Co-operation, Contestation and Complexity in Post-Conflict Security Sector Reform

Security Sector Reform (SSR) remains a key feature of peacebuilding interventions and is usually undertaken by a state alongside national and international partners. External actors engaged in SSR tend to follow a normative agenda that often has little regard for the context in post-conflict societies. Despite recurrent criticism, SSR practices of international organisations and bilateral donors often remain focused on state institutions, and often do not sufficiently attend to alternative providers of security or existing normative frameworks of security. This article provides a critical overview of existing research and introduces the special issue on “Co-operation, Contestation and Complexity in Post-Conflict Security Sector Reform”. We explore three aspects that add an important piece to the puzzle of what constitutes effective SSR. First, the variation of norm adoption, norm contestation and norm imposition in post-conflict countries that might explain the mixed results in terms of peacebuilding. Second, the multitude of different security actors within and beyond the state which often leads to multiple patterns of co-operation and contestation within reform programmes. And third, how both the multiplicity of and tension between norms and actors further complicate efforts to build peace or, as complexity theory would posit, influence the complex and non-linear social system that is the conflict-affected environment

Twenty-first century brain banking. Processing brains for research: the Columbia University methods

Carefully categorized postmortem human brains are crucial for research. The lack of generally accepted methods for processing human postmortem brains for research persists. Thus, brain banking is essential; however, it cannot be achieved at the cost of the teaching mission of the academic institution by routing brains away from residency programs, particularly when the autopsy rate is steadily decreasing. A consensus must be reached whereby a brain can be utilizable for diagnosis, research, and teaching. The best diagnostic categorization possible must be secured and the yield of samples for basic investigation maximized. This report focuses on integrated, novel methods currently applied at the New York Brain Bank, Columbia University, New York, which are designed to reach accurate neuropathological diagnosis, optimize the yield of samples, and process fresh-frozen samples suitable for a wide range of modern investigations. The brains donated for research are processed as soon as possible after death. The prosector must have a good command of the neuroanatomy, neuropathology, and the protocol. One half of each brain is immersed in formalin for performing the thorough neuropathologic evaluation, which is combined with the teaching task. The contralateral half is extensively dissected at the fresh state. The anatomical origin of each sample is recorded using the map of Brodmann for the cortical samples. The samples are frozen at −160°C, barcode labeled, and ready for immediate disbursement once categorized diagnostically. A rigorous organization of freezer space, coupled to an electronic tracking system with its attached software, fosters efficient access for retrieval within minutes of any specific frozen samples in storage. This report describes how this achievement is feasible with emphasis on the actual processing of brains donated for research

Mechanisms of waterlogging tolerance in wheat - a review of root and shoot physiology

We review the detrimental effects of waterlogging on physiology, growth and yield of wheat. We highlight traits contributing to waterlogging tolerance and genetic diversity in wheat. Death of seminal roots and restriction of adventitious root length due to O2 deficiency result in low root:shoot ratio. Genotypes differ in seminal root anoxia tolerance, but mechanisms remain to be established; ethanol production rates do not explain anoxia tolerance. Root tip survival is short-term, and thereafter, seminal root re-growth upon re-aeration is limited. Genotypes differ in adventitious root numbers and in aerenchyma formation within these roots, resulting in varying waterlogging tolerances. Root extension is restricted by capacity for internal O2 movement to the apex. Sub-optimal O2 restricts root N uptake and translocation to the shoots, with N deficiency causing reduced shoot growth and grain yield. Although photosynthesis declines, sugars typically accumulate in shoots of waterlogged plants. Mn or Fe toxicity might occur in shoots of wheat on strongly acidic soils, but probably not more widely. Future breeding for waterlogging tolerance should focus on root internal aeration and better N-use efficiency; exploiting the genetic diversity in wheat for these and other traits should enable improvement of waterlogging tolerance.Fil: Herzog, Max. Universidad de Copenhagen; Dinamarca. University of Western Australia; AustraliaFil: Striker, Gustavo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. University of Western Australia; AustraliaFil: Colmer, Timothy D.. University of Western Australia; AustraliaFil: Pedersen, Ole. Universidad de Copenhagen; Dinamarca. University of Western Australia; Australi