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Article
Publication date: 1 March 1990

James T. Luxhoj and Gene A. Giacomelli

The development of labour standards for the single truss tomatoproduction system is examined. Both time study and predetermined timesystems, such as the Element Times for…

171

Abstract

The development of labour standards for the single truss tomato production system is examined. Both time study and predetermined time systems, such as the Element Times for Agriculture (ETA) tables and the Maynard Operation Sequence Technique (MOST) tables, are used to determine labour standards for the operations of pruning and harvesting in a single truss tomato production system. The hypothesis is that a predetermined time system could be used to establish greenhouse labour standards, and thus replace the tedious and costly process of direct time study. Such a work measurement system would enable the setting of job standards quickly and accurately. Standardised work models will facilitate cost control of labour operations, and provide data for evaluation of labour costs within future greenhouse system designs. The data indicate that, although the pre‐determined time values varied from measured time study by around 6 per cent to over 23 per cent for pruning, the variation for harvesting ranged approximately from 3 per cent to 7 per cent. The combined results suggest that predetermined time systems can be used effectively to establish greenhouse labour standards for short cycle tasks without the loss of significant accuracy when using an absolute scale.

Details

International Journal of Operations & Production Management, vol. 10 no. 3
Type: Research Article
ISSN: 0144-3577

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Article
Publication date: 2 February 2022

Mehran Nouri, Sara Sohaei, Mohammed Nader Shalaby, Sanaz Mehrabani, Atena Ramezani and Shiva Faghih

This paper aims to assess the impact of curcumin supplementation body mass index and glycemic indices in women with polycystic ovary syndrome (PCOS).

166

Abstract

Purpose

This paper aims to assess the impact of curcumin supplementation body mass index and glycemic indices in women with polycystic ovary syndrome (PCOS).

Design/methodology/approach

A systematic search of the literature was conducted in PubMed, Scopus and ISI web of science to identify all randomized controlled trials (RCTs) published from the earliest record up to February 2021. The authors used a random-effects model to estimate pooled effect sizes.

Findings

A total of four potentially related clinical trials met the inclusion criteria which included a total of 198 participants. Random-effects meta-analysis showed significant effects of curcumin on fasting blood sugar (FBS) (−3.62 mg/dl, 95% CI [−5.65, −1.58], p-value < 0.001, I2 = 0.0%), insulin level (−1.67 µU/mL, 95% CI [−3.06, −0.28], p-value = 0.018, I2 = 0.0%) and homeostasis model of assessment insulin resistance (HOMA-IR) (−0.42, 95% CI [−0.76, −0.09], p-value < 0.01, I2 = 0.0%). No evidence of publication bias was discovered in the meta-analyses.

Originality/value

Present systematic review and meta-analysis of RCTs showed beneficial effects of curcumin consumption on FBS, insulin level and HOMA-IR in patients with PCOS. However, further large-scale studies are needed to confirm these results.

Details

Nutrition & Food Science , vol. 52 no. 7
Type: Research Article
ISSN: 0034-6659

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Available. Open Access. Open Access
Article
Publication date: 22 March 2021

Batuhan Bakırarar, Cemil Yüksel and Yasemin Yavuz

The study aimed to evaluate the effectiveness of using large data sets for new diabetes patient prescriptions.

1078

Abstract

Purpose

The study aimed to evaluate the effectiveness of using large data sets for new diabetes patient prescriptions.

Design/methodology/approach

This study consisted of 101,766 individuals, who had applied to the hospital with a diabetes diagnosis and were hospitalized for 1–14 days and subjected to laboratory tests and medication.

Findings

With the help of Mahout and Scala, data mining methods of random forest and multilayer perceptron were used. Accuracy rates of these methods were found to be 0.879 and 0.849 for Mahout and 0.849 and 0.870 for Scala.

Originality/value

The mahout random forest method provided a better prediction of new prescription requirements than the other methods according to accuracy criteria.

Details

Journal of Health Research, vol. 36 no. 2
Type: Research Article
ISSN: 0857-4421

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Article
Publication date: 12 September 2016

Chenin Treftz and Stanley T. Omaye

The purpose of this review of the literature is to provide readers a foundation of understanding whereby future research can move forward in the quest for global sustainable food…

4482

Abstract

Purpose

The purpose of this review of the literature is to provide readers a foundation of understanding whereby future research can move forward in the quest for global sustainable food production.

Design/methodology/approach

This review includes up-to-date information from evidence-based sources on hydroponics. Topics included are advantages, limitations, nutritional quality and sensory quality

Findings

Hydroponic growing systems offer the opportunity to at least augment traditional soil-based growing systems in global food production. Some benefits of hydroponic growing systems are limitation of water waste (recirculation), crops grown in controlled environments (control of pests, nutrients and attributes required for optimal plant growth) and ability to manipulate conditions to maximize production in limited space (vertical gardens).

Practical implications

The human population is increasing with a parallel increase in the demand for food; therefore, food production must increase to meet the need.

Originality/value

In spite of the rapid interest and proliferation of information by laypeople, evidence-based research is scant on hydroponics. This article provides a summary of the literature on hydroponics and how it may be used for sustainable food production in arid and urban areas.

Details

Nutrition & Food Science, vol. 46 no. 5
Type: Research Article
ISSN: 0034-6659

Keywords

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