• Title/Summary/Keyword: outstanding branches

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Simple Recovery Mechanism for Branch Misprediction in Global-History-Based Branch Predictors Allowing the Speculative Update of Branch History (분기 히스토리의 모험적 갱신을 허용하는 전역 히스토리 기반 분기예측기에서 분기예측실패를 위한 간단한 복구 메커니즘)

  • Ko, Kwang-Hyun;Cho, Young-Il
    • Journal of KIISE:Computer Systems and Theory
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    • v.32 no.6
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    • pp.306-313
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    • 2005
  • Conditional branch prediction is an important technique for improving processor performance. Branch mispredictions, however, waste a large number of cycles, inhibit out-of-order execution, and waste electric power on mis-speculated instructions. Hence, the branch predictor with higher accuracy is necessary for good processor performance. In global-history-based predictors like gshare and GAg, many mispredictions come from commit update of the history. Some works on this subject have discussed the need for speculative update of the history and recovery mechanisms for branch mispredictions. In this paper, we present a simple mechanism for recovering the branch history after a misprediction. The proposed mechanism adds an age_counter to the original predictor and doubles the size of the branch history register. The age_counter counts the number of outstanding branches and uses it to recover the branch history register. Simulation results on the Simplescalar 3.0/PISA tool set and the SPECINTgS benchmarks show that gshare and GAg with the proposed recovery mechanism improved the average prediction accuracy by 2.14$\%$ and 9.21$\%$, respectively and the average IPC by 8.75$\%$ and 18.08$\%$, respectively over the original predictor.

A Branch Predictor with New Recovery Mechanism in ILP Processors for Agriculture Information Technology (농업정보기술을 위한 ILP 프로세서에서 새로운 복구 메커니즘 적용 분기예측기)

  • Ko, Kwang Hyun;Cho, Young Il
    • Agribusiness and Information Management
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    • v.1 no.2
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    • pp.43-60
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    • 2009
  • To improve the performance of wide-issue superscalar processors, it is essential to increase the width of instruction fetch and the issue rate. Removal of control hazard has been put forward as a significant new source of instruction-level parallelism for superscalar processors and the conditional branch prediction is an important technique for improving processor performance. Branch mispredictions, however, waste a large number of cycles, inhibit out-of-order execution, and waste electric power on mis-speculated instructions. Hence, the branch predictor with higher accuracy is necessary for good processor performance. In global-history-based predictors like gshare and GAg, many mispredictions come from commit update of the branch history. Some works on this subject have discussed the need for speculative update of the history and recovery mechanisms for branch mispredictions. In this paper, we present a new mechanism for recovering the branch history after a misprediction. The proposed mechanism adds an age_counter to the original predictor and doubles the size of the branch history register. The age_counter counts the number of outstanding branches and uses it to recover the branch history register. Simulation results on the SimpleScalar 3.0/PISA tool set and the SPECINT95 benchmarks show that gshare and GAg with the proposed recovery mechanism improved the average prediction accuracy by 2.14% and 9.21%, respectively and the average IPC by 8.75% and 18.08%, respectively over the original predictor.

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Antimicrobial, Antioxidant and Cytotoxic Activities of Dendropanax morbifera Léveille extract for mouthwash and denture cleaning solution

  • Kim, Ryeo-Woon;Lee, Sook-Young;Kim, Su-Gwan;Heo, Yu-Ri;Son, Mee-Kyoung
    • The Journal of Advanced Prosthodontics
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    • v.8 no.3
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    • pp.172-180
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    • 2016
  • PURPOSE. The purpose of this study was to analyze the antimicrobial, antioxidant activity and cytotoxicity of Dendropanax morbifera $L{\acute{e}}veille$ extract for assessing whether Dendropanax morbifera $L{\acute{e}}veille$ can be used for the development of natural mouthwash and denture cleaning solution. MATERIALS AND METHODS. The extract was obtained from branches of Dendropanax morbifera $L{\acute{e}}veille$. The solvent fractions were acquired by fractionating Dendropanax morbifera $L{\acute{e}}veille$ extract using n-hexane, ethyl acetate, chloroform and butanol solvent. Paper disc test was used to evaluate the antimicrobial and antifungal activity of Dendropanax morbifera $L{\acute{e}}veille$ extract and solvent fractions against Streptococcus mutans and Candida albicans. The analysis of antioxidant activity was carried out through DPPH radical scavenging assay. The cytotoxicity of Dendropanax morbifera $L{\acute{e}}veille$ extract was analyzed through MTT assay using normal human oral keratinocytes. RESULTS. Dendropanax morbifera $L{\acute{e}}veille$ extract showed antimicrobial activity against Streptococcus mutans and especially Candida albicans. The solvent fractions of Dendropanax morbifera $L{\acute{e}}veille$ showed strong antimicrobial activity against Streptococcus mutans and Candida albicans in n-hexane and butanol solvent fraction, respectively. Dendropanax morbifera $L{\acute{e}}veille$ extract also showed outstanding antioxidant activity. Butanol, ethyl acetate, and chloroform solvent fraction of Dendropanax morbifera $L{\acute{e}}veille$ tended to have increased antioxidant activity as the concentration increased. Dendropanax morbifera $L{\acute{e}}veille$ extract showed high cell survival rate in cytotoxicity test. CONCLUSION. Dendropanax morbifera $L{\acute{e}}veille$ extract turned out to have antimicrobial, antioxidant activity and cytophilicity. Based on these results, it is expected that Dendropanax morbifera $L{\acute{e}}veille$ is applicable as an ingredient for natural mouthwash and denture cleanser.

A Case Study of Information System Integration of KEB HanaBank using an Entrepreneurial Bricolage (브리콜라주 전략을 활용한 KEB하나은행의 전산통합 사례연구)

  • Park, SungJae;Lee, JungHoon;Kang, HyounKu
    • Journal of Korea Society of Industrial Information Systems
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    • v.24 no.5
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    • pp.27-39
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    • 2019
  • This study is a case study of KEB HanaBank's information system integration, which has achieved outstanding results based on successful M & A. As of the end of 2018, KEB HanaBank is one of the domestic commercial banks that showed 896 domestic and overseas branches, 12,881 employees, total assets of 326 trillion won, and net income of 1.9 trillion won. The purpose of this study is to provide implications through KEB Hana Bank's unique case and strategy for information system integration since M & A. To accomplish this, KEB HanaBank's information system integration related resource status, strategy, and performance are searched using various sources, and existing researches on resource dependency theory and entrepreneurial bricolage are reviewed. In the post merger integration process, organizations need to understand the status of their resources in terms of resource constraint theory in order to succeed in the information system integration. In resource constraints, for successful computational integration, a strategy based on entrepreneurial bricolage will be needed.

A Probe into the Laws Applicable to Foreign Religious Actions and the Actions of Foreign Religious Legal Persons : Observations Regarding Establishment and Initial Development in Taiwan (外國宗教(法人)在臺行為之準據法適用初探: 以設立與起始發展為研究核心)

  • Tsai, Peifen
    • Journal of the Daesoon Academy of Sciences
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    • v.34
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    • pp.203-238
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    • 2020
  • This paper focuses on legal risks and risk management affecting foreign religions or foreign religious legal persons in Taiwan. Beginning with an overview of relevant legal norms, types, processes, precautions, other such considerations, the purpose of this paper is to assist foreign religions when they first come to Taiwan for development. The contents of this paper can inform the adoption of a suitable methodology. If foreign religions want to come to Taiwan to develop, there may be several methods for their development: 1. Send Individual Missionaries to preach in Taiwan 2. Send Groups to Preach in Taiwan: 1) specify these groups as temples (or religious groups called "Lingtai (靈臺)"). 2) form civil associations or unincorporated religious groups 3) cases of temples that have not been registered (or specified as "Lingtai") 4) cases of offices and independent property and religious purposes that are not registered with the government or registered as temples (differentiated from item 3) 3. Establishing a research center in Taiwan: When foreign religions have established religious consortia in foreign countries, they can come to Taiwan to set up branches. 4. The establishment of legal persons in Taiwan: These are divided into "school legal persons", "religious corporate legal persons" and "religious consortium legal persons." Each of the above types has a different law applicable to it. This article will introduce the contents of each applicable law and important related matters such as the relevant funds, setting incentive rules for outstanding religious groups, and religious groups applying for foreigners. Due to foreign-related factors in the development and setting up of foreign religions in Taiwan, Act Governing the Choice of Law in Civil Matters Involving Foreign Elements is the parent law for solving conflicts regarding laws and regulations. The spirit of Article 2 and Italian Private International Law, Article 25, Paragraph 1 and so on, adopts the legalism of establishing legal personhood. It is clear that the national law regarding legal persons is the law under which it was incorporated. Therefore, foreign religious legal persons who encounter legal issues in Taiwan fall under the national law, which was established as domestic law. Therefore, internal matters regarding foreign legal persons are also applicable to domestic law.