Search results

1 – 6 of 6
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 7 June 2021

Violeta Carvalho, Bruno Arcipreste, Delfim Soares, Luís Ribas, Nelson Rodrigues, Senhorinha Teixeira and José C. Teixeira

This study aims to determine the minimum force required to pull out a surface mount component in printed circuit boards (PCBs) during the wave soldering process through both…

126

Abstract

Purpose

This study aims to determine the minimum force required to pull out a surface mount component in printed circuit boards (PCBs) during the wave soldering process through both experimental and numerical procedures.

Design/methodology/approach

An efficient experimental technique was proposed to determine the minimum force required to pull out a surface mount component in PCBs during the wave soldering process.

Findings

The results showed that the pullout force is approximately 0.4 N. Comparing this value with the simulated force exerted by the solder wave on the component ( 0.001158 N), it can be concluded that the solder wave does not exert sufficient force to remove a component.

Originality/value

This study provides a deep understanding of the wave soldering process regarding the component pullout, a critical issue that usually occurs in the microelectronics industry during this soldering process. By applying both accurate experimental and numerical approaches, this study showed that more tests are needed to evaluate the main cause of this problem, as well as new insights were provided into the depositing process of glue dots on PCBs.

Details

Soldering & Surface Mount Technology, vol. 34 no. 1
Type: Research Article
ISSN: 0954-0911

Keywords

Access Restricted. View access options
Article
Publication date: 16 January 2020

Juliane Barroso Leal, Juçara Barroso Leal, Joaline Barroso Portela Leal, Yan de Lima Borges, Maria Ivone Leal de Moura, Alfredo Anderson Teixeira-Araujo, Venilson Serafim da Costa and Ferdinando Oliveira Carvalho

This paper aims to verify the effect of 12 weeks of grape juice (GJ) consumption associated with aerobic exercise on the variation of the hypertensive elderly pressure.

168

Abstract

Purpose

This paper aims to verify the effect of 12 weeks of grape juice (GJ) consumption associated with aerobic exercise on the variation of the hypertensive elderly pressure.

Design/methodology/approach

A total of 45 hypertensive elderly of both sexes were distributed into: control group (CG, n = 10), exercise group (EG, n = 10), juice group (JG, n = 12) and juice and exercise group (JEG, n = 13). Blood pressure and heart rate were checked weekly before exercise in JG and JEG, and before and after intervention in all groups, with JG and JEG supplemented with 200 mL of GJ. Three weekly sessions of moderate walking were applied.

Findings

There was a reduction in EG, JG and JEG for systolic pressure and diastolic only for JG and JEG. The GJ consumption to the practice of aerobic exercise provided reductions in the arterial pressure of hypertensive, in addition to stabilization of the diastolic pressure.

Research limitations/implications

Although the objective of the study was to compare the effect and value of intervention with controls, the study had no intervention in food consumption, which could have led to more significant results. There was a limitation in the control drink, leading the study not to be blind, which may have impaired the results. However, it is probably not a bias, as the groups were divided by residence area, and therefore, had no direct contact with the other groups. Another limitation was that the sample size was still small, which would lead to more reliable results. Finally, although the existing limitations cannot be disregarded, the results of this research are very promising, especially when the objective is the effect of GJ and aerobic exercise on blood pressure, with the possibility of implementing supplemental GJ and the inclusion or not of exercise to the hypertensive elderly.

Originality/value

The paper deals with the benefits of GJ consumption associated with aerobic physical exercise on the blood pressure of elderly hypertensive patients. Considering that GJ along with physical exercise was enough to reduce the blood pressure of hypertensive elderly, this may be a new model to be used to reduce and/or control blood pressure, and GJ and the exercise to be part of the daily life of the population.

Details

Nutrition & Food Science , vol. 50 no. 5
Type: Research Article
ISSN: 0034-6659

Keywords

Access Restricted. View access options
Book part
Publication date: 13 December 2023

Cândido Borges, Fernando Dolabela and Louis Jacques Filion

As of 2020, London's Financial Times had ranked Fundação Dom Cabral (FDC) as one of the world's leading executive education institutions and the top such institution in Latin…

Abstract

As of 2020, London's Financial Times had ranked Fundação Dom Cabral (FDC) as one of the world's leading executive education institutions and the top such institution in Latin America for 15 consecutive years. In 2011, FDC was also ranked fifth on the Financial Times' list of the 40 most respected business schools in the world. For FDC itself and for its co-founder, Emerson de Almeida, this recognition was a wonderful way of celebrating the 35th anniversary of an institution that has become a leader in applied management education in Brazil.

How did this young Brazilian institution achieve this? As is the case for any great undertaking, many people played crucial roles in its creation and consolidation. However, its history is closely tied to the life of its co-founder, Emerson de Almeida.

Emerson was FDC's Chief Executive from its foundation in 1976 until 2012, when he became President of its Board of Governance.1 He is primarily an innovator and drew his inspiration from visits to world-renowned business schools. Once he understood the needs arising from executive thinking processes, he was able to adapt these schools' best practices to suit the Brazilian culture and context.

‘You must always try the impossible’, he says. This case study presents the story of an exceptional institutional intrapreneur who championed and led the transformation of executive education in Brazil.

Access Restricted. View access options
Article
Publication date: 14 December 2021

Slađana Savović, Predrag Mimović and Violeta Domanović

This paper explores the impact of international acquisitions on the efficiency and productivity of the cement industry in an emerging economy.

251

Abstract

Purpose

This paper explores the impact of international acquisitions on the efficiency and productivity of the cement industry in an emerging economy.

Design/methodology/approach

The data envelopment analysis (DEA) and Malmquist index (MI) are used to calculate the partial efficiency and productivity of individual inputs (materials, labour and fixed assets), as well as the total factor efficiency and productivity during the period 2000–2018. DEA and MI are combined with bootstrapping to perform succinct statistical inferences for determining the accuracy of results. In this paper we apply the input-oriented CCR DEA Window model. With respect to the level of analysis, data was collected from individual companies and then aggregated data at the industry level.

Findings

The research results show that international acquisitions positively affect efficiency of the cement industry in the long term. Efficiency of capital is lower in the short period after acquisitions. Additionally, international acquisitions positively affect partial productivity, as well as total factor productivity of the cement industry.

Practical implications

The results of the study may be significant for managers and policy makers to design appropriate strategies for the improvement of the cement industry performance over time.

Originality/value

Research in emerging economies related to subject matter is limited, and this is one of the earliest research studies which explore change in efficiency and productivity at the level of Serbian cement industry.

Details

International Journal of Emerging Markets, vol. 18 no. 10
Type: Research Article
ISSN: 1746-8809

Keywords

Access Restricted. View access options
Article
Publication date: 2 October 2017

Sushovan Chatterjee

The purpose of this study is analysis on fluid flow characteristics inside a modified designed spiral bubble column photo-bioreactor. Available fluid dynamic simulation of bubble…

228

Abstract

Purpose

The purpose of this study is analysis on fluid flow characteristics inside a modified designed spiral bubble column photo-bioreactor. Available fluid dynamic simulation of bubble column reactor (BCR) (which is well-known conventional photobioreactor) had shown significance contribution over the past two decades, where the fluid dynamics of the culture medium and mixing will influence the average irradiance and the light regimen to which the cells are exposed. This enhances the growth. To develop this, and also to cut down the cost parameter involving the production of biodiesel from algae, the growth rate of algae has to be enhanced.

Design/methodology/approach

Some design modification through a staggered spiral-path inside the bubble column design had been proposed and comparative simulation of the modified design has been reported. Three-dimensional simulations of gas–liquid flow both in the BCR and spiral path column reactor have been carried out using the Euler–Euler approach. Various graphs are plotted, and from comparing, it has been seen that the proposed reactor will enhance better mixing rate, which could help the growth rate in microalgae in the present proposed model. In this paper, an earnest attempt had made to carry out computational simulation of conventional BCR and designed reactor used for cultivation of microalgae which had analyzed using commercial code ANSYS 14.

Findings

From this work, it was observed that the average turbulence kinetic energy fluctuates more in designed reactor over the conventional photo bioreactor, which will in turn increase diffusivity and enhance transfer of mass, momentum and energy. The results provide comprehensive information concerning effect of fluid flow characteristics inside a modified designed spiral bubble-column photo-bioreactor.

Originality/value

Some of our earlier published results (www.scientific.net/AMM.592-594.2427) are also referred in this paper. This work had been performed under the financial aid from RPS project (no. 8,023/RID/RPS/27/11/12), sponsored by All India Council for Technical Education.

Details

World Journal of Engineering, vol. 14 no. 5
Type: Research Article
ISSN: 1708-5284

Keywords

Access Restricted. View access options
Article
Publication date: 19 October 2020

Paulo Fuchs, Carlos Raulino, Diogo Conceição, Samara Neiva, Wellyngton Silva de Amorim, Thiago Coelho Soares, Maurício Andrade de Lima, Carlos Rogerio Montenegro De Lima, João Coelho Soares and José Baltazar Salgueirinho Osório de Andrade Andrade Guerra

Sustainability is understood as a complex and integrating area, involving the most diverse areas and fields of knowledge. Because of the innumerable socio-environmental challenges…

2001

Abstract

Purpose

Sustainability is understood as a complex and integrating area, involving the most diverse areas and fields of knowledge. Because of the innumerable socio-environmental challenges in the current scenario, a sustainable development that finds the necessary changes and advances for communities, industry and the various stakeholders involved is required. In this process of promoting sustainable development, universities stand out for being institutions capable of taking an analytical and questioning look at the directions of the society in which they are inserted and not just helping them to pursue them, serving as a model and living laboratory for the implementation of greener practices in cities. One of the actions that contributes to the consolidation process of a more sustainable university and the development of the green campus is the use of green marketing, understood as a set of all the practices that involve conventional marketing, focused on the search to reduce the negative impact or promote positive effects on the relationship between the institution and the environment. This paper aims, based on the balanced scorecard (BSC), to propose a strategic management tool as support for green marketing strategies, thus promoting, more quickly, the promotion of sustainable development in higher education institutions (HEIs).

Design/methodology/approach

Four universities were chosen, from the literature, in terms of best practices for sustainable development, where the main dimensions used by green marketing were mapped. Based on them, the BSC structure was adapted to enhance its strategies.

Findings

To achieve the objective of this work, this paper proposed an adaptation of the original BSC for better management of green marketing strategies for universities, based on four dimensions: community members, university members, product and strategy.

Originality/value

The main contribution of this paper is to propose a BSC as a strategic management system focused on the green marketing of universities to accelerate the promotion of sustainable development in HEIs.

Details

International Journal of Sustainability in Higher Education, vol. 21 no. 7
Type: Research Article
ISSN: 1467-6370

Keywords

1 – 6 of 6
Per page
102050