From the Guest Editors by Fred Brauer, Carlos Castillo-Chavez, Thomas G. Hallam, Jia Li, Jianhong Wu, Yicang Zhou

“…Hence, it is not surprising to see his shift from an outstanding contributor to the field of dynamical systems to a pioneer in the field of mathematical biology. Zhien's vision and courage became evident when he abandoned a promising career in pure mathematics and enthusiastically embraced a career in the field of mathematical biology soon after his first visit to the United States in 1985. …”
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Examining Primary School Principals’ Instructional Leadership Practices: A Case Study on Curriculum Reform and Implementation by Moeketsi David Ralebese, Loyiso Jita, Olalekan Taofeek Badmus

“…They engage in reflective practices such as meetings and retreats to reinforce the school’s vision among teachers, manage instructional programs through routine and random checks, motivate teachers with positive feedback, and promote a positive climate by supporting social cohesion and addressing teachers’ personal needs. …”
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Retained multiple contact lenses in a vulnerable dementia patient by Rohit SHARMA, Zuhair SHARIF

“…We report a case of an 85-year-old female nursing home resident with a background of dementia, who pre- sented to the eye casualty clinic complaining of an 8-month history of a painful red eye and reduced vision. Treated ‘on and off ’ by various doctors and healthcare professionals with antibiotic drops for eight months with no improvement. …”
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Historia, creencia y convención en Hume y en Ortega by Jaime de Salas Ortueta

“…A ello se añade una aproximación entre los dos autores en la medida en que los dos desarrollan teorías de la creencia o convención que constituyen de manera importante la llave metodológica en su visión de la historia. Hume llega a la noción de convención muy tempranamente en el Tratado sobre la Naturaleza Humana, mientras que en el caso de Ortega la aparición de la teoría de la creencia es posterior a la contraposición entre minorías y masa y su muy influyente España Invertebrada. …”
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Identificación de indicadores de impacto en un programa de gobierno y modos de vida rurales by William Gómez Demetrio, Octavio Alonso Castelán Ortega, Gabino Nava Bernal, Ernesto Sánchez Vera

“…Se concluyó que no existe suficiente evidencia para comprobar la operatividad funcional de las normas de operación oficiales, existe una tendencia del fomento al desarrollo rural mediante un enfoque territorial con una visión productiva. Los resultados denotan la presencia de indicadores sociales, económicos y ambientales consolidados y otros que interactúan entre sí, que no han sido considerados por la burocracia al determinar cómo evaluar el impacto del PAPIR. …”
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En voz de uno: fundación e interacción de una cofradía mestiza en el nororiente de la Nueva Granada (1625-1650) by María del Pilar Monroy Merchán

“…El artículo analiza cómo la fundación de la cofradía no respondió a un proceso de coacción de los grupos indígenas por parte del orden hispánico, alejados de esta visión se considera que ambos grupos étnicos “convivieron” en la corporación al identificarse con la lógica de pensamiento subjetivista. …”
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Personal factors of self-governance among security and defence sector personnel in Ukraine (on the example of the National Guard of Ukraine) by D. O. Slurdenko, O. H. Pavlova

“…Their emotional stability allows them to maintain clarity in the vision of the goals of their activities. It has been found that servicemen of the National Guard of Ukraine who did not participate in hostilities are more capable of self-government if they are confident in the correctness of what they do and are able to apply the professional knowledge they have acquired in changing circumstances. …”
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Case Report of Optic Disc Drusen with Simultaneous Peripapillary Subretinal Hemorrhage and Central Retinal Vein Occlusion by David Zhiwei Law, Francine Pei Lin Yang, Stephen Charn Beng Teoh

“…Ultrasound B-scan revealed optic disc drusen (ODD). In view of good vision and absence of CNV, he was managed conservatively with spontaneous resolution after two months. …”
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Piggy Back primario: una alternativa en la cirugía de pacientes portadores de hipermetropías elevadas. Presentación de un caso by Armando Rafael Milanés Armengol, Katia Molina Castellanos, Alina González Díaz

“…Se presenta el caso de un paciente masculino de 45 años de edad con antecedentes patológicos personales oculares de hipermetropía elevada en ambos ojos; es un trabajador agrícola, el cual manifestó serias dificultades para la adaptación a sus cristales ya que le pesan mucho y su visión es borrosa con ellos, por lo que los cambia con frecuencia. …”
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Forward Models Applied in Visual Servoing for a Reaching Task in the iCub Humanoid Robot by Daniel Fernando Tello Gamarra, Lord Kenneth Pinpin, Cecilia Laschi, Paolo Dario

“…The reaching task must be accomplished by a humanoid robot with 53 degrees of freedom (d.o.f.) and a stereo-vision system. We have explored via simulations a new way of constructing and utilizing a forward model that encodes eye–hand relationships. …”
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Idiopathic Bilateral Suprachoroidal Haemorrhage: A Rare Case Presentation by Komal Saluja, Mayuresh Naik, Rajshekhar Vemparala, Anuj Mehta

“…55-year-old male presented with sudden onset painful diminution of vision in both eyes. On local examination, his visual acuity was FC at 2 metres in right eye and FC at 1 m in left eye. …”
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RatDNA: DATABASE ON MICROARRAY STUDIES OF RATS BEARING GENES ASSOCIATED WITH AGE-RELATED DISEASES by O. S. Kozhevnikova, M. K. Martyschenko, M. A. Genaev, E. E. Korbolina, N. A. Muraleva, N. G. Kolosova, Y. L. Orlov

“…Age-related macular degeneration (AMD) becomes the main cause of vision problems and sight loss in people aged above 50. …”
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Promotion of physical activity-related health competence using digital workplace-based health promotion: a pilot study for office workers by Leonard Oppermann, Marie-Luise Dierks

“…Therefore, time- and location-independent interventions for increasing HEPA are necessary.MethodsTo achieve long-term changes in HEPA, interventions can be based on physical activity-related health competence (PAHCO). 48 office workers (83% female, 50 ± 8 years) completed an intervention consisting of bi-weekly exercise videos for 5 weeks, supplemented by PAHCO and anatomical education. …”
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Oferta institucional y marginación social. Experiencias de un grupo de bordadoras en Tesopaco, Sonora by Araceli del Carmen Andablo Reyes, María del Carmen Hernández Moreno

“…Si bien, el cambio en la visión gubernamental sobre el desarrollo rural abre áreas de oportunidad para los pobres, la oferta institucional todavía está lejos de cumplir con lo que ofrece la LDRS. …”
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Impact of COVID-19 on Ocular Surface Health: Infection Mechanisms, Immune Modulation, and Inflammatory Responses by Duliurui Huang, Weixia Xuan, Zhijie Li

“…Ocular symptoms, though uncommon, include conjunctivitis, dry eye, and blurred vision. SARS-CoV-2 binds to ACE2 receptors in ocular surface epithelial cells, facilitating viral entry, replication, and local dissemination. …”
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La solución al problema de las drogas ilícitas en la construcción de paz. Desafíos en la implementación del Programa Nacional Integral de Sustitución de Cultivos Ilícitos (PNIS) en... by Silvia Mantilla, Tania Gisel Sastoque, Sofía Quintero

“…Esto se ha expresado en el corto plazo (2016-2020) a través de dos variables: a) la focalización del gasto como solución al problema de los cultivos y b) la participación comunitaria y legitimadora de la visión liberal en la implementación de los acuerdos colectivos y territoriales.…”
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Statistical measurement of behavioral effects based on multimodal data by Suyan Tan, Yunyi Zhao, Jinjun Wang, Jia Fang

“…In order to demonstrate the role of multimodal data in behavioral effect assessment, the teaching effect of English classroom presentations at a comprehensive university in China is taken as a case study, and the effect of the target behavior was statistically measured based on multimodal data such as students' classroom behavioral videos, images, questionnaires, interviews, and assessment data. …”
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Assessment of the quality of service in the field of real estate transactions: modern methodological approaches by N. M. Kalinina, E. V. Khrapova

“…The authors summarized the existing methods for determining the estimated value of the service quality indicator, and outlined the subjective aspects of the considered methods. The author’s vision of the methodological support for establishing the estimated values of service quality indicators in the field of real estate transactions is proposed.…”
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Federico Gerdes en los 150 años de su nacimiento y 70 de su deceso: Una aproximación by Aurelio Tello Malpartida

“…Extendió, hasta el fin de sus días, la visión romántica de la música en la que se había formado. …”
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Derechos humanos, buenas prácticas y responsabilidad social. Aproximación cualitativa en empresas familiares by Argentina Soto Maciel, Odra Angélica Saucedo Delgado

“…La interrelación de estos conceptos se aborda desde la perspectiva teórica del modelo bidimensional de la responsabilidad social empresarial, el cual permite discriminar las prácticas laborales en función de la visión y el costo-beneficio que representan para la empresa. …”
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