scholarly journals Laboratory Evaluation and Control of Slocum Glider C–T Sensors

2011 ◽  
Vol 28 (6) ◽  
pp. 838-846 ◽  
Author(s):  
Nevio Medeot ◽  
Rajesh Nair ◽  
Riccardo Gerin
Keyword(s):  
Temperature Response ◽  
Sensor Data ◽  
Laboratory Evaluation ◽  
Short Term ◽  
Sensor Performance ◽  
Conductivity Sensor ◽  
Salinity Data ◽  
Extraneous Material ◽  
And Control

Abstract Unaccounted transient or permanent changes in sensor performances can compromise the overall quality of datasets obtained with a glider. From the specific perspective of the principal physical variables (temperature and conductivity), the main short-term risk is the deterioration of the quality of salinity data that is primarily due to the fouling of the glider’s conductivity sensor, especially when the glider approaches the sea surface and is deployed in coastal waters. Another potential short-term risk is a sudden shift in the glider’s temperature response caused by the blanketing of the temperature sensor by extraneous material. The long-term risks are the intrinsic drifts of the two sensors as specified by the sensor manufacturer. Given the way a glider operates, it is practically impossible to obtain sufficiently representative temperature and salinity samples in the field for effective comparisons with sensor data. Hence, laboratory testing of the temperature and conductivity sensors is one approach used to estimate the qualitative changes in pre- and postdeployment sensor performance in order to mitigate measurable drift effects on the collected data. This paper presents a systematic procedure that can be used to conduct reproducible laboratory evaluations of the temperature and conductivity sensors on a Teledyne Webb Research (TWR) Slocum glider. It is shown that the data from such tests can give useful information regarding the data quality as a result of fouling of the sensors during missions. Obviously, this kind of information is valuable when the reliability of mission-generated temperature and conductivity data, which are used to determine salinity, have to be assessed.

The Investigation of Optimal Experience and Apathy

2005 ◽  
Vol 10 (4) ◽  
pp. 264-274 ◽  
Author(s):  
Antonella Delle Fave ◽  
Fausto Massimini
Keyword(s):  
Empirical Evidence ◽  
Quality Of Experience ◽  
Open Systems ◽  
Individual Development ◽  
Optimal Experience ◽  
Short Term ◽  
Psychological Features ◽  
And Control

Abstract. Individuals, as living open systems, actively interact with their environment. Throughout their life, they preferentially replicate a subset of the available opportunities for action. This process has been labeled psychological selection, and it is based on the quality of experience reported in daily situations. Empirical evidence has shown that individuals preferentially select, reproduce, and cultivate the activities associated with optimal experience, a distinctively positive and complex state of consciousness characterized by the perception of high challenges balanced with adequate skills, concentration and engagement, clear goals and rules, and control of the situation. From this perspective, optimal experience fosters the development of individual competencies, shaping the pattern of psychological selection. Empirical evidence was also gathered for apathy, the negative pole of experience fluctuation, characterized by disengagement, disruption of attention, negative affect, and low perceived challenges. This paper will provide findings concerning the psychological features of optimal experience and apathy across different samples and activities. A stable cognitive core was detected for both states, around which affective and motivational variables fluctuate according to the structure of the associated activities. The regulating function of short-term desirability and perceived long-term goals on the quality of experience was also highlighted. Results suggested that the association of optimal experiences and skill cultivation with structured and long-term meaningful activities could be used as an intervention tool for the promotion of individual development and social integration in youth and adults.

Specific conductivity sensor performance: I. Laboratory evaluation

2013 ◽  
Vol 27 (5) ◽  
pp. 329-344 ◽  
Author(s):  
Travis P. Maupin ◽  
Carmen T. Agouridis ◽  
Christopher D. Barton ◽  
Richard C. Warner ◽  
Xia Yu
Keyword(s):  
Specific Conductivity ◽  
Laboratory Evaluation ◽  
Sensor Performance ◽  
Conductivity Sensor

Resistance Monitor and Control for Vacuum Evaporation of Metals and Carbon

1976 ◽  
Vol 34 ◽  
pp. 572-573
Author(s):  
Russell L. Steere ◽  
Eric F. Erbe ◽  
J. Michael Moseley
Keyword(s):  
Electronic Device ◽  
Point Sources ◽  
High Contrast ◽  
Variable Resistor ◽  
Quality Of Results ◽  
Low Contrast ◽  
Evaporation Source ◽  
And Control ◽  
At Will

We have designed and built an electronic device which compares the resistance of a defined area of vacuum evaporated material with a variable resistor. When the two resistances are matched, the device automatically disconnects the primary side of the substrate transformer and stops further evaporation.This approach to controlled evaporation in conjunction with the modified guns and evaporation source permits reliably reproducible multiple Pt shadow films from a single Pt wrapped carbon point source. The reproducibility from consecutive C point sources is also reliable. Furthermore, the device we have developed permits us to select a predetermined resistance so that low contrast high-resolution shadows, heavy high contrast shadows, or any grade in between can be selected at will. The reproducibility and quality of results are demonstrated in Figures 1-4 which represent evaporations at various settings of the variable resistor.

Cathartic Effect of Suicide Attempts Not Limited to Depression

Crisis ◽  
2003 ◽  
Vol 24 (2) ◽  
pp. 73-78 ◽  
Author(s):  
Yves Sarfati ◽  
Blandine Bouchaud ◽  
Marie-Christine Hardy-Baylé
Keyword(s):  
Quality Of Life ◽  
Depressive Symptoms ◽  
Personality Traits ◽  
Rating Scales ◽  
Suicide Attempts ◽  
World Health ◽  
Life Questionnaire ◽  
Short Term

Summary: The cathartic effect of suicide is traditionally defined as the existence of a rapid, significant, and spontaneous decrease in the depressive symptoms of suicide attempters after the act. This study was designed to investigate short-term variations, following a suicide attempt by self-poisoning, of a number of other variables identified as suicidal risk factors: hopelessness, impulsivity, personality traits, and quality of life. Patients hospitalized less than 24 hours after a deliberate (moderate) overdose were presented with the Montgomery-Asberg Depression and Impulsivity Rating Scales, Hopelessness scale, MMPI and World Health Organization's Quality of Life questionnaire (abbreviated versions). They were also asked to complete the same scales and questionnaires 8 days after discharge. The study involved 39 patients, the average interval between initial and follow-up assessment being 13.5 days. All the scores improved significantly, with the exception of quality of life and three out of the eight personality traits. This finding emphasizes the fact that improvement is not limited to depressive symptoms and enables us to identify the relative importance of each studied variable as a risk factor for attempted suicide. The limitations of the study are discussed as well as in particular the nongeneralizability of the sample and setting.

On Being Precarious

2020 ◽  
Vol 50 (1) ◽  
pp. 51-54
Author(s):  
Deirdre Flynn
Keyword(s):  
Quality Of Life ◽  
Short Term ◽  
Teaching Research ◽  
Part Time

In this essay, I reflect on my experience of part-time, fixed term, zero-hour, short-term, and unpaid contracts in academia. Precarious contracts are one of the biggest challenges facing our industry as neo-liberal values rule our institutions, impacting our teaching, research, and quality of life.

Boilerplate

2012 ◽  
Author(s):  
Margaret Jane Radin
Keyword(s):  
Economic Efficiency ◽  
Analytical Framework ◽  
Daily Basis ◽  
Regulatory Agencies ◽  
Jury Trial ◽  
Comprehensive Treatment ◽  
New Methods ◽  
And Control ◽  
Fine Print

Boilerplate—the fine-print terms and conditions that we become subject to when we click “I agree” online, rent an apartment, or enter an employment contract, for example—pervades all aspects of our modern lives. On a daily basis, most of us accept boilerplate provisions without realizing that should a dispute arise about a purchased good or service, the nonnegotiable boilerplate terms can deprive us of our right to jury trial and relieve providers of responsibility for harm. Boilerplate is the first comprehensive treatment of the problems posed by the increasing use of these terms, demonstrating how their use has degraded traditional notions of consent, agreement, and contract, and sacrificed core rights whose loss threatens the democratic order. This book examines attempts to justify the use of boilerplate provisions by claiming either that recipients freely consent to them or that economic efficiency demands them, and it finds these justifications wanting. It argues that our courts, legislatures, and regulatory agencies have fallen short in their evaluation and oversight of the use of boilerplate clauses. To improve legal evaluation of boilerplate, the book offers a new analytical framework, one that takes into account the nature of the rights affected, the quality of the recipient's consent, and the extent of the use of these terms. It goes on to offer possibilities for new methods of boilerplate evaluation and control, and concludes by discussing positive steps that NGOs, legislators, regulators, courts, and scholars could take to bring about better practices.

Management and engineering solutions to improve processing stock quality and reduce resource-intensity of mining

2018 ◽  
pp. 56-68
Author(s):  
V. V. Agafonov ◽  
V. Yu. Zalyadinov ◽  
M. E. Yusupov ◽  
N. S. Bikteeva
Keyword(s):  
Development Strategy ◽  
Open Pit ◽  
Mining Operations ◽  
High Concern ◽  
General Production ◽  
Resource Intensity ◽  
Product Output ◽  
And Control ◽  
A Company

Sustainability of mining companies is of of high concern. The problem is specifically acute at companies that are monotownor monosettlement-forming. Sustainability of a mine depends in many ways on product quality and production resource-intensity. This article discusses formation of mineral quality indexes in terms of an open pit chrysotile mine. The studies took into account specific features of operation procedures implemented by each structural division of the mine. The analysis has found managerial and technological inconsistencies which affect quality and marketable product output, as well as efficiency of the mine in whole. The background for efficiency enhancement at a company is, by the authors’ opinion, consolidation of personnel subject to the single development strategy, namely: improvement of production and control efficiency, as well as use of available reserves and resources by means of better setup for production. The proposed approaches to planning mining operations and forming mineral quality allow higher quality of processing stock. In addition, a new model proposed for interaction between structural divisions of a mining company ensures improvement of general production indexes.

EFFICIENT MANAGEMENT SYSTEM OF TEACHING TECHNICAL MEANS AT CENTRAL KINDERGARTEN PEDAGOGY COLLEGE IN INDUSTRIAL REVOLUTION 4.0

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Vũ Xuân Hùng
Keyword(s):  
Intellectual Development ◽  
Industrial Revolution ◽  
Current Period ◽  
Efficient Management ◽  
Urgent Task ◽  
Creative Learning ◽  
Cognitive Activities ◽  
And Control ◽  
Technical Teaching

In the process of teaching, technical teaching facilities are both a content and a means of conveying information, they help the lecturer organize and control the students' cognitive activities, in addition, they also help students be interested in learning, practice practical skills from which to form active and creative learning methods. Teaching technology is one of the necessary conditions to help teachers carry out their related work of educating, teaching and bringing up, and intellectual development, arouse the inherent intelligence qualities of students. Currently, the management of technical teaching facilities at the Central Kindergartens College has been carried out on a regular basis and achieved certain results, but in fact, there are still many inadequacies. Finding a number of limitations in the management of teaching technical facilities, thereby proposing solutions to overcome those limitations, improve the efficiency of investment, preservation and use of teaching technical facilities in the trend of Industry Revolution 4.0, improving the quality of teaching at Central Kindergarten Pedagogy colleges in the current period is a very important and urgent task.

The Implementation of Learning Materials Based on Local Wisdom of Agricultural in Binjai to Improve the Students Problem Solving Abilities

2019 ◽  
Author(s):  
Nur Tsalits Fahman Mughni
Keyword(s):  
Problem Solving ◽  
Control Group ◽  
School Grade ◽  
Teaching Materials ◽  
Quasi Experimental ◽  
Equivalent Control ◽  
The Subject ◽  
And Control ◽  
Experimental Group

Teaching materials by integrating local culture makes easier for students to understand the subject matter in the learning process. The aims of the study is to measure the effectiveness of teaching materials based on local wisdom of agriculture in Binjai in improving the students problem solving abilities. The research method was a quasi experimental which use non equivalent control group in the pretest posttest design. The sample of study were students of Senior High School grade X in Binjai that consisted of experiment group which used teaching materials based on local wisdom of agriculture in Binjai and control group that used student handbooks. Teaching materials are tested by material experts and technology experts to ensure the quality of teaching materials. Data collection was conducted through test. The results showed that the teaching materials based on local wisdom of agriculture in Binjai effective in improving students problem solving abilities in the experimental group students based on the results of N gain value was 0.67 which has medium criteria. It means teaching materials based on agricultural local wisdom of agriculture in Binjai can be used as one of the teaching materials in learning activities.

Sign in / Sign up

Export Citation Format

Share Document