A Framework for Parameterized Design of Rule Systems Applied to Algebra

Author(s):  
Eric Butler ◽  
Emina Torlak ◽  
Zoran Popović
1969 ◽  
Author(s):  
Robert Hogan ◽  
Nancy M. Henley
Keyword(s):  

Author(s):  
Henning Grosse Ruse-Khan

This chapter discusses conflict-resolution tools and develops an analytical structure building on rules and principles in international intellectual property (IP) treaties, other rule-systems, and general international law to define norm relationships of interpretation and of conflict. Several tools are taken from the ‘toolbox’ developed in the Fragmentation Report of the International Law Commission and other fragmentation literature. Depending on the type of relationship at stake, the most appropriate legal tools to address them may vary. The ILC Report and Conclusions provide for some of the tools and to some extent for an analytical structure, a logical order for examining these relationships. As the chapter shows, for some types of legal relations other approaches are more adequate. They hence complement the ILC principles and need to be integrated in the set of tools available.


Author(s):  
Giles Reger ◽  
David Rydeheard

AbstractParametric runtime verification is the process of verifying properties of execution traces of (data carrying) events produced by a running system. This paper continues our work exploring the relationship between specification techniques for parametric runtime verification. Here we consider the correspondence between trace-slicing automata-based approaches and rule systems. The main contribution is a translation from quantified automata to rule systems, which has been implemented in Scala. This then allows us to highlight the key differences in how the two formalisms handle data, an important step in our wider effort to understand the correspondence between different specification languages for parametric runtime verification. This paper extends a previous conference version of this paper with further examples, a proof of correctness, and an optimisation based on a notion of redundancy observed during the development of the translation.


2000 ◽  
Vol 38 (3) ◽  
pp. 487-509 ◽  
Author(s):  
James S. Wunsch

The political revolution of contemporary Africa has so far largely been limited to the centre and to re-establishing the same institutional forms and processes which failed Africa in the 1960s. These regimes are already showing signs of erosion. This problem can be understood through the theory of public goods. Key collective or ‘public’ goods problems impede the collective action necessary for institutional development. Top-down strategies cannot surmount these problems because they cannot integrate and unify the population or structure consensual and sustained collective action.As currently constituted, national levels of government in Africa will be poor partners with local communities in development, be it of democracy or of the economy. In many cases, national regimes only exist at all because minimal contributing sets or political monopolists controlled, were given, or mobilised the resources to establish constituting rule systems which they used to sustain their existing relative advantages during the break-up of imperial systems. As this advantage is usually at the expense of the majority which lives outside the capitals, resources and policies to improve these areas are slow in coming. The slow, bottom-up process by which a true public constitution is built, one which reflects and elaborates generally held values, is built on existing political relationships, and protects social diversity, has never been allowed to develop.Refounding the African state must resolve these problems if it is to succeed. Ethnically and religiously diverse peoples will rule themselves better under federal and consociational systems which give local leaders space to lead local institutional development, authority to play a role in national governance, a process to develop consensus on central policy and to check the centre when there is no consensus. This requires a foundation of viable, real, developed structures of local governance if it is to succeed.


PLoS ONE ◽  
2012 ◽  
Vol 7 (12) ◽  
pp. e51468 ◽  
Author(s):  
Shang-Ming Zhou ◽  
Ronan A. Lyons ◽  
Sinead Brophy ◽  
Mike B. Gravenor

2018 ◽  
Vol 24 (6) ◽  
pp. 935-944 ◽  
Author(s):  
Mingke Li ◽  
Wangyu Liu

PurposeThe purpose of this paper is to present the novel parameterized digital-mask generation method which is aimed at enhancing bio-scaffold’s fabricating efficiency with digital micro-mirror device (DMD)-based systems.Design/methodology/approachA method to directly generate the digital masks of bio-scaffolds without modeling the entire 3D scaffold models is presented. In most of the conventional methods, it is inefficient to dynamically modify the size of the structural unit cells during design, because it relies more or less on commercial computer aided design (CAD) platforms. The method proposed in this paper can achieve high efficient parameterized design, and it is independent from any CAD platforms. The generated masks in binary bitmap format can be used by the DMD-based to achieve scaffold’s additive manufacture. In conventional methods, the Boolean operation of the external surface and the internal architectures would result in the damage of unit cells in boundary region. These damaged unit cells not only lose its original mechanical property but also cause numbers of gaps and isolated features that would reduce the geometric accuracy of the fabricated scaffolds; the proposed method in this paper provides an approach to tackle this defect.FindingsThe results show that the proposed method can improve the digital masks generation efficiency.Practical implicationsThe proposed method can serve as an effective supplement to the slicing method in additive manufacture. It also provides a way to design and fabricate scaffolds with heterogeneous architectures.Originality/valueThis paper gives supports to fabricate bio-scaffold with DMD-based systems.


2018 ◽  
Vol 90 (7) ◽  
pp. 1077-1087 ◽  
Author(s):  
Pericles Panagiotou ◽  
Efstratios Giannakis ◽  
Georgios Savaidis ◽  
Kyros Yakinthos

Purpose The purpose of this paper is to present the preliminary design of a medium altitude long endurance (MALE) unmanned aerial vehicle (UAV), focusing on the interaction between the aerodynamic and the structural design studies. Design/methodology/approach The classic layout theory was used, adjusted for the needs of unmanned aircraft, including aerodynamic calculations, presizing methods and CFD, to estimate key aerodynamic and stability coefficients. Considering the structural aspects, a combination of layout, finite element methods and custom parameterized design tools were used, allowing automatic reshapes of the skin and the internal structural parts, which are mainly made of composite materials. Interaction loops were defined between the aforementioned studies to optimize the performance of the aerial vehicle, maximize the aerodynamic efficiency and reduce the structural weight. Findings The complete design procedure of a UAV is shown, starting from the final stages of conceptual design, up to the point where the detail design and mechanical drawings initiated. Practical implications This paper presents a complete view of a design study of a MALE UAV, which was successfully constructed and flight-tested. Originality/value This study presents a complete, synergetic approach between the configuration layout, aerodynamic and structural aspects of a MALE UAV.


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