• Title/Summary/Keyword: explicit dependency

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The Relationship between Explicit/Implicit Dependency and Depression (외현적/암묵적 의존성과 우울과의 관계)

  • Park, Sunhee;Oh, Kyung Ja
    • Korean Journal of Cognitive Science
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    • v.27 no.4
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    • pp.599-618
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    • 2016
  • The relationship between dependent personality traits and depression has been widely studied in the field of psychology. However, the existing evidence is mixed and often contradictory, obscuring the precise nature of this relationship. Given that the most common method of measuring the construct of dependency has been to administer self-report instruments, it is possible that implicit dependency, another parameter of dependency that is distinct from explicit dependency measured via self-report, is confounding these results. The current study aimed to clarify the relationship between dependency and depression by comparing the effect of implicit and explicit dependency. Implicit dependency was measured via the Single Category-Implicit Association Test (SC-IAT), a test of implicit personality that has shown to have good validity and reliability in previous studies. In addition, we examined the effect of gender on this relationship, given the potential role of gender stereotype that may make male participants show lower levels of dependency when measured through self-report (vs. SC-IAT). Results showed that implicit and explicit dependency indeed had separate and distinct relationships, and the relationships depends on participants' gender. Among female participants, increased explicit dependency predicted depression only when implicit dependency was also elevated. In contrast, explicit dependency predicted depression regardless of the level of implicit dependency in male participants. These findings suggest that implicit and explicit dependency may be separate parameters capturing different aspects of dependent personality traits, further supporting the need to consider the implicit aspect of personality in personality assessment research. Implications and limitations of the current findings and directions for future research are discussed.

Rollback Dependency Detection and Management with Data Consistency in Collaborative Transactional Workflows (협력 트랜잭셔널 워크플로우에서 데이터 일관성을 고려한 철회 종속성 감지 및 관리)

  • Byun, Chang-Woo;Park, Seog
    • Journal of KIISE:Databases
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    • v.30 no.2
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    • pp.197-208
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    • 2003
  • Abstract Workflow is not appropriately applied to coordinated execution of applications(steps) that comprise business process such as a collaborative series of tasks because of the lacks of network infra, standard of information exchange and data consistency management with conflict mode of shared data. Particularly we have not mentioned the problem which can be occurred by shared data with conflict mode. In this paper, to handle data consistency in the process of rollback for failure handling or recovery policy, we have classified rollback dependency into three types such as implicit rollback dependency in a transactional workflow, implicit rollback dependency in collaborative transactional workflows and explicit rollback dependency in collaborative transactional workflows. Also, we have proposed the rollback dependency compiler that determines above three types of rollback dependency. A workflow designer specifies the workflow schema and the resources accessed by the steps from a global database of resources. The rollback dependency compiler generates the enhanced workflow schema with the rollback dependency specification. The run-time system interprets this specification and executes the rollback policy with data consistency if failure of steps is occurred. After all, this paper can offer better correctness and performance than state-of-the-art WFMSs.

Numerical investigations on the effect of tortuosity on friction factor in superconducting CICC configuration

  • Vaghela, Hitensinh;Lakhera, Vikas;Bhatt, Kunal;Sarkar, Biswanath
    • Progress in Superconductivity and Cryogenics
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    • v.23 no.4
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    • pp.49-55
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    • 2021
  • The Cable in Conduit Conductor (CICC) configurations are designed, tested and realized to make high field superconducting (SC) magnets. The evolution of CICC design makes it challenging to forecast thermo-hydraulic behavior. A common objective of thermo-hydraulic studies is to obtain the most reliable predictive correlation for friction factor in CICC geometries and to reduce the dependency on the experiment. So far, only the void fraction and Reynolds number have been considered in the predictive correlations in an explicit way. In the present paper, the CICC twisting pattern dependency, called tortuosity (τ), on the pressure drop prediction, has been assessed through a numerical simulation approach. The CICC twisting pattern with 6+1 petals (solid conductor in the present study) with different twisting pitches is mimicked in the numerical simulation for the range 100 ≤ Re ≤10000 and 1 < τ < 1.08 and a correlation for friction factor, f, has been proposed as a function of Re and τ.

A Design on Component Service Repository using Dynamic Resource Management and Algorithm on Configuration of Dependency (동적 자원관리를 활용한 컴포넌트 서비스 레포지토리 설계 및 의존성 형상 알고리즘)

  • Choi, Sang-Kyoon;Song, Young-Jae
    • The KIPS Transactions:PartD
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    • v.11D no.3
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    • pp.617-624
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    • 2004
  • Recent developments in component technology enable the construction of complex software systems by assembling together off-the-shelf components However, It is still difficult to develop efficient, reliable, and dynamically configurable component-based systems. Unspecified dependencies and behavior on components often has cause the source of the trouble. Therefore, component-based software systems must maintain explicit presentations of inter-component dependence and component requirements. In this paper, I describe the design on repository of component service to deployment, status reporting, and control in component service. Through the existing researches to customize component technology, I present the algorithm that supports dynamic dependency interface in order to reuse context of application.

A new methodology for modeling explicit seismic common cause failures for seismic multi-unit probabilistic safety assessment

  • Jung, Woo Sik;Hwang, Kevin;Park, Seong Kyu
    • Nuclear Engineering and Technology
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    • v.52 no.10
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    • pp.2238-2249
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    • 2020
  • In a seismic PSA, dependency among seismic failures of components has not been explicitly modeled in the fault tree or event tree. This dependency is separately identified and assigned with numbers that range from zero to unity that reflect the level of the mutual correlation among seismic failures. Because of complexity and difficulty in calculating combination probabilities of correlated seismic failures in complex seismic event tree and fault tree, there has been a great need of development to explicitly model seismic correlation in terms of seismic common cause failures (CCFs). If seismic correlations are converted into seismic CCFs, it is possible to calculate an accurate value of a top event probability or frequency of a complex seismic fault tree by using the same procedure as for internal, fire, and flooding PSA. This study first proposes a methodology to explicitly model seismic dependency by converting correlated seismic failures into seismic CCFs. As a result, this methodology will allow systems analysts to quantify seismic risk as what they have done with the CCF method in internal, fire, and flooding PSA.

Variable Structure Control Design Based on Eigenvalues Assignment of Sliding Mode (슬라이딩 모드 고유치 설정에 기반을 둔 가변구조 제어 설계)

  • Hong, Yeon-Chan;Lee, Tae-Bong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.6
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    • pp.2207-2213
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    • 2010
  • A new scheme for variable structure control design which is based on eigenvalues assignment of sliding mode is developed. In conventional methods, generally, specific type of system matrix like canonical or regular form is required to construct a switching surface. Furthermore, the methods are not explicit. The new method in this paper solved the problems. No special type of system matrix is required and very explicit. It is shown that the switching surface can be constructed and determined uniquely without any dependency on the system form. The proposed method is based on the fact that the dynamics of sliding mode is determined by system zeros. Finally, a numerical example is given to verify the validity of the results studied in this paper.

Mesoscale modelling of concrete for static and dynamic response analysis -Part 1: model development and implementation

  • Tu, Zhenguo;Lu, Yong
    • Structural Engineering and Mechanics
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    • v.37 no.2
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    • pp.197-213
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    • 2011
  • Concrete is a heterogeneous material exhibiting quasi-brittle behaviour. While homogenization of concrete is commonly accepted in general engineering applications, a detailed description of the material heterogeneity using a mesoscale model becomes desirable and even necessary for problems where drastic spatial and time variation of the stress and strain is involved, for example in the analysis of local damages under impact, shock or blast load. A mesoscale model can also assist in an investigation into the underlying mechanisms affecting the bulk material behaviour under various stress conditions. Extending from existing mesoscale model studies, where use is often made of specialized codes with limited capability in the material description and numerical solutions, this paper presents a mesoscale computational model developed under a general-purpose finite element environment. The aim is to facilitate the utilization of sophisticated material descriptions (e.g., pressure and rate dependency) and advanced numerical solvers to suit a broad range of applications, including high impulsive dynamic analysis. The whole procedure encompasses a module for the generation of concrete mesoscale structure; a process for the generation of the FE mesh, considering two alternative schemes for the interface transition zone (ITZ); and the nonlinear analysis of the mesoscale FE model with an explicit time integration approach. The development of the model and various associated computational considerations are discussed in this paper (Part 1). Further numerical studies using the mesoscale model for both quasi-static and dynamic loadings will be presented in the companion paper (Part 2).

Compiler Processor Trade-offs for Dynamic Scheduling of VLIW Instructions (VLIW명령어의 동적 스케줄링을 위한 컴파일러와 프로세서간 상호보완)

  • Sunghyun Jee
    • Journal of KIISE:Computer Systems and Theory
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    • v.31 no.5_6
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    • pp.279-287
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    • 2004
  • This paper describes a processor architecture, named Dynamically Instruction Scheduled VLIW (DISVLIW). The DISVLIW Processor architecture is designed for dynamic scheduling VLIW instructions using dependency information. The DISVLIW instruction format is augmented to allow dependency bit vectors to be placed in the same VLIW word. The DISVLIW processor dynamically schedules each instruction in long instructions using functional unit and dynamic scheduler pairs. Features such as explicit parallelism, balanced scheduling effort, and dynamic scheduling of VLIW instructions can be used to provide a sound frustructure for supercomputing. We simulate the DISVLIW processor architecture and show that the DISVLIW processor performs significantly better than the VLIW processor for a wide range of cache sites and across numerical benchmark applications.

On an improved numerical method to solve the equilibrium problems of solids with bounded tensile strength that are subjected to thermal strain

  • Pimpinelli, Giovanni
    • Structural Engineering and Mechanics
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    • v.15 no.4
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    • pp.395-414
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    • 2003
  • In this paper we recall briefly the constitutive equations for solids subjected to thermal strain taking in account the bounded tensile stress of the material. In view to solve the equilibrium problem via the finite element method using the Newton Raphson procedure, we show that the tangent elasticity tensor is semi-definite positive. Therefore, in order to obtain a convergent numerical method, the constitutive equation needs to be modified. Specifically, the dependency of the stress by the anelastic deformation is made explicit by means of a parameter ${\delta}$, varying from 0 to 1, that factorizes the elastic tensor. This parameterization, for ${\delta}$ near to 0, assures the positiveness of the tangent elasticity tensor and enforces the convergence of the numerical method. Some numerical examples are illustrated.

Performance Analysis for ABR Congestion Control Algorithm of ATM Switch using Self-Similar Traffic (자기 유사한 트래픽을 이용한 ATM 스위치의 ABR 혼잡제어 알고리즘의 성능분석)

  • Jin, Sung-Ho;Yim, Jae-Hong
    • The KIPS Transactions:PartC
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    • v.10C no.1
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    • pp.51-60
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    • 2003
  • One of the most important matters in designing network and realizing service, is to grip on the traffic characteristics. Conventional traffic prediction and analysis used the models which based on the Poisson or Markovian. Recently, experimental research on the LAN, WAN and VBR traffic properties have been pointed rut that they weren't able to display actual real traffic specificities because the models based on the Poisson assumption had been underestimated the long range dependency of network traffic and self-similar peculiarities, it has been lately presented that the new approach method using self-similarity characteristics as similar as the real traffic models. Therefore, in this paper, we generated self-similar data traffic like real traffic as background load. On the existing ABR congestion control algorithm, we analyzed by classify into ACR, buffer utilization. cell drop rate, transmission throughput with the representative EFCI, ERICA, EPRCA and NIST twitch algorithm to show the efficient reaction about the burst traffic.