Symmetry reduction, integrability and reconstruction in k-symplectic field theory

We investigate the reduction process of a k-symplectic field theory whose Lagrangian is invariant under a symmetry group. We give explicit coordinate expressions of the resulting reduced partial differential equations, the so-called Lagrange-Poincare field equations. We discuss two issues about reconstructing a solution from a given solution of the reduced equations. The first one is an interpretation of the integrability conditions, in terms of the curvatures of some connections. The second includes the introduction of the concept of a k-connection to provide a reconstruction method. We show that an invariant Lagrangian, under suitable regularity conditions, defines a `mechanical' k-connection.Comment: 37 page

Symmetries, Newtonoids vector fields and conservation laws in the Lagrangian kk-symplectic formalism

In this paper we study symmetries, Newtonoid vector fields, conservation laws, Noether's Theorem and its converse, in the framework of the $k$-symplectic formalism, using the Fr\"olicher-Nijenhuis formalism on the space of $k^1$-velocities of the configuration manifold. For the case $k=1$, it is well known that Cartan symmetries induce and are induced by constants of motions, and these results are known as Noether's Theorem and its converse. For the case $k>1$, we provide a new proof for Noether's Theorem, which shows that, in the $k$-symplectic formalism, each Cartan symmetry induces a conservation law. We prove that, under some assumptions, the converse of Noether's Theorem is also true and we provide examples when this is not the case. We also study the relations between dynamical symmetries, Newtonoid vector fields, Cartan symmetries and conservation laws, showing when one of them will imply the others. We use several examples of partial differential equations to illustrate when these concepts are related and when they are not

Farmers' Knowledge of Cassava Streak Virus Disease in Selected Districts of Central Uganda

Cassava brown streak disease is one of the latest outbreaks of diseases threatening cassava production in Uganda. Although, previously reported in some parts of east African coast, CBSD was not a common problem in Uganda until over a decade ago. Since, its first reported outbreak in mid 2000s, CBSD has continued to spread in many cassava growing districts of Uganda. Cassava brown streak disease manifests as a syndrome characterised by leaf chlorosis, stem and root necrosis. The infected root tubers are unfit for human consumption. Therefore, the study was conducted to assess farmers' knowledge of CBSD in the selected districts in central Uganda. Semi-structure questionnaires were used to gather information from 180 respondents from the districts of Mukono, Masaka and Wakiso on the knowledge and perception of CBSD. The findings revealed that cassava was widely grown in the three districts. However, a number of constraints including pests and diseases were reported to be affecting cassava growing. Of the diseases, CBSD was ranked as the most widespread and devastating. In fact, 75% of the respondents had good knowledge of CBSD and perceive it as responsible for the declining cassava production in the districts. The most common symptoms associated with CBSD leaf chlorosis, rotting and necrosis of the root tubers. Both the old and newly introduced cassava varieties were susceptible to CBSD. Accordingly, CBSD was thought of as responsible for food insecurity, livelihoods and the loss of cassava biodiversity among others

Book review: popular democracy: the paradox of participation by Gianpaolo Baiocchi and Ernesto Ganuza

In Popular Democracy: The Paradox of Participation, Gianpaolo Baiocchi and Ernesto Ganuza examine contemporary forms of participatory governance by tracing the origins and development of participatory budgeting (PB) from its roots in Porto Alegre, Brazil, to its adoption in two cases, Cordoba, Spain and Chicago, USA. While acknowledging that PB has been seen as being too easily co-opted by neoliberalism, the book's ..

Pengaruh Kompetensi Agen terhadap Kepercayaan Konsumen pada Perusahaan Asuransi Gabungan Tabungan dan Resiko di Sulawesi Tenggara

The purpose of this research is to find out and analyze an effect of agentcompetence on customer trust. The sample includes customers of AJB Bumiputera1912 and PT. Asuransi Jiwasraya (Perseo) in Sulawesi Tenggara, located inKendari City, Bau-Bau City, Kolaka District, Konawe Selatan District and MunaDistrict. The sample is drawn using purposive random sampling method. Theanalytical technique used to test hypothesis is Structural Equation Modeling (SEM)using AMOS 4.0 (Analysis Moment Of Structural). In addition the hipothesis aretested using statistical tests of alpha 0,05 and t Table 1,96 to determine significanteffect of latent variable.The results suggest that first hypothesis is assepted since the agent competencesignificantly and positively influences customer trust to agent. The secondhypothesis is reject because the agent competence does\u27t significantly effect thecustomer trust to company. Third hypothesis is accepted because the customertrust to agent is significantly and positively associaed with the customer trust tocompany. The most dominant direct relationship resulting from the second indirectrelationship are : Agen competence Customer trust to agent Customer trustto company. Contribution of the study is relastionship models developed in theresearch represent a synthess of the four theories and the results of previous studien.Keywords : Agent competence, customer trust of agent, and customer trust to company

Iucundus nominis error (Ov. Ars 3, 729). Procri rustica puella nell’Ars amatoria

Alla fine del terzo libro dell’Ars, Ovidio esorta le cultae lettrici a non dare spazio al sentimento della gelosia, estraneo all’adulterino mondo dell’elegia erotica, e introduce il mito dell’amore infelice di Cefalo e Procri (3, 683-746), exemplum ‘serio’ (non leve) delle nefaste conseguenze di un atteggiamento non moderato in amore. Il presente contributo focalizza l’attenzione sulla figura di Procri come anti-exemplum, modello oppositivo della elegiaca femina culta, e legge la ‘credulità’ della fanciulla, vittima dell’inganno prodotto dal nome della presunta rivale (aura), alla luce della rusticitas che delinea le similari figure di puellae abbandonate delle Heroides. Nella cornice didascalica ovidiana il mito funziona come modello culturale contrario all’estetica del decorum. La ricerca della moderazione e l’invito al rispetto del modus costituiscono il fulcro del messaggio dell’Ars. Connotato come ‘dramma dell’inganno dell’eros’, il mito di Procri si presta a divenire exemplum negativo di insania amorosa, modello perduto di simplicitas che viola i paradigmi dell’amore elegiaco e mal s’addice all’aetas ovidiana del cultus e della raffinatezza

Dialkylcarbamoyl chloride (DACC)-coated dressings in the management and prevention of wound infection: A systematic review

Objective: Dialkylcarbomoyl chloride (DACC)-coated dressings (Leukomed Sorbact and Cutimed Sorbact) irreversibly bind bacteria at the wound surface that are then removed when the dressing is changed. They are a recent addition to the wound care professional's armamentarium and have been used in a variety of acute and chronic wounds. This systematic review aims to assess the evidence supporting the use of DACC-coated dressings in the clinical environment. Method: We included all reports of the clinical use of DACC-coated dressings in relation to wound infection. Medline, Embase, CENTRAL and CINAHL databases were searched to September 2016 for studies evaluating the role of DACC-coated dressings in preventing or managing wound infections. Results: We identified 17 studies with a total of 3408 patients which were included in this review. The DACC-coating was suggested to reduce postoperative surgical site infection rates and result in chronic wounds that subjectively looked cleaner and had less bacterial load on microbiological assessments. Conclusion: Existing evidence for DACC-coated dressings in managing chronic wounds or as a surgical site infection (SSI) prophylaxis is limited but encouraging with evidence in support of DACC-coated dressings preventing and treating infection without adverse effects

Il rapporto tra ospedale e territorio nell’attuazione della continuità assistenziale. Il caso del fine vita

La continuità assistenziale è un principio fondamentale nelle cure primarie. Essa risponde all’obiettivo di creare una integrazione e una collaborazione tra le varie strutture e servizi di assistenza sanitaria. A livello organizzativo rappresenta l’erogazione di servizi inseriti all’interno di un piano gestionale condiviso che dovrebbe sostanziarsi nella capacità di avviare e mantenere attivo un modello di lavoro in rete. Implementare un lavoro di rete tra ospedale e territorio implica un cambiamento culturale radicale che sembra essere perseguito con molta difficoltà nella realtà italiana. La difficoltà di questa sfida è più evidente nella gestione del fine vita, specialmente per il personale medico. A questo proposito il nostro studio si pone le seguenti domande di ricerca: Come i medici si rappresentano la continuità tra ospedale e strutture del territorio deputate alla gestione di pazienti terminali? quali sono le connotazioni culturali prevalenti della struttura ospedaliera e dell’hospice? Come viene trattata la questione del fine vita? L’obiettivo principale della ricerca è stato quello di esplorare i modelli culturali che organizzano le rappresentazioni che i medici hanno della continuità della cura nel fine vita. A questo proposito sono stati intervistati, attraverso un’intervista semi-strutturata, 10 medici (4 appartenenti all’UOC di Oncologia medica dell’ospedale, 4 appartenenti all’UOC di Medicina d’urgenza dell’ospedale e 2 appartenenti all’hospice), operanti nel territorio di un capoluogo di provincia umbro. I testi delle interviste sono stati interamente trascritti e analizzati attraverso l'Analisi Fenomenologica Interpretativa (IPA). Complessivamente i dati emersi evidenziano una offerta dei servizi al paziente terminale non inserita in una rete condivisa, una cultura della continuità assistenziale ancora debole ma fortemente differente nei due contesti di riferimento. Il processo di handover appare una pratica sostanzialmente formale e adempitiva, non basata su una comunicazione efficace e costruita sulle esigenze di paziente e familiare, quanto piuttosto agita in tempi strettissimi e quando il fine vita è imminente. Viene, infine, discussa la funzione della professione di psicologo, evidenziando la necessità di una sua collocazione all'interno del team di assistenza, non solo con compiti di assistenza agli utenti, ma anche di facilitazione dei processi di lavoro e di costruzione dell’handoverContinuity of care is a fundamental principle in primary care. It responds to the integration and collaboration principle between different health-care services. At the organizational level, continuity of care is the provision of services included in a management plan that uses a shared model of network work. Implementing the network between hospital and territory implies a radical cultural change, which shows many difficulties to be achieved in Italian reality. The complexity of this challenge is most evident in the management of end of life, especially for physicians. In this regard, in our study we posed the following research questions: As physicians represent the continuity between hospital and territory in the management of terminal patients? What are the cultural characteristics of the Hospital and Hospice? How it is treated the issue of the end of life? So, main objective of the research was to investigate the cultural models that organize the representations of physicians regarding continuity of care in the end of life. Through semi-structured interview, were interviewed 10 physicians (4 UOC of Medical Oncology Hospital, 4 of the 'Division of Emergency Medicine Hospital and 2 of hospice), operating in Umbria territory. The texts of the interviews were fully transcribed and analyzed through the Interpretative Phenomenological Analysis (IPA). Overall, the findings highlight a offer of services to the terminal patient not included in a shared network and a culture of continuity of care still weak but strongly different in the two contexts. The handover process appears to be a formal practice, not built on the patient and family’s needs, and acted when the end of life is imminent. The function of the psychological profession is discussed, highlighting the need for its placement within the care team, not only with tasks of assistance to users but even on the facilitation of the working group processes and handover construction

Progress in cassava technology transfer in Uganda

This publication contains the full text of papers presented at a Workshop held in Masindi, Uganda, 9-12 January 1996, and sponsored by the Gatsby Charitable Foundation. During the Workshop the need became evident for additional statistics on the multiplication, distribution and uptake of improved varieties of cassava in the six districts where activities are supported by The Gatsby Charitable Foundation and also elsewhere. The results of a subsequent survey in selected sub-counties of each of the six Gatsby districts are also presented here, together with estimates of the amount of improved material that has been distributed and the area now grown. These latest figures (Appendix 1) represent the best available estimates and in some instances differ substantially from those compiled and presented in the earlier district reports