Effect of the European Union Emission Trading Scheme (EU ETS) on companies: Interviews with European companies

We visited Belgian and Dutch companies that are covered by EU ETS in November 2007, in order to conduct interviews regarding the impact of the scheme and the resultant performance of these companies. The problems of the EU ETS that emerge from this interview are as follows: (1) the redundancy of emission allowance dampens the incentive to reduce the emission of CO2, (2) the allocation scheme fails to consider inter-industrial and/or inter-district fairness, and (3) since the duration of the National Allocation Plan is too short and highly uncertain, it is difficult to implement a long-term reduction investment plan. As European company officers pointed out, the current EU ETS has several problems. However, the recent political debate on the EU ETS seems to have entered a new dimension toward the second period of the National Allocation Plan. For instance, the cap of CO2 emission in the second period has tightened in comparison with the case in the first period, when the allowance excessive. Furthermore, in January 2008, the European Union set the goal of reducing emission by 20% from the 1990 level, by the year 2020. Moreover, the EU intends to introduce the complete auction of emission allowance after the year 2013 excluding the sector that is expected to experience serious leakage problems. The current EU ETS can be regarded as a CO2 reduction scheme in transition. The policy makers of the Japanese government should behold and draw upon the experiences of the European Union in order to implement appropriate policy measures against global warming in Japan.

Expreriment of Seismic Failure of a Long Embankment

Seismic damage to long structures such as river dikes, fill-type dams, and road embankments has been sometimes found to take place at locally limited spot. Local failures of a long embankment during an earthquake are mainly due to heterogeneous ground condition. However there are some cases that local failures were took place even though the ground condition was homogeneous. One of the factors causing local failures under such conditions may be the three dimensional response of the embankment. In this paper, the typical failure of the Kushiro River dike is reported. This paper aims to clarify the influence of three-dimensional response to local failure in embankments. A series of shaking table tests was carried out. The results reveal that local failure can be caused by periodical three dimensional effects during shaking

Beyond Real-world Benchmark Datasets: An Empirical Study of Node Classification with GNNs

Graph Neural Networks (GNNs) have achieved great success on a node classification task. Despite the broad interest in developing and evaluating GNNs, they have been assessed with limited benchmark datasets. As a result, the existing evaluation of GNNs lacks fine-grained analysis from various characteristics of graphs. Motivated by this, we conduct extensive experiments with a synthetic graph generator that can generate graphs having controlled characteristics for fine-grained analysis. Our empirical studies clarify the strengths and weaknesses of GNNs from four major characteristics of real-world graphs with class labels of nodes, i.e., 1) class size distributions (balanced vs. imbalanced), 2) edge connection proportions between classes (homophilic vs. heterophilic), 3) attribute values (biased vs. random), and 4) graph sizes (small vs. large). In addition, to foster future research on GNNs, we publicly release our codebase that allows users to evaluate various GNNs with various graphs. We hope this work offers interesting insights for future research.Comment: Accepted to NeurIPS 2022 Datasets and Benchmarks Track. 21 pages, 15 figure