Search results for: U. Johnson

Items from 1 to 20 out of 84 results

article

An existential perspective on post‐retirement decisions: The role of meaning in life and social identity

Shona G. Smith, Ariane Froidevaux, Andreas Hirschi, Lars U. Johnson

Journal of Occupational and Organizational Psychology > 97 > 3 > 1166 - 1184

In the context of the ageing workforce, late‐career development implies ongoing decisions during retirement regarding one's engagement in volunteering and bridge employment activities. While prior research has emphasized the role of the meaning of work in retirement decisions, it has not examined the roles that meaning in life and identity play in decisions made during retirement. Relying on the existential...

article

Metacognitive therapy for generalized anxiety disorders in group: A case study

Ane T. Hammersmark, Odin Hjemdal, Marit Hannisdal, Hilde D. Lending, more

Journal of Clinical Psychology > 80 > 4 > 884 - 899

Objectives In Metacognitive therapy (MCT), homework is used, for example, to increase awareness of thoughts and thought processes, to challenge metacognitive beliefs in real‐life situations, and to practice new ways of processing thoughts, feelings, and symptoms. All MCT treatment manuals include homework assignments to be given between each session. Method The following study provides a detailed...

article

Caregiving in the COVID‐19 pandemic: Family adaptations following an intensive care unit hospitalisation

Sheria G. Robinson‐Lane, Amanda N. Leggett, Florence U. Johnson, Natalie Leonard, more

Journal of Clinical Nursing > 33 > 1 > 203 - 214

Aim and Objective To identify how family caregivers adapt to the caregiving role following a relative's COVID‐19‐related intensive care unit (ICU) hospitalisation. Background Family caregiving is often associated with poor health amongst caregivers which may limit their capacity to effectively support patients. Though severe COVID‐19 infection has necessitated increasing numbers of persons who...

article

Age diversity in teams: Examining the impact of the least agreeable member

Aleksandra Luksyte, Derek R. Avery, Sharon K. Parker, Ying (Lena) Wang, more

Journal of Organizational Behavior > 43 > 3 > 546 - 565

Our research examined how team age diversity can be either detrimental or beneficial for team performance depending on team agreeableness minimum. In age diverse teams, a disagreeable teammate may trigger age‐based stereotypes about his/her social group, thereby activating social categorization. This would result in decreased relational team functioning and worsened team performance. When the least...

article

Retraction Note: Soft computing methodologies for estimation of energy consumption in buildings with different envelope parameters

Sareh Naji, Shahaboddin Shamshirband, Hamed Basser, U. Johnson Alengaram, more

Energy Efficiency > 2019 > 12 > 3 > 827-827

The Editor-in-Chief has retracted this article (Naji et al. 2016a) because validity of the content of this article cannot be verified. This article showed evidence of substantial text overlap (most notably with the articles cited (Naji et al. 2014, 2016b; Akib et al. 2015)), peer review and authorship manipulation.

article

Behaviour of fibre-reinforced cementitious composite containing high-volume fly ash at elevated temperatures

Kim Hung Mo, Zhi Pin Loh, Chee Ghuan Tan, U Johnson Alengaram, more

Sādhanā > 2018 > 43 > 11 > 1-8

This research describes the properties of acrylic fibre-reinforced cementitious composite containing high-volume fly ash. In this investigation, the fly ash content (30% and 60%) and the acrylic fibre dosage (0%, 1% and 2%) were varied. Increased content of fly ash in the composite was found to be able to partially compensate the reduction in workability caused by the inclusion of fibres. On the other...

article

High volume cement replacement by environmental friendly industrial by-product palm oil clinker powder in cement – lime masonry mortar

Ramappa Ramesh Nayaka, U. Johnson Alengaram, Mohd Zamin Jumaat, Sumiani Binti Yusoff, more

Journal of Cleaner Production > 2018 > 190 > C > 272-284

Cement-lime based mortar is extremely popular for a wide range of construction around the world and conserving natural resources used in the production of such material is of capital importance. Identification of alternative materials from palm oil based industrial by-products enabled researchers to use palm oil clinker powder (POCP) as a cement replacement material; in this research work, POCP was...

article

Investigating the influence of intraindividual changes in perceived stress symptoms on injury risk in soccer

D. Clement, A. Ivarsson, U. Tranaeus, U. Johnson, more

Scandinavian Journal of Medicine & Science in Sports > 28 > 4 > 1461 - 1466

Research has shown that high levels of stress and stress responsivity can increase the risk of injuries. However, most of the research that has supported this notion has focused on between‐person relationships, ignoring the relationships at the within‐person level. As a result, the objective of this study was to investigate if within‐person changes in perceived stress symptoms over a 1‐month time...

article

Effect of aggressive chemicals on durability and microstructure properties of concrete containing crushed new concrete aggregate and non-traditional supplementary cementitious materials

Mohammed Fouad Alnahhal, U. Johnson Alengaram, Mohd Zamin Jumaat, Belal Alsubari, more

Construction and Building Materials > 2018 > 163 > C > 482-495

The increasing awareness and usage of traditional supplementary cementitious materials (SCMs) in concrete have pressured the construction industry to look for alternatives to overcome the concerns over their plentiful availability in the future. This research illustrates the performance of recycled aggregate concrete prepared with the incorporation of available industrial by-products, namely rice...

article

Influence of steel fibers on the mechanical properties and impact resistance of lightweight geopolymer concrete

Azizul Islam, U. Johnson Alengaram, Mohd Zamin Jumaat, Nurasyiqin Binti Ghazali, more

Construction and Building Materials > 2017 > 152 > C > 964-977

The influence of fiber on the mechanical properties and impact resistance of oil palm shell geopolymer concrete (OPSGPC) prepared with ground granulated blast-furnace slag (GGBS) and palm oil fuel ash (POFA) as binders is reported. The mechanical properties of OPSGPC, namely compressive, flexural, splitting tensile strengths, and modulus of elasticity were investigated; impact resistance was found...

article

Performance evaluation and some durability characteristics of environmental friendly palm oil clinker based geopolymer concrete

S.M. Alamgir Kabir, U. Johnson Alengaram, Mohd Zamin Jumaat, Sumiani Yusoff, more

Journal of Cleaner Production > 2017 > 161 > C > 477-492

Huge demand for concrete due to industrialization and urbanization has resulted in the depletion of natural resources and led to an ecological imbalance. Hence, this research focuses on alternative materials, including the utilization of waste materials as a replacement for binders and conventional aggregates. Palm oil fuel ash (POFA), ground granulated blast furnace slag (GGBS) and metakaolin (MK)...

article

Incorporation of nano-materials in cement composite and geopolymer based paste and mortar – A review

Mathialagan Sumesh, U. Johnson Alengaram, Mohd Zamin Jumaat, Kim Hung Mo, more

Construction and Building Materials > 2017 > 148 > C > 62-84

The summary of developments in partially replaced cement composite and geopolymers by industrial by-products are presented along with different nano-materials. Many significant correlations have been studied on association with the better understanding of the interfacial transition zone, microstructural performance, mix design characteristics, setting behavior, mechanical properties, durability and...

article

Shear behaviour and mechanical properties of steel fibre-reinforced cement-based and geopolymer oil palm shell lightweight aggregate concrete

Kim Hung Mo, Khai Hung Yeoh, Iftekhair Ibnul Bashar, U. Johnson Alengaram, more

Construction and Building Materials > 2017 > 148 > C > 369-375

The shear behaviour and mechanical properties (compressive, splitting tensile and flexural strengths) as well as the flexural toughness of steel fibre-reinforced cement-based and geopolymer oil palm shell lightweight aggregate concrete (OPS LWAC) were experimentally investigated in this paper. Steel fibres were added at various volume fractions for the cement-based OPS LWAC (0%, 0.5% and 1.0%) and...

article

Influence of source materials and the role of oxide composition on the performance of ternary blended sustainable geopolymer mortar

Afia Sharmin, U. Johnson Alengaram, Mohd Zamin Jumaat, Moruf Olalekan Yusuf, more

Construction and Building Materials > 2017 > 144 > C > 608-623

This research article reports the contribution of different oxides present in rice husk ash (RHA), ground granulated blast furnace slag (GGBS) and metakaolin (MK) on the performance of geopolymer mortars. Twenty-six mixes were designed with combined base materials and varied NaOH_aq concentration, that was used as one of the activators. RHA, GGBS and MK contents were varied between 15% and 70%, 0%...

article

Overview of supplementary cementitious materials usage in lightweight aggregate concrete

Kim Hung Mo, Tung-Chai Ling, U. Johnson Alengaram, Soon Poh Yap, more

Construction and Building Materials > 2017 > 139 > C > 403-418

The decrease in density of lightweight aggregate concrete (LWAC) leads to the economic savings in terms of structural design, transportation and handling costs. LWAC exhibits better insulation properties and resistance towards earthquake effects as compared to normal concrete. However, the use of higher content and better quality of cement paste in LWAC may increase the overall cost of production...

article

Valorization of Wastes from Power Plant, Steel-Making and Palm Oil Industries as Partial Sand Substitute in Concrete

Seng Kuan Ong, Kim Hung Mo, U. Johnson Alengaram, Mohd Zamin Jumaat, more

Waste and Biomass Valorization > 2018 > 9 > 9 > 1645-1654

For long, the growing amount of solid wastes from various industries has created disposal issues and caused serious environmental concerns. Increased efforts have been carried out to recycle and valorize the industrial wastes into use as concrete-making materials. Due to the current growth of construction industries around the world, natural sand is depleting rapidly and as such raises environmental...

article

Injuries in Swedish floorball: a cost analysis

U. Tranaeus, E. Heintz, U. Johnson, M. Forssblad, more

Scandinavian Journal of Medicine & Science in Sports > 27 > 5 > 508 - 513

The epidemiology of sport injuries is well documented. However, the costs are rarely discussed. Previous studies have presented such costs in specific sports or localization. No study has investigated the costs related to injuries in elite floorball. Thus, the aim of this study was to estimate cost of injuries in Swedish elite floorball players. During 1 year, 346 floorball players were prospectively...

article

Feasibility study on the use of high volume palm oil clinker waste in environmental friendly lightweight concrete

Rasel Ahmmad, U. Johnson Alengaram, Mohd Zamin Jumaat, N.H. Ramli Sulong, more

Construction and Building Materials > 2017 > 135 > C > 94-103

Huge amount of virgin materials is being used in the production of concrete and the negative impact caused by exploitation of natural resources to our eco-system is beyond recovery. In order to produce a cleaner and greener concrete, waste palm oil clinker (POC) powder, a by-product from palm oil industry was used as filler and amorphous material in the development of sustainable and environmental...

article

Thermal conductivity, compressive and residual strength evaluation of polymer fibre-reinforced high volume palm oil fuel ash blended mortar

Kim Hung Mo, Chun Siung Bong, U. Johnson Alengaram, Mohd Zamin Jumaat, more

Construction and Building Materials > 2017 > 130 > C > 113-121

This paper presents the investigation of the properties of polymer fibre-reinforced high volume palm oil fuel ash (POFA) blended mortar. Considering the targeted application for non-structural building material, the thermal conductivity, compressive and residual strengths as well as the water absorption of the mortars were evaluated. The incorporation of POFA and polymer fibres (polypropylene and...

article

Prestressing of NSM steel strands to enhance the structural performance of prestressed concrete beams

M. Obaydullah, Mohd Zamin Jumaat, U. Johnson Alengaram, Kh. Mahfuz ud Darain, more

Construction and Building Materials > 2016 > 129 > C > 289-301

Prestressing of strengthening materials can enhance the performance of strengthened structures as the materials become more efficient as a greater portion of their tensile capacity is employed. Prestressed concrete beams are widely used in the construction field, however, there is a lack of studies on the strengthening of these structural elements. This paper presents an experimental study on strengthening...

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INFONA - science communication portal

Search results for: U. Johnson

An existential perspective on post‐retirement decisions: The role of meaning in life and social identity

Metacognitive therapy for generalized anxiety disorders in group: A case study

Caregiving in the COVID‐19 pandemic: Family adaptations following an intensive care unit hospitalisation

Age diversity in teams: Examining the impact of the least agreeable member

Retraction Note: Soft computing methodologies for estimation of energy consumption in buildings with different envelope parameters

Behaviour of fibre-reinforced cementitious composite containing high-volume fly ash at elevated temperatures

High volume cement replacement by environmental friendly industrial by-product palm oil clinker powder in cement – lime masonry mortar

Investigating the influence of intraindividual changes in perceived stress symptoms on injury risk in soccer

Effect of aggressive chemicals on durability and microstructure properties of concrete containing crushed new concrete aggregate and non-traditional supplementary cementitious materials

Influence of steel fibers on the mechanical properties and impact resistance of lightweight geopolymer concrete

Performance evaluation and some durability characteristics of environmental friendly palm oil clinker based geopolymer concrete

Incorporation of nano-materials in cement composite and geopolymer based paste and mortar – A review

Shear behaviour and mechanical properties of steel fibre-reinforced cement-based and geopolymer oil palm shell lightweight aggregate concrete

Influence of source materials and the role of oxide composition on the performance of ternary blended sustainable geopolymer mortar

Overview of supplementary cementitious materials usage in lightweight aggregate concrete

Valorization of Wastes from Power Plant, Steel-Making and Palm Oil Industries as Partial Sand Substitute in Concrete

Injuries in Swedish floorball: a cost analysis

Feasibility study on the use of high volume palm oil clinker waste in environmental friendly lightweight concrete

Thermal conductivity, compressive and residual strength evaluation of polymer fibre-reinforced high volume palm oil fuel ash blended mortar

Prestressing of NSM steel strands to enhance the structural performance of prestressed concrete beams

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