호텔마케팅에 있어서 객실이용 현황분석에 따른 객실판매전략(客室販賣戰略)

유정봉 한국관광산업학회 1992 Tourism Research Vol.6 No.1

Recently, the sightseeting is being grown in a boomingly all around the world through the improvement of life's standard and increase of leisure time s well as changing of consumption pattern, both by development of economy and mechanical civilization. According to those situation Hotel industry has been enlarged and internalized. And thanks to various international events, Korea has appeared interrationally through the number of foreign tourists. Hotel industry has been to an important aspect that affect the development of sightseeing industry. But today, there too many hotels so that too many rooms are in the market. According to that result, there is illbalance among demand and supply law. This study tries to analyze the situation of Hotel and room increase, the avaliable rate of room occupancy, the avaliable of other subsidiary facilities those facts are very closely related oneanother through those analysis I took out several goals like bellow. First, Hotel and room increase should he carry out according to tourists supply. Second, the income should be made by the harmony of room and other subsidiary facilities in some cases subsidiary facilities are to create more profits. Third, more and more people in domestic are use hotel so percentage of domestic people in use of hotel is increasing due to economic development and life pattern so every hotel has to make service goods for those people. Finally, Hotel has to set up various marketting program which solve seasional problem especially off-session during summer and winter.

SFC로 설계된 공정제어에서 개선된 단일 시퀀스 제어 방법

유정봉,김민영,전호익,You, Jeong-Bong,Kim, Min-Young,Jeon, Ho-Ik 한국반도체디스플레이기술학회 2007 반도체디스플레이기술학회지 Vol.6 No.2

Programmable Logic Controller(PLC) is the most widely utilized and plays an important role in industrial control system. Among PLC languages, Sequential Function Chart(SFC) is performed in small scale industrial process. On programming by SFC, a single sequence is utilized to control the simple process. In this paper, we propose the method that describe the improved single sequence and confirm its feasibility through an actual example.

외식산업의 메뉴마케팅 전략에 관한 연구

유정봉 한국관광산업학회 1999 Tourism Research Vol.13 No.1

PLC 출력 Unit의 출력 점수 확장에 관한 연구

유정봉,전호익,남상엽,You Jeong-Bong,Jeon Ho-Ik,Nam Sang-Yep 대한전자공학회 2005 電子工學會論文誌-SC (System and control) Vol.42 No.3

PLC는 공장자동화 설계에서 가장 많이 사용되고 있으며, PLC 언어에 대한 연구도 활발히 이루어지고 있다. 본 논문에서는 PLC를 사용한 공장 자동화 설계에서 제어하고자 하는 출력 기기의 수가 증가되었을 때 출력을 확장하는 방법을 제안한다. 기본 베이스에 출력 유닛을 더 이상 장착할 수 없는 상태에서 출력 점수를 $2{\sim}3$점 확장하고자 한다면, 증설베이스와 파워서플라이, 증설케이블 및 출력 유닛을 별도로 장착하여야 한다. 그러면 비용이 상당히 추가되어야 한다. 본 논문에서는 출력을 소량으로 확장하는 방법을 제안한다. 즉, 출력 유닛의 접점을 입력받아 디코딩하는 확장모듈과 인코딩 및 디코딩하여 최종 출력접점으로 확장하는 프로그램 모듈을 설계하고, 실험을 통해 그의 타당성을 확인하였다. PLC is the most widely utilized among many sorts of existing controller for the design of process control system, and study about a PLC language is performed actively. In this paper, we proposed the method that we increase an output points when increased of the output machine which is going to control it in the FA design that used PLC. Output point is going to be extended with 2-3 points in the state that cannot equip output unit in basic base any more. Then an extension base, a power supply, an extension cable and an output unit must be equipped particularly. Then a cost must be added very much. This paper propose the method which extended an output in a small quantity. We designed the expansion unit that received the points of output unit and decoded the signal and the program module that finally extended output points by encoding and decoding, and we confirmed his feasibility through a experiment.

Study On Design of Encoding Module for PLC input

유정봉,You, Jeong-Bong The Korean Institute of IIIuminating and Electrica 2005 조명·전기설비학회논문지 Vol.19 No.3

여러 제어기 중에서 PLC가 공장자동화 설계에서 가장 많이 사용되고 있으며, PLC 언어에 대한 연구도 활발히 이루어지고 있다. 본 논문에서는 PLC를 사용한 공장자동화 설계에서 입력기기의 수가 증가되었을 때 입력을 확장하는 인코딩 모듈을 제안한다. 기본 베이스에 입력 유닛을 더 이상 장착할 수 없는 상태에서 입력 점수를 $2\~3$점 확장하고자 한다면, 증설 베이스와 파워서플라이, 증설케이블 및 출력 유닛을 별도로 장착하여야 한다. 그러면 비용이 상당히 추가되어야 한다. 본 논문에서는 입력을 소량을 확장할 수 있는 입력 인코딩 모듈을 제안하고, 시뮬레이션을 통해 그의 타당성을 확인하였다. Programmable Logic Controller(PLC) is the most widely utilized among many sorts of existing controller for the design of factory automation control system, and study about a PLC language is peformed actively. In this paper, we proposed the encoding module that we increase input points when increased of the input machine which is going to control it in the FA design that used PLC. Input point is going to be extended with 2-3 points in the state that cannot equip input unit in basic base any more. Then an extension base, a power supply, an extension cable and an output nit must be equipped particularly. Then a cost must be added very much. This paper proposed the encoding module which extended an input in a small quantity, and we confirmed a feasibility through a simulation.

SFC로 기술된 매니지먼트 스텝에 의한 개선된 인터록의 실현

유정봉,You, Jeong-Bong 한국조명전기설비학회 2005 조명·전기설비학회논문지 Vol.19 No.3

PLC는 산업용 제어시스템에서 가장 많이 사용되며, 중요한 역할을 하고 있다. 이러한 PLC에서 사용되는 언어에 대한 연구도 활발히 이루어지고 있다. PLC에서는 LD언어가 가장 많이 사용되고 있다. LD언어는 데이터의 흐름을 알 수 없고, 유지보수가 어렵다. 반면에 SFC는 제어의 흐름을 이해하기 쉽고 유지보수가 용이하지만 조건과 인터록 기술에 문제점이 있다. 본 논문에서는 매니지먼트 스텝을 사용한 인터록의 기술에 대한 방법을 제안하였고, 실례를 통해 그의 타당성을 확인하였다. Programmable Logic Controller(PLC) is the most widely utilized and plays an important role in industrial control system. The study about a PLC language is performed actively. Ladder Diagram(ID) is the most widely used in PLC. In is not suitable for describing a complex sequential logic and is very difficult to grasp the sequential flow of control logic and has the disadvantage for a maintenance. On the other hand, Sequential Function Chart(SFC) is very easy to grasp the sequential flow of control logic and has the compatability for a maintenance but has the disadvantage for describing a condition and a interlock logic. In this paper, we propose the method that describe the interlock logic using management step, and confirm his feasibility through a actual examples.

서비스업 종사자들의 여가실태와 개선방안에 관한 연구 : 외식업 종사자들을 중심으로

유정봉 한국관광산업학회 1997 Tourism Research Vol.11 No.1

사물인터넷 환경에서 상황인식 개선을 위한 다중센서의 이벤트 데이터 가중치 부여 방안

유정봉,서동혁 한국전자통신학회 2022 한국전자통신학회 논문지 Vol.17 No.3

In context awareness using multiple sensors, when using sensor data detected and sent by each sensor, it is necessary to give different weights for each sensor. Circumstances in the real world are varied and variable. A method of assigning weights to the data sent by each sensor for context awareness can also be considered in various ways. Even if the same type of sensor is configured for the same situation, it is sometimes necessary to assign different weights due to other secondary factors. It is inevitable to assign weights to events in the real world, and it can be said that a weighting method that can be used in a context awareness system using multiple sensors is necessary. In this study, we propose a weighting method for each sensor that reports to the host while the sensors continue to detect over time. In most IoT environments, the sensor continues the detection activity, and when the detected value shows a change pattern beyond a predetermined range, it is basically reported to the host. This can be called a kind of data stream environment. A weighting method was proposed for sensing data from multiple sensors in a data stream environment, and the new weighting method was to select and assign weights to data that indicates a context change in the stream.

Fnet 통신을 이용한 효울적인 출력 제어

유정봉 대한전기학회 2011 정보 및 제어 심포지엄 논문집 Vol.2011 No.4

회계정보의 유용성과 회계기준의 상관관계에 대한 고찰

유정봉 명지대학교 교지편집위원회 1982 明大 Vol.13 No.-