An architecture for a focused trend parallel web crawler with the application of clickstream analysis

The tremendous growth of the Web poses many challenges for all-purpose single-process crawlers including the presence of some irrelevant answers among search results and the coverage and scaling issues regarding the enormous dimension of the World Wide Web. Hence, more enhanced and convincing algorithms are on demand to yield more precise and relevant search results in an appropriate amount of time. Since employing link based Web page importance metrics within a multi-processes crawler bears a considerable communication overhead on the overall system and cannot produce the precise answer set, employing these metrics in search engines is not an absolute solution to identify the best search answer set by the overall search system. Thus considering the employment of a link independent Web page importance metric is required to govern the priority rule within the queue of fetched URLs. The aim of this paper is to propose a modest weighted architecture for a focused structured parallel Web crawler which employs a link independent clickstream based Web page importance metric. The experiments of this metric over the restricted boundary Web zone of our crowded UTM University Web site shows the efficiency of the proposed metric

Sentiment Mining on Products Features based on Part of Speech Tagging Approach

Abstract In today's competitive business, paying attention to the feedback from customers has become a valuable factor for organizations. Organizations have found that satisfied customers are not only a repeated buyer, they are also propaganda arm of the organization. Therefore, the correct analysis of their feedback by relying on information technology tools is a key element in the success of the organizations in trade. People generally share their opinions about purchased goods on the Web sites or in social networks. Extraction of these opinions is known as a special branch of text mining under the term of sentiment mining. Although this category is brand new, but in recent years, extensive researches have been done on sentiment analysis and classification of intentions. Therefore, in this paper a model is suggested about sentiment mining with the ability to extract users' opinion and product features. So dataset of customer comments has been made in a way that the comments are taken from a Website about some specific digital products. Then the paragraphed opinions are converted into sentences and the sentences are separated into two categories of subjective and objective. Next, user's opinion and product features are taken from subjective sentences by using StanfordPOStagger and relying on Tf-idf factor for product features and finding opinion polarity by using SentiWordNet tools. In this way, user satisfaction of specific features of the product can be detected. As a means of evaluation, three factors of Recall, Precision and F-Measure provide an indication of the accuracy of each part of this research

The impact of organizational innovation through innovation capabilities in ‎process and product on the performance of manufacturing firms

Abstract Innovation is considered as a critical factor for organizations to create value and ‎sustainable competitive advantage in today's complex and changing environment. ‎Organizations with more innovation, in response to the changing environments and ‎creating development of new capabilities that allows them to achieve better ‎performance will be more successful. The aim of current study is to investigate the ‎impact of organizational innovation through innovation capabilities in process and ‎product on the performance of manufacturing firms in Rasht Industrial Town. This ‎research paper is a kind of descriptive and correlation study. The statistical population ‎includes all companies in the industrial city of Rasht (n = 157). Simple random ‎sampling method has been applied, and SPSS 20 and warp pls5 software has been ‎used in order to analyze acquired data. The results indicated that there is a positive ‎relationship between organizational innovation and process innovation capabilities. ‎There was also a positive relationship between organizational innovation and ‎performance through process innovation capabilities. Also a positive relationship ‎between product innovation and company performance and a positive relationship ‎between organizational innovation and performance through product innovation ‎capabilities were observed.

The first human experience of a contact force sensing catheter for epicardial ablation of ventricular tachycardia

Contact force (CF) is one of the major determinants for sufficient lesion formation. CF-guided procedures are associated with enhanced lesion formation and procedural success.We report our initial experience in epicardial ventricular tachycardia (VT) ablation with a force-sensing catheter using a new approach with an angioplasty balloon. Two patients with arrhythmogenic right ventricular cardiomyopathy who underwent prior unsuccessful endocardial ablation were treated with epicardial VTablation. CF data were used to titrate force, power and ablation time

Clinical outcome of ablation for long-standing persistent atrial fibrillation with or without defragmentation

Objective To assess the outcome and associated risks of atrial defragmentation for the treatment of long-standing persistent atrial fibrillation (LSP-AF). Methods Thirty-seven consecutive patients (60.4±7.3 years; 28 male) suffering from LSP-AF who underwent pulmonary vein isolation (PVI) and linear ablation were compared. All patients were treated with the Stereotaxis magnetic navigation system (MNS). Two groups were distinguished: patients with (n =20) and without (n =17) defragmentation. The primary endpoint of the study was freedom of AF after 12 months. Secondary endpoints were AF termination, procedure time, fluoroscopy time and procedural complications. Complications were divided into two groups: Major (infarction, stroke, major bleeding and tamponade) and minor (fever, pericarditis and inguinal haematoma). Results No difference was seen in freedom of AF between the defragmentation and the non-defragmentation group (56.2 % vs. 40.0%, P=0.344). Procedure times in the defragmentation group were longer; no differences in fluoroscopy times were observed. No major complications occurred. A higher number of minor complications occurred in the defragmentation group (45.0 % vs. 5.9 %, P=0.009). Mean hospital stay was comparable (4.7±2.2 vs. 3.4±0.8 days, P=0.06). Conclusion Our study suggests that complete defragmentation using MNS is associated with a higher number of minor complications and longer procedure times and thus compromises efficiency without improving efficacy

Clinical experience with a novel subcutaneous implantable defibrillator system in a single center

Background: Implantable cardioverter-defibrillators (ICDs) reduce mortality in both primary and secondary prevention, but are associated with substantial short- and long-term morbidity. A totally subcutaneous ICD (S-ICD) system has been developed. We report the initial clinical experience of the first 31 patients implanted at our hospital. Methods: All patients had an ICD indication according to the ACC/AHA/ESC guidelines. The first 11 patients were part of the reported CE trial. The implantation was performed without fluoroscopy. The device was implanted subcutaneously in the anterior axillary line, with a parasternal lead tunneled from the xiphoid to the manubrial-sternal junction. Ventricular fibrillation (VF) was induced to assess detection accuracy and defibrillation efficacy using 65 J shocks. Results: Post-implant, 52 sustained episodes of VF were induced. Sensitivity was 100% and induced conversion efficacy was 100% (with standard polarity in 29 patients). Mean time to therapy was 13.9 ± 2.5 s (range 11-21.6 s). Late procedure-related complications were observed in 2 of the first 11 implantations (lead migration). During follow-up, spontaneous ventricular arrhythmias occurred in four patients, with accurate detection of all episodes. Inappropriate therapy was observed in five patients. Recurrences were prevented with reprogramming. Conclusions: The S-ICD system can be implanted without the use of fluoroscopy by using anatomical landmarks only. Episodes of VF were accurately detected using subcutaneous signals, and all induced and clinical episodes were successfully converted. The S-ICD system is a viable alternative to conventional ICD systems for selected patients

An economical survey on polyculture of Indian and Chinese carps and its market

Regarding the natural potential and socio-economic advantages of aquaculture development, extension of aquaculture has been raised as one of the priorities of the second to fifth national programs of the Islamic Republic of Ira in the fisheries sector in the past ten years. Proliferation and aquaculture development also plays an important role in increasing employment, exportation, and rural development in rural areas. Although the physical capacities of aquaculture development may be clear, it is necessary to analyze the profitability of farmers and fish market as well. In recent years, reproduction and breeding of new species, in order to increase the income of farmers, have been put on the agenda of the Fisheries Research Institute. In order to increase the maximum utilization of production capacity and increase the warm water pond valume per unit area of land, three species of Indian carp has been imported. The main problems of aquaculture economical research include inadequate information and lack of the collaboration between different experts and aquaculture farmers. The objective of the research was to survey of economical aspects for culturing the imported Indian carp. The fingerlings of the imported species were transferred to the target centers, Southern aquaculture Research institute and Inland waters Aquaculture Research institute. The experiment was carried out as three treatments in triplicates for 9 months. To determine the cost of production and the share of the cost of production factors for farmed fish carp, including the cost of labor, cost of fingerlings, feed and fertilizer costs, maintenance costs, energy costs, depreciation of structures, equipment and buildings for administrative and other costs; past experiences, information and other resources and external experiences questionnaire was employed