• 경영과학
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• 제21권2호
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• pp.145-165
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• 2004

Frequently. lots of organizations have experienced the value discrepancy between the expected value and the realized value from IS (information systems) investments. Being positive or negative the difference is. however, the existence of discrepancy itself is an evidence of less-than-sound management and measurement of IS projects. Analyzing the factors that cause such discrepancy has become an issue of scrutiny both in academia and in practice. We model which factors. as predictors, will affect the value discrepancy, as dependent variables. in IS investment. This research will establish and examine the research model. the validity of category classification of value discrepancy factors and the perceptual level of IS value discrepancy by survey research. As a result of the survey research. the strategic alignment. the proper system design for staffs. the project planning capability. and interdepartmental task cooperation are perceived as the factors that significantly affect the value discrepancy. And known as IS success factors such as the managerial support, the change management, the standardized process. and the competitive investment are not significant factors. The research findings will provide and emphasize useful implications which factors should be deliberately investigated in IS investment both for practices considering IS deployment and for academia.

• 대한수학회보
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• 제54권3호
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• pp.1081-1094
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• 2017

For a poset $P=(X,{\leq}_P)$, the linear discrepancy of P is the minimum value of maximal differences of all incomparable elements for all possible labelings. In this paper, we find a lower bound and an upper bound of the linear discrepancy of a product of two posets. In order to give a lower bound, we use the known result, $ld({\mathbf{m}}{\times}{\mathbf{n}})={\lceil}{\frac{mn}{2}}{\rceil}-2$. Next, we use Dilworth's chain decomposition to obtain an upper bound of the linear discrepancy of a product of a poset and a chain. Finally, we give an example touching this upper bound.

• 천문학회지
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• 제29권spc1호
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• pp.309-311
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• 1996

It is analysed the discrepancy about the coronal magnetic field between solar optic and solar radio using magnetic fibril concept with filling factor and fractal structure model. The magnetic field of $\~$ 100 G considered in solar optics is mean value in a large scale, and that of $\~$1000 G in solar should be the value of fine structures inside 'macro' loop.

• 대한수학회보
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• 제56권1호
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• pp.1-12
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• 2019

For a finite poset $P=(X,{\preceq})$ the fractional weak discrepancy of P, denoted $wd_F(P)$, is the minimum value t for which there is a function $f:X{\rightarrow}{\mathbb{R}}$ satisfying (1) $f(x)+1{\leq}f(y)$ whenever $x{\prec}y$ and (2) ${\mid}f(x)-f(y){\mid}{\leq}t$ whenever $x{\parallel}y$. In this paper, we determine the range of the fractional weak discrepancy of (M, 2)-free posets for $M{\geq}5$, which is a problem asked in [9]. More precisely, we showed that (1) the range of the fractional weak discrepancy of (M, 2)-free interval orders is $W=\{{\frac{r}{r+1}}:r{\in}{\mathbb{N}}{\cup}\{0\}\}{\cup}\{t{\in}{\mathbb{Q}}:1{\leq}t<M-3\}$ and (2) the range of the fractional weak discrepancy of (M, 2)-free non-interval orders is $\{t{\in}{\mathbb{Q}}:1{\leq}t<M-3\}$. The result is a generalization of a well-known result for semiorders and the main result for split semiorders of [9] since the family of semiorders is the family of (4, 2)-free posets.

• 대한치과기공학회지
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• 제23권1호
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• pp.45-53
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• 2001

This study was performed to investigate the effect of vent on the marginal discrepancy of PFM base metal castings. Eighteen identical wax patterns of a maxillary 3 unit anterior bridge were fabricated. Nine cases out of them were vented with $\phi$2.5mm sprue wax, for direct comparison as to the marginal discrepancy of the castings with the other non vented 9 ones. The mean value of marginal discrepancies of the vented castings was $85.02{\pm}25.57{\mu}m$, and that of the non vented was $163.21{\pm}69.88{\mu}m$ respectively. Statistical analysis revealed that marginal discrepancy of the vented casting was significantly reduced(p<0.05).

• 한국안광학회지
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• 제18권1호
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• pp.85-91
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• 2013

목적: 본 연구는 근시안에서 현성굴절검사(manifest refraction: MR)와 조절마비굴절검사(cycloplegic refraction: CR)값을 비교하여 연령과 근시도에 따라 차이가 있는지 알아보고자 하였다. 방법: 근시성 굴절이상을 가진 229명 ($25.3{\pm}11.9$세)을 대상으로 조절마비제(cyclogyl 1%) 점안 전과 후에 자각적 굴절검사를 시행하였다. 결과: 조절마비제 점안 전 후 평균굴절력을 비교 조사하였더니, 근시 0.19 D, 난시 0.02 D 감소하였고 난시방향은 1.85도 차이를 보였다. 근시도의 변화는 30~40대에서 가장 높게 나타났으며, 229명(458안) 중 근시도수에서 0.50 diopter(D) 이상의 차이를 보이는 경우는 73안(16%)으로 근시도가 높은 군일수록 오차율이 높게 나타났다. 결론: 현성굴절검사와 조절마비굴절검사 값을 비교해 본 결과 연령에 따른 근시도의 변화는 유의하지 않았으나, 근시도가 높은 군일수록 오차율이 유의하게 높은 것으로 나타났다.

• 대한전자공학회논문지
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• 제7권4호
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• pp.1-5
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• 1970

본 논문에서는 전차선형초광대역 FM 변별기의 결합저항식(변별기에 사용된 전송선의 특성임피단스)와의 오차가 ±10%이내일 때 전송선형 FM 변별기의 입력임피단스와 출력파형의 디스토숀에 미치는 영향을 고찰했다.

• 한국건강관리협회지
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• 제4권1호
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• pp.39-48
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• 2006

Background : Diabetes mellitus is chronic condition which needs patients' understanding of disease status and effort for disease control. We investigated whether the patients' estimation for blood glucose control was reliable or not comparing with their HbA1C value, Method: Among people who visited one health promotion center in Seoul from 1995 to 2003,those who answered as having diabetes mellitus on self reported questionnaire were identified. Subsequent question was whether his or her diabetes was well controlled or not. We compared these replies with their HbA1C values. When their HbA1C values were below7% with answering not well controlled, we analyzed if there was any variable which can predict the discrepancy. And the same analyze we did for the opposite situation. Result: A total of 1193 patients were eligible. Those who answered as well controlled formed32.9% of the group with HbA1C values above 7%. In the cases with well controlled though significantly associated with this discrepancy, Conclusion: Considerable proportion of diabetic patients' estimation for diabetic control status was not matched with glycemic control guideline. For successful management of diabetes mellitus, more efforts for patient education and communication skills are essential.

• 아동학회지
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• 제4권
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• pp.53-61
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• 1983

The purpose of this study was to investigate the effects of internal-external locus of control on level of aspiration in Korean Children. The locus of control was measured by means of the Nowicki & Strickland's "A Locus of Control Scale for Children (1973)". The level of aspiration was measured by "Throw Balls into the Basket Game" Sixty internal controlled children(30 girls and 30 boys) and 60 external controlled children(30 girls and 30 boys) were selected among 853 children in fifth grade. For the data analysis, two - way analysis of variance and t-test were applied, Pearson correlation coefficient was computed. The results of this study were as follows; 1. Goal discrepancy score were significantly higher in the internal controlled children than in the external controlled children. 2. Shift value were significantly higher in the external controlled children than in the internal controlled children. 3. School achievement were significantly higher in the internal controlled children than in the external controlled children. 4. There was no significant difference in the school achievement between the children who showed high goal discrepancy score and the children who showed low one. 5. There was no significant difference in the locus of control between girls and boys. 6. Goal discrepancy score were significantly higher in boys than in girls, but there was no significant difference in the shift value between girls and boys.

• 무역학회지
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• 제47권2호
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• pp.31-46
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• 2022

The purpose of this study is to measure the degree of discrepancies in the bilateral trade data between South Korea and its five major trade partners and to identify the key factors causing the discrepancies. By analyzing statistics based on the CIF/FOB ratio estimation and taking into consideration the trade flow via Hong Kong, the study finds that the discrepancies in South Korea's trade data with the US, Vietnam, and Japan are insignificant. In case of Hong Kong, however, the value of South Korea's import from Hong Kong is extensively inconsistent with Hong Kong's export to South Korea(i.e. the mirror data) while the value of South Korea's export to Hong Kong generally corresponds to its mirror data. Such discrepancies are caused by differences in recording re-exports, which are often found in the trade flow via entrepôt economics including Hong Kong. Meanwhile, discrepancies in reported bilateral trade flows between South Korea and People's Republic of China(PRC) remain relatively marginal. The discrepancy of statistics between South Korea as the exporter and PRC as the importer is mainly caused by the trade flow via Hong Kong. On the other hand, the discrepancy of statistics between South Korea as the importer and PRC as the exporter is assumably due to the differences in attribution of trade partners.