• 한국콘텐츠학회논문지
• /
• 제21권8호
• /
• pp.60-68
• /
• 2021

본 논문의 목적은 2018년부터 넷플릭스에서 상영된 <블랙 미러: 밴더스내치>의 형식적 특성에 대해 알아보고 그것의 의미를 해석하는 것이다. 이 콘텐츠는 시청자에게 사건 진행을 선택할 수 있도록 하고 이에 따라 각기 다른 결말이 나타나기 때문에 일종의 상호작용적 서사로 볼 수 있다. 그러나 여러 가지 방식으로 상호작용이 제한되는 경우도 있어서 수용자는 선택의 자유를 충분히 누리지 못한다. 또한 여러 결말에서 공통적으로 <블랙 미러> 시리즈에 전형적인 테크놀로지 비판의 주제가 나타나는데, 그래서 <밴더스내치>를 전통적 서사의 일종으로 간주할 수도 있다. 이러한 이중적인 서사의 상황 때문에 사용자의 선택 가능성과 작가의 서사적 권위는 충돌하게 된다. 그리고 그 충돌로 말미암아 복잡한 형식이 발생하는데, 그것은 비선형적 상호작용성과 선형적 서사 형식 사이의 중간적인 것이며, 혹은 두 가지가 융합된 결과이다. 그리고 그것을 메타렙시스 또는 제4의 벽을 파기하는 형식과 같은 자기반영의 형식으로 이해할 수 있다. 본 논문에서는 이러한 특수한 형식을 통해 성찰적 상호미디어성, 즉 일종의 융합 형식을 통한 미디어의 자기성찰이 이루어질 수 있음을 설명해 보고자 한다.

• 한국화재소방학회:학술대회논문집
• /
• 한국화재소방학회 1996년도 학술발표회
• /
• pp.57-61
• /
• 1996

Our goal was to make a cost-effective automatic fire extinguishing system for the engine compartment use of automobiles. We designed this system for the engine compartment. This system consists of 1)foam extinguisher, 2)four nozzles, 3)a pipe arrangement, and 4)an extinguishing device which is equipped with a glass bulb as detector. First and foremost, the extinguishing device was carefully designed to keep the system cost to a minimum. Second, a AFFF foam extinguisher was used because no other fire-fighting agents proved effective against fire in the engine compartment. The AFFF(Aqueous Film Forming Foam) agent which was used in the extinguisher is the 3M company's Light Water. We sought, however, to make other foams by using Halon 1301 and Halon alternatives such as HCFC Blend A, HFC-227ea. We selected these alternatives instead of air in order to raise the expansion ratio of the AFFF agent. By these means we discovered that it is possible to increase the expansion ration of the AFFF agent up to 44:1. We then demonstrated that our automatic fire extinguishing system is the most effective and lowest cost-system yet devised for passenger cars.

• 한국환경보건학회지
• /
• 제25권3호
• /
• pp.58-63
• /
• 1999

Biodegradable films were prepared by solution blend method in the weight ratio of chitosan for the purpose of useful biomaterials. The possibility of biomaterials prepared from natural polymer as a skin substitute was evaluated by measuring biocompatibility. These films were inserts in the back of rat and their biodegradability was investigated by the film weight and hematology as a function of time for the biotransformation. The result of rat test showed that medium, high viscosity chitosan induced some suspects of inbiocompatibility in the tissue by goreign body reaction 48 and 72 hours after implantation. Also, we prepared the official burn ointment which is made by low viscosity chitosan. This burn ointment was covered on the skin wound of artificial burn and their effect of healing was investigated by the evaluation of the naked eye and hematological change as a function of time. The result of rats test showed that burn ointments made from chitosan was effective reductio of inflammation than negative group.

• 한국전기전자재료학회:학술대회논문집
• /
• 한국전기전자재료학회 2009년도 하계학술대회 논문집
• /
• pp.460-461
• /
• 2009

We studied the effects of post-annealing treatment on poly(3-hexylthiophene)(P3HT, donor):[6,6]-phenyl $C_{61}$ butyric acid methyl ester(PCBM, acceptor) blend film as an active layer in the organic solar cells(OSCs). For the formation of the active layer, 3 wt.% P3HT:PCBM solution in chlorobenzene were deposited by spin-coating method. In order to optimize the performance of OSCs, the P3HT crystallization and the redistribution of PCBM cluster at P3HT:PCBM composition as a function of post-annealing condition from room temperature to $200^{\circ}C$ were measured by the Hall effect and the UV-vis Spectrophotometer. We thought that the improved efficiency in the OSCs with post-annealing treatment at $150^{\circ}C$ can be explained by the efficient separation or collection of the photogenerated excitons at donor-acceptor interface by P3HT crystallization.

• 한국응용과학기술학회지
• /
• 제15권4호
• /
• pp.71-78
• /
• 1998

Gum is known as natural polymer. Biodegradable films were prepared by solution blend method in the weight ratio of natural gums(Xanthan, Locust bean, Guar) for the purpose of useful bioimplants. The possibility of bioimplants, which prepared from natural gums as a skin substitute was evaluated by measuring biodegradability. This biodegradable films were inserted in the back of rats and their of biodegradability were investigated by hematological change evaluation as a function of time to the biotransformation. Rats implantation test results showed that Guar induced increments of monocyte and basophil after 48 hours of implantation. And Locust bean showed increase of monocyte and neutrophile counts after 48 hours of implantation. And Xanthan induced decrease of monocyte and neutrophile at 24 hours after implantation. Guar and Locust showed high hemoglobin contents and hematocrit after 48 hours of implantation. Guar and Locust induced some suspects of incompatibility in the tissue after 48 hours, but three were little effects to the skin inflammation at 24 hours. These values of biodegradable films, which prepared from prepared from natural gums measured in this were some satisfiable results at short period with those of ideal skin bioimplants.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1996년도 하계학술대회 논문집 C
• /
• pp.1645-1647
• /
• 1996

Polycrystalline CdTe thin films -have been studied for photovoltaic application because of their high absorption coefficient and optimal band gap energy (1.54 eV) for solar energy conversion. In this study, we prepared CdTe films using RF-magnetron sputtering method and investigated structural, optical and electrical properties with spectrophotometer, XRD, EDX, and resistivity meter. CdTe films at $200\;^{\circ}C$ showed a mixture of zinc blend (Cubic) and wurtzite (hexagonal) phase. On the other hand, the films at $400\;^{\circ}C$ showed highly oriented structure having hexagonal structure. The resistivity of CdTe films deposited on $SiO_2$ substrates was about $10_7\;{\Omega}cm$. The value of resistivity decreased with the increase of the substrate temperature. CdTe were sputtered on CdS thin films prepared by chemical bath deposition for the formation of the heterojunction. I-V characteristics of these cells were measured at a light density of $100mw/cm^2$, AM. 1.0. The present thin film solar cells showed a conversion efficiency of about 5%.

• 한국진공학회:학술대회논문집
• /
• 한국진공학회 2012년도 제42회 동계 정기 학술대회 초록집
• /
• pp.277-277
• /
• 2012

PCDTBT (Poly[N-9''-hepta-decanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)]) is an attractive material as a semiconducting polymer for organic thin film transistor (OTFT) and organic solar cell (OSC). High power conversion efficiency (~6%) under simulated AM 1.5G solar illumination of bulk-heterojunction solar cell with PCDTBT and [6,6]-phenyl C60 butyric acid methyl ester (PC61BM) blend was reported. In OSC, it is known that the band alignment at the interface between donor and acceptor is critical. Therefore, we studied the interfacial electronic structures of PCDTBT and PC61BM. The polymers are deposited by electro-spray on gold and In-situ x-ray and ultraviolet photoelectron spectroscopy measurements revealed the interfacial electronic structures. We obtained the energy level alignment between two materials and the different interface formation was observed with different deposition order.

• 반도체디스플레이기술학회지
• /
• 제20권4호
• /
• pp.125-129
• /
• 2021

We investigated the electronic property and atomic structure for chalcopyrite (CH) Al_xGa_1-xAs semiconductor by using first-principles FPLMTO method. The CH-Al_xGa_1-xAs exhibits a p-type semiconductor with a direct band-gap. For low Al concentration unoccupied hole-carriers are induced, but for high Al concentration it is formed a localized bonding or anti-bonding state below Fermi level. The hybridization of Al(3s)-Ga(4s, or 4p) is larger than that of Al(3s)-As(4s, or 4p). And the Al film on As-terminated surface, Al/AsGa(001), is more energetically favorable one than that on Ga-terminated (001) surface. Consequently, the band-gap of CH-Al_xGa_1-xAs system increases exponentially with increasing Al concentration. The change of lattice parameter is shown two different configurations with increasing Al concentration. The calculated lattice parameters for CH-Al_xGa_1-xAs system are compared to the experimental ones of zinc-blend GaAs and AlAs.

• 한국작물학회지
• /
• 제56권2호
• /
• pp.113-118
• /
• 2011

작물의 멀칭재배에 활용이 가능한 생분해성 필름의 개발과 이용가능성을 검토하고자 수행한 결과는 다음과 같다. 1. 천연고분자를 이용한 생분해가 가능한 필름의 제조를 위해 벼 부산물인 왕겨와 쌀겨를 이용하여 생분해성 필름을 제조하였다. 2. 천연고분자를 이용하여 개발된 생분해성 필름의 기계적인 특성은 기존 멀칭필름과 비교해서 신장율은 낮으나 인장강도는 2배 이상 강함을 보였다. 그리고 파열점 비교에서도 멸칭필름은 뚜렷한 파열점이 존재하고 그 이후에는 같은 힘을 주어도 계속 늘어난 반면, 생분해성 필름은 서서히 늘어나며 점차 힘을 증가시켜야 늘어나는 특성을 보였다. 3. 생분해성 필름에 대한 유해성분 용출시험에서 중금속 들이 검출되지 않았고, 국내 친환경 인증 기준이 정하는 생분해성 수지의 함량기준에 충족하였다. 4. 작물을 이용한 토양 분해력 시험에서도 3 개월 이후에 서 대부분 분해됨을 보여 일반 농업 현장에 적용이 가능할 것으로 사료된다.

• 공업화학
• /
• 제23권2호
• /
• pp.217-221
• /
• 2012

에틸렌-아크릴산 공중합체(EAA)를 물에 분산시킨 후, 폴리(비닐 알코올) (PVA) 수용액과 블렌딩하여 내수성 및 차단성이 향상된 필름을 제조하였다. EAA의 함량에 따라 제조된 필름으로 열적-기계적 성질, 접촉각, 수분 투과율, 산소 투과율을 측정하였고 내수성에 대한 평가 실험도 진행하였다. 필름의 인장강도는 $9.16{\sim}11.75\;kg/mm^2$으로 PVA와 큰 차이가 없었으며, 경도의 경우는 EAA 함량에 따라 값이 점점 증가하였다. 유리전이 온도와 용융 온도는 약간 향상되었다. PVA/EAA의 비율이 90/10인 블렌딩 필름의 경우 Swelling 109%, Solubility 0%로 측정되어 PVA에 비하여 내수성이 개선되었음을 확인할 수 있었다. 또한, PVA/EAA의 비율이 90/10인 블렌딩 필름(두께 $2.5\;{\mu}m$)을 PET 필름(두께 $50\;{\mu}m$) 위에 코팅하여 제조된 필름의 수분투과율과 산소 투과율은 각각 $9.1\;g/m^2/day$과 $2.0\;cc/m^2/day$으로 측정되었다.