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        검색결과 17

        1.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        딥러닝(DL: Deep Learning)의 발전으로 오늘날 다양한 분야에서 AI 모델이 만들어지고 사용되고 있다. 오늘날, 컴퓨터의 발전과 DL 알고리즘의 발전에 의해, DL 기반 AI 모델은 수많은 데이터를 학습하고 스스로 규칙을 찾을 수 있다. DeepMind의 Alphago는 학습 데이터 만으로 게임의 규칙을 스스로 판단하고 고수준의 게임 플 레이를 할 수 있다는 가능성을 보여준다. 이런 다양한 DL 알고리즘이 게임 분야에 적용되고 있지만, 스포츠 게임 같이 팀의 전술과 개인 플레이가 공존하는 분야에서는 단일 AI 모델만으로 성공적인 플레이를 이끌어 내기에는 한계가 존재한다. 오늘날, 고품질의 스포츠 게임은 쉽게 접할 수 있다. 하지만, 게임 AI 연구자들이 이런 고품질의 스포츠 게임에 맞는 AI 모델을 개발하기 위해서는 게임 코드 소스를 받거나 게임 회사에서 테 스트용 시뮬레이터를 제공해줘야만 할 수 있다. 게임 AI 연구자들이 활발한 스포츠 게임 분야의 AI 모델을 개 발하기 위해서는 스포츠 게임의 규칙과 특징이 반영되고 접근하기 쉬운 테스트 환경(Test Environment)이 필요 하다. 본 논문에서는 팀의 전술과 개인 플레이가 중요한 스포츠 게임 분야에서 AI 모델을 만들고 테스트할 수 있는 규칙기반 축구 게임 프레임워크를 제안한다.
        4,000원
        3.
        2020.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, epoxy composites were reinforced with multi-walled carbon nanotubes and fused silica particles, dispersing the fillers within the epoxy resin based on a simple physical method using only shear mixing and ultrasonication. The hybrid composite specimens with 0.6 wt% of carbon nanotubes and 50 wt% of silica particles showed improved mechanical properties, with increase in tensile strength and Young’s modulus up to 12 and 37%, respectively, with respect to those of the baseline specimens. The experimental results showed that the low thermal expansion of the silica particles improved the thermal stability of the composites compared with that of the baseline specimen, whereas the thermal expansion slightly increased, due to the increased heat transfer from the exterior to the interior of specimens by the carbon nanotube filler. The coefficient of thermal expansion of the hybrid composite specimen reinforced with 0.6 wt% of carbon nanotubes and 50 wt% of silica particles was decreased by 25%, and the thermal conductivity was increased by about 84%, compared with those of the baseline specimen.
        4,500원
        4.
        2017.04 구독 인증기관·개인회원 무료
        The green peach aphid, Myzus persicae, is one of the most important pests of vegetable crops worldwide. This species cause direct damage by feeding on plant nutrients and indirect damage as transmits many virus vectors. The control of aphid has relied on the use of chemical insecticides and their intensive use over many years has led to the development of resistance. To surmount or avoid these problems, we screened the entomopathogenic fungi against green peach aphid and evaluated their virulences. Several entomopathogenic fungal isolates were selected with high virulence to green peach aphid. Additionally, the antimicrobial activity of the selected fungal isolates was tested and analyzed to phytopathogens. Consequently, these entomopathogenic fungi would be used effectively for dual control agents for the green peach aphid and phytopathogen.
        5.
        2016.06 구독 인증기관·개인회원 무료
        To obtain information on the sanitary of indoor environment in greenhouses used for shiitake cultivation, bacteria associated with larvae and imagoes of Sciaridae flies, pest to shiitake mushroom, were isolated and identified. A total of 1,048 bacterial colonies were isolated from the flies’ larvae and 984 bacterial colonies were isolated from the flies’ imagoes. Based on molecular analysis of the 16S rDNA sequence, Achromobacter xylosoxidans and Tetrathiobacter kashmirensis of β-proteobacteria, Enterobacter asburiae and Raoultella ornithinolytica of γ -proteobacteria, Curtobacterium sp. and Microbacterium thalassium of Actinobacteria, and Penibacillus taichungensis of Firmicutes were identified from the colonies of the flies’ larvae. While, Bacillus megaterium, B. thuringiensis, Lysinbacillus sphaericus and L. fusifomis of Firmicutes, Microbacterium thalassium and Citricoccus parietis of Actinobacteria, and Enterobacter asburiae of γ-proteobacteria were identified from the flies’ imagoes. Some of the isolated bacterial species were known be human pathogens. Overall, the results of this study suggested that mushroom fly carrying human pathogenic bacteria is one of sources impact on the sanitary of indoor environment of greenhouses used for shiitake cultivation.
        6.
        2015.10 구독 인증기관·개인회원 무료
        Porcine epidemic diarrhea virus (PEDV) causes acute diarrhea and dehydration in pigs with high mortality. PEDV is belong to Coronavirus, enveloped, single-stranded, positive-sense RNA virus. PEDV particles were composed of four structure proteins such as a glycosylated peplomer (spike, S) protein, envelope (E), glycosylated membrane (M) protein, and unglycosylated RNA-binding nucleocapsid (N) protein. Many of previous studies talk about this four structure proteins have a great potential to diagnosis and prevent PEDV. In this study we investigated expression of these structure proteins using the bacterial and baculovirus expression system. In bacterial expression system, our results showed that structure proteins fused polyhedrin and intein gene were expressed higher than non-fusion structure proteins. The expressed fusion proteins were used to immune mice for generating a polyclonal antibodies. In baculovirus expression system, co-infection of insect cells with these four recombinant baculoviruses led to self-assembly of virus-like particles as demonstrated by Transmission electron microscopy. They were confirmed by western blot analysis using pre-made polyclonal antibodies. Finding in this study may provide important information for vaccine and diagnostic development.
        7.
        2015.10 구독 인증기관·개인회원 무료
        Insects are among the most diverse groups of animals on the planet, representing more than half of all known living organisms. These insects are found in nearly every environment. Although humans regard certain insects as pests and attempt to control them using insecticides, most insects perform complex ecological functions, and provide either direct or indirect economic benefits to humans. Recently, the importance of insects used as food sources or as pets has increased in many countries, including Korea. In addition, several insects have a strong influence on people's emotion. Insect-mediated mental healthcare program is designed to help people who have disorders with physical, behavior and development. Children who have mental disorder, the experimental group that was provided with an insect-mediated mental healthcare program over a total of 8 sections, one section per week, 60 minutes per section, followed by pre-test and post-test. They responded to therapeutic effect after the completion of the program. Further research on the basis of this study is expected to help children with emotional therapy in other areas.
        8.
        2015.10 구독 인증기관·개인회원 무료
        The population of managed honey bees has been dramatically declining the recent past in worldwide. The one of most common disease of bees is nosemosis, the nosemosis is caused by microsporidia in the genus Nosema. Nosema apis and N. ceranae have been described as honeybee pathogens. These microsporidia are highly evoloved fungi with an obligately intracellular parasitic lifstyle. The disease causes significant detriment to honey production and results in economic losses. In our knowledge, Fumagillin is the only antibiotic approved for control of nosemosis in honey bees, however this antibiotic may have unintended effects on the honey bee host, ultimately contributing to increased prevalence and pathogenicity of Nosema. Therefore, we screened anti-Nosema substances from entomopathogenic fungal culture filtrates using in vitro polar tube germination assay. These fungal metabolites are employed as antibiotic agents. As results, Total 3 samples (23% of 13 total samples) showing the germinating inhibition against N. ceranae. This screening method may be useful for the detection of anti-Nosema substances from various samples and selected samples in this study may be a good feature to be used in the development of a new biocontrol method of nosemosis.
        9.
        2014.10 구독 인증기관·개인회원 무료
        Porcine parvovirus (PPV), a member of the genus Parvovirus, family Parvoviridae, is a significant causative agent in porcine reproductive failure, causing serious economic losses in the swine industry. PPV is a non-enveloped virus and its capsid is assembled from three viral proteins (VP1, VP2, and VP3). The major capsid protein, VP2 is the main target for neutralizing antibodies in PPV. When VP2 was expressed in large amounts, it assembled into virus-like particles (VLPs) similar in size and morphology to the original virions. In this study, we generated the recombinant Bombyx mori nucleopolyhedrovirus (BmNPV) to express the VP2 protein. Expression of the VP2 protein was analyzed by SDS-PAGE and Western blot. The recombinant VP2 protein of approximately 64 kDa was detected by both analyses. The formation of VLP by recombinant VP2 was confirmed through transmission electron microscopy examination. The purified VP2 protein assembled into spherical particles with diameters ranging from 20 to 22 nm.
        10.
        2014.07 구독 인증기관 무료, 개인회원 유료
        Adding new attributes is the main strategy firms use to attract consumers in many industries, but the impact of new attributes may be ambiguous, as indicated by the results of several studies (Bertini, Ofek and Ariely, 2009; Griffin and Broniarczyk, 2010; Nam, Wang and Lee, 2012; Sun, Keh and Lee, 2012; Zhang and Fitzimons, 1999; Zhang, Kardes and Cronley, 2002). The demand for innovative, upgraded, and integrated products is higher than ever before, and firms’ ability to meet this demand is tenuous in many cases. Take the example of the iPhone, where the touch pad option is the new feature that overcomes the disadvantages of a regular keypad, and where other options such as SIRI and other convenient software technologies provide good reasons to purchase or upgrade a smart phone. Although the transition from keypad to touch screen is occurring rapidly in the technology market, many consumers still opt to utilize their old phones rather than upgrading. The alignability of the attributes of the smart phone may affect their decision-making. Self-regulatory factors moderate decision-making based on alignable and non-alignable attributes. Promotion and prevention self-regulation systems managed across separate mental accounts are involved consumer information flow process in the sense that alignable attributes engender risk aversion, whereas non-alignable attributes engender risk seeking (Zhou and Pham, 2004). More cognitive effort may be required to evaluate non-alignable attributes due to the absence of inferential references inherent in the newness of features (Nam et al., 2012; Sun et al., 2012). Accordingly, if there is no significant difference in alignable attributes between products, consumers will put more weight on non-alignable attributes (Brown and Carpenter, 2000). For high-technology products, if alignable attributes satisfy consumers’ perceived utility as weighed against the cost incurred, consumers may compare non-alignable attributes in order to justify their purchases. Even if non-alignable attributes are trivial, they may be important to the final decision. Based on evaluations of the latter, consumers can justify the purchase (Brown and Carpenter, 2000). Although non-alignable attributes may seem peripheral and complementary, they may contribute to the success of a product due to their novelty, uniqueness and role in simplifying the purchase choice (Carpenter, Glazer and Nakamoto, 1994). However, if consumers perceive that non-alignable attributes fundamentally affect product quality, they may infer that its alignable attributes are relatively inferior. This thinking process may result in a negative evaluation of the product (Simonson, Nowlis and Simonson, 1993). As mentioned earlier, consumers may associate non-alignable attributes with unnecessary costs (Brown and Carpenter, 2000). In the experiment of Bertini et al. (2009), consumers preferred the MP3 player with the BOSS earphone over the one with no other option, which led to a decrease in the willingness to upgrade the product. They do not evaluate non-alignable attributes in isolation, but may use those instrumentally. In the case of high technology products, when information about non-alignable attributes becomes available, ambiguity arises from the integration of distinctive features and functionalities, which are non-alignable attributes, and moreover from the integration of non-alignable attributes with alignable attributes. Consumer beliefs and attitude resulted from the mediating role of this ambiguity are formed holistically by non-selective attention for integral stimuli (alignable and non-alignable attributes) (Nosofsky, 1986, 1987). When consumers ambiguous towards a bundle of attributes, which is nothing but the product, they are inclined to interpret it positively (Bar-Hill and Budescu, 1995; Goldsmith and Amir, 2010). Consumers are hypothesized to exhibit innate optimism, being biased towards unforeseen benefits. They are even sensitive to the specific types of non-alignable attributes: central vs. peripheral attributes. Thus, in strategizing for product marketing purposes, non-alignable attributes should be positioned as peripheral factors rather than as central factors, especially in the early stages of product introduction. Hypothesis Development Consumers make judgments about the obsolescence of the products they currently use. Various factors influence the decision to upgrade. Obsolescence is a loss in value since the launch of a product, not because the product has become less useful, but because a new product with upgraded features and designs has become available to consumers (Bayus, 1991; Chung, Han and Sohn, 2012; Levinthal and Purohit, 1989). Consumers’ expectations about improvement in the new version are based upon two types of obsolescence that influence their willingness to upgrade (pay) for the new product: technological obsolescence and psychological obsolescence. Much research has been done (Bayus, 1991; Chung et al., 2012; Levinthal and Purohit, 1989); however, consumers’ strategic decision-making has not always been clearly understood. They may not know in advance what product to choose, or they may lack information to utilize during the buying process. In addition, technological progress is so rapid and uncertain that consumers may not be able to keep up with the novelty of new technologies. They may have difficulty selecting among alternatives that will be standard later in the market. Accordingly, although they may perceive the technological obsolescence of the product, they may not replace it until they feel psychologically justified in doing so. They may not intend to replace the product only for reasons of technological obsolescence due to loss of the sunk cost incurred by its replacement (Okada, 2006). While alignable attributes are more likely to be deterministic, functional and important, non-alignable attributes are more likely to be marginal, hedonic and trivial. Accordingly, consumers may form cognitive attitudes toward alignable attributes and expectations as to how these should change to become more useful. In other words, they may develop their own ideal level (point) for each alignable attribute as they become familiar with them. Thus, consumers experience uncertainty within a range unique to each individual. They judge the feasibility of a purchase insofar as it corresponds to their own ideal points. For example, when Microsoft upgraded from MS Office 2002 to MS Office 2007, the text menu-driven UI (user interface) was changed to become ribbon menu-driven (graphic). Many users of MS Office 2002 had difficulty using the upgraded functions of MS Office 2007. Frequently used features and options in the previous version, even such as cut and paste, were suddenly not easy to use, and consumers who upgraded to the next version were puzzled at the fact that they were unable to properly use the function they got used to. Complexity may be detrimental to ease-of-use judgment with inferred learning costs. Although consumers make inferences based upon their ideal points, the uncertainty involved in this process relates to cognitive referral. Since alignable attributes are representative of prevention, these engender risk aversion for consumers. Consumers who are primed with prevention-focus may prefer not to exert effort to find out how to use features which were easy to use in the previous version just for the sake of upgrading to the new product. Accordingly, uncertainty about ease of use of alignable attributes has a negative effect on consumers’ willingness to replace a product As more information on a product’s non-alignable attributes becomes available, consumers’ ambiguity about the updated product will decrease and their likelihood of replacement will decrease (Smith and Amir, 2010; Norton, Frost and Ariely, 2007: Bar-Hillel and Budescu, 1995; Krizan and Windschitl, 2007). In addition to technological obsolescence, curiosity and self-regulation in terms of the newness and novelty of a product may motivate consumers to replace a product. Existing consumers may be very curious about new information and non-alignable attributes, making every effort to process available information (Alba and Hutchinson, 1987; Maheswaran and Sternthal, 1990; Nam et al., 2012; Sujan, 1985). When non-alignable attributes become available, consumers do not look at them separately from the alignable ones with which the upgraded product is already equipped; instead, they evaluate the product holistically (Bertini et al., 2009). In an identification–classification task, subjects that were able to attend selectively to the relevant dimension and filter the irrelevant one for separable stimuli were unable to do so for integral stimuli. Non-alignable attributes directly affect consumers’ willingness (likelihood) to replace a product. Therefore, a mediating role of ambiguity is evident between non-alignable attributes and consumers’ willingness to replace the product. Thus, we present the following hypotheses: Hypothesis 1-1: When information on alignable attributes becomes available, consumers will be primed with prevention-focus. Hypothesis 1-2: When information on non-alignable attributes is available, consumers will be primed with promotion-focus. Hypothesis 2-1: If consumers are uncertain about the alignable attributes of a product, they will less likely purchase the updated version of the product. Hypothesis 2-2: If consumers are uncertain (ambiguous) about the non-alignable attributes of a product, they will more likely purchase the updated version of the product. Each individual tries to minimize the distance from a current state to a desired state by means of self-regulation (Higgins, Kruglanski and Pierro, 2003). The mode of self-regulation may be either locomotive or assessable. Assessment is a self-regulatory mode in which some objects and states are critically and analytically judged relative to desired means and goals in order to select the best among many alternatives (Kluglanski et al., 2000). Assessors intend to minimize the distance from the current state to the desired state by means of comparative processes to measure, construe and evaluate among alternatives (Higgins et al., 2003). Accordingly, they make cognitive efforts to compare and analyze the alternatives prior to the choice behavior. The other self-regulatory mode, locomotion, involves judging of objects and states with reference to a particular goal in the process of selecting alternatives (Kruglanski et al., 2000; Pierro et al., 2006). Because locomotors emphasize behavior and progress, they are quick to analyze the alternatives and direct in their selection. Locomotors are different from assessors, who select the best alternative via comparative processes. Locomotors try to select the best alternative realistically and heuristically to achieve their goals. They may not commit to analytical assessment of all possible problems in the process. In the process of evaluating alternatives, assessors focus on all attributes rather than on some particular attributes. They continuously try to assess both alignable and non-alignable attributes. By contrast, locomotors want to achieve a particular goal rapidly. When they perceive technological obsolescence, they may rely on information about alignable attributes because they are eager to benefit from improved features and functions. In the same vein, when they perceive psychological obsolescence, they may rely on information about non-alignable attributes because of the differences in value of these attributes from those of the existing product. Therefore, we offer the following hypotheses: Hypothesis 3: When assessors evaluate an updated product, they will put more weight on non-alignable attributes than on alignable attributes. Hypothesis 4: When locomotors evaluate an updated product, they will depend upon attribute information corresponding to the two types of obsolescence. EXPERIMENT 1 Method Experiment 1 explores consumers’ regulatory focus which would be differently primed either with alignable attributes or with nonalignable attributes (H1 and H2). And it explores consumers’ purchase intention via the amount of information (low-information vs. high-information) and regulatory modes (locomotion vs. assessment. A pretest was conducted with a separate sample (n=64) to ensure that the product profile used in the experiment matched the situation where participants perceive alignable attributes to be deterministic, functional and salient, and where they perceive nonalignable attributes to be peripheral, hedonic and novel. We picked the external HDD that participants associated with salience and newness. In the main experiment, two hundred seventy one participants read information about the external HDD and then answers on the alignable and nonalignable attributes of this product. The between-subject experimental design consists of information type (alignable vs. nonalignable attributes) x information amount (low-information vs. high-information). Results We examined that consumers will be primed with different regulatory focus (H1 and H2) upon the type of information via a gap analysis and a mediated regression analysis. The test results were that respondents exposed to the information type of alignable attributes would be primed with prevention-focus (4.60) than with promotion-focus (4.20) (t = -3.180, p < .001), and that respondents exposed to the information type of nonalignable attributes would be primed with promotion-focus (4.44) than with prevention-focus (3.99) (t = -2.746, p < .05). Next, the type of information was treated as a dummy variable, where it takes values of “0” for nonalignable attributes and of “1” for alignable attributes. Respondents’ dominant regulatory focus was set to be the value of prevention which was subtracted from the value of promotion. The primed regulatory focus fully mediates between the type of information and purchase intention (Sobel Z-score = -3.827, p < .01). That is, if consumers are exposed to the information type of alignable attributes, they will be primed with prevention-focus, which will negatively affect consumers’ purchase intention. Accordingly, Hypothesis 1-1 and 1-2 were supported. Furthermore, we examined the differential effect on purchase intention via a 2 (type of information) × 2(amount of information) between-subjects ANOVA (H1-2 and H2-2) as in Figure 2. In the case of respondents exposed to alignable attributes, the purchase intention was higher for certain information (3.75) than for uncertain information (3.20) (t = 2.077, p < .05), whereas in the case of respondents exposed to nonalignable attributes, the purchase intention was higher for uncertain information (4.48) than for certain information (3.81) (t = 2.478, p < .05). Prior knowledge and involvement on the stimulus were controlled as covariates, and respondents were divided into groups by means of the information type and the information amount. The interaction between the variables was investigated (F(1, 271) = 13.413, p < .01). Accordingly, H2-1 and 2-2 were supported. Finally, we examined the differential effect on purchase via 2 (regulatory mode) × 2 (type of information) between-subjects ANOVA (H4 and H5) as in Figure 3. Regulatory mode was dichotomized into locomotion and assessment by the median of values of assessment subtracted from those of locomotion. In the assessors’ case, a difference between the purchase intentions by means of the type of information – alignable attributes (3.60) and nonalignable attributes (3.73), was not found (t=-.533, p > .10). Hypothesis 3 was rejected. On the other hand, in the locomotors’ case, the purchase intention of respondents exposed to the information type of nonalignable attributes (4.53) would be higher than that of those exposed to the information type of alignable attributes (3.38) (t = 3.826, p < .01). Accordingly, hypothesis 4 was supported. Prior knowledge and involvement on the stimulus were controlled as covariates, respondents were divided into groups by means of regulatory mode and the information type. The interaction among purchase intention, regulartory mode and the information type (F(1,271) = 7.647, p < 0.01).
        4,000원
        11.
        2014.04 구독 인증기관·개인회원 무료
        Insect constitute the largest and most diverse group of animals on world and also serve as the hosts or nutrient sources. In addition, several insects have a strong influence on people's emotion. To utilize the preference and interest of insects in the field of mental healthcare, a survey study was conducted with individual living in Korea. As results, the most people had a high preference and interest of insect, but some were disagreeable to the insect itself. The preference and interest of insect were high on male, adult and practician experienced insect-related events than female, student and non-practician, respectively. The most favored insects were familiar or pet insects such as Papilio xuthus, Lucanus maculifemoratus, Allomyrina dichotoma and Lampyridae. These results may be useful to develop a healing program for mental healthcare using insects. Further research is needed to determine the effects of these insect in the mental therapy for this purpose.
        12.
        2012.06 구독 인증기관·개인회원 무료
        Acteoside acts as an anti-oxidative activity and anti-apoptosis in the cells. But, it has been not studied on maturation and development of porcine oocytes. The aims of the present study were to examine the effects of acteoside on the morphological progress of meiosis, developmental competence, and ROS in porcine oocytes. Oocytes were matured in tissue culture medium-199, supplemented with acteoside at various concentrations: 0 (control), 10, 30 and 50 μM. The oocytes maturation rates of groups supplemented with acteoside were no significantly different (81.13, 85.96, 82.95 and 83.68%, respectively). Level of ROS was significantly decreased in acteoside treated group. Furthermore, the parthenogenetic blastocyst rate was significantly improved in 10 μM acteoside treated group compared with control group (44.83 vs. 27.75%). And we investigated effect of acteoside on the oocytes condition represented by cytoplasmic maturation by homogeneous distribution and formation of cytoplasmic organelles and regulation of apoptosis-related genes. In the results. during IVM, 10 μM acteoside treated oocytes showed that the mitochondria and lipid droplet were smaller and homogeneous distribution in cytoplasm compare with control oocytes. And reverse transcription polymerase chain reaction (RTPCR) of parthenogenetic blstocysts revealed that acteoside increased the anti-apoptotic genes (Mcl-1, Bcl-2 and Bcl-xL), whereas reduced the expression of pro-apoptotic genes (Bax and Bak). In conclusion, based on the results, the effect of acteoside on IVM was not attractive. However, in acteoside treated group, cytoplasmic maturation seemed to be improved with morphologically uniform distribution of cytoplasmic organelles. Furthermore, embryonic development in acteoside treated group was significantly highly increased than that of non-treated group. Our results represents that addition of acteoside to the IVM medium has a beneficial effect in physiology of porcine oocytes, providing a improved method for porcine oocytes in vitro. * This work was supported by a grant (Code# PJ008148) from BioGreen21 Program, Rural Development Administration, Republic of Korea.
        14.
        2016.06 KCI 등재 서비스 종료(열람 제한)
        This study describes results on sexual maturation and characteristics of natural spawned eggs to develop a method for the production of stable, healthy fertilized eggs from captive-reared yellowtail kingfish, Seriola lalandi. A total of 59 yellowtail kingfish were captured off the coast of Jeju Island, after which the broodstock was cultured in indoor culture tank (100 m3) until they were 6.1–14.9 kg in body weight. As part of the rearing management for induced sex maturation, the intensity of illumination was maintained at 130 lux. The photoperiod (light/dark; L/D) was set to a 12 L/12 D from October 2013 to January 2014, and 15 L/9 D from February 2014 to June 2014. Feeds comprised mainly EP (Extruded Pellets), with squid cuttlefish added for improvement of egg quality, and was given from April to June 2014. The first spawning of yellowtail kingfish occurred in May 3, 2014, at a water temperature of 17.0°C. Spawning continued until June 12, 2014, with the water temperature set at 20.5°C. Time of spawning was 26 times at this period. The total number of eggs that spawned during the spawning period was 4,449×103. The buoyant rate of spawning eggs and fertilization rate of buoyant eggs during the spawned period were 76.1% and 100%, respectively. The diameters of the egg and oil globule were 1.388 ± 0.041 mm and 0.378 ± 0.029 mm, respectively, which was higher in early eggs than in those from late during the spawned period.
        15.
        2016.06 KCI 등재 서비스 종료(열람 제한)
        This study monitored the morphological development of embryo, larvae and juvenile yellowtail kingfish, Seriola lalandi, for their aquaculture. The fertilized eggs obtained by natural spawning were spherical shape and buoyant. Fertilized eggs were transparent and had one oil globule in the yolk, with an egg diameter of 1.35 ± 0.04 mm and an oil globule diameter of 0.32 ± 0.02 mm. The fertilized eggs hatched 67–75 h after fertilization in water at 20 ± 0.5°C. The total length (TL) of the hatched larvae was 3.62 ± 0.16 mm. During hatching, the larvae, with their mouth and anus not yet opened. The yolk was completely absorbed 3 days after hatching (DAH), while the TL of post-larvae was 4.72 ± 0.07 mm. At 40 DAH, the juveniles had grown to 30.44 ± 4.07 mm in TL, body depth increased, the body color changed to a black, yellow, and light gray-blue color, and 3–4 vertical stripes appeared. At 45 DAH, the juveniles were 38.67 ± 5.65 mm in TL and 10.10 ± 0.94 mm in body depth. The fish were green with a light orange color, with 7 faint green-brown stripes on the sides of their body. At 87 DAH, the juveniles had grown to 236.11 mm in TL, 217.68 mm in fork length, and 136.5 g in weight. The fish resembled their adult form, with a light yellow-green body color, loss of the pattern on the sides of their body, and a yellow coloration at the tip of the caudal fin.
        17.
        2002.12 KCI 등재 서비스 종료(열람 제한)
        Sunmang' is a new rapeseed (Brassica napus L.) of F1 hybrid with high yield and high quality for oil and meal. This hybrid was developed from the cross between Mokpo-CGMS (male sterile line) and 84055-B-10-3-1-6 (restore line) in 1996. It was a