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Article
Publication date: 29 December 2022

K.V. Sheelavathy and V. Udaya Rani

Internet of Things (IoT) is a network, which provides the connection with various physical objects such as smart machines, smart home appliance and so on. The physical objects are…

Abstract

Purpose

Internet of Things (IoT) is a network, which provides the connection with various physical objects such as smart machines, smart home appliance and so on. The physical objects are allocated with a unique internet address, namely, Internet Protocol, which is used to perform the data broadcasting with the external objects using the internet. The sudden increment in the number of attacks generated by intruders, causes security-related problems in IoT devices while performing the communication. The main purpose of this paper is to develop an effective attack detection to enhance the robustness against the attackers in IoT.

Design/methodology/approach

In this research, the lasso regression algorithm is proposed along with ensemble classifier for identifying the IoT attacks. The lasso algorithm is used for the process of feature selection that modeled fewer parameters for the sparse models. The type of regression is analyzed for showing higher levels when certain parts of model selection is needed for parameter elimination. The lasso regression obtains the subset for predictors to lower the prediction error with respect to the quantitative response variable. The lasso does not impose a constraint for modeling the parameters caused the coefficients with some variables shrink as zero. The selected features are classified by using an ensemble classifier, that is important for linear and nonlinear types of data in the dataset, and the models are combined for handling these data types.

Findings

The lasso regression with ensemble classifier–based attack classification comprises distributed denial-of-service and Mirai botnet attacks which achieved an improved accuracy of 99.981% than the conventional deep neural network (DNN) methods.

Originality/value

Here, an efficient lasso regression algorithm is developed for extracting the features to perform the network anomaly detection using ensemble classifier.

Details

International Journal of Pervasive Computing and Communications, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1742-7371

Keywords

Article
Publication date: 16 April 2020

Niranjan Devkota, Udaya Raj Paudel and Udbodh Bhandari

This paper explores entrepreneurs' expectation from the new provincial government to protect sociocultural values for promoting touristic city – Pokhara, Nepal.

Abstract

Purpose

This paper explores entrepreneurs' expectation from the new provincial government to protect sociocultural values for promoting touristic city – Pokhara, Nepal.

Design/methodology/approach

The purposive sampling technique was applied to source the information from the respondents resided at Pokhara. Structured questionnaire techniques and cross-sectional descriptive method were used to collect data from 393 tourism entrepreneurs to explore their understanding and existing situations.

Findings

About 85.5% of the respondents argue that the new government system has affected their business and 58.27% feel procedural complexities due to new political administrative system. Natural beauty, growing pollution, unmanaged urbanizations, good flow of the tourists and sustainability of the touristic city resulted as main aspects of Strength, Weakness, Opportunity and Threats. The entrepreneurs expect that newly formed provincial government should provide business security, formulate appropriate tax policy and provision for business insurance scheme for smooth operation, growth and sustainability of their tourism entrepreneurship.

Research limitations

The research was taken in Pokhara, only the entrepreneurs mostly resided at Lakeside were taken and wider research across the whole city would give a more balanced perspective.

Practical implication

Recommendations are made with the aim of uplifting entrepreneurship milieu in the touristic city Pokhara in order to promote tourism business of Pokhara.

Social implication

This research can help local authority to take local residents' and entrepreneurs' experience into consideration for creating better plan and policies for the well-being of Pokhara.

Originality/value

This is the first paper to provide data from the perspective of entrepreneurs' expectation from newly formed Gandaki provincial government in Pokhara, Nepal.

Details

Journal of Hospitality and Tourism Insights, vol. 3 no. 3
Type: Research Article
ISSN: 2514-9792

Keywords

Article
Publication date: 26 February 2024

Madhavarao Singuru, Kesava Rao V.V.S. and Rama Bhadri Raju Chekuri

This study aims to investigate the optimal process parameters of the wire-cut electrical discharge machining (WCEDM) for the machining of the GZR-AA7475 hybrid metal matrix…

Abstract

Purpose

This study aims to investigate the optimal process parameters of the wire-cut electrical discharge machining (WCEDM) for the machining of the GZR-AA7475 hybrid metal matrix composite (HMMC). HMMCs are prepared with 2 Wt.% graphite and 4 Wt.% zirconium dioxide reinforced with aluminium alloy 7475 (GZR-AA7475) composite by using the stir casting method. The objective is to enhance the mechanical properties of the material while preserving its unique features. WCEDM with a 0.18 mm molybdenum wire electrode is used for machining the composite.

Design/methodology/approach

To conduct experimental studies, a Taguchi L27 orthogonal array was adopted. Input variables such as peak current (Ip), pulse-on-time (TON) and flushing pressure (PF) were used. The effect of process parameters on the output responses, such as material removal rate (MRR), surface roughness rate (SRR) and wire wear ratio (WWR), were investigated. The grey relational analysis (GRA) is used to obtain the optimal combination of the process parameters. Analysis of variance (ANOVA) was also used to identify the significant process parameters affecting the output responses.

Findings

Results from the current study concluded that the optimal condition for grey relational grade is obtained at TON = 105 µs, Ip = 100 A and PF = 90 kg/cm2. Peak current is the most prominent parameter influencing the MRR, whereas SRR and WRR are highly influenced by flushing pressure.

Originality/value

Identifying the optimal process parameters in WCEDM for machining of GZR-AA7475 HMMC. ANOVA and GRA are used to obtain the optimal combination of the process parameters.

Details

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

Keywords

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