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I argue that the official story about the collapses of the Twin Towers and building 7 of the World Trade Center, according to which the collapses were caused by fire – combined, in the case of the Twin Towers, with the effects of the airplane impacts – cannot be true, for two major reasons. One reason is that fire has never, except allegedly three times on 9/11, caused the total collapse of steel-frame high-rise buildings. All (other) such collapses have been produced by the use of explosives in the procedure known as “controlled demolition.” The other major problem is that the collapses of all three buildings had at least 11 features that would be expected if, and only if, explosives had been used.

I also show the importance of the recently released of 9/11 Oral Histories recorded by the New York Fire Department. With regard to the Twin Towers, many of the firefighters and medical workers said they observed multiple explosions and other phenomena indicative of controlled demolition. With regard to building 7, many testimonies point to widespread foreknowledge that the building was going to collapse, and some of the testimonies contradict the official story that this anticipation of the building's collapse was based on objective indications. These testimonies further strengthen the already virtually conclusive case that all three buildings were brought down by explosives.

I conclude by calling on the New York Times, which got the 9/11 Oral Histories released, now to complete the task of revealing the truth about 9/11.

In recent years, there have been calls on African countries to develop disaster governance system that recognises the complex nature of disaster events and reflects how their impact can prevent governments from achieving their development objectives. This chapter examines Ghana’s response to the calls by exhuming disaster management policies and the missing links in their implementation. This research was approached by comprehensively reviewing literature related to the subject. The review was supported by field-based interviews involving key stakeholders, some of whom are directly involved with disaster policy planning and implementation. The results show that even though there are several disaster management policies, they are fragmented and found within several institutions, a situation that has created some missing links in their implementation. For instance, poor collaboration and coordination among disaster management institutions hampered efforts towards disaster risk prevention, preparedness and mitigation which are viewed as cross-cutting themes in disaster management. Even more intriguing, critical stakeholders such as community groups who often play important roles in rescue and recovery operations and continue to render humanitarian services after official operations have ended are excluded from the everyday decision-making processes. Empirically, this chapter draws attention to how endogenous interventions that are deeply rooted in the culture of the people that could support well-crafted disaster legislations are often ignored. This chapter concludes that these missing links need to be addressed in order to make Ghana resilient to disaster.

This chapter demonstrates that fixed-effects and first-differences models often understate the effect of interest because of the variation used to identify the model. In particular, the within-unit time-series variation often reflects transitory fluctuations that have little effect on behavioral outcomes. The data in effect suffer from measurement error, as a portion of the variation in the independent variable has no effect on the dependent variable. Two empirical examples are presented: one on the relationship between AFDC and fertility and the other on the relationship between local economic conditions and AFDC expenditures.

Expansion through mergers and acquisitions (M&As) continues to be a viable international strategy utilised by industrial firms. A striking feature of this is that global giant firms lead the M&A wave and generate an unimaginable impact on relatively small and weak firms across sectors and even nations. There seems to be a kind of ‘cascade effect’ between the industrial consolidations in these areas. A combined cascade model developed in this paper explains that, the power imbalance caused by the degree of consolidation of the players within a firm's value system determines the movement and direction of the ‘cascade effect’. With the existence of such effect, M&A will be a mutually interdependent, dynamic, reversible and endless process among industries.

Composite slabs are gaining wide acceptance in many countries as they lend themselves to faster, lighter and more economic in construction buildings. The strength of composite slabs system relies on the bonding action between the concrete and the steel deck, the shear connections and the cross-sectional resistance of steel beam. However, structural behaviour of composite slab is a complex phenomenon and therefore experimental study is often conducted to establish the actual strength of the structure under ultimate load capacity. The main objective of this study is to determine the structural behaviour of composite slab system until ultimate limit state. Total of two specimens are examined in order to obtain failure mechanism of the composite structure under full load capacity. A new design approach of composite slab for roofing system are proposed in this study to construct a composite slab system that can float in the water but not wash away by flood. The lightweight materials in this composite construction are cold-formed steel and foam concrete. The system focuses on the concept of Industrialised building system (IBS) to reduce the cost and construction time.

Wages have been spreading out across workers over time – or in other words, the 90th/50th wage ratio has risen over time. A key question is, has the productivity distribution also spread out across worker skill levels over time? Using our calculations of productivity by skill level for the United States, we show that the distributions of both wages and productivity have spread out over time, as the right tail lengthens for both. We add Organization for Economic Co-Operation and Development (OECD) countries, showing that the wage–productivity correlation exists, such that gains in aggregate productivity, or GDP per person, have resulted in higher wages for workers at the top and bottom of the wage distribution. However, across countries, those workers in the upper-income ranks have seen their wages rise the most over time. The most likely international factor explaining these wage increases is the skill-biased technological change of the digital revolution. The new artificial intelligence (AI) revolution that has just begun seems to be having similar skill-biased effects on wages. But this current AI, called “supervised learning,” is relatively similar to past technological change. The AI of the distant future will be “unsupervised learning,” and it could eventually have an effect on the jobs of the most highly skilled.

Applying a computable general equilibrium model to assess the impact of tariffs between the US and China, Taiwan stands to gain from trade diversion of the trade war between the two largest world economies in the short term.

Initially, Taiwan suffered a minor loss from the sector-specific tariff on steel and aluminum imposed by the US. However, its loss is mitigated after counting counter measures from foreign countries. The cumulated US tariffs and China's retaliations led to trade diversion effect. Taiwan's initial loss from the steel and aluminum tariffs was over compensated by a series of trade war between the US and China.

Under the scenario of the cumulated tariffs of $250 billion of US imports and China's retaliations of $110 billion on US goods, the social welfare, exports, import and trade balance in Taiwan increased. Its terms of trade improved as well. Real wage increases slightly more for unskilled labor than for skilled labor. The short-term effect of the trade war has positive effect on all macro indicators of Taiwan's economy.

On sectoral shift, Taiwan's export will gain the most in precision engineering products ($2,941.6 million), followed by electronics ($310.7 million) and agricultural products ($31.3 million). The negative effects are in sectors such as business services ($58.323 million), other services ($46.9 million), transportation service ($36.6 million), trade service ($25.3 million), and finance service ($24.5 million). Taiwan's total imports will increase by 0.59%, whereas its total export will increase by 0.33%. However, total trade balance still increases by $451.1 million.

The study also finds that Taiwan has a high degree of overlapping export commodities with China in the US market, much higher than most major trading partners for the US, yet its market share for those products in the US is ranged from 1% to 5% only. Moreover, more than 60% of Taiwan's export to the US is in intermediate goods which have less product differentiation than those in final consumption goods. These two factors will provide an opportunity for Taiwan to exploit the US market.

Though the short-term effect of trade war is positive, Taiwan needs to have a long-range planning amid the external shocks. Policy implications for Taiwan are to map out a cosmopolitan view of its geo-strategy by diversifying outward foreign direct investment and trade destinations. It needs to reduce the “systemic risk” of relying on single market in China which is vulnerable to the uncertainty in the US–China relations. If the trade war lasts too long, Taiwan would need to reevaluate its triangular trade-investment nexus with China and the US as well as its role in the global supply chain.