Sol-gel-hydrothermal growth of oxide thin films at low temperatures

Lead zirconate titanate (PZT) (Pb(Zr_0.52Ti_0.48)O₃) and barium titanate (BaTiO₃) thin films have been successfully prepared using a novel sol-gel- hydrothermal (SG-HT) technique at low temperatures, which involves a combination of the conventional sol-gel process and a hydrothermal method. Highly (111)-oriented PZT thin films with a single perovskite phase and polycrystalline BaTiO thin films with well developed crystallites were obtained at a processing temperature as low as 160⁰C. The microstructural characteristics demonstrate that the SG-HT-derived PZT and BaTiO₃ thin films with good crystallinity and surface morphology are converted from the amorphous phase to the desired perovskite phase on platinum-coated and bare silicon substrates at a low processing temperature of 100-200 C. These results suggest that the SGHT technique, which is of great significance because of its low processing temperature, will become a potential and promising process for fabricating PZT, BaTiO₃ and other oxide thin films.     

贪婪:态度、动机与决策机制

贪婪是人性的重要特点之一,也是哲学、经济学等领域经常讨论的话题.本文首先梳理了贪婪的概念,并将问题聚焦在对于物质的贪婪上.然后总结了贪婪的特点,并提出贪婪的定义.接着阐述了情境因素如何影响个体对贪婪的态度,以及贪婪动机如何影响自利行为.贪婪决策是个体决定是否做出贪婪行为的心理过程,受到自我意识和情绪的影响.贪婪决策过程模型整合了控制性、自动化两类加工方式,阐释了自利倾向与道德自觉相互作用的机制.本文对以上内容逐次进行讨论,并提出了未来研究的方向.     

Engaging the motor system with masked orthographic primes: A kinematic analysis

We report two experiments in which participants categorized target words (e.g., BLOOD or CUCUMBER) according to their canonical colour of red or green by pointing to a red square on the left or a green square on the right. Unbeknownst to the participants, the target words were preceded by the prime words “red” or “green”. We found that the curvature of participants’ pointing trajectories was greater following incongruent primes (green–BLOOD) than it was following congruent primes, indicating that individuals initiated a response on the basis of the prime and then corrected that response mid-flight. This finding establishes that the processing of masked orthographic stimuli extends down to include the formulation of an overt manual response.     

Immigration and Democratic Principles: On Carens’ Ethics of Immigration

Carens has done more than any other political theorist or philosopher to develop the normative perspective of prospective migrants from within the liberal democratic tradition, but he has not sufficiently engaged with the other side of the argument – in particular, with the value of political community and the principle of collective self‐determination. What is at stake for the immigrant‐receiving country that might justify its claim to control immigration? I first examine Carens’ theory of social membership and its connection to political community. I then discuss his method of ‘political theory from the ground up’ and his interpretation of democratic principles. I conclude with a discussion of the principle of collective self‐determination.     

Aging Koreans' perceived conflicts in relationships with their offspring as a function of age, gender, cohabitation status, and marital status.

The Youn Scale was used to assess aging Koreans' perceived conflicts in relationships with their adult offspring. The sample consisted of 623 elderly Koreans between the ages of 55 and 84 years. Results indicated that aging Koreans experienced significantly more conflicts in their relationships as they grew older. There were also differences in the perceptions of problems in relationships with their offspring between those who lived together with their adult children and the those who did not, and also between those who were married and those who were single. The findings imply that aging Koreans want to have qualitatively better (i.e., warmer and closer) relationships with their offspring, regardless of their bereavement status and cohabitation status.     

Effects of priming self‐construals on self‐evaluations: Cultural game player perspective

This study examined the validity of situational view on culture‐specific behaviours focusing on self‐evaluation. Two experiments with American students as samples were conducted to examine whether priming their self‐construals would affect individuals' self‐evaluation. In Experiment 1, the participants' self‐evaluation was compared across different conditions of primed self‐contruals. In Experiment 2, the participants were split into 2 groups based on their initial default self‐consturals and, the self‐evaluations were compared across the 2 groups after priming self‐contruals. The results demonstrated that although the participants' self‐evaluation was initially in accord with their default self‐construal, it changed into accord with the primed self‐construals. The findings supported the proposed cultural game player view. Implications on situational view of self‐evaluation are also discussed.     

Conflict Minerals in Electronic Systems: An Overview and Critique of Legal Initiatives

The Democratic Republic of Congo has vast natural resources, many of which are regularly exploited by the electronics industry. Unfortunately, in addition to these resources, there are widespread human rights abuses committed by armed groups entrenched in the eastern part of the Democratic Republic of Congo. These armed groups are using profits from these minerals as a source of funding. Their human rights abuses have led to a growing humanitarian interest in the region and prompted the international community to action. This paper explores the conflicts in the Democratic Republic of Congo, provides an understanding of the link between human rights abuses and conflict minerals, and interprets and critiques the legal actions of the international community.