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      • 대형 건설프로젝트의 발주방법 선정 모형

        Solomon Sackey,김병수(Amugae Kim) 한국구매조달학회 2017 한국구매조달학회지 Vol.16 No.1

        대규모 건설프로젝트는 방대한 양의 재정적 투자, 긴 프로젝트 기간, 많은 프로젝트 참여자, 넓은 건설규모, 고도로 복잡한 기술 등 다양한 미래를 가진 복잡한 방식 및 절차에 의해 적용된다. 건설업계의 성과에 대한 주요 개선영역 중 하나는 적절한 조달방법을 사용하는 것이다. 조달시스템 선택은 불확실성과 애매모호함으로 인해 어려움을 겪는다. 특정 프로젝트에 대한 조달방식은 선택하려는 대부분의 고객의 결정은 대개 개이적인 직감과 과거경험을 기반으로 한다. 그러나 이러한 접근방식은 각 프로젝트마다 고유한 특성이 있다는 점에서 성공적이지는 못하다. 본 연구에서 제시하는 건설조달방법 선정모형은 실존적 지식으로 인해 조달시스템 선별프로세스의 요구사항을 충족시키는 대표적인 기술이라 할 수 있다. 이 모형은 의사결정자가 조달시스템 선택 및 계약에 대한 정보에 입각한 결정에 도달 할 수 있도록 돕기 위한 것이다. Large-scale construction projects are applied by complex methods and procedures with various futures, including vast amounts of financial investment, long project duration, large project participants, large building scale, and highly sophisticated technologies. One of the major areas of improvement in the performance of the construction industry is the use of appropriate procurement methods. Procurement system seletion suffers from uncertainty and ambiguity. Most customer decisions to choose a procurement method for a particular project are usually based on personal intuition and past experience. However, this approach is not successful because it has unique chracteristics for each project. The construction procurement method selection model proposed in this study is a reperesentative technology that meets the requirements of procurement system seletion process due to existential knowledge. This model is to help decision makers reach decision-making based on information on procurement system selection and contracting.

      • KCI등재후보

        Transparency and Fight against Public Procurement Corruption in Nigeria: A Perspective on the Public Procurement Act, 2007

        Solomon I. Ifejika 한국외국어대학교 아프리카연구소 2020 Asian Journal of African Studies Vol.- No.47

        A number of challenges characterized Nigeria’s public procurement system and practice throughout the period before 2007. Notable among these problems were lack of transparency in contract award and execution process and systemic corruption and associated under-hand practices. The undesirable state of affairs in country’s procurement sphere was generally attributed to the lack of a modern law on public procurement. Against this backdrop, the Nigerian National Assembly enacted a procurement law - the Public Procurement Act (PPA) of 2007 with the aim to addressing the anomalies in the nation’s procurement system. This paper examines the contribution of the PPA in engendering greater transparency and curbing corruption in Nigeria’s public procurement process and system. The study finds that, the existence of PPA has enthroned a considerable degree of transparency in the country’s procurement system and brought about some noticeable successes in the fight against public procurement corruption. Despite these successes however, certain factors still constitute major challenges to the attainment of the maximum potentials and effectiveness of the PPA in this regard, namely, low level of compliance with Act by critical stakeholders, unsatisfactory level of enforcement of the PPA by the BPP, general lack of adequate knowledge of the provisions of the Act by the citizenry, among others. The paper thus recommends certain workable measures to remedying the situation, including, among others, strict enforcement of the provisions of the PPA by the BB and absolute compliance with the Act by critical stakeholders, particularly the Nigerian Federal Government. The paper concludes that proper implementation of the recommendations therein would in practical sense go a long way in assisting Nigeria to achieve the desired level of transparency and record meaningful progress in the efforts at curbing corruption in her procurement process, thereby enhancing the efficiency and effectiveness of the system. Qualitative in approach, the data for this paper were derived through secondary method and in-depth interview, and analyzed using the interpretive method of qualitative data analysis. These methods were considered adequate and suitable in achieving the objective of the study.

      • KCI등재

        Forest users’ level of participation in a participatory forest management program in southwestern Ethiopia

        Solomon Tadesse,Muluneh Woldetsadik,Feyera Senbeta 한국산림과학회 2017 Forest Science And Technology Vol.13 No.4

        This study examines the level of forest users’ participation at different stages of a participatory forest management (PFM) program, and identifies factors that influence their level of participation in the Gebradima forest, southwest Ethiopia. Data were collected from five forest user groups (FUGs) through household surveys, key informant interviews, and focus group discussions. A participation index (PI) and binary logistic regression model were used to analyze the data. Results revealed that the level of the forest users’ PI was 65.7%, 59%, and 54.9% at the planning, implementation, and monitoring stages, respectively. The logistic regression model showed that gender, family size, education level, income from the forest, distance of the forest from home, restriction on charcoal and timber harvesting, elite domination in decision-making processes, and lack of incentives were found to be statistically significant (P < 0.05) predictors for the level of participation. Thus, this study suggests that policy-makers and project designers should consider these factors in making future PFM implementation strategies to improve the level of forest users’ participation in forest management activities.

      • Pay Communication and Job Satisfaction

        "Solomon Agbanyo", "이정언" 培材大學校 社會科學硏究所 2015 사회과학연구 Vol.37 No.1

        기업은 변화하는 환경 속에서 경쟁력을 지속적으로 유지하고자 노력을 가속하고 있다. 기업의 경쟁력은 다양한 요소에 의해 형성되며, 이 가운데 구성원의 만족은 이를 결정짓는 주요 요소가 된다. 이러한 이유에서 기업의 경영자들은 구성원의 만족과 성과에 대한 동기부여 수준을 제고하기 위한 시도를 지속하고 있다. 보상은 구성원의 동기부여를 높이기 위한 외적 유인요인으로 그 크기뿐만 아니라 결정되는 과정 역시 중요한 의미를 가진다. 특히 보상을 결정하는 과정에서 구성원의 참여와 조직과의 의사소통은 제공되는 보상으로부터 동기유발을 극대화시키기 위한 의미 있는 관리전략으로 활용될 수 있다. 본 연구는 보상을 통한 동기유발 전략으로서 보상관련 의사소통에 초점을 두었다. 선행연구에 바탕을 둔 이론적 분석에 따르면, 보상 의사소통은 기업구성원의 직무만족뿐만 아니라 더 나아가 기업의 가치증대에 긍정적인 효과가 있는 것으로 확인되었다. 본 연구는 이와 같은 선행연구를 바탕으로 구성원들의 지각된 보상 의사소통이 직무만족, 공정성 지각에 긍정적인 영향을 미치리라는 이론적 명제를 제시하였다. 본 연구에서 제시된 각각의 명제는 실증자료를 통해 구체적으로 검증되고 이를 통해 일반화시킬 수 있는 연구결과의 토대로 활용될 것이다. The increasing interest that companies have been showing over recent years in employees and in practices related to their management, especially pay communication. It is important to understand the emotional and behavioral impact of misunderstanding pay systems. The study investigates how employees’ perception about pay communication affects critical attitudes like job satisfaction. The study extends existing research on pay communication, attempting to explain the relationship between perceived pay communication and job satisfaction. A series of propositions has been formulated in this study from the theoretical and empirical literature. It is suggested that an empirical investigation of the effect of pay communication on the firm’s performance is required.

      • KCI등재후보

        The Visual, Under the Challenges of Contemporary Science

        Solomon Marcus 고려대학교 응용문화연구소 2012 에피스테메 Vol.0 No.7

        We approach topics such as: the rise of the digital-analogous interaction, as a consequence of the emergence in many fields of the discrete-continuous interaction; the consequences in the field of the visual and the related physical, biological, linguistic, psychological and computational aspects; 'visible' versus 'intelligible' the place of the 'visual' with respect to 'reality' and 'fiction' the visual accounting for infinities of various types; the challenge of the wrong visual representations; 'visual' and 'macroscopic' 'visual' and 'fractal' 'visual' and non-Euclidean universes.

      • KCI등재

        Duration Estimate at Completion: Improving Earned Value Management Forecasting Accuracy

        Solomon Sackey,이동은,김병수 대한토목학회 2020 KSCE JOURNAL OF CIVIL ENGINEERING Vol.24 No.3

        Earned Value Management (EVM) has been established as a project management technique for project monitoring and control. The traditional EVM performs well in forecasting Cost Performance index and other cost metrics. However, in terms of schedule performance, the accuracy of the forecasted schedule metrics through the traditional EVM approach are always questionable. The schedule performance is not measured in time unit but rather in monetary units or uses cost information, which may cause misleading in the interpretation of the EVM schedule metrics. The schedule performance is not accurately forecasted, resulting in underestimating the estimate at completion (t). Even the renowned Earned Schedule also uses cost as a proxy to determine the earned schedule. This paper presents a new EVM tool, Duration estimate at completion (DEAC-model) developed to accurately forecast the time estimate at completion. DEAC-model uses the actual time spent on each activity, either in progress or upon completion, where the Performance is measured in time units. The benefits of DEAC-model to project management team and researchers are that it can be used: 1) to forecast schedule metrics accurately so that resources can be effectively allocated to complete the remaining activities, 2) as a gauge to assess if the project can be completed within the plan schedule, and 3) to apply time series and simple linear regression model concepts using excel worksheet syntax to forecast duration estimate at completion that is easily applicable.

      • KCI등재

        Multiresponse Optimization and Prediction of Antioxidant Properties of Aqueous Ginger Extract

        Solomon Akinremi Makanjuola,Victor Ndigwe Enujiugha,Olufunmilayo Sade Omoba 한국식품영양과학회 2016 Preventive Nutrition and Food Science Vol.21 No.4

        The influence of extraction temperature, powder concentration, and extraction time on the antioxidant properties of aqueous ginger extract was investigated. The possibility of estimating the antioxidant properties of the extract from its absorbance and colour properties was also investigated. Results indicated that powder concentration was the most significant factor to consider in optimizing antioxidant extraction. However, temperature and time still influenced the 2,2’-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity while extraction temperature influenced the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity of the extract. Using the total phenol content, total flavonoid content, ABTS radical scavenging activity, and DPPH radical scavenging activity of the extract, the multiresponse optimization condition for extraction of antioxidant based on the experimental range studied is 96℃, 2.10 g/100 mL, and 90 min. The absorbance of the ginger extract at 610 nm could be exploited for rapid estimation of its total flavonoid and polyphenol with a R<SUP>2</SUP> of 0.713 and 0.753, respectively.

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