186,501 research outputs found
Motivation in Crowdfunding: Crowdfunding Experiments on Social and Commercial Projects
No full textBaza danych zawiera wyniki serii eksperymentów online dotyczących finansowania społecznościowego (crowdfundingu), obejmujących zarówno projekty społeczne, jak i komercyjne. Każdy arkusz w pliku odpowiada osobnej serii eksperymentów (trzy serie) które testują wpływ różnych czynników na decyzje o wsparciu kampanii, a także postawy i opinie na jej temat.Pierwszy eksperyment to reakcje potencjalnych wspierających na wizualne elementy kampanii. Porównane są reakcje wobec kampanii zawierających zdjęcia wykonane wyłącznie wykonane przez fotografów oraz wobec kampanii ze zdjęciami wygenerowanymi przez sztuczną inteligencję (AI). Dane przedstawiają także reakcje na zdjęcia zawierające elementy personalizowane (ludzie, twarze) oraz zdjęcia bez takich elementów. Drugi eksperyment to reakcje i opinie potencjalnie wspierających na informację finansowe (budżet) projektu, w szczególności zebrane są dane dotyczące reakcji na informacje ogólne i szczegółowe, a także znaczenia w tym kontekście poparcia udzielonego przez formalną organizację pozarządową. Trzeci eksperyment pogłębia znaczenie komunikatów w kampanii crowdfundingowej (tekst) w odniesieniu do projektów nakierowanych na ochronę środowiska, łączących elementy kampanii społecznej i komercyjnej. W bazie ujęto opis wykorzystanych zmiennych, informacje na temat kodowania danych oraz źródła wykorzystanych narzędzi. Dane te mogą być wykorzystane do analizy i zrozumienia znaczenia elementów kampanii crowdfundingowych motywujących do ich wspierania, oraz do testowania hipotez dotyczących zachowań prospołecznych i inwestycyjnych.This dataset contains the results of a series of online experiments on crowdfunding, covering both social and commercial projects. Each sheet in the file corresponds to a separate series of experiments (three in total) that test the influence of various factors on decisions to support a campaign, as well as participants’ attitudes and opinions about the campaign.The first experiment examines potential supporters’ reactions to the visual elements of crowdfunding campaigns. It compares responses to campaigns featuring photos taken exclusively by professional photographers with responses to campaigns featuring AI-generated photos. The data also capture reactions to images containing personalized elements (such as people or faces) compared to images without such elements.The second experiment focuses on potential supporters’ reactions and opinions regarding the financial information (budget) of a project. In particular, it includes data on reactions to general vs. detailed budget information, as well as the role of endorsement from a formal non-governmental organization (NGO) in shaping support decisions.The third experiment explores the importance of campaign messages (text) in crowdfunding campaigns for environmental projects that combine features of both social and commercial initiatives.The dataset includes a description of the variables used, details of data coding, and sources of the measurement instruments. These data can be used to analyze and understand which elements of crowdfunding campaigns motivate support and to test hypotheses about prosocial and investment-related behaviors.</p
Bethe-Salpeter equation approach with electron-phonon coupling for exciton binding energies
No full textWe introduce a simple scheme in order to account for the coupling with longitudinal phonons within the first-principles Bethe-Salpeter approach based on many-body perturbation theory. This allows one to evaluate the reduction of exciton binding energies observed in polar semiconductors. The electron-phonon coupling is modeled from the macroscopic dielectric response in the infrared which, in turn, is calculated through density functional perturbation theory. In this way, the additional computational cost determined by our method is negligible. We first illustrate our approach in the case of bulk ZnS. Then, we discuss the limit of the Bethe-Salpeter equation in the case of strongly delocalized excitons and we show how the excitonic series of bulk Cu2O is well reproduced
Masa ochronna do obmurzy pieców przemysłowych, zwłaszcza pieców hutniczych opis patentowy nr 53959 /
No full textTyt. z ekranu tyt.Zgłoszono 9 listopada 1965 r.Opublikowano 30 września 1967 r.Pozostali twórcy wynalazku: Władysław Bieda, Hanna Laurecka, Danuta Adamska, Aleksander Karpała.Numer zgłosz. P 111 522Dostępny także w wersji drukowanej.Tryb dostępu: Internet
Crowdfunding backers' motivation: social and commercial projects
No full textThe database comprises data collected through a survey aimed at understanding backers’ motivations in crowdfunding, with a particular focus on social vs. commercial projects. The purpose of the data is to deepen our nderstanding personal traits that may influence support for crowdfunding.The database includes responses from participants with and without prior crowdfunding experience, primarily from the UK, but also from several other European countries and the United States. The database is split into three main datasets and one sheet providing variable explanations (legend).Database_1: This dataset assesses intrinsic psychological traits and financial well-being. Examples of variables: Openness to experience, theory of planned behavior constructs; subjective financial wellbeing. Demographics included: Gender, Age, Education Level, Place of Residence, Employment Status.Database_2: This dataset focuses on ethical and social dimensions of backers’ motivation. Variables include, e.g.: community engagement, philanthropic responsibility, altruistic motivation, intentions to support social and commercial projects, etc. Demographics repeated: Gender, Age, Education, etc.Database_3: Detailed records of actual crowdfunding behavior and preferences in terms of rewards’ preferences. Examples of variables: Preferred rewards’ types; reward and altruistic motivation, subjective norms, economic responsibility, etc. Demographics included again, plus more internet usage habits.Variables sheet contains decoding of categorical variables (e.g., what numeric codes mean for location or education) + references.This structured database is suitable for segmenting crowdfunding backers based on psychological and social traits and analyzing differences in motivation between backers of socially-oriented vs. commercially-oriented projects.</p
Assessment of awareness of human papillomavirus infection impact on oral cavity among patients
No full textIntroduction: Human papillomavirus (HPV) is responsible for oral cavity lesions such as squamous papilloma, multiform epithelial hyperplasia, condylomata acuminata, giant cell fibroids or squamous cell carcinoma. Aim: To assess the patients' awareness of HPV infection's impact on oral health. Material and methods: This was a prospective study of dental patients who were treated in the Department of Oral Surgery at the Medical University of Gdańsk (Gdańsk, Poland) from January to February 2019. Inclusion criteria were as follows: Polish-speaking patients over 18 years old. Exclusion criteria were as follows: People with limited Polish language knowledge and under 18 years old. Participation was voluntary based on the written consent. Descriptive and bivariate statistics were computed and the p-value was set at ≤ 0.05. Results: Three hundred and sixty-three people (58.13%: Females; 41.87%: Males; mean age 21 years, range: 18-65) were included in the study. Women were more aware what HPV was (p = 0.011), the fact that HPV infection could be latent (p = 0.018), responsible for the oral cancer (p = 0.032), there was an HPV vaccine (p < 0.001), and how to prevent infection (p < 0.001); relationship between age and the fact that HPV infection may be responsible for the oral cancer (p = 0.007), HPV infection methods (p < 0.001), characteristics of the lesions caused by the HPV on the mucous membrane (p < 0.001), and how to prevent infection (p = 0.044). Conclusions: Our study suggests that patients' awareness of the influence of HPV infections on oral health is limited. Therefore, more attention should be paid to the education of the patients and to prevention programs
Multiple odontogenic keratocysts in Ehlers–Danlos syndrome: a rare case report
No full textBackground: An odontogenic keratocyst is a lesion characterized by aggressive and infiltrative growth. The lesion is characterized by the existence of satellite microcysts (microtumours) and frequent recurrence (up to 30%). Ehlers–Danlos syndrome is a condition in which collagen production or its post-translational modifications are affected. Defects in connective tissues cause symptoms, which range from mild joint hypermobility to life-threatening complications. Case presentation: We present an extremely rare case of an 11-year old girl with Ehlers–Danlos syndrome and coexistence of multiple odontogenic keratocysts. Conclusions: This case shows mainly atypical or rare association between multiple odontogenic keratocysts and Ehlers–Danlos syndrome
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Any role of pik3ca and pten biomarkers in the prognosis in oral squamous cell carcinoma?
No full textOral squamous cell carcinoma (OSCC) accounts for 95% of the lesions in the oral cavity. Despite development in OSCC management, the outcome is still unsatisfactory. Identification of new therapies in OSCC is urgently needed. One objective of such treatment may be a signaling pathway of phosphatidylinositol 3-kinase. The study group included 92 patients treated for OSCC at the University Clinical Centre in Gdańsk, Poland. Study was performed on formalin-fixed paraffin-embedded samples from primary OSCC. Phosphatidylinositol-4,5-bisphosphate 3-kinase (PIK3CA) and phosphatase and tensin homolog encoded on chromosome 10 (PTEN) protein expression was assessed by immunohistochemistry (IHC). PIK3CA gene copy number was analyzed using chromogenic and silver in situ hybridization where molecular probes are marked by chromogens and silver ions. PIK3CA IHC H-score ≥ 70 was found in 51.65% patients, and loss of PTEN protein was noticed in 31.46% cases. PIK3CA amplification was detected in 5 tumors. In the case of PTEN protein expression, there was an inverse correlation with the T stage of the primary tumor (r = −0.243) and positive correlation with a 5-year survival (r = 0.235). The number of copies of the PIK3CA gene was associated with the tumor grading (r = 0.208). The present study shows that loss of PTEN protein and the grading (p = 0.040), distant metastases (p = 0.033), smoking (p = 0.016), and alcohol abuse (p = 0.042) were prognostic factors for the survival of patients with OSCC. In contrast, the presence of amplification and OSCC on the floor of the mouth resulted in a nearly six-fold increase in the risk of shortening survival (p = 0.037). Our finding suggests a potential prognostic significance of PTEN loss and PIK3CA amplification in OSCC. Future studies are needed to confirm our results
Oral surgery procedures in a patient with Hajdu-Cheney syndrome treated with denosumab - A rare case report
No full textBackground: Hajdu-Cheney syndrome (HCS) is a very rare autosomal-dominant congenital disease associated with mutations in the NOTCH2 gene. This disorder affects the connective tissue and is characterized by severe bone resorption. Hajdu-Cheney syndrome most frequently affects the head and feet bones (acroosteolysis). Case report: We present an extremely rare case of a 34-year-old male with Hajdu-Cheney syndrome. The patient was admitted to the Department of Oral Surgery, Medical University of Gdańsk, in order to perform the extraction of three teeth. These teeth were not eligible for conservative treatment and prosthetic reconstruction. The patient was treated with denosumab (angiogenesis and receptor activator of nuclear factor-κB RANK ligand inhibitor, RANKL). Discussion: Denosumab is a monoclonal antibody against RANKL. This drug works through a suppression of osteoclast activity. In cases of patients in which the pathway of the RANK/RANKL/osteoprotegerin is dysregulated, denosumab has been approved for the treatment off-label. In patients receiving denosumab, a delayed wound healing in the oral cavity and osteonecrosis may occur. Dental procedures involving the alveolar bone process (tooth extractions and bone alveoloplasty) may be a risk factor for medication-related osteonecrosis of the jaw (MRONJ). Spontaneous osteonecrosis is rarely observed. MRONJ consists of the destruction of exposed bone, with the exposure persisting for a minimum of 6–8 weeks. This is the first article about an HCS patient treated with denosumab who underwent invasive oral surgery procedures. This case report highlights the difficulties for professionals occurring during the oral surgery procedures in such patients
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
- …
