Hong Kong is one of the cities with the largest number of skyscrapers. In this paper, we study the factors that lead to construction accidents on sites by interviewing the relevant parties. In the second part of the research, we extract the causes of accidents from court case report. Last but not least, we include a single case study from one of the largest construction companies in Hong Kong where robotics, drones, three-dimensional printing, virtual reality, wearable robotics and so on are applied on construction sites. It aims to study whether innovative tools can provide solutions to improve safety performance on sites.

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Many nations consider democracy to be an important social value. Nevertheless, does it mean that countries with more democracy are often wealthier? What are the relationships between economic growth and democracy? This research includes 167 countries to study the issue. We employ the data of the democracy index, corruption perception index, inflation, population, number of internet users, balance of trade, foreign direct investment, etc. We have also included sub-indices such as the electoral process and pluralism, functioning of government, political participation, culture, and civil liberties. An innovative part of the paper is how the corruption perception index has been included in our analysis. Besides, principal component analysis is applied to study the relationship between democracy and economic growth. We conclude that it takes democracy a very long time to affect the macro-economy. The fast pace of change in democracy even harms the macro-economy. If the economy reaches a well-developed stage, the economy will gradually transform into a democratic city automatically in the absence of any external pressure.

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