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Patient privacy in smart cities by blockchain technology and feature selection with Harris Hawks Optimization (HHO) algorithm and machine learning

Haedar Al-Safi | Jorge Munilla | Cevat Rahebi

A medical center in the smart cities of the future needs data security and confidentiality to treat patients accurately. One mechanism for sending medical data is to send information to other medical centers without preserving confidentiality. This method is not impressive because in treating people, the privacy of medical information is a principle. In the proposed framework, the opinion of experts from other medical centers for the treatment of patients is received and consider the best therapy. The proposed method has two layers. In the first layer, data transmission uses blockchain. In the ...Daha fazlası

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Predicting stock returns with financial ratios: A new methodology incorporating machine learning techniques to beat the market

Zeynep İltüzer

This study proposes a methodology incorporating machine learning algorithms to predict stock returns and construct portfolios that beat the market. The performance evaluation is based on the statistical metrics as well as the return and Sharpe ratios of the portfolios. Additionally, a new performance evaluation metric, Safe-Side, is introduced to address the needs of conservative portfolio managers and investors. The results provide strong evidence that the machine learning algorithms can be used to predict the stock returns with approximately 86 classification accuracy. The proposed methodolo ...Daha fazlası

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The impact of perceived education quality on tourism and hospitality students career choice: The mediating effects of academic self-efficacy

Derya Demirdelen Alrawadieh

Despite the importance of understanding tourism and hospitality (T&H) students' career choices for both high education institutions and industry practitioners, scarce empirical research exists which limits drawing reliable conclusions on the antecedents of T&H students' post graduate behavioral intentions. Drawing on data collected from 267 undergraduate T&H students in Turkey, the results show that perceived education quality is positively associated with T&H students' intention to join the industry but not to pursue a postgraduate degree. The findings also confirm the mediating role of acade ...Daha fazlası

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Inside out, exploring residential spaces during COVID-19 lockdown from the perspective of architecture students

Paria Valizadeh

The new preventative measures that have emerged from the Coronavirus crisis brought about changes in different aspects of daily life. Some of these changes may have a significant impact on how the built environment is being experienced. The current paper examines reconfigurations that happened in residential spaces and space allocations for transitioned activities in a small case study targeting a group of architecture students in Cyprus. Analysis and findings are structured in three sections, indoor activities, special organization, and quality of life. The result shows blurring boundaries be ...Daha fazlası

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Adapted-RRT: novel hybrid method to solve three-dimensional path planning problem using sampling and metaheuristic-based algorithms

Mohammed Ahmed Shah

Three-dimensional path planning for autonomous robots is a prevalent problem in mobile robotics. This paper presents three novel versions of a hybrid method designed to assist in planning such paths for these robots. In this paper, an improvement on Rapidly exploring Random Tree (RRT) algorithm, namely Adapted-RRT, is presented that uses three well-known metaheuristic algorithms, namely Grey Wolf Optimization (GWO), Incremental Grey Wolf Optimization (I-GWO), and Expanded Grey Wolf Optimization (Ex-GWO)). RRT variants, using these algorithms, are named Adapted-RRTGWO, Adapted-RRTI-GWO, and Ada ...Daha fazlası

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Is There Any Advantage of Machine Learning to Multivariate Regression Analysis for Predicting Disease-Related Deaths in Patients with Gastric Cancer? Reevaluation of Retrospective Data

Umut Kaya

OBJECTIVE The problem in gastric cancer patients is multifactorial and it is not possible to use one factor alone to predict disease survival. Machine learning (ML) algorithms have become popular in the medical field, recently. We aimed to evaluate the power of ML algorithms for predicting deaths due to gastric cancer. METHODS We reevaluated the retrospective data published. Seven different ML algorithms (logistic regression [LR], artificial neural networks/multilayer perceptron, gradient boosted trees, support vector machine, random forest, naive Bayes, and probabilistic neural network) tried ...Daha fazlası

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Paria Valizadeh

Modernization programs in Iran emerged with the 1963 White Revolution and transformed the socio-spatial organization of the capital city of Tehran. This modernization was associated with Westernization and led to uneven urban development, exacerbated class divisions and developed a kind of fetishism of urbanization in the Iranian society of 1970s. Modernizing the society in the image of the west and in particular the United States fascinated the upper classes since they could afford to live in the ways described in the media, and the more their fascination with the westernized way of living de ...Daha fazlası

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Effects of quercetin and catechin on blood lactate level

Meral Miyaç Göktepe

Study Objectives: This study was aimed to investigate the effects of combined administration of Catechin and Quercetin on blood lactate level. Methods: The research was conducted on 12 male Wistar rats weighing 300-350 gr. Rats were divided into two groups as the control group (n=6) and the test group (n=6). After the rats were quarantined for 10 days; each rat heart blood was taken on the first test day (pre catechin+quercetin supplementation), and again after they were participated to exercise on the second test day (pre catechin+quercetin supplementation). Between days 3 and 12 after testin ...Daha fazlası

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The sun is no fun without rain: Physical environments affect how we feel about yellow across 55 countries

Banu Manav

Across cultures, people associate colours with emotions. Here, we test the hypothesis that one driver of this cross-modal correspondence is the physical environment we live in. We focus on a prime example - the association of yellow with joy, - which conceivably arises because yellow is reminiscent of life-sustaining sunshine and pleasant weather. If so, this association should be especially strong in countries where sunny weather is a rare occurrence. We analysed yellow-joy associations of 6625 participants from 55 countries to investigate how yellow-joy associations varied geographically, cl ...Daha fazlası

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Additional Value of Using Satellite-Based Soil Moisture and Two Sources of Groundwater Data for Hydrological Model Calibration

Mehmet Cuneyd Demirel | Alparslan Ozen | Selen Orta | Emir Toker | Hatice Kubra Demir | Omer Ekmekcioglu | Sinan Erucar | Ahmet Bilal Sag | Omer Sari | Hayrettin Hanci | Hilal Erdem | Mehmet Melih Kosucu | Eyyup Ensar Basakin | Muhammet Bahattin Avcuoglu | Omer Vanli

Although the complexity of physically-based models continues to increase, they still need to be calibrated. In recent years, there has been an increasing interest in using new satellite technologies and products with high resolution in model evaluations and decision-making. The aim of this study is to investigate the value of different remote sensing products and groundwater level measurements in the temporal calibration of a well-known hydrologic model i.e., Hydrologiska Bryans Vattenbalansavdelning (HBV). This has rarely been done for conceptual models, as satellite data are often used in th ...Daha fazlası

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Does the group membership shape evaluations on other drivers? The role of symbolic cues in traffic

Burcu Tekes | Uygar Erkus | Timo Lajunen

The present study investigated the effects of group membership on drivers' evaluations of themselves and other drivers. An online survey was completed by 144 university students. As measurement, mini Driver Behavior Questionnaire (DBQ) with the addition of three aggressive violation items of the original DBQ the Positive Driver Behavior Scale, and an adjective list were used. Participants assessed their own driving behavior as well as three different driver identities represented by three sets of car photographs. In-group (the university) identity, out-group (politically provocative) identity ...Daha fazlası

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Banu Manav

In lighting design, the main concept is to achieve a healthy environment, which addresses energy efficiency, cost, maintenance, and quality. User-friendly lighting systems shall be adopted to architecture and interior architecture. User control over the lighting system is important, by dimming or increasing light output, by changing the colour of the light sets the inner atmosphere and affects user mood. Standards and codes on lighting shall also be evaluated by means of these topics. The paper aims to analyse how the luminous environment is affective on the perceived environment. Hence, a ser ...Daha fazlası

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