scholarly journals The alignment of the axis of asymmetry in regenerating protoplasts of the moss, Ceratodon purpureus, is determined independently of axis polarity

Development ◽  
1996 ◽  
Vol 122 (1) ◽  
pp. 371-379 ◽  
Author(s):  
D.J. Cove ◽  
R.S. Quatrano ◽  
E. Hartmann
Keyword(s):  
White Light ◽  
Incident Light ◽  
Red Light ◽  
Opposite Polarity ◽  
Genetic Dissection ◽  
Axis Alignment ◽  
Directional Stimulus ◽  
Almost All ◽  
Relationship Of ◽  
The Relationship

Ceratodon protoplasts regenerate by polar outgrowth to form cell filaments. The kinetics of regeneration show that some cellular event has to be completed before regeneration can be initiated. The development of the regeneration axis is strongly influenced by light, with axis alignment and axis polarity being fixed independently. We define axis alignment as the relationship of the regeneration axis to the incident light, independent of polarity. Thus protoplasts regenerating directly towards, or directly away from the light source are defined as being similarly aligned but with opposite polarity. Protoplasts that regenerate in unidirectional red light form axes that are aligned parallel to the light direction, with about 70% being polarised towards the light and about 30% away. In unidirectional blue or white light, almost all protoplasts regenerate towards the light but axis alignment is determined less stringently. Re-orientation of protoplasts regenerating in unidirectional light shows that axis alignment is fixed between 8 and 9 hours before protoplasts regenerate and that axis polarity is fixed later. When protoplasts are removed from directional light to either non-directional light or to darkness, regeneration axes continue to be aligned by the earlier directional stimulus for at least 24 hours. Thus although axis alignment is fixed only about 8 hours before regeneration, in the absence of contradictory information about directionality in the light environment, protoplasts retain a memory of light direction for much longer. However, both reorientation and removal from a directional light field have profound effects on axis polarity; the pattern observed in undisturbed protoplasts being lost. To account for these observations, we propose that separate gradients are established independently to determine the alignment and polarity of the regeneration axis respectively. The alignment gradient is established rapidly and is steeper in red than in blue or white light, the polarity gradient is established slowly and is steeper in white or blue light than in red. These studies will now allow a genetic dissection of these processes in moss.

scholarly journals Autonomy and Attachment in Relationships with Parents in the Context of Students’ Real Self-Determination

2021 ◽  
Vol 12 (1) ◽  
pp. 113-125
Author(s):  
D.A. Krasilo ◽  
T.A. Krassilo ◽  
A.N. Zalipaeva
Keyword(s):  
Inverse Relationship ◽  
Self Determination ◽  
Education Environment ◽  
Cognitive Autonomy ◽  
Positive Correlations ◽  
Almost All ◽  
Relationship Of ◽  
Real Self ◽  
The Relationship

Objectives. Studying the relationship of autonomy and attachment in relationships with parents with real self-determination in students. Background. The growing world globalization, intercultural contradictions, confrontation within society seriously complicate the path of self-determination of modern youth. At the same time, due to technical progress and digitalization of the communication and education environment, there are significant transformations in the interaction of people in almost all spheres, including in the family. Therefore, the question of studying the most important aspects in the relationship of young people with their parents for real self-determination is especially acute. Study design. The work studied the indicators of real self-determination, attachment to parents and autonomy among students. The presence of a relationship between these parameters was established by calculating the Spearman correlation coefficient. Participants. 60 college students aged 18 to 21. Measurements. Methodology “Scale of adult attachment for close relationships”; autonomy questionnaire (authors O.A. Karabanova and N.N. Poskrebysheva); questionnaire “ORS” (author D.A. Krasilo). Results. An inverse relationship of indicators of real self-determination of students with the level of intimacy and the level of anxiety (scales of attachment to parents) was established. A direct relationship was revealed between the indicators of real self-determination and the level of autonomy. Conclusions. Proximity and anxiety (components of attachment) have a significant inverse relationship with the level of real self-determination in students. There are no significant connections between reliability (a component of attachment) and real self-determination in the sample under study. Emotional autonomy, cognitive autonomy, behavioral autonomy, and value autonomy have significant positive correlations with the level of real self-determination in students.

scholarly journals Automated Axis Alignment for a Nanomanipulator inside SEM and Its Error Optimization

Scanning ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Chao Zhou ◽  
Lu Deng ◽  
Long Cheng ◽  
Zhiqiang Cao ◽  
Shuo Wang ◽  
...  
Keyword(s):  
Average Method ◽  
Closed Loop ◽  
Alignment Method ◽  
Visual Servo ◽  
End Effector ◽  
Axis Alignment ◽  
Deposition Effect ◽  
Relationship Of ◽  
The Relationship ◽  
Error Optimization

In the motion of probing nanostructures, repeating position and movement is frequently happing and tolerance for position error is stringent. The consistency between the axis of manipulators and image is very significant since the visual servo is the most important tool in the automated manipulation. This paper proposed an automated axis alignment method for a nanomanipulator inside the SEM by recognizing the position of a closed-loop controlling the end-effector, which can characterize the relationship of these two axes, and then the rotation matrix can be calculated accordingly. The error of this method and its transfer function are also calculated to compare the iteration method and average method. The method in this paper can accelerate the process of axis alignment to avoid the electron beam induced deposition effect on the end tips. Experiment demonstration shows that it can achieve a 0.1-degree precision in 90 seconds.

scholarly journals Successful Aging: Perceptions of Adults Aged between 70 and 101 Years

2003 ◽  
Vol 56 (3) ◽  
pp. 223-245 ◽  
Author(s):  
Tess Knight ◽  
Lina A. Ricciardelli
Keyword(s):  
Older Adults ◽  
Content Analysis ◽  
Successful Aging ◽  
Almost All ◽  
Relationship Of ◽  
The Relationship ◽  
Aging Perceptions

In this research, content analysis was employed to investigate older adults' perceptions of successful aging and the relationship of these perceptions to definitions given in the literature to date. Participants were 18 males and 42 females between the ages of 70 and 101 years. Analyses revealed older adults mentioned only 1 or 2 criteria of successful aging if asked for a definition; however, when prompted, they rated almost all the criteria emerging from the literature as highly important. Participants reported adjusting to the situations they were in by compensating for losses that occurred and selecting activities that best suited their capabilities. Overall, older adults' perceptions of successful aging were similar to aspects identified in the literature. Not all aspects, however, were seen as important by all participants, and only low to moderate correlations were found between some aspects of successful aging.

scholarly journals Sanitasi Pemukiman pada Masyarakat dengan Riwayat Penyakit Berbasis Lingkungan

2020 ◽  
Vol 11 (1) ◽  
pp. 44
Author(s):  
Mei Ahyanti
Keyword(s):  
Test Results ◽  
Cross Sectional ◽  
Sanitation Facility ◽  
Geographical Regions ◽  
Cross Sectional Design ◽  
Multistage Sampling ◽  
Almost All ◽  
Relationship Of ◽  
The Relationship ◽  
The City

<p>Environmental-based diseases (PBL) are a health problem and occur in almost all geographical regions in the world. Every year, environment-based diseases are always found and reported to spread evenly at every Puskesmas in Bandar Lampung City. Settlement sanitation is an important aspect directly related to health and society. "Waterborne Disease" disease is still high, proving that there are still sanitation problems in settlements. The study aims to determine the relationship of settlement sanitation with environmental-based diseases in the city of Bandar Lampung. The study used a cross-sectional design, the population is all households in Bandar Lampung City. The sample was 384 respondents, taken randomly using multistage sampling. The results found 14,3% of respondents had a physical component of an unhealthy house, 45,3% of respondents had an unhealthy sanitation facility, 40,1% of the occupants of the house behaved in an unhealthy manner. The test results statistically concluded that there was a significant relationship between settlement sanitation and the incidence of environmental-based diseases.</p>

scholarly journals HUBUNGAN PENGETAHUAN DENGAN SIKAP ORANG TUA TERHADAP PENINGKATAN STIMULASI PERKEMBANGAN ANAK USIA 4-5 TAHUN

2019 ◽  
Vol 1 (2) ◽  
pp. 23-27
Author(s):  
Erlina Hayati ◽  
GF Gustina Siregar
Keyword(s):  
Growth And Development ◽  
Sampling Technique ◽  
Know How ◽  
Almost All ◽  
Relationship Of ◽  
The Relationship ◽  
Stimulation Of ◽  
Parental Interest

This article presents the results of research on the Relationship of Knowledge with Attitudes of Parents to Increased Stimulation of Development of Children 4-5 Years Old in XVIII Hamlet, PayaBakung Village, Hamparan Perak Subdistrict, Deli Serdang District in 2018 which aims to determine parents' knowledge of parental interest in stimulating . This research is an analytic survey that tries to explore how and why health phenomena occur. The population in this study were parents who had children aged 4-5 years as many as 30 people in VXII Hamlet, PayaBakung Village, Hamparan Perak District, Deli Serdang Regency. While the sampling technique in this study using total sampling technique is the number of population sampled as many as 30 people. From the results show that almost all parents who have children aged 4-5 years know how to stimulate good development for their children if children cannot experience delays that can be caused by lack of fulfillment in children, in which is the need to play. Childhood should be a period of play that is expected to foster maturity in growth and development, so that if the period is not used as well as possible, of course, it will eventually disrupt the growth of children.

A revision of the Neotropical genus Motonerus Hansen (Coleoptera: Hydrophilidae: Sphaeridiinae)

Zootaxa ◽  
2006 ◽  
Vol 1268 (1) ◽  
pp. 1 ◽  
Author(s):  
MARTIN FIKÁÑEK ◽  
ANDREW EDWARD Z. SHORT
Keyword(s):  
New Species ◽  
Costa Rica ◽  
New Records ◽  
Forest Litter ◽  
Montane Forest ◽  
Monotypic Genus ◽  
Almost All ◽  
Relationship Of ◽  
The Relationship ◽  
Key Characters

The previously monotypic genus Motonerus Hansen, 1989 is revised and redefined. Seven new species are described: Motonerus andersoni FikáÖek & Short, sp. n. (Costa Rica, Panama), M. apterus FikáÖek & Short, sp. n., (Venezuela, Colombia), M. depressus FikáÖek & Short, sp. n. (Colombia), M. hanseni FikáÖek & Short, sp. n. (Costa Rica), M. nublado FikáÖek & Short, sp. n. (Venezuela), M. oosternoides FikáÖek & Short, sp. n. (Panama), and M. problematicus FikáÖek & Short, sp. n. (Costa Rica). Two additional new species from Bolivia are left undescribed pending the collection of males. New records are given for the previously described species, M. obscurus Hansen, which had been composite with respect to M. hanseni sp. n. Almost all collections of the genus are associated with cloud and montane forest litter. A key to the species of the genus is provided along with comments on the relationship of the genus with others in the tribe Megasternini. The unusual flightless condition found in M. apterus and M. oosternoides is discussed. The male genitalia and other key characters are illustrated.

3D Microscopy using Confocal Microscopy

1996 ◽  
Vol 54 ◽  
pp. 270-271
Author(s):  
Ernst H. K. Stelzer ◽  
Steffen Lindek
Keyword(s):  
Incident Light ◽  
Three Dimensional ◽  
Numerical Aperture ◽  
Biological Research ◽  
Half Maximum ◽  
Optical Sectioning ◽  
Observation Volume ◽  
Spread Function ◽  
Relationship Of ◽  
The Relationship

The importance of confocal fluorescence microscopy in modem biological research results from its optical sectioning capability, which allows the three-dimensional analysis of thick specimens. This property is due to the combination of a point-like light source and a point-like detector, which restrict the illumination and detection volumes, respectively. Only the volume that is illuminated and detected is relevant to the confocal observation volume. The smaller it is, the better is the resolution. The performance of a confocal microscope is thus primarily specified by the spatial extent of the confocal point spread function (PSF). The extent can be estimated, e.g., by the volume enclosed by the isosurface at half maximum of the PSF (VHM – volume at half maximum).The relationship of the parameters that determine the lateral resolution of a microscope has been described by Ernst Abbé. The diameter of a light spot in the focal plane Δx is proportional to the wavelength λ of the incident light and inversely proportional to the numerical aperture of the optical system (N.A. = n, ∙ sin α).

scholarly journals The Practices of HRM, Human Capital, and Organizational Performance: A Literature Discussion in SME Context

2020 ◽  
Vol 5 (2) ◽  
pp. 192
Author(s):  
Jonner Simarmata
Keyword(s):  
Human Capital ◽  
Organizational Performance ◽  
Developed Countries ◽  
Literature Discussion ◽  
Mediating Role ◽  
Hrm Practices ◽  
Indirect Relationship ◽  
Almost All ◽  
Relationship Of ◽  
The Relationship

SMEs are a very important economic sector in almost all countries. Not only in developed countries but also in developing countries. The reason is, this sector contributes greatly to economic growth, especially to the GDP and employment. Therefore, all governments give a big support to the growth of this sector to contribute even more. The purpose of organizations including SMEs is to increase value for their stakeholders. Therefore, every manager tries hard to improve the performance of his company. In theory, one of the factors that influence organizational performance is HRM practice  (Armstrong & Taylor, 2014). However, experts argue that the relationship of HRM practices with organizational performance is an indirect relationship. Therefore, it is important to think about what variables can mediate this relationship. In the literature it is mentioned that human capital can act as a mediating variable in the relationship between HRM practices and organizational performance. However, in the context of SMEs, studies on human capital as a mediator are still rarely found. This present article aims to add to the literature on the mediating role of human capital in the relationship of HRM practices with organizational performance in the context of SMEs.

scholarly journals The Tabooed City

2021 ◽  
Vol 1 (1) ◽  
pp. 1-25
Author(s):  
Pritam Dey ◽  
Paridhi Kedia
Keyword(s):  
Political Stability ◽  
Urban Centers ◽  
Slum Dwellers ◽  
Planning Framework ◽  
Major Shift ◽  
Almost All ◽  
Relationship Of ◽  
First Time ◽  
The Relationship ◽  
The City

The year 2009 shall remain a milestone year in the century as the year which witnessed the major shift of diaspora in urban centers of India for the first time in human history. In this context, it is essential to understand the socio-spatial negotiations happening and may happen ahead between the physically growing city and the everyday life, work-live relationship of these invisible communities within the city. Does the growing city with an economic disparity and tremendous polarization of amenities consider their criticality and social aspects which are deeply rooted within these communities, thriving in the vast and continually changing physical fabric?The planning framework of the cities are manifestations of a bigger play of byelaws and demonstration of power often blurs out the existence of inculcating the ‘excluded’ quarters of the city within a holistic whole. As a result, these quarters grow sporadically within the city creating a sense of anarchy. This paper tries to seek the relationship of state and political hegemony with these “excluded zones” where profit, political stability, and a constant saga of the failure of proposals to regenerate a highly diverse settlement within the financial capital of India. The Dharavi slum in Mumbai is a sprawling 525‐acre area with shanty roofs and deleterious sanitation conditions, housing over one million residents diversified in terms of its religious and ethnic matrix along with a wide gamut of informal occupations which makes it unique. Dharavi’s residents like most slum dwellers around the world, live in illegal housing units lacking basic amenities and suffer from social exclusion.The paper would critically investigate the failure of community engagement and mobilization attempts forming cooperatives, formation of the several schemes across three decades and failures of almost all policies raising questions of redevelopment, how costing and finance schemes were mostly inefficient at large.The paper would also try to understand the scale and scalability of various neo-liberal redevelopment processes initiated by political will, largely vested in the interest of capitalistic gains and focusing less on addressing the complexities and issues of the existing socio-economic conditions.

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