Asymptotic Analysis of the Eigenvalues of a Laplacian Problem in a Thin Multidomain

We consider a thin multidomain of $R^N$, N>1, consisting of two vertical cylinders, one placed upon the other: the first one with given height and small cross section, the second one with small thickness and given cross section. In this multidomain we study the asymptotic behavior, when the volumes of the two cylinders vanish, of a Laplacian eigenvalue problem and of a $L^2$-Hilbert orthonormal basis of eigenvectors. We derive the limit eigenvalue problem (which is well posed in the union of the limit domains, with respective dimension 1 and N-1) and the limit basis. We discuss the limit models and we precise how these limits depend on the dimension N and on limit of the ratio between the volumes of the two cylinders

Non-local effects by homogenization or 3D-1D dimension reduction in elastic materials reinforced by stiff fibers

We first consider an elastic thin heterogeneous cylinder of radius of order epsilon: the interior of the cylinder is occupied by a stiff material (fiber) that is surrounded by a soft material (matrix). By assuming that the elasticity tensor of the fiber does not scale with epsilon and that of the matrix scales with epsilon square, we prove that the one dimensional model is a nonlocal system. We then consider a reference configuration domain filled out by periodically distributed rods similar to those described above. We prove that the homogenized model is a second order nonlocal problem. In particular, we show that the homogenization problem is directly connected to the 3D-1D dimensional reduction problem

Rancang Bangun Alat Pemberian Pakan Ikan Koki Otomatis Pada Aquarium Berbasis Mikrokontroler AT89S52

ABSTRAKFaktor yang penting dalam pemelihara ikan pada aquarium adalah ketepatan waktudalam pemberian makan ikan. Kebanyakan dari mereka yang mempunyai hobi memelihara ikankhawatir pemberian makan yang harus dilakukan tiap hari.Berdasarkan hal tersebut pada proyek akhir ini dirancang dan dibuat alat pemberianpakan ikan otomatis berbasis mikrokontroler AT89S52. Maka dirancanglah alat yangmempermudah memberi makan ikan yaitu secara otomatis sesuai dengan jadwal yang telahditentukan. Adapun komponen pendukung penjadwalan pakan ikan diantaranya pembuatanrangkaian minimum sistem AT89S52 sebagai otak dari alat ini yang nantinya akan diisikanprogram dengan menggunakan bahasa assembler, RTC (Real Time Clock) sebagai pengaturwaktu, motor DC untuk memutar pembuka katup valve tempat pakan ikan.ABSTRACTFactors that are important in the aquarium fish-keeping is timeliness in fish feeding.Most of those who have a hobby of keeping fish feeding worried that must be done every day.Based on that at the end of the project is it designed and made automatic fish feeding apparatusbased on microcontroller AT89S52.Then designed a tool that makes it is to feed the fish automatically according to apredetermined schedule. The supporting components including the manufacture of fish feedscheduling minimum circuit AT89S52 as the brain of the system is a tool that will be loadedusing assembler language programs, RTC (Real Time Clock) as a self-timer, a DC motor torotate the valve opening valve where fish feed

Junction of elastic plates and beams (Preliminary version)

We consider the linearized elasticity system in a multidomain of the three dimensional space. This multidomain is the union of a horizontal plate, with fixed cross section and small thickness "h", and of a vertical beam with fixed height and small cross section of radius "r". The lateral boundary of the plate and the top of the beam are assumed to be clamped. When "h" and "r" tend to zero simultaneously, with "r" much greater than the square of "h", we identify the limit problem. This limit problem involves six junction conditions.Comment: Ceci est la redaction du 3 Mars 2003. Francois Murat souhaite y faire des modification

How can India help women to stay in the workforce?

Women in India are far less likely to be in paid work than men. The economic hardship caused by the pandemic has driven some into the workforce, but if they are to keep their jobs social norms will have to change. Laura Sili (International Growth Centre) looks at the challenges for India’s policymakers

International cooperation in agricultural and rural issues: recent experience in Argentina

La cooperación internacional en materia agrícola y rural ha tenido un rol importante en Argentina, en tanto que el aprendizaje realizado permite orientar mejor el impacto de nuevos proyectos de cooperación. Interesa resaltar tres elementos: a) la cooperación en materia agrícola y rural es muy específica pues los agentes deben mantener un enfoque integral de las problemáticas del país, apelando a soluciones innovadoras adaptadas a contextos locales, b) los proyectos de cooperación son espacios de aprendizaje compartidos entre múltiples actores, c) la cooperación entre países de América Latina es una fuente privilegiada de información para mejorar las prácticas de cooperación. Estos elementos tienen lugar en un contexto de cambio de las lógicas de cooperación donde se observa el pasaje de un modelo de cooperación centrado en suplir las fallas de mercado, al fortalecimiento de los agentes para enfrentar las condiciones de funcionamiento de mercados e instituciones existentesThe international cooperation in agricultural and rural subjects had an important role in Argentina, as the experiences in these topics helped to improve the impacts of the new cooperation projets in the region. In this regard, we have to highlight three key issues: a) the cooperation in agricultural and rural topics is extremely specific, as the agents have to provide to an integral approach of the problems affecting the country, appealing to innovative solutions, adapted to local contexts; b) the cooperation projects are learning spaces shared by many actors; c) cooperation between Latinamerican countries is a prime source of information to improve cooperation experiences. All these questions have place in a context of a changing cooperation logic, going from a cooperation model tending to make up for the market failures, to a model aimed to strengthen the agents to deal with the operating conditions of the current markets and institutions.Fil: Sili, Marcelo Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; Argentin

Estilos e lógicas de ação territorial: A experiência recente dos municípios do Paraguai

Territorial action is a complex process of development in which public, private, and collective actions intervene. As the Latin American experience shows, municipalities are increasingly important actors in building local development. They act in different ways, and this work highlights these differences in style and form of intervention. The study identifies four types or styles of action that synthesize two main elements. First, the forms of organization for obtaining resources. Second, the types of actions prioritized to build development processes and reduce problems of structural poverty.La acción territorial es un complejo proceso de construcción del desarrollo en el cual intervienen la acción pública, la privada y la colectiva. Como lo demuestra la experiencia latinoamericana, los municipios son actores de creciente importancia en la dinámica de construcción del desarrollo local. Sin embargo las formas de actuación de los municipios no son iguales. Al contrario, este trabajo muestra profundas diferencias de estilos y formas de intervención entre todos ellos. Pudimos identificar cuatro tipos o estilos de acción que sintetizan dos grandes elementos. En primer lugar, las formas de organización para la obtención de recursos y, en segundo, los tipos de acciones priorizadas para construir procesos de desarrollo y para reducir problemas de pobreza estructural.A ação territorial é um processo complexo de construção de desenvolvimento em que intervêm a ação pública, a ação privada e a ação coletiva. Como mostra a experiência latino-americana, os municípios são atores de crescente importância na dinâmica de construção do desenvolvimento local. No entanto, as formas de ação dos municípios não são as mesmas. Pelo contrário, este trabalho mostra diferenças profundas em estilos e formas de intervenção entre todos eles. Fomos capazes de identificar quatro tipos ou estilos de ação, que sintetizam dois grandes elementos. Em primeiro lugar, as formas de organização para obter recursos e, segundo, os tipos de ações priorizadas para construir processos de desenvolvimento e reduzir os problemas de pobreza estrutural.Fil: Sili, Marcelo Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Geografía y Turismo; Argentin

Comparison of Jesus' healing with healing in traditional and Christian Samoa

The thesis com pares the healing miracles of Jesus with the healing practices of traditional and Christian Samoa. Jesus' healings can be appreciated more within a healing environment like that of the gospels. The Samoan healing perspectives present an interesting and challenging framework in which one may recapture the significance the healing miracles served for the evangelists and also for those whom Jesus healed. Jesus' healing emphasized the holistic cure of the sick person rather than simply the physical remedy of the body. The comparison of Samoan and Jesus' healing motifs helps re-enforce the reality of holistic healing, which includes not only physical cure but other significant healing dimensions as wellChapter one deals with Samoa, highlighting the traditional and Christian world-views within which healing may be understood. Peoples' concept of health and sickness is associated with their view of the world. The social and religious realities influence people's concepts of causality and remedy of illness. Within the framework of these world-views, Samoan healing is understood.Chapter two is a comparison of the world-view of first century Judaism with the Samoan, in relation to evil spirits and demons and the Samoan spirits and deities. Even though both spirit-worlds were influential in the causality of illness and possessions, the nature of the spirits is not always the same. The Jewish view of spirits is dualistic whereas the traditional Samoan spirit-world tends to be complementary. Despite these differences, there is a common ground by which one may understand both systems.Chapter three com pares exorcism s in the gospels with aitu [spirit] possessions in Samoa. Both reveal similarities not only in the nature of the phenomenon, but also its significance. The difference in the nature of the spirits presents a significant contrast. Many of the Samoan spirits w ere seen as respected family and ancestral spirits and therefore aitu possession indicates different functions from those of the gospels. The impact of Christianity upon traditional culture however, relegates traditional spirits to the realm of evil spirits and demons.Chapter four presents a comparison of the sin-sickness motif implicit in Jesus' healing, with sickness caused by the breaking of traditional and religious taboos in Samoa. The relationship of morality to sickness implied in some of Jesus' healing miracles was characteristic of the wider framework within which health was understood in the first century A D. Such perspective on illness is also true of the Samoan understanding of the causality and remedy of illness. Religious and social obligations to the supernatural world, to the family and com m unity and also to God, are integral aspects of maintaining health and well-being in Samoa.Chapter five com pares the holistic nature of Jesus' healing with the concept of health, healing and wholeness in Samoa. Jesus approached healing holistically rather than simply the remedy of the physical symptoms. His healing miracles should not be equated with medical healing, but may be seen as an attempt to understand sickness within the whole context of the human person, who has social, religious and spiritual relationships, in the family, the community and to God. Samoan healing perspectives highlight social, religious and moral dimensions of healing. When the remedy is set within the patient's social, religious and moral framework, holistic healing and genuine well-being may be successfully achieved

L'Argentine : expansion agricole et dévitalisation rurale

Urbaine, agricole, pays des vides et des pleins : paradoxale, l'Argentine l'est ! Deux cents ans après l'Indépendance, en ces temps de décentralisation (1996) et de réflexion sur une hypothétique politique nationale d'aménagement du territoire du pays (Plan Argentina 2016), elle affiche ces (et ses) paradoxes urbano-agricoles au sein de territoires ruraux qui, au-delà du cas emblématique de la Pampa, constituent une mosaïque de situations régionales et dont l'évolution est au centre de ce chapitre, tout comme celles des relations villes-campagnes

Rancang Bangun Alat Pemberian Pakan Ikan Koki Otomatis pada Aquarium Berbasis Mikrokontroler AT89S52

Factors that are important in the aquarium fish-keeping is timeliness in fish feeding.Most of those who have a hobby of keeping fish feeding worried that must be done every day.Based on that at the end of the project is it designed and made automatic fish feeding apparatusbased on microcontroller AT89S52.Then designed a tool that makes it is to feed the fish automatically according to apredetermined schedule. The supporting components including the manufacture of fish feedscheduling minimum circuit AT89S52 as the brain of the system is a tool that will be loadedusing assembler language programs, RTC (Real Time Clock) as a self-timer, a DC motor torotate the valve opening valve where fish feed