Fluidization science,its development and future

By revisiting the three stage theory for the progress of science proposed by Taketani in 1942, the footmarks of fluidization research are examined. The bubbling and fast fluidization issues were emphasized so that the future offluidization research can be discussed among scientists and engineers in a wider perspective. The first cycle of fluidization research was started in the early 1940s by an initial stage of phenomenology. The second stage of structural studies was kicked off in the early 1950s with the introduction of the two phase theory. The third stage of essential studies occurred in the early 1960s in the form of bubble hydrodynamics. The second cycle, which confirmed the aforementioned three stages closed at the turn of the century, established a general understanding of suspension structures including agglomerating fluidization, bubbling, turbulent and fast fluidizations and pneumatic transport; also established powerful measurement and numerical simulation tools.After a general remark on science, technology and society issues the interactions between fluidization technology and science are revisited. Our future directions are discussed including the tasks in the third cycle, particularly in its phenomenology stage where strong motivation and intention are always necessary, in relation also to the green reforming of the present technology. A generalized definition of ＇fluidization＇ is proposed to extend fluidization principle into much wider scientific fields, which would be effective also for wider collaborations.

Socio-ecological dynamics and challenges to the governance of Neglected Tropical Disease control

The current global attempts to control the so-called“Neglected Tropical Diseases(NTDs)”have the potential to significantly reduce the morbidity suffered by some of the world’s poorest communities.However,the governance of these control programmes is driven by a managerial rationality that assumes predictability of proposed interventions,and which thus primarily seeks to improve the cost-effectiveness of implementation by measuring performance in terms of pre-determined outputs.Here,we argue that this approach has reinforced the narrow normal-science model for controlling parasitic diseases,and in doing so fails to address the complex dynamics,uncertainty and socio-ecological context-specificity that invariably underlie parasite transmission.We suggest that a new governance approach is required that draws on a combination of non-equilibrium thinking about the operation of complex,adaptive,systems from the natural sciences and constructivist social science perspectives that view the accumulation of scientific knowledge as contingent on historical interests and norms,if more effective control approaches sufficiently sensitive to local disease contexts are to be devised,applied and managed.At the core of this approach is an emphasis on the need for a process that assists with the inclusion of diverse perspectives,social learning and deliberation,and a reflexive approach to addressing system complexity and incertitude,while balancing this flexibility with stability-focused structures.We derive and discuss a possible governance framework and outline an organizational structure that could be used to effectively deal with the complexity of accomplishing global NTD control.We also point to examples of complexity-based management structures that have been used in parasite control previously,which could serve as practical templates for developing similar governance structures to better manage global NTD control.Our results hold important wider implications for global health policy aiming to effectively control and eradicate parasitic diseases across the world.