The Progressive Movement of 1924.

1949 ◽  
Vol 14 (1) ◽  
pp. 181
Author(s):  
Odin W. Anderson ◽  
Kenneth Campbell MacKay
Keyword(s):  
Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2609
Author(s):  
Abniel Machín ◽  
Kenneth Fontánez ◽  
Juan C. Arango ◽  
Dayna Ortiz ◽  
Jimmy De León ◽  
...  

At present, the world is at the peak of production of traditional fossil fuels. Much of the resources that humanity has been consuming (oil, coal, and natural gas) are coming to an end. The human being faces a future that must necessarily go through a paradigm shift, which includes a progressive movement towards increasingly less polluting and energetically viable resources. In this sense, nanotechnology has a transcendental role in this change. For decades, new materials capable of being used in energy processes have been synthesized, which undoubtedly will be the cornerstone of the future development of the planet. In this review, we report on the current progress in the synthesis and use of one-dimensional (1D) nanostructured materials (specifically nanowires, nanofibers, nanotubes, and nanorods), with compositions based on oxides, nitrides, or metals, for applications related to energy. Due to its extraordinary surface–volume relationship, tunable thermal and transport properties, and its high surface area, these 1D nanostructures have become fundamental elements for the development of energy processes. The most relevant 1D nanomaterials, their different synthesis procedures, and useful methods for assembling 1D nanostructures in functional devices will be presented. Applications in relevant topics such as optoelectronic and photochemical devices, hydrogen production, or energy storage, among others, will be discussed. The present review concludes with a forecast on the directions towards which future research could be directed on this class of nanostructured materials.


2021 ◽  
Vol 69 (3) ◽  
pp. 702-724
Author(s):  
Jean-Pierre Poulain

Among the different theories used to explain social change, the transition theory holds a special place. It has been applied to subjects such as demography, epidemiology, nutrition, etc. and most often from a multidisciplinary perspective. However, beyond the apparent uniqueness of the transition label there are quite different theoretical frameworks and presuppositions, which can be a source of misunderstanding. A first perspective considers change as the transition from one stable state to another and concentrates on the processes at work in the transition phase. It focuses attention on the interactions between cultural and biological variables and tries to take into account the consequences of the fact that they move at different rates. A second perspective conceives change as a series of stages (more or less stable situations) and proceeds to analyse the structural transformation of the organisation at each stage. The emphasis is placed on the transformations that take place during these stages. This brings us closer to the theory of stages. Finally, a third perspective combines stages and transitions. Change is seen as part of an evolutionary and progressive movement and as being reversible or not. This article studies the cognitive organisation of the different theoretical variants of the transition model in which food plays a more or less important role.


1963 ◽  
Vol 15 (3) ◽  
pp. 473
Author(s):  
Bartlett C. Jones ◽  
James H. Timberlake
Keyword(s):  

2017 ◽  
Vol 55 (3) ◽  
pp. 1064-1083 ◽  
Author(s):  
Marshall I. Steinbaum ◽  
Bernard A. Weisberger

Thomas Leonard's 2016 book Illiberal Reformers: Race, Eugenics, and American Economics in the Progressive Era argues that exclusionary views on eugenics, race, immigration, and gender taint the intellectual legacy of progressive economics and economists. This review essay reconsiders that legacy and places it in the context within which it developed. While the early generations of scholars who founded the economics profession in the United States and trained in its departments did indeed hold and express retrograde views on those subjects, those views were common to a broad swath of the intellectual elite of that era, including the progressives' staunchest opponents inside and outside academia. Moreover, Leonard anachronistically intermingles a contemporary critique of early-twentieth-century progressive economics and the progressive movement writ large, serving to decontextualize those disputes—a flaw that is amplified by the book's unsystematic approach to reconstructing the views and writing it attacks. Notwithstanding the history Leonard presents, economists working now nonetheless owe their progressive forebears for contributions that have become newly relevant: the “credibility revolution,” the influence of economic research on policy and program design, the prestige of economists working in and providing advice to government agencies and policy makers, and the academic freedom economists enjoy in modern research-oriented universities are all a part of that legacy. (JEL A11, B15, D82, J15, N31, N32)


2012 ◽  
Vol 35 (5) ◽  
pp. 260 ◽  
Author(s):  
Jahan Lakhani ◽  
Karen Benzies ◽  
K. Alix Hayden

Purpose: To solve large complex health-related problems, there has been a progressive movement towards interdisciplinary research teams; however, there has been minimal investigation into the attributes of successful teams. The purpose of this literature review was to examine the attributes that are important for the effective functioning of these teams. Method: Literature from medicine, nursing and psychology databases, published between 1990 and 2010, was reviewed. Principal findings: Thematic organization of the findings identified seven attributes important to effective interdisciplinary research teams: team purpose, goals, leadership, communication, cohesion, mutual respect and reflection. These attributes are described in depth. Conclusion: Identification of these attributes could form the basis of a new measure to monitor interdisciplinary research team effectiveness, identify weaknesses and promote team development.


2021 ◽  
Vol 12 ◽  
Author(s):  
Annika Heinz ◽  
Judith Schilling ◽  
Willeke van Roon-Mom ◽  
Sybille Krauß

Huntington’s disease (HD) is caused by an expansion mutation of a CAG repeat in exon 1 of the huntingtin (HTT) gene, that encodes an expanded polyglutamine tract in the HTT protein. HD is characterized by progressive psychiatric and cognitive symptoms associated with a progressive movement disorder. HTT is ubiquitously expressed, but the pathological changes caused by the mutation are most prominent in the central nervous system. Since the mutation was discovered, research has mainly focused on the mutant HTT protein. But what if the polyglutamine protein is not the only cause of the neurotoxicity? Recent studies show that the mutant RNA transcript is also involved in cellular dysfunction. Here we discuss the abnormal interaction of the mutant HTT transcript with a protein complex containing the MID1 protein. MID1 aberrantly binds to CAG repeats and this binding increases with CAG repeat length. Since MID1 is a translation regulator, association of the MID1 complex stimulates translation of mutant HTT mRNA, resulting in an overproduction of polyglutamine protein. Thus, blocking the interaction between MID1 and mutant HTT mRNA is a promising therapeutic approach. Additionally, we show that MID1 expression in the brain of both HD patients and HD mice is aberrantly increased. This finding further supports the concept of blocking the interaction between MID1 and mutant HTT mRNA to counteract mutant HTT translation as a valuable therapeutic strategy. In line, recent studies in which either compounds affecting the assembly of the MID1 complex or molecules targeting HTT RNA, show promising results.


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