Statistical Properties and Economic Implications of Jump-Diffusion Processes with Shot-Noise Effects

This paper analyzes the Shot-Noise Jump-Diffusion model of Altmann, Schmidt and Stute (2008), which introduces a new situation where the effects of the arrival of rare, shocking information to the financial markets may fade away in the long run. We analyze several economic implications of the model, providing an analytical expression for the process distribution. We also prove that certain specifications of this model can provide negative serial persistence. Additionally, we find that the degree of serial autocorrelation is related to the arrival and magnitude of abnormal information. Finally, a GMM framework is proposed to estimate the model parameters.Filtered Poisson Process, Characteristic Function, Generalized Method of Moments

VALLE PAVÓN, Guillermina del. Finanzas piadosas y redes de negocios. Los mercaderes de la ciudad de México ante la crisis de Nueva España, 1804-1808. México: Instituto Mora, 2012.

(trecho de parágrafo do texto)Del Valle logra en la introducción y el primer capítulo exponer con claridad cómo estaban interconectadas las empresas rurales, mineras y comerciales con el circuito del crédito eclesiástico de las corporaciones religiosas, y éstas a su vez, con el poderoso Consulado de México. De estas páginas se infiere el asombroso conocimiento bibliográfico de la autora, así como el exacto cuidado que otorga al tratamiento de las fuentes primarias, no siempre fáciles teniendo en cuenta la enorme variedad de las mismas que se disponen tanto en México como en España.  Del Valle logra en la introducción y el primer capítulo exponer con claridad cómo estaban interconectadas las empresas rurales, mineras y comerciales con el circuito del crédito eclesiástico de las corporaciones religiosas, y éstas a su vez, con el poderoso Consulado de México. De estas páginas se infiere el asombroso conocimiento bibliográfico de la autora, así como el exacto cuidado que otorga al tratamiento de las fuentes primarias, no siempre fáciles teniendo en cuenta la enorme variedad de las mismas que se disponen tanto en México como en España.

Developing a medicines management intervention in older patients with dysphagia

Background Administering medication to patients with dysphagia (PWD) is a challenging process for patients and healthcare professionals (HCPs). This study aimed to improve those administrations by focusing on the development of the elements of a pharmacy service providing individualised guidance on the administration of medication to older PWD in care homes. The objectives were to:- assess the feasibility of a pharmacy service promoting guidance on the administration of medication to PWD, - identify and develop theory on the elements that affect the administration of medication to PWD in care homes, - identify outcomes for the modelling process previous to a large scale intervention. Methods A questionnaire was designed to evaluate the acceptability by HCPs of a pharmacy service for PWD in hospital wards. Qualitative interviewing was used in care homes to explore the perceptions of nurses on the administration of medication to PWD and nurse’s acceptability of a pharmacy service providing individualised medication administration guides (I-MAGs). Observational drug rounds were carried out in care homes to describe the quality, type and frequency of errors in the administration of medication to PWD. Results I-MAGs were well received on the hospital wards and nurses felt more confident and time efficient in their practice when the I-MAGs were present on the ward. Interviews identified the isolating environment of the care home, the importance of formulation choice, the lack of awareness of dysphagia and gaps in nurse’s pharmaceutical knowledge as barriers in the medicines management of PWD. Observational drug rounds revealed that medicine administration errors (MAEs) in care homes (excluding time errors) are three times more frequent in PWD than in those without. Conclusion Medicines management for PWD requires a multidisciplinary approach from several HCPs and consequently PWD could benefit from interventions that overcome the practice barriers between those HCPs

Hearing regeneration and regenerative medicine: present and future approaches

More than 5% of the world population lives with a hearing impairment. The main factors responsible for hearing degeneration are ototoxic drugs, aging, continued exposure to excessive noise and infections. The pool of adult stem cells in the inner ear drops dramatically after birth, and therefore an endogenous cellular source for regeneration is absent. Hearing loss can emerge after the degeneration of different cochlear components, so there are multiple targets to be reached, such as hair cells (HCs), spiral ganglion neurons (SGNs), supporting cells (SCs) and ribbon synapses. Important discoveries in the hearing regeneration field have been reported regarding stem cell transplantation, migration and survival; genetic systems for cell fate monitoring; and stem cell differentiation to HCs, SGNs and SCs using adult stem cells, embryonic stem cells and induced pluripotent stem cells. Moreover, some molecular mediators that affect the establishment of functional synapses have been identified. In this review, we will focus on reporting the state of the art in the regenerative medicine field for hearing recovery. Stem cell research has enabled remarkable advances in regeneration, particularly in neuronal cells and synapses. Despite the progress achieved, there are certain issues that need a deeper development to improve the results already obtained, or to develop new approaches aiming for the clinical application.Ministry of Economy and Competitiveness (Project CTQ2014-56611-R)Regional Government of Andalusia (Project P11-CTS-7651)Ramón Areces Foundation (Madrid, Spain

The Effect of the Spanish Nuclear Phase-out on the Electricity Market

Portugal and Spain are integrated into what is known as the Iberian Electricity Market. Spain participates in this market with significant contribution of energy produced by nuclear plants. In 2022, nuclear energy accounted for 22 % of the total energy generated in Spain. Nuclear power plants sell their energy largely through bilateral contracts, and approximately 20 % is offered in the day-ahead electricity market. By 2035, Spain will phase-out nuclear power producing a structural change of its generation mix. In this paper, we investigate the effect on the day-ahead Iberian electricity market that the gradual removal of nuclear power plants will have on the daily electricity market. The methodology is based on a ceteris paribus approach, where generation conditions are modified by removing nuclear plants and keeping the rest of the variables constant (demand and other generation). Under these conditions, the market is reproduced, estimating how electricity prices change in the day-ahead electricity market. To evaluate the market electricity prices under this new scenario with a total or a partial elimination of nuclear energy generation, it is necessary to use a market model. The existing literature shows various approaches to replicate the electricity market, among which are agent-base modelling, optimization algorithms, artificial intelligence techniques or metaheuristic merit-order methods. Our approach is based on the latter methods, by using actual generation and demand data, the new market generation and demand curves are reconstructed and the new clearing price is obtained. For the most conservative scenario, the results show a price increase of more than 5 % for the first 6 months of 2021. The reason for this increase is that nuclear generation participates in the market by offering its energy at prices close to zero. When this generation is withdrawn, there is a shift to the left of the hourly generation curve producing a new market equilibrium at a point of higher price and lower energy

Study of the impact federated erubrics on assessing competences in the practicum

Presentation Research of the Practicum and externships has a long history and involves important aspects for analysis. For example, the recent changes taking place in university grades allot more credits to the Practicum course in all grades, and the Company-University collaboration has exposed the need to study in new learning environments. The rise of ICT practices like ePortfolios, which require technological solutions and methods supported by experimentation, study and research, require particular examination due to the dynamic momentum of technological innovation. Tutoring the Practicum and externships requires remote monitoring and communication using ePortfolios, and competence-based assessment and students’ requirement to provide evidence of learning require the best tutoring methods available with ePortfolios. Among the elements of ePortfolios, eRubrics emerge as a tool for design, communication and competence-assessment. This project aims to consolidate a research line on eRubrics, already undertaken by another project -I+D+i [EDU2010-15432]- in order to expand the network of researchers and Centres of Excellence in Spain and other countries: Harvard University in USA, University of Cologne in Germany, University of Colima in Mexico, Federal University of Parana, University of Santa Catarina in Brasil, and Stockholm University in Sweden(1). This new project [EDU2013-41974-P](2) examines the impact of eRubrics on tutoring and on assessing the Practicum course and externships. Through technology, distance tutoring grants an extra dimension to human communication. New forms of teaching with technological mediation are on the rise and are highly valuable, not only for formal education but especially in both public and private sectors of non-formal education, such as occupational training, unemployed education and public servant training. Objectives Obj. 1. To analyse models of technology used in assessing learning in the Practicum of all grades at Spanish Faculties of Education. Obj. 2. To study models of learning assessment measured by eRubrics in the Practicum. Obj. 3. To analyse communication through eRubrics between students and their tutors at university and practice centres, focusing on students’ understanding of competences and evidences to be assessed in the Practicum. Obj. 4. To design assessment services and products, in order to federate companies and practice centres with training institutions. Among many other features, it has the following functions CoRubric(3) 1. The possibility to assess people, products or services by using rubrics. 2. Ipsative assessment. 3. Designing fully flexible rubrics. 4. Drafting reports and exporting results from eRubrics in a project. 5. Students and teachers talk about the evaluation and application of the criteria Methodology, Methods, Research Instruments or Sources Used The project will use techniques to collect and analyse data from two methodological approaches: 1. In order to meet the first objective, we suggest an initial exploratory descriptive study (Buendía Eisman, Colás Bravo & Hernández Pina, 1998), which involves conducting interviews with Practicum coordinators from all educational grades across Spain, as well as analysing the contents of the teaching guides used in all educational grades across Spain. 55 academic managers were interviewed from about 10 faculties of education in public universities in Spain (20%), and course guides 376 universities from 36 public institutions in Spain (72%) are analyzed. 2. In order to satisfy the second objective, 7 universities have been selected to implement the project two instruments aimed at tutors practice centers and tutors of the faculty. All instruments for collecting data were validated by experts using the Delphi method. The selection of experts had three aspects: years of professional experience, number and quality of publications in the field (Practicum, Educational Technology and Teacher Training), and self-rating of their knowledge. The resulting data was calculated using the Coefficient of Competence (Kcomp) (Martínez, Zúñiga, Sala & Meléndez, 2012). Results in all cases showed an average experience of more than 0.09 points. The two instruments of the first objective were validated during the first half of 2014-15 year, data collected during the second half. And the second objective during the first half of 2015-16 year and data collection for the second half. The set of four instruments (two for each objective 1 and 2) have the same dimensions as each of the sources (Coordinators, course guides, tutors of practice centers and faculty) as they were: a. Institution-Organization, b. Nature of internships, c. Relationship between agents, d. Management Practicum, e. Assessment. F. Technological support, g. Training and h. Assessment Ethics. Conclusions, Expected Outcomes or Findings The first results respond to Objective 1, where we find different conclusions depending on each of the six dimensions. In the case of internal regulations governing the organization and structure of the practicum, we note that most traditional degrees (Elementary and Primary grades) share common internal rules, in particular development methodology and criteria against other grades (Pedagogy and Social Education ). It is also true that the centers of practices in last cases are very different from each other and can be a public institution, a school, a company, a museum, etc. The memory with a 56.34% and 43.67% daily activities are more demands on students in all degrees, Lesson plans 28.18% 19.72% Portfolio 26.7% Didactic units and Others 32,4%. The technical support has been mainly used the platform of the University 47.89% and 57.75% Email, followed by other services and tools 9.86% and rubric platforms 1.41%. The assessment criteria are divided between formal aspects of 12.38%, Written expresión 12.38%, treatment of the subject 14.45%, methodological rigor of work 10.32%, and Level of argument Clarity and relevance of conclusions 10.32%. In general terms, we could say that there is a trend and debate between formative assessment against a accreditation. It has not yet had sufficient time to further study and confront other dimensions and sources of information. We hope to provide more analysis and conclusions in the conference date.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. Spanish Plan of R+D+i Excellence (2014-2016) No. EDU2013-41974P

Recommender system to identify students with learning deficiencies in assessments

[EN] Find areas and indicators of achievement where students need to reinforce their knowledge is a difficult task for teachers in schools. This article presents a decision-making support system that allows teachers to identify students with poor academic performance. The strategy is a Matrix Based Recommender System to rate assessments and share the results using statistical graphs. To validate this proposal we used focus group and daily meetings methodologies. The proposed strategy was tested in UGEL07-Lima-Perú with 135 schools and 25491 students in evaluation process. The evaluation results show that teachers agree with the proposed strategy, because it allows them to have assessment information everywhere and at every time. The results also highlight that using the tool users can have visual information in real time. Furthermore, the information shared through the application improves decision-making on corrective actions for poor academic performance in evaluated areas

To den or not to den. Contributions to the taphonomic history of the Early Pleistocene site of Venta Micena 4 (Orce, Guadix-Baza Basin)

Venta Micena (Orce, Guadix-Baza Basin, Spain) is an Early Pleistocene locality renowned for the richness and quality of its palaeontological record. VM is spread over an area of 2.5 km2, where several exposed fossil outcrops are visible amidst its gorges and ravines. The best known of these sites, VM3, has been interpreted as a hyaena den. In addition, a new site, named VM4, has recently been the focus of fieldwork and taphonomic studies. The publication by Luz on et al. (2021) pointed out that VM4 presents a more complex history than VM3. First, two different sub-levels were identified: VM4-I and VM4-II. Secondly, the preliminary taphonomic analysis showed conspicuous differences with regard to VM3. Nevertheless, such interpretation has been challenged by Palmqvist et al. (2022) who proposed that VM3 and VM4 are both the result of a single depositional process, entailing the selective transport of skeletal parts by the giant extinct hyaena Pachycrocuta brevirostris back to its den. Using well-preserved faunal elements whose depositional context and provenance are reliable, in this paper we show that: 1) there are two clearly defined sub-levels in VM4 with some shared taphonomic characteristics as well as some notable differences; 2) VM3 and VM4 exhibit enough divergence to support differences in site formation processes; 3) The interpretation of both VM4-I and VM4-II is more consistent with their characterisation as open-air sites in which multiple agents and depositional processes contributed to its formation, rather than with hyaena dens. Nevertheless, excavations are still in progress at VM4 and therefore any results and interpretations ought to be considered as provisional.Consejeía de Cultura de la Junta de Andalucia through the General Research Project Primeras ocupaciones humanas y contexto paleoecologico a partir de los depositos Plio-pleistocenos de la cuenca Guadix-Baza BC.03.032/17Inside the Artefacts & Ecofacts" Excellence Unit (University of Granada) HUM-607 PID 2021.125098NB.I00 MCIN/AEI/10.13039/501100011033/FEDERUna manera de hacer Europa ProyExcel_00274 2021 SGR 01238Agencia de Gestio D'Ajuts Universitaris de Recerca Agaur (AGAUR) Generalitat de CatalunyaNational Health and Medical Research Council (NHMRC) of Australia PRE2020-094482 CEX2019-000945-M-20-1Spanish GovernmentArchaeometrical Studies. Inside the Artefacts & Ecofacts" Excellence Unit (University of Granad

ANALISIS KEBIJAKAN PENGEMBANGAN PASAR BULU KOTA SEMARANG BERDASARKAN PERATURAN DAERAH NOMOR 9 TAHUN 2013 TENTANG PENGATURAN PASAR TRADISIONAL

The existence of traditional markets declined with the rapid development of modern markets. The presence of professionally managed modern markets is claimed to have discredited the existence of traditional markets. The development of market revitalization that has been proclaimed by the government is an effort to maintain the existence of traditional market itself, this effort to increase market competitiveness to modern market. This study aims to identify the problem of market development policy of Feathers based on Local Regulation No. 9 of 2013 on Traditional Market Setup and formulate alternative of market development of Feathers based on Noomor 9 Year 2013 Regulation on Traditional Market Setting. The research method used in this research is descriptive qualitative method. The theory used is the theory of brigman and Davis which mentions there are five stages of policy analysis are among others (1) Formulate policy formulation; (2) Determining Policy Objectives (3) Identifying Policy Parameters; (4) finding policy alternatives; (5) Decide on alternative policy. The parameters in this policy analysis use parameters from Patton and Sawicky which state there are four criteria in assessing policy alternatives: technical feasibility, economic and financial possibilities, political feasibility and administrative feasibility. The results of the research indicate that the policy alternatives found in the implementation of the Bulu market development policy are (1) to improve the market management of Feathers covering the availability and maintenance of market facilities, the arrangement of market zoning, the availability of market security and the empowerment of market traders; (2) Increasing compliance of market traders Furs (3) increasing acceptance of market levies Feathers (4) enhancing market competitiveness Feathers. The chosen alternative is to improve the market management of Feathers by stating that the research findings of the researcher is an elite model in the policy-making model

Resistencia a la compresión axial del concreto f’c=210 kG/CM2 diseñado con material árido artificial (escoria siderúrgica) reemplazando el agregado fino en porcentajes de 10%, 15% y 20%

Se ha realizado una investigación explicativa / experimental, sobre el uso de la escoria siderúrgica reemplazando el agregado fino en el concreto en Cajamarca. La presente tesis tiene como finalidad comparar la resistencia entre un concreto diseñado con escoria siderúrgica vs un concreto sin escoria siderúrgica (convencional). El enfoque de la investigación es cuantitativa, debido a que se realizaron 48 probetas de concreto, de las cuales se utilizaran 36 probetas; 9 probetas con 10% de escoria, 9 con 15% de escoria, 9 con 20% de escoria y otras 9 que serán las probetas patrón (sin escoria), las cuales fueron ensayadas a 7 días, 14 días y 28 días de curado, teniendo como resultado que el concreto diseñado con 15% y 20% de escoria siderúrgica son los más resistentes a los 28 días, y también sobrepasando la resistencia del diseño, llegando el de 15% a 238.00 Kg/cm2 y el de 20% a 232.39 Kg/cm2. Finalmente se concluye que la sustitución del agregado fino por escoria siderúrgica, mejora la resistencia a la compresión del concreto, y asimismo poder disminuir la explotación de nuestras canteras y reducir el presupuesto de una obra de construcción