著者
大島 邦夫 保福 一郎 伊奈川 晃
出版者
一般社団法人 日本応用数理学会
雑誌
日本応用数理学会論文誌 (ISSN:24240982)
巻号頁・発行日
vol.4, no.3, pp.259-274, 1994-09-15 (Released:2017-04-08)
参考文献数
11

In general, the cumulative curves of the bugs agree with Gompertz curve or Logistic curve in many software developments. Using these curves, we will be able to forcast the total number of the bugs when we estimate them within the certain interval. But many experiments show us that those estimates do not coincide with the actual number of bugs. In our experimental data, the se curves usually have more than two steps(a step means an interval or a point where the socond derivative is zero in terms of a continuous function), In this paper, we will study the following four problems ; ・to give the analogy for debugging processes and to find several reasons why such curves appear by means of Gray box method. ・to define a continuous function which is called a modified Gompertz curve that can be expressed by more than two steps. ・to fit the modified Gompertz curve for such a cumulative curve which has more than two steps. ・to forcast total number of bugs on the first step by fitting the modefied Gompertz curve.
著者
銀林 浩
出版者
明治大学
雑誌
明治大学科学技術研究所紀要 (ISSN:03864944)
巻号頁・発行日
no.9, pp.251-260, 1971-01

Generally, it is said that the operations form a group. But this holds only because we neglect the intermediary process of the operation. So we must consider the notion of the changes which include the intermediary process, and call it pseudo-operation. We consider the totality of such pseudo-operations and its algebraic structure. By a pseudo-group, we mean a set G where a law of composition (a, b) → ab and a equivalence relation a〜b are defined and satisfy the following axioms; (1) if a〜b, then ac〜bc and ca〜cb for all c∈G, (2) weak-associative law (ab)c〜a(bc), (3) exisitence of a unit element e such that ae=ea=a for all a∈G, (4) for any a there exists a inverse element a' such that aa'〜a'a〜e. We give several examples of different kinds of pseudo-groups. Then we determine the subsystems of such an algebraic structure and show that an important subsystem is saturated pseudo-subgroup with respect to the equivalence relation. We also determine the normal subsystem such that the quotient set has also the same structure. It is showed that the quotient set of pseudo-group G with respect to the equivalence relation is a group G^^- and that saturated, pseudo-subgroups of G correspond to subgroups, of G.
著者
渡辺 咲子
出版者
立花書房
雑誌
警察公論
巻号頁・発行日
vol.63, no.8, pp.90-97, 2008-08
著者
小野 茂
雑誌
學苑 = GAKUEN (ISSN:13480103)
巻号頁・発行日
vol.874, pp.64-71, 2013-08-01

1 0 0 0 IR 英語と私

著者
小野 茂
出版者
光葉会
雑誌
学苑 (ISSN:13480103)
巻号頁・発行日
no.874, pp.64-71, 2013-08
著者
野中 到
出版者
一般社団法人日本物理学会
雑誌
日本物理学会誌 (ISSN:00290181)
巻号頁・発行日
vol.30, no.7, pp.p489-496, 1975-07
著者
瀬戸 義文
出版者
関西医科大学医学会
雑誌
関西医科大学雑誌 (ISSN:00228400)
巻号頁・発行日
vol.8, no.4, pp.328-336, 1956-12-20 (Released:2013-02-19)
参考文献数
38

A trachoma survey has been made for 2.460 children of 3 primary schools in the T. area; 686 children are found positive and treated on a mass basis. The results obtained are as follows:1. The incidence is higher in household with limited space than in spacious household. It shows no difference between urban water works population and local well water population. It is much lower in household with private bath than that without it. It is also lower, in household with health insurance than that without it.2. Pre-treatment and post-treatment observations made comparatively over a period of 6 months reveal that early stage conjunctival signs (denoted by I. II. and III. types) are easily curable. Treatment at this early stage seems necessary. Some cases belonging to II and III types which are not treated on a mass basis have developed typical trachoma. Typical trachoma(denoted by IV∼X types)are found very difficult to cure.3. The new incidence is higher among the lower class students.

1 0 0 0 IR 荷風の習作

著者
助川 徳是
出版者
学習院大学
雑誌
研究紀要学習院高等科
巻号頁・発行日
no.3, pp.123-113, 1967-09-10

1 0 0 0 IR 啄木と折芦

著者
助川 徳是 Noriyoshi Sukegawa
出版者
福岡女子大学文学部
雑誌
文芸と思想 (ISSN:05217873)
巻号頁・発行日
no.32, pp.1-30, 1968-11
著者
助川 徳是 Noriyoshi Sukegawa
出版者
福岡女子大学文学部
雑誌
文芸と思想 (ISSN:05217873)
巻号頁・発行日
no.31, pp.1-14, 1968-02
著者
助川 徳是
出版者
福岡女子大学
雑誌
香椎潟 (ISSN:02874113)
巻号頁・発行日
vol.19, pp.67-78, 1973-10-15
著者
助川 徳是
出版者
名古屋近代文学研究会
雑誌
名古屋近代文学研究 (ISSN:02890658)
巻号頁・発行日
no.15, pp.81-88, 1997-12
著者
助川 徳是
出版者
至文堂
雑誌
国語と国文学 (ISSN:03873110)
巻号頁・発行日
vol.68, no.4, pp.p64-69, 1991-04

1 0 0 0 書韻の人

著者
助川 徳是
出版者
福岡女子大学
雑誌
香椎潟 (ISSN:02874113)
巻号頁・発行日
vol.37, pp.95-96, 1992-03-30