scholarly journals El aprendizaje científico en el niño de preescolar: una experiencia dinámica

2020 ◽  
pp. 19-30
Author(s):  
Ma. Dolores Balderas-Mireles ◽  
Ma. Leticia Almaraz-Olguín ◽  
Irma Ramírez-Vaquera ◽  
Kathia María Antonieta Balderas-Mireles
Keyword(s):  
Science Teaching ◽  
Preschool Teachers ◽  
El Nino ◽  
Natural World ◽  
Qualitative Approach ◽  
Classroom Experience ◽  
Video Recordings ◽  
And Control ◽  
Change Attitude ◽  
Do So

The research was carried out through the systematization and control of a classroom experience from a qualitative approach with the implementation of techniques such as observation, recording, video recordings and photographs, the result of which would make preschool teachers aware of the importance from the field of exploration and understanding of the natural world, the preponderance of fostering in the child from three years of age skills such as observation, curiosity, inquiry, experimentation and the formulation of hypotheses, which requires the preparation of the teacher and a change attitude towards science teaching, as well as the commitment of preschool institutions to promote work in this field; The result of the intervention proposal impacted on skills beyond those considered, as the child advances as the conditions to do so are generated and his thought expands until he can argue based on what he knows and observes in relation to experiential experiences that the teacher generates for it.

Electron Microscopy of a Herpesvirus Isolated from Marek's Disease in Duck and Chicken Embryo Fibroblast Cultures

1968 ◽  
Vol 26 ◽  
pp. 222-223 ◽  
Author(s):  
Keyvan Nazerian
Keyword(s):  
Inclusion Bodies ◽  
Chicken Embryo Fibroblast ◽  
Marek's Disease ◽  
Marek’S Disease ◽  
Duck Embryo Fibroblast ◽  
Multinucleated Cells ◽  
Viral Particles ◽  
Infected Cells ◽  
And Control ◽  
Do So

A herpes-like virus has been isolated from duck embryo fibroblast (DEF) cultures inoculated with blood from Marek's disease (MD) infected birds. Cultures which contained this virus produced MD in susceptible chickens while virus negative cultures and control cultures failed to do so. This and other circumstantial evidence including similarities in properties of the virus and the MD agent implicate this virus in the etiology of MD.Histochemical studies demonstrated the presence of DNA-staining intranuclear inclusion bodies in polykarocytes in infected cultures. Distinct nucleo-plasmic aggregates were also seen in sections of similar multinucleated cells examined with the electron microscope. These aggregates are probably the same as the inclusion bodies seen with the light microscope. Naked viral particles were observed in the nucleus of infected cells within or on the edges of the nucleoplasmic aggregates. These particles measured 95-100mμ, in diameter and rarely escaped into the cytoplasm or nuclear vesicles by budding through the nuclear membrane (Fig. 1). The enveloped particles (Fig. 2) formed in this manner measured 150-170mμ in diameter and always had a densely stained nucleoid. The virus in supernatant fluids consisted of naked capsids with 162 hollow, cylindrical capsomeres (Fig. 3). Enveloped particles were not seen in such preparations.

Effects of Time and Perceptual Orientation on Actors' and Observers' Attributions

1984 ◽  
Vol 58 (1) ◽  
pp. 23-30
Author(s):  
Donald S. Martin ◽  
Ming-Shiunn Huang
Keyword(s):  
Video Recording ◽  
Control Group ◽  
Control Groups ◽  
Video Recordings ◽  
Before And After ◽  
Perceptual Orientation ◽  
Initial Difference ◽  
Variety Show ◽  
And Control ◽  
Unrelated Variety

The actor/observer effect was examined by Storms in a 1973 study which manipulated perceptual orientation using video recordings. Storms' study was complex and some of his results equivocal. The present study attempted to recreate the perceptual reorientation effect using a simplified experimental design and an initial difference between actors and observers which was the reverse of the original effect. Female undergraduates performed a motor co-ordination task as actors while watched by observers. Each person made attributions for the actor's behaviour before and after watching a video recording of the performance. For a control group the video recording was of an unrelated variety show excerpt. Actors' initial attributions were less situational than observers'. Both actors and observers became more situational after the video replay but this effect occurred in both experimental and control groups. It was suggested the passage of time between first and second recording of attributions could account for the findings and care should be taken when interpreting Storms' (1973) study and others which did not adequately control for temporal effects.

scholarly journals PSV-6 Effects of chilled drinking water and cooled floor pads on behavior of lactating sows under heat stress

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 153-154
Author(s):  
Yuzhi Li ◽  
Yunhui Zhu ◽  
Michael Reese ◽  
Eric Buchanan ◽  
Lee Johnston
Keyword(s):  
Drinking Water ◽  
Heat Stress ◽  
Time Budget ◽  
Calculated Data ◽  
Video Recordings ◽  
Significant Difference ◽  
Lactating Sows ◽  
Effect Of Treatment ◽  
Drinking Frequency ◽  
And Control

Abstract This study was conducted to evaluate effects of chilled drinking water and cooled floor pads on behavior of lactating sows under heat stress. Sows were housed in individual farrowing stalls in two rooms with temperatures being controlled at 29.4°C (0700h to 1900h) and 23.9°C (1900h to 0700h). Sows in one room (treatment), but not in the other room (control) were provided with chilled drinking water (13 to 15°C) and cooled floor pads (15 to 18°C). Behavior of sows (n=15 sows/treatment; parity=1 to 6) was video recorded during farrowing, and d 1, 3, 7, 14, and 21 after farrowing. Videos were viewed to register birth time of each piglet. Number of drinking bouts and duration of each bout were registered for 2 h (1530h to 1730h) each day after farrowing. Postures (lying laterally, lying ventrally, sitting, and standing) were recorded by scanning video-recordings at 5-min intervals for 24 h each day after farrowing, and time budget for each posture was calculated. Data were analyzed using the Glimmix Procedure of SAS. No effect of treatment was detected for litter size born, farrowing duration, or birth interval (P >0.33; Table 1). Neither frequency nor duration of drinking bouts was affected by treatment (P >0.27). No significant difference was observed in time budget for each posture (P >0.46) between treatment and control groups. As lactation progressed, sows increased drinking frequency (from 1.2 drinks/2h on d 1 to 4.9 drinks/2h on d 21; P< 0.001) and time spent lying ventrally (8% to 14%; P< 0.0001), standing (4% to 10%; P< 0.001), and sitting (2% to 4%; P< 0.0001), and decreased time spent lying laterally (86% to 67%; P< 0.0001) in both control and treatment rooms. These results indicate that chilled drinking water and cooled floor pads did not affect behavior of sows during farrowing and lactation in the current study.

scholarly journals Relationships between the Rider’s Pelvic Mobility and Balance on a Gymnastic Ball with Equestrian Skills and Effects on Horse Welfare

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 453
Author(s):  
Mette Uldahl ◽  
Janne W. Christensen ◽  
Hilary M. Clayton
Keyword(s):  
Heart Rate ◽  
Negative Correlation ◽  
Core Stability ◽  
Static Balancing ◽  
Conflict Behaviors ◽  
Video Recordings ◽  
Highly Correlated ◽  
And Control ◽  
Energetic Performance ◽  
Working Heart

Riders need core stability to follow and guide the horse’s movements and avoid giving unintended or conflicting signals. This study evaluated the rider’s performance of exercises on a gymnastic ball with on-horse performance and indicators of stress in the horse. Twenty experienced riders were scored performing three exercises on a gymnastic ball and for quality and harmony when riding based on evaluation of video recordings in which conflict behaviours were evident. The horse’s heart rate and number of conflict behaviors during the riding test and cortisol levels after completion of the test were measured. The rider’s ability to roll the pelvis from side-to-side on a gymnastic ball was highly correlated with ability to circle the pelvis on the ball and with quality and harmony during riding. However, pelvic roll and riding quality and harmony showed a trend toward a negative correlation with balancing skills on the ball. It appears that the ability to actively move the pelvis is more relevant to equestrian performance than static balancing skill. Horses ridden by riders with better pelvic mobility and control showed significantly fewer conflict behaviors. On the contrary, high scores for balancing on the gymnastic ball were negatively correlated with the horses’ working heart rates, suggesting a less energetic performance. Pelvic control and mobility may be predictive for equestrian skills and riding harmony.

Black Atlanta: An Ecosocial Approach to Narratives of the Atlanta Child Murders

PMLA ◽  
2007 ◽  
Vol 122 (1) ◽  
pp. 194-209 ◽  
Author(s):  
Eric Gary Anderson
Keyword(s):  
Natural World ◽  
Built Environments ◽  
Toni Cade Bambara ◽  
Critical Attention ◽  
Do So

Moving beyond ecocriticism, this essay argues that an ecosocial reading of narratives of the Atlanta child murders (1979–81) is better able to examine the sometimes functional, sometimes broken interactions between sociocultural circumstances and particular urban ecologies. Far from latching onto an idealized, utopian sense of a restorative natural world, the ecosocial approach introduced here focuses critical attention on the traumatized and traumatic social and cultural histories that play out in particular natural as well as built environments. In various ways, child-murders narratives by Toni Cade Bambara, Tayari Jones, and others bear the conflicting burdens of memory and forgetting, of old and new and never–changing and ever–changing Souths. They do so in large part by acknowledging ecosocial dysfunctions as one way of moving, however provisionally and problematically, toward a more grounded, more communal idea and practice of interrelatedness.

After the Ivory Tower: Gender, Commodification and the ‘Academic’

1997 ◽  
Vol 55 (1) ◽  
pp. 130-142 ◽  
Author(s):  
Joanna de Groot
Keyword(s):  
Job Insecurity ◽  
Historical Context ◽  
Ivory Tower ◽  
Academic Identities ◽  
Loss Of Autonomy ◽  
External Power ◽  
Key Features ◽  
And Control ◽  
Radical Transformation ◽  
Do So

This piece uses a feminist approach to explore various aspects of ‘commodification’ in the lives and work of those teaching and researching in UK universities, and in particular its gender dimensions. After setting a historical context for the radical transformation of UK universities during the 1980s, it considers how this transformation was experienced by academics in terms of alienation, anxiety and accountability. Key features of that experience are loss of autonomy and control to the external power of competition and managerialism, insecurity and casualization in employment, and exposure to increasing judgemental scrutiny. For women academics job insecurity and discrimination continue to be disproportionately important, although some of the challenges to old established academic convention and practice have opened up real possibilities to progress more pro-women agendas. In the future they will confront quite depressing developments in the reconstruction of academic identities and labour, but have the legacy of the gains/insights of feminist analysis and politics over the last twenty years with which to do so.

Transition and the Pitfalls of Nondemocratic Institutions: A review of Constitutionality in Ethiopia

2021 ◽  
Vol 2021 (1) ◽  
pp. 67-87
Author(s):  
Tadesse Melaku
Keyword(s):  
Case Analysis ◽  
Democratic Governance ◽  
Institutional Reforms ◽  
Constitutional Review ◽  
The Past ◽  
Government Power ◽  
Review Mechanism ◽  
And Control ◽  
Regional Elections ◽  
Do So

Ethiopia has undertaken important political reforms after the fall of authoritarianism in 2018. This article examines the performance of Ethiopia’s constitutional review mechanism amid the ongoing political and institutional reforms in the country. The study focuses on the process and merit of the constitutional ruling to delay the 2020 national and regional elections because of the coronavirus pandemic, thereby extending the government’s tenure. It further unravels the challenges posed by nondemocratic institutions of the past regime in navigating the transition. In doing so, this study draws on legal, documentary and case analysis, and a literature review. While the mandate extension comes as no surprise, the reasoning of the decision to do so was disappointing for many, dashing the hope and sense of a constitutional moment that accompanied the highly publicised constitutional hearing process in June 2020. The judgment reveals an endemic deficiency of the institutional system. Thus, it is imperative for Ethiopia to establish an independent constitutional umpire to check and control the exercise of government power and support the transition to multiparty democratic governance in the country.

The moral construction of worry about radiation exposure: Emotion, knowledge, and tests

2017 ◽  
Vol 28 (6) ◽  
pp. 635-656 ◽  
Author(s):  
Aug Nishizaka
Keyword(s):  
Radiation Exposure ◽  
Conversation Analysis ◽  
Internal Exposure ◽  
Test Results ◽  
Communication Tool ◽  
Work Related ◽  
Video Recordings ◽  
Moral Construction ◽  
Fukushima Disaster ◽  
Do So

In the analysis of video recordings of the interactions between a doctor and the examinees following internal radiation exposure tests at a hospital in Fukushima Prefecture, I explore how the participants address one of the most serious consequences of the Fukushima disaster, that is, their concerns about radioactive materials. To do so, this study employs conversation analysis. The doctor’s presentation of the test results provides the examinees with a place to express relief and also makes relevant the justification work related to the expression of relief. In conclusion, I consider how the internal exposure tests also function as a communication tool in the context in which residents from affected areas face potential difficulties in expressing their worry about radiation.

scholarly journals Perspective Of Stakeholders On The Sustainability Of Tuberkulosis Program

2020 ◽  
Vol 9 (1) ◽  
pp. 224-240
Author(s):  
Indasah Indasah ◽  
Dedi Saifulah ◽  
Anita Restu Korbaffo
Keyword(s):  
Prevention And Control ◽  
Case Study Research ◽  
Qualitative Approach ◽  
Service Program ◽  
Tb Control ◽  
Descriptive Research ◽  
Tb Treatment ◽  
Complete Treatment ◽  
And Control

This research is a type of descriptive research using a qualitative approach design using a case study research design. Funding for the TB program in Pasuruan Regency was sourced from the APBD and also Health Operational Assistance sourced from the Special Allocation Fund decreased. The budget for TB prevention prevention programs is absorbed entirely But the performance of achieving the discovery targets is still not significant. Still not found the whole case, complete treatment has not been maximized, some even DO. TB control activities allocated for TB prevention and control services appear to be relatively small compared to the TB treatment budget. Based on all the challenges faced, a strategy was formulated to eliminate TB within the next 5 years by strengthening the leadership of a quality TB service program with a sustainable program across stakeholders

scholarly journals Knowledge, Performance, and Attitude Towards Mask Use to Prevent and Control COVID-19 Outbreak Among a Group of Iranian People: A Cross-sectional Study

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Abdolhamid Tajvar ◽  
Teamur Aghamolaei ◽  
Shokrollah Mohseni ◽  
Anahita Fakherpour ◽  
Zabihollah Damiri ◽  
...  
Keyword(s):  
Cross Sectional Study ◽  
Online Questionnaire ◽  
Cross Sectional ◽  
Educational Levels ◽  
Final Score ◽  
Knowledge And Attitude ◽  
And Performance ◽  
And Control ◽  
Do So ◽  
Good Attitude

Background: Due to the pandemic, COVID-19 cases and deaths are increasing unexpectedly and precipitately. More importantly, asymptomatic carriers could infect healthy people through sneezing, coughing, and talking. Therefore, mask usage is required to prevent and control COVID-19. Objectives: This study was aimed at examining the knowledge, attitude, and performance levels (KAP) of the Iranian population regarding mask usage to prevent and control the COVID-19 outbreak during a one-month period from early April to early May 2020. Methods: A researcher-made, validated, and reliable questionnaire consisting of 30 questions on knowledge, attitude, and performance regarding mask usage was utilized. Data collection was performed through the online method. To do so, the online questionnaire link was provided for the participants via social networks. The correct and wrong answers were scored 1 and 0 points, respectively. The final score of each dimension was calculated and classified as 0 - 50% (low), 51 - 75% (moderate), and 75% > (good). Results: A total of 1581 participants took part in the study. Although the participants had good attitude (74%) and performance (70.80%), but only 13.70% of them had good knowledge regarding mask usage. Also, significant differences were found between the participants’ knowledge and higher educational levels (P < 0.001). There were significant associations between the participants’ age, gender, educational level, and job and their knowledge and attitude levels (P < 0.05). Besides, female participants had higher performance scores than did male participants (P < 0.001). The participants with governmental jobs had significantly higher performance than unemployed ones (P < 0.001). Conclusions: The participants obtained low KAP scores; therefore, it is required to train and inform the society and enhance their KAP levels via social media regarding the importance of mask usage, including proper donning, doffing, cleaning, disinfection, and safely and hygienic disposal procedures of masks to prevent and control COVID-19.

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