Non-Hermitian robust edge states in one-dimension: Anomalous localization and eigenspace condensation at exceptional points

Capital to topological insulators, the bulk-boundary correspondence ties a topological invariant computed from the bulk (extended) states with those at the boundary, which are hence robust to disorder. Here we put forward an ordering unique to non-Hermitian lattices, whereby a pristine system becomes devoid of extended states, a property which turns out to be robust to disorder. This is enabled by a peculiar type of non-Hermitian degeneracy where a macroscopic fraction of the states coalesce at a single point with geometrical multiplicity of $1$, that we call a phenomenal point.Comment: 6 pages, 4 figure

Animal behaviour: Shifting attention in order to disperse

New findings in the nematode Caenorhabditis elegans identify neuromodulation of behavioural responses to pheromones as a mechanism for regulating dispersal and foraging strategies

Formulación de un aderezo a base de zapallo loche utilizando criterios de conservación y aceptación sensorial

In this investigation, a dressing based on loche squash was developed. Initially, nine formulations ere designed, being acidified with acetic acid until reaching a pH of 4.4. Sensory analyses were performed in four sessions by an untrained panel which assessed the characteristics of the formulations: appearance, aroma and flavor, the formulation with the highest degree of satisfaction being determined through the Analysis of Variance (ANOVA) and the Least Significant Difference (LSD) tests. Then, the formulation of greater satisfaction was subjected to three different heat treatments: 85°C for 10 min, 90°C for 6 minutes and 95°C for 3 minutes. Finally, two quality criteria were evaluated: Microbiological (mesophilic viable microorganisms) and enzymatic (pectinesterase), choosing the treatment of 90 °C for 6 minutes, which was subjected to physical and chemical tests. As a result, a loche squash dressing was obtained, preserving its initial organoleptic characteristics and achieving a safe product of good taste.En esta investigación se desarrolló un aderezo a base de zapallo loche; diseñándose nueve formulaciones iniciales, las cuales fueron acidificadas con ácido acético hasta llegar a un pH de 4.4. Se realizaron análisis sensoriales, donde jueces no entrenados, evaluaron en 4 sesiones los atributos de las formulaciones: Apariencia, aroma y sabor; determinando la formulación con mayor grado de satisfacción, a través  de Análisis de varianza (ANOVA) y Diferencia mínima significativa (DMS). Por consiguiente, la formulación de mayor grado de satisfacción, fue sometida a tres diferentes tratamientos térmicos: 85º C a 10 minutos; 90º C a 6 minutos y  95º C a 3 minutos.  Por último, se evaluaron dos criterios de calidad: Microbiológicos (microorganismos mesófilos viables) y enzimático (pectinesterasa), escogiendo el tratamiento de 90º C por 6 minutos, siendo sometido a pruebas físicas y químicas. Como resultado, se obtuvo un aderezo a base de zapallo loche, conservando características organolépticas iniciales y logrando un producto inocuo de  agradable sabor

Pinusong sa Panahon ng “Veerus”: Ang Tula sa Internet Bilang Kontra-Pusong

Naglalayong mailantad ng papel na ito ang mga tula sa internet na may katangiang pinusong at maitanghal ang mga ito bilang kontra-pusong sa panahon ng “veerus” o panahon ng pandemya sa ilalim ng pamamahala ni Duterte, na kinikilala rin bilang “pinunong pusong” (sovereign trickster) ayon kay Vicente Rafael. Gamit ang teoryang carnivalesque ni Mikhail Bahktin, binasa ang mga tula ng makatang pusong sa layuning mailantad ang gawaing pagbabaligtad at pagtumba ng kaayusan bilang politikal na proyekto ng pagbalikwas sa diskurso ng “veerus” na siyang kinokonstrak ng “pinunong pusong.” Sa tradisyonal na pagbasa ng pinusong, ipinalalabas na ito ay karaniwang gawaing pangungutya at pagbabaligtad ng mababang uri ng kaayusang pumapabor sa naghaharing uri. Subalit lumalabas na ang mga tulang isinulat bilang pinusong ay maaaring hindi limitado sa artikulasyon ng mababang uri sa dahilang ang mga ito ay markado ng pagiging edukado at pagkakaroon ng modernong rasyonalidad ng makatang sumulat. Batay sa naunang konstruksiyon ng “pinunong pusong,” ang mga binasang tula ay maituturing nang kontra-pusong at maituturing nang taliwas sa tradisyonal na konsepto ng pusong sa kabila ng pagpapatuloy pa rin ng pinusong na praktis ng pagtatanghal ng mali, ng pangit, ng madugo, ng bastos, at ng pagpapalusot.unang ipinasa: 29 Setyembre 2020tinanggap para sa publikasyon: 25 Nobyembre 202

Payments for Pioneers? Revisiting the Role of External Rewards for Sustainable Innovation under Heterogeneous Motivations

© 2017, Elsevier Acknowledging the diversity of preferences, goals and motivations of individuals is key to promote the effectiveness of incentive-based conservation interventions. This paper analyses the heterogeneity of motivations to adopt silvopastoral practices, a social-ecological innovation for soil conservation and carbon emission reduction. We use Q methodology to identify smallholders' views with regard to these practices in a community in the forest frontier in Chiapas (Mexico). The analysis uncovers three main perspectives: self-sufficient pioneers, environmentally-conscious followers and payment-dependent conservatives. We discuss these perspectives around three topics: smallholders' predisposition to adopt silvopastoral practices, their views about needing external payments to sustain their livelihood and the diffusion of innovative sustainable practices. We relate these perspectives with livelihood characteristics and with observed adoption levels under a pilot programme to promote silvopasture. Our findings suggest that incentives other than payments may be more appropriate for those more likely to adopt, and that payments could encourage rent-seeking strategies and not necessarily promote permanent behavioural change. We suggest ways for designing more effective and adaptive environmental conservation programmes to foster adoption and continuation of social-ecological innovations