Distance Regulation of Hand-Reared Goslings (Anser Indicus) To an Unresponsive Parent: a Study of the Short-Term Dynamics of Attachment

Behaviour ◽  
1989 ◽  
Vol 108 (3-4) ◽  
pp. 209-240 ◽  
Author(s):  
Jürg Lamprecht

AbstractThis study investigated the ways in which young goslings contribute to the proximity between parent and offspring in geese. It sought to detect the rules governing excursions of hand-reared goslings (Anser indicus) from a stationary and non-responding human 'parent' on a large lawn. Distance to the parent and behaviours (distress calling, feeding and others) were monitored during 149 30-min-sessions of 28 goslings (7-19 days old), most of which were accompanied in some sessions by a sibling. Of two additional experiments, one demonstrated the positive effect of sibling group size on maximum distance from the parent, the other showed that distress calling induced by forced separation from the (human) parent was reduced by the presence of siblings. Excursion analysis revealed that the probability of returning to the parent was independent of time and distance. This allowed rejection of some earlier models of excursion control. Only sudden disturbances in the environment (occurring at random with respect to the start of an excursion), forced separation from the parent, and-similarly-the parent's walking away were found to elicit approach to the parent. The speed of leaving the parent was also independent of time and distance. Thus distance was not limited by an increasing locomotor tendency to return. But rate of distress calling increased with distance. Two causes for the goslings' departures were identified: 1) parental non-signalling (by the "mute" parent), which aroused a tendency "to go home", and 2) hunger combined with the tendency to forage in a fixed direction. Return probability, speed of leaving and distress call rate at any given distance were lower when a gosling was accompanied by a sibling, apparently because the social feedback received from the sibling compensated for the parent's non-signalling. In spite of behavioural tendencies which lead a gosling to potentially unlimited distances from its parents, it will not normally get lost, as it returns whenever alarmed or when the parents walk away, and because goose parents tend to join a gosling distress calling at a distance.

2017 ◽  
Author(s):  
George Berry ◽  
Sean J. Taylor

Studies of online social influence have demonstrated that friends have important effects on many types of behavior in a wide variety of settings. However, we know much less about how influence works among relative strangers in digital public squares, despite important conversations happening in such spaces. We present the results of a study on large public Facebook pages where we randomly used two different methods—most recent and social feedback—to order comments on posts. We find that the social feedback condition results in higher quality viewed comments and response comments. After measuring the average quality of comments written by users before the study, we find that social feedback has a positive effect on response quality for both low and high quality commenters. We draw on a theoretical framework of social norms to explain this empirical result. In order to examine the influence mechanism further, we measure the similarity between comments viewed and written during the study, finding that similarity increases for the highest quality contributors under the social feedback condition. This suggests that, in addition to norms, some individuals may respond with increased relevance to high-quality comments.


2018 ◽  
Vol 63 (01) ◽  
pp. 27-44
Author(s):  
YINAN YANG ◽  
QIAN WANG

Using the China Household Finance Survey data in 2011, the estimation results of structural equation modeling demonstrate that the respondents with higher time preference rate have a significant higher probability of investing in stocks, which implies that the short-term households will prefer stock investment. The social insurance programs and insurance policies held by the family will have a significantly direct positive effect in promoting stock investment and also a significantly direct positive effect on the respondent’s time preference, which could further indirectly increase the family’s stock investment. These results show that the safety-net built by the Chinese government, including the social security and commercial insurance, is very likely to attract more short-term investors into the stock market. These empirical results provide new evidences to explain the extreme volatility of Chinese stock market and also testify the policy effect of building an environment for people to possess property income in China.


2018 ◽  
Vol 1 (1) ◽  
pp. 21
Author(s):  
Ilyas Lamuda

This study was to determine the effect of Short-Term Investments and Assets Assets in generating profits in the company PT. Taspen. The method of analysis used qualitative methods That is explained and analyzed by descriptive data. Quantitative methods to study whether the Short-term investment is profitable or not, can be determined either by the method Accounting Rate Of Return (ARR) That method that measures the level of profit from investments used to gain tersebut.dan the return on investment assets at PT. Taspen. To test the hypothesis then performed calculations using multiple linear regression analysis. Furthermore pengelohan data and hypothesis testing will be assisted by a computer program Softwere SPSS (Statistical Service and Solution product).Research shows that variable Short Term Asset Investments concluded that simultaneous effect relationship is negative and insignificant. But in partial, it provides a significant and positive effect on earnings. Assets Investments variable and not significant positive effect on earnings, but in partial, it provides a significant and positive effect on earnings.


Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3961
Author(s):  
Hussein Al-Hazmi ◽  
Xi Lu ◽  
Dominika Grubba ◽  
Joanna Majtacz ◽  
Przemysław Kowal ◽  
...  

The short-term effects of temperature on deammonification sludge were evaluated in a laboratory-scale sequencing batch reactor (SBR). Mathematical modeling was used for further evaluations of different intermittent aeration strategies for achieving high and stable deammonification performance at decreasing temperatures. As for the biomass cultivated at high temperatures (e.g., 30 °C), a higher temperature dependency (the adjusted Arrhenius coefficient θ for 11–17 °C = 1.71 vs. θ for 17–30 °C = 1.12) on the specific anammox growth rates was found at lower temperatures (11–17 °C) in comparison with higher temperatures (17–30 °C). Further evaluations of recovering the nitrogen removal efficiency at decreasing temperatures with the mathematical model by modifying the intermittent aeration strategies (aeration frequency (F) and the ratio (R) between non-aerated (non-aer) phase and aerated (aer) phase durations) indicated that intermittent aeration with a prolonged non-aerated phase (e.g., R ≥ 4 regardless of F value) would help to maintain high and stable deammonification performance (~80%) at decreasing temperatures (14–22 °C). Extending the non-aerated phases (increasing R) and reducing the frequency (F) of off/on phase changes have a positive effect on increasing energy savings, leading to increasing interest in this method.


2021 ◽  
pp. 089033442199477
Author(s):  
Virginia Thorley

Wet-nurses themselves rarely left written accounts. In this article, I have reconstructed their experiences and work situations breastfeeding other women’s infants in colonial Australia through examining available sources concerning their employment situations and the fate of their infants when they were boarded out, as they commonly were. The employment of wet-nurses by royal households or prominent families has long been the topic of historical accounts, whereas the situation of the more numerous wet-nurses further down the social spectrum has received disproportionately little examination. In this article, I do not discuss informal, altruistic wet nursing by family or neighbors but, rather, the situation of those women for whom it was an occupation, by its very nature short term. Primary material sighted for this study included a considerable number of advertisements for positions placed by employers, their intermediaries (e.g., family physicians) and wet-nurses themselves, and newspaper reports when the wet-nurse’s children came to the attention of the courts. Death for boarded-out infants who succumbed to inappropriate feeding and substandard care was typically ascribed to “natural causes.”


2021 ◽  
Vol 24 (2) ◽  
pp. 201-209 ◽  
Author(s):  
Dominic Abrams ◽  
Fanny Lalot ◽  
Michael A. Hogg

COVID-19 is a challenge faced by individuals (personal vulnerability and behavior), requiring coordinated policy from national government. However, another critical layer—intergroup relations—frames many decisions about how resources and support should be allocated. Based on theories of self and social identity uncertainty, subjective group dynamics, leadership, and social cohesion, we argue that this intergroup layer has important implications for people’s perceptions of their own and others’ situation, political management of the pandemic, how people are influenced, and how they resolve identity uncertainty. In the face of the pandemic, initial national or global unity is prone to intergroup fractures and competition through which leaders can exploit uncertainties to gain short-term credibility, power, or influence for their own groups, feeding polarization and extremism. Thus, the social and psychological challenge is how to sustain the superordinate objective of surviving and recovering from the pandemic through mutual cross-group effort.


2020 ◽  
Vol 6 ◽  
pp. 237802312098032
Author(s):  
Brandon G. Wagner ◽  
Kate H. Choi ◽  
Philip N. Cohen

In the social upheaval arising from the coronavirus disease 2019 (COVID-19) pandemic, we do not yet know how union formation, particularly marriage, has been affected. Using administration records—marriage certificates and applications—gathered from settings representing a variety of COVID-19 experiences in the United States, the authors compare counts of recorded marriages in 2020 against those from the same period in 2019. There is a dramatic decrease in year-to-date cumulative marriages in 2020 compared with 2019 in each case. Similar patterns are observed for the Seattle metropolitan area when analyzing the cumulative number of marriage applications, a leading indicator of marriages in the near future. Year-to-date declines in marriage are unlikely to be due solely to closure of government agencies that administer marriage certification or reporting delays. Together, these findings suggest that marriage has declined during the COVID-19 outbreak and may continue to do so, at least in the short term.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Ja-Ho Koo ◽  
Jhoon Kim ◽  
Yun Gon Lee ◽  
Sang Seo Park ◽  
Seoyoung Lee ◽  
...  

AbstractBy using multiple satellite measurements, the changes of the aerosol optical depth (AOD) and nitrogen dioxide (NO2) over South Korea were investigated from January to March 2020 to evaluate the COVID-19 effect on the regional air quality. The NO2 decrease in South Korea was found but not significant, which indicates the effects of spontaneous social distancing under the maintenance of ordinary life. The AODs in 2020 were normally high in January, but they became lower starting from February. Since the atmosphere over Eastern Asia was unusually stagnant in January and February 2020, the AOD decrease in February 2020 clearly reveals the positive effect of the COVID-19. Considering the insignificant NO2 decrease in South Korea and the relatively long lifetime of aerosols, the AOD decrease in South Korea may be more attributed to the improvement of the air quality in neighboring countries. In March, regional atmosphere became well mixed and ventilated over South Korea, contributing to large enhancement of air quality. While the social activity was reduced after the COVID-19 outbreak, the regional meteorology should be also examined significantly to avoid the biased evaluation of the social impact on the change of the regional air quality.


1994 ◽  
Vol 5 (3) ◽  
pp. 139-156
Author(s):  
Steven D. Silver

Consumers are seen as limited decision makers who set short-term activity levels from their budgets, stocks of experience, and values following a preference-maximizing heuristic. Disturbances to activity levels in their evolution by exogeneties of social and economic environments, and the feedback of activity levels which agents have no systematic ability to anticipate, reset stock and value levels through the interactive relationships among endogenous variables. Agents then solve the maximization problem for a subsequent period using stock and value levels as modified by the evolutionary process. The dependence of a single-period decision on the stock and value constructs is examined and forms for the dynamic evolution of stock and value constructs that represent the feedback of activity levels to stock and value levels are also introduced. Implications of these forms for the social construction of activities are discussed.


1984 ◽  
Vol 29 (3) ◽  
pp. 212-216 ◽  
Author(s):  
Ronald J. Dyck ◽  
Anthony S. Joyce ◽  
Hassan F.A. Azim

Premature termination of short-term psychotherapy was examined as a function of therapist and social support variables. Patient perceived therapist competence, knowledge, relaxed manner, understanding of the help wanted, attitude, acceptance, listening ability, and sensitivity differentiated Continuers from Terminators. Although few of the social support variables were related to the mode of treatment termination, Continuers were found to be more likely than Terminators to have discussed attendance at the Clinic with others, especially family members. These findings were discussed in terms of their relevance to treatment of the emotionally ill and to the training of clinicians.


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