scholarly journals Declining Country-Level Food Self-Sufficiency Suggests Future Food Insecurities

2019 ◽  
Vol 4 (3) ◽  
Author(s):  
John R. Schramski ◽  
C. Brock Woodson ◽  
Garrett Steck ◽  
Dylan Munn ◽  
James H. Brown
Keyword(s):  
Country Level ◽  
Self Sufficiency

scholarly journals Potential Influence of Climate Change on Grain Self‐Sufficiency at the Country Level Considering Adaptation Measures

2019 ◽  
Vol 7 (10) ◽  
pp. 1152-1166 ◽  
Author(s):  
Taoyuan Wei ◽  
Tianyi Zhang ◽  
Xuefeng Cui ◽  
Solveig Glomsrød ◽  
Yu Liu
Keyword(s):  
Climate Change ◽  
Potential Influence ◽  
Adaptation Measures ◽  
Country Level ◽  
Self Sufficiency

scholarly journals Correction to: Declining Country‑Level Food Self‑Sufficiency Suggests Future Food Insecurities

2019 ◽  
Vol 4 (3) ◽  
Author(s):  
John R. Schramski ◽  
C. Brock Woodson ◽  
Garrett Steck ◽  
Dylan Munn ◽  
James H. Brown
Keyword(s):  
Country Level ◽  
Self Sufficiency

scholarly journals Effects of a Tariff Reduction on Grain Self-Sufficiency: Evidence from Country-Level Panel Data

2017 ◽  
Vol 9 (10) ◽  
pp. 1838 ◽  
Author(s):  
Younghyeon Jeon ◽  
Byeong-il Ahn
Keyword(s):  
Panel Data ◽  
Tariff Reduction ◽  
Country Level ◽  
Self Sufficiency

Three Paradoxical Effects on Academic Self-Concept Across Countries, Schools, and Students

2019 ◽  
Vol 24 (3) ◽  
pp. 231-242 ◽  
Author(s):  
Herbert W. Marsh ◽  
Philip D. Parker ◽  
Reinhard Pekrun
Keyword(s):  
International Student ◽  
Student Assessment ◽  
Cross Cultural ◽  
Frame Of Reference ◽  
School Level ◽  
Self Concept ◽  
Positive Effects ◽  
International Student Assessment ◽  
Country Level ◽  
Starting School

Abstract. We simultaneously resolve three paradoxes in academic self-concept research with a single unifying meta-theoretical model based on frame-of-reference effects across 68 countries, 18,292 schools, and 485,490 15-year-old students. Paradoxically, but consistent with predictions, effects on math self-concepts were negative for: • being from countries where country-average achievement was high; explaining the paradoxical cross-cultural self-concept effect; • attending schools where school-average achievement was high; demonstrating big-fish-little-pond-effects (BFLPE) that generalized over 68 countries, Organisation for Economic Co-operation and Development (OECD)/non-OECD countries, high/low achieving schools, and high/low achieving students; • year-in-school relative to age; unifying different research literatures for associated negative effects for starting school at a younger age and acceleration/skipping grades, and positive effects for starting school at an older age (“academic red shirting”) and, paradoxically, even for repeating a grade. Contextual effects matter, resulting in significant and meaningful effects on self-beliefs, not only at the student (year in school) and local school level (BFLPE), but remarkably even at the macro-contextual country-level. Finally, we juxtapose cross-cultural generalizability based on Programme for International Student Assessment (PISA) data used here with generalizability based on meta-analyses, arguing that although the two approaches are similar in many ways, the generalizability shown here is stronger in terms of support for the universality of the frame-of-reference effects.

The Self-Sufficiency Trust of Illinois

1989 ◽  
Author(s):  
Paul L. Medlin
Keyword(s):  
The Self ◽  
Self Sufficiency

CONCEPTUAL POSITIONS OF MODERNIZATION OF EXISTING INEFFICIENT DISTRICT HEATING SYSTEMS

2017 ◽  
pp. 11-21
Author(s):  
Ye.Ye. Nikitin
Keyword(s):  
Energy Efficient ◽  
Mutual Influence ◽  
District Heating ◽  
Current Status ◽  
Cognitive Approach ◽  
Heating Systems ◽  
Energy Management Systems ◽  
Current State ◽  
Self Sufficiency ◽  
District Heating Systems

The current situation in the sphere of district heating is analysed on the basis of use of the cognitive approach. The presence of closed chains of cause-effect relationships of negative factors and conflicts of target settings of the subjects in the field of district heating is shown. The conceptual model of energy efficient modernization of district heating systems is proposed. This model includes indicators of the current status of heat sources, networks and heat consumers, energetic and economic models, restrictions, procedure of forming and analysis of the mutual influence of the recommended projects. The quantitative data on indicators of the current state of district heating systems of the cities of Ukraine are presented. The interrelation between indicators of the current state and projects of energy efficient modernization of district heating systems is shown. Assessment of energy self-sufficiency of municipal district heating systems on condition of thermal modernization of buildings is carried out. The creation of energy management systems at the district heating enterprises is proposed. Bib. 6, Fig. 7, Tab. 5.

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