bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of simultaneous placement of implant and block bone graft substitute: an in vivo peri-implant defect model
Authors: Le Thieu Minh Khai , Homayouni Amin , Hæren Lena Ringsby , Tiainen Hanna , Verket Anders , Ellingsen Jan Eirik , Rønold Hans Jacob , Wohlfahrt Johan Caspar , Cantalapiedra Antonio Gonzalez , Muñoz Fernando Maria Guzon , Mendaña Maria Permuy , Lyngstadaas Ståle Petter , Haugen Håvard Jostein
Published: November 2021

Background

Insufficient bone volume around an implant is a common obstacle when dental implant treatment is considered. Limited vertical or horizontal bone dimensions may lead to exposed implant threads following placement or a gap between the bone and implant. This is often addressed by bone augmentation procedures prior to or at the time of implant placement. This study evaluated bone healing when a synthetic TiO
2
block scaffold was placed in circumferential peri-implant defects with buccal fenestrations.

Methods

The mandibular premolars were extracted and the alveolar bone left to heal for 4 weeks prior to implant placement in six minipigs. Two cylindrical defects were created in each hemi-mandible and were subsequent to implant placement allocated to treatment with either TiO
2
scaffold or sham in a split mouth design. After 12 weeks of healing time, the samples were harvested. Microcomputed tomography (MicroCT) was used to investigate defect fill and integrity of the block scaffold. Distances from implant to bone in vertical and horizontal directions, percentage of bone to implant contact and defect fill were analysed by histology.

Results

MicroCT analysis demonstrated no differences between the groups for defect fill. Three of twelve scaffolds were partly fractured. At the buccal sites, histomorphometric analysis demonstrated higher bone fraction, higher percentage bone to implant contact and shorter distance from implant top to bone 0.5 mm lateral to implant surface in sham group as compared to the TiO
2
group.

Conclusions

This study demonstrated less bone formation with the use of TiO
2
scaffold block in combination with implant placement in cylindrical defects with buccal bone fenestrations, as compared to sham sites.
Orthostatic intolerance syndromes after hematopoietic cell transplantation: clinical characteristics and therapeutic interventions in a single-center experience
Authors: Vecchié Alessandra , Thomas Georgia , Bressi Edoardo , Bonaventura Aldo , Canada Justin M. , Chuquin David , Kadariya Dinesh , Piracha Usman , Endicott Delia , Markley Roshanak , Toor Amir , Hess Michael , Abbate Antonio
Published: November 2021

Background

Hematopoietic cell transplantation (HCT) is an established and potentially curative therapeutic option for hematologic cancers. HCT survivors are at risk of developing long-term complications impacting on morbidity and mortality. Orthostatic hypotension (OH) and postural tachycardia syndrome (POTS) have been anecdotally described after HCT. However, the incidence and clinical characteristics of patients with OH and POTS after HCT has not been well defined.

Methods

This retrospective study included 132 patients who had HCT between March 2011 and July 2018 and were referred to Cardio-oncology clinic. Patients were screened for OH and POTS. Using logistic regression analysis we evaluated the association between clinical factors and the incidence of OH and POTS.

Results

Median age was 58 (47–63) years, 87 (66%) patients were male, 95 (72%) were Caucasian. OH was diagnosed in 30 (23%) subjects and POTS in 12 (9%) after the HCT. No significant differences in demographic characteristics were found when comparing patients with and without OH or POTS. The two groups did not differ for cardiovascular diseases prevalence nor for the prior use of antihypertensive drugs. Previous radiotherapy and treatment with specific chemotherapy drugs were found to be associated with the incidence of OH or POTS, but none of the factors maintained the significance in the multivariate model. Pharmacological therapy was required in 38 (91%) cases, including a b-adrenergic blocker (n = 24, 57%), midodrine (n = 24, 57%) and fludrocortisone (n = 7, 18%).

Conclusion

Orthostatic intolerance syndromes are commonly diagnosed in patients referred to the cardiologist after HCT, involving approximately 1/3 of patients and requiring pharmacological therapy to cope with symptoms in the majority of cases. Risk factors specific to this population are identified but cannot fully explain the incidence of POTS and OH after HCT.
Knowledge, perceptions, and clinical experience regarding Molar-Incisor Hypomineralization among a group of general dental practitioners, pediatric dentists, and other dental specialists in Egypt: a cross-sectional study
Authors: Yehia Alaa Mohammed , Abdelaziz Amr M. , Badran Amira
Published: November 2021

Background

Molar-Incisor Hypomineralization (MIH) is a prevalent clinical condition which is associated with a high burden of disease. The present study aimed to assess and compare the knowledge, perceptions, and clinical experience of general dental practitioners (GDPs), pediatric dentists (PDs), and other dental specialists (DSs) in Egypt about MIH.

Methods

Online and paper-based survey administration methods were used to collect the responses from Egyptian dentists regarding their knowledge, and perceptions about MIH. The survey tool focused on participants’ socio-demographics, clinical experience, perceptions, clinical management, and preferences for further training. The level of knowledge regarding MIH was compared among the three groups. Data analysis utilized Chi-square and one-way ANOVA followed by Tukey’s post hoc test using SPSS® Statistics Version 26.

Results

The majority of respondents had observed MIH in their practice (86%). The participants who had a postgraduate degree had a significantly higher knowledge score value (51.01 ± 5.74) than GDPs (43.05 ± 7.04) (p < 0.001). PDs (51.13 ± 4.76) had a significantly higher knowledge score value than other DSs (50.91 ± 6.46) (p < 0.001).

Conclusions

Dissemination of evidence on MIH to dental practitioners especially to GDPs is highly needed to assure confidence in MIH diagnosis at an early stage when it can be best managed.
TaqI polymorphism of the VDR gene: aspects related to the clinical behavior of COVID-19 in Cuban patients
Authors: Peralta Estela Morales , Rosales Yaíma Zúñiga , Mesa Teresa Collazo , González Elvia Nelmi Santos , Pérez Yadira Hernández , de los Ángeles González Torres María , Balbuena Hilda Roblejo , Teruel Beatriz Marcheco
Published: November 2021

Purpose

To determine the relationship between the genotypes of the TaqI polymorphism of VDR gene and the clinical forms of COVID-19 in Cuban patients.

Methods

TaqI polymorphism was determined by the PCR in 104 Cuban patients, who suffered different clinical forms of COVID-19.

Results

There was a greater possibility of presenting symptomatic forms [OR = 2.081, 95% CI: 0.243–17.842], even severe [OR = 1.200, 95% CI: 0.217–6.638], related to the tt genotype.

Conclusion

There are signs of association between the risk of developing COVID-19 and the genotypes of the TaqI polymorphism of the VDR gene in the studied Cuban patients.
Translation-dependent mRNA localization to Caenorhabditis elegans adherens junctions
Authors: Tocchini Cristina , Rohner Michèle , Guerard Laurent , Ray Poulomi , Von Stetina Stephen E. , Mango Susan E.
Published: November 2021

mRNA localization is an evolutionarily widespread phenomenon that can facilitate subcellular protein targeting. Extensive work has focused on mRNA targeting through ‘zip-codes’ within untranslated regions (UTRs), whereas much less is known about translation-dependent cues. Here, we examine mRNA localization in Caenorhabditis elegans embryonic epithelia. From an smFISH-based survey, we identified mRNAs associated with the cell membrane or cortex, and with apical junctions in a stage- and cell type-specific manner. Mutational analyses for one of these transcripts, dlg-1/discs large, revealed that it relied on a translation-dependent process and did not require its 5′ or 3′ UTRs. We suggest a model in which dlg-1 transcripts are co-translationally localized with the nascent protein: first the translating complex goes to the cell membrane using sequences located at the C-terminal/3′ end, and then apically using N-terminal/5′ sequences. These studies identify a translation-based process for mRNA localization within developing epithelia and determine the necessary cis-acting sequences for dlg-1 mRNA targeting.
Synthetic Difference-in-Differences
Authors: Arkhangelsky Dmitry , Athey Susan , Hirshberg David A. , Imbens Guido W. , Wager Stefan
Published: November 2021

We present a new estimator for causal effects with panel data that builds on insights behind the widely used difference-in-differences and synthetic control methods. Relative to these methods we find, both theoretically and empirically, that this “synthetic difference-in-differences” estimator has desirable robustness properties, and that it performs well in settings where the conventional estimators are commonly used in practice. We study the asymptotic behavior of the estimator when the systematic part of the outcome model includes latent unit factors interacted with latent time factors, and we present conditions for consistency and asymptotic normality. (JEL C23, H25, H71, I18, L66)
Sectoral Media Focus and Aggregate Fluctuations
Authors: Chahrour Ryan , Nimark Kristoffer , Pitschner Stefan
Published: November 2021

We formalize the editorial role of news media in a multisector economy and show that media can be an independent source of business cycle fluctuations, even when they report accurate information. Public reporting about a subset of sectoral developments that are newsworthy but unrepresentative causes firms across all sectors to hire too much or too little labor. We construct historical measures of US sectoral news coverage and use them to calibrate our model. Time-varying media focus generates demand-like fluctuations that are orthogonal to productivity, even in the absence of non-TFP shocks. Presented with historical sectoral productivity, the model reproduces the 2009 Great Recession. (JEL D22, D83, E32, L82)
Optimal Lockdown in a Commuting Network
Authors: Fajgelbaum Pablo D. , Khandelwal Amit , Kim Wookun , Mantovani Cristiano , Schaal Edouard
Published: November 2021

We study optimal dynamic lockdowns against COVID-19 within a commuting network. Our framework integrates canonical spatial epidemiology and trade models and is applied to cities with varying initial viral spread: Seoul, Daegu, and the New York City metropolitan area (NYM). Spatial lockdowns achieve substantially smaller income losses than uniform lockdowns. In the NYM and Daegu—with large initial shocks—the optimal lockdown restricts inflows to central districts before gradual relaxation, while in Seoul it imposes low temporal but large spatial variation. Actual commuting reductions were too weak in central locations in Daegu and the NYM and too strong across Seoul. (JEL H51, I12, I18, R23, R41)
Long-Term Effects of the Targeting the Ultra Poor Program
Authors: Banerjee Abhijit , Duflo Esther , Sharma Garima
Published: November 2021

This paper studies the long-run effects of a “ big-push” program providing a large asset transfer to the poorest Indian households. In a randomized controlled trial that follows these households over ten years, we find positive effects on consumption (0.6 SD), food security (0.1 SD), income (0.3 SD), and health (0.2 SD). These effects grow for the first seven years following the transfer and persist until year ten. One main channel for persistence is that treated households take better advantage of opportunities to diversify into more lucrative wage employment, especially through migration. (JEL I32, I38, J22, J31, O12, O18)
Language and politics in the world of the Hellenistic poleis
Authors: Βέλλιου Παναγιώτα
Published: November 2021

Οι αρχαίες ελληνικές πόλεις από την Αρχαϊκή περίοδο σχημάτισαν στη Μεσόγειο Θάλασσα δίκτυα, τα οποία τους επέτρεψαν να αλληλεπιδρούν και να ανταλλάσσουν ιδέες και πρακτικές σε κάθε τομέα της ανθρώπινης δραστηριότητας. Η διατριβή αυτή εξετάζει αυτές τις επαφές, συγκεκριμένα στο πεδίο της πολιτικής κατά τη διάρκεια της Ελληνιστικής περιόδου, όταν τα παλιά δίκτυα ενισχύθηκαν ακόμα περισσότερο μέσω της εξάπλωσης του ελληνικού πολιτισμού προς την Ανατολή. Εστιάζοντας στο επιγραφικό υλικό από την ηπειρωτική Ελλάδα και τα νησιά του Αιγαίου, και αντλώντας από τις σύγχρονες μεθόδους της γλωσσολογίας, η μελέτη ερευνά τόσο την κοινή, ευρέως διαδεδομένη δημοκρατική πολιτική κουλτούρα στην οποία συμμετείχαν όλες οι πόλεις-κράτη, όσο και τις υπάρχουσες τοπικές ιδιαιτερότητες σε γλωσσικό και θεσμικό επίπεδο. Αυτή η διερεύνηση υπογραμμίζει τη ζωτικότητα της δημοκρατίας στην Ελληνιστική εποχή, όταν οι πόλεις-κράτη εξακολουθούσαν να εισάγουν νέους και καινοτόμους θεσμούς, αλλά και την έμφαση που η κάθε πόλη έδινε στο να διεκδικεί μία ιδιαίτερη, τοπική ταυτότητα. Η γλώσσα έπαιζε ένα σημαντικό ρόλο στη δημιουργία τοπικών ταυτοτήτων, ιδιαίτερα όταν οι πόλεις αγωνίζονταν να διατηρήσουν τις προγονικές, τοπικές διαλέκτους και να παρεκκλίνουν από το κοινό, πολιτικό ιδίωμα που όλες χρησιμοποιούσαν στην άσκηση της πολιτικής.
Co-feeding of vacuum gas oil and pinewood-derived hydrogenated pyrolysis oils in a fluid catalytic cracking pilot plant to generate olefins and gasoline
Authors: Buechele Marco , Lutz Helene , Knaus Florian , Reichhold Alexander , Venderbosch Robbie , Vollnhofer Wolfgang
Published: November 2021

Background: The Waste2Road project exploits new sustainable pathways to generate biogenic fuels from waste materials, deploying existing industrial scale processes. One such pathway is through pyrolysis of wood wastes.

Methods: The hereby generated pyrolysis liquids were hydrogenated prior to co-feeding in a fluid catalytic cracking (FCC) pilot plant. So-called stabilized pyrolysis oil (SPO) underwent one mild hydrogenation step (max. 200 °C) whereas the stabilized and deoxygenated pyrolysis oil (SDPO) was produced in two steps, a mild one (maximum 250 °C) prior to a more severe process step (350 °C).

These liquids were co-fed with vacuum gas oil (VGO) in an FCC pilot plant under varying riser temperatures (530 and 550 °C). The results of the produced hydrocarbon gases and gasoline were benchmarked to feeding pure VGO.

Results: It was proven that co-feeding up to 10 wt% SPO and SDPO is feasible. However, further experiments are recommended for SPO due to operational instabilities originating from pipe clogging. SPO led to an increase in the hydrocarbon gas production from 45.0 to 46.3 wt% at 550 °C and no significant changes at 530 °C. SDPO led to a rise in gasoline yield at both riser temperatures. The highest amount of gasoline was produced when SDPO was co-fed at a 530 °C riser temperature, with values around 44.8 wt%. Co-feeding hydrogenated pyrolysis oils did not lead to a rise in sulfur content in the gasoline fractions. The highest values were around 18 ppm sulfur content. Instead, higher amounts of nitrogen were observed in the gasoline.

Conclusions: SPO and SDPO proved to be valuable co-refining options which led to no significant decreases in product quality. Further experiments are encouraged to determine the maximum possible co-feeding rates. As a first step, 20-30 wt% for SPO are recommended, whereas for SDPO  100 wt% could be achievable.
THE CURRENT SITUATION AND DEVELOPMENT OF CHINESE MYTHOLOGICAL ANIMATED FILMS IN THE CONTEXT OF NATIONAL CULTURAL REVIVAL
Authors: XU XIN
Published: November 2021

Abstract. In the context of national cultural confidence mythological animated films have become an important issue in animated film types. Put the three films “Monkey King Hero is Back”, “White Snake”, and “Ne Zha: I am destiny “into the status and development of domestic animated mythology films. It is necessary to deal with IP images in artistic films, innovative mythological subjects, constructing new stories, and audiences of all ages. Therefore, we must start with tell good stories, enlightening values, expanding overseas communication, and so on, so as to improve animation creation and domestic and foreign influence.
EVALUATION INDEXES OF HEALTH LITERACY OF COLLEGE STUDENTS IN YUNNAN
Authors: HE CHAOHU , HU WENWU , ZHOU MING
Published: November 2021

Abstract. This paper used Delphi method to select 11 experts in Yunnan and conducted aquestionnaire survey on the evaluation indicators of college students' health literacy. The average ageof the experts is 38.52 years old, and the average professional years are (11.32±1.33) years. 63.64%of the experts have master's degree or above. The recovery rate of the two rounds of consultationtables was more than 80.0%, and the coefficient of authority of experts was 0.81. After 2 rounds ofconsultation, the coordination coefficient of experts was 0.173, and the difference was statisticallysignificant (P<0.01). The selection of experts meets the requirements, the enthusiasm is high, and thedegree of authority, the concentration and coordination of opinions are good. According to the screening criteria, 59 indicators were selected to evaluate the health literacy of college students in Yunnan. The selected indicators can better reflect the actual needs of college students in Yunnan and meet the needs of constructing the evaluation index system of college students' health literacy in Yunnan
ON CULTIVATING LANGUAGE SERVICE TALENTS IN HIGHER VOCATIONAL COLLEGES UNDER THE BACKGROUND OF “ONE BELT AND ONE ROAD” CONSTRUCTION
Authors: SUN KAILAI
Published: November 2021

Abstract. In the context of “One Belt and One road “construction, there is an urgent need for compound language service talents. Higher vocational colleges should take this precious opportunity to cultivate qualified language service talents by solving currently existing problems and reforming the language service talents cultivating modes. In this paper, all efforts went into exploring an reform of the language service talents cultivating modes in higher vocational colleges by focusing on adjusting talents cultivating goals, course adjustment and diversifying the forms of practice
URBAN COMMUNITY RADIO AND GOVERNMENT INFORMATION MANAGEMENT & SOCIAL GOVERNANCE IN CHINA
Authors: CHEN HUIYING
Published: November 2021

Abstract. This article mainly observes the communication characteristics and development trends of urban Community radio participating in Chinese government Information management and social governance. Through case observation method, it aims at the development of urban Community radio Issues and predicaments, and propose perfect strategies from team, technology and system construction to further stimulate the vitality of social broadcasting to participate in government Information management and grassroots social governance.
THE RELATIONSHIP BETWEEN HIGHER EDUCATION AND REGIONAL INDUSTRIES DEVELOPMENT IN NINGBO
Authors: SHENG QIJIE
Published: November 2021

Abstract. This study investigated the association between higher education and regional industry in Ningbo through the perspective of discipline setting. For the analysis of this association, this paper used the supply of colleges and the need of industrial cluster as the key indicators. A special method which can show the industry relevance was used for discipline classification from 14 colleges. The findings showed that the association between higher education and regional industry perform not well. More specifically, the quality and quantity of students supply by colleges was insufficient. The results provide valuable implications for Ningbo to improve the development of colleges.
EXPLORATION ON EFFECTIVE WAYS OF CHINESE SPIRITUAL EDUCATION IN HIGHER VOCATIONAL COLLEGES
Authors: WANG DENGHONG , GUO HUIFANG
Published: November 2021

Abstract. In order to respond to the call of the state, higher vocational colleges must adapt to the actual needs of the society to achieve effective improvement of education, and at present, for the cultivation of contemporary students, it is necessary to realize the effective implementation of China's spiritual education, so as to ensure that the development of contemporary students can be based on the concept, quality, ability and ability of China's needs Faith to meet the needs of society for talents. At the same time, in view of the current higher vocational colleges, in the development of basic education, we should also realize the effective integration of quality education and vocational education, so as to ensure that in the development of basic education, we can realize the comprehensive training of talents, and then we can fit the actual needs of the society. In this regard, this paper mainly analyzes the effective ways to carry out China's spiritual education in higher vocational colleges.
THE REFORM PATH OF EMPLOYMENT GUIDANCE COURSE FOR HIGHER VOCATIONAL COLLEGE STUDENTS IN THE POST EPIDEMIC ERA
Authors: GUO HUIFANG , WANG DENGHONG
Published: November 2021

Abstract. In recent years, the number of graduates of higher vocational colleges is increasing year by year, and the employment pressure is rising. In 2020, due novel coronavirus pneumonia and the global turbulence economy, China's employment situation is facing severe test. With the enrollment expansion of “from junior college to undergraduate” and a series of employment assistance policies, the graduation direction and employment situation of higher vocational college students are also changing with the times. Employment guidance course is a compulsory course for graduates in higher vocational colleges. The current situation of employment guidance course in higher vocational colleges, the innovation of teaching mode, the establishment of a new connection between employment guidance course and the employment development of higher vocational college students, the search for reform ways and implementation countermeasures are of great significance to solve the employment problem of college students and relieve the employment pressure in the post epidemic era.
ANALYSIS OF RURAL REVITALIZATION PATHS BASED ON THE MULTI-FUNCTIONAL EVALUATION: A CASE STUDY OF 101 TOWNS IN LIAOCHENG, CHINA
Authors: GUO YIJIA , WEI YI
Published: November 2021

Abstract. The objective assessment of rural multi-functionality is the key to formulating rural development strategies. This paper constructs a rural multi-functional evaluation index system to evaluate the multi-functional values of production, life and ecology of 101 towns in Liaocheng City, Shandong Province. Based on survey data, multi-source spatial data and statistical data, draw a radar map of the multi-functional development model of the town. The results show that: (1) There are significant differences in the multi-functional development of 101 towns in Liaocheng. According to the average value, the order is ecological function (0.3755)>life function (0.2418)>production function (0.1556). Rural areas generally lag behind in terms of production function. (2) Ecological high-value areas are relatively evenly distributed in all districts and counties. High-value production areas are mainly located around Dongchangfu District. High-value areas for living functions are mainly located around the central urban areas of Dong'e County, Chiping District and Dongchangfu District. (3) It can be divided into three types: balanced, compound and dominant. Among the subdivision models, there is still no high-equilibrium model with a higher degree of development. Low-equilibrium and traditional townships account for 52% of the total evaluation objects. According to the evaluation and classification results, the article analyzes the influence of central city radiation effect, economic foundation, cultural atmosphere, etc. on rural multi-functionality. Combining the practice of agricultural land reform and rural asset activation, the article discusses the multi-functional development path of different types of rural development, which provides scientific advice for promoting rural transformation and development and promoting rural revitalization.
THE CASUAL GAMES DISCUSSION: DEFINE, DESIGN, PLAYERS AND BENEFITS
Authors: SUN KEYING , LI JIAQI
Published: November 2021

Abstract. In recent years, the market for casual games has been expanding, and so has the number of players. Many researchers have studied casual games in different aspects. This paper summarizes the articles and studies of scholars, and attempts to discuss the definition of casual games, the design emphasis of casual games, the basic attributes of casual game players, and the physical and psychological benefits of playing casual games.
RESEARCH ON THE RETRIEVAL SYSTEM OF THE REPUBLIC OF CHINA TEXTBOOKS
Authors: TIAN YUCHEN , WANG WENJU , ZHOU CHENMING , JIANG ZHONGMIN , JIN SHUYANG
Published: November 2021

Abstract. In order to help people better understand the culture of the Republic of China (ROC), experience the cultural connotation of ROC, and facilitate the research by researchers and the inheritance of ROC culture, this article proposes a ROC textbook retrieval system. The system is mainly divided into four modules: login and registration, book retrieval, online reading, and document downloading. We summarized and classified existing ROC textbooks, and converted them into electronic materials by scanning to build a database of ROC textbooks. According to the characteristics of textbooks, a fast retrieval algorithm is proposed to provide users with book search, online reading and other functions on the client interface, enabling users to search and read ROC textbooks online at all times and places through electronic devices, accumulating cultural literacy. Users can also download books and documents according to their own needs.
RESEARCH ON THE RELEVANCE AND SPATIAL SPILLOVER EFFECTS OF ENVIRONMENTAL POLLUTION, FINANCIAL DEVELOPMENT AND ECONOMIC GROWTH IN CHINA
Authors: PAN HAIFENG , ZHANG DINGSHENG
Published: November 2021

Abstract. Comprehensively considering the factors of environmental pollution, financial development and spillover effects, this paper analyzes the spatial dependence and clustering characteristics by selecting provincial panel data from 2005 to 2018. Meanwhile, considering geographic distance, economic distance and asymmetric factors, the optimal spatial econometric models are determined by constructing five different weight matrices and utilizing spatial panel models. The results show that (1) there existed significant positive correlation in the regional economic development and the spatial dependence played a significant role in promoting the economic development; (2) the direction and significance of spatial spillover effects were consistent under different spatial weights, and the spatial weight which considered geographical distance, economic distance and asymmetric factors proved to be the best; (3) the environmental pollution had a significant positive correlation with economic growth; (4) financial development had some positive effects on economic growth; (5) financial development was conducive to reducing the impact of environmental pollution on economic growth, and the promotion of environmental quality could strengthen the role of financial development in promoting economic growth; (6) from the perspective of regional heterogeneity, the cross terms of environmental pollution and financial development were not significant in the eastern region, but significantly negative in the central and western regions.
DOES JOINING A FARMER'S PROFESSIONAL COOPERATIVE INCREASE THE WELFARE OF FARMERS?—BASED ON THE EVIDENCE OF FARMERS IN SOUTHWEST CHINA
Authors: WANG HUCHENG , YANG WEILIN
Published: November 2021

Abstract. Based on field survey data of 1448 households in 50 villages in Q area, this paper uses the endogenous transformation regression model (ESRM) to analyze the impact of farmers joining professional cooperatives on family welfare under counterfactual scenarios, and further examines its mechanism of action. The study found that: (1) Farmers’ participation in professional cooperatives produces spillover effects and promotes the increase of farmers’ welfare; (2) The welfare effects of joining farmers’ professional cooperatives are also related to the differences in the farmers’ own family endowments, with higher family knowledge and cultural levels and more labor, Farmers with a large number of migrant workers have higher welfare effects of participating in cooperatives, otherwise the welfare effects will be lower; (3) The number of patients in farm households, the number of farmers, the size of the family, the number of elderly people, whether to borrow money, education level, etc. Factors have a significant role in promoting the participation of farmers in the decision-making of farmers' professional cooperatives, while factors such as the number of laborers, the number of workers, and age have a significant inhibitory effect on farmers' participation in the decision-making of farmers' professional cooperatives; (4) The increase in the number of workers, the number of farmers and the decline in the number of laborers indicate The efficiency of cooperatives in this area is low, and there are unnecessary losses; therefore, farmers should be encouraged to participate in cooperative operations.
THE IMPACT OF INVESTOR SENTIMENT ON THE RETURN OF STOCKS—EMPIRICAL ANALYSIS BASED ON THE DCC-GARCH MODEL
Authors: XIE RUOTING
Published: November 2021

Abstract. With the gradual inapplicability of the “rational man” and the efficient market hypothesis in the contemporary financial field, modern finance represented by behavioral finance has emerged. Behavioral finance is guided by the study of human psychology and behavior, exploring the internal connections and fluctuations in the financial market. Investor sentiment is often regarded as the most effective data reflected from a human perspective. Therefore, this article selects the monthly data of CICSI Investor Sentiment Index, Shenzhen Component Index, and Shanghai Composite Index logarithmic rate of return from February 2003 to December 2017, and establishes a DCCGARCH model for dynamic correlation analysis as an empirical study Basis, and draw conclusions. After research, it is found that there is a very obvious relationship between the investor sentiment index and the logarithmic return rate of the Chinese main board market. Particularly during periods of high investor sentiment, the negative correlation presented is more significant. Finally, based on the results of the research, this article makes recommendations for behavioral finance research, policy and regulation formulation, financial supervision and investors.
A STUDY INTO THE CURRENT SITUATION AND COUNTERMEASURES OF TPACK FOR PRIMARY SCHOOL MATHEMATICS TEACHERS IN INNER MONGOLIA
Authors: YUAN XIULI , JIA HONGRU
Published: November 2021

Abstract. Technological Pedagogical Content Knowledge (TPACK) is a new type of teacher knowledge framework, a new definition of the structure of teachers' professional knowledge in the information age, and an important indicator for evaluating teachers' information teaching ability in the information age. This paper first introduces the design of the TPACK questionnaire; then conducts a statistical analysis of the data after the survey (the basic situation of the primary school mathematics teacher in Inner Mongolia and the analysis of the status quo of the teacher TPACK). Based on the existing problems of primary school mathematics teachers TPACK in Inner Mongolia, this article puts forward the countermeasures to promote the development of teachers’ TPACK by improving teachers’ “subject education technology ability” and practicing multiple action paths systematically.
MEASUREMENT OF INNOVATION EFFICIENCY OF SEIS CONSIDERING UNEXPECTED OUTPUT
Authors: LUO DONG
Published: November 2021

Abstract. Green innovation development of strategic emerging industries (SEIs) is very important. Firstly, an SBM model considering unexpected output is constructed to measure the innovation efficiency of China's SEIs considering environmental pollution from 2009 to 2015, and compares it with the traditional DEA efficiency measurement results. Then, from the perspective of industry heterogeneity, the innovation efficiency of different industries considering unexpected output is analyzed in depth. The results show that: the value of innovation efficiency calculated by SBM model with unexpected output is more in line with the actual situation, and the development of SEIs has the problems of environmental pollution and high energy consumption. The heterogeneity of efficiency value industry is obvious, and the efficiency value of automobile manufacturing industry, instrument manufacturing industry and computer, communication and other electronic equipment manufacturing industry is higher than other industries. The results can provide reference for the correct understanding of the innovation and development of SEIs, and for relevant departments to formulate differentiated green innovation development policies for different industries.
AN EMPIRICAL STUDY ON THE LOGISTICS RISK OF CROSS-BORDER ONLINE SHOPPING FROM THE PERSPECTIVE OF CONSUMERS’ PERCEPTION
Authors: QIAO PENGLIANG , ZHAN JINGANG
Published: November 2021

Abstract. In order to study the degree of consumers' perception of logistics risk in the process of cross-border online shopping, based on the theory of consumer perception, a four-variable Structural Equation Model was built to carry out the research. The way of collecting data mainly applied internet survey questionnaire and analyzing data in the software SPSS 18.0 and AMOS 24.0. Results showed that: (1) Consumers' perception of logistics information risk will affect their perception of risk of goods clearance and delivery;(2) The risk of customs clearance has a complete mediation effect in information risk and logistics market risk, and will significantly affect the whole logistics market risk; (3) Consumers think that the risk of informatization level and distribution in the regional scope will not affect the risk of the whole logistics market
Extending Digital Ventures Through Templating
Authors: Huang Jimmy , Henfridsson Ola , Liu Martin J.
Published: November 2021

A powerful way of growing digital ventures is templating. Templating involves the generation and use of generic solutions across business areas to reduce cost and increase speed. There are three main processes with which ventures can improve templating: concepting, generalizing, and porting. This paper describes these processes and proposes implications for managers engaged in growing their digital venture.
Testing the Role of Contextual Deliberation in the Compromise Effect
Authors: Guo Liang
Published: November 2021

Many phenomena of preference construction demonstrate a violation of the rationality premise in classical economic theories. One of the most well-known examples of preference construction is the compromise effect. This puzzling anomaly can be rationalized by contextual deliberation (i.e., endogenous information retrieval/acquisition that can partially resolve utility uncertainty before choice). In this research, we investigate the empirical validity of this explanation by performing falsification tests for its necessary predictions and identifying it from other potential accounts. We conduct five experiments with more than 1,000 participants and show that the compromise effect can be positively mediated by response time and cannot be eliminated by context information, but it can be moderated by manipulating the level of deliberation (i.e., time constraint, preference articulation, task order). These findings are consistent with the predictions of the theory of contextual deliberation. We also show that, on average, contextual deliberation (as proxied by response time) can uniquely account for about half of the total compromise effect.

This paper was accepted by Yan Chen, behavioral economics and decision analysis.
Optimal Retirement Under Partial Information
Authors: Chen Kexin , Jeon Junkee , Wong Hoi Ying
Published: November 2021

The optimal retirement decision is an optimal stopping problem when retirement is irreversible. We investigate the optimal consumption, investment, and retirement decisions when the mean return of a risky asset is unobservable and is estimated by filtering from historical prices. To ensure nonnegativity of the consumption rate and the borrowing constraints on the wealth process of the representative agent, we conduct our analysis using a duality approach. We link the dual problem to American option pricing with stochastic volatility and prove that the duality gap is closed. We then apply our theory to a hidden Markov model for regime-switching mean return with Bayesian learning. We fully characterize the existence and uniqueness of variational inequality in the dual optimal stopping problem, as well as the free boundary of the problem. An asymptotic closed-form solution is derived for optimal retirement timing by small-scale perturbation. We discuss the potential applications of the results to other partial-information settings.
In the Land of the Blind, the One-Eyed Man Is King: Knowledge Brokerage in the Age of Learning Algorithms
Authors: Waardenburg Lauren , Huysman Marleen , Sergeeva Anastasia V.
Published: November 2021

This paper presents research on how knowledge brokers attempt to translate opaque algorithmic predictions. The research is based on a 31-month ethnographic study of the implementation of a learning algorithm by the Dutch police to predict the occurrence of crime incidents and offers one of the first empirical accounts of algorithmic brokers. We studied a group of intelligence officers, who were tasked with brokering between a machine learning community and a user community by translating the outcomes of the learning algorithm to police management. We found that, as knowledge brokers, they performed different translation practices over time and enacted increasingly influential brokerage roles, namely, those of messenger, interpreter, and curator. Triggered by an impassable knowledge boundary yielded by the black-boxed machine learning, the brokers eventually acted like “kings in the land of the blind” and substituted the algorithmic predictions with their own judgments. By emphasizing the dynamic and influential nature of algorithmic brokerage work, we contribute to the literature on knowledge brokerage and translation in the age of learning algorithms.
الخبرات الصادمة واضطراب المسلك لدى الأطفال المدمرة بيوتهم بالمناطق الحدودية في شرق محافظة خانيونس // Traumatic Experiences and Conduct Disorder among Children from
Destroyed Homes in the Border Areas East of Khan Younis Governorate
Authors: يحيى النجار  , عطاف أبو غالي
Published: November 2021

هدفت الدراسة التعرف إلى درجة التعرض للخبرات الصادمة، وأكثرها شيوعأ لدى الأطفال الفلسطينيين المدمرة بيوتهم في المناطق الحدودية، وكذلك التعرف إلى درجة انشار اضطراب المسلك لديهم،
والكشف عن الفروق في درجة التعرض للخبرات الصادمة ودرجة انشار اضطراب المسلك تبغا لمتفير النوع الاجتماعي. ولتحقيق أهداف الدراسة طبق مقياس الخبرات الصادمة على عينة عشوائية قوامها (٠٠
٢) طغل وطفلة من الأطفال المدمرة بيوتهم، بينما طبق مقياس اضطراب المسلك على عينة عشوائية بلغت (.٢٠) من قبل الوالدين، وأظهرت نتائج الدراسة أن درجة التعرض للخبرات الصادمة الشديدة
بلغت(٢٦,٥./) والمتوسطة(١ ZV) ، والخفيفة(٢,٥./) ، كما كشغت النتائج أن أكثر الخبرات الصادمة شيوعا لدى الأطفال كانت: سماع دوي الطائرات بشكل مخيف بمتوسط حسابي بلغ (٧٥٥,.)، تلاها تدمير
بيتي تدميرأ كليا أو جزئيا بمتوسط حسابي بلغ (٧٢,.) ، تلاها إخلاء البيت والهروب منه تحت القصف بمتوسط حسابي بلغ (٧٠,.) كما بلغت نسبة انشار اضطراب المسلك (Ζ٥,٥) وفقأ لتقديرات الوالدين.
كما أظهرت النتائج وجود فروق في درجة تعرض الخبرات الصادمة تبغا لمتفير النوع الاجتماعي لصالح الذكور بينما لا توجد فروق بين الجنسين في نسبة انشار اضطراب المسلك
Microscale gratings patterned in perovskite films to promote the electron-optical conversion efficiency of perovskite light-emitting diodes
Authors: Li Guolong , Qin Jing , Wang Yunzheng , Wu Yinggang , Li Mengyao , Chen Jiamei
Published: November 2021

In this paper, we investigated an enhancement of luminance in a perovskite light-emitting diode (PeLED) by inserting periodic microscale gratings. Soft imprinting was employed to pattern the gratings onto the surface of perovskite film in the annealing process. It was found that the grain-refining effect deeply influenced the morphology and crystallinity of the perovskite film. The finite-element analysis was utilized to confirm the light extraction enhancement arising from the inserted microscale gratings. Additionally, the introduction of microscale gratings led to a 1.33 enhancement of the device’s optoelectrical field intensity. Thus, the patterned PeLED obtained an enhancement of 2.96 and 2.1 of the luminance and external quantum efficiency, respectively.
Motion picture of magnified light pulse propagation with extending recordable time of digital light-in-flight holography
Authors: Inoue Tomoyoshi , Aoyama Takamasa , Sawashima Yu , Nishio Kenzo , Kubota Toshihiro , Awatsuji Yasuhiro
Published: November 2021

We experimentally demonstrate a motion picture imaging technique that can record a magnified image of light pulse propagation with extending the recordable time of digital light-in-flight recording by holography. We constructed an optical system that achieves a recordable time extension and an observation of a magnified image of light pulse propagation. As a result, we experimentally succeeded in recording light pulse propagation with a 7.45 magnification rate with extending the recordable time. The recordable time of the motion picture was 714 fs, which is twice that of the conventional one.
Hyperfine optical vector analysis of ultra- narrowband optical bandpass filters based on coherent two-tone sweeping and fixed low-frequency detection
Authors: Zhang Yaowen , Zhang Yujia , Yuan Fei , Zhang Zhiyao , Zhang Shangjian , Li Heping , Liu Yong
Published: November 2021

A hyperfine optical vector analyzer (OVNA) is proposed and experimentally demonstrated to characterize ultra-narrowband optical bandpass filters (OBPFs). In this scheme, a coherent two-tone optical signal (TTOS) with a small frequency interval is generated to act as a probe light. Through finely sweeping the TTOS across the passband of the OBPF via electro-optic modulation, the magnitude and phase responses of the OBPF under test can be measured with a high signal-to-noise ratio based on fixed low-frequency detection. The frequency response measurement is immune to external disturbance. In the experiment, the magnitude and group delay responses of a fiber-based Fabry-Perot tunable filter (FFP-TF) and a fiber-based Fabry-Perot interferometer (FFP-I) with 3-dB bandwidths of 1.5 GHz and 60 MHz, respectively, are successfully measured. In addition, the measurement uncertainty is theoretically and experimentally analyzed. This method paves a way to characterize ultra-narrowband OBPFs with high out-of-band rejection ratios.
Terahertz polarizer based on tunable surface plasmon in graphene nanoribbon
Authors: Sarker Dip , Nakti Partha Pratim , Tahmid Md Ishfak , Mamun Md Asaduz Zaman , Zubair Ahmed
Published: November 2021

Tunable surface plasmon resonance-based graphene nanoribbon (GNR) terahertz (THz) polarizers with adjustable operating frequency are proposed in this work. While conventional THz polarizers lack robustness and tunability, recently reported graphene-based metastructure polarizers have complex fabrication processes and comparatively smaller extinction ratios (ERs). A comprehensive study using finite-difference time-domain (FDTD) simulation technique reveals high ER, broad tunability, near-perfect degree of polarization (DOP), and low insertion loss for our proposed single and double stage GNR polarizers. The operating frequency of these narrow band polarizers can be tuned by varying GNR width, GNR pitch, chemical potential, and substrate material. Our optimized THz polarizer has an ER of 30 dB which is comparable to the commercially available THz polarizers. The maximum insertion losses within the tunable frequency range were found to be 0.24 dB and 1.87 dB for single and double stage GNR polarizers, respectively, which are substantially low. We compared the performance of the proposed structures with recently demonstrated graphene-based metastructure polarizers. The polarizers are promising for the design of photonic devices, integrated photonic circuits, and optoelectronic systems.
Nano-porous GaN cladding and scattering loss in edge emitting laser diodes
Authors: Anderson Ryan , Cohen Daniel , Zhang Haojun , Trageser Emily , Palmquist Nathan , Nakamura Shuji , DenBaars Steven
Published: November 2021

We report continuous wave operation of electrically injected InGaN laser diodes using nano-porous GaN n-side cladding with 33% porosity. At 454 nm emission wavelength, the pulsed injection slope efficiency is 0.24 W/A with a high loss of 82 cm-1. The considerable 60 cm-1 of excess loss of the nano-porous clad lasers is attributed to scattering at pores in unintentionally 3% porosified layers, supported by numerical modeling. Simulations comparing porous GaN cladding to AlInN cladding for lasers operating at 589 nm indicate that the porous cladding provides similar internal loss and lower thermal impedance.
Gold nanodoughnut as an outstanding nanoheater for photothermal applications
Authors: González-Colsa Javier , Serrera Guillermo , Saiz José María , Ortiz Dolores , González Francisco , Bresme Fernando , Moreno Fernando , Albella Pablo
Published: November 2021

Photoinduced hyperthermia is a cancer therapy technique that induces death to cancerous cells via heat generated by plasmonic nanoparticles. While previous studies have shown that some nanoparticles can be effective at killing cancer cells under certain conditions, there is still a necessity (or the need) to improve its heating efficiency. In this work, we perform a detailed theoretical study comparing the thermoplasmonic response of the most effective nanoparticle geometries up to now with a doughnut-shaped nanoparticle. We numerically demonstrate that the latter exhibits a superior tunable photothermal response in practical illumination conditions (unpolarized light). Furthermore, we show that nanoparticle heating in fluidic environments, i.e., nanoparticles undergoing Brownian rotations, strongly depends on the particle orientation with respect to the illumination source. We conclude that nanodoughnuts are the best nanoheaters in our set of structures, with an average temperature increment 40% higher than the second best nanoheater (nanodisk). Furthermore, nanodoughnuts feature a weak dependence on orientation, being therefore ideal candidates for photothermal therapy applications. Finally, we present a designing guide, covering a wide range of toroid designs, which can help on its experimental implementation.
Optomechanically induced grating
Authors: Abbas Muqaddar , Asadpour Seyyed Hossein , Hamedi Hamid R. , Ziauddin
Published: November 2021

We suggest a flexible control of the diffraction grating by considering an optomechanical cavity system. The cavity is driven by an external control standing wave and realizes the characteristics of the diffraction grating when the light beam interacts with the cavity, a phenomenon which we name optomechanically induced grating (OMIG). A standing wave consists of nodes and antinodes that lead to gratings or slits in the cavity system. The reflected probe field from a moving mirror is diffracted through a standing wave and comes out through a partially reflected mirror. Effective control of the diffraction grating is achieved with the manipulation of the optomechanical strength g
mc
( the so-called mirror-light interaction strength). Fascinatingly, the first, second, and third-order diffraction gratings can be easily achieved via the mirror-light interaction strength g
mc
. The diffraction grating is found to be influenced by the cavity decay rate. For small values of the decay rate, the diffraction grating becomes maximum and vice versa. The results of our model can bring potential applications in optomechanical systems.