scholarly journals The effect of mate removal on dawn singing behaviour in male pied bush chats

2011 ◽  
Vol 57 (1) ◽  
pp. 72-76 ◽  
Author(s):  
Vinaya Kumar Sethi ◽  
Dinesh Bhatt ◽  
Amit Kumar
Keyword(s):  
Social Relationships ◽  
Dawn Chorus ◽  
Song Complexity ◽  
Performance Time ◽  
Bout Length ◽  
Mate Removal ◽  
Removal Experiments ◽  
Dawn Song ◽  
Three Stages ◽  
Experimental Stage

Abstract To determine the influence of pairing status on dawn singing behaviour in pied bush chats Saxicola caprata, we conducted mate removal experiments across eight territories. The experiment was divided into three stages: pre-removal (pairs were present on their respective territories), removal (females were experimentally removed), and returned (females were released into the focal pairs’ territories). Dawn bout length, song rate, song complexity, percentage performance time, song perch height, and distance of singing location to territory boundary were measured for each male during each experimental stage. We did not find an effect of mate removal on any dawn song characteristics of male pied bush chats suggesting that the presence or absence of a mate does not influence male dawn singing behaviour. Our findings further suggest that males use dawn chorus to mediate social relationships with neighbouring males to proclaim an established territory.

scholarly journals Kilka uwag o responsywności prawa podatkowego na przykładzie urzędowych interpretacji prawa podatkowego

2019 ◽  
Author(s):  
Jarosław Kola ◽  
Przemysław Pest
Keyword(s):  
Social Relationships ◽  
Legal System ◽  
Law And Society ◽  
Tax Law ◽  
Tax Administration ◽  
Legal Systems ◽  
Basic Functions ◽  
Three Stages ◽  
The Concept Of Law ◽  
The Relationship

The article is an attempt to look at the development of Polish tax law through the prism of the concept of law development proposed by Ph. Selznick and Ph. Nonet. In the study Law and Society in Transition. Towards Responsive Law they distinguished three stages of evolution of legal systems: repressive, autonomous and responsive. The focus of the article is on the institution of the official interpretation of tax law, because an analysis of the transformation of the legal system allows to capture trends that are present in the development of its individual institutions as well as social relationships among its recipients. By indicating the evolution of official in terpretations of tax law in its two basic functions – those of informing and those of guaranteeing (protective) – the authors point to a wider context of the development of tax law to show whether and how changes in the normative regulation of official interpretations of tax law may affect the shape of the relationship between a tax payer and tax administration, where the perspective of the analysis of demand is the responsiveness of law. An analysis of the regulation of an official interpretation of tax law leads to the conclusion that due to the assigned ratio legis this interpretation must characterise them as corresponding mainly to the autonomous model. At the same time a responsive model of law does not undermine the autonomous model attributes. Thus if we were to accept that the provision of interpretation corresponds to the autonomous model, it would not be possible to note that it also has attributes that make it a responsive model. Irrespective of the fact that there is no element of negotiation, it is based on the interaction between the taxpayer and the tax administration. As part of this interaction, tax administration responds to the reported social need in terms of the ambiguity of law, which de iure – not least because of the possibility of bringing an action against the content of interpretation – takes place in the framework of a communication situation that is free from external coercion.

scholarly journals Interactive Communication Between Male and Female Great Tits (Parus Major) During the Dawn Chorus

The Auk ◽  
2004 ◽  
Vol 121 (1) ◽  
pp. 184-191 ◽  
Author(s):  
Leen Gorissen ◽  
Marcel Eens
Keyword(s):  
Life Histories ◽  
Bird Species ◽  
Parus Major ◽  
Egg Laying ◽  
Interactive Communication ◽  
Dawn Chorus ◽  
Nest Box ◽  
Interactive Behavior ◽  
Song Birds ◽  
Dawn Song

Abstract Studies of the dawn chorus in birds have focused mainly on the behavior and song output of males and on the function(s) of male song. Less attention has been paid to the females' behavior and to communication between members of a pair. In Great Tits (Parus major), males sing vigorously at dawn in the vicinity of the female's nest hole just before and during egg laying. We studied the female's vocal behavior during the dawn chorus as well as communication between pair members. All females vocally interacted with their mates from inside the nest box. Females produced a sound with a very low sound-pressure level only audible from few meters, which we have named the “quiet call.” This quiet call was unique to females and was only produced from inside the nest box. To our knowledge, our study is the first to show that both members of a pair vocally interact during the dawn chorus. Given that many temperate-zone bird species have similar life histories as the Great Tit, it is very likely that similar interactive behavior occurs in other (song)birds. This interactive behavior may provide a new and manipulable tool for testing hypotheses about the dawn song and can be used as a future bioassay of male vocalizations.

Friction behavior of waxy oil deposit removal using polymeric bristled brushes

2017 ◽  
Vol 232 (10) ◽  
pp. 1230-1239
Author(s):  
Hang Zhang ◽  
Zhicheng Lan ◽  
Shuhai Liu ◽  
Huaping Xiao
Keyword(s):  
Friction Behavior ◽  
Stick Slip ◽  
Friction Forces ◽  
Waxy Oil ◽  
Removal Experiments ◽  
Three Stages ◽  
Removal Processes ◽  
Wax Deposits ◽  
Slip Phenomenon ◽  
Deposit Removal

Pigging is the most effective and common way to remove the wax deposits in pipelines. The discs, cups, or brushes of a pig are executing components for waxy oil deposit removal. In this study, a homemade experiment setup was built and employed to conduct the waxy oil deposit removal experiments with various wax concentration at different scraping speeds using polymeric bristled brushes. An explanation model was established to analyze the formation of waxy oil deposit chips. The entire removal processes were captured and the resistant friction forces were measured during the experiments. Our results show that there are three stages in the scraping process: (a) brush deforming; (b) steady scraping; (c) brush leaving; In the scraping stage, the frictional resistant force was found to decrease as the scraping speed increases. The frictional resistant force increases as the wax concentration increases. There is obvious stick-slip phenomenon in the steady scraping process. The wax concentration influences the shape of the chips. The shape of the high wax concentration deposit chips is saw-toothed.

scholarly journals Motor learning in children and adolescents institutionalized in shelters

2017 ◽  
Vol 30 (4) ◽  
pp. 725-732 ◽  
Author(s):  
Caroline Moreira Souza Santos ◽  
Marcela Montovanelli Rodrigues ◽  
Deborah Cristina Gonçalves Luiz Fernani ◽  
Ana Paula Coelho Figueira Freire ◽  
Carlos Bandeira de Mello Monteiro ◽  
...  
Keyword(s):  
Motor Learning ◽  
Children And Adolescents ◽  
Task Performance ◽  
Motor Development ◽  
Control Group ◽  
Performance Time ◽  
Maze Test ◽  
Post Test ◽  
Three Stages ◽  
Experimental Group

Abstract Introduction: Children and adolescents living in shelters may present with impaired motor development, cognitive function, as well as speech and understanding; psychological alterations; and hyperactivity. All of these factors may be detrimental to motor learning. Objective: To investigate motor learning in children and adolescents living in shelters, and to compare it with that of individuals living in a family context. Methods: We assessed 36 individuals who were divided into groups: an experimental group, composed of institutionalized children and adolescents (EG, n=18), and a control group (CG, n = 18) that was matched by age and sex. Motor learning was assessed using a maze test in three stages: acquisition, retention and transfer. The data were analyzed using the Shapiro Wilk, Wilcoxon, Mann Whitney, Kruskal Wallis tests and Dunn’s post-test (p < 5%). Results: The EG had a longer task performance time than the CG. There was a significant reduction in task performance time between the first (EG = 11.05 [8.50-14.85]s; CG:7.65 [5.95-10.23]s) and the last task performance block (EG:8.02 [6.86-10.23]s; GC: 5.50 [4.50-6.82]s) in both groups. When comparing the variables of the last acquisition (GE:8.02[6.86-10.23]s; GC: 5.50[4.50-6.82]s), retention (GE:8.20[7.09-9.89]s;GC:5.35[4.50-6.22]s) and transfer blocks (GE:8.30[6.28-11.43]s; GC:5.30[4.90-6.82]s) in each group, we found no changes in task performance time between test batteries. Conclusion: Individuals living in shelters showed a motor learning deficit, as evidenced by longer task performance time when compared to their controls. Nevertheless, both groups performed the task in a similar manner.

scholarly journals Kilka uwag o responsywności prawa podatkowego na przykładzie urzędowych interpretacji prawa podatkowego

2018 ◽  
Author(s):  
Jarosław Kola ◽  
Przemysław Pest
Keyword(s):  
Social Relationships ◽  
Legal System ◽  
Law And Society ◽  
Tax Law ◽  
Tax Administration ◽  
Legal Systems ◽  
Basic Functions ◽  
Three Stages ◽  
The Concept Of Law ◽  
The Relationship

The article is an attempt to look at the development of Polish tax law through the prism of the concept of law development proposed by Ph. Selznick and Ph. Nonet. In the study Law and Society in Transition. Towards Responsive Law they distinguished three stages of evolution of legal systems: repressive, autonomous and responsive. The focus of the article is on the institution of the official interpretation of tax law, because an analysis of the transformation of the legal system allows to capture trends that are present in the development of its individual institutions as well as social relationships among its recipients. By indicating the evolution of official in terpretations of tax law in its two basic functions – those of informing and those of guaranteeing (protective) – the authors point to a wider context of the development of tax law to show whether and how changes in the normative regulation of official interpretations of tax law may affect the shape of the relationship between a tax payer and tax administration, where the perspective of the analysis of demand is the responsiveness of law. An analysis of the regulation of an official interpretation of tax law leads to the conclusion that due to the assigned ratio legis this interpretation must characterise them as corresponding mainly to the autonomous model. At the same time a responsive model of law does not undermine the autonomous model attributes. Thus if we were to accept that the provision of interpretation corresponds to the autonomous model, it would not be possible to note that it also has attributes that make it a responsive model. Irrespective of the fact that there is no element of negotiation, it is based on the interaction between the taxpayer and the tax administration. As part of this interaction, tax administration responds to the reported social need in terms of the ambiguity of law, which de iure – not least because of the possibility of bringing an action against the content of interpretation – takes place in the framework of a communication situation that is free from external coercion.

scholarly journals SOCIAL RELATIONSHIPS IN CONGREGATIONAL PRAYERS TOWARD SOCIAL LIFE IN MAKASSAR CITY DURING COVID-19 PANDEMIC

2021 ◽  
Vol 9 (2) ◽  
pp. 355
Author(s):  
Andi Sumardin ◽  
Lomba Sultan ◽  
Nurman Said ◽  
M Saleh Ridwan
Keyword(s):  
Social Relationships ◽  
Social Life ◽  
Self Reflection ◽  
The Public ◽  
South Sulawesi ◽  
The Social ◽  
Interview Guide ◽  
Three Stages ◽  
Depth Interviews

This paper elaborates the social relationships in congregational prayers toward the social life in Makassar City during Covid 19 pandemic. The study used qualitative method and took place in Makassar City, South Sulawesi Province. The researchers applied phenomenological, normative, and anthropological approaches and used in-depth interviews, non-participatory observation, and documentation for data collection. The research instrument was interview guide and observation guide. After the data was collected, it was analyzed through three stages; data reduction, data presentation, and data verification/ conclusions drawing. The data triangulation involved credibility, dependability, confirmability, and transparency criteria. The results show that the role of congregational prayers on social problems in Makassar city during the Covid-19 pandemic is to educate the public directly to face the pandemic, encourage more self-reflection in interpreting the pandemic, and take wisdom from the situation.

Dawn song in superb fairy-wrens: a bird that seeks extrapair copulations during the dawn chorus

2008 ◽  
Vol 75 (2) ◽  
pp. 489-500 ◽  
Author(s):  
Anastasia H. Dalziell ◽  
Andrew Cockburn
Keyword(s):  
Dawn Chorus ◽  
Dawn Song

Design of objective lens for 200-kV high-resolution electron microscopes

1983 ◽  
Vol 41 ◽  
pp. 314-315
Author(s):  
K. Tsuno ◽  
T. Honda ◽  
Y. Harada ◽  
M. Naruse
Keyword(s):  
Optical Properties ◽  
Computer Technology ◽  
Axial Magnetic Field ◽  
Chromatic Aberration ◽  
Objective Lens ◽  
Resolution Electron ◽  
Correction Of Astigmatism ◽  
Three Stages ◽  
Electron Microscopes ◽  
Stage 1

Developement of computer technology provides much improvements on electron microscopy, such as simulation of images, reconstruction of images and automatic controll of microscopes (auto-focussing and auto-correction of astigmatism) and design of electron microscope lenses by using a finite element method (FEM). In this investigation, procedures for simulating the optical properties of objective lenses of HREM and the characteristics of the new lens for HREM at 200 kV are described.The process for designing the objective lens is divided into three stages. Stage 1 is the process for estimating the optical properties of the lens. Firstly, calculation by FEM is made for simulating the axial magnetic field distributions Bzc of the lens. Secondly, electron ray trajectory is numerically calculated by using Bzc. And lastly, using Bzc and ray trajectory, spherical and chromatic aberration coefficients Cs and Cc are numerically calculated. Above calculations are repeated by changing the shape of lens until! to find an optimum aberration coefficients.

Formation of Dislocation Channels in Neutron Irradiated Molybdenum

1972 ◽  
Vol 30 ◽  
pp. 672-673
Author(s):  
S. Mahajan
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ambient Temperature ◽  
Room Temperature ◽  
Channel Formation ◽  
Early Stages ◽  
Transmission Electron ◽  
Three Stages ◽  
Two Stages ◽  
Polycrystalline Molybdenum

The evolution of dislocation channels in irradiated metals during deformation can be envisaged to occur in three stages: (i) formation of embryonic cluster free regions, (ii) growth of these regions into microscopically observable channels and (iii) termination of their growth due to the accumulation of dislocation damage. The first two stages are particularly intriguing, and we have attempted to follow the early stages of channel formation in polycrystalline molybdenum, irradiated to 5×1019 n. cm−2 (E > 1 Mev) at the reactor ambient temperature (∼ 60°C), using transmission electron microscopy. The irradiated samples were strained, at room temperature, up to the macroscopic yield point.Figure 1 illustrates the early stages of channel formation. The observations suggest that the cluster free regions, such as A, B and C, form in isolated packets, which could subsequently link-up to evolve a channel.

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