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Article
Modeling and analysis of workpiece stability based on the linear programming method
After being located on a machine bed, a workpiece will be subject to gravity and cutting forces during the machining operation. In order to keep the locating precision as well as the production safety, it is n...
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Article
The most powerful tool for the structural analysis of tungsten suboxide nanowires: Raman spectroscopy
Crystalline tungsten suboxide nanowires were grown on silicon substrates by thermal evaporation of tungsten powder in a flow of argon gas without any catalyst. With different growth temperatures, two kinds of ...
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Article
An extended stress-based method for orientation angle optimization of laminated composite structures
Orientation optimization plays an important role in the lay-up design of composite structures. Earlier orientation optimization methods face the main problem of huge number of design variables. Recently, a pat...
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Article
Impact of Financial and Educational Interventions on Maternity Care: Results of Cluster Randomized Trials in Rural China, CHIMACA
To report on the design and basic outcomes of three interventions aimed at improving the use and quality of maternity care in rural China: financial interventions, training in clinical skills, and training in ...
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Article
Numerical implementation of strain rate dependent thermo viscoelastic constitutive relation to simulate the mechanical behavior of PMMA
In this work, a nonlinear viscoelastic constitutive relation was implemented to describe the mechanical behavior of a transparent thermoplastic polymer polymethyl methacrylate (PMMA). The quasi-static and dyna...
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Article
A biarc-based shape optimization approach to reduce stress concentration effects
In order to avoid stress concentration, the shape boundary must be properly designed via shape optimization. Traditional shape optimization approach eliminates the stress concentration effect by using free-for...
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Article
Open AccessCesarean section in Shanghai: women’s or healthcare provider’s preferences?
Cesarean section (CS) rate has increased rapidly over the past two decades in China mainly driven by non-medical factors. This study was to compare recalled preferences for CS among first-time mothers in early...
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Article
Structural topology optimization with constraints on multi-fastener joint loads
This paper addresses an important problem of design constraints on fastener joint loads that are well recognized in the design of assembled aircraft structures. To avoid the failure of fastener joints, standar...
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Article
A Multi-point constraints based integrated layout and topology optimization design of multi-component systems
The integrated layout and topology optimization is to find proper layout of movable components and topology patterns of their supporting structures, where two kinds of design variables, i.e. the structural pse...
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Article
Study on the construction mechanism of stability lobes in milling process with multiple modes
The stability of milling process dominated by multiple modes was traditionally predicted in the time domain by only selecting the most flexible mode. This paper theoretically studies the construction mechanism...
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Article
Open AccessMicroRNA panels as disease biomarkers distinguishing hepatitis B virus infection caused hepatitis and liver cirrhosis
An important unresolved clinical issue is to distinguish hepatitis B virus (HBV) infection caused chronic hepatitis and their corresponding liver cirrhosis (LC). Recent research suggests that circulating micro...
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Article
Open AccessSocioeconomic inequalities in stillbirth rates in Europe: measuring the gap using routine data from the Euro-Peristat Project
Previous studies have shown that socioeconomic position is inversely associated with stillbirth risk, but the impact on national rates in Europe is not known. We aimed to assess the magnitude of social inequal...
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Article
Shape preserving design with structural topology optimization
The purpose of this paper is to demonstrate a shape preserving topology optimization design approach to suppress the war** deformation of local structural domains. As structural deformation consists of rigid...
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Article
Shape optimization of axisymmetric solids with the finite cell method using a fixed grid
In this work, a design procedure extending the B-spline based finite cell method into shape optimization is developed for axisymmetric solids involving the centrifugal force effect. We first replace the tradit...
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Article
Open AccessA descriptive longitudinal study protocol: recurrence and pregnancy post-repair of obstetric fistula in Guinea
Obstetric fistula is a serious medical condition which affects women in low income countries. Despite the progress of research on fistula, there is little data on long term follow-up after surgical repair. The...
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Article
Open AccessFactors associated with the failure of obstetric fistula repair in Guinea: implications for practice
The prevention and treatment of obstetric fistula still remains a concern and a challenge in low income countries.
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Article
Open AccessPractical lessons for bringing policy-makers on board in sexual and reproductive health research
The need to translate research into policy, i.e. making research findings a driving force in agenda-setting and policy change, is increasingly acknowledged. However, little is known about translation mechanism...
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Article
Topology Optimization in Aircraft and Aerospace Structures Design
Topology optimization has become an effective tool for least-weight and performance design, especially in aeronautics and aerospace engineering. The purpose of this paper is to survey recent advances of topolo...
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Article
Dynamic dam** of machining vibration: a review
Machining is one of the important manufacturing processes used in industry. Dynamic interaction between the tool and the workpiece may lead to the occurrence of chatter vibrations, which are associated with pr...
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Article
Integrated layout and topology optimization design of multi-frame and multi-component fuselage structure systems
The purpose of this paper is to present an extended integrated layout and topology optimization method dealing with the multi-frame and multi-component fuselage structure systems design. Considering an aircraf...
