• Korean Journal of Remote Sensing
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• v.25 no.3
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• pp.271-285
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• 2009

Multi-temporal satellite imagery can be changed into a transform image that emphasizes the changed area only through the application of various change detection techniques. From the transform image, an automated change detection model calculates the optimal threshold value for classifying the changed and unchanged areas. However, the model can cause undesirable results when the histogram of the transform image is unbalanced. This is because the model uses a single threshold value in which the sign is either positive or negative and its value is constant (e.g. -1, 1), regardless of the imbalance between changed pixels. This paper proposes an advanced method that can improve accuracy by applying separate threshold values according to the increased or decreased range of the changed pixels. It applies multiple threshold values based on the cumulative producer's and user's accuracies in the automated binary change detection model, and the analyst can automatically extract more accurate optimal threshold values. Multi-temporal IKONOS satellite imagery for the Daejeon area was used to test the proposed method. A total of 16 transformation results were applied to the two study sites, and optimal threshold values were determined using accuracy assessment curves. The experiment showed that the accuracy of most transform images is improved by applying multiple threshold values. The proposed method is expected to be used in various study fields, such as detection of illegal urban building, detection of the damaged area in a disaster, etc.

• Journal of Families and Better Life
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• v.34 no.3
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• pp.129-145
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• 2016

This study focuses on the differences in family values, which is a cause of family dissolution and conflicts of marriage immigrant women. This study was conducted on 441 women in Vietnam. It was done to explore their family values. Specifically, the following were examined: the overall family values and martial status of Vietnamese women; differences in their family values by region (northern, central, southern). The survey questionnaire consists of the following content: 'family perception'; 'gender-role values'; 'elderly parent support value'. The characteristics of family values of Vietnamese women are as follows. First, the scope of family perceived by them was relatively narrow. In particular, most of them didn't perceive the parents of a spouse as a familymember. Second, in terms of gender-roles, they perceived men and women as equal and didn't have strong perception of traditional gender roles. Third, they felt strongly about supporting elderly parents. The perception of supporting elderly parents is based on equal gender roles, instead of the paternalistic approach. They preferred financial support to living with parents. There were also differences in family values by region. Also, their values seemed to be the opposite of the ones well-known by region. In addition, their values were changing amid economic growth and modernization. Residents in Can Tho in the south - known to have open-minded Southeast Asian values - had the most patrilineal, traditional values with strong perception towards supporting elderly parents. Residents in Hanoi in the north - known to have heavy influence of Confucian culture - had non-traditional values with positive attitude towards liberal sex culture, divorce, and remarriage. Residents in Da Nang, a central region, had a mixture of northern and southern characteristics in terms of family values.

• Journal of Korean Institute of Industrial Engineers
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• v.20 no.1
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• pp.3-13
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• 1994

The problem of selecting the optimal target values in a canning process is considered for situations where there is a linear shift in the mean of the content of a can which is assumed to be normally distributed with known variance. The target values are initial process mean, length of resetting cycle and controllable upper limit. Profit models are constructed which involve give-away, rework, and resetting costs. Methods of finding the optimal target values are presented and a nemerical example is given.

• Journal of Korean Society for Quality Management
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• v.40 no.4
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• pp.589-598
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• 2012

Purpose: Determination of the importance values of quality attributes is very important to integrate the Kano model with QFD. A new method to determine the importance values of quality attributes is proposed. Methods: ASC(Average Satisfaction Coefficient) is proposed in order to determine the importance values of quality attributes. To evaluate the effectiveness of ASC, a case study of modern TV sets is conducted, and the performance of ASC is compared with direct importance evaluation and AHP pairwise comparisons. Results: The result of ASC application is similar with those of direct importance evaluation and AHP pairwise comparison. Conclusion: ASC is an effective instrument to determine the importance values of quality attributes. It doesn't need a cumbersome process like AHP pairwise comparison, and can be calculated using the data for the conventional Kano model.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.1
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• pp.225-235
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• 2021

The objective of this study is to identify the effects of ethical values reflected on zakat and Corporate Social Responsibility (CSR) on the financial performance of sharia banking in Indonesia. This study contributes to the Indonesia Financial Service Authority (Otoritas Jasa Keuangan (OJK) policies concerning the need for implementing ethical values in sharia banking and other sharia financial entities based on the philanthropic model, this study posits that firms undertaking zakat and charity are ethical firms. The population of this study is 8 sharia banks listed on the Indonesia Stock Exchange (IDX) in 2014-2018. The result of the study showed that zakat disclosure significantly affected financial performance. Moreover, ethical values that were proxied by CSR disclosure did not significantly affect financial performance. The limitation of the study is the limited number of the sample; therefore, it is expected that the future research adds other sharia financial entities and adds the dimension of management, sustainability, product, and the environment as benchmarks of ethical values. The originality of this study offers an additional explanation of the relationship between ethical values and performance by investigating zakat and CSR disclosure which is a unique factor in Indonesia.

• Bulletin of the Korean Mathematical Society
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• v.58 no.5
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• pp.1261-1278
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• 2021

Recently, a new kind of multiple zeta value of level two T(k) (which is called multiple T-value) was introduced and studied by Kaneko and Tsumura. In this paper, we define a kind of alternating version of multiple T-values, and study several duality formulas of weighted sum formulas about alternating multiple T-values by using the methods of iterated integral representations and series representations. Some special values of alternating multiple T-values can also be obtained.

• 제어로봇시스템학회:학술대회논문집
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• 1999.10a
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• pp.313-316
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• 1999

In this paper, a quantization algorithm by which the accumulative error can be prevented is presented. In digital control systems, the quantization cannot be avoided because of the finite word length of digital computers. The error due to quantization of the computed values may be tolerable in case of directly using them. In case of using the accumulated values, the error between sum of the original values and that of the quantized values becomes larger as the number of the values to be summed increases. Such an increasing accumulative error is critical for the control of precise NC machines, robots and autonomous vehicles. To solve this problem, a quantization algorithm without the accumulative error is presented. Basically, the algorithm is based on the feedback loop by which the accumulationive of the quantization error can be prevented. The error boundness of the proposed algorithm is proven and a computer simulation is performed to show the validity of the algorithm.

• Journal of Korean Philosophical Society
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• v.148
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• pp.327-356
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• 2018

The aims this paper to examine Nietzsche's criticism on Paul's transvaluation of values. First, I will examine Socrates' transvaluation of values through which, Greek culture was deconstructed. He opened a path for the transvaluation of values before Paul and Nietzsche and reorganized Greek culture around his own values. I will also analyze the 'will to power' hidden behind Socrates' transvaluation of values. Second, I will examine the essence of the Paul's transvaluation of values. I will trace how Paul, through his transvaluation of values, could become the center of Christianity and, in turn, control European Culture. I will also show the difference between the teachings of Jesus and the arguments of Paul. Third, I will look at the Nietzsche's criticism on Paul's transvaluation of values. The key to Nietzsche's criticism on Paul is to evaluate Paul's transvaluation of values in terms of his will to power. And I will also look at the problems of Nietzsche's criticism on Paul. Fourth, I will look at Nietzsche's transvaluation of values. It is accomplished in such a way that he makes Socrates' and Paul's transvaluation of value alters. His transvaluation of values will be critically examined for strength in life and world understanding over Socrates' and Paul's transvaluation of values.

• Communications for Statistical Applications and Methods
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• v.11 no.1
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• pp.49-58
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• 2004

In this talk we proposed an asymptotic test for dimensionality in the latent variable model for probabilistic principal component analysis with missing values at random. Proposed algorithm is a sequential likelihood ratio test for an appropriate Normal latent variable model for the principal component analysis. Modified EM-algorithm is used to find MLE for the model parameters. Results from simulations and real data sets give us promising evidences that the proposed method is useful in finding necessary number of components in the principal component analysis with missing values at random.

• Journal of the Korea Society of Computer and Information
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• v.25 no.7
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• pp.175-182
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• 2020

Fisher's classical method for combining independent p-values from continuous distributions is widely used but it is known to be inadequate for combining p-values from discrete probability distributions. Instead, the discrete analog of Fisher's classical method is used as an alternative for combining p-values from discrete distributions. In this paper, firstly we obtain p-values from discrete probability distributions associated with multi-sample location test data (Fisher-Pitman test and Kruskall-Wallis test data) by permutation method, and secondly combine the permutaion p-values by the discrete analog of Fisher's classical method. And we finally compare the combined p-values from both the discrete analog of Fisher's classical method and Fisher's classical method.