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        검색결과 1,884

        1221.
        2014.07 구독 인증기관·개인회원 무료
        This research employs two studies to examine the effects of individuals’ (promotion versus prevention) regulatory focus on a variety of environmentally responsible reactions. Results of Study 1 revealed a significant positive correlation between chronic promotion focus and general environmental concern but no significant correlation between chronic prevention focus and environmental concern. Study 2 examined the relationships between an individual’s regulatory focus, both measured and primed, and environmental concern, attitudes toward and intentions to perform environmentally responsible behaviors, and affect toward self and others who did or did not engage in environmentally responsible behaviors. The influence of regulatory fit (i.e., promotion focus & recycle message; prevention focus & reduce message) on these same variables was also investigated. Results showed that participants’ general environmental concern, attitudes toward and intentions to act on specific conservation messaging, and positive emotions toward themselves and others that do respond favorably to the messages intensified as their chronic promotion focus rose. A positive relationship between chronic promotion focus and negative emotions directed at others that do not make an effort to do what the conservation message advocates was also evident. In addition, general environmental concern fully mediated the effect of chronic promotion focus on positive emotions as a result of others’ environmentally responsible actions. Partial mediation via environmental concern also takes place on intentions to follow the message advice and positive emotions directed toward oneself on doing so. Chronic prevention focus was not significantly related with general environmental concern, attitudes toward or intentions to engage in the recommended conservation behavior. As participants’ chronic prevention focus rose however, their negative emotions as a result of they themselves as well as others not following this advice increased. Study 2 also revealed that priming a promotion focus strengthened environmentally responsible attitudes and intentions, and positive emotions toward others that behaved responsibly. Results also showed that a promotion prime also triggered greater negative emotions directed at others that did not behave responsibly. Conversely, a prevention focus prime did not significantly alter attitudes or intentions to do as the conservation message advocated. Further testing revealed greater positive affect toward others’ environmental responsibility as a result of prevention priming. No fit effects between chronic or primed regulatory (promotion or prevention) focus and conservation messages (framed as recycle, reduce, or recycle and reduce) were found in this study however. This lack of effects may have been due to the majority of participants inferring that the conservation messages contained both recycle and reduce components regardless of the type of message they viewed. This work has extended our understanding of Regulatory Focus Theory by demonstrating the relationship of promotion focus to environmental concern and its influence on environmental attitudes and intentions. Our results suggest that environmentally responsible attitudes and intentions may be encouraged by fostering the adoption of a promotion focus. Our results further suggest that fostering a promotion focus may yield both positive affect for self and others who do behave in an environmentally responsible manner and negative affect for self and others who do not behave in an environmentally responsible manner.
        1222.
        2014.07 구독 인증기관·개인회원 무료
        Every company is buzzing “innovation” these days, while continuously developing and launching new products. However, empirical research points to high failure rates of innovations, indicating that most new products fail as they are rejected by consumers due to their resistance to innovation. Using a scenario-based experiment, we show that innovation resistance evolves from individual’s inclination to resist changes (cognitive resistance) and status quo satisfaction (situational resistance), inhibiting new product adoption. While consumers high on cognitive or situational resistance were shown to exhibit negative effects, that were similar in their magnitude, consumers high on both dimensions show the strongest predisposition to resist innovations. Thus, these consumers represent the most crucial segment when it comes to new product launches.
        1223.
        2014.07 구독 인증기관 무료, 개인회원 유료
        Marketing green products can be challenging and identifying the preferences of consumers can help marketers overcome these challenges by developing focused marketing solutions. This research was conducted to examine the affects of cultural differences on the perception of green buildings thus the associated preferences of the occupants. This study found that South Koreans perceive indoor environmental quality as the most important green building attribute while Americans feel the same way for the materials and resources used to build. Interdisciplinary approaches such as the ones developed in this study can help develop targeted marketing strategies to ultimately benefit multiple industries by offering sustainable solutions to the growing global and regional environmental, economic, and social problems.
        4,000원
        1224.
        2014.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This paper describes the application method of bumper area defined in the ship domain theory and it is to identify risky sectors in VTS(Vessel Traffic Services) area. The final goal of this work is to develop early warning system providing the location information with high traffic risks in Mokpo VTS area and to prevent the human errors of VTS Officer(VTSO). The current goal of this paper is to find evaluation and detection method of risky sectors. The ratio between overlapped bumper area of each vessels and the summing area of a designated sector, Ratio to Evaluate Risk(RER) r is used as one of evaluation and detection parameter. The usability of overlapped bumper area is testified through three kinds of scenarios for various traffic situations. The marine traffic data used in the experiments is collected by AIS(Automatic Identification System) receiver and then compiled in the SQL(Structured Query Language) Server. Through the analysis of passing vessel‘s tracks within the boundary of Mokpo VTS area, the total of 11 sectors are identified as evaluation unit sector. As experiment results from risk evaluation for the 11 sectors, it is clearly known that the proposed method with RER r can provide the location information of high risky sectors which are need to keep traffic tracks of vessel movements and to maintain traffic monitoring by VTSO.
        4,000원
        1225.
        2014.06 구독 인증기관·개인회원 무료
        Russula compacta, a wild mushroom, belongs to Russulaceae, Russulales of Basidiomycota. This study was conducted to evaluate the free radical scavenging, anti-inflammatory, anticholinesterase and anti-α-glucosidase effects from fruiting bodies of R. compacta extracted with methanol and hot water. In 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging effects, the methanol and hot water extracts showed good scavenging effects comparable with positive control, BHT. The chelating effect of methanol and hot water extracts of the mushroom were significantly higher than the positive control, BHT. The reducing power of the methanol and hot water extracts of the mushroom were lower than the positive control at the concentrations tested. In the HPLC anaysis of phenolic acids profile of the mushroom extract, 7 phenolic acids such as gallic acid, vanillin, rutin hydrate, resveratol, quercetin formononetin, and biochanin-A were detected. Nitric oxide (NO) production in lipopolysaccahride (LPS) activated RAW 264.7 cells was inhibited by 1.5-fold with the treatment of methanol extract when compared with the control. In the anti-cholinesterase activity assay, the methanol extract inhibited the acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) effects by 73.9% and 81.05% at the 1.0 mg/mL concentration, whereas galanthamine, the standard drug, inhibited the AChE and BChE activities by 97.80% and 81.12%, respectively at the same concentration. The methanol and hot water extracts of the mushroom inhibited the α-glucosidase activity by 55.44% and 62.00%, respectively at the 2.0 mg/mL concentration, while acarbose, the positive control inhibited the α-glucosidase activity by 81.81% at the 2.0 mg/mL concentration. From the experimental results, the fruiting bodies of R. compacta contained natural antioxidant, anti-inflammatory, anti-cholinesterase, and anti-diabetic substances, which might be used for health foods.
        1226.
        2014.06 구독 인증기관·개인회원 무료
        Coprinellus miaceus, belongs to Coprinaceae of Agaricales, Basidiomycota, has been used for an edible purposes in asian countries. This experiment was initiated to evaluate the free radical scavenging, free radical scavenging, anti-acetylcholinesterase, anti-inflammatory and α-glucosidase inhibitory activities of C. micaceus fruiting bodies extracted with methanol and hot water. In 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay, the scavenging activities of methanol and hot water extracts were lower than that of positive control, BHT. The chelating effects of methanol and hot water extracts were significantly higher than positive control, BHT at the concentrations of 0.125-2.0 mg/mL. In the reducing power assay, methanol and hot water extracts exhibited the lower activities than the positive control, BHT at the 0.125-0.2 mg/mL concentration. In the HPLC analysis of phenolic acids profile of the mushroom fruiting bodies, 4 phenolic compounds including procatechuic acid, chlorogenic acid, (-)-epicatechin, and naringin were detected. The tyrosinase inhibitory activities of methanol and hot water extracts were 91.33% and 91.99% at 2.0 mg/mL concentration, while the inhibitory activity of kojic acid, the positive control, was 99.61%. Nitric oxide (NO) production in lipopolysaccahride (LPS) activated RAW 264.7 cells were inhibited by the methanol extract in a concentration dependent manner. In the acetylcholinesterase (AChE) inhibitory activity assay, methanol and hot water extracts of the mushroom inhibited the AChE by 94.64% and 74.19%, respectively at the 1.0 mg/mL concentration, whereas galanthamine, the standard drug inhibited the AChE activity by 97.80% at the same concentration. The methanol and hot water extracts of the mushroom inhibited the α-glucosidase activity by 62.26% and 67.59%, respectively at the 2.0 mg/mL concentration, while acarbose, the positive control inhibited the α-glucosidase activity by 81.81% at the same concentration. Therefore, it is concluded that fruiting bodies of C. micaceus contained natural antioxidant, anti-inflammatory, anti-acetylcholinesterase and α-glucosidase inhibitory substances which might be used for promoting human health.
        1227.
        2014.06 구독 인증기관·개인회원 무료
        Lentinus giganteus is a edible mushroom cultivated in Asian countries. The present study was initiated to evaluate the anti-inflammatory, anti-acetylcholinesterase, anti-α-glucosidase, and free radical scavenging activities from fruiting bodies of L. giganteus extracted with methanol and hot water. The free radical scavenging activities of methanol and hot water extracts on 1,1-diphenyl-2-picrylhydrazyl (DPPH) were 92.26% and 90.17% at 2.0 mg/mL concentration, respectively and comparable with positive control, BHT. The chelating activities of methanol and hot water extracts were significantly higher than the positive control tested. The reducing power of methanol and hot water extracts showed lower activities compared to positive control, BHT. The phenolic and flavonoid contents of hot water extract were 1.56 μg/mg and 24.35 μg/mg, respectively. Nitric oxide (NO) produced by lipopolysaccahride (LPS) activated RAW 264.7 cells were significantly inhibited by treatment of methanol and hot water extracts. The methanol extract inhibited the acetylcholinesterase (AChE) activity by 91.19% at the 2.0 mg/mL concentration, whereas galanthamine, the standard drug, inhibited the AChE activity by 97.80%. The hot water extracts inhibited the α-amylase and α-glucosidase activities by 78.86% and 80.78%, respectively at the 2.0 mg/mL concentration, while acarbose, the positive control, inhibited the activities by 89.91% and 81.81%, respectively at the same concentration. Therefore, it is concluded that fruiting bodies of L. giganteus contain antioxidant, anti-inflammatory, anti-cholinesterase, and anti-diabetic substances, which can be used for natural health food for promoting human health.
        1228.
        2014.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        We apply differential affine velocity estimator (DAVE) to the Solar Dynamics Observatory (SDO)/Helioseismic and Magnetic Imager (HMI) 12-min line-of-sight magnetograms, and separately cal- culate the injected magnetic helicity for the leading and the following polarities of nine emerging bipolar active regions (ARs). Comparing magnetic helicity ux of the leading polarity with the following polarity, we nd that six ARs studied in this paper have the following polarity that injected more magnetic helicity ux than that of the leading polarity. We also measure the mean area of each polarity in all the nine ARs, and nd that the compact polarity tend to possess more magnetic helicity ux than the fragmented one. Our results con rm the previous studies on asymmetry of magnetic helicity that emerging bipolar ARs have a polarity preference in injecting magnetic helicity. Based on the changes of unsigned magnetic ux, we divide the emergence process into two evolutionary stages: (1) an increasing stage before the peak ux and (2) a constant or decreasing stage after the peak ux. Obvious changes on magnetic helicity ux can be seen during transition from one stage to another. Seven ARs have one or both polarity that changed the sign of magnetic helicity ux. Additionally, the prevailing polarity of the two ARs, which injects more magnetic helicity, changes form the following polarity to the leading one.
        4,000원
        1229.
        2014.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The aim of this study to investigate the effects of craniocervical flexion on muscle activities of scapular upward rotators during push-up plus exercise in subjects with winging scapula. Eighteen males with scapular winging were recruited, and each subject performed knee push-up plus and other exercises, in two conditions (craniocervical flexion vs. natural head positions). A surface electromyography (EMG) was used to measure upper trapezius (UT), serratus anterior (SA), and lower trapezius (LT) muscle activity. A paired t-test was used to determine the statistical significance between the different condition with/without applying of craniocervical flexion. UT EMG activity significantly decreased and SA EMG activity significantly increased during knee push-up plus involving the craniocervical flexion compared to the natural head position. However, no significant differences (p>.05) were found in the activity of the LT muscle. The UT/SA ratios with and without craniocervical flexion showed a significant difference (p<.05). These results showed that the knee push-up plus other exercises performed with craniocervical flexion could strengthen the serratus anterior muscle and minimize the activity of the UT muscle.
        4,000원
        1230.
        2014.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Three dimensional self-assembled graphene hydrogels were easily fabricated by electron beam irradiation (EBI) using an aqueous solution of wool/poly(vinyl alcohol) and graphene oxide (GO). After exposure to various levels of EBI radiation, the highly porous, self-assembled, wool-based graphene hydrogels were characterized using scanning electron microscopy and Fourier-transform infrared spectroscopy; to determine the gel fraction, degree of swelling, gel strength, kinetics-of-swelling analyses and removal of hexavalent chromium (Cr(VI)) from the aqueous solution. X-ray diffraction results confirmed that EBI played a significantly important role in reducing GO to graphene. The adsorption equilibrium of Cr(VI) was reached within 80 min and the adsorption capacity was dramatically increased as the acidity of the initial solution was decreased from pH 5 to 2. Changes in ionic strength did not exert much effect on the adsorption behavior.
        4,000원
        1231.
        2014.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Conductive polymer composites (CPCs) consist of a polymeric matrix and a conductive fil-er, for example, carbon black, carbon fibers,graphite or carbon nanotubes (CNTs). The criti-cal amount of the electrically conductive fillernecessary to build up a continuous conductive network, and accordingly, to make the material conductive; is referred to as the percolation threshold. From technical and economical viewpoints, it is desirable to decrease the conduc-tive-fillerpercolation-threshold as much as possible. In this study, we investigated the effect of polymer/conductive-fillerinteractions, as well as the processing and morphological devel-opment of low-percolation-threshold (Φc) conductive-polymer composites. The aim of the study was to produce conductive composites containing less multi-walled CNTs (MWCNTs) than required for pure polypropylene (PP) through two approaches: one using various mix-ing methods and the other using immiscible polymer blends. Variants of the conductive PP composite filledwith MWCNT was prepared by dry mixing, melt mixing, mechanofusion, and compression molding. The percolation threshold (Φc) of the MWCNT-PP composites was most successfully lowered using the mechanofusion process than with any other mixing method (2-5 wt%). The mechanofusion process was found to enhance formation of a perco-lation network structure, and to ensure a more uniform state of dispersion in the CPCs. The immiscible-polymer blends were prepared by melt mixing (internal mixer) poly(vinylidene fluoride) (PVD, PP/PVDF, volume ratio 1:1) filled with MWCN.
        4,000원
        1236.
        2014.04 구독 인증기관·개인회원 무료
        This study was conducted to determine the oviposition preference and development of adzuki bean weevil, Callosobruchus chinensis (L.) (Coleoptera: Bruchidae) on five different leguminous seeds a) cowpea, b) white kidney bean c) soybean cultivar Daepung d) mung bean and e) azuki bean. A multiple choice test and a nochoice test were conducted to record the number of eggs laid, total developmental time, number of adults emerged, and adult longevity of C. chinensis on the five different leguminous seeds. Both choice and no-choice tests revealed cowpea seed as the most preferred oviposition substrate. Total developmental time from egg to adult stage ranged from 28 to 31 days; shortest of that on the cowpea followed by adzuki and mung bean seeds. Successful development of C. chinensis was not witnessed on soybean or on kidney bean. Rate of adult emergence was higher on adzuki and mung bean seeds with longer adult longevity of those emerged from adzuki bean and cowpea. Higher egg laying preference and shorter developmental time with longer adult longevity of the beetle on cowpea probably signifies importance of physical as well as chemical attributes of the seed as an oviposition substrate other than evolutionary history of the insect. Cowpea seeds can possibly be used as a pull stimulus either as a trap crop or as a stimulant in the mechanical traps against C. chinensis where other leguminous host crops are grown as main crops.
        1237.
        2014.04 구독 인증기관·개인회원 무료
        Studies have reported differential attractiveness of yellow, white or blue sticky cards to greenhouse pests, especially to Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) and Trialeurodes vaporariorum Westwood (Homoptera: Alyerodidae). The main aim of this study was to determine whether yellow or blue sticky card offers a better option in monitoring or mass trapping these sympatric greenhouse pests. Laboratory study that included a multiple choice and no-choice tests to observe the attractiveness of blue, yellow, white or green sticky card to F. occidentalis and T. vaporariorum was conducted. Also, a glasshouse study was conducted to determine better composite attractiveness of yellow or blue sticky card. F. occidentalis showed higher preference to blue and yellow sticky cards in laboratory study and blue captured the highest number of F. occidentalis in glasshouse followed by the yellow. However, while the blue sticky card captured few T. vaporariorum, the yellow sticky card captured the highest number of T. vaporariorum in both laboratory and glasshouse tests. Since yellow sticky card received composite affinity of both F. occidentalis and T. vaporariorum, placement of yellow sticky card for the greenhouse pests, rather than blue or yellow targeted to individual species, is recommended for economical and optimal monitoring and/or mass trapping success of the tested greenhouse pests.
        1238.
        2014.04 구독 인증기관·개인회원 무료
        왕담배나방 유충은 참깨의 꼬투리를 직접 갉아 먹거나 줄기를 부러뜨려 신초생장을 억제함으로써 수량을 감소시킬 뿐 아니라 종실의 품질도 떨어뜨린다. 2013년에 밀양, 의령, 안동의 노지 및 시설참깨 포장에서 왕담배나방에 의한 참깨의 피해율을 조사한 결과, 밀양, 의령, 안동에서 참깨 꼬투리의 피해율은 각각 노지재배에서 6.2, 11.7, 7.2%였고, 시설재배에서 14.2, 11.9, 4.6%였다. 노지참깨 포장에서 왕담배나방에 대한 요방제 수준을 설정하기 위하여 참깨 줄기의 하부 10∼12마디에 꼬투리가 맺히는 시기와 하부 20∼22마디에 꼬투리가 맺히는 시기에 왕담배나방 3령 유충을 주당 0, 1, 2, 3, 4마리씩 20일간 접종하여 왕담배나방에 의한 수량 감소율과 수량감소율 관련 관계식을 산출하였고, 이 산출식을 이용하여 5%의 수량감소율을 기준으로 요방제 수준을 설정하였다. 줄기하부 10∼12마디에 꼬투리가 맺히는 시기에 왕담배나방의 유충밀도가 주당 1, 2, 3, 4마리일 때 수량감소율은 각각 13.5, 23.0, 33.8, 40.2%였다. 그리고 줄기하부 20∼22마디에 꼬투리가 맺히는 시기에는 각각 4.1, 10.7, 19.5, 29.5%였다. 참깨 생육단계와 왕담배나방의 유충밀도에 따른 수량 감소율과의 관계식은 하부 10∼12마디에 꼬투리가 맺히는 시기가 Y = 10.07x+1.96, R2 = 0.9867, 하부 20∼22마디에 꼬투리가 맺히는 시기가 Y = 7.44X-2.12, R2 = 0.975 이었다. 이 관계식을 이용하여 참깨포장에서 왕담배나방 유충의 요방제 밀도 (5% 수량감소율 기준)를 산출한 결과, 하부 10∼12마디에 꼬투리가 맺히는 시기에는 10주당 3마리, 하부 20∼22마디에 꼬투리가 맺히는 시기는 10주당 10마리였다.
        1239.
        2014.04 구독 인증기관·개인회원 무료
        2010년부터 2013년까지 제주, 밀양, 원주의 잡곡포장에 왕담배나방 성페로몬트랩을 설치하여 4월부터 10월까지 유인량을 조사하였다. 지역간 왕담배나방의 평균 발생량은 제주에서 총 329마리로 밀양 및 원주보다 각각 0.5배 및 4.7배 많았다. 왕담배나방의 발생최성기는 지역별 차이가 매우 심하였는데, 제주는 7월 상순~9월 상순, 밀양은 7월 하순∼9월 중순, 원주는 8월 중순∼9월 중순까지로 나타났다. 유효적산온도에 따른 성충의 연간 발생 세대수는 제주 및 밀양이 4세대, 원주가 3세대였다. 1세대 초발생시기는 제주, 밀양, 원주가 각각 5월 3일, 5월 9일, 5월 12일로 제주에서 가장 빨랐다. 반면 2세대는 제주, 밀양, 원주가 각각 7월 11일, 7월 8일, 7월 11일로 밀양에서 가장 빨랐고, 3세대도 제주, 밀양, 원주에서 각각 8월 21일, 8월 18일, 8월 22일로 밀양에서 가장 빨랐다. 4세대는 제주 및 밀양에서 각각 10월 14일, 10월 9일이었다. 왕담배나방 유충의 수수종실 섭식량은 3령, 4령, 5령, 6령에서 각각 5.4개, 12.7개, 31.9개 및 54.2개로 령기가 증가할수록 섭식량도 증가하였다. 왕담배나방 2~3령 유충에 의한 수수 이삭의 피해율은 출수기가 이삭당 유충 1마리 발생시 32.5%, 2마리 62.2%, 3마리 80.8%, 4마리 91.8% 이었고, 개화기는 1마리 21.7%, 2마리 39.8%, 3마리 61.5%, 4마리 80.4% 이었다. 그리고 등숙기는 1마리 10.9%, 2마리 18.6%, 3마리 29.3%, 4마리 46.4% 이었다. 수수 생육단계와 왕담배나방 유충의 발생밀도에 따른 수수의 수량 감소율과의 관계식은 출수기 Y = 23.278X+6.744, R2 = 0.9636, 개화기 Y = 20.197X-0.0712, R2 = 0.999, 등숙기 Y = 11.343X-1.1201, R2 = 0.9807 이었다. 이 관계식을 이용하여 수수포장의 왕담배나방 유충에 대한 요방제 밀도 (5% 수량감소율)를 산출한 결과, 20이삭당 출수기는 1.4마리, 개화기는 5.0마리, 등숙기는 10.8마리였다.
        1240.
        2014.04 구독 인증기관·개인회원 무료
        The effect of increased carbon dioxide concentration in atmosphere was examined on the pheromone system of Helicoverpa armigera reared from egg stage to adult in three room. Two of three room (2×2×2 m) were treated with carbon dioxide gas as 600 ppm and 1,000 ppm, respectively. Mean of carbon dioxide concentration was 429.1 ppm in the control, 603.3 ppm for 600 ppm, and 1011.5 ppm for 1,000 ppm during experiment. Electroantenograph (EAG) test was conducted on 3-d-old male adults with air, hexane, and a series of their sex pheromone component, Z11-16Al, from 0.01 to 100 ng. The result was that male EAG responses of 600 and 1,000 ppm were 30.3% lower than that of control room. Production of Z11-16:Al was examined on about twenty 2-d-old virgin females. Carbon dioxide increases did not show a statistically significant difference. However, higher amount of sex pheromone was produced in females of 600 and 1,000 ppm. So, This experiment was replicated with different population reared again. The amount of the sex pheromone per female was 108.9 and 118.1 ng in control room, 139.8 and 141.8 ng in 600 ppm room, and 124.6 and 125.8 ng in 1,000 ppm room.