Searching for an optimum transportation facility location with emergency equipment and staff is essential for a specific region or a country. In this direction, this study addresses the following ...problems. First, the performances of the Weiszfeld, tree-seed, and whale optimization algorithms are compared, which is the first of its kind in the literature. Second, a new approach that tests the importance parameters' effectiveness in searching for an optimum transportation facility location with emergency equipment and staff is proposed. The Weiszfeld algorithm finds viable solutions with compact data, but it may not handle big data. In contrast, the flexibility of the tree-seed and whale optimization algorithm is literally an advantage when the number of parameters and variables increases. Therefore, there is a notable need to directly compare those algorithms' performances. If we do, the significance of extending the number of parameters with multiple weightings is appraised. According to the results, the Weiszfeld algorithm can be an almost flexible technique in continuous networks; however, it has reasonable drawbacks with discrete networks, while the tree-seed and whale optimization algorithms fit such conditions. On the other hand, these three methods do not show a fluctuating performance compared to one another based on the locating transportation facilities, and thus they deliver similar performance. Besides, although the value of accuracy is high with the application of the conventional technique Weiszfeld algorithm, it does not provide a significant performance accuracy advantage over the meta-heuristic methods.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Schizophrenia is a choronic, complex and powerfully inherited mental illness that seriously affects quality of life. The illness is one of the most researched psychiatric disorders from past to ...present. This study aims to provide a holistic summary of the global scientific outputs through bibliometric analyses and reveal the trend topics. The articles published between the years 1975 and 2020 were downloaded from the Web of Science (WoS) database and analyzed using bibliometric methods. The literature review was conducted using the keyword ‘‘schizophren*’’ in the ‘‘Research Area’’ category. The relation between the number of publications of the countries and the Gross Domestic Products and Human Development Index values were analyzed using Spearman’s correlation coefficient. The number of articles between the years 2021 and 2032 was estimated through linear regression analysis.There were 103,992 publications, 51,117 of which were articles. The number of studies has increased in direct proportion to the development level of the countries. Schizophrenia Research was the most active journal. The most used research topics are cognition, negative symptoms, bipolar disorder, antipsychotics, depression, clozapine, quality of life. Trend keywords used in recent years are ‘inflammation’, ‘biomarker’, ‘oxidative stress’, ‘Brain Derived Neurotrophic Factor (BDNF)’, ‘social cognition’, ‘metacognition’, ‘motivation’, ‘social functioning’, ‘functioning’, ‘mental health’, ‘metabolic syndrome’, ‘functional connectivity’, ‘adherence’ and ‘recovery’ indicated new research frontiers in this field. Although schizophrenia has not been fully elucidated, studies are growing like an avalanche. Our study includes the most up-to-date and most comprehensive data ever made in this field.
Bu çalışma, Biden yönetiminin, Trump yönetiminin ABD’nin çıkarlarını önceleyen “Önce Amerika” yaklaşımını terk ederek, ABD’nin hem Çin karşısında hem de küresel meselelerde müttefik ve ortakları ile ...daha uyumlu hareket edebileceği, çok taraflı mekanizmaları devreye sokabileceği, Çin ile ikili ilişkilerinde özellikle insan hakları meselelerini öne çıkaracağı, bununla birlikte Çin’in aktif desteğine ihtiyaç duyduğu küresel sorunlarda da Pekin ile iş birliği yapabileceği bir strateji geliştireceğini savunmaktadır. Çalışma ayrıca Biden yönetiminin Obama’nın Asya’ya Dönüş stratejisi ile Trump’ın Serbest ve Açık Hint-Pasifik stratejisinin birleşiminden meydana gelen yeni bir Asya-Hint-Pasifik stratejisi izleyeceğini öngörmektedir. Bu çerçevede çalışma dört kısımdan oluşmaktadır. İlk kısımda Obama yönetiminin Çin ve Asya Pasifik politikası, Asya’ya Dönüş (Pivot to Asia) stratejisi bağlamında ele alınmaktadır. İkinci kısımda Trump yönetiminin Çin politikası, Hint-Pasifik stratejisi çerçevesinde kısaca incelenmektedir. Üçüncü kısımda Biden yönetiminin Çin’e yaklaşımı ve muhtemel Çin politikası değerlendirilmektedir. Son olarak, sonuç kısmında genel bir değerlendirme yapılmaktadır.
In this study, we propose a novel system for recovering waste heat of the automobile by means of a system based thermoelectric generator. The waste heat recovery (WHR) system is designed to be ...located after the exhaust manifold of the automobile for recovering and using the recovered heat, and it consists of a shell and tube heat exchanger whose pipes are covered with thermoelectric materials. The exhaust gas of the automobile supplies the heat for the thermoelectric generator (TEG), and the incoming air from the front grill maintains the temperature difference for the TEG. Three different Perovskite-type oxide combined thermoelectric materials (CaMn0.98Nb0.02O3, La1.98Sr0.02CuO4 and GdCo0.95Ni0.05O3) are selected, considered and analyzed numerically. The variations of material properties, efficiency and power generated with respect to temperature and position are presented. The overall heat to electricity conversion efficiency of the TEG system is introduced by dimensionless quantities. The overall energy and exergy efficiencies of the heat recovery system are correlated and presented.
In this paper, the author determines the most suitable transportation location for intervention in a large scale disaster in the Republic of Bulgaria, by means of the Weber Problem and the Weiszfeld ...method. The objective is to minimise the cost of transporting emergency supplies across the country by locating a support facility, and thus reaching the area of event at the lowest possible cost. A brief description of the Weiszfeld method is provided in the paper. Further, using recent population data of both provinces and municipalities, the method is applied respectively to obtain the results. They were compared in terms of spatial correspondence and the final facility location was fixed. Erecting the supply site is recommended to help decrease the losses.
Introduction: The cerebellum has been regarded as a valuable research topic over the years because of its numerous roles in motor and nonmotor functions. The aim of the current study was to provide a ...comprehensive and holistic evaluation of publications concerning the cerebellum over the last 40 years which can be a potential guide for future research related to the cerebellum. Material and Methods: The Web of Science database was used to identify the publications relating to the cerebellum between 1980 and 2019. The identified publications were analyzed using the bibliometric approaches. The number of the publications concerning the cerebellum to be published between 2020 and 2028 was predicted using the linear regression analysis. Results: The literature review revealed a total of 33,186 publications. The top three active countries were found to be the USA (7362), Japan (2987), and the UK (1994). A positive and significant correlation was found between the number of cerebellum articles produced by the countries and the development indexes of the countries (r = 0.743, P < 0.001; r = 0.676, P < 0.001, r = 0.656, P < 0.001). The top three productive journals were found to be the Journal of Neuroscience, Brain Research, and Cerebellum. The total number of cerebellum publications is expected to continue in an increasing trend and reach a total of 891 publications at the end of 2028. Discussion and Conclusion: Recent studies on the cerebellum have mostly focused on the cerebellar degeneration, functional connections of the cerebellum, and its relationship with various diseases such as ataxia, schizophrenia, Parkinson's disease, autism, and aneurysms.
In the first three decades after China initiated reform and opening-up policies
in 1978, its relations with the United States (U.S.) improved steadily. However,
in the post-2007/2008 global financial ...crisis period, both countries’ attitudes
toward each other began to change. Particularly since the Trump administration,
as the U.S. started to define China as its main competitor, their bilateral relations
deteriorated further. As a result, scholars, diplomats, and politicians worldwide
began to talk about the emergence of a new Cold War between China and the
U.S., encompassing economic, ideological, military, and political aspects. The
ideological aspect of this emerging “new Cold War” revolves around the discourse
of democracy.
There is an increasing interest in the effects of preoperative anxiety on the course and outcomes of surgical treatments and also in the studies about the anxiety-decreasing interventions. The ...present study aims to identify the relationship between the preoperative anxiety level of the individuals prior to aesthetic surgery operations such as nose, ear, eyelid, and mammoplasty and religious rituals such as performing prayers, fasting, and going to pilgrimage. The frequency of performing the religious rituals was identified through a questionnaire. The questionnaire included questions about the religious rituals such as performing prayers, going to a pilgrimage, and fasting as well as questions about sociodemographic features such as gender, age, and education level of the patients. Preoperative anxiety level was measured using the "Anxiety Specific to Surgery Questionnaire." The nonparametric Mann-Whitney U test was used for the scale score comparisons of the two independent groups. The scale score comparisons of more than two groups were performed using the Kruskal-Wallis test. The relationships between age and scale scores were analyzed using the Spearman's correlation coefficient. The study involved 117 patients who were planned to undergo an aesthetic surgery operation. The scale scores were significantly different according to the pilgrimage groups (p = 0.004). The scale scores were significantly different according to the level of fasting (p = 0.022). No significant differences were found between the scales scores of the groups who reported the frequency of performing prayer as never, sometimes or five times (p = 0.515). In conclusion, the present study found that Muslim people who performed religious rituals more often experienced less preoperative anxiety levels in plastic surgeries, which indicates that the belief level is an effective factor in preoperative anxiety levels. The findings of the present study indicate that patients' beliefs and worship practices should be taken into consideration by doctors, operating room personnel, and even all health workers in order to decrease the anxiety levels of patients who will undergo surgery.
This study aims to investigate the relationship between individuals' attitudes about acceptance of aesthetic surgery (e.g. rhinoplasty, autoplasty, blepharoplasty, and mammaplasty) and some of the ...worship practices in Islamic religion such as performing prayer, fasting, and going to pilgrimage. Although many people think that aesthetic surgery is inappropriate in Islamic religion, no studies in the literature were found to have investigated this issue. This study collected data through a questionnaire administered to 96 patients who applied to our Plastic Surgery Clinic and underwent various surgical operations and 96 patients who were recommended plastic surgery but rejected to have one; the questionnaire aimed to identify the participants' frequency of religious worship practices and appropriateness of aesthetic surgery to their beliefs. The participants responded on the frequency of religious worship levels according to the options in the questionnaire. The "Acceptance of Cosmetic Surgery Scale" was utilized in order to identify their attitudes towards aesthetic surgery. Levels of performing prayers, fasting, and going to pilgrimage in the groups that accepted surgery and in the groups that rejected surgery were significantly different (p < 0.001, p = 0.008, p < 0.001). In two different groups, the Acceptance of Aesthetic Surgery Scale scores were significantly different within the prayer groups and fasting groups (p < 0.001, p < 0.001, p = 0.001, p < 0.001). While the group that accepted surgery indicated no significant differences between those who thought about going to pilgrimage and who did not (p = 0.650), there was a significant difference in the group that rejected surgery (p < 0.001). While 14.6% of the participants in the group that accepted surgery considered aesthetic surgery a sin, this proportion was 56.3% in the group that rejected surgery, and this difference was significant (p < 0.001). In both surgery groups, there were differences in the scale scores of those who considered aesthetic surgery a sin and those who did not (p < 0.001, p < 0.001). There was a significant relationship between worship practices, one of the biggest indicators of the level of belief in Islamic religion, and aesthetic surgery attitudes. However, despite the fact that belief levels affect the decision of having an operation in plastic surgery, in case of serious health problems, the decision of having an operation becomes more important religious beliefs.
Objective
This study aims to make a bibliometric analysis of the most commonly performed bariatric procedures between the years 2006 and 2016 and identify the most popular procedure in the field of ...bariatric surgery (BS).
Background
Despite the fact that BS popularity has been increasing considerably in recent years, the literature indicates insufficient information regarding the comparison of the methods used in BS.
Methods
The terms “Sleeve Gastrectomy,” “Gastric Bypass,” or “Gastric Band” were searched in Web of Science for the years between 1980 and 2016. All the publications found were subjected to bibliometric analysis.
Results
WoS database included 3501 publications about the sleeve gastrectomy keyword, 7278 publications about the gastric bypass keyword, and 2692 publications about the gastric band keyword. USA was found to be the most active country in all methods, and the authors who had most publications were Gagner M (64, 1.8%) for sleeve gastrectomy, Le Roux CW (83, 1.1%) for gastric bypass, and O’brien PE (50, 1.9%) for gastric band. “Obesity Surgery” was the journal that contributed most to the literature in all three obesity surgery procedures.
Conclusion
Despite the fact that the top procedure was Roux-en-Y gastric bypass in terms of bibliometrics, the most popular procedure was found to be sleeve gastrectomy. According to the percentage of the increase in publications and citations, sleeve gastrectomy was found to be the method which showed the highest increase rates in recent years.
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