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Automated Information Retrieval: Theory and Methods
Type: Book
ISBN: 978-0-12266-170-9

Content available
Article
Publication date: 1 August 2004

123

Abstract

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Aircraft Engineering and Aerospace Technology, vol. 76 no. 4
Type: Research Article
ISSN: 0002-2667

Abstract

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Panel Data Econometrics Theoretical Contributions and Empirical Applications
Type: Book
ISBN: 978-1-84950-836-0

Book part
Publication date: 15 December 2004

John Creedy, Guyonne Kalb and Rosanna Scutella

Recent studies have examined tax policy issues using labour supply models characterised by a discretised budget set. Microsimulation modelling using a discrete hours…

Abstract

Recent studies have examined tax policy issues using labour supply models characterised by a discretised budget set. Microsimulation modelling using a discrete hours approach is probabilistic. This makes analysis of the distribution of income difficult as even for a small sample with a modest range of labour supply points the range of possible labour supply combinations over the sample is extremely large. This paper proposes a method of approximating measures of income distribution and compares the performance of this method to alternative approaches in a microsimulation context. In this approach a pseudo income distribution is constructed, which uses the probability of a particular labour supply value occurring (standardised by the population size) to refer to a particular position in the pseudo income distribution. This approach is compared to using an expected income level for each individual and to a simulated approach, in which labour supply values are drawn from each individual’s hours distribution and summary statistics of the distribution of income are calculated by taking the average over each set of draws. The paper shows that the outcomes of various distributional measures using the pseudo method converge quickly to their true values as the sample size increases. The expected income approach results in a less accurate approximation. To illustrate the method, we simulate the distributional implications of a tax reform using the Melbourne Institute Tax and Transfer Simulator.

Details

Studies on Economic Well-Being: Essays in the Honor of John P. Formby
Type: Book
ISBN: 978-0-76231-136-1

Article
Publication date: 10 May 2022

Sadegh Jafarnejad, Catherine Tsang and Negin Amin

This paper aims to investigate the effect of L-citrulline supplementation on blood pressure (BP) in middle-aged and elderly populations.

Abstract

Purpose

This paper aims to investigate the effect of L-citrulline supplementation on blood pressure (BP) in middle-aged and elderly populations.

Design/methodology/approach

Three electronic databases, namely, Google Scholar, PubMed and Scopus, were searched from 1990 to November 2020. Random effects model analysis was applied for quantitative data synthesis, and 6 trials with 150 participants were identified and included in the analysis.

Findings

Results showed an overall non-significant effect of L-citrulline supplementation on both systolic BP (SBP) and diastolic BP (DBP) in middle-aged and elderly participants. However, stratified analysis indicated a significant reduction in SBP (SMD: −0.41, 95% CI: −0.84, 0.02; p = 0.06, heterogeneity p = 0.41; I2 = 10%) but not in DBP (SMD:−0.15, 95% CI: −0.57, 0.28; p = 0.51, heterogeneity p = 0.60; I2 = 0%), following longer-term (= 8 weeks) supplementation of L-citrulline. Additionally, higher doses of L-citrulline (= 6 grams) showed a marginally significant reduction in DBP (SMD: −0.38, 95% CI: −0.78, 0.02; p = 0.06, heterogeneity p = 0.50; I2 = 0%).

Originality/value

In conclusion, a higher dosage and longer duration of supplementation with L-citrulline may have potential BP lowering effects in populations at an increased risk of hypertension

Details

Nutrition & Food Science , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0034-6659

Keywords

Content available
167

Abstract

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Assembly Automation, vol. 18 no. 2
Type: Research Article
ISSN: 0144-5154

Keywords

Article
Publication date: 1 June 2004

Corey Keith

This paper describes the MARCXML architecture implemented at the Library of Congress. It gives an overview of the component pieces of the architecture, including the…

2648

Abstract

This paper describes the MARCXML architecture implemented at the Library of Congress. It gives an overview of the component pieces of the architecture, including the MARCXML schema and the MARCXML toolkit, while giving a brief tutorial on their use. Several different applications of the architecture and tools are discussed to illustrate the features of the toolkit being developed thus far. Nearly any metadata format can take advantage of the features of the toolkit, and the process of the toolkit enabling a new format is discussed. Finally, this paper intends to foster new ideas with regards to the transformation of descriptive metadata, especially using XML tools. In this paper the following conventions will be used: MARC21 will refer to MARC 21 records in the ISO 2709 record structure used today; MARCXML will refer to MARC 21 records in an XML structure.

Details

Library Hi Tech, vol. 22 no. 2
Type: Research Article
ISSN: 0737-8831

Keywords

Article
Publication date: 1 August 2000

Bert J. Dempsey

Every user of the World Wide Web understands why the WWW is often ridiculed as the World Wide Wait. The WWW and other applications on the Internet have been developed with…

Abstract

Every user of the World Wide Web understands why the WWW is often ridiculed as the World Wide Wait. The WWW and other applications on the Internet have been developed with a client‐server orientation that, in its simplest form, involves a centralized information repository to which users (clients) send requests. This single‐server model suffers from performance problems when clients are too numerous, when clients are physically far away in the Network, when the materials being delivered become very large and hence stress the wide‐area bandwidth, and when the information has a real‐time delivery component as with streaming audio and video materials. Engineering information delivery solutions that break the single‐site model has become an important aspect of next‐generation WWW delivery systems. Intends to help the information professional understand what new directions the delivery infrastructure of the WWW is taking and why these technical changes will impact users around the globe, especially in bandwidth‐poor areas of the Internet.

Details

The Electronic Library, vol. 18 no. 4
Type: Research Article
ISSN: 0264-0473

Keywords

Book part
Publication date: 16 October 2020

Ângela Gonçalves, Dina Pereira, João Leitão and Maria del Mar Fuentes

This chapter uses an intellectual capital (IC) qualitative approach for assessing the bio health technologies entrepreneurial ecosystem of a university located in Southern…

Abstract

This chapter uses an intellectual capital (IC) qualitative approach for assessing the bio health technologies entrepreneurial ecosystem of a university located in Southern Europe, aiming to identify the role played by IC in fostering the sustainable success of the entrepreneurial ecosystem. There has been limited research dedicated to deepening the knowledge of the entrepreneurial ecosystems’ dimensions, using an IC lens, in the context of university cities with different dimensions. Small cities may not have some dimensions, so developed, comparing with the ones of the ecosystems of large urban centers. This chapter uses a qualitative approach funded in a case study exploring internal and external stakeholders of a Portuguese entrepreneurial ecosystem, UBImedical, targeted at the bio health sector. The study is part of an exploratory study funded in the scope of a European Project, aiming to explore in a pioneering way the application of the dominant triad of capitals forming IC and, thus, identifying and understanding the dimensions of different entrepreneurial ecosystems. The case study reveals that the IC’s dimensions more critical for the success of the bio health entrepreneurial ecosystems are the structural capital and the relational capital, although human capital is perceived as a basic prerequisite for fostering the entrepreneurial ecosystem’s performance. The results are funded in primary and qualitative data collected from the interviews developed to previously identified external and internal stakeholders of this type of entrepreneurial ecosystem under study.

Details

A Guide to Planning and Managing Open Innovative Ecosystems
Type: Book
ISBN: 978-1-78973-409-6

Keywords

Article
Publication date: 20 May 2021

Zahra Mosallanezhad, Cain Clark, Fatemeh Bahreini, Zahra Motamed, Abdolhamid Mosallanezhad, Seyedeh Fatemeh Hosseini, Aneseh Shaban-Khalaf and Zahra Sohrabi

The purpose of this systematic review and meta-analysis was to investigate the efficacy of propolis on glycemic indices in type 2 diabetic patients.

Abstract

Purpose

The purpose of this systematic review and meta-analysis was to investigate the efficacy of propolis on glycemic indices in type 2 diabetic patients.

Design/methodology/approach

Web of science (ISI), Embase, Scopus and PubMed were systematically searched to find randomized controlled trials (RCTs) assessing the effects of propolis intake on glycemic controls in type 2 diabetic patients, from inception up to September 1, 2020. A random-effects model was used to pool weighted mean difference (WMD). Meta-regression was performed to detect the potential sources of inter-study heterogeneity.

Findings

Seven trials were included in the meta-analysis. Compared to controls, propolis intake significantly improved serum fasting blood sugar (FBS) (WMD = −13.62 mg/dl, 95% CI = [−23.04, −4.20], P = 0.005, I2 = 58.5%) and hemoglobin A1C (HbA1c) (WMD = −0.52%, 95% CI = [−0.86, −0.18], P = 0.002, I2 = 64.0%). In contrast, receiving propolis did not change serum insulin (WMD = −1.46 (uIU/ml), 95% CI = [−2.94, 0.02], P = 0.05, I2 = 75.0%) and homeostatic model assessment for insulin resistance (HOMA-IR) (WMD = −0.98 (%), 95% CI = [−2.00, 0.04], P = 0.06, I2 = 82.3%) compared to controls.

Originality/value

The present meta-analysis demonstrated that propolis intake significantly reduces serum FBS and HbA1c in diabetic patients but does not alter serum insulin and HOMA-IR. Further large-scale RCT’s are needed to approve these effects.

Details

Nutrition & Food Science , vol. 51 no. 7
Type: Research Article
ISSN: 0034-6659

Keywords

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