scholarly journals A Quantitative Theory of Information, Worker Flows, and Wage Dispersion

2018 ◽  
Vol 10 (2) ◽  
pp. 154-183 ◽  
Author(s):  
Amanda M. Michaud
Keyword(s):  
Life Cycle ◽  
Structural Model ◽  
Type I ◽  
Model Learning ◽  
Cross Sectional ◽  
Employer Learning ◽  
High Productivity ◽  
Employment Dynamics ◽  
Worker Flows ◽  
Theory Of Information

Employer learning provides a link between wage and employment dynamics. Workers who are selectively terminated when their low productivity is revealed subsequently earn lower wages. If learning is asymmetric across employers, randomly separated high-productivity workers are treated similarly when hired from unemployment, but recover as their next employer learns their type. I provide empirical evidence supporting this link, then study whether employer learning is an empirically important factor in wage and employment dynamics. In a calibrated structural model, learning accounts for 78 percent of wage losses after unemployment, 24 percent of life-cycle wage growth, and 13 percent of cross-sectional dispersion observed in data. (JEL D83, E24, J23, J24, J31, J62)

Effect of Early Low-Intensity Exercise on Rat Hind-Limb Muscles Following Acute Ischemic Stroke

2006 ◽  
Vol 7 (3) ◽  
pp. 163-174 ◽  
Author(s):  
Myoung-Ae Choe ◽  
Gyeong Ju An ◽  
Yoon-Kyong Lee ◽  
Ji Hye Im ◽  
Smi Choi-Kwon ◽  
...  
Keyword(s):  
Hind Limb ◽  
Gastrocnemius Muscle ◽  
Exercise Group ◽  
Cross Sectional Area ◽  
Type I ◽  
Sectional Area ◽  
Muscle Type ◽  
Cross Sectional ◽  
Low Intensity ◽  
Low Intensity Exercise

This study examined the effects of daily low-intensity exercise following acute stroke on mass, Type I and II fiber cross-sectional area, and myofibrillar protein content of hind-limb muscles in a rat model. Adult male Sprague-Dawley rats were randomly assigned to 1 of 4 groups (n = 7-9 per group): stroke (occlusion of the right middle cerebral artery [RMCA]), control (sham RMCA procedure), exercise, and stroke-exercise. Beginning 48 hours post-stroke induction/sham operation, rats in the exercise group had 6 sessions of exercise in which they ran on a treadmill at grade 10 for 20 min/day at 10 m/min. At 8 days poststroke, all rats were anesthetized and soleus, plantaris, and gastrocnemius muscles were dissected from both the affected and unaffected sides. After 6 sessions of exercise following acute ischemic stroke, the stroke-exercise group showed the following significant (p < .05) increases compared to the stroke-only group: body weight and dietary intake, muscle weight of affected soleus and both affected and unaffected gastrocnemius muscle, Type I fiber cross-sectional area of affected soleus and both affected and unaffected gastrocnemius muscle, Type II fiber cross-sectional area of the unaffected soleus, both affected and unaffected plantaris and gastrocnemius muscle, Type II fiber distribution of affected gastrocnemius muscle, and myofibrillar protein content of both affected and unaffected soleus muscle. Daily low-intensity exercise following acute stroke attenuates hind-limb muscle atrophy in both affected and unaffected sides. The effects of exercise are more pronounced in the soleus and gastrocnemius as compared to the plantaris muscle.

scholarly journals Relationship between Emotional Intelligence, Sleep Quality and Body Mass Index in Emergency Nurses

Healthcare ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 607
Author(s):  
Noelia Miguez-Torres ◽  
Alejandro Martínez-Rodríguez ◽  
María Martínez-Olcina ◽  
Laura Miralles-Amorós ◽  
Cristina Reche-García
Keyword(s):  
Body Mass Index ◽  
Emotional Intelligence ◽  
Sleep Quality ◽  
Body Mass ◽  
Working Hours ◽  
Type I ◽  
Emotional States ◽  
Emergency Nurses ◽  
Cross Sectional ◽  
Lack Of Sleep

Nurses have long working hours with high psychological burdens. In addition, in the emergency department, nurses are required to quickly adapt emotionally. The aim of this study was to describe and relate emotional intelligence (EI) skills of emergency nurses, their body mass index (BMI) and sleep quality. For this purpose, a cross-sectional was carried out in which the perceived emotional intelligence test and the Pittsburgh sleep quality index were applied. Sixty-two emergency nurses (48 women and 14 men) participated. The results indicated that the majority of them present adequate levels of EI, with no differences by gender. Younger nurses showed a better ability to feel, express and understand emotional states than the older ones, while the ability to regulate emotional states occurred in the opposite way. Nurses who have been working for several years showed a better ability to regulate emotions than those with less experience. Those who were overweight grade II and obese type I expressed their feelings better, also the regulation of emotional states decreased as weight increased. Finally, it has been observed that the quality of sleep of emergency nurses is significantly altered, and that this lack of sleep may affect their ability to process emotions.

scholarly journals Can Psychological Empowerment Prevent Emotional Disorders in Presence of Fear of COVID-19 in Health Workers? A Cross-Sectional Validation Study

2021 ◽  
Vol 10 (8) ◽  
pp. 1614
Author(s):  
Marta Llorente-Alonso ◽  
Cristina García-Ael ◽  
Gabriela Topa ◽  
María Luisa Sanz-Muñoz ◽  
Irene Muñoz-Alcalde ◽  
...  
Keyword(s):  
Emotional Disorders ◽  
Goodness Of Fit ◽  
Discriminant Validity ◽  
Structural Model ◽  
Mental Health Problems ◽  
Health Workers ◽  
Psychological Empowerment ◽  
Close Contact ◽  
Job Crafting ◽  
Cross Sectional

The global emergency produced by COVID-19 has been a turning point for health organizations. Healthcare professionals have been exposed to high levels of stress and workload. Close contact with infected patients and the infectious capacity of COVID-19 mean that this group is especially vulnerable to contagion. In various countries, the Fear of COVID-19 Scale has been shown to be a fast and reliable tool. Early detection of fear complements clinical efforts to prevent emotional disorders. Thus, concepts focused on positive occupational health, such as Job Crafting or psychological empowerment (PE), have been examined as a tool to prevent mental health problems at work. In this work, we intended to adapt and validate the 7-item Fear of COVID-19 Scale in health workers (N = 194). The interpretation of the measurement model indicates adequate values of internal consistency reliability, and convergent and discriminant validity. The overall goodness of fit of the model was also adequate. The structural model indicates that the implementation of job crafting measures in health services leads to workers’ greater PE. High levels of anxiety and depression prevent health professionals from psychologically detaching from work. In turn, PE can reduce the emotional disorders caused by the fear of COVID-19.

scholarly journals Physiology of a Microgravity Environment Invited Review: Microgravity and skeletal muscle

2000 ◽  
Vol 89 (2) ◽  
pp. 823-839 ◽  
Author(s):  
Robert H. Fitts ◽  
Danny R. Riley ◽  
Jeffrey J. Widrick
Keyword(s):  
Skeletal Muscle ◽  
Muscle Atrophy ◽  
Thin Filament ◽  
Molecular Mechanisms ◽  
Skeletal Muscle Atrophy ◽  
Microgravity Environment ◽  
Type I ◽  
Fiber Types ◽  
Maximal Velocity ◽  
Cross Sectional

Spaceflight (SF) has been shown to cause skeletal muscle atrophy; a loss in force and power; and, in the first few weeks, a preferential atrophy of extensors over flexors. The atrophy primarily results from a reduced protein synthesis that is likely triggered by the removal of the antigravity load. Contractile proteins are lost out of proportion to other cellular proteins, and the actin thin filament is lost disproportionately to the myosin thick filament. The decline in contractile protein explains the decrease in force per cross-sectional area, whereas the thin-filament loss may explain the observed postflight increase in the maximal velocity of shortening in the type I and IIa fiber types. Importantly, the microgravity-induced decline in peak power is partially offset by the increased fiber velocity. Muscle velocity is further increased by the microgravity-induced expression of fast-type myosin isozymes in slow fibers (hybrid I/II fibers) and by the increased expression of fast type II fiber types. SF increases the susceptibility of skeletal muscle to damage, with the actual damage elicited during postflight reloading. Evidence in rats indicates that SF increases fatigability and reduces the capacity for fat oxidation in skeletal muscles. Future studies will be required to establish the cellular and molecular mechanisms of the SF-induced muscle atrophy and functional loss and to develop effective exercise countermeasures.

scholarly journals Relationship Between Incidence of Hyaline Membrane Disease and Maternal Hypertension During Pregnancy

2017 ◽  
Vol 38 (3-4) ◽  
pp. 47
Author(s):  
Lasmida Nazir Nuriman ◽  
Dadang Sjarif Hidajat
Keyword(s):  
Distress Syndrome ◽  
Hyaline Membrane Disease ◽  
Cross Sectional Study ◽  
Type I ◽  
Cross Sectional ◽  
Hypertension In Pregnancy ◽  
Hyaline Membrane ◽  
Neonatal Respiratory Distress ◽  
Maternal Hypertension ◽  
The Relationship

There have been controversies over the eiTect of hypertension in pregnancy on the incidence of type I neonatal respiratory distress syndrome or hyaline membrane disease (HMD). We investigated the relationship between the incidence of HMD and maternal hypertension during pregnancy in 91 infants at 34 weeks gestation or less. This retrospective cross sectional study included all live born babies between May 1, 1994 and April 30, 1995 at Dr. Hasan Sadikin General Hospital, Bandung. Maternal hypertension during pregnancy was diagnosed in 38 mothers of91 infants studied. The incidence of HMD (5%) in the maternal hypertension during pregnancy group was significantly lower than the 62% in the normotensive group (p<0.01). There was a negative correlation between the occurence of HMD and hypertension during pregnancy. We conclude that the risk of developing HMD in infants born to hypertensive mothers is significantly lower than those born to normotensive mothers.

Spirituality in patients with advanced illness: The role of symptom control, resilience and social network

2016 ◽  
Vol 21 (12) ◽  
pp. 2765-2774 ◽  
Author(s):  
Miguel Fombuena ◽  
Laura Galiana ◽  
Pilar Barreto ◽  
Amparo Oliver ◽  
Antonio Pascual ◽  
...  
Keyword(s):  
Social Support ◽  
Structural Model ◽  
Symptom Control ◽  
Cross Sectional Study ◽  
Physical Symptoms ◽  
Advanced Illness ◽  
Cross Sectional ◽  
Palliative Care Teams ◽  
Symptomatic Control

In this study, we analyzed the relationships among clinical, emotional, social, and spiritual dimensions of patients with advanced illness. It was a cross-sectional study, with a sample of 108 patients in an advanced illness situation attended by palliative care teams. Statistically significant correlations were found between some dimensions of spirituality and poor symptomatic control, resiliency, and social support. In the structural model, three variables predicted spirituality: having physical symptoms as the main source of discomfort, resiliency, and social support. This work highlights the relevance of the relationships among spirituality and other aspects of the patient at the end of life.

Rostrocaudal pattern of fiber-type changes in an overloaded rat ankle extensor

1991 ◽  
Vol 71 (2) ◽  
pp. 558-564 ◽  
Author(s):  
P. F. Gardiner ◽  
B. J. Jasmin ◽  
P. Corriveau
Keyword(s):  
Fiber Type ◽  
Muscle Length ◽  
Similar Degree ◽  
Complex Nature ◽  
Type I ◽  
Fiber Types ◽  
Type Ii ◽  
Cross Sectional ◽  
Hypertrophic Response ◽  
Type I Fibers

Our aim was to quantify the overload-induced hypertrophy and conversion of fiber types (type II to I) occurring in the medial head of the gastrocnemius muscle (MG). Overload of MG was induced by a bilateral tenotomy/retraction of synergists, followed by 12–18 wk of regular treadmill locomotion (2 h of walking/running per day on 3 of 4 days). We counted all type I fibers and determined type I and II mean fiber areas in eight equidistant sections taken along the length of control and overloaded MG. Increase in muscle weights (31%), as well as in total muscle cross-sectional areas (37%) and fiber areas (type I, 57%; type II, 34%), attested to a significant hypertrophic response in overloaded MG. An increase in type I fiber composition of MG from 7.0 to 11.5% occurred as a result of overload, with the greatest and only statistically significant changes (approximately 70–100%) being found in sections taken from the most rostral 45% of the muscle length. Results of analysis of sections taken from the largest muscle girth showed that it significantly underestimated the extent of fiber conversion that occurred throughout the muscle as a whole. These data obtained on the MG, which possesses a compartmentalization of fiber types, support the notion that all fiber types respond to this model with a similar degree of hypertrophy. Also, they emphasize the complex nature of the adaptive changes that occur in these types of muscles as a result of overload.

Factors Associated with Coping Strategies among Primigravida Pregnant Women in Jakarta

2019 ◽  
Vol 9 (5) ◽  
pp. 269-275
Author(s):  
Vivi Silawati ◽  
Afrizal ◽  
Nursyirwan Effendi ◽  
Masrul ◽  
Retno Widowati ◽  
...  
Keyword(s):  
Social Support ◽  
Pregnant Women ◽  
Structural Model ◽  
Negative Impact ◽  
Controlled Trial ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Coping Ability ◽  
Perceptions And Attitudes ◽  
The Impact

Stress in women, before and during pregnancy, may result in a negative impact on the mother and fetus. In Indonesia, the anxiety rate in primigravida pregnant women when facing labor is higher than multigravida. Every pregnant woman makes an attempt to overcome or manage stress in her pregnancy in order to adapt and cope with stress. To find out the coping ability, pregnant women should find the source of stress prior to labor. This study was conducted to determine the direct and indirect factors affecting the coping ability in primigravida pregnant women. The study used a cross sectional study method through PLS analysis. The study population consisted of primigravida pregnant women, and a sample of 200 of them was taken. The measurement results of Path Coefficients and TStatistics on the influence of variables in the structural model and overall variables showed a positive and significant effect. The T statistic value of all variables was above the critical value (1.96). The results of the PLS test indicated that the empowerment and social support variables, directly and indirectly, influenced the coping abilities. Trust, personality, lifestyle, perceptions, and attitudes had impacts directly on the coping abilities. The percentage of the direct and indirect influence between variables was 97.92%. Empowerment, social support, personality, lifestyle, perceptions, and attitudes variables had an influence on the coping abilities of primigravida pregnant women. A controlled trial study should be done to see the impact of this model on reducing the risks during pregnancy.

Clinical and Microbiological Profile of Diabetic Foot Ulcers Infected With Staphylococcus aureus in a Regional General Hospital in Bahia, Brazil

2021 ◽  
pp. 153473462110507
Author(s):  
Luciano Dias Nascimento ◽  
Arthur César Pacheco Lopes ◽  
Mariana Morais Teixeira ◽  
Jade Magalhães Alves da Silva ◽  
Letícia Oliveira Silva ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Low Income ◽  
Diabetic Foot ◽  
Short Form ◽  
Type I ◽  
Life Questionnaire ◽  
Cross Sectional ◽  
Resistance Profile ◽  
Systemic Involvement ◽  
Foot Disease

It is necessary to know the resistance profile of Staphylococcus aureus to better control diabetic foot ulcer infections, to establish rational antibiotic therapy, and to avoid the development of resistant strains. This cross-sectional study evaluated the clinical parameters, virulence, and antimicrobial resistance profiles of S aureus in patients with diabetic foot disease admitted to a public hospital. S aureus strains were identified in patients with diabetes with amputation indication. Infected tissue samples were collected, microbes were isolated and identified. The microbial resistance profile was determined. Samples were also analyzed for biofilm formation and other virulence markers. The 34 individuals examined were mostly men, black, aged 60 years on average, and generally had a low income and education level. Most individuals had type 2 diabetes, and the mean time since diagnosis was 13.9 years. On an SF-36 (the Medical Outcomes Study 36-item short-form health survey) quality-of-life questionnaire, 75% of individuals obtained a score equal to 0 for physical impairment. S aureus specimens from 17 patients were isolated, corresponding to 50% of samples. Five isolates were classified as methicillin-resistant S aureus (MRSA). Molecular typing revealed that 20% of MRSA strains were SCC mec type V and 80% were type I. All isolates were sensitive to doxycycline; 61.5% were resistant to erythromycin, 38.5% to cefoxitin, 30.7% to clindamycin and ciprofloxacin, 23% to meropenem, 15.3% to gentamicin, 38.5% to oxacillin, and 7.7% (one strain) to vancomycin. Regarding biofilm production, 53% of samples were able to produce biofilms, and 84.6% had icaA and/or icaD genes . Additionally, the following enterotoxin genes were identified in the isolates: seb, sec, seg, and sei (5.9%, 5.9%, 11.8%, and 23.9%, respectively) and agr types 1 (5.9%) and 2 (11.8%). Genotypic evaluation made it possible to understand the pathogenicity of S aureus strains isolated from the diabetic foot; laboratory tests can assist in the monitoring of patients with systemic involvement.

scholarly journals Peak force and maximal shortening velocity of soleus fibers after non-weight-bearing and resistance exercise

1997 ◽  
Vol 82 (1) ◽  
pp. 189-195 ◽  
Author(s):  
Jeffrey J. Widrick ◽  
Robert H. Fitts
Keyword(s):  
Resistance Exercise ◽  
Elevated Level ◽  
Fiber Diameter ◽  
Weight Bearing ◽  
Normal Weight ◽  
Peak Force ◽  
Type I ◽  
Shortening Velocity ◽  
Adult Rats ◽  
Cross Sectional

Widrick, Jeffrey J., and Robert H. Fitts. Peak force and maximal shortening velocity of soleus fibers after non-weight-bearing and resistance exercise. J. Appl. Physiol. 82(1): 189–195, 1997.—This study examined the effectiveness of resistance exercise as a countermeasure to non-weight-bearing-induced alterations in the absolute peak force, normalized peak force (force/fiber cross-sectional area), peak stiffness, and maximal shortening velocity ( V o) of single permeabilized type I soleus muscle fibers. Adult rats were subjected to one of the following treatments: normal weight bearing (WB), non-weight bearing (NWB), or NWB with exercise treatments (NWB+Ex). The hindlimbs of the NWB and NWB+Ex rats were suspended for 14 days via tail harnesses. Four times each day, the NWB+Ex rats were removed from suspension and performed 10 climbs (∼15 cm each) up a steep grid with a 500-g mass (∼1.5 times body mass) attached to their tail harness. NWB was associated with significant reductions in type I fiber diameter, absolute force, normalized force, and stiffness. Exercise treatments during NWB attenuated the decline in fiber diameter and absolute force by almost 60% while maintaining normalized force and stiffness at WB levels. Type I fiber V oincreased by 33% with NWB and remained at this elevated level despite the exercise treatments. We conclude that in comparison to intermittent weight bearing only (J. J. Widrick, J. J. Bangart, M. Karhanek, and R. H. Fitts. J. Appl. Physiol. 80: 981–987, 1996), resistance exercise was more effective in attenuating alterations in type I soleus fiber absolute force, normalized force, and stiffness but was less effective in restoring type I fiber V oto WB levels.

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