• 제목/요약/키워드: Functional Unit

검색결과 785건 처리시간 0.028초

명령어 버퍼를 이용한 최적화된 수퍼스칼라 명령어 이슈 구조 (An optimized superscalar instruction issue architecture using the instruction buffer)

  • 문병인;이용환;안상준;이용석
    • 전자공학회논문지C
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    • 제34C권9호
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    • pp.43-52
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    • 1997
  • Processors using the superscalar rchitecture can achieve high performance by executing multipel instructions in a clock cycle. It is made possible by having multiple functional units and issuing multiple instructions to functional units simultaneously. But instructions can be dependent on one another and these dependencies prevent some instructions form being issued at the same cycle. In this paper, we designed an issue unit of a superscalar RISC microprocessor that can issue four instructions per cycle. The issue unit receives instructions form a prefetch unit, and issues them in order at a rate of as high as four instructions in one cycle for maximum utilization of functional units. By using an instruction buffer, the unit decouples instruction fetch and issue to improve instruction ussue rate. The issue unit is composed of an instruction buffer and an instruction decoder. The instruction buffer aligns and stores instructions from the prefetch unit, and sends the earliest four available isstructions to the instruction decoder. The instruction decoder decodes instructions, and issues them if they are free form data dependencies and necessary functional units and rgister file prots are available. The issue unit is described with behavioral level HDL (lhardware description language). The result of simulation using C programs shows that instruction issue rate is improved as the instruction buffer size increases, and 12-entry instruction buffer is found to be optimum considering performance and hardware cost of the instruction buffer.

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저 전력 아키텍처 설계를 위한 새로운 자원할당 알고리즘 (A New Resource Allocation Algorithm for Low Power Architecture)

  • 신무경;인치호
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2000년도 추계종합학술대회 논문집(2)
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    • pp.329-332
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    • 2000
  • This paper proposed resource allocation algorithm for the minimum power consumption of functional unit in high level synthesis process as like DSP which is circuit to give many functional unit. In this paper, the proposed method though high level simulation find switching activity in circuit each functional unit exchange for binary sequence length and value bit are logic one value. To used the switching activity find the allocation with minimal power consumption, the proposed method visits all control steps one by one and determines the allocation with minimal power consumption at each control step.

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유닛모듈러 조립공구 개선을 위한 기능분석 연구 (A Study on the Analysis of Function for the Enhancement of the Tool for Assemble of Unit Modular)

  • 박남천;김균태;박수열;정인수
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2012년도 추계 학술논문 발표대회
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    • pp.239-241
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    • 2012
  • The major industrialized nations have continued to develop industrialized construction techniques based on automated production processes in factories, and are applying them to a wide range of building. However, the unit modular construction system has had a shorter history of development and application in Korea compared to advanced countries, and consequently, Korean modular builders have a relatively poor technical capacity. So this study is draw a conclusion on the target of priority improvement for idea creation. It study on the enhancement of the functionality of the tool for assemble of Unit Modular that choose the enhancement of the functionality through the analysis of function on the three-level of functional definition and classification, functional arrangement, functional appraisal.

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패션과 건축에 표현된 기능주의적 미니멀리즘 비교 (Comparison of the Functional Minimalism in Fashion and Architecture)

  • 박선지;임은혁
    • 한국의류학회지
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    • 제37권3호
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    • pp.247-259
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    • 2013
  • This study conceptually approaches and clearly compares the similarities and differences of fashion and architecture through a focus on their correlations. This study identifies the conceptual definitions of functional minimalism by an examination of function that represents the largest similarity between architecture and fashion. This study classifies the nature of functional minimalism and studies cases for each architectural classification in the areas of: the simplicity of a structure, unitarity pursuit of economic value, repeatability in an efficiency unit, reducibility stressing property, and multi-functional spatiality. The characteristics of functional minimalism fashion are distinguish as: simplicity in a structure that highlight structural lines in non-decorated design, unitarity pursuit of economic value represented in united process and pattern for its economic effect, repeatability in an efficiency unit represented through the repeated decoration of a functional unit, reducibility stressing a property that emphasizes property with a dominant design element through a highlight of the characteristics of materials and multi-functional spatiality that represents variability in clothes through an expansion of limited spatial function. This study approaches each discipline with a clear understanding of the differences between the two and suggests standards for a comparative study of architecture and fashion.

Functional Outcome after Reimplantation in Patients Treated with and without an Antibiotic-Loaded Cement Spacers for Hip Prosthetic Joint Infections

  • Michele Fiore;Claudia Rondinella;Azzurra Paolucci;Lorenzo Morante;Massimiliano De Paolis;Andrea Sambri
    • Hip & pelvis
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    • 제35권1호
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    • pp.32-39
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    • 2023
  • Purpose: A staged revision with placement of a temporary antibiotic-loaded cement spacer after removal of the implant is the "gold standard" for treatment of chronic prosthetic joint infection (PJI). It enables local delivery of antibiotics, maintenance of limb-length and mobility, easier reimplantation. However, bacterial colonization of spacers and mechanical complications can also occur. The aim of this study is to evaluate functional results and infection control in two-stage treatment of total hip arthroplasty (THA) PJI with and without a spacer. Materials and Methods: A retrospective review of 64 consecutive patients was conducted: 34 underwent two-stage revision using a cement spacer (group A), 30 underwent two-stage revision without a spacer (group B). At the final follow-up, functional evaluation of patients with a THA in site, without PJI recurrence, was performed using the Harris hip score (HHS). Measurement of limb-length and off-set discrepancies was performed using anteroposterior pelvic X-rays. Results: Most patients in group B were older with more comorbidities preoperatively. Thirty-three patients (97.1%) in group A underwent THA reimplantation versus 22 patients (73.3%) in group B (P<0.001). No significant differences in limb-length and off-set were observed. The results of functional evaluation performed during the final follow-up (mean, 41 months) showed better function in patients in group A (mean HHS, 76.3 vs. 55.9; P<0.001). Conclusion: The use of antibiotic-loaded cement spacer seems superior in terms of functional outcomes and reimplantation rate. Resection arthroplasty might be reserved as a first-stage procedure in patients who are unfit, who might benefit from a definitive procedure.

LINEAR FUCTIONALS ON $O_n$ ASSOCIATED TO UNIT VECTORS

  • Jeong, Eui-Chai;Lee, Jung-Rye;Shin, Dong-Yun
    • 대한수학회논문집
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    • 제15권4호
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    • pp.617-626
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    • 2000
  • We study the vectors related tro states on the Cuntz algebra Ο(sub)n and prove hat, for tow states $\omega$ and $\rho$ on Ο(sub)n with $\omega$│UHF(sub)n = $\rho$│UHF(sub)n, if ($\omega$(s$_1$), …, $\omega$(s(sub)n)) and ($\rho$(s$_1$),…, $\rho$(s(sub)n)) are unit vectors, then they and linearly dependent. We also study the linear functional on Ο(sub)n associated to a sequence of unit vectors in C(sup)n which is the generalization of the Cuntz state. We show that if the linear functional associated to a sequence of unit vectors with a certain condition is a state, then it is just the Cuntz state.

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IEC 61508 기준 PES 기반 전자연동장치의 기능 안전도 분석에 관한 연구 (A Study on the Functional Safety Analysis of PES-based Electronic Interlocking Unit according to IEC 61508)

  • 이명철
    • 전기학회논문지
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    • 제63권11호
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    • pp.1526-1532
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    • 2014
  • The Electronic Interlocking unit in railway signalling system is safety-related facilities to determine route and speed for train running. In particular, the SSI(Solid State Interlocking) is Electronic Interlocking unit for high-speed railway, and it performs safety-critical function by MPM(Micro-Processor Module). Meanwhile, MPM is composed of the PES(Programmable Electronic System)-based system, and the PES-based system in railway safety-related facilities should be implemented by complying with the safety requirements defined in IEC 62425 and IEC 61508. In this paper, we performed modeling of failure rate and reliability for MPM implemented by fault tolerance methods and analyzed functional safety for MPM. Moreover, we determined SIL(Safety Integrity Level) for MPM according to the safety requirements defined in IEC 61508 based on an analyzed functional safety.

Structure and Antibiotic Activity of Fragment Peptides of Antifungal Protein Isolated From Aspergillus giganteus

  • Shin, Song-Yub;Kang, Joo-Hyun;Lee, Dong-Gun;Jin, Zhe-Zhu;Jang, So-Youn;Kim, Kil-Lyong;Hahm, Kyung-Soo
    • Journal of Microbiology and Biotechnology
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    • 제9권3호
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    • pp.276-281
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    • 1999
  • In order to determine the functional region of the antifungal protein (AFP) isolated from Aspergillus giganteus responsible for growth inhibitory activity and the promotion of phospholipid vesicle aggregation, overlapping peptides covering the complete sequence of AFP were synthesized. The antibiotic activity against bacterial, fungal, and tumor cells, and the vesicle-aggregation activity of the synthetic peptides were investigated. The AFP functional sequence responsible for antibiotic and vesicle-aggregation activity was determined to be located within the region between AFP residues 19 to 32. AFP (19-32) exhibited an a-helical conformation in a cell membrane-like environment. AFP (19-32) displayed potent antibiotic activity against bacterial, fungal, and tumor cells without peptide toxicity as indicated by hemolysis. Accordingly, AFP (19-32) could be used as a good model for the design of effective antibiotic agents with powerful antibiotic activity yet without any cytotoxic effects against the host organism.

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Development of EMG-Triggered Functional Electrical Stimulation Device for Upper Extremity Bilateral Movement Training in Stroke Patients: Feasibility and Pilot study

  • Song, Changho;Seo, Dong-kwon
    • Physical Therapy Rehabilitation Science
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    • 제10권3호
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    • pp.374-378
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    • 2021
  • Objective: Bilateral movement training is an effective method for upper extremity rehabilitation of stroke. An approach to induce bilateral movement through functional electrical stimulation is attempted. The purpose of this study is to develop an EMG-triggered functional electrical stimulation device for upper extremity bilateral movement training in stroke patients and test its feasibility. Design: Feasibility and Pilot study design. Methods: We assessed muscle activation and kinematic data of the affected and unaffected upper extremities of a stroke patient during wrist flexion and extension with and without the device. Wireless EMG was used to evaluate muscle activity, and 12 3D infrared cameras were used to evaluate kinematic data. Results: We developed an EMG-triggered functional electrical stimulation device to enable bilateral arm training in stroke patients. A system for controlling functional electrical stimulation with signals received through a 2-channel EMG sensor was developed. The device consists of an EMG sensing unit, a functional electrical stimulation unit, and a control unit. There was asymmetry of movement between the two sides during wrist flexion and extension. With the device, the asymmetry was lowest at 60% of the threshold of the unaffected side. Conclusions: In this study, we developed an EMG-triggered FES device, and the pilot study result showed that the device reduces asymmetry.

전남대학교 기록관리의 단위업무와 조직기능 분류에 대한 분석 (An Analysis of Unit Task and Structural Function for Records Management at Chonnam National University)

  • 유완이;이명규
    • 한국기록관리학회지
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    • 제13권2호
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    • pp.179-199
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    • 2013
  • 이 연구는 대학기록의 효율적 관리와 편리한 이용을 위해 구축되어 있는 기록관리체계를 조사하여 분석하였다. 전남대학교의 기록물 현황, 단위업무, 기능과 조직에 대해 분석하였다. 그 결과 전남대학교 단위업무는 127개 처리과에 1,625개의 단위업무로 이루어진다. 교육과 관련된 단위업무가 85.91%를 차지하고 있다. 문제점으로는 단위업무 불균형적으로 편성되어 있다. 특정 분야에 단위업무가 너무 많거나 적은 것은 업무 분석 및 분류에 있어서 문제점을 내포하고 있다고 할 수 있다. 그리고 대학기능 분류가 불균형적으로 편성되어 있다. 대학에서 연구 분야에 대한 기능 분류는 적은 반면, 행정 분야에 대한 기능 분류가 세분화 되어 있다. 조직에 대한 기능과 업무가 적절하게 편성되어야 효율적인 기록물관리가 될 것이다.