• Title/Summary/Keyword: Delivery service

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An Efficient Heuristic to Solve Vehicle Routing Problem for Container Shuttle Service (컨테이너 셔틀 서비스를 위한 차량 경로 문제의 근사적 해법)

  • Shin, Jae-Young;Oh, Sung-Inn;Park, Jong-Won
    • Journal of Navigation and Port Research
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    • v.33 no.8
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    • pp.583-588
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    • 2009
  • Generally, the container road transportation can be divided into three types; short distance, long distance and shuttle transportation. Specially, the shuttle service occurs several amounts of container which is same as O/D pairs. Also container vehicle can be divided into three types according to the chassis types of vehicle; only 20-feet container, only 40-feet container and combined chassis trailer. Combined chassis trailers can load two 20-feet containers or one 40-feet container. This paper deals with Vehicle Routing Problem (VRP) for delivering containers considering shuttle service. This problem is similar to the previously studied Shin and Oh (2008), but the characteristics of shuttle service must be considered additionally. We formulate the container shuttle transportation planning problem using combined chassis trailers based on VRP with pick-up and delivery which can visit each node more than one time, and propose an efficient solution procedure.

Adaptive Inter-Agent Communication Protocol for Large-Scale Mobile Agent Systems (대규모 이동 에이전트 시스템을 위한 적응적 에이전트간 통신 프로토콜)

  • Ahn Jin-Ho
    • The KIPS Transactions:PartA
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    • v.13A no.4 s.101
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    • pp.351-362
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    • 2006
  • This paper proposes an adaptive inter-agent communication protocol to considerably reduce the amount of agent location information maintained by each service node and the message delivery time while avoiding the dependency of the home node of a mobile agent. To satisfy this goal, the protocol enables each mobile agent to autonomously leave its location information only on some few of its visiting nodes. Also, it may significantly reduce the agent cache updating frequency of each service node by keeping the identifier of the location manager of each agent in the smart agent location cache of the node. Simulation results show that the proposed protocol reduces about $76%{\sim}80%$ of message delivery overhead and about $76%{\sim}79%$ of the amount of agent location information each service node should maintain compared with the traditional one.

A Study on the Regulation for Mental Healthcare Facility and Delivery System in China (중국의 정신의료시설 및 지원체계에 관한 법제도 연구)

  • Gao, Wen Mei;Yun, Woo Yong;Chai, Choul Gyun
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.24 no.1
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    • pp.7-14
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    • 2018
  • Purpose: This study analyzes mental healthcare delivery services and types of facilities, the status of installation and operation, and planning standard. The purpose of the study is to propose a basic data for the performance of related research and work tasks, along with an understanding of the Chinese mental healthcare facility type and support system. Furthermore, it will show a lack of current function management as the changes of mental health concept and demand for services increases, and it is intended to provide implications for the construction of mental health facilities. Methods: This study was conducted by a research on law and regulation of China's mental healthcare delivery service system and mental healthcare facility. The analyzed data are the national standard GB, the optional national standard GB/T, the building construction standard JGJ, and the report issued by the Health Planning and Development Committee. Results: At present mental healthcare facility construction in China is in the period of rapid development and it exposes the layout of medical facilities, which is not currently reasonable and the service does not reach the designated position and so on. Overall, it requires more detailed guidelines to enhance the quality of mental healthcare service. Implications: It is expected that the research of this paper will provide effective reference for future research on Chinese Mental healthcare system and facilities, and can promote construction of Chinese mental healthcare facility theory in perfect condition.

An Efficient MANET Routing Protocol for the Drone Delivery Communication Network System (드론 택배 통신망시스템을 위한 효율적인 MANET 라우팅 프로토콜)

  • Jo, Jun-Mo
    • The Journal of the Korea institute of electronic communication sciences
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    • v.10 no.9
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    • pp.973-978
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    • 2015
  • The drone delivery service as a new important business is emerging worldwide. American DHL parcel service is already running the delivery business using drones, and the Google, Amazon, and china's Alibaba, Baidu are also preparing for the same business. However, there are some problems in security and safety since the heavy parcels flies over the people walking down streets, so many things must be considered. The problems can be solved by communicating among drones to avoid collision. Therefore, the efficient network performance is essential, and to resolve the problem, in this paper, an efficient routing protocol is suggested by the Opnet simulator. The drone intercommunication network of MANET is designed and simulated for the efficient routing protocol.

SOME CONSIDERATIONS ON ESTABLISHING DENTAL CARE DELIVERY SYSTEM AND DENTAL SPECIALTY SYSTEM IN KOREA (의료전달체계(醫療傳達體系)와 전문치의제(專門齒醫制)에 관(關)한 소고(小考))

  • Han, Young-Chul
    • Restorative Dentistry and Endodontics
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    • v.24 no.4
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    • pp.639-646
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    • 1999
  • The dental care delivery system and the dental specialty system have a very close relationship each other. Compared to Korea. Western European countries with predominant public sector in dental service have recognized merely 2 or 3 dental specialties, while North American countries with predominant private sector, 8 or 9 ones. It is desirable to adopt the dental specialty system as soon as possible in Korea to encourage scientific development in various dental specialties and qualitative advance in dental service. We, however, have to establish equitable dental care delivery system which can use limited dental resources efficiently as follows. 1. clarifying the different roles in assignments between general dentists and specialists by the amendment of the related laws such as the Medical Act and establishing the organic patient-referral system. 2. adopting the dental specialty system and expanding personnel and equipments so that the dental college hospitals, especially dental divisions of general hospitals, night function as secondary care facilities with specialties. 3. determining the size of dental specialists according to the national needs for dental specialized service's, whose number is to be not more than 10% of the total dentists. 4. transferring the function of accredating dental specialists to the efficient, self-controlled professional organization such as the Korean Dental Association rather than putting it under the governmental control. 5. conducting a comprehensive review of specialty education and practice for re-recognition, and maintaining competence of specialists by re-accredating them periodically. I expect this article to contribute to further discussion about the dental specialty system in Korea in productive and practical way. I am sure that we can Establish this system in the near future when people in every walks of life-the academic circle, the press, the authority concerned, consumer groups and the Korean Dental Association-take part in the discussion with special concern.

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A Study on the Education Plan for Empowerment of Healthy Family Specialists in the Family Policy Delivery System (가족정책 전달체계 전담인력의 역량강화를 위한 교육방안 모색을 위한 기초 연구)

  • Park, Jeongyun;Jeong, Jeeyoung;Song, Hyerim;Cho, Younghee;Lee, Hyunah
    • Journal of Families and Better Life
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    • v.33 no.2
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    • pp.53-70
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    • 2015
  • The number of Healthy Family Support Centers has dramatically increased and the services for healthy families such as family education, family counsel, family culture and family care have increased during the past ten years since the Framework Act on Healthy Families was enacted. This growth is largely credited to Healthy Family Specialists. At a time when the family policy delivery system is changing, it is most urgent to enhance the capability of Healthy Family Specialists. In this study, we aim to investigate the current capability of Healthy Family Specialists and suggest the education plan for their empowerment. We collected data from 151 Healthy Family Support Centers by mail and e-mail in June 2014. There were total of 1,001 subjects for analysis(781 by mail and 220 by e-mail). We analyzed the capabilities of Healthy Family Specialist by service areas according to work-related characteristics and possession of a license. Our findings revealed that the capabilities of Healthy Family Specialist varied depending on the service year and whether or not having a licence. These results suggest that the education program for empowerment will provide a differentiated content according to the service year and whether or not having a license. This study contributes to a better understanding of Healthy Family Specialists' current capability and provides insights on how to enhance their capability in order to change the family policy delivery system.

Effects of an ice pack and sulfur generating pad treatment for home delivery on the quality of 'Duke' blueberry fruits

  • Lim, Byung-Seon;Choi, Mi-Hee;Lee, Jin-Su
    • Korean Journal of Agricultural Science
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    • v.45 no.4
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    • pp.811-821
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    • 2018
  • This study focused on the improvement of blueberry delivery service using pre-cooled ice and $SO_2$ pads to prevent an increase in the fruit temperature as well as decay. To maintain the fruit quality during low temperature storage, the effect of a $SO_2$ pad and modified atmosphere packaging was also examined. Harvested blueberries were precooled at $15^{\circ}C$, sorted, and packaged. And the fruits were placed in a similar environment as that for the parcel service. Part of the fruits were stored at $0^{\circ}C$ for long term storage. The air temperature in the delivery box increased along with an increase in the simulated delivery time regardless of the treatment. However, the rate of temperature increase was lower in the ice pad treatment. No significant difference was not found after 48 h. The oxygen concentration in the box ranged between 10.5 - 14.5% in the ice pad treatment, which was higher than that of the untreated control (7.5 - 11.9%) whereas the $CO_2$ concentration was lower in the ice pad treatment. No differences were found in the occurrence of off-flavor, decay, and sensory quality loss during the 48 hours of the parcel service simulation. The combined treatment of the $SO_2$ pad and modified atmosphere packaging (MAP) using a perforated film increased the shelf-life of the blueberry fruits, the overall quality such as firmness, and the soluble solid content was not different between the treatments except for the decay incidence. No decayed fruit was found in the combined treatment. However, the percentage of decayed fruit in the control was 25% on day 15 of storage and 75% on day 33 of storage, respectively.

A Study on the Number of Domestic Food Delivery Services (국내 배달음식 이용건수 분석 및 예측)

  • Kwon, Jaeyoung;Kim, Sinae;Park, Eungee;Song, Jongwoo
    • The Korean Journal of Applied Statistics
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    • v.28 no.5
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    • pp.977-990
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    • 2015
  • Food delivery services are well developed in the Republic of Korea, The increase of one person households and the success of app applications influence delivery services these days. We consider a prediction model for the food delivery service based on weather and dates to predict the number of food delivery services in 2014 using various data mining techniques. We use linear regression, random forest, gradient boosting, support vector machines, neural networks, and logistic regression to find the best prediction model. There are four categories of food delivery services and we consider two methods. For the first method, we estimate the total number of delivery services and the posterior probabilities of each delivery service. For the second method, we use different models for each category and combine them to estimate the total number of delivery services. The neural network and linear regression model perform best in the first method, this is followed by the neural network which is the best for the second method. The result shows that we can estimate the number of deliveries accurately based on dates and weather information.

The study on appropriateness of adapting door-to-door delivery system for the reducong of waiting time at outpatient pharmacy department in Tertiary care hospital (3차 진료기관 외래약국 투약대기시간 단축을 위한 택배 제도 도입 타당성 조사)

  • Song, Jung-Hup
    • Quality Improvement in Health Care
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    • v.3 no.1
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    • pp.144-152
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    • 1996
  • Background : Because of introduction of nationwide health care system in 1989 and the improvement of socioeconomic status of population the number of outpatient visiting university hospital has good facilities and manpower has increased. So the waiting time for medical service at university hospital are lengthened. Particularly outpatients complain that waiting for prescribed drugs at pharmacy depart are long. Reducing waiting time at pharmacy depart door-to-door delivery system that the patients applying for door-to-door delivery receive prescribed drug at home without waiting at pharmacy depart were studied. The objective of this study is to analysis the opinion of outpatients for door-to-door delivery system, to study the appropriateness of adopting the system and to produce ideal model for the system. Method : Outpatients waiting drug at pharmacy depart were questioned about door-to-door delivery system. to find the factors affect utilizing the system the logistic regression was used. Result : 83.3% of the patients want to utilize the system without charging, and 72.9% of the patients want to utilized system with charging. 68.3% of patients with charging want to use this system because of long waiting time at pharmacy depart. 50% of patients who do not want to use door-to-door do not use this system because of incorrect delivery. The affecting factors to utilize the system were sex, waiting time, fee. Conclusion : The model for door to door delivery system. 1. door-to-door personnel reside in hospital and the patient want to utilize the system apply for the delivery with charging. 2. The applied drugs dispense at spare time. 3. Delivery company gathers drug at appointed time and delivers. 4. The delivery fee is 2,000-3,000 won. 5. To prevent from loss and changing the drug the name of patient on packet are printed and drug packet are sealed. 6. The company submit the confirm sheet which are written that the patient received drug correctly to hospital. 7. The delivery time of drug is reserved for the convenience of receiving.

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Sanitation Management Practices of Food Delivery Companies that Supply Food to School Foodsevice establishments (학교급식 식재료 유통업체의 위생관리 실태)

  • Kim, Yun-Hwa;Lee, Yeon-Kyung
    • Food Science and Preservation
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    • v.17 no.6
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    • pp.889-896
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    • 2010
  • We evaluated the sanitation management practices in food delivery companies that supply food and food ingredients to school food-service establishments. We examined the practices 38 food delivery companies located in the Daegu and Gyeongbuk areas of Korea. Sanitation management practices were self-evaluated using a Likert 5-point scale. The total mean score for delivery company sanitation performance was 4.45. Scores for perceived sanitation management performance of the delivery companies were: food ingredient storage and management (4.47); delivery worker (4.47); and management of delivery van (4.38). The personal hygiene score was significantly higher than those of other sanitation inspection items evaluated (p<0.05). Delivery company managers believed that their sanitation management programs kept food hygienically and that the food was delivered to a high level of safety and at optimal quality. However, the managers thought that food quality standardization was needed to ensure transparency in delivery. Food delivery companies wish to obtain sanitation and supply certifications if they meet certain criteria.