Diagnosis for Slight Bearing Fault in Induction Motor Based on Combination of Selective Features and Machine Learning

Induction motors are widely used in industry and are essential to industrial processes. The faults in motors lead to high repair costs and cause financial losses resulting from unexpected downtime. Early detection of faults in induction motors has become necessary and critical in reducing costs. Most motor faults are caused by bearing failure. Machine learning-based diagnostic methods are proposed in this study. These methods use effective features. First, load currents of healthy and faulty motors are measured while the rotating speed is changing continuously. Second, experiments revealed the relationship between the magnitude of the amplitude of specific signals and the rotating speed, and the rotating speed is treated as a new feature. Third, machine learning-based diagnoses are conducted. Finally, the effectiveness of machine learning-based diagnostic methods is verified using experimental data.

Surviving Senior Psychopathy: Informant Reports of Deceit and Antisocial Behavior in Multiple Types of Relationships

A prevailing view among researchers and mental health clinicians is that symptoms of antisocial personality disorder (ASPD)/psychopathy decrease as affected individuals reach middle age. In the current investigation, informants were surveyed about the behavior of individuals who they believed showed traits of ASPD/psychopathy and were over the age of 50. A final sample of 1,215 respondents rated the index individuals according to the ASPD/psychopathy traits derived from the pre-publication first draft of the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition, revealing high endorsement of traits associated with ASPD. Survey respondents reported their observations that individuals who met a threshold for putative ASPD/psychopathy continued to engage in antisocial behavior after age 50, and as a result the respondents endured significant harm, including material losses, financial losses, and various self-reported mental health problems. Those who knew the index individuals both before and after the age of 50 were specifically asked whether there was a change in the individual’s engagement in manipulation, deceit, and antisocial behavior; 93% of respondents reported that the behavior was just as bad or worse after age 50. Other researchers have suggested that the DSM diagnostic criteria do not accurately describe ASPD/psychopathy symptoms and behavior in older adults, and that the disorder remains stable, but its manifestation changes with age. This study supports those conclusions.

Developing Crisis Management System for Construction Projects in Iraq

Construction is a complicated process that takes place in an almost uncontrollable environment. Although projects can be carefully planned in advance in principle, there is a chance that unforeseen events and crises can disrupt these plans, affecting project development. Because the initial investment expenditures in construction projects are so large, they may be quickly influenced by crises, resulting in significant financial losses. The 2014 financial crisis was one of the most prominent crises that Iraq faced, which significantly impacted various activities in general and the construction industry in particular. Despite the importance of crisis management systems, the researchers found a great lack of local studies looking at crisis management, specifically in the basic stages chosen for its development, which are before, during, and after a crisis. Therefore, an effective crisis management system has been developed consisting of 20 critical success factors with devising 59 actions that can be taken for each proposed criterion for each of the three stages of crisis.

Legal implications of the criminal policy of returning state financial losses by corporations in corruption criminal acts to restore state financial losses

The criminal policy of returning state financial losses to corporations as perpetrators of corruption in state financial losses is regulated as additional criminal sanctions in the form of confiscation of goods and payment of replacement money in Article 18 paragraph (1) letter a and letter b of Law Number 31 of 1999 as amended by Law Number 20 of 2001 concerning the Eradication of Corruption Crimes. The purpose of this study is to find out how the legal implications of the criminal policy of returning state financial losses by corporations as perpetrators of criminal acts of corruption are. This research includes normative legal research with several approaches, namely; Historical approach, statutory approach, case approach, and conceptual approach. The results of this study show that the existing criminal policy for recovering state financial losses still has various legal implications which result in non-optimal efforts to recover state financial losses due to corruption in state financial losses committed by corporations.

Jaka będzie prasa po pandemii? Próba diagnozy wstępnej (stan na styczeń 2021)

The aim of the article is an attempt to estimate the changes that took place in the press in the last year, directly or indirectly related to the coronavirus pandemic. Some publishers experienced its effects painfully, losing readership and advertiser clients, which caused financial losses that are difficult to counteract. Hence the decisions to close press titles, suspend or abandon the printed version to the electronic version. In the latter case, we will have to wait for the gains to offset the losses. But digital editions are gaining in importance. The information provided before the end of 2020 by the press giant – the New York Times – about generating more revenues from sales of digital editions than from printed ones (sic!), should encourage publishers to develop this form of sales. This is a historic moment for the world press. The abandonment of printing press, announced years ago, may now accelerate even more. Not because of a pandemic anymore, but because electronic newspapers may generate higher revenues than traditional ones. Thus, the last arguments for staying in print may lose their raison d’être.

Prediction of Material Failure Time for a Bucket Wheel Excavator Boom Using Computer Simulation

Breakdown of stackers and excavators in opencast mines is possible because of operating, manufacturing and structural causes, and it produces high financial losses. These can be prevented by using various measures, including analyses and strength tests, with computerized modeling and simulation using FEA or other techniques being implemented in the recent years. In this paper a fatigue study is conducted on the boom of a BWE. Based on a computer model of the boom previously developed in SOLIDWORKS by our author team, first the modal analysis is conducted for three positions of the boom by studying the frequency response during the excavation process. This is followed by the time response determination corresponding to the maximum displacement frequency, in order to assess the stress during the excavation process, which causes the material fatigue in the boom structure. It was found that the maximum displacements appear when the BWE boom operates in a horizontal position. The aim was to estimate the period of time to failure in order to prevent unwanted accidents, and to develop a method that is applicable to any surface mining or industrial machine with similar structure.

IDENTIFYING AND SCHEDULING DDOS-APPLICATION LAYER ATTACKS IN MARINE, OIL & GAS EXPLORATION ASSETS ON-BOARD SYSTEMS LIKE PMS, SENSOR BASED DATA SYSTEMS

For the cost effective & safe operation of ships and other marine assets it is mandatory to develop software solution tool which helps in timely maintenance with priority based to avoid both financial losses and operational downtime. Our idea is to propose concept to develop combined protection mechanisms system for Planned Maintenance system. The research is IDENTIFYING AND SCHEDULING DDOS-APPLICATION LAYER ATTACKS on onboard systems. Countering Distributed Denial of Service (DDOS) attacks are becoming ever more challenging with the vast resources and techniques increasingly available to attackers. In this paper, we consider sophisticated attacks that are protocol- compliant, non-intrusive, utilize legitimate. Application-layer requests to overwhelm system resources. We characterize application layer resource attacks on the basis of the application workload parameters that they exploit. Request flooding, asymmetric, repeated one-shot. To protect marine software-based servers from these attacks, we propose a counter-mechanism that consists of a suspicion assignment mechanism and a DDOS-resilient scheduler, DDOS Shield. In contrast to prior work, our suspicion mechanism assigns a continuous value as opposed to a binary measure to each client session, and the scheduler utilizes these values to determine if and when to schedule a session’s requests. This will be done through an integrated working of PMS and Inventory. PMS and Inventory, while performing definite tasks independently, will seamlessly integrate with each other. Further the installations will reside in the vessel, office and other office nodes, where information can be viewed and updated depending on your network of vessels. In office, the Inventory-PMS package will function in a client –server mode and in a single terminal on the ship with LAN for the purpose of accessing Internet. All the database updating and back-up maintenance shall be shown into the system to enable the user to do the database management without incurring exorbitant annual maintenance bills, which normally comes with all similar systems in the market.

Gender Differences in Individual Dishonesty Profiles

Dishonesty has an enormous impact on all aspects of our society. It causes huge financial losses annually, so efforts to understand dishonest behavior have increased. However, one of the main questions yet to be answered is whether dishonesty varies according to gender. Do men behave more dishonestly than women? Although the literature points to a yes, there is still no consensus on the matter. We examined gender differences in dishonesty in a large sample (N = 2,452) using a model recently developed by Pascual-Ezama et al. It is a variation of the classic die-under-the-cup task. It enabled us to identify individual dishonesty profiles and look for gender differences between them. The results show that the men were more prone to behave dishonestly than women with small rewards, who seem satisfied without maximizing the potential reward. However, the differences vanished when there was no reward. The men also showed more radical dishonest behavior than the women. The results also suggest that gender differences might be shaped by factors other than gender.

How an idiosyncratic (zero-beta) risk can greatly increase the firm’s cost of capital

The celebrated capital asset pricing model (‘CAPM’) brought numerous appealing insights and spawned a new theory of capital budgeting. One key intuition is that there is ‘no penalty for diversifiable risk’ – that is, any risky payoff that has zero-correlation with the wider economy, and hence zero-beta, is treated as ‘risk-free’. Does that mean that managers can bet the firm on a spin of the roulette wheel without attracting a higher CAPM discount rate? Our re-interpretation of CAPM reveals that potential financial losses which are conventionally regarded as firm-specific ‘unpriced’ risks can bring a large increase in the firm’s beta and CAPM cost of capital, despite having zero-beta and making only negligible difference at the aggregate market level. This mathematical result clashes with textbook expositions but is easily demonstrated and can be traced to authoritative but overlooked parts of the theoretical CAPM literature. JEL Classification: G11, G12

Environmental risks and power plant suspensions

Power sector investment is crucial to accelerate a sustainable energy transition, but not all investments are successful. To shed light on investment trends, we examine 1393 Chinese overseas electric power projects spanned around 78 countries over the past two decades. We identify 5% have been cancelled or delayed, with coal and hydro projects having much higher failure rates than solar and wind projects. We find the suspension is associated with technology-specific, georeferenced environmental risks. Coal projects located in more densely populated areas where more people are exposed to air pollutants, in countries with more fatalities from extreme weather events, and in places with environmental protests, are more likely to be suspended. Additionally, hydro projects closer to protected areas have a higher suspension rate. Our results suggest that restraining from investing in environmentally risky projects helps mitigate environmental damages and prevent financial losses due to cancellation and postponement.