• Title/Summary/Keyword: boehm

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Integrated Software Quality Evaluation: A Fuzzy Multi-Criteria Approach

  • Challa, Jagat Sesh;Paul, Arindam;Dada, Yogesh;Nerella, Venkatesh;Srivastava, Praveen Ranjan;Singh, Ajit Pratap
    • Journal of Information Processing Systems
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    • v.7 no.3
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    • pp.473-518
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    • 2011
  • Software measurement is a key factor in managing, controlling, and improving the software development processes. Software quality is one of the most important factors for assessing the global competitive position of any software company. Thus the quantification of quality parameters and integrating them into quality models is very essential. Software quality criteria are not very easily measured and quantified. Many attempts have been made to exactly quantify the software quality parameters using various models such as ISO/IEC 9126 Quality Model, Boehm's Model, McCall's model, etc. In this paper an attempt has been made to provide a tool for precisely quantifying software quality factors with the help of quality factors stated in ISO/IEC 9126 model. Due to the unpredictable nature of the software quality attributes, the fuzzy multi criteria approach has been used to evolve the quality of the software.

Adsorption of Phenols onto Chemically-Activated Carbons Developed from Wild Cherry Stones

  • Alaya, M.N.;Youssef, A.M.;Karman, M.;Abd El-Aal, H.E.
    • Carbon letters
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    • v.7 no.3
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    • pp.188-195
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    • 2006
  • Phosphoric acid-activated carbon WP's and zinc chloride-activated carbons WZ's were developed from wild cherry stones. The textural properties of the activated carbons were determined from nitrogen adsorption data at 77 K and the chemistry of the carbon surface, i.e. the surface carbon-oxygen groups (type and amount) was determined from the base and acid neutralization capacities (Boehm method). The adsorption of phenol, p-nitrophenol, p-chlorophenol, dinitrophenol and dichlorophenol was followed at 298 K. The activated carbons obtained were characterized by high surface area and large pore volumes as well as by high surface concentration of C-O groups. The investigated carbons exhibited high adsorption capacities towards phenols with these capacities increased with the increase of molecular weight and the decrease of the solubility of phenol in water. However, no general relationship could be observed between the adsorption capacities of carbons and any of their textural parameters or their surface chemistry. This may be attributed to the many factors controlling phenol adsorption and the different types and mechanisms of adsorption involved.

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Comparative Investigation of the Hydrogen Production of Zinc/carbons Prepared from Non-activated Carbon and Surface-modified Activated Carbon by Treatment with Zinc Salts

  • Oh, Won-Chun
    • Journal of the Korean Ceramic Society
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    • v.44 no.11
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    • pp.607-612
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    • 2007
  • Zn-AC and Zn-H-AC series prepared from non- and surface-modified activated carbon were investigated in terms of their hydrogen production capacity. An increase in the concentration of the zinc salts used with these series was shown to lead to a decrease in the values of the surface textural properties. The existence of zinc complexes on the surface was confirmed from an analysis of XRD data. The SEM micrographs of the two different sample types showed that the transformation of the carbon surface with an acid pre-treatment significantly change the metal contents on the surfaces of the carbon matrix. The EDX spectra indicated that all of the samples were richer in the amount of oxygen and zinc compared to any other elements. The results obtained using the Boehm's titration method showed that the positive introduction of the acidic groups on the carbon surfaces with the acid treatment is correlated with an increase in the amounts of zinc complexes with variation of the acidic groups. In terms of the hydrogen production performance, the volume fractions of the Zn-H-AC series were found to produce higher amounts than the Zn-AC series as a function of the metal contents considering the effects of the acid treatment.

A study of actual planning how to increase IT productivity by COCOMO II Model (IT산업 생산성 향상을 위한 프로젝트 실행계획 수립 방안 연구 - COCOMO II 적용사례)

  • Park, Cheol-Gu;Kim, Chang-Eun
    • Journal of the Korea Safety Management & Science
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    • v.12 no.2
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    • pp.147-152
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    • 2010
  • Project implementation plan is a blueprint that confirms project performance activities and specifies required man-hour, period and resource imput ratio. Various figures, the results of implementation plan, are predicted through estimation, and because of superiority of objectivity and repeatability, numerical formula-based estimation model is often used overseas. COCOMO model is the representative estimation model whose theories and formulas are publicized and it predicts the total man-hour required for software system development. This model is publicized in "Software Engineering Economics" written by Professor Barry Boehm of the U.S., and is the most widely applied numerical formula-based estimation model. This study is conducted to provide a series of methods that are optimal for KTDS environment by choosing COCOMO II model among various types of COCOMO models. In establishing implementation plan, COCOMO II model alone is not sufficient, it is necessary to link with and apply standard WBS system and standard man-hour. In establishing specific implementation plan, phased standard WBS system in order of the first phase of all the activities implemented in the project, Activity, Task, and Role, and the man-hour put into this should be distributed according to standard ratio from COCOMO II model's total man-hour. This study provides explainations by establishing standard WBS system and linking with COCOMO II model.

Adsorption Behaviors of Noxious Gases on Chemically Surface-treated Activated Carbons

  • Park, Soo-Jin;Shin, Jun-Sik
    • Carbon letters
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    • v.4 no.1
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    • pp.31-35
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    • 2003
  • The specific adsorption behaviors of activated carbons (ACs) treated with 30 wt% $H_3PO_4$ or NaOH were investigated in the removals of NO or $NH_3$. The acid and base values were determined by Boehm's titration method. And, the surface properties of ACs were studied by FT-IR and XPS analyses. Also, $N_2/77K$ adsorption isotherm characteristics, including the specific surface area and micropore volume were studied by BET and t-plot methods, respectively. From the adsorption tests of NO and $NH_3$, it was revealed in the case of acidic treatment on ACs that the $NH_3$ removal was more effective due to the increase of acidic functional groups in carbon surfaces. Also, the NO removal was increased, in the case of basic treatment, due to the improvement of basic functional groups, in spite of significant decreases of BET's specific surface area and total pore volume. It was found that the adsorption capacity of ACs was not only determined by the textural characteristics but also correlated with the surface functional groups in the acid-base intermolecular interactions.

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A Study on the Alteration in Duty of Disclosure in the Marine Insurance Act 1906 (1906년 해상보험법상 고지의무의 변경에 관한 연구)

  • KIM, Chan-Young
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.71
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    • pp.171-194
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    • 2016
  • In the UK, the legal principle for the duty of disclosure established in Carter v Boehm case was codified in the Marine Insurance Act 1906("MIA"). The duty of disclosure under the MIA is the pre-contractual duty by the insured and therefore, the insured should disclose the every material circumstance that would influence a prudent insurer's judgement. If the insured violates the duty of disclosure, the insurer is entitled to avoid the insurance contract, regardless of whether there was the deliberate or reckless breach, which is unfavorable to the insured. The Law Commission reviewed the duty of disclosure under the MIA in detail and provided the Insurance Act 2015 for the purpose of enhancing the interests of the insured. The Insurance Act 2015("Act"),while the basic legal structure of the duty of disclosure under the MIA still remains, amends it in respect of non-consumer insurance and furthermore, integrate the duty of disclosure and the duty not to misrepresent into the duty of fair presentation of risk. And according to the Act, the insurer is required to more actively communicate with the insured before entering the contract with the result that, if the insured fails to disclose the material circumstance but provides the sufficient information to put the insurer on notice, the insurer should further inquire for the purpose of the insured's revealing the material circumstance. In addition, the Act details the insured's constructive knowledge of material circumstance by reviewing the current case law and introduces a new system for the insurer's proportionate remedy against the insured's breach of the duty of fair presentation of risk.

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Adsorption Characteristics of Benzene and MEK on Surface Oxidation Treated Adsorbent -Surface Oxidation by HNO3, H2SO4 and (NH4)2S2O8- (표면산화 처리된 흡착제의 Benzene 및 MEK 흡착 특성 - HNO3, H2SO4 및 (NH4)2S2O8에 의한 표면산화-)

  • Shim, Choon-Hee;Lee, Woo-Keun
    • Journal of Korean Society for Atmospheric Environment
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    • v.22 no.1
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    • pp.25-33
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    • 2006
  • The objective of this research is to improve the adsorption capacity of adsorbent made from MSWI (Municipal Solid Waste Incinerator) fly ash by surface oxidation. Used oxidation agents were $HNO_{3}$, $H_{2}SO_{4}$ and $(NH_{4})_{2}S_{2}O_{8}$. These agents can modify the surface property of an adsorbent such as specific surface area, pore volume, and functional group. The surface structure was studied by BET method with $N_{2}$ adsorption. The acid value and base value were determined by Boehm's method. The adsorption properties were investigated with benzene and MEK (Methylethylketone). According to the results, the specific surface area of the adsorbent was increased from 309.2 $m^{2}$/g to 553.2 $m^{2}$/g by $HNO_{3}$ oxidation. But $H_{2}SO_{4}$ and $(NH_{4})_{2}S_{2}O_{8}$ oxidation was decreased slightly. After Oxidation, surface acid value increased, but base value decreased. FAA-N shows the highest acid value. The content of oxygen increased greatly and oxygen group was created on the adsorbent surface. The surface oxidation improved the adsorbing capacity for MEK. The amount of adsorbing MEK was increased from 189 $m^{2}$/g to 639 $m^{2}$/g by $HNO_{3}$ oxidation.

The Duty of Utmost Good Faith in Marine Insurance (해상보험(海上保險)에 있어서의 최대선의준수의무(最大善意遵守義務))

  • Lee, Shie-Hwan
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.13
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    • pp.365-387
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    • 2000
  • One of the central and primary doctrine of the law of marine insurance is that the contract of indemnity entered into by assured and insurer is a contract of the utmost good faith. The notion of utmost good faith is a well established doctrine derived from the celebrated case of Carter v. Boehm(1766), decided long before the inception of the Marine Insurance Act(MIA). With the codification of the law, the principle found expression in sections $17{\sim}20$ of the MIA 1906. In section 17 is presented the general duty to observe the utmost good faith, with the following sections introducing particular aspects of the doctrine, namely, the duty of the assured and brokers to disclose material circumstances, and to avoid making misrepresentations. It is somewhat surprising that section 17, being a long founded doctrine, has not attracted the attention of the courts until very recently. Given that the most significant manifestations of uberrimae fidei are non-disclosure and misrepresentations, fulfillment of the obligation of utmost good faith was, not unreasonably, for a long time perceived in terms of the duty to disclose and not to misrepresent. However, Black King Shipping Corporation v. Massie, 'Litsion Pride'(1985) has clarified that the duty of disclosure stems from the duty of utmost good faith, and not vice versa. The duty of utmost good faith is an independent and overriding duty, with the ensuring sections on disclosure and representations providing mere illustrations of that duty. It is now clear that there are important questions with regard to the general doctrine and as to the nature and scope of any duty of good faith continuing after the contract of insurance is made which require separate and fuller discussion. The purpose of this paper is to review the nature and scope of the duty of utmost good faith.

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Effects of variety, region and season on near infrared reflectance spectroscopic analysis of quality parameters in red wine grapes

  • Esler, Michael B.;Gishen, Mark;Francis, I.Leigh;Dambergs, Robert G.;Kambouris, Ambrosias;Cynkar, Wies U.;Boehm, David R.
    • Proceedings of the Korean Society of Near Infrared Spectroscopy Conference
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    • 2001.06a
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    • pp.1523-1523
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    • 2001
  • The wine industry requires practical methods for objectively measuring the composition of both red wine grapes on the vine to determine optimal harvest time; and of freshly harvested grapes for efficient allocation to vinery process streams for particular red wine products, and to determine payment of contract grapegrowers. To be practical for industry application these methods must be rapid, inexpensive and accurate. In most cases this restricts the analyses available to measurement of TSS (total soluble solids, predominantly sugars) by refractometry and pH by electropotentiometry. These two parameters, however, do not provide a comprehensive compositional characterization for the purpose of winemaking. The concentration of anthocyanin pigment in red wine grapes is an accepted indicator of potential wine quality and price. However, routine analysis for total anthocyanins is not considered as a practical option by the wider wine industry because of the high cost and slow turnaround time of this multi-step wet chemical laboratory analysis. Recent work by this ${group}^{l,2}$ has established the capability of near infrared (NIR) spectroscopy to provide rapid, accurate and simultaneous measurement of total anthocyanins, TSS and pH in red wine grapes. The analyses may be carried out equally well using either research grade scanning spectrometers or much simpler reduced spectral range portable diode-array based instrumentation. We have recently expanded on this work by collecting thousands of red wine grape samples in Australia. The sample set spans two vintages (1999 and 2000), five distinct geographical winegrowing regions and three main red wine grape varieties used in Australia (Cabernet Sauvignon, Shiraz and Merlot). Homogenized grape samples were scanned in diffuse reflectance mode on a FOSE NIR Systems6500 spectrometer and subject to laboratory analysis by the traditional methods for total anthocyanins, TSS and pH. We report here an analysis of the correlations between the NIR spectra and the laboratory data using standard chemometric algorithms within The Unscrambler software package. In particular, various subsets of the total data set are considered in turn to elucidate the effects of vintage, geographical area and grape variety on the measurement of grape composition by NIR spectroscopy. The relative ability of discrete calibrations to predict within and across these differences is considered. The results are then used to propose an optimal calibration strategy for red wine grape analysis.

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Electrochemical Behaviors of Platinum Catalysts Deposited on the Plasma Treated Carbon Blacks Supports (플라즈마 처리된 카본블랙 담지체에 담지된 백금 촉매의 전기화학적 거동)

  • Kim, Seok;Cho, Mi-Hwa;Lee, Jae-Rock;Ryu, Ho-Jin;Park, Soo-Jin
    • Korean Chemical Engineering Research
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    • v.43 no.6
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    • pp.756-760
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    • 2005
  • In this study, the effect of $N_2$-plasma treatment on carbon blacks (CBs) was investigated by analyzing acid-base surface values and surface functional groups of CBs. The surface characteristics of the CBs were determined by fourier transformed-infrared (FT-IR) spectrometer, X-ray photoelectron spectroscopy (XPS), and Boehm's titration method. Electrochemical properties of the plasma-treated CBs-supported Pt (Pt/CBs) catalysts were analyzed by cyclic voltammetry (CV) experiments. From the results of FT-IR and acid-base values, $N_2$-plasma treatment at 300 W intensity on the CBs led to the formation of the free radical. The peak intensity was increased with increasing the treatment time due to the formation of new basic functional groups(such as C-N, C=N, $-NH_3{^+}$, -NH, and =NH) by the free radical. Accordingly, the basic values were increased by the basic functional groups. However, after a specific reaction time, $N_2$-plasma treatment could hardly influence change of surface functional groups of CBs, due to the disappearance of free radical. Consequently, it was found that optimal treatment time was 30 second for electro activity of Pt/CBs catalysts.