24,007 research outputs found
BENJAMIN CONSTANT AND THE PRINCIPES DE POLITIQUE
No full textopenQUESTO LAVORO FORNISCE UNA PANORAMICA SUL PENSIERO POLITICO DI BENJAMIN CONSTANT, PARTENDO DALL'OPERA DEL 1815 "PRINCIPES DE POLITIQUE APPLICABLES A TOUS LES GOUVERNEMENT".
NEL PRIMO CAPITOLO SONO ESPOSTI ALCUNI DATI BIOGRAFICI RIGUARDO ALL'AUTORE, NEL SECONDO CAPITOLO VIENE PRESENTATO IL PENSIERO DI CONSTANT RIGUARDO ALLA COSTITUZIONE, NEL TERZO CAPITOLO SONO PRESENTANTI I POTERI FONDAMENTALI CHE L'AUTORE TRATTA, NEL QUARTO CAPITOLO VIENE PRESENTATO IL PENSIERO DELL'AUTORE RIGUARDO ALLA SOCIETA' E, NELL'ULTIMO CAPITOLO, SI TROVANO ALCUNI CONFRONTI TRA BENJAMIN CONSTANT ED ALTRI AUTORI, COME ROUSSEAU E MONTESQUIEU.THIS WORK PROVIDES AN OVERVIEW OF BENJAMIN CONSTANT'S POLITICAL THOUGHT, STARTING FROM THE 1815 WORK "PRINCIPES DE POLITIQUE APPLICABLES A TOUS LES GOUVERNEMENT".
IN THE FIRST CHAPTER SOME BIOGRAPHICAL DATA ABOUT THE AUTHOR ARE PRESENTED, IN THE SECOND CHAPTER CONSTANT'S THOUGHT ON THE CONSTITUTION IS PRESENTED, IN THE THIRD CHAPTER THE FUNDAMENTAL POWERS THAT THE AUTHOR DEALS WITH ARE PRESENTED, IN THE FOURTH CHAPTER THERE IS THE AUTHOR'S THOUGHT ABOUT SOCIETY AND, IN THE LAST CHAPTER, THERE ARE SOME COMPARISONS BETWEEN BENJAMIN CONSTANT AND OTHER AUTHORS, LIKE ROUSSEAU AND MONTESQUIEU
Constant market shares analysis: uses, limitations and prospects
Get PDFIn this paper, we generalise the constant market shares (CMS) framework, with particular attention to the underlying theoretical conditions required for diagnostic interpretation. The approach is applied to the analysis of the export performance of the Australian processed food sector in South-East Asia over the period 1980–2003. We conclude that the usefulness of CMS analysis for evaluating a country’s international trade performance depends upon the empirical validity of the aggregation assumptions implicit in the diagnostic interpretation.aggregation, Armington model, competitiveness, constant market shares, Marketing,
From intent to impact: Reflections and recommendations for EDI across the agri-food sector
No full textEquity, diversity and inclusion (EDI) are increasingly positioned as essential to effective agri-food systems transformation, yet evidence on how EDI commitments translate into practice over the lifecycle of large research networks remains limited. This report presents findings from a developmental evaluation of the Agri-food for Net Zero Network+ (AFN Network+), a UKRI-funded initiative involving over 3,000 members across research, policy, industry and civil society. Drawing on 24 semi-structured interviews and a network-wide survey (n=94), the study examines how EDI evolved from proposal-stage intentions to operational practice over three years.Using an analytical framework that combines four phases of network development (pre-development, take-off, acceleration and stabilisation) with justice-based dimensions of redistribution, recognition, representation and power dynamics, the report identifies patterns of progress, constraint and unintended consequence. Findings show that while the AFN Network+ made substantive advances - particularly in redistributing resources, supporting early-career professionals, valuing diverse forms of knowledge and designing inclusive events - early design choices, informal cultures and concentrated decision-making power continued to limit who influenced strategic direction. EDI became increasingly embedded in leadership culture over time, yet its visibility and impact were unevenly experienced across the wider membership.The report concludes that moving from EDI intent to impact requires more than rhetorical commitment. It demands operational clarity from the outset, dedicated resourcing, transparent pathways to leadership, and mechanisms that translate participation into influence. Practical recommendations are offered for UKRI as a funder and for future network leads, alongside an adaptable EDI planning and evaluation dashboard. Together, these insights provide a transferable blueprint for embedding justice-oriented EDI across collaborative agri-food research and innovation programmes
Lipschitz continuous dependence of piecewise constant Lamé coefficients from boundary data: the case of non flat interfaces
No full textWe consider the inverse problem of determining the Lame' moduli for a piecewise constant elasticity tensor
, where is a known finite partition of the body , from the Dirichlet-to-Neumann map.
We prove that Lipschitz stability estimates can be derived under regularity assumptions on the interfaces
Kemeny's constant and the effective graph resistance
No full textKemeny's constant and its relation to the effective graph resistance has been established for regular graphs by Palacios et al. [1]. Based on the Moore–Penrose pseudo-inverse of the Laplacian matrix, we derive a new closed-form formula and deduce upper and lower bounds for the Kemeny constant. Furthermore, we generalize the relation between the Kemeny constant and the effective graph resistance for a general connected, undirected graph.Accepted Author ManuscriptMathematical PhysicsNetwork Architectures and Service
Limit Theorem for a Modified Leland Hedging Strategy under Constant Transaction Costs rate
Get PDFWe study the Leland model for hedging portfolios in the presence of a constant proportional transaction costs coefficient. The modified Leland's strategy recently defined by the second author, contrarily to the classical one, ensures the asymptotic replication of a large class of payoff. In this setting, we prove a limit theorem for the deviation between the real portfolio and the payoff. As Pergamenshchikov did in the framework of the usual Leland's strategy, we identify the rate of convergence and the associated limit distribution. This rate turns out to be improved using the modified strategy and non periodic revision dates.Asymptotic hedging ; Leland-Lott strategy ; Transaction costs ; Martingale limit theorem.
Desudaboides fletcheri Constant, 2010, n. sp.
No full textDesudaboides fletcheri n. sp. Figs. 1 A–B, 5. Etymology. fletcheri: dedicated to my friend, Dr Murray J. Fletcher who sent the only known specimen for study and always kindly supported the work of the author. Material examined. Holotype Ƥ: [East Ballina, N.S.W, 10 March 1964, I. Bathgate, at light] [MJF collection, MJF003192] (ASCU) coordinates of East Ballina: 28 ° 52 'S 153 ° 35 'E. Diagnosis. The species is immediately recognized by the following combination of characters: (1) frons pale yellow-brown with 2 small black spots at base of disc (Fig. 1 B), (2) hind wings without red or orange (Fig. 1 A), (3) abdominal tergites 5 to 8 red (Fig. 1 A), (4) size less than 24 mm. Description. LT (extrapolated): Ƥ (n = 1): 21 mm. Head: pale yellow-brown, with 2 baso-lateral points on disc of frons and frons-vertex joint black (Figs. 1 A–B); median and lateral oblique carinae on disc of frons well marked (Fig. 1 B); pedicel large, inflated and reniform (Fig. 1 B); labium reaching median trochanters; ratio BV/LV = 4.9; BF/LF = 1.5. Thorax: pale yellow-brown, including tegulae; row of 4 black dots on pronotum, behind head; mesonotum with black dots: row of 7 along posterior margin of pronotum, row of 4 on disc and one on scutellum; 2 small black spots on lateral thoracic pleura; mesonotum black (Fig. 1 A); ratio LP+LM/BT = 0.9; LM/LP = 2.2. Tegmina: apical half hyaline with veins pale yellow-green; basal half pale yellow-green with veins brown; costal cell pale orange-brown; all densely covered with rounded, black spots, often confluent, larger ones with central pale spot covered with white waxy secretion (fig. 1 A); ratio LTg/BTg = 3.25. Hind wings: apical half hyaline; basal half black with large, ante-basal, milky white patch; white patch marked with black between veins R and M and along claval joint; veins black, vein Sc white basally (Fig. 1 A). Legs: all legs pale yellow-brown with apex of tarsi and of spines of hind legs black; hind tibiae with 4 lateral and 7 apical spines (Fig. 1 A). Abdomen: dorsally, black with sides of tergite 4 and tergites 5 to 8 red (Fig. 1 A); pale yellow-brown ventrally. Biology. The only known specimen has been caught at light trap. Distribution (Fig. 5). NE New South Wales.Published as part of Constant, Jerome, 2010, Review of the Australian genus Desudaboides Musgrave with descriptions of four new species (Hemiptera: Fulgoromorpha: Fulgoridae), pp. 39-48 in Zootaxa 2351 on page 43, DOI: 10.5281/zenodo.19346
An Auto-Zero Stabilized Voltage Buffer with a Quiet Chopping Scheme and Constant Input Current
No full text The readout of high-impedance sensors and sampled voltage references [1] requires amplifiers that can achieve both low offset and low input current. Recently, it has been shown that this unique combination can be achieved by an auto-zero (AZ) stabilized buffer [2]. However, its low-frequency noise density is surd 5 times higher than the buffer's own white-noise voltage spectral density e n . Furthermore, its input current is not constant, but varies significantly with the input voltage. To overcome the first issue, a chopped AZ stabilization loop with an optimized duty-cycle is proposed to bring the low-frequency noise density close to surd 2cdot {e}-{n}, the fundamental limit of an AZ stabilized amplifier. The second issue is solved by replacing the transmission-gate input switches used in [2] with NMOS switches and a constant Vgs drive. This keeps their charge injection constant over a wide input voltage range, and results in a constant input current. Session 18.3 Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic InstrumentationMicroelectronic
FilipeChagasDev/register-by-constant-qft-adder:
No full textIntroduction
This is a quantum algorithm I created that can be considered a simplified version of Draper's adder. This algorithm is described as a unitary operator such that , where is the initial state of the -qubit register. This state can be defined for natural number as:
This state can also be defined for (signed) integer numbers using the two's complement notation.
The operator is defined as , where .
Organization
This repository is organized as follows:
The file qiskit_quantum_fourier_transform.py contains a function that gives the QFT gate. As the filename says, this function uses Qiskit.
The file qiskit_reg_by_const_qft_adder.py has functions that gives Qiskit gates of the operators and .
The file qiskit_reg_by_const_qft_adder_test.ipynb is a Jupyter notebook made for test the functions in qiskit_reg_by_const_qft_adder.py. This notebook contains the results of some tests.
The file numeric_systems.py has functions that convert natural numbers and integers into sequences of bits. These functions are used for testing.
The file test_tools.py contains functions that are used for testing.
Paper
This algorithm is described in detail in the paper "Quantum Algorithm based on Quantum Fourier Transform for Register-by-Constant Addition" (https://doi.org/10.48550/arXiv.2207.05309). If you use this algorithm in your research, please cite it as follows:
@misc{ferraz_22,
doi = {10.48550/ARXIV.2207.05309},
url = {https://arxiv.org/abs/2207.05309},
author = {Ferraz, Filipe Chagas},
keywords = {Quantum Physics (quant-ph), FOS: Physical sciences, FOS: Physical sciences},
title = {Quantum Algorithm based on Quantum Fourier Transform for Register-by-Constant Addition},
publisher = {arXiv},
year = {2022},
copyright = {Creative Commons Attribution 4.0 International}
The constant of point-line incidence constructions
Get PDFWe study a lower bound for the constant of the Szemer\'edi-Trotter theorem.
In particular, we show that a recent infinite family of point-line
configurations satisfies , with . Our technique is based on
studying a variety of properties of Euler's totient function. We also improve
the current best constant for Elekes's construction from 1 to about 1.27. From
an expository perspective, this is the first full analysis of the constant of
Erd\H os's construction
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