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1
Eero, Margit. "Reconstructing the population dynamics of sprat (Sprattus sprattus balticus) in the Baltic Sea in the 20th century." ICES Journal of Marine Science 69, no. 6 (May 3, 2012): 1010–18. http://dx.doi.org/10.1093/icesjms/fss051.
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Abstract Eero, M. 2012. Reconstructing the population dynamics of sprat (Sprattus sprattus balticus) in the Baltic Sea in the 20th century. – ICES Journal of Marine Science, 69: 1010–1018 . Long time-series of population dynamics are increasingly needed in order to understand human impacts on marine ecosystems and support their sustainable management. In this study, the estimates of sprat (Sprattus sprattus balticus) biomass in the Baltic Sea were extended back from the beginning of ICES stock assessments in 1974 to the early 1900s. The analyses identified peaks in sprat spawner biomass in the beginning of the 1930s, 1960s, and 1970s at ∼900 kt. Only a half of that biomass was estimated for the late 1930s, for the period from the late 1940s to the mid-1950s, and for the mid-1960s. For the 1900s, fisheries landings suggest a relatively high biomass, similar to the early 1930s. The exploitation rate of sprat was low until the development of pelagic fisheries in the 1960s. Spatially resolved analyses from the 1960s onwards demonstrate changes in the distribution of sprat biomass over time. The average body weight of sprat by age in the 1950s to 1970s was higher than at present, but lower than during the 1980s to 1990s. The results of this study facilitate new analyses of the effects of climate, predation, and anthropogenic drivers on sprat, and contribute to setting long-term management strategies for the Baltic Sea.
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Lippy, William H., Leonard P. Berenholz, and John M. Burkey. "Otosclerosis in the 1960s, 1970s, 1980s, and 1990s." Laryngoscope 109, no. 8 (August 1999): 1307–9. http://dx.doi.org/10.1097/00005537-199908000-00022.
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Schultz, Sally M., and Roxanne T. Johnson. "INCOME TAX ALLOCATION: THE CONTINUING CONTROVERSY IN HISTORICAL PERSPECTIVE." Accounting Historians Journal 25, no. 2 (December 1, 1998): 81–111. http://dx.doi.org/10.2308/0148-4184.25.2.81.
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The appropriate means of accounting for income taxes on financial statements has been among the most hotly debated and frequently recycled issues of the past 50 years. This retrospective account begins with the issuance of the first professional standards during the 1930s and 1940s, and illustrates how theoretical arguments, developed in professional and academic journals during the 1950s, were subsequently recycled and revised during later decades. The problems that led to reconsideration of the deferred tax issue by both the APB during the 1960s and the FASB during the 1980s and 1990s are discussed, as are the solutions offered by these standard setters.
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Jost, Timothy Stoltzfus. "Eight Decades of Discouragement: The History of Health Care Cost Containment in the USA." Forum for Health Economics and Policy 15, no. 3 (September 10, 2012): 53–82. http://dx.doi.org/10.1515/fhep-2012-0009.
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Abstract This chapter traces the history of attempts at cost control in the United States from the origins of our modern health care financing system in the 1930s and 1940s, through health care cost regulation in the 1970s, and the deregulatory 1980s and 1990s, to the Affordable Care Act.
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Majumdar, Sumit. "Utilization of Different Categories of Resources in Indian Industry." Vikalpa: The Journal for Decision Makers 22, no. 4 (October 1997): 41–48. http://dx.doi.org/10.1177/0256090919970405.
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In this paper, Sumit Majumdar analyses the patterns of utilization of various key resources — production staff, administrative staff, physical capital, and working capital — in the Indian indus try between the period 1950-51 and 1992-93. The ratio of optimal to actual input usage is calculated for the four key resource inputs. It is found that Indian industry was relatively efficient in the 1950s, but efficiency had plummeted in the 1960s and 1970s relative to the 1950s. The regression of industrial performance in the 1960s and 1970s was reversed in the 1980s. However, in the 1990s, the Indian industry has merely caught up with a performance level once attained in the 1950s and no dynamic progress in its performance over time is noted.
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Llorca-Jaña, Manuel, Diego Barría Traverso, Diego del Barrio Vásquez, and Javier Rivas. "Malnutrition Rates in Chile from the Nitrate Era to the 1990s." International Journal of Environmental Research and Public Health 18, no. 24 (December 12, 2021): 13112. http://dx.doi.org/10.3390/ijerph182413112.
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Following Salvatore and the WHO, in this article, we provide the first long-term estimates of malnutrition rates for Chile per birth cohort, measured through stunting rates of adult males born from the 1870s to the 1990s. We used a large sample of military records, representative of the whole Chilean population, totalling over 38 thousand individuals. Our data suggest that stunting rates were very high for those born between the last three decades of the nineteenth century and the first two decades of the twentieth century. In addition, stunting rates increased from the 1870s to the 1900s. Thereafter, there was a clear downward trend in stunting rates (despite some fluctuations), reaching low levels of malnutrition, in particular, from the 1960s (although these are high if compared to developed countries). The continuous decrease in stunting rates from the 1910s was mainly due to a combination of factors, the importance of which varied over time, namely: Improved health (i.e., sharp decline in infant mortality rates during the whole period); increased energy consumption (from the 1930s onwards, but most importantly during the 1990s); a decline in poverty rates (in particular, between the 1930s and the 1970s); and a reduction in child labour (although we are less able to quantify this).
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Maloney, Thomas N. "Higher Places in the Industrial Machinery?" Social Science History 26, no. 3 (2002): 475–502. http://dx.doi.org/10.1017/s0145553200013067.
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The economic history of African American workers since 1940 has been marked by alternating episodes of progress and stagnation. Sharp gains in relative incomes during the 1940s were followed by little change in this measure in the 1950s. Renewed progress from the mid-1960s to the mid-1970s was followed by a new period of stagnation and even decline in relative pay in the 1980s and early 1990s. The important episodes of progress were to a great degree driven by changes on the demand side of the labor market: rapid growth in labor demand—especially for blue-collar workers—during WorldWar II and the effect of new antidiscrimination policies on the demand for black labor after 1965 (Donohue and Heckman 1991; Jaynes andWilliams 1989: 294–96).
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Zheng, Jingyun, Yingzhuo Yu, Xuezhen Zhang, and Zhixin Hao. "Variation of extreme drought and flood in North China revealed by document-based seasonal precipitation reconstruction for the past 300 years." Climate of the Past 14, no. 8 (August 9, 2018): 1135–45. http://dx.doi.org/10.5194/cp-14-1135-2018.
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Abstract. Using a 17-site seasonal precipitation reconstruction from a unique historical archive, Yu-Xue-Fen-Cun, the decadal variations of extreme droughts and floods (i.e., the event with occurrence probability of less than 10 % from 1951 to 2000) in North China were investigated, by considering both the probabilities of droughts/floods occurrence in each site and spatial coverage (i.e., percentage of sites). Then, the possible linkages of extreme droughts and floods with ENSO (i.e., El Niño and La Niña) episodes and large volcanic eruptions were discussed. The results show that there were 29 extreme droughts and 28 extreme floods in North China from 1736 to 2000. For most of these extreme drought (flood) events, precipitation decreased (increased) evidently at most of the sites for the four seasons, especially for summer and autumn. But in drought years of 1902 and 1981, precipitation only decreased in summer slightly, while it decreased evidently in the other three seasons. Similarly, the precipitation anomalies for different seasons at different sites also existed in several extreme flood years, such as 1794, 1823, 1867, 1872 and 1961. Extreme droughts occurred more frequently (2 or more events) during the 1770s–1780s, 1870s, 1900s–1930s and 1980s–1990s, among which the most frequent (3 events) occurred in the 1900s and the 1920s. More frequent extreme floods occurred in the 1770s, 1790s, 1820s, 1880s, 1910s and 1950s–1960s, among which the most frequent (4 events) occurred in the 1790s and 1880s. For the total of extreme droughts and floods, they were more frequent in the 1770s, 1790s, 1870s–1880s, 1900s–1930s and 1960s, and the highest frequency (5 events) occurred in the 1790s. A higher probability of extreme drought was found when El Niño occurred in the current year or the previous year. However, no significant connections were found between the occurrences of extreme floods and ENSO episodes, or the occurrences of extreme droughts/floods and large volcanic eruptions.
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Stockemer, Daniel, and Rodrigo Praino. "The Incumbency Advantage in the US Congress: A Roller-Coaster Relationship." Politics 32, no. 3 (September 3, 2012): 220–30. http://dx.doi.org/10.1111/j.1467-9256.2012.01438.x.
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While every student in American politics knows that the incumbency advantage grew post-1965, it is less clear as to whether or not this growth has been sustainable throughout the 1980s, 1990s and 2000s. Focusing on the last three decades, we show that the electoral margins of sitting members of the House of Representatives have not linearly grown over the past 60 years. On the contrary, the constant increase in incumbents' vote shares between the 1960s and 1980s could not be sustained in the 1990s. In fact, in the 1990s, the incumbency advantage dropped sharply to levels experienced in the 1960s. In recent years, the electoral margin of sitting House members seems to have grown again to levels comparable to those in the 1970s.
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Collins, David N. "Climatic warming, glacier recession and runoff from Alpine basins after the Little Ice Age maximum." Annals of Glaciology 48 (2008): 119–24. http://dx.doi.org/10.3189/172756408784700761.
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AbstractRecords of discharge of rivers draining Alpine basins with between 0 and ~70% ice cover, in the upper Aare and Rhône catchments, Switzerland, for the period 1894–2006 have been examined together with climatic data for 1866–2006, with a view to assessing the effects on runoff from glacierized basins of climatic warming coupled with glacier recession following the Little Ice Age maximum. Annual runoff from ice-free basins reflects precipitation variations, rising from minima between 1880 and 1910 to maxima between the late 1960s and early 1980s. The more highly glacierized the basin, the more runoff mimicked mean May–September air temperature during two periods of warming. Runoff increased gradually from the 1900s, rapidly in the 1940s, before decreasing to the late 1970s. Rising runoff levels during the second warming period failed to exceed those attained during the first, despite higher summer temperatures. Although temperatures continued to rise, discharge from glacierized basins declined after reaching maxima in the late 1980s to early 1990s. In the first warming period, rising specific melt rates augmented by increasing precipitation opposed the impact of declining glacier area on runoff. Although melt continued to increase in the second period, enhanced melting (even in the exceptionally warm summer of 2003) appears to have been insufficient to offset reducing glacier surface area exposed to melt, low or reducing levels of precipitation, and increasing evaporation. Thus runoff from glacierized basins peaked in the late 1940s to early 1950s.
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Hanagan, Michael P. "Labor History and the New Migration History: A Review Essay." International Labor and Working-Class History 54 (1998): 57–79. http://dx.doi.org/10.1017/s0147547900006219.
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Debates over the significance of immigration and demands for its restriction in industrialized nations have been a major feature of political life in the 1980s and 1990s. There are several reasons for this heightened concern. In Western Europe, the 1990s have been a decade of slower growth, particularly compared with the halcyon decades of the 1950s and 1960s when mass migration, severely restricted during the interwar years, again became a routine aspect of European life.Even more persistent and troubling has been the declining position of less skilled workers in the economies of industrial nations. The International Monetary Fund notes that, beginning in the 1970s or the early 1980s, “labor markets in the advanced economies have been characterized by marked increases in wage inequality in some countries between the more skilled and less skilled, and in other countriesby rises in unemployment among the less skilled.” Many less skilled workers believe that migrants are responsible for their declining wages and unemployment.
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Helpman, Elhanan. "The Structure of Foreign Trade." Journal of Economic Perspectives 13, no. 2 (May 1, 1999): 121–44. http://dx.doi.org/10.1257/jep.13.2.121.
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During the last two decades, new research has greatly advanced the understanding of the structure of world trade. While research in the 1960s and 1970s provided mostly theoretical insights, major empirical innovations concerning the study of factor content of net trade flows appeared in the 1980s. Important improvements in this line of research were added in the 1990s. The author also discusses the literature that emphasizes economies of scale and product differentiation. This work was done mostly in the 1980s and 1990s, yielding important theoretical and empirical findings. An emphasis on the interplay between theoretical and empirical research characterizes the entire presentation.
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Ramsey, Justin, and Tara S. Ramsey. "Ecological studies of polyploidy in the 100 years following its discovery." Philosophical Transactions of the Royal Society B: Biological Sciences 369, no. 1648 (August 5, 2014): 20130352. http://dx.doi.org/10.1098/rstb.2013.0352.
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Polyploidy is a mutation with profound phenotypic consequences and thus hypothesized to have transformative effects in plant ecology. This is most often considered in the context of geographical and environmental distributions—as achieved from divergence of physiological and life-history traits—but may also include species interactions and biological invasion. This paper presents a historical overview of hypotheses and empirical data regarding the ecology of polyploids. Early researchers of polyploidy (1910s–1930s) were geneticists by training but nonetheless savvy to its phenotypic effects, and speculated on the importance of genome duplication to adaptation and crop improvement. Cytogenetic studies in the 1930s–1950s indicated that polyploids are larger (sturdier foliage, thicker stems and taller stature) than diploids while cytogeographic surveys suggested that polyploids and diploids have allopatric or parapatric distributions. Although autopolyploidy was initially regarded as common, influential writings by North American botanists in the 1940s and 1950s argued for the principle role of allopolyploidy; according to this view, genome duplication was significant for providing a broader canvas for hybridization rather than for its phenotypic effects per se . The emphasis on allopolyploidy had a chilling effect on nascent ecological work, in part due to taxonomic challenges posed by interspecific hybridization. Nonetheless, biosystematic efforts over the next few decades (1950s–1970s) laid the foundation for ecological research by documenting cytotype distributions and identifying phenotypic correlates of polyploidy. Rigorous investigation of polyploid ecology was achieved in the 1980s and 1990s by population biologists who leveraged flow cytometry for comparative work in autopolyploid complexes. These efforts revealed multi-faceted ecological and phenotypic differences, some of which may be direct consequences of genome duplication. Several classical hypotheses about the ecology of polyploids remain untested, however, and allopolyploidy—regarded by most botanists as the primary mode of genome duplication—is largely unstudied in an ecological context.
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Collins, David N. "Climatic variation and runoff in mountain basins with differing proportions of glacier cover*." Hydrology Research 37, no. 4-5 (August 1, 2006): 315–26. http://dx.doi.org/10.2166/nh.2006.017.
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Records of discharge from partially-glacierised basins in the upper Rhône catchment, Switzerland, were examined together with air temperature and precipitation data in order to assess impacts of climatic fluctuation and percentage glacierisation of basin on runoff, as glaciers declined from dimensions attained during the Little Ice Age. Above 60% glacierisation, year-to-year variations in runoff mimicked mean May–September air temperature, rising in the warm 1940s, declining in the cool 1970s, before increasing (by 50%) into the warm dry 1990s/2000s but not reaching 1940s maxima. In basins with between 35–60% glacierisation, flow also increased into the 1980s but waned through the 1990s. With less than 2% glacierisation, the pattern of runoff was broadly the inverse of that of temperature and followed precipitation, dipping in the 1940s, rising in the cool wet late 1960s, and declining into the 1990s/2000s, with glacier melt in warm years being insufficient to offset lack of precipitation. On mid-sized glaciers at relatively low elevations and with limited vertical extent, in warmer years, the transient snow line was above the highest point of the glacier. Only on large glaciers descending from high elevations can rising transient snowlines continue to expose more ice to melt. Runoff from such large glaciers was enhanced in warm summers but reduction of overall ice area through glacier recession led to runoff in the warmest summer (2003) being lower than the previous peak discharge recorded in the second warmest year (1947).
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Singha, Komol. "Understanding ethnicity-based autonomy movements in India's northeastern region." Nationalities Papers 45, no. 4 (July 2017): 687–706. http://dx.doi.org/10.1080/00905992.2017.1300879.
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Soon after independence, India's northeastern region was swamped in a series of conflicts starting with the Naga secessionist movement in the 1950s, followed by others in the 1960s. The conflicts intensified and engulfed the entire region in the 1970s and 1980s. However, in the 1990s, following reclamation of ethnic identities amid gnawing scarcities, the conflicts slowly turned into internal feuds. Consequently, alliance and re-alliance among the ethnic groups transpired. In the 2000s, it finally led to the balkanization of ethnicity-based autonomy movements in the region. Unfortunately, the state's ad-hoc measures failed to contain protected conflicts and, instead, compounded the situation and swelled hybrid ethnic identities.
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Wolfe, Eugene L. "Creating Democracy's Good Losers: The Rise, Fall and Return of Parliamentary Disorder in Post-war Japan." Government and Opposition 39, no. 1 (2004): 55–80. http://dx.doi.org/10.1111/j.0017-257x.2004.00031.x.
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Abstract‘Good losers’, legislators willing to play by parliamentary rules, even at the cost of defeat, are a microfoundation of democracy. Yet how they are created has not been adequately explained. Theories focusing on institutions, evolving norms, electoral incentives and ideology do not account for the case of post-war Japan, where deliberate disorder was common in the 1950s and 1960s, absent in the 1970s and 1980s, and returned in the 1990s. This paper highlights the importance of the legislative majority's behaviour in encouraging procedural compliance through the provision of informal mechanisms of consultation and compromise. The lack of such mechanisms also explains periods of parliamentary disorder in other countries.
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Vakhtin, Nikolai. "Two approaches to reversing language shift and the Soviet publication program for indigenous minorities." Études/Inuit/Studies 29, no. 1-2 (November 13, 2006): 131–47. http://dx.doi.org/10.7202/013936ar.
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AbstractThe present paper discusses the interplay between the Soviet state policy towards indigenous languages of "Northern Minorities" and the attitudes of the indigenous communities to their languages and to language endangerment. The author uses statistics on the Soviet state program of publishing books (primarily school books) in indigenous languages that was launched in the late 1920s and underwent considerable changes in the course of the decades to follow. It is argued that the publishing policy for all languages of indigenous minorities of the Far North followed the same consistent pattern that included several phases: "a glorious beginning" in the 1930s interrupted by the war, then a strong continuation in the 1950s, then a drop in the 1960-70s, and a resurrection in the 1980s, interrupted by the economic crisis of the early 1990s. The most interesting and the least clear period is the two and a half decades between mid-1950s and late 1970s where changes of the state policy may be connected with changes in community attitudes towards their native languages. A successful policy of language preservation and revitalization is possible only if it is supported simultaneously by the state and the indigenous community.
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Duan, J., L. Wang, L. Li, and Y. Sun. "Tree-ring inferred glacier mass balance variation in southeastern Tibetan Plateau and its linkage with climate variability." Climate of the Past Discussions 9, no. 4 (July 2, 2013): 3663–80. http://dx.doi.org/10.5194/cpd-9-3663-2013.
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Abstract. A large number of glaciers in the Tibetan Plateau (TP) have experienced wastage in recent decades. And the wastage is different from region to region, even from glacier to glacier. A better understanding of long-term glacier variations and their linkage with climate variability requires extending the presently observed records. Here we present the first tree-ring-based glacier mass balance (MB) reconstruction in the TP, performed at the Hailuogou Glacier in southeastern TP during 1865–2007. The reconstructed MB is characterized mainly by ablation over the past 143 yr, and typical melting periods occurs in 1910s–1920s, 1930s–1960s, 1970s–1980s, and the last 20 yr. After the 1900s, only a few short periods (i.e., 1920s–1930s, the 1960s and the late 1980s) is characterized by accumulation. These variations can be validated by the terminus retreat velocity of the Hailuogou Glacier and the ice-core accumulation rate in Guliya and respond well to regional and Northern Hemisphere temperature anomaly. In addition, the reconstructed MB is significantly and negatively correlated with August-September all-Indian monsoon precipitation (AIR) (r1871–2008= −0.342, p < 0.0001). These results suggest that temperature variability is the dominant factor for the long-term MB variation at the Hailuogou Glacier. Indian summer monsoon precipitation doesn't affect the MB variation, yet the significant negative correlation between the MB and the AIR implies the positive effect of summer heating of the TP on Indian summer monsoon precipitation.
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Duan, J., L. Wang, L. Li, and Y. Sun. "Tree-ring-inferred glacier mass balance variation in southeastern Tibetan Plateau and its linkage with climate variability." Climate of the Past 9, no. 6 (November 4, 2013): 2451–58. http://dx.doi.org/10.5194/cp-9-2451-2013.
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Abstract. A large number of glaciers in the Tibetan Plateau (TP) have experienced wastage in recent decades. And the wastage is different from region to region, even from glacier to glacier. A better understanding of long-term glacier variations and their linkage with climate variability requires extending the presently observed records. Here we present the first tree-ring-based glacier mass balance (MB) reconstruction in the TP, performed at the Hailuogou Glacier in southeastern TP during 1868–2007. The reconstructed MB is characterized mainly by ablation over the past 140 yr, and typical melting periods occurred in 1910s–1920s, 1930s–1960s, 1970s–1980s, and the last 20 yr. After the 1900s, only a few short periods (i.e., 1920s–1930s, the 1960s and the late 1980s) were characterized by accumulation. These variations can be validated by the terminus retreat velocity of Hailuogou Glacier and the ice-core accumulation rate in Guliya and respond well to regional and Northern Hemisphere temperature anomaly. In addition, the reconstructed MB is significantly and negatively correlated with August–September all-India monsoon rainfall (AIR) (r1871-2008 = −0.342, p < 0.0001). These results suggest that temperature variability is the dominant factor for the long-term MB variation at the Hailuogou Glacier. Indian summer monsoon precipitation does not affect the MB variation, yet the significant negative correlation between the MB and the AIR implies the positive effect of summer heating of the TP on Indian summer monsoon precipitation.
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Burda, Jan. "Dendrogeomorphological analysis of mass movement dynamics in the Jezeří Chateau area." Geografie 115, no. 4 (2010): 440–60. http://dx.doi.org/10.37040/geografie2010115040440.
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The object of this study is the dendrogeomorphological research of 35 severely tilted trees (Fagus sylvatica) in a natural hazard area around Jezeří Chateau in the Krušné Hory Mountains. The paper studies the dynamics of mass movement in a geologically and geomorphologically problematic area, where mining expanded high up onto the southeast-facing slopes of the Krušné Hory Mountains. Growth disturbances – eccentricities of annual rings and sudden growth changes – were examined and described for the period from 1900 to 2006. Significantly low mass movement “rates” can be observed during the 1940s and 1990s, high mass movement “rates” were identified during the first decade of the 1900s, the end of 1950s and during the 1970s.
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Thompson, Katherine F., and Elaine R. Homestead. "Middle School Organization through the 1970s, 1980s, and 1990s." Middle School Journal 35, no. 3 (January 2004): 56–60. http://dx.doi.org/10.1080/00940771.2004.11461433.
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Law, Cheryl, and Magdala Peixoto Labre. "Cultural Standards of Attractiveness: A Thirty-Year Look at Changes in Male Images in Magazines." Journalism & Mass Communication Quarterly 79, no. 3 (September 2002): 697–711. http://dx.doi.org/10.1177/107769900207900310.
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This study examined images of male bodies in the popular magazines GQ, Rolling Stone, and Sports Illustrated, from 1967 to 1997. A sample of images was analyzed using an eight-point scale measuring levels of body fat and muscularity. Findings suggest that the male bodies featured in these magazines became more lean, muscular, and V-shaped (featuring a broad chest tapering to a narrow waist) over the years. Leanness and V-shape increased dramatically from the 1960s and 1970s to the 1980s, declining slightly in the 1990s. Muscularity increased progressively over the years, reaching its highest level in the 1990s.
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Greener, Ian. "“The Ghost of Health Services Past” Revisited: Comparing British Health Policy of the 1950s with the 1980s and 1990s." International Journal of Health Services 31, no. 3 (July 2001): 635–46. http://dx.doi.org/10.2190/a86c-ta6x-x47j-x1h8.
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It has been argued repeatedly that British health policy in the 1990s had a number of similarities with that of the 1930s. This article, while accepting that a comparison of these two periods may be useful, argues that comparing policy in the 1950s with that in the 1980s and 1990s is even more illuminating. To demonstrate this the author outlines first the similarities in policy between the early and later periods, then the differences, and the events that led to each. These comparisons suggest that there is evidence of path dependency in British health policy, and although the United Kingdom appeared to break away from the policy path for a short time in the late 1980s, the changes proposed then do not appear to have been as radical as first suggested. Many of the issues highlighted in the 1950s seem to remain unresolved today.
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Gill, Brian P., and Steven L. Schlossman. "A Nation at Rest: The American Way of Homework." Educational Evaluation and Policy Analysis 25, no. 3 (September 2003): 319–37. http://dx.doi.org/10.3102/01623737025003319.
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We use several national surveys to provide a 50-year perspective on time spent on homework. The great majority of American children at all grade levels now spend less than one hour studying on a typical day—an amount that has not changed substantially in at least 20 years. Moreover, high school students in the late 1940s and early 1950s studied no more than their counterparts did in the 1970s, 1980s, and 1990s. Changes in educational opinion on homework over the last half century have had little effect on student behavior, with only two notable exceptions: a temporary increase in homework time in the decade following Sputnik, and a new willingness in the last two decades to assign small amounts to primary-grade students.
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Wei, Yu Hang, De Shan Tang, and Zhen Zhu Meng. "Analysis on the Relation of Water Environment and Economic Development." Applied Mechanics and Materials 737 (March 2015): 941–44. http://dx.doi.org/10.4028/www.scientific.net/amm.737.941.
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The similarity in water environment variation course and economic development of the Taihu Lake riverbasin and Japan is analyzed and harnessing countermeasures are introduced. The close relation between economic development and water environment is analyzed. It is suggested that coordinated development policy of “Population-Resources-Environment-Economy” should be adopted. The research results demonstrate that water quality variation trend of the Taihu Lake riverbasin in the period of 1980s-the late 1990s was very similar the that of Japan in the period of 1960s-1980s, the rapid economic development of the Taihu Lake Riverbasin in the 1980s-1990s was similar to that of Japan rapid economic development period of 1960s.-1970s, the economic development level and water environment state of Japan in 1970 was very similar to that of the Taihu Lake Riverbasin in 1998,the economic development and water environment variation of the Taihu Lake riverbasin lags behind 20 plus years than that of Japan. We can infer the present and future situation of the Taihu Lake according to the history and present social-economic and water environment development situation of Japan.
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Yen, Gili, and Cheng-few Lee. "Efficient Market Hypothesis (EMH): Past, Present and Future." Review of Pacific Basin Financial Markets and Policies 11, no. 02 (June 2008): 305–29. http://dx.doi.org/10.1142/s0219091508001362.
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In this survey article, after delineating its historical origin of the Efficient Market Hypothesis (EMH), the authors summarize from the methodological perspective the empirical findings from 1960s through 1990s bearing on the EMH under the headings "supporting empirical findings as documented in 1960s", "mixed empirical findings as merged in the late 1970s through 1980s" and "challenging empirical findings as appeared in 1990s". The authors move on to sketch the ongoing debate in the 21st century based on empirical evidence available and then present an overall assessment of the EMH. Once necessary reservations and precautious interpretations are taken into consideration, the authors contend at the end of the article that the EMH is here to stay and will continue to play an important role in modern finance for years to come.
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Mohan, Avinash Lalith, and Kaushik Das. "History of surgery for the correction of spinal deformity." Neurosurgical Focus 14, no. 1 (January 2003): 1–5. http://dx.doi.org/10.3171/foc.2003.14.1.2.
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During the last century the technological advances in the field of spinal surgery had a dramatic impact on the treatment of spinal deformity in children and adults. Before the advent of medications and vaccines to treat and/or prevent tuberculosis and poliomyelitis, patients suffering from these disorders often became incapacitated by the resulting kyphoscoliosis. In the early 1900s Lange began to address this problem mechanically by using foreign materials to stabilize the spine internally. In the 1950s and 1960s, owing to the efforts of Harrington and others, the process evolved to create the first generation of modern spinal instrumentation. The Harrington rod was able to correct a spinal deformity primarily through distraction. In the next wave of advances, some of the shortcomings of Harrington rods were addressed. Segmental fixation involving sublaminar wires was introduced in the 1970s by Luque. Anterior approaches and instrumentation-related techniques developed by Zielke and colleagues as well as Dywer and coworkers in the late 1960s and mid-1970s allowed for better correction of deformity with immobilization of fewer motion segments compared with posterior surgery. Transpedicular fixation of the spine was popularized by Cotrel and Dubousset in the 1980s; they used the technique to perform segmental stabilization, which better reduces the rotational aspect of a deformity. Finally, in the mid-1990s, thoracoscopic techniques were developed and are currently in use for anterior release and placement of instrumentation. The authors review the major technical developments for the surgical treatment of spinal deformity.
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Bergh, Bruce G. Vanden, Nora J. Rifon, and Molly Catherine Ziske. "What's Bad in an Ad: Thirty Years of Opinion from Ad Age's “Ads-We-Can-Do-Without” Letters." Journalism & Mass Communication Quarterly 72, no. 4 (December 1995): 948–59. http://dx.doi.org/10.1177/107769909507200417.
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Advertising practitioners' criticism of ad content was studied through the lens of Advertising Age's ads-we-can-do-without letters for a thirty-year period from 1962 to 1992. A content analysis of 404 complaint letters and accompanying ads found significant changes in practitioner criticism as we movefrom the 1960s to the 1970s. The 1960s produced significantly more complaints about executional errors while the 1970s was a time of heightened concern about the negative social impact of sex, violence, and vulgarity in ads. Concern about sexually- related content and vulgarity continued through the 1980s but appeared to drop off significantly in the 1990s.
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Romer, Christina D., and David H. Romer. "Choosing the Federal Reserve Chair: Lessons from History." Journal of Economic Perspectives 18, no. 1 (February 1, 2004): 129–62. http://dx.doi.org/10.1257/089533004773563476.
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This paper demonstrates that the key determinants of policy success have been policymakers' views about how the economy works and what monetary policy can accomplish. In the first major section of the paper, the authors analyze the narrative record of the Federal Reserve to discover what policymakers believed and why they chose the policies they did. The authors find that the well-tempered monetary policies of the 1950s and of the 1980s and 1990s stemmed from a conviction that inflation has high costs and few benefits, together with realistic views about the sustainable level of unemployment and the determinants of inflation. In contrast, the profligate policies of the late 1960s and 1970s stemmed initially from a belief in a permanent tradeoff between inflation and unemployment, and later from a natural rate framework with a highly optimistic estimate of the natural rate of unemployment and a highly pessimistic estimate of the sensitivity of inflation to economic slack. And the deflationary policies of the late 1930s stemmed from a belief that the economy could overheat at low levels of capacity utilization and that monetary ease could do little to stimulate a depressed economy.
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Kulkarni, Milind, and Louis G. Pol. "Migration expectancy revisited: Results for the 1970s, 1980s and 1990s." Population Research and Policy Review 13, no. 2 (June 1994): 195–202. http://dx.doi.org/10.1007/bf01080203.
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O'Connor, Barbara. "Ruin and Romance: Heterosexual Discourses on Irish Popular Dance, 1920–1960." Irish Journal of Sociology 12, no. 2 (November 2003): 50–67. http://dx.doi.org/10.1177/079160350301200204.
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This article examines the ways in which dance embodies and expresses sexual discourses through an exploration of popular recreational dance in Ireland from 1920 to 1960 with particular emphasis on women. The author looks at the antipathy to ‘modern’ dancing by the State, Church and cultural groups during the 1920s and 1930s. This era was distinguished by a sexual discourse of ruin and sin and was part of the project of creating an ideal nation. It is argued that this period was followed by a more positive, though not unproblematic, discourse of romance from the 1940s onwards, which was associated with increasing consumption and urbanisation. In the concluding section differences and similarities between the two eras are suggested and brief comparison is made with sexual discourses of dance in the 1980s and 1990s.
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Notkola, Veijo, Harri Siiskonen, and Riikka Shemeikka. "The Causes of Changes in Fertility in Northern Namibia." Finnish Yearbook of Population Research 51 (April 27, 2017): 23–40. http://dx.doi.org/10.23979/fypr.60262.
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The main aim of this study was to analyse fertility change in Ovamboland (North-Central Namibia) (1927–2010) and the Kavango region (North-East Namibia) (1935–1979) in Northern Namibia. According to the results, the fertility change was quite similar in both areas: fertility declined during the 1950s compared to the preceding period, 1935–1949. We can assume that the main reason for this early fertility decline was changes in the number of migrant workers (out-migration), which caused changes in both the marriage age and birth intervals. In both Ovamboland and in the Kavango region, fertility increased from the late 1950s into the early 1960s and the fertility transition started at the end of the 1970s. In both areas, the increase in fertility during thelate 1950s and early 1960s was probably due to the improved health situation. Fertility transition started at the end of the 1970s, but mortality had already started to decline before that. The main causes of this declining fertility at the end of the 1970s and during the 1980s were improved access to modern methods of contraception and probably also the increased level of education. As a result of the HIV epidemic, mortality increased in Ovamboland at the end of the 1990s and early 2000s. The declining fertility in the same period was probably linked to this increased mortality due to AIDS, while the increased fertility after 2008 is, in turn, probably linked to management of the HIV epidemic.
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VERNENGO, MATÍAS. "From restrained golden age to creeping platinum age: A periodization of Latin American development in the Robinsonian tradition." Revista de Economia Política 35, no. 4 (December 2015): 683–707. http://dx.doi.org/10.1590/0101-31572015v35n04a01.
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ABSTRACTThis paper analyzes Joan Robinson's growth model, and then adapted in order to provide an exploratory taxonomy of Growth Eras. The Growth Eras or Ages were for Robinson a way to provide logical connections among output growth, capital accumulation, the degree of thriftiness, the real wage and illustrate a catalogue of growth possibilities. This modified taxonomy follows the spirit of Robinson's work, but it takes different theoretical approaches, which imply that some of her classifications do not fit perfectly the ones here suggested. Latin America has moved from a Golden Age in the 1950s and 1960s, to a Leaden Age in the 1980s, having two traverse periods, one in which the process of growth and industrialization accelerated in the late 1960s and early 1970s, which is here referred to as a Galloping Platinum Age, and one in which a process of deindustrialization, and reprimarization and maquilization of the productive structure took place, starting in the 1990s, which could be referred to as a Creeping Platinum Age.
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Nam, Duck-Hyun. "Historical exploration of the Korean special school physical education and the disability sports environment." Korean Journal of Sport Science 31, no. 2 (June 30, 2020): 318–29. http://dx.doi.org/10.24985/kjss.2020.31.2.318.
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Purpose This study examines the Physical Education curriculum history of special schools, and then in-depth grasps the process of how the sports environment for the disabled has changed by age. Method The research method was literature review analyzing papers, reports and newspapers. For the concrete process, this study verified the relationship between the research subject and the collected data through experts and historians with disabilities to verify the sports data for the disabled. Results First, the process of physical education management of special schools is as follows. in the 1940's and 50's special schools, physical education was carried out simply by gymnastics. but, special schools were differentiated by the characteristics of the disabled, and the institutional foundation for physical education was also imitated by the 1960s, 1970s and 1980s, special schools were shortened in physical education time due to the increase in the number of courses and the strengthening of disability coping programs. in the 1990s, as special sports curriculum was established, customized prescription for students with disabilities was implemented. Second, the process of changing disability sports is as follows. In the 1960s and 1970s, disability sports were mainly focused on special schools, while in the 1980s, disability sports were expanded by the government. in particular, the hosting of the 88 Seoul Olympics and Seoul Paralympics provides an opportunity to equip the disabled with a system, organization and facilities. in the 1990s disability sports was meaningful in terms of academic progress, and with the quantitative growth of the 1980s and the academic foundations of the 1990s, disability sports in the 2000s provided a legal basis and improved welfare conditions for the disabled. In the future, it is necessary to find a way to solve the value of physical education for the disabled more reasonably.
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Adom Getachew Talks to Ashish Ghadiali. "World makers of the Black Atlantic." Soundings 75, no. 75 (September 1, 2020): 180–98. http://dx.doi.org/10.3898/soun.75.11.2020.
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In Worldmaking After Empire, Adom Getachew challenges standard histories of decolonisation, which chart the story of a simple shift from empire to independent nationhood. She shows that supporters of decolonisation have always sought to create something much more than nationalisms: they have engaged in a dynamic and rival system of revolutionary worldmaking, seeking an alternative international system that could replace the old inequitable dispensation. She charts this decolonial project from its roots in the works of Black Atlantic thinkers like W.E.B. Du Bois and C.L.R. James in the 1920s and 1930s. The key events she tracks are the challenges the project faced in the United Nations in the 1940s and 1950s; attempts at regional federation in late 1950s and 1960s; and the emergence of the New International Economic Order in the 1960s and 1970s. This a twentieth century tradition now ripe to be reclaimed and revived.
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Njenga, F. G., P. Kigamwa, and M. Okonji. "Africa: the traumatised continent, a continent with hope." International Psychiatry 1, no. 1 (July 2003): 4–7. http://dx.doi.org/10.1192/s1749367600007608.
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Many African countries gained political independence in the 1960s and 1970s and went through difficult times in economic, political and security terms in the 1980s and early 1990s. Mental health services and research were not spared and stagnated or deteriorated during this period. The effects of poor governance, inequitable distribution of resources and environmental degradation conspired with natural and man-made disasters (wars in particular) to drive Africa into an abyss of despair.
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Hijazi, Ziyad M., and Damien Kenny. "Landmark lecture on interventional cardiology: interventional cardiac catheterisation for CHD: the past, present, and the future." Cardiology in the Young 27, no. 10 (December 2017): 1974–85. http://dx.doi.org/10.1017/s1047951117002141.
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AbstractCHD affects millions of patients worldwide. Interventional therapies for CHD goes back to the mid-1960s when Bill Rashkind performed balloon atrial septostomy on a cyanotic baby with transposition of the great vessels. This was followed by development of balloon catheters to perform balloon valvuloplasties and angioplasties in the early to late 1980s. Although King and Mills performed the first transcatheter closure of secundum atrial septal defect in the mid-1970s, this procedure was better realised in the mid-1990s. More intracardiac defect closures were performed in the late 1990s and early 2000. This brings us to the current era of percutaneous valve implantation as developed by Bonhoeffer. In this paper, we will discuss the past, present, and future of interventional cardiac catheterisation for CHD patients.
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Madenjian, Charles P., Gary L. Fahnenstiel, Thomas H. Johengen, Thomas F. Nalepa, Henry A. Vanderploeg, Guy W. Fleischer, Philip J. Schneeberger, et al. "Dynamics of the Lake Michigan food web, 19702000." Canadian Journal of Fisheries and Aquatic Sciences 59, no. 4 (April 1, 2002): 736–53. http://dx.doi.org/10.1139/f02-044.
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Herein, we document changes in the Lake Michigan food web between 1970 and 2000 and identify the factors responsible for these changes. Control of sea lamprey (Petromyzon marinus) and alewife (Alosa pseudoharengus) populations in Lake Michigan, beginning in the 1950s and 1960s, had profound effects on the food web. Recoveries of lake whitefish (Coregonus clupeaformis) and burbot (Lota lota) populations, as well as the buildup of salmonine populations, were attributable, at least in part, to sea lamprey control. Based on our analyses, predation by salmonines was primarily responsible for the reduction in alewife abundance during the 1970s and early 1980s. In turn, the decrease in alewife abundance likely contributed to recoveries of deepwater sculpin (Myoxocephalus thompsoni), yellow perch (Perca flavescens), and burbot populations during the 1970s and 1980s. Decrease in the abundance of all three dominant benthic macroinvertebrate groups, including Diporeia, oligochaetes, and sphaeriids, during the 1980s in nearshore waters ([Formula: see text]50 m deep) of Lake Michigan, was attributable to a decrease in primary production linked to a decline in phosphorus loadings. Continued decrease in Diporeia abundance during the 1990s was associated with the zebra mussel (Dreissena polymorpha) invasion, but specific mechanisms for zebra mussels affecting Diporeia abundance remain unidentified.
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Didenko, К. "INVOLVEMENT OF THE THEORY OF SOCIAL CONSTRUCTION FOR CONSIDERATION OF ARCHITECTURAL AND CITY BUILDING PRACTICE." Municipal economy of cities 1, no. 154 (April 3, 2020): 185–91. http://dx.doi.org/10.33042/2522-1809-2020-1-154-185-191.
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Social aspects of the formation of architectural complexes in metropolian Kharkov have not yet been analyzed in homeland architectural theory. The study into "Kharkov constructivism", due to unfortunate historical ocurrence, is still in fact at the initial stage. Thesises of Kharkov authors illuminate this phenomenon in general or analyze some of the most significant sights. Approaches to the study of social aspects of architecture and urban development went through several stages. Architectural theory of the late 1940s- the beginning of 1950s was sharply critical of the architectural and urban planning experiments in the 1920s. The XXth century Soviet history of architecture in the 1960s and 1970s was marked by ideological rehabilitation of constructivism, including social experiments of the 1920s - early 1930s. A turn from apologetics of the 1960s - 1980s to critical analysis of the architecture and urban development of the avant-garde was indicated at the beginning of 2000s by the studies considering Soviet architectural and urban planning practice in the context of public behavior management as a tool for structuring general population to achieve political goals. Foreign studies into the Soviet avant-garde sprang up in the 1970s - early 1980s affected by Western sociology where architecture began to be viewed as a tool for managing social processes and new types of structures and models of urban planning organization- as “a transition from social to material”. Many studies highlighted the influence of Soviet architectural and urban planning programs of the 1920s and 1930s on the system and structure of public consciousness. There was established that large-scale housing, cultural and domestic construction was carried out as part of the capital's administrative and government center creation programs and the formation of an industrial complex. There were identified four conceptual approaches for housing construction, they were consistently implemented during the realization of the two above-mentioned programs: garden city, communal house, housing complex and social city. In these programs, the concepts of "garden city" and "communal houses" were practically tested and reasonably rejected, and the most productive models were residential complexes and social city. Keywords: social construction, architectural and urban concepts, soviet human, metropolian Kharkov.
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Phillips, Natalie, Maciej Henneberg, Nicholas Norgan, Lincoln Schmitt, Caroline Potter, and Stanley Ulijaszek. "The emergence of obesity among Australian Aboriginal children." Anthropological Review 76, no. 1 (June 1, 2013): 101–7. http://dx.doi.org/10.2478/anre-2013-0004.
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Abstract Obesity is of significant and growing concern among Australian Aboriginal children, and is linked to patterns of child growth. The aim of this paper is to show diverse patterns of growth and obesity emergence among Australian Aboriginal children using historical anthropometric data. Child growth in height, weight and body mass index (BMI) is reanalysed for children aged 2 to 19 years in Australian Aboriginal communities spanning two distinct time periods (the 1950s and 1960s; and the 1990s and 2000s) and six different geographical locations: Yuendumu, Haast’s Bluff, Beswick, Kalumburu, Gerard, and Raukkan. Comparisons of stature and BMI between the earlier and later years of measurement were made, and the proportion of children classified as overweight or obese by the International Obesity Task Force criteria estimated, to allow international comparison. Aboriginal children in the 1990s and 2000s were heavier, with higher BMI than those in the 1950s and 1960s, differences in height being less marked. While no children were classified as overweight or obese in the earlier period, 15% of males and 3% of females were classified so in the later period. The data suggests that the period of onset of the epidemic of overweight and obesity among rural Australian Aboriginal children was likely to have been between the 1960s and 1980s.
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Domagała, Zygmunt, Paweł Dąbrowski, Michał Porwolik, Krystian Porwolik, and Bohdan Gworys. "Is the secular trend reflected in early stages of human ontogenesis?" Anthropological Review 77, no. 1 (January 1, 2014): 77–86. http://dx.doi.org/10.2478/anre-2014-0007.
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Abstract There are a limited number of studies on secular changes in the neonatal period, and the majority of them concern research related to childhood and puberty The objective of our study was to carry out a comparative analysis of body weight and length at birth in neonates born in Wrocław in subsequent decades since 1950 to find out if these parameters are subject to secular trend, and what values they attained during the studied period of 50 years. The study was carried out in the 1950s, 1960s, 1970s, 1980s, 1990s and in 2000 to analyse changes in body length, body weight and Rohrer index over time. The sample studied consisted of 7510 neonates, 3882 males and 3628 females, born in Wroclaw. Secular changes were tested using one-way variance analysis. The values of F statistics were compared to the critical values of the F Snedecor distribution. Changes in the features of neonates in subsequent study years were analysed using the modified z-score. Data were normalised for standard deviation in decade increments. Results demonstrated very slight, though statistically insignificant increase in body weight at birth. Over the 50-year period the mean body weight of neonates was in the range of 3.3-3.4 kg, regardless of sex. Results demonstrated very slight, though statistically insignificant increase in body weight at birth. Over the 50-year period the mean body weight of neonates was in the range of 3.3-3.4 kg, regardless of sex. The acceleration in the body length of neonates caused a gradual decrease in the mean values of the Rohrer index. No secular trend in body weight was found in Wrocław neonates over the 50-year period between 1950 and 2000 With regard to body length at birth, four waves of deceleration and acceleration were found: period 1 (1950s): deceleration in the increase of the analysed body parameters of neonates; period 2 (1960s): acceleration in neonates’ growth; period 3 (1970s and 1980s): economic crisis and political transformations in Poland; this is reflected by the stable mean values of body dimensions in neonates. The secular trend clearly decelerated, and period 4 (1990s and 2000) - very intense acceleration in both body weight and length and the Rohrer index.
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Suzuki, Takaaki. "Japan's Economic Dilemma: The Institutional Origins of Prosperity and Stagnation. By Bai Gao. Cambridge: Cambridge University Press, 2001. 328p. $54.95 cloth, $19.95 paper." American Political Science Review 96, no. 4 (December 2002): 850–51. http://dx.doi.org/10.1017/s0003055402730463.
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The once-formidable Japanese economy has fallen upon hard times. After posting a roughly double-digit rate of real annual growth from the mid-1950s to the early 1970s, and generally outperforming the economies of other advanced industrial democracies during the 1970s and 1980s, the Japanese economy suffered a prolonged period of stagnation throughout most of the 1990s. Given this dramatic reversal, Bai Gao sets about the ambitious task not only of explaining why the Japanese economy has soured, but of providing a broad institutional framework that underscores the common factors behind the high growth period, the bubble economy of the 1980s, and the collapse of the bubble in the 1990s. To achieve this task, Gao applies what he terms “the logic of reverse reasoning”; he takes the rise and collapse of the bubble economy as the “starting point fortheoretical reasoning,” examining the institutional mechanisms that purportedly produced it. He then works backward in time to reexamine how these institutional mechanisms operated during the high-growth era, and to identify the “environmental changes” that account for the reasons these institutional mechanisms produced such varied outcomes over time (pp. 6–7).
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Kennedy, Andrew B. "India's Nuclear Odyssey: Implicit Umbrellas, Diplomatic Disappointments, and the Bomb." International Security 36, no. 2 (October 2011): 120–53. http://dx.doi.org/10.1162/isec_a_00058.
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Why did India merely flirt with nuclear weapons in the 1960s and 1970s only to emerge as a nuclear power in the 1990s? Although a variety of factors informed India's prolonged restraint and subsequent breakthrough, new evidence indicates that India's “nuclear odyssey” can be understood as a function of Indian leaders' ability to secure their country through nonmilitary means, particularly implicit nuclear umbrellas and international institutions. In the 1960s and 1970s, India was relatively successful in this regard as it sought and received implicit support from the superpowers against China. This success, in turn, made acquiring the bomb a less pressing question. At the end of the Cold War, however, nonmilitary measures ceased to be viable for India. In the late 1980s, waning Soviet support and the failure of Rajiv Gandhi's diplomatic initiatives led to the creation of India's de facto nuclear arsenal. In the 1990s, India developed a more overt capability, not simply because the pro-bomb Bharatiya Janata Party came to power, but also because its external backing had vanished and because its efforts to improve its security through diplomacy proved unsuccessful.
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Thompson, Katherine F., and Elaine R. Homestead. "Middle School Students and Parents through the 1970s, 1980s, and 1990s." Middle School Journal 35, no. 4 (March 2004): 56–61. http://dx.doi.org/10.1080/00940771.2004.11461442.
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Sjare, Becky, and Garry B. Stenson. "Changes in the reproductive parameters of female harp seals (Pagophilus groenlandicus) in the Northwest Atlantic." ICES Journal of Marine Science 67, no. 2 (December 26, 2009): 304–15. http://dx.doi.org/10.1093/icesjms/fsp267.
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Abstract Sjare, B., and Stenson, G. B. 2010. Changes in the reproductive parameters of female harp seals (Pagophilus groenlandicus) in the Northwest Atlantic. – ICES Journal of Marine Science, 67: 304–315. Changes in female harp seal (Pagophilus groenlandicus) reproductive parameters from 1980 to 2004, and long-term trends since the early 1950s, are evaluated. Estimates of the total number of seals in the Northwest Atlantic declined from ∼3.0 million in the 1950s to 1.8 million in the early 1970s, then increased steadily to 5.5 million in 1996, at which relatively stable level it has remained since. Pregnancy rates increased from ∼86% in the 1950s to a high of 98% in the mid-1960s, then declined to ∼65–70% by the early 1990s; the rate then varied between 45 and 70% from 2000 to 2004. Concurrently, the mean age at sexual maturity decreased from 5.8 (s.e = 0.02) years in the mid-1950s to 4.1 (s.e. = 0.02) in the late 1970s, increased to 5.5 (s.e. = 0.03) years by the early 1990s, and peaked at 5.7 (s.e. = 0.01) in 1995. From 2000 to 2004, mean age varied from 4.9 (s.e. = 0.01) to 6.0 (s.e. = 0.01) years. Although the direction of change in each of the parameters was consistent with a density-dependent response, changes in population size explained relatively little of the variability observed, suggesting that other ecological or environmental factors were influential.
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An, Yunjo. "A History of Instructional Media, Instructional Design, and Theories." International Journal of Technology in Education 4, no. 1 (December 20, 2020): 1. http://dx.doi.org/10.46328/ijte.35.
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This paper discusses the history of the instructional design and technology field in four major time periods: (1) 1900s – 1930s, (2) World War II – 1970s, (3) 1980s – 1990s, and (4) 21st century. Since the 20th century has been discussed in detail in earlier works, this paper puts more focus on the 21st century section, which includes discussions of social media, online and blended learning, mobile learning, the open educational resource (OER) movement, massive open online courses (MOOCs), virtual reality (VR) and augmented reality (AR), digital game-based learning (DGBL), gamification, the maker movement, new instructional design process models, and instructional-design theory. While previous discussions of the history of the field focused on the history of instructional media and instructional design and the evolution of learning theories, this paper includes the discussion of the evolution of instructional-design theories and models, which have received relatively less attention.
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Macnicol, John. "Reconstructing the Underclass." Social Policy and Society 16, no. 1 (September 26, 2016): 99–108. http://dx.doi.org/10.1017/s1474746416000403.
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In late 2011, the Conservative and Liberal Democrat coalition government announced the launch of a new programme on ‘troubled families’ – a term used to describe the estimated 120,000 most behaviourally anti-social families in England and Wales. To many social scientists, this appeared to be yet another reconstruction of the broad ‘underclass’ concept that has run like a thread of analysis through UK poverty discourses over the last 150 years. The symbolic nature and coded meanings of this particular concept of poverty are very interesting, as is the way it has been reconstructed periodically. This paper summarises these reconstructions, and the analytical issues raised by them: the ‘residuum’ concept of the 1880–1914 period; the ‘social problem group’ of the inter-war years; the ‘problem family’ of the 1940s and 1950s; the ‘cycle of deprivation’ of the 1970s; and the ‘underclass’ of the 1980s and 1990s.
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Goldstein, Melvyn C. "The United States, Tibet, and the Cold War." Journal of Cold War Studies 8, no. 3 (July 2006): 145–64. http://dx.doi.org/10.1162/jcws.2006.8.3.145.
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This article examines U.S. policy toward Tibet from the end of the 1940s to the end of the 1980s, especially the 1950s and 1960s. U.S. policy during this period operated on two levels. At the strategic level, the United States consistently supported China's claim of sovereignty over Tibet. But at the tactical level, U.S. policy varied a great deal over time, ranging from the provision of military and financial aid to Tibetan guerrilla forces in the 1950s and 1960s to the almost complete lack of official attention to Tibet in the 1970s and early 1980s. The article explains why the U.S. government has never accepted Tibet's claim to independence and why the question of Tibet, after falling into obscurity in the 1970s, reemerged on the U.S. agenda in the mid- to late 1980s. The article highlights the cynicism that has often characterized tactical shifts in U.S. policy.
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Al Hasan, Syed Mahfuz, Jennifer Saulam, Kanae Kanda, Akitsu Murakami, Yusuke Yamadori, Yukinori Mashima, Nlandu Roger Ngatu, and Tomohiro Hirao. "Temporal Trends in Apparent Energy and Macronutrient Intakes in the Diet in Bangladesh: A Joinpoint Regression Analysis of the FAO’s Food Balance Sheet Data from 1961 to 2017." Nutrients 12, no. 8 (August 2, 2020): 2319. http://dx.doi.org/10.3390/nu12082319.
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We analyzed the temporal trends and significant changes in apparent energy and macronutrient intakes in the Bangladeshi diet from 1961 to 2017. Due to the lack of a long-running national dietary intake dataset, this study used the Food and Agriculture Organization (FAO)’s old and new food balance sheet dataset. We used the joinpoint regression model and jump model to analyze the temporal trends in apparent energy and macronutrient intakes. The annual percentage change (APC) was computed for each segment of the trends. Bangladesh has experienced a late energy revolution in their dietary history. During the 1960s, 1970s, 1980s, and 1990s, Bangladesh was suffering from substantive calorie deficits, where in apparent energy intake was less than 2200 kcal/day/person. Since the late 1990s, Bangladesh has made significant progress in raising the apparent energy consumption in the diet. Since the late 1970s, apparent fat intake started to increase significantly at a marked rate (APC = 2.16), whereas since the early 1990s, protein intake increased significantly by 1.33% per year. Plant sources have mostly governed the protein and fat intake trends in the Bangladeshi diet since 1960, whereas animal sources began to contribute significantly in protein intake since 1990 (APC = 3.43) and in fat intake since 2000 (APC = 2.88). Bangladesh overcame the substantive calorie deficit condition in the diet from the late 1990s. Excessive carbohydrate intake along with imbalanced and low-quality protein and fat intakes have been the central features in the diet in Bangladesh.
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Li, Sanggum. "Modern Literature after the 1960s in Korea." International Journal of Area Studies 11, no. 1 (May 1, 2016): 25–37. http://dx.doi.org/10.1515/ijas-2016-0002.
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Abstract Since the beginning of the 1990s in Korea, the category and definition of new generation literature have become the topic of heated debate. One may understand this tendency as ‘generation severance’, ‘alienation between social classes’, or the ‘consumption-oriented culture of the masses’. Here, we call the literary youth born in approximately 1960 ‘the new generation’. In literature, the new generation refers to the appearance of a new culture and way of thinking. This generation passed their childhood in the 1970s and faced no such great difficulties as their parents combating poverty. However, they grew up under the indirect influence of a dark political outlook and suppression. Generally, they have a great affection for the culture produced by mass media. If we compare their development process with the literary stream in Korea, the 1960s could be defined as the era of literature for independence and strong self-awareness, the 1970s as the era for people, the 1980s as the era for the rights or emancipation of labour, and the 1990s as the era of new generation literature. Meanwhile, the appearance of the ‘Korean Wave’, or so-called ‘Hallyu’, has become one of the most beloved popular cultural phenomena both in Asia and in other countries since the late 1990s.