scholarly journals Private Schools as Drivers of Social Segregation: Why Private Schools Should Be Regulated

2021 ◽  
Vol 4 (11) ◽  
Author(s):  
Rita Nikolai ◽  
Marcel Helbig
Keyword(s):  
International Comparison ◽  
Private Schools ◽  
Social Segregation ◽  
And Control

In international comparison, the share of pupils enrolled in private schools is expanding and the access to private schools is socially unequal. There is a need for the regulation and control of private schools. Focusing on Germany, this contribution discusses how such a regulation might look like without endangering the freedom for the foundation and pedagogical operation of private schools.

scholarly journals Capacidades humanas centrales en los jornaleros agrícolas migrantes de México

2020 ◽  
Vol 19 (2) ◽  
pp. 71
Author(s):  
Francisco Pérez-Soto ◽  
Pablo Emilio Escamilla-García ◽  
Esther Figueroa-Hernández ◽  
Rebeca Pérez-Figueroa
Keyword(s):  
Quality Of Life ◽  
Human Development ◽  
Practical Reason ◽  
Farm Workers ◽  
Migrant Farm Workers ◽  
Social Segregation ◽  
General Welfare ◽  
Migrant Farm ◽  
And Control

This paper reports an analysis of the behavior and perception of migrant agricultural workers in relation to central human capacities. Seven dimensions of analysis were aligned to the human central capabilities proposed by Nussbaum. The results showed that physical health and emotions infringe human development of workers. The capabilities of practical reason, affiliation and control over the environment showed discrimination and social segregation. The results provide evidence on the quality of life and general welfare situation of migrant farm workers from a perspective for human development.

Estimating Parents’ Valuations of Class Size Reductions Using Attrition in the Tennessee STAR Experiment

2014 ◽  
Vol 14 (3) ◽  
pp. 755-790
Author(s):  
Chris Rohlfs ◽  
Melanie Zilora
Keyword(s):  
Private Schools ◽  
Student Teacher ◽  
Class Size ◽  
Control Groups ◽  
Attrition Rates ◽  
Estimation Strategy ◽  
Cash Payment ◽  
Star Experiment ◽  
And Control ◽  
Hedonic Estimation

Abstract This study estimates parents’ valuations of small classes by examining the effects of randomly assigned class type on the decision to remove one’s child from the Tennessee Student Teacher Achievement Ratio experiment, using a new hedonic estimation strategy that estimates the cash payment that would be required to generate the same difference in attrition rates as was observed between treatment and control groups. In 2010 dollars, our preferred estimates indicate that parents on the margin of sending their children to private schools valued small classes at $2,000–$18,000 per year relative to a cost of $3,000 per student year.

scholarly journals Editorial: Geographical insights of the corporate governance research

2021 ◽  
Vol 18 (4) ◽  
pp. 4-6
Author(s):  
Alexander Kostyuk
Keyword(s):  
Corporate Governance ◽  
Stock Market ◽  
Mergers And Acquisitions ◽  
Executive Compensation ◽  
Board Of Directors ◽  
International Comparison ◽  
Corporate Ownership ◽  
Recent Issue ◽  
The Board Of Directors ◽  
And Control

The recent issue of Corporate Ownership and Control journal contains both empirical and review papers describing the wide variety of corporate governance issues from the board of directors and executive compensation to mergers and acquisitions, stock market and institutional investors. The geographical representation of the papers provides an excellent opportunity for international comparison.

Control of Metal Alloy Oxidation with Electric Fields

1973 ◽  
Vol 31 ◽  
pp. 164-165
Author(s):  
R. R. Dils ◽  
P. S. Follansbee
Keyword(s):  
Electric Fields ◽  
Oxidation Process ◽  
Base Alloy ◽  
Oxide Surface ◽  
Platinum Electrodes ◽  
Insulating Layer ◽  
Iron Base Alloy ◽  
Alloy Oxidation ◽  
Aluminum Oxide Layer ◽  
And Control

Electric fields have been applied across oxides growing on a high temperature alloy and control of the oxidation of the material has been demonstrated. At present, three-fold increases in the oxidation rate have been measured in accelerating fields and the oxidation process has been completely stopped in a retarding field.The experiments have been conducted with an iron-base alloy, Pe 25Cr 5A1 0.1Y, although, in principle, any alloy capable of forming an adherent aluminum oxide layer during oxidation can be used. A specimen is polished and oxidized to produce a thin, uniform insulating layer on one surface. Three platinum electrodes are sputtered on the oxide surface and the specimen is reoxidized.

Evidence for a Blood Ganglion Barrier in the Superior Cervical Ganglion of the Rat

1982 ◽  
Vol 40 ◽  
pp. 204-204
Author(s):  
D. M. DePace
Keyword(s):  
Blood Vessels ◽  
Superior Cervical Ganglion ◽  
Peripheral Nerves ◽  
Time Schedule ◽  
Transmission Electron ◽  
Cervical Ganglion ◽  
The Central Nervous System ◽  
Cervical Ganglia ◽  
Capillary Circulation ◽  
And Control

The majority of blood vessels in the superior cervical ganglion possess a continuous endothelium with tight junctions. These same features have been associated with the blood brain barrier of the central nervous system and peripheral nerves. These vessels may perform a barrier function between the capillary circulation and the superior cervical ganglion. The permeability of the blood vessels in the superior cervical ganglion of the rat was tested by intravenous injection of horseradish peroxidase (HRP). Three experimental groups of four animals each were given intravenous HRP (Sigma Type II) in a dosage of.08 to.15 mg/gm body weight in.5 ml of.85% saline. The animals were sacrificed at five, ten or 15 minutes following administration of the tracer. Superior cervical ganglia were quickly removed and fixed by immersion in 2.5% glutaraldehyde in Sorenson's.1M phosphate buffer, pH 7.4. Three control animals received,5ml of saline without HRP. These were sacrificed on the same time schedule. Tissues from experimental and control animals were reacted for peroxidase activity and then processed for routine transmission electron microscopy.

Effects of renovascular hypertension on rat adrenal zona glomerulosa

1978 ◽  
Vol 36 (2) ◽  
pp. 582-583
Author(s):  
G. Mazzocchi ◽  
P. Rebuffat ◽  
C. Robba ◽  
P. Vassanelli ◽  
G. G. Nussdorfer
Keyword(s):  
Renovascular Hypertension ◽  
Left Kidney ◽  
Renin Angiotensin System ◽  
Plasma Renin ◽  
Zona Glomerulosa ◽  
Ultrastructural Changes ◽  
Albino Rats ◽  
Left Renal Artery ◽  
Angiotensin System ◽  
And Control

It is well known that the rat adrenal zona glomerulosa steroidogenic activity is controlled by the renin-angiotensin system. The ultrastructural changes in the rat zona glomerulosa cells induced by renovascular hypertension were described previously, but as far as we are aware no correlated biochemical and morphometric investigations were performed.Twenty adult male albino rats were divided into 2 experimental groups. One group was subjected to restriction of blood flow to the left kidney by the application of a silver clip about the left renal artery. The other group was sham-operated and served as a control. Renovascular hypertension developed in about 10 days: sistolic blood pressure averaged 165 ± 6. 4 mmHg, whereas it was about 110 ± 3. 8 mmHg in the control animals. The hypertensive and control rats were sacrificed 20 days after the operation. The blood was collected and plasma renin activity was determined by radioimmunological methods. The aldosterone concentration was radioimmunologically assayed both in the plasma and in the homogenate of the left capsular adrenal gland.

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