scholarly journals A tentative model on effective army combat tactics

2020 ◽  
Vol 39 (5) ◽  
pp. 490-504
Author(s):  
Peter Thunholm ◽  
Lars Henåker
Keyword(s):  
Tentative Model

Hormonal Control of Fish Reproductive Behavior: Brain–Gonadal Steroid Interactions

1982 ◽  
Vol 39 (1) ◽  
pp. 36-47 ◽  
Author(s):  
L. S. Demski ◽  
P. J. Hornby
Keyword(s):  
Reproductive Behavior ◽  
Sex Steroids ◽  
Anterior Commissure ◽  
Direct Action ◽  
Hormonal Control ◽  
Sufficient Evidence ◽  
Brain Areas ◽  
Behavioral Systems ◽  
Goldfish Carassius Auratus ◽  
Tentative Model

A number of hormones are known to influence reproductive behavior in teleosts. The best studied in this regard are the sex steroids estradiol and testosterone. Sufficient evidence is available to permit the outlining of possible modes of action of these hormones on mechanisms controlling reproductive responses in fishes. Autoradiographic studies using tritium-labeled steroids have revealed several brain areas with neurons that concentrate testosterone and estradiol in both males and females. An area near the anterior commissure (preoptic region and parts of the area ventralis telencephali) is of primary interest for behavioral systems. Electrophysiological experiments in goldfish (Carassius auratus) have demonstrated that both hormones strongly influence olfactory mechanisms. These effects may be mediated by steroid feedback on brain areas involved in centrifugal control of the olfactory bulbs. The neurological substrates for several behaviors which are thought to be androgen dependent have been studied using classical neurobehavioral methods. These include: spawning and sperm release in goldfish and sunfish (Lepomis sp.) and courtship and nestbuilding in sunfish. As of yet, a direct action of sex steroids on these systems has not been demonstrated; however, they all relate to the steroid-concentrating area mentioned above. Some of the systems are incorporated into a tentative model of the neural–hormonal mechanisms controlling reproductive behavior in male goldfish.Key words: reproductive behavior, fishes, brain, hormones, sex steroids, olfaction

scholarly journals Public Sector Managers and Ethical Dilemmas

2004 ◽  
Vol 10 (1) ◽  
pp. 25-37
Author(s):  
Lisa Catherine Ehrich ◽  
Neil Cranston ◽  
Megan Kimber
Keyword(s):  
Public Sector ◽  
Ethical Dilemma ◽  
Ethical Dilemmas ◽  
Public Life ◽  
The Public ◽  
High Profile ◽  
Public Servant ◽  
Tentative Model ◽  
Fertile Ground ◽  
Public Sector Managers

ABSTRACTControversies surrounding the behaviour of ministers and high profile leaders seem to be commonplace in public life. That there has been a resurgence of interest in the study of ethics is not surprising. The spotlight on ethics in the public domain has been due in part to the crisis in confidence about government and a lack of public trust in organisations. Furthermore, a complex organisational environment where managers are being required to juggle a ‘multitude of competing obligations and interests’ (Cooper 1998, p. 244) has provided fertile ground for the emergence of ethical dilemmas. In this paper we put forward a tentative model that reveals important inputs that bear upon an individual, such as a public sector manager, who is confronted with an ethical dilemma. In the final part of the paper we illustrate the model's efficacy with an ethical dilemma described by a retired senior public servant to determine whether the model works in practice.

scholarly journals YEAST IN SOUTHWEST MONSOON RAINWATER

2020 ◽  
Vol 3 (3) ◽  
pp. 4-8
Author(s):  
SHEELA PAL
Keyword(s):  
Phase Contrast ◽  
Monsoon Rainfall ◽  
Southwest Monsoon ◽  
Yeast Cells ◽  
Successful Isolation ◽  
Tentative Model ◽  
Bacteria And Fungi ◽  
Southwest Monsoon Rainfall ◽  
Ascomycetous Yeasts ◽  
Extreme Care

Strong evidence of the presence of bacteria and fungi in the tropospheric boundary layer is available in the literature. We report successful isolation of unique morphotypes of wild ascomycetous yeasts from rainwater samples collected directly in sterile containers, taking extreme care to avoid ambient contamination. Direct and quick visualization of fresh rainwater samples under a phase contrast microscope indicated the sporadic presence of yeast cells. Further confirmation of the presence of yeast was obtained by plating of rainwater on a medium with antibiotics to generate pure colonies. We described their characteristics while molecular identification revealed it as Candida tropicalis. Yeast species  could contribute valuable knowledge about yeast transportation in the atmosphere. However, knowledge is insufficient about the yeast deposited from the atmosphere and its transportation across the atmosphere. We report and discuss these interesting and exciting results which are useful in understanding the microbiological dimension of meteorology and the southwest monsoon rainfall in the light of present discourse on global warming and climate change. We offer a tentative model for a possible source, role, and fate of the yeasts in rainwater.

scholarly journals The Efficient and Tentative Model for Extenics Replications of the Moveable Robots

2019 ◽  
Vol 13 (1) ◽  
pp. 1-8
Author(s):  
Koram Samuel Sakyi ◽  
Jian-Fei Lu
Keyword(s):  
Sensory System ◽  
The Body ◽  
Elementary Level ◽  
Human Beings ◽  
Mechanical Device ◽  
Muscle System ◽  
Main Structure ◽  
Sensory Data ◽  
Body Move ◽  
Tentative Model

Background: On the most elementary level, you and I (human beings) were created with five main mechanisms (or parts): • A body which is termed as the main structure of the human being. • A sensory system that takes certain information around the body and the immediate environment. • A muscle system to aid the body move easily. • A control base to trigger the muscles and sensors. • A brain system that develops sensory data and tells the muscles what to do in other words the way forward. Obviously, we likewise have some imperceptible qualities, for example, intellect and ethics, among others but on an absolute corporeal level. Robots, on the other hand, can be created with five main mechanisms or more. Objectives: This research aims at implementing robots in some tedious jobs that as supposed to be executed by human beings in various factories and industries. This study also presents the practical and tentative model for Extenics replications of the moveable mechanical device (robot) useful on VIPRO stage. Methods: Momentary antiquity and indication of the pertinent hypothetical ideas are provided. The intelligent boundary for drawn-out switch uses a novel element for synthetic intelligence which is drawn-out control (Extenics) to expand DHFPC switch rapid enactment of mobile robots. Result: Applying Extenics specific methods and application in vague interplanetary result in a novel, advanced application for the VIPRO stage which can be used to feign and device innovative switch approaches of moveable robots.

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