Factors Contributing to the Catastrophe in Mexico City During the Earthquake of September 19, 1985

The extensive damage to high‐rise buildings in Mexico City during the September 19, 1985 earthquake is primarily due to the intensity of the ground shaking exceeding what was previously considered credible for the city by Mexican engineers. There were two major factors contributing to the catastrophe, resonance in the sediments of an ancient lake that once existed in the Valley of Mexico, and the long duration of shaking compared with other coastal earthquakes in the last 50 years. Both of these factors would be operative again if the Guerrero seismic gap ruptured in a single earthquake

Resilience Capacity and Strategic Agility: Prerequisites for Thriving in a Dynamic Environment

organizational resilience, strategic agility, competitive dynamics

Dynamic Characteristics of Woodframe Buildings

The dynamic properties of wood shearwall buildings were evaluated, such as modal frequencies, damping and mode shapes of the structures. Through analysis of recorded earthquake response and by forced vibration testing, a database of periods and damping ratios of woodframe buildings was developed. Modal identification was performed on strong-motion records obtained from five buildings, and forced vibration tests were performed on a two-story house and a three-story apartment building, among others. A regression analysis is performed on the database to obtain a period formula specific for woodframe buildings. It should be noted that all test results, including the seismic data, are at small drift ratios (less than 0.1%), and the periods would be significantly longer for stronger shaking of these structures. Despite these low amplitudes, the equivalent viscous dampings for the fundamental modes were usually more than 10% of critical during earthquake shaking

Unique additive information measures - Boltzmann-Gibbs-Shannon, Fisher and beyond

It is proved that the only additive and isotropic information measure that can depend on the probability distribution and also on its first derivative is a linear combination of the Boltzmann-Gibbs-Shannon and Fisher information measures. Power law equilibrium distributions are found as a result of the interaction of the two terms. The case of second order derivative dependence is investigated and a corresponding additive information measure is given.Comment: 10 pages, 1 figures, shortene

Developing a capacity for organizational resilience through strategic human resource management

Resilient organizations thrive despite experiencing conditions that are surprising, uncertain, often adverse, and usually unstable. We propose that an organization\u27s capacity for resilience is developed through strategically managing human resources to create competencies among core employees, that when aggregated at the organizational level, make it possible for organizations to achieve the ability to respond in a resilient manner when they experience severe shocks. We begin by reviewing three elements central to developing an organization\u27s capacity for resilience (specific cognitive abilities, behavioral characteristics, and contextual conditions). Next we identify the individual level employee contributions needed to achieve each of these elements. We then explain how HR policies and practices within a strategic human resource management system can influence individual attitudes and behaviors so that when these individual contributions are aggregated at the organizational level through the processes of double interact and attraction–selection–attrition, the organization is more likely to possess a capacity for resilience

LITTLE ALBERT: A Neurologically Impaired Child

Evidence collected by Beck, Levinson, and Irons (2009) indicates that Albert B., the “lost” infant subject of John B. Watson and Rosalie Rayner’s (1920) famous condi tioning study, was Douglas Merritte (1919 –1925). Following the finding that Merritte died early with hydrocephalus, questions arose as to whether Douglas’s condition was congenital, rather than acquired in 1922, as cited on his death certificate. This etiology would imply that “Little Albert” was not the “healthy” and “normal” infant described by Watson and numerous secondary sources. Detailed analyses of Watson’s (1923) film footage of Albert suggested substantial behavioral and neurological deficits. The anomalies we observed on film of Albert B. are insufficiently explained by his hospital upbringing but are consistent with findings from newly discovered medical records of Douglas Merritte. These documents revealed that the infant suffered from congenital obstructive hydrocephalus, iatrogenic streptococcal meningitis/ventriculitis, and retinal and optic nerve atrophy. The medical history also indicates that Albert’s sessions with Watson occurred during periods when Douglas’s clinical course was relatively stable. Further inquiries found ample sources of information available to Watson that would have made him aware of Douglas/Albert’s medical condition at the times he tested the baby. Experimental ethics, Watson’s legacy, and the Albert study are discussed in light of these new findings

Development and Validation of Scores on a Measure of Six Academic Orientations in College Students

This article describes the development and score validation of a 36-item measure of six academic orientations in college students: structure dependence, creative expression, reading for pleasure, academic efficacy, academic apathy, and mistrust of instructors. Results from three studies indicate that the measuring instrument, the Survey of Academic Orientations (SAO), has six factorially distinct scales (Study 1) whose scores are stable across different semesters, yielding test-retest coefficients that range from .63 to .86 (Study 2). Also, each of the six scales relates in expected ways to basic personality traits, yielding validity coefficients of .30 to .69 (Study 3). Scores on the six scales are internally consistent, yielding coefficients alpha that range from .59 to .85 (Studies 1-3). Scale scores and a summative score of all 36 items, called the Adaptiveness index, are examined for their potential in predicting a variety of important student outcomes

The Relations of Learning and Grade Orientations to Academic Performance

This investigation assessed the roles of learning orientation (LO) and grade orientation (GO) in academic performance. Most important, we found that GO was negatively correlated with grade point average (GPA) and General Psychology test scores. Correlations of LO scores with the academic performance measures were not significant. The poor academic performance of students with high GO scores can be partially attributed to lower Scholastic Aptitude Tests (SAT) scores. Even after the effects of SA T were controlled, GO scores were negatively related to G PA and psychology test scores. These findings demonstrate the need for investigations to determine the effects of grading practices on students with high and low grade orientations

Predicting Misuse and Disuse of Combat Identification Systems

Two combat identification systems have been designed to reduce fratricide by providing soldiers with the ability to "interrogate" a potential target by sending a microwave or laser signal that, if returned, identifies the target as a "friend." Ideally, gunners will appropriately rely on these automated aids, which will reduce fratricide rates. However, past research has found that human operators underutilize (disuse) and overly rely on (misuse) automated systems (cf. Parasuraman & Riley, 1997). The purpose of this laboratory study was to simultaneously examine misuse and disuse of an automated decision-making aid at varying levels of reliability. With or without the aid of an automated system that is correct about 90%, 75%, or 60% of the time, 91 college students viewed 226 slides of Fort Sill terrain and indicated the presence or absence of camouflaged soldiers. Regardless of the reliability of the automated aid, misuse was more prevalent than disuse

Finding Little Albert: Reports on a seven-year search for psychology’s lost boy

In 1920 the British Psychological Society invited John Broadus Watson to address a symposium on behaviourism (Watson, 1920). Watson was disappointed that his university was unable to fund his crossing. This article provides new information about a study Watson would most likely have presented to the Society had his monetary circumstances been more favourable.In the winter of 1919/20, Watson and his graduate assistant, Rosalie AlbertaRayner, attempted to condition a baby boy, Albert B., to fear a white laboratory rat (Watson & Rayner, 1920). They later reported that the child’s fear generalized to other furry objects. The ‘Little Albert’ investigation was the last published study of Watson’s academic career. Watson and Rayner became embroiled in a scandalous affair, culminating in his divorce and dismissal from Johns Hopkins.Despite its methodological shortcomings and questionable ethics (Cornwell & Hobbs, 1976; Samelson, 1980), the attempted conditioning of Albert is a staple in psychology textbooks and one of the most influential investigations in the discipline. The continuing appeal of Watson and Rayner’s research is not solely due to the importance of their purported findings. Much of the fascination with the study is attributable to Albert himself. After the last day of testing, Albert left his home on the Johns Hopkins campus.His disappearance created one of the greatest mysteries in the history of psychology. ‘Whatever happened to Little Albert?’ is a question that has intrigued generations of students and professional psychologists (Harris, 1979). This article is a detective story summarizing the efforts of my co-authors, my students and myself to resolve a 90-year-old cold case