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Item type:Publication, The Policy Making on Venezuelan Migratory Policies in Peru 2017-2022: Processes, Bifurcation Points and Drivers(Universidad Pontificia Comillas de Madrid, 2026-01-01)This study examines Peruvian public policies on Venezuelan migration, identifying factors influencing their formulation and implementation while uncovering their behavioral patterns. Using a qualitative approach based on process tracing and thematic analysis of official documents, media narratives, and statistical data, the research identifies three phases of migration policy: (1) open-door policies, (2) securitization and restriction, and (3) invisibilization and normalization of irregular migration. These phases reveal a disconnect between political rhetoric and practical outcomes, with calculated tolerance for policy non-enforcement and migrant integration delegated to civil society and international organizations. The findings highlight incoherent migration policies marked by legal non-compliance, omission as a strategy, and limited state intervention. These dynamics are driven by advocacy coalitions excluded from decision-making, strained executive-legislative relations, and media-influenced public opinion. The study's originality lies in its innovative combination of process tracing and thematic analysis to explain policy dynamics in contexts of institutional fragility.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Subnational Inflation Dynamics and Anchoring Mechanisms: Empirical Evidence from Regional Spillovers in Peru(RELX Group (Netherlands), 2025-01-01)3 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Steady State Free Precession NMR without Fourier Transform: Redefining the Capabilities of <sup>19</sup>F NMR as a Discovery Tool(Wiley, 2025-01-28)The 2024 Zurich perfluorinated compounds (PFCs) summit reiterated the urgent need for non‐selective analytical approaches for PFC detection. 19 F NMR holds great potential, however, sensitivity limitations lead to long analysis times and/or the possibility of not detecting low concentration species. Steady State Free Precession (SSFP) NMR collects the signal in a steady state regime, allowing 100's of acquisitions in the timespan of a single traditional NMR scan. Unfortunately, data truncation from SSFP leads to artifacts and spectral broadening with Fourier transform, hindering interpretation. When non‐Fourier based time‐domain analysis is used, namely, complete reduction to amplitude frequency tables (CRAFT), limitations of SSFP are eliminated while sensitivity gains are retained. This work introduces the combined approach, then applies it for the measurement of PFCs in environmental and biological samples. In all cases, the approach reduces analysis time from many hours to minutes and/or greatly increases the range of compounds detected. For example, when PFOA was spiked into human blood, the detection limit improved ~50‐fold vs standard NMR, while in a standard mixture, the approach detected compounds missed by LC‐MS/MS. The technique can be adapted to any nucleus providing a facile approach to reduce experiment time and improve sensitivity of NMR in general.4 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Regeneration of Deteriorated Internal Combustion Engine Components used in Thermal Power Plants(2025-01-30)The generation of electric power through internal combustion engines plays an important role in the world economy. Exhaust cases and valves are critical engine components and are subjected to high pressures and temperatures. The additive remanufacturing technology of mechanical components that have reached the end of their useful life due to wear, through the L-DED laser directed energy deposition method, proves to be an effective method to obtain spare parts with similar or even superior characteristics to a new part, extending the product life cycle in the circular economy. The process consists of obtaining 3D models through reverse engineering, additive remanufacturing by L-DED and final machining. It was determined through the study that this methodology can be successfully applied to the exhaust boxes and valves of internal combustion engines for electric generation. The results obtained have shown that this remanufacturing method is an effective solution for the recovery of exhaust boxes and valves that have completed their useful life and can be applied to other engine elements, reducing the cost of the spare part compared to a new one and bringing with it important environmental benefits. In reference to the remanufacturing time, it has been determined that the application of the L-DED process in the exhaust boxes and valves is 3943 and 3677 s respectively. In addition to this time, the time used in the initial preparation and final machining must be added; however, the time is substantially less than the manufacturing of a new spare part, which brings with it an increase in the availability of these spare parts to perform scheduled maintenance in the engines for power generation, contributing to improve the efficiency of the national electric system.2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Probing triple-gauge couplings in anomalous gauge theories at hadron and lepton colliders(American Physical Society, 2025-05-14)Gauge anomalous quantum field theories are inconsistent as full UV theories since they lead to the breaking of Lorentz invariance or unitarity, as well as nonrenormalizability. It is well known, however, that they can be interpreted as effective field theories (EFT) with a cutoff. The latter cannot be made arbitrarily large, and it is related to the energy scale at which additional fermions with suitable gauge charges enter, rendering the full model anomaly free. A nondecoupling effect that remains in the EFT is the appearance of anomalous loop-induced triple-gauge couplings, encapsulating information from the full UV theory. In this work, we take as an example an Abelian gauge symmetry <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi>U</a:mi> <a:mo stretchy="false">(</a:mo> <a:mn>1</a:mn> <a:msubsup> <a:mo stretchy="false">)</a:mo> <a:mi>μ</a:mi> <a:mo>′</a:mo> </a:msubsup> </a:math> under which second-generation leptons are axially charged, leading to an EFT that consists of the Standard Model (SM) with an additional massive <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"> <e:msup> <e:mi>Z</e:mi> <e:mo>′</e:mo> </e:msup> </e:math> gauge boson. As a consequence, there are triple-gauge couplings involving the <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"> <g:msup> <g:mi>Z</g:mi> <g:mo>′</g:mo> </g:msup> </g:math> and electroweak SM gauge bosons via mixed gauge anomalies. We study the possibility of probing these loop suppressed anomalous couplings at hadron and lepton colliders, with <i:math xmlns:i="http://www.w3.org/1998/Math/MathML" display="inline"> <i:mrow> <i:msup> <i:mrow> <i:mi>Z</i:mi> </i:mrow> <i:mrow> <i:mo>′</i:mo> </i:mrow> </i:msup> </i:mrow> </i:math> -lepton couplings allowed by current experimental bounds, finding that due to the large SM backgrounds and small signal, the HL-LHC is incapable of this task. The 100 TeV <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"> <k:mi>p</k:mi> <k:mi>p</k:mi> </k:math> collider at <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="inline"> <m:mi mathvariant="script">L</m:mi> <m:mo>=</m:mo> <m:mn>20</m:mn> <m:mtext> </m:mtext> <m:mtext> </m:mtext> <m:msup> <m:mi>ab</m:mi> <m:mrow> <m:mo>−</m:mo> <m:mn>1</m:mn> </m:mrow> </m:msup> </m:math> on the other hand could probe anomalous couplings for <p:math xmlns:p="http://www.w3.org/1998/Math/MathML" display="inline"> <p:mrow> <p:msub> <p:mrow> <p:mi>m</p:mi> </p:mrow> <p:mrow> <p:msup> <p:mrow> <p:mi>Z</p:mi> </p:mrow> <p:mrow> <p:mo>′</p:mo> </p:mrow> </p:msup> </p:mrow> </p:msub> <p:mo>∈</p:mo> <p:mo stretchy="false">[</p:mo> <p:mn>150</p:mn> <p:mo>,</p:mo> <p:mn>800</p:mn> <p:mo stretchy="false">]</p:mo> <p:mtext> </p:mtext> <p:mtext> </p:mtext> <p:mi>GeV</p:mi> </p:mrow> </p:math> and obtain discovery significances for <t:math xmlns:t="http://www.w3.org/1998/Math/MathML" display="inline"> <t:msub> <t:mi>m</t:mi> <t:msup> <t:mi>Z</t:mi> <t:mo>′</t:mo> </t:msup> </t:msub> <t:mo>∈</t:mo> <t:mo stretchy="false">[</t:mo> <t:mn>230</t:mn> <t:mo>,</t:mo> <t:mn>330</t:mn> <t:mo stretchy="false">]</t:mo> <t:mtext> </t:mtext> <t:mtext> </t:mtext> <t:mi>GeV</t:mi> </t:math> . Lepton colliders are also well suited for probing these anomalous couplings. In particular, we show that a muon collider running at the <x:math xmlns:x="http://www.w3.org/1998/Math/MathML" display="inline"> <x:msup> <x:mi>Z</x:mi> <x:mo>′</x:mo> </x:msup> </x:math> resonance and an electron-positron collider such as CLIC with <z:math xmlns:z="http://www.w3.org/1998/Math/MathML" display="inline"> <z:msqrt> <z:mi>s</z:mi> </z:msqrt> <z:mo>=</z:mo> <z:mn>3</z:mn> <z:mtext> </z:mtext> <z:mtext> </z:mtext> <z:mi>TeV</z:mi> </z:math> can be complimentary in probing the anomalous couplings for <bb:math xmlns:bb="http://www.w3.org/1998/Math/MathML" display="inline"> <bb:msub> <bb:mi>m</bb:mi> <bb:msup> <bb:mi>Z</bb:mi> <bb:mo>′</bb:mo> </bb:msup> </bb:msub> <bb:mo>∈</bb:mo> <bb:mo stretchy="false">[</bb:mo> <bb:mn>100</bb:mn> <bb:mo>,</bb:mo> <bb:mn>700</bb:mn> <bb:mo stretchy="false">]</bb:mo> <bb:mtext> </bb:mtext> <bb:mtext> </bb:mtext> <bb:mi>GeV</bb:mi> </bb:math> , with CLIC sensitive to discovery for <fb:math xmlns:fb="http://www.w3.org/1998/Math/MathML" display="inline"> <fb:mrow> <fb:msub> <fb:mrow> <fb:mi>m</fb:mi> </fb:mrow> <fb:mrow> <fb:msup> <fb:mrow> <fb:mi>Z</fb:mi> </fb:mrow> <fb:mrow> <fb:mo>′</fb:mo> </fb:mrow> </fb:msup> </fb:mrow> </fb:msub> <fb:mo>∈</fb:mo> <fb:mo stretchy="false">[</fb:mo> <fb:mn>125</fb:mn> <fb:mo>,</fb:mo> <fb:mn>225</fb:mn> <fb:mo stretchy="false">]</fb:mo> <fb:mtext> </fb:mtext> <fb:mtext> </fb:mtext> <fb:mi>GeV</fb:mi> </fb:mrow> </fb:math> .2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Measurement of charged-current $ν_μ$ and $\barν_μ$ cross sections on hydrocarbon in a shallow inelastic scattering region(Cornell University, 2025-03-25)This MINERvA analysis is the first neutrino and antineutrino study of a shallow inelastic scattering region, which is the transition region between resonant production and deep inelastic scattering processes. This transition is explicitly included in this study by expanding the scope of shallow inelastic scattering to include not only the mainly lower-$Q^2$ nonresonant pion production but also the kinematic region where pion production off quarks within the nucleon becomes significant with $Q^2$ below the onset of the deep-inelastic scattering region defined in this analysis. To reduce the resonance background the kinematic region 1.5 $<$ $W$ $<$ 2 GeV/$c^2$ was chosen. In addition to the inclusive differential cross section measurements, to emphasize SIS interactions off quarks within the nucleon a sample with $Q^2$ $\geq$ 1 GeV/$c^2$ was also analyzed. The measurements of one-dimensional cross sections at $\left\langle E_ν\right\rangle \sim 6$ GeV on hydrocarbon of $Q^2$, Bjorken x and muon momentum variables are compared with modified predictions from the GENIE 2 neutrino generator as well as predictions of other neutrino simulators GiBUU, NEUT, NuWro and an alternative GENIE 3 version. Significant discrepancies both in shape and magnitude between measurements and neutrino simulator predictions of all variables have been observed.9 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, EEnergy Efficiency Analysis of an Electric Furnace through the Implementation of a Forced Convection Fan(2025-07-24)This study presents an energy efficiency analysis of an electric furnace used for tempering heat treatments by implementing a forced convection fan. Improving energy efficiency in industrial heating systems remains a critical challenge, driven by the need to lower operational costs and enhance sustainability. A numerical model was developed based on heat transfer mechanisms, applying computational fluid dynamics (CFD) with a mesh of 138 565 elements and a validated mesh quality factor of 4.681. The continuity, momentum, and energy conservation equations were analyzed under real operating conditions. Results indicated that the maximum temperature increased from 290 to 327.2 K with the addition of the fan, while electrical consumption rose by only 1.54%, corresponding to an additional cost of merely USD 0.0005 per operating cycle. This thermal enhancement promotes greater temperature uniformity and reduces operational times. Consequently, integrating a forced convection system in industrial electric furnaces proves to be a technically and economically viable strategy.2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, D0-meson-tagged jet axes difference in proton-proton collisions at √s = 5.02 TeV(American Physical Society, 2025-01-01)Heavy-flavor quarks produced in proton-proton (pp) collisions provide a unique opportunity to investigate the evolution of quark-initiated parton showers from initial hard scatterings to final-state hadrons. By examining jets that contain heavy-flavor hadrons, this study explores the effects of both perturbative and nonperturbative QCD on jet formation and structure. The angular differences between various jet axes, <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi mathvariant="normal">Δ</a:mi> <a:msub> <a:mi>R</a:mi> <a:mrow> <a:mi>axis</a:mi> </a:mrow> </a:msub> </a:math> , offer insight into the radiation patterns and fragmentation of charm quarks. The first measurement of <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"> <d:msup> <d:mi>D</d:mi> <d:mn>0</d:mn> </d:msup> </d:math> -tagged jet axes differences in pp collisions at <f:math xmlns:f="http://www.w3.org/1998/Math/MathML" display="inline"> <f:msqrt> <f:mi>s</f:mi> </f:msqrt> <f:mo>=</f:mo> <f:mn>5.02</f:mn> <f:mtext> </f:mtext> <f:mtext> </f:mtext> <f:mi>TeV</f:mi> </f:math> by the ALICE experiment at the LHC is presented for jets with transverse momentum <h:math xmlns:h="http://www.w3.org/1998/Math/MathML" display="inline"> <h:msubsup> <h:mi>p</h:mi> <h:mi mathvariant="normal">T</h:mi> <h:mtext>ch jet</h:mtext> </h:msubsup> <h:mo>≥</h:mo> <h:mn>10</h:mn> <h:mtext> </h:mtext> <h:mtext> </h:mtext> <h:mi>GeV</h:mi> <h:mo>/</h:mo> <h:mi>c</h:mi> </h:math> and <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"> <k:msup> <k:mi>D</k:mi> <k:mn>0</k:mn> </k:msup> </k:math> mesons with <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="inline"> <m:mrow> <m:msubsup> <m:mrow> <m:mi>p</m:mi> </m:mrow> <m:mrow> <m:mi mathvariant="normal">T</m:mi> </m:mrow> <m:mrow> <m:msup> <m:mrow> <m:mi mathvariant="normal">D</m:mi> </m:mrow> <m:mrow> <m:mn>0</m:mn> </m:mrow> </m:msup> </m:mrow> </m:msubsup> <m:mo>≥</m:mo> <m:mn>5</m:mn> <m:mtext> </m:mtext> <m:mtext> </m:mtext> <m:mi>GeV</m:mi> <m:mo>/</m:mo> <m:mi>c</m:mi> </m:mrow> </m:math> . In this <q:math xmlns:q="http://www.w3.org/1998/Math/MathML" display="inline"> <q:msup> <q:mi>D</q:mi> <q:mn>0</q:mn> </q:msup> </q:math> -meson-tagged jet measurement, three jet axis definitions, each with different sensitivities to soft, wide-angle radiation, are used: the standard axis, soft drop groomed axis, and winner-takes-all axis. Measurements of the radial distributions of <s:math xmlns:s="http://www.w3.org/1998/Math/MathML" display="inline"> <s:msup> <s:mi>D</s:mi> <s:mn>0</s:mn> </s:msup> </s:math> mesons with respect to the jet axes, <u:math xmlns:u="http://www.w3.org/1998/Math/MathML" display="inline"> <u:mrow> <u:mi mathvariant="normal">Δ</u:mi> <u:msub> <u:mrow> <u:mi>R</u:mi> </u:mrow> <u:mrow> <u:mrow> <u:mi>axis</u:mi> </u:mrow> <u:mtext>−</u:mtext> <u:msup> <u:mrow> <u:mi mathvariant="normal">D</u:mi> </u:mrow> <u:mrow> <u:mn>0</u:mn> </u:mrow> </u:msup> </u:mrow> </u:msub> </u:mrow> </u:math> , are reported, along with the angle, <y:math xmlns:y="http://www.w3.org/1998/Math/MathML" display="inline"> <y:mi mathvariant="normal">Δ</y:mi> <y:msub> <y:mi>R</y:mi> <y:mrow> <y:mi>axis</y:mi> </y:mrow> </y:msub> </y:math> , between the three jet axes. The <bb:math xmlns:bb="http://www.w3.org/1998/Math/MathML" display="inline"> <bb:msup> <bb:mi>D</bb:mi> <bb:mn>0</bb:mn> </bb:msup> </bb:math> meson emerges as the leading particle in these jets, closely aligning with the winner-takes-all axis and diverging from the standard jet axis. The results also examine how varying the sensitivity to soft radiation with grooming influences the orientation of the soft drop jet axis and uncover that charm-jet structure is more likely to survive grooming when the soft drop axis is further from the <db:math xmlns:db="http://www.w3.org/1998/Math/MathML" display="inline"> <db:msup> <db:mi>D</db:mi> <db:mn>0</db:mn> </db:msup> </db:math> direction, providing further evidence of the dead-cone effect recently measured by ALICE.3 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Addendum: Dielectron production in proton-proton and proton-lead collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mrow> <mml:mi>N</mml:mi> <mml:mi>N</mml:mi> </mml:mrow> </mml:msub> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>5.02</mml:mn> <mml:mspace width="0.16em"/> <mml:mi>TeV</mml:mi> </mml:mrow> </mml:math>(American Institute of Physics Inc., 2025-02-07)This is an addendum to the article “Dielectron production in proton-proton and proton-lead collisions at <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"> <a:mrow> <a:msqrt> <a:msub> <a:mi>s</a:mi> <a:mi>NN</a:mi> </a:msub> </a:msqrt> <a:mo>=</a:mo> <a:mn>5.02</a:mn> <a:mspace width="0.16em"/> <a:mi>TeV</a:mi> </a:mrow> </a:math> ” published in ]. We update the extracted charm cross section at midrapidity given in Table III and Fig. 4 (left) of the original publication with the fragmentation fractions of charm quarks in <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"> <c:mrow> <c:mi>p</c:mi> <c:mi>p</c:mi> </c:mrow> </c:math> collisions published in ].6 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Thermally Tunable Bi-Functional Metasurface Based on InSb for Terahertz Applications(Multidisciplinary Digital Publishing Institute (MDPI), 2025)In this work, we propose and analyze a thermally tunable metasurface based on indium antimonide (InSb), designed to operate in the terahertz (THz) frequency range. The metasurface exhibits dual functionalities: single-band perfect absorption and efficient polarization conversion, enabled by the temperature-dependent permittivity of InSb. At approximately 280 K, InSb transitions into a metallic state, enabling the metasurface to achieve near-unity absorptance (100%) at 0.408 THz under normal incidence, independent of polarization. Conversely, when InSb behaves as a dielectric at 200 K, the metasurface operates as an efficient polarization converter. By exploiting structural anisotropy, it achieves a polarization conversion ratio exceeding 85% over the frequency range from 0.56 to 0.93 THz, while maintaining stable performance for incident angles up to 45°. Parametric analyses show that the resonance frequency and absorption intensity can be effectively tuned by varying the InSb square size and the silica (SiO₂) layer thickness, achieving maximum absorptance at a SiO₂ thickness of 16 μm. The proposed tunable metasurface offers significant potential for applications in THz sensing, imaging, filtering, and wavefront engineering.4