In-pit coal mine personnel uniqueness detection technology based on personnel positioning and face recognition

Since the coal mine in-pit personnel positioning system neither can effectively achieve the function to detect the uniqueness of in-pit coal-mine personnel nor can identify and eliminate violations in attendance management such as multiple cards for one person, and swiping one's cards by others in China at present. Therefore, the research introduces a uniqueness detection system and method for in-pit coal-mine personnel integrated into the in-pit coal mine personnel positioning system, establishing a system mode based on face recognition + recognition of personnel positioning card + release by automatic detection. Aiming at the facts that the in-pit personnel are wearing helmets and faces are prone to be stained during the face recognition, the study proposes the ideas that pre-process face images using the 2D-wavelet-transformation-based Mallat algorithm and extracts three face features: miner light, eyes and mouths, using the generalized symmetry transformation-based algorithm. This research carried out test with 40 clean face images with no helmets and 40 lightly-stained face images, and then compared with results with the one using the face feature extraction method based on grey-scale transformation and edge detection. The results show that the method described in the paper can detect accurately face features in the above-mentioned two cases, and the accuracy to detect face features is 97.5% in the case of wearing helmets and lightly-stained faces.

On Specificity of Politeness —— Contrastive Study of Western and Chinese Concepts of Politeness

Politeness is a social phenomenon, a means to achieve good interpersonal relationships, and a norm imposed by social conventions. Politeness is universal, that is, it can be observed as a phenomenon in all cultures. It is resorted to by speakers of different languages as a means to an end, and it is recognized as a norm in all societies. Despite its universality, the actual manifestations of politeness, the ways to realize politeness, and the standards differ in different cultures. Politeness is, to some extent, culture-specific.

Redressive Strategies for FTA in Oprah Winfrey＇s Talk Show

Redressive strategy plays an important role in talk show. This paper attempts to analyze the application of PP （Politeness Principle） and its redressive strategies in Oprah Winfrey＇s Talk Show from the pragmatic perspective This paper employs two theories, the PP and its redressive strategies （especially redressive strategies）. The analytical data for the present study are collected from Oprah Winfrey＇s Talk Show. In order to understand the PP and its redressive strategies better, this paper will analyze and investigate Oprah Winfrey＇s Talk Show from different perspectives by means of qualitative approach. The purpose of this study is the application of these two theories in the daily talk, and the analysis of how they do FTAs （Face-Threatening Acts）. The success of Oprah Winfrey＇s Talk Show lies in her super language skill and her ability of dealing with some problems. In her talk show Oprah often adopts redressive strategy to save the guest＇s face and keep a congenial atmosphere. The author hopes that this study can help the audience better enjoy and understand talk show program, and maintain the stable and harmonious relationship in real human interaction. The analytical work in the present paper is just a tiny part of politeness, and it is hoped that further studies can be conducted to make more contributions to politeness