148 research outputs found
Análisis comparativo de los lenguajes de simulación discreta BPSim y SIMAN en el proceso de atención por teleconsulta de un hospital
No full textLa finalidad del presente proyecto de investigación es abordar un estudio comparativo entre los lenguajes de simulación discreta BPSim y SIMAN mediante la utilización de las herramientas Bizagi Modeler y Arena Simulation en un caso de estudio. Lo anterior, con la finalidad de determinar qué lenguaje presenta mejores capacidades para simular el proceso de negocio elegido (proceso de servicio) y optimizar la simulación en términos de tiempo de procesamiento. Los datos proporcionados contarán con el aval del Hospital Emergencias Grau Essalud. Asimismo, la metodología empleada en la presente investigación se ajusta al desarrollo de un modelo de simulación inicial en la primera etapa (AS-IS) y a dos modelos rediseñados bajo la teoría del autor Marlon Dumas (TO-BE) en la segunda y tercera etapa respectivamente. Es importante precisar que el desarrollo de los modelos en cada una de las etapas se ajusta a los cuatro niveles de simulación que propone el lenguaje BPSim y al enfoque basado en procesos relativo a SIMAN. Finalmente, si bien esta instancia del presente estudio nos mostró que las principales distinciones cualitativas se evidencian en la facilidad con la que se puede simular un proceso de negocio bajo la metodología de BPSim en relación con SIMAN, los resultados cuantitativos arrojan una diferencia significativa en la reducción de los tiempos de simulación al utilizar el lenguaje SIMAN respecto a BPSim para simular los escenarios rediseñados.The purpose of this research project is to conduct a comparative study between the discrete simulation languages BPSim and SIMAN using the Bizagi Modeler and Arena Simulation tools in a case study. This is done to determine which language presents better capabilities for simulating the chosen business process (service process) and optimizing the simulation in terms of processing time. The data provided will be backed by the Grau Essalud Emergency Hospital. Furthermore, the methodology used in this research is in line with the development of an initial simulation model in the first stage (AS-IS) and two redesigned models under the author Marlon Dumas' theory (TO-BE) in the second and third stage, respectively. It is important to note that the development of the models in each of the stages is in line with the four levels of simulation proposed by the BPSim language and the process-based approach for SIMAN. Finally, although this instance of the present study showed us that the main qualitative differences are evidenced in the ease with which a business process can be simulated using the BPSim methodology in relation to SIMAN, the quantitative results show a significant difference in the reduction of simulation times when using the SIMAN language over BPSim when simulating the redesigned scenarios
Narratological analysis of an artistic text: I. Andrić, 'The Story of Serf Siman'
No full textU radu smo utvrdili vrste sastojaka pojedinih kompozicijskih oblika u Andrićevoj Priči o kmetu Simanu, i ulogu tih sastojaka - pripovednih, opisnih i dijaloških - u 'sklapanju' umetničkog teksta. Zaključili smo da Andrić umerenom primenom naučne metodologije diskretno gradi priču o znatnim događajima u istoriji Bosne 19. veka, i da u tu pripovest vešto ugrađuje suptilno obojene umetničke detalje - na podlozi svakodnevnog izraza.The author uses the narratological standpoint to analyze 'The Story of Serf Siman' by Andrić, in doing which she ascertains the narrative, descriptive and dialogical compositional forms in the weaving of the story’s texture, and also the fact that Andrić’s narrative technique demonstrates an important feature - language economy. The author almost never uses emphatic language, but he achieves intensification in the opposite manner: by creating verbal lacunae, condensing the image or event, which immensely intensifies the reader’s expectations
Aplicação de uma metodologia de ajuste do sistema kanban em um caso real utilizando simulação computacional
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.O mercado consumidor vem exigindo cada vez mais variedades de produtos que possuam qualidade, confiabilidade e preços adequados. Isto gera umreflexo direto nas linhas de produção das indústrias. Ciclos de vida curtos, modernização, qualidade e baixo custo dos produtos e processos são algumas conseqüências que o mercado globalizado está impondo constantemente as indústrias. Estas empresas estão preocupadas em melhor ou manter sua produtividade e qualidade. Por esta razão, as filosofias de manufatura e administração têm sido estudadas, principalmente a Filosofia Just-in-Time (JIT). A filosofia Just-in-Time é formada por duas premissas básicas: a melhoria contínua, que implica que o JIT é um processo contínuo, e a eliminação das perdas, que significa minimizar todas as atividades que não agregam valor diretamente ao produto ou serviço para o cliente. Para que estas premissas sejam alcançadas é necessário utilizar uma ferramenta que permita gerenciar o fornecimento de materiais nos postos de trabalho no momento certo. Esta ferramenta é o sistema Kanban para controle da produção. Com a implementação do JIT as características do sistema produtivo são alteradas, havendo necessidade de se verificar como estas mudanças influenciarão na performance do sistema. Neste momento, a empresa deve elaborar um sistema de avaliação de desempenho industrial para o novo ambiente.Considerando os aspectos mencionados, define-se como objetivo geral deste trabalho, a aplicação de uma metodologia para ajustar os parâmetros utilizados para o dimensionamento do sistema Kanban, em concordância com os objetivos do JIT em um caso real. Também serão analisados como estes parâmetros influenciam no comportamento do sistema produtivo. A metodologia proposta fará uso da linguagem de simulação como uma ferramenta de análise
America in the World from Truman to Biden: Play it Again, Sam
No full textDoes America still count in the world? Can the world still count on America? In raising such questions halfway into a series of systemic shocks that began in September 2001, Simon Serfaty, a long-time scholar of international politics, reminds Americans that their country’s well-being and that of the world are intertwined. Play it again, Sam: History is in a foul mood again, and this is no time to come home and leave behind an unfinished European Union facing the ghosts of a revanchist Russia still claiming the Old World as its own; a strategic dark hole in the Greater Middle East, on the eve of a global Sarajevo moment; and China’s surging hegemonic power in a continent fraught with too much history and too little geography. /= / \u3e Admittedly, what is good for America may no longer be best for all the West, and what is good for the West may no longer be good for much of the Rest: the unipolar moment is irreversibly over. Yet, writing in an elegant style and with much historical insight, Serfaty argues that even with the old power map irreversibly gone, mainly to the benefit of the non-Western world, a new world order for the twenty-first century will remain dependent on the U.S. role, its capabilities and its efficacy, as well as its leadership and its purpose. [Amazon.com]https://digitalcommons.odu.edu/politicalscience_geography_books/1039/thumbnail.jp
The Siman Policy: Strengthening The State Civil Apparatus (Asn) In Fight Againts Hoax And Fake News
No full textAbstract. Circulation of hoax and fake news in the last two years has stollen public attention. The President of Indonesia, Joko Widodo (2017) said that hoax is one of the nation\u27s threats that can be caused disintegration. Based on the Ministry of Communication and Information Technology, there was 3,356 hoax spreads in social media around August 2018 to September 2019. To fight against the spread of hoax and fake news, the government has published several policies. One of them is strengthening the role of the state civil apparatus (ASN) through the Social Media Synergy of the State Apparatus (SIMAN) that was started on 2017 and has redeclared in 2019. Through this paper, the author will elaborate furthermore about what is the role of this policy and how is the implementation of strengthening the ASN capabilities to stop the spread of hoax and fake news. This study was conducted with a qualitative method through literature studies and in-depth interviews with the relevant stakeholders in the Ministry of Coordinator in Politic, Law, and Security and at the Ministry of Communication and Information. This research is expected to be able to provide an overview of the policies and also to be a guide for the state civil apparatus and related parties in determining relevant programs according to this Polic
Statistical validation of simulation models: A case study
No full textRigorous statistical validation requires that the responses of the model and the real system have the same expected values. However, the modeled and actual responses are not comparable if they are obtained under different scenarios (environmental conditions). Moreover, data on the real system may be unavailable; sensitivity analysis can then be applied to find out whether the model inputs have effects on the model outputs that agree with the experts' intuition. Not only the total model, but also its modules may be submitted to such sensitivity analyses. This article illustrates these issues through a case study, namely a simulation model for the use of sonar to search for mines on the sea bottom. The methodology, however, applies to models in general.Simulation Models;Statistical Validation;statistics
Recommended from our members
Deconstruct ‘the state’: Complex Entrepreneurialism in Urbanizing China
No full textTo what extent does "state entrepreneurialism" fit China's urbanization profile? This article revisits the debate about state and market in urban studies. It critically examines the ostensible institutional unity of the Chinese state and unfolds the complexities of entrepreneurialism urban governance in China. The author argues that "state entrepreneurialism" does not adequately encapsulate the corporate-style intergovernmental interactions and ambiguous government-business relations. Market has become an ideology that extensively influences China's intergovernmental relations and development policies. Only at exceptional periods, such as catastrophes and crisis outbreaks, does entrepreneurialism governance take a back seat to other priorities. The paper concludes that urban governance in China should be considered as complex and unsettled with actually existing interaction and conflict between divided self-interested officials and private business actors. It then discusses four fractured spatial forms that are both the arenas and the consequences of complex entrepreneurial governance
Conservation tillage enhances crop productivity and decreases soil nitrogen losses in a rainfed agroecosystem of the Loess Plateau, China
No full textConservation tillage has been recommended as one of the effective soil management practices for
mitigating the negative environmental effects of synthetic ammonia application and hence achieving
cleaner agricultural production. However, information about how long-term conservation tillage affects
agroecosystem nitrogen balance in dryland winter wheat-summer maize cropping is limited. Based on a
long-term (>9 yr) field tillage experiment and in-situ observation, we assessed the effects of different
tillage practices (i.e., chisel plough tillage (CPT), zero tillage (ZT), and conventional ploughing tillage (PT))
on soil nitrogen balance and crop productivity in the 2016e2017 and 2017e2018 growing seasons. Each
tillage practice was exposed to a local widely adopted N application rate (240 kg ha 1 yr 1) in both
seasons. Our results indicated that, compared with PT, CPT and ZT significantly (P < 0.05) reduced N2O
emissions by 39.7% (2.8 kg N ha 1 yr 1) and 55.3% (3.9 kg N ha 1 yr 1), and N leaching by 52.3%
(11.8 kg N ha 1 yr 1) and 147.7% (33.3 kg N ha 1 yr 1) across the two growing seasons, respectively. CPT
significantly enhanced crop aboveground N uptake by 4.0%, and increased the annual crop yield by 5.9
e8.1% (0.8e1.2 t ha 1 yr 1). Although CPT and ZT enhanced NH3 volatilization by 46.7% (14.6 kg N
ha 1 yr 1) and 84.3% (26.3 kg N ha 1 yr 1), the total N losses under CPT and ZT were decreased on an
average by 7.4% and 22.4%, respectively. Overall, CPT and ZT significantly increased the accumulation of
soil total nitrogen in the 0e100 cm layer by 34.8 and 54.1 kg N ha 1 yr 1, respectively. Taking N inputs
and outputs together, CPT achieved a lower N surplus mainly due to increased crop N harvest and
reduced N losses including gaseous emissions and hydrological leaching. Our findings suggest that longterm
chisel plough tillage in dryland agroecosystems could serve as a promising soil management
practice in increasing crop productivity and maintaining sustainability through enhancing N removal
from crop biomass and decreasing N losses via N2O emission and nitrate-N leaching
- …
