• Korean journal of applied entomology
• /
• v.53 no.3
• /
• pp.239-246
• /
• 2014

Two congener species of Grapholita molesta and G. dimorpha have similar host ranges and adult occurrence patterns. In addition, the two species commonly use cis-8-dodecenyl acetate (Z8-12:Ac) and trans-8-dodecenyl acetate (E8-12:Ac) as their major sex pheromone components. The commercial lures made of the two components, therefore, suffer a mixed attraction of these two species. This study was conducted to assess any effect of their known minor sex pheromone components to reduce the mixed attraction. When cis-8-tetradecenyl acetate (Z8-14:Ac) was added to the commercial sex pheromone consisting of Z8-12:Ac/E8-12:Ac = 85/15, the attraction to G. dimorpha was not affected, but its attraction to G. molesta was significantly reduced. However, the addition of either dodecanyl acetate (12:Ac) or tetradedecanyl acetate (14:Ac) did not influence on the attraction of both species to the commercial lure. The addition of E8-14:Ac to 3-component sex pheromone, Z8-12:Ac/E8-12:Ac/Z8-14:Ac = 85/15/10, the attraction to G. dimorpha was rather significantly suppressed. From these results, the 3-component sex pheromone, Z8-12:Ac/E8-12:Ac/Z8-14:Ac = 85/15/10 was suggested as an improved composition of sex pheromone lure for G. dimorpha.

• Korean journal of applied entomology
• /
• v.9 no.2
• /
• pp.85-90
• /
• 1970

This study was conducted to find out the evidence of a sex attraction in the fall webworm moths, Hyphantria cunea D., in the fold conditions. The study dealt with the sex attraction between the sexes, selection of effective trap type, effect of moth age on the sex attractiveness, sex attractiveness after copulation, and the time of the sex attraction in the day, The trap was baited with a living moth in the cylindrical screened case 4cm. in long and 2.7cm in diameter. The traps were attached on the tree in a horizontal position at the height of about 3m. on the ground. A sex pheromone was evident in the female moth which attracted the male to the lure, and the modified sticky trap was most effective in this experiment. The trap consisted of a cylindrical powder milk can 11.5cm. in long and 10cm. in diameter with the entry hole 4.8cm, in diameter at both ends of the can, and the inside of can was lined with paper coated with acri-soil(sodium poliacrilate) to catch them. Males were mostly attracted to females during their first 2 days of life, and its attractiveness decreased with moth age, No males were attracted to females more than five days old, and no females lived for more than six days. After copulation, sexual attractiveness was decreased swiftly, Sexual attractiveness was found to be greatest between 4 and 6 A.M. Living females can be used as effective baits for luring the males to the fold trapt.

• Journal of Korea Entertainment Industry Association
• /
• v.14 no.7
• /
• pp.203-216
• /
• 2020

The purpose of this study is to reveal the effects of the VDSPA(Vulnerability to the Different Sex's Physical Attraction) on IOM(the intention of open marriages), the mediating effect of the SAEMR(Self Acceptance of Extra-Marital Relationship) and the moderating effect of gender. This is an empirical research based on data analysis obtained by surveying 655. The notable findings are as follow: First, respondents' perceptions of their own extramarital affairs(M=2.284) and open marriages(M=2.175) are generally negative, but women were more negative than men. Second, both men and women were vulnerable to the physical attraction of the opposite sex(M=3.569), especially men than women. Third, the more vulnerable to the physical attraction of the opposite sex, the more receptive to their own infidelity. The more receptive to their own extramarital affair, the more clear their intention to open marriage. Lastly, in the case of women, it is confirmed that the vulnerability of the physical attraction of the opposite sex has a significant effect on the intention of an open marriage, with the acceptability of the one's own infidelity as a mediator. In the case of men, there is no mediating effect of accepting their own extramarital affairs, which proved to be a moderating effect by gender. Unlike men, in the case of women, it is concluded that 'accepting their own extramaritality is a critical factor that directly or indirectly has a significant effects on their intention to open marriage.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.24 no.3
• /
• pp.353-360
• /
• 2000

The purpose of study examined the changes of the man's underclothes from the ancient ages to the early modern ages. The method of study researched literatures and possessions of the museum. In ancient ages, a suit of clothes had the functions of both underclothes and outer garments. In middle ages, underclothes were not exposed and the importance was not recognized while they were worn to show the sense of sin and humility or to punish criminals. In early modern ages, the importance of underclothes recognized as they were exposed. In Renaissance period, the fashion of the day influenced much on the underclothes. In Baroque ages, the functions of underclothes were different according to sexes and men wore underclothes to show their social status. As the outer garments were shortned, shirt wwere also conspicuously exposed. In Rococo ages, drawers were tightened due to the influence of outer garments, men exposed their shirts to show the social status and underclohtes were usually worn to express sexual attraction. Men's underclothes had the functions of class distinction from the ancient ages to the modern ages, except the middle ages and underclothes had the additional functions such as supporting body-shape and sex attraction. The fashion of the day influenced on the changes of the shapes of the shapes of men's underclothes and the changes of outer garments were reflected on underclothes.

• Korean Journal of Child Studies
• /
• v.8 no.1
• /
• pp.49-64
• /
• 1987

The purpose of this study was to investigate the effect of information of appearance, peer preference, and personality traits on children's attraction to unacquainted same sex peers, and to determine the relative importance of the three types of information for the selection of a friend. The subjects of this study were 160 (80 boys and 80 girls) second grade children in Seoul. A Preference Questionnaire was administered in Session I to determine the likes of each subjects. The modified Preference Questionnaire (Reaves, 1981) was used. The subjects were then randomly assigned to one of eight experimental conditions. In Session II, subjects were shown pictures of attractive and unacttractive children, described as having a positive or negative character, with preference similar Of dissimilar to their own. Then they were administered the Interpersonal Attraction Scale (Reaves, 1981). The data were analyzed by three-way ANOVA, $Scheff\acute{e}$ test, and $X^2$. The results of this study were as a follows: The physically attractive stimulus child was preferred to the physically unattractive stimulus child. The stimulus child with preferences similar to the subjects' was preferred to the stimulus with dissimilar preferences. The stimulus with positive personality traits was preferred to the stimulus ehild with a negative personality. A difference in order of importance among the variables with regard to their influence on attraction ratings was found. Personality had stronger influence on attraction ratings than appearance or preference.

• Korean journal of applied entomology
• /
• v.39 no.2
• /
• pp.105-110
• /
• 2000

Sex pheromone composition was analyzed for Dichocrocis punctiferalis, which attacksapple, peach, chestnut fruits, etc., and its behavioral and field trapping studies were conducted to developa monitoring system with its sex pheromone. Virgin females showed maximum mating behavior andhairpencil extrusion behavior between 4-5 hrs after lights-off under 16L18D photoperiod and 26rf 1 "C.During this period, two sex pheromone components, ElO-hexadecenal and ZlO-hexadecenal, weredetected by GC analysis in the hexane extract of abdominal tips of virgin females. The best attraction ofmales to various synthetic sex pheromone blends was obtained at the 70 : 30 ratio of ElO-hexadecenal andZ10-hexadecenal for hair pencil extrusion and at the 80 : 20 ratio for flying upwind response. The highestattractiveness in fields was obtained between 70 : 30 and 80 : 20 from several tests in apple, peach andchestnut orchards.and chestnut orchards.

• Korean journal of applied entomology
• /
• v.45 no.2 s.143
• /
• pp.169-172
• /
• 2006

Sex pheromone blends of large black chafer, Holotrichia parallela (Motschulasky), which consist of a major component L-isoleucine methyl ester (LIME) and a minor component (R)-(-)-linalool, showed different attractiveness depending on the mixing ratios of the two components in potato fields in South Korea. The best ratio for H. parallela attraction was 2.5:1 of LIME and (R)-(-)-linalool. The attraction ability of pheromone traps bated with 2.5:1 ratio did not drop up to 14m, but significantly decreased at 21m from H parallela release point. Korean population of H. parallela showed almost same periodical activity to sex pheromone with that reported in Japan, which showing a circabidian periodicity of 48h cycle.

• The Research Journal of the Costume Culture
• /
• v.6 no.1
• /
• pp.136-148
• /
• 1998

This is a study on the change of the Medievalmen's underclothes. Underclothing includes all such articles, worn by either sex, as were completely or mainly concealed from the spectator by the external costume. Throughout the Middle Ages, the underclothing of both sexes possessed characteristic inherited from earlier times. Its function was purely utilitarian. It was not used to express class distinction and only very indirectly to enhance sex attraction. The idea of underclothes was associated with the idea of the body's sinfulness. Underclothes could also symbolize the discipline of humility. To appear clad only in underclothes was a voluntary form of selfabasement often practised by pilgrims. The notion that underclothes might express the spirit of the changing times, in sympathy with the outer clothing, did not enter the medieval mind. The length of the shirt was less than that of the modern garment, especially after the middle of the fourteenth century. The sleeves were somewhat full, without cuffs, and cut straight. During the second half of the twelfth century, when braies become definitely an undergarment. In the fourteenth century braies became shorter and shorter and the shirt could no longer be tucked in but hung outside over the thighs. After 1340 the costume on the surface somewhat resembling modern 'tights', began to reveal display the shape of the male leg as a form of sex attraction. By the close of the Middle Ages, braies had become less like loincloths, and more like modern bathing trunks. The peasant and laborer did not attempt to keep pace with the changes of fashion but, continued, as a rule, to wear the long braies of their forefathers. The higher ranks how this garment reflected the changes of the mode of outer costumes.

• Journal of Korean Home Economics Education Association
• /
• v.11 no.1
• /
• pp.1-11
• /
• 1999

The purpose of this study were to analyze high school girls’sex role identity and underwear purchasing behaviors, and to provide the educational guidelines for high school girls as a underwear comsumer and the fundamental data necessary for the products planning of underwear manufacturing companies. The questionnaire was composed of questions about the types of sex role identity, pursuit factors and purchasing behaviors of underwear. The respondents were girls from 6 high schools in cities in Chonbuk Province. The questionnaires were collected from April 6th to May 12th in 1998. 510 questionnaires were used for data analysis. Frequency, percent, average, standard deviation, F-test, $$\chi$^2$-test, and Duncan’s multiple range test were followed. The results of this study were as follows：1. Among the sex role identity groups, the androgynous group was the largest, and the masculine group was the smallest among high school girls. 2. High school girls sought after practicality most when purchasing underwears, but sought after the brand least. The androgynous group recognized practicality, aesthetics, and sexual attraction most, but the undifferentiated group recognized them least. 3. The high school girls bought underwears objectively when they were worn out, made use of TV, newspaper, and radio advertisements as the information sources, and considered the size, comfort, and style. They recognized the prices of underwears as moderate. They depended on their mother most when purchasing underwears and reflected their dependents opinion on selecting underwears partially. They purchased at the underwear specialty store.

• Korean journal of applied entomology
• /
• v.51 no.3
• /
• pp.207-213
• /
• 2012

The cryptic mealybug, Pseudococcus cryptus, has been increasingly damaging citrus, particularly those plants grown in plastic greenhouses. This study was conducted to monitor the seasonal phenology of adult male cryptic mealybugs and to determine the timing for control using a sex pheromone trap. Adult males responded to a synthetic sex pheromone and trap color. An increasing number of males were attracted to the traps with increasing concentrations of sex pheromone up to 5 mg. The males occurred annually four times and had three cohorts at a time due to different overwintering developmental stages. After overwintering the adult males began to in mid-late April. A positive correlation was observed between the number of adult males caught in traps and the mean density per twig of all motile stages except first stage nymphs of the cryptic mealybugs. The peak time for the first nymph to occur was estimated from the maximum attraction time of the males, and the cumulative degree days (DD) was 350 DD, similar with the preoviposition period.