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      • KCI등재후보

        High School Student-Teachers Attempts to Justify Mathematical Propositions Utilizing Spatial Structuring on Shape Transform

        ( Rahim,Medhat H ),( Siddo Radcliffe A ) 한국수학교육학회 2012 수학교육연구 Vol.16 No.2

        A group of twenty-nine high school student-teachers were given a set of mathematical propositions focusing on shape-to-shape transformations. Their task was to determine through hands-on manipulation and use of dynamic software that each shape be transformed into an area equivalent rectangular region. This paper reports on a classroom-based research.

      • KCI등재

        Application of SSR Markers for Characterization of Genetic Diversity within Iranian Grapevine Cultivars (‘Askari’ and ‘Keshmeshi’)

        Rahim Nikkhah,Ali Ebadi,Mohammad Reza Naghavi,Mauro Cresti,Monica Scali,Mehdi Hadadynejad 한국원예학회 2010 Horticulture, Environment, and Biotechnology Vol.51 No.1

        The present study was designed to identify intra-varietal diversity via SSR markers within ‘Askari’ and ‘Keshmeshi’ (Vitis vinifera L.). These two semi-seedless grape cultivars are used as table grape and raisin. Some accessions of these cultivars are morphologically different. For instance, some accessions had big berries with big bunches and empty seeds, whereas others had small berries in small bunches with soft seed traces. In order to evaluate these differences at the genetic level, we selected 14 SSR loci to evaluate intra-cultivar diversity. In total, 42 accessions of ‘Askari’, 10 accessions of ‘Keshmeshi’ and one accession of Sultanina as a control were analysed, using a capillary electrophoresis fragment sizing system. Genetic analysis discriminated six accessions of ‘Askari’ (No. A3, A21, A31, A44, A46, and A114) which were different from other accessions. These accessions were also different in some morphological traits. Accessions no. A3 and no. A21 had soft seed traces with berries and bunches that were smaller than others. Other accessions had empty seeds. Accessions no. A44, A46 and A114 had big bunches, big berries and empty seeds. In accession no. A31 berry shape was approximately round vs. oval shape in other accessions. The remaining accessions (36 accessions) were identical in 14 SSR loci. In ‘Keshmeshi’ four different accessions (No. K6, K8, K15, and K27) were discriminated in genetic analysis. In accessions no. K6 and no. K8, the number of bunch and yield per vine was higher than other accessions. In accessions no. K15 and no. K27, berries and bunches were bigger than others and the number of seed traces were higher than other accessions. Other six accessions were identical in14 SSR loci. Cluster analysis of all three cultivars divided accessions to three groups (each cultivar in one group) at 0.67 similarity coefficient. Our study showed SSR markers can be useful for identifying of intra-cultivar diversity.

      • KCI등재

        Hearing Screening Alternative Using a Website-Based Application

        Rahim Tety Hadiaty,Sunjaya Deni Kurniadi,Hilmanto Dany,Hasansulama Wijana,Putra Frans Zefanya 대한청각학회 2023 Journal of Audiology & Otology Vol.27 No.3

        Background and Objectives: Indonesians encounter several barriers to regular functional hearing assessment. Hearing loss screening is only provided by tertiary-care hospitals that are not reachable by people in remote regions. This study aimed to develop a website-based hearing screening application that is accessible and inexpensive.Subjects andMethods: This comparative study was conducted between July and August 2022 in the Otolaryngology Clinic of Muhammadiyah Bandung Hospital with noise levels below 50 dB. The hearing screening was conducted using a website-based application (www.Screenout.id) and audiogram as the gold standard method. On ScreenOut, patients heard sounds with frequencies at 500, 1,000, 2,000, 4,000, and 8,000 Hz and sound intensity of each frequency at 35, 55, and 75 dB using earphones.Results: A total of 133 participants were enrolled in our study. ScreenOut showed high sensitivity, specificity, accuracy, positive predictive value, and negative predictive value (90.9%, 98.9%, 93.6%, 99.4%, and 84.8%, respectively). Regarding hearing threshold, a very strong correlation was found between ScreenOut and audiogram, ranging between r=0.843 and r=0.899. Aside from that, there was no significant difference in hearing threshold values between ScreenOut and audiogram.Conclusions: Many advantages of the ScreenOut were found, including low-cost, accessibility, and easy-to-use interface, making it favorably used in low–middle-income countries such as Indonesia.

      • KCI등재
      • Patterns for Development of Windows Form Applications and Web Applications

        Rahim Lotfi 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.6

        Design pattern is a mechanism to show experience in object-oriented design, as well as an appropriate solution which has been provided by experts for particular problems and which can be used over and over throughout the design. Using design patterns helps improve software quality and reusability. There are different patterns for development of data source (database, file, array, etc.) systems but most of them have features that are not appropriate for code generation. We seek in this research new patterns for development of data source systems that can accelerate the development of such systems and reduce costs and are appropriate for code generation as well. This article deals with challenges related to prototype, singleton and MV* (MVC, MVP, MVVM) patterns. As a solution, we will propose two patterns called MVC+ and MVC++ as well as a tool called LCG for code generation. We compare the proposed patterns with similar patterns in terms of efficiency. MVC+ and MVC++ are appropriate for model-driven architecture, code generation and the development of windows form applications and web applications.

      • SCIESCOPUSKCI등재

        ORiginal Article : Characterization and Prognostic Value of Mutations in Exons 5 and 6 of the p53 Gene in Patients with Colorectal Cancers in Central Iran

        ( Rahim Golmohammadi ),( Mohammad J Namazi ),( Mehdi Nikbakht ),( Mohammad Salehi ),( Mohammad H Derakhshan ) The Editorial Office of Gut and Liver 2013 Gut and Liver Vol.7 No.3

        Background/Aims: We aimed to investigate the relationships among various mutations of the p53 gene and their protein products, histological characteristics, and disease prognosis of primary colorectal cancer in Isfahan, central Iran. Methods: Sixty-one patients with colorectal adenocarcinoma were enrolled in the study. Mutations of the p53 gene were detected by single-stranded conformation polymorphism and DNA sequencing. The protein stability was evaluated by immunohistochemistry. Patients were followed up to 48 months. Results: Twenty-one point mutations in exons 5 and 6 were detected in the tumor specimens of 14 patients (23%). Of those, 81% and 9.5% were missense and nonsense mutations, respectively. There were also two novel mutations in the intronic region between exons 5 and 6. In 11 mutated specimens, protein stability and protein accumulation were identified. There was a relationship between the type of mutation and protein accumulation in exons 5 and 6 of the p53 gene. The presence of the mutation was associated with an advanced stage of cancer (trend, p<0.009). Patients with mutated p53 genes had significantly lower survival rates than those with wild type p53 genes (p<0.01). Conclusions: Mutations in exons 5 and 6 of the p53 gene are common genetic alterations in colorectal adenocarcinoma in central Iran and are associated with a poor prognosis of the disease. (Gut Liver 2013; 7:295-302)

      • Breast Cancer Frequency and Exposure to Cadmium: A Meta-Analysis and Systematic Review

        Rahim, Fakher,Jalali, Amir,Tangestani, Raheleh Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.7

        Background: In this meta-analysis we review evidence suggesting that exposure to cadmium is a cause of breast cancer. Materials and Methods: We conducted Medline/PubMed and Scopus searches using selected MeSH keywords to identify papers published from January 1, 1980 through January 1, 2013. Data were merged and summary mean differences were estimated using either a random-effects model or a fixed-effects model. Results: There were 13 studies including 978 exposed cases and 1,279 controls. There was no statistically significant difference in the frequencies of breast cancer between cadmium-exposed and control groups, and the summary estimate of mean difference was 0.71 (95%CI: 0.33-1.08). However, stratification showed that there were statistically significant differences in the frequencies of breast cancer between cadmium-exposed and control groups among Asian compared with Caucasian population, and the summary estimates of mean difference were 1.45 (95%CI: 0.62-2.28) vs. 0.25 (95%CI: -0.09-0.6), respectively. There was a difference in the frequencies of breast cancer between cadmium-exposed and control groups in peripheral venous blood sampling methods, and the summary estimate of mean difference was 1.41 (95%CI: 0.46-2.37). Conclusions: Data indicate that the frequencies of breast cancer might be an indicator of early genetic effects for cadmium-exposed populations. However, our meta-analysis was performed on population-based studies; meta-analysis based on individual data might provide more precise and reliable results. Therefore, it is necessary to construct an international database on genetic damage among populations exposed to cadmium that may contain all raw data of studies examining genetic toxicity.

      • Talesh is the Unique Sample of Cultural Tourism Attractions

        Rahim Sarvar,Mohsen Ranjbar,Sharareh Nourani 세계문화관광학회 2009 Conference Proceedings Vol.10 No.0

        Talesh is the name of a country in green Gilan province which is located in the north of Iran. It is located at 4854' east longitude and 37 48' north latitude.This area with nearly 270000 population is one of the most wonderful and various cultural tourism region of Iran. This area is about 90 Km long and 30Km wide, a unique center of cultural attractions that is mingled with historical and natural attractions, that it's ancient is 3000years ago. There is Alborz mountains at west part of Talesh and Caspian Sea at east part of it. At this apparent small area we can observe a world of variety, local markets, historical traces special traditions and civilities, cultural and sporting ceremonies and special program to plant and harvest of rice, producing silk and fishing, the method of making house, different kinds of carpet, hand crafts, seasonal emigration are just a small part of tourism attractions of this area. The main purpose of this article is introducing Talesh area as a complete collection of cultural tourism attraction not only in middle east but also in the world. To prepare this article all the documents has been researching.

      • KCI등재

        Advanced bibliometric analysis on the coupling of energetic dark greenhouse with natural gas combined cycle power plant for CO2 captur

        Rahim Zahe,Alireza Aslani,Mohammad Ali Nasle Seraji,Zahra Zolfaghari 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.11

        Increasing energy demand along with environmental effects of fossil fuels have created serious environmental, economic, and social challenges for societies. To respond to these challenges, greenhouse gas (GHG) reduction strategies such as diffusion and adoption of renewable energy (RE) technologies and carbon capturing techniques are two of the important solutions. The most important GHG emissions sources are Coal-Fired power plants and Natural Gas Combined-Cycle (NGCC) power plants. One way to help reduce GHG emissions, especially CO2 emissions, is to use energetic dark greenhouse. Greenhouse uses sunlight and CO2 to grow and produce O2 based on the photosynthesis process. Therefore, it has a great potential for CO2 capturing and utilization that a few research has considered this potential. This paper investigates CO2 Capture by greenhouse from combined cycle power plants using bibliometric analysis and data mining. According to the main keywords in the studies by VOSViewer software, a word cloud is obtained from all related topics. The number of articles published in different years are obtained and each of the cluster’s placement in each Cooperative Patent Classification (CPC) is examined by Google Patent and International Patent Classification (IPC). Finally, data-mining analysis based on the bibliometric method to find the research progresses, trends, and existing gaps to look at energetic dark greenhouse as a CO2 capturing technology is used. Market failures are identified and from a policy perspective, solutions to improve those failures are proposed. It is concluded that one of the best CCS technologies at the NGCC power plant is coupling it with energetic dark greenhouse due to lower regeneration energy.

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