基于高光谱技术对一幅清代画信息提取研究

高光谱仪作为一种无损检测方法,其"图谱合一"的特性使很多在正射影像上无法区分的类别变得可分。因此,本研究以清代张士保《论道图》为例,利用高光谱相机采集影像,经过最小噪声分离变换、主成分变换、掩膜等处理对画作的墨线进行了提取,实现了图像增强效果,并且发现了两处人眼无法识别的隐含信息。图像增强及隐含信息的发现对书画鉴定、修复提供重要依据,并开拓了新视野。     

‘Con il volere di Dio’: Bernardo Provenzano and religious symbolic ritual

This article adopts an interdisciplinary approach to analyse the symbolic religious language utilised by mafia boss Bernardo Provenzano in his social interactions with the lower echelons of the Sicilian mafia. When Provenzano assumed control of Cosa Nostra in the 1990s, he inherited an organisation severely diminished by a decade of internal conflicts, violence and the arrest of numerous leaders. The article argues that religious performative behaviour and language were used by the mafia boss to establish his leadership over Cosa Nostra, reshape its internal structure, and thereby revitalise an organisation in apparent terminal decline.     

The Effect of Persuasive Messages on Policy Problem Recognition

Prior theories of individual behavior in recognizing public problems have centered on the role of policy entrepreneurs; institutional effects; information; and cultural, political, and social pressures. Our extension of these theories suggests that policy problem recognition is an attitudinal evaluation process. If the information is considered valid and the new attitude is negative in valence, then a policy problem is recognized. To test this theory, we use an embedded experiment in a national survey to measure the effect of persuasive messages on the concern for global warming. We find that the negativity of the message and the credibility of the source of the message both affect the level of increase in concern for global warming. Further, the impact of the message from the source is conditional based upon the recipient's ideology. This suggests that policy problem recognition is attitudinal and thus incorporates both analytical and affective components.     

Children, ‘healthy’ food,school and family: the ‘[n]ot really’ outcome of school food messages

ABSTRACT

This paper draws on a multi-method study with 50 families in Victoria, Australia. Primary school children were asked about food knowledge from school and whether they felt motivated to bring knowledge home. Generally, children and parents felt school food messages are unclear, contradictory and not relevant to them and this reduced the likelihood of messages coming home from school. We identify a critical difference in how families thought about healthy eating and food practices at home and the framework of school messages. Families focused on children’s eating in a pragmatic way, infused with nurturance as well as concern. We argue their practices can be viewed as a form of relational consumption (Lindsay and Maher 2013. Consuming Families: Buying, Making, Producing Family Life in the Twenty-First Century. New York: Routledge.) where food is part of the everyday exchange of love and care. A disjunction exists between familial relational approaches and the regulatory framework of school food messages that impacts how messages move between these spaces. Attention to relational aspects of food consumption at school might allow for a more valuable exchange between family and schools that supports family endeavours to feed children well.