CONTEXT Shortage of physicians particularly in specialty levels is considered as an important issue in Iran health system. Thus, in an uncertain environment, long-term planning is required for health professionals as a basic priority on a national scale. AIMS This study aimed to estimate the number of required neurosurgeons using system dynamic modeling. SETTING AND DESIGN System dynamic mo...

Since the beginning of State Emergency announced on March 17, 2020, caused by SARS-CoV-2 (COVID19), changes have been made due to strict measures established Ecuadorian territory. Also directly affecting educational field. Universidad de las Fuerzas Armadas ESPE located in Sangolquí, Ecuador, South América, is one many universities country that had adapt orders Secretaría Nacional Educación Sup...

The research work is focused on the sector of population that will have a job, taking into account pandemic was problem resulted in many people losing their jobs due to economic crisis affected all countries because first half year 2020 equivalent 400 million full-time were lost and there 14% drop working hours worldwide, also Lima 1.2 left without work. For this reason, dynamic analysis develo...

Using the system dynamics simulation software Vensim PLE, we built a model to simulate development of resilient human settlement in Changsha. This includes five subsystems: living, economy, society, ecology and engineering. The simulates various scenarios, based on different parameter settings predict trend from 2019–2040 It puts forward four programs under scenarios. results show that current ...

<p>Pemetikan daun teh secara mekanis dengan gunting atau mesin pemetik selain dapat mengatasi kekurangan tenaga kerja, juga meningkatkan produktivitas dan efisiensi sistem panen. Proses pemanenan dipengaruhi oleh alat pemetikan, kemiringan lahan, waktu luas areal petik, bobot hasil panen variabel lainnya yang bersifat dinamis. Peramalan faktor-faktor tersebut dilakukan melalui pendekatan ...

In recent years, the prefabricated building supply chain has received strong support from government and developed rapidly, but there are various risks in operation process. this paper, on basis of considering asymptomatic infections relapse, paper establishes a risk transmission model that considers recurrent Susceptible–Exposed–Asymptomatic–Infectious–Recovered (abbr. SEAIR) model, systematic...

An Asset Health Index (AHI) is a tool that processes data about asset’s condition. That index intended to explore if alterations can be generated in the health of asset along its life cycle. These obtained during operation, but they also come from other information sources such as geographical systems, supplier’s reliability records, relevant external agent’s etc. The provides an objective poin...