Floating Islands, Frontiers, and Other Boundary Objects on the Edge of Oceania’s Futurity

2021 ◽  
Vol 94 (1) ◽  
pp. 123-144
Author(s):  
Alexander Mawyer

Technological advances have challenged numerous social and political domains over recent decades, including the materialities and imaginaries of islands and islandness in Oceania. Since the early 2000s, a plurality of schemes, discourses, politics, anxieties, and hopes have coalesced around the possible construction of artificial islands, referred to as floating islands, floating nations, floating cities, or seasteads, depending on the new islands’ imagined purposes and peoples. If achieved, these new, de novo, islands will contribute to an ongoing regional geopolitical remaking that requires urgent attention. However, in examining floating islands as boundary objects, this article suggests that, even if never realized, they are exceptional points of focus for perceiving and reflecting on the uncanny, disruptive character of capital at work in the contemporary Pacific Islands in tension with multi-state regional policy initiatives for collective governance and sustainable ocean management. Moreover, this article argues that floating islands are not the only “artificial islands” producing tensions between communities, states, and international ocean governance frameworks. Deep-sea concessions for mineral exploitation, the spatialization of high-seas fishing rights, and large- and small-scale conservation zones similarly raise issues of the fixity or fluidity of territoriality, sovereignty, rights of access and restriction to common or uncommon marine spaces and their resources, as well as conflicting imaginaries and ideologies around the ocean and Oceania as an open frontier.

Author(s):  
Paulo R. Pezzuto ◽  
Caroline Schio ◽  
Tito C.M. Almeida

In Florianópolis, southern Brazil, the venerid clam Anomalocardia brasiliana has supported subsistence and small-scale commercial fisheries for decades. The introduction of a hand dredge (gancho) since 1987 led to the development of a significant fishery supplying both local and regional shellfish markets. In 1992 one of the main fishing areas in the region was designated as the first Brazilian Marine Extractive Reserve (Pirajubaé RESEX), a federal form of governance intended to promote sustainable exploitation of natural resources by assigning exclusive fishing rights to traditional users. However, excessive fishing effort, institutional shortcomings and lack of a negotiated management plan have resulted in the overexploitation of the species since 2000. This study was aimed at evaluating the efficiency and selectivity of the hand dredge currently in use at the RESEX, through a field experiment conducted in October 2006. Quantitative samples of A. brasiliana were collected before and after dredging 15 experimental plots. Additional samples were obtained inside the dredge (catch) and respective cover cod-end (discard) for selectivity analysis. A single haul of the hand dredge can dislocate up to 76% of the individuals present in the sediment irrespective of their size, and retain up to 69% of the commercial-sized organisms. The gear has a knife-edge selection pattern, which enables the use of the minimum spacing between the iron bars of the dredge's basket as an effective management tool.


2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Yu Chen ◽  
Yixin Zhang ◽  
Amy Y. Wang ◽  
Min Gao ◽  
Zechen Chong

AbstractLong-read de novo genome assembly continues to advance rapidly. However, there is a lack of effective tools to accurately evaluate the assembly results, especially for structural errors. We present Inspector, a reference-free long-read de novo assembly evaluator which faithfully reports types of errors and their precise locations. Notably, Inspector can correct the assembly errors based on consensus sequences derived from raw reads covering erroneous regions. Based on in silico and long-read assembly results from multiple long-read data and assemblers, we demonstrate that in addition to providing generic metrics, Inspector can accurately identify both large-scale and small-scale assembly errors.


Author(s):  
Gang Zhang ◽  
Xiangxuan Huang ◽  
Wenbo Liao ◽  
Shimin Kang ◽  
Mingzhong Ren ◽  
...  

Polychlorinated dibenzo-p-dioxin and dibenzofuran (PCDD/Fs) emissions from basic small-scale waste incinerators (SWI) may cause health risks in nearby people and are thus subject to stringent regulations. The aim of this study was to evaluate PCDD/F emission and reduction of a basic SWI in the absence of air pollution controls (APCs). The results indicated that the stack gas and fly ash presented average PCDD/F levels and emission factors of 3.6 ng international toxic equivalent (I-TEQ)/Nm3 and 189.31µg I-TEQ/t and 6.89 ng I-TEQ/g and 137.85µg I-TEQ/t, respectively, much higher than those from large municipal solid waste incinerators (MSWI). PCDD/Fs congener fingerprints indicated that de novo synthesis played a dominant role in the low-temperature post-combustion zone and increased the presence of high-chlorine substituted congeners. On the basis of the emission factor 327.24 µg I-TEQ/t-waste, approximately 3000 g I-TEQ dioxins might be generated in total through basic SWIs and open burning. After refitting an SWI by adding activated carbon injection with a bag filter (ACI+BG), the PCDD/F emissions decreased to mean values of 0.042 ng I-TEQ/Nm3, far below the standard of 0.1 ng I-TEQ/Nm3, and the removal efficiency reached 99.13% in terms of I-TEQ. Therefore, it is entirely feasible to considerably reduce PCDD/F emissions by refitting basic SWI, which is positive for the future development of rural solid waste (RSW (RSW) disposal by SWI.


2004 ◽  
Vol 38 (4) ◽  
pp. 61-67 ◽  
Author(s):  
Porter Hoagland ◽  
Andrew R. Solow

Two recent expert panels, the U.S. Commission on Ocean Policy and the Pew Oceans Commission, have focused on analyzing and proposing solutions to the ocean management problems of the United States. Both panels have come up with concrete and detailed recommendations for mitigating governance problems that have plagued this field for decades. Many of the recommendations are specific and useful, and the panels have provided a service to the nation in constructing them. In this article, we consider the sets of recommendations pertaining specifically to institutions of regional ocean governance. Unlike the majority of recommendations, which are very helpful, we argue that the proposals from both panels for regional ocean governance are not well-developed. We formulate a critique along three lines. First, to be effective, regional institutions must be tailored to the scale of specific problems and focused on those problems. Second, the political entities that comprise the membership of a regional institution must have tangible incentives to participate in decision making. Third, the right to use the resources of those areas of the ocean under U.S. jurisdiction belong to the nation, not to any particular region. We conclude that the nation must pay attention to the lessons of other attempts at regional governance, otherwise it may end up with a system of management that seems simple in concept but merely symbolic in practice.


2020 ◽  
Vol 190 ◽  
pp. 00032
Author(s):  
Rapha Nichita Kaikatui ◽  
Adik Putra Andika ◽  
Vinsenius Letsoin ◽  
Paulus Mangera ◽  
Damis Hardiantono ◽  
...  

Energy demand increases in line with rapid technological advances. Research on the harvesting of renewable energy continues to be done to make efforts to convert heat energy, which is very abundant in our daily environment. Thermoelectric technology is an alternative source in answering energy needs and can produce energy on a large and small scale. Thermoelectric technology works by converting heat energy into electricity directly, or from electricity to cold. This research presents an experimental study conducted to find out the thermoelectric characteristics of the TEC in the reversal function, with heating and cooling tests on each side of the TEC type thermoelectric element, carried out to obtain the voltage value as the electrical potential generated from this element. The result is thermoelectric potential to generate DC electricity but is very limited in the function of maintaining a heat source on the hot side element. This research then proposes thermal metamaterial that functions as a collector of thermal energy in the method of converting thermal energy into DC electrical energy for the application of low power consumption communication systems.


Marine Policy ◽  
2018 ◽  
Vol 88 ◽  
pp. 315-322 ◽  
Author(s):  
Johann D. Bell ◽  
Joelle Albert ◽  
George Amos ◽  
Christopher Arthur ◽  
Michel Blanc ◽  
...  

Author(s):  
John C. Trinder

A summary is presented of the results of questionnaires sent to mapping agencies in Oceania, covering Australia, New Zealand and the Pacific Island countries, to investigate the status of mapping in those countries. After World War II, the Australian Federal Government funded the initial small scale mapping of the whole country leading to increased percentages of map coverage of Australia. Mapping at larger scales is undertaken by the states and territories in Australia, including cadastral mapping. In New Zealand mapping is maintained by Land Information New Zealand (LINZ) at 1:50,000 scale and smaller with regular updating. The results of the questionnaires also demonstrate the extent of map coverage in six Pacific Islands, but there is little information available on the actual percent coverage. Overall there are estimated to be an increases in the percentages of coverage of most map scales in Oceania. However, there appear to be insufficient professionals in most Pacific Island countries to maintain the mapping programs. Given that many Pacific Island countries will be impacted by rising sea level in the future, better mapping of these countries is essential. The availability of modern technology especially satellite images, digital aerial photography and airborne lidar data should enable the Pacific Island countries to provide better map products in future, but this would depend on foreign aid on many occasions.


2021 ◽  
Author(s):  
Kevin F Hoffseth ◽  
Emily Busse ◽  
Michelle Lacey ◽  
Mimi C Sammarco

Bone is an essential, healing structure in vertebrates that ensures daily function. However, the regenerative capacity of bone declines with age, compromising quality of life in the elderly and increasing cost of care. Here, for the first time, the elasticity of regenerated bone in a mouse digit amputation model is evaluated in order to better investigate biomechanics of skeletal regeneration. Amputation of the distal one third of the digit (third phalangeal element P3) results in de novo regeneration of the digit, where analyzing the structural quality of this regenerated bone is a challenging task due to its small scale and triangular shape. To date, the evaluation of structural quality of the P3 bone has primarily focused on mineral density and bone architecture. This work describes an image-processing based method for assessment of elasticity in the whole P3 bone by using microcomputed tomography-generated mineral density data to calculate spatially discrete elastic modulus values across the entire P3 bone volume. Further, we validate this method through comparison to nanoindentation-measured values for elastic modulus. Application to a set of regenerated and unamputated digits shows that regenerated bone has a lower elastic modulus compared to the uninjured digit, with a similar trend for experimental hardness values. This method will be impactful in predicting and evaluating the regenerative outcomes of potential treatments and heightens the utility of the P3 regenerative model.


2021 ◽  
Author(s):  
Pei Wu ◽  
Chao Liu ◽  
Ou Wang ◽  
Xia Zhao ◽  
Fang Chen ◽  
...  

AbstractIn this paper, we report a pipeline, AsmMix, which is capable of producing both contiguous and high-quality diploid genomes. The pipeline consists of two steps. In the first step, two sets of assemblies are generated: one is based on co-barcoded reads, which are highly accurate and haplotype-resolved but contain many gaps, the other assembly is based on single-molecule sequencing reads, which is contiguous but error-prone. In the second step, those two sets of assemblies are compared and integrated into a haplotype-resolved assembly with fewer errors. We test our pipeline using a dataset of human genome NA24385, perform variant calling from those assemblies and then compare against GIAB Benchmark. We show that AsmMix pipeline could produce highly contiguous, accurate, and haplotype-resolved assemblies. Especially the assembly mixing process could effectively reduce small-scale errors in the long read assembly.


Author(s):  
Vella Karmenu

This chapter focuses on the fifty actions proposed by the European Commission and its High Representative for Foreign Affairs and Security Policy in three priority areas to ensure safe, secure, clean and sustainably managed oceans: improving the international ocean governance framework; reducing pressure on oceans and seas and creating the conditions for a sustainable blue economy; and strengthening international ocean research and data. It also considers a number of policy proposals put forward by the EU with a view to improving the international ocean governance framework. Finally, it discusses the role of the EU in shaping international ocean governance on the basis of its experience in developing a sustainable approach to ocean management, notably through its environment policy, integrated maritime policy, reformed common fisheries policy, and its maritime transport policy.


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