To assess the currency of descriptions found in SilverPlatter's Medline CDROM edition precisely, all the descriptions from 1993 were studied. The objectives were not only to…
Abstract
To assess the currency of descriptions found in SilverPlatter's Medline CDROM edition precisely, all the descriptions from 1993 were studied. The objectives were not only to quantify the mean currency of the articles, but also to establish whether the priority level, the periodicity and the subset had any influence on currency. As a secondary result, a database summarises characteristics and currency values for each serial The results show that the currency of a description can vary tremendously. Priority level, periodicity and prior database were found to have a low but highly significant influence on currency (p < 0.0001). The mean currency was 6.92 months, when Priority 1 journal articles had a mean currency of 4.53 months and appeared on CDROM two to three months earlier than other priority‐assigned journal articles. 40.28% of Priority 1 journals appeared on CDROM within three months of publication. The 10 most important serials (regarding ISI's impact factor for general medicine) are shown as examples of the database for secondary results.
The iconic vigilante Paul Kersey (Charles Bronson) returned to cinema screens via Death Wish 2 (Michael Winner) in 1982 and vigilantism would remain a key theme in American urban…
Abstract
The iconic vigilante Paul Kersey (Charles Bronson) returned to cinema screens via Death Wish 2 (Michael Winner) in 1982 and vigilantism would remain a key theme in American urban action films throughout the 1980s. Susan Jeffords subsequently argued that Hollywood's ‘hard bodied’ male action heroes of the period were reflective of the social and political thematics that distinguished Ronald Reagan's tenure as America's President (1994, p. 22). But while Jeffords' arguments are convincing, they overlook contemporaneous films featuring female and ‘soft’ bodied urban action heroes.
The Angel trilogy (Angel, 1984; Avenging Angel, 1985; and Angel III: The Final Chapter, 1988) features three such understudied examples. Indeed, the films' diverse and atypical range of action heroes demand that they are interrogated in terms of their protagonists' gender, sexual orientation, lifestyle choices and age. Featuring narratives about the prostitutes and street folk who frequent Los Angeles' Hollywood Boulevard, the films' key characters are a teenage prostitute and her guardians: a transvestite prostitute, a lesbian hotelier and an elderly cowboy. All three films feature narratives that revolve around acts of vengeance and vigilantism.
This chapter will critically discuss the striking ways in which the films' ‘soft’ bodied and atypical protagonists are presented as convincing action heroes who subvert contemporaneous ‘hard’ bodied norms. It will also consider to what extent their subversive rewriting of typical urban action film narratives and character relations might be understood to critique and deconstruct the themes and concerns that usually characterized such films during the Reagan era.
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The purpose of this paper is to assess the extent to which personal values affect entrepreneurial intentions and the extent to which this relationship depends on gender among the…
Abstract
Purpose
The purpose of this paper is to assess the extent to which personal values affect entrepreneurial intentions and the extent to which this relationship depends on gender among the millennial generation.
Design/methodology/approach
This relationship was examined using the list of values (LOV). Based on a sample of 600 respondents born between 1977 and 1994, a self-administered online questionnaire was conducted.
Findings
The partial least squares structural equation modeling (PLS-SEM) approach demonstrated that Generation Y members who give higher priority to self-direction, social affiliation and hedonic orientation values have greater entrepreneurial intentions. Across gender, the PLS-multigroup analysis (MGA) approach reveals that self-direction values enhance entrepreneurial intention for Generation Y females but not for males. Social affiliation values improve entrepreneurial intention for Generation Y males but not for females. Hedonic orientation values rise entrepreneurial intentions for both Generation Y males and females similarly. The findings give also a ranking of the nine LOV.
Research limitations/implications
Across-cultural comparisons are lacking in this research. This study only focuses on the value–intention relationship. Future research could study the value–attitude–behavior.
Practical implications
The results provide implications to all agents concerned by promoting new enterprises and feminine entrepreneurship regarding the implementation of personal values in fostering the venture creation process and stimulation of people to become business owners.
Originality/value
Little is known about the role of personal values in venture creation. The findings provide support for the role personal values play in building entrepreneurial intentions. The focus here was on Generation Y. The generation that faces problems of unemployment, job loss and poverty specifically in the time of crises of the COVID-19 pandemic. The value-based entrepreneurship approach is a proliferating field of research as the world seeks to rebuild economies.
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Sneha Patil, Mahesh Goudar and Ravindra Kharadkar
For decades, continuous research work is going on to maximize the power harvested from the sun; however, there is only a limited analysis on exploiting the microwatt output power…
Abstract
Purpose
For decades, continuous research work is going on to maximize the power harvested from the sun; however, there is only a limited analysis on exploiting the microwatt output power from indoor lightings. Microelectronic system has power demand in the µW range, and therefore, indoor photovoltaics would be appropriate for micro-energy harvesting appliances. “Energy harvesting is defined as the transfer process by which energy source is acquired from the ambient energy, stored in energy storage element and powered to the target systems”. The theory of energy harvesting is: gathering energy from surroundings and offering technological solutions such as solar energy harvesting, wind energy collection and vibration energy harvesting. “The solar cell or photovoltaic cell (PV), is a device that converts light into electric current using the photoelectric effect”. Factors such as light source, temperature, circuit connection, light intensity, angle and height can manipulate the functions of PV cells. Among these, the most noticeable factor is the light intensity that has a major impact on the operations of solar panels.
Design/methodology/approach
This paper aims to design an enhanced prediction model on illuminance or irradiance by an optimized artificial neural network (ANN). The input attributes or the features considered here are temperatures, maxim, TSL, VI, short circuit current, open-circuit voltage, maximum power point (MPP) voltage, MPP current and MPP power, respectively. To enhance the performance of the prediction model, the weights of ANN are optimally tuned by a new self-improved brain storm optimization (SI-BSO) model.
Findings
The superiority of the implemented work is compared and proved over the conventional models in terms of error analysis and prediction analysis. Accordingly, the presented approach was analysed and its superiority was proved over other conventional schemes such as ANN, ANN-Levenberg–Marquardt (LM), adaptive-network-based fuzzy inference system (ANFIS) and brainstorm optimization (BSO). In addition, analysis was held with respect to error measures such as mean absolute relative error (MARE), mean square root error (MSRE), mean absolute error and mean absolute percentage error. Moreover, prediction analysis was also performed that revealed the betterment of the presented model. More particularly, the proposed ANN + SI-BSO model has attained minimal error for all measures when compared to the existing schemes. More particularly, on considering the MARE, the adopted model for data set 1 was 23.61%, 48.12%, 79.39% and 90.86% better than ANN, ANN-LM, ANFIS and BSO models, respectively. Similarly, on considering data set 2, the MSRE of the implemented model was 99.87%, 70.69%, 99.57% and 94.74% better than ANN, ANN-LM, ANFIS and BSO models, respectively. Thus, the enhancement of the presented ANN + SI-BSO scheme has been validated effectively.
Originality/value
This work has established an improved illuminance/irradiance prediction model using the optimization concept. Here, the attributes, namely, temperature, maxim, TSL, VI, Isc, Voc, Vmpp, Impp and Pmpp were given as input to ANN, in which the weights were chosen optimally. For the optimal selection of weights, a novel ANN + SI-BSO model was established, which was an improved version of the BSO model.
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A. Kullaya Swamy and Sarojamma B.
Data mining plays a major role in forecasting the open price details of the stock market. However, it fails to address the dimensionality and expectancy of a naive investor…
Abstract
Purpose
Data mining plays a major role in forecasting the open price details of the stock market. However, it fails to address the dimensionality and expectancy of a naive investor. Hence, this paper aims to study a future prediction model named time series model is implemented.
Design/methodology/approach
In this model, the stock market data are fed to the proposed deep neural networks (DBN), and the number of hidden neurons is optimized by the modified JAYA Algorithm (JA), based on the fitness function. Hence, the algorithm is termed as fitness-oriented JA (FJA), and the proposed model is termed as FJA-DBN. The primary objective of this open price forecasting model is the minimization of the error function between the modeled and actual output.
Findings
The performance analysis demonstrates that the deviation of FJA–DBN in predicting the open price details of the Tata Motors, Reliance Power and Infosys data shows better performance in terms of mean error percentage, symmetric mean absolute percentage error, mean absolute scaled error, mean absolute error, root mean square error, L1-norm, L2-Norm and Infinity-Norm (least infinity error).
Research limitations/implications
The proposed model can be used to forecast the open price details.
Practical implications
The investors are constantly reviewing past pricing history and using it to influence their future investment decisions. There are some basic assumptions used in this analysis, first being that everything significant about a company is already priced into the stock, other being that the price moves in trends
Originality/value
This paper presents a technique for time series modeling using JA. This is the first work that uses FJA-based optimization for stock market open price prediction.
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Berhanu Tolosa Garedew, Daniel Kitaw Azene, Kassu Jilcha and Sisay Sirgu Betizazu
The study presented healthcare service quality, lean thinking and Six Sigma to enhance patient satisfaction. Moreover, the notion of machine learning is combined with lean service…
Abstract
Purpose
The study presented healthcare service quality, lean thinking and Six Sigma to enhance patient satisfaction. Moreover, the notion of machine learning is combined with lean service quality to bring about the fundamental benefits of predicting patient waiting time and non-value-added activities to enhance patient satisfaction.
Design/methodology/approach
The study applied the define, measure, analyze, improve and control (DMAIC) method. In the define phase, patient expectation and perception were collected to measure service quality gaps, whereas in the measure phase, quality function deployment (QFD) was employed to measure the high-weighted score from the patient's voice. The root causes of the high weighted score were identified using a cause-and-effect diagram in the analysis phase.
Findings
The study employed a random forest, neural network and support vector machine to predict the healthcare patient waiting time to enhance patient satisfaction. Performance comparison metrics such as root-mean-square error (RMSE), mean absolute error (MAE) and R2 were accessed to identify the predictive model accuracy. From the three models, the prediction performance accuracy of the support vector machine model is better than that of the neural network and random forest models to predict the actual data.
Practical implications
Lean service quality improvement using DMAIC, QFD and machine learning techniques can be generalized to predict patient waiting times. This study provides better realistic insights into patient expectations by announcing waiting times to enable data-driven service quality deliveries.
Originality/value
Prior studies lack lean service quality, Six Sigma and waiting time prediction to reduce healthcare waste. This study proposes lean service quality improvement through lean Six Sigma (LSS), i.e. DMAIC and machine learning techniques, along with QFD and cause-and-effect diagram.
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Aneel Manan, Pu Zhang, Shoaib Ahmad and Jawad Ahmad
The purpose of this study is to assess the incorporation of fiber reinforced polymer (FRP) bars in concrete as a reinforcement enhances the corrosion resistance in a concrete…
Abstract
Purpose
The purpose of this study is to assess the incorporation of fiber reinforced polymer (FRP) bars in concrete as a reinforcement enhances the corrosion resistance in a concrete structure. However, FRP bars are not practically used due to a lack of standard codes. Various codes, including ACI-440-17 and CSA S806-12, have been established to provide guidelines for the incorporation of FRP bars in concrete as reinforcement. The application of these codes may result in over-reinforcement. Therefore, this research presents the use of a machine learning approach to predict the accurate flexural strength of the FRP beams with the use of 408 experimental results.
Design/methodology/approach
In this research, the input parameters are the width of the beam, effective depth of the beam, concrete compressive strength, FRP bar elastic modulus and FRP bar tensile strength. Three machine learning algorithms, namely, gene expression programming, multi-expression programming and artificial neural networks, are developed. The accuracy of the developed models was judged by R2, root means squared and mean absolute error. Finally, the study conducts prismatic analysis by considering different parameters. including depth and percentage of bottom reinforcement.
Findings
The artificial neural networks model result is the most accurate prediction (99%), with the lowest root mean squared error (2.66) and lowest mean absolute error (1.38). In addition, the result of SHapley Additive exPlanation analysis depicts that the effective depth and percentage of bottom reinforcement are the most influential parameters of FRP bars reinforced concrete beam. Therefore, the findings recommend that special attention should be given to the effective depth and percentage of bottom reinforcement.
Originality/value
Previous studies revealed that the flexural strength of concrete beams reinforced with FRP bars is significantly influenced by factors such as beam width, effective depth, concrete compressive strength, FRP bars’ elastic modulus and FRP bar tensile strength. Therefore, a substantial database comprising 408 experimental results considered for these parameters was compiled, and a simple and reliable model was proposed. The model developed in this research was compared with traditional codes, and it can be noted that the model developed in this study is much more accurate than the traditional codes.
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Samrakshya Karki and Bonaventura Hadikusumo
Project manager’s competency is crucial in the construction sector for the successful completion of projects, particularly in the case of developing countries like Nepal…
Abstract
Purpose
Project manager’s competency is crucial in the construction sector for the successful completion of projects, particularly in the case of developing countries like Nepal. Therefore, it is very essential to select competent project managers by finding the competency factors required by them. Hence, this study aims to identify the characteristics of competent project managers by expert opinion method and to evaluate their competency level by a questionnaire survey to develop a prediction model using a supervised machine learning approach via Waikato Environment for Knowledge Analysis (WEKA), a machine learning tool which predicts Project manager’s performance as “Higher than expected,” “Expected” or “Lower than expected” for the medium complexity construction projects of Nepal (from US$200,000 up to US$10M).
Design/methodology/approach
The data collection procedure for this research is based on an expert opinion method and survey. Expert opinion method is conducted to find the characteristics of a competent project manager by validating the top 15 competency factors based on literature review. The survey is conducted with the top management to assess their project manager’s competency level. Both qualitative and quantitative approaches are used to collect data for classification and prediction in WEKA, a machine learning tool.
Findings
The results illustrate that the project managers in Nepal have a high score in leadership skills, personal characteristics, team development and delegation, communication skills, technical skills, problem-solving/coping with situation skills and stakeholder/relationship management skills. Furthermore, among the seven classifiers (naïve Bayes, sequential minimal optimization [SMO], multilayer perceptron, logistic, KStar, J48 and random forest), the accuracy given by the SMO algorithm is highest of all in both the percentage split and k-folds cross validation method. The model developed using SMO classifier by k-folds cross-validation (k = 10) is acknowledged as a final model.
Research limitations/implications
This research focuses to develop a prediction model to predict and analyze the competency of project managers by applying a supervised machine learning approach. Seven extensively used algorithms (Naïve Bayes, SMO, multilayer perceptron, logistic, KStar, J48, random forest) are used to check the accuracy of models and an algorithm that gives the highest accuracy is adopted. Data collection for this research is carried out by expert opinion method to validate the characteristics (factors) essential for competent project managers in the first round and the description of each factor as high, medium and low is inquired with the same experts in the second round. After an expert opinion, a structured questionnaire is prepared for the survey to assess the competency level of project managers (PMs). The competency level of PMs working under government funded, foreign aided or private projects from the contractor’s side is measured. This research is limited to the medium scale construction projects of Nepal.
Practical implications
This model can be a huge asset in the human resource department of construction companies as it helps to know the performance level of project managers in terms of “Higher than expected,” “Expected” or “Lower than expected” for the medium complexity construction projects of Nepal. Also, the model will assist human intelligence to make the decision while recruiting a new project manager/s for different types of projects at a time. Moreover, the model can be used for self-assessment of project manager/s to know their performance level. The model can be used to develop a user friendly interface system or an application such that it can be conveniently used anywhere any time.
Social implications
This research shows that most of the project managers working in a medium complexity construction project of Nepal are male, maximum of them hold bachelor’s degree and study for road projects. Furthermore, most of the project managers scored high in leadership skills, personal characteristics, communication skills, technical skills, problem-solving/coping with situation skills, team development and delegation and stakeholder/relationship management skills. The model has given the “Personal characteristics” attribute the highest weightage. Likewise, other attributes having high weightage are communication skills, analytical abilities, project budget, stakeholder/relationship management, team development and delegation and time management skills.
Originality/value
This research was conducted to find the competency factors and to study the competency level of project managers in Nepal to develop a prediction model to predict the PM’s performance using a machine learning approach in medium scale construction projects. There is a lack of research to develop a model that predicts project manager’s competency using the machine learning approach. Therefore, the predictive model developed here helps in the identification of a competent project manager as it will be advantageous for project completion with a high success rate.
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The chapter looks for the conditions of a contribution of microcredit to poverty alleviation.
Abstract
Purpose
The chapter looks for the conditions of a contribution of microcredit to poverty alleviation.
Methodology/approach
It uses socioeconomical hypotheses for defining a direct and fast positive effect of microcredit on the income of the poorest. The contribution raises ten issues or conditions at a micro, meso and macro level.
Findings
It is not often that these ten conditions are all completely met. So, the impact of microcredit is generally low as regards the alleviation of poverty. The problems to achieve them are linked to the specificities of the clients and of the prevailing institutions in various sub-Saharan Africa countries.
Originality/value
The chapter clearly identifies the limits of microcredit and their reasons.