• Title/Summary/Keyword: compatibility

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Compatibility of POSS Composites with Silicone Monomers and Application to Contact Lenses Material

  • Lee, Min-Jae;Lee, Kyungmun;Sung, A-Young
    • Journal of the Korean Chemical Society
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    • v.64 no.6
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    • pp.354-359
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    • 2020
  • This research was conducted to analyze the compatibility of used monomers and produce the high functional contact lens material containing silicone monomers. Silicone monomer (Sil-OH), Trimethylsilylmethacrylate (TSMA) were used as additives for the basic combination of Polyhedral Oligomeric Silsesquioxane (POSS), methyl methacrylate (MMA) and methyl acrylate (MA). And also, the materials were copolymerized with ethylene glycol dimethacrylate (EGDMA) as the cross-linking agent, AIBN (thermal polymerization initiator) as the initiator. It is judged that the fabricated lenses of all combinations are optically excellent and thus used monomers have good compatibility. Measurement of the optical and physical characteristics of the manufactured hydrophilic lens material were varied in each case. Especially TSMA with POSS increases the oxygen permeability and Sil-OH with POSS increases the wettability by the addition of Sil-OH. These materials were considered to have compatibility each other, so it can be used in functional contact lens material.

Ergonomic Recommendation for Optimum Positions and Warning Foreperiod of Auditory Signals in Human-Machine Interface

  • Lee, Fion C.H.;Chan, Alan H.S.
    • Industrial Engineering and Management Systems
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    • v.6 no.1
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    • pp.40-48
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    • 2007
  • This study investigated the optimum positions and warning foreperiod for auditory signals with an experiment on spatial stimulus-response (S-R) compatibility effects. The auditory signals were presented at the front-right, front-left, rear-right, and rear-left positions from the subjects, whose reaction times and accuracies at different spatial mapping conditions were examined. The results showed a significant spatial stimulus-response compatibility effect in which faster and more accurate responses were obtained in the transversely and longitudinally compatible condition while the worst performance was found when spatial stimulus-response compatibility did not exist in either orientation. It was also shown that the transverse compatibility effect was found significantly stronger than the longitudinal compatibility effect. The effect of signal position was found significant and post hoc test suggested that the emergent warning alarm should be placed on the front-right position for right-handed users. The warning foreperiod prior to the signal presentation was shown to influence reaction time and a warning foreperiod of 3 s is found optimal for the 2-choice auditory reaction task.

A Three-Set Type Korean Keyboard Model, 38K, with High Compatibility to the KS Computer Keyboard

  • Kim, Kuk
    • Journal of the Ergonomics Society of Korea
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    • v.33 no.5
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    • pp.355-363
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    • 2014
  • Objective:The purpose of this study is to design a three-set type (Sebulsik) keyboard that is to input Korean text with no shifted keys and also compatible with the standard Korean computer keyboard or ANSI keyboard. Background: The KS computer keyboard is two-set type (Dubulsik). Existing and proposed designs of three-set type of past studies are not compatible with KS or ANSI keyboard and are complex with many redundant letters. Method: The number of Korean letters for 3-set type is analyzed. Then Korean letters are arranged with normality and with spatial compatibility to the KS Korean keyboard, and symbols were arranged to same positions with ANSI keyboard. Results: Initial consonants of 14 numbers and 6 vowels are arranged as exactly same positions of KS keyboard, and other vowels are arranged with spatial compatibility. Symbols are arranged to the same positions with ANSI keyboard, and 10 digits are confirmed and has compatibility to International standard. Conclusion: A 38-key model, 38K, is designed to require minimal keys to input Korean text with no shifted keys, increased the compatibility to the KS Korean computer keyboard. Application: Using the proposed 38-key model, 38K, it can be taken into account for keyboards in industrial production. It is applicable to user group of 3-set type Korean keyboard with more easy than past keyboards.

Blood Compatibility of Hollow Fiber Membranes Treated by Plasma Polymerization (플라즈마 중합 처리된 중공사 막의 혈액 적합성)

  • Lee, Sam-Cheol;Kwon, O-Sung
    • Membrane Journal
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    • v.15 no.3
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    • pp.233-240
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    • 2005
  • Surface modification of polypropylene hollow fiber membranes was performed in order to develop blood-compatibility biomaterials for use in the blood contacting surfaces and oxygenation membranes of a lung assist device (LAD), important medical device even more useful. Blood compatibility of materials was determined by using anticoagulation blood and evaluating formation of blood clots on their surfaces as well as activation of plasma coagulation cascade, platelet adhesion, and aggregation. It was verified that the number of platelets on the silicone coated fibers was significantly lower than that on untreated fiber membrane, indicating improved blood compatibility. It was also found that the polypropylene hollow fiber membranes using plasma treatment exhibited suppression of complement activation in blood compatibility test.

Architecture of A Launch Control Unit for the Compatibility of Weapon Systems Based on Shipboard (함정 기반 다중 무장 호환 운용을 위한 발사제어기 아키텍처)

  • Shin, JinBeom;Cho, KilSeok;Yoo, MyongHwan;Kim, TaeHyon
    • Journal of the Korea Institute of Military Science and Technology
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    • v.23 no.2
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    • pp.176-184
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    • 2020
  • In this paper, we have proposed hardware and software architecture of a launch control unit for the compatibility between air defense weapon systems loaded on shipboard. Until now, there is no compatibility between weapon systems loaded in battleships of korean navy. In the case of HaeGung system recently completed the test and evaluations, although it will be deployed on several kinds of shipboards, it has no compatibility and flexibility with other air defense weapon systems. Recently it reports that a long range air defense weapon system will be carried on future korean destroyer KDDX. Because the HaeGung and a long range air defense system will be operated together in KDDX, it is necessary to provide the compatibility between two weapon systems. So we have proposed architecture to provide the compatibility of the launch control unit that controls the launching system and the missile interface unit, and the missile in each weapon systems.

Work-Family Compatibility Experience of Married Nurse: Focusing on the Expanding Stage of the Family Life Cycle (기혼간호사의 일-가정양립경험: 가족확대기 간호사를 중심으로)

  • Kim, Han-Na;Kim, Jeong-Seon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.2
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    • pp.545-559
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    • 2016
  • This study examined the work-family compatibility experience of married nurses. The participants of this research were 7 registered nurses who are on the expanding stage of their family life cycle. Data were collected by individual in-depth interviews from June 10 to November 30, 2015 and analyzed using phenomenological methodology by Colaizzi (1978). The results showed that the work-family compatibility experience of married nurses may be categorized into 4 categories, 'the reality of work and parenting', 'external and internal conflicts about the compatibility of work and parenting', 'compromise with reality for solving the difficulty of compatibility', 'growing desire and efforts for compatibility', and may be identified with 12 theme clusters and 29 themes. The worthiness as a professional woman and happiness in child rearing are the driving force of the compatibility of work and family in married nurses. Therefore, the continued support of government policies and family is important for married nurses to maintain work and family balance.

A Study on MPDB Compatibility Assessment of Car to Car Offset Frontal Impact Test (차 대 차 부분 정면충돌 시험의 MPDB compatibility 평가에 대한 연구)

  • Sun, Hongyul;Yoon, Ilsung;Kim, Jeasu;Lee, Mansu
    • Journal of Auto-vehicle Safety Association
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    • v.11 no.4
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    • pp.6-15
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    • 2019
  • Since introducing the offset frontal impact test in EuroNCAP in 1997, the vehicle has been constantly changing according to its usage and purpose. As of 2019, many vehicles have been released to the public, which has led to a large structural mass difference between small, medium and large vehicles. Also, the geometry of the front of the vehicle is completely different for each vehicle and tends not to be perfectly aligned at frontal collisions. The difference in mass of each of these vehicles and less performing structures for offset crashes have led to dramatically worse outcome in a car to car offset frontal impact tests. Even though a decade later passenger cars have become much safer due to consumer test programs and regulatory requirements, the aggressiveness and compatibility that can cause damage to the opponent car in the event of car to car collision is not considered in the above-mentioned section, and therefore much improvement is needed. After many years of study to solve this problem, EuroNCAP has developed a new mode MPDB offset front test that considers the aggressiveness and compatibility that can affect the opponent cars that have collided. This paper introduces the development process of aggressiveness and compatibility evaluation method of MPDB in EuroNCAP which will be implemented from 2020. Several impact tests have been conducted at different test conditions to rate the vehicle structure performance only focused on aggressiveness and compatibility of MPDB.

Electrical Interfaces Compatibility Analysis for the COMS Wheels (통신해양기상위성 휠 전기접속 적합성 해석)

  • Koo, Ja-Chun;Kim, Eui-Chan
    • Aerospace Engineering and Technology
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    • v.6 no.1
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    • pp.103-108
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    • 2007
  • Eurostar 3000 AOCS is optimized for telecommunication mission with no strong requirement on attitude stability and has therefore to be upgraded to comply with COMS high stability requirements for the optical observations. This COMS configuration constraint induces specificities for the wheel. The aim of this analysis is to verify the electrical compatibility of the interfaces which exist between COMS wheels and external equipments. For each interface, this study checked the compatibility between equipments for the power links, commands, digital telemetry, analog telemetry, and failure condition or AIT errors. In addition with this interface compatibility verification, this study outputs electrical and manufacturing recommendations to be applied at harness level.

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A Study on Designing Key Fastening Parts for Compatibility of Teaching-Aids-Robots (교구로봇 호환성을 위한 체결구 부품 설계에 관한 연구)

  • Moon, Jeon-Il;Ryuh, Young-Sun;An, Jin-Ung
    • The Journal of Korea Robotics Society
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    • v.6 no.1
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    • pp.10-17
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    • 2011
  • This paper deals with researching and designing the fastening parts to be used in order to assemble various Teaching Aids Robots (or Hands-on Robots) with originally incompatible parts supplied by different manufacturers. The suggested fastening parts provide the compatibility among Teaching Aids Robots even though the educational robot customers use incompatible parts from different companies. The designed fastening parts are classified into four set groups such as frame set, sliding-bar set, connector set, and set of chuck and rivet/bolt. Each set of the fastening parts reflects the needs collected from the users, and then some portion of new idea has been added to implement the needs. In this paper, the examples of the Teaching Aids Robots which are assembled with both commercial parts and the designed parts are presented in order to evaluate the compatibility and usability of the suggested fastening parts. As a result, both compatibility and usability of the fastening parts suggested in this paper were proved. The designed fastening parts have been distributed to more than 100 elementary schools nationwide.

A Study on Car-to-car Frontal Impact Considering the Vehicle Compatibility (상호안전성을 고려한 차대차 정면 충돌 안전성 선행 연구)

  • Lee, Chang min;Shin, Jang ho;Kim, Hyun woo;Park, Kun ho;Park, Young joon
    • Journal of Auto-vehicle Safety Association
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    • v.9 no.1
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    • pp.13-18
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    • 2017
  • In recent years, NCAP regulations of many countries have induced automaker to improve the vehicle crashworthiness. But, the current NCAP regulations don't cover all types of traffic accidents. And rapid-increasing market share of compact cars and SUVs has brought for both consumer and automaker to pay more attention on crash compatibility. So, many countries have tried to develop the new crash test mode and update the present crash test mode. Especially, Euro NCAP has been developing a new impact protocol of the car-to-car frontal offset impact including the crash compatibility assessment. There are plans to introduce this new protocol in 2020, and it will be replaced the current Euro NCAP frontal offset impact. The test dummy in the front seats of this new test mode will be changed from 50% Hybrid-III male to 50% THOR male. This paper will address the vehicle responses, the occupant responses and the vehicle compatibility performance from a full vehicle crash test using the new car-to-car frontal offset test protocol of Euro NCAP.