Bio-inspired geotechnical engineering: principles, current work, opportunities and challenges

A broad diversity of biological organisms and systems interact with soil in ways that facilitate their growth and survival. These interactions are made possible by strategies that enable organisms to accomplish functions that can be analogous to those required in geotechnical engineering systems. Examples include anchorage in soft and weak ground, penetration into hard and stiff subsurface materials and movement in loose sand. Since the biological strategies have been ‘vetted’ by the process of natural selection, and the functions they accomplish are governed by the same physical laws in both the natural and engineered environments, they represent a unique source of principles and design ideas for addressing geotechnical challenges. Prior to implementation as engineering solutions, however, the differences in spatial and temporal scales and material properties between the biological environment and engineered system must be addressed. Current bio-inspired geotechnics research is addressing topics such as soil excavation and penetration, soil–structure interface shearing, load transfer between foundation and anchorage elements and soils, and mass and thermal transport, having gained inspiration from organisms such as worms, clams, ants, termites, fish, snakes and plant roots. This work highlights the potential benefits to both geotechnical engineering through new or improved solutions and biology through understanding of mechanisms as a result of cross-disciplinary interactions and collaborations

TRY plant trait database – enhanced coverage and open access

Plant traits - the morphological, anatomical, physiological, biochemical and phenological characteristics of plants - determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait‐based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits - almost complete coverage for ‘plant growth form’. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait–environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives

Customizing Employment Arbitration

According to the dispute resolution literature, one advantage of arbitration over litigation is that arbitration enables the parties to customize their dispute-resolution procedures. For example, parties can choose the qualifications of the arbitrator(s), the governing procedural rules, the limitation period, recoverable damages, rules for discovery and the presentation of evidence and witnesses, and the specificity of required arbitrator findings. While some scholars have questioned whether parties to arbitration agreements frequently take advantage of this customization, there is little solid empirical information about the topic. In this Article, we study the arbitration clauses found in a random sample of 910 Chief Executive Officer (“CEO”) employment contracts entered into during the time period from 1995 to 2005 to determine how much customization actually takes place. We find only a small number of instances where fine-grained customization has occurred. Parties pay very little attention to customizing arbitral proceedings in these employment contracts although there is a significant increase in the practice over time. We find this result surprising given that CEO contracts are heavily negotiated documents. Unexpectedly, we find that about half of the arbitration clauses in our contracts carve out a subset of potential claims or types of relief by reserving a right for the parties to seek such relief or file such claims in court. This phenomenon of customizing the circumstances under which parties will use arbitration has received almost no attention in the academic literature to date. In particular, we find that the types of claims carved out for court resolution are those involving a firm’s efforts to protect the value of its information, reputation, and innovation. CEOs and companies in the information technology business are not significantly more likely to carve out such claims, and the use of these carveouts is increasing over time, suggesting that such carveouts are increasingly valuable to all firms. Unfortunately, California court regulation of arbitration clauses in employment contracts has significantly dampened the use of carveouts in contracts between CEOs and their firms located in California. Our data suggest that court efforts to protect employees by scrutinizing the specific carveouts we observe is both unnecessary and destructive