• Journal of the Korea Society of Computer and Information
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• v.16 no.5
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• pp.153-162
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• 2011

The minimum cut problem is to minimize c(S,T), that is, to determine source S and sink T such that the capacity of the S-T cut is minimal. The flow-based algorithm is mostly used to find the bottleneck arcs by calculating flow network, and does not presents the minimum cut. This paper suggests an algorithm that simply includes the maximum capacity vertex to adjacent set S or T and finds the minimum cut without obtaining flow network in advance. On applying the suggested algorithm to 13 limited graphs, it can be finds the minimum cut value $_{\min}c$(S, T) with simply and correctly.

• Journal of Microbiology and Biotechnology
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• v.17 no.11
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• pp.1743-1750
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• 2007

Two Gram-negative, nonmotile, coccobacilli, SW-$3^T$ and SW-$100^T$, were isolated from sea water of the Yellow Sea in Korea. Strains SW-$3^T$ and SW-$100^T$ contained ubiquinone-9 (Q-9) as the predominant respiratory lipoquinone and $C_{18:1}\;{\omega}9c$ and $C_{16:0}$ as the major fatty acids. The DNA G+C contents of strains SW-$3^T$ and SW- $100^T$ were 44.1 mol% and 41.9 mol%, respectively. A neighbor-joining tree based on l6S rRNA gene sequences showed that the two isolates fell within the evolutionary radiation enclosed by the genus Acinetobacter. Strains SW-$3^T$ and SW-$100^T$ exhibited a l6S rRNA gene similarity value of 95.7% and a mean DNA-DNA relatedness level of 9.2%. Strain SW-$3^T$ exhibited l6S rRNA gene sequence similarity levels of 93.5-96.9% to the validly described Acinetobacter species and fifteen Acinetobacter genomic species. Strain SW-$100^T$ exhibited l6S rRNA gene sequence similarity levels of less than 97.0% to the other Acinetobacter species except Acinetobacter towneri DSM $14962^T$ (98.0% similarity). Strains SW-$3^T$ and SW-$100^T$ exhibited mean levels of DNA-DNA relatedness of 7.3-l6.7% to the type strains of some phylogenetically related Acinetobacter species. On the basis of phenotypic, phylogenetic, and genetic data, strains SW-$3^T$ and SW-$100^T$ were classified in the genus Acinetobacter as two distinct novel species, for which the names Acinetobacter marinus sp. novo (type strain SW-$3^T$=KCTC $12259^T$=DSM $16312^T$) and Acinetobacter seohaensis sp. novo (type strain SW-$100^T$=KCTC $12260^T$=DSM $16313^T$) are proposed, respectively.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.41 no.4
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• pp.379-384
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• 1992

The Fe-base amorphous ribbons with 15mm width and about 20x10S0-6Tm thickness, (FeS179-xTCrS1xT)BS116TSiS15T and (FeS181-xTMnS1xT) BS112TSiS17T (x:0-6), were prepared melt spinner. The thickness of the ribbons followed by PFC (Planar Flow Casting). The initial permeability and total core losses were measured as a function of additive elements (Cr, Mn) and annealing conditions in high frequency for the purpose of using these materials as a core of magnetic amplifier and switched mode power supplies. The initial permeabilities were enhanced and core losses were decreased by non-magnetic field annealing in proper conditions. The lowest core loss in 0.2T/10kHz was measured at 3% Cr addition amorphous ribbon, and the loss was 5.6W/kg. The permeability of the ribbon at 10kHz was about 9000.

• Proceedings of the KSAR Conference
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• 2001.10a
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• pp.57-57
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• 2001

This study was carried out to investigate the general characteristics such as volume, sperm concentration, sperm motility, sperm abnormality on whole semen, RSP-S and RSP-T semen and fractional semen of small size dogs, and the effect of temperature and preservation time and cryoproservation on motility of whole and RSP-S and RSP- T semen. Multiple ejaculates were collected from small dogs by the digital manipulation of penis. 1. The volume per ejaculate semen, sperm of concentration and motility and abnormal sperm rate of 1st fractional semen were 0.65±0.09㎖, 4.52±0.35×10/sup 6/ cells/㎖, 15.64±3.85% and 5.50±0.62%. Also, 2nd fractional semen were 1.25±0.20㎖, 3.35±0.48×10/sup 6/cells/㎖, 96.25±4.65% and 4.24±0.46%. And 3rd fractional semen were 1.45±0.21㎖, 3.85±0.52×10/sup 6/cell/㎖, 92.82±4.24% and 4.66±0.58%, respectively. 2. The sperm of concentration and motility and abnormal sperm rates of whole, RSP-S and RSP-T semen were 5.45±0.82×10/sup 6/ cells/㎖, 95.55±4.65%, 4.58±0.45% and 4.82±0.36×10/sup 6/cells/㎖, 90.10±3.42%, 6.48±0.68% and 4.55±0.45× 10/sup 6/cells/㎖, 93.25±3.85%, 4.82±0.58%, respectively. 3. The motility of whole, RSP-S and RSP-T semen were higher at 4℃ than at 38℃. When preservation temperature was at 4℃, survival rates of RSP-S and RSP-T sperm were 97.54%-6.25% at 1-72 hrs, 97.40%-5.62% at 1-100 hrs, respectively. 4. The survival rates of slow and rapid frozen 2nd fraction, RSP-S and RSP-T semen were 67.3±4.45%, 88.8±4.46% and 46.4±3.84%, 74.4±4.20%, respectively. Survival rates was significantly higher in frozen RSP-S and RSP-T semen than that in control group(8.5±2.12%).

• The Journal of the Convergence on Culture Technology
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• v.3 no.4
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• pp.59-66
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• 2017

These days, IoT attached diaper are available in markets. It measures child's temperature, oxygen rate, or even humidity of diaper and send the result directly to parent's smartphone. This research emphasize the followings, due to the fact that use of IoT in context of infant care should ultimately be leaded to infant's wellbeing and healthy development. First, there can be many problems when you only focus on usability without careful consideration of the accuracy of the infant's health information produced by the IoT. Second, infant's needs and nature of child should be reflected when developing IoT which supports infant care. The use of the IoT should not take away the chance of physical contact such as eye-contact or patting and hugging between the caregiver and baby. IoT is very important, however in terms of infant development, connect with IoT cannot antecede contact with child.

• Transactions of Materials Processing
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• v.30 no.1
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• pp.5-15
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• 2021

The effects of heat treatments (T6 and T73) on the microstructure, mechanical properties, and high cycle fatigue behavior of modified AA7075 alloys were investigated. A modified 7075 alloy was manufactured using modified-Mg (Mg-Al2Ca) instead of the conventional element Mg. Based on the microstructure, the average grain size was 4.5 ㎛ (T6) and 5.2 ㎛ (T73). Regardless of heat treatment, the modified AA7075 alloys consisted of Al matrix containing homogeneously distributed Al2CuMg and MgZn2 phases with reduced Fe-intermetallic compound. Room temperature tensile tests showed that the properties of modified 7075-T6 (Y.S.: 622MPa, T.S: 675MPa, elongation: 15.4%) were superior to those of T73 alloy (Y.S.: 492MPa, T.S: 548MPa, elongation: 12.8%). Experimental data show that the fatigue life of T6 was 400 MPa, about 64% of its yield strength. However, the fatigue life of T73 alloy was 330 MPa and 67%. Irrespective of the stress level, all crack initiation points were located on the specimen surface, and no inclusions acting as stress concentrators were seen. Superior mechanical properties and high cycle fatigue behavior of modified AA7075-T6 alloy are attributed to the fine grains and homogeneous distribution of small second phases such as MgZn2 and Al2CuMg, in addition to reduced Fe-intermetallic compounds.

• The Mathematical Education
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• v.18 no.1
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• pp.21-23
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• 1980

In [3], an extension of B. Brosowski s T-invariant Point Theorem is given where the linearity of the function and the convexity of the set are relaxed. In this paper, our main purpose is to generalize S. P. Singh's T-invariant Point Theorem to Approximation Theory.

• Parasites, Hosts and Diseases
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• v.51 no.4
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• pp.401-412
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• 2013

Because of an increased number of Acanthamoeba keratitis (AK) along with associated disease burdens, medical professionals have become more aware of this pathogen in recent years. In this study, by analyzing both the nuclear 18S small subunit ribosomal RNA (18S rRNA) and mitochondrial 16S rRNA gene loci, 27 clinical Acanthamoeba strains that caused AK in Japan were classified into 3 genotypes, T3 (3 strains), T4 (23 strains), and T5 (one strain). Most haplotypes were identical to the reference haplotypes reported from all over the world, and thus no specificity of the haplotype distribution in Japan was found. The T4 sub-genotype analysis using the 16S rRNA gene locus also revealed a clear subconformation within the T4 cluster, and lead to the recognition of a new sub-genotype T4i, in addition to the previously reported sub-genotypes T4a-T4h. Furthermore, 9 out of 23 strains in the T4 genotype were identified to a specific haplotype (AF479533), which seems to be a causal haplotype of AK. While heterozygous nuclear haplotypes were observed from 2 strains, the mitochondrial haplotypes were homozygous as T4 genotype in the both strains, and suggested a possibility of nuclear hybridization (mating reproduction) between different strains in Acanthamoeba. The nuclear 18S rRNA gene and mitochondrial 16S rRNA gene loci of Acanthamoeba spp. possess different unique characteristics usable for the genotyping analyses, and those specific features could contribute to the establishment of molecular taxonomy for the species complex of Acanthamoeba.

• Research in Community and Public Health Nursing
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• v.18 no.2
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• pp.310-319
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• 2007

Purpose: This study intends to investigate gender role identity and egalitarianism consciousness among adolescents and to determine the relationship between the two factors. Method: Data were collected from 376 middle and high school students in U City. Tools used were the Korean Sexual Role Identity (Kim, J. H., 2005) and the Gender Egalitarianism Consciousness among Adolescents (Kim, 2002). Data were analyzed using SPSS 12.0 for t-test, one-way ANOVA and Pearson correlation coefficient. Results: There was no significant difference between boys and girls in sender role identity. Boys' gender role identity was different according to school grade (t=-3.19, p= .00), frequency of mother's hugging (t=-2.28, p= .02) and girls' according to religion (t=-2.24, p= .03) mother's job (F=3.59, p= .02), father's education level (F=3.20, p= .04), mother's education level (F=3.24, p= .04), family harmony (F=7.28, p= .00), and frequency of mother's hugging (t=-2.41. p= .02). There was significant difference in egalitarianism consciousness according to sender (t=-12.70. p= .00) Boys' egalitarianism consciousness was different according to school type (t= .02, p= .00) and father's education level (F=4.97, p= .02), and girls' according to school grade (t=-4.21 p= .00), school type (t=-3.12, p= .00), father's level of education (F=3.78. p= .02), decision maker of important domestic matter (F=4.95, p= .00) and frequency of mother's hugging (t=2.53, p= .01). In Girls, sexual role identity and sender egalitarianism consciousness were significantly correlated with each other (r= .01, p= .04). Conclusion: Through the study, it was found that boys' concern for sexual equality of was remarkably lower than girls. Therefore, it is necessary to offer curriculums for boys and to start social education for parents.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.29 no.7A
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• pp.786-793
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• 2004

Autonomous data rate control scheme of current IxEV-DO uplink networks can not supper the various QoS requirements of heterogeneous traffics nor hold rise-over-thermal OtoT) constraints. In this paper, an uplink resource management scheme called the modified weighted g-fair (MWGF) scheduler with RoT filling is proposed and evaluated for heterogeneous traffics in cdma2000 type uplink networks. The proposed scheme belongs to a family of centralized resource management schemes and offers QoS guarantee by using priority metrics as well as lower system loading by holding RoT constraints using RoT filling method. With some case-study simulations, the proposed algorithms shows lower average delays of real time users compared to that of autonomous rate control by 29 - 40 ％. It also shows the 1.0 - 1.3 dB lower received RoT level than autonomous rate control schemes, leading to lower network loading.