Technology Legitimation: A Product‐Level Examination Across the Technology Lifecycle

2021 ◽  
Author(s):  
Raluca Bunduchi ◽  
Marina Candi
Keyword(s):  
Product Level ◽  
Technology Lifecycle

Calcium phosphate product level as a predictor for arteriovenous fistula re-operations in patients with chronic renal failure

Vascular ◽  
2018 ◽  
Vol 27 (3) ◽  
pp. 284-290 ◽  
Author(s):  
Mehmet Erin Tüysüz ◽  
Mehmet Dedemoğlu
Keyword(s):  
Renal Failure ◽  
Chronic Renal Failure ◽  
Calcium Phosphate ◽  
Arteriovenous Fistula ◽  
Product Level ◽  
Increased Risk ◽  
High Calcium ◽  
Phosphate Product ◽  
Group 2 ◽  
Group 1

Objectives There is an increased calcium phosphate product level causing the formation of calcification in the arterial wall and thus decreased quality of fistula in patients with chronic renal failure. The purpose of our study is to verify the relationship between arteriovenous fistula re-operation and high calcium phosphate product level. Methods Seventy-nine consecutive patients with chronic renal failure between April 2016 and February 2018 were included in the study. Patients having calcium phosphate product level ≥50 mg2/dl2 were defined as group 1, whereas those having <50 mg2/dl2 were defined as group 2. Primary outcome of interest was the need for re-operation during the follow-up and to determine the risk factors for re-operation. To determine independent predictors for re-operation, multivariate logistic regression model was used. Results The rates of redo and tredo operation were significantly higher in group 1 compared to group 2 ( p = 0.01 and 0.04). In multivariate analysis, phosphate (OR: 1.84, 95% CI: 1.00–3.40, p = 0.05) and triglyceride (OR: 1.01, 95% CI: 1.00–1.02, p = 0.04) levels for redo operation and calcium phosphate product level (OR: 1.11, 95% CI: 1.01–1.22, p = 0.03) for tredo operation were found to be independent predictors. Conclusions High calcium phosphate product level leads to increased risk of arteriovenous fistula re-operation by causing arterial stiffness in this patient group. Additionally, these re-operations place additional burden on morbidity and cost efficacy. Thus, we recommend keeping the calcium phosphate product level at the optimal level in these patients to avoid both the risk of arteriovenous fistula re-operation and the other cardiovascular problems.

scholarly journals Price-Efficiency Relationship for Photovoltaic Systems on a Global Basis

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Mehmet Sait Cengiz ◽  
Mehmet Salih Mamiş
Keyword(s):  
Power Systems ◽  
Electricity Generation ◽  
Economic Viability ◽  
Photovoltaic Systems ◽  
The World ◽  
The Future ◽  
Potential Factors ◽  
Technology Lifecycle ◽  
Price Analysis ◽  
The Cost

Solar energy is the most abundant, useful, efficient, and environmentally friendly source of renewable energy. In addition, in recent years, the capacity of photovoltaic electricity generation systems has increased exponentially throughout the world given an increase in the economic viability and reliability of photovoltaic systems. Moreover, many studies state that photovoltaic power systems will play a key role in electricity generation in the future. When first produced, photovoltaic systems had short lifetimes. Currently, through development, the technology lifecycle of photovoltaic systems has increased to 20–25 years. Studies showed that photovoltaic systems would be broadly used in the future, a conclusion reached by considering the rapidly decreasing cost of photovoltaic systems. Because price analysis is very important for energy marketing, in this study, a review of the cost potential factors on photovoltaic panels is realized and the expected cost potential of photovoltaic systems is examined considering numerous studies.

Upstream Carbon Dioxide Assessment at the Product Level

2013 ◽  
pp. 163-174 ◽  
Author(s):  
Bernhard Goldhammer ◽  
Polina Abrashkina ◽  
Christian Busse
Keyword(s):  
Carbon Dioxide ◽  
Product Level

Trade Sanctions and Customs Union Partners of the Target Country: Evidence from Kazakhstan

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Azat Aituar
Keyword(s):  
Time Series ◽  
Trade Flows ◽  
The Other ◽  
Customs Union ◽  
Western Countries ◽  
Product Level ◽  
Russian Economy ◽  
Trade Sanctions ◽  
Target Country ◽  
Overall Effectiveness

Abstract This paper analyses the effects of trade sanctions between Russia and Western countries on Kazakhstan. The nature of these sanctions is characterized by unilateral sanctions from Russia and multilateral sanctions against Russia. Although Kazakhstan refused to participate in these sanction wars, this might affect its economy significantly as it is highly integrated into the Russian economy. An empirical analysis is performed on the product level and time series techniques are used to estimate the effects of the sanctions. The paper assesses the overall effectiveness of trade sanctions through aggregating product level results into a sanction index. The derived sanction index shows that multilateral sanctions did not divert the trade flows from Western countries. On the other hand, the index indicates the existence of sanction busting activities against Russian unilateral counter-sanctions, confirming the hypothesis that unilateral sanctions are ineffective and allow for third-country effects.

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