scholarly journals Exploring New Strategies for Ultrahigh Strength Steel via Tailoring the Precipitates

2021 ◽  
Vol 8 ◽  
Author(s):  
Jialong Tian ◽  
Zhouhua Jiang
Keyword(s):  
Research Effort ◽  
Ultrahigh Strength ◽  
Ultrahigh Strength Steel ◽  
Significant Research ◽  
Toughness Variation ◽  
Lightweight Engineering ◽  
And Performance ◽  
New Generation ◽  
Variation Trends ◽  
New Strategies

Ultrahigh-strength (UHS) steels have shown great potential in the field of high-end equipment manufacturing in demand of lightweight engineering and performance upgrade. A significant research effort has been directed toward the development of advanced UHS steels with excellent combination of strength and toughness. In the course of development, tailoring precipitates by means of composition design and process optimization is absolutely a critical module. In this mini review, typical UHS steels strengthened by carbides and intermetallics are systematically summarized and discussed. With the increase of strength, the toughness losses of UHS steels strengthened by carbides and intermetallics have been compared in detail. In particular, the in-depth mechanisms leading to various strength/toughness variation trends have been discussed, extracting the bottleneck in developing new-generation UHS steels containing merely one type of precipitate. Meanwhile, prospects on designing advanced UHS steels strengthened by coexisting dispersive precipitates have been proposed to achieve better performance.

scholarly journals Materials for Orthopedic Bioimplants: Modulating Degradation and Surface Modification Using Integrated Nanomaterials

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 264 ◽  
Author(s):  
Harbhajan Ahirwar ◽  
Yubin Zhou ◽  
Chinmaya Mahapatra ◽  
Seeram Ramakrishna ◽  
Prasoon Kumar ◽  
...  
Keyword(s):  
Surface Modification ◽  
Surface Properties ◽  
Bone Repair ◽  
Abiotic Factors ◽  
Antibacterial Activities ◽  
Host Acceptance ◽  
Factors Affecting ◽  
Significant Research ◽  
And Performance ◽  
New Generation

Significant research and development in the field of biomedical implants has evoked the scope to treat a broad range of orthopedic ailments that include fracture fixation, total bone replacement, joint arthrodesis, dental screws, and others. Importantly, the success of a bioimplant depends not only upon its bulk properties, but also on its surface properties that influence its interaction with the host tissue. Various approaches of surface modification such as coating of nanomaterial have been employed to enhance antibacterial activities of a bioimplant. The modified surface facilitates directed modulation of the host cellular behavior and grafting of cell-binding peptides, extracellular matrix (ECM) proteins, and growth factors to further improve host acceptance of a bioimplant. These strategies showed promising results in orthopedics, e.g., improved bone repair and regeneration. However, the choice of materials, especially considering their degradation behavior and surface properties, plays a key role in long-term reliability and performance of bioimplants. Metallic biomaterials have evolved largely in terms of their bulk and surface properties including nano-structuring with nanomaterials to meet the requirements of new generation orthopedic bioimplants. In this review, we have discussed metals and metal alloys commonly used for manufacturing different orthopedic bioimplants and the biotic as well as abiotic factors affecting the failure and degradation of those bioimplants. The review also highlights the currently available nanomaterial-based surface modification technologies to augment the function and performance of these metallic bioimplants in a clinical setting.

Interactive, direct and digital marketing

2014 ◽  
Vol 8 (1) ◽  
pp. 4-17 ◽  
Author(s):  
Merlin David Stone ◽  
Neil David Woodcock
Keyword(s):  
Business Intelligence ◽  
Design Methodology ◽  
Research Effort ◽  
Review Of Literature ◽  
Interactive Marketing ◽  
Content Type ◽  
Significant Research ◽  
Self Service ◽  
And Performance ◽  
Management Capabilities

Purpose – The purpose of this article is to explain how the management of the two areas business intelligence (BI) and customer insight (CI) needs to be brought together to support a company's interactive marketing. Design/methodology/approach – The article is based on the author's work in consultancy and in assessing client company's customer management capabilities and performance, as well as a review of some of the literature on BI and CI. Findings – The article suggests that companies need to pay close attention to the governance of BI, as a self-service approach to BI becomes increasingly used by CI teams. Research limitations/implications – The review of literature carried out by the authors suggests that the interface between BI and CI is poorly researched and would benefit from a significant research effort. Originality/value – The focus on the interface between BI and CI is relatively new. The authors hope that it will trigger significant research.

A Literature Survey on Algorithms and Hardware Architectures of Max-Log-MAP Demapping

2021 ◽  
pp. 2230001
Author(s):  
Mostafa Rizk ◽  
Amer Baghdadi ◽  
Michel Jézéquel
Keyword(s):  
Research Effort ◽  
High Order ◽  
Performance Criteria ◽  
Hardware Complexity ◽  
Map Algorithm ◽  
Resource Requirements ◽  
Hardware Resource ◽  
Modulation Schemes ◽  
And Performance ◽  
Log Map

Emergent wireless communication standards, which are employed in different transmission environments, support various modulation schemes. High-order constellations are targeted to achieve high bandwidth efficiency. However, the complexity of the symbol-by-symbol Maximum A Posteriori (MAP) algorithm increases dramatically for these high-order modulation schemes. In order to reduce the hardware complexity, the suboptimal Max-Log-MAP, which is the direct transformation of the MAP algorithm into logarithmic domain, is alternatively implemented. In the literature, a great deal of research effort has been invested into Max-Log-MAP demapping. Several simplifications are presented to meet with specific constellations. In addition, the hardware implementations dedicated for Max-Log-MAP demapping vary greatly in terms of design choices, supported flexibility and performance criteria, making them a challenge to compare. This paper explores the published Max-Log-MAP algorithm simplifications and existing hardware demapper designs and presents an extensive review of the current literature. In-depth comparisons are drawn amongst the designs and different key performance characteristics are described, namely, achieved throughput, hardware resource requirements and flexibility. This survey should facilitate fair comparisons of future designs, as well as opportunities for improving the design of Max-Log-MAP demappers.

scholarly journals Systematic review of evidence underpinning non-pharmacological therapies in dementia

2018 ◽  
Vol 42 (4) ◽  
pp. 361 ◽  
Author(s):  
Richard Olley ◽  
Andrea Morales
Keyword(s):  
Systematic Review ◽  
Sleep Disturbances ◽  
Research Effort ◽  
Evidence Base ◽  
Pharmacological Therapy ◽  
Sufficient Evidence ◽  
Behavioural Treatment ◽  
Significant Research ◽  
Research Gap ◽  
Meta Analyses

Objective Dementia is one of the most common illnesses worldwide, and is one of the most important causes of disability in older people. Currently, dementia affects over 35 million people around the globe. It is expected that this number will increase to 65.7 million by 2030. Early detection, diagnosis and treatment to control the principal behaviour symptoms may help reduce these numbers and delay the progression to more advanced and dangerous stages of this disorder with resultant increase quality of life for those affected. The main goal of the present systematic literature review was to examine contemporary evidence relating to non-pharmacological therapy in the treatment of dementia. Methods To achieve the study goal, the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement was used. Results This study identified the five most common behaviours in patients with dementia as aggression, wandering, agitation, apathy and sleep disturbances. Two non-pharmacological therapies were the most studied treatment: music therapy and aromatherapy. Ten other non-pharmacological therapies were also identified, but these lack a sufficient evidence-base. Conclusion Although all the therapies identified could be used as part of the treatment of behavioural symptoms, there is insufficient evidence relating to the indications, appropriate use and effectiveness of these therapies to apply in each behavioural treatment. Thus, the present study has demonstrated a significant research gap. What is known about the topic? Despite the widespread use of many different types of therapies, there is limited evidence regarding the efficacy of non-pharmaceutical therapies deployed in the management of behaviours of concern manifested by some people who suffer with dementia in all its forms. What does this paper add? This systematic review examines contemporary evidence from the literature to determine whether there is an evidence base available that would underpin the use of these therapies. This report on a PRISMA systematic review of the available literature demonstrates that only two therapies have some evidence to underpin the use of these non-pharmaceutical therapies and that a significant research gap is exists. What are the implications for practitioners? The implications for practitioners is that significant research effort is required to determine the efficacy of many of the therapies that are currently deployed, and thus many of the therapies used lack an evidence base at this time.

Health, comfort and performance of children in classrooms – New directions for research

2016 ◽  
Vol 26 (8) ◽  
pp. 1040-1050 ◽  
Author(s):  
Philomena M. Bluyssen
Keyword(s):  
School Environment ◽  
Learning Ability ◽  
Toxic Exposure ◽  
Literature Study ◽  
New Directions ◽  
And Performance ◽  
New Generation ◽  
Acoustic Conditions

Children spend more time in schools than in any other place except at home. Children are more susceptible than adults to effects of toxic exposure, but also to poor acoustic conditions. It is known for some time that unsatisfactory environmental conditions, can have both short-term and long-term health effects, and can affect productivity or learning ability of the children. The underlying literature study focusses on the role of the indoor school environment on the health, comfort and performance of children in classrooms. In the last decades, many studies all over the world have been performed to document the indoor environment in classrooms and to examine relations with diseases and disorders. An inventory is made of these studies, major identified issues are discussed and ‘new’ directions of research are proposed. It is concluded that new generation research studies should be focussed on engagement of the children in an active way, preferable in semi-lab environments, and taking account of all aspects and interactions between them.

scholarly journals The Social Contexts of Resilient Architecture

2021 ◽  
pp. 625-645
Author(s):  
Terri Peters
Keyword(s):  
Natural Resources ◽  
Environmental Performance ◽  
Climate Adaptation ◽  
Well Being ◽  
Social Contexts ◽  
The Social ◽  
Resilient Design ◽  
Design Projects ◽  
And Performance ◽  
New Generation

In architecture, the term resilience tends to be used narrowly describe a building’s structural and environmental performance in quantitative terms—but can a building be called resilient if it fails to make inspiring spaces for people, promote well-being, or improve people’s experience? The chapter begins by exploring how the term is currently evaluated in and around buildings, through discussion of related concepts such as sustainability, passive survivability, and performance gaps. The chapter traces the emergence of a new generation of building evaluation metrics and certification systems that are focused not solely on environmental performance but also consider synergies between people’s experience and our natural resources, such as Active House. The work of GXN and 3XN in Denmark are discussed, in relation to how their research explores resilience and sustainability by focusing on the social aspects of how buildings make people feel. Examples from the multifunctional, process-based strategies used in a series of new climate adaptation renovations in Copenhagen, Denmark, are discussed as exemplary resilient design projects that address neighborhood flooding by simultaneously improving the qualities of public spaces and better connecting people to nature. The chapter concludes with a discussion of how locally specific and socially focused designs can support more resilient environments for people.

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