• Title/Summary/Keyword: Resource Exchange

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A Study on the Protocol of SSB Wireless Data for Advancing of Fishery Communication (어업통신의 선진화를 위한 SSB 무선데이타 프로토콜에 대한 연구)

  • Kim, Jeong-Nyun;Jo, Hag-Hyun
    • Journal of Navigation and Port Research
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    • v.28 no.5
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    • pp.443-448
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    • 2004
  • The Ministry of Maritime Affairs & Fisheries have plaining the advancing fishery information integrated system for the fishing present condition, marine resource administration and applicability considering. The fishery info17nation communication system is build up to the raw data & process-network-content. The communication system must be small size, low cost and adapted SSB transceiver, that is using fishery shipping. In this paper We present digital data communication network to exchange information for fishery and safety between fishing ship and coast station in cheeper communication fee using SSB in HF band.

Comparison of Genetic Diversity among Amaranth Accessions from South and Southeast Asia using SSR Markers (SSR 마커를 이용한 남아시아와 동남아시아 아마란스 자원의 유전적 다양성 비교)

  • Wang, Xiao Qiang;Park, Yong Jin
    • Korean Journal of Medicinal Crop Science
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    • v.21 no.3
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    • pp.220-228
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    • 2013
  • This study was conducted to assess the genetic diversity and population structure of 70 amaranth accessions collected from South and Southeast Asia using 14 simple sequence repeat (SSR) markers. In total, 67 alleles were detected, with an average of 4.79 per locus. Rare alleles comprised a large portion (46.3%) of the detected alleles, and 29 unique alleles associated with rice accessions were also discovered. The mean major allele frequency (MAF), genetic diversity (GD) and polymorphic information content (PIC) of the 14 SSR loci were 0.77, 0.36, and 0.34, respectively. A model-based structural analysis revealed the presence of three subpopulations. The genetic relationships revealed by the neighbor-joining tree method were fairly consistent with the structure-based membership assignments for most of the accessions. All 70 accessions showed a clear relationship to each cluster without any admixtures. We observed a relatively low extent of genetic exchange within or among amaranth species from South and Southeast Asia. The genetic diversity results could be used to identify amaranth germplasms and so facilitate their use for crop improvement.

An Anti-Interference Cooperative Spectrum Sharing Strategy with Joint Optimization of Time and Bandwidth

  • Lu, Weidang;Wang, Jing;Ge, Weidong;Li, Feng;Hua, Jingyu;Meng, Limin
    • Journal of Communications and Networks
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    • v.16 no.2
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    • pp.140-145
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    • 2014
  • In this paper, we propose an anti-interference cooperative spectrum sharing strategy for cognitive system, in which a secondary system can operate on the same spectrum of a primary system. Specifically, the primary system leases a fraction of its transmission time to the secondary system in exchange for cooperation to achieve the target rate. To gain access to the spectrum of the primary system, the secondary system needs to allocate a fraction of bandwidth to help forward the primary signal. As a reward, the secondary system can use the remaining bandwidth to transmit its own signal. The secondary system uses different bandwidth to transmit the primary and its own signal. Thus, there will be no interference felt at primary and secondary systems. We study the joint optimization of time and bandwidth allocation such that the transmission rate of the secondary system is maximized, while guaranteeing the primary system, as a higher priority, to achieve its target transmission rate. Numerical results show that the secondary system can gain significant improvement with the proposed strategy.

A New Raw-Starch-Digesting ${\alpha}$-Amylase: Production Under Solid-State Fermentation on Crude Millet and Biochemical Characterization

  • Maktouf, Sameh;Kamoun, Amel;Moulis, Claire;Remaud-Simeon, Magali;Ghribi, Dhouha;Chaabouni, Semia Ellouz
    • Journal of Microbiology and Biotechnology
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    • v.23 no.4
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    • pp.489-498
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    • 2013
  • A new Bacillus strain degrading starch, named Bacillus sp. UEB-S, was isolated from a southern Tunisian area. Amylase production using solid-state fermentation on millet, an inexpensive and available agro-resource, was investigated. Response surface methodology was applied to establish the relationship between enzyme production and four variables: inoculum size, moisture-to-millet ratio, temperature, and fermentation duration. The maximum enzyme activity recovered was 680 U/g of dry substrate when using $1.38{\times}10^9$ CFU/g as inoculation level, 5.6:1 (ml/g) as moisture ratio (86%), for 4 days of cultivation at $37^{\circ}C$, which was in perfect agreement with the predicted model value. Amylase was purified by Q-Sepharose anion-exchange and Sephacryl S-200 gel filtration chromatography with a 14-fold increase in specific activity. Its molecular mass was estimated at 130 kDa. The enzyme showed maximal activity at pH 5 and $70^{\circ}C$, and efficiently hydrolyzed starch to yield glucose and maltose as end products. The enzyme proved its efficiency for digesting raw cereal below gelatinization temperature and, hence, its potentiality to be used in industrial processes.

Wages and Salaries as a Part of the Labor Market

  • HAFUROVA, O.V.;MELIANKOVA, L.V.;MAKODA, S.L.
    • Journal of Wellbeing Management and Applied Psychology
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    • v.2 no.1
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    • pp.9-19
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    • 2019
  • The uniqueness of labour as a factor of production is that labour services cannot be separated from the employee. However, since the object of sale is only the services of the employee, not an employee himself, the labour conditions, determined by the labour and collective agreements or other agreements concluded at other levels and within the current legislation, are equally important. Speaking as a subject of labour, a person can realize his or her labour potential by the way of self-employment, that means to act as an independent producer seller of their products. Another way of labour potential realization is hiring, that means offering of the services as a hired employee to the employer, who is the subject of ownership. In this case there is an exchange under the principle: qualification and working time of the worker - for wages and profits. Each enterprise is confronted with a set of goals, among them - economic and social leadership. For their achievement the company uses all the available arsenal of resources - material, land, financial, labour. This indicates the equivalence of all types of resources in achieving the goal. But this is not quite true, because every resource can be included in production only through the activity of labour and people. And this activity depends on the attitude of the company to its employees, the degree of their motivation and stimulation.

Expression, Purification, and Crystallization of D-Psicose 3-Epimerase from Agrobacterium tumefaciens

  • Kim Kwang-Soo;Kim Hye-Jung;Oh Deok-Kun;Cheong Jong-Joo;Rhee Sang-Kee
    • Journal of Microbiology and Biotechnology
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    • v.16 no.4
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    • pp.647-650
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    • 2006
  • D-Psicose 3-epimerase (DPE) catalyzes the interconversion of D-fructose to D-psicose by epimerizing the carbon-3 position. The DPE from Agrobacterium tumefaciens was cloned and expressed in Escherichia coli. The expressed enzyme was purified by affinity chromatography on an IMAC, gel filtration chromatography on a Sephacryl S-300 HR, and anion-exchange chromatography on a RESOURCE Q. The molecular mass of the purified enzyme was estimated to be about 135 kDa by Superdex 200 gel filtration chromatography, corresponding to a homotetramer. The enzyme produced crystals suitable for X-ray diffraction to a $2.0{\AA}$ resolution at 100 K. The crystals were found to belong to the orthorhombic space group $P2_12_12_1$, with unit-cell parameters a=102.4, b=113.0, and $c=131.8{\AA}$. In addition, the calculated packing parameter $(V_m)$ was $2.79{\AA}^3/Da$, the solvent content was 55.92%, and an asymmetric unit consisted of four monomers.

A Policy Study on Subject-oriented Specialization of University Libraries to Facilitate Sharing of National Academic Information Resources (국가적 학술정보공동활용의 활성화를 위한 대학도서관의 주제별 특성화 정책에 관한 연구)

  • Noh, Young-Hee
    • Journal of the Korean Society for Library and Information Science
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    • v.40 no.4
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    • pp.111-139
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    • 2006
  • Joint collection and sharing of specialized academic resources among academic libraries will not only promote academic research at universities in general but also further diversification and concentration process of academic libraries. For that both the government and universities should make concerted policy efforts to fortify individual characteristics of each academic library. This study proposes two concrete plans to build a national information management system comprising the specialized resources of academic libraries. One is to utilize the existing cooperative network of Korea Education & Research Information Service(KERIS) as a national hub for information exchange, and the other is to activate various regional or subject-based committees to encourage subject-oriented specialization of university libraries.

A Study on the Implementation of System for Wireless Data Communication Using SSB (SSB 해상무선데이터 통신시스템 구현에 관한 연구)

  • 김정년;노창균;조학현
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2003.05a
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    • pp.75-80
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    • 2003
  • The Ministry of Maritime Affairs & Fisheries have plaining the advancing fishery information integrated system for the fishing present condition, marine resource administration and applicability considering. The fishery information communication system is build up to the raw date & process-network-content. The communication system must be small size, low cost and adapted SSB transceiver, that is using fishery shipping. In this paper We present digital data communication network to exchange information for fishery and safety between fishing ship and coast station in cheeper communication free using SSB(Single Side Band) in HF(High Frequency) band.

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Packet Replacement Technique for Securing Anonymity in P2P Network (P2P 네트워크에서 익명성 보장을 위한 패킷 대치 기법)

  • Kim Byung Ryong;Kim Ki Chang
    • The KIPS Transactions:PartC
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    • v.12C no.3 s.99
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    • pp.331-338
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    • 2005
  • Flooding based P2P system basically provides anonymity and under the anonymity circumstances user and provider exchange information. Most of packets transferred from node to node do not contain identity information on node that sent packet. And these packets are transmitted to the destination through the routing systems dynamically composed of intermediate nodes. Therefore it is impossible to know who transmitted it for the first and who the designated recipient is. But since downloading and uploading host's IP address is exposed it does not provide anonymity. This study introduces techniques to provide anonymity for protecting identification of users and resource Providers by replacing QueryHit Packets in systems where anonymity can cause trouble.

Current Status of Fishery Resources in Kenya

  • Ibuuri, Peter Kimathi
    • Journal of Marine Bioscience and Biotechnology
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    • v.3 no.1
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    • pp.24-30
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    • 2008
  • Fishing in Kenya, until the discovery of Nile perch as an export commodity in the early 1990s, has basically a subsistence occupation for the lake and coastal communities. The government also did not recognize the importance of fisheries as a contributor to the macro-economy and therefore, did not pay much attention in terms of resource allocation for the development of the sector. Most fishing in Kenya is artisanal, with a little industrial fishing by prawn trawlers. The deep sea (EEZ) fishery resources are currently exploited by DWFNs through a licensing system. Only a small quantity of catch from the EEZ is landed in Kenya, primarily tuna loins for processing for export. Currently capture fisheries, mainly from Lake Victoria, earn local fishers over Kenya shillings (K Sh) 7 billion, while exports earn the country K Sh 5 billion (US$ 50 million) in foreign exchange annually. The government has been putting in place an enabling environment to promote investment activities in order to achieve economic recovery as well as for the development and sustainable use of fisheries resources in the country within the specified period. The Department's major roles are to ensure sustainable exploitation of fisheries resources; to promote aquaculture development; to assure quality and safety of fish and fishery products; and to facilitate fish marketing in order to maximize the benefits that can be derived from fisheries. The contribution of fisheries to local incomes, subsistence and food nutrition is significant, as this occurs in areas with the highest incidences of poverty in the country.

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