• Journal for History of Mathematics
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• v.24 no.1
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• pp.45-61
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• 2011

The starting point of education is the ancient Greek philosophy. In this paper, we research the Hellenism culture: two famous poleis such as Sparta and Athens. Moreover, we investigate prominent philosopher Plato and Aristotle. In particular, we notice early childhood and female education through Hellenism culture. Finally, we study culture, politics and educations of the ancient Roman in order to compare those of our society.

• Asian review of World Histories
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• v.4 no.2
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• pp.191-205
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• 2016

The Periplus of the Erythraean Sea is a Roman period guide to trade and navigation in the Indian Ocean. Justly famous for offering a contemporary and descriptive account of early Indian Ocean trade, the work has been subject to and a point of departure for numerous studies. Its extensive influence on scholarship is, however, also problematic, as it reflects the limited information and cultural and personal bias of its unknown author. Arguably this might have led scholars to overemphasise so-called western or Roman participation in early Indian Ocean trade. Network analysis allows us to map, visualize and measure interconnectedness in the Periplus Maris Erythraei. Many of these connections are not explicitly mentioned in the text, but by connecting not only places with places, but also products with places that export and import them, we get a partly different impression of Indian Ocean trade from that conventionally gathered from the Periplus. It allows us to ask questions about the relationship between coastal cabotage and transoceanic shipping, to identify regional trading circuits, and unexpected centres of long-distance exchange.

• Acta Via Serica
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• v.3 no.2
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• pp.1-22
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• 2018

The concept of the "Seidenstrassen" (Silk Road) was created by the German geographer F. von Richthofen (1833-1905) in 1877. The "Seidenstrassen" means communication between China and the Roman cultural area. To prove the route of dissemination of silk, Richthofen not only focused on geographical substantiality, based on the routes of the Chinese Zhang Qian and the Roman Ptolemy, but also on etymological, historical, and religious sources. In fact, his Silk Road concept has the trade of silk as well as the humanistic ideas of cultural exchange. It is worth noting that in his book China, Richthofen presented the Silk Road as a space-time concept that considers the length of space as well as the length of time by highlighting humanistic examples that came into modern times through the Sea Route. Later, the English term "Silk Road" appeared in 1938, the Japanese term "シルクロ-ド" (sirukurodo) in 1939, and the Korean term "실크로드" (silkrodeu) in 1952.

• International Journal of Computer Science & Network Security
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• v.21 no.2
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• pp.40-43
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• 2021

In the article of instability on the peak power level, duration and repetition period of a multifrequency space-time signal, we calculated the maximum values of the errors of the parameters of the laws of spatial-phase-frequency control. Requirements for the accuracy of the location of the phase centers of the emitters in a cylindrical phased array antenna with pyramidal horns; it is advisable to calculate the radiation field using single-stage and multi-stage distribution laws. The phase centers of individual radiation sources of a cylindrical phased array antenna have been studied; they have almost no effect on the duration and period of recurrence.

• Journal of the Daesoon Academy of Sciences
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• v.18
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• pp.135-148
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• 2004

Why do religions emphasize good deeds like charity or love? What kind of relation are there between good deeds and salvation? Early Buddhism stresses that the deed of mortal cannot escape retribution. And deeds are intentional act, so those are representation of mind. Therefore an issue of mind raises its head before action. The extinction of ignorance and thirsty gives rise to good mind, and the good mind produces good deed. Mahāyāna Buddhism accentuates charity. It signifies that the mind of oneself sympathizes the mind of others. That is impossible unless one throws away attachment to oneself. The alms deed makes that possible. In Roman Catholicism Ten Commandments assert absolute worship to god. The transcendental merits devaluate worldly ones, so the mind can obtain calmness. Protestant claims the one can acquire salvation only by faith. And the salvation leads human to good deed. In conclusion good deeds are not ways and means to mokṣa or grace, but identical with them in Early Buddhism and Mahāyāna Buddhism, and Roman Catholicism and Protestant.

• Journal of applied mathematics & informatics
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• v.41 no.6
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• pp.1193-1207
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• 2023

In this paper, we introduce an iP₂ extension of a star graph S_n for n ≥ 2 and 1 ≤ i ≤ n - 1. Certain general properties satisfied by order, size, domination (or Roman) numbers γ (or γ_R) of an iP₂ extended star graph are studied. Finally, we study how the parameters such as chromatic number and harmonious chromatic number are affected when an iP₂ extension process acts on the star graphs.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.05a
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• pp.819-820
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• 2010

• Asian-Australasian Journal of Animal Sciences
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• v.29 no.6
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• pp.901-907
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• 2016

The present study investigated stocking density and genetic lines, factors that may alter the severity and incidence of angel wing (AW), in White Roman geese. Geese (n = 384) from two genetically selected lines (normal- winged line, NL, and angel-winged line, AL, respectively) and one commercial line (CL) were raised in four pens. Following common commercial practice, low-stocking-density (LD), medium-stocking-density, and high-stocking-density treatments were respectively administered to 24, 32, and 40 geese per pen at 0 to 3 weeks ($1.92m^2/pen$) and 4 to 6 weeks ($13.2m^2/pen$) of age and to 24, 30, and 36 geese at 7 to 14 weeks ($20.0m^2/pen$) of age. The results revealed that stocking density mainly affected body weight gain in geese younger than 4 weeks, and that geese subjected to LD had a high body weight at 2 weeks of age. However, the effect of stocking density on the severity score of AW (SSAW) and incidence of AW (IAW) did not differ significantly among the treatments. Differences were observed among the genetic stocks; that is, SSAW and IAW were significantly higher in AL than in NL and CL. Genetic selection generally aggravates AW, complicating its elimination. To effectively reduce IAW, stocking density, a suspected causal factor, should be lower than that presently applied commercially.

• Asian-Australasian Journal of Animal Sciences
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• v.33 no.9
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• pp.1455-1462
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• 2020

Objective: The purpose of this study was to investigate whether goose growth and feather characteristics are influenced by their line and feeding surroundings, inclusive of floor materials and types, since there are no reports regarding these factors. Methods: The 240 White Roman geese which were hatched and sex identified came from 3 commercial goose farms. They were randomly distributed to 24 pens depending on a completely random design. The study continued for 13 weeks and included 3 lines of commercial geese and 2 floor types (cement strip floor [CSF] or cement floor [CF]). Results: The day one gosling weight from A farm was lower than other two farms (96 g vs 107 and 115 g; p<0.001). Afterwards, the body weight, back length, keel length, chest girth and main wing feather length among 3 farms showed no significance difference prior to 12 weeks. The CF group showed heavier body weight, shorter back length, longer keel length, shorter chest girth and shorter main wing feather length than the CSF group prior to 12 weeks. The down weight in the CF was heavier than the CSF group (57.1 g vs 41.8 g; p<0.01) prior to 13 weeks. Conclusion: The body weight showed the positive relations for dry feather weight (r = 0.59), down weight (r = 0.69), percent of the down weight of live body weight prior to 13 weeks (r = 0.61).

• Asian-Australasian Journal of Animal Sciences
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• v.22 no.7
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• pp.1043-1047
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• 2009

Three experiments were conducted to determine the conversion rate of formic and acetic acids into methane in the gastrointestinal tracts of geese. In experiment I, two sets of two 4-month-old male White Roman geese were allocated to one of two treatment groups. Each set of geese was inoculated either with formic acid or with phosphate buffer solution (PBS). After the acid or the PBS was inoculated into the esophagi of the geese, two birds from each treatment were placed in a respiratory chamber as a measurement unit for 4 h in order to determine methane production rate. In experiment II and III, 6- and 7-wk-old male White Roman goslings were used, respectively. Birds were allocated to receive either formic acid or PBS solution injected into the ceca in experiment II. Acetic acid or PBS solution injected into the cecum were used for experiment III. After either the acids or the PBS solution were injected into the cecum, two birds from each treatment were placed in a respiratory chamber as a measurement unit for 3 h; each treatment was repeated 3 times. The results indicated that formic acid inoculated into the oesophagi of geese was quickly converted into methane. Compared with the PBS-injected group, methane production increased by 5.02 times in the formic acid injected group (4.32 vs. 0.86 mg/kg BW/d; p<0.05). Acetic acid injected into the ceca did not increase methane production; conversely, it tended to decrease methane production. The present study suggests that formic acid may be converted to methane in the ceca, and that acetic acid may not be a precursor of methane in the ceca of geese.