• Title/Summary/Keyword: Review Features

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The observation of permeation grouting method as soil improvement technique with different grout flow models

  • Celik, Fatih
    • Geomechanics and Engineering
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    • v.17 no.4
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    • pp.367-374
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    • 2019
  • This study concluded the results of a research on the features of cement based permeation grout, based on some important grout parameters, such as the rheological properties (yield stress and viscosity), coefficient of permeability to grout ($k_G$) and the inject ability of cement grout (N and $N_c$ assessment), which govern the performance of cement based permeation grouting in porous media. Due to the limited knowledge of these important grout parameters and other influencing factors (filtration pressure, rate and time of injection and the grout volume) used in the field work, the application of cement based permeation grouting is still largely a trial and error process in the current practice, especially in the local construction industry. It is seen possible to use simple formulas in order to select the injection parameters and to evaluate their inter-relationship, as well as to optimize injection spacing and times with respect to injection source dimensions and in-situ permeability. The validity of spherical and cylindrical flow model was not verified by any past research works covered in the literature review. Therefore, a theoretical investigation including grout flow models and significant grout parameters for the design of permeation grouting was conducted in this study. This two grout flow models were applied for three grout mixes prepared for w/c=0.75, w/c=1.00 and w/c=1.25 in this study. The relations between injection times, radius, pump pressure and flow rate for both flow models were investigated and the results were presented. Furthermore, in order to investigate these two flow model, some rheological properties of the grout mixes, particle size distribution of the cement used in this study and some geotechnical properties of the sand used in this work were defined and presented.

Complex Features of Azerbaijani National Identity and Its Implications for Foreign Policy (아제르바이잔 정체성의 복합적 성격과 대외정책에의 함의)

  • Kim, Young-Jin
    • International Area Studies Review
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    • v.13 no.2
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    • pp.789-812
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    • 2009
  • This paper aims to analyse the historical-cultural sources of Azerbaijani national identity through the aspects of the Persian, the Turkish and the Russian influences, and to illuminate its complex characteristics. Then it will be examined the impact and consequences that the Azerbaijani identity exerted on its foreign policy. In the modern world, identities are formed and represented within a variety of shifting social, political, economic, cultural, and discursive contexts. Such understandings can have exclusionary consequences, particularly in pluralistic environments. Since its independence, the PFA government resorted to the arguments of ethnic origin and Azerbaijan's Turkishness to achieve its goals. Domestically, the failure of the ethnicity-based foreign policy was so great that even Azerbaijani Kurds, who under the Soviets had been virtually absorbed into the Azeri population, felt alienated and betrayed. Internationally, Azerbaijan turned Russia and Iran against itself and reduced bargaining power of Turkey since the latter grew increasingly concerned not to exacerbate its relations with Russia.

The Method of Feature Selection for Anomaly Detection in Bitcoin Network Transaction (비트코인 네트워크 트랜잭션 이상 탐지를 위한 특징 선택 방법)

  • Baek, Ui-Jun;Shin, Mu-Gon;Jee, Se-Hyun;Park, Jee-Tae;Kim, Myung-Sup
    • KNOM Review
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    • v.21 no.2
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    • pp.18-25
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    • 2018
  • Since the development of block-chain technology by Satoshi Nakamoto and Bitcoin pioneered a new cryptocurrency market, a number of scale of cryptocurrency have emerged. There are crimes taking place using the anonymity and vulnerabilities of block-chain technology, and many studies are underway to improve vulnerability and prevent crime. However, they are not enough to detect users who commit crimes. Therefore, it is very important to detect abnormal behavior such as money laundering and stealing cryptocurrency from the network. In this paper, the characteristics of the transactions and user graphs in the Bitcoin network are collected and statistical information is extracted from them and presented as plots on the log scale. Finally, we analyze visualized plots according to the Densification Power Law and Power Law Degree, as a result, present features appropriate for detection of anomalies involving abnormal transactions and abnormal users in the Bitcoin network.

A literature review on burning mouth syndrome (구강작열감 증후군에 대한 논문 고찰)

  • Choi, Sung-Hyeon;Lee, Bin-Na;Lim, Hae-Soon;Oh, Won-Mann;Kim, Jae-Hyung
    • Journal of Dental Rehabilitation and Applied Science
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    • v.35 no.3
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    • pp.123-131
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    • 2019
  • Burning mouth syndrome (BMS) is defined as the xerostomia, burning sensation and various discomfort of tongue and oral mucosa. BMS can occur in both men and women, but is more frequent in middle-aged menopausal women. Because exact cause can't be identified clearly and it is hard to make diagnosis in clinic, the purpose of the treatment have been to relieve symptoms. Etiology of BMS is divided into local, systemic, and psychological factors. ${\alpha}$-lipoic acid, clonazepam, supplemental therapy and cognitive behavior therapy can be prescribed for BMS. Nowdays, many experts focus attention on effect of combination therapy. It is necessary to solve the symptoms of the patients by combination of pharmacological approach and psychotherapy with cognitive behavior therapy considering the factors in various aspects.

Judicial Review on Pre-arbitration Agreement in Terms to Resolve Franchise Dispute (프랜차이즈 분쟁계약상 사전중재합의에 관한 법리적 검토)

  • Sung, Joon-Ho
    • Journal of Arbitration Studies
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    • v.29 no.1
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    • pp.3-29
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    • 2019
  • A franchise business is a business in which the owners, or "franchisors," sell the rights to their business logo, name, and model to third party retail outlets, owned by independent, third party operators, called "franchisees." There are a number of features in franchising or terms in franchise agreements that may lead to disputes between franchisors and franchisees. These disputes may arise because of underlying risks in the franchise relationship, franchise agreement, or conduct of the parties. In this case, ADR is an effective way to resolve disputes in a quicker and often less costly way than having to go to court. If an agreement cannot be reached through mediation, then arbitration becomes the next step to resolving the differences. Whereas mediation is non-binding and focused on facilitating the parties to find a resolution that is acceptable to both, arbitration is binding and may result in a decision that is not acceptable to one of the parties. These situations can be resolved through experienced arbitration as arbitration allows franchisees to settle matters promptly and outside of the public eye. In addition, franchise dispute arbitration is usually less costly than going to traditional court. Considering all of these, reaching an agreement will also have typical clauses that address the issue of dispute resolution. It is again a more efficient process than going through the legal process and courts and is often less costly. By going through arbitration, the parties agree to give up their rights to pursue the dispute in the courts. However, there is a problem that the arbitration prior to the agreement and under the terms would be contrary to the restriction of jurisdiction under the "ACT ON THE REGULATION OF TERMS AND CONDITIONS" in Korea.

Features of Korean Feminist Design Studies: 1970~2018 (국내 페미니스트 디자인 연구의 특징: 1970~2018)

  • Kim, Lynn;Park, Soo-Jin
    • Journal of the Korea Convergence Society
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    • v.10 no.10
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    • pp.91-97
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    • 2019
  • In recent years, as feminism has emerged as a main value in Korean society, related design studies are also increasing. This research archived domestic feminist design studies to provide researchers with a genealogy of feminist design research. The research defines 'feminist design' prior to the collection of domestic feminist design studies, and examine the British-American history of the feminist design studies as an origin of the term. As a feature of the period, the number of feminist design studies surged in 1999, and since the 2000s, an average of 5.1 studies have been published annually. As a feature of each field, there were a lot of studies in fashion, visual, architecture, design science, product order in the whole studies. Feminist design researchers accumulate discourse on a clear line of studies and hope that this research will be renewed in the not too distant future.

An analysis of the construction elements of the "oversized" look in fashion collection since 2015 (2015년도 이후 패션 컬렉션에 나타난 오버사이즈 룩의 의복구성 특성 분석)

  • Kim, Kyung-A
    • The Research Journal of the Costume Culture
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    • v.27 no.5
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    • pp.433-448
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    • 2019
  • Oversized fashion is again in the spotlight due to the influence of retro fashion. This has created new fashion trends with methods different from those of the past. This analysis examines recent trends by sorting these looks according to new and different methods of judging their appearance. A new categorization of the oversized look and its configurations has been created, one which separates "big" looks, partial changes, and layered looks. This research was based on historical review and previous studies. Three thousand one hundred thirty-six photos of oversized looks that have appeared in collections over the past five years were gathered, and their appearance was categorized according to type. The categorization results showed that big looks (55.1%) were most prevalent, followed by partial alterations (36.35%), and layered looks (8.45%). In comparison to prior oversized clothing production, new permutations of the "Big" look expanded the silhouettes of torso, shoulders, neckline and collar. Partial changes have expanded from the broadened shoulders of the 1980s. Today these styles expand the shoulders and armholes vertically or horizontally, which dramatically exaggerates the sleeves and collar. The layered look no longer simply features overlapping layers but takes the form of over-layering through cuts and insertions. Through such analysis it is clear that modern oversized looks break away from the simple expanded forms and production methods of the past. They now attempt to realize an exaggerated beauty of form regarding each clothing component and also maximize decorative effects through innovative drafting or sewing methods.

Evaluation of Accession Function of the Standard Records Management System (표준 기록관리시스템의 인수 기능 평가 연계인수를 중심으로)

  • Park, Jong-yeon
    • The Korean Journal of Archival Studies
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    • no.37
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    • pp.239-271
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    • 2013
  • Records Management System(RMS) is a system for managing electronic records in records centers. However, RMS cannot content itself with the purpose of introduction and user demands. This is caused by lack of understanding the user's RMS and a review of the lack of detailed features. Therefore, the aim of this study reviews and evaluates a detailed accession function of RMS. Firstly, the study reviewed a detailed function of accession in RMS. Analysing the business processes that each function carried out, it defined functional requirements and investigated functional compliance as the check list which produced by the functional requirements definition. Finally, it surveyed and interviewed public records managers and analyzed the present situation of functional implementation of records accession function. Afterwards, improvement plans and implications were proposed through comparison of global-standard.

A Study on the Analysis of the Importance of Natural Landscape by the Development Project (개발사업에 의한 자연경관 영향 저감방안 중요도 분석에 관한 연구)

  • Shin, Min-Ji;Shin, Ji-Hoon
    • Journal of Korean Society of Rural Planning
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    • v.25 no.2
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    • pp.99-117
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    • 2019
  • Environmental impact assessment (EIA), which predicts, evaluates, and manages the influences on natural landscape, plays a role of monitoring natural resources for systematic management of natural landscape. However, the function of verification and correction of the system is still insufficient and feed-back, one of the most important features of EIA follow-up, has not been introduced in Korea's EIA system yet. As a procedure, it is required to check if the opinions of the evaluators are properly reflected to the outcomes of the project through a reviewing process after assessing environmental impacts of a development project. In reality, despite the awareness about the importance of follow-up inspection of the conformity with, the system mainly focuses on the agreement during the planning stage of the development project and fails to continuously manage after its completion. There have been various preceding studies related to prediction, evaluation, and management of environmental impacts on natural landscape for better management. They primarily dealt with the problems in the EIA process and suggested improvement measures, including directions for institutional development, step-by-step goals, and operation methods, to address the problems which arise in the EIA follow-up process. However, suggested measures are not actively applied with the focus only put on institutional operation, there are virtually no standardized methods to predict and assess landscape changes due to the development project and to manage landscape after the project. Against this backdrop, this study aims to explore the existing methods to analyze the impacts natural landscape and to establish a system where landscape management is continued after the development project. To this end, we will suggest reducing methods according to the predicted changes in landscape for post-project management of natural landscape. Characteristics of reduction methods by project type were examined through reviewing the guide to natural landscape rating and the importance of development project impacts on natural landscape by type of reduction was evaluated through questionnaire for experts. Evaluated types of reduction are classified and presented by characteristics of each development project and content of reduction type.

Venous malformations of the head and neck: A retrospective review of 82 cases

  • Park, Hannara;Kim, Jin Soo;Park, Hyochun;Kim, Ji Yoon;Huh, Seung;Lee, Jong Min;Lee, Sang Yub;Lee, Seok Jong;Lee, Joon Seok;Lee, Jeong Woo;Chung, Ho Yun
    • Archives of Plastic Surgery
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    • v.46 no.1
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    • pp.23-33
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    • 2019
  • Background Venous malformations (VMs) are a common type of vascular malformation. However, their causes and management remain unclear, and few studies specific to VMs of the head and neck have been reported. This study describes our experiences with VMs of the head and neck. Methods This retrospective study included 82 patients who underwent treatment for head and neck VMs, among 222 who visited our vascular anomalies center. Medical records between 2003 and 2016 were reviewed to identify common features in the diagnosis and treatment. The diagnosis of suspected head and neck VMs was based on the results of imaging studies or biopsies, and the VMs were analyzed based on magnetic resonance imaging, computed tomography, and Doppler sonography findings. Results VMs were slightly more common in female patients (59.8%), and 45.1% of patients developed initial symptoms at the age of 10 or younger. Lesions were slightly more common on the right side (47.3%). The main sites involved were the cheek (27.7%) and lip area (25.5%). The muscle layer was commonly involved, in 98.7% of cases. Small lesions less than 5 cm in diameter accounted for 60.8% of cases, and well-defined types were slightly more prevalent at 55.4%. Improvement was observed in 77.1% of treated patients. Conclusions Early and accurate diagnosis and appropriate treatment according to individual symptoms are important for successful treatment of VMs. If treatment is delayed, the lesions can worsen, or recurrence becomes more likely. Therefore, VMs require a multidisciplinary approach for early and accurate diagnosis.