6 research outputs found

    A Robust Ship Scheduling based on Mean-Variance Optimization Model

    Get PDF
    Given a set of available carriers under control, and a set of cargoes to be transported from origin to destination, a robust ship scheduling to minimize a mean-variance objective function with a required level of profit can be modeled as a quadratic programming problem. The Single index model is used to calculate the variance-covariance matrix efficiently. Computational experiments concerning relevant maritime transportation problems are performed on randomly generated configurations of tanker scheduling in bulk trade and some significant results are reported. The results of experiments confirm that the model is validated and its effectiveness is satisfactorily demonstrated.1. μ„œ λ‘  1 1.1 μ—°κ΅¬μ˜ λ²”μœ„ 2 1.2 μ—°κ΅¬μ˜ 방법 4 2. λΆ€μ •κΈ°μ„  μš΄ν•­μ˜ μ„ λ°•μš΄ν•­μΌμ •κ³„νš 문제 6 2.1 선행연ꡬ 6 2.2 λΆ€μ •κΈ°μ„  ν•΄μ‚¬μˆ˜μ†‘ μ§‘ν•©νŒ¨ν‚Ή λͺ¨ν˜• 연ꡬ [SPK λͺ¨ν˜•] 8 3. μœ„ν—˜μ„ κ³ λ €ν•œ 평균-λΆ„μ‚°(Mean-variance) λͺ¨ν˜• 10 3.1 평균-λΆ„μ‚° λͺ¨ν˜• (Mean-Variance Model) 10 3.2 λ‹¨μΌμ§€μˆ˜λͺ¨ν˜• (Single Index Model) 12 4. μ΄μ°¨κ³„νšλ²•μ„ μ΄μš©ν•œ λ‘œλ²„μŠ€νŠΈ μ„ λ°•μš΄ν•­μΌμ •κ³„νš λͺ¨ν˜• 16 4.1 μ΄μ°¨κ³„νšλ²•μ„ μ΄μš©ν•œ λ‘œλ²„μŠ€νŠΈ μ„ λ°•μš΄ν•­μΌμ •κ³„νšλͺ¨ν˜• [ROQ λͺ¨ν˜•] 16 4.2 μˆ˜μ†‘, μ •μ œ, λ°°λΆ„ λ„€νŠΈμ›Œν¬ 18 4.3 ν•­ν•΄μš©μ„ κ³„μ•½ (Voyage Charter)의 κ³Όμ • 20 4.4 μœ μ‘°μ„ μ˜ μ‹œμž₯μ§€ν‘œ 22 5. κ³„μ‚°μ‹€ν—˜ 25 5.1 [SPK λͺ¨ν˜•]에 μ˜ν•œ 계산 κ²°κ³Ό 25 5.2 [ROQ λͺ¨ν˜•]에 μ˜ν•œ 계산 κ²°κ³Ό 31 6. κ²°κ³Ό 및 κ²€ν†  37 κ°μ‚¬μ˜ κΈ€ 39 μ°Έκ³ λ¬Έν—Œ 4

    Low Temperature Processing using Pulsed Laser for Electronic Oxide-Based Device

    No full text
    MasterTraditionally, Thermal treatment is necessary to control of material properties in metal oxides due to the ability such as control of stoichiometry, phase transformation and improvement in purity. However, this process has some problems such as long processing time, energy loss. In addition, thermal process is incompatible with thermally sensitive substrates such as amorphous alloys, polymers and glass. Here in, we introduce the low temperature laser process for oxide-based device instead of thermal process. The first topic is control of stoichiometry and crystallization about NbOx. ALD growth Niobium oxide (NbO2) thin films have been fabricated by pulsed-laser, which open the possibility to applicate NbO2 metal-insulator transition (MIT) in microelectronics since ALD system has advantages at constructing uniform, conformal, and ultrathin films with atomic level accuracy. Pulsed laser annealing under reducing environment enables crystallization and phase transition by inducing oxygen vacancies in ALD deposited Nb2O5 films. The two-terminal devices based on NbO2 made by laser treatment exhibit reliable and reversible threshold switch with high ION/IOFF ratio and low IOFF. Phase transition of ALD deposited multivalent metal oxide using pulsed laser can develop of ALD grown oxide-based threshold switches for advanced electronic device. The second theme is about fabrication of c-axis aligned crystal indium gallium zinc oxide (CAAC-IGZO) films at room temperature by pulsed laser. A range of laser condition for CAAC-IGZO structure were studied. The XRD peak of CAAC (0012) near 33 Β° is observed. The as-deposited a-IGZO TFTs exhibited an on/off ratio of 1.15Γ—10^3 and a subthreshold swing of 2.61 Vdecade^-1. For laser annealed device, a high on/off ratio of 8.6Γ—10^6 and a subthreshold swing of 0.32 Vdecade^-1. These results occur a development of IGZO TFTs using pulsed laser process

    미감적 κ²½ν—˜μ˜ μ‚¬νšŒμ  ν•¨μ˜

    No full text
    ν•™μœ„λ…Όλ¬Έ (석사)-- μ„œμšΈλŒ€ν•™κ΅ λŒ€ν•™μ› : λ―Έν•™κ³Ό, 2014. 2. 김진엽.λ³Έ 논문은 ν˜„λŒ€ μ‚¬νšŒμ—μ„œ 미감적 κ²½ν—˜μ΄ κ°–λŠ” μ‚¬νšŒμ  ν•¨μ˜λ₯Ό νƒκ΅¬ν•œλ‹€. 이λ₯Ό μœ„ν•΄ 미감적 κ²½ν—˜μ— κ΄€ν•œ λΆ€λ₯΄λ””μ™Έμ˜ μ‚¬νšŒν•™μ  λΉ„νŒμ„ κ²½μœ ν•΄, κ·Έ ν•œκ³„λ₯Ό λ…Όλ°•ν•˜κ³  미감적 κ²½ν—˜μ˜ 전볡적 κ°€λŠ₯성을 μ—­μ„€ν•˜λŠ” λž‘μ‹œμ—λ₯΄μ˜ 감성둠을 κ³ μ°°ν•¨μœΌλ‘œμ¨ 미감적 κ²½ν—˜μ— λ‚΄μž¬ν•˜λŠ” 평등과 ν•΄λ°©μ˜ ν•¨μ˜λ₯Ό μ‘°λͺ…ν•˜κ³ μž ν•œλ‹€. μ˜€λŠ˜λ‚  미감적 κ²½ν—˜μ— μ”Œμ›Œμ§€λŠ” ν•œ 가지 μ‚¬νšŒμ  ν˜μ˜λŠ” 그것이 개인의 μ‚¬νšŒμ  κ³„κΈ‰μ˜ μ€λ°€ν•œ μ§•ν‘œ 역할을 ν•˜κ³  μžˆλ‹€λŠ” 점일 것이닀. ν˜„λŒ€ μ‚¬νšŒν•™μž λΆ€λ₯΄λ””μ™ΈλŠ” 개인의 미감적 κ²½ν—˜κ³Ό μ‚¬νšŒμ  계급 쑰건 κ°„ 상관관계에 λŒ€ν•œ 싀증적 연ꡬλ₯Ό 톡해, 칸트의 전톡적 λ―Έν•™ μ΄λ‘ μ—μ„œ μ£Όμž₯된 무관심적 μ·¨λ―ΈνŒλ‹¨μ˜ λ³΄νŽΈμ„±μ„ λ°˜λ°•ν•œ λ°” μžˆλ‹€. λΆ€λ₯΄λ””외에 λ”°λ₯΄λ©΄ 순수 λ―Έν•™ 담둠은 νŠΉμˆ˜ν•œ 역사 μ‚¬νšŒμ  쑰건의 산물에 μ§€λ‚˜μ§€ μ•ŠλŠ” 무관심적 μ·¨λ―ΈνŒλ‹¨μ„ 인간 보편적인 κ²ƒμœΌλ‘œ κ°„μ£Όν•΄ 취미의 μœ„κ³„λ₯Ό μ‘°μž₯ν•œλ‹€. μ΄λŠ” 취미의 μœ„κ³„μ— μƒμ‘ν•˜λŠ” μ •μ‹ μ˜ μœ„κ³„λ₯Ό μ‚¬λžŒλ“€μ—κ²Œ λ‚΄λ©΄ν™”ν•˜κ³ , λ‹€μ‹œ 그에 λ”°λ₯Έ μ‚¬νšŒμ  차별과 κ³„κΈ‰μ˜ μž¬μƒμ‚°μ„ μ •λ‹Ήν™”ν•˜λŠ” κ²°κ³Όλ₯Ό λ‚³λŠ”λ‹€. κ·ΈλŸ¬λ‚˜ λΆ€λ₯΄λ””μ™Έμ˜ 관점은 μžμ‹ μ˜ λ¬Έμ œμ˜μ‹μ—λ„ λΆˆκ΅¬ν•˜κ³  κ³„κΈ‰μ˜ 뢄리 및 고착에 κΈ°μ—¬ν•œλ‹€λŠ” λ™μΌν•œ λΉ„νŒ μ•žμ— μ·¨μ•½ν•˜λ‹€. μ‚¬νšŒμ  μ‹€μ‘΄ 쑰건에 따라 개인의 μ‹€μ²œμ  감각 도식이 ν˜•μ„±λ˜κ³ , λ‹€μ‹œ κ·Έλ‘œλΆ€ν„° μ‚°μΆœλœ 개인의 μ‚¬μœ μ™€ 행동에 μ˜ν•΄ μ‚¬νšŒ μ§ˆμ„œκ°€ μž¬κ΅¬μΆ•λœλ‹€λŠ” λ‹«νžŒ μˆœν™˜μ˜ κ΅¬μ‘°μƒμ—μ„œ λ³€ν™”μ˜ 계기λ₯Ό μ„€λͺ…ν•΄λ‚΄κΈ° μ–΄λ ΅κΈ° λ•Œλ¬Έμ΄λ‹€. 이에 λ™μ‹œλŒ€ μ² ν•™μž λž‘μ‹œμ—λ₯΄λŠ” λΆ€λ₯΄λ””μ™Έκ°€ λΉ„νŒν•˜λŠ” 칸트의 μ‚¬μœ μ— μ€€κ±°ν•΄ 미감적 κ²½ν—˜μ˜ 잠재적 μ—­λŸ‰μ„ κ³ μ°°ν•¨μœΌλ‘œμ¨ λΆ€λ₯΄λ””μ™Έμ˜ λΉ„νŒμ„ λ„˜μ–΄μ„œκ³ μž ν•œλ‹€. λž‘μ‹œμ—λ₯΄κ°€ μžμ‹ μ˜ μ‚¬μœ  근간에 두고 μžˆλŠ” μΈκ°„μ˜ 근원적인 지적 평등 κ°œλ…μ€ μΉΈνŠΈμ—κ²Œμ„œμ˜ μ„ ν—˜μ  인식λŠ₯λ ₯의 λ³΄νŽΈμ„±κ³Ό μΉœμ—°μ„±μ„ κ°–λŠ”λ‹€. λž‘μ‹œμ—λ₯΄λŠ” 이 지적 ν‰λ“±μ˜ μ „μ œλ₯Ό μΈκ°„μ˜ μ†Œν†΅κ³Ό μ‚¬νšŒ μ§ˆμ„œμ˜ 성립 κ°€λŠ₯성을 μœ„ν•΄ μ „μ œλ˜μ–΄μ•Ό ν•˜λŠ” μ €κ°„μ˜ ν† λŒ€λ‘œμ„œ μ—­μ„€ν•œλ‹€. κ·ΈλŠ” μΈκ°„μ˜ 평등을 λͺ©ν‘œκ°€ μ•„λ‹Œ μ „μ œλ‘œ λ‘ μœΌλ‘œμ¨, 주체의 자유둜운 μ—­λŸ‰ 발휘λ₯Ό μœ„ν•œ 동λ ₯으둜 μ‚ΌλŠ”λ‹€. 이 μ μ—μ„œ 미감적 κ²½ν—˜μ€ 평등을 μžκ°ν•˜λŠ” κ³„κΈ°μ΄μž 평등을 μž…μ¦ν•˜λŠ” λ¬΄λŒ€κ°€ λœλ‹€. λž‘μ‹œμ—λ₯΄λŠ” μ‚¬νšŒμ˜ μ§ˆμ„œκ°€ 세계에 λŒ€ν•œ 감각으둜 μ£Όμ–΄μ§€λŠ” 것에 μ£Όλͺ©ν•΄ μ •μΉ˜μ™€ κ°μ„±μ˜ 문제λ₯Ό μ—°κ²°ν•œλ‹€. κ·ΈλŠ” μΉΈνŠΈμ™€ μ‰΄λŸ¬μ˜ λ―Έν•™μ—μ„œ 미감적 κ²½ν—˜μ˜ κ³ μœ ν•œ νŠΉμ§•μœΌλ‘œ λΆ„μ„λ˜λŠ” μ΄μ€‘μ˜ μ€‘μ§€λ‘œλΆ€ν„°, 주체λ₯Ό λΉ„λ‘―ν•œ ν‘œμƒλ“€μ„ κ·œμ •μ§“λŠ” μ’…λž˜μ˜ κ΄€κ³„λ“€λ‘œλΆ€ν„°μ˜ λΆ„λ¦¬μ˜ 계기λ₯Ό 읽어낸닀. 이 가상적 λΆ„λ¦¬μ˜ κ²½ν—˜μœΌλ‘œλΆ€ν„° μ£Όμ²΄λŠ” κΈ°μ‘΄ μ§ˆμ„œμ˜ μš°μ—°μ„±μ„ κΉ¨λ‹«κ³ , ν‰λ“±μ˜ μ „μ œμ— μž…κ°ν•΄ μƒˆλ‘œμš΄ 감각의 μ§ˆμ„œλ₯Ό ꡬ성할 수 μžˆλ‹€. 그리고 이것을 주어진 μ§ˆμ„œμ— λ§žμ„Έμš°λŠ” λΆˆν™”μ˜ λ¬΄λŒ€ν™”λ₯Ό 톡해 세계에 λŒ€ν•œ 감각의 μ§œμž„μ΄ 변화될 수 μžˆλ‹€. 이처럼 λž‘μ‹œμ—λ₯΄λŠ” 미감적 κ²½ν—˜μ˜ λ³΄νŽΈμ„±κ³Ό 가상성을 ν‰λ“±μ˜ μ „μ œμ™€ ν•΄λ°©μ˜ κ³„κΈ°λ‘œ μž¬ν•΄μ„ν•¨μœΌλ‘œμ¨, 미감적 κ²½ν—˜μ— κ΄€ν•œ μ΄ˆμ›”μ  λ…Όμ˜λ₯Ό κ²½ν—˜μ  μ°¨μ›μ—μ„œ κΈμ •μ μœΌλ‘œ μž¬μ „μœ ν•œλ‹€. μ΄λ‘œλΆ€ν„° μ£Όμ²΄λŠ” μƒν˜Έ ν‰λ“±μ˜ μ˜μ‹μ— μž…κ°ν•œ μ†Œν†΅μ—μ˜ μ˜μ§€λ₯Ό κ³ μ·¨ν•˜κ³ , μƒˆλ‘œμš΄ 감각 μ§ˆμ„œμ˜ 발λͺ…을 ν†΅ν•œ μ„Έκ³„μ—μ˜ κ°œμž…μ„ λͺ¨μƒ‰ν•  수 μžˆλ‹€. 이것은 주체둜 ν•˜μ—¬κΈˆ μžμ‹ μ„ κ΅¬μ‘°μ§“λŠ” μ‚¬νšŒμ  μ‹€μ‘΄ 쑰건을 λ„μ™Έμ‹œν•˜μ§€ μ•ŠμœΌλ©΄μ„œλ„ 그에 κ°‡νžˆμ§€ μ•Šκ³ , μžμ‹ μ΄ μ„  μ‚¬νšŒ λ‚΄ μžλ¦¬μ™€ ν‰λ“±μ˜ λ¬΄λŒ€λ₯Ό κ°€λ‘œμ§€λ₯΄λŠ” μ €λ§ˆλ‹€μ˜ μ‹€μ²œμ„ μ‚¬μœ ν•˜κ³  ν–‰λ™ν•˜λ„λ‘ μ΄λˆλ‹€λŠ” 의의λ₯Ό κ°–λŠ”λ‹€.μ„œλ‘  1μž₯. μ˜ˆλΉ„μ  이해 : 칸트의 인식둠과 μ·¨λ―ΈνŒλ‹¨λ‘  1) μ΄ˆμ›”μ  인식둠 2) μ·¨λ―ΈνŒλ‹¨μ˜ 뢄석과 μ—°μ—­ 2μž₯. λ¬Έμ œμ˜μ‹μ˜ λ°°κ²½ : λΆ€λ₯΄λ””μ™Έμ˜ ꡬ별짓기둠 1) 무관심적 μ‹œμ„ μ˜ 역사 μ‚¬νšŒμ  쑰건 2) μ‹€μž¬λ₯Ό κ΅¬μ„±ν•˜λŠ” μ§€μ‹μœΌλ‘œμ„œμ˜ μ·¨λ―Έ 3) λΆ€λ₯΄λ””μ™Έμ˜ νƒˆλ³΄νŽΈμ  κ΄€μ μ˜ ν•œκ³„ 3μž₯. λž‘μ‹œμ—λ₯΄ κ°μ„±λ‘ μ˜ 기반 : μ „μ œλ‘œμ„œμ˜ 평등 1) 지적 λŠ₯λ ₯의 λ³΄νŽΈμ„± 2) 둜고슀의 곡톡성 4μž₯. λž‘μ‹œμ—λ₯΄ κ°μ„±λ‘ μ˜ μ „κ°œ : 미감적 κ²½ν—˜μ„ ν†΅ν•œ 평등 μž…μ¦ 1) β€˜esthΓ©tiqueβ€™μ˜ 이쀑적 의미 2) μ΄μ€‘μ˜ 쀑지 3) λΆˆν™”μ˜ λ¬΄λŒ€ν™” 5μž₯ λž‘μ‹œμ—λ₯΄ κ°μ„±λ‘ μ˜ 의의 1) μ–Έμ–΄λ‘œμ„œμ˜ 감각 2) μ†Œν†΅μ—μ˜ μ˜μ§€ κ²°λ‘ Maste
    corecore