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Jun 7, 2021

The Riccati-Bernoulli Sub-ODE Technique for Solving the Deterministic (Stochastic) Generalized-Zakharov System

This article concerns with the construction of the analytical traveling wave so- lutions for the Generalized-Zakharov System by the Riccati-Bernoulli Sub- ODE technique. Also, we will discuss this technique in random case by using random traveling wave trans- formation in order to find what is the effect of the randomness input for this technique. We presented the Generalized-Zakharov System as an example to show the difference effect between the deterministic and stochastic Riccati-Bernoulli Sub-ODE technique. The first moment of random solution is computed for different statistical probability distributions.

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Jun 10, 2021

Basic residential neighborhood infrastructure financing in Nigeria urban cities: Community development associations (CDAs)-based approach

The study examined the community-based approach to finance basic public infrastructures in residential neighborhoods. The primary objectives of the study were to determine the condition of public infrastructures, the level of community engagement, the modalities of financing and the prominent influencing factors. The study adopted convenience sampling and questionnaire survey techniques. A total of 120 questionnaires were administered to residents of selected high-income communities (HICs) and low/medium-income communities (L/MICs), out of which 48 (80%) and 52 (86.67%) were retrieved, respectively, and analyzed. The study deployed descriptive statistics of mean and standard deviation models and mean weighted score to analyze the data. The study found that the residents were satisfied with the security of the neighborhoods but deplored the state of the public potable water infrastructure in both communities. However, the residents in the HICs enjoy a better condition of road infrastructure compared with L/MICs. The residents in both communities indicated a high level of involvement in the financing of public infrastructures, with major engagement in security and waste disposal/management infrastructures. However, the HICs engaged more in road grading/maintenance, while the provision of community potable water was given as a priority by the L/MICs. The major mode of financing basic communal infrastructures is through membership levy/contribution, and prominent influencing factors are cooperation among members, fundraising and income status. Therefore, while private-sector support funds, such as from the CDAs, help in cushioning the effects of basic infrastructure decay, governments at all levels should provide an enabling environment that will motivate mutual communal relationships through integrated infrastructure policies.

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Jun 15, 2021

Critical success factors for development of public-private-partnership airports in India

Examining the interrelationships between critical success factors (CSFs) is of importance for the successful development of PPP airports. Many studies are available for the identification of CSFs for infrastructure projects, but very limited research have been conducted so far on investigating the interrelationships between the CSFs of PPP airports. The study is based on the institutional theory, which considers the exploration of the relationships between different institutional factors. The results show that Process Characteristics have comparatively more impact on Public Characteristics and, similarly, Cooperative Environment has more impact on Process Characteristics. However, Process Characteristics have a less significant impact on Private Characteristics. The study also revealed that to achieve high-quality services and the protection of public interest under a PPP mechanism, proper government supervision is required. Moreover, customers’ satisfaction and their opinion are also responsible for the achievement of high-quality services and better value for money.

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Jun 17, 2021

The development of low sugar bitter melon-green tea compound beverage

With fresh bitter melon and green tea as main ingredients, xylitol, sucrose and citric acid as auxiliary ingredients, a new cool health tea beverage was developed. The optimum formula of low sugar bitter melon green tea compound beverage was developed by single factor experiment and orthogonal test based on sensory evaluation. The results showed that the optimum formula was as follows: Bitter melon juice was added at 7%, green tea extract was added at 20%, total xylitol and sucrose was 6% (mass ratio 1:1), citric acid was added at 0.2%, and the volume was fixed to 100% with deionized water. The product has light green color, harmonious aroma, moderate acidity and sweetness, and clear texture. The aftertaste is long, with tea polyphenol content of 342 mg/kg, soluble solids of 5.2% and pH 5.8.

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Jun 23, 2021

Synthesis and application of nano-MH/MPB as intumescent flame retardant (IFR)

Magnesium hydroxide/melamine phosphate borate (nano MH/MPB), a novel nano-composition intumescent flame retardant, was synthesized with the in-situ reaction method from MgCl₂·6H₂O sodium hydroxide (NaOH) and melamine phosphate borate (MPB) in the absence of H₂O. The structure of the product was confirmed by EDAX IR and XRD. The effects of reaction temperature and time on the dimension of magnesium hydroxide were observed. The effects of mass ratio of magnesium hydroxide to MPB on the flame retardancy of nano-MH/MPB/EP were examined with the limiting oxygen test. The results show that the optimal condition of synthesis of MH/MPB is m_MH/m_MPB = 0.25, reacting under 75 ℃ for 30 minutes. Finally, the mechanism for flame retardancy of nano-MH/MPB/EP was pilot studied by means of IR of char layer and TG of MH/MPB.

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Jun 29, 2021

Inter-regional development in China: An assessment

China’s regional planning and development has been a key national priority since the start of economic reform and opening up. China’s regional development strategy has constantly evolved and has shifted to prioritizing integrated areas and mega-clusters to promote internal connectivity, increase urbanization and employment, and consequently, domestic consumption. This is distinct from past regional rebalancing initiatives, which were mainly aimed at reducing regional income gaps and relieving pressure from population flows to developed coastal regions. To support regional integration and sustain economic growth, institutional or structural policies to remove factor market distortions are just as necessary as increased investment in physical infrastructure, given that China’s domestic market is huge but highly fragmented. As China faces rising external geopolitical and global economic uncertainties, its regional development strategy will be to emphasize more on “dual circulation” to boost domestic demand and strengthen China’s supply chain resiliency, while still enhancing trade linkages with global markets to spur competition and support its industrial upgrading efforts.

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