This review comprehensively analyzes the energy use and demand in developing countries and developed countries, and forecasts the future energy supply and demand in combination with the past development trend.

Variation of public sentiment over time for Bangladeshi people.

This research aims at developing a model for sentiment analysis of social media data in which dimensionality reduction and natural language processing with part of speech tagging are incorporated. The model is tested using Naïve Bayes, support vector machine, and K-nearest neighbors algorithms, and its performance compared with that of two other sentiment analysis models. Experimental results show that the model improves sentiment analysis performance using machine learning techniques.

We propose a work-order assignment method based on event extraction and external knowledge to address the problem of low efficiency with manual allocation. The assignment method is composed of four parts: (1) semantic encoding layer, (2) event extraction layer, (3) external knowledge embedding layer, (4) assignment layer.

In order to meet the requirements of contactless, large amount of information and high-precision human-computer interaction in the intelligent era, as well as the continuous improvement of display resolution, we get the best ratio between icon size and display resolution and verify it by using eye tracking and EEG experiments. It is concluded that 1:309 is an effective and universal ratio. Because different display carriers have different resolutions, the use of this ratio can make icons have efficient recognition under different display resolutions, and provide a reference for icon design in different interactive interfaces based on computer software.

This article is a review of symplectic integration for the wave equation in moving media via a simple operator split. It was found this integration interferes with the advection term.

This article proposed a numerical method to calculate the ablation wear of the barrel. The research content of this article can be used to predict the life of gun steel materials in actual combat use. It includes secondary development technology, experimental verification and other steps, and the article structure is complete. This research is currently leading in the field of gun steel research.

• Review of the state of readiness of small and medium enterprises (SMEs) in developing countries for Industry 4.0.
• Explores the challenges and gaps in SMEs toward Industry 4.0 in developing countries.
• Industry 4.0 promises to enhance manufacturing capability while sustaining demands.

Large eddy simulation is used to simulate the process of flame acceleration and deflagration to detonation transition (DDT) of methane-air mixtures in small scale 3D channel. This study reveals a principle feature of flame acceleration in channels with no-slip walls, and the interaction between transverse waves, the pressure pulse and oblique shock waves promote DDT.

According to meso-irreversible-thermodynamics, kinetics- enhancements observed in isothermal microwave-assisted chemical syntheses are caused by a major non-thermal microwave effect (NTME). Creation of this NTME is attributed to a total enthalpy augmentation inside the resonant microwave (RM)-irradiated chemical system: RM energy-input first promotes the total molar enthalpy of the irradiated reactant(s) at temperature, which consequently motivates a reduction in activation enthalpy of the process along its mesoscopic reaction coordinate for remarkable rate-enhancement.