A NEW MICROSCOPIC VIEW OF NUCLEAR DEFORMATION

1994 ◽  
Vol 03 (04) ◽  
pp. 1119-1147 ◽  
Author(s):  
Z.-P. LI ◽  
M.W. GUIDRY ◽  
C.-L. WU ◽  
D.H. FENG
Keyword(s):  
Dynamical Symmetry ◽  
Point Of View ◽  
Nuclear Deformation ◽  
Direct Influence ◽  
Heavy Nuclei ◽  
Normal Deformation ◽  
Nilsson Model ◽  
Subsidiary Roles ◽  
Microscopic Origin ◽  
Normal Parity

The microscopic origin of deformation for heavy nuclei is discussed. Evidence is presented that the systematic features of nuclear deformation are determined primarily by filling of the normal-parity shell model orbitals of the valence shells, and that the abnormal-parity orbitals play crucial but subsidiary roles. This is in accord with the point of view underlying the Fermion Dynamical Symmetry Model. In addition, we demonstrate that the deformation systematics of the FDSM are consistent with those of the Nilsson model, despite their very different starting points, and that the assumptions of the FDSM are consistent with the assertion that the n-p quadrupole-quadrupole residual interaction is the essential reason for deformation. Finally, application of the same principles to superdeformation suggests that abnormal parity orbitals have a much more direct influence on superdeformation than on normal deformation.

Symmetry and the Origin of Nuclear Deformation

1993 ◽  
Vol 02 (supp01) ◽  
pp. 17-49 ◽  
Author(s):  
MIKE GUIDRY ◽  
CHENG-LI WU
Keyword(s):  
Shell Model ◽  
Dynamical Symmetry ◽  
Point Of View ◽  
Residual Interaction ◽  
Nuclear Deformation ◽  
Direct Influence ◽  
Normal Deformation ◽  
Nilsson Model ◽  
Microscopic Origin ◽  
Normal Parity

Evidence is presented that the systematic features of nuclear deformation are determined primarily by filling of the normal-parity shell model orbitals of the valence shells, and that abnormal-parity orbitals play important but sec ondary roles in the microscopic origin of deformation. This contradicts many common ideas concerning deformation, but is in accord with the point of view underlying the Fermion Dynamical Symmetry Model. We argue that the deformation systematics of the FDSM and the Nilsson model are mutually consistent, and that in the FDSM the n−p quadrupole residual interaction is responsible for deformation. The same principles applied to superdeformation indicate that abnormal parity orbitals have a much more direct influence on superdeformation than on normal deformation.

scholarly journals «Beer Hall Putsch» in the US press assessment

2018 ◽  
Vol 7 (2) ◽  
pp. 192-196
Author(s):  
Margarita Igorevna Tulusakova
Keyword(s):  
Press Reaction ◽  
Point Of View ◽  
Information Support ◽  
Press Coverage ◽  
Direct Influence ◽  
The Press ◽  
The Us ◽  
American Press ◽  
Beer Hall

The paper studies the problem of the American press reaction to an attempted coup in Germany in 1923. The reasons for the Beer Hall Putsch from the point of view of the press were studied. The author shows the process of information accumulation about the putsch, the role and attitude of various representatives of the US press to it, and the international reaction to the Nazism. The role of Hitler in the coup attempt is analyzed. The author proves that there was direct influence of large American newspapers chief editors opinions on the information about the coup in Germany. The analysis of the US press reaction to the Beer Hall Putsch shows that American newspapers during the first days of the events observed these events closely. Moreover, the trends typical for the central press (coverage of international events, desire for analytics and forecasts) were also characteristic of small local periodicals. The Beer Putsch information support shows that in 1923 the US press was clearly divided in assessments about the most important issue: to support the rebels or to condemn them. The paper shows how the image of the Beer Hall Putsch influenced the policy of aggressors pacification in the future.

Dynamical symmetry in heavy nuclei and complementarity of bosons and fermions

1994 ◽  
Vol 570 (1-2) ◽  
pp. 77-85 ◽  
Author(s):  
Da Hsuan Feng ◽  
Pan Xing-Wang
Keyword(s):  
Dynamical Symmetry ◽  
Heavy Nuclei

scholarly journals A Two-Door Airplane Boarding Approach When Using Apron Buses

2018 ◽  
Vol 10 (10) ◽  
pp. 3619 ◽  
Author(s):  
Camelia Delcea ◽  
Liviu-Adrian Cotfas ◽  
Nora Chiriță ◽  
Ionuț Nica
Keyword(s):  
Turnaround Time ◽  
Agent Based Modeling ◽  
Point Of View ◽  
New Method ◽  
Direct Influence ◽  
Agent Based ◽  
Long Term Performance ◽  
Term Performance ◽  
New Infrastructure

Boarding is one of the major processes of airplane turnaround time, with a direct influence on the airline companies’ costs. From a sustainable point of view, a faster completion of the boarding process has impact not only on the airline company’s long-term performance, but also on customers’ satisfaction and on the airport’s possibility of offering more services without additional investments in new infrastructure. Considering the airplane boarding strategies literature, it can be observed that the latest papers are dealing with developing faster boarding strategies, most of them considering boarding using just one-door of the aircraft. Even though boarding on one-door might be feasible for the airports having the needed infrastructure and sufficient jet-bridges, the situation is different in European airports, as the use of apron buses is fairly common. Moreover, some of the airline companies have adapted their boarding pass in order to reflect which door one should board once they get down from the bus. While using these buses, the boarding strategies developed in the literature are hard to find their applicability. Thus, a new method for boarding on two-door airplanes when apron buses are used is proposed and tested against the actual boarding method. A model is created in NetLogo 6.0.4, taking advantages of the agent-based modeling and used for simulations. The results show a boarding time reduction of 8.91%.

scholarly journals APPROACHES TO STAFF BEHAVIOUR FROM THE PERSPECTIVE OF OPERATIONS MANAGEMENT

10.26458/1915 ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 83-93
Author(s):  
Raluca CRETOIU
Keyword(s):  
Organizational Culture ◽  
Operations Management ◽  
Point Of View ◽  
The Other ◽  
Successful Implementation ◽  
Direct Influence ◽  
Staff Management ◽  
Efficient Management ◽  
Operational Management ◽  
The One

Operational management or operations management, as established in many speciality papers, is an area of activity that is particularly important for the successful implementation of business activities and not only. From the point of view of the connections that can be established between this concept and the one regarding the staff management, we note the direct influence that the degree of motivation in the work, the commitment and the connection to the specific values of a certain organizational culture have on the performance of the subsidiary activities of the operations management. Effective operations management implies not only the optimal use of the organization’s resources, but also the engagement of staff through a behaviour whose specific features emphasize responsibility, teamwork, transparency, and commitment to assigned tasks. This article highlights the need for the staff to be connected as well as possible to the organization’s values and objectives; the efficient management of operations within it is closely connected to the level of harmonization between the values and objectives, on the one hand, and the interests and motivation of the employees, on the other hand. 

scholarly journals “RIEMPI IL CALICE, O COPPIERE”: LA PRATICA DEL MAJLIS SUFI COME BANCHETTO DEI BEATI NEL PARADISO ATTRAVERSO LA LETTERATURA SUFI MEDIEVALE

2021 ◽  
Author(s):  
Luca Patrizi
Keyword(s):  
Formation Process ◽  
Point Of View ◽  
Direct Influence ◽  
Spiritual Power ◽  
Real Relationship ◽  
Specific Study ◽  
Its Analysis ◽  
And Function ◽  
Practical Dimension

Riassunto: Nell’ambito del Sufismo delle confraternite, la sessione di dhikr rituale collettiva, solitamente definita majlis, mostra caratteristiche analoghe anche in contesti molto differenti. Nonostante questa pratica ricopra un’importanza e una funzione assolutamente primarie nel contesto del Sufismo, alla sua analisi non è ancora stato dedicato alcuno studio specifico. In particolare, nessuna attenzione è stata portata fino ad oggi al suo processo di formazione, e questo non soltanto nella sua dimensione di pratica, ma anche e soprattutto dal punto di vista simbolico e metaforico. In questo articolo cercherò quindi di mettere in luce come la pratica del majlis sufi mostri l’influenza diretta di due complesse metafore teologiche: la metafora della regalità, che si esercita sul majlis sufi grazie al rapporto, allo stesso tempo metaforico e reale, che intercorre tra regalità e potere spirituale, e la metafora del banchetto dei beati nel paradiso. Abstract: Within the context of Brotherhood Sufism, the collective ritual dhikr session, usually referred to as majlis, shows similar characteristics even in very different contexts. Although this practice has an absolutely primary importance and function in the context of Sufism, no specific study has yet been devoted to its analysis. In particular, no attention has been paid until now to its formation process, not only in its practical dimension, but also and above all from a symbolic and metaphorical point of view. In this paper I will therefore try to highlight how the practice of Sufi majlis shows the direct influence of two complex theological metaphors: the metaphor of kingship, which is exercised on Sufi majlisthrough the metaphorical and real relationship between kingship and spiritual power, and the metaphor of the banquet of the blessed in paradise.

scholarly journals U(6) dynamical and quasi-dynamical symmetry in strongly deformed heavy nuclei

2018 ◽  
Vol 194 ◽  
pp. 05002 ◽  
Author(s):  
H.G. Ganev
Keyword(s):  
State Space ◽  
Effective Charge ◽  
Good Description ◽  
Energy Levels ◽  
Dynamical Symmetry ◽  
Microscopic Structure ◽  
Heavy Nuclei ◽  
Ground Band ◽  
Model Hamiltonian ◽  
Collective States

The low-lying collective states of the ground, β and γ bands in154Sm and238U are investigated within the framework of the microscopic proton-neutron symplectic model (PNSM). For this purpose, the model Hamiltonian is diagonalized in a U(6)-coupled basis, restricted to the symplectic state space spanned by the fully symmetric U(6) vectors. A good description of the energy levels of the three bands under consideration, as well as the intraband B(E2) transition strengths between the states of the ground band is obtained for the two nuclei without the use of an effective charge. The calculations show that when the collective quadrupole dynamics is covered already by the symplectic bandhead structure, as in the case of154Sm, the results show the presence of a very good U(6) dynamical symmetry. In the case of238U, when we have an observed enhancement of the intraband B(E2) transition strengths, then the results show small admixtures from the higher major shells and a highly coherent mixing of different irreps which is manifested by the presence of a good U(6) quasi-dynamical symmetry in the microscopic structure of the collective states under consideration.

scholarly journals Sorption ability of the soil and its impact on environmental contamination

2014 ◽  
Vol 7 (4) ◽  
pp. 177-183 ◽  
Author(s):  
Šárka Hřibová ◽  
Helena Zlámalová Gargošová ◽  
Milada Vávrová
Keyword(s):  
Point Of View ◽  
Positive Finding ◽  
Direct Influence ◽  
Physical Point ◽  
Soil Matrix ◽  
Sorption Ability ◽  
Allium Cepa L ◽  
Surface Active ◽  
Secondary Contamination ◽  
Active Substances

ABSTRACT From the physical point of view, soil is a heterogenic polydisperse system. It often becomes a place of a secondary contamination during extinguishing uncontrolled areal fires in nature. Foam extinguishing agents (FEAs), used at these events, basically contain surface active substances and perfluorinated compounds. These tend to be captured in the soil matrix due to their specific properties. Contaminants could be partly flushed out with rainwater, which causes several times dilution of contamination and lower ecotoxic activity. However in the dry season, foam solution infiltrates into the bed soil without any dilution. This study deals with the direct influence of soil the sorption complex on ecotoxicity of five selected FEAs, i.e. Expyrol F 15, Finiflam F 15, Moussol APS F 15, Pyrocool B and Sthamex F 15. The substances tested were prepared in concentration of work solution and then applied on standard soil matrix LUFA 2.3. For experimental purposes, a column infiltration apparatus was designed and compiled. Filtrates were collected and then tested using the plant organisms Sinapis alba and Allium cepa L. The study compared ecotoxicologic effects of filtrates with an original work solution. Moussol APS F 15 seems to be the least ecotoxic of the FEAs tested. A direct influence of soil sorption complex onto ecotoxicity reduction was also established. This finding demonstrates the sorption ability of soil particles and ion exchange activity of the soil matrix. It is a positive finding for biota of aquatic environment, yet at the expense of those in soil

Sign in / Sign up

Export Citation Format

Share Document