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Sample records for actor based framework

  1. Software synthesis of CAL actors for the MPEG reconfigurable Video Coding framework

    Roquier, Ghislain; Wipliez, Matthieu; Raulet, Mickael; Nezan, Jean François; Déforges, Olivier

    2008-01-01

    International audience The MPEG Reconfigurable Video Coding (RVC) framework aims to provide a unified specification of all video technology. In this framework, a decoder is modularly built as a configuration of video coding tools taken from the MPEG toolbox library. The elements of the library are specified using the CAL Actor Language. CAL is a dataflow based language providing computation models that are concurrent and modular. This paper presents a synthesis tool that from a CAL specifi...

  2. Opening up the innovation system framework towards new actors and institutions

    Warnke, Philine; Koschatzky, Knut; Dönitz, Ewa; Zenker, Andrea; Stahlecker, Thomas; Som, Oliver; Cuhls, Kerstin; Güth, Sandra

    2016-01-01

    The paper revisits the established framework of the national and regional innovation system (NIS/RIS) in the light of recent insights from innovation research in order to increase its capacity for generating meaningful insights for policy makers and other actors wishing to influence innovation capacity of nations, regions or sectors. We review six research strands that challenge the classical NIS/RIS framework by pointing to a wider range of actors, institutions and innovation modes relevant ...

  3. Actor-Q Based Active Perception Learning System

    Shibata, Katsunari; Nishino, Tetsuo; Okabe, Yoichi

    2001-01-01

    An active perception learning system based on reinforcement learning is proposed. A novel reinforcement###architecture, called Actor-Q, is employed in which Q-###learning and Actor-Critic are combined. The system###decides its actions according to Q-values. One of the###actions is to move its sensor, and the others are to###make an answer of its recognition result, each of which###corresponds to each pattern. When the sensor motion###is selected, the sensor moves according to the actor's###ou...

  4. Reinforcement learning using a continuous time actor-critic framework with spiking neurons.

    Frémaux, Nicolas; Sprekeler, Henning; Gerstner, Wulfram

    2013-04-01

    Animals repeat rewarded behaviors, but the physiological basis of reward-based learning has only been partially elucidated. On one hand, experimental evidence shows that the neuromodulator dopamine carries information about rewards and affects synaptic plasticity. On the other hand, the theory of reinforcement learning provides a framework for reward-based learning. Recent models of reward-modulated spike-timing-dependent plasticity have made first steps towards bridging the gap between the two approaches, but faced two problems. First, reinforcement learning is typically formulated in a discrete framework, ill-adapted to the description of natural situations. Second, biologically plausible models of reward-modulated spike-timing-dependent plasticity require precise calculation of the reward prediction error, yet it remains to be shown how this can be computed by neurons. Here we propose a solution to these problems by extending the continuous temporal difference (TD) learning of Doya (2000) to the case of spiking neurons in an actor-critic network operating in continuous time, and with continuous state and action representations. In our model, the critic learns to predict expected future rewards in real time. Its activity, together with actual rewards, conditions the delivery of a neuromodulatory TD signal to itself and to the actor, which is responsible for action choice. In simulations, we show that such an architecture can solve a Morris water-maze-like navigation task, in a number of trials consistent with reported animal performance. We also use our model to solve the acrobot and the cartpole problems, two complex motor control tasks. Our model provides a plausible way of computing reward prediction error in the brain. Moreover, the analytically derived learning rule is consistent with experimental evidence for dopamine-modulated spike-timing-dependent plasticity. PMID:23592970

  5. Reinforcement learning using a continuous time actor-critic framework with spiking neurons.

    Nicolas Frémaux

    2013-04-01

    Full Text Available Animals repeat rewarded behaviors, but the physiological basis of reward-based learning has only been partially elucidated. On one hand, experimental evidence shows that the neuromodulator dopamine carries information about rewards and affects synaptic plasticity. On the other hand, the theory of reinforcement learning provides a framework for reward-based learning. Recent models of reward-modulated spike-timing-dependent plasticity have made first steps towards bridging the gap between the two approaches, but faced two problems. First, reinforcement learning is typically formulated in a discrete framework, ill-adapted to the description of natural situations. Second, biologically plausible models of reward-modulated spike-timing-dependent plasticity require precise calculation of the reward prediction error, yet it remains to be shown how this can be computed by neurons. Here we propose a solution to these problems by extending the continuous temporal difference (TD learning of Doya (2000 to the case of spiking neurons in an actor-critic network operating in continuous time, and with continuous state and action representations. In our model, the critic learns to predict expected future rewards in real time. Its activity, together with actual rewards, conditions the delivery of a neuromodulatory TD signal to itself and to the actor, which is responsible for action choice. In simulations, we show that such an architecture can solve a Morris water-maze-like navigation task, in a number of trials consistent with reported animal performance. We also use our model to solve the acrobot and the cartpole problems, two complex motor control tasks. Our model provides a plausible way of computing reward prediction error in the brain. Moreover, the analytically derived learning rule is consistent with experimental evidence for dopamine-modulated spike-timing-dependent plasticity.

  6. Managing the Dynamics of the Bologna Reforms: How Institutional Actors Re-Construct the Policy Framework

    Veiga, Amélia; Neave, Guy

    2015-01-01

    How do the constituencies in higher education re-interpret Bologna's function with regard to the European Higher Education Area? This research examines how institutional actors re-construct the policy framework in the light of their own institutional agendas. Drawing on empirical data from a survey of academics, students and administrative and…

  7. An Actor's Approach to Management Conceptual framework and company practices

    & Hanne Nørreklit) Chapter 6. Colliding and disintegrated topoi as the result of intended integration (Peter Beusch) Chapter 7. Managerial knowledge in a research-based medical company (Hanne Nørreklit & Lennart Nørreklit) Chapter 8. Communication as means for deciding about realistic possibilities (Sten...

  8. Reinforcement learning for a biped robot based on a CPG-actor-critic method.

    Nakamura, Yutaka; Mori, Takeshi; Sato, Masa-aki; Ishii, Shin

    2007-08-01

    Animals' rhythmic movements, such as locomotion, are considered to be controlled by neural circuits called central pattern generators (CPGs), which generate oscillatory signals. Motivated by this biological mechanism, studies have been conducted on the rhythmic movements controlled by CPG. As an autonomous learning framework for a CPG controller, we propose in this article a reinforcement learning method we call the "CPG-actor-critic" method. This method introduces a new architecture to the actor, and its training is roughly based on a stochastic policy gradient algorithm presented recently. We apply this method to an automatic acquisition problem of control for a biped robot. Computer simulations show that training of the CPG can be successfully performed by our method, thus allowing the biped robot to not only walk stably but also adapt to environmental changes. PMID:17412559

  9. A Three Level Framework for Closed-Loop Supply Chain Management—Linking Society, Chain and Actor Level

    Stefan Seuring; Romy Morana

    2011-01-01

    Supply chain management and closed-loop supply chain management (CLSCM) have developed into established concepts in recent years. The related material cycles and product returns form an important part of all related processes with high potential for reducing environmental burden. The paper proposes a framework for (environmentally triggered) closed-loop supply chain management, spanning three different levels: the societal or governance, the chain and the actor level. Within each level, a set...

  10. Reinforcement Learning Using a Continuous Time Actor-Critic Framework with Spiking Neurons

    Frémaux, Nicolas; Sprekeler, Henning; Gerstner, Wulfram

    2013-01-01

    Animals repeat rewarded behaviors, but the physiological basis of reward-based learning has only been partially elucidated. On one hand, experimental evidence shows that the neuromodulator dopamine carries information about rewards and affects synaptic plasticity. On the other hand, the theory of reinforcement learning provides a framework for reward-based learning. Recent models of reward-modulated spike-timing-dependent plasticity have made first steps towards bridging the gap between the t...

  11. 基于对称扰动采样的Actor-critic算法%Actor-critic algorithms based on symmetric perturbation sampling

    张春元; 朱清新

    2015-01-01

    针对传统Actor-critic (AC)方法在求解连续空间序贯决策问题时收敛速度较慢、收敛质量不高的问题,提出一种基于对称扰动采样的AC算法框架.首先,框架采用高斯分布作为策略分布,在每一时间步对当前动作均值对称扰动,从而生成两个动作与环境并行交互;然后,基于两者的最大时域差分(TD)误差选取Agent的行为动作,并对值函数参数进行更新;最后,基于两者的平均常规梯度或增量自然梯度对策略参数进行更新.理论分析和仿真结果表明,所提框架具有较好的收敛性和计算效率.%When solving the sequential decision-making problems in continuous spaces, the traditional actor-critic(AC) methods are often difficult to get good convergence speed and quality. To overcome the above weakness, an AC algorithm framework, which uses a Gaussian distribution as the policy distribution, is proposed based on the symmetric perturbation sampling. At each time step, the framework generates two actions through two symmetric perturbations on the current action mean, and takes them to interact with the environment in parallel. Then, the framework selects the Agent's behavior action and updates the value-function parameters based on the maximum temporal difference(TD) error, and updates the policy parameters based on the average regular gradient or the average incremental natural gradient. The theoretical analysis and simulation results show that the framework not only has a better convergence performance, but also has a high computational efficiency.

  12. Ontology-based collaborative framework for disaster recovery scenarios

    Ramanathan, Sakkaravarthi; Drira, Khalil; Chassot, Christophe

    2012-01-01

    This paper aims at designing of adaptive framework for supporting collaborative work of different actors in public safety and disaster recovery missions. In such scenarios, firemen and robots interact to each other to reach a common goal; firemen team is equipped with smart devices and robots team is supplied with communication technologies, and should carry on specific tasks. Here, reliable connection is mandatory to ensure the interaction between actors. But wireless access network and communication resources are vulnerable in the event of a sudden unexpected change in the environment. Also, the continuous change in the mission requirements such as inclusion/exclusion of new actor, changing the actor's priority and the limitations of smart devices need to be monitored. To perform dynamically in such case, the presented framework is based on a generic multi-level modeling approach that ensures adaptation handled by semantic modeling. Automated self-configuration is driven by rule-based reconfiguration polici...

  13. Drug scheduling of cancer chemotherapy based on natural actor-critic approach.

    Ahn, Inkyung; Park, Jooyoung

    2011-11-01

    Recently, reinforcement learning methods have drawn significant interests in the area of artificial intelligence, and have been successfully applied to various decision-making problems. In this paper, we study the applicability of the NAC (natural actor-critic) approach, a state-of-the-art reinforcement learning method, to the drug scheduling of cancer chemotherapy for an ODE (ordinary differential equation)-based tumor growth model. ODE-based cancer dynamics modeling is an active research area, and many different mathematical models have been proposed. Among these, we use the model proposed by de Pillis and Radunskaya (2003), which considers the growth of tumor cells and their interaction with normal cells and immune cells. The NAC approach is applied to this ODE model with the goal of minimizing the tumor cell population and the drug amount while maintaining the adequate population levels of normal cells and immune cells. In the framework of the NAC approach, the drug dose is regarded as the control input, and the reward signal is defined as a function of the control input and the cell populations of tumor cells, normal cells, and immune cells. According to the control policy found by the NAC approach, effective drug scheduling in cancer chemotherapy for the considered scenarios has turned out to be close to the strategy of continuing drug injection from the beginning until an appropriate time. Also, simulation results showed that the NAC approach can yield better performance than conventional pulsed chemotherapy. PMID:21839140

  14. Movement Actors in the Education Bureaucracy: The Figured World of Activity Based Learning in Tamil Nadu

    Niesz, Tricia; Krishnamurthy, Ramchandar

    2014-01-01

    Tamil Nadu has gained international recognition for reforming its government school classrooms into active, child-centered learning environments. Our exploration of the history of the Activity Based Learning movement suggests that this reform was achieved by social movement actors serving in and through the state's administration.…

  15. 基于核方法的连续动作Actor-Critic学习%Kernel-Based Continuous-Action Actor-Critic Learning

    陈兴国; 高阳; 范顺国; 俞亚君

    2014-01-01

    In reinforcement learning, the learning algorithms frequently have to deal with both continuous state and continuous action spaces to control accurately. In this paper, the great capacity of kernel method for handling continuous state space problems and the advantage of actor-critic method in dealing with continuous action space problems are combined. Kernel-based continuous-action actor-critic learning ( KCACL ) is proposed grounded on the combination. In KCACL, the actor updates each action probability based on reward-inaction, and the critic updates the state value function according to online selective kernel-based temporal difference( OSKTD) learning. The experimental results demonstrate the effectiveness of the proposed algorithm.%强化学习算法通常要处理连续状态及连续动作空间问题以实现精确控制。就此文中结合Actor-Critic方法在处理连续动作空间的优点及核方法在处理连续状态空间的优势,提出一种基于核方法的连续动作Actor-Critic学习算法( KCACL)。该算法中,Actor根据奖赏不作为原则更新动作概率,Critic采用基于核方法的在线选择时间差分算法学习状态值函数。对比实验验证该算法的有效性。

  16. A Three Level Framework for Closed-Loop Supply Chain Management—Linking Society, Chain and Actor Level

    Stefan Seuring

    2011-04-01

    Full Text Available Supply chain management and closed-loop supply chain management (CLSCM have developed into established concepts in recent years. The related material cycles and product returns form an important part of all related processes with high potential for reducing environmental burden. The paper proposes a framework for (environmentally triggered closed-loop supply chain management, spanning three different levels: the societal or governance, the chain and the actor level. Within each level, a set of activities or processes can be identified. Taken together, the levels allow a comprehensive analysis of a closed-loop supply chain system. This is illustrated building on two case studies in the textile and apparel industry, where closed-loop supply chains have been designed to take specific apparel products back. The case studies are analyzed against all three levels and allow exemplification of related challenges and interrelations among the three levels. The three levels contribute to the further comprehension of the multiple issues having to be taken into account for successfully implementing closed-loop supply chains.

  17. A bluetooth-based Interactive system to improve relationships between actors in educational environments

    Ribeiro, F. Reinaldo; Metrôlho, J.C.M.M.; Costa, Mónica

    2010-01-01

    Nowadays there are a vast number of devices and technologies available for the common citizen to improve their communication with others. This fosters the design and implementation of systems that explore the available features of these devices. In this paper, we propose a Bluetooth-based interactive system for delivering personalized information in high education institutions. The system allows informing, on a personalized way, the actors of an education institution on a free way using popul...

  18. Actor-critic-based optimal tracking for partially unknown nonlinear discrete-time systems.

    Kiumarsi, Bahare; Lewis, Frank L

    2015-01-01

    This paper presents a partially model-free adaptive optimal control solution to the deterministic nonlinear discrete-time (DT) tracking control problem in the presence of input constraints. The tracking error dynamics and reference trajectory dynamics are first combined to form an augmented system. Then, a new discounted performance function based on the augmented system is presented for the optimal nonlinear tracking problem. In contrast to the standard solution, which finds the feedforward and feedback terms of the control input separately, the minimization of the proposed discounted performance function gives both feedback and feedforward parts of the control input simultaneously. This enables us to encode the input constraints into the optimization problem using a nonquadratic performance function. The DT tracking Bellman equation and tracking Hamilton-Jacobi-Bellman (HJB) are derived. An actor-critic-based reinforcement learning algorithm is used to learn the solution to the tracking HJB equation online without requiring knowledge of the system drift dynamics. That is, two neural networks (NNs), namely, actor NN and critic NN, are tuned online and simultaneously to generate the optimal bounded control policy. A simulation example is given to show the effectiveness of the proposed method. PMID:25312944

  19. Variance Adjusted Actor Critic Algorithms

    Tamar, Aviv; Mannor, Shie

    2013-01-01

    We present an actor-critic framework for MDPs where the objective is the variance-adjusted expected return. Our critic uses linear function approximation, and we extend the concept of compatible features to the variance-adjusted setting. We present an episodic actor-critic algorithm and show that it converges almost surely to a locally optimal point of the objective function.

  20. From conflict management to reward-based decision making: actors and critics in primate medial frontal cortex.

    Silvetti, Massimo; Alexander, William; Verguts, Tom; Brown, Joshua W

    2014-10-01

    The role of the medial prefrontal cortex (mPFC) and especially the anterior cingulate cortex has been the subject of intense debate for the last decade. A number of theories have been proposed to account for its function. Broadly speaking, some emphasize cognitive control, whereas others emphasize value processing; specific theories concern reward processing, conflict detection, error monitoring, and volatility detection, among others. Here we survey and evaluate them relative to experimental results from neurophysiological, anatomical, and cognitive studies. We argue for a new conceptualization of mPFC, arising from recent computational modeling work. Based on reinforcement learning theory, these new models propose that mPFC is an Actor-Critic system. This system is aimed to predict future events including rewards, to evaluate errors in those predictions, and finally, to implement optimal skeletal-motor and visceromotor commands to obtain reward. This framework provides a comprehensive account of mPFC function, accounting for and predicting empirical results across different levels of analysis, including monkey neurophysiology, human ERP, human neuroimaging, and human behavior. PMID:24239852

  1. The Adoption Of Tailor-made IT-based Accounting Systems Within Indonesian SMEs From Actor Network Theory Perspective

    Samiaji Sarosa

    2012-10-01

    Full Text Available This paper examines the adoption process of computer-based accounting information systems within Indonesian SMEs. The analysis was conducted using theoretical framework proposed by Slappendel [1] which is interactive process. Interactive process argues that adoption of innovation (IT in particular should be viewed as an interactive process between individual member, organization, and its environment. One of the emerging theories within interactive process is Actor Network Theory (ANT proposed by Latour, Callon, and Law[2-7]. ANT classified adoption process as four stages process, namely problematisation, interrestment, enrolment, and mobilization. We used qualitative approach to gather data, analyze and draw conclusion. As the result we come up with factors that influencing the adoption process along with the failure and success of such endeavour. We argues that ANT is better in explaining the adoption of IT compared to other model due its ability to identified not only the factors but also the process of adoption and explaining the success or failure of the process.

  2. An Actor-Critic based controller for glucose regulation in type 1 diabetes.

    Daskalaki, Elena; Diem, Peter; Mougiakakou, Stavroula G

    2013-02-01

    A novel adaptive approach for glucose control in individuals with type 1 diabetes under sensor-augmented pump therapy is proposed. The controller, is based on Actor-Critic (AC) learning and is inspired by the principles of reinforcement learning and optimal control theory. The main characteristics of the proposed controller are (i) simultaneous adjustment of both the insulin basal rate and the bolus dose, (ii) initialization based on clinical procedures, and (iii) real-time personalization. The effectiveness of the proposed algorithm in terms of glycemic control has been investigated in silico in adults, adolescents and children under open-loop and closed-loop approaches, using announced meals with uncertainties in the order of ±25% in the estimation of carbohydrates. The results show that glucose regulation is efficient in all three groups of patients, even with uncertainties in the level of carbohydrates in the meal. The percentages in the A+B zones of the Control Variability Grid Analysis (CVGA) were 100% for adults, and 93% for both adolescents and children. The AC based controller seems to be a promising approach for the automatic adjustment of insulin infusion in order to improve glycemic control. After optimization of the algorithm, the controller will be tested in a clinical trial. PMID:22502983

  3. El entrenamiento como base de la formación actoral

    Carlos Araque Osorio

    2011-05-01

    Full Text Available The text presents a reflection on the actor’s training and its implications, virtues and contributions to the professional formation of actors. It starts from the experience that the author has assimilated as teacher and director, but mainly as an active actor, that appeals to his body as a work tool. From this perspective, the relationships between exercise, system and rehearsal are analyzed. Performance is not an esoteric and mystic act propitiated by the gods, it is a work that requires preparation, dedication and conscious inquiry. The actor or the actress that are unable to train in solitude, cannot contribute to a group, perhaps, this should be done without losing the perspective that theater is a collective act, in which communication plays an important role. For this reason, is fundamental to know how it is expressed, how it is signified and how a communication is begun between the actor and the spectator.

  4. Fuzzy Multi-actor Multi-criteria Decision Making for Sustainability Assessment of biomass-based technologies for hydrogen production

    Ren, Jingzheng; Fedele, Andrea; Mason, Marco;

    2013-01-01

    The purpose of this paper is to develop a sustainability assessment method to rank the prior sequence of biomass-based technologies for hydrogen production. A novel fuzzy Multi-actor Multi-criteria Decision Making method which allows multiple groups of decision-makers to use linguistic variables to...

  5. Actor-Critic Algorithm Based on Tile Coding and Model Learning%基于Tile Coding编码和模型学习的Actor-Critic算法

    金玉净; 朱文文; 伏玉琛; 刘全

    2014-01-01

    Actor-Critic是一类具有较好性能及收敛保证的强化学习方法,然而,Agent在学习和改进策略的过程中并没有对环境的动态性进行学习,导致Actor-Critic方法的性能受到一定限制.此外,Actor-Critic方法中需要近似地表示策略以及值函数,其中状态和动作的编码方法以及参数对Actor-Critic方法有重要的影响.Tile Coding编码具有简单易用、计算时间复杂度较低等优点,因此,将Tile Coding编码与基于模型的Actor-Critic方法结合,并将所得算法应用于强化学习仿真实验.实验结果表明,所得算法具有较好的性能.

  6. An actor-based model of social network influence on adolescent body size, screen time, and playing sports.

    David A Shoham

    Full Text Available Recent studies suggest that obesity may be "contagious" between individuals in social networks. Social contagion (influence, however, may not be identifiable using traditional statistical approaches because they cannot distinguish contagion from homophily (the propensity for individuals to select friends who are similar to themselves or from shared environmental influences. In this paper, we apply the stochastic actor-based model (SABM framework developed by Snijders and colleagues to data on adolescent body mass index (BMI, screen time, and playing active sports. Our primary hypothesis was that social influences on adolescent body size and related behaviors are independent of friend selection. Employing the SABM, we simultaneously modeled network dynamics (friendship selection based on homophily and structural characteristics of the network and social influence. We focused on the 2 largest schools in the National Longitudinal Study of Adolescent Health (Add Health and held the school environment constant by examining the 2 school networks separately (N = 624 and 1151. Results show support in both schools for homophily on BMI, but also for social influence on BMI. There was no evidence of homophily on screen time in either school, while only one of the schools showed homophily on playing active sports. There was, however, evidence of social influence on screen time in one of the schools, and playing active sports in both schools. These results suggest that both homophily and social influence are important in understanding patterns of adolescent obesity. Intervention efforts should take into consideration peers' influence on one another, rather than treating "high risk" adolescents in isolation.

  7. Research Note: The consequences of different methods for handling missing network data in Stochastic Actor Based Models

    Hipp, John R.; Wang, Cheng; Butts, Carter T.; Jose, Rupa; Lakon, Cynthia M.

    2015-01-01

    Although stochastic actor based models (e.g., as implemented in the SIENA software program) are growing in popularity as a technique for estimating longitudinal network data, a relatively understudied issue is the consequence of missing network data for longitudinal analysis. We explore this issue in our research note by utilizing data from four schools in an existing dataset (the AddHealth dataset) over three time points, assessing the substantive consequences of using four different strateg...

  8. A multi-actor multi-criteria framework to assess the stakeholder support for different biofuel options: The case of Belgium

    The multi-actor multi-criteria analysis (MAMCA) is a methodology to evaluate different policy measures, whereby different stakeholders' opinions are explicitly taken into account. In this paper, the framework is used to assess several biofuel options for Belgium that can contribute to the binding target of 10% renewable fuels in transport by 2020, issued by the Renewable Energy Directive (RED). Four biofuel options (biodiesel, ethanol, biogas and synthetic biodiesel (also referred to as 'biomass-to-liquid' or BTL)) together with a reference fossil fuel option, are evaluated on the aims and objectives of the different stakeholders involved in the biofuel supply chain (feedstock producers, biofuel producers, fuel distributors, end users, vehicle manufacturers, government, NGOs and North-South organizations). Overall, the MAMCA provided insights in the stakeholder's position and possible implementation problems for every biofuel option. As such, it helps decision makers in establishing a supportive policy framework to facilitate implementation and to ensure market success, once they have decided on which biofuel option (or combination of options) to implement. - Research Highlights: → Stakeholder support is an indispensable factor for market success of biofuels. → A MAMCA explicitly includes stakeholder visions in the decision-making process. → The MAMCA shows strengths and weaknesses of alternatives for different stakeholders. →Information on stakeholder's position helps to establish implementation pathways. → Policy makers should focus on combination of biofuel options to reach EU 2020 target.

  9. A multi-actor multi-criteria framework to assess the stakeholder support for different biofuel options. The case of Belgium

    The multi-actor multi-criteria analysis (MAMCA) is a methodology to evaluate different policy measures, whereby different stakeholders' opinions are explicitly taken into account. In this paper, the framework is used to assess several biofuel options for Belgium that can contribute to the binding target of 10% renewable fuels in transport by 2020, issued by the Renewable Energy Directive (RED). Four biofuel options (biodiesel, ethanol, biogas and synthetic biodiesel (also referred to as 'biomass-to-liquid' or BTL)) together with a reference fossil fuel option, are evaluated on the aims and objectives of the different stakeholders involved in the biofuel supply chain (feedstock producers, biofuel producers, fuel distributors, end users, vehicle manufacturers, government, NGOs and North-South organizations). Overall, the MAMCA provided insights in the stakeholder's position and possible implementation problems for every biofuel option. As such, it helps decision makers in establishing a supportive policy framework to facilitate implementation and to ensure market success, once they have decided on which biofuel option (or combination of options) to implement. (author)

  10. A climate game based on a Multi-Actor Dynamic Integrated Assessment Model (MADIAM)

    Weber, M.; Hasselmann, K.

    2003-04-01

    In November 2002 a special exhibition on climate issues opened in the German Museum for Science and Techniques ('Deutsches Museum') in Munich. Within this exposition we present an interactive game in which visitors control future climate policy by adopting the role of either the government, a CEO (Chief Executive Officer) of a global company or a typical private household of an industrialized country. The players endeavor to maintain a sustainable climate in the future (global goal) while pursuing their own individual welfare goals. Task of the exhibition visitor is to combine the personal interests of the actor he is adopting with the global goal. The individual goal of government is maintain economic growth while avoiding conflicts due to inter-regional or societal inequalities. The CEO seeks to maximize total profits (business earnings). The goal of households is to maximize wages and interest earnings. The evolution of the economic system and climate is governed by the decisions of the actors. Government sets economic side conditions in terms of carbon taxes, subsidies for R&D or market infusion support for climate-friendly technologies, and transfers development aid to less advanced regions. The CEOs decide how much to invest in a number of alternative investment options and in which region. Households influences the economy by their purchasing and savings decisions. The model considers four regions, three real actors (mentioned above) and two different goods (climate-adverse and a climate-friendly). We introduce four different kinds of energy (coal, oil/gas, nuclear, renewable). A World Bank handles money flows. At different points in time the actors can cooperate with other actors in order to reach the global goal Stochastic elements regarding future technology and future climate are included. A touch-screen monitor with user friendly interface is used to present animations and videos. An animated climate scientist uses a climate simulator to compute future

  11. Modelling carrier decisions in an activity-based freight transportation framework

    MAES, Tabitha

    2013-01-01

    The purpose of this thesis was to develop a new freight transportation framework in which the focus lies on the logistic decisions taken by the involved actors. Two main topics can be recognized in this thesis. The first part of this thesis deals with understanding how current freight transportation models work and what their shortcomings are (chapter 2). Based on this analysis a new conceptual freight transportation framework is proposed to fill in the research gaps (chapters 3 and 4). Secon...

  12. Specifying and Inheriting Concurrent Behavior in an Actor-BasedObject-Oriented Language

    Lavender, R. Gregory; Kafura, Dennis G.

    1990-01-01

    Using CCS behavior equations to specify and reason about the observable behavior of concurrent objects, we demonstrate that a language mechanism called a behavior set can be used to capture the behavior of actor-like objects. Using behavior equations as a formal representation of concurrent object behavior results in the explication of a mapping from the domain of objects to a domain of behavior sets. We call this mapping the behavior function. By expressing relevant object states, behavior...

  13. Hybrid actors and role tensions: How do professional-managers negotiate an identity-based compromise?

    Burellier, F.

    2008-01-01

    Today French public management is exposed to numerous changes, changes which are taking the shape of performance management devolution efforts within public organizations. These evolutions aim at conferring more autonomy to actors who are closer to the field, by assigning more responsibilities to them: definition of objectives, measurement of results, resource allocation... This phenomenon is currently manifesting itself inside public hospital organizations, in the same vein that Anglo-Saxon ...

  14. Teachers' professional development in a community: A study of the central actors, their networks and web-based learning

    Jiri Lallimo

    2008-07-01

    Full Text Available The goal of this article was to study teachers' professional development related to web-based learning in the context of the teacher community. The object was to learn in what kind of networks teachers share the knowledge of web-based learning and what are the factors in the community that support or challenge teachers professional development of web-based learning. The findings of the study revealed that there are teachers who are especially active, called the central actors in this study, in the teacher community who collaborate and share knowledge of web-based learning. These central actors share both technical and pedagogical knowledge of web-based learning in networks that include both internal and external relations in the community and involve people, artefacts and a variety of media. Furthermore, the central actors appear to bridge different fields of teaching expertise in their community.According to the central actors' experiences the important factors that support teachers' professional development of web-based learning in the community are; the possibility to learn from colleagues and from everyday working practices, an emotionally safe atmosphere, the leader's personal support and community-level commitment. Also, the flexibility in work planning, challenging pupils, shared lessons with colleagues, training events in an authentic work environment and colleagues' professionalism are considered meaningful for professional development. As challenges, the knowledge sharing of web-based learning in the community needs mutual interests, transactive memory, time and facilities, peer support, a safe atmosphere and meaningful pedagogical practices.On the basis of the findings of the study it is suggested that by intensive collaboration related to web-based learning it may be possible to break the boundaries of individual teachership and create such sociocultural activities which support collaborative professional development in the teacher

  15. A Framework for Decision Support Systems Based on Zachman Framework

    Ostadzadeh, S. Shervin; Habibi, Jafar; Ostadzadeh, S. Arash

    Recent challenges have brought about an inevitable tendency for enterprises to lunge towards organizing their information activities in a comprehensive way. In this respect, Enterprise Architecture (EA) has proven to be the leading option for development and maintenance of information systems. EA clearly provides a thorough outline of the whole information system comprising an enterprise. To establish such an outline, a logical framework needs to be laid upon the entire information system. Zachman framework (ZF) has been widely accepted as a standard scheme for identifying and organizing descriptive representations that have critical roles in enterprise management and system development. In this paper, we propose a framework based on ZF for Decision Support Systems (DSS). Furthermore, a modeling approach based on Model-Driven Architecture (MDA) is utilized to obtain compatible models for all cells in the framework. The efficiency of the proposed framework is examined through a case study.

  16. Adaptive Actor-Critic Design-Based Integral Sliding-Mode Control for Partially Unknown Nonlinear Systems With Input Disturbances.

    Fan, Quan-Yong; Yang, Guang-Hong

    2016-01-01

    This paper is concerned with the problem of integral sliding-mode control for a class of nonlinear systems with input disturbances and unknown nonlinear terms through the adaptive actor-critic (AC) control method. The main objective is to design a sliding-mode control methodology based on the adaptive dynamic programming (ADP) method, so that the closed-loop system with time-varying disturbances is stable and the nearly optimal performance of the sliding-mode dynamics can be guaranteed. In the first step, a neural network (NN)-based observer and a disturbance observer are designed to approximate the unknown nonlinear terms and estimate the input disturbances, respectively. Based on the NN approximations and disturbance estimations, the discontinuous part of the sliding-mode control is constructed to eliminate the effect of the disturbances and attain the expected equivalent sliding-mode dynamics. Then, the ADP method with AC structure is presented to learn the optimal control for the sliding-mode dynamics online. Reconstructed tuning laws are developed to guarantee the stability of the sliding-mode dynamics and the convergence of the weights of critic and actor NNs. Finally, the simulation results are presented to illustrate the effectiveness of the proposed method. PMID:26357411

  17. Understanding the Mechanisms of Collective Decision Making in Ecological Restoration: An Agent-Based Model of Actors and Organizations

    Cristy Watkins

    2013-06-01

    Full Text Available Ecological restoration, particularly in urban contexts, is a complex collective decision-making process that involves a diversity of stakeholders and experts, each with their own perceptions and preferences about what landscapes should and can look like, how to get them to the desired state, and on what timeline. We investigate how structural and behavioral factors may influence collective decision making in the context of ecological restoration, with the purpose of establishing general relationships between management styles (defined by structural and behavioral factors of the organization and decision outcomes. Informed by existing literature on collective decision making and by empirical data from the Chicago Wilderness region, we present a stylized agent-based model that maps out and simulates the processes by which individuals within restoration organizations communicate, discuss, and ultimately make a decision. Our study examines how structural and behavioral characteristics--including: (a the number of actors and groups involved in decision making, (b the frequency and type of interactions among actors, (c the initial setup of positions and respect, (d outside information, and (e entrenchment and cost of dissent--lead to or prohibit group convergence in terms of collective position, variation in position across actors, and final decision strategies. We found that formal meetings and group leaders are important facilitators of convergence, especially when multiple groups are present, new information is introduced in the process, and participants are polarized around an issue. Also, intergroup interactions are particularly important for overall convergence. Position entrenchment slows the convergence process and increases the need for decision strategies involving outside intervention. Cost of dissent can reinforce these effects. Our study formalizes collective decision-making processes within the context of ecological restoration

  18. 基于批量递归最小二乘的自然Actor-Critic算法%Natural Actor-Critic based on batch recursive least-squares

    王国芳; 方舟; 李平

    2015-01-01

    为了减轻Actor-Critic结构中智能体用最小二乘法估计自然梯度时的在线运算负担,提高运算实时性,提出新的学习算法:NAC-BRLS.该算法在Critic中利用批量递归最小二乘法估计自然梯度,根据估计得到的梯度乐观地更新策略.批量递归最小二乘法的引入使得智能体能根据自身运算能力自由调整各批次运算的数据量,即每次策略估计时使用的数据量,在全乐观和部分乐观之间进行权衡,大大提高了NAC-LSTD算法的灵活性.山地车仿真实验表明,与NAC-LSTD算法相比,NAC-BRLS算法在保证一定收敛性能的前提下,能够明显降低智能体的单步平均运算负担.

  19. Holding-based network of nations based on listed energy companies: An empirical study on two-mode affiliation network of two sets of actors

    Li, Huajiao; Fang, Wei; An, Haizhong; Gao, Xiangyun; Yan, Lili

    2016-05-01

    Economic networks in the real world are not homogeneous; therefore, it is important to study economic networks with heterogeneous nodes and edges to simulate a real network more precisely. In this paper, we present an empirical study of the one-mode derivative holding-based network constructed by the two-mode affiliation network of two sets of actors using the data of worldwide listed energy companies and their shareholders. First, we identify the primitive relationship in the two-mode affiliation network of the two sets of actors. Then, we present the method used to construct the derivative network based on the shareholding relationship between two sets of actors and the affiliation relationship between actors and events. After constructing the derivative network, we analyze different topological features on the node level, edge level and entire network level and explain the meanings of the different values of the topological features combining the empirical data. This study is helpful for expanding the usage of complex networks to heterogeneous economic networks. For empirical research on the worldwide listed energy stock market, this study is useful for discovering the inner relationships between the nations and regions from a new perspective.

  20. An actor manages: Actor training and managerial ideology

    Chow, BDV

    2014-01-01

    This article reads the development of psychologically based actor training against larger changes in the organisation of work in North America and Europe in the twentieth century. Konstantin Stanislavky's System and later adaptations including the American Method are wrapped into a larger ideology of individual self-management and discipline – mental, physical, and emotional – that accompanies the emergent managerial class of the post-war era. An actor is an ideal manager, and therefore prefi...

  1. Games as Actors - Interaction, Play, Design, and Actor Network Theory

    Jessen, Jari Due; Jessen, Carsten

    2014-01-01

    When interacting with computer games, users are forced to follow the rules of the game in return for the excitement, joy, fun, or other pursued experiences. In this paper, we investigate how games a chieve these experiences in the perspective of Actor Network Theory (ANT). Based on a qualitative data from a study of board games , computer games, and exergames, we conclude that games are actors that produce experiences by exercising power over the user’ s abilities, for example their cognitive...

  2. A Unified Multiscale Field/Network/Agent Based Modeling Framework for Human and Ecological Health Risk Analysis

    Georgopoulos, Panos G.; Isukapalli, Sastry S.

    2009-01-01

    A conceptual framework is presented for multiscale field/network/agent-based modeling to support human and ecological health risk assessments. This framework is based on the representation of environmental dynamics in terms of interacting networks, agents that move across different networks, fields representing spatiotemporal distributions of physical properties, rules governing constraints and interactions, and actors that make decisions affecting the state of the system. Different determini...

  3. A confidence metric for using neurobiological feedback in actor-critic reinforcement learning based brain-machine interfaces.

    Prins, Noeline W; Sanchez, Justin C; Prasad, Abhishek

    2014-01-01

    Brain-Machine Interfaces (BMIs) can be used to restore function in people living with paralysis. Current BMIs require extensive calibration that increase the set-up times and external inputs for decoder training that may be difficult to produce in paralyzed individuals. Both these factors have presented challenges in transitioning the technology from research environments to activities of daily living (ADL). For BMIs to be seamlessly used in ADL, these issues should be handled with minimal external input thus reducing the need for a technician/caregiver to calibrate the system. Reinforcement Learning (RL) based BMIs are a good tool to be used when there is no external training signal and can provide an adaptive modality to train BMI decoders. However, RL based BMIs are sensitive to the feedback provided to adapt the BMI. In actor-critic BMIs, this feedback is provided by the critic and the overall system performance is limited by the critic accuracy. In this work, we developed an adaptive BMI that could handle inaccuracies in the critic feedback in an effort to produce more accurate RL based BMIs. We developed a confidence measure, which indicated how appropriate the feedback is for updating the decoding parameters of the actor. The results show that with the new update formulation, the critic accuracy is no longer a limiting factor for the overall performance. We tested and validated the system onthree different data sets: synthetic data generated by an Izhikevich neural spiking model, synthetic data with a Gaussian noise distribution, and data collected from a non-human primate engaged in a reaching task. All results indicated that the system with the critic confidence built in always outperformed the system without the critic confidence. Results of this study suggest the potential application of the technique in developing an autonomous BMI that does not need an external signal for training or extensive calibration. PMID:24904257

  4. A confidence metric for using neurobiological feedback in actor-critic reinforcement learning based brain-machine interfaces

    Noeline Wilhelmina Prins

    2014-05-01

    Full Text Available Brain-Machine Interfaces (BMIs can be used to restore function in people living with paralysis. Current BMIs require extensive calibration that increase the set-up times and external inputs for decoder training that may be difficult to produce in paralyzed individuals. Both these factors have presented challenges in transitioning the technology from research environments to activities of daily living (ADL. For BMIs to be seamlessly used in ADL, these issues should be handled with minimal external input thus reducing the need for a technician/caregiver to calibrate the system. Reinforcement Learning (RL based BMIs are a good tool to be used when there is no external training signal and can provide an adaptive modality to train BMI decoders. However, RL based BMIs are sensitive to the feedback provided to adapt the BMI. In actor-critic BMIs, this feedback is provided by the critic and the overall system performance is limited by the critic accuracy. In this work, we developed an adaptive BMI that could handle inaccuracies in the critic feedback in an effort to produce more accurate RL based BMIs. We developed a confidence measure, which indicated how appropriate the feedback is for updating the decoding parameters of the actor. The results show that with the new update formulation, the critic accuracy is no longer a limiting factor for the overall performance. We tested and validated the system on three different data sets: synthetic data generated by an Izhikevich neural spiking model, synthetic data with a Gaussian noise distribution, and data collected from a non-human primate engaged in a reaching task. All results indicated that the system with the critic confidence built in always outperformed the system without the critic confidence. Results of this study suggest the potential application of the technique in developing an autonomous BMI that does not need an external signal for training or extensive calibration.

  5. Collaboration and entanglement: An actor-network theory analysis of team-based intraprofessional care for patients with advanced heart failure.

    McDougall, A; Goldszmidt, M; Kinsella, E A; Smith, S; Lingard, L

    2016-09-01

    Despite calls for more interprofessional and intraprofessional team-based approaches in healthcare, we lack sufficient understanding of how this happens in the context of patient care teams. This multi-perspective, team-based interview study examined how medical teams negotiated collaborative tensions. From 2011 to 2013, 50 patients across five sites in three Canadian provinces were interviewed about their care experiences and were asked to identify members of their health care teams. Patient-identified team members were subsequently interviewed to form 50 "Team Sampling Units" (TSUs), consisting of 209 interviews with patients, caregivers and healthcare providers. Results are gathered from a focused analysis of 13 TSUs where intraprofessional collaborative tensions involved treating fluid overload, or edema, a common HF symptom. Drawing on actor-network theory (ANT), the analysis focused on intraprofessional collaboration between specialty care teams in cardiology and nephrology. The study found that despite a shared narrative of common purpose between cardiology teams and nephrology teams, fluid management tools and techniques formed sites of collaborative tension. In particular, care activities involved asynchronous clinical interpretations, geographically distributed specialist care, fragmented forms of communication, and uncertainty due to clinical complexity. Teams 'disentangled' fluid in order to focus on its physiological function and mobilisation. Teams also used distinct 'framings' of fluid management that created perceived collaborative tensions. This study advances collaborative entanglement as a conceptual framework for understanding, teaching, and potentially ameliorating some of the tensions that manifest during intraprofessional care for patients with complex, chronic disease. PMID:27490299

  6. Component-Based Framework for Subsurface Simulations

    Palmer, Bruce J.; Fang, Yilin; Hammond, Glenn E.; Gurumoorthi, Vidhya

    2007-08-01

    Simulations in the subsurface environment represent a broad range of phenomena covering an equally broad range of scales. Developing modelling capabilities that can integrate models representing different phenomena acting at different scales present formidable challenges both from the algorithmic and computer science perspective. This paper will describe the development of an integrated framework that will be used to combine different models into a single simulation. Initial work has focused on creating two frameworks, one for performing smooth particle hydrodynamics (SPH) simulations of fluid systems, the other for performing grid-based continuum simulations of reactive subsurface flow. The SPH framework is based on a parallel code developed for doing pore scale simulations, the continuum grid-based framework is based on the STOMP (Subsurface Transport Over Multiple Phases) code developed at PNNL. Future work will focus on combining the frameworks together to perform multiscale, multiphysics simulations of reactive subsurface flow.

  7. A SOA-based architecture framework

    Aalst, van der, WMP Wil; Beisiegel, M; Hee, van, .; König, D.; Stahl, C Christian

    2007-01-01

    In this paper we present first results of a SOA-based architecture framework. The architecture framework is required to be close to industry standards, especially to service component architecture (SCA), language independent (i.e. it is adoptable) and the building blocks of a system, activities and data, are first class citizens. We present a meta model of the architecture framework and discuss its concepts in detail.

  8. A Framework for Enterprise Operating Systems Based on Zachman Framework

    Ostadzadeh, S. Shervin; Rahmani, Amir Masoud

    Nowadays, the Operating System (OS) isn't only the software that runs your computer. In the typical information-driven organization, the operating system is part of a much larger platform for applications and data that extends across the LAN, WAN and Internet. An OS cannot be an island unto itself; it must work with the rest of the enterprise. Enterprise wide applications require an Enterprise Operating System (EOS). Enterprise operating systems used in an enterprise have brought about an inevitable tendency to lunge towards organizing their information activities in a comprehensive way. In this respect, Enterprise Architecture (EA) has proven to be the leading option for development and maintenance of enterprise operating systems. EA clearly provides a thorough outline of the whole information system comprising an enterprise. To establish such an outline, a logical framework needs to be laid upon the entire information system. Zachman Framework (ZF) has been widely accepted as a standard scheme for identifying and organizing descriptive representations that have prominent roles in enterprise-wide system development. In this paper, we propose a framework based on ZF for enterprise operating systems. The presented framework helps developers to design and justify completely integrated business, IT systems, and operating systems which results in improved project success rate.

  9. Fractal actors and infrastructures

    Bøge, Ask Risom

    2011-01-01

    -network-theory (ANT) into surveillance studies (Ball 2002, Adey 2004, Gad & Lauritsen 2009). In this paper, I further explore the potential of this connection by experimenting with Marilyn Strathern’s concept of the fractal (1991), which has been discussed in newer ANT literature (Law 2002; Law 2004; Jensen 2007). I...... under surveillance. Based on fieldwork conducted in 2008 and 2011 in relation to my Master’s thesis and PhD respectively, I illustrate fractal concepts by describing the acts, actors and infrastructure that make up the ‘DNA surveillance’ conducted by the Danish police....

  10. Modeling and training emotional talking faces of virtual actors in synthetic movies

    Karunaratne, Savant; Yan, Hong

    2000-05-01

    This paper presents an overview of a virtual actor system composed of several subsystems designed to automate some of these animation tasks. Our emphasis is on the facial animation of virtual actors. The paper specifically details the situations processor component of the framework, which is a major building block in the automatic virtual actor system. An expert system using a fuzzy knowledge-based control system is used to realize the automated system. Fuzzy linguistic rules are used to train virtual actors to know the appropriate emotions and gestures to use in different situations of a synthetic movie, the higher level parameters of which are provided by human directors. Theories of emotion, personality, dialogue, and acting, as well as empirical evidence is incorporated into our framework and knowledge bases to produce promising results.

  11. Determinants of Actor Rationality

    Ellegaard, Chris

    Industrial companies must exercise influence on their suppliers (or supplier actors). Actor rationality is a central theme connected to this management task. In this article, relevant literature is studied with the purpose of shedding light on determinants of actor rationality. Two buyer......-supplier relations are investigated in a multiple case study, leading to the proposal of various additional factors that determine and shape actor rationality. Moreover a conceptual model of rationality determinants in the buyer-supplier relation is proposed, a model that may help supply managers analyse and...... understand actor rationalities. Finally managerial implications are discussed....

  12. A survey of actor-critic reinforcement learning: standard and natural policy gradients

    Grondman, Ivo; Busoniu, Lucian; Lopes, Gabriel; Babuska, Robert

    2012-01-01

    International audience Policy gradient based actor-critic algorithms are amongst the most popular algorithms in the reinforcement learning framework. Their advantage of being able to do policy search using low-variance gradient estimates has made them useful in several real-life applications, such as robotics, power control and finance. Although general surveys on reinforcement learning techniques already exist, no survey is specifically dedicated to actor-critic algorithms in particular. ...

  13. The Master model on multi-actor and multilevel social responsibilities: A conceptual framework for policies and governance on stakeholders’ social responsibilities

    Ashley, Patricia Almeida

    2011-01-01

    textabstractThis working paper contributes to a collective discussion in a workshop occurring in January 2011 at the International Institute of Social Studies, bringing scholars from Europe and Brazil and aiming inter-university research collaboration on linking policies on social responsibility to development and equity. The paper serves as an introductory discussion for reframing the concept of corporate social responsibility into a broader umbrella concept of multi-actor and multilevel soc...

  14. Editorial of the Special Issue on Human-Technology Interaction and Technology Adoption: Exploring Frameworks other than Actor-Network Theory

    Tanev, Stoyan

    2014-01-01

    Actor-network theory (ANT) has established itself as a valuable resource for the analysis of technology innovation and adoption. One of the main reasons for the success of the Innovation Translation Model (a specific instantiation of ANT) is the fact that it fits very well the emerging dominance of ecosystem or multiple stakeholder perspectives on technology development and technology adoption. At the same time the variety of technology adoption contexts would easily undermine the credibility...

  15. Beyond Nation-Based Frameworks

    Ørum, Tania

    In his study of Robert Rauschenberg and the Global Rise of American Art (Ikegami, The Great Migrator, 2010) Hiroko Ikegami argues that ”it is necessary to go beyond the nation-based framework” and ”beyond the binary of the global and the local” and look at postwar art ”in a wider, transnational and...

  16. Fully Abstract Game Semantics for Actors

    Wang, Yong

    2014-01-01

    Along the way paved by the recent concurrent game semantics for process algebra CCS and $\\pi$-calculus, based on the basic characteristics of the actor computational model and the very reductive semantics for actors, we establish a fully abstract concurrent game semantics for actors by borrowing the algebraic structure from CCS. This semantics can both be seen as an innocent presheaf semantics, and a concurrent game semantics.

  17. Perceptual identification and acoustic measures of the resonant voice based on "Lessac's Y-Buzz"--a preliminary study with actors.

    Barrichelo, Viviane M O; Behlau, Mara

    2007-01-01

    This study aimed to verify whether the resonant voice based on Lessac's Y-Buzz can be perceived by listeners as resonant and different from habitual voice and to compare them to determine whether this sound exploration improves the vocal production. Nine newly graduated actors, six men and three women without voice complaints, were the subjects. They received a session of Lessac's Y-Buzz training from the primary investigator. Before training, they were asked to sustain the vowel /i/ at comfortable frequency and habitual loudness. After training, they were requested to sustain the Y-Buzz they had learned at a comfortable frequency and habitual loudness. Three speech-language pathologists (SLP) trained in voice developed an auditory-perceptive analysis. The pre- and posttraining voice samples were randomly spliced together, edited, and presented in pairs to perceptual judges who were asked to identify the most resonant of the pair. The voice samples were also acoustically compared through the Hoarseness Diagram and acoustic measures using the VoxMetria Software (CTS, version 2.0s, Brazil). The Y-Buzz trials were identified as resonant voice in 74% of the comparisons. The acoustic measures showed a statistically significant decrease of irregularity (P = 0.002) and shimmer (P = 0.38). The Hoarseness Diagram demonstrated how the resonant voice moved toward the normality for irregularity and noise components. The results showed that the resonant voice based on the Y-Buzz can be identified as resonant and different from normal voicing in the same subject, and it apparently implies a better vocal production demonstrating a significant decrease of shimmer and irregularity through the Hoarseness Diagram evaluation. PMID:16458480

  18. Editorial of the Special Issue on Human-Technology Interaction and Technology Adoption: Exploring Frameworks other than Actor-Network Theory

    Tanev, Stoyan

    2014-01-01

    Actor-network theory (ANT) has established itself as a valuable resource for the analysis of technology innovation and adoption. One of the main reasons for the success of the Innovation Translation Model (a specific instantiation of ANT) is the fact that it fits very well the emerging dominance of...... ecosystem or multiple stakeholder perspectives on technology development and technology adoption. At the same time the variety of technology adoption contexts would easily undermine the credibility of any methodology pretending to possess the ability to adequately address all possible contexts and research...... challenges. This is why in this special issue we have focused on exploring, in parallel to ANT, other approaches that have also proven valuable in studying technology adoption and human-technology interaction. Some of these approaches share significant common ground with ANT. They also diverge in some...

  19. Thinking Management and Leadership within Colleges and Schools Somewhat Differently: A Practice-Based, Actor-Network Theory Perspective

    Mulcahy, Dianne; Perillo, Suzanne

    2011-01-01

    This article examines the significance of materiality for management and leadership in education using resources provided by actor-network theory (ANT). Espousing the idea that human interactions are mediated by material objects and that these objects participate in the production of practices, ANT affords thinking management and leadership in a…

  20. Agent-Based Data Integration Framework

    Łukasz Faber

    2014-01-01

    Combining data from diverse, heterogeneous sources while facilitating a unified access to it is an important (albeit difficult) task. There are various possibilities of performing it. In this publication, we propose and describe an agent-based framework dedicated to acquiring and processing distributed, heterogeneous data collected from diverse sources (e.g., the Internet, external software, relational, and document databases). Using this multi-agent-based approach in the aspects of the gener...

  1. International Political Actorness of the EU: the Dichotomy of Agent and Structure

    Gnatyuk Nikolay Nikolaevich

    2015-04-01

    Full Text Available Theories of international relations, regional integration and comparative politics have significant difficulties with the classification of the EU as an actor of international politics. At the same time the EU international activities challenge not only the idea of superior role of the state in international relations but also the structure of international system. The article states that conceptualization of international actors should not contrast two levels of analyses – the internal condition of actor and the structure of international system, but treat them as being neutral. Based on suggestions of pluralistic approach, the article argues that primary burden of progress in the classification of the EU as an actor of international politics is due to one way interpretation of “structure and agents problem”. In this regard the constructivist idea of treating actor and structure as mutually constructive may be a useful starting point. Unlike attempts to consider the international activities of the EU as “state like” entity, this approach allows taking into account the EU integrative nature, which is characterized by the presence of individual features of the traditional international actors. Therefore, the concept of international actorness as an alternative to state-centered approaches may offer a theoretical and methodological framework for the understanding of different elements and building-blocks of the “EU as an international actor”. Interaction of variables of internal and external levels composes a harmonized system for evaluating the EU international activity.

  2. Actor Network Theory Approach and its Application in Investigating Agricultural Climate Information System

    Maryam Sharifzadeh

    2013-03-01

    Full Text Available Actor network theory as a qualitative approach to study complex social factors and process of socio-technical interaction provides new concepts and ideas to understand socio-technical nature of information systems. From the actor network theory viewpoint, agricultural climate information system is a network consisting of actors, actions and information related processes (production, transformation, storage, retrieval, integration, diffusion and utilization, control and management, and system mechanisms (interfaces and networks. Analysis of such systemsembody the identification of basic components and structure of the system (nodes –thedifferent sources of information production, extension, and users, and the understanding of how successfully the system works (interaction and links – in order to promote climate knowledge content and improve system performance to reach agricultural development. The present research attempted to introduce actor network theory as research framework based on network view of agricultural climate information system.

  3. A novel adaptive PID controller based on Actor-Critic learning%基于执行器-评价器学习的自适应PID控制

    陈学松; 杨宜民

    2011-01-01

    Owing to the lack of the self-tuning for PID parameters in typical PID(T-PID) controllers, a self tuning PID control strategy using Actor-Critic learning(AC-PID) is proposed. Actor-Critic learning is used to tune PID parameters of the controller in an adaptive way. The policy function of Actor and the value function of Critic are approximated by a simple radial basis function neural network. The system error, the first and the second-order differences of system error are employed as inputs to the radial basis function network. The mapping from the system states to PID parameters is realized by the Actor, and the temporal difference(TD) error is evaluated by the Critic. Based on the structure of Actor-Critic learning and TD error performance index, the block diagram of the controller is developed. Two simulation results show that the proposed controller is efficient and perfectly adaptable with fast responses, providing better performances than the typical PID controller.%针对传统PID控制器无法在线自整定参数的不足,提出了一种基于执行器一评估器(Actor-Critic,AC)学习的自适应PID控制器结构与学习算法.该控制器利用AC学习实现PID参数的自适应整定,采用一个径向基函数网络同时对Actor的策略函数和Critic的值函数进行逼近.径向基函数网络的输入为系统误差、误差的一次差分和二次差分,Actor实现系统状态到PID参数的映射,Critic则对Actor的输出进行评判并且生成时序差分(temporaldifference,TD)误差信号.基于AC学习的体系结构和TD误差性能指标,给出了控制器设计的步骤流程图.两个仿真实验表明:与传统的PID控制器相比,基于AC学习的PID控制器在响应速度和自适应能力方面要优于传统PID控制器.

  4. Actor/Character Dualism

    Riis, Johannes

    2012-01-01

    Our perception of agency may be inherently fallible, and this may explain not only our general awareness of actors when engaged in fictional characters but also the specific case of paradoxical characters...

  5. An Argumentation Framework based on Paraconsistent Logic

    Umeda, Yuichi; Takahashi, Takehisa; Sawamura, Hajime

    Argumentation is the most representative of intelligent activities of humans. Therefore, it is natural to think that it could have many implications for artificial intelligence and computer science as well. Specifically, argumentation may be considered a most primitive capability for interaction among computational agents. In this paper we present an argumentation framework based on the four-valued paraconsistent logic. Tolerance and acceptance of inconsistency that this logic has as its logical feature allow for arguments on inconsistent knowledge bases with which we are often confronted. We introduce various concepts for argumentation, such as arguments, attack relations, argument justification, preferential criteria of arguments based on social norms, and so on, in a way proper to the four-valued paraconsistent logic. Then, we provide the fixpoint semantics and dialectical proof theory for our argumentation framework. We also give the proofs of the soundness and completeness.

  6. Agent-Based Data Integration Framework

    Łukasz Faber

    2014-01-01

    Full Text Available Combining data from diverse, heterogeneous sources while facilitating a unified access to it is an important (albeit difficult task. There are various possibilities of performing it. In this publication, we propose and describe an agent-based framework dedicated to acquiring and processing distributed, heterogeneous data collected from diverse sources (e.g., the Internet, external software, relational, and document databases. Using this multi-agent-based approach in the aspects of the general architecture (the organization and management of the framework, we create a proof-of-concept implementation. The approach is presented using a sample scenario in which the system is used to search for personal and professional profiles of scientists.

  7. Thiophene-based covalent organic frameworks

    Bertrand, Guillaume H. V.; Michaelis, Vladimir K.; Ong, Ta-Chung; Griffin, Robert G.; Dincă, Mircea

    2013-01-01

    We report the synthesis and characterization of covalent organic frameworks (COFs) incorporating thiophene-based building blocks. We show that these are amenable to reticular synthesis, and that bent ditopic monomers, such as 2,5-thiophenediboronic acid, are defect-prone building blocks that are susceptible to synthetic variations during COF synthesis. The synthesis and characterization of an unusual charge transfer complex between thieno[3,2-b]thiophene-2,5-diboronic acid and tetracyanoquino...

  8. Opponent actor learning (OpAL): modeling interactive effects of striatal dopamine on reinforcement learning and choice incentive.

    Collins, Anne G E; Frank, Michael J

    2014-07-01

    The striatal dopaminergic system has been implicated in reinforcement learning (RL), motor performance, and incentive motivation. Various computational models have been proposed to account for each of these effects individually, but a formal analysis of their interactions is lacking. Here we present a novel algorithmic model expanding the classical actor-critic architecture to include fundamental interactive properties of neural circuit models, incorporating both incentive and learning effects into a single theoretical framework. The standard actor is replaced by a dual opponent actor system representing distinct striatal populations, which come to differentially specialize in discriminating positive and negative action values. Dopamine modulates the degree to which each actor component contributes to both learning and choice discriminations. In contrast to standard frameworks, this model simultaneously captures documented effects of dopamine on both learning and choice incentive-and their interactions-across a variety of studies, including probabilistic RL, effort-based choice, and motor skill learning. PMID:25090423

  9. Games as Actors - Interaction, Play, Design, and Actor Network Theory

    Jessen, Jari Due; Jessen, Carsten

    2014-01-01

    When interacting with computer games, users are forced to follow the rules of the game in return for the excitement, joy, fun, or other pursued experiences. In this paper, we investigate how games a chieve these experiences in the perspective of Actor Network Theory (ANT). Based on a qualitative...... data from a study of board games , computer games, and exergames, we conclude that games are actors that produce experiences by exercising power over the user’ s abilities, for example their cognitive functions. Games are designed to take advantage of the characteristics of the human players......, and by doing so they create in humans what in modern play theory is known as a “state of play”...

  10. Ignorant Actors in the Resource Rich World of the Knowledge Based Economy - On Rational Management in an Experimentally Organized Economy (EOE)

    Eliasson, Gunnar

    2004-01-01

    The internal dynamics of the Experimentally Organized Economy (EOE) force actors to constantly innovate to survive competition from all other actors in the same situation, or from new actors entering the market. Since ignorance of circumstances that may be critical for survival characterize the situation of each actor, business mistakes abound. With tacit knowledge distributed over hierarchies and markets analytical methods of management not only feed management with the wrong information but...

  11. Test Case Generation by Symbolic Execution: Basic Concepts, a CLP-based Instance, and Actor-based Concurrency

    Albert Albiol, Elvira; Arenas Sánchez, Purificación; Gómez Zamalloa, Miguel; Rojas, José Miguel

    2014-01-01

    The focus of this tutorial is white-box test case generation (TCG) based on symbolic execution. Symbolic execution consists in executing a program with the contents of its input arguments being symbolic variables rather than concrete values. A symbolic execution tree characterizes the set of execution paths explored during the symbolic execution of a program. Test cases can be then obtained from the successful branches of the tree. The tutorial is split into three parts: (1) The first part ov...

  12. Thiophene-based covalent organic frameworks.

    Bertrand, Guillaume H V; Michaelis, Vladimir K; Ong, Ta-Chung; Griffin, Robert G; Dincă, Mircea

    2013-03-26

    We report the synthesis and characterization of covalent organic frameworks (COFs) incorporating thiophene-based building blocks. We show that these are amenable to reticular synthesis, and that bent ditopic monomers, such as 2,5-thiophenediboronic acid, are defect-prone building blocks that are susceptible to synthetic variations during COF synthesis. The synthesis and characterization of an unusual charge transfer complex between thieno[3,2-b]thiophene-2,5-diboronic acid and tetracyanoquinodimethane enabled by the unique COF architecture is also presented. Together, these results delineate important synthetic advances toward the implementation of COFs in electronic devices. PMID:23479656

  13. Using Ericsson NorARC's frameworks as test bed for dynamic change of behavior based on CompositeStates

    Wiklund, Arne

    2003-01-01

    Frameworks are a widely used re-use technique in the object-oriented community today. A framework re-uses both code and design and makes it easier to develop new components. Ericsson NorARC (Norwegian Applied Research Center) has developed a set of frameworks; JavaFrame, ActorFrame and ServiceFrame to aid advance service development. JavaFrame is a modeling kit for Java with good support for state machines. ActorFrame is a framework emphasizing the actor and role notion. Ser...

  14. How Initial Prevalence Moderates Network-based Smoking Change: Estimating Contextual Effects with Stochastic Actor-based Models.

    Adams, Jimi; Schaefer, David R

    2016-03-01

    We use an empirically grounded simulation model to examine how initial smoking prevalence moderates the effectiveness of potential interventions designed to change adolescent smoking behavior. Our model investigates the differences that result when manipulating peer influence and smoker popularity as intervention levers. We demonstrate how a simulation-based approach allows us to estimate outcomes that arise (1) when intervention effects could plausibly alter peer influence and/or smoker popularity effects and (2) across a sample of schools that match the range of initial conditions of smoking prevalence in U.S. schools. We show how these different initial conditions combined with the exact same intervention effects can produce substantially different outcomes-for example, effects that produce smoking declines in some settings can actually increase smoking in others. We explore the form and magnitude of these differences. Our model also provides a template to evaluate the potential effects of alternative intervention scenarios. PMID:26957133

  15. Development Sociology. Actor Perspectives

    Long, N.E.

    2001-01-01

    Using case studies and empirical material from Africa and Latin America, Development Sociology focuses on the theoretical and methodological foundations of an actor-oriented and social constructionist form of analysis. This style of analysis is opposed to the traditional structuralist/institutional

  16. Effective Location Management of Mobile Actors in Wireless Sensor and Actor Networks

    Nauman Aslam

    2009-02-01

    Full Text Available Recent years have witnessed an increasing availability of heterogeneous sensor networks that consist of a large number of resource constrained nodes (sensors and a small number of powerful resource rich nodes (actors. Such heterogeneous Wireless Sensor Actor Network (WSANs offer improvement of sensor networks' capacity/coverage, energy conservation and network lifetime. This paper investigates the case where sensors are organized into clusters and mobile actors are used for maintaining an energy efficient topology by periodically manipulating their geographical position. We present an elegant technique that allows actor nodes to find an optimal geographical location with respect to their associated cluster heads such that the overall energy consumed is minimized. The proposed technique includes a weighted cost function based on the residual energy levels of cluster heads that allows the mobile actor to optimally fine-tune its geographical location. We present simulation results that demonstrate a significant increase of network lifetime over the traditional cluster based WSN deployments.

  17. On MDA - SOA based Intercloud Interoperability framework

    Tahereh Nodehi

    2013-01-01

    Full Text Available Cloud computing has been one of the latest technologies which assures reliable delivery of on - demand computing services over the Internet. Cloud service providers have established geographically distributed data centers and computing resources, which are available online as service. The clouds operated by different service providers working together in collaboration can open up lots more spaces for innovative scenarios with huge amount of resources provisioning on demand. However, current cloud systems do not support intercloud interoperability. This paper is thus motivated to address Intercloud Interoperabilityby analyzing different methodologies that have been applied to resolve various scenarios of interoperability. Model Driven Architecture (MDA and Service Oriented Architecture (SOA method have been used to address interoperability in various scenarios, which also opens up spaces to address intercloud interoperability by making use of these well accepted methodologies. The focus of this document is to show Intercloud Interoperability can be supported through a Model Driven approach and Service Oriented systems. Moreover, the current state of the art in Intercloud, concept and benefits of MDA and SOA are discussed in the paper. At the same time this paper also proposes a generic architecture for MDA - SOA based framework, which can be useful for developing applications which will require intercloud interoperability. The paper justi fies the usability of the framework by a use - case scenario for dynamic workload migration among heterogeneous clouds.

  18. An Agent-based framework for cooperation in Supply Chain

    Benaissa Ezzeddine

    2012-09-01

    Full Text Available Supply Chain coordination has become a critical success factor for Supply Chain management (SCM and effectively improving the performance of organizations in various industries. Companies are increasingly located at the intersection of one or more corporate networks which are designated by Supply Chain. Managing this chain is mainly based on an 'information sharing' and redeployment activities between the various links that comprise it. Several attempts have been made by industrialists and researchers to educate policymakers about the gains to be made by the implementation of cooperative relationships. The approach presented in this paper here is among the works that aim to propose solutions related to information systems distributed Supply Chains to enable the different actors of the chain to improve their performance. We propose in particular solutions that focus on cooperation between actors in the Supply Chain.

  19. Market based framework for multiple AUVs cooperation

    YOU Guang-xin; PANG Yong-jie; JIANG Da-peng

    2005-01-01

    A"Market" based framework for multiple AUVs team is introduced in this paper.It is a distributed meta-level task allocation framwork. The formulation and the basic concepts of the "Market" such as "goods" and "price" are discussed first, then the basic algorithm of the "auction". The loosely coupled v-MDTSP tasks are considered as an example of the task allocation mission. A multiple AUV team controller and a detailed algorithm are developed for such applications. The simulation results show that the controller has the advantages such as robustness and low complexity and it can achieve better optimization results than the classical central controller (such as GA) in some tasks. And the comparison of two different local solvers also implies that we should get the reasonable task allocation even not using the high quality algorithm, which can considerably decrease the cooperation computation.

  20. ROAn, a ROOT based Analysis Framework

    Lauf, Thomas

    2013-01-01

    The ROOT based Offline and Online Analysis (ROAn) framework was developed to perform data analysis on data from Depleted P-channel Field Effect Transistor (DePFET) detectors, a type of active pixel sensors developed at the MPI Halbleiterlabor (HLL). ROAn is highly flexible and extensible, thanks to ROOT's features like run-time type information and reflection. ROAn provides an analysis program which allows to perform configurable step-by-step analysis on arbitrary data, an associated suite of algorithms focused on DePFET data analysis, and a viewer program for displaying and processing online or offline detector data streams. The analysis program encapsulates the applied algorithms in objects called steps which produce analysis results. The dependency between results and thus the order of calculation is resolved automatically by the program. To optimize algorithms for studying detector effects, analysis parameters are often changed. Such changes of input parameters are detected in subsequent analysis runs and...

  1. Biomass markets. Growth strategy and challenges for French actors

    This study comprises three reports. The first one is an executive summary which focuses on the main aspects of the evolution of the activity in the biomass sector, and highlights factors of change and their strategic consequences. The second one proposes an overview of the situation of biomass French markets, analyses growth strategies adopted by actors of the biomass sector (development of new production capacities, international growth, development of strategies based on several energies, diversification of prospects, innovation and improvement of installation efficiency), and discusses the main strategic challenges on the medium term. The third report proposes a presentation of the context of French biomass markets (political, regulatory and energetic framework, energetic assessment and assessment of the waste-based sector, economic context, housing stock, and other contextual factors), a presentation of the biomass French market (data for 2005-2013, dynamics of three specific segments: solid biomass, renewable urban wastes, and biogas), and a description of the competitive landscape (economic structure, actors) and of the 15 main actors

  2. Dissemination of Word of Mouth Based on SNA Centrality Modeling and Power of Actors - An Empirical Analysis of Internet Word of Mouth

    2014-01-01

    Combined with social network analysis (SNA), the actors¡¯ dissemination net of word of mouth is analyzed, and the network of "concern" and "being concerned" is described. With index of centrality measure, three aspects of the actors in the word-of-mouth network are discussed in terms of the degree centrality, betweenness centrality, closeness centrality. The dimensions of the power of actors are divided, and the sample data of word-of-mouth spreading is analyzed with hierarchical clustering. ...

  3. Integrated Agent-Based and Production Cost Modeling Framework for Renewable Energy Studies: Preprint

    Gallo, Giulia

    2015-10-07

    The agent-based framework for renewable energy studies (ARES) is an integrated approach that adds an agent-based model of industry actors to PLEXOS and combines the strengths of the two to overcome their individual shortcomings. It can examine existing and novel wholesale electricity markets under high penetrations of renewables. ARES is demonstrated by studying how increasing levels of wind will impact the operations and the exercise of market power of generation companies that exploit an economic withholding strategy. The analysis is carried out on a test system that represents the Electric Reliability Council of Texas energy-only market in the year 2020. The results more realistically reproduce the operations of an energy market under different and increasing penetrations of wind, and ARES can be extended to address pressing issues in current and future wholesale electricity markets.

  4. Integrated Agent-Based and Production Cost Modeling Framework for Renewable Energy Studies

    Gallo, Giulia

    2016-01-08

    The agent-based framework for renewable energy studies (ARES) is an integrated approach that adds an agent-based model of industry actors to PLEXOS and combines the strengths of the two to overcome their individual shortcomings. It can examine existing and novel wholesale electricity markets under high penetrations of renewables. ARES is demonstrated by studying how increasing levels of wind will impact the operations and the exercise of market power of generation companies that exploit an economic withholding strategy. The analysis is carried out on a test system that represents the Electric Reliability Council of Texas energy-only market in the year 2020. The results more realistically reproduce the operations of an energy market under different and increasing penetrations of wind, and ARES can be extended to address pressing issues in current and future wholesale electricity markets.

  5. Model based risk assessment - the CORAS framework

    Gran, Bjoern Axel; Fredriksen, Rune; Thunem, Atoosa P-J.

    2004-04-15

    Traditional risk analysis and assessment is based on failure-oriented models of the system. In contrast to this, model-based risk assessment (MBRA) utilizes success-oriented models describing all intended system aspects, including functional, operational and organizational aspects of the target. The target models are then used as input sources for complementary risk analysis and assessment techniques, as well as a basis for the documentation of the assessment results. The EU-funded CORAS project developed a tool-supported methodology for the application of MBRA in security-critical systems. The methodology has been tested with successful outcome through a series of seven trial within the telemedicine and ecommerce areas. The CORAS project in general and the CORAS application of MBRA in particular have contributed positively to the visibility of model-based risk assessment and thus to the disclosure of several potentials for further exploitation of various aspects within this important research field. In that connection, the CORAS methodology's possibilities for further improvement towards utilization in more complex architectures and also in other application domains such as the nuclear field can be addressed. The latter calls for adapting the framework to address nuclear standards such as IEC 60880 and IEC 61513. For this development we recommend applying a trial driven approach within the nuclear field. The tool supported approach for combining risk analysis and system development also fits well with the HRP proposal for developing an Integrated Design Environment (IDE) providing efficient methods and tools to support control room systems design. (Author)

  6. TBRF: Trust Based Routing Framework for WSNs

    Kushal Gulaskar

    2014-03-01

    Full Text Available The multi-hop routing in wireless sensor networks (WSNs offers little protection against identity deception through replaying routing information. An adversary can exploit this defect to launch various harmful or even devastating attacks against the routing protocols, including sinkhole attacks, wormhole attacks and Sybil attacks. The situation is further aggravated by mobile and harsh network conditions. Traditional cryptographic techniques or efforts at developing trust-aware routing protocols do not effectively address this severe problem. To secure the WSNs against adversaries misdirecting the multi-hop routing, we have designed and implemented TBRF, a robust trust-aware routing framework for dynamic WSNs. Without tight time synchronization or known geographic information, TBRF provides trustworthy and energy-efficient route. Most importantly, TBRF proves effective against those harmful attacks developed out of identity deception; the resilience of TBRF is verified through extensive evaluation with both simulation and empirical experiments on large-scale WSNs under various scenarios including mobile and RF-shielding network conditions. Further, we have implemented a low-overhead TBRF module in TinyOS; as demonstrated, this implementation can be incorporated into existing routing protocols with the least effort. Based on TBRF, we also demonstrated a proof-of-concept mobile target detection application that functions well against an anti-detection mechanism

  7. Transaction-Based Building Controls Framework, Volume 1: Reference Guide

    Somasundaram, Sriram; Pratt, Robert G.; Akyol, Bora A.; Fernandez, Nicholas; Foster, Nikolas AF; Katipamula, Srinivas; Mayhorn, Ebony T.; Somani, Abhishek; Steckley, Andrew C.; Taylor, Zachary T.

    2014-04-28

    This document proposes a framework concept to achieve the objectives of raising buildings’ efficiency and energy savings potential benefitting building owners and operators. We call it a transaction-based framework, wherein mutually-beneficial and cost-effective market-based transactions can be enabled between multiple players across different domains. Transaction-based building controls are one part of the transactional energy framework. While these controls realize benefits by enabling automatic, market-based intra-building efficiency optimizations, the transactional energy framework provides similar benefits using the same market -based structure, yet on a larger scale and beyond just buildings, to the society at large.

  8. Test Case Generation of Actor Systems

    Albert Albiol, Elvira; Arenas Sánchez, Purificación; Gómez Zamalloa, Miguel

    2015-01-01

    Testing is a vital part of the software development process. It is even more so in the context of concurrent languages, since due to undesired task interleavings and to unexpected behaviours of the underlying task scheduler, errors can go easily undetected. Test case generation (TCG) is the process of automatically generating test inputs for interesting coverage criteria, which are then applied to the system under test. This paper presents a TCG framework for actor systems, which consists of...

  9. Developing virtual actors inspired by real actors’ practice

    Silva, Rogério E. da; Santos, Manuel Filipe; Iurgel, Ido

    2011-01-01

    Autonomous Digital Actors represent the next step in animating 3D characters. How to create such virtual actors remains an open question. This work presents and discusses an agent architecture derived from how real actors learn their art from acting schools. The knowledge base relies on a rule-based system where each rule encodes explicit knowledge into a classification vector which allows agents to suggest performances even for unforeseen situations, and to adjust their ...

  10. A Planning based Framework for Essay Generation

    Qin, Bing; Tang, Duyu; Geng, Xinwei; Ning, Dandan; Liu, Jiahao; Liu, Ting

    2015-01-01

    Generating an article automatically with computer program is a challenging task in artificial intelligence and natural language processing. In this paper, we target at essay generation, which takes as input a topic word in mind and generates an organized article under the theme of the topic. We follow the idea of text planning \\cite{Reiter1997} and develop an essay generation framework. The framework consists of three components, including topic understanding, sentence extraction and sentence...

  11. A Scalable Testing Framework for Location-Based Services

    Jiang Yu; Andrew Tappenden; James Miller; Michael Smith

    2009-01-01

    A novel testing framework for location based services is introduced. In particular, the paper showcases a novel architecture for such a framework. The implementation of the framework illustrates both the functionality and the feasibility of the framework proposed and the utility of the architecture. The new framework is evaluated through comparison to several other methodologies currently available for the testing of location-based applications. A case study is presented in which the testing framework was applied to a typical mobile service tracking system. It is concluded that the proposed testing framework achieves the best coverage of the entire location based service testing problem of the currently available methodologies; being equipped to test the widest array of application attributes and allowing for the automation of testing activities.

  12. A Framework for Socio-Scientific Issues Based Education

    Presley, Morgan L.; Sickel, Aaron J.; Muslu, Nilay; Merle-Johnson, Dominike; Witzig, Stephen B.; Izci, Kemal; Sadler, Troy D.

    2013-01-01

    Science instruction based on student exploration of socio-scientific issues (SSI) has been presented as a powerful strategy for supporting science learning and the development of scientific literacy. This paper presents an instructional framework for SSI based education. The framework is based on a series of research studies conducted in a diverse…

  13. The role of institutions as actors influencing Uganda’s cassava sector

    Cedric Mutyaba

    2016-04-01

    Full Text Available We aim at mapping out a detailed framework that reveals the proportionate flow of cassava and its products along the value chain (VC. Furthermore, we aim at establishing the role of institutions and the linkages between institutions and other VC actors that influence the cassava VC in Uganda. We use both primary and secondary data obtained from four regions in Uganda. Results show that farmers, processors, transporters, traders, consumers and institutions are the major actors. There are four categories of institutions, viz, government, non-government, community based organisations and international agencies. Roles performed by institutions include: development and enforcement of policies, Research and Development (R&D, capacity building, and creation of market access linkages for cassava and its products. Findings reveal that there is no clear nexus and no coordination among farmers/producers, processors, traders, transporters and consumers. However, institutions are well coordinated and play various roles along the VC to influence the dynamics of actors. Policy-wise it is important to establish strong private-public partnerships to bridge the impaired linkages between the actors (farmers/producers, processors, traders, transporters, and consumers and institutions. Strong partnerships are envisaged to reduce the associated transaction costs amongst the actors.

  14. Temporal Logic Motion Control using Actor-Critic Methods

    Ding, Xu Chu; Lahijanian, Morteza; Paschalidis, Ioannis Ch; Belta, Calin A

    2012-01-01

    In this paper, we consider the problem of deploying a robot from a specification given as a temporal logic statement about some properties satisfied by the regions of a large, partitioned environment. We assume that the robot has noisy sensors and actuators and model its motion through the regions of the environment as a Markov Decision Process (MDP). The robot control problem becomes finding the control policy maximizing the probability of satisfying the temporal logic task on the MDP. For a large environment, obtaining transition probabilities for each state-action pair, as well as solving the necessary optimization problem for the optimal policy are usually not computationally feasible. To address these issues, we propose an approximate dynamic programming framework based on a least-square temporal difference learning method of the actor-critic type. This framework operates on sample paths of the robot and optimizes a randomized control policy with respect to a small set of parameters. The transition proba...

  15. New Actors and Alliances in Development

    Richey, Lisa Ann; Ponte, Stefano

    2014-01-01

    ‘New actors and alliances in development’ brings together an interdisciplinary group of scholars exploring how development financing and interventions are being shaped by a wider and more complex platform of actors than usually considered in the existing literature. The contributors also trace...... governments. Despite the diversity of these actors and alliances, several commonalities arise: they are often based on hybrid transnationalism and diffuse notions of development responsibility; rather than being new per se, they are newly being studied as practices that are now coming to be understood...... as ‘development’; and they are limited in their ability to act as agents of development by their lack of accountability or pro-poor commitment. The articles in this collection point to images and representations as increasingly important in development ‘branding’ and suggest fruitful new ground for critical...

  16. A Delegation-Based Cooperative Robotic Framework

    Doherty, Patrick; Heintz, Fredrik

    2011-01-01

    Cooperative robotic systems, such as unmanned aircraft systems, are becoming technologically mature enough to be integrated into civil society. To gain practical use and acceptance, a verifiable, principled and well-defined foundation for interactions between human operators and autonomous systems is needed. In this paper, we propose and specify such a formally grounded collaboration framework. Collaboration is formalized in terms of the concept of delegation and delegation is instantiated as...

  17. Obscurance-based Volume Rendering Framework

    Ruiz, Marc; Boada, Imma; Viola, Ivan; Bruckner, Stefan; Feixas, Miquel; Sbert, Mateu

    2008-01-01

    lighting effects in a faster way than global illumination. Its application in volume visualization is of special interest since it permits us to generate a high quality rendering at a low cost. In this paper, we propose an obscurancebased framework that allows us to obtain realistic and illustrative volume visualizations in an interactive manner. Obscurances can include color bleeding effects without additional cost. Moreover, we obtain a saliency map from the gradient of obscuran...

  18. Criteria-Based Framework for Software Product management

    Samer I. Mohamed; Islam A. M. ElMaddah; Ayman M. Wahba

    2010-01-01

    Value-Based Software Engineering (VBSE) becomes one of the most promising approaches for software product management [10]. It focuses on the critical role by which stakeholders and business core values affect decision making which in turn influence the product success. This paper illustrates the Criteria-Based approach for software product management through a computer based software framework. The framework can select the best candidate requirements for each release based on the stakeholders...

  19. Actors: From Audience to Provider

    Charlier, Bernadette

    2011-01-01

    This article describes and analyzes actors' experiences of distance learning systems in a wide variety of cultural and organizational contexts. In line with the project of this special series of issues, results of research, much of which is longitudinal, allow us to suggest answers to the following questions: Who are the actors of distance…

  20. Building up a citizen-based project of renewable energies. Energy transition by local actors: stakes and modalities - Recommendation guide

    This guide first presents the energy and social context which could lead to citizen-based projects, presents some European examples and identifies some French limitations, and defines a citizen-based project. The second part proposes an overview of such a project and its various steps, and outlines the importance of some basic actions: to build up a pilot group and to define the project, to choose the right moment and to retain control of the project, to communicate and to mobilise. The next part presents the project methodology: elaboration of specification, establishment of partnership, definition of a business model, choice of a legal status. The last part addresses how to mobilise local and citizen funding: own funds and bank loan, participation of citizen and local communities

  1. Cooperation over Water Resources as a Tool for Desecuritisation: the Israeli – Palestinian Environmental NGOs as Desecuritising Actor

    Bezen Balamir Coskun

    2016-01-01

    Full Text Available This article discusses the role of the Israeli and Palestinian environmental NGOs as desecuritising actors who have attempted to initiate a desecuritisation process. In this regard, the article first reviews the Copenhagen School's securitisation theory with a particular focus on the concept of desecuritisation and desecuritising actor. Based on the notion of desecuritisation, an analytical framework for analysis will be suggested here to integrate Israeli-Palestinian environmental NGOs' water management efforts as contributions in desecuritisation of relations between Israelis and Palestinians with wider conflict resolution efforts.

  2. Cooperation over Water Resources as a Tool for Desecuritisation: the Israeli – Palestinian Environmental NGOs as Desecuritising Actor

    Bezen Balamir Coskun

    2009-10-01

    Full Text Available This article discusses the role of the Israeli and Palestinian environmental NGOs as desecuritising actors who have attempted to initiate a desecuritisation process. In this regard, the article first reviews the Copenhagen School’s securitisation theory with a particular focus on the concept of desecuritisation and desecuritising actor. Based on the notion of desecuritisation, an analytical framework for analysis will be suggested here to integrate Israeli-Palestinian environmental NGOs’ water management efforts as contributions in desecuritisation of relations between Israelis and Palestinians with wider conflict resolution efforts.

  3. mSCTP Based Decentralized Mobility Framework

    Waqas A. Imtiaz

    2011-09-01

    Full Text Available To conceive the full potential of wireless IP services, Mobile Nodes (MNs must be able to roam seamlessly across different networks. Mobile Stream Control Transmission Protocol (mSCTP is a transport layer solution, which unlike Mobile IP (MIP, provides seamless mobility with minimum delay and negligible packet loss. However, mSCTP fails to locate the current IP address of the mobile node when Correspondent Node (CN wants to initiate a session. In this paper, we propose DHT Chord to provide the required location management. Chord is a P2P algorithm, which can efficiently provide the IP address of the called MN by using its key-value mapping. The proposed decentralized mobility framework collectively exploits the multihoming feature of mSCTP, and efficient key-value mapping of chord to provide seamless mobility. Suitability of the framework is analyzed by preliminary analysis of chord lookup efficiency, and mSCTP handover procedure using overlay weaver and NS-2. Performance analysis shows that mSCTP multihoming feature and Chord efficient key-value mapping can provide a non-delayed, reliable, and an efficient IP handover solution.

  4. Template-Based Geometric Simulation of Flexible Frameworks

    Stephen A. Wells

    2012-03-01

    Full Text Available Specialised modelling and simulation methods implementing simplified physical models are valuable generators of insight. Template-based geometric simulation is a specialised method for modelling flexible framework structures made up of rigid units. We review the background, development and implementation of the method, and its applications to the study of framework materials such as zeolites and perovskites. The “flexibility window” property of zeolite frameworks is a particularly significant discovery made using geometric simulation. Software implementing geometric simulation of framework materials, “GASP”, is freely available to researchers.

  5. A Design Method of Business Application Framework Based on

    2001-01-01

    This paper discusses design and implementation method of BusinessAppl ication Framework based on software patterns, and then presents MVC pattern of a rchitecture and the method of dynamical update promulgation for Business Applica tion Framework. We discuss adaptation of Abstract Factory for the kern el functionality of Business Application Framework, such as data creation, manip ulation, composition, etc. It also presents class model and its class st ructure of Abstract Factory pattern. Finally, we briefly discuss the update, mod ification, and reconstruction method of Business Application Framework.

  6. Hacia un entrenamiento del actor

    Urieta Lago, Amparo

    2010-01-01

    Esta investigación está basada en la intención de crear una guía de entrenamiento para el actor, que busca asumir un compromiso con su cuerpo, como instrumento para la creación escénica. El trabajo del actor-actriz está irremediablemente vinculado a su cuerpo, todo lo humano se enmarca en un cuerpo vivido, en el espacio y en el tiempo, no es algo neutral. Sabemos que cada actor-actriz, tiene una noción de su esquema corporal, entendiendo por esquema corporal la representación en imágenes de l...

  7. Developing a theoretical framework for complex community-based interventions.

    Angeles, Ricardo N; Dolovich, Lisa; Kaczorowski, Janusz; Thabane, Lehana

    2014-01-01

    Applying existing theories to research, in the form of a theoretical framework, is necessary to advance knowledge from what is already known toward the next steps to be taken. This article proposes a guide on how to develop a theoretical framework for complex community-based interventions using the Cardiovascular Health Awareness Program as an example. Developing a theoretical framework starts with identifying the intervention's essential elements. Subsequent steps include the following: (a) identifying and defining the different variables (independent, dependent, mediating/intervening, moderating, and control); (b) postulating mechanisms how the independent variables will lead to the dependent variables; (c) identifying existing theoretical models supporting the theoretical framework under development; (d) scripting the theoretical framework into a figure or sets of statements as a series of hypotheses, if/then logic statements, or a visual model; (e) content and face validation of the theoretical framework; and (f) revising the theoretical framework. In our example, we combined the "diffusion of innovation theory" and the "health belief model" to develop our framework. Using the Cardiovascular Health Awareness Program as the model, we demonstrated a stepwise process of developing a theoretical framework. The challenges encountered are described, and an overview of the strategies employed to overcome these challenges is presented. PMID:23564493

  8. Modelling the Impact of Human Actors on Groundwater Resources under Conditions of Climate Change

    Barthel, R.; Reichenau, T. G.; Krimly, T.; Dabbert, S.; Schneider, K.; Mauser, W.; Hennicker, R.

    2012-12-01

    Water resources, activities of human actors and climate change are related in many different and complex ways because of the existence of and strong interactions between various influencing factors, including those that are natural-environmental and socio-economic. The GLOWA-Danube research cooperation has developed the integrated simulation system DANUBIA to simulate water-related influences of global change in different spatial and temporal contexts. DANUBIA is a modular system comprised of 17 dynamically-coupled, process-based model components and a framework which controls the interaction of these components with respect to space and time. This contribution describes approaches and capabilities of DANUBIA with regard to the simulation of global change effects on human decisions in water related fields with a focus on agriculture and groundwater. In agriculture, market prices and legislation can be equally or even more important than water availability in determining farmers' behavior and thus in determining the agricultural impact on water resources quantity and quality. The DANUBIA simulation framework and the associated DeepActor-framework for simulation of decision-making by human actors are presented together with the model components which are most relevant to the interactions between agriculture and groundwater. The approach for developing combination climate and socio-economic scenarios is explained. Exemplary scenario results are shown for the Upper Danube Catchment in Southern Germany. References Barthel, R., Janisch, S., N. Schwarz, A. Trifkovic, D. Nickel, C. Schulz, W. Mauser (2008): An integrated modelling framework for simulating regional-scale actor responses to global change in the water domain. Environmental Modelling and Software, 23, 1095-1121 (doi:10.1016/j.envsoft.2008.02.004) Barthel, R., Reichenau T., Krimly, T., Dabbert, S., Schneider, K., Mauser, W. (2012) Integrated modeling of climate change impacts on agriculture and groundwater

  9. A Modeling Framework for Gossip-based Information Spread

    Bakhshi, Rena; Fokkink, Wan; van Steen, Maarten

    2011-01-01

    We present an analytical framework for gossip protocols based on the pairwise information exchange between interacting nodes. This framework allows for studying the impact of protocol parameters on the performance of the protocol. Previously, gossip-based information dissemination protocols have been analyzed under the assumption of perfect, lossless communication channels. We extend our framework for the analysis of networks with lossy channels. We show how the presence of message loss, coupled with specific topology configurations,impacts the expected behavior of the protocol. We validate the obtained models against simulations for two protocols.

  10. A layered framework for pattern-based ontology evolution

    Javed, Muhammad; M. Abgaz, Yalemisew; Pahl, Claus

    2011-01-01

    The challenge of ontology-driven modelling of information components is well known in both academia and industry. In this paper, we present a novel approach to deal with customisation and abstraction of ontology-based model evolution. As a result of an empirical study, we identify a layered change operator framework based on the granularity, domain-specificity and abstraction of changes. The implementation of the operator framework is supported through layered change logs. Layered change...

  11. Sustainable development based energy policy making frameworks, a critical review

    This paper, in the first step, presents an overview of the origination and formulation of sustainable development (SD) concept and the related policy making frameworks. The frameworks include Pressure–State–Response (PSR), Driving Force–State–Response (DSR), Driving Force–Pressure–State–Impact–Response (DPSIR), Driving Force–Pressure–State–Effect–Action (DPSEA) and Driving Force-Pressure-State-Exposure-Effect-Action (DPSEEA). In this regard, 40 case studies using the reviewed frameworks reported during 1994–2011 are surveyed. Then, their application area and application intensity are investigated. It is concluded that PSR, and DPSEA and DPSEEA have the higher and lower application intensities, respectively. Moreover, using Analytical Hierarchy Process (AHP) with a set of criteria, it is shown that PSR and DPSIR have the highest and lowest priorities. Finally, the shortcomings of frameworks applications are discussed. The paper is helpful in selecting appropriate policy making frameworks and presents some hints for future research in the area for developing more comprehensive models especially for sustainable electric energy policy making. - Highlights: ► The origination and formulation of sustainable development (SD) concept is reviewed. ► SD based frameworks (PSR, DSR, DPSIR, DPSEA and DPSEEA) are also reviewed. ► Then, the frameworks application area and intensity in recent years are investigated. ► Finally, the SD concept and the SD based frameworks are criticized. ► It will be helpful for developing more comprehensive energy policy making models.

  12. A Logical Framework for Knowledge Base Maintenance

    李未

    1995-01-01

    The maintenance sequences of a knowledge base and their limits are introduced.Some concepts used in knowledge base maintenance,such as new laws,user's rejections,and reconstructions of a knowledge base are defined;the related theorems are proved.A procedure is defined using transition systems;it generates maintenance sequences for a given user's model and a knowledge base.It is proved that all sequences produced by the procedure are convergent,and their limit is the set of true sentences of the model.Some computational aspects of reconstructions are studied.An R-calculus is given to deduce a reconstruction when a knowledge base meets a user's rejection.The work is compared with AGM's theory of belief revision.

  13. Aggregated Computational Toxicology Resource (ACTOR)

    U.S. Environmental Protection Agency — The Aggregated Computational Toxicology Resource (ACTOR) is a database on environmental chemicals that is searchable by chemical name and other identifiers, and by...

  14. International Political Actorness of the European Union: Evaluation Criteria

    GNATYUK N.N.

    2014-06-01

    Full Text Available The European Union is a completely new international entity which is hard to evaluate using traditional criteria of political actorness. Its active international presence stimulates the modeling of international actor features beyond the scope of “state-international organization” scheme. The concept of international actorness serves as a starting point for the development of appropriate analytical model. Unlike the traditional state-centered approaches which define an international actor through its affiliation witch the international system, this concept operates at the internal level of international entity and at the international structure level. Furthermore, both of these levels are treated as ontologically neutral and mutually constitutive. This basic theoretical scheme is used for elaboration of evaluation criteria of political actorness. The proposed system of criteria is based on drawing, synthesizing and developing the main writings on “new international actors” since the times of classic work by Carol A. Cosgrove and Kenneth J. Twitchett. The key elements of actorness assessed in this article include defining of capacity to act on the global scene as well as the acceptance by other actors and by international system as a whole. At the internal level, the EU’s actor capacity is measured by assessing its core elements ranging from core aspects, such as autonomy, authority, actor capability, coherence and cohesion to identity aspects. On the external level, the decisive criteria are recognition and acceptance by others which reflect expectations and perceptions of the EU. The proposed approach of evaluating the international actorness enables us to consider the political activity of the EU on the basis of coordinated system of interaction between the variables of international and domestic levels of the analysis. Furthermore, this contributes to the development of cumulative, coherent, and comprehensive theory of international

  15. PLATYPUS : A STEP-based Integration Framework

    Plantec, Alain; Ribaud, Vincent

    2006-01-01

    STEP is an ISO standard (ISO-10303) for the computer-interpretable representation and exchange of product data. Parts of STEP standardize conceptual structures and usage of information in generic or specific domains. The standardization process of these constructs is an approach which can be applied to a data-based integration. Platypus is a STEP-based meta-environment. From the data integration point of view, the STEP technology is primarily used for management. A key point is the automatic ...

  16. Framework for Supporting Web-Based Collaborative Applications

    Dai, Wei

    The article proposes an intelligent framework for supporting Web-based applications. The framework focuses on innovative use of existing resources and technologies in the form of services and takes the leverage of theoretical foundation of services science and the research from services computing. The main focus of the framework is to deliver benefits to users with various roles such as service requesters, service providers, and business owners to maximize their productivity when engaging with each other via the Web. The article opens up with research motivations and questions, analyses the existing state of research in the field, and describes the approach in implementing the proposed framework. Finally, an e-health application is discussed to evaluate the effectiveness of the framework where participants such as general practitioners (GPs), patients, and health-care workers collaborate via the Web.

  17. A Framework for a WAP-Based Course Registration System

    AL-Bastaki, Yousif; Al-Ajeeli, Abid

    2005-01-01

    This paper describes a WAP-based course registration system designed and implemented to facilitating the process of students' registration at Bahrain University. The framework will support many opportunities for applying WAP based technology to many services such as wireless commerce, cashless payment... and location-based services. The paper…

  18. A Framework for Web-Based Mechanical Design and Analysis

    Chiaming; Yen; Wujeng; Li

    2002-01-01

    In this paper, a Web-based Mechanical Design and A na lysis Framework (WMDAF) is proposed. This WMADF allows designers to develop web -based computer aided programs in a systematic way during the collaborative mec hanical system design and analysis process. This system is based on an emerg ing web-based Content Management System (CMS) called eXtended Object Oriented P ortal System (XOOPS). Due to the Open Source Status of the XOOPS CMS, programs d eveloped with this framework can be further customized to ...

  19. IDEF method-based simulation model design and development framework

    Ki-Young Jeong

    2009-09-01

    Full Text Available The purpose of this study is to provide an IDEF method-based integrated framework for a business process simulation model to reduce the model development time by increasing the communication and knowledge reusability during a simulation project. In this framework, simulation requirements are collected by a function modeling method (IDEF0 and a process modeling method (IDEF3. Based on these requirements, a common data model is constructed using the IDEF1X method. From this reusable data model, multiple simulation models are automatically generated using a database-driven simulation model development approach. The framework is claimed to help both requirement collection and experimentation phases during a simulation project by improving system knowledge, model reusability, and maintainability through the systematic use of three descriptive IDEF methods and the features of the relational database technologies. A complex semiconductor fabrication case study was used as a testbed to evaluate and illustrate the concepts and the framework. Two different simulation software products were used to develop and control the semiconductor model from the same knowledge base. The case study empirically showed that this framework could help improve the simulation project processes by using IDEF-based descriptive models and the relational database technology. Authors also concluded that this framework could be easily applied to other analytical model generation by separating the logic from the data.

  20. AN HMM BASED ANALYSIS FRAMEWORK FOR SEMANTIC VIDEO EVENTS

    You Junyong; Liu Guizhong; Zhang Yaxin

    2007-01-01

    Semantic video analysis plays an important role in the field of machine intelligence and pattern recognition. In this paper, based on the Hidden Markov Model (HMM), a semantic recognition framework on compressed videos is proposed to analyze the video events according to six low-level features. After the detailed analysis of video events, the pattern of global motion and five features in foreground--the principal parts of videos, are employed as the observations of the Hidden Markov Model to classify events in videos. The applications of the proposed framework in some video event detections demonstrate the promising success of the proposed framework on semantic video analysis.

  1. Automation Framework of Browser Based Testing Tool Watir

    Amit Puri

    2012-01-01

    This paper presents the automation framework of Browser based testing tool Watir (web application testing in `Ruby). The main advantage of a framework is the low cost for maintenance. If there is change to any test case then only the test case file needs to be updated and the Driver Script and Start-up script will remain the same. So, there is no need to update the scripts in case of changes to the application. Choosing the right framework helps in maintaining lower costs. There are several f...

  2. CORECLUSTER: A Degeneracy Based Graph Clustering Framework

    Giatsidis, Christos; Malliaros, Fragkiskos; Thilikos, Dimitrios M.; Vazirgiannis, Michalis

    2014-01-01

    Graph clustering or community detection constitutes an important task forinvestigating the internal structure of graphs, with a plethora of applications in several domains. Traditional tools for graph clustering, such asspectral methods, typically suffer from high time and space complexity. In thisarticle, we present \\textsc{CoreCluster}, an efficient graph clusteringframework based on the concept of graph degeneracy, that can be used along withany known graph clustering algorithm. Our approa...

  3. A cooperative agent-based security framework

    Cunha, Carlos R.; Gomes, João Pedro; Morais, Elisabete Paulo

    2013-01-01

    The actual economic paradigm is based on a strongly cooperative model that tries to support a more competitive and global organizations response. With cooperation comes an intrinsic need - interconnection and interoperability of information systems among business partners. This represents, in many areas, a huge organizational challenge, being the field of information, and communication security one emerging key issue and a natural enabler for cooperative behavior and to the proper establishme...

  4. An Ontology-Based Framework for Modeling User Behavior

    Razmerita, Liana

    2011-01-01

    This paper focuses on the role of user modeling and semantically enhanced representations for personalization. This paper presents a generic Ontology-based User Modeling framework (OntobUMf), its components, and its associated user modeling processes. This framework models the behavior of the users...... characteristics of the users interacting with the system. Concrete examples of how OntobUMf is used in the context of a Knowledge Management (KM) System are provided. This paper discusses some of the implications of ontology-based user modeling for semantically enhanced KM and, in particular, for personal KM. The...... results of this research may contribute to the development of other frameworks for modeling user behavior, other semantically enhanced user modeling frameworks, or other semantically enhanced information systems....

  5. Multiple input support in a model-based interaction framework

    Chatty, Stéphane; Lemort, Alexandre; Valès, Stéphane

    2007-01-01

    Developing for tabletops puts special requirements on interface programming frameworks: managing parallel input, device discovery, device equivalence, and describing combined interactions. We analyse these issues and describe the solutions that were used in IntuiKit, a model- based framework aimed at making the design and development of post-WIMP user interfaces more accessible. Some solutions are simple consequences of the support of multi- modality, while others are more specific to multipl...

  6. Improving scalable video adaptation in a knowledge-based framework

    Lopez Hernandez, Fernando; Nur, Gokce; Dogan, Safak; Arachchi, Hemantha; Mrak, M.; Martinez, Jose Maria; García Santos, Narciso; Kondoz, Ahmet

    2010-01-01

    In a knowledge-based content adaptation framework, video adaptation can be performed in a series of steps, named conversions. The high-level decision phase in such a framework occasionally encounters several feasible parameter values of a specific conversion. This paper proposes to transfer further decisions to a low-level phase that decides which parameters maximise the quality of the adaptation. Particularly when more than one solution are available, an innovative quality measure is used fo...

  7. Context Awareness Framework Based on Contextual Graph

    Van Nguyen, Tam; Nguyen, Huy; Choi, Deokjai

    2010-01-01

    Nowadays computing becomes increasingly mobile and pervasive. One of the important steps in pervasive computing is context-awareness. Context-aware pervasive systems rely on information about the context and user preferences to adapt their behavior. However, context-aware applications do not always behave as user's desire, and can cause users to feel dissatisfied with unexpected actions. To solve these problems, context-aware systems must provide mechanisms to adapt automatically when the context changes significantly. The interesting characteristic of context is its own behaviors which depend on various aspects of the surrounding contexts. This paper uses contextual graphs to solve the problem "the mutual relationships among the contexts". We describe the most relevant work in this area, as well as ongoing research on developing context-aware system for ubiquitous computing based on contextual graph. The usage of contextual graph in context-awareness is expected to make it effective for developers to develop...

  8. Pilot based frameworks for Weather Research Forecasting

    Ganapathi, Dinesh Prasanth

    The Weather Research Forecasting (WRF) domain consists of complex workflows that demand the use of Distributed Computing Infrastructure (DCI). Weather forecasting requires that weather researchers use different set of initial conditions and one or a combination of physics models on the same set of input data. For these type of simulations an ensemble based computing approach becomes imperative. Most DCIs have local job-schedulers that have no smart way of dealing with the execution of an ensemble type of computational problem as the job-schedulers are built to cater to the bare essentials of resource allocation. This means the weather scientists have to submit multiple jobs to the job-scheduler. In this dissertation we use Pilot-Job based tools to decouple work-load submission and resource allocation therefore streamlining the complex workflows in Weather Research and Forecasting domain and reduce their overall time to completion. We also achieve location independent job execution, data movement, placement and processing. Next, we create the necessary enablers to run an ensemble of tasks bearing the capability to run on multiple heterogeneous distributed computing resources there by creating the opportunity to minimize the overall time consumed in running the models. Our experiments show that the tools developed exhibit very good, strong and weak scaling characteristics. These results bear the potential to change the way weather researchers are submitting traditional WRF jobs to the DCIs by giving them a powerful weapon in their arsenal that can exploit the combined power of various heterogeneous DCIs that could otherwise be difficult to harness owing to interoperability issues.

  9. You're a What? Voice Actor

    Liming, Drew

    2009-01-01

    This article talks about voice actors and features Tony Oliver, a professional voice actor. Voice actors help to bring one's favorite cartoon and video game characters to life. They also do voice-overs for radio and television commercials and movie trailers. These actors use the sound of their voice to sell a character's emotions--or an advertised…

  10. Actors in land and building cadastre procedures

    Rakovec, Jana

    2012-01-01

    In this graduation thesis I discuss the role of actors in land and building cadastre procedures. Individual surveying services are presented, as well as the role of actors in these individual surveying services. Individual actors are described in great detail, namely with referring to rules and regulations on the basis of which the actors are entering the land and building cadastre procedures. Further on, I offer a description of various manners on how to gain information on actors and also t...

  11. FRAMEWORK-BASED DATA REQUIREMENTS FOR IT TOP MANAGEMENT

    Virpi Hotti

    2014-09-01

    Full Text Available There are several challenges on the adoptions of the frameworks (e.g., standards. If the main target is semantic interoperability, then data should be taken into consideration. The main aim of this paper is to identify some mechanisms that take closer to the semantic interoperability. Therefore, the framework-based lessons for top management are based on the asset management standard (ISO 55001:2014 where data are one type of assets and enterprise architecture metamodel (TOGAF content metamodel. The results establish that none of the asset management requirements for top management mentions data and the attributes of the data entity do not support the semantics interoperability.

  12. An Abstract Framework for Argumentation-based Negotiation

    Amgoud, Leila; Dimopoulos, Yannis; Moraïtïs, Pavlos

    2007-01-01

    This paper proposes an abstract framework for argumentation-based negotiation, in which the role of argumentation is formally analyzed. The framework makes it possible to study the outcomes of an argumentation-based negotiation. It shows what an agreement is, how it is related to the theories of the agents, when it is possible, and how this can be attained by the negotiating agents in this case. It defines also the notion of concession, and shows in which situation an agent will make one, as ...

  13. A Convergent Online Single Time Scale Actor Critic Algorithm

    Di Castro, D.; Meir, R.

    2009-01-01

    Actor-Critic based approaches were among the first to address reinforcement learning in a general setting. Recently, these algorithms have gained renewed interest due to their generality, good convergence properties, and possible biological relevance. In this paper, we introduce an online temporal difference based actor-critic algorithm which is proved to converge to a neighborhood of a local maximum of the average reward. Linear function approximation is used by the critic in order estimate ...

  14. A Scalable Policy and SNMP Based Network Management Framework

    LIU Su-ping; DING Yong-sheng

    2009-01-01

    Traditional SNMP-based network management can not deal with the task of managing large-scaled distributed network,while policy-based management is one of the effective solutions in network and distributed systems management. However,cross-vendor hardware compatibility is one of the limitations in policy-based management. Devices existing in current network mostly support SNMP rather than Common Open Policy Service (COPS) protocol. By analyzing traditional network management and policy-based network management, a scalable network management framework is proposed. It is combined with Internet Engineering Task Force (IETF) framework for policybased management and SNMP-based network management. By interpreting and translating policy decision to SNMP message,policy can be executed in traditional SNMP-based device.

  15. Integrated evaluation framework. Based on the logical framework approach for project cycle management

    This Integrated Evaluation Framework (IEF) was developed by TC Evaluation with the aim of presenting in a comprehensive manner the logic of thinking used when evaluating projects and programmes. Thus, in the first place, the intended audience for this report are evaluation officers, so that when applying the evaluation procedures and check lists, data can be organized following a systematic and logical scheme and conclusions can be derived ''objectively''. The value of such a framework for reporting on performance and in providing a quality reference for disbursements represents one of its major advantages. However, when developing and applying the IEF, it was realized that a Logical Framework Approach (LFA), like the one upon which the IEF is based, needs to be followed throughout the project life cycle, from the Country Programme Framework planning stage, through project design and implementation. Then, the helpful consequences flow into project design quality and smooth implementation. It is only in such an environment that meaningful and consistent evaluation can take place. Therefore the main audience for this report are Agency staff involved in planning, designing and implementing TC projects as well as their counterparts in Member States. In this understanding, the IEF was subjected to review by a consultants meeting, which included both external consultants and Agency staff. This Consultants Review Meeting encouraged the Secretariat to further adopt the LFA into the TC management process

  16. A generic testing framework for agent-based simulation models

    Gürcan, Önder; Dikenelli, Oguz; Bernon, Carole

    2013-01-01

    International audience Agent-based modelling and simulation (ABMS) had an increasing attention during the last decade. However, the weak validation and verification of agent-based simulation models makes ABMS hard to trust. There is no comprehensive tool set for verification and validation of agent-based simulation models, which demonstrates that inaccuracies exist and/or reveals the existing errors in the model. Moreover, on the practical side, many ABMS frameworks are in use. In this sen...

  17. A framework for disseminating evidence-based health promotion practices.

    Harris, Jeffrey R; Cheadle, Allen; Hannon, Peggy A; Forehand, Mark; Lichiello, Patricia; Mahoney, Eustacia; Snyder, Susan; Yarrow, Judith

    2012-01-01

    Wider adoption of evidence-based, health promotion practices depends on developing and testing effective dissemination approaches. To assist in developing these approaches, we created a practical framework drawn from the literature on dissemination and our experiences disseminating evidence-based practices. The main elements of our framework are 1) a close partnership between researchers and a disseminating organization that takes ownership of the dissemination process and 2) use of social marketing principles to work closely with potential user organizations. We present 2 examples illustrating the framework: EnhanceFitness, for physical activity among older adults, and American Cancer Society Workplace Solutions, for chronic disease prevention among workers. We also discuss 7 practical roles that researchers play in dissemination and related research: sorting through the evidence, conducting formative research, assessing readiness of user organizations, balancing fidelity and reinvention, monitoring and evaluating, influencing the outer context, and testing dissemination approaches. PMID:22172189

  18. Criteria-Based Framework for Software Product management

    Samer I. Mohamed

    2010-01-01

    Full Text Available Value-Based Software Engineering (VBSE becomes one of the most promising approaches for software product management [10]. It focuses on the critical role by which stakeholders and business core values affect decision making which in turn influence the product success. This paper illustrates the Criteria-Based approach for software product management through a computer based software framework. The framework can select the best candidate requirements for each release based on the stakeholders? input values for multiple criteria associated with each requirement. These criteria reflect the priority of each requirement not only in terms of perceived importance to the stakeholder and anticipated implementation cost criteria [18] but also through technical risk, relative impact and market-related aspects criteria. The framework has the capability to balance between the different stakeholders? preferences based on the stakeholder?s weight provided by the product manager [35]. By this means the introduced framework will enable the product manager to overcome many challenges throughout the product life cycle by providing him with the different features that make the decision making process much easier and finally yields to product success [16].

  19. Optimizing medical data quality based on multiagent web service framework.

    Wu, Ching-Seh; Khoury, Ibrahim; Shah, Hemant

    2012-07-01

    One of the most important issues in e-healthcare information systems is to optimize the medical data quality extracted from distributed and heterogeneous environments, which can extremely improve diagnostic and treatment decision making. This paper proposes a multiagent web service framework based on service-oriented architecture for the optimization of medical data quality in the e-healthcare information system. Based on the design of the multiagent web service framework, an evolutionary algorithm (EA) for the dynamic optimization of the medical data quality is proposed. The framework consists of two main components; first, an EA will be used to dynamically optimize the composition of medical processes into optimal task sequence according to specific quality attributes. Second, a multiagent framework will be proposed to discover, monitor, and report any inconstancy between the optimized task sequence and the actual medical records. To demonstrate the proposed framework, experimental results for a breast cancer case study are provided. Furthermore, to show the unique performance of our algorithm, a comparison with other works in the literature review will be presented. PMID:22614723

  20. The ETLMR MapReduce-Based ETL Framework

    Xiufeng, Liu; Thomsen, Christian; Pedersen, Torben Bach

    This paper presents ETLMR, a parallel Extract--Transform--Load (ETL) programming framework based on MapReduce. It has built-in support for high-level ETL-specific constructs including star schemas, snowflake schemas, and slowly changing dimensions (SCDs). ETLMR gives both high programming product...... productivity and high ETL scalability....

  1. Verification Based on Set-Abstraction Using the AIF Framework

    Mödersheim, Sebastian Alexander

    The AIF framework is a novel method for analyzing advanced security protocols, web services, and APIs, based a new abstract interpretation method. It consists of the specification language AIF and a translation/abstraction processes that produces a set of first-order Horn clauses. These can...

  2. Social movements and the construction of crisis actors

    Bourne, Angela; Chatzopoulou, Sevasti

    2015-01-01

    This article examines the Europeanization of social movements following the European sovereign debt crisis. It develops a theoretical framework to measure degrees of social movement Europeanization, incorporating targets, participants, and issue frame dimensions of mobilization. Europeanization of...... social movements occurs when they collaborate with similar movements in other countries, claim a European identity, invoke Europe-wide solidarity, contest authorities beyond the state and ascribe responsibility for solving the crisis to European Union (EU). By targeting EU authorities, social movements...... may contribute to the construction of the EU as a crisis actor and through deliberative processes define the roles and identities of such actors....

  3. An exergy-based framework for evaluating environmental impact

    The analysis framework introduced in this paper utilizes the recognition that exergy is a form of environmental free energy to provide a fundamental basis for valuing environmental interactions independent from their secondary impacts (e.g., global warming, photochemical smog). In order to extend exergy to analyze environmental interactions, modifications are required to the traditional representation of the environment and definition of the dead state used in technical exergy analysis. These are accomplished through a combination of logical extensions and use of non-equilibrium thermodynamic principles. The framework is comprised of two separate components: (1) environmental exergy analysis and (2) anthropocentric sensitivity analysis. Environmental exergy analysis is based on fundamental thermodynamic principles and analysis techniques. It extends the principles of technical exergy analysis to the environment in order to quantify the locations, magnitudes, and types of environmental impact-state change, alteration of natural transfers, and destruction change. Anthropocentric sensitivity analysis is based on the concepts of anthropocentric value and anthropocentric sensitivity. It enables the results of environmental exergy analysis to be interpreted for decision making, but at the expense of introducing some subjectivity into the framework. A key attribute of the framework is its ability to evaluate and compare the environmental performance of energy systems on a level playing field, regardless of the specifics of the systems-resources, by-products, sizes, time scales. -- Highlights: → The analysis framework introduced in this paper utilizes the recognition that exergy is a form of environmental free energy. → The framework is comprised of two separate components: (1) environmental exergy analysis and (2) anthropocentric sensitivity analysis. → Environmental exergy analysis extends the principles of technical exergy analysis to the environment in order to

  4. Self-Recovering Sensor-Actor Networks

    Kamali, Maryam; Petre, Luigia; Sere, Kaisa; 10.4204/EPTCS.30.4

    2010-01-01

    Wireless sensor-actor networks are a recent development of wireless networks where both ordinary sensor nodes and more sophisticated and powerful nodes, called actors, are present. In this paper we formalize a recently introduced algorithm that recovers failed actor communication links via the existing sensor infrastructure. We prove via refinement that the recovery is terminating in a finite number of steps and is distributed, thus self-performed by the actors. Most importantly, we prove that the recovery can be done at different levels, via different types of links, such as direct actor links or indirect links between the actors, in the latter case reusing the wireless infrastructure of sensors. This leads to identifying coordination classes, e.g., for delegating the most security sensitive coordination to the direct actor-actor coordination links, the least real-time constrained coordination to indirect links, and the safety critical coordination to both direct actor links and indirect sensor paths between...

  5. A Specification—Based Case Study from Test Class Framework

    LIULing; MIAOHuai-kou

    2001-01-01

    Testing is a standard method for verification of software performance.Producing efficinet and appropriate test case is an important aspect in testing.Specification-based testing presents a method to derive test data from software specification.Because of the precision and concision of specification.the test data derived from specification can test the software efficiently and entirely.This paper demonstrates a test class framework(TCF) on a file reading case study,specifiec using Z notation,This class framework defines test case sets,providing structure to the testing process.Flexbility is preserved so that many testing strategies can be used.

  6. Corporate Innovation Management Framework Based On Design Thinking

    Efeoglu, Arkin; Møller, Charles; Serie, Michel

    2014-01-01

    Management Framework where the characteristics of DT have most impact. The multi-national companies need to make the right preparation for an organizational mindset transformation. This is particularly interesting for companies which no longer want to make decisions based on limited understanding, just as...... governed. An Innovation Management Framework with principles of DT may avoid uncoordinated innovation capabilities. Ultimately innovation will not be an R&D topic anymore but become part for every employee’s job, irrespective of his or her position. In a previous paper DT characteristics were evaluated for...

  7. Minimal CDS motion-based connectivity recovery algorithm in wireless sensor and actor networks%基于最小连通支配集移动的WSANs连接恢复算法

    周杰; 姚雷; 杜景林

    2014-01-01

    In the mission-critical application of WSANs, one or multiple actors failure might lead to partitioning the inter-actor networks, and thus autonomous detection and connectivity restoration were highly desirable to maintain inter-actor connectivity. In this paper, we presented a minimal CDS motion-based connectivity recovery algorithm MCDSR which proactively identified actors whether were cut-vertices or not to the network connectivity , and designated minimal CDS backup nodes. If the nodes suddenly failed, the minimal block backup nodes moved and initiated a recovery process until the network was reconnected. Through simulated experiments, the results showed that the algorithm was more effective than present algorithms in terms of total number of relocated nodes, total travel distance,cover reduction.%在无线传感器与执行器网络( wireless sensor-actor networks,简称WSANs)关键任务应用中,单个或多个节点的失效可能造成内执行器节点产生网络分隔,自动检测和快速恢复来保持内执行器网络的连接性显得非常重要。论文提出了一种基于最小连通支配集移动的连接性恢复算法( minmal CDS motion-based connectivity recovery,简称 MCDSR),该算法主动探测影响网络连通的割点,并为其指定最小的连通支配集。一旦检测到节点失效,备份的支配集初始化恢复进程直到网络连接恢复。并通过实验与现有的恢复算法进行比较,发现MCDSR算法在移动的节点数目、总的移动距离、覆盖度减少等方面有更好性能。

  8. Knowledge-Based Framework: its specification and new related discussions

    Rodrigues, Douglas; Zaniolo, Rodrigo R.; Branco, Kalinka R. L. J. C.

    2015-09-01

    Unmanned Aerial Vehicle is a common application of critical embedded systems. The heterogeneity prevalent in these vehicles in terms of services for avionics is particularly relevant to the elaboration of multi-application missions. Besides, this heterogeneity in UAV services is often manifested in the form of characteristics such as reliability, security and performance. Different service implementations typically offer different guarantees in terms of these characteristics and in terms of associated costs. Particularly, we explore the notion of Service-Oriented Architecture (SOA) in the context of UAVs as safety-critical embedded systems for the composition of services to fulfil application-specified performance and dependability guarantees. So, we propose a framework for the deployment of these services and their variants. This framework is called Knowledge-Based Framework for Dynamically Changing Applications (KBF) and we specify its services module, discussing all the related issues.

  9. Earth science framework research based on the digital earth platform

    Liu, Rui; Kong, Xiangsheng; Miao, Fang; Ye, Chengming

    2007-06-01

    This paper explains the basic points of earth science research, reviews the notion of digital earth and suggests the basic concept of digital earth platform. Taking the theory of digital earth as an essence point and the framework of digital earth platform as a main clue, we mainly discuss: the basic theories of digital earth platform, a comparatively flawless model of earth science research framework based on the digital earth platform. The discussing issues involves the unified coordinate projecting, data updating, data transferring, data processing and analyzing and data displaying and a series of researches relating to energy sources, eco-system and disasters monitoring and forecasting with a combination of the suggested model of earth science research framework.

  10. Agent-Based Framework for Implementing and Deploying of SOA

    Alexandru Butoi; Gabriela Andreea Morar; Andreea Ilea

    2012-01-01

    In distributed organizational and business information systems’ contexts, Service-Oriented Architectures (SOA) provide standard-based and protocol independent solutions. Despite the advances in SOA models and design methodologies, the implementation and deployment of service choreographies are still made in an un-unified manner using the existing tools. We present a three-layered framework model based on deployment agents, which allows designing and implementing service choreographies in a un...

  11. Metal-Organic Frameworks Based on Main Group Metals

    Zhao, Xiang

    2011-01-01

    Metal-organic frameworks (MOFs) represent a large family of crystalline porous materials which have been extensively studied during the past decade. Due to their great porosity, precise and uniform pore size and functional organic linkers, they have found applications in the area of gas storage, separation, ion-exchange, catalysis and sensors. While previous studies in this area emphasize more on transition metal based MOFs, the main group metal based MOFs have been relatively less explored, ...

  12. Implementing condition based maintenance within an asset management framework

    Gusfre, David

    2010-01-01

     Condition Based Maintenance within an Asset Management Framework Description: The thesis shall describe how to implement Condition Based Maintenance within an Asset Management context. Asset Management (AM) is an area within Oil & Gas (O&G) Business with a large development potential in order to give companies added value in their operations. With the increased use of Integrated Operations concepts, a new approach for maintenance engineering is necessary. The asset performance is a resul...

  13. Sentiment analysis framework organization based on twitter corpus data

    Adela Beres

    2012-01-01

    Since its inception in 2006, Twitter has gathered millions of users. They post daily tweets about news, events or conversations. These tweets express their opinion about the topic they are discussing. Twitter is a large database of content that can be semantically exploited to extract opinions and based on these opinions to classify the users. This paper presents the organization of a sentiment analysis framework based on Twitter corpus data, including crawling tweets and opinion mining of th...

  14. 一种基于高斯过程的行动者评论家算法%Actor-critic algorithm based on Gaussian process

    陈仕超; 凌兴宏; 刘全; 伏玉琛; 陈桂兴

    2016-01-01

    The problem of how to balance the exploration and exploitation in the large or continuous state space is a hot topic in the field of reinforcement learning.With respect to this problem,this paper presented a novel actor-critic algorithm which combined with function approximation method and Gaussian process method.In the terms of actor,the algorithm used the tem-poral difference error to construct a mean square error function with respect to the policy parameters.In the terms of critic,the algorithm used Gaussian process to model the linear state-value function,and in conjunction with generative model,obtained the posteriori distribution of the parameter vector of the state-value function by Bayesian inference.The experimental results on the balance pole experiment shows that the algorithm has faster convergence rate and achieves the balance between exploration and exploitation in the large or continuous state space effectively.The algorithm has good convergence performance.%强化学习领域的一个研究难点是在大规模或连续空间中平衡探索和利用的问题。针对该问题,应用函数近似与高斯过程方法,提出新的行动者评论家(actor-critic,AC)算法。该算法在 actor 中使用时间差分误差构造关于策略参数的更新公式;在 critic 中利用高斯过程对线性带参值函数建模,结合生成模型,根据贝叶斯推理求解值函数的后验分布。将该算法应用于平衡杆实验中,实验结果表明,算法收敛速度较快,可以有效解决在大规模或连续空间中探索和利用的平衡问题,具有较好的性能。

  15. Performance measuring framework for grid market middleware

    Freitag, Fèlix; Chacín Martínez, Pablo; Chao, Isaac; Brunner, René; Navarro Moldes, Leandro; Ardáiz Villanueva, Óscar

    2007-01-01

    Current implementations of Grid infrastructures provide frameworks which aim at achieve on-demand computing. In such a scenario, contribution and use of resources will be governed by business models. The challenge is to provide multi-level performance information which enables the participation of the different actors in such a system. In this paper we describe the performance measuring framework developed for Grid Market Middleware, a middleware which supports economic-model based selection ...

  16. A Framework for Agile Development of Component-Based Applications

    Waignier, Guillaume; Meur, Anne-Françoise Le; Duchien, Laurence

    2010-01-01

    Agile development processes and component-based software architectures are two software engineering approaches that contribute to enable the rapid building and evolution of applications. Nevertheless, few approaches have proposed a framework to combine agile and component-based development, allowing an application to be tested throughout the entire development cycle. To address this problematic, we have built CALICO, a model-based framework that allows applications to be safely developed in an iterative and incremental manner. The CALICO approach relies on the synchronization of a model view, which specifies the application properties, and a runtime view, which contains the application in its execution context. Tests on the application specifications that require values only known at runtime, are automatically integrated by CALICO into the running application, and the captured needed values are reified at execution time to resume the tests and inform the architect of potential problems. Any modification at th...

  17. Cost management based security framework in mobile ad hoc networks

    2006-01-01

    Security issues are always difficult to deal with in mobile ad hoc networks. People seldom studied the costs of those security schemes respectively and for some security methods designed and adopted beforehand, their effects are often investigated one by one. In fact, when facing certain attacks, different methods would respond individually and result in waste of resources.Making use of the cost management idea, we analyze the costs of security measures in mobile ad hoc networks and introduce a security framework based on security mechanisms cost management. Under the framework, the network system's own tasks can be finished in time and the whole network's security costs can be decreased. We discuss the process of security costs computation at each mobile node and in certain nodes groups. To show how to use the proposed security framework in certain applications, we give examples of DoS attacks and costs computation of defense methods. The results showed that more secure environment can be achieved based on the security framework in mobile ad hoc networks.

  18. Efficient model learning methods for actor-critic control.

    Grondman, Ivo; Vaandrager, Maarten; Buşoniu, Lucian; Babuska, Robert; Schuitema, Erik

    2012-06-01

    We propose two new actor-critic algorithms for reinforcement learning. Both algorithms use local linear regression (LLR) to learn approximations of the functions involved. A crucial feature of the algorithms is that they also learn a process model, and this, in combination with LLR, provides an efficient policy update for faster learning. The first algorithm uses a novel model-based update rule for the actor parameters. The second algorithm does not use an explicit actor but learns a reference model which represents a desired behavior, from which desired control actions can be calculated using the inverse of the learned process model. The two novel methods and a standard actor-critic algorithm are applied to the pendulum swing-up problem, in which the novel methods achieve faster learning than the standard algorithm. PMID:22156998

  19. A Distributed Key Based Security Framework for Private Clouds

    Ali Shahbazi

    2013-10-01

    Full Text Available Cloud computing in its various forms continues to grow in popularity as organizations of all sizes seek to capitalize on the cloud’s scalability, externalization of infrastructure and administration and generally reduced application deployment costs. But while the attractiveness of these public cloud services is obvious, the ability to capitalize on these benefits is significantly limited for those organization requiring high levels of data security. It is often difficult if not impossible from a legal or regulatory perspective for government agencies or health services organizations for instance to use these cloud services given their many documented data security issues. As a middle ground between the benefits and security concerns of public clouds, hybrid clouds have emerged as an attractive alternative; limiting access, conceptually, to users within an organization or within a specific subset of users within an organization. Private clouds being significant options in hybrid clouds, however, are still susceptible to security vulnerabilities, a fact which points to the necessity of security frameworks capable of addressing these issues. In this paper we introduce the Treasure Island Security Framework (TISF, a conceptual security framework designed to specifically address the security needs of private clouds. We have based our framework on a Distributed Key and Sequentially Addressing Distributed file system (DKASA; itself borrowing heavily from the Google File System and Hadoop. Our approach utilizes a distributed key methodology combined with sequential chunk addressing and dynamic reconstruction of metadata to produce a more secure private cloud. The goal of this work is not to evaluate framework from an operational perspective but to instead provide the conceptual underpinning for the TISF. Experimental findings from our evaluation of the framework within a pilot project will be provided in a subsequent work.

  20. Context-Aware Usage-Based Grid Authorization Framework

    CUI Yongquan; HONG Fan; FU Cai

    2006-01-01

    Due to inherent heterogeneity, multi-domain characteristic and highly dynamic nature, authorization is a critical concern in grid computing. This paper proposes a general authorization and access control architecture, grid usage control (GUCON), for grid computing. It's based on the next generation access control mechanism usage control (UCON) model. The GUCON Framework dynamic grants and adapts permission to the subject based on a set of contextual information collected from the system environments; while retaining the authorization by evaluating access requests based on subject attributes, object attributes and requests. In general, GUCON model provides very flexible approaches to adapt the dynamically security request. GUCON model is being implemented in our experiment prototype.

  1. Data Warehouse Requirements Analysis Framework: Business-Object Based Approach

    Anirban Sarkar

    2012-01-01

    Full Text Available Detailed requirements analysis plays a key role towards the design of successful Data Warehouse (DW system. The requirements analysis specifications are used as the prime input for the construction of conceptual level multidimensional data model. This paper has proposed a Business Object based requirements analysis framework for DW system which is supported with abstraction mechanism and reuse capability. It also facilitate the stepwise mapping of requirements descriptions into high level design components of graph semantic based conceptual level object oriented multidimensional data model. The proposed framework starts with the identification of the analytical requirements using business process driven approach and finally refine the requirements in further detail to map into the conceptual level DW design model using either Demand-driven of Mixed-driven approach for DW requirements analysi

  2. Mobile Agent Based Framework for Integrating Digital Library System

    2005-01-01

    Few of the current approaches to achieve the integration of digital library system have considered the influence of network factors on quality of service for the integration system of digital libraries. For this reason, a mobile agent based framework for integrating digital library system is proposed. Based on this framework, a prototype system is implemented and the key technique for it are described. Compared with the current approaches, using mobile agent technique to achieve the integration of digital library system can not only avoid transmitting a lot of data on the network, lower the dependence on network bandwidth for the system, but also improve the quality of service for the integration system of digital libraries in intermitted or unreliable network connection settings.

  3. An Agent-based Framework for Speech Investigation

    Walsh, Michael; O'Hare, G.M.P.; Carson-Berndsen, Julie

    2005-01-01

    This paper presents a novel agent-based framework for investigating speech recognition which combines statistical data and explicit phonological knowledge in order to explore strategies aimed at augmenting the performance of automatic speech recognition (ASR) systems. This line of research is motivated by a desire to provide solutions to some of the more notable problems encountered, including in particular the problematic phenomena of coarticulation, underspecified input...

  4. A probabilistic, logic-based framework for automated ontology matching

    Nottelmann, Henrik; Straccia, Umberto

    2004-01-01

    We introduces oPLMap, a formal framework for automatically learning mapping rules between heterogeneous ontologies, a crucial step in integrating ontologies and their instances in the Semantic Web. This approach is based on Horn predicate logics and probability theory, which allows for dealing with uncertain mappings (for cases where there is no exact correspondence between classes), and can be easily extended towards complex ontology models. Different components are combined for finding suit...

  5. LOCAL TEXTURE DESCRIPTION FRAMEWORK FOR TEXTURE BASED FACE RECOGNITION

    R. Reena Rose

    2014-02-01

    Full Text Available Texture descriptors have an important role in recognizing face images. However, almost all the existing local texture descriptors use nearest neighbors to encode a texture pattern around a pixel. But in face images, most of the pixels have similar characteristics with that of its nearest neighbors because the skin covers large area in a face and the skin tone at neighboring regions are same. Therefore this paper presents a general framework called Local Texture Description Framework that uses only eight pixels which are at certain distance apart either circular or elliptical from the referenced pixel. Local texture description can be done using the foundation of any existing local texture descriptors. In this paper, the performance of the proposed framework is verified with three existing local texture descriptors Local Binary Pattern (LBP, Local Texture Pattern (LTP and Local Tetra Patterns (LTrPs for the five issues viz. facial expression, partial occlusion, illumination variation, pose variation and general recognition. Five benchmark databases JAFFE, Essex, Indian faces, AT&T and Georgia Tech are used for the experiments. Experimental results demonstrate that even with less number of patterns, the proposed framework could achieve higher recognition accuracy than that of their base models.

  6. Defining Smart City. A Conceptual Framework Based on Keyword Analysis

    Farnaz Mosannenzadeh

    2014-05-01

    Full Text Available “Smart city” is a concept that has been the subject of increasing attention in urban planning and governance during recent years. The first step to create Smart Cities is to understand its concept. However, a brief review of literature shows that the concept of Smart City is the subject of controversy. Thus, the main purpose of this paper is to provide a conceptual framework to define Smart City. To this aim, an extensive literature review was done. Then, a keyword analysis on literature was held against main research questions (why, what, who, when, where, how and based on three main domains involved in the policy decision making process and Smart City plan development: Academic, Industrial and Governmental. This resulted in a conceptual framework for Smart City. The result clarifies the definition of Smart City, while providing a framework to define Smart City’s each sub-system. Moreover, urban authorities can apply this framework in Smart City initiatives in order to recognize their main goals, main components, and key stakeholders.

  7. Privileged Emotion Managers: The Case of Actors

    Orzechowicz, David

    2008-01-01

    Theatre provides a unique set of conditions for the management of emotions. Drawing on participant observation from one repertory theater, three university productions, and interviews with stage actors, directors, and acting instructors, I conceptualize actors as privileged emotion managers. Actors access structural resources that enable their…

  8. EAFoC: Enterprise Architecture Framework Based on Commonality

    Jin-Woo Kim; Ju-Hum Kwon; Young-Gab Kim; Chee-Yang Song; Hyun-Seok Kim; Doo-Kwon Baik

    2006-01-01

    The recent rapid development in information systems (ISs) has resulted in a critical need for integration and interoperability between heterogeneous ISs in various domains, using specific commonalities. However, stovepipe systems have been caused due to inconsistencies in planning IS architecture among stakeholders. So far, there has been no research on an enterprise architecture framework (EAF) that can satisfy with the coefficient factors of system architecture (SA) and enterprise architecture (EA). This paper proposes a new EAF that can resolve the problems inherent in existing legacy EAFs and their features. EAFoC (Enterprise Architecture Framework based on Commonality) is based on commonality that can be satisfied as the coefficient factors in both SA and EA within a common information technology (IT) domain. Thus, it should be possible to integrate an established heterogeneous framework for each stakeholder's view. Consequently, the most important contribution of this paper is to establish the appropriate EAFoC for the development of consistent IS architecture, smooth communication among stakeholders, systematic integration management of diversified and complicated new IT technologies,interoperability among heterogeneous ISs, and reusability based on commonality with other platforms.

  9. Operationalizing social safeguards in REDD+: actors, interests and ideas

    “REDD+” is a mechanism created under the United Nations Framework Convention on Climate Change (UNFCCC) for Reducing {carbon} Emissions from Deforestation and Degradation and forest enhancement. In addition, REDD+ “safeguards” are intended to protect non-carbon forest values. While REDD+ countries are formally requested to provide information on safeguards, there is as yet no agreement on the relative priority of carbon versus non-carbon values, and the appropriate level of safeguard standardization. This, we argue, has allowed REDD+ to function as a “boundary object” spanning disparate priorities. Meanwhile, the contestation of these priorities has been displaced from intergovernmental processes to the various organizations involved in operationalizing REDD+ activities. This article applies a set of organizational, substantive and conceptual typologies to compare differences in the balance of actors, interests and ideas across these organizations. It finds that multi-lateral funding programs have drawn heavily on existing safeguards for international aid, while private certification schemes have specialized in different niche priorities at the project level. In regards to the substance of safeguard requirements, the involvement of donors and investors appears correlated with a stronger emphasis on carbon and risk mitigation while greater NGO involvement and the decoupling of safeguards design from REDD+ funding appear correlated with greater emphasis on social rights and benefits. These findings have several critical implications for future REDD+ activities. Firstly, the choice of organizations involved in defining, funding and verifying safeguard activities, and the balance of actors in their governing structures, are likely to influence the relative emphasis on non-carbon values. Secondly, a diversity of approaches to disbursing REDD+ incentives may be necessary to maintain widespread support for REDD+. Thirdly, it remains to be seen whether REDD

  10. Policy analysis of multi-actor systems

    Enserink, Bert; Kwakkel, Jan; Thissen, Wil; Koppenjan, Joop; Bots, Pieter

    2010-01-01

    Policy analysts love solving complex problems. Their favorite problems are not just technically complex but also characterized by the presence of many different social actors that hold conflicting interests, objectives, and perceptions and act strategically to get the best out of a problem situation. This book offers guidance for policy analysts who want to assess if and how their analysis could be of help, based on the premise that problem formulation is the cornerstone in addressing complex problems. This book positions policy analysis within the theories on processes of policy making, and f

  11. Fundamentals of sketch-based passwords a general framework

    Riggan, Benjamin S; Wang, Cliff

    2015-01-01

    This SpringerBrief explores graphical password systems and examines novel drawing-based methods in terms of security, usability, and human computer-interactions. It provides a systematic approach for recognizing, comparing, and matching sketch-based passwords in the context of modern computing systems. The book offers both a security and usability analysis of the accumulative framework used for incorporating handwriting biometrics and a human computer-interaction performance analysis. The chapters offer new perspectives and experimental results regarding model uniqueness, recognition tolerance

  12. Competitive advantage: an analytical framework based on entrepreneurship

    LIU Zhibiao

    2006-01-01

    This article observes and studies the role and effect of entrepreneurship within the theoretical framework of resource-based view(RBV).It advances competitive advantage theory based on entrepreneurship by proving the distinctiveness of entrepreneurship. Distinctive cognition competence of entrepreneurs provides them with personal specific assets,which determines both the competence to explore new business opportunities and the competence to integrate resources for risk activities.The characteristics of such intangible resource as entrepreneurship,such as its distinctiveness,limitedness of competition,and incomplete mobility of factors,are the most important sources of competitive advantage of enterprises in the strategic management theory of RBV.

  13. A VGI data integration framework based on linked data model

    Wan, Lin; Ren, Rongrong

    2015-12-01

    This paper aims at the geographic data integration and sharing method for multiple online VGI data sets. We propose a semantic-enabled framework for online VGI sources cooperative application environment to solve a target class of geospatial problems. Based on linked data technologies - which is one of core components of semantic web, we can construct the relationship link among geographic features distributed in diverse VGI platform by using linked data modeling methods, then deploy these semantic-enabled entities on the web, and eventually form an interconnected geographic data network to support geospatial information cooperative application across multiple VGI data sources. The mapping and transformation from VGI sources to RDF linked data model is presented to guarantee the unique data represent model among different online social geographic data sources. We propose a mixed strategy which combined spatial distance similarity and feature name attribute similarity as the measure standard to compare and match different geographic features in various VGI data sets. And our work focuses on how to apply Markov logic networks to achieve interlinks of the same linked data in different VGI-based linked data sets. In our method, the automatic generating method of co-reference object identification model according to geographic linked data is discussed in more detail. It finally built a huge geographic linked data network across loosely-coupled VGI web sites. The results of the experiment built on our framework and the evaluation of our method shows the framework is reasonable and practicable.

  14. A LCA Based Biofuel Supply Chain Analysis Framework

    刘喆轩; 邱彤; 陈丙珍

    2014-01-01

    This paper presents a life cycle assessment (LCA) based biofuel supply chain (SC) analysis framework which enables the study of economic, energy and environmental (3E) performances by using multi-objective opti-mization. The economic objective is measured by the total annual profit, the energy objective is measured by the average fossil energy (FE) inputs per MJ biofuel and the environmental objective is measured by greenhouse gas (GHG) emissions per MJ biofuel. A multi-objective linear fractional programming (MOLFP) model with multi-conversion pathways is formulated based on the framework and is solved by using theε-constraint method. The MOLFP prob-lem is turned into a mixed integer linear programming (MILP) problem by setting up the total annual profit as the optimization objective and the average FE inputs per MJ biofuel and GHG emissions per MJ biofuel as constraints. In the case study, this model is used to design an experimental biofuel supply chain in China. A set of the weekly Pareto optimal solutions is obtained. Each non-inferior solution indicates the optimal locations and the amount of biomass produced, locations and capacities of conversion factories, locations and amount of biofuel being supplied in final markets and the flow of mass through the supply chain network (SCN). As the model reveals trade-offs among 3E criteria, we think the framework can be a good support tool of decision for the design of biofuel SC.

  15. Indeterminate direction relation model based on fuzzy description framework

    2008-01-01

    The indetermination of direction relation is a hot topic for fuzzy GIS researchers. The existing models only study the effects of indetermination of spatial objects,but ignore the uncertainty of direction reference framework. In this paper,first a for-malized representation model of indeterminate spatial objects is designed based on quadruple (x,y,A,μ),then a fuzzy direction reference framework is constructed by revising the cone method,in which the partitions of direction tiles are smooth and continuous,and two neighboring sections are overlapped in the transitional zones with fuzzy method. Grounded on these,a fuzzy description model for indeterminate direction relation is proposed in which the uncertainty of all three parts (source object,reference object and reference frame) is taken into account simultaneously. In the end,case studies are implemented to test the rationality and validity of the model.

  16. A framework for interoperability of BPEL-based workflows

    Li Xitong; Fan Yushun; Huang Shuangxi

    2008-01-01

    With the prevalence of service-oriented architecture (SOA), web services have become the dominating technology to construct workflow systems. As a workflow is the composition of a series of interrelated web services which realize its activities, the interoperability of workflows can be treated as the composition of web services. To address it, a framework for interoperability of business process execution language (BPEL)-based workflows is presented, which can perform three phases, that is, transformation, conformance test and execution. The core components of the framework are proposed, especially how these components promote interoperability. In particular, dynamic binding and re-composition of workflows in terms of web service testing are presented. Besides, an example of business-to-business (B2B) collaboration is provided to illustrate how to perform composition and conformance test.

  17. Community-Based Rural Tourism: A Proposed Sustainability Framework

    Kayat Kalsom

    2014-01-01

    Full Text Available Many tourism projects run by community in the rural areas are labelled as Community-based Rural Tourism (CBRT, a type of a more ‘responsible’ tourism that contributes to sustainable development. However, a framework is needed to enable planners and managers to understand its criteria thus ensuring that the CBRTs fulfil the sustainability requirement. This paper presents findings from a literature review on previous writings in this topic. Findings from an analysis on the criteria of a sustainable CBRT product are discussed. It is found that in order for it to play a role in sustainable development, a CBRT product must focus on competitive management, resource conservation, and benefit creation to the community. The three elements need to be supported, in turn, by community involvement and commitment. As the proposed conceptual framework of sustainable CBRT product can be a basis for further research in CBRT, it offers producing theoretical and practical implications.

  18. Literature review of how Telecentres operate and have an impact on eInclusion. Exploratory study on explanations and theories of how Telecentres and other community-based e-Inclusion actors operate and have an impact on digital and social inclusion policy goals

    SEY Araba; Garrido, María; TABITHA Hart; Santana, Luis

    2012-01-01

    This report includes the results of the research project ‘Exploratory study on explanations and theories of how Telecentres and other community-based e-Inclusion actors operate and have an impact on digital and social inclusion policy goals’. This study was commissioned by IPTS to feed into a forthcoming 2-year research project: Measuring the impact of eInclusion actors on Digital Literacy, Skills and Inclusion goals (MIREIA). The literature review presented in this report was designed t...

  19. Actor bonds after relationship dissolution

    Skaates, Maria Anne

    2000-01-01

    Most of the presented papers at the 1st NoRD Workshop can be classified as belonging to the business marketing approach to relationship dissolution. Two papers were conceptual, and the remaining six were empirical studies. The first conceptual study by Skaates (2000) focuses on the nature of the ...... actor bonds that remain after a business relationship has ended. The study suggests that an interdisciplinary approach would provide a richer understanding of the phenomenon; this could be achieved by using e.g. Bourdieu's sociological concepts in dissolution research....

  20. Making Autonomies Matter: Sub-State Actor Accommodation in the Nordic Council and the Nordic Council of Ministers -- An Analysis of the Institutional Framework for Accommodating the Faroe Islands, Greenland and Åland within ‘Norden’

    Sarah Stephan

    2014-04-01

    Full Text Available Sovereign powers are not absolute but exercised in varying areas and to varying degrees by sub-state, state and supra-state entities. The upward dispersion of power to international organisations carries implications for the sub-state level, while sub-state governance poses demands as to the conduct of governance at the international level. It is well recognised that sub-state entities, such as federal states and autonomies, may have the (restricted capacity to enter into international relations. But what capacities do international organisations have to accommodate autonomies in their institutional frameworks? This paper shall present a case study of one such framework, namely Nordic co-operation and the accommodation of the Nordic autonomies, the Faroe Islands, Greenland and Åland, within its institutional framework. Within ‘Norden’, the position of autonomies has been scrutinised and adapted on several occasions, in the late 1960s, early 1980s and in the mid-2000s. The accommodation of the autonomies has been discussed in light of evident implications of statehood and international legal personality and the institutional arrangements eventually carved serve well to illustrate the challenges and opportunities international organisations face in the attempt to accommodate multi-level systems.

  1. tradicional: Conflictos y actores laborales

    Héctor Lucena

    2005-01-01

    Full Text Available Este artículo forma parte de una línea de investigación más general que se ocupa de analizar las transformaciones en las Relaciones de Trabajo. El presente documento centra su atención en los cambios que experimenta la Organización del Trabajo y como ellos repercuten en la conflictividad laboral. Se parte de reconocer que la relación capital-trabajo es de naturaleza conflictiva, pero que los mecanismos de convivencia entre las partes y todo el marco regulatorio, permiten y facilitan el desenvolvimiento y la convivencia productiva. Sin embargo, los cambios en la Organización del Trabajo que reducen la fuerza de trabajo y lesionan conquistas históricas de los trabajadores, estimulan el desarrollo de conflictos colectivos, los que materializan en tanto existan constituidos los actores laborales. En el proceso de investigación seguido en esta línea, se revisa la literatura pertinente, se analizan casos de la realidad laboral venezolana reciente vía hemeroteca y entrevistas, privilegiándose la huelga de Sidor en el 2004. Se concluye, destacando que los cambios que paulatinamente se emprenden desde la empresa para modificar la Organización del Trabajo, erosionan la capacidad de respuesta de los actores laborales representativos de los trabajadores.

  2. A Framework for Devanagari Script-based Captcha

    Yalamanchili, Sushma

    2011-01-01

    Human Interactive Proofs (HIPs) are automatic reverse Turing tests designed to distinguish between various groups of users. Completely Automatic Public Turing test to tell Computers and Humans Apart (CAPTCHA) is a HIP system that distinguish between humans and malicious computer programs. Many CAPTCHAs have been proposed in the literature that text-graphical based, audio-based, puzzle-based and mathematical questions-based. The design and implementation of CAPTCHAs fall in the realm of Artificial Intelligence. We aim to utilize CAPTCHAs as a tool to improve the security of Internet based applications. In this paper we present a framework for a text-based CAPTCHA based on Devanagari script which can exploit the difference in the reading proficiency between humans and computer programs. Our selection of Devanagari script-based CAPTCHA is based on the fact that it is used by a large number of Indian languages including Hindi which is the third most spoken language. There is potential for an exponential rise in t...

  3. A framework for grouping nanoparticles based on their measurable characteristics

    Sayes CM

    2013-09-01

    Full Text Available Christie M Sayes,1–3 P Alex Smith,2 Ivan V Ivanov3 1Center for Aerosol and Nanomaterials Engineering, RTI International, Research Triangle Park, NC, USA; 2Department of Biomedical Engineering, 3Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX, USA Background: There is a need to take a broader look at nanotoxicological studies. Eventually, the field will demand that some generalizations be made. To begin to address this issue, we posed a question: are metal colloids on the nanometer-size scale a homogeneous group? In general, most people can agree that the physicochemical properties of nanomaterials can be linked and related to their induced toxicological responses. Methods: The focus of this study was to determine how a set of selected physicochemical properties of five specific metal-based colloidal materials on the nanometer-size scale – silver, copper, nickel, iron, and zinc – could be used as nanodescriptors that facilitate the grouping of these metal-based colloids. Results: The example of the framework pipeline processing provided in this paper shows the utility of specific statistical and pattern recognition techniques in grouping nanoparticles based on experimental data about their physicochemical properties. Interestingly, the results of the analyses suggest that a seemingly homogeneous group of nanoparticles could be separated into sub-groups depending on interdependencies observed in their nanodescriptors. Conclusion: These particles represent an important category of nanomaterials that are currently mass produced. Each has been reputed to induce toxicological and/or cytotoxicological effects. Here, we propose an experimental methodology coupled with mathematical and statistical modeling that can serve as a prototype for a rigorous framework that aids in the ability to group nanomaterials together and to facilitate the subsequent analysis of trends in data based on quantitative

  4. A microeconomic-based framework for green cooperative communications

    Bonello, Nicholas

    2011-05-01

    The global concern on environmental issues is placing its mark on all sectors of the society, including of course, the wireless telecommunications industry. In this paper, we develop a microeconomic-based green radio framework in which a network operator shifts some of its responsibilities towards the intended destination to one of these inactive end-users with the specific intention of reducing the transmitted power of its source nodes and the incurred costs. Our results disclose up to 70% energy savings and up to 65% cost savings over the direct transmission benchmarker, when selecting from approximately 50 eligible relays in the scenario portrayed by the UMTS Rel. 99 standard. © 2011 IEEE.

  5. A framework of region-based dynamic image fusion

    WANG Zhong-hua; QIN Zheng; LIU Yu

    2007-01-01

    A new framework of region-based dynamic image fusion is proposed. First, the technique of target detection is applied to dynamic images (image sequences) to segment images into different targets and background regions. Then different fusion rules are employed in different regions so that the target information is preserved as much as possible. In addition, steerable non-separable wavelet frame transform is used in the process of multi-resolution analysis, so the system achieves favorable characters of orientation and invariant shift. Compared with other image fusion methods, experimental results showed that the proposed method has better capabilities of target recognition and preserves clear background information.

  6. Creating a collaboration based SCM framework. Case Digita Oy

    Kaija, Anssi

    2010-01-01

    The focus of this research is in the area of Supply Chain Collaboration (SCC). More precisely we studied the TeleCom Installation Services supply chain in the case company Digita Oy. Our goal was to identify the key elements to be considered when pursuing towards SCC; highlight the development areas in Supply Chain Management (SCM) in the case company; study how the SCC efforts can improve SCM in the case company; and construct a Collaboration Based SCM Framework for the case company. Overall...

  7. A component based software framework for vision measurement

    He, Lingsong; Bei, Lei

    2011-12-01

    In vision measurement applications, it is usually used to achieve an optimal result by combing different processing steps and algorithms .This paper proposes a component based software framework for vision measurement. First, commonly used processing algorithms of vision measurement are encapsulated into components that contained in a components library. The component which is designed to have its own properties also provides I/O interfaces for extern calls. Second, a software bus is proposed which can plug components and assemble them to form a vision measurement application. Besides components managing and data line linking, the software bus also provides service of message distribution, which is used to drive all the plugged components working properly. Third, a XML based script language is proposed to record the plugging and assembling process of a vision measurement application, which can be used to rebuild the vision measurement application later. At last, based on this framework, an application of landmark extraction that applied in camera calibration is introduced to show how it works.

  8. Between authority and media actor. The municipality as a news actor on the Internet

    Signe Bock Segaard

    2012-01-01

    Full Text Available

    The article illuminates how local authorities as news actors fill their websites with content. This is done through a study of how active the local authorities are as news actors on the Internet, what kinds of electronic news dissemination they do in practice, and to what degree they experience dilemmas in electronic news dissemination. The analytic point of departure is the tension between a journalistic ideal of news mediation relates to democratic values and a strategic ideal of communication related to branding. Empirically the analysis is based on data from several Danish and Norwegian municipalities which are considered as particularly active on the Internet. Finally the article discusses municipal news mediation on the Internet in the light of the municipality as a public authority as well as a market actor, a service provider, and as a democratic actor. The question is in what way municipal news dissemination on the Internet is a democratic gain. The article shows that the work with news dissemination on the Internet to some degree is characterized by professionalization, centralization, and bureaucratization. The democratic gain of municipal news dissemination is an empirical question and related to the criteria of news selection (in practice. Furthermore the article shows that some municipalities have a more strategic focus while others have a more journalistic focus but one focus does not rule out the other.

  9. Innovation in Multi-Actor Partnerships

    Christensen, David

    2014-01-01

    innovative sustainable technological solutions and business models through partnerships. In this paper, an action research study is presented involving the early stage development of a commercial venture addressing waste problems in Vietnam involving CARE International and Danish companies in the waste......Access2innovation is an initiative based in Denmark that develops and tests innovative new ways to build and implement strategic partnerships between civil society, business and academia. The objective is to meet perceived market opportunities and challenges in developing countries by developing...... to success lie in providing actors with a sound base for decision-making as well as active bi- and multilateral negotiations. As a novel experiment, the study shows that access2innovation can provide a platform conducive for partnership-based innovation for development....

  10. A Framework for Content-based Retrieval of EEG with Applications to Neuroscience and Beyond*

    Su, Kyungmin; Robbins, Kay A.

    2013-01-01

    This paper introduces a prototype framework for content-based EEG retrieval (CBER). Like content-based image retrieval, the proposed framework retrieves EEG segments similar to the query EEG segment in a large database.

  11. A Convergent Online Single Time Scale Actor Critic Algorithm

    Di Castro, D

    2009-01-01

    Actor-Critic based approaches were among the first to address reinforcement learning in a general setting. Recently, these algorithms have gained renewed interest due to their generality, good convergence properties, and possible biological relevance. In this paper, we introduce an online temporal difference based actor-critic algorithm which is proved to converge to a neighborhood of a local maximum of the average reward. Linear function approximation is used by the critic in order estimate the value function, and the temporal difference signal, which is passed from the critic to the actor. The main distinguishing feature of the present convergence proof is that both the actor and the critic operate on a similar time scale, while in most current convergence proofs they are required to have very different time scales in order to converge. Moreover, the same temporal difference signal is used to update the parameters of both the actor and the critic. A limitation of the proposed approach, compared to results a...

  12. An Automatic Learning-Based Framework for Robust Nucleus Segmentation.

    Xing, Fuyong; Xie, Yuanpu; Yang, Lin

    2016-02-01

    Computer-aided image analysis of histopathology specimens could potentially provide support for early detection and improved characterization of diseases such as brain tumor, pancreatic neuroendocrine tumor (NET), and breast cancer. Automated nucleus segmentation is a prerequisite for various quantitative analyses including automatic morphological feature computation. However, it remains to be a challenging problem due to the complex nature of histopathology images. In this paper, we propose a learning-based framework for robust and automatic nucleus segmentation with shape preservation. Given a nucleus image, it begins with a deep convolutional neural network (CNN) model to generate a probability map, on which an iterative region merging approach is performed for shape initializations. Next, a novel segmentation algorithm is exploited to separate individual nuclei combining a robust selection-based sparse shape model and a local repulsive deformable model. One of the significant benefits of the proposed framework is that it is applicable to different staining histopathology images. Due to the feature learning characteristic of the deep CNN and the high level shape prior modeling, the proposed method is general enough to perform well across multiple scenarios. We have tested the proposed algorithm on three large-scale pathology image datasets using a range of different tissue and stain preparations, and the comparative experiments with recent state of the arts demonstrate the superior performance of the proposed approach. PMID:26415167

  13. A Framework for an IP-Based DVB Transmission Network

    Ana Yun-Garcia

    2010-01-01

    Full Text Available One of the most important challenges for next generation all-IP networks is the convergence and interaction of wireless and wired networks in a smooth and efficient manner. This challenge will need to be faced if broadcast transmission networks are to converge with IP infrastructure. The 2nd generation of DVB standards supports the Generic Stream, allowing the direct transmission of IP-based content using the Generic Stream Encapsulation (GSE, in addition to the native Transport Stream (TS. However, the current signalling framework is based on MPEG-2 Tables that rely upon the TS. This paper examines the feasibility of providing a GSE signalling framework, eliminating the need for the TS. The requirements and potential benefits of this new approach are described. It reviews prospective methods that may be suitable for network discovery and selection and analyses different options for the transport and syntax of this signalling metadata. It is anticipated that the design of a GSE-only signalling system will enable DVB networks to function as a part of the Internet.

  14. SWSCF: A Semantic-based Web Service Composition Framework

    Jianqiang Hu

    2009-06-01

    Full Text Available Web service composition is gaining a considerable momentum as an approach to the effective integration of distributed, heterogeneous, and autonomous application. Current composed service processes are mostly generated in the syntactic level and in a manual way. The limitation of the approach is that it does not allow business to dynamic change partners and services. In order to avoid this disadvantage, it is critical to map complex business from abstract process to executable flows according to application domain semantics and dynamic business requirements. In this paper, we first present a semantic-based Web service composition framework called SWSCF based on both semantic process recommendation and semantic matchmaking. Then, we analyze some key technologies including: (1 Introducing hierarchical activity mechanism for dynamic decomposition of business requirements to find a suitable semantic process template; (2 Searching and selecting service chain to match a semantic activity template which is used to specify an abstract activity; (3 Devising heterogeneous message transforming mechanism to eliminate the incompatible message types during generating data flow of an executable process. Furthermore, by comparison with some service composition frameworks, we prove SWSCF to be more flexible and effective.

  15. A PROJECT REPORT ON EMERGENCY HEALTHCARE BASED MOBILE COMPUTING FRAMEWORK

    J. Prashanth

    2013-08-01

    Full Text Available With the rapid advancement in the society that too increase in the technology it directly deviating its interest towards the application related to the biomedical based scenario respectively. Here it is mainly concerned about the provision of the health based facility on the present domain respectively. Here the network is implemented by the help of wires based strategy oriented sensor networks where in this advancement in the system the attention moved towards the system based on the mobile health respectively. Here continuous monitoring of the data followed by the analysis of the healthcare is a primary assistance respectively. There are some of the problems oriented with present existing methods for working with the above medical based aspect respectively. The problems includes preservation privacy followed by the data security respectively. Here keeping all these criteria in the mind a new strategy is designed in which a particular framework is maintained where it gradually improves the performance of the system by the name of SPOC respectively. With these implementation in to the system where the resources of the smart phone contains energy based power consumption which plays a vital role for the effective implementation of the system respectively in terms of the accurate data process related to information of the health during emergency and the disclosure of the security based phenomena respectively. Here a method is designed for the control of the privacy based phenomena where the data transmission followed by the process oriented network based strategy and provides a complete assistance towards the system. Experimental analysis shows that the present method is accurate in terms of the process based scenario followed by the data analysis oriented strategy which is benefitted for the user and also the access based protection respectively.  

  16. Towards an intelligence based conceptual framework for e-maintenance

    Mouzoune, Abdessamad

    2012-01-01

    Since the time when concept of e-maintenance was introduced, most of the works insisted on the relevance of the underlying Information and Communication Technologies infrastructure. Through a review of current e-maintenance conceptual approaches and realizations, this paper aims to reconsider the predominance of ICT within e-maintenance projects and literature. The review brings to light the importance of intelligence as a fundamental dimension of e-maintenance that is to be led in a holistic predefined manner rather than isolated efforts within ICT driven approaches. As a contribution towards an intelligence based e-maintenance conceptual framework, a proposal is outlined in this paper to model e-maintenance system as an intelligent system. The proposed frame is based on CogAff architecture for intelligent agents. Within the proposed frame, more importance was reserved to the environment that the system is to be continuously aware of: Plant Environment, Internal and External Enterprise Environment and Human ...

  17. Unified HMM-based layout analysis framework and algorithm

    陈明; 丁晓青; 吴佑寿

    2003-01-01

    To manipulate the layout analysis problem for complex or irregular document image, a Unified HMM-based Layout Analysis Framework is presented in this paper. Based on the multi-resolution wavelet analysis results of the document image, we use HMM method in both inner-scale image model and trans-scale context model to classify the pixel region properties, such as text, picture or background. In each scale, a HMM direct segmentation method is used to get better inner-scale classification result. Then another HMM method is used to fuse the inner-scale result in each scale and then get better final seg- mentation result. The optimized algorithm uses a stop rule in the coarse to fine multi-scale segmentation process, so the speed is improved remarkably. Experiments prove the efficiency of proposed algorithm.

  18. A task-based analytical framework for ultrasonic beamformer comparison.

    Nguyen, Nghia Q; Prager, Richard W; Insana, Michael F

    2016-08-01

    A task-based approach is employed to develop an analytical framework for ultrasound beamformer design and evaluation. In this approach, a Bayesian ideal-observer provides an idealized starting point and a way to measure information loss in practical beamformer designs. Different approximations of this ideal strategy are shown to lead to popular beamformers in the literature, including the matched filter, minimum variance (MV), and Wiener filter (WF) beamformers. Analysis of the approximations indicates that the WF beamformer should outperform the MV approach, especially in low echo signal-to-noise conditions. The beamformers are applied to five typical tasks from the BIRADS lexicon. Their performance is evaluated based on ability to discriminate idealized malignant and benign features. The numerical results show the advantages of the WF over the MV technique in general; although performance varies predictably in some contrast-limited tasks because of the model modifications required for the MV algorithm to avoid ill-conditioning. PMID:27586736

  19. Web-based supplier relationship framework using agent systems

    Oboulhas Conrad Tsahat Onesime; XU Xiao-fei(徐晓飞); ZHAN De-chen(战德臣)

    2004-01-01

    In order to enable both manufacturers and suppliers to be profitable on today' s highly competitive markets, manufacturers and suppliers must be quick in selecting best partners establishing strategic relationship, and collaborating with each other so that they can satisfy the changing competitive manufacturing requirements. A web-based supplier relationships (SR) framework is therfore proposed using multi-agent systems and linear programming technique to reduce supply cost, increase flexibility and shorten response time. Web-based SR approach is an ideal platform for information exchange that helps buyers and suppliers to maintain the availability of materials in the right quantity, at the right place, and at the right time, and keep the customer-supplier relationship more transparent. A multi-agent system prototype was implemented by simulation, which shows the feasibility of the proposed architecture.

  20. A New Customer Segmentation Framework Based on Biclustering Analysis

    Xiaohui Hu

    2014-06-01

    Full Text Available The paper presents a novel approach for customer segmentation which is the basic issue for an effective CRM ( Customer Relationship Management . Firstly, the chi-square statistical analysis is applied to choose set of attributes and K-means algorithm is employed to quantize the value of each attribute. Then DBSCAN algorithm based on density is introduced to classify the customers into three groups (the first, the second and the third class. Finally biclustering based on improved Apriori algorithm is used in the three groups to obtain more detailed information. Experimental results on the dataset of an airline company show that the biclustering could segment the customers more accurately and meticulously. Compared with the traditional customer segmentation method, the framework described is more efficient on the dataset.

  1. A Smartphone Malware Detection Framework Based on Artificial Immunology

    Min Zhao

    2013-02-01

    Full Text Available With the sharp increase in the number of smartphones, the Android platform pose to becoming a market leader that makes the need for malware analysis on this platform an urgent issue. The current Artificial Immune-Based malware detection systems research focus on traditional computers that uses information from OS or network, but the smartphone software behavior has its own structure and semantics. Current research cannot detect malware in smartphone exactly and efficiently. To address these problems, in this paper, we capitalize on earlier approaches for dynamic analysis of application behavior as a means for detecting malware in the smartphone. An Artificial Immune-Based Smartphone Malware Detection Framework is brought forwards and a prototype system is implemented, the experiment result show that the system can obtain higher detection rate and decrease the false positive rate.

  2. Islamic actors' support for democracy and European integration: A case for power-seeking?

    Elbasani, Arolda; Saatçioğlu, Beken

    2011-01-01

    This paper investigates when and how Islamic political actors support democracy, and in particular, the EU's democratic criteria subsumed under membership conditionality. The research focuses on the main Islamic organizations in two Muslim-majority, EU applicant states, Turkey and Albania. The analysis suggests that Islamic actors endorsed democratic rules based on a rationalist logic, which combines interest-driven and ideational concerns. The weak Albanian actors have shown unconditional su...

  3. Partnerships as panacea for addressing global problems? On rationale, context, actors, impact and limitations

    Kolk, A.

    2014-01-01

    This chapter examines partnerships and their peculiarities, based on recent research from various disciplines, in the context of the large problems faced by (global) society. These problems are very complex, often cross national boundaries, and cannot easily be 'solved' by one single actor. Previous 'unilateral' attempts to address them have not been particularly successful, and there are limits to what a single actor can do. Cooperation also enables different actors to leverage their resourc...

  4. Base Map Framework Submission for Jackson County, AR, USA

    Federal Emergency Management Agency, Department of Homeland Security — FEMA Framework Basemap datasets comprise six of the seven FGDC themes of geospatial data that are used by most GIS applications (Note: the seventh framework theme,...

  5. Base Map Framework Submission for Randolph County, AR, USA

    Federal Emergency Management Agency, Department of Homeland Security — FEMA Framework Basemap datasets comprise six of the seven FGDC themes of geospatial data that are used by most GIS applications (Note: the seventh framework theme,...

  6. Base Map Framework Submission for Cass County, TX, USA

    Federal Emergency Management Agency, Department of Homeland Security — FEMA Framework Basemap datasets comprise six of the seven FGDC themes of geospatial data that are used by most GIS applications (Note: the seventh framework theme,...

  7. Base Map Framework Submission for Clay County, AR, USA

    Federal Emergency Management Agency, Department of Homeland Security — FEMA Framework Basemap datasets comprise six of the seven FGDC themes of geospatial data that are used by most GIS applications (Note: the seventh framework theme,...

  8. Base Map Framework Submission for Hunt County, TX, USA

    Federal Emergency Management Agency, Department of Homeland Security — FEMA Framework Basemap datasets comprise six of the seven FGDC themes of geospatial data that are used by most GIS applications (Note: the seventh framework theme,...

  9. A Digital Ecosystem-based Framework for Math Search Systems

    Mohammed Q. Shatnawi

    2012-03-01

    Full Text Available Text-based search engines fall short in retrieving structured information. When searching for x(y+z using those search engines, for example Google, it retrieves documents that contain xyz, x+y=z, (x+y+z =xyz or any other document that contain x, y, and/or z but not x(y+z as a standalone math expression. The reason behind this shortage; is that the text-based search engines ignore the structure of the mathematical expressions. Several issues are associated with designing and implementing math-based search systems. Those systems must be able to differentiate between a user query that contains a mathematical expression, and any other query that contains only a text term. A reliable indexing approach, along with a flexible and efficient representation technique are highly required. Eventually, text-based search systems must be able to process mathematical expressions that are well-structured and have properties that make them different from other forms of text. Here, in this context we take advantage from the concept of digital ecosystems to refine the text search process so it becomes applicable in searching for a mathematical expression. In this research, a framework that contains the basic building blocks of a math-based search system is designed

  10. An Actor-Critic architecture and simulator for goal-directed Brain-Machine Interfaces.

    Mahmoudi, Babak; Principe, Jose C; Sanchez, Justin C

    2009-01-01

    The Perception-Action Cycle (PAC) is a central component of goal-directed behavior because it links internal percepts with external outcomes in the environment. Using inspiration from the PAC, we are developing a Brain-Machine Interface control architecture that utilizes both motor commands and goal information directly from the brain to navigate to novel targets in an environment. An Actor-Critic algorithm was selected for decoding the neural motor commands because it is a PAC-based computational framework where the perception component is implemented in the critic structure and the actor is responsible for taking actions. We develop in this work a biologically realistic simulator to analyze the performance of the decoder in terms of convergence and target acquisition. Experience from the simulator will guide parameter selection and assist in understanding the architecture before animal experiments. By varying the signal to noise ratio of the neural input and error signal, we were able to demonstrate how the learning rate and initial conditions affect a motor control target selection task. In this framework, the naïve decoder was able to reach targets in the presence of noise in the error signal and neural motor command with 98% accuracy. PMID:19963795

  11. THE ANALYSIS OF ACTORS IN THE MAKING OF THE BUDGET REVENUE OF REGIONAL COST

    Muhammad Saad

    2015-07-01

    Full Text Available This article is the result of research on the analysis of the policy making of the budget revenues and shopping area of Makassar city fiscal year 2009. One part of this research use approach to the actors and the relationships between actors in policy making. Within the framework of the system of policy making of Budget income and Expenditure area (Budgets Makassar city, this research is the description of the analysis of the local government and actors People’s Representative Council District Makassar city as policy makers in making Grant Makassar city

  12. Transnational corporations as 'keystone actors' in marine ecosystems.

    Henrik Österblom

    Full Text Available Keystone species have a disproportionate influence on the structure and function of ecosystems. Here we analyze whether a keystone-like pattern can be observed in the relationship between transnational corporations and marine ecosystems globally. We show how thirteen corporations control 11-16% of the global marine catch (9-13 million tons and 19-40% of the largest and most valuable stocks, including species that play important roles in their respective ecosystem. They dominate all segments of seafood production, operate through an extensive global network of subsidiaries and are profoundly involved in fisheries and aquaculture decision-making. Based on our findings, we define these companies as keystone actors of the Anthropocene. The phenomenon of keystone actors represents an increasingly important feature of the human-dominated world. Sustainable leadership by keystone actors could result in cascading effects throughout the entire seafood industry and enable a critical transition towards improved management of marine living resources and ecosystems.

  13. LHCb: A CMake-based build and configuration framework

    Clemencic, M; Mato, P

    2011-01-01

    The LHCb experiment has been using the CMT build and configuration tool for its software since the first versions, mainly because of its multi-platform build support and its powerful configuration management functionality. Still, CMT has some limitations in terms of build performance and the increased complexity added to the tool to cope with new use cases added latterly. Therefore, we have been looking for a viable alternative to it and we have investigated the possibility of adopting the CMake tool, which does a very good job for building and is getting very popular in the HEP community. The result of this study is a CMake-based framework which provides most of the special configuration features available natively only in CMT, with the advantages of better performances, flexibility and portability.

  14. A community-based framework for aquatic ecosystem models

    Trolle, Didde; Hamilton, D. P.; Hipsey, M. R.; Bolding, Karsten; Bruggeman, J.; Mooij, W. M.; Janse, J. H.; Nielsen, A.; Jeppesen, E.; Elliott, J. A.; Makler-Pick, V.; Petzoldt, T.; Rinke, K.; Flindt, M. R.; Arhonditsis, G. B.; Gal, G.; Bjerring, R.; Tominaga, K.; Hoen, J.; Downing, A. S.; Marques, D. M.; Fragoso, C. R.; Sondergaard, M.; Hanson, P. C.

    2012-01-01

    , and (viii) avoid 're-inventing the wheel', thus accelerating improvements to aquatic ecosystem models. We intend to achieve this as a community that fosters interactions amongst ecologists and model developers. Further, we outline scientific topics recently articulated by the scientific community...... a literature survey, we document the growing importance of numerical aquatic ecosystem models while also noting the difficulties, up until now, of the aquatic scientific community to make significant advances in these models during the past two decades. Through a common forum for aquatic ecosystem...... modellers we aim to (i) advance collaboration within the aquatic ecosystem modelling community, (ii) enable increased use of models for research, policy and ecosystem-based management, (iii) facilitate a collective framework using common (standardised) code to ensure that model development is incremental...

  15. On long-only information-based portfolio diversification framework

    Santos, Raphael A.; Takada, Hellinton H.

    2014-12-01

    Using the concepts from information theory, it is possible to improve the traditional frameworks for long-only asset allocation. In modern portfolio theory, the investor has two basic procedures: the choice of a portfolio that maximizes its risk-adjusted excess return or the mixed allocation between the maximum Sharpe portfolio and the risk-free asset. In the literature, the first procedure was already addressed using information theory. One contribution of this paper is the consideration of the second procedure in the information theory context. The performance of these approaches was compared with three traditional asset allocation methodologies: the Markowitz's mean-variance, the resampled mean-variance and the equally weighted portfolio. Using simulated and real data, the information theory-based methodologies were verified to be more robust when dealing with the estimation errors.

  16. The high-level and long life radioactive wastes management in France: inquiry near the actors

    This document presents talks carried out near various actors of the radioactive wastes management in France. These talks have been realized in the framework of an inquiry aiming at supporting the developments of an economic sciences thesis, relative to the sustainable management of the nuclear wastes. This inquiry aimed to better determine the actors stakes, the controversies on the technical choices, but also the possible cooperation. (A.L.B.)

  17. Local actors facing environmental issues : Lessons from a bottom-up approach

    Maurel, Marie-Claude

    2009-01-01

    This chapter, analyzing the implementation of “local sustainable development” in the LEADER programs, questions the environmental contents of local communities development plans. To what extent the sustainability paradigm is shared by local actors and is connected to a genuine new awareness? In the first part, the paper develops the conceptual framework of the implementation of new public policies for local development in New Member States. In the second one, the way in which local actors hav...

  18. Widening the scope? How intermediary actors can shape energy consumption

    Maneschi, Davide

    2013-01-01

    , socio-technical systems, governance in the water sector and, although limitedly, in the explanation of aspects related to consumption and energy use. Building on the framework given by the review, the paper presents a case study to provide a real-life example of how intermediaries can favor the more......This paper deals with energy consumption in the residential sector and with the implementation of measures to reduce it. While most research dealing with energy consumption has targeted factors and drivers at the individual user level, more recent works have highlighted collective aspects of...... (energy) consumption, both to explain the resilience of consumption patterns and to identify leverage points for the reduction of energy use. One understudied aspect of this discussion is the way “intermediary” actors – those actors who are neither policy makers, nor users, nor energy providers...

  19. Generic XML-based framework for metadata portals

    Schindler, Uwe; Diepenbroek, Michael

    2008-12-01

    We present a generic and flexible framework for building geoscientific metadata portals independent of content standards for metadata and protocols. Data can be harvested with commonly used protocols (e.g., Open Archives Initiative Protocol for Metadata Harvesting) and metadata standards like DIF or ISO 19115. The new Java-based portal software supports any XML encoding and makes metadata searchable through Apache Lucene. Software administrators are free to define searchable fields independent of their type using XPath. In addition, by extending the full-text search engine (FTS) Apache Lucene, we have significantly improved queries for numerical and date/time ranges by supplying a new trie-based algorithm, thus, enabling high-performance space/time retrievals in FTS-based geo portals. The harvested metadata are stored in separate indexes, which makes it possible to combine these into different portals. The portal-specific Java API and web service interface is highly flexible and supports custom front-ends for users, provides automatic query completion (AJAX), and dynamic visualization with conventional mapping tools. The software has been made freely available through the open source concept.

  20. A Decision Support Framework For Science-Based, Multi-Stakeholder Deliberation: A Coral Reef Example

    We present a decision support framework for science-based assessment and multi-stakeholder deliberation. The framework consists of two parts: a DPSIR (Drivers-Pressures-States-Impacts-Responses) analysis to identify the important causal relationships among anthropogenic environ...

  1. A trait-based framework for stream algal communities.

    Lange, Katharina; Townsend, Colin Richard; Matthaei, Christoph David

    2016-01-01

    The use of trait-based approaches to detect effects of land use and climate change on terrestrial plant and aquatic phytoplankton communities is increasing, but such a framework is still needed for benthic stream algae. Here we present a conceptual framework of morphological, physiological, behavioural and life-history traits relating to resource acquisition and resistance to disturbance. We tested this approach by assessing the relationships between multiple anthropogenic stressors and algal traits at 43 stream sites. Our "natural experiment" was conducted along gradients of agricultural land-use intensity (0-95% of the catchment in high-producing pasture) and hydrological alteration (0-92% streamflow reduction resulting from water abstraction for irrigation) as well as related physicochemical variables (total nitrogen concentration and deposited fine sediment). Strategic choice of study sites meant that agricultural intensity and hydrological alteration were uncorrelated. We studied the relationships of seven traits (with 23 trait categories) to our environmental predictor variables using general linear models and an information-theoretic model-selection approach. Life form, nitrogen fixation and spore formation were key traits that showed the strongest relationships with environmental stressors. Overall, FI (farming intensity) exerted stronger effects on algal communities than hydrological alteration. The large-bodied, non-attached, filamentous algae that dominated under high farming intensities have limited dispersal abilities but may cope with unfavourable conditions through the formation of spores. Antagonistic interactions between FI and flow reduction were observed for some trait variables, whereas no interactions occurred for nitrogen concentration and fine sediment. Our conceptual framework was well supported by tests of ten specific hypotheses predicting effects of resource supply and disturbance on algal traits. Our study also shows that investigating a

  2. Actors of the hydrogen sector in France

    This document proposes brief presentations (web site address, activities) of actors operating in the hydrogen sector in France. These actors are public actors who can be incentive or financing actors (ADEME, ANR) or research institutions (CNRS, CEA, university and engineering schools, IFP, INERIS, INRETS), private actors like industrial groups (Air Liquide, AREVA, GDF Suez, Total, PSA Peugeot Citroen, Renault, Saint-Gobain, SNECMA, ST Microelectronics, 3M, Veolia Environnement) or small companies (Alca Torda Applications, Axane, CETH2, Helion, MaHytec, N-GHY, PaxiTech, Sertronic, ULLIT). It also presents the HyPAC platform created by the AFH2 and ADEME), the AFH2 (the French Association for Hydrogen), and regional initiatives

  3. Microsystem design framework based on tool adaptations and library developments

    Karam, Jean Michel; Courtois, Bernard; Rencz, Marta; Poppe, Andras; Szekely, Vladimir

    1996-09-01

    Besides foundry facilities, Computer-Aided Design (CAD) tools are also required to move microsystems from research prototypes to an industrial market. This paper describes a Computer-Aided-Design Framework for microsystems, based on selected existing software packages adapted and extended for microsystem technology, assembled with libraries where models are available in the form of standard cells described at different levels (symbolic, system/behavioral, layout). In microelectronics, CAD has already attained a highly sophisticated and professional level, where complete fabrication sequences are simulated and the device and system operation is completely tested before manufacturing. In comparison, the art of microsystem design and modelling is still in its infancy. However, at least for the numerical simulation of the operation of single microsystem components, such as mechanical resonators, thermo-elements, elastic diaphragms, reliable simulation tools are available. For the different engineering disciplines (like electronics, mechanics, optics, etc) a lot of CAD-tools for the design, simulation and verification of specific devices are available, but there is no CAD-environment within which we could perform a (micro-)system simulation due to the different nature of the devices. In general there are two different approaches to overcome this limitation: the first possibility would be to develop a new framework tailored for microsystem-engineering. The second approach, much more realistic, would be to use the existing CAD-tools which contain the most promising features, and to extend these tools so that they can be used for the simulation and verification of microsystems and of the devices involved. These tools are assembled with libraries in a microsystem design environment allowing a continuous design flow. The approach is driven by the wish to make microsystems accessible to a large community of people, including SMEs and non-specialized academic institutions.

  4. Memorias, subjetividades y actores sociales

    Olga Marlene Sánchez Moncada

    2013-12-01

    Full Text Available En este artículo se presenta una síntesis temática a modo de balance sobre la producción desarrollada en cinco años de la Maestría en Estudios Sociales de la Universidad Pedagógica Nacional. De hecho, los estudiantes de la línea ''Memoria, identidades y actores sociales'' han adelantado sus respectivas investigaciones en torno a estas temáticas con sus correspondientes especificidades. En cuanto a las memorias, han trabajado indagaciones sobre ciencias sociales escolares y la configuración de memoria nacional, en las cuales se han acompañado procesos de construcción de memoria con organizaciones sociales, además de analizar procesos de construcción de memorias sobre el conflicto armado colombiano. Asimismo, se ha abordado una variedad de temas en el enfoque dado a los individuos con potencial de cambio y transformación social. Finalmente, en relación con las subjetividades se han explorado temas como: performatividad, identidades atribuidas, identidades autoatribuidas y la constitución de sujeto.

  5. Uclean: A Requirement Based Object-Oriented Etl Framework

    Payal Pahwa; Shweta Taneja; Garima Thakur

    2011-01-01

    Data warehouse is used to provide effective results from multidimensional data analysis. The accuracyand correctness of these results depend on the quality of the data. To improve data quality, data must beproperly extracted, transformed and loaded into the data warehouse. This ETL process is the key to thesuccess of a data warehouse. In this paper we propose a conceptual ETL framework for an objectoriented data warehouse design, the framework is called UCLEAN. This framework takes into accou...

  6. An Online Learning-based Framework for Tracking

    Chaudhuri, Kamalika; Freund, Yoav; Hsu, Daniel

    2012-01-01

    We study the tracking problem, namely, estimating the hidden state of an object over time, from unreliable and noisy measurements. The standard framework for the tracking problem is the generative framework, which is the basis of solutions such as the Bayesian algorithm and its approximation, the particle filters. However, these solutions can be very sensitive to model mismatches. In this paper, motivated by online learning, we introduce a new framework for tracking. We provide an efficient t...

  7. TP-model transformation-based-control design frameworks

    Baranyi, Péter

    2016-01-01

    This book covers new aspects and frameworks of control, design, and optimization based on the TP model transformation and its various extensions. The author outlines the three main steps of polytopic and LMI based control design: 1) development of the qLPV state-space model, 2) generation of the polytopic model; and 3) application of LMI to derive controller and observer. He goes on to describe why literature has extensively studied LMI design, but has not focused much on the second step, in part because the generation and manipulation of the polytopic form was not tractable in many cases. The author then shows how the TP model transformation facilitates this second step and hence reveals new directions, leading to powerful design procedures and the formulation of new questions. The chapters of this book, and the complex dynamical control tasks which they cover, are organized so as to present and analyze the beneficial aspect of the family of approaches (control, design, and optimization). Additionally, the b...

  8. An evidence-based conceptual framework of healthy cooking.

    Raber, Margaret; Chandra, Joya; Upadhyaya, Mudita; Schick, Vanessa; Strong, Larkin L; Durand, Casey; Sharma, Shreela

    2016-12-01

    Eating out of the home has been positively associated with body weight, obesity, and poor diet quality. While cooking at home has declined steadily over the last several decades, the benefits of home cooking have gained attention in recent years and many healthy cooking projects have emerged around the United States. The purpose of this study was to develop an evidence-based conceptual framework of healthy cooking behavior in relation to chronic disease prevention. A systematic review of the literature was undertaken using broad search terms. Studies analyzing the impact of cooking behaviors across a range of disciplines were included. Experts in the field reviewed the resulting constructs in a small focus group. The model was developed from the extant literature on the subject with 59 studies informing 5 individual constructs (frequency, techniques and methods, minimal usage, flavoring, and ingredient additions/replacements), further defined by a series of individual behaviors. Face validity of these constructs was supported by the focus group. A validated conceptual model is a significant step toward better understanding the relationship between cooking, disease and disease prevention and may serve as a base for future assessment tools and curricula. PMID:27413657

  9. Internal modelling under Risk-Based Capital (RBC) framework

    Ling, Ang Siew; Hin, Pooi Ah

    2015-12-01

    Very often the methods for the internal modelling under the Risk-Based Capital framework make use of the data which are in the form of run-off triangle. The present research will instead extract from a group of n customers, the historical data for the sum insured si of the i-th customer together with the amount paid yij and the amount aij reported but not yet paid in the j-th development year for j = 1, 2, 3, 4, 5, 6. We model the future value (yij+1, aij+1) to be dependent on the present year value (yij, aij) and the sum insured si via a conditional distribution which is derived from a multivariate power-normal mixture distribution. For a group of given customers with different original purchase dates, the distribution of the aggregate claims liabilities may be obtained from the proposed model. The prediction interval based on the distribution for the aggregate claim liabilities is found to have good ability of covering the observed aggregate claim liabilities.

  10. Conceptual framework for knowledge-based learning environments

    Mustafa Alshawi

    2004-01-01

    The traditional concept of "one-size-fits-all" educational and training programmes is no more fully adequate to meet the increasing demand worldwide. E-learning, as an alternative approach to traditional face-toface education, is creating immense challenges for educational institutions to develop new approaches for the production and delivery of cost effective and efficient e-contents. Although, there have been many developments in web-based programmes, they have not fully attained their potential due to a variety of factors. These include:1 ) lack of exchangeability between learning materials, 2) delivery mechanisms incompatible with the pedagogical design, 3) low student interaction and insensitive learning processes, 4) absence of intelligent online programme advice and guidance, 5) inflexibility in meeting diverse needs, and 6) institutionally centred ineffective implementation strategies. This paper addresses the critical elements for successful delivery of e-learning environments and then focuses on proposing a framework for the development of an integrated knowledge-based learning environment which has the potential to producer cost effective and personalised training programmes.

  11. Linking Land Change with Driving Forces and Actors: Four Conceptual Models

    Matthias Bürgi

    2010-12-01

    Full Text Available Models in land change research are often chosen arbitrarily based on practical rather than theoretical considerations. More specifically, research on land change is often based on a research framework with three crucial elements - driving forces, actors, and land change - in an ad hoc and case-specific configuration. The lack of solid and widely applicable concepts about the conceptual link between these three elements can negatively affect individual research projects and hamper communication and generalizations beyond the individual project. We present four basic models for linking land change with driving forces and actors. These models are illustrated with examples from the research literature. Based on the main characteristics of the models and practical considerations, we propose guidelines for choosing among the four models for specific studies. More generally, we want to raise awareness that land change research is especially demanding with respect to conceptual backgrounds and that conceptual considerations will help improve the scientific quality of individual studies as well as their potential contribution towards generic theories of land change.

  12. Formal Specification and Validation of a Hybrid Connectivity Restoration Algorithm for Wireless Sensor and Actor Networks

    Nazir Ahmad Zafar

    2012-08-01

    Full Text Available Maintaining inter-actor connectivity is extremely crucial in mission-critical applications of Wireless Sensor and Actor Networks (WSANs, as actors have to quickly plan optimal coordinated responses to detected events. Failure of a critical actor partitions the inter-actor network into disjoint segments besides leaving a coverage hole, and thus hinders the network operation. This paper presents a Partitioning detection and Connectivity Restoration (PCR algorithm to tolerate critical actor failure. As part of pre-failure planning, PCR determines critical/non-critical actors based on localized information and designates each critical node with an appropriate backup (preferably non-critical. The pre-designated backup detects the failure of its primary actor and initiates a post-failure recovery process that may involve coordinated multi-actor relocation. To prove the correctness, we construct a formal specification of PCR using Z notation. We model WSAN topology as a dynamic graph and transform PCR to corresponding formal specification using Z notation. Formal specification is analyzed and validated using the Z Eves tool. Moreover, we simulate the specification to quantitatively analyze the efficiency of PCR. Simulation results confirm the effectiveness of PCR and the results shown that it outperforms contemporary schemes found in the literature.

  13. A CONCEPTUAL FRAMEWORK FOR ONTOLOGY BASED INFORMATION RETRIEVAL

    J.UMA MAHESWARI

    2010-10-01

    Full Text Available Improving Information retrieval by employing the use of ontologies to overcome the limitations of syntactic search has been one of the inspirations since its emergence. This paper proposes a conceptualframework to exploit ontology based Information retrieval. This framework constitutes of five phases namely Query parsing, word stemming, ontology matching, weight assignment, ranking and Information retrieval. In the first phase, the user query is parsed into sequence of words. The parsed contents are curtailed to identify the significant word by ignoring superfluous terms such as “to”, “is”,”ed”, “about” and the like in the stemming phase. The objective of the stemming phase is to throttle feature descriptors to root words, which in turn will increase efficiency; this reduces the time consumed for searching the superfluous terms, which may not significantly influence the effectiveness of the retrieval process. In the third phase ontology matching is carried out by matching the parsed words with the relevant terms in the existing ontology. If the ontology does not exist, it is recommended to generate the required ontology. In the fourth phase the weights are assigned based on the distance between the stemmed words and the terms in the ontology uses improved matchmaking algorithm. The range of weights varies from 0 to 1 based on the level of distance in the ontology (superclass- ubclass. The aggregate weights are calculated for the all the combination of stemmed words. The combination with the highest score is ranked as the best and the corresponding information is retrieved. The conceptual workflow is illustrated with an e-governance casestudy Academic Information System.

  14. A Rough Sets-based Agent Trust Management Framework

    Sadra Abedinzadeh

    2013-03-01

    Full Text Available In a virtual society, which consists of several autonomous agents, trust helps agents to deal with the openness of the system by identifying the best agents capable of performing a specific task, or achieving a special goal. In this paper, we introduce ROSTAM, a new approach for agent trust management based on the theory of Rough Sets. ROSTAM is a generic trust management framework that can be applied to any types of multi agent systems. However, the features of the application domain must be provided to ROSTAM. These features form the trust attributes. By collecting the values for these attributes, ROSTAM is able to generate a set of trust rules by employing the theory of Rough Sets. ROSTAM then uses the trust rules to extract the set of the most trusted agents and forwards the user’s request to those agents only. After getting the results, the user must rate the interaction with each trusted agent. The rating values are subsequently utilized for updating the trust rules. We applied ROSTAM to the domain of cross-language Web search. The resulting Web search system recommends to the user the set of the most trusted pairs of translator and search engine in terms of the pairs that return the results with the highest precision of retrieval.

  15. A Viola-Jones based hybrid face detection framework

    Murphy, Thomas M.; Broussard, Randy; Schultz, Robert; Rakvic, Ryan; Ngo, Hau

    2013-12-01

    Improvements in face detection performance would benefit many applications. The OpenCV library implements a standard solution, the Viola-Jones detector, with a statistically boosted rejection cascade of binary classifiers. Empirical evidence has shown that Viola-Jones underdetects in some instances. This research shows that a truncated cascade augmented by a neural network could recover these undetected faces. A hybrid framework is constructed, with a truncated Viola-Jones cascade followed by an artificial neural network, used to refine the face decision. Optimally, a truncation stage that captured all faces and allowed the neural network to remove the false alarms is selected. A feedforward backpropagation network with one hidden layer is trained to discriminate faces based upon the thresholding (detection) values of intermediate stages of the full rejection cascade. A clustering algorithm is used as a precursor to the neural network, to group significant overlappings. Evaluated on the CMU/VASC Image Database, comparison with an unmodified OpenCV approach shows: (1) a 37% increase in detection rates if constrained by the requirement of no increase in false alarms, (2) a 48% increase in detection rates if some additional false alarms are tolerated, and (3) an 82% reduction in false alarms with no reduction in detection rates. These results demonstrate improved face detection and could address the need for such improvement in various applications.

  16. A web based Publish-Subscribe framework for mobile computing

    Cosmina Ivan

    2014-05-01

    Full Text Available The growing popularity of mobile devices is permanently changing the Internet user’s computing experience. Smartphones and tablets begin to replace the desktop as the primary means of interacting with various information technology and web resources. While mobile devices facilitate in consuming web resources in the form of web services, the growing demand for consuming services on mobile device is introducing a complex ecosystem in the mobile environment. This research addresses the communication challenges involved in mobile distributed networks and proposes an event-driven communication approach for information dissemination. This research investigates different communication techniques such as polling, long-polling and server-side push as client-server interaction mechanisms and the latest web technologies standard WebSocket , as communication protocol within a Publish/Subscribe paradigm. Finally, this paper introduces and evaluates the proposed framework, that is a hybrid approach of WebSocket and event-based publish/subscribe for operating in mobile environments.

  17. Geotube: a network based framework for Goescience dissemination

    Grieco, Giovanni; Porta, Marina; Merlini, Anna Elisabetta; Caironi, Valeria; Reggiori, Donatella

    2016-04-01

    Geotube is a project promoted by Il Geco cultural association for the dissemination of Geoscience education in schools by open multimedia environments. The approach is based on the following keystones: • A deep and permanent epistemological reflection supported by confrontation within the International Scientific Community • A close link with the territory • A local to global inductive approach to basic concepts in Geosciences • The construction of an open framework to stimulate creativity The project has been developed as an educational activity for secondary schools (11 to 18 years old students). It provides for the creation of a network of institutions to be involved in order to ensure the required diversified expertise. They can comprise: Universities, Natural Parks, Mountain Communities, Municipalities, schools, private companies working in the sector, and so on. A single project lasts for one school year (October to June) and requires 8-12 work hours at school, one or two half day or full day excursions and a final event of presentation of outputs. The possible outputs comprise a pdf or ppt guidebook, a script and a video completely shooted and edited by the students. The framework is open in order to adapt to the single class or workgroup needs, the level and type of school, the time available and different subjects in Geosciences. In the last two years the two parts of the project have been successfully tested separately, while the full project will be presented at schools in in its full form in April 2016, in collaboration with University of Milan, Campo dei Fiori Natural Park, Piambello Mountain Community and Cunardo Municipality. The production of geotube outputs has been tested in a high school for three consecutive years. Students produced scripts and videos on the following subjects: geologic hazards, volcanoes and earthquakes, and climate change. The excursions have been tested with two different high schools. Firstly two areas have been

  18. Semantics-Based Interoperability Framework for the Geosciences

    Sinha, A.; Malik, Z.; Raskin, R.; Barnes, C.; Fox, P.; McGuinness, D.; Lin, K.

    2008-12-01

    Interoperability between heterogeneous data, tools and services is required to transform data to knowledge. To meet geoscience-oriented societal challenges such as forcing of climate change induced by volcanic eruptions, we suggest the need to develop semantic interoperability for data, services, and processes. Because such scientific endeavors require integration of multiple data bases associated with global enterprises, implicit semantic-based integration is impossible. Instead, explicit semantics are needed to facilitate interoperability and integration. Although different types of integration models are available (syntactic or semantic) we suggest that semantic interoperability is likely to be the most successful pathway. Clearly, the geoscience community would benefit from utilization of existing XML-based data models, such as GeoSciML, WaterML, etc to rapidly advance semantic interoperability and integration. We recognize that such integration will require a "meanings-based search, reasoning and information brokering", which will be facilitated through inter-ontology relationships (ontologies defined for each discipline). We suggest that Markup languages (MLs) and ontologies can be seen as "data integration facilitators", working at different abstraction levels. Therefore, we propose to use an ontology-based data registration and discovery approach to compliment mark-up languages through semantic data enrichment. Ontologies allow the use of formal and descriptive logic statements which permits expressive query capabilities for data integration through reasoning. We have developed domain ontologies (EPONT) to capture the concept behind data. EPONT ontologies are associated with existing ontologies such as SUMO, DOLCE and SWEET. Although significant efforts have gone into developing data (object) ontologies, we advance the idea of developing semantic frameworks for additional ontologies that deal with processes and services. This evolutionary step will

  19. Educación en medios en Turquía: hacia una red de actores múltiples Media Education in Turkey: Toward a Multi-Stakeholder Framework

    E. Nezih Orhon

    2009-03-01

    Full Text Available A partir de los noventa, los canales privados de radio y televisión pusieron las bases de la nueva estructura mediática turca. No hubo en este momento interés alguno por la alfabetización mediática ni por la educación popular sobre los medios de comunicación social, ni siquiera en la juventud. Hasta 2006 no comienzan en Turquía los primeros pasos para una alfabetización y educación mediáticas con un acuerdo entre el Ministerio de Educación y el Consejo Supremo de Radio y Televisión (RTÜK. La agenda de la alfabetización mediática ha de incluir importantes temas, co mo democracia, ciudadanía, derechos humanos, libertad de expresión, identidad, necesidades especiales, cuestiones de discriminación de género… Mediante un enfoque crítico, se reflexiona sobre lo que hasta ahora se ha hecho en Turquía en términos de alfabetización y educación en medios, y lo que se quiere lograr en el futuro. Starting with the 1990s, private radios and televisions were the primary steps in Turkish media’s new structure. At that time, there was no interest in media literacy or media education for people, especially for children. In the past, the emphasis of media literacy education was to protect children and young people from possible harmful effects of media, followed by the critical thinking and development of media messages production skills. This contribution emphasizes the political, social, and economic implications of media messages and stresses the importance of using media effectively. Media literacy and education in Turkey has started with an agreement between the Ministry of National Education and The Radio and Television Supreme Council (RTÜK in 2006/07 school period.This study uses a critical approach to reflect on what has been done so far in Turkey in terms of media literacy and media education, and what needs to be accomplished in the future.

  20. A model-based framework for design of intensified enzyme-based processes

    Román-Martinez, Alicia

    without an excessive investment in experimental resources. Process intensification has recently gained a lot of attention since it is a holistic approach to design safer, cleaner, smaller, cheaper and more efficient processes. This dissertation proposes a methodological approach to achieve intensification......This thesis presents a generic and systematic model-based framework to design intensified enzyme-based processes. The development of the presented methodology was motivated by the needs of the bio-based industry for a more systematic approach to achieve intensification in its production plants...... in enzyme-based processes which have found significant application in the pharmaceutical, food, and renewable fuels sector. The framework uses model-based strategies for (bio)-chemical process design and optimization, including the use of a superstructure to generate all potential reaction...

  1. Online human training of a myoelectric prosthesis controller via actor-critic reinforcement learning.

    Pilarski, Patrick M; Dawson, Michael R; Degris, Thomas; Fahimi, Farbod; Carey, Jason P; Sutton, Richard S

    2011-01-01

    As a contribution toward the goal of adaptable, intelligent artificial limbs, this work introduces a continuous actor-critic reinforcement learning method for optimizing the control of multi-function myoelectric devices. Using a simulated upper-arm robotic prosthesis, we demonstrate how it is possible to derive successful limb controllers from myoelectric data using only a sparse human-delivered training signal, without requiring detailed knowledge about the task domain. This reinforcement-based machine learning framework is well suited for use by both patients and clinical staff, and may be easily adapted to different application domains and the needs of individual amputees. To our knowledge, this is the first my-oelectric control approach that facilitates the online learning of new amputee-specific motions based only on a one-dimensional (scalar) feedback signal provided by the user of the prosthesis. PMID:22275543

  2. A Semantics-Based Information Distribution Framework for Large Web-Based Course Forum System

    Chim, Hung; Deng, Xiaotie

    2008-01-01

    We propose a novel data distribution framework for developing a large Web-based course forum system. In the distributed architectural design, each forum server is fully equipped with the ability to support some course forums independently. The forum servers collaborating with each other constitute the whole forum system. Therefore, the workload of…

  3. The European Union as a Comprehensive Police Actor

    Stephen Anthony Rozée

    2011-12-01

    Full Text Available The European Union (EU has responded to changing security threats by seeking to increase cooperation between the law enforcement agencies of the Member States, granting further powers to Europol and other intelligence-sharing institutions, and by undertaking police missions beyond EU borders. The literature relating to EU policing is generally focused on the ‘internal’ and ‘external’ dimensions, or on specific aspects of police activity. This tendency to concentrate on narrow or isolated areas of policing has led to a significant gap regarding the broader analysis of the EU as a comprehensive police actor. Important questions about the nature of EU policing as a whole, as well as the contribution of policing activities to the EU’s security agenda, remain unexplored in the literature. This article aims to define what is meant by ‘comprehensive policing’ and to indentify criteria by which the comprehensiveness of EU-level policing may be measured. In addition to this, an integrated actorness/police comprehensiveness framework will be presented as a tool for assessing the EU as a comprehensive police actor.

  4. Porphyrin-based covalent organic frameworks as efficient solid photosenzitizers

    Demel, Jan; Hynek, Jan; Lang, Kamil; Rathouský, Jiří; Kubát, Pavel

    Frankfurt am Main: Dechema, 2015. A01.20. [European Conference on Metal Organic Frameworks and Porous Polymers /1./. 11.10.2015-14.10.2015, Templiner See] Institutional support: RVO:61388980 ; RVO:61388955 Subject RIV: CA - Inorganic Chemistry

  5. A framework for evaluating wavelet based watermarking for scalable coded digital item adaptation attacks

    Bhowmik, D.; Abhayaratne, C.

    2009-01-01

    A framework for evaluating wavelet based watermarking schemes against scalable coded visual media content adaptation attacks is presented. The framework, Watermark Evaluation Bench for Content Adaptation Modes (WEBCAM), aims to facilitate controlled evaluation of wavelet based watermarking schemes under MPEG-21 part-7 digital item adaptations (DIA). WEBCAM accommodates all major wavelet based watermarking in single generalised framework by considering a global parameter space, from which t...

  6. LOCAL TEXTURE DESCRIPTION FRAMEWORK FOR TEXTURE BASED FACE RECOGNITION

    R. Reena Rose; A. Suruliandi; K.Meena

    2014-01-01

    Texture descriptors have an important role in recognizing face images. However, almost all the existing local texture descriptors use nearest neighbors to encode a texture pattern around a pixel. But in face images, most of the pixels have similar characteristics with that of its nearest neighbors because the skin covers large area in a face and the skin tone at neighboring regions are same. Therefore this paper presents a general framework called Local Texture Description Framework that uses...

  7. Proposal for a New Economic Framework Based On Islamic Principles

    Shaikh, Salman Ahmed

    2010-01-01

    This book provides a holistic socio-economic framework working in conformity with the Islamic principles. Chapter 2 builds the ground for the proposed framework by discussing the foundations of the ethical precepts of Islam. It discusses the thesis of religion, answers some of the questions in the comparative study of religion and tries to resolve few of the misconceptions about the faith of Islam. Chapter 3 outlines the economic teachings of Islam with regard to earning and spending. It...

  8. Sensor Based Framework for Secure Multimedia Communication in VANET

    Tai-Hoon Kim

    2010-11-01

    Full Text Available Secure multimedia communication enhances the safety of passengers by providing visual pictures of accidents and danger situations. In this paper we proposed a framework for secure multimedia communication in Vehicular Ad-Hoc Networks (VANETs. Our proposed framework is mainly divided into four components: redundant information, priority assignment, malicious data verification and malicious node verification. The proposed scheme jhas been validated with the help of the NS-2 network simulator and the Evalvid tool.

  9. Sensor Based Framework for Secure Multimedia Communication in VANET

    Tai-Hoon Kim; Aneel Rahim; Bin Muhaya, Fahad T.; Zeeshan Shafi Khan; Muhammad Sher

    2010-01-01

    Secure multimedia communication enhances the safety of passengers by providing visual pictures of accidents and danger situations. In this paper we proposed a framework for secure multimedia communication in Vehicular Ad-Hoc Networks (VANETs). Our proposed framework is mainly divided into four components: redundant information, priority assignment, malicious data verification and malicious node verification. The proposed scheme jhas been validated with the help of the NS-2 network simulator a...

  10. Sensor based framework for secure multimedia communication in VANET.

    Rahim, Aneel; Khan, Zeeshan Shafi; Bin Muhaya, Fahad T; Sher, Muhammad; Kim, Tai-Hoon

    2010-01-01

    Secure multimedia communication enhances the safety of passengers by providing visual pictures of accidents and danger situations. In this paper we proposed a framework for secure multimedia communication in Vehicular Ad-Hoc Networks (VANETs). Our proposed framework is mainly divided into four components: redundant information, priority assignment, malicious data verification and malicious node verification. The proposed scheme jhas been validated with the help of the NS-2 network simulator and the Evalvid tool. PMID:22163462

  11. A priority based noise tolerant jet framework and algorithm

    Duffty, Daniel

    2016-01-01

    We introduce a new framework for jet definitions called p-jets that matches the computational speed of the currently used anti-k_T jet algorithm, but avoids combining much of the energy from background pileup events with signal jets. As a first illustration of the p-jet framework, we compare the effectiveness of a p-jet algorithm to the anti-k_T algorithm in reconstructing low energy jets from resonant Z boson production and 50 pileup events.

  12. Actor-Network Theory: sensitive terms and enduring tensions

    Mol, A.

    2010-01-01

    ANT is not a "theory", or, if it is, then a "theory" does not necessarily offer a coherent framework, but may as well be an adaptable, open repository. A list of terms. A set of sensitivities. If ANT is a theory, then a theory helps to tell cases, draw contrasts, articulate silent layers, turn questions upside down, focus on the unexpected, add to one’s sensitivities, propose new terms, and shift stories from one context to another. In this presentation of "Actor Network Theory" the terms "ac...

  13. Journalism : new media, new actors - new ethics?

    Fidalgo, Joaquim

    2009-01-01

    The traditional field of journalism has been facing major challenges in recent years, either because new actors have entered that field (professional journalists actually lost the monopoly of searching, gathering, editing and diffusing news in the public sphere), or because the old actors are increasingly asked to play new roles. The social demand for more public participation in the process of handling news and information, added to the fabulous possibilities of communication brought by the ...

  14. Towards a New Framework of Idea Management as Actor Networks

    Jensen, Anna Rose Vagn

    2013-01-01

    Management of innovation idea development in front-end innovation of R&D organizations has shown to be a challenging task. This paper presents the preliminary results of a PhD project concerning idea management in front-end innovation of R&D organizations. Through theoretical and empirical...

  15. A Framework for Geographic Object-Based Image Analysis (GEOBIA) based on geographic ontology

    Gu, H. Y.; Li, H. T.; Yan, L.; Lu, X. J.

    2015-06-01

    GEOBIA (Geographic Object-Based Image Analysis) is not only a hot topic of current remote sensing and geographical research. It is believed to be a paradigm in remote sensing and GIScience. The lack of a systematic approach designed to conceptualize and formalize the class definitions makes GEOBIA a highly subjective and difficult method to reproduce. This paper aims to put forward a framework for GEOBIA based on geographic ontology theory, which could implement "Geographic entities - Image objects - Geographic objects" true reappearance. It consists of three steps, first, geographical entities are described by geographic ontology, second, semantic network model is built based on OWL(ontology web language), at last, geographical objects are classified with decision rule or other classifiers. A case study of farmland ontology was conducted for describing the framework. The strength of this framework is that it provides interpretation strategies and global framework for GEOBIA with the property of objective, overall, universal, universality, etc., which avoids inconsistencies caused by different experts' experience and provides an objective model for mage analysis.

  16. Silicon Framework-Based Lithium Silicides at High Pressures.

    Zhang, Shoutao; Wang, Yanchao; Yang, Guochun; Ma, Yanming

    2016-07-01

    The bandgap and optical properties of diamond silicon (Si) are not suitable for many advanced applications such as thin-film photovoltaic devices and light-emitting diodes. Thus, finding new Si allotropes with better bandgap and optical properties is desirable. Recently, a Si allotrope with a desirable bandgap of ∼1.3 eV was obtained by leaching Na from NaSi6 that was synthesized under high pressure [Nat. Mater. 2015, 14, 169], paving the way to finding new Si allotropes. Li is isoelectronic with Na, with a smaller atomic core and comparable electronegativity. It is unknown whether Li silicides share similar properties, but it is of considerable interest. Here, a swarm intelligence-based structural prediction is used in combination with first-principles calculations to investigate the chemical reactions between Si and Li at high pressures, where seven new compositions (LiSi4, LiSi3, LiSi2, Li2Si3, Li2Si, Li3Si, and Li4Si) become stable above 8.4 GPa. The Si-Si bonding patterns in these compounds evolve with increasing Li content sequentially from frameworks to layers, linear chains, and eventually isolated Si ions. Nearest-neighbor Si atoms, in Cmmm-structured LiSi4, form covalent open channels hosting one-dimensional Li atom chains, which have similar structural features to NaSi6. The analysis of integrated crystal orbital Hamilton populations reveals that the Si-Si interactions are mainly responsible for the structural stability. Moreover, this structure is dynamically stable even at ambient pressure. Our results are also important for understanding the structures and electronic properties of Li-Si binary compounds at high pressures. PMID:27302244

  17. SIX SIGMA FRAMEWORKS: AN ANALYSIS BASED ON ROGERS’ DIFFUSION OF INNOVATION THEORY

    Kifayah Amar

    2012-06-01

    Full Text Available This paper attempt to analyze frameworks related to Six Sigma and Lean Six Sigma. The basis of analysis the frameworks is the diffusion of innovation theory. Several criteria was used to analyze the frameworks e.g. relative advantage, compatibility, complexity, trialability, observability, communication channels, nature of the social system/culture and extent of change agent.    Based on framework analysis, there is only one framework fits to Rogers’ theory on diffusion of innovation. The framework is a Lean Six Sigma framework which consists elements such owner/manager commitment and involvement, employee involvement, training, culture change and external support. Even though the elements have similarity to other Six Sigma frameworks but they put more attention on culture change and external support. Generally speaking, the culture change and external support are the most important elements to the implementation of Six Sigma or other soft approaches particularly for small organizations.

  18. Livestock in the rice-based economy of Office du Niger: The development potential for increased crop–livestock integration through multi-actor processes

    Doumbia, D.; Paassen, van, AHC; Oosting, S.J.; Zijpp, van der, A.J.

    2012-01-01

    A diagnostic study of the development potential of livestock for the rice-based economy of the Office du Niger (ON) was conducted in Mali. The functioning of selected farming systems and value chains were studied by means of interviews, surveys and farmer group discussions. The findings show that in the ON rice remains the prime agricultural activity; although half of the farm households own cattle (for capital insurance and draught power), livestock management is troublesome because of a lac...

  19. VR/IS Lab Virtual Actor research overview

    Shawver, D.M.; Stansfield, S.

    1995-06-22

    This overview presents current research at Sandia National Laboratories in the Virtual Reality and Intelligent Simulation Lab. Into an existing distributed VR environment which we have been developing, and which provides shared immersion for multiple users, we are adding virtual actor support. The virtual actor support we are adding to this environment is intended to provide semi-autonomous actors, with oversight and high-level guiding control by a director/user, and to allow the overall action to be driven by a scenario. We present an overview of the environment into which our virtual actors will be added in Section 3, and discuss the direction of the Virtual Actor research itself in Section 4. We will briefly review related work in Section 2. First however we need to place the research in the context of what motivates it. The motivation for our construction of this environment, and the line of research associated with it, is based on a long-term program of providing support, through simulation, for situational training, by which we mean a type of training in which students learn to handle multiple situations or scenarios. In these situations, the student may encounter events ranging from the routine occurance to the rare emergency. Indeed, the appeal of such training systems is that they could allow the student to experience and develop effective responses for situations they would otherwise have no opportunity to practice, until they happened to encounter an actual occurance. Examples of the type of students for this kind of training would be security forces or emergency response forces. An example of the type of training scenario we would like to support is given in Section 4.2.

  20. WEB BASED CONFERENCE SYSTEM FOR INTELLIGENCE TELEPRESENCE ROBOT: A FRAMEWORK

    Bayu Kanigoro

    2014-01-01

    Full Text Available Once an individual has access to the Internet, there is a wide variety of different methods of communication and information exchange over the network, one of them is telepresence robot. This study presents a web framework for web conference system of intelligent telepresence robot. The robot is controlled using web conference system from Google App Engine, so the manager/supervisor at office/industry can direct the robot to the intended person to start a discussion/inspection. We build a web application for controlling the multiclient telepresence robot. Experimental result shows the ability of robot to be controlled remotely and smoothly using our framework.

  1. A Common XML-based Framework for Syntactic Annotations

    Ide, Nancy; Erjavec, Tomaz

    2009-01-01

    It is widely recognized that the proliferation of annotation schemes runs counter to the need to re-use language resources, and that standards for linguistic annotation are becoming increasingly mandatory. To answer this need, we have developed a framework comprised of an abstract model for a variety of different annotation types (e.g., morpho-syntactic tagging, syntactic annotation, co-reference annotation, etc.), which can be instantiated in different ways depending on the annotator's approach and goals. In this paper we provide an overview of the framework, demonstrate its applicability to syntactic annotation, and show how it can contribute to comparative evaluation of parser output and diverse syntactic annotation schemes.

  2. Uncertainty in Driftless Area Cold-Water Fishery Decision Making and a Framework for Stakeholder-Based Science

    Schuster, Z.

    2015-12-01

    The paradigm of stakeholder-based science is becoming more popular as organizations such as the U.S. Department of the Interior Climate Science Centers adopt it as a way of providing practicable climate change information to practitioners. One of the key issues stakeholders face in adopting climate change information into their decision processes is how uncertainty is addressed and communicated. In this study, we conducted a series of semi-structured interviews with managers and scientists working on stream habitat restoration of cold-water fisheries in the Driftless Area of Wisconsin that were focused on how they interpret and manage uncertainty and what types of information they need to make better decisions. One of the important lessons we learned from the interviews is that if researchers are going to provide useful climate change information to stakeholders, they need to understand where and how decisions are made and what adaptation measures are actually available in a given decision arena. This method of incorporating social science methods into climate science production can provide a framework for researchers from the Climate Science Centers and others who are interested in pursuing stakeholder-based science. By indentifying a specific ecological system and conducting interviews with actors who work on that system, researchers will be able to gain a better understanding of how their climate change science can fit into existing or shape new decision processes. We also interpreted lessons learned from our interviews via existing literature in areas such as stakeholder-based modeling and the decision sciences to provide guidance specific to the stakeholder-based science process.

  3. Team task allocation method for computer generated actor based on game theory%基于对策论的团队计算机生成角色任务分配方法

    郑延斌; 陶雪丽

    2013-01-01

    针对带有时间约束的、可以动态加入到环境中的复杂任务,建立了一种基于对策论的任务分配模型,并给出了一种任务分配方法.该方法中计算机生成角色(CGA)根据自身掌握的局部信息进行行为选择,并使用虚拟行动方法确保CGA快速学习到一个严格纯策略Nash平衡.仿真实验结果表明该方法是合理的,能够有效地解决动态任务的分配问题.%For the complex tasks with time constraints, which can dynamically be added to environment, a task allocation model based on game theory was established, and a task allocation method was proposed, which made Computer Generated Actor (CGA) be able to choose its actions according to the local information owned by itself, and ensured that CGA learned a strict pure strategy Nash equlibrium quickly by using fictitious play method on behavior coordination. The simulation results show that this method is reasonable,and it can effectively solve the dynamic task allocation problem.

  4. Service Availability Monitoring Framework Based On Commodity Software

    The Worldwide LHC Computing Grid (WLCG) infrastructure continuously operates thousands of grid services scattered around hundreds of sites. Participating sites are organized in regions and support several virtual organizations, thus creating a very complex and heterogeneous environment. The Service Availability Monitoring (SAM) framework is responsible for the monitoring of this infrastructure. SAM is a complete monitoring framework for grid services and grid operational tools. Its current implementation tailored for a decentralized operation replaces the old SAM system which is now being decommissioned from production. SAM provides functionality for submission of monitoring probes, gathering of probes results, processing of monitoring data, and retrieval of monitoring data in terms of service status, availability, and reliability. In this paper we present the SAM framework. We motivate the need from moving from the old SAM to a new monitoring infrastructure deployed and managed in a distributed environment and explain how SAM exploits and builds on top of commodity software, such as Nagios and Apache ActiveMQ, to provide a reliable and scalable system. We also present the SAM architecture by highlighting the adopted technologies and how the different SAM components deliver a complete monitoring framework.

  5. An ontology-based collaborative service framework for agricultural information

    In recent years, China has developed modern agriculture energetically. An effective information framework is an important way to provide farms with agricultural information services and improve farmer's production technology and their income. The mountain areas in central China are dominated by agri...

  6. Framework Based Guidance Navigation and Control Flight Software Development

    McComas, David

    2007-01-01

    This viewgraph presentation describes NASA's guidance navigation and control flight software development background. The contents include: 1) NASA/Goddard Guidance Navigation and Control (GN&C) Flight Software (FSW) Development Background; 2) GN&C FSW Development Improvement Concepts; and 3) GN&C FSW Application Framework.

  7. The Gaia Framework: Version Support In Web Based Open Hypermedia

    Grønbæk, Kaj; Kejser, Thomas

    2004-01-01

    versioning field and GAIA is compared with previous attempts at defining hypermedia versioning frameworks. GAIA is capable of multi-level versioning and versioning of structures and supports freezing mechanisms for both documents and hyperstructure. The experiences from GAIA provide an input to new reference...

  8. Hierarchical Scheduling Framework Based on Compositional Analysis Using Uppaal

    Boudjadar, Jalil; David, Alexandre; Kim, Jin Hyun;

    2014-01-01

    This paper introduces a reconfigurable compositional scheduling framework, in which the hierarchical structure, the scheduling policies, the concrete task behavior and the shared resources can all be reconfigured. The behavior of each periodic preemptive task is given as a list of timed actions, ...

  9. The Gaia Framework: Version Support In Web Based Open Hypermedia

    Kejser, Thomas; Grønbæk, Kaj

    The GAIA framework prototype, described herein, explores the possibilities and problems that arise when combining versioning and open hypermedia paradigms. It will be argued that it - by adding versioning as a separate service in the hypermedia architecture - is possible to build consistent versi...

  10. A research framework of ecosystem services based on functional traits

    Lu, Chun-Xia; AN Kai; XIE Gao-Di; Xiao, Yu

    2012-01-01

    Functional traits influence ecosystem services through their effects on ecosystem attributes, processes and their maintenance. Research on the relationship between functional diversity and ecosystem function can contribute to investigating the mechanism of ecosystem functioning and services supplied, which provides insight on ecosystem services. This study reviewed research on functional traits and framework of ecosystem services, relationship between functional diversity and ecosystem functi...

  11. A Framework for Constraint-Programming based Configuration

    Queva, Matthieu Stéphane Benoit

    algorithm DnSTR is developed in order to solve the dynamic addition and retraction of table constraints at runtime. Finally, we present and evaluate a prototype implementation of ProCoLa and the configuration framework, including the integration in a development environment, tool support and interaction...

  12. Bad Actors Criticality Assessment for Pipeline system

    Nasir, Meseret; Chong, Kit wee; Osman, Sabtuni; Siaw Khur, Wee

    2015-04-01

    Failure of a pipeline system could bring huge economic loss. In order to mitigate such catastrophic loss, it is required to evaluate and rank the impact of each bad actor of the pipeline system. In this study, bad actors are known as the root causes or any potential factor leading to the system downtime. Fault Tree Analysis (FTA) is used to analyze the probability of occurrence for each bad actor. Bimbaum's Importance and criticality measure (BICM) is also employed to rank the impact of each bad actor on the pipeline system failure. The results demonstrate that internal corrosion; external corrosion and construction damage are critical and highly contribute to the pipeline system failure with 48.0%, 12.4% and 6.0% respectively. Thus, a minor improvement in internal corrosion; external corrosion and construction damage would bring significant changes in the pipeline system performance and reliability. These results could also be useful to develop efficient maintenance strategy by identifying the critical bad actors.

  13. VIP - A Framework-Based Approach to Robot Vision

    Gerd Mayer

    2008-11-01

    Full Text Available For robot perception, video cameras are very valuable sensors, but the computer vision methods applied to extract information from camera images are usually computationally expensive. Integrating computer vision methods into a robot control architecture requires to balance exploitation of camera images with the need to preserve reactivity and robustness. We claim that better software support is needed in order to facilitate and simplify the application of computer vision and image processing methods on autonomous mobile robots. In particular, such support must address a simplified specification of image processing architectures, control and synchronization issues of image processing steps, and the integration of the image processing machinery into the overall robot control architecture. This paper introduces the video image processing (VIP framework, a software framework for multithreaded control flow modeling in robot vision.

  14. General scheduling framework in computational Grid based on Petri net

    HU Zhi-gang; HU Rong; GUI Wei-hua; CHEN Jian-er; CHEN Song-qiao

    2005-01-01

    A general scheduling framework (GSF) for independent tasks in computational Grid is proposed in this paper, which modeled by Petri net and located on the layer of Grid scheduler. Furthermore, a new mapping algorithm aimed at time and cost is designed on the basis of this framework. The algorithm uses weighted average fuzzy applicability to express the matching degree between available machines and independent tasks. Some existent heuristic algorithms are tested in GSF, and the results of simulation and comparison not only show good flexibility and adaptability of GSF, but also prove that, given a certain aim, the new algorithm can consider the factors of time and cost as a whole and its performance is higher than those mentioned algorithms.

  15. A Framework for music-based interactive sonification

    Correia Da Silva Diniz, Nuno; Deweppe, Alexander; Demey, Michiel; Leman, Marc

    2010-01-01

    In this paper, a framework for interactive sonification is introduced. It is argued that electroacoustic composition techniques can provide a methodology for structuring and presenting multivariable data through sound. Furthermore, an embodied music cognition driven interface is applied to provide an interactive exploration of the generated output. The motivation and theoretical foundation for this work are presented as well as the framework’s implementation and an exploratory use case.

  16. Functional metal-organic framework based materials and assemblies

    AMELOOT, Rob

    2011-01-01

    Porous solids, such as zeolites and activated carbons, are strategic materials because of the applications they imply. Recently, metal-organic frameworks (MOFs) were introduced as a novel class of porous and crystalline materials. The crystal lattice of these compounds is constructed by coordination bonds between nodes of metal ions and multidentate organic ligands. Because of the wide range of metal ions and ligands that can be combined as MOF building blocks, a vast variety of crystal struc...

  17. WEB BASED CONFERENCE SYSTEM FOR INTELLIGENCE TELEPRESENCE ROBOT: A FRAMEWORK

    Bayu Kanigoro; Widodo Budiharto; Jurike V. Moniaga; Muhsin Shodiq

    2014-01-01

    Once an individual has access to the Internet, there is a wide variety of different methods of communication and information exchange over the network, one of them is telepresence robot. This study presents a web framework for web conference system of intelligent telepresence robot. The robot is controlled using web conference system from Google App Engine, so the manager/supervisor at office/industry can direct the robot to the intended person to start a discussion/inspection. We build a web...

  18. Continuous compliance: a proxy-based monitoring framework

    Vedani, Julien; Ramaharobandro, Fabien

    2013-01-01

    Within the Own Risk and Solvency Assessment framework, the Solvency II directive introduces the need for insurance undertakings to have efficient tools enabling the companies to assess the continuous compliance with regulatory solvency requirements. Because of the great operational complexity resulting from each complete evaluation of the Solvency Ratio, this monitoring is often complicated to implement in practice. This issue is particularly important for life insurance companies due to the ...

  19. Environmental impact evaluation using an agent based simulation framework

    Schroijen, M.J.T.; Van Tooren, M.J.L.

    2010-01-01

    Environmental issues play an increasingly important role in aviation, affecting the desirability of novel technologies directly. The desirability of a certain technology with respect to environmental issues is determined by the system of systems level impact instead of the often used system level impact. Changing this perspective introduces additional complexities in how the system level evaluation should be related to the desired system of systems (SoS) level evaluation. A framework is propo...

  20. A Framework for .NET Mobile-Based Application Services

    Yousif AlBastaki

    2012-01-01

    Problem statement: This study presents a .NET framework in the form of a course registration system, which is designed to facilitate the process of registration of courses at any educational institute. Approach: The study outlines the main concepts related to the analysis and design methodologies that had been applied. Results: The whole process, starting from the students login to the system till their requests were fulfilled, was presented. Conclusion: The implementation provides students w...

  1. SDN Based User-Centric Framework for Heterogeneous Wireless Networks

    Zhaoming Lu

    2016-01-01

    Full Text Available Due to the rapid growth of mobile data traffic, more and more basestations and access points (APs have been densely deployed to provide users with ubiquitous network access, which make current wireless network a complex heterogeneous network (HetNet. However, traditional wireless networks are designed with network-centric approaches where different networks have different quality of service (QoS strategies and cannot easily cooperate with each other to serve network users. Massive network infrastructures could not assure users perceived network and service quality, which is an indisputable fact. To address this issue, we design a new framework for heterogeneous wireless networks with the principle of user-centricity, refactoring the network from users’ perspective to suffice their requirements and preferences. Different from network-centric approaches, the proposed framework takes advantage of Software Defined Networking (SDN and virtualization technology, which will bring better perceived services quality for wireless network users. In the proposed user-centric framework, control plane and data plane are decoupled to manage the HetNets in a flexible and coadjutant way, and resource virtualization technology is introduced to abstract physical resources of HetNets into unified virtualized resources. Hence, ubiquitous and undifferentiated network connectivity and QoE (quality of experience driven fine-grained resource management could be achieved for wireless network users.

  2. The actor-critic algorithm as multi-time-scale stochastic approximation

    Borkar, Vivek S.; Konda, Vijaymohan R

    1997-01-01

    The actor-critic algorithm of Barto and others for simulation-based optimization of Markov decision processes is cast as a two time Scale stochastic approximation. Convergence analysis, approximation issues and an example are studied.

  3. La prueba PISA: una mirada alternativa desde la Teoría del Actor-Red

    Paola Paredes Suzarte

    2015-07-01

    Full Text Available En el marco de la proliferación de las evaluaciones estandarizadas, inscritas en lo que ha sido conceptualizado por la literatura como políticas de accountability o de rendición de cuentas, se ofrece por medio de este artículo una línea de pensamiento y discusión alternativa sobre la prueba PISA. Utilizando como enfoque la Teoría del Actor-Red (TAR de Bruno Latour, se presentan ejercicios de traslación epistémica de la prueba PISA desde un modelo de pensamiento positivista moderno, a uno materialista pragmático en el que se privilegia una descripción constructivista y analítica de los componentes que la constituyen. En base al seguimiento y análisis de noticias sobre la prueba PISA desplegadas en diarios electrónicos en Chile y Argentina, más la revisión de fuentes secundarias, se exponen algunas de las controversias suscitadas en torno a la evaluación y se discute sobre su posible impacto en nuestras percepciones sobre educación y calidad. También se problematiza el carácter neutral y objetivo de la prueba, y se levanta la pregunta acerca de su posible agencia en la cristalización de las relaciones de centro-periferia entre países que, en el marco del enfoque de la TAR, tiene sentido explorar. 

  4. Chinas carbon-intensity target: climate actors and policy developments

    Stensdal, Iselin

    2012-11-01

    China has become the largest GHG emitting country, and announced in 2009 its first policy objective measured in carbon emissions. The carbon-intensity target is to reduce the carbon intensity by 40-45 % by 2020 compared to 200 levels. Since then there has been further policy developments in order to attain the reduction carbon intensity and steer China towards a low-carbon development. The 12th 5-year plan (2011-2015) is strong on incentives for reducing China's carbon intensity such as energy conservation measures and the establishment of new market-based mechanisms. While the central government forms the policies, the implementation is dependent on a range of actors. In addition to the climate change bureaucracy, the positive forces and actors on GHG mitigation is presented. All in all, there are promising developments in China for the years to come.(auth)

  5. Model-based visual tracking the OpenTL framework

    Panin, Giorgio

    2011-01-01

    This book has two main goals: to provide a unifed and structured overview of this growing field, as well as to propose a corresponding software framework, the OpenTL library, developed by the author and his working group at TUM-Informatik. The main objective of this work is to show, how most real-world application scenarios can be naturally cast into a common description vocabulary, and therefore implemented and tested in a fully modular and scalable way, through the defnition of a layered, object-oriented software architecture.The resulting architecture covers in a seamless way all processin

  6. A Graph Based Framework to Model Virus Integration Sites.

    Fronza, Raffaele; Vasciaveo, Alessandro; Benso, Alfredo; Schmidt, Manfred

    2016-01-01

    With next generation sequencing thousands of virus and viral vector integration genome targets are now under investigation to uncover specific integration preferences and to define clusters of integration, termed common integration sites (CIS), that may allow to assess gene therapy safety or to detect disease related genomic features such as oncogenes. Here, we addressed the challenge to: 1) define the notion of CIS on graph models, 2) demonstrate that the structure of CIS enters in the category of scale-free networks and 3) show that our network approach analyzes CIS dynamically in an integrated systems biology framework using the Retroviral Transposon Tagged Cancer Gene Database (RTCGD) as a testing dataset. PMID:27257470

  7. New V(IV)-based metal-organic framework having framework flexibility and high CO2 adsorption capacity.

    Liu, Ying-Ya; Couck, Sarah; Vandichel, Matthias; Grzywa, Maciej; Leus, Karen; Biswas, Shyam; Volkmer, Dirk; Gascon, Jorge; Kapteijn, Freek; Denayer, Joeri F M; Waroquier, Michel; Van Speybroeck, Veronique; Van Der Voort, Pascal

    2013-01-01

    A vanadium based metal-organic framework (MOF), VO(BPDC) (BPDC(2-) = biphenyl-4,4'-dicarboxylate), adopting an expanded MIL-47 structure type, has been synthesized via solvothermal and microwave methods. Its structural and gas/vapor sorption properties have been studied. This compound displays a distinct breathing effect toward certain adsorptives at workable temperatures. The sorption isotherms of CO(2) and CH(4) indicate a different sorption behavior at specific temperatures. In situ synchrotron X-ray powder diffraction measurements and molecular simulations have been utilized to characterize the structural transition. The experimental measurements clearly suggest the existence of both narrow pore and large pore forms. A free energy profile along the pore angle was computationally determined for the empty host framework. Apart from a regular large pore and a regular narrow pore form, an overstretched narrow pore form has also been found. Additionally, a variety of spectroscopic techniques combined with N(2) adsorption/desorption isotherms measured at 77 K demonstrate that the existence of the mixed oxidation states V(III)/V(IV) in the titled MOF structure compared to pure V(IV) increases the difficulty in triggering the flexibility of the framework. PMID:23256823

  8. A framework of Chinese semantic text mining based on ontology learning

    Zhang, Yu-feng; Hu, Feng

    2012-01-01

    Text mining and ontology learning can be effectively employed to acquire the Chinese semantic information. This paper explores a framework of semantic text mining based on ontology learning to find the potential semantic knowledge from the immensity text information on the Internet. This framework consists of four parts: Data Acquisition, Feature Extraction, Ontology Construction, and Text Knowledge Pattern Discovery. Then the framework is applied into an actual case to try to find out the valuable information, and even to assist the consumers with selecting proper products. The results show that this framework is reasonable and effective.

  9. A geometric framework for mixed quantum states based on a Kähler structure

    In this paper we introduce a geometric framework for mixed quantum states based on a Kähler structure. The geometric framework includes a symplectic form, an almost complex structure, and a Riemannian metric that characterize the space of mixed quantum states. We argue that the almost complex structure is integrable. We also in detail discuss a visualizing application of this geometric framework by deriving a geometric uncertainty relation for mixed quantum states. The framework is computationally effective and it provides us with a better understanding of general quantum mechanical systems. (paper)

  10. Proposal of a Framework for Internet Based Licensing of Learning Objects

    Santos, Osvaldo A.; Ramos, Fernando M. S.

    2004-01-01

    This paper presents a proposal of a framework whose main objective is to manage the delivery and rendering of learning objects in a digital rights controlled environment. The framework is based on a digital licensing scheme that requires each learning object to have the proper license in order to be rendered by a trusted player. A conceptual model…

  11. Model-Based Reasoning in the Physics Laboratory: Framework and Initial Results

    Zwickl, Benjamin M.; Hu, Dehui; Finkelstein, Noah; Lewandowski, H. J.

    2015-01-01

    We review and extend existing frameworks on modeling to develop a new framework that describes model-based reasoning in introductory and upper-division physics laboratories. Constructing and using models are core scientific practices that have gained significant attention within K-12 and higher education. Although modeling is a broadly applicable…

  12. Role of Knowledge Management and Analytical CRM in Business: Data Mining Based Framework

    Ranjan, Jayanthi; Bhatnagar, Vishal

    2011-01-01

    Purpose: The purpose of the paper is to provide a thorough analysis of the concepts of business intelligence (BI), knowledge management (KM) and analytical CRM (aCRM) and to establish a framework for integrating all the three to each other. The paper also seeks to establish a KM and aCRM based framework using data mining (DM) techniques, which…

  13. Evaluating a Professional Development Framework to Empower Chemistry Teachers to Design Context-Based Education

    Stolk, Machiel Johan; Bulte, Astrid; De Jong, Onno; Pilot, Albert

    2012-01-01

    Even experienced chemistry teachers require professional development when they are encouraged to become actively engaged in the design of new context-based education. This study briefly describes the development of a framework consisting of goals, learning phases, strategies and instructional functions, and how the framework was translated into a…

  14. Framework for the Development of OER-Based Learning Materials in ODL Environment

    Teng, Khor Ean; Hung, Chung Sheng

    2013-01-01

    This paper describes the framework for the development of OER-based learning materials "TCC121/05 Programming Fundamentals with Java" for ODL learners in Wawasan Open University (WOU) using three main development phases mainly: creation, evaluation and production phases. The proposed framework has further been tested on ODL learners to…

  15. A graphical model framework for decoding in the visual ERP-based BCI speller

    Martens, S.M.M.; Mooij, J.M.; Hill, N.J.; Farquhar, J.D.R.; Schölkopf, B.

    2011-01-01

    We present a graphical model framework for decoding in the visual ERP-based speller system. The proposed framework allows researchers to build generative models from which the decoding rules are obtained in a straightforward manner. We suggest two models for generating brain signals conditioned on t

  16. An Ensemble Learning Based Framework for Traditional Chinese Medicine Data Analysis with ICD-10 Labels

    Gang Zhang; Yonghui Huang; Ling Zhong; Shanxing Ou; Yi Zhang; Ziping Li

    2015-01-01

    Objective. This study aims to establish a model to analyze clinical experience of TCM veteran doctors. We propose an ensemble learning based framework to analyze clinical records with ICD-10 labels information for effective diagnosis and acupoints recommendation. Methods. We propose an ensemble learning framework for the analysis task. A set of base learners composed of decision tree (DT) and support vector machine (SVM) are trained by bootstrapping the training dataset. The base learners are...

  17. Evaluating a Web-Based Educational Module on Oral Cancer Examination Based on a Behavioral Framework.

    Wee, Alvin G; Zimmerman, Lani M; Pullen, Carol H; Allen, Carl M; Lambert, Paul M; Paskett, Electra D

    2016-03-01

    Patients at risk of developing oral and/or oropharyngeal cancer (OPC) are more likely to see primary care providers (PCPs) than a dentist. Many PCPs do not regularly perform oral cancer examination (OCE). The purpose of this study was to design a web-based educational program based on a behavioral framework to encourage PCPs to conduct OCE. PCPs were solicited to provide feedback on the program and to evaluate their short-term knowledge. The integrated behavioral model was used to design the program. Fifteen PCPs (five in each group: physicians, physician assistants, and nurse practitioners) reviewed the program and took a posttest: (1) index of knowledge of risk factors for oral cancer (RiskOC) and (2) index of knowledge of diagnostic procedures for oral cancer (DiagOC). Findings from the process evaluation were mainly positive, with comments on the length of the program comprising the ten negative comments. No significant difference among groups of PCPs (physicians, physician assistants, and nurse practitioners) was detected for DiagOC (p = 0.43) or RiskOC (p = 0.201). A program on OPC for PCPs should be less than 40 min. Postviewing knowledge outcomes were similar for all PCPs. The web-based program on OPC based on a behavioral framework could have similar short-term knowledge outcomes for all PCPs and may increase the number of PCPs performing OCEs. PMID:25572460

  18. Further Analysis Of A Framework To Analyze Network Performance Based On Information Quality

    A Kazmierczak

    2011-12-01

    Full Text Available Abstract In [1], Geng and Li presented a framework to analyze network performance based on information quality. In that paper, the authors based their framework on the flow of information from a Base Station (BS to clients. The theory they established can, and needs, to be extended to accommodate for the flow of information from the clients to the BS. In this work, we use that framework and study the case of client to BS data transmission. Our work closely parallels the work of Geng and Li, we use the same notation and liberally reference their work. Keywords: information theory, information quality, network protocols, network performance

  19. A closed-loop based framework for design requirement management

    Zhang, Zhinan; Li, Xuemeng; Liu, Zelin

    2014-01-01

    Requirement management plays a crucial role in determining a successful engineering design project. The focus of current requirement research is on the development of requirement elicitation, analysis and formalization methods and tools. Moreover, the existing requirement research often pays...... attention to the fuzzy front end of product design process. In fact, there exists more needs for requirement knowledge at each stage of a product lifecycle and requirement also has its own lifecycle. However, the research in the field of engineering design lack of a framework to support requirement...... management from product lifecycle, and requirement and requirement management lifecycle views. This paper highlights the importance of requirement lifecycle management and aims at closing the requirement information loop in product lifecycle. Then, it addresses the requirement management in engineering...

  20. Nanoporous lanthanide-carboxylate frameworks based on 5-nitroisophthalic acid.

    Chen, San-Ping; Ren, Yi-Xia; Wang, Wei-Tao; Gao, Sheng-Li

    2010-02-14

    The reactions of lanthanide nitrates with 5-nitroisophthalic acid (ab. 5-H(2)nip) in DMF and ethanol (1 : 1) mixed solution gave rise to three nanoporous lanthanide polymers, {[Ln(2)(5-nip)(3)(DMF)(4)](DMF)(2)}(n) (Ln = Nd (), Dy (), Ho (), 5-nip = 5-nitroisophthalate). Single-crystal X-ray diffraction analyses reveal that they are isomorphous and feature three-dimensional metal-organic frameworks with two-dimensional intersecting channels occupied by guest DMF molecules constructed from the linkage of dimer Ln(2)C(6)O(12) SBUs and 5-nip ligands. The guest DMF molecules can be reversibly removed from as identified using TGA-DSC and PXRD. The heat of adsorption of the guest-free sample of with DMF was measured with a value of 10.3 kJ mol(-1) by an RD496-III type microcalorimeter. In addition, the photoluminescent property of was investigated. PMID:20104317

  1. Off-Policy Actor-Critic

    Degris, Thomas; Sutton, Richard S

    2012-01-01

    This paper presents the first actor-critic algorithm for off-policy reinforcement learning. Our algorithm is online and incremental, and its per-time-step complexity scales linearly with the number of learned weights. Previous work on actor-critic algorithms is limited to the on-policy setting and does not take advantage of the recent advances in off-policy gradient temporal-difference learning. Off-policy techniques, such as Greedy-GQ, enable a target policy to be learned while following and obtaining data from another (behavior) policy. For many problems, however, actor-critic methods are more practical than action value methods (like Greedy-GQ) because they explicitly represent the policy; consequently, the policy can be stochastic and utilize a large action space. In this paper, we illustrate how to practically combine the generality and learning potential of off-policy learning with the flexibility in action selection given by actor-critic methods. We derive an incremental, linear time and space complexi...

  2. The rising influence of urban actors

    Nijman, J.E.

    2009-01-01

    It is time to recognize cities as global actors. City networks are reaching across the globe and local city governments are collaborating on crucial environmental issues. Coordinating policy at a local level, they are increasingly taking the lead in tackling global problems such as climate change.

  3. The Corporation as a Political Actor

    Rasche, Andreas

    2015-01-01

    . On the other hand, European scholars have recently promoted an understanding of corporate social responsibility (CSR) emphasizing that firms often assume a political role because they increasingly provide public goods and become involved in multi-actor governance processes. This article contrasts...... perspectives share a number of commonalities and complement each other....

  4. Sobre o natural e o actor

    Tavares, Margarida

    2010-01-01

    Neste artigo, procura-se reflectir sobre o conceito de natural quando aplicado ao trabalho do actor. Parte-se de quatro relevantes textos da dramaturgia ocidental, a saber: Hamlet, de Shakespeare; Crítica da ‘Escola das mulheres’ e O improviso de Versalhes, de Molière; e O teatro cómico, de Goldoni.

  5. A Streams-Based Framework for Defining Location-Based Queries

    Jensen, Christian Søndergaard; Xuegang, Huang

    2007-01-01

    n infrastructure is emerging that supports the delivery of on-line, location-enabled services to mobile users. Such services involve novel database queries, and the database research community is quite active in proposing techniques for the efficient processing of such queries. In parallel to this...... and the comparison of queries. The paper also proposes a categorization of location-based queries......., the management of data streams has become an active area of research. While most research in mobile services concerns performance issues, this paper aims to establish a formal framework for defining the semantics of queries encountered in mobile services, most notably the so-called continuous queries...

  6. Towards A Streams-Based Framework for Defining Location-Based Queries

    Huang, Xuegang; Jensen, Christian S.

    An infrastructure is emerging that supports the delivery of on-line, location-enabled services to mobile users. Such services involve novel database queries, and the database research community is quite active in proposing techniques for the effi- cient processing of such queries. In parallel to...... semantics and the comparison of queries. The paper also proposes a categorization of location-based queries....... this, the management of data streams has become an active area of research. While most research in mobile services concerns performance issues, this paper aims to establish a formal framework for defining the semantics of queries encountered in mobile services, most notably the so-called continuous...

  7. Comparison of Physics Frameworks for WebGL-Based Game Engine

    Yogya Resa

    2014-03-01

    Full Text Available Recently, a new technology called WebGL shows a lot of potentials for developing games. However since this technology is still new, there are still many potentials in the game development area that are not explored yet. This paper tries to uncover the potential of integrating physics frameworks with WebGL technology in a game engine for developing 2D or 3D games. Specifically we integrated three open source physics frameworks: Bullet, Cannon, and JigLib into a WebGL-based game engine. Using experiment, we assessed these frameworks in terms of their correctness or accuracy, performance, completeness and compatibility. The results show that it is possible to integrate open source physics frameworks into a WebGLbased game engine, and Bullet is the best physics framework to be integrated into the WebGL-based game engine.

  8. The moral problem of worse actors

    Scott Wisor

    2014-05-01

    Full Text Available Individuals and institutions sometimes have morally stringent reasons to not do a given action. For example, an oil company might have morally stringent reasons to refrain from providing revenue to a genocidal regime, or an engineer might have morally stringent reasons to refrain from providing her expertise in the development of weapons of mass destruction. But in some cases, if the agent does not do the action, another actor will do it with much worse consequences. For example, the oil company might know their assets will be bought by a company with worse environmental and labor practices. Or the engineer might know her position will be filled by a more ambitious and amoral engineer. I call this the moral problem of worse actors (MPWA. MPWA gives reason, at least some of the time, to consider otherwise morally impermissible actions permissible or even obligatory. On my account, doing the action in the circumstances of MPWA remains morally objectionable even if permissible or obligatory, and this brings additional moral responsibilities and obligations to the actor. Similarly, not doing the action in the circumstances of MPWA may also bring additional (but different moral responsibilities and obligations. Acknowledging MPWA creates considerable challenges, as many bad actors may appeal to it to justify morally objectionable action. In this paper, I develop a set of strategies for individuals and institutions to handle MPWA. This includes appeals to integrity and the proper attribution of expressive responsibility, regulatory responsibility, and compensatory responsibility. I also address a set of related concerns, including worries about incentivizing would-be bad actors, concerns about epistemic uncertainty, and the problem of mala in se exceptions.

  9. Multi-actor governance of sustainable biofuels in developing countries: The case of Mozambique

    This paper describes and analyses the multi-actor governance process that made Mozambique the first African nation-state to develop a national policy framework for sustainable biofuels. The paper draws on findings from action research conducted in Mozambique between December 2008 and July 2012. We analyse interactions between the changing governance context, the course of the multi-actor governance process, and the choices in relation to governance framework characteristics and content for four successive stages of governance framework development. This provides the basis for reflection on the competences required for effective multi-actor sustainability governance, and a discussion about the role of the nation-state in sustainability governance of global economies such as biofuels. The governance framework for sustainable biofuels has contributed to a more transparent and secure investment climate for biofuels in Mozambique. Key factors for success were (1) the presence of different types of competences during the various stages of the governance framework development, (2) closing the gap between ‘licences to sell’ and ‘licences to produce’ across different governance levels, and (3) balancing between the short- and long-term objectives for biofuel production in Mozambique and requirements of global biofuel markets. Developing-country nation-states can provide an essential contribution to these success-factors for global governance of sustainable biofuels. - Highlights: • Mozambique is the first African country that developed a national governance framework for sustainable biofuels. • Independence, representation, expertise and operational capacity are essential competences in multi-actor sustainability governance. • Developing country's nation-states play an essential role in harmonizing short- and long-term objectives across different governance levels. • Synergies between licences to sell and licences to produce biofuels sustainably should

  10. Code generation for the MPEG Reconfigurable Video Coding framework: From CAL actions to C functions

    Wipliez, Matthieu; Roquier, Ghislain; Raulet, Mickael; Nezan, Jean François; Déforges, Olivier

    2008-01-01

    International audience The MPEG reconfigurable video coding (RVC) framework is a new standard under development by MPEG that aims at providing a unified specification of current MPEG video coding technologies. In this framework, a decoder is built as a configuration of video coding modules taken from the standard ldquoMPEG toolbox libraryrdquo. The elements of the library are specified using the CAL actor language (CAL). CAL is a dataflow based language providing computation models that ar...

  11. RSPF-based Prognosis Framework for Estimation of Remaining Useful Life in Energy Storage Devices

    National Aeronautics and Space Administration — This paper presents a case study where a RSPF-based prognosis framework is applied to estimate the remaining useful life of an energy storage device (Li-Ion...

  12. Framework of Pattern Recognition Model Based on the Cognitive Psychology

    2002-01-01

    According to the fundamental theory of visual cognition mechanism and cognitive psychology,the visual pattern recognition model is introduced briefly.Three pattern recognition models,i.e.template-based matching model,prototype-based matching model and feature-based matching model are built and discussed separately.In addition,the influence of object background information and visual focus point to the result of pattern recognition is also discussed with the example of recognition for fuzzy letters and figures.

  13. Movement-based interaction in camera spaces: a conceptual framework

    Eriksson, Eva; Hansen, Thomas Riisgaard; Lykke-Olesen, Andreas

    2007-01-01

    In this paper we present three concepts that address movement-based interaction using camera tracking. Based on our work with several movementbased projects we present four selected applications, and use these applications to leverage our discussion, and to describe our three main concepts space......, relations, and feedback. We see these as central for describing and analysing movement-based systems using camera tracking and we show how these three concepts can be used to analyse other camera tracking applications....

  14. An agent-based framework for fuel cycle simulation with recycling

    Simulation of the nuclear fuel cycle is an established field with multiple players. Prior development work has utilized techniques such as system dynamics to provide a solution structure for the matching of supply and demand in these simulations. In general, however, simulation infrastructure development has occurred in relatively closed circles, each effort having unique considerations as to the cases which are desired to be modeled. Accordingly, individual simulators tend to have their design decisions driven by specific use cases. Presented in this work is a proposed supply and demand matching algorithm that leverages the techniques of the well-studied field of mathematical programming. A generic approach is achieved by treating facilities as individual entities and actors in the supply-demand market which denote preferences amongst commodities. Using such a framework allows for varying levels of interaction fidelity, ranging from low-fidelity, quick solutions to high-fidelity solutions that model individual transactions (e.g. at the fuel-assembly level). The power of the technique is that it allows such flexibility while still treating the problem in a generic manner, encapsulating simulation engine design decisions in such a way that future simulation requirements can be relatively easily added when needed. (authors)

  15. A Machine Learning Based Analytical Framework for Semantic Annotation Requirements

    Hamed Hassanzadeh

    2011-04-01

    Full Text Available The Semantic Web is an extension of the current web in which information is given well-defined meaning.The perspective of Semantic Web is to promote the quality and intelligence of the current web by changingits contents into machine understandable form. Therefore, semantic level information is one of thecornerstones of the Semantic Web. The process of adding semantic metadata to web resources is calledSemantic Annotation. There are many obstacles against the Semantic Annotation, such as multilinguality,scalability, and issues which are related to diversity and inconsistency in content of different web pages.Due to the wide range of domains and the dynamic environments that the Semantic Annotation systemsmust be performed on, the problem of automating annotation process is one of the significant challenges inthis domain. To overcome this problem, different machine learning approaches such as supervisedlearning, unsupervised learning and more recent ones like, semi-supervised learning and active learninghave been utilized. In this paper we present an inclusive layered classification of Semantic Annotationchallenges and discuss the most important issues in this field. Also, we review and analyze machinelearning applications for solving semantic annotation problems. For this goal, the article tries to closelystudy and categorize related researches for better understanding and to reach a framework that can mapmachine learning techniques into the Semantic Annotation challenges and requirements.

  16. Highly efficient electrochemiluminescence based on pyrazolecarboxylic metal organic framework.

    Feng, Chao; Ma, Yu-Heng; Zhang, Duo; Li, Xue-Jing; Zhao, Hong

    2016-03-15

    A series of transition metal complexes with the ligands 3-pyrazoledicarboxylic acid (H2L(1)) and ethyl 1-(2-ethoxy-2-oxoethyl)-1H-pyrazole-3-carboxylate (epzc) have been synthesized. The epzc generated 1-(carboxymethyl)-1H-pyrazole-3-carboxylic acid (H2L(2)) by an in situ hydrothermal hydrolysis reaction, using a one-pot method. Simple mononuclear [Co(HL(1))2(H2O)2] () and [Ni(L(2))(H2O)4] (), dinuclear [Ni2(L(1))2(H2O)6]·H2O () and [Cu2(L(2))2(H2O)4] () and 2D frameworks [Cu2(L(1))2]n (), [Co2(L(2))2(H2O)4]n () have been isolated. The structures have been established by single-crystal X-ray diffraction, and the complexes characterized by FT-IR, thermogravimetric analysis (TGA), PRXD, UV-Vis spectroscopy, and fluorescent spectroscopy. , , and were further assembled to form a supramolecular structure by hydrogen-bonding interactions and/or ππ stacking. and both possess a 2D network structure that is further interlinked via intermolecular hydrogen-bonding interactions. Most importantly, the complexes demonstrated highly intense electrochemiluminescence (ECL) in DMF solution. PMID:26883832

  17. Accountability of States and Non-state Actors under the International Law of Child Soldiering

    2008-01-01

    The thesis examines the accountability of state and non-state actors under international law of child soldiering. It argues that states and non-state actors as such must be made accountable for breaching their obligation under the prohibition of the conscription and enlistment of children under the age of fifteen years old or using them to participate actively in hostilities. The argument is based on the Security Council resolutions on children and armed conflict and the 2001 International La...

  18. 10 Finnish business actors' perceptions of their Chinese business partners and key personnel

    Fay, Lisa Kaarina

    2012-01-01

    The market impacts caused by globalization and the internationalization of companies are requiring the ability to operate in demanding, diverse and changing business environments but also requiring the consideration of differing cultural norms. This study will explore the perceptions of a number of Finnish business actors who have worked and conducted business with Chinese business actors and personnel. The empirical part of this thesis is based on a qualitative study as a research a...

  19. Ef3S: An evaluation framework for flash-based systems

    Galfano, Salvatore; Di Carlo, Stefano; Indaco, Marco; Prinetto, Paolo Ernesto

    2013-01-01

    NAND Flash memories are gaining popularity in the development of electronic embedded systems for both consumer and mission-critical applications. NAND Flashes crucially influence computing systems development and performances. EF3S, a framework to easily assess NAND Flash based memory systems performances (reliability, throughput, power), is presented. The framework is based on a simulation engine and a running environment which enable developers to assess any application impact. Experimental...

  20. The design, usage, and performance of GridUFO: A Grid based Unified Framework for Optimization

    Munawar, Asim; Wahib, Mohamed; Munetomo, Masaharu; Akama, Kiyoshi

    2010-01-01

    We present GridUFO (Grid based Unified Framework for Optimization), a Service Oriented Architecture (SOA) compliant Problem Solving Environment (PSE) that allows the user to implement/share metaheuristics based optimization algorithms over a Grid. GridUFO eradicates the shortcomings of earlier projects and provides a unified approach for using algorithm/problem pair over a Grid in the easiest possible “plug & play” manner. This framework allows the users to concentrate on the actual applicati...

  1. Conflicts Between Forestry and Wood-Processing Industry in Bosnia-Herzegovina: Reasons, Actors and Possible Solutions

    Bruno Marić

    2012-06-01

    Full Text Available Background and Purpose: Caused by appearance of new stakeholders and diversification of their interests towards forests, different forest-related conflicts emerged worldwide. As a country with economy in transition and relatively young democracy, Bosnia-Herzegovina might be suitable for understanding the roots, actors and varieties of these conflicts. This paper deals with the most frequent forest-related conflicts, main actors involved as well as undertaken actions in order to manage them in Bosnia-Herzegovina. Material and Methods: The theoretical framework is based on the Conflict Management Progress Triangle consisting of three dimensions of conflict: substance, process and relations. As particular focus in this paper is given to conflicts between forestry and wood-processing industry, the primary parties in this study were public forestry companies and wood processing companies. For the purpose of this survey a special questionnaire has been designed. The survey population included the most important actors of forest and wood-processing industry as follows: ministries of forestry, nature protection and physical planning at all levels, managers/owners of wood-processing companies, managers of public forest companies and public forest administration, representatives of the most important environmental NGOs and professional associations, managers of protected areas and water management authorities, heads of forest research institutions, economy of chambers and international institutions. In total 136 questionnaires were collected, out of which 68 respondents identified conflicts between forestry and wood-processing industry as the most important ones. Results and Conclusion: The numerical (tabulated yield table of normative nature presents data given to six yield classes (base age: 25 years including the most important stand structural and yield features expressing in terms of main stand, removing stand (which can be removed in tending

  2. Innovation in the plural of the alpine cre-actors

    Andréa Finger-Stich

    2009-06-01

    Full Text Available The capacity to innovate for a sustainable development of alpine territories cannot depend only on economic, legal and political conditions defined by the State at national and international levels. It depends also on local conditions that situate historically and geographically the actors in a continuity of social and ecological relationships. This approach highlights the collective – thus organisational – dimensions of the innovation process, including the imagination, the development, the implementation and even the diffusion of a new practice. Our point of view is that for contributing to the sustainable development of the Alps, innovations need to change the ecological, political, social and cultural relationships engaging the actors in these territories. This change affects as much the object territory as the subject actor of the territory. This is why innovating in the Alps means also innovating the Alps and the alpine actors (Cosalp, 2008. Based on a research about local people’s participation in the management of alpine communal forests, the article shows the importance of local interactions involving actors of diverse occupation, gender, age and origins1.La capacité d’innovation pour un développement durable des territoires alpins ne peut dépendre uniquement de conditions économiques, légales et politiques définies par les Etats aux échelles nationale et internationale. Elle dépend aussi de conditions locales, qui situent historiquement et géographiquement les acteurs dans une continuité de relations sociales et écologiques. Cette perspective accentue l’importance de la dimension collective, donc organisationnelle, du processus d’innovation, allant de l’imagination, puis au développement, à la réalisation – voire la diffusion – d’une nouvelle pratique. Le point de vue de cet article est qu’une innovation, pour contribuer au développement durable des Alpes, doit changer les relations

  3. An Agent Communication Framework Based on XML and SOAP Technique

    李晓瑜

    2009-01-01

    This thesis introducing XML technology and SOAP technology,present an agent communication fi-amework based on XML and SOAP technique,and analyze the principle,architecture,function and benefit of it. At the end, based on KQML communication primitive lan- guages.

  4. A Framework of Concurrent Mechanism Based on Java Multithread

    Wuxue Jiang

    2013-09-01

    Full Text Available The continuously increased demand for paralleling multitask in domains such as grid computing and cloud computing has significantly promoted research on concurrent mechanism and concurrent programming. The Java programming language supports multithread mechanism for developing paralleling programs, however, it is difficult to apply Java concurrent primitives to specific problems. Thus, for the development of high reliable and qualitative Java concurrent programs, this paper analyses Java multithread mechanism and it’s realization, studies the concurrent mechanism based on Java synchronization and interactive communication mechanism , compares the concurrent structure based on operating system and based on Java multithread, sums up some concurrent programming rules and strategies to prevent deadlock. A frame instance based on entire synchronization is presented, which can help to develop concurrent programs quickly.  

  5. A New Customer Segmentation Framework Based on Biclustering Analysis

    Xiaohui Hu; Haolan Zhang; Xiaosheng Wu; Jianlin Chen; Yu Xiao; Yun Xue; Tiechen Li; Hongya Zhao

    2014-01-01

    The paper presents a novel approach for customer segmentation which is the basic issue for an effective CRM ( Customer Relationship Management ). Firstly, the chi-square statistical analysis is applied to choose set of attributes and K-means algorithm is employed to quantize the value of each attribute. Then DBSCAN algorithm based on density is introduced to classify the customers into three groups (the first, the second and the third class). Finally biclustering based on improved Apriori alg...

  6. A Framework to Prevent QR Code Based Phishing Attacks

    Dayaratne, T. T.

    2016-01-01

    Though the rapid development and spread of Information and Communication Technology (ICT) making people's life much more easier, on the other hand it causing some serious threats to the society. Phishing is one of the most common cyber threat, that most users falls in. This research investigate on QR code based phishing attacks which is a newly adopted intrusive method and how to enhance the awareness and avoidance behavior of QR based phishing attacks through the user centric security educat...

  7. DEVELOPING GEOLOCATION CHAT BASE APPLICATION WITH IONIC FRAMEWORK

    Nguyen, Thong Van

    2016-01-01

    In this thesis, a mobile application was developed based on web technology to demonstrate the power of flexible ability of the web platform. It is the chat application in which user can attend their chat room based on their current location and communicate with people near them. The good mobile application can be achieved with the web platform instead of developing the native application which will required more development and maintain time for the owner. A web developer can reuse their ...

  8. KNOWLEDGE SOCIETY, GENERAL FRAMEWORK FOR KNOWLEDGE BASED ECONOMY

    Dragos CRISTEA

    2011-03-01

    Full Text Available This paper tries to present the existent relation between knowledge society and knowledge based economy. We will identify the main pillars of knowledge society and present their importance for the development of knowledge societies. Further, we will present two perspectives over knowledge societies, respectively science and learning perspectives, that directly affects knowledge based economies. At the end, we will conclude by identifying some important questions that must be answered regarding this new social paradigm.

  9. KNOWLEDGE SOCIETY, GENERAL FRAMEWORK FOR KNOWLEDGE BASED ECONOMY

    Dragos CRISTEA; Matei, Daniela

    2011-01-01

    This paper tries to present the existent relation between knowledge society and knowledge based economy. We will identify the main pillars of knowledge society and present their importance for the development of knowledge societies. Further, we will present two perspectives over knowledge societies, respectively science and learning perspectives, that directly affects knowledge based economies. At the end, we will conclude by identifying some important questions ...

  10. Community-Based Monitoring Frameworks: Increasing the Effectiveness of Environmental Stewardship

    Conrad, Catherine T.; Daoust, Tyson

    2008-03-01

    This article presents an adaptable community-based monitoring (CBM) framework. The investigators used a well-tested conceptual CBM framework developed by the Canadian Community Monitoring Network (CCMN) as a basis from which to work. With the use of feedback from various types of CBM groups in the Province of Nova Scotia, Canada, obtained through surveys and interviews, the CCMN framework was modified into a document that attempts to address current disparities and inefficiencies within most CBM systems. The need for such a framework was underscored by the lack of stewardship groups’ use of standardized monitoring protocols and inability to effectively provide information to decision makers. From the information collected through the survey, it was concluded that the proposed framework must be a functional, multiparty form of CBM that addresses the key concerns of a standardized monitoring and communication program and must be able to be fed into the environmental-management system.

  11. Implementing Value-Based Payment Reform: A Conceptual Framework and Case Examples.

    Conrad, Douglas A; Vaughn, Matthew; Grembowski, David; Marcus-Smith, Miriam

    2016-08-01

    This article develops a conceptual framework for implementation of value-based payment (VBP) reform and then draws on that framework to systematically examine six distinct multi-stakeholder coalition VBP initiatives in three different regions of the United States. The VBP initiatives deploy the following payment models: reference pricing, "shadow" primary care capitation, bundled payment, pay for performance, shared savings within accountable care organizations, and global payment. The conceptual framework synthesizes prior models of VBP implementation. It describes how context, project objectives, payment and care delivery strategies, and the barriers and facilitators to translating strategy into implementation affect VBP implementation and value for patients. We next apply the framework to six case examples of implementation, and conclude by discussing the implications of the case examples and the conceptual framework for future practice and research. PMID:26545852

  12. A continuum mechanics-based framework for optimizing boundary and finite element meshes associated with underground excavations-framework

    Zsáki, Attila M.; Curran, John H.

    2005-11-01

    Many field problems, from stress analysis, heat transfer to contaminant transport, deal with disturbances in a continuum caused by a source (defined by its discrete geometry) and a region of interest (where a solution is sought). Depending on the location of regions of interest in relation to the sources, the level of geometric detail necessary to represent the sources in a model can vary considerably. A practical application of stress analysis in mining is the evaluation of the effects of continuous excavation on the states of stress around mine openings. Labour intensive model preparation and lengthy computation coupled with the interpretation of analysis results can have considerable impact on the successful operation of an underground mine, where stope failures can cost tens of millions of dollars and possibly lead to closure of the mine.A framework is proposed based on continuum mechanics principles to automatically optimize the level of geometric detail required for an analysis by simplifying the model geometry using expanded and modified algorithms that originated in computer graphics. This reduction in model size directly translates to savings in computational time. The results obtained from an optimized model have accuracy comparable to the uncertainty in input data (e.g. rock mass properties, geology, etc.). This first paper defines the optimization framework, while a companion paper investigates its efficiency and application to practical mining and excavation-related problems. Copyright

  13. Design and construction of porous metal–organic frameworks based on flexible BPH pillars

    Three metal–organic frameworks (MOFs), [Co2(BPDC)2(4-BPH)·3DMF]n (1), [Cd2(BPDC)2(4-BPH)2·2DMF]n (2) and [Ni2(BDC)2(3-BPH)2 (H2O)·4DMF]n (3) (H2BPDC=biphenyl-4,4′-dicarboxylic acid, H2BDC=terephthalic acid, BPH=bis(pyridinylethylidene)hydrazine and DMF=N,N′-dimethylformamide), have been solvothermally synthesized based on the insertion of heterogeneous BPH pillars. Framework 1 has “single-pillared” MOF-5-like motif with inner cage diameters of up to 18.6 Å. Framework 2 has “double pillared” MOF-5-like motif with cage diameters of 19.2 Å while 3 has “double pillared” 8-connected framework with channel diameters of 11.0 Å. Powder X-ray diffraction (PXRD) shows that 3 is a dynamic porous framework. - Graphical abstract: By insertion of flexible BPH pillars based on “pillaring” strategy, three metal–organic frameworks are obtained showing that the porous frameworks can be constructed in a much greater variety. Highlights: ► Frameworks 1 and 2 have MOF-5 like motif. ► The cube-like cages in 1 and 2 are quite large, comparable to the IRMOF-10. ► Framework 1 is “single-pillared” mode while 2 is “double-pillared” mode. ► PXRD and gas adsorption analysis show that 3 is a dynamic porous framework.

  14. 'Special' non-human actors in the 'inclusive' early childhood classroom

    Watson, Karen; Millei, Zsuzsa; Petersen, Eva Bendix

    2015-01-01

    these objects effect on all who is present in the classroom, we ask the following questions: What do these non-human actors do in the ‘inclusive’ classroom and with what effects? How do non-human actors reproduce/produce the ‘normal’, impossible/possible ways to be and act, thus control educators and......It is well established in research that early childhood classrooms are one of the most controlled environments during the human life course. When control is discussed, the enactment of regulatory frameworks and various discourses are analysed but less focus is paid on the materialities of...... classrooms. In this article, we pay attention to ‘special’ non-human actors present in an ‘inclusive’ early childhood classroom. These ‘special’ non-human actors are so named as they operate in the classroom as objects specific for the child with a diagnosis. The ‘special’ non-human actors, in the specific...

  15. Security Framework for Agent-Based Cloud Computing

    K Venkateshwaran

    2015-06-01

    Full Text Available Agent can play a key role in bringing suitable cloud services to the customer based on their requirements. In agent based cloud computing, agent does negotiation, coordination, cooperation and collaboration on behalf of the customer to make the decisions in efficient manner. However the agent based cloud computing have some security issues like (a. addition of malicious agent in the cloud environment which could demolish the process by attacking other agents, (b. denial of service by creating flooding attacks on other involved agents. (c. Some of the exceptions in the agent interaction protocol such as Not-Understood and Cancel_Meta protocol can be misused and may lead to terminating the connection of all the other agents participating in the negotiating services. Also, this paper proposes algorithms to solve these issues to ensure that there will be no intervention of any malicious activities during the agent interaction.

  16. Towards a Mobile-based ADAS Simulation Framework

    Gonçalves, João S. V.; Jacob, João; Rossetti, Rosaldo J. F.; Coelho, António; Rodrigues, Rui

    2014-01-01

    In this paper we propose a multi-agent-based driving simulator which integrates a test-bed that allows ADAS developers to compress testing time and carry out tests in a controlled environment while using a low-cost setup. We use the SUMO microscopic simulator and a serious-game-based driving simulator which has geodata provided from standard open sources. This simulator connects to an Android device and sends data such as the current GPS coordinates and transportation network data. One import...

  17. The moral problem of worse actors

    Wisor, Scott

    2014-01-01

    Individuals and institutions sometimes have morally stringent reasons to not do a given action. For example, an oil company might have morally stringent reasons to refrain from providing revenue to a genocidal regime, or an engineer might have morally stringent reasons to refrain from providing her expertise in the development of weapons of mass destruction. But in some cases, if the agent does not do the action, another actor will do it with much worse consequences. For example, the oil comp...

  18. Towards feature selection in actor-critic algorithms

    Rohanimanesh, Khashayar; Roy, Nicholas; Tedrake, Russell Louis

    2009-01-01

    Choosing features for the critic in actor-critic algorithms with function approximation is known to be a challenge. Too few critic features can lead to degeneracy of the actor gradient, and too many features may lead to slower convergence of the learner. In this paper, we show that a wellstudied class of actor policies satisfy the known requirements for convergence when the actor features are selected carefully. We demonstrate that two popular representations for va...

  19. High-extensible scene graph framework based on component techniques

    LI Qi-cheng; WANG Guo-ping; ZHOU Feng

    2006-01-01

    In this paper, a novel component-based scene graph is proposed, in which all objects in the scene are classified to different entities, and a scene can be represented as a hierarchical graph composed of the instances of entities. Each entity contains basic data and its operations which are encapsulated into the entity component. The entity possesses certain behaviours which are responses to rules and interaction defined by the high-level application. Such behaviours can be described by script or behaviours model. The component-based scene graph in the paper is more abstractive and high-level than traditional scene graphs. The contents of a scene could be extended flexibly by adding new entities and new entity components, and behaviour modification can be obtained by modifying the model components or behaviour scripts. Its robustness and efficiency are verified by many examples implemented in the Virtual Scenario developed by Peking University.

  20. A Framework Model for an Order Fulfillment System Based on Service Oriented Architecture

    YANG Li-xi; LI Shi-qi

    2008-01-01

    To effectively implement order fulfillment, we present an integrated framework model focusing on the whole process of order fulfillment. Firstly, five aims of the OFS (order fulfillment system) are built. Then after discussing three major processes of order fulfillment, we summarize functional and quality attributes of the OFS. Subsequently, we investigate SOA (Service Oriented Architecture) and present a SOA meta-model to be an integrated framework and to fulfill quality requirements. Moreover, based on the SOA meta-model, we construct a conceptual framework model that aims to conveniently integrate other functions from different systems into the order fulfillment system. This model offers enterprises a new approach to implementing order fulfillment.

  1. A Crowd-Sourced Data Based Analytical Framework for Urban Planning

    Li; Dong; Long; Ying

    2015-01-01

    Aimed at the challenges faced by the current urban development and urban planning, along with the research opportunities brought by "big data," this paper proposes an analytical framework based on crowd-sourced data for urban planning by reviewing related literature and practice. The framework is mainly oriented towards three major requirements of analysis in urban planning: the physical spaces, the user communities, and the social relationships. This analytical framework can be regarded as a preliminary attempt for future data-intensive applications in urban planning and assessment.

  2. Minutiae Fusion Based Framework for Thumbprint Identification of Identical Twins

    Kamta Nath Mishra; Srivastava, P.C.; Anupam Agrawal; Rishu Garg; Ankur Singh

    2013-01-01

    Identical twins identification is a challenging task because they share the same DNA sequence. This research paper presents minutiae coordinates and orientation angles fusion based technique for thumbprint identification of identical twins. Six different thumbprint images of identical twins were taken at a fixed time interval using H3 T&A terminal. The minutiae coordinates and orientation angles of these thumbprints were fused to form a union set. The union set values were stored in the smar...

  3. An Intersecting Cortical Model Based Framework for Human Face Recognition

    Ahmed G. Mahgoub

    2008-04-01

    Full Text Available This paper introduces a novel method for human face recognition based on a simplified approach for the Pulse Coupled Neural Network (PCNN Algorithm. The face image is introduced to the Intersecting Cortical Model (ICM to be iterated 200 times, and then the time signals for the faces are compared to make a decision. Experimental results for human face recognition confirm that the proposed method lends itself to higher classification accuracy relative to existing techniques.

  4. An Intersecting Cortical Model Based Framework for Human Face Recognition

    Ahmed G. Mahgoub; Amira A. Ebeid; Hossam-El-Deen M. Abdel-Baky; El-Sayed A. El-Badawy

    2008-01-01

    This paper introduces a novel method for human face recognition based on a simplified approach for the Pulse Coupled Neural Network (PCNN) Algorithm. The face image is introduced to the Intersecting Cortical Model (ICM) to be iterated 200 times, and then the time signals for the faces are compared to make a decision. Experimental results for human face recognition confirm that the proposed method lends itself to higher classification accuracy relative to existing techniques.

  5. An Agent-based framework for cooperation in Supply Chain

    Benaissa Ezzeddine; Benabdelhafid Abdellatif; Benaissa Mounir

    2012-01-01

    Supply Chain coordination has become a critical success factor for Supply Chain management (SCM) and effectively improving the performance of organizations in various industries. Companies are increasingly located at the intersection of one or more corporate networks which are designated by "Supply Chain". Managing this chain is mainly based on an 'information sharing' and redeployment activities between the various links that comprise it. Several attempts have been made by industrialists and...

  6. Dynamic Distance Learning Framework using Problem Based Assessment

    Khoja, Shakeel; Rahman, Afzal; Shaikh, Zubair

    2002-01-01

    Education is undergoing a major paradigm shift towards learning rather then teaching. Learning is no longer considered as a process transferring and distributing knowledge to the students. It is now viewed as a transformational process whereby students acquire facts, principles, and theories as conceptual tools for reasoning and problem solving in meaningful contexts. Internet is playing an important role for such student based learning. The objective of this paper is to develop an educationa...

  7. Design and Implementation of Telemedicine based on Java Media Framework

    Xiong, Fengguang; Jia, Zhiyan

    According to analyze the importance and problem of telemedicine in this paper, a telemedicine system based on JMF is proposed to design and implement capturing, compression, storage, transmission, reception and play of a medical audio and video. The telemedicine system can solve existing problems that medical information is not shared, platform-dependent is high, software is incompatibilities and so on. Experimental data prove that the system has low hardware cost, and is easy to transmission and storage, and is portable and powerful.

  8. An inference-based framework for managing data provenance

    Huq, Mohammad Rezwanul

    2013-01-01

    Scientists can facilitate data intensive applications to study and understand the behavior of a complex system. In a data intensive application, a scientific model facilitates raw data products, collected from various sources, to produce new data products. Based on the generated output, scientists used to make decisions that could potentially affect the system which is being studied. Therefore, it is important to have the ability of tracing an output data product back to its source values if ...

  9. Custodianship as an Ethical Framework for Biospecimen-Based Research

    Yassin, Rihab; Lockhart, Nicole; Riego, Mariana González del; Pitt, Karen; Thomas, Jeffrey W.; Weiss, Linda; Compton, Carolyn

    2010-01-01

    Human biological specimens (biospecimens) are increasingly important for research that aims to advance human health. Yet, despite significant proliferation in specimen-based research and discoveries during the past decade, researchremains challenged by the inequitable access to high quality biospecimens that are collected under rigorous ethical standards. This is primarily caused by the complex level of control and ownership exerted by the myriad of stakeholders involved in the biospecimen re...

  10. Study of a Quantum Framework for Search Based Software Engineering

    Wu, Nan; Song, Fangmin; Li, Xiangdong

    2013-06-01

    The Search Based Software Engineering (SBSE) is widely used in the software engineering to identify optimal solutions. The traditional methods and algorithms used in SBSE are criticized due to their high costs. In this paper, we propose a rapid modified-Grover quantum searching method for SBSE, and theoretically this method can be applied to any search-space structure and any type of searching problems.

  11. A Generic Framework for Location-Based Services (LBS) Provisioning

    Ioannis Priggouris; Dimitrios Spanoudakis; Manos Spanoudakis; Stathes Hadjiefthymiades

    2006-01-01

    Location Based Services can be considered as one of the most rapidly expanding fields of the mobile communications sector, with an impressively large application range. The proliferation of mobile/wireless Internet and mobile computing, and the constantly increasing use of handheld, mobile devices and position tracking technologies prepared the grounds for the introduction of this new type of services. The combination of position fixing mechanisms with location-dependent, geographical informa...

  12. An RFID-Based Manufacturing Control Framework for Loosely Coupled Distributed Manufacturing System Supporting Mass Customization

    Chen, Ruey-Shun; Tsai, Yung-Shun; Tu, Arthur

    In this study we propose a manufacturing control framework based on radio-frequency identification (RFID) technology and a distributed information system to construct a mass-customization production process in a loosely coupled shop-floor control environment. On the basis of this framework, we developed RFID middleware and an integrated information system for tracking and controlling the manufacturing process flow. A bicycle manufacturer was used to demonstrate the prototype system. The findings of this study were that the proposed framework can improve the visibility and traceability of the manufacturing process as well as enhance process quality control and real-time production pedigree access. Using this framework, an enterprise can easily integrate an RFID-based system into its manufacturing environment to facilitate mass customization and a just-in-time production model.

  13. A new colour constancy algorithm based on automatic determination of gray framework parameters using neural network

    Mohammad Mehdi Faghih; Zeynab Khosravinia; Mohsen Ebrahimi Moghaddam

    2014-04-01

    Colour constancy is defined as the ability to estimate the actual colours of objects in an acquired image disregarding the colour of scene illuminant. Despite large variety of existing methods, no colour constancy algorithm can be considered as universal. Among the methods, the gray framework is one of the best-known and most used approaches. This framework has some parameters that should be set with appropriate values to achieve the best performance for each image. In this article, we propose a neural network-based algorithm that aims to automatically determine the best value of gray framework parameters for each image. It is a multi-level approach that estimates the optimal values for the gray framework parameters based on relevant features extracted from the input image. Experimental results on two popular colour constancy datasets show an acceptable improvement over state-of-the-art methods.

  14. Fuel Cycle Analysis Framework Base Cases for the IAEA/INPRO GAINS Collaborative Project

    Brent Dixon

    2012-09-01

    Thirteen countries participated in the Collaborative Project GAINS “Global Architecture of Innovative Nuclear Energy Systems Based on Thermal and Fast Reactors Including a Closed Fuel Cycle”, which was the primary activity within the IAEA/INPRO Program Area B: “Global Vision on Sustainable Nuclear Energy” for the last three years. The overall objective of GAINS was to develop a standard framework for assessing future nuclear energy systems taking into account sustainable development, and to validate results through sample analyses. This paper details the eight scenarios that constitute the GAINS framework base cases for analysis of the transition to future innovative nuclear energy systems. The framework base cases provide a reference for users of the framework to start from in developing and assessing their own alternate systems. Each base case is described along with performance results against the GAINS sustainability evaluation metrics. The eight cases include four using a moderate growth projection and four using a high growth projection for global nuclear electricity generation through 2100. The cases are divided into two sets, addressing homogeneous and heterogeneous scenarios developed by GAINS to model global fuel cycle strategies. The heterogeneous world scenario considers three separate nuclear groups based on their fuel cycle strategies, with non-synergistic and synergistic cases. The framework base case analyses results show the impact of these different fuel cycle strategies while providing references for future users of the GAINS framework. A large number of scenario alterations are possible and can be used to assess different strategies, different technologies, and different assumptions about possible futures of nuclear power. Results can be compared to the framework base cases to assess where these alternate cases perform differently versus the sustainability indicators.

  15. A Framework for Model-Based Inquiry Through Agent-Based Programming

    Xiang, Lin; Passmore, Cynthia

    2015-04-01

    There has been increased recognition in the past decades that model-based inquiry (MBI) is a promising approach for cultivating deep understandings by helping students unite phenomena and underlying mechanisms. Although multiple technology tools have been used to improve the effectiveness of MBI, there are not enough detailed examinations of how agent-based programmable modeling (ABPM) tools influence students' MBI learning. The present collective case study sought to contribute by closely investigating ABPM-supported MBI processes for 8th grade students learning about natural selection and adaptation. Eight 8th grade students in groups of 2-3 spent 15 h during a span of 4 weeks collaboratively programming simulations of adaptation based on the natural selection model, using an ABPM tool named NetLogo. The entire programming processes of these learning groups, up to 50 h, were videotaped and then analyzed using mixed methods. Our analysis revealed that the programming task created a context that calls for nine types of MBI actions. These MBI actions were related to both phenomena and the underlying model. Results also showed that students' programming processes took place in consecutive programming cycles and aligned with iterative MBI cycles. A framework for ABPM-supported MBI learning is proposed based upon the findings. Implications in developing MBI instruction involving ABPM tools are discussed.

  16. A General Modifier-based Framework for Inconsistency-Tolerant Query Answering

    Baget, Jean Francois; Benferhat, Salem; Bouraoui, Zied; Croitoru, Madalina; Mugnier, Marie-Laure; Papini, Odile; Rocher, Swan; Tabia, Karim

    2016-01-01

    We propose a general framework for inconsistency-tolerant query answering within existential rule setting. This framework unifies the main semantics proposed by the state of art and introduces new ones based on cardinality and majority principles. It relies on two key notions: modifiers and inference strategies. An inconsistency-tolerant semantics is seen as a composite modifier plus an inference strategy. We compare the obtained semantics from a productivity point of view.

  17. Multi-agent framework based on smart sensors/actuators for machine tools control and monitoring

    Desforges, Xavier; Archimède, Bernard

    2006-01-01

    Throughout the history, the evolutions of the requirements for manufacturing equipments have depended on the changes in the customers' demands. Among the present trends in the requirements for new manufacturing equipments, there are more flexible and more reactive machines. In order to satisfy those requirements, this paper proposes a control and monitoring framework for machine tools based on smart sensor, on smart actuator and on agent concepts. The proposed control and monitoring framework...

  18. A Framework for the Design and Implementation of Learning Objects: a Competence-based Approach

    Direito, Inês; Oliveira, Miguel; Real, Paulo; Antunes, Pedro,; Santos, Arnaldo; Duarte, A. Manuel de Oliveira

    2008-01-01

    This paper presents a framework for the design and implementation of learning objects using a competence-based approach. This framework is illustrated by the development of a standalone Windows application (Trilho GOA) whose primary purpose is to create standardized pedagogical contents trough the aggregation and standardization of instructional resources in several formats that can be used later on a Learning Management System (LMS) supporting SCORM 1.2. The paper contains a brief introducti...

  19. A General SDN-Based IoT Framework with NVF Implementation

    Jie Li; Eitan Altman; Corinne Touati

    2015-01-01

    The emerging technologies of Internet of Things (IoT), soft⁃ware defined networking (SDN), and network function virtual⁃ization (NFV) have great potential for the information service innovation in the cloud and big data era. The architecture models of IoT, SDN with NFV implementation are studied in this paper. A general SDN⁃based IoT framework with NFV implantation is presented. This framework takes advantages of SDN and NFV and improves IoT architecture.

  20. A Hidden Topic-Based Framework toward Building Applications with Short Web Documents

    Phan, Xuan-Hieu; Nguyen, Cam-Tu; Le, Dieu-Thu; NGUYEN, Le-Minh; Horiguchi, Susumu; Ha, Quang-Thuy

    2010-01-01

    This paper introduces a hidden topic-based framework for processing short and sparse documents (e.g., search result snippets, product descriptions, book/movie summaries, and advertising messages) on the Web. The framework focuses on solving two main challenges posed by these kinds of documents: 1) data sparseness and 2) synonyms/homonyms. The former leads to the lack of shared words and contexts among documents while the latter are big linguistic obstacles in natural language processing (NLP)...

  1. Multi-scale computational framework for evaluating of the performance of molecular based flash cells

    Georgiev, Vihar; Asenov, Asen

    2015-01-01

    In this work we present a multi-scale computational framework for evaluation of statistical variability in a molecular based non-volatile memory cell. As a test case we analyse a BULK flash cell with polyoxometalates (POM) inorganic molecules used as storage centres. We focuse our discussions on the methodology and development of our innovative and unique computational framework. The capability of the discussed multi-scale approach is demonstrated by establishing a link between the threshold ...

  2. A MVC framework for policy-based adaptation of workflow processes: A case study on confidentiality

    Geebelen, Kristof; Kulikowski, Eryk; Truyen, Eddy; Joosen, Wouter

    2010-01-01

    Most work on adaptive workflows offers insufficient flexibility to enforce complex policies regarding dynamic, evolvable and robust workflows. In addition, many proposed approaches require customized workflow engines. This paper presents a portable framework for realistic enforcement of dynamic adaptation policies in business processes. The framework is based on the Model-View-Controller (MVC) pattern, commonly used for adding dynamism to web pages. To enhance reusability, our approach suppor...

  3. A perceptually based computational framework for the interpretation of spatial language

    Kelleher, John D.

    2003-01-01

    The goal of this work is to develop a semantic framework to underpin the development of natural language (NL) interfaces for 3 Dimensional (3-D) simulated environments. The thesis of this work is that the computational interpretation of language in such environments should be based on a framework that integrates a model of visual perception with a model of discourse. When interacting with a 3-D environment, users have two main goals the first is to move around in the simulated environment...

  4. Contextualizing Regional Innovation Systems in a Globalizing Learning Economy: On Knowledge Bases and Institutional Frameworks

    Asheim, Bjørn; Coenen, Lars

    2005-01-01

    In order to advance the understanding of which types of regional innovation system represent effective innovation support for what kinds of industry in different regions analyses must be contextualised by reference to the actual knowledge base of various industries as well as to the regional and national institutional framework, which strongly shape the innovation processes of firms. Of special importance is the linkage between the larger institutional frameworks of the national innovation an...

  5. Future Financial Frameworks – Essentials for Risk-Based Capital Management

    Nikolaus von Bomhard; Clemens Frey

    2006-01-01

    This article takes a global view of risk-based capital management in the insurance business, which nowadays is a key issue of the management of insurance companies. A thorough analysis of recent regulatory authorities’ and rating agencies’ positions shows that it is also a core topic in discussions about future financial frameworks in general. As a matter of fact, many parties are involved in the development of these frameworks, so there is an urgent need for common principles. This article i...

  6. A graphical model framework for decoding in the visual ERP-based BCI speller

    Martens, S.M.M.; Mooij, J.M.; Hill, N J; Farquhar, J.D.R.; Schölkopf, B.

    2011-01-01

    We present a graphical model framework for decoding in the visual ERP-based speller system. The proposed framework allows researchers to build generative models from which the decoding rules are obtained in a straightforward manner. We suggest two models for generating brain signals conditioned on the stimulus events. Both models incorporate letter frequency information but assume different dependencies between brain signals and stimulus events. For both models, we derive decoding rules and p...

  7. SenseSeer, mobile-cloud-based lifelogging framework

    Albatal, Rami; Gurrin, Cathal; Zhou, Jiang; Yang, Yang; Carthy, Denise; Li, Na

    2013-01-01

    Smart-phones are becoming our constant companions, they are with us all of the time, being used for calling, web surfing, apps, music listening, TV viewing, social networking, buying, gaming, and a myriad of other uses. Smart-phones are a technology that knows us much better than most of us could imagine. Based on our usage and the fact that we are never far away from our smart phones, they know where we go, who we interact with, what information we consume, and with a little clever software,...

  8. A framework for Internet service evolution based on active object

    HU Hua; ZHANG Yang

    2006-01-01

    The wide use of Internet Service in distributed computing and e-business has made the evolution of Internet Service to be one of the most prevalent research fields in software development domain. Traditional methods for software development cannot adapt to the challenge of Internet Service oriented software development. In this paper, we propose a new paradigm for the evolution of Internet Service with active objects from the characteristics of Internet Service and principles of active objects. The paradigm uses an automatic monitoring mechanism of active object to detect and process evolution requirement in system based on Internet Service.

  9. Scale-space point spread function based framework to boost infrared target detection algorithms

    Moradi, Saed; Moallem, Payman; Sabahi, Mohamad Farzan

    2016-07-01

    Small target detection is one of the major concern in the development of infrared surveillance systems. Detection algorithms based on Gaussian target modeling have attracted most attention from researchers in this field. However, the lack of accurate target modeling limits the performance of this type of infrared small target detection algorithms. In this paper, signal to clutter ratio (SCR) improvement mechanism based on the matched filter is described in detail and effect of Point Spread Function (PSF) on the intensity and spatial distribution of the target pixels is clarified comprehensively. In the following, a new parametric model for small infrared targets is developed based on the PSF of imaging system which can be considered as a matched filter. Based on this model, a new framework to boost model-based infrared target detection algorithms is presented. In order to show the performance of this new framework, the proposed model is adopted in Laplacian scale-space algorithms which is a well-known algorithm in the small infrared target detection field. Simulation results show that the proposed framework has better detection performance in comparison with the Gaussian one and improves the overall performance of IRST system. By analyzing the performance of the proposed algorithm based on this new framework in a quantitative manner, this new framework shows at least 20% improvement in the output SCR values in comparison with Laplacian of Gaussian (LoG) algorithm.

  10. Class-Based Context Quality Optimization For Context Management Frameworks

    Shawky, Ahmed; Olsen, Rasmus Løvenstein; Pedersen, Jens Myrup; Schwefel, Hans-Peter

    Context-awareness is a key requirement in many of today's networks, services and applications. Context Management systems are in this respect used to provide access to distributed, dynamic context information. The reliability of remotely accessed dynamic context information is challenged by network...... delay, packet drop probability, information dynamics and the access strategies taken. QoS classification and system configuration of context management traffic is in this aspect important in order to efficiently balance generated access traffic between network delay, packet loss probability, information...... dynamics and reliability requirements to the information from the applications. In this paper we develop a QoS Control network concept for context management systems. The concept includes a soft realtime algorithm for model based context access configuration and QoS class assignment, and allows to put...

  11. Framework for Location Based Power Aware Routing in MANET

    P K Suri

    2011-03-01

    Full Text Available With the rapid growth in the area of wireless networks and mobile applications, Quality of Service (QoS provision has received the attention of researchers. But unpredictable nature of Mobile Adhoc Networks makes it a very difficult task. Various QoS based protocols have been proposed by the researchers. These protocols make use of either proactive (table-driven or reactive (on-demand approach. Table driven approach requires a large amount of storage space to store the information regarding whole of the network which is not possible in case of small mobile devices. On the other hand, due to flooding of RREQ packets, on-demand routing protocols consumes a large amount of bandwidth and thus increases the network load. Also, there is a transmission delay for the first data packet. This paper presents an optimized approach for providing QoS in a location aware environment.

  12. Web-based networking within the framework of ANENT

    The Korea Atomic Energy Research Institute (KAERI) is actively participating in the Asian Network for Education in Nuclear Technology (ANENT), which is an IAEA activity to promote nuclear knowledge management. This has led KAERI to conduct a web-based networking for nuclear education and training in Asia. The networking encompasses the establishment of a relevant website and a system for a sustainable operation of the website. The established ANENT website features function as a database providing collected information, a link facilitating a systematic worldwide access to relevant websites, and an activity implementation for supporting the individual tasks of ANENT. The required information is being collected and loaded onto the database, and the website will be improved step by step. Consequently, networking is expected to play an important role, through cooperating with other networks, and thus contributing to a future global network for a sustainable development of nuclear technology. (author)

  13. A distributed software architecture design framework based on attributed grammar

    JIA Xiao-lin; QIN Zheng; HE Jian; YU Fan

    2005-01-01

    Software architectures shift the focus of developers from lines-of-code to coarser-grained architectural elements and their overall interconnection structure. There are, however, many features of the distributed software that make the developing methods of distributed software quite different from the traditional ways. Furthermore, the traditional centralized ways with fixed interfaces cannot adapt to the flexible requirements of distributed software. In this paper, the attributed grammar (AG) is extended to refine the characters of distributed software, and a distributed software architecture description language (DSADL) based on attributed grammar is introduced, and then a model of integrated environment for software architecture design is proposed. It can be demonstrated by the practice that DSADL can help the programmers to analyze and design distributed software effectively, so the efficiency of the development can be improved greatly.

  14. Conception Innovation Design System Based on PDM Framework

    TANWu-zheng; MALi-zhuang; ZHAOMing-xi; XIAOShuang-jiu

    2004-01-01

    The system is based on the globally shared product model conforming to VRML Standard, and uses SmarTeam (PDM) system to integrate and encapsulate CAD, CAE and other application software for product development. The system takes sugarcane harvester, mobile telephone design analysis and evaluation as an example, and utilizes fuzzy evaluation principle to evaluate the design and simulation analysis results for decisions making. The platform provides a collaborative intelligent environment for the design of products, aiming at integrating people, process and data in the virtual product development. The multi-layered system architecture provides capability for KBM and conception innovation design process with a single unified data and process model so as to achieve true process streamlining and data integrity throughout the entire product development lifecycle, and hence improves enterprises efficiency.

  15. A Physics-Based Modeling Framework for Prognostic Studies

    Kulkarni, Chetan S.

    2014-01-01

    Prognostics and Health Management (PHM) methodologies have emerged as one of the key enablers for achieving efficient system level maintenance as part of a busy operations schedule, and lowering overall life cycle costs. PHM is also emerging as a high-priority issue in critical applications, where the focus is on conducting fundamental research in the field of integrated systems health management. The term diagnostics relates to the ability to detect and isolate faults or failures in a system. Prognostics on the other hand is the process of predicting health condition and remaining useful life based on current state, previous conditions and future operating conditions. PHM methods combine sensing, data collection, interpretation of environmental, operational, and performance related parameters to indicate systems health under its actual application conditions. The development of prognostics methodologies for the electronics field has become more important as more electrical systems are being used to replace traditional systems in several applications in the aeronautics, maritime, and automotive fields. The development of prognostics methods for electronics presents several challenges due to the great variety of components used in a system, a continuous development of new electronics technologies, and a general lack of understanding of how electronics fail. Similarly with electric unmanned aerial vehicles, electrichybrid cars, and commercial passenger aircraft, we are witnessing a drastic increase in the usage of batteries to power vehicles. However, for battery-powered vehicles to operate at maximum efficiency and reliability, it becomes crucial to both monitor battery health and performance and to predict end of discharge (EOD) and end of useful life (EOL) events. We develop an electrochemistry-based model of Li-ion batteries that capture the significant electrochemical processes, are computationally efficient, capture the effects of aging, and are of suitable

  16. A Framework for Effective User Interface Design for Web-Based Electronic Commerce Applications

    Justyna Burns

    2001-01-01

    Full Text Available Efficient delivery of relevant product information is increasingly becoming the central basis of competition between firms. The interface design represents the central component for successful information delivery to consumers. However, interface design for web-based information systems is probably more an art than a science at this point in time. Much research is needed to understand properties of an effective interface for electronic commerce. This paper develops a framework identifying the relationship between user factors, the role of the user interface and overall system success for web-based electronic commerce. The paper argues that web-based systems for electronic commerce have some similar properties to decision support systems (DSS and adapts an established DSS framework to the electronic commerce domain. Based on a limited amount of research studying web browser interface design, the framework identifies areas of research needed and outlines possible relationships between consumer characteristics, interface design attributes and measures of overall system success.

  17. Integrated Information Framework for Intelligent Cooperative Design Based on Multi-Agent System and XML

    Yan, Cao; Lina, Yang; Yanli, Yang; Hua, Chen

    2008-11-01

    To meet the requirements of distributed cooperation in various industries, the architecture of cooperative design based on multi-agent system on Internet is proposed by analyzing cooperative design pattern, and its key technologies, such as product developing process management, information management, and conflict resolution, are discussed. An integrated information framework of loosely coupling modules is proposed which supports concurrent work mode based on multi-agent system. Integrating Web service technique and agent technique into this framework can organize many cooperative members and their activities effectively though they are distributed at different places. Finally, system development mode based on Web is put forward.

  18. Developing Courses with Holorena, A Framework for Scenario- and Game Based E-Learning Environments

    Laszlo Juracz

    2010-10-01

    Full Text Available However utilizing rich, interactive solutions can make learning more effective and attractive, scenarioandgame-based educational resources on the web are not widely used. Creating these applications is acomplex, expensive and challenging process. Development frameworks and authoring tools hardlysupport reusable components, teamwork and learning management system-independent coursewarearchitecture. In this article we initiate the concept of a low-level, thick-client solution addressing theseproblems. With some example applications we try to demonstrate, how a framework, based on thisconcept can be useful for developing scenario- and game-based e-learning environments.

  19. Web-based networking within the framework of ANENT

    Recognizing the importance of nuclear knowledge management, KAERI has been actively involved in the establishment of the IAEA Asian Network for Higher Education in Nuclear Technology (ANENT). The institute, on behalf of the Korean government, initiated discussions with the IAEA on the concept of ANENT and hosted an IAEA Consultant Meeting in July 2003, which was intended to prepare a draft report for the establishment of ANENT. From the preparatory stage, the institute volunteered to establish a website to support the ANENT activities. This led the ANENT Coordination Committee, at its first meeting in April 2004, to designate KAERI as the coordinating organization for a work package on the 'Web-based Exchange of Information and Material for Nuclear Education and Training'. The committee also identified four more work packages and the respective coordinators at the same meeting. To implement the task of the web-based exchange, a website (www.anent-tepm.org) was designed with three functional objectives. The first function was to provide the ANENT member websites with a comprehensive connection with each other as well as to other sites relevant to nuclear education and training. The second one was to provide the collected information and materials. The last one was to provide a systematic and sustainable means to add, revise, and share the information and materials of high quality. As a result, the web site has been structured to deal with the overall information about ANENT, group activities (e.g. Coordination Committee meetings and work packages), inter-organization (or network) link, thematic information/materials database (or link), and the management of human resources. The ANENT website has been temporarily operated and is being revised to fulfil the objectives and reach a consensus among the ANENT members. In parallel, a set of information about education and training courses and teaching materials available from the network members is being collected, which

  20. Turbulent Simulations of Divertor Detachment Based On BOUT + + Framework

    Chen, Bin; Xu, Xueqiao; Xia, Tianyang; Ye, Minyou

    2015-11-01

    China Fusion Engineering Testing Reactor is under conceptual design, acting as a bridge between ITER and DEMO. The detached divertor operation offers great promise for a reduction of heat flux onto divertor target plates for acceptable erosion. Therefore, a density scan is performed via an increase of D2 gas puffing rates in the range of 0 . 0 ~ 5 . 0 ×1023s-1 by using the B2-Eirene/SOLPS 5.0 code package to study the heat flux control and impurity screening property. As the density increases, it shows a gradually change of the divertor operation status, from low-recycling regime to high-recycling regime and finally to detachment. Significant radiation loss inside the confined plasma in the divertor region during detachment leads to strong parallel density and temperature gradients. Based on the SOLPS simulations, BOUT + + simulations will be presented to investigate the stability and turbulent transport under divertor plasma detachment, particularly the strong parallel gradient driven instabilities and enhanced plasma turbulence to spread heat flux over larger surface areas. The correlation between outer mid-plane and divertor turbulence and the related transport will be analyzed. Prepared by LLNL under Contract DE-AC52-07NA27344. LLNL-ABS-675075.

  1. Minutiae Fusion Based Framework for Thumbprint Identification of Identical Twins

    Kamta Nath Mishra

    2013-12-01

    Full Text Available Identical twins identification is a challenging task because they share the same DNA sequence. This research paper presents minutiae coordinates and orientation angles fusion based technique for thumbprint identification of identical twins. Six different thumbprint images of identical twins were taken at a fixed time interval using H3 T&A terminal. The minutiae coordinates and orientation angles of these thumbprints were fused to form a union set. The union set values were stored in the smartcard memory for further identification. The minutiae coordinates and orientation angles of a thumbprint of the person to be identified are computed and fused together for online identification. The fused minutiae are compared with the minutiae union set values stored in the smartcard memory for identity verification. The proposed method was tested on a self generated identical twin dataset and 50 identical twins of standard FVC04 and FVC06 datasets. We observed in experiments that the proposed method is accurately differentiating the identical twins of self generated and FVC datasets.

  2. Towards a Framework for a Professional Development Programme: Empowering Teachers for Context-Based Chemistry Education

    Stolk, Machiel J.; Bulte, Astrid M. W.; de Jong, Onno; Pilot, Albert

    2009-01-01

    The aim of this study is to develop a framework for professional development programmes that empowers chemistry teachers to teach and design context-based chemistry curricula. Firstly, teachers' involvement, their concerns and their professional development in several context-based curriculum innovations is discussed. Secondly, to develop such a…

  3. Using the 4MAT Framework to Design a Problem-Based Learning Biostatistics Course

    Nowacki, Amy S.

    2011-01-01

    The study presents and applies the 4MAT theoretical framework to educational planning to transform a biostatistics course into a problem-based learning experience. Using a four-question approach, described are specific activities/materials utilized at both the class and course levels. Two web-based instruments collected data regarding student…

  4. Incorporating physically-based microstructures in materials modeling: Bridging phase field and crystal plasticity frameworks

    Lim, Hojun; Abdeljawad, Fadi; Owen, Steven J.; Hanks, Byron W.; Foulk, James W.; Battaile, Corbett C.

    2016-05-01

    The mechanical properties of materials systems are highly influenced by various features at the microstructural level. The ability to capture these heterogeneities and incorporate them into continuum-scale frameworks of the deformation behavior is considered a key step in the development of complex non-local models of failure. In this study, we present a modeling framework that incorporates physically-based realizations of polycrystalline aggregates from a phase field (PF) model into a crystal plasticity finite element (CP-FE) framework. Simulated annealing via the PF model yields ensembles of materials microstructures with various grain sizes and shapes. With the aid of a novel FE meshing technique, FE discretizations of these microstructures are generated, where several key features, such as conformity to interfaces, and triple junction angles, are preserved. The discretizations are then used in the CP-FE framework to simulate the mechanical response of polycrystalline α-iron. It is shown that the conformal discretization across interfaces reduces artificial stress localization commonly observed in non-conformal FE discretizations. The work presented herein is a first step towards incorporating physically-based microstructures in lieu of the overly simplified representations that are commonly used. In broader terms, the proposed framework provides future avenues to explore bridging models of materials processes, e.g. additive manufacturing and microstructure evolution of multi-phase multi-component systems, into continuum-scale frameworks of the mechanical properties.

  5. MHDFS: A Memory-Based Hadoop Framework for Large Data Storage

    Aibo Song

    2016-01-01

    Full Text Available Hadoop distributed file system (HDFS is undoubtedly the most popular framework for storing and processing large amount of data on clusters of machines. Although a plethora of practices have been proposed for improving the processing efficiency and resource utilization, traditional HDFS still suffers from the overhead of disk-based low throughput and I/O rate. In this paper, we attempt to address this problem by developing a memory-based Hadoop framework called MHDFS. Firstly, a strategy for allocating and configuring reasonable memory resources for MHDFS is designed and RAMFS is utilized to develop the framework. Then, we propose a new method to handle the data replacement to disk when memory resource is excessively occupied. An algorithm for estimating and updating the replacement is designed based on the metrics of file heat. Finally, substantial experiments are conducted which demonstrate the effectiveness of MHDFS and its advantage against conventional HDFS.

  6. An Uncertainty Quantification Framework for Prognostics and Condition-Based Monitoring

    Sankararaman, Shankar; Goebel, Kai

    2014-01-01

    This paper presents a computational framework for uncertainty quantification in prognostics in the context of condition-based monitoring of aerospace systems. The different sources of uncertainty and the various uncertainty quantification activities in condition-based prognostics are outlined in detail, and it is demonstrated that the Bayesian subjective approach is suitable for interpreting uncertainty in online monitoring. A state-space model-based framework for prognostics, that can rigorously account for the various sources of uncertainty, is presented. Prognostics consists of two important steps. First, the state of the system is estimated using Bayesian tracking, and then, the future states of the system are predicted until failure, thereby computing the remaining useful life of the system. The proposed framework is illustrated using the power system of a planetary rover test-bed, which is being developed and studied at NASA Ames Research Center.

  7. The EU as an actor at the WTO: its strengths and weaknesses throughout history

    Rosana GARCIANDÍA GARMENDIA

    2012-06-01

    Full Text Available During the last decade, many reforms took place in the European Union legal and policy framework. Some of those reforms were motivated by the participation of the European Union and its member States in the World Trade Organization. This paper aims to analyze the role of the European Union as an actor in that organization, paying special attention to its mixed legal nature – EU and Member States. With that purpose, the evolution of the relationship between the EU member States and the EU itself as simultaneous actors at the WTO is studied. The division of competences is also reviewed. Finally, the analysis of the EU position in different negotiation rounds (Uruguay, Doha for the agricultural sector is reviewed as an example of the evolution in the protection of European interests. The paper shows that some changes in the Treaty of Lisbon have strengthened the legal framework for the EU to be heard with a unique voice in the WTO

  8. Managing the interface - An approach through the complexity of the collaborative process of design, integration and realization: a transactional model of the interface actor and dynamics of exchange spaces

    In large projects such as particle accelerators or detectors, interfaces and boundaries reveal themselves to be both critical and underestimated. The technical manager, an actor among others, finds himself placed at network nodes where he must set up exchanges spaces in order to generate collaborative behaviours. Starting with case studies from the field of CERN, the thesis follows three principles based on the dia-logical, the hologramic and the self-eco-organization principles, as expanded in the writings on complexity. It puts forward an original methodological matrix construction leading to a transactional model of the interface actor. The collaborative exchanges spaces builds itself as a place for the dynamic transformation of the interface actor into a boundary actor. Intermediate objects, created during the design / integration process, are simultaneously transformed into boundary objects. They are instrumental in the realization of the product: this takes place in the framework of the project which has been determined through a recursive process. The interest generated by such a global and combined approach of this dynamic process leads to the proposal of a 'hyper-compass', with the aim of providing the means for the technical manager to orient his 'acting ↔ thinking'. (author)

  9. Actores sociales y ambitos de construccion de politicas ambientales Social actors and scenarios in the generation of environmental politics

    Eduardo Gudynas

    2001-01-01

    Se analiza el concepto de "actores claves" en la generación de políticas ambientales. Independientemente de la definición de actor social que se maneje, el asumir la existencia de actores claves ofrece limitaciones conceptuales y prácticas, ya que éstos son coyunturales a cada situación específica. Todos pueden ser actores claves en generar políticas ambientales cumpliendo papeles diferenciales. Como alternativa se utiliza el término de "actores destacados" y se revisan aspectos sobresaliente...

  10. Bifunctional Organic Polymeric Catalysts with a Tunable Acid-Base Distance and Framework Flexibility

    Chen, Huanhui; Wang, Yanan; Wang, Qunlong; Li, Junhui; Yang, Shiqi; Zhu, Zhirong

    2014-09-01

    Acid-base bifunctional organic polymeric catalysts were synthesized with tunable structures. we demonstrated two synthesis approaches for structural fine-tune. In the first case, the framework flexibility was tuned by changing the ratio of rigid blocks to flexible blocks within the polymer framework. In the second case, we precisely adjusted the acid-base distance by distributing basic monomers to be adjacent to acidic monomers, and by changing the chain length of acidic monomers. In a standard test reaction for the aldol condensation of 4-nitrobenzaldehyde with acetone, the catalysts showed good reusability upon recycling and maintained relatively high conversion percentage.

  11. Towards a Component Framework for Architecture-Based Self-Adaptive Applications

    ZHOU Yu; MA Xiaoxing; TAO Xianping; LU Jian

    2006-01-01

    Self-adaptive software is an efficient way to cope with highly dynamic nature of the environment where it is situated. In this paper, from the perspective of software architecture, we propose a component framework for supporting the architecture-based design and development of self-adaptive applications. It captures some key elements of the research on software architecture and provides more flexible facilities to decouple interacting components. Based on that, a prototype is implemented to demonstrate its feasibility, and at last a case study is presented to illustrate our framework.

  12. Providing a framework to improve the performance of business process management projects based on BPMN

    Mojtaba Ahmadi

    2016-01-01

    Full Text Available Modeling of business processes, based on Business Process Modeling Notation (BPMN, helps analysts and managers to understand business processes, and, identify their shortages. These models provide a context to make rational decision of organizing business processes activities in an understandable manner. The purpose of this paper is to provide a framework for better understanding of business processes and their problems by reducing the cognitive load of displayed information for their audience at different managerial levels while keeping the essential information which are needed by them. For this reason, we integrate business process diagrams across the different managerial levels to develop a framework to improve the performance of business process management (BPM projects. This framework, which is referred to as “Business Process Improvement Framework Based on Managerial Levels (BPIML” in this paper, considers three levels of management (Organizational level managers, Process /Departmental level managers and Activity level managers for manager of an organization. Then, defines certain types of models based on BPMN, for each management level, by taking into the account the objectives and tasks of various managerial levels in organizations and their role in Business Process Management (BPM projects. This framework will make us able to provide the necessary support for making decisions about business processes. The framework is evaluated with a case study in a real business process improvement project, to demonstrate its superiority over the conventional method. A questionnaire consisted of 10 questions using Likert scale was designed and given to the participants (three managerial levels. The results of this questionnaire suggested that, managers and senior experts of the organization considered utilization of the proposed framework improving for implementation of BPM projects and provide support for correct and timely decisions by

  13. Diásporas y transiciones en la Teoría del Actor-Red Diasporas and transitions in Actor-Network Theory

    Blanca Callén

    2011-03-01

    Full Text Available Este texto es una presentación del monográfico Diásporas y transiciones en la teoría del actor-red. Sus páginas presentan las principales características de esta teoría, una manera de entender sus orígenes y una descripción de su presente estableciendo un paralelismo con la etnometodología. El texto finaliza con una valoración del estado de la teoría del actor-red en España y un comentario sobre un congreso que llevó el título de Presente y futuro de la teoría del actor-red y que constituye el embrión del presente monográfico. En el texto se defiende una tesis muy simple: la teoría del actor-red nace con cierta relevancia para el pensamiento social en el momento en que se difracta en una miríada de usos y aplicaciones diferentes. El principal corolario de este hecho también es muy sencillo: la gran diferencia entre la teoría del actor-red y otras propuestas del pensamiento social es su permanente estado de diáspora y transición.
    This paper is an introduction to the monograph titled Diasporas and Transitions in the Actor-Network Theory. Drawing a parallel with ethnomethodology, its pages present the main features of this theory, a way to figure out its origins and a description of its present. The text ends with a brief look at the state of art of actor-network theory in Spain and an appraisal of a meeting titled Present and Future of Actor-Network Theory, which is the origin of our monograph. In this paper we put forward a very simple idea: Actor-Network Theory was born with certain relevance in Social Sciences when it diffracted in a myriad of different uses and applications. The main corollary of such an idea is also straightforward: the very difference between Actor-Network Theory and other perspectives in Social Sciences resides in the permanent diaspora and transition of the former.

  14. Model-based reasoning in the physics laboratory: Framework and initial results

    Zwickl, Benjamin M.; Hu, Dehui; Finkelstein, Noah; Lewandowski, H. J.

    2015-12-01

    [This paper is part of the Focused Collection on Upper Division Physics Courses.] We review and extend existing frameworks on modeling to develop a new framework that describes model-based reasoning in introductory and upper-division physics laboratories. Constructing and using models are core scientific practices that have gained significant attention within K-12 and higher education. Although modeling is a broadly applicable process, within physics education, it has been preferentially applied to the iterative development of broadly applicable principles (e.g., Newton's laws of motion in introductory mechanics). A significant feature of the new framework is that measurement tools (in addition to the physical system being studied) are subjected to the process of modeling. Think-aloud interviews were used to refine the framework and demonstrate its utility by documenting examples of model-based reasoning in the laboratory. When applied to the think-aloud interviews, the framework captures and differentiates students' model-based reasoning and helps identify areas of future research. The interviews showed how students productively applied similar facets of modeling to the physical system and measurement tools: construction, prediction, interpretation of data, identification of model limitations, and revision. Finally, we document students' challenges in explicitly articulating assumptions when constructing models of experimental systems and further challenges in model construction due to students' insufficient prior conceptual understanding. A modeling perspective reframes many of the seemingly arbitrary technical details of measurement tools and apparatus as an opportunity for authentic and engaging scientific sense making.

  15. Integrated consensus-based frameworks for unmanned vehicle routing and targeting assignment

    Barnawi, Waleed T.

    Unmanned aerial vehicles (UAVs) are increasingly deployed in complex and dynamic environments to perform multiple tasks cooperatively with other UAVs that contribute to overarching mission effectiveness. Studies by the Department of Defense (DoD) indicate future operations may include anti-access/area-denial (A2AD) environments which limit human teleoperator decision-making and control. This research addresses the problem of decentralized vehicle re-routing and task reassignments through consensus-based UAV decision-making. An Integrated Consensus-Based Framework (ICF) is formulated as a solution to the combined single task assignment problem and vehicle routing problem. The multiple assignment and vehicle routing problem is solved with the Integrated Consensus-Based Bundle Framework (ICBF). The frameworks are hierarchically decomposed into two levels. The bottom layer utilizes the renowned Dijkstra's Algorithm. The top layer addresses task assignment with two methods. The single assignment approach is called the Caravan Auction Algorithm (CarA) Algorithm. This technique extends the Consensus-Based Auction Algorithm (CBAA) to provide awareness for task completion by agents and adopt abandoned tasks. The multiple assignment approach called the Caravan Auction Bundle Algorithm (CarAB) extends the Consensus-Based Bundle Algorithm (CBBA) by providing awareness for lost resources, prioritizing remaining tasks, and adopting abandoned tasks. Research questions are investigated regarding the novelty and performance of the proposed frameworks. Conclusions regarding the research questions will be provided through hypothesis testing. Monte Carlo simulations will provide evidence to support conclusions regarding the research hypotheses for the proposed frameworks. The approach provided in this research addresses current and future military operations for unmanned aerial vehicles. However, the general framework implied by the proposed research is adaptable to any unmanned

  16. iSAW: Integrating Structure, Actors, and Water to Study Socio-Hydro-Ecological Systems

    Hale, R.L.; Armstrong, A.; M. A. Baker; Bedingfield, S.; Betts, D.; Buahin, C.; Buchert, M.; Crowl, T.; Dupont, R. R.; Ehleringer, J. R.; Endter-Wada, Joanna; Flint, C.; Grant, J; Hinners, S.; Horsburgh, J. S.

    2015-01-01

    Urbanization, climate, and ecosystem change represent major challenges for managing water resources. Although water systems are complex, a need exists for a generalized representation of these systems to identify important components and linkages to guide scientific inquiry and aid water management. We developed an integrated Structure-Actor-Water framework (iSAW) to facilitate the understanding of and transitions to sustainable water systems. Our goal was to produce an interdisciplinary fram...

  17. The political ecology of hydropower development in Guatemala: Actors, power and spaces

    Hirsch, Cecilie Karina von

    2010-01-01

    In this study I analyse the human and environmental interactions in the hydropower sector in Guatemala, with en emphasis on actors, spaces and power relations, using a political ecology framework. The local and civil society agency and participation in decision making about hydropower development has been explored through the various invited, claimed, and transformed spaces. Guatemala is a relevant case because of its potential for hydropower development; it is also a country with a high perc...

  18. International Organizations as Corporate Actors: Agency and Emergence in Theories of International Relations

    Maier-Rigaud, Remi

    2008-01-01

    In this paper, the implicit and explicit conceptualizations of international organizations found in the three major theories of international relations are outlined and compared. It turns out that in a neorealist framework, international organizations can be explained; however, they exhibit no autonomy and cannot therefore be conceptualized as a corporate actor. Principally, the same applies to rational choice institutionalism, although limited autonomy is conceivable. Both theories are reduc...

  19. Generalized Optimization Framework for Graph-based Semi-supervised Learning

    Avrachenkov, Konstantin; Mishenin, Alexey; Sokol, Marina

    2011-01-01

    We develop a generalized optimization framework for graph-based semi-supervised learning. The framework gives as particular cases the Standard Laplacian, Normalized Laplacian and PageRank based methods. We have also provided new probabilistic interpretation based on random walks and characterized the limiting behaviour of the methods. The random walk based interpretation allows us to explain di erences between the performances of methods with di erent smoothing kernels. It appears that the PageRank based method is robust with respect to the choice of the regularization parameter and the labelled data. We illustrate our theoretical results with two realistic datasets, characterizing di erent challenges: Les Miserables characters social network and Wikipedia hyper-link graph. The graph-based semi-supervised learning classi- es the Wikipedia articles with very good precision and perfect recall employing only the information about the hyper-text links.

  20. Face Recognition from Still Images to Video Sequences: A Local-Feature-Based Framework

    Shaokang Chen; Sandra Mau; Harandi, Mehrtash T.; Conrad Sanderson; Abbas Bigdeli; Lovell, Brian C.

    2011-01-01

    Although automatic faces recognition has shown success for high-quality images under controlled conditions, for video-based recognition it is hard to attain similar levels of performance. We describe in this paper recent advances in a project being undertaken to trial and develop advanced surveillance systems for public safety. In this paper, we propose a local facial feature based framework for both still image and video-based face recognition. The evaluation is performed on a still image d...

  1. A Multisector Framework for Assessing Community-Based Forest Management: Lessons from Madagascar

    Daniel J. Decker

    2007-06-01

    Full Text Available Community-based forest management has proliferated throughout Africa as national governments have decentralized the administration of public forestry. Community-based forestry has taken multiple forms, depending on the assortment of land-tenure systems, forest-use norms, wood demand, and social organization, among others factors. Nature, Wealth, and Power is an analytical framework that has been developed from experiences in natural resource management in Africa. In this paper, we amend the framework to People, Nature, Wealth, and Power (PNWP, and propose it as an analytical lens for community-based forest management initiatives. We use the PNWP framework to assess the responsiveness of contractual forest management in the Menabe region of Madagascar to the interests of local communities, the state forest agency, and conservation nongovernmental organizations. Findings indicate that members of each of the three groups hold some differing interests, which may result in conflict over time. Specifically, interests converge around the Nature and Wealth categories and diverge around the People and Power categories. Also, the contract mechanism for community-based forest management currently being implemented in Menabe does not account for the People and Wealth interests held by any of the three groups. More research is needed, but our inquiry indicates the PNWP framework holds promise for assessing community-based forest management initiatives.

  2. Modeling and simulation of complex systems a framework for efficient agent-based modeling and simulation

    Siegfried, Robert

    2014-01-01

    Robert Siegfried presents a framework for efficient agent-based modeling and simulation of complex systems. He compares different approaches for describing structure and dynamics of agent-based models in detail. Based on this evaluation the author introduces the "General Reference Model for Agent-based Modeling and Simulation" (GRAMS). Furthermore he presents parallel and distributed simulation approaches for execution of agent-based models -from small scale to very large scale. The author shows how agent-based models may be executed by different simulation engines that utilize underlying hard

  3. Strategic Environmental Assessment Framework for Landscape-Based, Temporal Analysis of Wetland Change in Urban Environments

    Sizo, Anton; Noble, Bram F.; Bell, Scott

    2016-03-01

    This paper presents and demonstrates a spatial framework for the application of strategic environmental assessment (SEA) in the context of change analysis for urban wetland environments. The proposed framework is focused on two key stages of the SEA process: scoping and environmental baseline assessment. These stages are arguably the most information-intense phases of SEA and have a significant effect on the quality of the SEA results. The study aims to meet the needs for proactive frameworks to assess and protect wetland habitat and services more efficiently, toward the goal of advancing more intelligent urban planning and development design. The proposed framework, adopting geographic information system and remote sensing tools and applications, supports the temporal evaluation of wetland change and sustainability assessment based on landscape indicator analysis. The framework was applied to a rapidly developing urban environment in the City of Saskatoon, Saskatchewan, Canada, analyzing wetland change and land-use pressures from 1985 to 2011. The SEA spatial scale was rescaled from administrative urban planning units to an ecologically meaningful area. Landscape change assessed was based on a suite of indicators that were subsequently rolled up into a single, multi-dimensional, and easy to understand and communicate index to examine the implications of land-use change for wetland sustainability. The results show that despite the recent extremely wet period in the Canadian prairie region, land-use change contributed to increasing threats to wetland sustainability.

  4. Harm reduction as a complex adaptive system: A dynamic framework for analyzing Tanzanian policies concerning heroin use.

    Ratliff, Eric A; Kaduri, Pamela; Masao, Frank; Mbwambo, Jessie K K; McCurdy, Sheryl A

    2016-04-01

    Contrary to popular belief, policies on drug use are not always based on scientific evidence or composed in a rational manner. Rather, decisions concerning drug policies reflect the negotiation of actors' ambitions, values, and facts as they organize in different ways around the perceived problems associated with illicit drug use. Drug policy is thus best represented as a complex adaptive system (CAS) that is dynamic, self-organizing, and coevolving. In this analysis, we use a CAS framework to examine how harm reduction emerged around heroin trafficking and use in Tanzania over the past thirty years (1985-present). This account is an organizational ethnography based on of the observant participation of the authors as actors within this system. We review the dynamic history and self-organizing nature of harm reduction, noting how interactions among system actors and components have coevolved with patterns of heroin us, policing, and treatment activities over time. Using a CAS framework, we describe harm reduction as a complex process where ambitions, values, facts, and technologies interact in the Tanzanian sociopolitical environment. We review the dynamic history and self-organizing nature of heroin policies, noting how the interactions within and between competing prohibitionist and harm reduction policies have changed with patterns of heroin use, policing, and treatment activities over time. Actors learn from their experiences to organize with other actors, align their values and facts, and implement new policies. Using a CAS approach provides researchers and policy actors a better understanding of patterns and intricacies in drug policy. This knowledge of how the system works can help improve the policy process through adaptive action to introduce new actors, different ideas, and avenues for communication into the system. PMID:26790689

  5. A Framework for Analysing Textbooks Based on the Notion of Abstraction

    Yang, Kai-Lin

    2013-01-01

    Abstraction is a key adaptive mechanism of human cognition and an essential process in the personal construction of mathematical knowledge. Based on the notion of abstraction, this paper aims to conceptualise a framework for analysing textbooks. First, I search for the meaning of abstraction from a constructive-empirical and a dialectic…

  6. A general simulation model developing process based on five-object framework

    胡安斌; 伞冶; 陈建明; 陈永强

    2003-01-01

    Different paradigms that relate verification and validation to the simulation model have different development process. A simulation model developing process based on Five-Object Framework (FOF) is discussed in this paper. An example is given to demonstrate the applications of the proposed method.

  7. Evaluating a Professional Development Framework to Empower Chemistry Teachers to Design Context-Based Education

    Stolk, M.J.; Bulte, A.M.W.; de Jong, O.; Pilot, A.

    2012-01-01

    Even experienced chemistry teachers require professional development when they are encouraged to become actively engaged in the design of new context-based education. This study briefly describes the development of a framework consisting of goals, learning phases, strategies and instructional functi

  8. Like peanut butter and chocolate: Problem-based learning and the ACRL Framework in medical education

    Vukas, Rachel; Collins, Heather; Yankee, Thomas

    2016-01-01

    Problem-based learning (PBL) offers a rich context for teaching using the Framework. This pairing requires planning in order to interprofessionally infuse faculty knowledge content with information literacy expertise. Explore the foundations of PBLs and a method to directly teach practical and efficient research strategies while also addressing evaluative critical thinking processes.

  9. The Person over Standardisation: A Humanistic Framework for Teacher Learning in Diverse School-Based Contexts

    Kazanjian, Christopher J.; Choi, Su-Jin

    2016-01-01

    This paper argues that the purpose of education is to help students realise their unique potentials and pursue inner directions. With this assumption, we critique the inadequacy of the current emphasis on standardisation and provide a theoretical framework for teacher education based on humanistic psychology. Three tenets of humanistic psychology,…

  10. iMASKO: A Genetic Algorithm Based Optimization Framework for Wireless Sensor Networks

    Nanhao Zhu

    2013-10-01

    Full Text Available In this paper we present the design and implementation of a generic GA-based optimization framework iMASKO (iNL@MATLAB Genetic Algorithm-based Sensor NetworK Optimizer to optimize the performance metrics of wireless sensor networks. Due to the global search property of genetic algorithms, the framework is able to automatically and quickly fine tune hundreds of possible solutions for the given task to find the best suitable tradeoff. We test and evaluate the framework by using it to explore a SystemC-based simulation process to tune the configuration of the unslotted CSMA/CA algorithm of IEEE 802.15.4, aiming to discover the most available tradeoff solutions for the required performance metrics. In particular, in the test cases different sensor node platforms are under investigation. A weighted sum based cost function is used to measure the optimization effectiveness and capability of the framework. In the meantime, another experiment is performed to test the framework’s optimization characteristic in multi-scenario and multi-objectives conditions.

  11. A Framework Relating Outcomes Based Education and the Taxonomy of Educational Objectives.

    Andrich, David

    2002-01-01

    Articulates a framework that can place the Outcomes Based Education movement in a historical context and by so doing advance its discourse on assessment. Reviews the development and structure of the Taxonomy of Educational Objectives (B. Bloom et al., 1956) and the structure of Student Outcome Statements in Western Australia and explores the…

  12. Diffusion of the National Qualifications Framework and Outcomes-Based Education in Southern and Eastern Africa

    Chisholm, Linda

    2007-01-01

    This article explores policy and curriculum diffusion in southern and eastern Africa through an examination of the National Qualifications Framework (NQF) and outcomes-based education. The article argues that the NQF was adopted for different reasons in different contexts, but that discourse coalitions and conferences have been critical in…

  13. Applying a Constructivist-Developmental Practice-Based Learning Framework to the Recreation Internship Experience

    Craig, Patricia J.; Sable, Janet R.

    2011-01-01

    The recreation internship is one of the most critical components of professional preparation education, yet educators have done little to explore the experience from a constructivist-developmental growth perspective. This article presents a practice-based learning framework that shows promise for fostering moral development among recreation…

  14. An Old Chestnut Revisited: Teachers' Opinions and Attitudes toward Grading within a Competency Based Training Framework

    Richards, James

    2014-01-01

    The purpose of this study was to explore teachers' opinions with regard to the value and process of grading within a competency based training (CBT) framework, following the introduction of a formalised grading system at a specialist Technical and Further Education centre for hospitality and tourism training The data were gathered using a 16-item…

  15. An energy estimation framework for event-based methods in Non-Intrusive Load Monitoring

    Highlights: • Energy estimation is NILM has not yet accounted for complexity of appliance models. • We present a data-driven framework for appliance modeling in supervised NILM. • We test the framework on 3 houses and report average accuracies of 5.9–22.4%. • Appliance models facilitate the estimation of energy consumed by the appliance. - Abstract: Non-Intrusive Load Monitoring (NILM) is a set of techniques used to estimate the electricity consumed by individual appliances in a building from measurements of the total electrical consumption. Most commonly, NILM works by first attributing any significant change in the total power consumption (also known as an event) to a specific load and subsequently using these attributions (i.e. the labels for the events) to estimate energy for each load. For this last step, most published work in the field makes simplifying assumptions to make the problem more tractable. In this paper, we present a framework for creating appliance models based on classification labels and aggregate power measurements that can help to relax many of these assumptions. Our framework automatically builds models for appliances to perform energy estimation. The model relies on feature extraction, clustering via affinity propagation, perturbation of extracted states to ensure that they mimic appliance behavior, creation of finite state models, correction of any errors in classification that might violate the model, and estimation of energy based on corrected labels. We evaluate our framework on 3 houses from standard datasets in the field and show that the framework can learn data-driven models based on event labels and use that to estimate energy with lower error margins (e.g., 1.1–42.3%) than when using the heuristic models used by others

  16. Analysing task design and students' responses to context-based problems through different analytical frameworks

    Broman, Karolina; Bernholt, Sascha; Parchmann, Ilka

    2015-05-01

    Background:Context-based learning approaches are used to enhance students' interest in, and knowledge about, science. According to different empirical studies, students' interest is improved by applying these more non-conventional approaches, while effects on learning outcomes are less coherent. Hence, further insights are needed into the structure of context-based problems in comparison to traditional problems, and into students' problem-solving strategies. Therefore, a suitable framework is necessary, both for the analysis of tasks and strategies. Purpose:The aim of this paper is to explore traditional and context-based tasks as well as students' responses to exemplary tasks to identify a suitable framework for future design and analyses of context-based problems. The paper discusses different established frameworks and applies the Higher-Order Cognitive Skills/Lower-Order Cognitive Skills (HOCS/LOCS) taxonomy and the Model of Hierarchical Complexity in Chemistry (MHC-C) to analyse traditional tasks and students' responses. Sample:Upper secondary students (n=236) at the Natural Science Programme, i.e. possible future scientists, are investigated to explore learning outcomes when they solve chemistry tasks, both more conventional as well as context-based chemistry problems. Design and methods:A typical chemistry examination test has been analysed, first the test items in themselves (n=36), and thereafter 236 students' responses to one representative context-based problem. Content analysis using HOCS/LOCS and MHC-C frameworks has been applied to analyse both quantitative and qualitative data, allowing us to describe different problem-solving strategies. Results:The empirical results show that both frameworks are suitable to identify students' strategies, mainly focusing on recall of memorized facts when solving chemistry test items. Almost all test items were also assessing lower order thinking. The combination of frameworks with the chemistry syllabus has been

  17. A framework for simulating ultrasound imaging based on first order nonlinear pressure–velocity relations

    Du, Yigang; Fan, Rui; Li, Yong;

    2016-01-01

    An ultrasound imaging framework modeled with the first order nonlinear pressure–velocity relations (NPVR) based simulation and implemented by a half-time staggered solution and pseudospectral method is presented in this paper. The framework is capable of simulating linear and nonlinear ultrasound...... ultrasound image can be obtained by beamforming the simulated channel data. Various results simulated by different algorithms are illustrated for comparisons. The root mean square (RMS) errors for each compared pulses are calculated. The linear propagation is validated by an angular spectrum approach (ASA...

  18. Incorporating Domain Knowledge into Data Mining Process: An Ontology Based Framework

    2006-01-01

    With the explosive growth of data available, there is an urgent need to develop continuous data mining which reduces manual interaction evidently. A novel model for data mining is proposed in evolving environment. First, some valid mining task schedules are generated, and then autonomous and local mining are executed periodically, finally, previous results are merged and refined. The framework based on the model creates a communication mechanism to incorporate domain knowledge into continuous process through ontology service. The local and merge mining are transparent to the end user and heterogeneous data source by ontology. Experiments suggest that the framework should be useful in guiding the continuous mining process.

  19. Comparison of Physics Frameworks for WebGL-Based Game Engine

    Yogya Resa; Kosala Raymond

    2014-01-01

    Recently, a new technology called WebGL shows a lot of potentials for developing games. However since this technology is still new, there are still many potentials in the game development area that are not explored yet. This paper tries to uncover the potential of integrating physics frameworks with WebGL technology in a game engine for developing 2D or 3D games. Specifically we integrated three open source physics frameworks: Bullet, Cannon, and JigLib into a WebGL-based game engine. Using e...

  20. Hierarchical Downlink Resource Management Framework for OFDMA based WiMAX Systems

    Wang, Hua; Iversen, Villy Bæk

    2008-01-01

    IEEE 802.16, known as WiMAX, has received much attention for its capability to support multiple types of applications with diverse QoS requirements. Beyond what the standard has defined, radio resource management (RRM) still remains an open issue. In this paper, we propose a hierarchical downlink...... resource management framework for OFDMA based WiMAX systems. Our framework consists of a dynamic resource allocation (DRA) module and a connection admission control (CAC) module. DRA emphasizes on how to share the limited radio resources in term of subchannels and time slots among WiMAX subscribers...

  1. EBBSC: A Balanced Scorecard-Based Framework for Strategic E-Business Management

    Fen Wang; Guisseppi Forgionne

    2007-01-01

    E-business is far more about strategy than technology, and the strategy of e-business is very important in today’s dynamic and competitive environment. In this article, we describe a balanced scorecard-based framework in detail and discuss its potential e-business uses. This framework enables e-business managers to plan and allocate resources more effectively and align strategic objectives with performance results. It also provides a stable point of reference for e-businesses to understand ...

  2. Study of component-ware & application software framework based decision support system development

    He Shengping; Qin Zheng; Wang Xianghua

    2005-01-01

    The view that the traditional method of DSS development is outdated, which results to the diversiform disadvantages of DSS product. Therefore the ideas of application software framework based development to the generation process of DSS is introduced and a modified flow chat of DSS development is proposed. Moreover, a formal description of the DSS software framework and its development is given. The analysis results indicates that not only does the new development flow ensure the DSS development global stability but also improves the software reusability level of the development process.

  3. Breaking and Fixing Origin-Based Access Control in Hybrid Web/Mobile Application Frameworks.

    Georgiev, Martin; Jana, Suman; Shmatikov, Vitaly

    2014-02-01

    Hybrid mobile applications (apps) combine the features of Web applications and "native" mobile apps. Like Web applications, they are implemented in portable, platform-independent languages such as HTML and JavaScript. Like native apps, they have direct access to local device resources-file system, location, camera, contacts, etc. Hybrid apps are typically developed using hybrid application frameworks such as PhoneGap. The purpose of the framework is twofold. First, it provides an embedded Web browser (for example, WebView on Android) that executes the app's Web code. Second, it supplies "bridges" that allow Web code to escape the browser and access local resources on the device. We analyze the software stack created by hybrid frameworks and demonstrate that it does not properly compose the access-control policies governing Web code and local code, respectively. Web code is governed by the same origin policy, whereas local code is governed by the access-control policy of the operating system (for example, user-granted permissions in Android). The bridges added by the framework to the browser have the same local access rights as the entire application, but are not correctly protected by the same origin policy. This opens the door to fracking attacks, which allow foreign-origin Web content included into a hybrid app (e.g., ads confined in iframes) to drill through the layers and directly access device resources. Fracking vulnerabilities are generic: they affect all hybrid frameworks, all embedded Web browsers, all bridge mechanisms, and all platforms on which these frameworks are deployed. We study the prevalence of fracking vulnerabilities in free Android apps based on the PhoneGap framework. Each vulnerability exposes sensitive local resources-the ability to read and write contacts list, local files, etc.-to dozens of potentially malicious Web domains. We also analyze the defenses deployed by hybrid frameworks to prevent resource access by foreign-origin Web content

  4. An Ensemble 4D Seismic History Matching Framework with Sparse Representation Based on Wavelet Multiresolution Analysis

    Luo, Xiaodong; Jakobsen, Morten; Nævdal, Geir

    2016-01-01

    In this work we propose an ensemble 4D seismic history matching framework for reservoir characterization. Compared to similar existing frameworks in reservoir engineering community, the proposed one consists of some relatively new ingredients, in terms of the type of seismic data in choice, wavelet multiresolution analysis for the chosen seismic data and related data noise estimation, and the use of recently developed iterative ensemble history matching algorithms. Typical seismic data used for history matching, such as acoustic impedance, are inverted quantities, whereas extra uncertainties may arise during the inversion processes. In the proposed framework we avoid such intermediate inversion processes. In addition, we also adopt wavelet-based sparse representation to reduce data size. Concretely, we use intercept and gradient attributes derived from amplitude versus angle (AVA) data, apply multilevel discrete wavelet transforms (DWT) to attribute data, and estimate noise level of resulting wavelet coeffici...

  5. MaGe - a Geant4-based Monte Carlo framework for low-background experiments

    Chan, Yuen-Dat; Henning, Reyco; Gehman, Victor M; Johnson, Rob A; Jordan, David V; Kazkaz, Kareem; Knapp, Markus; Kroninger, Kevin; Lenz, Daniel; Liu, Jing; Liu, Xiang; Marino, Michael G; Mokhtarani, Akbar; Pandola, Luciano; Schubert, Alexis G; Tomei, Claudia

    2008-01-01

    A Monte Carlo framework, MaGe, has been developed based on the Geant4 simulation toolkit. Its purpose is to simulate physics processes in low-energy and low-background radiation detectors, specifically for the Majorana and Gerda $^{76}$Ge neutrinoless double-beta decay experiments. This jointly-developed tool is also used to verify the simulation of physics processes relevant to other low-background experiments in Geant4. The MaGe framework contains simulations of prototype experiments and test stands, and is easily extended to incorporate new geometries and configurations while still using the same verified physics processes, tunings, and code framework. This reduces duplication of efforts and improves the robustness of and confidence in the simulation output.

  6. Statistical framework for detection of genetically modified organisms based on Next Generation Sequencing.

    Willems, Sander; Fraiture, Marie-Alice; Deforce, Dieter; De Keersmaecker, Sigrid C J; De Loose, Marc; Ruttink, Tom; Herman, Philippe; Van Nieuwerburgh, Filip; Roosens, Nancy

    2016-02-01

    Because the number and diversity of genetically modified (GM) crops has significantly increased, their analysis based on real-time PCR (qPCR) methods is becoming increasingly complex and laborious. While several pioneers already investigated Next Generation Sequencing (NGS) as an alternative to qPCR, its practical use has not been assessed for routine analysis. In this study a statistical framework was developed to predict the number of NGS reads needed to detect transgene sequences, to prove their integration into the host genome and to identify the specific transgene event in a sample with known composition. This framework was validated by applying it to experimental data from food matrices composed of pure GM rice, processed GM rice (noodles) or a 10% GM/non-GM rice mixture, revealing some influential factors. Finally, feasibility of NGS for routine analysis of GM crops was investigated by applying the framework to samples commonly encountered in routine analysis of GM crops. PMID:26304412

  7. A Framework for Incorporating Model-Based Inquiry into Physics Laboratory Courses

    Zwickl, Benjamin M; Lewandowski, H J

    2013-01-01

    In an effort to align lab curricula with recent calls for increasing students' engagement with scientific practices important for research, we present a pedagogical approach for developing or redesigning labs using existing equipment in order to accomplish this goal. In the context of a polarization of light lab, we give examples of how these principles were used to transform a classic optics experiment with familiar apparatus. We also provide specific examples of lab guide questions and student work. Based on a review of the literature, examples from professional research, and interviews with leading experimentalists, we introduce a framework for including scientific modeling practices (including quantitative reasoning) into undergraduate laboratories. This framework was used to redesign a polarization of light lab to include modeling using the Jones matrix formalism and standard optics equipment such as lasers, polarization optics, and photodetectors; however, the framework and pedagogical approach is desig...

  8. A Framework for Building an Interactive Satellite TV Based M-Learning Environment

    Ghassan Issa

    2010-07-01

    Full Text Available This paper presents a description of an interactive satellite TV based mobile learning (STV-ML framework, in which a satellite TV station is used as an integral part of a comprehensive interactive mobile learning (M-Learning environment. The proposed framework assists in building a reliable, efficient, and cost-effective environment to meet the growing demands of M-Learning all over the world, especially in developing countries. It utilizes recent advances in satellite reception, broadcasting technologies, and interactive TV to facilitate the delivery of gigantic learning materials. This paper also proposed a simple and flexible three-phase implementation methodology which includes construction of earth station, expansion of broadcasting channels, and developing true user interactivity. The proposed framework and implementation methodology ensure the construction of a true, reliable, and cost effective M-Learning system that can be used efficiently and effectively by a wide range of users and educational institutions to deliver ubiquitous learning.

  9. A Framework for Performing Verification and Validation in Reuse Based Software Engineering

    Addy, Edward A.

    1997-01-01

    Verification and Validation (V&V) is currently performed during application development for many systems, especially safety-critical and mission- critical systems. The V&V process is intended to discover errors, especially errors related to critical processing, as early as possible during the development process. The system application provides the context under which the software artifacts are validated. This paper describes a framework that extends V&V from an individual application system to a product line of systems that are developed within an architecture-based software engineering environment. This framework includes the activities of traditional application-level V&V, and extends these activities into domain engineering and into the transition between domain engineering and application engineering. The framework includes descriptions of the types of activities to be performed during each of the life-cycle phases, and provides motivation for the activities.

  10. oodOPT: A Semantics-Based Concurrency Control Framework for Fully-Replicated Architecture

    YANG Guangxin; SHI Meilin

    2001-01-01

    Concurrency control has always been one of the most important issues in the design of synchronous groupware systems with fully-replicated architecture. An ideal strategy should be able to support natural and flexible human-to-computer and human-to-human interactions while maintaining the consistency of the system. This paper summarizes previous researches on this topic and points out the deficiencies of the existing results. A novel semantics-based concurrency control framework, oodOPT, is proposed. The main idea of the framework is to resolve conflicts by utilizing semantics of the operations and the accessed data objects. With this approach, complexities in concurrency control are shifted completely from application developers to the framework. Conflicts among operations on objects with different semantics and the strategies resolving these conflicts are analyzed. After describing the algorithm in full detail, the discussion ends up with a comparison with other related work and some considerations for open problems.

  11. Toward a More Flexible Web-Based Framework for Multidisciplinary Design

    Rogers, J. L.; Salas, A. O.

    1999-01-01

    In today's competitive environment, both industry and government agencies are under pressure to reduce the time and cost of multidisciplinary design projects. New tools have been introduced to assist in this process by facilitating the integration of and communication among diverse disciplinary codes. One such tool, a framework for multidisciplinary design, is defined as a hardware-software architecture that enables integration, execution, and communication among diverse disciplinary processes. An examination of current frameworks reveals weaknesses in various areas, such as sequencing, monitoring, controlling, and displaying the design process. The objective of this research is to explore how Web technology can improve these areas of weakness and lead toward a more flexible framework. This article describes a Web-based system that optimizes and controls the execution sequence of design processes in addition to monitoring the project status and displaying the design results.

  12. OpenARC: Extensible OpenACC Compiler Framework for Directive-Based Accelerator Programming Study

    Lee, Seyong [ORNL; Vetter, Jeffrey S [ORNL

    2014-01-01

    Directive-based, accelerator programming models such as OpenACC have arisen as an alternative solution to program emerging Scalable Heterogeneous Computing (SHC) platforms. However, the increased complexity in the SHC systems incurs several challenges in terms of portability and productivity. This paper presents an open-sourced OpenACC compiler, called OpenARC, which serves as an extensible research framework to address those issues in the directive-based accelerator programming. This paper explains important design strategies and key compiler transformation techniques needed to implement the reference OpenACC compiler. Moreover, this paper demonstrates the efficacy of OpenARC as a research framework for directive-based programming study, by proposing and implementing OpenACC extensions in the OpenARC framework to 1) support hybrid programming of the unified memory and separate memory and 2) exploit architecture-specific features in an abstract manner. Porting thirteen standard OpenACC programs and three extended OpenACC programs to CUDA GPUs shows that OpenARC performs similarly to a commercial OpenACC compiler, while it serves as a high-level research framework.

  13. Implementing evidence-based interventions in health care: application of the replicating effective programs framework

    Pincus Harold A

    2007-12-01

    Full Text Available Abstract Background We describe the use of a conceptual framework and implementation protocol to prepare effective health services interventions for implementation in community-based (i.e., non-academic-affiliated settings. Methods The framework is based on the experiences of the U.S. Centers for Disease Control and Prevention (CDC Replicating Effective Programs (REP project, which has been at the forefront of developing systematic and effective strategies to prepare HIV interventions for dissemination. This article describes the REP framework, and how it can be applied to implement clinical and health services interventions in community-based organizations. Results REP consists of four phases: pre-conditions (e.g., identifying need, target population, and suitable intervention, pre-implementation (e.g., intervention packaging and community input, implementation (e.g., package dissemination, training, technical assistance, and evaluation, and maintenance and evolution (e.g., preparing the intervention for sustainability. Key components of REP, including intervention packaging, training, technical assistance, and fidelity assessment are crucial to the implementation of effective interventions in health care. Conclusion REP is a well-suited framework for implementing health care interventions, as it specifies steps needed to maximize fidelity while allowing opportunities for flexibility (i.e., local customizing to maximize transferability. Strategies that foster the sustainability of REP as a tool to implement effective health care interventions need to be developed and tested.

  14. A generic agent-based framework for cooperative search using pattern matching and reinforcement learning

    Martin, Simon; Ouelhadj, Djamila; Beullens, P.; Ozcan, E.

    2011-01-01

    Cooperative search provides a class of strategies to design more effective search methodologies through combining (meta-) heuristics for solving combinatorial optimisation problems. This area has been little explored in operational research. In this study, we propose a general agent-based distributed framework where each agent implements a (meta-) heuristic. An agent continuously adapts itself during the search process using a cooperation protocol based on reinforcement learning and pattern m...

  15. A web-based framework for urban data sharing and dynamic integration

    Wang, Hongxia; Hamilton, Andy; Counsell, John; Tah, Joseph

    2007-01-01

    In urban planning and management, data sharing and integration are always problematic because urban datasets are heterogeneous and scattered in different domains and organisations. This paper introduces the research work being carried within the Virtual Environment Planning (VEPS) project. Based on a loosely-coupled mediator system and Open Geospatial Consortium’s Web Services (OWS) architecture, a Web-based information service framework is designed to support the sharing and integration of g...

  16. An Agent-Based Focused Crawling Framework for Topic- and Genre-Related Web Document Discovery

    Pappas, Nikolaos; Katsimpras, Georgios; Stamatatos, Efstathios

    2012-01-01

    The discovery of web documents about certain topics is an important task for web-based applications including web document retrieval, opinion mining and knowledge extraction. In this paper, we propose an agent-based focused crawling framework able to retrieve topic- and genre-related web documents. Starting from a simple topic query, a set of focused crawler agents explore in parallel topic-specific web paths using dynamic seed URLs that belong to certain web genres and are collected from web...

  17. A location quotient-based interregional input-output (IRIOLQ) framework

    Jahn, Malte

    2015-01-01

    The regionalization of national input-output tables is a major issue in regional science as corresponding regional data is often unavailable. In this paper, a framework is developed to estimate intra- and interregional input-output tables. The intraregional estimates are based on the wellaccepted FLQ method. The interregional estimates include gravity model-based estimates to account for geographical distances between the regions. The estimates are embedded in an interregional accounting fram...

  18. Wavelength-Tunable Microlasers Based on the Encapsulation of Organic Dye in Metal-Organic Frameworks.

    Wei, Yanhui; Dong, Haiyun; Wei, Cong; Zhang, Wei; Yan, Yongli; Zhao, Yong Sheng

    2016-09-01

    A wavelength-tunable microlaser is realized based on the controlled intramolecular charge transfer (ICT) process in dye-encapsulated metal-organic framework (MOF) material. The confinement effect of the MOFs is beneficial for low-threshold lasing. By effectively controlling the polarity of the MOF pores, the population distribution between the locally excited and ICT states is continuously modulated, thus achieving broadband tunable MOF-based microlasers. PMID:27314453

  19. A dual framework for lower bounds of the quadratic assignment|problem based on linearization

    Karisch, Stefan E.; Cela, E.; Clausen, Jens; Espersen, Torben Grønvall

    1999-01-01

    A dual framework allowing the comparison of various bounds for the quadratic assignment problem (QAP) based on linearization, e.g. the bounds of Adams and Johnson, Carraresi and Malucelli, and Hahn and Grant, is presented. We discuss the differences of these bounds and propose a new and more...... general bounding procedure based on the dual of the linearization of Adams and Johnson. The new procedure has been applied to problems of dimension up to...

  20. A Naphthalenediimide-Based Metal-Organic Framework and Thin Film Exhibiting Photochromic and Electrochromic Properties.

    Xie, Yi-Xin; Zhao, Wen-Na; Li, Guo-Chang; Liu, Peng-Fei; Han, Lei

    2016-01-19

    A multifunctional metal-organic framework, NBU-3, has been explored as a 2D three-connected network based on a naphthalenediimide-based ligand. The NBU-3 crystals display photochromic properties, and NBU-3 thin films on FTO substrates exhibit electrochromic properties. NBU-3 is the first example of MOF materials containing both photochromic and electrochromic properties, which can be desirable for thin film devices. PMID:26713454

  1. A Multisector Framework for Assessing Community-Based Forest Management: Lessons from Madagascar

    Daniel J. Decker; Daniela B. Raik

    2007-01-01

    Community-based forest management has proliferated throughout Africa as national governments have decentralized the administration of public forestry. Community-based forestry has taken multiple forms, depending on the assortment of land-tenure systems, forest-use norms, wood demand, and social organization, among others factors. Nature, Wealth, and Power is an analytical framework that has been developed from experiences in natural resource management in Africa. In this paper, we amend the f...

  2. A Framework for Teaching Programming on the Internet: A Web-Based Simulation Approach

    Yousif A. Bastaki

    2012-01-01

    Problem statement: This research study describes the process of developing a web-based framework for simulating programming language activities on the Internet, in an interactive way, by enabling executable programs to perform automatically their function. Approach: The interaction process is played using Java applets. It emphasizes the importance of building the web-based architecture of the proposed simulation model. Results: The research concentrates on developing programming courses on th...

  3. An ecosystem-based approach and management framework for the integrated evaluation of bivalve aquaculture impacts

    Cranford, Peter J.; Kamermans, Pauline; Krause, Gesche; Mazurié, Joseph; Buck, Bela H.; Dolmer, Per; Fraser, David; Van Nieuwenhove, Kris; O’Beirn, Francis X.; Sanchez-Mata, Adoración; Thorarinsdóttir, Gudrun G.; Strand, Øivind

    2012-01-01

    An ecosystem-based approach to bivalve aquaculture management is a strategy for the integration of aquaculture within the wider ecosystem, including human aspects, in such a way that it promotes sustainable development, equity, and resilience of ecosystems. Given the linkage between social and ecological systems, marine regulators require an ecosystem-based decision framework that structures and integrates the relationships between these systems and facilitates communication of aquaculture–en...

  4. Multidisciplinary Framework-Based Service Modeling Applied to Service Coursework and Business Planner Interaction

    Nakamura, Kotaro; Ikawa, Yasuo

    2009-01-01

    Launching new high-value-added services calls forsystematic methodologies based on multidisciplinary frameworkenabling the transformation from service concept to real service.The collaboration of business planers from various kinds ofservice and the sharing and assignment among individuals/organization, goods/infrastructure, technology/system requirethe establishment of a common framework and service modelingapproaches based on multidisciplinary studies.The present paper applies the service m...

  5. Stabilization of a highly porous metal-organic framework utilizing a carborane-based linker.

    Clingerman, Daniel J; Morris, William; Mondloch, Joseph E; Kennedy, Robert D; Sarjeant, Amy A; Stern, Charlotte; Hupp, Joseph T; Farha, Omar K; Mirkin, Chad A

    2015-04-18

    The first tritopic carborane-based linker, H3BCA (C15B24O6H30), based on closo-1,10-C2B8H10, has been synthesized and incorporated into a metal-organic framework (MOF), NU-700 (Cu3(BCA)2). In contrast to the analogous MOF-143, NU-700 can be activated with retention of porosity, yielding a BET surface area of 1870 m(2) g(-1). PMID:25767827

  6. Simulation-Based E-Learning Framework for Entrepreneurship Education and Training

    Constanţa-Nicoleta Bodea

    2015-02-01

    Full Text Available The paper proposes an e-Learning framework in entrepreneurship. The framework has three main components, for identification the business opportunities, for developing business scenarios and for risk analysis. A common database assures the components integration. The main components of this framework are already available; the main challenging for those interested in using them is to design an integrated flow of activities, adapted with their curricula and other educational settings. The originality of the approach is that the framework is domain independent and uses advanced IT technologies, such as recommendation algorithms, agent-based simulations and extended graphical support. Using this e-learning framework, the students can learn how to choose relevant characteristics/aspects for a type of business and how important is each of them according specific criteria; how to set realistic values for different characteristics/aspects of the business, how a business scenario can be changed in order to fit better to the business context and how to assess/evaluate business scenarios.

  7. A modularized operator interface framework for Tokamak based on MVC design pattern

    Highlights: • Our framework is based on MVC design pattern. • XML is used to cope with minor difference between different applications. • Functions dealing with EPICS and MDSplus have been modularized into reusable modules. • The modularized framework will shorten J-TEXT's software development cycle. - Abstract: Facing various and continually changing experimental needs, the J-TEXT Tokamak experiment requires home-made software applications developed for different sub-systems. Though dealing with different specific problems, these software applications usually share a lot of functionalities in common. With the goal of improving the productivity of research groups, J-TEXT has designed a C# desktop application framework which is mainly focused on operator interface development. Following the Model–View–Controller (MVC) design pattern, the main functionality dealing with Experimental Physics and Industrial Control System (EPICS) or MDSplus has been modularized into reusable modules. Minor difference among applications can be coped with XML configuration files. In this case, developers are able to implement various kinds of operator interface without knowing the implementation details of the bottom functions in Models, mainly focusing on Views and Controllers. This paper presents J-TEXT C# desktop application framework, introducing the technology of fast development of the modularized operator interface. Some experimental applications designed in this framework have been already deployed in J-TEXT, and will be introduced in this paper

  8. Online Data Monitoring Framework Based on Histogram Packaging in Network Distributed Data Acquisition Systems

    Online monitor frameworkis a new general software framework for online data monitoring, which provides a way to collect information from online systems, including data acquisition, and displays them to shifters far from experimental sites. 'Monitor Server', a core system in this framework gathers the monitoring information from the online subsystems and the information is handled as collections of histograms named Histogram Package. Monitor Server broadcasts the histogram packages to 'Monitor Viewers', graphical user interfaces in the framework. We developed two types of the viewers with different technologies: Java and web browser. We adapted XML based file for the configuration of GUI components on the windows and graphical objects on the canvases. Monitor Viewer creates its GUIs automatically with the configuration files.This monitoring framework has been developed for the Double Chooz reactor neutrino oscillation experiment in France, but can be extended for general application to be used in other experiments. This document reports the structure of the online monitor framework with some examples from the adaption to the Double Chooz experiment.

  9. Technology strategy as macro-actor

    Tryggestad, Kjell

    2003-01-01

    third case account for how the strategic technology and the strategic collective emerge and co-produce each other as a macro-actor, only to become transformed in unexpected ways - as common technology and reflective human subjects.In the concluding section, it is argued that the humanity of the......-human entities to the explanatory repertoire of strategy research, another line of inquiry is pursued. The performative perspective thus proposed, is inspired by the classical work of Von Clausewitz and the recent anthropology of science, technology and organizational identities. In the proposed perspective, the...... outcomes.Three cases are presented, each of them with a particular bearing on how materials participate in the making of emerging strategic identities and outcomes:The first case account for strategies transforming plans into anti-plans. This is a case of how a strategic plan is betrayed (or rejected) by...

  10. Games Real Actors Could Play: The Problem of Connectedness

    Scharpf, Fritz W.

    1990-01-01

    This paper continues the examination, begun in MPIFG Discussion Paper 89/9, of the validity of game-theoretic explanations in empirical social science research. Assuming that real actors with bounded rationality would be unable to cope with the explosive complexity of n-person games, discussion focuses first on the conditions under which corporate actors and coalitions, as well as collective and even aggregate actors can be legitimately treated as unitary players. In addition, the importance ...

  11. Games Real Actors Could Play: The Challenge of Complexity

    Scharpf, F.

    1991-01-01

    This paper continues the examination of the validity of game-theoretic explanations in empirical social science and policy research. Assuming that real actors with bounded rationality would be unable to cope with the explosive complexity of n-person games, discussion focuses on the conditions under which corporate actors and coalitions, as well as collective and even aggregate actors, may be legitimately treated as unitary players. In addition, the importance of functional differentiation and...

  12. A Framework-Based Approach for Fault-Tolerant Service Robots

    Heejune Ahn

    2012-11-01

    Full Text Available Recently the component‐based approach has become a major trend in intelligent service robot development due to its reusability and productivity. The framework in a component‐based system should provide essential services for application components. However, to our knowledge the existing robot frameworks do not yet support fault tolerance service. Moreover, it is often believed that faults can be handled only at the application level. In this paper, by extending the robot framework with the fault tolerance function, we argue that the framework‐based fault tolerance approach is feasible and even has many benefits, including that: 1 the system integrators can build fault tolerance applications from non‐fault‐aware components; 2 the constraints of the components and the operating environment can be considered at the time of integration, which ‐ cannot be anticipated eaily at the time of component development; 3 consistency in system reliability can be obtained even in spite of diverse application component sources. In the proposed construction, we build XML rule files defining the rules for probing and determining the fault conditions of each component, contamination cases from a faulty component, and the possible recovery and safety methods. The rule files are established by a system integrator and the fault manager in the framework controls the fault tolerance process according to the rules. We demonstrate that the fault‐tolerant framework can incorporate widely accepted fault tolerance techniques. The effectiveness and real‐time performance of the framework‐based approach and its techniques are examined by testing an autonomous mobile robot in typical fault scenarios.

  13. Knowledge management for industrial safety, generic resource platform combined with an ontology based approach

    Debray, Bruno; Abou Assali, Amjad; Pradaud, Isabelle; Vaudelin, Jacques; Lenne, Dominique

    2007-01-01

    International audience The capacity to manage risks and maintain industrial safety is largely based on the capacity of various actors to acquire, maintain and share knowledge on a large variety of subjects. The actors are, of course, the plant operator but also the employees, the competent authorities, the external maintenance teams or internal or external experts in charge of risk assessment and design of risk management. The knowledge ranges from the regulatory framework to the details o...

  14. The Use of Meta Communication Actors by Romentic Partners in Interpersonel Relations: Case of Anadolu University Faculty of Communication Sciences Students

    ÇALAPKULU, Çiğdem; DEMİRAY, Ugur

    2015-01-01

    Abstract— The purpose of the study is to examine the use of meta-communication actors of romantic partners in interpersonal relations and to analyze the functionality of these actors. The study based on an investigationregarding the use of meta-communication actors of romantic partners in interpersonal relations is an interdisciplinary research aiming at theoretically and practically integrating new approaches to interpersonal communication with family sociology and psychology.A happy and com...

  15. Worlds Apart: A Social Theoretical Exploration of Local Networks, Natural Actors, and Practitioners of Rural Development in Southern Honduras

    Brian J. Gareau

    2012-01-01

    This paper explores the importance of incorporating the socioecological realities of alternative networks into analyses of rural development. Cultural theory is examined, which provides a base upon which rural development can identify difference in worldviews based on difference in sociological conditions and environmental phenomena. Actor-oriented theory problematizes the ideal types of cultural theory, providing a means of give-and-take between actors’ worldviews of different networks. Ac...

  16. Actor-specific contributions to the deforestation slowdown in the Brazilian Amazon.

    Godar, Javier; Gardner, Toby A; Tizado, E Jorge; Pacheco, Pablo

    2014-10-28

    Annual deforestation rates in the Brazilian Amazon fell by 77% between 2004 and 2011, yet have stabilized since 2009 at 5,000-7,000 km(2). We provide the first submunicipality assessment, to our knowledge, of actor-specific contributions to the deforestation slowdown by linking agricultural census and remote-sensing data on deforestation and forest degradation. Almost half (36,158 km(2)) of the deforestation between 2004 and 2011 occurred in areas dominated by larger properties (>500 ha), whereas only 12% (9,720 km(2)) occurred in areas dominated by smallholder properties (deforestation rates fell during this period by 68-85% for all actors, the contribution of the largest landholders (>2,500 ha) to annual deforestation decreased over time (63% decrease between 2005 and 2011), whereas that of smallholders went up by a similar amount (69%) during the same period. In addition, the deforestation share attributable to remote areas increased by 88% between 2009 and 2011. These observations are consistent across the Brazilian Amazon, regardless of geographical differences in actor dominance or socioenvironmental context. Our findings suggest that deforestation policies to date, which have been particularly focused on command and control measures on larger properties in deforestation hotspots, may be increasingly limited in their effectiveness and fail to address all actors equally. Further reductions in deforestation are likely to be increasingly costly and require actor-tailored approaches, including better monitoring to detect small-scale deforestation and a shift toward more incentive-based conservation policies. PMID:25313087

  17. Model-based Computer Aided Framework for Design of Process Monitoring and Analysis Systems

    Singh, Ravendra; Gernaey, Krist; Gani, Rafiqul

    2009-01-01

    In the manufacturing industry, for example, the pharmaceutical industry, a thorough understanding of the process is necessary in addition to a properly designed monitoring and analysis system (PAT system) to consistently obtain the desired end-product properties. A model-based computer......-aided framework including the methods and tools through which the design of monitoring and analysis systems for product quality control can be generated, analyzed and/or validated, has been developed. Two important supporting tools developed as part of the framework are a knowledge base and a model library....... The knowledge base provides the necessary information/data during the design of the PAT system while the model library generates additional or missing data needed for design and analysis. Optimization of the PAT system design is achieved in terms of product data analysis time and/or cost of monitoring equipment...

  18. Switching Cognitive Gears: Problem-Based Learning and Success-Based Learning as Instructional Frameworks in Leadership Education

    Schechter, Chen

    2011-01-01

    Purpose: This article aims to reinterpret principal preparatory programs to also include the collective learning-from-success process (success-based learning), thus providing a complementary instructional framework on how to prepare principals for today's public school reality. Design/methodology/approach: The discussion reviews the core…

  19. Can We Do Better in Unimodal Biometric Systems? A Rank-Based Score Normalization Framework.

    Moutafis, Panagiotis; Kakadiaris, Ioannis A

    2015-12-01

    Biometric systems use score normalization techniques and fusion rules to improve recognition performance. The large amount of research on score fusion for multimodal systems raises an important question: can we utilize the available information from unimodal systems more effectively? In this paper, we present a rank-based score normalization framework that addresses this problem. Specifically, our approach consists of three algorithms: 1) partition the matching scores into subsets and normalize each subset independently; 2) utilize the gallery versus gallery matching scores matrix (i.e., gallery-based information); and 3) dynamically augment the gallery in an online fashion. We invoke the theory of stochastic dominance along with results of prior research to demonstrate when and why our approach yields increased performance. Our framework: 1) can be used in conjunction with any score normalization technique and any fusion rule; 2) is amenable to parallel programming; and 3) is suitable for both verification and open-set identification. To assess the performance of our framework, we use the UHDB11 and FRGC v2 face datasets. Specifically, the statistical hypothesis tests performed illustrate that the performance of our framework improves as we increase the number of samples per subject. Furthermore, the corresponding statistical analysis demonstrates that increased separation between match and nonmatch scores is obtained for each probe. Besides the benefits and limitations highlighted by our experimental evaluation, results under optimal and pessimal conditions are also presented to offer better insights. PMID:25546871

  20. KODAMA and VPC based Framework for Ubiquitous Systems and its Experiment

    Takahashi, Kenichi; Amamiya, Satoshi; Iwao, Tadashige; Zhong, Guoqiang; Kainuma, Tatsuya; Amamiya, Makoto

    Recently, agent technologies have attracted a lot of interest as an emerging programming paradigm. With such agent technologies, services are provided through collaboration among agents. At the same time, the spread of mobile technologies and communication infrastructures has made it possible to access the network anytime and from anywhere. Using agents and mobile technologies to realize ubiquitous computing systems, we propose a new framework based on KODAMA and VPC. KODAMA provides distributed management mechanisms by using the concept of community and communication infrastructure to deliver messages among agents without agents being aware of the physical network. VPC provides a method of defining peer-to-peer services based on agent communication with policy packages. By merging the characteristics of both KODAMA and VPC functions, we propose a new framework for ubiquitous computing environments. It provides distributed management functions according to the concept of agent communities, agent communications which are abstracted from the physical environment, and agent collaboration with policy packages. Using our new framework, we conducted a large-scale experiment in shopping malls in Nagoya, which sent advertisement e-mails to users' cellular phones according to user location and attributes. The empirical results showed that our new framework worked effectively for sales in shopping malls.

  1. A Q-based integrating interaction framework system for multi-agent coordination

    WANG Zhen-jie; SHENG Huan-ye; XIAO Zheng-guang

    2005-01-01

    Interaction is one of the crucial features of multi-agent systems, in which there are two kinds of interaction: agent-to-agent and human-to-agent. In order to unify the two kinds of interaction while designing multiagent systems, this paper introduces Q language-a scenario description language for designing interaction among agents and humans. Based on Q, we propose an integrating interaction framework system for multi-agent coordination, in which Q scenarios are used to uniformly describe both kinds of interactions. Being in accordance to the characteristics of Q language, the Q-based framework makes the interaction process open and easily understood by the users. Additionally, it makes specific applications of multi-agent systems easy to be established by application designers. By applying agent negotiation in agent-mediated e-commerce and agent cooperation in interoperable information query on the Semantic Web, we illustrate how the presented framework for multi-agent coordination is implemented in concrete applications. At the same time, these two different applications also demonstrate usability of the presented framework and verify validity of Q language.

  2. A Web-based Collaborative System Framework for Green Building Certification

    Jack C.P. Cheng

    2013-11-01

    Full Text Available The built environment is moving towards sustainable development and the number of green buildings increased worldwide in recent years. Green buildings are environmentally, socially and economically desirable; however the certification of green buildings is often expensive and labor-intensive. The document preparation and review process for green building certification is iterative in nature and requires the collaboration of many project participants, certification organizations and third party engineering consultants. This paper aims at developing a system framework that can assist the green building certification process. Different certification standards have been studied and their scope and credit calculation were compared to understand the requirements of the system framework. Based on the study, the required features were designed as follows, (1 role-based access control, (2 document manager and related document discovery, (3 workflow manager, (4 credit manager, and (5 knowledge manager. The features of the system provide a collaborative environment and reduce repetitive works commonly occurring in manual processes. The features of the system framework are discussed and illustrated considering the Hong Kong BEAM Plus standard. This paper also describes how the system framework enhances collaboration in the certification process

  3. Formulating the Evidence Based Practice Question: A Review of the Frameworks

    Karen Sue Davies

    2011-06-01

    Full Text Available IntroductionQuestions are the driving force behind evidence based practice (EBP (Eldredge, 2000. If there were no questions, EBP would be unnecessary. Evidence based practice questions focus on practical real-world problems and issues. The more urgent the question, the greater the need to place it in an EBP context.One of the most challenging aspects of EBP is to actually identify the answerable question. This ability to identify the question is fundamental to then locating relevant information to answer the question. An unstructured collection of keywords can retrieve irrelevant literature, which wastes time and effort eliminating inappropriate information. Successfully retrieving relevant information begins with a clearly defined, well-structured question. A standardized format or framework for asking questionshelps focus on the key elements. Question generation also enables a period of reflection. Is this the information I am really looking for? Why I am looking for this information? Is there another option to pursue first?This paper introduces the first published framework, PICO (Richardson, Wilson, Nishikawa and Hayward, 1995 and some of its later variations including ECLIPSE (Wildridge and Bell, 2002 and SPICE (Booth, 2004. Sample library and information science (LIS questions are provided to illustrate the use of these frameworks to answer questions in disciplines other than medicine.Booth (2006 published a broad overview of developing answerable research questions which also considered whether variations to the original PICO framework were justifiable and worthwhile. This paper will expand on that work.

  4. A Component-Based Vocabulary-Extensible Sign Language Gesture Recognition Framework

    Shengjing Wei

    2016-04-01

    Full Text Available Sign language recognition (SLR can provide a helpful tool for the communication between the deaf and the external world. This paper proposed a component-based vocabulary extensible SLR framework using data from surface electromyographic (sEMG sensors, accelerometers (ACC, and gyroscopes (GYRO. In this framework, a sign word was considered to be a combination of five common sign components, including hand shape, axis, orientation, rotation, and trajectory, and sign classification was implemented based on the recognition of five components. Especially, the proposed SLR framework consisted of two major parts. The first part was to obtain the component-based form of sign gestures and establish the code table of target sign gesture set using data from a reference subject. In the second part, which was designed for new users, component classifiers were trained using a training set suggested by the reference subject and the classification of unknown gestures was performed with a code matching method. Five subjects participated in this study and recognition experiments under different size of training sets were implemented on a target gesture set consisting of 110 frequently-used Chinese Sign Language (CSL sign words. The experimental results demonstrated that the proposed framework can realize large-scale gesture set recognition with a small-scale training set. With the smallest training sets (containing about one-third gestures of the target gesture set suggested by two reference subjects, (82.6 ± 13.2% and (79.7 ± 13.4% average recognition accuracy were obtained for 110 words respectively, and the average recognition accuracy climbed up to (88 ± 13.7% and (86.3 ± 13.7% when the training set included 50~60 gestures (about half of the target gesture set. The proposed framework can significantly reduce the user’s training burden in large-scale gesture recognition, which will facilitate the implementation of a practical SLR system.

  5. A Component-Based Vocabulary-Extensible Sign Language Gesture Recognition Framework.

    Wei, Shengjing; Chen, Xiang; Yang, Xidong; Cao, Shuai; Zhang, Xu

    2016-01-01

    Sign language recognition (SLR) can provide a helpful tool for the communication between the deaf and the external world. This paper proposed a component-based vocabulary extensible SLR framework using data from surface electromyographic (sEMG) sensors, accelerometers (ACC), and gyroscopes (GYRO). In this framework, a sign word was considered to be a combination of five common sign components, including hand shape, axis, orientation, rotation, and trajectory, and sign classification was implemented based on the recognition of five components. Especially, the proposed SLR framework consisted of two major parts. The first part was to obtain the component-based form of sign gestures and establish the code table of target sign gesture set using data from a reference subject. In the second part, which was designed for new users, component classifiers were trained using a training set suggested by the reference subject and the classification of unknown gestures was performed with a code matching method. Five subjects participated in this study and recognition experiments under different size of training sets were implemented on a target gesture set consisting of 110 frequently-used Chinese Sign Language (CSL) sign words. The experimental results demonstrated that the proposed framework can realize large-scale gesture set recognition with a small-scale training set. With the smallest training sets (containing about one-third gestures of the target gesture set) suggested by two reference subjects, (82.6 ± 13.2)% and (79.7 ± 13.4)% average recognition accuracy were obtained for 110 words respectively, and the average recognition accuracy climbed up to (88 ± 13.7)% and (86.3 ± 13.7)% when the training set included 50~60 gestures (about half of the target gesture set). The proposed framework can significantly reduce the user's training burden in large-scale gesture recognition, which will facilitate the implementation of a practical SLR system. PMID:27104534

  6. Actores sociales y ambitos de construccion de politicas ambientales Social actors and scenarios in the generation of environmental politics

    Eduardo Gudynas

    2001-06-01

    Full Text Available Se analiza el concepto de "actores claves" en la generación de políticas ambientales. Independientemente de la definición de actor social que se maneje, el asumir la existencia de actores claves ofrece limitaciones conceptuales y prácticas, ya que éstos son coyunturales a cada situación específica. Todos pueden ser actores claves en generar políticas ambientales cumpliendo papeles diferenciales. Como alternativa se utiliza el término de "actores destacados" y se revisan aspectos sobresalientes de varios de ellos en América Latina. Seguidamente se postula que el análisis se debe centrar en los escenarios sociales donde esos actores se pueden manifestar. Se ofrece una distinción preliminar de escenarios que permite integrar a nuevos y viejos movimientos sociales y establecer relaciones de articulación y equivalencia.The concept of "key actors" in the field of environmental politics is analyzed. Beyond the definition of social actor, the assumption of the existence of key actors implies conceptual and practical limitations, as it depends of each specific situation. Everyone could be a key actor under differential roles in the generation of environmental politics. As an alternative, the term "noteworthy actors" is used and a brief review of them in Latin America is presented. The relevant question should address the social scenarios from where these actors can express themselves. A preliminary distinction of scenarios is presented, in which old and new social movements could be integrated and relationships of articulation and equivalence could be established.

  7. Private Actors on the Rise? The Role of Non-State Actors in Compliance with International Institutions

    Börzel, Tanja

    2000-01-01

    (Transnational) private actors have a significant role in ‘global governance’. But their influence varies significantly, both across time and issues. The major challenge for theorizing about non-state actors in world politics is not only to demonstrate that they matter but explain where, when, and how they matter. This paper takes issue with these challenges by looking at the role of private actors in compliance with international institutions. The first part of the paper clarifies the concep...

  8. Risk analysis based framework for project planning and maintenance optimization; Riskanalysbaserat ramverk foer projektplanering och underhaallsoptimering

    Wallnerstroem, Carl Johan [KTH Royal Institute of Technology, Stockholm (Sweden)

    2012-12-15

    A shorter (equivalent to 4 months full time) postdoctoral project, supported by Elforsk, has been conducted by the research group RCAM, at the Royal Institute of Technology (KTH). The main objective is to develop and benefit from results of a completed doctoral project to provide continuity in the research. This report includes an introduction to the subject, a Swedish translation of a proposed risk analysis based framework for cost-effective resource allocation applied to power distribution systems including an example (also published as two English scientific papers), a brief Swedish summary of some other papers and a closure part which includes proposals for future research. There is an international tendency toward increased demand for both cost efficiency and high reliability of power distribution systems. To meet these demands, asset management methods, including reliability analyses, have been developed. These reliability analyses often utilize only mean values and hence do not take into consideration the consequences of severe events. This report proposes an analysis framework. The aim is to identify more risk categories, to allocate resources more cost-effectively and to be possible to adjust the level of complexity to be suitable to use within the organization of distribution system operators. The suggested framework is exemplified and evaluated by implementing it within the analyses of a real power distribution system. The main concept is to divide comprehensive projects into minor analyses and then, in a final step, compile the results. The proposed analysis framework can be used independently or combined with earlier proposed vulnerability methods. The latter provides a two-dimensional analysis framework. It is shown that totally different investment alternatives could be preferred depending on whether a traditional analysis method using average values is employed compared with the proposed analysis framework, which also considers severe system states

  9. An Indicator-Based Framework to Evaluate Sustainability of Farming Systems: Review of Applications in Tuscany

    Concetta Vazzana

    2011-02-01

    Full Text Available Agricultural researchers widely recognise the importance of sustainable agricultural production systems and the need to develop appropriate methods to measure sustainability at the farm level. Policymakers need accounting and evaluation tools to be able to assess the potential of sustainable production practices and to provide appropriate agro-environmental policy measures. Farmers are in search of sustainable management tools to cope with regulations and enhance efficiency. This study proposes an indicator-based framework to evaluate sustainability of farming systems. Main features of the indicators’ framework are the relevance given to different spatial scales (farm, site and field, production and pedo-climatic factors, and a holistic view of the agro-ecosystem. The framework has been conceived to tackle different purposes ranging from detailed scientific analyses to farm-level management systems and cross-compliance. Agro-environmental indicators can be calculated, simulated with models or directly measured with different levels of detail proportionally to the aims of the evaluation exercise. The framework is organised in a number of environmental and production systems and sub-systems. For each system environmental critical points are identified with corresponding agro-environmental indicators and processing methods. A review of applications of the framework in Tuscany, Italy, since 1991 is presented. Applications range from prototyping farming systems, to integrated farm ecological-economic modelling, comparisons between organic, integrated and conventional farming systems, farm eco-management voluntary audit schemes and cross-compliance. Strengths and weaknesses of the framework are discussed against generic requirements of information systems and operational issues.

  10. An Indicator-Based Framework to Evaluate Sustainability of Farming Systems: Review of Applications in Tuscany

    Cesare Pacini

    2009-03-01

    Full Text Available Agricultural researchers widely recognise the importance of sustainable agricultural production systems and the need to develop appropriate methods to measure sustainability at the farm level. Policymakers need accounting and evaluation tools to be able to assess the potential of sustainable production practices and to provide appropriate agro-environmental policy measures. Farmers are in search of sustainable management tools to cope with regulations and enhance efficiency. This study proposes an indicator-based framework to evaluate sustainability of farming systems. Main features of the indicators’ framework are the relevance given to different spatial scales (farm, site and field, production and pedo-climatic factors, and a holistic view of the agro-ecosystem. The framework has been conceived to tackle different purposes ranging from detailed scientific analyses to farm-level management systems and cross-compliance. Agro-environmental indicators can be calculated, simulated with models or directly measured with different levels of detail proportionally to the aims of the evaluation exercise. The framework is organised in a number of environmental and production systems and sub-systems. For each system environmental critical points are identified with corresponding agro-environmental indicators and processing methods. A review of applications of the framework in Tuscany, Italy, since 1991 is presented. Applications range from prototyping farming systems, to integrated farm ecological-economic modelling, comparisons between organic, integrated and conventional farming systems, farm eco-management voluntary audit schemes and cross-compliance. Strengths and weaknesses of the framework are discussed against generic requirements of information systems and operational issues.

  11. Improving condition severity classification with an efficient active learning based framework.

    Nissim, Nir; Boland, Mary Regina; Tatonetti, Nicholas P; Elovici, Yuval; Hripcsak, George; Shahar, Yuval; Moskovitch, Robert

    2016-06-01

    Classification of condition severity can be useful for discriminating among sets of conditions or phenotypes, for example when prioritizing patient care or for other healthcare purposes. Electronic Health Records (EHRs) represent a rich source of labeled information that can be harnessed for severity classification. The labeling of EHRs is expensive and in many cases requires employing professionals with high level of expertise. In this study, we demonstrate the use of Active Learning (AL) techniques to decrease expert labeling efforts. We employ three AL methods and demonstrate their ability to reduce labeling efforts while effectively discriminating condition severity. We incorporate three AL methods into a new framework based on the original CAESAR (Classification Approach for Extracting Severity Automatically from Electronic Health Records) framework to create the Active Learning Enhancement framework (CAESAR-ALE). We applied CAESAR-ALE to a dataset containing 516 conditions of varying severity levels that were manually labeled by seven experts. Our dataset, called the "CAESAR dataset," was created from the medical records of 1.9 million patients treated at Columbia University Medical Center (CUMC). All three AL methods decreased labelers' efforts compared to the learning methods applied by the original CAESER framework in which the classifier was trained on the entire set of conditions; depending on the AL strategy used in the current study, the reduction ranged from 48% to 64% that can result in significant savings, both in time and money. As for the PPV (precision) measure, CAESAR-ALE achieved more than 13% absolute improvement in the predictive capabilities of the framework when classifying conditions as severe. These results demonstrate the potential of AL methods to decrease the labeling efforts of medical experts, while increasing accuracy given the same (or even a smaller) number of acquired conditions. We also demonstrated that the methods included in

  12. Application of the Actor-Critic Architecture to Functional Electrical Stimulation Control of a Human Arm.

    Thomas, Philip; Branicky, Michael; van den Bogert, Antonie; Jagodnik, Kathleen

    2009-01-01

    Clinical tests have shown that the dynamics of a human arm, controlled using Functional Electrical Stimulation (FES), can vary significantly between and during trials. In this paper, we study the application of the actor-critic architecture, with neural networks for the both the actor and the critic, as a controller that can adapt to these changing dynamics of a human arm. Development and tests were done in simulation using a planar arm model and Hill-based muscle dynamics. We begin by training it using a Proportional Derivative (PD) controller as a supervisor. We then make clinically relevant changes to the dynamics of the arm and test the actor-critic's ability to adapt without supervision in a reasonable number of episodes. Finally, we devise methods for achieving both rapid learning and long-term stability. PMID:20689654

  13. A knowledge-based system framework for real-time monitoring applications

    A real-time environment presents a challenge for knowledge-based systems for process monitoring with on-line data acquisition in nuclear power plants. These applications are typically data intensive. This, coupled with the dynamic nature of events on which problematic decisions are based, requires the development of techniques fundamentally different from those generally employed. Traditional approaches involve knowledge management techniques developed for static data, the majority of which is elicited directly from the user in a consultation environment. Inference mechanisms are generally noninterruptible, requiring all appropriate rules to be fired before new data can be accommodated. As a result, traditional knowledge-based applications in real-time environments have inherent problems in dealing with the time dependence of both the data and the solution process. For example, potential problems include obtaining a correct solution too late to be of use or focusing computing resources on problems that no longer exist. A knowledge-based system framework, the real-time framework (RTF), has been developed that can accommodate the time dependencies and resource trade-offs required for real-time process monitoring applications. This framework provides real-time functionality by using generalized problem-solving goals and control strategies that are modifiable during system operation and capable of accommodating feedback for redirection of activities

  14. Actor-Network Theory as a sociotechnical lens to explore the relationship of nurses and technology in practice: methodological considerations for nursing research.

    Booth, Richard G; Andrusyszyn, Mary-Anne; Iwasiw, Carroll; Donelle, Lorie; Compeau, Deborah

    2016-06-01

    Actor-Network Theory is a research lens that has gained popularity in the nursing and health sciences domains. The perspective allows a researcher to describe the interaction of actors (both human and non-human) within networked sociomaterial contexts, including complex practice environments where nurses and health technology operate. This study will describe Actor-Network Theory and provide methodological considerations for researchers who are interested in using this sociotechnical lens within nursing and informatics-related research. Considerations related to technology conceptualization, levels of analysis, and sampling procedures in Actor-Network Theory based research are addressed. Finally, implications for future nursing research within complex environments are highlighted. PMID:26531190

  15. A Decision Support Framework for Science-Based, Multi-Stakeholder Deliberation: A Coral Reef Example

    Rehr, Amanda P.; Small, Mitchell J.; Bradley, Patricia; Fisher, William S.; Vega, Ann; Black, Kelly; Stockton, Tom

    2012-12-01

    We present a decision support framework for science-based assessment and multi-stakeholder deliberation. The framework consists of two parts: a DPSIR (Drivers-Pressures-States-Impacts-Responses) analysis to identify the important causal relationships among anthropogenic environmental stressors, processes, and outcomes; and a Decision Landscape analysis to depict the legal, social, and institutional dimensions of environmental decisions. The Decision Landscape incorporates interactions among government agencies, regulated businesses, non-government organizations, and other stakeholders. It also identifies where scientific information regarding environmental processes is collected and transmitted to improve knowledge about elements of the DPSIR and to improve the scientific basis for decisions. Our application of the decision support framework to coral reef protection and restoration in the Florida Keys focusing on anthropogenic stressors, such as wastewater, proved to be successful and offered several insights. Using information from a management plan, it was possible to capture the current state of the science with a DPSIR analysis as well as important decision options, decision makers and applicable laws with a the Decision Landscape analysis. A structured elicitation of values and beliefs conducted at a coral reef management workshop held in Key West, Florida provided a diversity of opinion and also indicated a prioritization of several environmental stressors affecting coral reef health. The integrated DPSIR/Decision landscape framework for the Florida Keys developed based on the elicited opinion and the DPSIR analysis can be used to inform management decisions, to reveal the role that further scientific information and research might play to populate the framework, and to facilitate better-informed agreement among participants.

  16. CORBA-Based Distributed Software Framework for the NIF Integrated Computer Control System

    The National Ignition Facility (NIF), currently under construction at the Lawrence Livermore National Laboratory, is a stadium-sized facility containing a 192-beam, 1.8 Megajoule, 500-Terawatt, ultra-violet laser system together with a 10-meter diameter target chamber with room for nearly 100 experimental diagnostics. The NIF is operated by the Integrated Computer Control System (ICCS) which is a scalable, framework-based control system distributed over 800 computers throughout the NIF. The framework provides templates and services at multiple levels of abstraction for the construction of software applications that communicate via CORBA (Common Object Request Broker Architecture). Object-oriented software design patterns are implemented as templates and extended by application software. Developers extend the framework base classes to model the numerous physical control points and implement specializations of common application behaviors. An estimated 140 thousand software objects, each individually addressable through CORBA, will be active at full scale. Many of these objects have persistent configuration information stored in a database. The configuration data is used to initialize the objects at system start-up. Centralized server programs that implement events, alerts, reservations, data archival, name service, data access, and process management provide common system wide services. At the highest level, a model-driven, distributed shot automation system provides a flexible and scalable framework for automatic sequencing of work-flow for control and monitoring of NIF shots. The shot model, in conjunction with data defining the parameters and goals of an experiment, describes the steps to be performed by each subsystem in order to prepare for and fire a NIF shot. Status and usage of this distributed framework are described

  17. CORBA-based distributed software framework for the NIF integrated computer control system

    The National Ignition Facility (NIF), currently under construction at the Lawrence Livermore National Laboratory, is a stadium-sized facility containing a 192-beam, 1.8 MJ, 500 TW, ultra-violet laser system together with a 10-meter diameter target chamber with room for nearly 100 experimental diagnostics. The NIF is operated by the Integrated Computer Control System (ICCS) which is a scalable, framework-based control system distributed over 800 computers throughout the NIF. The framework provides templates and services at multiple levels of abstraction for the construction of software applications that communicate via CORBA (Common Object Request Broker Architecture). Object-oriented software design patterns are implemented as templates and extended by application software. Developers extend the framework base classes to model the numerous physical control points and implement specializations of common application behaviors. An estimated 140,000 software objects, each individually addressable through CORBA, will be active at full scale. Many of these objects have persistent configuration information stored in a database. The configuration data is used to initialize the objects at system start-up. Centralized server programs that implement events, alerts, reservations, data archival, name service, data access, and process management provide common system wide services. At the highest level, a model-driven, distributed shot automation system provides a flexible and scalable framework for automatic sequencing of workflow for control and monitoring of NIF shots. The shot model, in conjunction with data defining the parameters and goals of an experiment, describes the steps to be performed by each subsystem in order to prepare for and fire a NIF shot. Status and usage of this distributed framework are described

  18. Ecological risk and resilience perspective: a theoretical framework supporting evidence-based practice in schools.

    Powers, Joelle D

    2010-10-01

    Multidisciplinary school practitioners are clearly being called to use evidence-based practices from reputable sources such as their own professional organizations and federal agencies. In spite of this encouragement, most schools are not regularly employing empirically supported interventions. This paper further promotes the use of this approach by describing the theoretical support for evidence-based practice in schools. The ecological risk and resilience theoretical framework presented fills a gap in the literature and advocates for evidence-based practice in schools by illustrating how it can assist practitioners such as school social workers to better address problems associated with school failure. PMID:21082473

  19. Future Workshop as a Pedagogical Framework for Doing Problem Based Learning

    Konnerup, Ulla; Dirckinck-Holmfeld, Lone

    2016-01-01

    based dissemination strategy. This paper is going to address how to design for PBL, so the practice doesn’t ritualize and so the students and professors become participants in a shared learning process even when scaling up the number of students. The research takes point of departure in a single case...... study using Future Workshop as didactic framework. The case is based within at Aalborg University, which has more than 40 years of experiences with PBL. The institutional pedagogical frame and the subject area are within Communication and Digital Media, fifth semester. Design-based research (DBR...

  20. Ship Finds and Their Management as Actor Network

    Tuddenham, David Berg

    2012-12-01

    Ship finds in Norwegian waters that are more than 100 years old came under the jurisdiction of the Cultural Heritage Management (CHM) in 1963, when section 12a of the Norwegian Cultural Heritage Act was implemented. As a consequence, a functional division between land and sea was created where management objects receive different values depending on whether or not they belong to a ship. The objective of this paper is to review Norwegian CHM underwater policy, and discuss the creation of a new management object and its borders with the introduction of a section on ship finds specifically focusing on Actor Network Theory. It is argued that the understanding of the ship find and its belongings can not be understood as something based on inherent qualities to the management object. Instead this paper proposes to comprehend the ship find as a phenomenon held together within a heterogeneous network.

  1. Scenarios for a urban energy transition. Actors, regulations, technologies

    Cities concentrate populations, consumptions, levers of actions, and are places of various experiments for energy transition. This book aims at giving an overview of possible scenarios of development of renewable energies in urban context. It is based on interviews of actors of the energy, building and urban planning sectors by researchers in town planning, management, technology, political and economic sciences. The authors examine what would occur if large companies would manage entire quarters, if local authorities would supervise production and supply, if the State would take control of all fields of action again, or if consumer cooperatives would exchange energy and pool productions. In its different chapters, the book presents four scenarios of energy coordination in urban context by 2040, discuss energy transition in urban spaces, discuss the perspectives of evolution towards more autonomous cities and quarters from an energetic point of view, and discuss business models and urban energetic innovations

  2. MAPPS: A Framework of Peer-to-Peer Systems Based on JXTA and Mobile Agents

    2002-01-01

    Due to the success of Napster, Gnutella and Freenet, peer to peer (P2P) computing has suddenly emerged at the forefront of Internet computing. And a lot of problems including security, reliability and rooting are urgent to be solved.Unfortunately, traditional techniques are not directly applicable to P2P systems. This paper presents a new framework called MAPPS for designing P2P applications based on JXTA and mobile agents. The MAPPS framework is structured as three layers:the MAPPS infiastmcture based on mobile agents, MAPPS services and MAPPS applications. In this way, MAPPS not only follows the ootstanding architecture of JXTA, but also enhances the mobility and flexibility of P2P systems. Using MAPPS,developers of new P2P systems can design and implement P2P systems more efficiently.

  3. FRIAA: A FRamework for Web-based Interactive Astronomy Analysis using AMQP Messaging

    Young, M. D.; Gopu, A.; Hayashi, S.; Cox, J. A.

    2013-10-01

    This paper describes a web-based FRamework for Interactive Astronomy Analysis (FRIAA) being developed as part of the One Degree Imager - Pipeline, Portal, and Archive (ODI-PPA) Science Gateway. The framework provides astronomers with the ability to invoke data processing modules including IRAF and SExtractor on large data within their ODI-PPA web account without requiring them to download the data or to access remote compute resources. Currently available functionality includes contour plots, point source detection and photometry, surface photometry, and catalog source matching. The web browser front-end developed using the Zend PHP platform and the Bootstrap library makes Remote Procedure Calls (RPC) to the back-end modules using AMQP based messaging. The compute-intensive data processing codes are executed on powerful and dedicated nodes on a compute cluster at Indiana University.

  4. Beyond STS: A research-based framework for socioscientific issues education

    Zeidler, Dana L.; Sadler, Troy D.; Simmons, Michael L.; Howes, Elaine V.

    2005-05-01

    An important distinction can be made between the science, technology, and society (STS) movement of past years and the domain of socioscientific issues (SSI). STS education as typically practiced does not seem embedded in a coherent developmental or sociological framework that explicitly considers the psychological and epistemological growth of the child, nor the development of character or virtue. In contrast, the SSI movement focuses on empowering students to consider how science-based issues reflect, in part, moral principles and elements of virtue that encompass their own lives, as well as the physical and social world around them. The focus of this paper is to describe a research-based framework of current research and practice that identifies factors associated with reasoning about socioscientific issues and provide a working model that illustrates theoretical and conceptual links among key psychological, sociological, and developmental factors central to SSI and science education.

  5. Nanoscale luminescent lanthanide-based metal–organic frameworks: properties, synthesis, and applications

    Nanoscale luminescent lanthanide-based metal–organic frameworks (NLLn-MOFs) possess superior optical and physical properties such as higher luminescent lifetime, quantum yield, high stability, high surface area, high agent loading, and intrinsic biodegradability, and therefore are regarded as a novel generation of luminescent material compared with bulk lanthanide-based metal–organic frameworks (Ln-MOFs). Traditional luminescent Ln-MOFs have been well studied; however, NLLn-MOFs taking the advantages of nanomaterials have attracted extensive investigations for applications in optical imaging in living cells, light-harvesting, and sensing. In this review, we provide a survey of the latest progresses made in developing NLLn-MOFs, which contains the fundamental optical features, synthesis, and their potential applications. Finally, the future prospects and challenges of the rapidly growing field are summarized

  6. Nanoscale luminescent lanthanide-based metal–organic frameworks: properties, synthesis, and applications

    Hu, Dongqin; Song, Yonghai; Wang, Li, E-mail: lwanggroup@aliyun.com [Jiangxi Normal University, Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Chemical Biology, Jiangxi Province, College of Chemistry and Chemical Engineering (China)

    2015-07-15

    Nanoscale luminescent lanthanide-based metal–organic frameworks (NLLn-MOFs) possess superior optical and physical properties such as higher luminescent lifetime, quantum yield, high stability, high surface area, high agent loading, and intrinsic biodegradability, and therefore are regarded as a novel generation of luminescent material compared with bulk lanthanide-based metal–organic frameworks (Ln-MOFs). Traditional luminescent Ln-MOFs have been well studied; however, NLLn-MOFs taking the advantages of nanomaterials have attracted extensive investigations for applications in optical imaging in living cells, light-harvesting, and sensing. In this review, we provide a survey of the latest progresses made in developing NLLn-MOFs, which contains the fundamental optical features, synthesis, and their potential applications. Finally, the future prospects and challenges of the rapidly growing field are summarized.

  7. Analytical Classification of Multimedia Index Structures by Using a Partitioning Method-Based Framework

    keyvanpour, Mohammadreza

    2011-01-01

    Due to the advances in hardware technology and increase in production of multimedia data in many applications, during the last decades, multimedia databases have become increasingly important. Contentbased multimedia retrieval is one of an important research area in the field of multimedia databases. Lots of research on this field has led to proposition of different kinds of index structures to support fast and efficient similarity search to retrieve multimedia data from these databases. Due to variety and plenty of proposed index structures, we suggest a systematic framework based on partitioning method used in these structures to classify multimedia index structures, and then we evaluated these structures based on important functional measures. We hope this proposed framework will lead to empirical and technical comparison of multimedia index structures and development of more efficient structures at future.

  8. A Framework for Simulating Turbine-Based Combined-Cycle Inlet Mode-Transition

    Le, Dzu K.; Vrnak, Daniel R.; Slater, John W.; Hessel, Emil O.

    2012-01-01

    A simulation framework based on the Memory-Mapped-Files technique was created to operate multiple numerical processes in locked time-steps and send I/O data synchronously across to one-another to simulate system-dynamics. This simulation scheme is currently used to study the complex interactions between inlet flow-dynamics, variable-geometry actuation mechanisms, and flow-controls in the transition from the supersonic to hypersonic conditions and vice-versa. A study of Mode-Transition Control for a high-speed inlet wind-tunnel model with this MMF-based framework is presented to illustrate this scheme and demonstrate its usefulness in simulating supersonic and hypersonic inlet dynamics and controls or other types of complex systems.

  9. A framework for designing a research-based "mathematics counsellor" teacher programme

    Niss, Mogens Allan; Thomas Jankvist, Uffe

    2015-01-01

    This article addresses one way in which decades of mathematics education research results can inform practice, by offering a framework for designing and implementing an in-service teacher education programme for upper secondary mathematics teachers in Denmark. The programme aims to educate a “task...... force” of so-called “maths counsellors”, i.e., mathematics teachers whose goal it is to help identify students with genuine learning difficulties in mathematics, investigate the nature of these difficulties, and carry out research-based interventions to assist the students in overcoming them. We present...... and discuss the various components of the programme, theoretical as well as practical, and account for how these make up a framework for designing a research-based “maths counsellor” teacher programme...

  10. Reining China's industrial energy-Challenges of promoting expedient measures in a Chinese actor environment

    This article aims to illuminate the complexities involved in efforts to influence China's energy future. It brings forth three observations. First: China's authoritarian appearance is deceptive. Second: learning about concealed but pivotal actors and their motivations is not easy but important. Third: technology diffusion is obstructed by differences in expectations. Three summarising messages conclude the presentation, noting that in order to progress one needs to (i) look beyond official consensus, (ii) address differences in technology perceptions and (iii) be watchful of the inconclusiveness of synthesised information-such as projections of the future. These findings are the result of an analytic and China-oriented exploration of three adjoining fields, i.e. of actors and their different roles in decision-making, of two recent energy futures studies, and of conceptual frameworks for understanding technology

  11. THE ACTORS OF A WIND POWER CLUSTER: A CASE OF A WIND POWER CAPITAL

    Jari M. Sarja

    2013-01-01

    Full Text Available Raahe is a medium-sized Finnish town on the western coast of Northern Finland. It has declared itself to become the wind power capital of Finland. The aim of this paper is to find out what being a wind power capital can mean in practice and how it can advance the local industrial business. First, the theoretical framework of this systematic review study was formed by searching theoretical information about the forms of industrial clusters, and it was then examined what kinds of actors take part in these types of clusters. Finally, the actors of the case area were studied. The core companies of wind power clusters are the wind turbine manufacturers, component manufacturers, developers of the wind farms, wind power operators, and service and maintenance organizations. Understanding of the wind power cluster structure may help decision makers to develop the best possible conditions for the emergence of clusters.

  12. THE ACTORS OF A WIND POWER CLUSTER: A CASE OF A WIND POWER CAPITAL

    Jari M. Sarja

    2013-06-01

    Full Text Available Raahe is a medium-sized Finnish town on the western coast of Northern Finland. It has declared itself to become the wind power capital of Finland. The aim of this paper is to find out what being a wind power capital can mean in practice and how it can advance the local industrial business. First, the theoretical framework of this systematic review study was formed by searching theoretical information about the forms of industrial clusters, and it was then examined what kinds of actors take part in these types of clusters. Finally, the actors of the case area were studied. The core companies of wind power clusters are the wind turbine manufacturers, component manufacturers, developers of the wind farms, wind power operators, and service and maintenance organizations. Understanding of the wind power cluster structure may help decision makers to develop the best possible conditions for the emergence of clusters.

  13. Actor-critic models of the basal ganglia: new anatomical and computational perspectives.

    Joel, Daphna; Niv, Yael; Ruppin, Eytan

    2002-01-01

    plans and actions, the reinforcement-driven dimensionality reduction framework may serve as a basis for basal ganglia actor models. We conclude with a short discussion of the dual role of the dopamine signal in RL and in behavioral switching. PMID:12371510

  14. A Java based framework for simulating peer-to-peer overlay networks

    Hasselrot, Daniel

    2005-01-01

    In the last few years many new structured overlay network protocols for peer-to-peer systems have appeared. Following that, the need to test and develop the protocols in a controlled environment arose and many different simulators were written, often only supporting a single protocol and designed with a specific simulation task in mind. We introduce a general component based framework in Java for writing peer-to-peer simulators, complete with methods for exporting and vis...

  15. History-based Explanatory Framework for Procreative Behaviour of Aboriginal People of Canada

    Romaniuk, Anatole

    2008-01-01

    EnglishThe transition from traditional high to modern low fertility is in the forefront of empirical and theoretical investigations in contemporary aboriginal demography.The challenging question therein remains why its fertility has started to decline a century or so after the rest of Canada, and why it continues to trail the latter by a considerable lag. The objective of this paper is to present a history-based explanatory framework of the childbearing behaviour of Canadian aboriginal people...

  16. Living PSA programme. A support framework for a risk-based decision making

    Risk (safety) management is understood as an important part of operational decision making policy in NPP Dukovany, located in the Czech Republic and equipped with four VVER 440/V213 reactors. Probabilistic Safety Assessment is playing a key role in risk management and that because a Living PSA programme, which has been established as a framework for all activities related to risk assessment with aim to support risk based decision-making in power plant Dukovany, will be introduced in this paper. (author)

  17. A unified framework for model-based clustering, linear regression and multiple cluster structure detection

    Galimberti, Giuliano; Manisi, Annamaria; Soffritti, Gabriele

    2015-01-01

    A general framework for dealing with both linear regression and clustering problems is described. It includes Gaussian clusterwise linear regression analysis with random covariates and cluster analysis via Gaussian mixture models with variable selection. It also admits a novel approach for detecting multiple clusterings from possibly correlated sub-vectors of variables, based on a model defined as the product of conditionally independent Gaussian mixture models. A necessary condition for the ...

  18. Statistical framework for detection of genetically modified organisms based on Next Generation Sequencing

    Willems, Sander; Fraiture, Marie-Alice; Deforce, Dieter; De Keersmaecker, Sigrid; Herman, Philippe; De Loose, Marc; Ruttink, Tom; Van Nieuwerburgh, Filip; Roosens, Nancy

    2016-01-01

    Because the number and diversity of genetically modified (GM) crops has significantly increased, their analysis based on real-time PCR (qPCR) methods is becoming increasingly complex and laborious. While several pioneers already investigated Next Generation Sequencing (NGS) as an alternative to qPCR, its practical use has not been assessed for routine analysis. In this study a statistical framework was developed to predict the number of NGS reads needed to detect transgene sequences, to prove...

  19. Implementing a framework for goal setting in community based stroke rehabilitation: a process evaluation

    Scobbie, L.; McLean, D.; Dixon, D; E. Duncan; Wyke, S.

    2013-01-01

    Background: Goal setting is considered ‘best practice’ in stroke rehabilitation; however, there is no consensus regarding the key components of goal setting interventions or how they should be optimally delivered in practice. We developed a theory-based goal setting and action planning framework (G-AP) to guide goal setting practice. G-AP has 4 stages: goal negotiation, goal setting, action planning and coping planning and appraisal and feedback. All stages are recorded in a patient-held reco...

  20. A collaborative knowledge management framework for supply chains: A UML-based model approach

    Jorge Esteban Hernández

    2008-12-01

    Full Text Available In the most general cases, collaborative activities imply a distributed decision-making process which involves several supply chain nodes. In this paper, by means of a literature review, and by also considering the deficiencies of existing proposals, a collaborative knowledge management UML-based framework supported is proposed. In addition, this proposal synthesizes existing knowledge, and it not only fulfils, but enriches, each component with the modeller’s own knowledge.