• East Asian mathematical journal
• /
• v.28 no.2
• /
• pp.159-172
• /
• 2012

In all Mathematics I Textbooks(Kim, S. H., 2010; Kim, H. K., 2010; Yang, S. K., 2010; Woo, M. H., 2010; Woo, J. H., 2010; You, H. C., 2010; Youn, J. H., 2010; Lee, K. S., 2010; Lee, D. W., 2010; Lee, M. K., 2010; Lee, J. Y., 2010; Jung, S. K., 2010; Choi, Y. J., 2010; Huang, S. K., 2010; Huang, S. W., 2010) in high schools in Korea these days, it is written and taught that for a positive real number $a$, $a^{\frac{m}{n}}$ is defined as $a^{\frac{m}{n}}={^n}\sqrt{a^m}$, where $m{\in}\mathbb{Z}$ and $n{\in}\mathbb{N}$ have common prime factors. For that situation, the author shows his opinion that the definition is not well-defined and $a^{\frac{m}{n}}$ must be defined as $a^{\frac{m}{n}}=({^n}\sqrt{a})^m$, whenever $^n\sqrt{a}$ is defined, based on the field axiom of the real number system including rational number system and natural number system. And he shows that the following laws of exponents for reals: $$\{a^{r+s}=a^r{\cdot}a^s\\(a^r)^s=a^{rs}\\(ab)^r=a^rb^r$$ for $a$, $b$>0 and $s{\in}\mathbb{R}$ hold by the completeness axiom of the real number system and the laws of exponents for natural numbers, integers, rational numbers and real numbers are logically equivalent.

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.31 no.4
• /
• pp.371-382
• /
• 2011

The aim of the present study was to investigate the relationship between climates, growth characteristic and yield of silage corn at Hanwoo Experiment Station, National Institute of Animal Science, Daegwallyeong in Gangwon Province located at altitude of 760 m, from 2009 to 2010. The mean minimum temperature was $12.29^{\circ}C$ from seeding to harvest in 2009, $14.30^{\circ}C$ in 2010, the mean maximum temperature was $21.66^{\circ}C$, $23.48^{\circ}C$, respectively. The mean temperature was $16.85^{\circ}C$ in 2009 and $18.55^{\circ}C$ in 2010, respectively. Duration of sunshine was 711.3 hours in 2009 and 663.8 hours in 2010, and precipitation was 893.8 mm in 2009 and 752.1 mm in 2010, respectively. In 2009, for all Kwangpyeongok, Gangdaok, Cheonganok, Cheongsaok, Pyeonganok, the early growth was good with 1.2, while in 2010 the growth for Pyeonganok was good with 1.3 comparing to others, which showed worse growth than in the previous year with 2.4~3.0. There was significant difference in the ear height between 2009 and 2010, showing mean value of 85.8 cm and 105 cm for all the species in 2009 and in 2010, respectively (p<0.001). In 2010, stem diameter for all the species were larger, and there was significant difference in mean value of the diameter between 2009 and 2010 (p<0.001). There was significant difference in the plant height and ear height between 2009 and 2010, showing 200 cm and 258 cm in 2009 and 2010, respectively (p<0.001). There was significant difference in the average days to silk, showing 103.8 days in 2009, 90 days in 2010, respectively (p<0.001). There was no lodging or disease-insect damage in all hybrid silage corn in both 2009 and 2010. The mean ear rates were 23.4% in 2009, but almost doubled, 52.1%, in 2010. There was significant difference in fresh yield between the two years, showing 54,611 kg/ha in 2009 and 78,733 kg/ha in 2010, respectively (p<0.001). Dry matter yields were higher in 2010 than in 2009. TDN yields of Gangdaok and Cheonganok were higher in 2009, whereas that of Cheongsaok and Pyeonganok were higher in 2010. Crude protein contents were higher in 2010 than in 2009 for all the species.

• 월간낙농육우
• /
• v.30 no.12
• /
• pp.118-122
• /
• 2010

• THE INTERNATIONAL COMMERCE & LAW REVIEW
• /
• v.49
• /
• pp.3-41
• /
• 2011

In this article, the author have studied on main revisions and some recommendations of the Incoterms(R) 2010. Main revisions are as belows. 1. Two new Incoterms rules -DAT and DAP- have replaced the Incoterms 2000 rules DAF, DES, DEQ and DDU. 2. New classification of the Incoterms(R) 2010 are adopted. First class is Rules for any mode or modes of transport(EXW, FCA, CPT, CIP, DAT, DAP and DDP belong to this class.) and second class is rules for sea and inland waterway transport(FAS, FOB, CFR and CIF belong to this class.). 3. Incoterms(R) 2010 rules formally recognizes that they are available for application to both international and domestic sale contracts. 4. The Guidance Notes and Introduction are not part of the actual Incoterms(R) 2010 rules. 5. Under the FOB, CFR and CIF, all mention of the ship's rail as the point of delivery has been omitted in preference for the goods being delivered when they are "on board" the vessel. 6. Incoterms(R) 2010 rules include the obligation to 'procure goods shipped' as an alternative to the obligation to ship goods in the relevant Incoterms rules. 7. Incoterms(R) 2010 rules give electronic means of communication the same effect as paper communication. 8. Incoterms(R) 2010 rules have allocated obligations between the buyer and seller to obtain or to render assistance in obtaining security-related clearances. such as chain-of custody information. Some recommendations are as belows. 1. The parties must incorporate the Incoterms(R) 2010 rules into their contract of sale. 2. The parties must choose the appropriate Incoterms(R) 2010 rules. 3. Specify the place or port as precisely as possible in their contract of sale. 4. Remember that Incoterms(R) 2010 rules do not give the parties a complete contract of sale. 5. Incoterms(R) 2010 rules do not prohibit alteration of Incoterms rule, but there are dangers in so doings. In order to avoid any unwelcome surprises, the parties would need to make the intended effect of such alterations extremely clear in their contract.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
• /
• v.45
• /
• pp.33-50
• /
• 2010

The Incoterms, short for "International Commercial Terms," have been widely used as International Rules for the Interpretation of Trade Terms since 1936. The Incoterms have been revised six times in order to adapt them to contemporary commercial practice. The current version is Incoterms 2000. The revised version of Incoterms 2000 will be published in the fourth quarter of 2010 and will be effective from January 1st 2010. The first and second draft of Incoterms 2010 have been carried out by a small global Drafting Group, representing seven nationalities and various areas of substantive expertise. In this paper, I reviewed the main contents in the 2nd Draft of Incoterms 2010. This paper contributes to help the parties concerned to understand the new changes from Incoterms 2000 and to choose the appropriate trade term.

• The Bulletin of The Korean Astronomical Society
• /
• v.36 no.1
• /
• pp.41.2-41.2
• /
• 2011

P/2010 A2, a main-belt asteroid having comet-like dust trail was discovered in January 2010, but the origin of the trail is controversial. Moreno et al. (2010) reported water-ice sublimation as a mechanism for the comet-like activity, whereas other researches (Jewitt et al. 2010; Snodgrass et al. 2010) stated that impact collision contributed to the dust trail. For asteroids are categorized based on spectral shape, optical observation using different color filters makes it possible to determine the taxonomic type of P/2010 A2 nucleus, thus gives an answer to the question of activation mechanism of the object. In this presentation, we report multiband observation of P/2010 A2 in January and March 2010 with 1-meter telescope of Ishigaki-Jima Astronomical Observatory. We employed three broadband filters of g', Rc, and Ic. In this presentation, we focus on the data acquisition, the reduction and the derivation of the reflectance spectrum of debris in the trail. Finally we discuss the potential cause of dust ejection from this asteroid.

• Vending industry
• /
• v.10 no.1
• /
• pp.28-36
• /
• 2010

희망찬 2010년의 시작과 더불어 과연 올 한해 자판기 산업이 어떤 흐름을 형성할지 큰 관심사가 아닐 수 없다. 더욱이 지난해 자판기 시장은 최악의 시장 부진을 기록했던 한해였던 만큼 올해 시장에 대한 기대가 남다르다. 산업의 재도약을 위한 새로운 변화가 절실히 요구되는 2010년. 과연 올 한해 자판기 시장의 새로운 프름을 주도할 트렌드들은 무엇일까? 2010년 주목해야할 자판기 시장 10대 트렌드를 소개한다.

• International Commerce and Information Review
• /
• v.14 no.3
• /
• pp.481-511
• /
• 2012

Incoterms 2010 Rules consist of 11 rules. The 11 rules are presented in "rules for any mode or modes of transport" and "rules for sea and inland waterway transport". The each rule of Incoterms 2010 rules has the guidance note, 10 articles(A1~A10) in relation to the seller's obligations and 10 articles(B1~B10) in relation to the buyer's obligations. The A6 and B6 of Incoterms 2010 rules, likewise previous Incoterms rules, have the article of allocations of costs. These articles of Incoterms 2010 rules provide the allocation of costs between the seller and the buyer. According to These A6 and B6, in principle, the seller must pay all costs relating to the goods until they have been delivered in accordance with A4, and the buyer must pay all costs relating to the goods from the time they have been delivered as envisaged in A4. The purpose of this paper is, therefore, to analyze the clauses of allocation of costs in Incoterms 2010 and to provide the problems of the clauses.

• The Optical Journal
• /
• s.127
• /
• pp.49-56
• /
• 2010

사진영상기술과 전문사진작품을 동시에 만날 수 있는 아시아 최대의 사진페스티발이 열린다. 올해로 19회째를 맞이하는 '2010 서울국제사진영상기자재전'이 4월29일부터 5월2일까지 나흘간의 일정으로 코엑스 본관 1층 대평양홀에서 성대하게 개최된다. 이번 전시회는 국내외 참관객들이 국내 사진영상산업의 세계적인 위상을 확인하는 한편 주요 국가별 주요업체의 신기술, 신제품이 총출동함으로써 사진영상기술의 세계 동향 및 흐름을 한 눈에 확인할 수 있는 기회가 될 것으로 기대된다. 본 고에서는 전시회 개막을 앞두고 P&I 2010의 특징, 주요 프로그램 및 부대행사 일정 등을 살펴본다.

• The Optical Journal
• /
• s.128
• /
• pp.34-35
• /
• 2010

오는 9월 21일부터 26일까지 독일 쾰른 국제박람회장에서 열리는 ‘2010 독일 쾰른 국제 사진 및 영상기자재전(Photokina 2010)'에 대한 설명회가 지난 4월 15일 서울 밀레니움 힐튼호텔 앰버룸에서 열렸다. 독일 쾰른 박람회사 부사장과 독일 광학기기협회 대표가 직접 방한하여 최근 사전 및 이미징 시장의 동향과 2010 포토키나에 대한 상세한 소재의 시간을 가져 전시 참가사 및 관심 있는 업체들에게 유익한 시간이 되었다.