There have been repeated security incidents in megaproject tunnels, construction issues are particularly serious, and the management of risks is receiving increasing attention. This study was conducted to improve efficiency tunnel risk management, process adopted as an entry point, based on Observe-Orient-Decision-Action (OODA) model, influencing factors index system for tunnels from four dimen...

La pandemia ocasionada por la COVID-19 ha sido uno de los eventos más recientes que afectado sociedad humana en sus aspectos sociales, económicos, culturales y educativos. El objetivo este artículo fue, a partir un modelo simulación continua medio dinámica sistemas, definir el comportamiento evolución ciudad Bogotá. Se tomaron datos Salud Data respecto cantidad contagios muertes durante año pan...

The incentive of renewable sources has provided a high growth to photovoltaic energy (PV) in the electric matrix, today it is essential that planning practices are prepared operate, monitor and propose scenarios ideas insertion or withdrawal policies benefits all agents this chain operation. Thus, model presented for projection diffusion systems (PVS) commercial consumers Group B served by volt...

Saat ini UMKM terus bersaing dalam memberikan pelayanan yang maksimal. Salah satu upaya dilakukan menggunakan teknologi informasi. Sehingga saat informasi juga digunakan kegiatan promosi hingga perhitungan keuntungan penjualan. Namun masih terdapat kurangnya pengetahuan pengelolaan khususnya sosial media pemanfaatannya untuk meningkatkan penjualan produk UMKM. pada pengabdian masyarakat akan me...

Most models used in climate economics so far are full-employment models. In Germany, as in other countries suffering from persistent unemployment, climate policy can only be successful if it is embedded in an economic policy that generates additional jobs at a large scale. To investigate the possibility for such embedding, a long-term model of the German economy is needed. lagom sim is such a m...

Crop coefficients (Kc) are important for the development of irrigation schedules, but few studies on Kc focus on saline soils. To propose the growth-stage-specific Kc values for sunflowers in saline soils, a two-year micro-plot experiment was conducted in Yichang Experimental Station, Hetao Irrigation District. Four salinity levels including non-salinized (ECe = 3.4–4.1 dS·m–1), low (ECe = 5.5–...

Under the United Nations Framework Convention on Climate Change (UNFCCC) the nations of the world have pledged to limit warming to no more than 2 C above preindustrial levels. However, negotiators and policymakers lack the capability to assess the impact of greenhouse gas (GHG) emissions reduction proposals offered by the parties on warming and the climate. The climate is a complex dynamical sy...

The milk production process on an industrial ranch consists of various and regular activities, with each requiring a proper management approach. Different variables also affect the process, maximum is achieved by identifying critical variables. This work was motivated Fereidan Ahrar in Isfahan, Iran, which seeks to identify optimize important increase production. unit considers livestock omissi...

Abstract In the energy performance contracting (EPC) mode, an effective way to achieve green public buildings, information asymmetry among stakeholders in operation phase is critically adverse energy-saving effect of buildings. This paper constructs evolutionary game model between users and companies (ESCOs) buildings under premise limited rationality. Vensim PLE software used build correspondi...

The development of blockchain technology promotes the evolution industrial ecosystem, and value co-creation in ecosystem has become an important factor for sustainable coordinated industry ecosystem. By answering question how governance mechanisms affect this paper aims to clarify realization mechanism Based on transaction cost theory social exchange theory, are divided into contract trust gove...