A work sampling investigation of white collar workers (female-clerical)

M.S. University of Kansas, Mechanical Engineering 1958This investigation was carried out to determine the distribution of the work effort of clerical workers into the different work activities. It was also intended to determine the amount of time spent on personal needs by the above group of workers and compare it with the personal and/or fatigue allowances reported by various authors in texts on motion or time study. In the four departments selected, a total of 30 workers were observed. Fourteen work-and-delay-activities were listed on an observation sheet and some of them were further qualified by such such suffixes as “a,” “b,” “w,” and “p.” The workers were observed at all times of the working hours, except official rest periods, using a scheme of systematic sampling. The purpose of the investigation was made known to the workers prior to the beginning of the actual observations, to ensure a normal and relaxed atmosphere. An examination of the computed data shows that although there is considerable variation in the productivity of the different departments, the percentage of the percentage of the total personal delays is consistent from one department to another. This again varies significantly within each department, as the “direct work” and supporting delays.” There is enough evidence to believe that, within each department, individual workers have stable work patterns, although at different levels

Deccan volcanism and K-T boundary signatures

The Deccan Traps in the Indian subcontinent represent one of the most extensive flood basalt provinces in the world. These basalts occur mainly as flat-lying, subaerially erupted tholeiitic lava flows, some of which are traceable for distances of more than 100 km. Offshore drilling and geophysical surveys indicate that a part of the Deccan subsided or was downfaulted to the west beneath the Arabian Sea. The presence of 1 to 5 m thick intertrappean sediments deposited by lakes and rivers indicates periods of quiescence between eruptions. The occurrence of numerous red bole beds among the flows suggests intense weathering of flow tops between eruptive intervals. Although the causative relationship of the Cretaceous-Tertiary (K-T) biotic extinctions to Deccan volcanism is debatable, the fact that the main Deccan eruptions straddle the K-T event appears beyond doubt from the recent Ar-40/Ar-39 ages of various Deccan flows. This temporal relationship of the K-T event with Deccan volcanism makes the petrochemical signatures of the entire Deccan sequence (basalt flows, intercalated intertrappean sediments, infratrappean Lameta beds (with dinosaur fossils), and the bole beds) pertinent to studies of the K-T event. The results of ongoing study is presented

Investigating the generalizability of EEG-based Cognitive Load Estimation Across Visualizations

We examine if EEG-based cognitive load (CL) estimation is generalizable across the character, spatial pattern, bar graph and pie chart-based visualizations for the nback~task. CL is estimated via two recent approaches: (a) Deep convolutional neural network, and (b) Proximal support vector machines. Experiments reveal that CL estimation suffers across visualizations motivating the need for effective machine learning techniques to benchmark visual interface usability for a given analytic task

A Study of Water-Soluble Inhibitory Compounds (Algicides) Produced by Fresh-Water Algae

A complex system of growth inhibitors was observed in the green algae (Volvocaceae). Inhibitors were found in the culture filtrates of some genera which limit their own growth (autoinhibitors) while others in the family produce substances which check the growth of other genera (heteroinhibitors). These inhibitors were destroyed by autoclaving. It was decided that Pandorina morum, which produced the strongest inhibitor and Volvox tertius, the most sensitive to the inhibitor would make an excellent model system for a study of the chemical and physical properties of these naturally occurring algicides. The algicide could be removed from actively growing cultures about the 12th day after inoculation and maximum inhibition was recorded for the next 18 days. The substance could be diluted several times with the retention of at least partial activity. The inhibitor was relatively stable to high temperatures, moved slowly through a dialysis membrane and possessed anti-bacterial properties in that it inhibited the growth of Staphylococcus aureus. The material was relatively stable when exposed to acid, although exposure to a pH of 2.0 for 30 minutes did destroy most of the activity. The substance was soluble in benzene and chloroform. All attempts to degrade or destroy the inhibitor with the common proteolytic enzymes (trypsin, chymotrypsin and pronase) proved unsuccessful, suggesting the substance is not proteinaceous in nature. In experiments with G-25 and G-50 Sephadex, the inhibitor was retained on the column, indicating a molecular weight of less than 5000. The Clark type oxygen electrode revealed that the inhibitor greatly reduced photosynthetic rates in Volvox. A 65% reduction in the rate of photosynthesis was observed after several minutes exposure to medium in which Pandorina morum had been growing. Respiration rates were apparently unaffected

Topics concerning state variable feedback in automatic control systems. Part 1 - Specification. Part 2 - Sensitivity. Part 3 - Intentional nonlinearities. Part 4 - Unavailable states

Specifications, sensitivity, intentional nonlinearities, and unavailable states concerned with state variable feedback in automatic control system

North Indian Ocean warming and sea level rise in an OGCM

The variability in the long-term temperature and sea level over the north Indian Ocean during the period 1958–2000 has been investigated using an Ocean General Circulation Model, Modular Ocean Model version 4. The model simulated fields are compared with the sea level observations from tide-gauges, Topex/Poseidon (T/P) satellite, in situ temperature profile observations from WHOI moored buoy and sea surface temperature (SST) observations from DS1, DS3 and DS4 moored buoys. It is seen that the long (6–8 years) warming episodes in the SST over the north Indian Ocean are followed by short episodes (2–3 years) of cooling. The model temperature and sea level anomaly over the north Indian Ocean show an increasing trend in the study period. The model thermocline heat content per unit area shows a linear increasing trend (from 1958–2000) at the rate of 0.0018 × 1011 J/m2 per year for north Indian Ocean. North Indian Ocean sea level anomaly (thermosteric component) also shows a linear increasing trend of 0.31 mm/year during 1958–2000

An EEG-Based Image Annotation System

The success of deep learning in computer vision has greatly increased the need for annotated image datasets. We propose an EEG (Electroencephalogram)-based image annotation system. While humans can recognize objects in 20–200 ms, the need to manually label images results in a low annotation throughput. Our system employs brain signals captured via a consumer EEG device to achieve an annotation rate of up to 10 images per second. We exploit the P300 event-related potential (ERP) signature to identify target images during a rapid serial visual presentation (RSVP) task. We further perform unsupervised outlier removal to achieve an F1-score of 0.88 on the test set. The proposed system does not depend on category-specific EEG signatures enabling the annotation of any new image category without any model pre-training

The idea of equality in English political thought

An attempt is made here to examine the analysis three political thinkers - Thomas Peine, Hlliam Godwin, and Jeremy Bentham have offered of the idea of equality. The inquiry underrtaken is philosophical and not historical in character, since no attempt is made either at tracing the influence ht the biographical-cum-intellectual level of one of them upon the other or at treating their ideas on equality as born out of their preoccupation with the same problem to which they give various answers and which can therefore be considered within a single overall framework. Instead , each thinker is considered independently. And a study is undertaken of the way he understands equality, the way he justifies it, the sort of equality he considers most important and his reasons for this, the area of life he takes the idea of equality to illuminate , the manner in which he relates it to other ideas, etc.. In each case, a fairly coherent philosophy of equality is sought to be constructed out of their respective writings. These three thinkers are selected for two reasons. The idea of equality looms quite large in their thought; as such, it was felt that looking at their writings from the standpoint of equality may illuminate their certain features that may otherwise remain obscure or relatively underemphasized. Further, as they consider equality from different philosophical positions it was believed that a critical examination of their writings could, perhaps, point to the general merits and limitations of their respective positions in terms of equality. in chapter I, it is argued that there are distinct views of God discernible in Paine's writings, and that corresponding to them are three distinct views of equality, though only two of them are discussed by Paine at any length. in chapter II, it is argued that, though Godwin begins as a thoroughgoing rationalist, three are shifts in his general philosophical position, and that, with each shift, his ideas on truth, rationality and equality undergo important changes. Finally, in chapter III, it is argued that there are two distinct theories of equality in Bentham and that tension between them remains unresolved

A novel approach to improving the reliability of manual semen analysis: a paradigm shift in the workup of infertile men.

Conventional semen analysis (SA) is an essential component of the male infertility workup, but requires laboratories to rigorously train and monitor technicians as well as regularly perform quality assurance assessments. Without such measures there is room for error and, consequently, unreliable results. Furthermore, clinicians often rely heavily on SA results when making diagnostic and treatment decisions, however conventional SA is only a surrogate marker of male fecundity and does not guarantee fertility. Considering these challenges, the last several decades have seen the development of many advances in SA methodology, including tests for sperm DNA fragmentation, acrosome reaction, and capacitation. While these new diagnostic tests have improved the scope of information available to clinicians, they are expensive, time-consuming, and require specialized training. The latest advance in laboratory diagnostics is the measurement of seminal oxidation-reduction potential (ORP). The measurement of ORP in an easy, reproducible manner using a new tool called the Male Infertility Oxidative Stress System (MiOXSYS) has demonstrated ORP's potential as a feasible adjunct test to conventional SA. Additionally, the measurement of ORP by this device has been shown to be predictive of both poor semen quality and male infertility. Assessing ORP is a novel approach to both validating manual SA results and identifying patients who may benefit from treatment of male oxidative stress infertility