Published papers

The current trade turmoil is not limited to negative economic effects stemming from the series of recent trade measures erected by the United States as par t of the escalating U.S.–China trade war. The more serious issue that will unfold in the middle to long term is the potential collapse of the rule-based trading regime. The weakening of the multilateral trading system centered by the World Trade Organization (WTO) seems to continue. East Asia has been one of the largest beneficiaries of the rule-based trading regime in its course of extending and deepening international production networks and must now take proactive moves to defend and preserve this stable economic environment. Two crucial tasks in the preservation of the WTO are effor ts to maintain the functionality of the dispute settlement mechanism and the revival of the WTO as a forum for future trade negotiations. At the same time, East Asia must develop a network of mega–free trade agreements (FTAs) to par tially supplement a possible loss of the multilateral framework.

Cambodia's biomass consumption is the most dominant energy source at residential sector, and its use is mainly for cooking and heating which could affect health due to indoor air pollution. The biomass is mainly sourced from wood cutting and forest-encroachment that could impact the environment due to reduction of forest at considerable scale. By using the data 2015 of Cambodia Socio-Economic Survey, the study investigates the impacts of electricity consumption on household welfare, such as earnings and the school performance of children in the households, and further to investigate its impacts on the environment. The study found that household's access to electricity with ability to spend on electricity consumption contributes to the positive household welfare effects and environment via a reduction of biomass consumption, and the more household spends on biomass, the more they are prone to sickness of lung problem. The study also confirmed the important role of human capital formation for the positive impact on the welfare and the environment. These findings lead to policy implications that would improve affordable access to electricity to ensure that all households can use electricity for their basic needs and productivity, and also to reduce the negative effects on environment.

This paper investigates the impacts of COVID-19 on international production networks in machinery sectors by shedding light on negative supply shocks, negative demand shocks, and positive demand shocks. Specifically, we examined changes in trade in the trade-fall periods amid COVID-19 in 2020 using Japan’s machinery trade at the most disaggregated level and decomposed them into two intensive margins (i.e., the quantity effect and the price effect) and two extensive margins (i.e., the entry effect and the exit effect). Our empirical results show that trade relationships for par ts and components were robust even amid COVID-19 and that international production networks in machinery sectors were almost intact. They also demonstrate that COVID-19 brought positive demand shocks for specific products with special demand due to its nature in addition to negative supply shocks and negative demand shocks, which par tially explains heterogeneous effects not only among sectors but also among products in the same sector. As of October 2020, Japan’s machinery trade seems to have mostly recovered.

A well-developed services supply chain is crucial for regional integration. In the context of East Asia and ASEAN, it will allow countries at varying development stages to effectively participate in regional as well as global supply chains. This paper examines services from a supply chain perspective and discusses policy implications for liberalization of the sector in East Asian economies. In particular, the study focuses on global value chain (GVC) activities for services that are independent of linkages to the manufacturing sector.

The preference utilization ratio, i.e., the share of preferential imports out of total imports, has been a popular indicator for measuring the usage of preferential tariffs vis-à-vis tariffs on a most-favored-nation basis. A crucial shortcoming of this measure is the data requirements, particularly for data on imports classified by tariff schemes, which are not available in most countries. This study proposes another measure for preference utilization, termed the “tariff exemption ratio.” This measure is a good proxy for the value of offered preferences by each importing country to the rest of the world. Importantly, it can be computed by employing only publicly available data, such as those provided by the World Development Indicators, for its computations. We can thus calculate this measure for many countries for an international comparison. Our finding is that tariff exemption ratios differ widely across countries.

We conducted a standard gravity exercise using worldwide disaggregated trade data to shed light on the influence of digital technologies on network trade. We found that growing investment in industrial robots in relatively lagging economies, together with imported digitally deliverable services, is enhancing bilateral network trade flows in East Asia, but not necessarily in other parts of the world. This suggests that exploring complementarities between machines and human resources in production blocks supported by better service-link connectivity may allow newly developed economies to retain and expand the international division of labor.

In this paper, we explore the possible policy responses to the COVID-19 pandemic shock as well as the related economic (financial crisis) shocks on trade and global value chains (GVC) in East Asia. We find that regional policy coordination is critical to mitigate and isolate the pandemic shock. It is important to identify the pandemic events early to flatten the pandemic curve at the national and regional level. This supports a recent study by the World Bank (2020), which highlights the importance of early mitigation policies during the pandemic shock. The cost of the pandemic and economic shocks will increase significantly when several countries in the region experience the pandemic shock concurrently. In this case, flattening the regional pandemic curve becomes important. The results also indicate the need for greater coordination in East Asia to mitigate the pending economic shock in terms of unemployment, corporate bankruptcy and financial market fragility. The paper also highlights that the stability of the GVC network is critical during the pandemic in terms of hedging the risk of disruptions to the procurement of critical medical and health products as well as maintaining service linkages to manufacturing, such as the logistics sector. Regional policy coordination and the stability of GVC will be valuable in the post-pandemic recovery of the region.

The power generation mix of the Association of Southeast Asian Nations (ASEAN) is dominated by fossil fuels, which accounted for almost 80% in 2017 and are expected to account for 82% in 2050 if the region does not transition to cleaner energy systems. Solar and wind power are the most abundant energy resources but contribute negligibly to the power mix. Investors in solar or wind farms face high risks from electricity curtailment if surplus electricity is not used. Employing the policy scenario analysis of the energy outlook modelling results, this paper examines the potential scalability of renewable hydrogen production from curtailed electricity in scenarios of high share of variable renewable energy in the power generation mix. The study found that ASEAN has high potential in developing renewable hydrogen production from curtailed electricity. The study further found that the falling cost of renewable hydrogen production could be a game changer to upscaling the large-scale hydrogen production in ASEAN through policy support. The results implied a future role of renewable hydrogen in energy transition to decarbonize ASEAN’s emissions.

This paper provides a quantitative analysis of the new EU-Japan Economic Partnership Agreement (EPA), the biggest bilateral deal that both the EU and Japan have concluded so far. It employs a generalized variant of the Eaton–Kortum (2002) model, featuring multiple sectors, input-output linkages, services trade, and non-tariff barriers (NTBs). It uses the results of an econometric ex post analysis of a related existing FTA, the one between the EU and Korea, to approximate the expected reductions in the costs of NTBs. This approach yields long-run welfare effects for Japan of about 18 bn USD per year (0.31% of GDP) and of about 15 bn USD (0.10%) for the EU. On average, the agreement does not appear to harm third countries. 14% of the welfare gains inside the EPA stem from tariffs, the remaining 86% from NTB reform, and the services sector account for more than half. In the EU, value added in the agri-food sector goes up most, while in Japan the manufacturing and services sectors gain.

International production networks (IPNs) in East Asia are facing two challenges, i.e., COVID-19 and the US-China confrontation. COVID-19 has generated three kinds of shocks on IPNs: negative supply shocks, positive demand shocks, and negative demand shocks. IPNs have adequately managed these shocks thus far and have been strengthening the relative position of Factory Asia in the world. Nevertheless, the US-China confrontation and its consequences of weakening the rule-based trading regime have enhanced uncertainties in the operations of IPNs. The decoupling pressure may come from either the US or China for middle powers in-between, even with the US Biden Administration. This study posits that the construction of a mega-free trade agreement (FTA) network may partially reduce policy risks and help form a pro-trade middle-power coalition.

This study investigates the impacts of energy insecurity on household welfare in Cambodia. The notion of energy insecurity is not well understood in the literature as well as in local contexts. This study defines household energy insecurity as the status quo derived from the interplay of inadequate and insufficient energy consumption that prevents households from meeting basic energy needs. The notion of energy insecurity can only be well understood by investigation in the local context as it varies from place to place. Households facing insufficient energy consumption may forgo many other opportunities. Once energy security has been defined in the Cambodian context, the study employs multiple regression models using the Cambodia Socio-Economic Survey Data (2015) to investigate the impacts of household energy insecurity. The study confirmed that energy insecurity has enormous negative impact on welfare of the households, with a further negative impact on the human capital formation of the children. The findings will lead to policy implications to improve household energy security, and thus impact economic, social, and environmental development.

This paper extends the conceptual framework of "unbundling" proposed by Baldwin (2016), and tries to provide a starting point for reorganizing development strategies of ASEAN member states (AMS). While AMS have largely been successful in utilizing the mechanics of the second unbundling with a reduction in communication costs, there still exists a lot of room for exploiting its benefits. In addition, a new wave of the third unbundling, which comes with a reduction in face-to-face costs, has already arrived at ASEAN, and AMS must start incorporating it into their development strategies.

This paper applies the conceptual framework of ‘unbundling’, proposed by Baldwin (2016), to assess the value chain connectivity in Indonesia. Indonesia is a geographically large country, and three different levels of unbundling co-exist. The first unbundling aligns with the industry-wise international division of labour in plantation agriculture, mining, and labour-intensive industries; the second aligns with where the task-wise international division of labour dominates mainly in machinery industries; and the third aligns with where face-to-face costs are reduced by the digital economy. We argue that the further upgrading of unbundling and the more effective use of advanced piecemeal technologies among different levels of unbundling will enable Indonesia to achieve rapid and equitable economic development. Overcoming distance is key for effectively using the mechanics of unbundling. We propose that three key elements are be promoted: enhancement of connectivity, development of the service sector, and improvement of the policy environment.

The world trading system has been remarkably successful in many respects but is now under great strain. The causes are deep-seated and require a strategic response. The future of the system depends critically on reinvigorating the WTO and policy change in the largest trading nations. Important measures are required to sustain the multilateral trading system, and urgent action is needed to avoid a scenario where the system fragments. The worst scenarios will disrupt global trade and see a world which splinters into large trading blocs (most likely centered on China, the European Union and the United States) and where trade relations are based to a large extent on relative power instead of rules. In such a world the smallest players – especially those whose trade is least covered by bilateral or regional agreements – will be at the greatest disadvantage. All countries will incur enormous costs only to try and reinvent a system that is already in place today under the WTO.

East Asian countries signed the Regional Comprehensive Economic Partnership Agreement (RCEP) in November 2020. This paper demonstrates the importance of ASEAN centrality in East Asian economic integration and makes a preliminary assessment of the agreement in terms of the four expected roles: liberalization, rulemaking, reducing policy risks, and forming a pro-trade middle power coalition. The comparison with the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) reveals the strengths and weaknesses of RCEP. The paper emphasizes the importance of dynamic aspects of mega-FTAs after being in effect and claims that RCEP must be further developed as an evolving agreement.

Many people have a vague notion that the room for expanding international production networks is almost exhausted and that therefore international trade has slowed down since the recovery from the great trade collapse. This paper presents evidence against such a belief in the East Asian context by classifying finely disaggregated trade data based on the stages of the production process. The trade slowdown was attributed mainly to sluggishness of trade in primary goods and processed raw materials. In contrast, East Asian trade in manufactured parts and components and the assembled end-products within production networks continued to expand steadily.

The Association of Southeast Asian Nations (ASEAN) faces tremendous challenges regarding the future energy landscape and how the energy transition will embrace a new architecture— including sound policies and technologies to ensure energy access together with affordability, energy security, and energy sustainability. Given the high share of fossil fuels in ASEAN’s current energy mix (oil, coal, and natural gas comprise almost 80%), the clean use of fossil fuels through the deployment of clean technologies is indispensable for decarbonizing ASEAN’s emissions. The future energy landscape of ASEAN will rely on today’s actions, policies, and investments to change the fossil fuel-based energy system towards a cleaner energy system, but any decisions and energy policy measures to be rolled out during the energy transition need to be weighed against potentially higher energy costs, affordability issues, and energy security risks. This paper employs energy modelling scenarios to seek plausible policy options for ASEAN to achieve more emissions reductions as well as energy savings, and to assess the extent to which the composition of the energy mix will be changed under various energy policy scenarios. The results imply policy recommendations for accelerating the share of renewables, adopting clean technologies and the clean use of fossil fuels, and investing in climate-resilient energy quality infrastructure.

Technology transfers are important channels for firms in developing countries to get access to new technology and initiate innovation. This article examines the geographical pattern of technology transfers in the form of buyer-provided training in domestic and international production networks. Our unique buyer-supplier network data in four countries in Southeast Asia allow us to directly observe the buyer-supplier relationship as well as the existence of inter-firm provision of training for product/process innovation in order to investigate the geographical structure of knowledge acquisition, dissemination, and aggregation among local and non-local firms. The empirical analysis finds the following: (1) the probability of having training provided by the main buyer presents a U-shaped quadratic pattern with respect to the geographical distance between the respondent firms and the main buyers. The geographical proximity to the main buyer seems to be particularly important for local firms. (2) The training provision is likely for both local and non-local firms when the main buyer is a multinational located in the same country. (3) The probability of having training from the main buyer is high when the main buyer conducts R&D. (4) Both local and non-local firms that have training provided by their main buyers are likely to provide training to their main suppliers. (5) In the case of non-local firms, product innovation with production partners is more likely when they have upstream/downstream training. However, such links seem to be weaker in the case of local firms.