• The Journal of Information Systems
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• v.28 no.4
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• pp.1-25
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• 2019

Purpose The purpose of this study is to investigate cognitive mechanism of goal relations (Single-goal vs. Multiple-goals) and to-do list (Packing vs. Unpacking) and also verify the role of self-efficacy in the perspective of motivation belief. The perspective of cognitive mechanism is related to the effects of how the relations of multitasking environments affects to facilitating relation or conflicting relations. In pursuit of a single goal, judgement of task importance can be facilitated by unpacking effect due to relations of strongly associated project components including to-do list. On the other hands, in pursuit of multiple goals, judgement of task importance can be conflicted due to mutually exclusive relations of multiple goals. Additionally, the cognitive mechanism can be regulated from the role of self-efficacy, which contributes to motivation belief on how much a person is confident in achieving given tasks. In the end this research is to identify self-efficacy as boundary condition in inhibiting the effects of facilitation and conflict. Design/methodology/approach This study conducted Two-way ANOVA (Packing/ Unpacking * Single-goal/ Multiple-goals) to explore the effects of cognitive mechanism on task importance. After that we performed Three-way ANOVA, 2 (To-do list: Packing/ Unpacking) * 2 (Goal relation: Single-goal/ Multiple-goals) * 2 (Self-efficacy: Low self-efficacy/ High self-efficacy) to verify the role of self-efficacy between goal relations and to-do list. Findings In the cognitive mechanism, the task importance is not significantly different between in packed and in unpacked condition in pursuit of a single goal. But multitasking with multiple goals causes goal conflict, which means packed condition indicates significantly higher task importance than unpacked condition. Additionally, for a group with low self-efficacy unpacking leads to conflicting relation, which implies that packed condition is more efficient strategy than packed condition. On the other hands, in pursuit of mulitple goals, either packing or unpacking has no distinctive effects on task importance. However, participants with high self-efficacy are no longer affected by facilitating relation and conflicting relation as well in pursuit of either a single goal or multiple goals as well.

• Journal for History of Mathematics
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• v.19 no.3
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• pp.1-20
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• 2006

The administrative service in Chosun Dynasty relating to mathematics was carried out by the middle class(中人) mathematicians selected by the official selection examination(取才). They belong to HoJo(戶曹) department and their ranks are GyeSa(計士), ByulJe(別提), HunDo(訓導 = mathematics teacher), and GyoSu(敎授 = mathematics professor). We call them SanWon(算員). HunDo and GyoSu played very important role although their ranks are low, for they educate SanWon and manage the official selection examination. Using JuHakSeonSaengAn(籌學先生案, List of mathematics teachers) and JuHakIpGyukAn(籌學入格案, List of successful candidates in the official selection examination for mathematics), we investigate HunDo and GyoSu in Chosun Dynasty.

• Korean Journal of Environment and Ecology
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• v.28 no.6
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• pp.664-696
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• 2014

This study was carried out to investigate the insect diversity in the islands of Daecheong-do and Socheong-do, Incheon, Korea. The survey was conducted six times throughout the day and night from June to October 2011. As a result, a total of 336 species, belonging to 78 families of 9 orders of insects were collected: 286 species, of 75 families in 9 orders from Daecheong-do and 106 species, 42 families and 8 orders from Socheong-do. 744 species, belonging to 103 families of 10 orders were identified in total including previous reference. Lepidoptera was the most commonly identified order with 439 species of 29 families (59%), and the next most commonly identified order was Coleoptera with 124 species of 27 families (16%). Among them, Copris tripartitus and Fabriciana nerippe, endangered species of wildlife fauna in Korea, were found in this study. Also, 2 species (Coenonympha oedippus, Lycaena dispar) belonging to IUCN Red List, 25 species belonging to Management of Exportable species, 5 species belonging to Endemic species, 6 species belonging to Korean Red List, 77 species belonging to Designated species and 2 species belonging to Climate-sensitive Indicator species were recorded. In this study, 147 species of 58 families and 43 species of 24 families were newly added in Daecheong-do and Socheong-do, respectively.

• The Journal of the Convergence on Culture Technology
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• v.8 no.2
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• pp.361-366
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• 2022

There are several ways to process large amounts of data. Depending on the processing method, there is a big difference in processing speed to create a large data list. Typically, to make a large data list, large data is converted into a normalized query, and the result of the query is stored in a List Map and converted into a printable form. This process occurs as a cause of lowering the processing speed step by step. In the process of storing the results of the created query as a List Map, the processing speed differs because the data is stored in a different format for each type of data. Through the simultaneous processing of GO language, we want to solve the problem of the existing difference in processing speed. In other words, it compares the results of GO language concurrency processing by providing how different and how it proceeds between the format contained in the existing List Map and the method of processing using concurrency in large data lists for faster processing. do.

• Journal of Korea Society of Digital Industry and Information Management
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• v.19 no.3
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• pp.221-232
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• 2023

In this paper, we propose a recommendation system based on the latent factor model using matrix factorization, which is one of the most commonly used collaborative filtering algorithms for recommendation systems. In particular, by introducing the concept of creating a list of recommended content and a list of non-preferred recommended content, and removing the non-preferred recommended content from the list of recommended content, we propose a method to ultimately increase the satisfaction. The experiment confirmed that using a separate list of non-preferred content to find non-preferred content increased precision by 135%, accuracy by 149%, and F1 score by 72% compared to using the existing recommendation list. In addition, assuming that users do not view non-preferred content through the proposed algorithm, the average evaluation score of a specific user used in the experiment increased by about 35%, from 2.55 to 3.44, thereby increasing user satisfaction. It has been confirmed that this algorithm is more effective than the algorithms used in existing recommendation systems.

• Journal of Food Hygiene and Safety
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• v.33 no.4
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• pp.310-315
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• 2018

Under the "Positive List System (PLS)," a uniform limit of 0.01 mg/kg is applied if the agricultural product does not have a Maximum Residue Limit (MRL) for a pesticide. The purpose of this research is to conduct residual pesticide monitoring on tropical fruits distributed in Gyeonggi-do to investigate the effects of PLS and provide basic materials for establishing MRLs of residual pesticides for tropical fruits produced in Korea. By inspecting 120 tropical fruits distributed in Gyeonggi-do according to Multi-class pesticide multi-residue methods, we detected sevenfruits from threekinds of banana, mangoes, and kiwis with six different residual pesticides. Azoxystrobin and chlorpyrifos were detected from bananas, chlorfenapyr from mangoes, and chlorothalonil, iprodione, and procymidone from kiwis. A single case of chlorfenapyr and chlorothalonil was found with a mango and a kiwi produced in Korea, respectively, and by applying PLS we found that they exceeded the MRL of residual pesticide. Thus, it is necessary to set the MRL of residual pesticides for tropical fruits produced in Korea.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.5 no.7
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• pp.1301-1307
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• 2001

Video retrieval system must offer representation frame list to do to do play from point that user wants. Representation frame list can get though cut detection point exactly. This paper dismembers frame to fixed block to cut detection point, and compare same block histogram cost of next time frame. If result that compare does not exceed thresold, detect next frame to cutting.

• Journal of Plant Biology
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• v.14 no.3
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• pp.47-59
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• 1971

As a continuation of part I, this paper deals with the classification of phytoplankton species collected from Chawol-do, Soya-do Pung-do of Kyonggi-Bay. One hundred and fortythree kinds of photoplankton from this area were identified and classified by Engler's system into 17 families, 47 genera, 129 species, 10 varieties and 4 forms, blonging to 2 phyla, 3 classes, 3 subclasses, 8 orders and 1 suborder. 3 families, 7 genera, 10 species, 3 varieties and 3 forms are added. To the list published in part I. Seven species and one form described in this paper are new to Korea.

• Research in Plant Disease
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• v.30 no.1
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• pp.1-12
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• 2024

Since the List of Plant Diseases in Korea (DisList) was first published in 1986, the 6th edition appeared 36 years later. In 2023, the 6.1 edition, a revised and improved version of the 6th edition, was released to the public on the web free of charge. The contents of DisList increased, with the number of hosts increasing from 437 taxa to 1,420 taxa and the number of disease species increasing from 1,539 to 6,680. Among these, tree diseases are 3,586 species and their hosts include 504 taxa, providing much help to experts who need them. Meanwhile, the importance of accurate disease names continues to grow with the legalization of tree care, but many disease names are still inappropriate or misused, causing confusion. Disease names that do not follow the naming regulations are still registered, and even if the same pathogen infects hosts of the same taxa, the disease names are given differently, and there are many disease names that do not indicate the characteristics of the disease. Also, there are diseases reported without Korean names. In order to make DisList better, the review committee for disease names should establish the regulations to review and register disease names, and establish a system to review new disease names before publishing papers.

• Animal Systematics, Evolution and Diversity
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• v.13 no.3
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• pp.199-210
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• 1997

The spider fauna of Kogum-do located in the south sea of Korea was investigated. As a result, the author presents a list of 82 species of 44 genera in 17 families and redescribes 2 species, Achaearanea oculipromiensis and Sittius avocator, newly known to Korea.