bluuebunny/crossref_metadata_2025 huggingface dataset:
Transmission Network Loss Reduction and Voltage Profile Improvement Using Network Restructuring and Optimal DG Placement
Authors: Kumar Pramod , Swarnkar Nagendra Kumar , Ali Ahmed , Mahela Om Prakash , Khan Baseem , Anand Divya , Brito Ballester Julien
Published: January 2023

This paper introduced a method using hybrid combination of network restructuring and optimal placement of optimally sized distributed generators (DG) to reduce loss and improve voltage profile in a practical transmission network for scenario of high load demand for a period of ten years. A study is performed for four study cases which includes the test transmission network without considering optimal DG placement and network restructuring, considering network restructuring, optimal placement of DG units using proposed grid parameter oriented harmony search algorithm (GPOHSA) and considering hybrid combination of network restructuring and DG placement using GPOHSA. Network restructuring is achieved by addition of a new 400 kV Grid-substation (GSS) and a 220 kV GSS along with associated transmission system. GPOHSA is obtained by a modification in the conventional harmony search algorithm (HSA) where grid coordinates are used for locating the individuals in an objective space. Performance Improvement Indicators such as real power loss reduction indicator (SPLRI), reactive power loss reduction indicator (SQLRI) and summation of node voltage deviation reduction indicator (SNVDRI) are proposed to evaluate performance of each case of study. The period of investment return is assessed to evaluate the pay back period of the investments incurred in network restructuring and DG units. It is established that hybrid combination of network restructuring and DG units placement using GPOHSA is effective to meet the increased load demand for time period of ten years with reduced losses and improved voltage profile. Investment incurred on the network restructuring and DG units placement will be recovered in a time period of 4 years. Effectiveness of the GPOHSA is better relative to the conventional genetic algorithm (GA) for DG unit placement. The study is performed using the MATLAB software on a practical transmission network in India.
The Evaluation of Comprehensive Teaching and Research Efficiency and Its Key Influencing Factors Analysis of “Double First-Class” Universities in China
Authors: Li Hongwei , Ma Dongyang , Cui Wei , Tao Min , Zhang Jiahui
Published: January 2023

An evaluation index system is established in order to evaluate the comprehensive teaching and research efficiency of “Double First-Class” universities in China, using the Joint Data Envelopment Analysis method. The influence of the parameters in the model is analyzed and the algorithmic steps are given. The key factors of the system are identified by the Grey Correlation Analysis method. The comprehensive teaching and research efficiency of “Double First-Class” Universities in China in 2019 has thereby been calculated as an empirical study. The results show that: (1) It is effective and feasible to construct an evaluation method based on joint DEA, for the evaluation of comprehensive teaching and research efficiency of “Double First-Class” Universities in China. (2) The key factors are the number of cited papers, the annual budget, and the salaries of graduates. Based on those factors, suggestions have been put forward to improve their efficiency. (3) The comprehensive teaching and research efficiency of China’s “Double First-Class” Universities are high, and the comparison between research efficiency and teaching efficiency shows that 69.2% of the “Double First-Class” Universities have higher research efficiency than teaching efficiency. Most of those universities allocate a higher proportion of shared input to research.
Assessing the Effects of Flow, Social Interaction, and Engagement on Students’ Gamified Learning: A Mediation Analysis
Authors: Chung Chih-Hung , Pan Hui-Ling Wendy
Published: January 2023

The positive impact of gamification on student learning has been empirically asserted, and previous studies have identified engagement as crucial for the effects. However, what causal mechanisms render the gamification effects still needs further exploration. We incorporated psychological and social factors to examine how they affect students’ perceived learning through engagement in a mediation model. The flow antecedents (perceived challenge of gamification and skill) and social interaction (peer interaction and social influence) were indicators of psychological and social factors, respectively. A survey was conducted to collect data from 250 college students in Taiwan. The PLC-SEM results indicate that the effects of perceived challenge and peer interaction on student learning were mediated by engagement. In addition, the impact of students’ perceptions of their skills was partially mediated by engagement. Both engagement and social influence exerted a direct effect on student learning. Among the predictors, engagement was the most influential factor for students’ gamified learning and had the highest performance volume. Based on the results, we suggest advancing flow antecedents and social interaction to sustain students’ gamified learning.
Conceptual Design in Informal Metalworking Microenterprises of Tanzania
Authors: Opiyo Eliab , Jagtap Santosh , Keshwani Sonal
Published: January 2023

Product design is a key aspect of human intelligence and creativity, attracting not only experts but also people without any formal design training. Although numerous people in developing countries design and manufacture products in metalworking microenterprises in the informal sector, there is still little knowledge about their design process. This paper aims to fill this gap in design knowledge. We aim to investigate the design processes in metalworking microenterprises in the informal sector of Tanzania. In particular, we aim to explore how these microenterprises identify consumer needs and requirements, how they determine the specifications for the product, how they generate and evaluate alternative product concepts, and how they define product details. To address these aims, semistructured interviews were carried out in metalworking microenterprises operating in the informal sector of Tanzania. The findings reveal many facets of their design processes, providing a sound basis upon which design methods and tools can be developed to support their design activities.
State-of-the-Art Review of the Resilience of Urban Bridge Networks
Authors: Wang Tong , Liu Yang , Li Qiyuan , Du Peng , Zheng Xiaogong , Gao Qingfei
Published: January 2023

With the rapid advancement of the urbanization process, the bridge networks in cities are becoming increasingly optimized, playing an important role in ensuring the normal operation of cities. However, with the gradual deterioration of bridges and the further attenuation of their capacity, many bridges are prone to damage or even collapse under extreme loads. After a natural disaster or human-derived accident occurs in a city, the normal operation of the bridge network in the city will play an irreplaceable role in emergency rescue and long-term recovery after the disaster. In this paper, the resilience of urban bridge networks, as a comprehensive indicator that integrates predisaster early warning, disaster response and postdisaster recovery information, is considered. This indicator has been applied in many disciplines, such as civil engineering, sociology, management and economics. The concept of resilience is expounded, and functional and resilience assessment indicators for bridge networks are established. Additionally, the research progress on bridge network resilience is described. Finally, combined with research hotspots such as big data, artificial intelligence and bridge structural health monitoring, the development trends and prospects of bridge network resilience research are discussed.
Implication of Lightweight and Robust Hash Function to Support Key Exchange in Health Sensor Networks
Authors: Al-Zubaidie Mishall
Published: January 2023

Internet of Things (IoT) applications are critical for the fast delivery of health information/data in different environments. The wireless sensor network (WSN) can be used within IoT applications to collect this information in the electronic-health sector. However, the essential drawback of WSN and health applications is ensuring that patient and healthcare provider data/information is protected. In addition, exchanging keys and joining the network is the first/most important line of defense to protect health information. Amid all this, the previous search has introduced many key exchange protocols but still suffers from security and performance issues for WSNs and user devices. In this research, we propose a new protocol for exchanging keys and joining the network using security algorithms that are Elliptic-curve Diffie–Hellman (ECDH) and QUARK hash (qh). We focused on applying lightweight and high-security techniques to reduce the burden on WSN resources, by adopting a solid methodological approach to support security first and performance second. The security analysis is simulated with the Scyther tool, and the results indicate that our protocol is able to block key exchange attacks known in the existing research. Furthermore, we carried out a comparison with the results of the recent search in terms of performance, our protocol provides better performance results than the results of the existing search.
Mechanical and Histological Characteristics of Human Tubular Bones after Hyperthermal Treatment
Authors: Pakhmurin Denis , Pakhmurina Viktoriya , Kashin Alexander , Kulkov Alexey , Khlusov Igor , Kostyuchenko Evgeny , Anisenya Ilya , Sitnikov Pavel , Porokhova Ekaterina
Published: January 2023

This research focused on studying regularities in changes in strength characteristics and histological patterns of healthy tubular bone tissue depending on the temperature setting of hyperthermal treatment. Experimentation has established that heating the experimental bone sample in a temperature range of 60 to 70 °C does not cause any decline in strength characteristics compared to the control samples not subject to heat treatment. In compression tests (along the length of the bone), after heating the bone samples ex vivo to 80 °C, the strength characteristics were found to increase as the samples sustained a higher maximum stress. In bending tests, in contrast, the strength characteristics were reliably found to decrease in bone samples at 80 °C and 90 °C for the maximum stress indicator and 90 °C for the modulus of elasticity. Data obtained through histological examination further demonstrated statistically significant differences between the two temperature ranges of 60–70 °C and 80–90 °C, where semi-quantitative assessment revealed statistically significant differences in the markers of bone tissue destruction caused by hyperthermal treatment. Moderate (at 60–70 °C) and pronounced (at 80–90 °C) dystrophic and necrotic changes were observed both in the cells and the intercellular matrix of the tibia. From a practical point of view, the temperature range of 60–70 °C can be considered operational for thermal ablation since, at these temperatures, no statistically significant decline was observed for the strength characteristics in either the cross-section or length-section.
Adaptive Artificial Bee Colony Algorithm for Nature-Inspired Cyber Defense
Authors: Ganguli Chirag , Shandilya Shishir Kumar , Nehrey Maryna , Havryliuk Myroslav
Published: January 2023

With the significant growth of the cyber environment over recent years, defensive mechanisms against adversaries have become an important step in maintaining online safety. The adaptive defense mechanism is an evolving approach that, when combined with nature-inspired algorithms, allows users to effectively run a series of artificial intelligence-driven tests on their customized networks to detect normal and under attack behavior of the nodes or machines attached to the network. This includes a detailed analysis of the difference in the throughput, end-to-end delay, and packet delivery ratio of the nodes before and after an attack. In this paper, we compare the behavior and fitness of the nodes when nodes under a simulated attack are altered, aiding several nature-inspired cyber security-based adaptive defense mechanism approaches and achieving clear experimental results. The simulation results show the effectiveness of the fitness of the nodes and their differences through a specially crafted metric value defined using the network performance statistics and the actual throughput difference of the attacked node before and after the attack.
Might the 2PN Perihelion Precession of Mercury Become Measurable in the Next Future?
Authors: Iorio Lorenzo
Published: January 2023

The Hermean average perihelion rate ω˙2PN, calculated to the second post-Newtonian (2PN) order with the Gauss perturbing equations and the osculating Keplerian orbital elements, ranges from −18 to −4 microarcseconds per century μascty−1, depending on the true anomaly at epoch f0. It is the sum of four contributions: one of them is the direct consequence of the 2PN acceleration entering the equations of motion, while the other three are indirect effects of the 1PN component of the Sun’s gravitational field. An evaluation of the merely formal uncertainty of the experimental Mercury’s perihelion rate ω˙exp recently published by the present author, based on 51 years of radiotechnical data processed with the EPM2017 planetary ephemerides by the astronomers E.V. Pitjeva and N.P. Pitjev, is σω˙exp≃8μascty−1, corresponding to a relative accuracy of 2×10−7 for the combination 2+2γ−β/3 of the PPN parameters β and γ scaling the well known 1PN perihelion precession. In fact, the realistic uncertainty may be up to ≃10–50 times larger, despite reprocessing the now available raw data of the former MESSENGER mission with a recently improved solar corona model should ameliorate our knowledge of the Hermean orbit. The BepiColombo spacecraft, currently en route to Mercury, might reach a ≃10−7 accuracy level in constraining β and γ in an extended mission, despite ≃10−6 seems more likely according to most of the simulations currently available in the literature. Thus, it might be that in the not-too-distant future, it will be necessary to include the 2PN acceleration in the Solar System’s dynamics as well.
Anticipated Affect That Encourages or Discourages Human Papillomavirus Vaccination: A Scoping Review
Authors: Okuhara Tsuyoshi , Terada Marina , Kagawa Yumi , Okada Hiroko , Kiuchi Takahiro
Published: January 2023

We reviewed studies that examined the anticipated affects associated with human papillomavirus (HPV) vaccination to identify gaps in the literature and the currently available practice implications for encouraging HPV vaccination. We systematically searched MEDLINE, the Cumulative Index to Nursing and Allied Health Literature, PsycINFO, PsycArticles, Academic Search Complete, Scopus, and Web of Science to find English articles that quantitatively and qualitatively examined anticipated affects associated with HPV vaccination. A total of twenty-one studies were identified. Seventeen studies examined the anticipated inaction regret (i.e., not being vaccinated). Most of the included studies reported that anticipated inaction regret had a significantly positive association with HPV vaccination outcomes, such as vaccination behavior, intention, willingness, and acceptability. Furthermore, seven studies reported that anticipated inaction regret had a significantly positive and stronger association with vaccination outcomes than cognitive beliefs, such as vaccine effectiveness and safety, and perceived susceptibility and severity. The present review indicated that the stronger the participants’ anticipated inaction regret, the more likely they were to receive the HPV vaccine. Messages targeting the anticipated affect may be as effective as or more effective than messages targeting cognitive beliefs in encouraging HPV vaccination among people. However, most of the studies included in the present review adopted a cross-sectional design with vaccination intention and willingness as outcomes. Therefore, future studies should examine the influence of anticipated affects on the utilization of HPV vaccines using experimental designs to accumulate stronger evidence.
THE INFLUENCE OF INTRINSIC MOTIVATION AND ORGANIZATIONAL CULTURE ON EMPLOYEE PERFORMANCE AT PT. BANK RAKYAT INDONESIA (PERSERO), TBK DURI BRANCH THROUGH ORGANIZATIONAL COMMITMENT
Authors: Choudry Adiyatul , Indarti Sri , Setiawan Deny
Published: January 2023

The research was conducted at PT. Bank Rakyat Indonesia (Persero), Tbk, Duri Branch. The purpose of this study was to determine the effect of intrinsic motivation on organizational culture on employee performance mediated by organizational commitment variables. The population in this study were all employees of PT. Bank Rakyat Indonesia (Persero), Tbk, Duri Branch. This study took a sample of 124 employee respondents with the sampling technique used was disproportionate stratified random sampling. The data collection technique used is through a questionnaire. The data analysis technique used is path analysis technique. The data were analyzed using SEM (Structural Equation Modeling) analysis which was operated through the WarpPLS 7.0 program. through organizational commitment,
ANALYSIS OF FACTORS AFFECTING SUSTAINABLE COMPETITIVE ADVANTAGE OF SMEs DURING THE COVID-19 PANDEMIC IN PEMATANGSIANTAR CITY
Authors: Sinaga Onita Sari , Candra Vivi , Inrawan Ady , Simatupang Sudung , Sudirman Acai
Published: January 2023

Achieving sustainable competitive advantage will be successful for those with competence, namely someone with the knowledge, skills, and qualities of people that include actions, incentives, points, and sales actions needed to carry out a profession or activity. Achieving a sustainable competitive advantage requires the hard work of every SME actor. To face increasingly complex product competition requires a touch of entrepreneurial orientation, the adoption of qualified information technology, and the ability to apply a culture of innovation in every line of business. This study aims to analyze and examine the effect of entrepreneurial orientation, information technology adoption, and innovation culture on the sustainable competitive advantage of SMEs in Pematangsiantar City. This study uses a causal quantitative research design. The number of samples used in this study was 170 SME business actors. The data analysis method used is Partial Least Square (PLS). The data analysis test tool uses the statistical software Smartpls 3.0. The results of this study conclude that entrepreneurial orientation, information technology adoption, and innovation culture have a positive and significant effect on sustainable competitive advantage.
THE INFLUENCE OF JOB MISMATCH, LABOR INCOME, JOB SATISFACTION ON JOB PERFORMANCE AT TIONGHOA PALM OIL FACTORY IN INDRAGIRI HULU, RIAU, INDONESIA
Authors: Fransinatra Ziko , Saputra Raja Marwan Indra , Sholihat Walmi , Adjie Gerhana
Published: January 2023

Referring to the job environment fit theory, the goal of this study is to examine the influence of job mismatch, labor income, job satisfaction on job performance of well-trained experienced labor. Based on the Survey which has done in 2020 from the Tionghoa Palm Oil Factory in Indragiri Hulu, the study analyzed 2000 samples. They are the well-trained experienced workers in Tionghoa Palm Oil Factory in Indragiri Hulu. The research finding shows the level of well-trained experience labor influence on overall labor income, job satisfaction, and Job performance significantly. Particularly, job mismatch of well-trained experience labor and workforce both positively affected labor income and job satisfaction. Moreover, in terms of the relationship between job mismatch, labor income, job satisfaction, and job performance, the effect of labor income and job satisfaction was verified. The study revealed that it is pivotal to approach the attainment of an exemplary workforce from the viewpoint of job mismatch, so that excellent and highly well- trained experience labor as human resources can be placed in the best possible position to greatly increase their personal attributes and productivity. Job mismatch has a positively influence on job performance through labor income and job satisfaction, it is vital to boost advanced talent utilization strategies, which include job mismatch, compensation, such as salaries and bonuses, and psychological aspects, such as job satisfaction.
THE INFLUENCE OF AUDIT OPINION, FINANCIAL DISTRESS, CLIENT COMPANY SIZE, MANAGEMENT CHANGE AND KAP SIZE ON AUDITOR SWITCHING (Empirical Study of Manufacturing Companies Listed on the Indonesia Stock Exchange for the 2017-2021 period)
Authors: Arfamaini Revi
Published: January 2023

Auditor independence issue most frequent maked debate of auditor rotation. This auditor rotation is related with company action to do auditor switching. This research to examine empirically the effect of audit opinion, financial distress, size of client companies, management changes and KAP size on Auditor switching on manufacturing companies that listed at Indonesian Stock Exchange (BEI) in 2017 until 2021.This research is quantitative research explanatory with data collection technique using a pruposive sampling. A total of 39 manufakturing firm are used as sample firm. This research using SPSS ver.18 application and using logistic regression to test the hypothesis because the independent variable is a combination of metric and no metric. The result of this study indicate that the independent variable that effect the provision of auditor switching is audit opinion. While other independent variables are financial distress, size of client companies, management changes and KAP size do not affect the auditor switching.
Modulating Myofibroblastic Differentiation of Fibroblasts through Actin-MRTF Signaling Axis by Micropatterned Surfaces for Suppressed Implant-Induced Fibrosis
Authors: Han Weiju , Chu Qi , Li Junliang , Dong Zixuan , Shi Xuetao , Fu Xiaoling
Published: January 2023

Myofibroblasts, the primary effector cells for implant-induced fibrosis, contribute to this process by secreting excessive collagen-rich matrix and contracting. Thus, approaches that suppress myofibroblasts may achieve desirable suppression effects in the fibrotic process. As one of the important physical properties of materials, material topographical structures have been proven to affect various aspects of cell behaviors, so is it possible to manipulate the formation of myofibroblasts by tailoring the topographical properties of medical devices? In this study, polycaprolactone (PCL) surfaces with typical micropatterns (micro column and micro pit) were fabricated. The regulatory effects of surface micropatterns on the myofibroblastic differentiation of fibroblasts were investigated. Compared to the flat surfaces and surfaces with micro pit, surfaces with micro columns triggered the F- to G-actin transition, inhibiting the nuclear transfer of myocardin-related transcription factor-A. Subsequently, the downstream gene α-smooth muscle actin, which is a marker of myofibroblasts, was suppressed. Further in vivo investigation showed that PCL implants with micro-column-patterned surfaces inhibited the formation of peri-implant fibrotic capsules. Our results demonstrate that surface topographical properties are a potent regulator of fibroblast differentiation into myofibroblasts and highlight the antifibrotic potential of modifying surfaces with micro-column patterns.
The Relationships Between Materialism, Benevolent Sexism, and Body Shame in South Korean College Women: The Mediating Effects of Internalization, Body-Surveillance, and Face-Surveillance
Authors:   INSTITUTE FOR EDUCATIONAL RESEARCH, Chi In Chi , Seo Young Seok
Published: January 2023

On the basis of Objectification Theory, the present study examined the mediating effects of internalization of beauty ideals, body surveillance, face surveillance in the relationships between materialism, benevolent sexism and body shame. A total of 472 female college students from various universities located in South Korea participated in this study. Results from structural equation modeling analysis indicated that the measurement model yielded evidence of good fit. Bootstrap methods were used to estimate the magnitude of indirect effects. As a result, materialism directly influenced internalization, body-surveillance and face-surveillance. The link between materialism and body shame was mediated by internalization and face-surveillance. Furthermore, benevolent sexism directly influenced internalization, face-surveillance and body shame. The link between benevolent sexism and body shame was mediated by internalization and face-surveillance. Theoretical and practical implications are discussed.
Pahljača kot ceremonialni in religijski predmet na Japonskem
Authors: Visočnik Gerželj Nataša
Published: January 2023

Pahljače niso le pripomoček za hlajenje, ampak imajo veliko večjo vlogo v družbenem življenju, navadah in umetniškem razvoju ljudi. Povezane so z nekaterimi kulturnimi vidiki Japonske, kot so pripomočki za ples, orodje za prenos sporočil, predmet za izkazovanje bogastva in družbenega položaja, površina za umetniško izražanje ter predmet, povezan z obrednimi in religijski nameni. Uporaba pahljač ob verskih in obrednih priložnostih se je v zgodovini močno uveljavila. Pahljačo so ljudje držali v roki ali postavili predse, ko so molili k bogovom, lahko so jo uporabljali kot simbolično manifestacijo božanstva ali samo kot orodje za molitev k bogovom, uporabljala se je kot darilo ob obrednih in posebnih priložnostih, kot so poroke, pogrebi in čajni obredi. Za razumevanje vloge pahljače v japonski družbi in zlasti na področju religije je v prispevku predstavljeno zgodovinsko ozadje razvoja tega pripomočka, v katerem spoznamo razvoj različnih vrst, oblik ter načinov uporabe v obrednih in verskih dogodkih. Z raziskovanjem muzejskih zbirk predmetov iz Azije v slovenskih muzejih je bilo najdenih nekaj japonskih pahljač, ki bi lahko bile podobne tistim, ki so služile ritualnim namenom v verskem in obrednem življenju. Te so predstavljene in analizirane, proučene so njihove konstrukcije, oblike, dimenzije in slogi, ki so opredeljeni s pomočjo literature, in primerjani s pahljačami, ki so jih uporabljali v verskih obredih na Japonskem.
Liu Hai teases the golden toad
Authors: Vampelj Suhadolnik Nataša
Published: January 2023

This paper analyses auspicious motifs on the wooden mirror frame from the Skušek Collection, housed in the Slovene Ethnographic Museum. The auspicious patterns are discussed in the broader context of Chinese cultural and linguistic structures, which in the visual representation of combined plant, animal, and figure motifs, leads to innumerable combinations of rebuses and puns with homonyms based on Chinese historical, literary, philosophical, religious, and mythological tradition. In this way, auspicious motifs developed into a standard decorative scheme, providing a rich source for both literati and artisans, and were exported to neighbouring countries and the West. They are particularly widespread on objects for daily use given as tokens of good wishes for happiness, prosperity, wealth, longevity and progeny, which are also meant to ensure their fulfilment. This can be seen on the wooden mirror frame purchased in Beijing between 1914 and 1920 by naval officer Ivan Skušek Jr. In the first part of the paper, an iconographic analysis of the motifs is made, while in the second part, the messages contained in the visual symbolic codes are analysed in more detail, taking into account the arrangement of the motifs in the completed narrative and the way in which these images are interpreted.
Poetry-Making as Healing
Authors: Latham Callan
Published: January 2023

Many of us are taught to believe that poetry is restricted to a narrower existence than it truly is. Many people don’t enjoy poetry, or say they don’t understand it—but luckily, poetry, for a while now, is becoming more accessible as an art form. In this work, I seek to further this accessibility by connecting writing poetry with building a house.
The global development experience of the industrial parks and their benefits for the development of Ukraine’s economy
Authors: Hornostai N. I. , Mykhalchenkova O. Y.
Published: January 2023

The article deals with the current problem of creation and development of industrial parks in Ukraine. Currently, the direction is considered promising for the development of the economy, and the author examines the current portrait of the industrial park according to key characteristics: the industrial park ownership form, the type of project being developed, the location of the park and the total size of the park territory. The article also pays special attention to the history, development, and functioning of China’s industrial parks. Industrial parks increasingly develop the industrial potential of a specific territory, contribute to the creation of new jobs, create a comfortable business environment, and also increase tax revenues to the budget. Attracting high-tech production as residents, industrial parks are one of the elements of innovative infrastructure. Industrial parks are a global trend in economic development. For example, Hungary produces a third of its GDP there, Turkey saturates priority regions with them, Poland restores depressed communities. Among the benefits for park participants are exemption from paying VAT on the import of new equipment for personal use, exemption from income tax for ten years, local governments will be able to set preferential rates of real estate tax and land fees. The main goals of creating an industrial park are socio-economic development of a closed city, improving the quality of life of the population, through the creation of new high-tech industries, the main employees of which will be highly qualified released personnel. Industrial parks are a real help to the economy during and after the war.
Lidská oběť z pozdní doby halštatské v jižních Čechách?
Authors: Chytráček Miloslav , Chvojka Ondřej , John Jan , Michálek Jan , Stránská Petra , Šálková Tereza
Published: January 2023

Příspěvek se věnuje nálezům odkrytým na Vraném vrchu u Spolí, okr. Český Krumlov. V nadmořské výšce 635 m u paty skalního výběžku na svahu spadajícím příkře k Vltavě byla v hl. 20 cm nalezena skupina šesti bronzových náramků z pozdní doby halštatské. Při následném sondážním výzkumu ověřujícím místo nálezu se ve stejné hloubce našlo deset zlomků dislokovaných lidských kostí z dospělého jedince, v těsné blízkosti náramků ležel skleněný kroužek hnědožluté barvy o průměru 34 mm. Celková situace svědčí pravděpodobně o „obětním“ charakteru lokality. Určení rostlinných makrozbytků umožnilo částečně rekonstruovat přírodní prostředí zkoumaného místa. Analýza artefaktů i celé nálezové situace, evidence dalších nálezů v širším okolí depotu náramků, svědectví výjevů na soudobém situlovém umění i paralely z prostoru střední a jižní Evropy umožňují položit si řadu otázek o podobách různých náboženských rituálů starší doby železné. Výjimečný skleněný artefakt ze Spolí prozrazuje nadregionální kontakty, práce se v širších souvislostech zabývá též problematikou rekonstrukce dálkových koridorů.
Vitrektomi dengan Anestesi Lokal pada Ablasio Retina Rhegmatogen di Rumah Sakit Cipto Mangunkusumo
Authors: Dharma Andhika Guna , Djatikusumo Ari , Elvioza Elvioza , Adriono Gitalisa Andayani , Yudantha Anggun Rama , Hutapea Mario Marbungaran , Victor Andi Arus
Published: January 2023

Latar Belakang: Vitrektomi pada ablasio retina dapat dilakukan dengan anestesi umum maupun anestesi lokal. Anestesi lokal kerap dipilih atas keunggulannya dalam efisiensi waktu dan biaya. Tujuan: Memaparkan tingkat keberhasilan anatomi dan fungsional vitrektomi dengan anestesi lokal pada ablasio retina rhegmatogen di Divisi Vitreoretina RSCM-FKUI.
Metode: Penelusuran retrospektif pada 42 pasien ablasio retina rhegmatogen yang dilakukan vitrektomi dengan anestesi lokal di RSCM-FKUI pada Januari 2017 – Juni 2017.Hasil: Terjadi peningkatan tajam penglihatan pada enam bulan pasca vitrektomi dengan anestesi lokal yaitu visus ?1/60 dari 55% menjadi 77%. Kondisi retina menempel pasca tindakan operasi vitrektomi dengan anestesi lokal sebanyak 93%.
Kesimpulan: Tingkat keberhasilan fungsional sebesar 77% dan keberhasilan anatomis 93%.
Efektivitas Pemberian Injeksi Intravitreal Ranibizumab pada Penderita Age Related Macular Degeneration (ARMD) Tipe Neovaskular
Authors: Soedarman Soefiandi , Sjamsoe Soedarman , Girsang Waldensius , Elvioza Elvioza , Andayani Gitalisa , Agustiawan Referano
Published: January 2023

Tujuan: menunjukkan adanya perubahan pada best corrected visual acuity (BCVA) dan ketebalan retina sentral (central retinal thickness/CRT) setelah 1 tahun pemberian intravitreal ranibizumab pada kasus Age Related Macular Degeneration (ARMD) neovascular berdasarkan jumlah injeksi dan metode pemberian.
Metode: Penelitian retrospektif ini terdiri dari 38 mata yang mendapatkan injeksi ranibizumab pada tahun 2011-2012 di Jakarta Eye Center. Berdasarkan jumlah injeksi, 24 mata mendapatkan 1-3 kali injeksi/tahun dan 14 mata mendapat lebih dari 3 kali injeksi/tahun. Berdasarkan metode pemberian, 10 mata diberikan loading dose dan 28 mata diberikan injeksi sesuai dengan kebutuhan.
Hasil: usia rata-rata subyek adalah 72.5±8.83 tahun. Pengamatan dalam 1 tahun dimulai sejak injeksi intravitreal ranibizumab pertama diberikan. Berdasarkan jumlah injeksi, keompok dengan lebih dari 3 kali injeksi/tahun menunjukkan peningkatan BCVA yang lebih tinggi dibandingkan dengan kelompok yang mendapatkan 1-3 kali injeksi/tahun (-0.1 LogMAR vs -0.05 LogMAR). Kelompok yang mendapat lebih dari 3 kali injeksi/tahun juga menunjukkan pengurangan CRT yang lebih besar dibandingan dengan kelompok yang mendapat 1-3 kali injeksi/tahun (118.29 ?m vs 107.6 ?m). Berdasarkan metode pemberian, kelompok dengan loading dose menunjukan BCVA -0.1 LogMAR sedangkan pada kelompok yang mendapat dosis sesuai kebutuhan tidak menunjukkan perubahan. Kelompok metode loading dose menunukkan pengurangan CRT yang lebih besar dibandingan kelompok yang mendapat dosis sesuai kebutuhan.
Simpulan: injeksi intravitreal ranibizumab dengan lebih dari 3 kali injeksi dan dengan metode loading dose memberikan hasil yang lebih baik dalam tatalaksana ARMD neovaskular.
Prediction Errors and Accuracy of Intraocular Lens (IOL) Calculation Formulas in Pediatric Eyes
Authors: Muslim Fitri , Barliana Julie Dewi
Published: January 2023

Background: Acquiring an accurate intraocular (IOL) power in children undergoing cataract surgery is challenging. Different IOL calculation formulas in children have been previously studied to achieve a precise prediction of the IOL power. Larger errors in IOL formula predictions have shown in several studies on children as future growth of the eye affects the keratometry readings and axial length. Prediction error (PE) and absolute prediction error (APE) can be effective indicators in assessing the accuracy of IOL power calculation formulas. Therefore, this review aims to investigate the accuracy of IOL power calculation formulas in pediatric eyes by measuring PE and/or APE value.
Methods: A comprehensive search was conducted from various electronic databases (Pubmed, Clinical Key, and Ophthalmology Advance) using relevant search terms. Included studies were screened using predefined inclusion and exclusion criteria to identify comparative studies comparing the accuracy of IOL calculation formulas in pediatric patients.
Result: Ten studies including 964 eyes were identified to compare different IOL formulas: Hoffer Q, SRK/T, SRK II, Holladay 1, and Holladay 2. Smaller prediction error is related to better postoperative refraction. Among included studies, Holladay 2 had the smallest mean prediction errors (PE), while SRK/T formula was the best formula of all included studies in pediatric patients as it had the smallest mean absolute prediction errors (APE). Hoffer Q also had the smallest mean APEs in shorter eyes (axial length <22 mm).
Conclusion: This study demonstrates that none of the established formulas found to be more superior than any other formulas in predicting IOL power in children. Biometry examination in patients with less than one year of age tends to show a lower accuracy.
Aspek Klinis Pasien Endoftalmitis Akut Post Operatif Katarak di RSUD Dr. Saiful Anwar Malang
Authors: Agustin Ferriya Sri , Sofia Ovi , Metita Mirza
Published: January 2023

Tujuan : Untuk melaporkan aspek klinis, terapi, hasil terapi dan insiden dari endoftalmitis akut pasca operatif katarak di RSUD Dr. Saiful Anwar, Malang.Metode : Penelitian deskriptif analitik retrospektif yang menggunakan rekam medik dengan diagnosis endoftalmitis akut pasca operatif dari Januari 2015 - Desember 2018 di RSUD Dr. Saiful Anwar. Kami mencatat kasus endoftalmitis pasca operasi katarak yang terjadi dalam 6 minggu setelah operasi. Data yang dikumpulkan meliputi demografi, temuan klinis, hasil mikrobiologi, terapi dan komplikasi.
Hasil : Didapatkan 31 kasus endoftalmitis akut pasca operatif, dimana 29 kasus merupakan rujukan. Dua puluh dua kasus pasca fakoemulsifikasi, 5 kasus pasca extra capsular cataract extraction dan 4 kasus pasca small incision cataract surgery. Lebih dari 50 % pasien adalah laki-laki (58,06 % ), berusia 61-70 tahun (38,7%) dan terjadi pada minggu pertama pasca operasi (45,2%). Penyakit penyerta meliputi diabetes mellitus (41,9%) dan hipertensi (32,3%).Terapi diberikan sesuai protokol Endophthalmitis Vitrectomy Study, diantaranya injeksi antibiotik intravitreal, vitrektomi, antibiotik sistemik dan topikal, kortikosteroid sistemik dan topikal. Didapatkan perbedaan signifikan antara visus sebelum dan setelah terapi (p=0.038), namun tidak didapatkan perbedaan antar kelompok terapi. Pada 9 kasus terjadi komplikasi, 2 diantaranya dilakukan eviserasi oleh karena perforasi kornea.
Kesimpulan : Sebagian besar kasus endoftalmitis akut pasca operatif terjadi setelah fakoemulsifikasi, pada laki-laki, usia 61-70 tahun dan terjadi pada minggu pertama pasca operasi. Organisme terbanyak yang teridentifikasi adalah bakteri gram positif. Didapatkan perbaikan visus yang signifikan dengan pemberian terapi.
Functional Outcome of Ilizarov Technique in Managing Proximal Tibial Fracture in Combined Military Hospital, Rawalpindi
Authors: Udin Hassan Hassan
Published: January 2023

Background: Tibial plateau fractures involve injuries affecting the major weight-bearing joint and result in functional impairment which can be prevented by implying competent treatment techniques including dual column plating, assisted reduction, internal fixation with plating and Ilizarov circular fixator. The objective of this study was to evaluate the functional outcome of Ilizarov technique in treating closed tibial plateau fractures.

Methodology: A Quasi experimental study was conducted in the Orthopedic department of Combined Military Hospital, Rawalpindi from 30th July 2019 to 29th January 2020.  A total of 100 patients with tibial plateau fractures of Schatzker type III to VI, 20 to 60 years of age of either gender were included. In all patients, Ilizarov technique was performed. Data were entered in SPSS 22. Descriptive analysis was done for quantitative variables and percentages were calculated for qualitative variables. Chi square test was applied to determine association of variables with functional outcome.

Results: Mean age of patients was 37.42 ± 8.94 years. Out of 100 patients, 70% were males and 30% were females, 76% patients managed with Ilizarov technique in treating closed tibial plateau fracture had excellent functional outcome, 15% good outcome, 5%  fair and 4% poor outcome. Functional outcome with respect to age, gender, BMI and DM showed statistically significant difference with p value 0.017, 0.016, 0.004 and 0.001 respectively.

Conclusion: Functional outcome of Ilizarov technique in treating closed tibial plateau fracture is significantly better.

Keywords: Ilizarov Technique, Orthopedic Fixation Devices, Tibial Fractures
Vascular Complications and their Risk Factors in Patients of Diabetes Mellitus, Type 2
Authors: Dr. Tariq Farhad  , Dr. Muhammad Rahim Burghri  , Dr. Muhammad Uzair Memon  , Dr. Soha Fatima  , Dr. Yasir Latif  , Haji Abdullah Memon
Published: January 2023

Introduction: To evaluate the vascular complications and their correlation with different risk factors among type-2 diabetic patients in Hyderabad, Sindh, Pakistan.

Methodology: Cross-sectional study was conducted at the department of medicine Isra University Hospital, Hyderabad from March to September 2021. Type 2 diabetics of either sex, between ages 20 and 70 years, on diabetic medication, were included in the study. While patients with type I diabetes, unconscious or with any mental health issues were excluded. A Non-random consecutive sampling technique was applied for the selection of participants. Socio-demographic, disease and medication information was collected using a written questionnaire while serum glucose level, albumin and lipid profile was analyzed.

Results: Over half of the participants (51.72%) were females, while most (70.87%) of the participants were aged < 40 years. A total of 124(28.5%) patients showed symptoms of macro-vascular complications with most (16.78%) of them having coronary artery disease. A significant relation (p<0.05) was found between coronary artery disease and age, duration of diabetes, blood pressure, body mass index and serum triglycerides. Peripheral vascular disease was significantly related (p<0.05) to the duration of diabetes, systolic blood pressure and serum triglyceride. While significant relation (p<0.05) between cerebrovascular disease with age, systolic and diastolic BP was there.

Conclusion: Coronary artery disease seems to be the most common macro-vascular complication among type 2 diabetic patients, with a high prevalence of risk factors such as advanced age, duration of DM, male sex, hypertension, Body Mass Index, and serum triglycerides.

Keywords: Coronary artery disease, diabetes mellitus type 2, Macro-vascular complications, peripheral vascular disease.
Ectopic Mediastinal Parathyroid Adenoma Excision via Video Assisted Thoracoscopic Approach: A Case Report
Authors: Umair Bilal , Sohail saqib  , Muhammad rashid husnain  , Farhan  , Raheel
Published: January 2023

Ectopic parathyroid adenomas can be a cause of recurrent and refractory hyperparathyroidism. Majority of parathyroid adenomas are located in the neck region, however in very few cases they are located within the mediastinum. In such cases excision via cervical approach is not possible and it becomes a diagnostic as well as surgical challenge. Excision via thoracoscopic approach is a preferred approach in this regard. Here we represent a case of ectopic parathyroid adenoma embedded within thymus gland which underwent surgical excision via thoracoscopic approach.

Key words: Ectopic, Parathyroid adenoma, Thoracoscopy
Digitalisasi Ekonomi Sirkular di Indonesia
Authors: Salim Ahmad Ramdani
Published: January 2023

ABSTRACT

Circular economy is an economic concept based on a closed loop in which all processes strive to reuse resources, raw materials, and finished products for as long as possible while producing as little waste or waste as possible. This concept applies the 5R principle, which stands for Reduce, Reuse, Recycle, Recovery, and Repair. The economic circular's discussion is closely related to the goals and agreements reached at the G20 meeting in Bali on November 15-16, 2022. In order to implement this circular economy with significant and contemporary economic added value, efforts must be made to accelerate digitization of all channels and aspects of the circular economy. This community service program is carried out through direct and interactive exposure methods to stakeholders supported by information processing through a qualitative literature review. The circular economy will have a positive impact on the environment as well as the financial aspects as a result of this digitization, and its utilization is expected to touch all related elements in an integrated manner. The government and all stakeholders, particularly in Indonesia, face a challenge in gaining a comprehensive understanding of circular economy digitization.
Interface engineering of amorphous gallium oxide crossbar array memristors for neuromorphic computing
Authors: Masaoka Naoki , Hayashi Yusuke , Tohei Tetsuya , Sakai Akira
Published: January 2023

This paper reports on the fabrication and characterization of crossbar array memristors using amorphous gallium oxide (a-GaO
x
) for implementing high-speed and wide-dynamic range artificial synaptic functions. The a-GaO
x
memristors were fabricated by pulsed laser deposition in an argon atmosphere using a platinum bottom electrode and an indium tin oxide (ITO) top electrode. We revealed that the interface engineering at a-GaO
x
/ITO is the key to demonstrating exemplary resistive switching operation. Stable counter figure-8 hysteresis loops were obtained by voltage application, leading to the successful demonstration of non-volatile retention over 104 s and the multi-level conductance modulation. Furthermore, spike-timing-dependent plasticity (STDP) was artificially implemented by applying pre- and post-spike voltages to the device. Consequently, significant weight-change rates were achieved in the asymmetric STDP imitation, which can be attributed to the reliable resistive switching properties of the device with an extensive dynamic range. These results indicate that the a-GaO
x
crossbar array memristor is a promising hardware platform for neuromorphic computing applications.
Two-photon photoacoustic spectroscopy of liquid solutions under degenerate and non-degenerate laser excitation
Authors: Sakurai Shiori , Isoda Miki , Harata Akira
Published: January 2023

A new apparatus to measure the two-photon (2P) absorption of a dilute liquid solution is designed using tunable laser excitation with an optical parametric oscillator and photoacoustic (PA) detection. Two-photon absorption of non- or less-fluorescent solute molecules in dilute liquid solutions was investigated. When PA signal intensity was plotted versus half of an excitation laser wavelength, a degenerate 2P PA spectrum of nitrobenzene showed a shape similar to that of the absorption spectrum, as expected from Laporte’s selection rule, with a slight red shift. The non-degenerate 2P PA spectrum of diphenylacetylene was compared with the degenerate 2P PA spectrum and good matching was observed. Results demonstrate that this method is suitable for observing 2P absorption for weakly fluorescent substances.
Enhanced extreme ultraviolet lighting using carbon nanotube-based cold cathode electron beam irradiation
Authors: Yoo Sung Tae , Park Kyu Chang
Published: January 2023

Laser-produced tin (Sn) plasma (LPP) is used to produce high-performance semiconductors using extreme ultraviolet (EUV), but LPP generates debris that limits the lifespan of the optical system, so research on debris mitigation is being conducted. When electrons are directly irradiated to a solid target, occurrence of debris can be minimized, and compact and low-cost EUV lighting can be manufactured. Here, we demonstrated enhanced EUV generation by optimizing the irradiation of Sn with electrons emitted from carbon nanotube-based cold cathode electron beam (C-beam). To minimize debris, a usable zone in which Sn does not melt was identified. It was demonstrated that using two C-beams in the usable zone increased the EUV intensity by about two times compared to using one C-beam. The multiple C-beam irradiation technique enables high-output EUV lighting by overlapping EUV light, which should be led by the development of advanced lithography and inspection technology.