• Asia pacific journal of information systems
• /
• 제18권3호
• /
• pp.123-145
• /
• 2008

Recently, as the information communication technology develops, the discussion regarding the ubiquitous environment is occurring in diverse perspectives. Ubiquitous environment is an environment that could transfer data through networks regardless of the physical space, virtual space, time or location. In order to realize the ubiquitous environment, the Pervasive Sensing technology that enables the recognition of users' data without the border between physical and virtual space is required. In addition, the latest and diversified technologies such as Context-Awareness technology are necessary to construct the context around the user by sharing the data accessed through the Pervasive Sensing technology and linkage technology that is to prevent information loss through the wired, wireless networking and database. Especially, Pervasive Sensing technology is taken as an essential technology that enables user oriented services by recognizing the needs of the users even before the users inquire. There are lots of characteristics of ubiquitous environment through the technologies mentioned above such as ubiquity, abundance of data, mutuality, high information density, individualization and customization. Among them, information density directs the accessible amount and quality of the information and it is stored in bulk with ensured quality through Pervasive Sensing technology. Using this, in the companies, the personalized contents(or information) providing became possible for a target customer. Most of all, there are an increasing number of researches with respect to recommender systems that provide what customers need even when the customers do not explicitly ask something for their needs. Recommender systems are well renowned for its affirmative effect that enlarges the selling opportunities and reduces the searching cost of customers since it finds and provides information according to the customers' traits and preference in advance, in a commerce environment. Recommender systems have proved its usability through several methodologies and experiments conducted upon many different fields from the mid-1990s. Most of the researches related with the recommender systems until now take the products or information of internet or mobile context as its object, but there is not enough research concerned with recommending adequate store to customers in a ubiquitous environment. It is possible to track customers' behaviors in a ubiquitous environment, the same way it is implemented in an online market space even when customers are purchasing in an offline marketplace. Unlike existing internet space, in ubiquitous environment, the interest toward the stores is increasing that provides information according to the traffic line of the customers. In other words, the same product can be purchased in several different stores and the preferred store can be different from the customers by personal preference such as traffic line between stores, location, atmosphere, quality, and price. Krulwich(1997) has developed Lifestyle Finder which recommends a product and a store by using the demographical information and purchasing information generated in the internet commerce. Also, Fano(1998) has created a Shopper's Eye which is an information proving system. The information regarding the closest store from the customers' present location is shown when the customer has sent a to-buy list, Sadeh(2003) developed MyCampus that recommends appropriate information and a store in accordance with the schedule saved in a customers' mobile. Moreover, Keegan and O'Hare(2004) came up with EasiShop that provides the suitable tore information including price, after service, and accessibility after analyzing the to-buy list and the current location of customers. However, Krulwich(1997) does not indicate the characteristics of physical space based on the online commerce context and Keegan and O'Hare(2004) only provides information about store related to a product, while Fano(1998) does not fully consider the relationship between the preference toward the stores and the store itself. The most recent research by Sedah(2003), experimented on campus by suggesting recommender systems that reflect situation and preference information besides the characteristics of the physical space. Yet, there is a potential problem since the researches are based on location and preference information of customers which is connected to the invasion of privacy. The primary beginning point of controversy is an invasion of privacy and individual information in a ubiquitous environment according to researches conducted by Al-Muhtadi(2002), Beresford and Stajano(2003), and Ren(2006). Additionally, individuals want to be left anonymous to protect their own personal information, mentioned in Srivastava(2000). Therefore, in this paper, we suggest a methodology to recommend stores in U-market on the basis of ubiquitous environment not using personal information in order to protect individual information and privacy. The main idea behind our suggested methodology is based on Feature Matrices model (FM model, Shahabi and Banaei-Kashani, 2003) that uses clusters of customers' similar transaction data, which is similar to the Collaborative Filtering. However unlike Collaborative Filtering, this methodology overcomes the problems of personal information and privacy since it is not aware of the customer, exactly who they are, The methodology is compared with single trait model(vector model) such as visitor logs, while looking at the actual improvements of the recommendation when the context information is used. It is not easy to find real U-market data, so we experimented with factual data from a real department store with context information. The recommendation procedure of U-market proposed in this paper is divided into four major phases. First phase is collecting and preprocessing data for analysis of shopping patterns of customers. The traits of shopping patterns are expressed as feature matrices of N dimension. On second phase, the similar shopping patterns are grouped into clusters and the representative pattern of each cluster is derived. The distance between shopping patterns is calculated by Projected Pure Euclidean Distance (Shahabi and Banaei-Kashani, 2003). Third phase finds a representative pattern that is similar to a target customer, and at the same time, the shopping information of the customer is traced and saved dynamically. Fourth, the next store is recommended based on the physical distance between stores of representative patterns and the present location of target customer. In this research, we have evaluated the accuracy of recommendation method based on a factual data derived from a department store. There are technological difficulties of tracking on a real-time basis so we extracted purchasing related information and we added on context information on each transaction. As a result, recommendation based on FM model that applies purchasing and context information is more stable and accurate compared to that of vector model. Additionally, we could find more precise recommendation result as more shopping information is accumulated. Realistically, because of the limitation of ubiquitous environment realization, we were not able to reflect on all different kinds of context but more explicit analysis is expected to be attainable in the future after practical system is embodied.

• 미술자료
• /
• 제97권
• /
• pp.69-86
• /
• 2020

국립중앙박물관 소장 <행행일기(幸行日記)>(구7152, 이하 <일기>로 약칭)는 1761년 4월 사도세자의 평양밀행을 기록한 문서이다. 당시 작성자는 평양의 하급 군관 함대일(咸戴一)(1738~1771)이며, 사도세자에게 능력을 인정받아 4월 7일부터 5월 1일까지 세자를 모셨다. <일기>는 해당 시기 구체적인 행적을 적고 있어, 역사에 기록되지 않았던 사도세자의 평양밀행 여정을 확인할 수 있다. <일기>는 다른 일기들과 구분되는 특징을 가지고 있다. 사용된 종이의 품질과 정연하게 쓰인 서체와 문장의 구성은 일반적인 일기와는 다르다. 이 <일기>는 개인이 쓴 일기와는 달리 완성된 문서에 가까운 형식을 갖추었다. <일기>는 그동안 모호하게 알려졌던 사도세자의 평양밀행을 기록한 만큼 내용 사실 여부를 우선 확인할 필요가 있다. 이를 위한 과정으로 먼저 함대일이라는 인물을 추적하였는데, 그의 가계(家系)는 <일기>에서 밝히고 있는 내용과 일치하였다. 또한 <일기>에서 사도세자가 글씨를 쓴 정황이 나오는데, 당시 쓴 예필진적(睿筆眞跡)이 오늘날에도 전해지고 있다. 따라서 <일기>에 실린 내용을 사실로 볼 수 있다. 그러나 밀행 당시 사도세자는 다양한 계층의 인물들을 만났지만, <일기>는 함대일과 사도세자 중심으로만 구성되어있다. 이 점은 당시에 원문에 해당하는 기록이 존재할 수 있으나, 오늘날 전해지는 <일기>는 이를 바탕으로 편집하였을 가능성을 보여준다. <일기>는 함대일의 아들 함정희(咸正禧)(1758~1817)에 의해 완성된 것으로 보인다. 먼저 부친 함대일이 영조(英祖)(재위 1724~1776) 재위 기간에는 사도세자와 관련된 기록을 남겼을 가능성이 낮다. 둘째로 정조 대 함정희가 사도세자의 예필과 일기를 바친 정황이 확인된다. 물론 당시 정조에게 바친 일기가 현재의 <일기>인지 여부는 불분명하다. 그러나 정조(正祖)(재위 1776~1800)의 주도로 사도세자 현창 사업이 진행된 시대적 상황을 고려하면 당시에 제작되었을 가능성은 충분하다. 그리고 예필과 일기를 바친 시기는 각각 현륭원 조성과 사도세자의 환갑과도 겹치는 점이 확인된다. 따라서 <일기>는 함정희가 본인의 입신(立身)을 위해 제작하였음을 짐작해볼 수 있다.

• 한국식품위생안전성학회지
• /
• 제1권1호
• /
• pp.77-95
• /
• 1986

In 1962 the governing bodies of FAO and WHO approved the establishment of a joint FAO/WHO Food Standards Programme, the creation of a jointly sponsored body to be known as the Codex Alimentarius commission to implement the Programme. It can reasonably be claimed that the Commission has assumad the leading role in establishing internation food standards throughout the world. The Codex Committee of Food Hygiene has received much advice and assistance from other international organization which have been working in this field for a number of years. In particular, it has received valuable background documentation from the International Commission on Microbiological Specifications for Foods(ICMSF) which was set up by the International Association of Microbiological Societies(IAMS), and also from the International Organization for Standardization (ISO). Nevertheless, in spite of the information supplied by governments and research bodies in this field, microbiological standards have proved to be a highly controversial subject from the point of view of Codex standards. When it is decided to establish a microbiological standard for a food or class of foods, the following technical and administrative aspects must be considered: 1) The standard should be based on factual studies and serve one or more of the following objectives: (1) to determine the conditions of hygiene under which the food should be manufactured; (2) to minimize the hazards to public health; (3) to measure the keeping quality and storage potential of the food 2) The standard should be attainable under practicable operating and commercial conditions and should not entail the use of excessive heat treatment or the additions of extra preservatives. 3) The standard should be determined after investigation of the processing operation. 4) The standard should be as simple and inexpensive to administer as possible, the number of tests being kept to a minimum. 5) Details of methods to be used for sampling, examining and reporting should accompany all published microbiological standards. 6) In establishing tolerance levels for the permissible number of defective samples, allowance should be made for sampling and other variations due to differences in the laboratory methods. The following additional points should be kept in mind: 1) It is not satisfactory to establish one set of microbiological standards for a miscellaneous group of foods, such as“frozen foods”or“precooked foods”. 2) Microbiological standards should be applied first to the more hazardous types of food on the basis of experience of expected microbiological levels, taking into account variations in composition, processing procedures, and storage. 3) When a standard is established, there should be a definite relationship between the standard and the hazard against which it is meant to protect the public. 4) The sensitivity, reliability, and reproducibility of the sampling and analytical methods should be compared in different laboratories and the methods to be used should be specified in detail as part of the standard. 5) Tolerances should be included in the standard to account for inaccuracies of sampling and analysis. 6) Standards should be applied on a voluntary basis before compliance is made mandatory.

• 보존과학연구
• /
• 통권25호
• /
• pp.119-132
• /
• 2004

Annals of the Joseon Dynasty is the authentic record of the historical facts and events taken place throughout the entire period of 472 years(25 generations, 1392~1863)described in a chronological order. The tremendous volume of the records contains the factual events taken place in almost all the fields of the Joseon Dynasty ranging from politics, economy to history of the dynasty. Not only because of its affluent contents but also with the precision of its records, it was designated as the National Treasure No. 151 in1973 by the Korean government and also registered as the Memory of the World by UNESCO in October 1997.This study is to report a exhaustive investigation results on the conservation state of annals of the Joseon Dynasty, especially Mt. Jeongjoksan edition, under the storage of the Kyujanggak in order to obtain the current condition, and thereby to estimate the any deterioration of the waxed volumes in the future. According to results of the investigation, we are going to verify damage causes of annals of the Joseon Dynasty, and to consider scientific conservation methods for the permanent preservation of invaluable cultural heritage. The major problem with the preservation of annals has arisen particularly from the deterioration of the waxed volumes of the Mt. Jeongjoksan edition. In order to provide for the counter measures for this problem, we have conducted twice investigations(first :1998~1999, second : 2003) to the internal and external conditions of waxed volumes(Annals of King Taejo~Annals of King Myeongjong).The result of the investigation has indicated that the paper quality of the some of the waxed volumes (Annals of King Taejong~Annals of King Sejong) is cracked and folded and the pages are imbedded to each other due to the hardened or congealed wax on the paper. Some of the pages are even getting moldy. And in order to detect as to whether“ there has been any deterioration progressed to the waxed books in the modern storage facility of the Kyujanggak equipped with constant temperature and humidity condition, the first investigation(1998~1999) and the second investigation(2003) have recorded the values of acidity, whiteness and moisture rate of the waxed paper, reporting an observation that there has been no difference on the measuring items. This indicates that no virtual deterioration has been progressed so far to the waxed volumes preserved in the Kyujanggak. Also, except for the causes of deterioration to the paper by insects and microorganisms, the major cause for the paper damage seems to the change of moisture of the paper caused from the alteration of the temperature and humidity of the storage environment. With this understanding in mind, we have conducted an environmental investigation on the three selected points of the storage in the aspects of the temperature, humidity, air current, $CO_2$,HCHO, and $SO_2$.It has been observed that the temperature stood at $16.9^{\circ}C~20.2^{\circ}C$ and the humidity was stable between 53%~56% during the period of the investigation. The concentration of the carbon monoxide and carbon dioxide of the storage were very similar to those in the air. These data lead to presume that there is no problem in the aspect of carbon oxidization. But the concentration of sulfur dioxide, hydrogen sulfide and formaldehyde of the storage were detected a little higher than those of standard. Therefore, we consider that it is necessary to ventilate the internal air of the store room by means of operating air purification devices.

• 한국언론정보학보
• /
• 제67권
• /
• pp.177-208
• /
• 2014

이 연구는 1920~1930년대 식민지 시기 신문의 사회면-사회적 보도가 정치적으로 부호화되고 해독되는 양식화의 메커니즘을 분석하고 있다. 민족국가와 정치부재, 그리고 주밀한 검열체제 하에서 신문은 비정치적 장르를 정치화하는 담론전략을 시도하며 사회면은 이 식민지적 맥락 안에서 정치적 언설로 구성되고 해독되었다. 이를 규명하기 위해 첫째 민간지의 사회면의 위상 및 편집방향, 둘째 사회면의 사회적 사실을 생산하기 위한 취재, 조직, 기자, 기사작법, 셋째 사회면을 둘러싼 신문과 기자의 부호화 전략 및 이에 공조하는 독자의 해독 규약을 분석했다. 사회면 또는 사회적 사실의 정치적 양식화는 객관적 사실보다 이면의 심리적 사실을 중시하고, 식민지 현실의 부정적 현상(現狀)에 주목하면서 운명공동체로서 민족적 비참을 형상화하며 뉴스를 극적 구조의 감정적 현실 서사(實事敍辭)로 구성하였다. 사회면은 민족공동체적 감각을 공유하고 유지하는 데 의미를 부여하며 이를 위해 민족적 감정을 동요하는 취재보도와 기사의 양식화를 이룬 것이다. 식민지에서는 모든 사회적 사실들이 정치적 문제로 환원된다는 점을 전제하면 사회면에 배치되는 사회적 사실들에 정치적 함의를 덧씌우기 위한 식민지 지식인/기자들의 전략과 전술, 의도는 식민지 저널리즘의 한 특수한 양상을 드러낸다.