Equitable representation on international benches and the appointment of tribunal members in investor–State dispute settlement: a historical perspective

The lack of diversity in the appointment of tribunal members in investment arbitration has long been subject to criticism. This article analyses the design of adjudicator appointment mechanisms and challenges the mainstream view that investment arbitration is modelled after the structures and procedures of commercial arbitration. Instead, drafters of the Convention on the Settlement of Investment Disputes Between States and Nationals of Other States (ICSID Convention) largely drew inspiration from the Permanent Court of Arbitration and the International Court of Justice. Following this institutional pedigree, the development of the equitable representation requirement is linked to the growing appreciation of the public aspects of the international judicial function. Nevertheless, drafters adopted Article 14(2) of the ICSID Convention mainly to facilitate the performance of the private function of dispute resolution. Through the historical lens, controversies surrounding different approaches for addressing diversity concerns in the ongoing investor–State dispute settlement reform are essentially surface products of deeper disagreements on the private and public aspects of the judicial function

Control of patterns of symmetric cell division in the epidermal and cortical tissues of the Arabidopsis root

Controlled cell division is central to the growth and development of all multicellular organisms. Within the proliferating zone of the Arabidopsis root, regular symmetric divisions give rise to patterns of parallel files of cells, the genetic basis of which remains unclear. We found that genotypes impaired in the TONNEAU1a (TON1a) gene display misoriented symmetric divisions in the epidermis and have no division defects in the underlying cortical tissue. The TON1a gene encodes a microtubule-associated protein. We show that in the ton1a mutant, epidermal and cortical cells do not form narrow, ring-like preprophase bands (PPBs), which are plant-specific, cytoskeletal structures that predict the position of the division plane before mitosis. The results indicate that in the cortex but not in the epidermis, division plane positioning and patterning can proceed correctly in the absence of both a functional TON1a and PPB formation. Differences between tissues in how they respond to the signals that guide symmetric division orientation during patterning might provide the basis for organised organ growth in the absence of cell movements

Space-Invariant Projection in Streaming Network Embedding

Newly arriving nodes in dynamics networks would gradually make the node embedding space drifted and the retraining of node embedding and downstream models indispensable. An exact threshold size of these new nodes, below which the node embedding space will be predicatively maintained, however, is rarely considered in either theory or experiment. From the view of matrix perturbation theory, a threshold of the maximum number of new nodes that keep the node embedding space approximately equivalent is analytically provided and empirically validated. It is therefore theoretically guaranteed that as the size of newly arriving nodes is below this threshold, embeddings of these new nodes can be quickly derived from embeddings of original nodes. A generation framework, Space-Invariant Projection (SIP), is accordingly proposed to enables arbitrary static MF-based embedding schemes to embed new nodes in dynamics networks fast. The time complexity of SIP is linear with the network size. By combining SIP with four state-of-the-art MF-based schemes, we show that SIP exhibits not only wide adaptability but also strong empirical performance in terms of efficiency and efficacy on the node classification task in three real datasets

Radiation damage buildup by athermal defect reactions in nickel and concentrated nickel alloys

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