Ethics in Computational Communication Science: Between values and perspectives

In Computational Communication Science (CCS) researchers grapple with intricate ethical challenges arising from the collection and analysis of complex data sets often including sensitive or copyrighted data. Rooted in two opposing lines of philosophical arguments - deontology and consequentialism - we argue that CCS research is particularly difficult to be projected onto this ethical spectrum. Our study aims to empirically assess the nature and prevalence of provided arguments and influencing factors for ethical decision-making in CCS research. Through a manual content analysis of 476 CCS studies, sampled from a corpus of 22,375 collected communication science articles, we shed light on data sharing practices and ethical reflections of CCS researchers. Findings indicate large room for maneuver. The majority of studies (89.50%) chose not to share their data, while 6.93% chose to share their data either full or partially. Only 5.88% of studies explicitly addressed general ethical considerations. Ethical review processes were mentioned by 6.51% of studies, with the majority pointing at ethical procedures such as obtaining informed consent, data anonymization measures, or debriefing. This suggests that researchers in CCS prioritize context-specific ethical procedures in the absence of field-specific standards, emphasizing the importance of flexibility in addressing ethical considerations

Online Auctions with Dual-Threshold Algorithms: An Experimental Study and Practical Evaluation

Online auctions are a viable alternative to conventional posted price mechanisms. Agrawal, Wang, and Ye [1] have proposed two primal-dual algorithms for revenue-maximizing multi-item allocation tasks. Although promising in terms of theoretical properties and competitive ratios, there is alack of evidence regarding the real-world practicability of these mechanisms, for instance referring to online auction-based tickets sales. In this paper, we conduct an experimental study on both the One-Time Learning Algorithm(OLA) and the Dynamic Learning Algorithm (DLA) based on synthetic data, revealing the remarkable aptitude of the latter for non-trivial online auctions. Being robust to most input variations, the inherent dynamic update of dual thresholds achieves a superior balance with respect to the trade-off between objective function values and runtimes. We address critical sensitivities quantitatively and draft several small extensions by incorporating input distribution knowledge

Uma proposta de descrição estrutural para resultativas

O presente artigo apresenta uma proposta de descrição estrutural para construções resultativas, conhecidas na literatura técnica por apresentarem uma semântica de resultado sobre um objeto afetado pelo verbo e preexistente à ação verbal. Sintaticamente, são expressadas na sequência (tipicamente não descontínua) [DPNOM VPRINCIPAL DPACC AP], exemplificadas com o dado do alemão: Er raucht Lungen kaputt – ELE FUMA PULMÕES ESTRAGADOS – ‘Ele fuma de forma que pulmões ficam estragados’. Tal construção é tipicamente produtiva em línguas ocidentais germânicas, representadas nesse artigo com dados do inglês, alemão e holandês. Para a análise, leva-se em conta principalmente as característias aspectuais da construção, em que a telecidade é construída composicionalmente na sequência [V DPACC AP]. Propõe-se a existência de um núcleo funcional de natureza aspectual, responsável pelo licenciamento sintático da construção. Como evidência para a existência desse núcleo, tomam-se as construções resultativas que ocorrem na presença de partícula verbal, partícula essa argumentada neste artigo como sendo de natureza aspectual

Effective and back stresses evolution upon cycling a high-entropy alloy

We report on the effective and back stresses evolution of a CoCrFeMnNi high-entropy alloy (HEA) by partitioning its cyclic hysteresis loops. It was found that the cyclic stress response of the HEA predominantly originates from the back stress evolution. Back stress also increases significantly with increasing strain amplitude and reducing grain size. However, the change of effective stress is rather insignificant with altering cycle number, strain amplitude and grain size. This indicates that the effective stress is determined mainly by the lattice friction. Further comparisons to an austenitic steel and a medium-entropy alloy identified the origins of their peculiar cyclic strength. The effective stress and back stress upon cycling a HEA are assessed, both of which are higher than a conventional FCC steel, contributing to the HEA’s higher cyclic strength

Development and test results of a readout chip for the GERDA experiment

This paper describes the F-CSA104 architecture and its measurement results. The F-CSA104 is for γ spectroscopy with Ge detectors. It is a low noise, fully integrated, four channel XFAB 0.6μm CMOS technology ASIC, that has been developed for the GERDA experiment. Each channel contains a charge sensitive preamplifier (CSA) followed by a 11.7MHz differential line driver. It has been particularly designed to operate in liquid argon (T = 87K/-186°C) and to have a measuring sensitivity of 660e- with an ENC of 110e-, after offline filtering with 10μs shaping, when connected to a 30pF load. Special techniques are used to improve the SNR such as a large input PMOS FET, an integrated 500MΩ CSA feedback resistor and a noise degeneration drain resistor

The Nature of Heavy Quasiparticles in Magnetically Ordered Heavy Fermions

The optical conductivity of the heavy fermions UPd2Al3 and UPt3 has been measured in the frequency range from 10 GHz to 1.2 THz (0.04 meV to 5 meV) at temperatures 1 K < T < 300 K. In both compounds a well pronounced pseudogap of less than a meV develops in the optical response at low temperatures; we relate this to the antiferromagnetic ordering. From the energy dependence of the effective electronic mass and scattering rate we derive the energies essential for the heavy quasiparticle. We find that the enhancement of the mass mainly occurs below the energy which is related to magnetic correlations between the local magnetic moments and the itinerant electrons. This implies that the magnetic order in these compounds is the pre-requisite to the formation of the heavy quasiparticle and eventually of superconductivity.Comment: RevTeX, 4 pages, 3 figures, email: [email protected]

Magnetic moments of antidecuplet pentaquarks

We analyze the magnetic moment of the exotic pentaquarks of the flavor antidecuplet in the constituent quark model for the case in which the ground state is in an orbital L(p)=0(+) or a L(p)=1(-) state. We derive sum rules for the magnetic moments. The magnetic moment of the Theta(1540) is found to be 0.38, 0.09 and 1.05 mu_N for J(p)=1/2(-), 1/2(+) and 3/2(+), respectively, which is compared with the results obtained in other approaches.Comment: 15 pages, 1 figure, 3 tables. Revised version, extended introduction and discussion, accepted for publication in Physics Letters