scholarly journals Transfer-tensor description of memory effects in open-system dynamics and multi-time statistics

2021 ◽  
Author(s):  
Stefano Gherardini ◽  
Andrea Smirne ◽  
Susana F Huelga ◽  
Filippo Caruso
Keyword(s):  
System Dynamics ◽  
Open System ◽  
Relevant Information ◽  
Memory Effects ◽  
Markovian Dynamics ◽  
Boson Case ◽  
Local Measurements ◽  
The One

Abstract The non-Markovianity of an arbitrary open quantum system is analyzed in reference to the multi-time statistics given by its monitoring at discrete times. On the one hand, we exploit the hierarchy of inhomogeneous transfer tensors, which provides us with relevant information about the role of correlations between the system and the environment in the dynamics. The connection between the transfer-tensor hierarchy and the CP-divisibility property is then investigated, by showing to what extent quantum Markovianity can be linked to a description of the open-system dynamics by means of the composition of 1-step transfer tensors only. On the other hand, we introduce the set of stochastic transfer tensor transformations associated with local measurements on the open system at different times and conditioned on the measurement outcomes. The use of the transfer-tensor formalism accounts for different kinds of memory effects in the multi-time statistics and allows us to compare them on a similar footing with the memory effects present in non-monitored non-Markovian dynamics, as we illustrate on a spin-boson case study.

De la gestión local a la gobernanza global: actores e interacciones multiniveles en la gestión del agua en la ciudad de México

2011 ◽  
Vol 1 (3) ◽  
pp. 34-66
Author(s):  
Joyce Valdovinos
Keyword(s):  
Private Sector ◽  
Water Governance ◽  
The State ◽  
Public Authorities ◽  
Service Contracts ◽  
Governance Model ◽  
Role Of The State ◽  
The One

The provision of water services has traditionally been considered a responsibility of the state. During the late 1980s, the private sector emerged as a key actor in the provision of public services. Mexico City was no exception to this trend and public authorities awarded service contracts to four private consortia in 1993. Through consideration of this case study, two main questions arise: First, why do public authorities establish partnerships with the private sector? Second, what are the implications of these partnerships for water governance? This article focuses, on the one hand, on the conceptual debate of water as a public and/or private good, while identifying new trends and strategies carried out by private operators. On the other hand, it analyzes the role of the state and its relationships with other actors through a governance model characterized by partnerships and multilevel networks.Spanish La provisión del servicio del agua ha sido tradicionalmente considerada como una responsabilidad del Estado. A finales de la década de 1980, el sector privado emerge como un actor clave en el suministro de servicios públicos. La ciudad de México no escapa a esta tendencia y en 1993 las autoridades públicas firman contratos de servicios con cuatro consorcios privados. A través de este estudio de caso, dos preguntas son planteadas: ¿Por qué las autoridades públicas establecen partenariados con el sector privado? ¿Cuáles son las implicaciones de dichos partenariados en la gobernanza del agua? Este artículo aborda por una parte, el debate conceptual del agua como bien público y/o privado, identificando nuevas tendencias y estrategias de los operadores privados. Por otra parte, se analizan el rol y las relaciones del Estado con otros actores a través de un modelo de gobernanza, definido en términos de partenariados y redes multi-niveles.French Les services de l'eau ont été traditionnellement considérés comme une responsabilité de l'État. À la fin des années 1980, le secteur privé est apparu comme un acteur clé dans la fourniture de certains services publics. La ville de Mexico n'a pas échappé à cette tendance et en 1993, les autorités publiques ont signé des contrats de services avec quatre consortiums privés. À travers cette étude de cas, nous nous interrogerons sur deux aspects : pourquoi les autorités publiques établissentelles des partenariats avec le secteur privé ? Quelles sont les implications de ces partenariats sur la gouvernance de l'eau ? Cet article s'intéresse, d'une part, au débat conceptuel sur l'eau en tant que bien public et/ou privé, en identifiant les tendances nouvelles et les stratégies menées par les opérateurs privés. D'autre part y sont analysés le rôle de l'État et ses relations avec d'autres acteurs à travers un modèle de gouvernance, défini en termes de partenariats, et des réseaux multi-niveaux.

scholarly journals The Role of Public Relations in the Delivery of Forestry Services in Ghana

2017 ◽  
Vol 50 (1) ◽  
pp. 37-43
Author(s):  
Kofi Ampadu Boateng ◽  
Petra Hlaváčková
Keyword(s):  
Public Relations ◽  
Random Sampling ◽  
Social Relationship ◽  
Relevant Information ◽  
Consumer Awareness ◽  
Interview Schedule ◽  
Forestry Commission ◽  
Forestry Services

Abstract Public Relations (PR) is a natural, vital as well as persistent component of human social relationship. It may involve a campaign designed to develop goodwill for an individual or an organisation. There are, however, few researches relating to public relations and delivery of forestry services. The aim of this study was to examine the role public relations play in the delivery of forestry services with Ghana as case study. In order to obtain the relevant information for this research, an interview schedule was developed and used to gather information from regional heads and a set of questionnaire administered to the rest of the participants through random sampling. The research further affirmed that PR increases consumer awareness and identified radio and television to be the commonest PR tools used by the Ghana Forestry Commission (GFC). The study concluded that PR to a greater extent is the foundation of an organisation and its activities influence the execution and delivery of services. GFC is, however, urged to explore other inexpensive yet effective PR tools and strategies in order to broaden their reach.

Enabling characteristics of new budgeting practice and the role of controller

2016 ◽  
Vol 13 (1) ◽  
pp. 31-56 ◽  
Author(s):  
Tiina Henttu-Aho
Keyword(s):  
Design Methodology ◽  
Relevant Information ◽  
Management Control ◽  
Holistic View ◽  
New Developments ◽  
Role Change ◽  
Content Type ◽  
Paper Company

Purpose This paper aims to investigate the emergence of the enabling characteristics of new budgetary practices and their implications for the role of controller. Design/methodology/approach The longitudinal perspective of this qualitative case study is based on interviews of controllers and managers involved in budgetary work. This study monitored the four enabling characteristics of management control, namely, repair, internal transparency, global transparency and flexibility (Adler and Borys, 1996), related to the new budgeting practices in one global paper company. Findings The findings of the study demonstrate that the implementation of rolling forecasting was a major attempt at “repair” to remedy the incompleteness of accounting information, which made controllers experts in producing and delivering more realistic forward-looking information in the organization. The increasing internal and global transparency of new budgetary practices enabled controllers at various levels of organization to develop new competences, which helped controller network to build a holistic view of the totality of control and supply more relevant information in organization. Moreover, the inherent flexibility of the system was a major condition for improving organizational effectiveness in budgetary work. However, the study shows that the controller’s attitude towards enabling formalization is not necessarily positive if the system is not aligned with professional mindset and competence. Originality/value This study adds to the understanding of the complementarity between new developments of budgeting and controller role by addressing the enabling uses of management control systems, which have the potential to enhance the controller role change.

The Etappe Kanaren: A case study of the secret supply of the German Navy in Spain during the Second World War

2018 ◽  
Vol 30 (3) ◽  
pp. 472-487 ◽  
Author(s):  
Juan J. Díaz Benítez
Keyword(s):  
Active Role ◽  
Second World War ◽  
Primary Sources ◽  
World War ◽  
The One ◽  
Intense Activity ◽  
German Navy ◽  
Second World

The secret supply of the German Navy during the Second World War has scarcely been studied until now. The goal of this article is to study one of the more active supply areas of the Etappendienst at the beginning of the war, the one known as Etappe Kanaren, as part of the Grossetappe Spanien-Portugal. In this research primary sources from German Naval War Command have been consulted. Among the main conclusions, it should be pointed out, on the one hand, the intense activity to support the Kriegsmarine during the first years of the war, despite the distance from mainland Spain and the British pressure, which finally stopped the supply operations. On the other hand, we have confirmed the active role of the Spanish government in relation to the Etappendienst: Spanish authorities allowed the supply operations, but pressure from the Allies forced the Spanish government to impede these activities.

scholarly journals Does Protection Really Matter? A Case Study from Central European Oak Forests

Diversity ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 6
Author(s):  
Kamila Reczyńska ◽  
Krzysztof Świerkosz
Keyword(s):  
Oak Forests ◽  
Forest Communities ◽  
Nature Protection ◽  
The Face ◽  
Phytosociological Relevés ◽  
Sw Poland ◽  
The One ◽  
Duration Of Protection

In the face of a rapidly changing global environment, detailed research into the actual role of protected areas (PAs) in preventing the destruction of ecosystems and the loss of biodiversity became particularly important. Using 304 phytosociological relevés of oak forests from SW Poland, we monitored their state of preservation reflected by the share of synanthropes (Ws-c index) in relation to (i) duration of protection, (ii) status of protected area, (iii) main topographic factors, and (iv) bedrock type. We show that the Ws-c index of studied forests depends primarily on the habitat conditions, especially bedrock type, while both the duration and status of protection are not relevant. The most disturbed are forests developing on serpentine substrates regardless of whether they are protected or not. Within the rest of the investigated sites, the Ws-c index is significantly lower and does not meaningfully differ between protected and unprotected areas. On the one hand, our results suggest that the fact of establishing protection does not ensure a favourable state of conservation of forest communities. On the other hand, well-preserved forest communities can also be expected outside PAs what makes them an important target for nature protection in the future.

scholarly journals Evaluation of Rural Municipalities’ (Dehyari) Performance in Realization of Social Sustainability of the Villages Case study of central part of Nimroz city of Sistan

2020 ◽  
Vol 24 ◽  
pp. 30
Author(s):  
Abbas Palash ◽  
Hamid Ja’fari ◽  
Hadi Ghanbarzadeh Darban
Keyword(s):  
Data Collection ◽  
Social Sustainability ◽  
Statistical Population ◽  
The Social ◽  
Central District ◽  
Multivariable Regression ◽  
Rural Municipalities ◽  
The One

In recent decades, social sustainability has become the center of many researchers and planners’ attention. In this regard, one of the main approaches to achieve social sustainability is paying attention to the role of rural municipalities. Regarding the importance of this subject, the current study aimed to evaluate the rural municipalities’ performance in the achievement of social sustainability in the Central District of Nimrouz County. The current study is of applied type in terms of objective and it is of descriptive-analytical type in terms of methodology. The data collection instruments were questionnaires and interviews, and the statistical population included the rural households in the central district of Nimrouz County. The data were analyzed by the One-Sample t-test and the variance analysis and multivariable regression were also used to evaluate the rural governor’s (Dehtar) performance. The results indicated that rural governors’ performance in the social sustainability of the villages under study has managed to grab local villagers’ satisfaction and it was at an appropriate level.

scholarly journals ICTs as the Bullring: A Case Study of the Rainbow Flag Incident in Cairo

2018 ◽  
Vol 4 (Summer) ◽  
pp. 80-93
Author(s):  
Lara Mansour
Keyword(s):  
Middle Class ◽  
Communication Technologies ◽  
The State ◽  
Information Communication Technologies ◽  
Main Role ◽  
Information Communication ◽  
Upper Middle Class ◽  
The One

In this paper I am studying an incident that started with a concert in one of Cairo’s upper middle class districts, and ended up with a crackdown on the LGBTIQA++ Community in Egypt. In that incident Information Communication Technologies (ICTs) played a main role of contesting positions and representations of state and LGBTIQA++ persons in Egypt. Through the following lines, I am trying to unfold the intricacies of ICTs usage among both the state apparatuses and representatives of their discourse online on the one hand, and the LGBTIQA++ people and allies narratives. And how is it that this very same space acted as a presence- and forced absence- for both. My study is based on personal interviews with members who were directly involved in these events.

scholarly journals The role of competitive advantage on the relation between internationalization and export performance: case study of EFACEC

2015 ◽  
Vol 14 (1) ◽  
pp. 28-42
Author(s):  
Orlando Lima Rua ◽  
Liliana Freitas Melo
Keyword(s):  
Competitive Advantage ◽  
Qualitative Methodology ◽  
Single Case ◽  
Export Performance ◽  
Practical Importance ◽  
Case Study Method ◽  
The One ◽  
Object Of Study

The main goal of this study is to analyze the factors that in the internationalization’s process of Portuguese companies that allows to understand the contributions of the competitive advantage that influenced export performance. This will assess how the internationalization’s strategies, considering the competitive advantage as well its interaction with the market’s characteristics, may lead companies, on the one hand, to the implementation of strategies for success, and, on the other, and to the top performances of its export activity. In this context embarked by the qualitative methodology, we used the case study method, regarding to the single case of the largest and the most representative Portuguese multinational company of the electromechanical sector (EFACEC), thus enabling a holistic and integrated vision of organizational phenomena object of study. This methodological option allowed objectify results of practical importance, which will contribute to a lower dispersion in companies’ strategic internationalization process, accentuating the assertiveness of its exporting activity. As main conclusions we highlight the fact of internationalization’s strategies positively influence competitive advantage which, in turn, positively influence the export performance, and this one is positively influenced by markets’ characteristics.

Qurʾānic Interpretative Latitude and Human Evolution: A Case Study

2014 ◽  
Vol 12 (2) ◽  
pp. 95-114
Author(s):  
DS Adnan Majid
Keyword(s):  
Human Evolution ◽  
Scientific Theory ◽  
Modern Science ◽  
The Other ◽  
Religion And Science ◽  
Age Of The Universe ◽  
The One ◽  
The Universe

Muslims today employ various and often conflicting strategies to mitigate contradictions between traditional Islamic teachings and modern science, especially in matters related to the age of the universe and the origin of humans. On the one hand, any scientific theory deemed problematic might be rejected outright; on the other, Islamic texts may be reinterpreted to fully support a novel scientific theory. There is, however, an alternative hermeneutical approach that uses intra-textual analysis to acknowledge “interpretative latitude” in the Qurʾān and other Islamic texts – the possibility that these texts allow for ambiguity and multiple interpretations that may or may not agree with modern science. In this paper, human evolution will serve as a case study of the implementation of this approach via a structured discussion of common Muslim objections to the theory. The paper will conclude with a discussion of the implications of this approach on defining the role of the Qurʾān and on the boundaries of religion and science.

scholarly journals All for One, One for All! From Events to Organizational Dynamics in Fluid Organization

M n gement ◽  
2021 ◽  
pp. 1-22
Author(s):  
Anthony Hussenot
Keyword(s):  
Frame Of Reference ◽  
The Other ◽  
Organizational Dynamics ◽  
Other Hand ◽  
Future Events ◽  
The One ◽  
Definition Of ◽  
Common Frame Of Reference

This article examines the emergence of organizational dynamics in the context of fluid organizational phenomena. To do so, three organizational dynamics are studied: (1) identity, (2) actorhood, and (3) interconnected instances of decision-making. To study how these three organizational dynamics take shape in the context of fluid organizational phenomena, I rely on the events-based approach and a case study of makers operating in a makerspace in the Paris region. The results show, on the one hand, that the collective of makers enacts a structure of past, present, and future events that participates in the definition of a common frame of reference and, on the other hand, that this common frame of reference plays a role in the emergence of organizational dynamics. On the basis of this result, my main contribution is to show the role of the eventalization – that is, the definition, configuration and narration by the actors of past, present, and future events – in the definition of organizational dynamics in fluid organizational phenomena. This article contributes on the one hand to the literature on fluid organizational phenomena, and on the other hand to the literature on makers working in makerspaces.

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