• 한국수학교육학회지시리즈E:수학교육논문집
• /
• 제25권3호
• /
• pp.525-536
• /
• 2011

대학수학능력시험에서 자연계열의 수험생들이 선택하게 되는 수리 가형과 과학탐구가 아닌 다른 교과목을 선택하여 응시한 수험생이 이 공계열의 학과로 지원할 수 있는 대학입시과정에서, 교차지원제도는 그 도입 취지와는 다르게 대학 교육현장에서 부작용도 발생하고 있다. 개선 방법의 하나로, 우수한 신입생 유치와 함께 자연계열 성향의 수험생 확보라는 두 개의 큰 목표를 동시에 이루기 위하여 각 대학은 가산점을 다양한 방법으로 활용하고 있다. 이에 서울과학기술대학교 대학수학 교과목 학업성취도 사례 중심으로 가산점 제도의 필요성과 그 효과에 대하여 논의하고자 한다.

• 한국포장학회지
• /
• 제7권1호
• /
• pp.9-15
• /
• 2001

Top-to-bottom compression strength of corrugated fiberboard boxes is partly dependent on the load-carrying ability of the central panel areas. The ability of these central areas to resist bending under load will increase the stacking strength of the box. The difference of box compression strengths, among boxes which are made with identical dimensions and fabricated with same components but different flute sizes, is primarily due to difference of the flexural stiffness of the box panels. Top-to-bottom compression strength of a box is accurately predicted by flexural stiffness measurements and the edge crush test of the combined boards. This study was carried out to analyze the flexural stiffness, maximum bending force and maximum deflection for various corrugated fiberboards by experimental investigation. There were significant differences between the machine direction (MD) and the cross-machine direction (CD) of corrugated fiberboards tested. It was about 50% in SW and DW, and $62%{\sim}74%$ in dual-medium corrugated fiberboards(e.g. DM, DMA and DMB), respectively. There were no significant differences of maximum deflection in machine direction among the tested fiberboards but, in cross direction, DM showed the highest value and followed by SW, DMA, DMB and DW in order. For the corrugated fiberboards tested, flexural stiffness in machine direction is about $29%{\sim}48%$ larger than cross direction, and difference of flexural stiffness between the two direction is the lowest in DMA and DMB.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제18권1호
• /
• pp.1-14
• /
• 2024

Time-series forecasting is extensively used in the actual world. Recent research has shown that Transformers with a self-attention mechanism at their core exhibit better performance when dealing with such problems. However, most of the existing Transformer models used for time series prediction use the traditional encoder-decoder architecture, which is complex and leads to low model processing efficiency, thus limiting the ability to mine deep time dependencies by increasing model depth. Secondly, the secondary computational complexity of the self-attention mechanism also increases computational overhead and reduces processing efficiency. To address these issues, the paper designs an efficient multi-layer attention-based time-series forecasting model. This model has the following characteristics: (i) It abandons the traditional encoder-decoder based Transformer architecture and constructs a time series prediction model based on multi-layer attention mechanism, improving the model's ability to mine deep time dependencies. (ii) A cross attention module based on cross attention mechanism was designed to enhance information exchange between historical and predictive sequences. (iii) Applying a recently proposed sparse attention mechanism to our model reduces computational overhead and improves processing efficiency. Experiments on multiple datasets have shown that our model can significantly increase the performance of current advanced Transformer methods in time series forecasting, including LogTrans, Reformer, and Informer.

• Macromolecular Research
• /
• 제17권7호
• /
• pp.522-527
• /
• 2009

A photocrosslinkable polyphosphazene was used for molecular imprinting. We synthesized polyphosphazene (3) having urea groups for complexation with N-carbobenzyloxyglycin (Z-Gly-OH, template) and chalcone groups for cross-linking reaction. As substituents, 4-hydroxycha1cone (1) and N-(4-hydroxyphenyl)-N'-ethylurea (2) were prepared. Choloro groups of poly(dichlorophosphazene) were replaced by the sequential treatment with sodium salts of compounds 1 and 2, and trifluoroethanol. The template molecule was complexed with the urea groups on the polymer chains via hydrogen bonding. A thin polymer film was prepared by casting a solution of the complex of polymer 3 and the template in dimethylformamide on a quartz cell and irradiated with 365 nm UV light to yield a cross-linked film with a thickness of about $16{\mu}m$. The template molecules in the film were removed by Soxhlet extraction with methanol/acetic acid. The control polymer film was prepared in the same manner for the preparation of the imprinted polymer film, except that the template and triethylamine were omitted. In the rebinding test, the imprinted film exhibited much higher recognition ability for the template than the control polymer. We also investigated the specific recognition ability of the imprinted polymer for the template and its structural analogues. The rebinding tests were conducted using Z-Glu-OH, Z-Asp($O^tBu$)-OH, and Z-Glu-OMe. The imprinted film showed higher specific recognition ability for the template and the lowest response for Z-Asp($O^tBu$)-OH.

• 한국콘텐츠학회논문지
• /
• 제9권2호
• /
• pp.446-452
• /
• 2009

이 연구는 성공적인 토론을 위해 필요한 토론 능력의 구성요소는 무엇이며, 또 토론 실행 과정에서 단계별로 어떤 전략이 효과적인가에 대해 대학생들의 실제 토론 상황을 토대로 연구한 것이어서 학생들의 토론 능력 신장에 크게 기여할 것으로 확신한다. 토론 능력은 주어진 문제에 관한 인지적 지식을 가지고 언어적으로 논쟁을 하고, 서로 대립적인 주장을 펼치면서 바람직한 결론을 도출해 내는 행동적 요소를 포함하고 있다. 토론 구성요소로는 표현 능력, 자료 분석 능력, 논증 능력, 듣기 능력,조정과 협상 능력 등이 있다. 토론 전략은 준비단계에서의 전략과 실행단계에서의 전략으로 나누어 살펴 보았다. 준비과정에서의 전략으로는 규칙을 준수하며 말하기, 감정이입적 말하기, 역지사지적 말하기,책임감 있게 말하기 등이 있다. 실행단계에서의 전략은 다시 입론과정과 교차조사과정, 반박과정으로 나누어 제시하였다. 토론 능력을 갖춘 사람이 여기에서 밝힌 토론 전략들을 실제 토론 현장에서 활용한다면 자신의 의사소통 목적을 충분히 달성 할 수 있을 것으로 믿으며 이런 점에서 이 연구가 의의를 지닌다고 할 수 있다.

• 한국콘텐츠학회논문지
• /
• 제7권10호
• /
• pp.36-43
• /
• 2007

토론에서의 대응 전략과 그 기능 등을 고찰한 이 연구는 학생들의 표현능력과 이해능력을 신장시킬 수 있는 구체적이고 실용적인 교육 자료를 제공해 주고 갈등 상황을 정확하게 분석, 민첩하게 대응할 수 있는 응용 능력을 신장시키는 데 많은 도움을 줄 수 있다. 토론에서의 단계별 대응전략들을 살펴보면 입론과정에서의 전략 유형으로는 (1) 개념정의 형식, (2) 해결책 제시 형식, (3) 인과관계형식, (4) 사례제시형식이 있다. 반박과정에서의 전략 유형으로는 (1) 자문자답형식, (2) 주장대조형식, (3) 일부인정형식 이 있다. 교차조사과정에서의 전략 유형으로는 (1) 반문반박형식, (2) 일부동의반박형식이 있다. 이 연구를 교육 현장에서 활용한다면, 학생들의 의사소통능력과 협상 능력을 향상시킴은 물론 한층 더 성숙한 사고력과 판단력을 갖추게 함으로써 21세기형 리더십을 키우는 데 크게 기여할 것으로 확신한다.

• 한국산림과학회지
• /
• 제75권1호
• /
• pp.55-66
• /
• 1986

개암나무 10품종(品種)의 각(各) 특성(特性)에 대한 일반조합능력(一般組合能力)이 좋은 개체(個體)와 특수조합능력(特殊組合能力)이 좋은 교배조합(交配組合)을 선발(選拔)하기 위(爲)하여 완전대조교배(完全對照交配)를 실시(實施)하였다. ha 당(當) 인중생산량(仁重生産量)에서 일반조합능력(一般組合能力)이 가장 좋은 개체(個體)는 "Barcelona" 이었으며 특수조합능력(特殊組合能力)이 좋은 교배조합(交配組合)은 Kara${\times}$Badem, Badem${\times}$Barcelona, Sivri${\times}$Barcelona, Sirri${\times}$Barcelona, Palaz${\times}$Barcelona, Tombul${\times}$Kara, Barcelona${\times}$Sivri, Hukuken 2호(號)${\times}$Hukuken 3호(號), Hukuken 3호(號)${\times}$Hukuken 2호(號)이다. 교배조합간(交配組合間)의 결실율(結實率), 과우(果友)두께, 입중(粒重), 인중(仁重), 인중비(仁重比), 본당(本當) 혹은 ha당(當) 인중생산량(仁重生産量)의 특성(特性)에 대(對)하여도 비교분석(比交分析) 하였다.

• 대한물리의학회지
• /
• 제14권4호
• /
• pp.63-70
• /
• 2019

PURPOSE: This study examined the effects of bilateral ankle dorsiflexors-strengthening exercise on the paralytic tibialis anterior activity, balance ability, and gait function of patients with chronic stroke. METHODS: Nineteen patients with chronic stroke were assigned randomly to the experimental and control groups. All participants received general physical therapy for 60-minutes per session, five times a week, for 6 weeks. In addition, the experimental group (n = 9) performed bilateral ankle dorsiflexion muscle-strengthening training three times a week, 30 minutes per session, for six weeks. The control group (n=10) performed the paraplegic ankle dorsiflexion muscle- strengthening training in the same manner. Before and after the intervention, the paralytic tibialis anterior muscle activity, timed up and go test (TUG), and 10m walking test (10 MWT) were performed. RESULTS: Both groups showed significant improvement in the post-intervention muscle activity of the paralytic tibialis anterior, TUG, and 10MWT compared to that before the intervention (p<.05), but the differences between the two groups were not significant (p >.05). CONCLUSION: Bilateral ankle dorsiflexors strengthening exercise is an effective cross-training method to improve the muscle activity of the paraplegic tibialis anterior, balance ability, and walking function in chronic stroke patients.

• 대한물리치료과학회지
• /
• 제30권1호
• /
• pp.52-61
• /
• 2023

Background: The purpose of this study was to investigate the immediate effects of ankle elastic and non-elastic taping on postural balance and gait ability in subject with stroke. Design: Cross-sectional study Methods: Twenty-seven subjects with stroke participated in this study. The subjects performed to stand quietly for 30s on the balance platform and walking test with three different ankle taping conditions. The sway length, sway area and sway velocity of center of gravity (COG) displacement was measured to assess the postural balance and the timed up and go test, 10m walking test, 6 minutes walking test was measured to assess the gait ability. Repeated measured ANOVA was used to compare the postural balance parameters and gait ability according to three different ankle taping conditions. Results: Postural balance with non-elastic ankle taping was significantly improved compared to no ankle taping and elastic ankle taping condition(p<0.05). On the other hand, gait ability with elastic ankle taping was significantly increased compared to no ankle taping and non-elastic ankle taping condition(p<0.05). Conclusion: These findings suggest that an elastic ankle taping could effect to improve the gait ability, whereas a non-elastic ankle taping could effect to improve the postural balance in subject with stroke.

• International Journal of Reliability and Applications
• /
• 제3권3호
• /
• pp.125-132
• /
• 2002

Sometimes we have two groups of inbred lines and there are only interest in gca comparisons within two groups of lines of sizes$\P_1$ and $\P_@$, not between two groups. For example, suppose there two Lab, each of the 2 Labs have obtained the best line. For this purpose we now give a method of constructing block designs for diallel cross experiments and we will explain how to calculate efficiency. Then we show the efficiencies in the table.