Recent Patents on Engineering - Volume 15, Issue 1, 2021

Background: Through smart micro sensor devices networked via wireless links and the Internet, wireless sensor networks offer unprecedented opportunities for diverse applications, such as healthcare, military, industry automation, and monitoring, environmental sensing, etc. It is one of the enabling technologies for many Internet of Things and cyber-physical systems. Due to the mission-critical nature of these systems, it is i Read More

Background: Multi-stress accelerated life test (MALT) has obtained increasing attention in reliability assessment due to its advantages. Started with constant-stress ALT with two stress variables, MALT has developed a lot during the past decades. In MALT, the design of the test plan and data analysis are two crucial aspects. Numerous researchers have discussed these two aspects and some important methods of planning an Read More

Background: Nowadays, the manufacturing industry is much more fiercely competitive and global than ever before. For sustainable increases in market share and profitability, manufacturers are aiming to improve the quality of products and maintain the reliability of manufacturing systems. Objective: Therefore, to simultaneously optimize the quality and reliability for manufacturing systems has become an important researc Read More

Background: Modern medical researches show that the health of a population is closely related to their behavior, environmental factors, social and economic conditions, aging and genetic susceptibility. Therefore, it is very important to study the relationship between these factors and health of a population. Objective: This study reviews the latest research progress in population health management and life/disease risk assessment Read More

Background: In a multi-state system, either the entire system or its components will have more than two states. Different kind of multi-state systems have been investigated, such as multistate series-parallel systems, multi-state k-out-of-n systems and multi-state linear consecutive-k-outof- n systems. Methods: Performability analysis is concerned with the calculation of probability distribution of different system perfor Read More

Background: Environmental protection is increasingly being emphasized upon, and higher requirements are put forward for the development of the geological prospecting industry. Researchers have been trying their best to explore the mineral resources in the deep part of the earth and the areas with poor working conditions, and avoid the damage of mining development to the environment, so as to achieve the goal of gree Read More

Background: Oil well cement retarder is an additive that can extend time for thickening cement slurry, which can ensure the safety of cement. At present, the oil well cement retarder is mainly composed of synthetic materials, which are mainly divided into three major categories: compound polymer, AMPS polymer and non-AMPS. Methods: In this paper, the research status of synthetic oil well cement retarder in recent years Read More

Background: The purpose of this paper is to critically review the studies that deal with advanced product design techniques in order to identify the research gaps and provide recommendations for future research. Methods: To this end, a systematic review of literature on advanced product design techniques was conducted over a period of nearly ten years between 2010 and 2019, and a new model has been developed on t Read More

Background: Remaining Useful Life (RUL) estimation is the central mission to the complex systems’ prognostics and health management. During the last decades, numbers of developments and applications of the RUL estimation have proliferated. Objective: As one of the most popular approaches, stochastic process-based approach has been widely used for characterizing the degradation trajectories and estimating RU Read More

Background: Joint investment has increasingly become a popular investment method for venture capitalists. From the two traditional perspectives of investors and start-ups, research on Joint Venture Capital in the past 40 years has achieved rich results. Most recent literature is based on research from the perspective of organisational economics, which further advances the vertical development of research on Joint Ventu Read More

Background: The reform and innovation of recording technology have resulted in recording becoming an exciting, developing project. Against the background of Internet +, traditional analogue technology has developed into digital recording technology, playing an important role in various fields. Venture capital in digital recording technology projects has also attracted attention from all circles. Objective: This paper aims to, Read More

Background: With the rapid development of computer and Internet technologies, the measurement of software reliability has become a key point. Software reliability modeling is an important way to measure software reliability. However, there are many disadvantages in the classic model. Therefore, this paper reviews current researches in software reliability and discusses ways to improve the model from a new perspectiv Read More

Background: In this paper, a two-pole 3 kW three-phase induction motor is taken as an example to establish a two-dimensional finite element model. The correctness of the model is verified by comparing the finite element calculation data with the experimental data. Methods: On this basis, the influence of electromagnetic characteristics of different shell materials on the motor yoke saturation degree, loss, current and Read More

Background: In the production process of apple orchard, the labor needed for apple harvest accounts about 40% of the whole production process. Objective: The auxiliary device of apple harvest was designed to improve production efficiency and reduce labor cost. Methods: This device was composed of four parts: fruit collecting mechanism, horizontal conveying mechanism, vertical conveying mechanism and rotary packing Read More