139 research outputs found
Dataset for "selection rules in symmetry-broken systems by symmetries in synthetic dimensions"
No full text<p>Data for the article "Selection rules in symmetry-broken systems by symmetries in synthetic dimensions" by Matan Even Tzur, Ofer Neufeld, Eliyahu Bordo, Avner Fleischer, and Oren Cohen.</p>
Three-Dimensional Spatiotemporal Pulse-Train Solitons
No full textExperimental realization of three-dimensional spatiotemporal solitons, which were proposed several decades ago, is still considered a “grand challenge” in nonlinear science. Here, we present experimental observation of 3D optical spatiotemporal pulse-train solitons. A spatially bright temporally dark pulse-train beam is trapped in a bulk medium that supports two types of nonlinearities: slowly responding saturable self-focusing that collectively self-trap the beam in the transverse directions and fast self-phase modulation that self-localizes each dark notch temporally (longitudinally). This work opens the possibility for experimental investigations of various soliton phenomena, including soliton interaction in 3D, formation of multimode spatiotemporal solitons, and envisioning new entities like partially coherent spatiotemporal solitons
A dynamical symmetry triad in high-harmonic generation revealed by attosecond recollision control
No full textAn Optimal Size for Rural Tourism Villages with Agglomeration and Club-Good Effects
Full text linkHelping to sustain a viable rural sector, rural tourism enjoys public support in many countries. We claim that due to club-good and agglomeration externalities in the rural accommodation market, public support should be integrated in a broader local development policy that regulates the number of accommodation units in a locality. To demonstrate this we extended an equilibrium model that accounts for product differentiation and oligopolistic competition to address club-good and agglomeration effects and applied it to data collected in north Israel. We show that under the prevailing regulation, the number of units is by far higher than the social optimum.Community/Rural/Urban Development, International Development, Political Economy,
Interlocked attosecond pulse trains in slightly bi-elliptical high harmonic generation
No full textAbstractThe ellipticity of high harmonics driven by bi-chromatic (e.g. ω−2ω) co-propagating fields can be fully tuned by varying the polarization of the pump components. In order to start revealing the underlying mechanism of this control, we explore a relatively simple regime of this scheme that still gives rise to full control over the harmonics ellipticities. In this regime, the pumps are only slightly elliptical and the high harmonic radiation consists of two (different) interlocked attosecond pulse trains (APTs). We formulate a semi-analytic model that maps the high harmonic ellipticity to properties of the APTs harmonic decompositions. Utilizing this model, we reconstruct these APTs variables from measurements of the high harmonics ellipticities. This ellipticity-resolved spectroscopy of interlocked APTs may be useful for ultrafast probing of chiral degrees of freedom
The Role of Cybermediaries in the Hotel Market
Full text linkThe advent of the Internet changed the way buyers and sellers interact. Although access to information seems unlimited, non-expert agents find it difficult to identify the information they can confidently use. A third-party expert or a cybermediary (an intermediary in the cyberspace) can help sort out the information for the contracting partners. In this paper, we study the case of the online hotel market and the role of the cyber travel agent (CTA). We claim that CTAs encourage hoteliers to exert effort in service quality and provide empirical evidence that these hotels are compensated with a price premium.Cybermediaries, Internet, travel agents, reputation, hotel market, Agricultural Finance, Institutional and Behavioral Economics,
Privacy by Design by Regulation: The Case Study of Ontario
Full text linkThis article presents the findings of a case study examining the role of the regulator in
facilitating Privacy by Design (“PbD”) solutions. With the introduction of PbD into
the new European Union General Data Protection Regulation, it is important to
understand the conditions under which PbD can succeed and the role which regulators
can play (if at all) in promoting such success. Two initiatives with similar technology
are examined: first, a PbD success, the introduction of facial recognition technology
into existing cameras in casinos in Ontario, and second, a PbD failure, the expanded
deployment of cameras within the public transit system of Toronto. The findings are
organized into three overarching themes: PbD-focused findings, leadership and
organizational findings, and regulator-focused findings. The article argues that privacy
continues to persist as an engineering problem despite PbD, that (related to that) there is
growing recognition of privacy as an issue of organizational change and leadership, and
consequently, that the role of the regulator must evolve if PbD is to become a meaningful
regulatory tool, an evolution that carries with it both risks and opportunities for privacy.Not peer reviewe
- …
