• Title/Summary/Keyword: exception flow

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A Method to Construct Control Flow Graphs for Java Programs by Decoupling Exception Flow Analysis from Normal Flow Analysis (예외 흐름 분석을 정상 흐름 분석과 분리하여 Java프로그램에 대한 제어 흐름 그래프를 생성하는 방법)

  • 조장우;창병모
    • Journal of KIISE:Software and Applications
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    • v.31 no.5
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    • pp.643-650
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    • 2004
  • Control flow graph is used for Performing many Program-analysis techniques, such as data-flow and control-dependence analysis, and software-engineering techniques, such as program slicing and testings. For these analyses to be safe and useful, the CFG should incorporate the exception flows that are induced by exceptions. In previous research to construct control flow graph, normal flows and exception flows are computed at the same time, since these two flows are known to be mutually dependent. By investigating realistic Java programs, we found that the cases when these two flows are mutually dependent rarely happen. So, we can decouple exception flow analysis from normal flow analysis. In this paper we propose an analysis that estimates exception flows. We also propose exception flow graph to represent exception flows. And we show that the control flow graph that accounts for exception flows can be constructed by merging exception flow graph onto normal control flow graph.

Effect of Yongyanggaktang(YYG) on Regional Cerebral Blood Flow in Rats (영양각탕(羚羊角湯)이 뇌혈류량(腦血流量)에 미치는 영향(影響))

  • Kang Sung-Hyun;Yun Young-Gab
    • Herbal Formula Science
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    • v.10 no.1
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    • pp.105-112
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    • 2002
  • Yongyanggaktang has been used in oriental medicine as a therapeutic agent for cerebral disease and eclampsia for many years. The purpose of this study was to determine the effect of Yongyanggaktang and its exception of Cornu Saigae Tataricae(羚羊角) in YYG about regional cerebral blood flow(rCBF) in rats. 1. rCBF was increased by Yongyanggaktang in dose dependently. 2. rCBF was increased by exception of Cornu Saigae Tataricae(羚羊角) in YYG at high dosages. 3. rCBF was decreased by Yongyanggaktang pretreated propranolol. 4. L-NNA did not affect rCBF. 5.ODQ did not affect rCBF. Above the results. Yongyanggaktang relates to the symphathetic action.

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Simulation of industrial multiphase flows (공학적 관점에서의 다상유동 문제의 수치해석)

  • Han aehoon;Alajbegovic Ales;Seo Hyeoncheol;Blahowsky Peter
    • Proceedings of the KSME Conference
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    • 2002.08a
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    • pp.389-392
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    • 2002
  • In many industrial applications, multiphase flow analysis is the norm rather than an exception as compared to more-conventional single-phase investigation. This paper describes the implementation of the multiphase flow simulation capability in the general purpose CFD software AVL FIRE/SWIFT. The governing equations are discretized based on a finite volume method (FVM) suitable fur very complex geometry, The pressure field is obtained using the SIMPLE algorithm. Depending on the characteristics of the multiphase flow to be examined, the user can choose either the two-fluid model or an explicit interface-tracking model based on the Volume-of-Fluid approach. For truly 'multi'-phase flow problems, it is also possible to apply a hybrid model where certain phases are explicitly tracked while the other phases are handled by the two fluid model. In order to demonstrate the capability of the method, applications to the Taylor bubble flow simulations are presented.

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A 6 m cube in an atmospheric boundary layer flow -Part 1. Full-scale and wind-tunnel results

  • Hoxey, R.P.;Richards, P.J.;Short, J.L.
    • Wind and Structures
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    • v.5 no.2_3_4
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    • pp.165-176
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    • 2002
  • Results of measurements of surface pressure and of velocity field made on a full-scale 6 m cube in natural wind are reported. Comparisons are made with results from boundary-layer wind-tunnel studies reported in the literature. Two flow angles are reported; flow normal to a face of the cube (the $0^{\circ}$ case) and flow at $45^{\circ}$. In most comparisons, the spread of wind-tunnel results of pressure measurements spans the full-scale measurements. The exception to this is for the $0^{\circ}$ case where the roof and side-wall pressures at full-scale are more negative, and as a result of this the leeward wall pressures are also lower. The cause of this difference is postulated to be a Reynolds Number scale effect that affects flow reattachment. Measurements of velocity in the vicinity of the cube have been used to define the mean reattachment point on the roof centre line for the $0^{\circ}$ case, and the ground level reattachment point behind the cube for both $0^{\circ}$ and $45^{\circ}$ flow. Comparisons are reported with another full-scale experiment and also with wind-tunnel experiments that indicate a possible dependency on turbulence levels in the approach flow.

Bullock Creek Caves

  • Emberson, Rowan
    • Journal of the speleological society of Korea
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    • no.7
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    • pp.37-39
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    • 1998
  • The Bullock Creek Caves are located adjacent to the usually dry river bed of Bullock Creek, which reaches the sea about a kilometer north of Punakaiki. The caves have been comprehensively written up by Rodgers(l972). Under conditions of normal water flow Bullock Creek submerges where the stream meets limestone on the west side of thier Punakaiki syncline. In flood conditions it overflows the first submergence and progressively floods a series of smaller submergences down valley until it comes to the caves shown on the map. All these with the exception of Wazpretti Cave and Dry Valley Cave are probably more or less flooded during and after heavy rain.(omitted)

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A Study of Cave in NewZealand

  • Emberson, R.;Cody, A.;Kermode, L.
    • Journal of the speleological society of Korea
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    • no.8
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    • pp.19-42
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    • 1998
  • The Bullock Creek Caves are located adjacent to the usually dry river bed of Bullock Creek, which reaches the sea about a kilometer north of Punakaiki. The caves have been comprehensively written up by Rodgers(972). Under conditions of normal water flow Bullock Creek submerges where the stream meets limestone on the west side of their Punakaiki syncline. In flood conditions it overflows the first submergence and progressively floods a series of smaller submergences down valley until it comes to the caves shown on the map. All these with the exception of Wazpretti Cave and Dry Valley Cave are probably more or less flooded during and after heavy rain.(omitted)

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Efficient Construction of Over-approximated CFG on Esterel (Esterel에서 근사-제어 흐름그래프의 효율적인 생성)

  • Kim, Chul-Joo;Yun, Jeong-Han;Seo, Sun-Ae;Choe, Kwang-Moo;Han, Tai-Sook
    • Journal of KIISE:Computing Practices and Letters
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    • v.15 no.11
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    • pp.876-880
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    • 2009
  • A control flow graph(CFG) is an essential data structure for program analyses based on graph theory or control-/data- flow analyses. Esterel is an imperative synchronous language and its synchronous parallelism makes it difficult to construct a CFG of an Esterel program. In this work, we present a method to construct over-approximated CFGs for Esterel. Our method is very intuitive and generated CFGs include not only exposed paths but also invisible ones. Though the CFGs may contain some inexecutable paths due to complex combinations of parallelism and exception handling, they are very useful for other program analyses.

THE EFFECT OF DIFFERENT CARBOHYDRATE AND NITROGEN SOURCES ON THE UTILIZATION OF AMINO ACIDS IN THE SMALL INTESTINE OF SHEEP

  • Lee, N.H.;Armstrong, D.G.
    • Asian-Australasian Journal of Animal Sciences
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    • v.3 no.3
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    • pp.165-175
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    • 1990
  • This experiment was conducted to examine the effects of different carbohydrate and nitrogen source upon the utilization of amino acids in the small intestine of sheep. The results obtained are as follows: 1) For the quantities of total amino acid-N(TAA-N), essential amino acid-N(EAA-N) and nonessential amino acid-N(NEAA-N) passing at the duodenum and ileum except NEAA-N passing at the ileum were no significant differences (p>0.05) between diets. The quantities of NEAA-N passing at the ileum for the diets containing meat and bone meal were significantly higher (p>0.05) than the diets containing soybean meal. The mean values for the proportionate disappearance apparently digested TAA-N, EAA-N and NEAA-N within the small intestine for four diets were $0.692{\pm}0.0449$, $0.702{\pm}0.0132$ and $0.682{\pm}0.726$, respectively. 2) There were no significant differences (p>0.05) in duodenal individual amino acid flow between diets with the exception of aspartic acid and glycine. The amounts of each amino acid in duodenal digesta, expressed as a proportion of the amounts ingested for the four diets, were shown that there were net gains of EAA with the exception of arginine and NEAA with the exception of glutamic acid, glycine and praline prior to the small intestine. 3) Within the small intestine, there were no significant losses of each EAA (p>0.05) but significant losses of aspartic acid and glycine of NEAA between diets (p<0.01). The mean values of the proportionate losses of methionine, alanine and lysine within the small intestine were $0.816{\pm}0.04$, $0.767{\pm}0.04$ and $0.732{\pm}0.01$, respectively.

Tire Industry and Its Manufacturing Configuration

  • Lee, Young-Sik;Cpim;Lee, Jin-Kyu
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2000.04a
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    • pp.135-138
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    • 2000
  • This paper is intended to propose what manufacturing configuration (manufacturing planning and shop floor control) is suitable for the tire industry. Basically tire-manufacturing process is mixed-products, parallel-disconnected-flow-shop. Both throughput time and cycle tine are very short, the variety of tires is very high, the setup time is long, shop floor data reporting requirements is high, and there are many equipments and people working. And with no exception, tire industry also now confronts increasing requirements of delivery conformance with the above peculiar characteristics of tire manufacturing and changing market environments, this paper suggests, weekly master scheduling with no MRP is desirable and traditional kanban is right selection for shop floor control/scheduling. This paper describes why this configuration should be, using the manufacturing engineering principles and some new insights like four primitives of parallel flow shop. Generally known that shop with high parallel-product-mix and long setup time isn't good candidate for kanban. The four primitives of parallel flow shop explain why kanban is also useful scheduling technique in that environment.

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The Application of Geosynthetic Reinforced Soil Method in the Failed Slopes (붕괴사면 복구를 위한 보강토 공법의 적용)

  • Cho, Yong-Seong;Kim, You-Seong;Park, Inn-Joon
    • Proceedings of the Korean Geotechical Society Conference
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    • 2005.03a
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    • pp.171-178
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    • 2005
  • It is unavoidable to be formed slopes under special circumstance of Korea where 70% of the whole area are composed of mountains when civil engineering projects such as roads, site developments are increased with industrial development and horizontal expansions of urban area. Moreover, stability of the slopes become one of quite important issues under special meteorological characteristics that over two-thirds of annual average rainfall are concentrated in summer season and the localized torrential downpour are getting more frequent recently. Resulting in these circumstances, partial slope failures by debris flow of the high water content soils are occurred frequently in cutting soil slopes. In this case of debris flow slope failure, slope declination method are selected for their stable recovery because it is impossible to recover entirely by existing recovery methods. Seeding or special grass planting methods are followed separately without exception. The method by which entire recover with bigger stability ratio would be possible and grass planting work would be done simultaneously is developed. In this study, the results of the tests including a real construction history in a failed slope using developed method are described

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