Heat Stress and School Closings

PEDIATRICS ◽  
1984 ◽  
Vol 74 (2) ◽  
pp. 313-314
Author(s):  
Keyword(s):  
Heat Stress ◽  
Public Schools ◽  
Air Conditioning ◽  
Radiant Heat ◽  
Excessive Heat ◽  
Southern States ◽  
Teachers And Students ◽  
Different Temperatures ◽  
Hot Weather ◽  
American Society

During the last decade, the practice of opening public school in eary August has led to environmental stresses on students and teachers due to extremes of heat and humidity. In the South and Southwest, it is not unusual to have 15 to 20 days of 90°F(32.2°C) and relative humidity of 60% and higher during August. This puts a strain on teachers' and students' adaptability. In surveying eight southern states, J. W. Trieschmann (unpublished data, 1983) found that the availability of air conditioning in public schools ranged from 15% in some states to 30% in others. The smaller, poorer, usually rural school districts had the least access to cooling equipment. Thus, a large school population is at the mercy of the elements. This is especially significant because the majority of this population has been acclimatized to air-conditioned homes and stores, and extremes of heat discomfort are not well tolerated. Heat stress is defined as the overall effect of excessive heat on the human body. The important factors contributing to heat stress are air temperature, humidity, air movement, radiant heat, atmospheric pressure, physiologic factors (handicap or chronic disease), physical activity,1 and time exposure. Under normal conditions, temperature and humidity are the most important elements influencing comfort. The American Society of Heating, Refrigeration, Air Conditioning Engineers (ASHRAE) has published an index for determining heat stress based on human physiology, clothing, and standard room conditions.2 This index, called the "ET" or effective temperature (in Fahrenheit), is a measure of what hot weather feels like to the average person at different temperatures and humidities.

scholarly journals Motivation for Heat Adaption: How Perception and Exposure Affect Individual Behaviors During Hot Weather in Knoxville, Tennessee

Atmosphere ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 591 ◽  
Author(s):  
Alisa L. Hass ◽  
Kelsey N. Ellis
Keyword(s):  
Health Effects ◽  
Air Conditioning ◽  
Public Perception ◽  
Heat Exposure ◽  
Weather Conditions ◽  
Health Issues ◽  
Excessive Heat ◽  
Normal Behavior ◽  
Hot Weather ◽  
Heat Vulnerability

Heat is the deadliest meteorological hazard; however, those exposed to heat often do not feel they are in danger of heat-health effects and do not take precautions to avoid heat exposure. Socioeconomic factors, such as the high cost of running air conditioning, might prevent people from taking adaption measures. We assessed via a mixed-methods survey how residents of urban Knoxville, Tennessee, (n = 86) describe and interpret their personal vulnerability during hot weather. Thematic analyses reveal that many respondents describe uncomfortably hot weather based on its consequences, such as health effects and the need to change normal behavior, which misaligns with traditional heat-communication measures using specific weather conditions. Only 55% of those who perceived excessive heat as dangerous cited health as a cause for concern. Respondents who have experienced health issues during hot weather were more likely to perceive heat as dangerous and take actions to reduce heat exposure. Social cohesion was not a chief concern for our respondents, even though it has been connected to reducing time-delayed heat-health effects. Results support using thematic analyses, an underutilized tool in climatology research, to improve understanding of public perception of atmospheric hazards. We recommend a multi-faceted approach to addressing heat vulnerability.

PROSPEK PENGEMBANGAN PONDOK PESANTREN KECAMATAN MALANGKE KABUPATEN LUWU

2018 ◽  
Vol 12 (2) ◽  
pp. 88
Author(s):  
Yunus Yunus
Keyword(s):  
Public Schools ◽  
Religious Education ◽  
Government Regulation ◽  
Boarding School ◽  
Boarding Schools ◽  
Educational Institutions ◽  
National Education ◽  
Funding Sources ◽  
National Education System ◽  
Teachers And Students

AbstrakPola Strategi pengembangan Pondok Pesantren di Malangke, strategi pengembangan pesantren adalah cara atau srategi yang digunakan oleh wadah atau tempat guna proses suatu perubahan berencana yang memerlukan dukungan semua pihak, anatara lain Kepala, staff, guru, dan siswa dengan perubahan-perubahan itu diharapkan dapat mengembangkan dan meningkatkan lembaga pendidikan, yang memerlukan usaha jangka pendek, menengah, dan panjang guna menghadapi perubahan yang akan terjadi pada masa mendatang. Peluang dan tangan pengembangan Pesantren di Luwu Utara,  terdapat Undang-undang Nomor 20 tahun 2003 tentang Sistem Pendidikan Nasional, yang beberapa pasalnya menekankan penyelenggaraan pendidikan keagamaan, seperti, pasal 30 ayat (1) dan Peraturan Pemerintah (PP) Nomor 55 Tahun 2007 tentang Pendidikan Agama dan Pendidikan Keagamaan pada pasal 1 ayat (2) tentang Pendidikan Agama dan Pendidikan Keagamaan yang didalamnya secara tegas dikemukakan bahwa pondok pesantren menyelenggarakan pendidikan diniyah pada tingkat dasar dan menengah, tergolong dalam sub sistem pendidikan Nasional di Indonesia yang bertujuan untuk mencerdaskan bangsa, menjadikan manusia yang beriman dan bertaqwa kepada Tuhan yang Maha Esa, berakhlak mulia, sehat, berilmu, cakap, kreatif, mandiri dan menajdi warga negara yang demokratis serta bertanggung jawab. Sedangkan tantangan ada beberapa hambatan 1)Sistem kurikulum yang lebih modern, sehingga pesantren ketinggalan jauh dari sekolah umum, 2) Kurangnya anggaran dan sumber pendanaan disebabkan oleh kurang siswa. 3) adanya sebagian orang tua tidak tertarik menyekolahkan anak di sekolah Pesantren.Kata kunci:      Pengembangan, Pondok Pesantren As’addiyah.  AbstractThe pattern of the development of Islamic boarding schools in Malangke, the strategy of developing pesantren is the method or strategy used by the place or place for the process of planning changes that require the support of all parties, among others, the Head, staff, teachers and students are expected to develop and improving educational institutions, which require short, medium and long-term efforts to deal with changes that will occur in the future. Opportunities and hands for the development of Islamic boarding schools in North Luwu, there is Law Number 20 of 2003 concerning the National Education System, some of which emphasize the implementation of religious education, such as article 30 paragraph (1) and Government Regulation (PP) Number 55 of 2007 concerning Education Religion and Religious Education in Article 1 paragraph (2) concerning Religious Education and Religious Education in which it is expressly stated that Islamic boarding schools conduct early childhood education at the elementary and secondary levels, belonging to the national education sub-system in Indonesia which aims to educate the nation, make humans who have faith and devotion to the Almighty God, are noble, healthy, knowledgeable, capable, creative, independent and become a democratic and responsible citizen. While the challenges are several obstacles 1) A more modern curriculum system, so that pesantren lag far behind public schools, 2) The lack of budgets and funding sources is caused by lack of students. 3) there are some parents who are not interested in sending their children to school in Islamic boarding schools.Keywords:        Development, As'addiyah Islamic Boarding School.

Rethinking Racial Justice

2018 ◽  
Author(s):  
Andrew Valls
Keyword(s):  
Public Schools ◽  
Racial Inequality ◽  
Jim Crow ◽  
The United States ◽  
Racial Equality ◽  
Controversial Issues ◽  
Racial Justice ◽  
Black Institutions ◽  
American Society ◽  
Racial Lines

American society continues to be characterized by deep racial inequality that is a legacy of slavery and Jim Crow. What does justice demand in response? In this book, Andrew Valls argues that justice demands quite a lot—the United States has yet to fully reckon with its racial past, or to confront its ongoing legacies. Valls argues that liberal values and principles have far-reaching implications in the context of the deep injustices along racial lines in American society. In successive chapters, the book takes on such controversial issues as reparations, memorialization, the fate of black institutions and communities, affirmative action, residential segregation, the relation between racial inequality and the criminal justice system, and the intersection of race and public schools. In all of these contexts, Valls argues that liberal values of liberty and equality require profound changes in public policy and institutional arrangements in order to advance the cause of racial equality. Racial inequality will not go away on its own, Valls argues, and past and present injustices create an obligation to address it. But we must rethink some of the fundamental assumptions that shape mainstream approaches to the problem, particularly those that rely on integration as the primary route to racial equality.

scholarly journals GERMINATION AND VIGOUR IN SEEDS OF THE COWPEA IN RESPONSE TO SALT AND HEAT STRESS

2019 ◽  
Vol 32 (1) ◽  
pp. 143-151 ◽  
Author(s):  
Luma Rayane de Lima Nunes ◽  
Paloma Rayane Pinheiro ◽  
Charles Lobo Pinheiro ◽  
Kelly Andressa Peres Lima ◽  
Alek Sandro Dutra
Keyword(s):  
Salt Stress ◽  
Heat Stress ◽  
High Temperature ◽  
Low Temperature ◽  
Vigna Unguiculata ◽  
Salt Concentration ◽  
Dry Weight ◽  
Germination Percentage ◽  
Different Types ◽  
Different Temperatures

ABSTRACT Salinity is prejudicial to plant development, causing different types of damage to species, or even between genotypes of the same species, with the effects being aggravated when combined with other types of stress, such as heat stress. The aim of this study was to evaluate the tolerance of cowpea genotypes (Vigna unguiculata L. Walp.) to salt stress at different temperatures. Seeds of the Pujante, Epace 10 and Marataoã genotypes were placed on paper rolls (Germitest®) moistened with different salt concentrations of 0.0 (control), 1.5, 3.0, 4.5 and 6.0 dS m-1, and placed in a germination chamber (BOD) at temperatures of 20, 25, 30 and 35°C. The experiment was conducted in a completely randomised design, in a 3 × 4 × 5 scheme of subdivided plots, with four replications per treatment. The variables under analysis were germination percentage, first germination count, shoot and root length, and total seedling dry weight. At temperatures of 30 and 35°C, increases in the salt concentration were more damaging to germination in the Epace 10 and Pujante genotypes, while for the Marataoã genotype, damage occurred at the temperature of 20°C. At 25°C, germination and vigour in the genotypes were higher, with the Pujante genotype proving to be more tolerant to salt stress, whereas Epace 10 and Marataoã were more tolerant to high temperatures. Germination in the cowpea genotypes was more sensitive to salt stress when subjected to heat stress caused by the low temperature of 20°C or high temperature of 35°C.

scholarly journals Study on IBS Cooling Panel Wall System with Difference Types of Cooling Mediums

2020 ◽  
Vol 11 (2) ◽  
Author(s):  
Eny Nor Syahira Mohamad Hashim ◽  
◽  
Norhafizah Salleh ◽  
Noor Azlina Abdul Hamid ◽  
◽  
...  
Keyword(s):  
Relative Humidity ◽  
Air Conditioning ◽  
Ventilation System ◽  
Target Strength ◽  
Outdoor Temperature ◽  
Design Concepts ◽  
Building Ventilation ◽  
American Society ◽  
Wall System ◽  
Indoor And Outdoor

This paper proposes a cooling house system that can promote thermal comfort in buildings without air-conditioning. The cooling panel wall forms a part of an Integrated Building System (IBS), and is essentially made of tubes filled with either water or glycerin as the coolant. Target strength for the panel wall was designed based on the Malaysian Standard (MS) while the building ventilation system followed the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) standard. The results are reported based on indoor and outdoor temperature difference together with relative humidity to identify the best performing house model and also coolant. The outcome of this research is expected to add value to design concepts with a better promotion of air flow and circulation in the building, without over-usage of natural resources and higher building cost to achieve the same objective.

scholarly journals The Myth of Independence as Better: Transforming Curriculum Through Disability Studies and Decoloniality

2020 ◽  
Vol 9 (5) ◽  
pp. 96-121
Author(s):  
Maria Karmiris
Keyword(s):  
Public Schools ◽  
Public School ◽  
Disability Studies ◽  
Teaching And Learning ◽  
School Teacher ◽  
Postcolonial Studies ◽  
Independent Learning ◽  
School Practices ◽  
The Gaze ◽  
Teachers And Students

By situating this article within disability studies, decolonial studies and postcolonial studies, my purpose is to explore orientations towards independence within public school practices and show how this serves to reinforce hierarchies of exclusion. As feminist, queer and postcolonial scholar Ahmed (2006, p. 3) contends, “Orientations shape not only how we inhabit, but how we apprehend this world of shared inhabitance as well as ‘who’ or ‘what’ we direct our energy toward” (Ahmed, 2006, p. 3). I wonder how the policies and practices that I am oriented towards as a public school teacher limit the possibilities of encountering teaching and learning as a mode of reckoning and apprehending “this world of shared inhabitance?” I also wonder how remaining oriented towards independence as the goal of learning simultaneously sustains an adherence to colonial western logics under the current neoliberal ethos. Through Ahmed’s provocation I explore how the gaze of both teachers and students in public schools remains oriented towards independent learning in a manner that sustains conditions of exclusion, marginalization and oppression.

scholarly journals Calculation of Water Evaporative Cooling Systems in Animal Husbandry

2020 ◽  
pp. 35-38
Author(s):  
N.N. Novikov ◽  
Keyword(s):  
Air Conditioning ◽  
Evaporation Rate ◽  
Evaporative Cooling ◽  
Animal Husbandry ◽  
Water Evaporation ◽  
Cooling Systems ◽  
Temperature And Humidity ◽  
Hot Weather ◽  
Livestock Building ◽  
Air Exchange

A method for calculating the parameters of the microclimate in a livestock building using water-evaporative air conditioning is described. It makes it possible to choose a rational temperature and humidity conditions for a room in hot weather, calculate the required air exchange, water evaporation rate and select the appropriate equipment.

Radiant Interchange Between Circular Disks Having Arbitrarily Different Temperatures

1961 ◽  
Vol 83 (4) ◽  
pp. 494-502 ◽  
Author(s):  
E. M. Sparrow ◽  
J. L. Gregg
Keyword(s):  
Heat Transfer ◽  
Numerical Solutions ◽  
Local Heat Transfer ◽  
Disk Surface ◽  
Radiant Heat ◽  
Local Heat ◽  
Radiant Heat Transfer ◽  
Disk Radius ◽  
Integral Equation Formulation ◽  
Different Temperatures

The problem of radiant heat transfer between parallel disks has been analyzed by generalizing the standard gray-body enclosure theory. In particular, the assumption that the radiant flux leaving a surface and the local heat flux are uniformly distributed over the surface has been lifted by an integral equation formulation. It has been shown that the general problem of disks at arbitrarily different temperatures can be conveniently broken down into two subproblems, each of which can be solved independently of the temperature level. Numerical solutions of the governing integral equations have been carried out for spacing ratios h/R (h = spacing, R = disk radius) ranging from 5.0 to 0.05 and for emissivities ranging from 0.1 to 0.9. Local heat-transfer results have been presented which, depending on spacing and emissivity, display marked variations over the disk surface. Over-all heat-transfer results have been calculated and compared with the predictions of the standard simplified enclosure theory. These predictions of the simplified theory were found to be unexpectedly good, especially in view of the large surface variations of the local heat transfer.

The Analysis of Modifications in Cooling Systems for High-Performance Data Centers. A Case Study

2017 ◽  
Author(s):  
Artur Rusowicz ◽  
Adam Ruciński ◽  
Rafał Laskowski
Keyword(s):  
Air Conditioning ◽  
High Performance ◽  
Energy Savings ◽  
Cooling System ◽  
Capital Expenditure ◽  
Cooling Power ◽  
Power Demand ◽  
Excessive Heat ◽  
Refrigeration Equipment ◽  
Payback Time

One of main issues concerning server room operation is appropriate cooling of electronic modules to prevent excessive heat generation resulting in their damage. Since high cooling powers are required, precision air conditioning systems are used that are specially designed for cooling server and equipment rooms, server cabinets, etc. These devices require very large energy supplies. The paper proposes an upgrade of a cooling system for three server rooms in which refrigeration equipment with a cooling power of 1.873 MW is installed. The average actual cooling power demand is 890 kW, and some units work as a standby. Thir-eight direct-evaporation air-conditioning cabinets are installed. The refrigerant is R407C. The devices have been operated for 14 years; therefore, the refrigeration equipment should be replaced with modern units. The paper compares three approaches: replacing the units with similar ones based on newer technology, introducing contained aisle configurations of rack cabinets and units based on newer technology with additional EconoPhase modules. The application of free cooling was not analyzed since mounting additional heat exchangers was impossible (due to the lack of space and limited roof loading capacity). The paper provides capital and operating costs of the solutions. The introduction of up-to-date units and replacing condensers resulted in lowering the electric power demand by 16%. The simple payback time (SPBT) of this solution is 18.8 years. The energy savings achieved through the second solution (contained aisle configurations of rack cabinets) amount to 37.8%, with SPBT equal to 8.38 years. Variant III, consisting in using modern units with additional EconoPhase modules, significantly improves energy savings (48.3%) but it requires large capital expenditure, with simple payback time of 12.1 years.

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