Confidence disc for Cauchy distributions

We will construct a confidence region of parameters for $N$ samples from Cauchy distributed random variables. Although Cauchy distribution has two parameters, a location parameter $\mu \in \mathbb{R}$ and a scale parameter $\sigma > 0$, we will infer them at once by regarding them as a single complex parameter $\gamma := \mu +I \sigma$. Therefore the region should be a domain in the complex plane and we will give a simple and concrete formula to give the region as a disc.Comment: 13 pages, 6 figure

Properties of complex-valued power means of random variables and their applications

We consider power means of independent and identically distributed (i.i.d.) non-integrable random variables. The power mean is an example of a homogeneous quasi-arithmetic mean. Under certain conditions, several limit theorems hold for the power mean, similar to the case of the arithmetic mean of i.i.d. integrable random variables. Our feature is that the generators of the power means are allowed to be complex-valued, which enables us to consider the power mean of random variables supported on the whole set of real numbers. We establish integrabilities of the power mean of i.i.d. non-integrable random variables and a limit theorem for the variances of the power mean. We also consider the behavior of the power mean as the parameter of the power varies. The complex-valued power means are unbiased, strongly-consistent, robust estimators for the joint of the location and scale parameters of the Cauchy distribution.Comment: 43 pages; v3: Section 2 for backgrounds and Section 8 for the mixture Cauchy model added. Introduction shortened. To appear in Acta Math. Hun

武庫川女子大学生の鳴尾周辺における行動様式 : 街と大学の共生を目指して

The students of Mukogawa Women\u27s University are a member of Naruo town, and their behavior give various influences to Naruo town from the viewpoint of economic and a town images. And so I did questionnaire investigation to understand their behavior around Naruo area. This is a first stage of study to think about symbiosis of a town and a university

広告コピーの解釈多元性に関する研究 ―美容関連製品のキャッチコピーをケースにして―

Advertising copies that are messages from companies to consumers are having some influences on our lives. Consumers sometimes form product images by interpreting advertising copies. Therefore companies try to tell a message to a consumer as possible precisely. But among advertising copies exist various ways of interpretation. Several consumers may give the same meaning to a given advertising copy, but give different meanings to another advertising copy. We conduct a case study using a framework of meaning dimension（akaoka 1995） and make some considerations about factors affecting a variety of an advertising copy

グループ間におけるブランド意味解釈の構造的考察

A brand possesses multiple meanings. The nature of interpretation that is given to a brand depends on the perspective from which such a brand is viewed. Consequently, instead of providing a clear content meaning of individual brands, it is important to assess the relationship a brand possesses with respect to a number of related brands through a structural interpretation of brand meaning. In this respect, the following form the objectives of this thesis. 1) By using a framework that considers the structural interpretation of brand meaning (Akaoka, 1995), conduct an examination into whether there exist differences in the structural meaning of brands or not as given by groups. 2) From strategic perspective, identify the important factors that affect the structural meaning of a brand

スマートフォンの普及による若者の電車内行動の変化 ―OOH への影響を考察する―

When considering the lifestyle of young people in recent years, a smartphone is an indispensable tool and it can be said to have great influences on their lives. On the other hand, advertising, such as television and internet are abundant in the streets. Especially, OOH（Out Of Home media） such as transportation advertising and outdoor advertising has been the focus of attention. This is because opportunities to see outdoor media have been increasing with an increase of young people’s going-out time. Then what do young people do during going out? On weekdays, young people as students are spending a lot of school hours and the way to the school in the train. In such a situation, it will be said that a hanging poster in a train is an important advertising media. However, we can see young people addicted to a smartphone in a train. They don’t seem to be seeing a hanging poster. It is guessed that using a smartphone has a possibility to give a certain influence on advertising. Therefore, in this thesis, we’ll clarify the following two points. What kind of influence has the spread of smartphones had on young people’s behavior in a train? What kind of influence has the behavioral changes in a train had on advertising in a train