Nodes in Cognitive Radio Networks
Hyoungsuk Jeon,McLaughlin, Steven W.,Il-Min Kim,Jeongseok Ha IEEE 2014 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS Vol.13 No.4
<P>We consider a cooperation scenario between primary users and untrusted secondary users in cognitive radio networks. The secondary users are willing to help the primary users to relay the primary users' messages in reward for being allowed to share the primary users' spectrum bands. However, the primary users might be reluctant to accept this help, since the secondary users are untrustworthy and may try unauthorized decoding of the primary users' messages. This paper will answer the question: when is this cooperation mutually beneficial for primary and secondary users? Taking an approach of information-theoretic secrecy, such as coding techniques for wiretap channels, the primary users can allow the secondary users to sense and relay the message, while ensuring that the secondary users are ignorant of the primary users' messages. We characterize an achievable secrecy rate of primary users with a rate of the secondary users' communication. From the derived rate pairs, an optimization problem is formulated such that the secondary transmitter distributes its transmit power to maximize its data rate while providing a higher secrecy rate to the primary users. We demonstrate that this cooperation can provide a positive secrecy rate, even when a non-cooperative scheme achieves a zero secrecy rate.</P>
LDPC Codes for the Gaussian Wiretap Channel
Klinc, D.,Jeongseok Ha,McLaughlin, S. W.,Barros, J.,Byung-Jae Kwak IEEE 2011 IEEE transactions on information forensics and sec Vol.6 No.3
<P>This paper presents a coding scheme for the Gaussian wiretap channel based on low-density parity-check (LDPC) codes. The messages are transmitted over punctured bits to hide data from eavesdroppers. The proposed coding scheme is asymptotically effective in the sense that it yields a bit-error rate (BER) very close to 0.5 for an eavesdropper whose signal-to-noise ratio (SNR) is lower than the threshold SNR<I>E</I>, even if the eavesdropper has the ability to use a bitwise maximum a posteriori (MAP) decoder. Such codes also achieve high reliability for the friendly parties provided they have an SNR above a second threshold SNR<I>B</I> . It is shown how asymptotically optimized LDPC codes are designed with differential evolution where the goal is to achieve high reliability between friendly parties while keeping the security gap SNR<I>B</I>/SNR<I>E</I> as small as possible to protect against passive eavesdroppers. The proposed coding scheme is encodable in linear time, applicable at finite block lengths, and can be combined with existing cryptographic schemes to deliver improved data security by taking advantage of the stochastic nature of many communication channels.</P>
Ko, Hyun-Sook,McLaughlin, Patsy A. The Korean Society of Systematic Zoology 2008 Animal Systematics, Evolution and Diversity Vol.24 No.1
A pagurid crab carrying half of a bivalve shell was collected from Jejudo Island and identified as Porcellanopagurus nihonkaiensis. A diagnosis with illustrations of this specimen is presented. Although, Komai and Takeda (2006) reported this species as rare and known only from Japan, its range is now extended to Korean waters. At present, it is the only species of the genus Porcellanopagurus represented in Korean waters.
Boletus rubinellus 에서 감수분열 (減數分裂) 및 감수분열후 유사분열 (有絲分裂)
윤권상,David J . McLaughlin (Kwon S . Yoon) 한국식물학회 1987 Journal of Plant Biology Vol.30 No.4
Meiosis and postmeiotic mitosis in Boletus rubinellus were examined ultrastructurally. Meiosis occurred at the apex of the basidium. A sausage-shaped spindle pole body(SPB) was observed along with the presence of synaptonemal complexes during pachytene and a diglobular SPB was present on late pachytene or diplotene nuclei. During metaphase Ⅰ, the monoglobular SPB at the spindle pole was surrounded by a membrane and the nuclear envelope was discontinuous. At anaphase Ⅰ, the chromosomes became better defined and formed a central spindle. The nucleolus was extruded from the nucleus. During anaphase Ⅰ, the SPB was excluded from the chromosomal region by a membrane and both poles were fully separated to opposite sides of the basidial wall. In meiosis Ⅱ, the two nuclei divided synchronously and the spindles were parallel. The spindles were smaller than in meiosis Ⅰ, while the SPB was approximately the same size as that of the similar stage in meiosis Ⅰ. During anaphasetelophase Ⅱ, the SPB was surrounded by a cap of endoplasmic reticulum(ER) that delimited it from the spindle. The postmeiotic interphase nuclei migrated to the mid-region of the basidium before migration to the spores. The SPB at this stage was diglobular. A postmeiotic mitosis occurred within the basidiospore, and the plane of the spindle was oblique to the long axis of the spore. The spindle and SPB were smaller than at meiosis Ⅰ and there were fewer nonchromosomal microtubules. At anaphase, the nucleolus was present inside the nuclear envelope but lateral to the spindle.