bluuebunny/crossref_metadata_2025_split huggingface dataset:
Minimal Kähler submanifolds in product of space forms
Authors: de Carvalho Alcides , Domingos Iury 
Published: May 2023

Abstract
In this article, we study minimal isometric immersions of Kähler manifolds into product of two real space forms. We analyse the obstruction conditions to the existence of pluriharmonic isometric immersions of a Kähler manifold into those spaces and we prove that the only ones into

𝕊

m
-
1

×
ℝ

{\mathbb{S}^{m-1}\times\mathbb{R}}

and

ℍ

m
-
1

×
ℝ

{\mathbb{H}^{m-1}\times\mathbb{R}}

are the minimal isometric immersions of Riemannian surfaces. Furthermore, we show that the existence of a minimal isometric immersion of a Kähler manifold

M

2
⁢
n

{M^{2n}}

into

𝕊

m
-
1

×
ℝ

{\mathbb{S}^{m-1}\times\mathbb{R}}

and

𝕊

m
-
k

×

ℍ
k

{\mathbb{S}^{m-k}\times\mathbb{H}^{k}}

imposes strong restrictions on the Ricci and scalar curvatures of

M

2
⁢
n

{M^{2n}}

. In this direction, we characterise some cases as either isometric immersions with parallel second fundamental form or anti-pluriharmonic isometric immersions.
The game model with multi-task for image denoising and edge extraction
Authors: Wei Wenyang , Feng Xiangchu , Wei Bingzhe 
Published: May 2023

Abstract
Image denoising and edge extraction are two main tasks in image processing. In this paper, a game model is proposed to solve the image denoising and edge extraction, which combines an adaptive improved total variation (AdITV) model for image denoising and a global sparse gradient (GSG) model for edge extraction.
The AdITV model is a forward-and-backward diffusion model. In fact, forward diffusion is applied to the homogeneous region to denoise, and backward diffusion is applied to the edge region to enhance the edge. A unified explicit discrete scheme is established in this paper to solve the AdITV model, which is compatible to forward diffusion and backward diffusion. The stability of the scheme is proved. On the other hand, GSG is a functional model based on sparse representation, which is robust to extract edges under the influence of noise. AdITV and GSG are chosen as two components of the game model. The alternate iteration method is used to solve the game problem. The convergence of the algorithm is proved and numerical experiments show the effectiveness of the model.
Technical efficiency changes of rice farming in the favorable irrigated areas of Indonesia
Authors: Sumaryanto S. , Susilowati Sri Hery , Saptana S. , Sayaka Bambang , Suryani Erma , Agustian Adang , Ashari A. , Purba Helena Juliani , Sumedi S. , Dermoredjo Saktyanu Kristyantoadi , Purwantini Tri Bastuti , Yofa Rangga Ditya , Pasaribu Sahat Marulitua 
Published: May 2023

Abstract
The main sources of rice production growth are increases in the yield and area harvested. Yield improvement is carried out through intensification, mainly using more inputs and better irrigation, while increasing the harvested area is associated with increasing the cropping intensity. Unfortunately, even in favorable irrigated areas, outcomes of the coupled approach are not always synergistic. This study aims to assess technical efficiency (TE), its changes in direction, and the factors responsible for inefficiency during the last 10 years. The data analyzed were those of rice farming through a panel survey of farmer households in several villages with favorable irrigation. The survey was conducted in 2010, 2016, and 2021. The results showed that the use of higher seed quality and inorganic fertilizers positively affected the yield. The TE level was relatively high but tended to degrade in these 3 years. The farmers’ TE in Java Island was higher than that outside Java. The older the farmer, the more inefficient the farmer was. The number of family members working in rice farming negatively affected efficiency. TE increased as the agricultural contribution to household income increased. On the other hand, the farmers’ educational background did not significantly affect TE. Based on these findings, it is recommended to encourage farmers to adopt higher quality seeds of improved rice varieties. It is also urgent to encourage young farmers to pursue rice farming as their main profession. In the middle and long term, breeding improved rice varieties adapted to climate stress will become a pressing need.
Crystal structure of 9,10-bis-((perchloro-phenyl)-ethynyl)anthracene determined from three-dimensional electron diffraction data
Authors: Gorelik Tatiana E. , Ulmer Andreas , Schleper A. Lennart , Kuehne Alexander J.C. 
Published: May 2023

Abstract
The crystal structure of the title compound was determined using electron diffraction data collected in continuous rotation mode. The structure was successfully solved and refined kinematically in the monoclinic space group P21/c, with a Z value of 2 and Z′ value of 0.5. Within the crystal structure, the entire molecule is predominantly flat. The molecular packing exhibits a herringbone pattern, distinct from that of the unchlorinated analogue molecule. The largest facet of the crystals, which faces the supporting carbon film, is designated as (0

1
‾

1
‾

$\bar{1}\bar{1}$

).
Types and Sources of Antioxidants that Role in Determining Fertility Level
Authors: Winarni Sri , Udijono Ari , Mawarni Atik , Dharminto Dharminto , Kujariningrum Oktavia Beni , Azizah Waviq 
Published: May 2023

Lifestyle and exposure of free radicals affect in a person’s fertility. ROS (Reactive Oxygen Species) in excess can caused oxidative stress and DNA damage (deoxyribonucleic acid). Adequate intake of antioxidants is needed to maintain ROS level. This review’s aim is determine the types and sources of antioxidants that play a role in determining a person’s fertility level. This research is a narrative review using a literature review method by collecting and concluding data from previous studies. The search for previous research articles was carried out on the Scopus, Science Direct, Clinical Key, SpringerLink, BMC and Google Schoolar portals with keywords in the form is foodstuffs, antioxidants, and infertility which found 8,745 articles. Total of 75 articles met the inclusion-exclusion criteria for used in writing this article. The research was conducted in 2022. Most antioxidants take a role in determining male fertility, such as glutathione, selenium, carotenoids (beta-cryptoxanthin, lycopene, beta-carotene and lutein), zinc, vitamin C, vitamin E, and flavonoids. NAM (Nicotinamide) and carvacrol play a role in determining female fertility. These antioxidants can be found in fruits, vegetables, protein sources and several other plants. Consumption of antioxidant sources is highly recommended to increase fertility, especially for infertile couples.
San Isidoro: La Salud y la Actividad Física
Authors: GARCÍA MORILLA Santiago , ÁLVAREZ DEL PALACIO Eduardo 
Published: May 2023

Desde Galeno hasta nuestros días no son demasiadas los estudios bibliográficos y de investigación dedicados a los orígenes de la Actividad Física a través de la rama de la salud. Lo que aquí se pone de manifiesto son unas valiosas fuentes desde el punto de vista de la medicina y de la anatomía, en un período de la historia aún más valioso como es la Edad Media. Nos encontramos ante un autor de excepción por su trascendencia y una obra única por su contenido y concepción; se trata de un repaso a las Ciencias de la Actividad Física y del Deporte a través de las Etimologías de San Isidoro.Palabras Clave; San Isidoro, Etimologías, medicina, anatomía, actividad física, salud. ST. ISIDORE, THE HEALTH AND PHYSICAL ACTIVITY From Galen until our days are not too many bibliographic studies and research devoted to the origins of physical activity through health branch. What is revealed here are some valuable sources from the point of view of medicine and anatomy especially in a period of history is even more valuable as the Middle Ages. We are facing an author of emergency due to its significance and a unique work in content and design, a review of physical activity sciences through the Etymologies of St. Isidore.Key words ;St. Isidore, Etymologies, medicine, anatomy, physical activity, health
Olimpismo y Deporte: consideraciones en torno a unas complejas y difíciles relaciones en el marco de la sociedad actual
Authors: VELÁZQUEZ BUENDÍA Roberto 
Published: May 2023

El principal problema que tiene ante sí el Olimpismo se encuentra sobre todo en el hecho de que si, por un lado, es el deporte el medio a través del cual pretende dar curso a sus propósitos formativos, humanísticos, pacifistas y democráticos, por otro lado, la propia realidad del deporte actual dista mucho de la que debería ser para que pudiera servir a tales propósitos. Son muchas y muy poderosas las fuerzas económicas, sociales y políticas que tratan de condicionarlo y de moldearlo de la manera que mejor pueda servir a sus fines los cuales muy pocas veces son de interés general, por lo que más que un medio de mejora y bienestar personal y social, el deporte se ha venido configurando como un instrumento al servicio de tales fuerzas políticas y económicas. Tal utilización del deporte dificulta notablemente el cumplimiento de funciones de transformación y mejora social como las que pretende asignarle el Olimpismo.Palabras clave: Olimpismo, deporte, Movimiento Olímpico OLYMPISM AND SPORT: CONSIDERATIONS SURROUNDING COMPLEX AND DIFFICULT RELATIONSHIPS IN THE CONTEXT OF TODAY'S SOCIETY The main problem facing the Olympic movement lies primarily in the fact that if, on the one hand, sport is the means through which to foster formative, humanistic, democratic, and pacifist purposes, on the other hand, the reality of the current sport is a long way from being able to serve such purposes. Many arethe powerful economic, social and political forces trying to condition it and shape it the way so as to better serve their own purposes, which seldom coincide with the general interest. As such, more than a means of improvement of personal and social wellness, sport has become an instrument at the service of such political and economic forces. This use of the sport greatly hinders social transformation in the ways soughtby Olympism.Keywords: Olympism, sport, Olympic Movement.
La Tregua Olímpica. La paz inspirada por el deporte, el deporte inspirado por la paz
Authors: PALLIS Dora 
Published: May 2023

Este documento se centra en el antiguo concepto de Tregua Olímpica, su aplicación moderna y las actividades que realiza el Centro Internacional de la Tregua Olímpica (CITO). Se examinan los logros conseguidos, las actividades realizadas y los planes estratégicos para el futuro. Se centra la atención en cómo pueden adoptarse globalmente los valores del olimpismo y de la tregua olímpica, y qué relevancia tiene hoy en día la Tregua Olímpica. Ahora que los Juegos Olímpicos y Paralímpicos de Londres han concluido, tenemos una buena oportunidad para pensar cómo pueden estos acontecimientos mejorar la vida de la población e influir en el mundo; analizar cómo los valores de respeto, igualdad, inclusión y paz integrados en el Movimiento Olímpico han influido en el mundo; cómo el verdadero espíritu de los Juegos Olímpicos, del que fuimos testigos hace unos meses, puede ayudar al mundo a imaginar la paz.Palabras clave: Olimpismo, Tregua Olímpica, valores olímpicos, Centro Internacional de la Tregua Olímpica, paz, deportes, diversidad. OLYMPIC TRUCE. PEACE INSPIRED BY SPORT, SPORT INSPIRED BY PEACEThis paper focuses on the ancient concept of the Olympic Truce, its modern day implementation and the activities undertaken by the International Olympic Truce Centre (IOTC). I explore the achievements that have been made, the activities undertaken and the strategic plans for the future. The focus is on how the values of olympism and olympic truce can be globally adopted, and how the Olympic Truce can be relevant today. Now that the London Olympic and Paralympic Games have come to an end, it is a good opportunity to consider how these events can improve people's lives and impact the world. To explore how the values of respect, equality, inclusion and peace incorporated in the Olympic movement had an impact in the world. How the true spirit of the Olympic Games ,that we witnessed a few months ago, can help the world to imagine peace.Key words: Olympism, Olympic Truce, Olympic values, International Olympic Truce Centre, peace, sports, diversity.
El Comité Olímpico Español: un siglo de historia
Authors: DURÁNTEZ CORRAL Conrado 
Published: May 2023

Los Comités Olímpicos Nacionales tuvieron unos procesos de nacimiento, evolución y consolidación que implicaron generalmente azarosas historias. Las dificultades iniciales fueron generadas de una parte por la incomprensión del ideario filosófico que planteaba Pierre de Coubertin, y de otra, por la normal falta de apoyo oficial que estaba acompañada de la transitoriedad operativa de su acción, ya que los Comités se formaban para los Juegos Olímpicos de una Olimpiada concreta. La evolución histórica del Comité Olímpico Español no fue ajena a la misma pauta y los avatares políticos e históricos le llevaron a dejar de existir a finales de 1921, después de la muerte de su fundador, el Marqués de Villamejor, reconstituyéndose en 1924 en Barcelona a instancias del Barón de Güell. El presente artículo recopila y recoge los resultados del trabajo de investigación llevado a cabo sobre la base de las fuentes primarias que obran en los archivos del Comité Olímpico Internacional y del Comité Olímpico Español. Las conclusiones de dicho trabajo han llevado a precisar como fecha de fundación del COE la del 25 de noviembre de 1912. Esta fecha le sitúa en el número 14 del orden fundacional de los 205 Comités Olímpicos Nacionales que hoy existen. Palabras clave: Historia del Comité Olímpico Español, Movimiento Olímpico THE SPANISH OLYMPIC COMMITTEE: A CENTURY OF HISTORY The National Olympic Committees were born, evolved and consolidated in such a way that their histories are usually somewhat unfortunate. On one hand, the initial difficulties were caused by the misinterpretation of the philosophical ideology proposed by Pierre de Coubertin, and on the other hand, they were caused by a general lack of official support, accompanied by the temporary nature of their activities, considering that the Committees were set up for the Olympic Games of one specific Olympiad. The historical evolution of the Spanish Olympic Committee also followed this pattern and due to both the political and historical vicissitudes, at the end of 1921, after the death of its founder, the Marqués de Villamejor, the Spanish Olympic Committee ceased to exist. It was later reformed in 1924 in Barcelona at the request of Barón de Güell. The following article compiles and gathers together the results of research carried out on primary sources located in the archives of both the International Olympic Committee and the Spanish Olympic Committee. The conclusions of this research indicate that 25th November 1912 was the date on which the Spanish Olympic Committee was founded. This date brings the Spanish Olympic Committee into 14th position regarding the order in which the current 205 National Olympic Committees were founded.Key Words: History of the Spanish Olympic Committee, Olympic Movement
Expresión Artística y Olimpismo. El cartel
Authors: VIZUETE CARRIZOSA Manuel , CALZADO ALMODÓVAR Zacarías , GRAGERA ALONSO Amalia 
Published: May 2023

Aun cuando para millones de personas la información básica de los Juegos Olímpicos es el cartel anunciador de cada uno de ellos, de tal manera que, a partir de los mismos, somos capaces incluso de situar en el tiempo y el espacio los Juegos a los que corresponden, es igualmente cierto que desconocemos, en gran medida, los entornos artísticos y los autores de cada una de estas obras de arte que, formando parte de lo que se conoce como la Galería del Arte de la Calle, cada una en su tiempo, divulgaron no solo el mensaje olímpico, sino la forma de entender las actividades físicas desde un planteamiento de educación social en valores. En este trabajo se analiza la génesis del cartel, los artistas y sus entornos creativos, así como la producción artística de cada uno de ellos, en aquellos casos en que la producción de la obra de arte olímpica es consecuente con una trayectoria personal o profesional. Igualmente las formas de producción y difusión de estas obras, que han pasado desde la galería de la calle a las vitrinas de los museos y de estos a objetos de consumo o suvenir. ARTISTIC EXPRESSION AND OLYMPICS. THE POSTER Although millions of people the basics notice of the Olympic Games is the poster for each ones of them, so that, from them, we can even put in the time and space to which the Games correspond, it is equally true that we ignore, largely artistic environments and the authors of each of these works of art, part of what is known as the Gallery of Street Art, each in its time, reported not only the Olympic message, but how to understand the physical activities from a social approach to values education. This paper discusses the genesis of the poster, the artists and their creative environments and artistic production of each ones of them, in cases where the production of Olympic artwork is consistent with personal or professional trajectory. Equally forms of production and dissemination of these works, which have passed since the Street Gallery to museum cabinets and use these to objects or souvenirs.
Las competiciones olímpicas en el origen de la igualdad entre hombres y mujeres: la opinión de Myrtle Cook, periodista de Montreal, 1929-1960
Authors: DETELLIER Élise 
Published: May 2023

Myrtle Cook fue medallista de oro de atletismo en los Juegos Olímpicos de Amsterdam en 1928, miembro fundadora de asociaciones deportivas femeninas, entrenadora y periodista, Myrtle Cook (1902-1985) dedicó su vida al deporte femenino. Este trabajo trata sobre su carrera periodística que se desarrolló entre 1929 y 1960. Específicamente se centra en la manera en la que utilizó sus crónicas para hacer valer sus ideas sobre la participación de las mujeres en el deporte, es decir en la superación de las deportistas que participaban en las competiciones de alto nivel, sobre todo en los Juegos Olímpicos.Palabras clave: Juegos Olímpicos, Myrtle Cook. OLYMPIC COMPETITIONS AT THE START OF MEN AND WOMEN EQUALITY. THE VIEW OF A 1929-1960 MONTREAL JOURNALIST: MYRTLE COOK Myrtle Cook was an athletics gold medal winner in the Amsterdam Olympic Games 1928, founder member of women sport associations, trainer and journalist. Myrtle Cook (1929-1985) devoted her life to women sport. This paper deals with her career as a journalist which spanned from 1929 till 1960. It particularly focuses on the use she made of her reports to assert her own ideas on the participation of women in sport, that is to say, the strive of sport women who participated in high-performance sporting competitions, mainly in Olympic Games.Key words: Olympic Games, Myrtle Cook.
Marisol Casado: trayectoria de una gestora deportiva y olímpica
Authors: GUTIÉRREZ SÁNCHEZ Carla Belén , MARTÍNEZ GORROÑO Mª Eugenia 
Published: May 2023

Marisol Casado Estupiñán es en la actualidad una figura referente a nivel internacional en el ámbito de la gestión deportiva, dada su condición de miembro del Comité Olímpico Internacional y Presidenta de la Federación Internacional de Triatlón (International Triathlon Union) Su trayectoria se construye a partir de varias circunstancias que han marcado su devenir: Su afición al deporte y la práctica del mismo desde su niñez; su interés por las relaciones internacionales; el descubrimiento de un deporte como el triatlón, que ha pasado a ser olímpico y sigue creciendo en adeptos, y su pasión por la gestión deportiva de la que ha hecho su profesión. Su condición de mujer la hace pionera en muchos aspectos, ya que el entorno en el que desarrolla su actividad profesional sigue siendo un espacio ocupado principalmente por hombres. Hombres con los que ha sabido trabajar y de los que ha conseguido apoyos que explícitamente reconoce y agradece, tal como expresaba al relatar su historia de vida.Palabras clave: Olimpismo, mujer, gestión deportiva, historia de vida, triatlón, Marisol Casado, Comité Olímpico Internacional. MARISOL CASADO: THE CAREER OF A SPORTS AND OLYMPIC ADMINISTRATORMarisol Casado Estupiñán is currently an outstanding international figure in the field of sport management, being a member of the International Olympic Committee and President of the International Triathlon Union. Her career has developed from a series of circumstances that have guided the whole process: her interest in sport and her practising it since she was a child; her interest in international relations; her discovery of triathlon, a sport that has become Olympic and is ever getting more supporters, and her passion for sport management which has become her profession. Being a woman makes her a pioneer in many respects, since she carries out her professional activity in an environment which is largely male dominated. She has managed to make her way among men and to gain their support, which she openly admits and appreciates, when telling her life story.Key words: Olympism, woman, sport management, life story, triathlon, Marisol Casado, International Olympic Committee.
Declaración con motivo de la adopción de la resolución “creación, mediante el deporte y el ideal olímpico, de un mundo mejor en el que reine la paz”
Authors: BACH Thomas 
Published: May 2023

El presente trabajo contiene en español el discurso de Thomas Bach Presidente del Comité Olímpico Internacional ante el 86º periodo de sesiones de la Asamblea General de la ONU celebrado en Nueva York, 6 de noviembre de 2013, en el que realizó una declaración con motivo de la adopción de la resolución: “La creación, mediante el deporte y el ideal olímpico, de un mundo mejor en el que reine la paz”. La publicación de este discurso pretende acercar más su contenido a toda la comunidad de hispanohablantes, difundiéndolo en su lengua materna, a fin de servir de acercamiento a las intenciones, propuestas y gestiones que desde la estructura olímpica se promueven para contribuir a la paz.Palabras clave: Comité Olímpico Internacional, Thomas Bach, Deporte, Naciones Unidas. Statement on the occasion of the adoption of the resolution “Building a peaceful and better world through sport and the Olympic ideal” Abstract: This paper consists of the speech in Spanish by President of The International Olympic Committee, Thomas Bach, delivered during the 68th session of the UN General Assembly in New York, on 6th November 2013. It includes a declaration regarding the resolution on “Building a peaceful and better world through sport and the Olympic ideal”. The publication of this speech seeks to bring its contents close to the Spanish speaking community, since it is delivered in its mother tongue, an facilitate its access to the aims, proposals and dealings carried out by the Olympic institution to contribute to the cause of peace.Key words: The International Olympic Committee, Thomas Bach, Sport, Peace, United Nations.