scholarly journals Arrays Made Simpler: An Efficient, Scalable and Thorough Preprocessing

10.29007/dc9b ◽  
2018 ◽  
Author(s):  
Benjamin Farinier ◽  
Robin David ◽  
Sébastien Bardin ◽  
Matthieu Lemerre
Keyword(s):  
Software Verification ◽  
Low Cost ◽  
Symbolic Execution ◽  
Central Place ◽  
Theory And Practice ◽  
New Approach ◽  
Verification Methods ◽  
Equality Reasoning ◽  
The Impact ◽  
Simplification Techniques

The theory of arrays has a central place in software verification due to its ability to model memory or data structures. Yet, this theory is known to be hard to solve in both theory and practice, especially in the case of very long formulas coming from unrolling-based verification methods. Standard simplification techniques à la read-over-write suffer from two main drawbacks: they do not scale on very long sequences of stores and they miss many simplification opportunities because of a crude syntactic (dis-)equality reasoning. We propose a new approach to array formula simplification based on a new dedicated data structure together with original simplifications and low-cost reasoning. The technique is efficient, scalable and it yields significant simplification. The impact on formula resolution is always positive, and it can be dramatic on some specific classes of problems of interest, e.g. very long formula or binary-level symbolic execution. While currently implemented as a preprocessing, the approach would benefit from a deeper integration in an array solver.

scholarly journals The impact of asymmetry on equilibrium of logistics systems

2019 ◽  
Vol 294 ◽  
pp. 06004
Author(s):  
Irina Savelieva ◽  
Serhij Melnikov ◽  
Alexandra Orlovska
Keyword(s):  
Information Asymmetry ◽  
Systems Design ◽  
Theory And Practice ◽  
New Approach ◽  
Asymmetry Of Information ◽  
Logistics Systems ◽  
Transport Services ◽  
Quality Of Products ◽  
The Impact

The article examines one of the actual problems of the theory and practice of the logistics systems functioning related to the asymmetry of information in the transport services market. Assessing the level of asymmetry in logistics systems is of fundamental importance to increase the competitiveness of relevant systems. New approach formulated herein estimates the logistics systems asymmetry by taking into account information asymmetry about the quality of transport products, as well as information asymmetry about the quality of products within the boundaries of the corresponding supply chain. This approach allows to take into account its potential capabilities and increase functional stability in the process of logistics systems design.

ADAPTIVE SELECTION: THEORY AND PRACTICE OF THE SELECTION FOR PRODUCTIVITY

1970 ◽  
pp. 29-32 ◽  
Author(s):  
А. I. Pryanishnikov ◽  
I. V. Savchenko ◽  
V. N. Mazurov
Keyword(s):  
Winter Wheat ◽  
Wheat Yield ◽  
Central Place ◽  
Theory And Practice ◽  
Wheat Varieties ◽  
Adaptive Selection ◽  
Cluster Group ◽  
The Impact ◽  
Winter Wheat Varieties ◽  
Selection Of

The Questions of study "genotype-environmental” interaction are occupy a central place in the development of the theory of Adaptive selection, because such relationship varied and complex as the nature and degree of the manifestation. The selection of the same promising accessions in the realization of their productive properties aimed at the selection of genotypes, for whom the impact of this interaction is minimal. For example, the creation of winter wheat varieties CASAR and Kalach 60 proved that the screening efficiency is dictated by choosing selective background and combination of natural condition, contributing to the assessment of "genotype-environmental” components along the environmental vector created the system of multilokacionnyh tests. Cluster analysis of the 30 varieties of winter wheat yield allowed to group them by the nature of the productive properties realization and to distinguish two groups with high indicators. Kalach 60 with an average yield of 10516.05 pounds per hectare was integrated into the Pearl of the Volga region group. KASAR, with the yield of 9854,66 pounds per hectare, formed its own cluster group, which included selection lines L 52-98, as well as L 40-01 and L 41-01. Significant differences of the varieties were in variability of productive properties, depending on the emerging conditions. The first cluster group varieties are characterized by the more restrained variation in yield than KASAR. A detailed analysis was revealed that the latter varieties significantly reduced the indices in more severe growing conditions, exceeding the first in the years favorable for the moistening regime. In light of this decision on biometric methods used to identify differences on the fenotipicheskom level, the task falls to dissect a quantitative manifestation of biological concepts and increase its informative about the nature adaptation of new varieties on the multidimensionality of the factor. The article gives a detailed description of new winter wheat varieties according to the results of the studies.

Beating Time in the Slow Movements: Bensaïd’s Revolutionary Rhythms

2016 ◽  
Vol 24 (4) ◽  
pp. 129-149
Author(s):  
Xavier Lafrance ◽  
Alan Sears
Keyword(s):  
Theoretical Analysis ◽  
Working Class ◽  
Theory And Practice ◽  
The Political ◽  
New Approach ◽  
Political Sphere ◽  
History Of ◽  
The 1960S ◽  
The Impact ◽  
Social Weight

Daniel Bensaïd was prominent among the revolutionary thinkers and activists who emerged from the mass insurgency of the 1960s, a period in which anti-capitalist organisers had genuine social weight grounded in connections to broad layers of the working class and radical movements. As the neoliberal offensive developed, working-class and allied movements experienced crucial defeats that marginalised anti-capitalist theory and practice. Bensaïd developed a unique theoretical analysis of radical mobilising during the neoliberal period, at once grounded in the history of revolutionary organising and audaciously open-ended in assessing the impact of capitalist restructuring and the employers’ offensive. The basis of his theoretical renewal lay in a new approach to understanding temporality that undercut any sense of socialist inevitability, and a commitment to revolutionary pluralism that was crucially located in the political sphere.

Computer simulation study about the dependence of amorphous silicon photonic waveguides efficiency on the material quality

2020 ◽  
Vol 90 (3) ◽  
pp. 30502
Author(s):  
Alessandro Fantoni ◽  
João Costa ◽  
Paulo Lourenço ◽  
Manuela Vieira
Keyword(s):  
Amorphous Silicon ◽  
High Throughput Screening ◽  
Simulation Analysis ◽  
Low Cost ◽  
Deposition Process ◽  
Large Area ◽  
Sidewall Roughness ◽  
Sensing Applications ◽  
Fabrication Defects ◽  
The Impact

Amorphous silicon PECVD photonic integrated devices are promising candidates for low cost sensing applications. This manuscript reports a simulation analysis about the impact on the overall efficiency caused by the lithography imperfections in the deposition process. The tolerance to the fabrication defects of a photonic sensor based on surface plasmonic resonance is analysed. The simulations are performed with FDTD and BPM algorithms. The device is a plasmonic interferometer composed by an a-Si:H waveguide covered by a thin gold layer. The sensing analysis is performed by equally splitting the input light into two arms, allowing the sensor to be calibrated by its reference arm. Two different 1 × 2 power splitter configurations are presented: a directional coupler and a multimode interference splitter. The waveguide sidewall roughness is considered as the major negative effect caused by deposition imperfections. The simulation results show that plasmonic effects can be excited in the interferometric waveguide structure, allowing a sensing device with enough sensitivity to support the functioning of a bio sensor for high throughput screening. In addition, the good tolerance to the waveguide wall roughness, points out the PECVD deposition technique as reliable method for the overall sensor system to be produced in a low-cost system. The large area deposition of photonics structures, allowed by the PECVD method, can be explored to design a multiplexed system for analysis of multiple biomarkers to further increase the tolerance to fabrication defects.

Advancing dairy farming profitability through research

2001 ◽  
pp. 17-22
Author(s):  
J.R. Caradus ◽  
D.A. Clark
Keyword(s):  
Research And Development ◽  
Dairy Cow ◽  
Low Cost ◽  
Pasture Management ◽  
Nitrogen Fertiliser ◽  
Grass Endophyte ◽  
Forage Species ◽  
Development Outcomes ◽  
Dairy Cow Nutrition ◽  
The Impact

The New Zealand dairy industry recognises that to remain competitive it must continue to invest in research and development. Outcomes from research have ensured year-round provision of low-cost feed from pasture while improving productivity. Some of these advances, discussed in this paper, include the use of white clover in pasture, understanding the impacts of grass endophyte, improved dairy cow nutrition, the use of alternative forage species and nitrogen fertiliser to improve productivity, demonstration of the impact of days-in-milk on profitability, and the use of feed budgeting and appropriate pasture management. Keywords: dairy, profitability, research and development

Janus – A New Approach to Air Combat Pilot Training

2019 ◽  
Vol 2019 (4) ◽  
pp. 7-22
Author(s):  
Georges Bridel ◽  
Zdobyslaw Goraj ◽  
Lukasz Kiszkowiak ◽  
Jean-Georges Brévot ◽  
Jean-Pierre Devaux ◽  
...  
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
High Energy ◽  
Training System ◽  
Embedded Sensors ◽  
Pilot Training ◽  
New Approach ◽  
Combat Aircraft ◽  
Air Combat ◽  
The Cost

Abstract Advanced jet training still relies on old concepts and solutions that are no longer efficient when considering the current and forthcoming changes in air combat. The cost of those old solutions to develop and maintain combat pilot skills are important, adding even more constraints to the training limitations. The requirement of having a trainer aircraft able to perform also light combat aircraft operational mission is adding unnecessary complexity and cost without any real operational advantages to air combat mission training. Thanks to emerging technologies, the JANUS project will study the feasibility of a brand-new concept of agile manoeuvrable training aircraft and an integrated training system, able to provide a live, virtual and constructive environment. The JANUS concept is based on a lightweight, low-cost, high energy aircraft associated to a ground based Integrated Training System providing simulated and emulated signals, simulated and real opponents, combined with real-time feedback on pilot’s physiological characteristics: traditionally embedded sensors are replaced with emulated signals, simulated opponents are proposed to the pilot, enabling out of sight engagement. JANUS is also providing new cost effective and more realistic solutions for “Red air aircraft” missions, organised in so-called “Aggressor Squadrons”.

Economic behavior of households and their welfare: models and forms of interaction

2020 ◽  
pp. 3-8
Author(s):  
Maryana Bil ◽  
Olha Mulska
Keyword(s):  
Economic Growth ◽  
Social Protection ◽  
Well Being ◽  
Central Place ◽  
Economic Behavior ◽  
Human Potential ◽  
Modern Theory ◽  
Economic Behaviour ◽  
Theoretical Approaches ◽  
The Impact

The article defines the content of welfare as a measure of socially oriented efficiency of economic growth, which reflects the appropriate level of providing the population with material and spiritual goods with the formation of favourable conditions for human development and capitalization of human potential in a competitive mobile space. The modern theory of welfare testifies to the deepening of scientific discussions on the transformation of economic welfare into mobile and inclusive, as well as the opposition of competitive and social protection welfare policy. Another milestone in the evolution of welfare theory is the individualization of its provision. Conditions of competition and mobility increase the importance of households in providing their well-being with further reflection on the processes of economic growth of the community, region, and state. This gives grounds to actualize the issues of household welfare research and strengthening economic growth based on behavioural economics. The needs, interests, motives, and incentives determine the economic behaviour of households. At higher levels, it defines an economic culture that is closely linked to the national mentality. In this regard, the main models of economic and social behaviour of households – socialization, adaptation, integration, values, regulation, and the definition of financial development strategies are outlined. Theoretical approaches to the explanation of economic behaviour are generalized, namely religious-ethical, psychological, substantive theories, theories of motivations and acquired needs, process theories, theories of justice, and others. Based on the ideas of foreign scientists, the main determinants of the economic policy of households are proposed. Political, stabilizing, and economic determinants are distinguished in the group of general determinants. In the group of determinants directly related to households, the financial, demographic, cultural, social, empirical, and psychological are suggested. The author’s emphasis is placed on the importance of the impact of financial determinants of the households’ economic behaviour, the central place among which is occupied by savings.

Art, Idleness and Food: The Ethics of War Communism and the Origins of Production Art, 1918–1919

2019 ◽  
Vol 29 (1) ◽  
pp. 273-287
Keyword(s):  
Theory And Practice ◽  
State Institutions ◽  
Early Production ◽  
Policy Measures ◽  
Soviet Ideology ◽  
The Right ◽  
The Impact ◽  
The City ◽  
Further Development ◽  
Theory Of Production

The article examines the impact of the discourses concerning idleness and food on the formation of “production art” in the socio-political context of revolutionary Petrograd. The author argues that the development of the theory and practice of this early productionism was closely related to the larger political, social and ideological processes in the city. The Futurists, who were in the epicenter of Petrograd politics during the Civil War (1918–1921), were well acquainted with both of the discourses mentioned, and they contrasted the idleness of the old art with the dedicated labor of the “artist-proletarians” whom they valued as highly as people in the “traditional” working professions. And the search for the “right to exist” became the most important goal in a starving city dominated by the ideology of radical communism. The author departs from the prevailing approach in the literature, which links the artistic thought of the Futurists to Soviet ideology in its abstract, generalized form, and instead elucidates ideological influences in order to consider the early production texts in their immediate social and political contexts. The article shows that the basic concepts of production art (“artist-proletarian,” “creative labor,” etc.) were part of the mainstream trends in the politics of “red Petrograd.” The Futurists borrowed the popular notion of the “commune” for the title of their main newspaper but also worked with the Committees of the Rural Poor and with the state institutions for procurement and distribution. They took an active part in the Fine Art Department of Narkompros (People’s Commissariat of Education). The theory of production art was created under these conditions. The individualistic protest and “aesthetic terror” of pre-revolutionary Futurism had to be reconsidered, and new state policy measures were based on them. The harsh socio-economic context of war communism prompted artists to rethink their own role in the “impending commune.” Further development of these ideas led to the Constructivist movement and strongly influenced the extremely diverse trends within the “left art” of the 1920s.

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