scholarly journals Means of intracellular communication: touching, kissing, fusing

2021 ◽  
Vol 8 (6) ◽  
pp. 87-90
Author(s):  
Anne Spang
Keyword(s):  
Communication Systems ◽  
Cellular Level ◽  
Eukaryotic Cells ◽  
Common Theme ◽  
Holistic View ◽  
Intracellular Communication ◽  
Long Time ◽  
Do So

Eukaryotic cells are complicated factories that need ensure productivity and functionality on the cellular level as well as being able to communicate with their environment. In order to do so cells developed intracellular communication systems. For a long time, research focused mainly on the secretory/biosynthetic and endocytic routes for communication, leaving the communication with other organelles apart. In the last decade, this view has changed dramatically and a more holistic view of intracellular communication is emerging. We are still at the tip of the iceberg, but a common theme of touching, kissing, fusing is emerging as general principles of communication.

“As Slow as a Tortoise, and as Clever as a Hare.” Folktales as Lessons on Democracy, Equal Opportunities, and Human Rights among the Ndebele

2018 ◽  
Vol 28 (1) ◽  
Author(s):  
Lindiwe Ndlovu ◽  
Faith Sibanda
Keyword(s):  
Human Rights ◽  
Indigenous Knowledge ◽  
Indigenous People ◽  
Developing World ◽  
Equal Opportunities ◽  
Long Time ◽  
Animal Community ◽  
Do So

Indigenous African societies have, for a long time, been using their knowledge for the betterment of their lives. They have also demonstrated an ability to manipulate their immediate or remote surroundings to live sustainably. Those who claim to fight for equal and human rights in Africa do so under the misconception that they, and the developing world, have historically and inherently violated, and continue to violate, human rights in numerous ways. While this might not be completely dismissed, there is a plethora of evidence from African folktales to demonstrate that Africans have not only respected human rights, but have also encouraged equal opportunities for every member of their society. This article cross-examines Ndebele folktales with the intention of demonstrating that African indigenous knowledge exhibited through folktales was a well-organised system, which ensured respect for human rights for all members, regardless of their physical or social stature. Central to this discussion are the folktales which focus on the role played by the vulnerable members of the animal community, who replicate their human counterparts. Folktales are unarguably a creation by the indigenes and emanate from their socio-political experiences, as well as their observations of the surroundings. This suggests that indigenous people already had an idea about human rights as well as the need for equal opportunities since time immemorial. 

Engineering Management for Zone Construction of Ships

1985 ◽  
Vol 1 (04) ◽  
pp. 266-287
Author(s):  
Thomas Lamb
Keyword(s):  
Engineering Management ◽  
Shipbuilding Industry ◽  
Ship Construction ◽  
Production Department ◽  
Engineering Department ◽  
Traditionally Prepared ◽  
Hard Times ◽  
Long Time ◽  
The U.S ◽  
Do So

Zone construction has been proposed as the way for the U.S. shipbuilding industry to improve its productivity and survive the current hard times. Obviously as the production requirements for zone construction are different from traditional ship construction, so are the engineering requirements. While production could perform zone construction from traditionally prepared engineering, it would do so inefficiently and after waiting a long time for most of the engineering to be completed before they could start, thus defeating one of the goals of zone construction. The production department in a shipyard changing to zone construction will probably reorganize into major zone sections. To obtain maximum benefits from zone construction it is necessary for the engineering department to be like-organized and managed. The paper therefore discusses engineering aspects that are influenced by the change to zone construction

scholarly journals Sistem Komunikasi Suara Bawah Air dengan Metoda Simplex menggunakan Visible Light Communication (VLC)

2019 ◽  
Vol 7 (2) ◽  
pp. 253
Author(s):  
LUCIA JAMBOLA ◽  
ARSYAD RAMADHAN DARLIS ◽  
LITA LIDYAWATI ◽  
DZIKRI FACHRI HUSAENI
Keyword(s):  
Visible Light ◽  
Communication Systems ◽  
Light Transmission ◽  
Visible Light Communication ◽  
Color Filter ◽  
Underwater Communication ◽  
Test Results ◽  
Voice Communication ◽  
Yellow Color ◽  
Long Time

ABSTRAKSistem komunikasi suara bawah air telah dikenal sejak lama, diantaranya sonar dan akustik. Seiring perkembangan zaman dan kemajuan teknologi, kini hadir komunikasi dengan media transmisi cahaya tampak yaitu Visible Light Communication (VLC) yang dapat diterapkan pada komunikasi bawah air. Pada penelitian ini telah dilakukan komunikasi suara bawah air (simplex) menggunakan VLC, dengan media akuarium berisi air dan beberapa pengujian diantaranya menggunakan color filter, didapat hasil pengujian terbaik yaitu tegangan 4,4 Vpp dan frekuensi 3,003 kHz untuk color filter yellow, pengujian menggunakan lensa didapat hasil pengujian terbaik yaitu tegangan 4,4 Vp-p dan frekuensi 3,051 kHz untuk lensa (+50), dan pengujian terakhir menggunakan lampu UV didapat hasil pengujian terbaik dengan tegangan 4,4 Vp-p dan frekuensi 3,010 kHz. Implementasi sistem VLC ini menunjukkan hasil yang baik dan layak untuk diterapkan pada komunikasi suara bawah air (simplex).Kata kunci: VLC, Komunikasi Suara Bawah Air, Simplex. ABSTRACTUnderwater voice communication systems have been known for a long time, including sonar and acoustics. Along with the development and advancement of technology, now there is communication with visible light transmission media, namely Visible Light Communication (VLC) which can be applied to underwater communication. Under this study underwater voice communication (simplex) has been carried out using VLC, with aquarium media containing water and several tests including using a color filter, the best test results obtained are voltage 4.4 Vp-p and frequency 3.003 kHz for yellow color filter, testing using the lens obtained the best test results namely voltage 4.4 Vp-p and frequency 3.051 kHz for lenses (+50), and the last test using UV lights obtained the best test results with a voltage of 4.4 Vp-p and a frequency of 3.010 kHz. The implementation of the VLC system shows good and feasible results to be applied to underwater voice communication (simplex).Keywords: VLC, Underwater Voice Communication, Simplex.

Review Lectures on Senescence: I. The Causes of Aging

2001 ◽  
Vol 2001 (1) ◽  
Author(s):  
J. Maynard Smith
Keyword(s):  
Aging Process ◽  
Somatic Mutations ◽  
Cellular Level ◽  
Temperature Dependent ◽  
Theories Of Aging ◽  
Organ Systems ◽  
Two Phases ◽  
Effects Of Radiation ◽  
The Individual ◽  
Do So

Aging processes are defined as those that increase the susceptibility of individuals as they grow older to the factors that may cause death. Various possible theories of aging are considered, and evidence that may help to decide between them is discussed. Changes in different organ systems may be merely symptoms of some single aging process, or they may be largely independent and synchronized by natural selection. Even if different organ systems age independently, they may do so as a result of similar changes at a cellular level. Cellular theories of aging may have to take into account the effects of selection between the cells in a tissue. The effects of radiation and somatic mutation theories of aging are discussed. It is suggested that radiation shortens life by inducing somatic mutations but that normal aging is not to any important extent caused by somatic mutations, although it may result from changes in cells that have effects on the physiology of the individual similar to those of somatic mutations. Evidence is presented that in Drosophila and in mice there are two phases in the life-span. In Drosophila , there is an initial “aging” phase, which is irreversible and occurs at a rate approximately independent of temperature, and a second “dying” phase, which is temperature-dependent in rate and reversible at lower temperatures. Reproduced by permission. J. Maynard Smith, Review Lectures on Senescence: I. The Causes of Aging. Proc. R. Soc. London Ser. B 157 , 115-127 (1962).

Supports for and Barriers to Implementing Assistive Technology in Schools

2013 ◽  
pp. 1118-1130
Author(s):  
Susanne Croasdaile ◽  
Sharon Jones ◽  
Kelly Ligon ◽  
Linda Oggel ◽  
Mona Pruett
Keyword(s):  
Public School ◽  
Assistive Technology ◽  
Students With Disabilities ◽  
Administrative Support ◽  
Interview Data ◽  
Common Theme ◽  
Technology Coordinators ◽  
Barriers To Implementation ◽  
Technology In Schools ◽  
Do So

This study examines practitioners’ perceptions of the factors impacting the implementation of assistive technology (AT) for students with disabilities in five public school divisions. Participants were five members of division-wide AT facilitation teams. Interview data indicated barriers including lack of stakeholder buy-in with a focus on administrative support. Important supports included the development and maintenance of relationships with instructional staff and technology coordinators. The ongoing need to build stakeholder awareness of and skill in implementing assistive technology was a common theme. Participants perceived that, if empowered to do so, an AT facilitation team can overcome existing barriers to implementation.

scholarly journals “Genes Я us” – Of juis nie? Oor determinisme en voluntarisme by die mens met verwysing na homoseksualiteit

2004 ◽  
Vol 60 (1/2) ◽  
Author(s):  
Johan Buitendag
Keyword(s):  
Religious Experience ◽  
Genome Mapping ◽  
Frame Of Reference ◽  
Human Beings ◽  
Departure Point ◽  
Holistic View ◽  
Brain Functions ◽  
Definition Of ◽  
Sacred Canopy ◽  
Do So

“Genes Я us” – or not? About human determinism and voluntarism, with reference to homosexualityThis article has as its departure point the conviction of some that human genome mapping predisposes human beings genetically and as a consequence, the homosexual person becomes a mere victim of circumstances. Biological determinism and social construc-tionism are not mutually exclusive and although a person is orientated within a web of boundary matters, the depiction of a human being as imago Dei still prevails. A person has the freedom to choose and the responsibility to do so. One’s understanding of reality provides a frame of reference from which a definition of morality is derived. The suggestion of Nancey Murphey to understand reality as a “nonreductive physicalism” is followed. Reductionism in any form is subsequently avoided. A holistic view of humankind in terms of which religious experience is seen as more than some brain functions and people are embedded in a “sacred canopy”, is therefore advocated.

Evaluation of System Reconfigurability Based on Usable Excess

2014 ◽  
Author(s):  
Jeffrey D. Allen ◽  
Jason D. Watson ◽  
Christopher A. Mattson ◽  
Scott M. Ferguson
Keyword(s):  
Communication Systems ◽  
Assembly Line ◽  
Assembly Lines ◽  
Automated Assembly ◽  
Complex Engineered Systems ◽  
Future Needs ◽  
Key Factor ◽  
Long Time ◽  
Engineered Systems ◽  
Over Time

The challenge of designing complex engineered systems with long service lives can be daunting. As customer needs change over time, such systems must evolve to meet these needs. This paper presents a method for evaluating the reconfigurability of systems to meet future needs. Specifically we show that excess capability is a key factor in evaluating the reconfigurability of a system to a particular need, and that the overall system reconfigurability is a function of the system’s reconfigurability to all future needs combined. There are many examples of complex engineered systems; for example, aircraft, ships, communication systems, spacecraft and automated assembly lines. These systems cost millions of dollars to design and millions to replicate. They often need to stay in service for a long time. However, this is often limited by an inability to adapt to meet future needs. Using an automated assembly line as an example, we show that system reconfigurability can be modeled as a function of usable excess capability.

A Fault Detection Model for Large-Scale Circuit Communication Systems

2014 ◽  
Vol 651-653 ◽  
pp. 383-386
Author(s):  
Wen Qun Duan ◽  
Yang Yun
Keyword(s):  
Fault Detection ◽  
Traditional Method ◽  
Communication Systems ◽  
Wavelet Transformation ◽  
Large Scale ◽  
Fault Location ◽  
Detection Method ◽  
Wavelet Function ◽  
Detection Model ◽  
Long Time

In the fault detection process for large-scale circuit communication systems, the traditional method needs to exam each node to determine whether a failure exists. It is complex and needs long time which causes a certain lagging. To avoid the defects mentioned above, this paper proposes a fault detection method based on wavelet transformation that calculates the changes of coefficients of the wavelet transform and the similarity between wavelet function and the signal. This kind of fault detection can pre-process the failure might occur and effectively improve the efficiency. The experimental results approve that the proposed method can predicate the fault location and reach satisfied effects.

Review Lecture: Two atoms—the basis of the steel industry

1969 ◽  
Vol 308 (1495) ◽  
pp. 437-446
Keyword(s):  
Steel Industry ◽  
Parent Material ◽  
Long Time ◽  
Modern Knowledge ◽  
Civilized World ◽  
Do So

For 2000 years or more steel and its parent material, iron, have dominated the civilized world and it appears likely that they will continue to do so for a long time ahead. Steel has achieved this position because it is unique in possessing in combination the three characteristics of cheapness, strength and versatility. I propose to review the reasons behind these characteristics and to describe some of the ways in which modern knowledge in numerous branches of science has helped the steady advance in the technology of steelmaking. It will be shown that ferrous materials could not have achieved their position without a partnership with carbon, a material which is unique in other ways. Naturally numerous simplifications will be necessary.

scholarly journals Animism and Language Evolution

2021 ◽  
Author(s):  
Eldar T. Hasanov
Keyword(s):  
Communication Systems ◽  
Language Evolution ◽  
Natural World ◽  
Evolution Of Language ◽  
Early Humans ◽  
Language Communication ◽  
Ritual Speech ◽  
The Relationship ◽  
Evolutionarily Stable ◽  
Do So

The exact mechanism of the evolution of language remains unknown. One of the central problems in this field is the issue of reliability and deceit that can be characterized in terms of honest signaling theory. Communication systems become vulnerable to dishonesty and deceit when there are conflicting interests between the signaler and receiver. The handicap principle explains how evolution can prevent animals from deceiving each other even if they have a strong incentive to do so. It suggests that the signals must be costly in order to provide accurate and reliable communication between animals. Language-like communication systems, being inherently vulnerable to deception, could only evolve and become evolutionarily stable if they had some mechanisms that can make the communication hard to fake and trustworthy. One of the theories that try to solve the problem of reliability and deception is the ritual/speech coevolution hypothesis. According to this theory, hard-to-fake rituals evolved concurrently with language - by reinforcing trust and solidarity among early humans and preventing deceitful and manipulative behavior within the group. One of the drawbacks of this hypothesis is that the relationship between ritual and speech is too indirect. Rituals could not have a real-time effect on every instance of speech and encompass all aspects of everyday language communication. Therefore they are not efficient enough to provide instant verification mechanisms to guarantee honest communication. It is more likely that the animistic nature of language itself, rather than ritual, was the handicap-like cost that helped to ensure the reliability of language during its origin. The belief in the parallel dimension of animistic spirits emerged concurrently with language as a hard-to-fake attestation mechanism that ensured inviolability of one's speech. The notion that animism emerged because of early behaviorally modern humans’ incoherent and flawed observations about the natural world is unlikely, because it implies a very improbable scenario, that there had been a more coherent and rational pre-animistic period which later degraded to animistic one.

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