bluuebunny/crossref_metadata_2025 huggingface dataset:
Repositorium für die Medienwissenschaft Maud Ceuterick Post-cinematic spectatorship in virtual reality: Negotiating 3DoF and 6DoF in QUEERSKINS: ARK
Authors: Ceuterick Maud
Published: August 2021

Queerkins: Ark is the second chapter of a four-chapter cinematic virtual reality experience Queerskins (2018-ongoing). The piece, made by Illya Szilak and Cyril Tsiboulski in collaboration with the choreographer Brandon Powers, premiered at the Venice VR Expanded exhibition of the Mostra Interna-zionale d’Arte Cinematografica La Biennale di Venezia that took place digi-tally – in virtual reality – from 2-12 September 2020. As visitors, wearing a VR headset, enter the virtual world of the Venice Biennale, they embark on a gondola...
Affirmative Aesthetics and Wilful Women: Gender, Space and Mobility in Contemporary Cinema
Authors: Ceuterick Maud
Published: August 2021

While the idea of women who stay at home and men who dominate the streets may seem outdated, binary considerations of gender, space, and power still proliferate in contemporary cinema. This open access book adopts a fluid approach to space designed to accommodate wilful, affirmative, and imaginative perspectives of gender on screen. Through close analysis, or micro-analysis, of Messidor (Alain Tanner, 1979), Vendredi Soir (Claire Denis, 2002), Wadjda (Haifaa Al-Mansour, 2012), and Head-On (Fatih Akin, 2004), this book looks for light, textures, rhythms, movement, and sound that give shape to affirmative forms, forms that contribute to rewriting bodies and spaces—such as cars, homes, and city streets—that reject traditional gender and power structures. Wilful women drive this book forward, through movement and pauses, imagination and desire, persistence and dissimulation, eroticism, performance and abjection.
Queering Cultural Memory Through Technology: Transitional Spaces in AR and VR
Authors: Ceuterick Maud
Published: August 2021

While cinema boasts of a long history that has placed the representation and aesthetics of memory at its center, virtual reality (VR) and augmented reality (AR) are only starting to shape their own aesthetic and narrative engagement with memory. Through the analysis of Chez Moi (Caitlin Fisher and Tony Vieira, 2014), Queerskins: Ark (Illja Szilak, 2020), and Homestay (Paisley Smith, 2018), this essay shows how cinematic AR and VR involve the viewers’ movement to produce and transform collective memory and spatial habitation. Feminist digital geographies, film and media theory, and the concept of orientation developed by Sara Ahmed in Queer Phenomenology give sense to how sound, images and viewers’ movement participate in rewriting collective memory and cultural symbols. As these artworks present personal memories of struggles to find a home within present spaces, they queer hegemonic orientations of the subject, and invite viewers to realign body and space within ever-changing virtual and digital spaces.
The effect of building retrofit measures on CO2 emissions reduction – A case study with U.S. medium office buildings
Authors: Lou Yingli , Yang Yizhi , Ye Yunyang , Zuo Wangda , Wang Jing
Published: August 2021

Building retrofit has great potential to reduce CO2 emissions since buildings are responsible for 36% of emissions in the United States. Several existing studies have examined the effect of building retrofit measures on CO2 emission reduction. However, these studies oversimplified emission factors of electricity by adopting constant annual emission factors. This study uses hourly emission factors of electricity to analyze the effect of building retrofit measures on emission reduction using U.S. medium office buildings as an example. We analyzed CO2 emission reduction effects of eight building retrofit measures that related to envelop and mechanical system in five locations: Tampa, San Diego, Denver, Great Falls, and International Falls. The main findings are: (1) estimating CO2 emission reduction with constant emission factors overestimates the emission reduction for most measures in San Diego, while it underestimates the emission reduction for most measures in Denver and International Falls; (2) The same retrofit measure may have different effects in CO2 emission reduction depending on the climates. For instance, improving lighting efficiency and improving equipment efficiency have less impacts in emission reduction in cold climates than hot climates; and (3) The most energy efficient measure may not be the most emission efficient measure. For example, in Great Falls, the most energy efficient measure is improving equipment efficiency, but the most emission efficient measure is improving heating efficiency.
Exposure to violence as an environmental pathway linking low socioeconomic status with altered neural processing of threat and adolescent psychopathology
Authors: Weissman David G , Rosen Maya L. , Colich Natalie , Sambrook Kelly , Lengua Liliana , Sheridan Margaret A. , McLaughlin Katie A
Published: August 2021

Background: Low childhood socioeconomic status (SES) is associated with increased risk for psychopathology, due in part to heightened exposure to environmental adversity. Adverse experiences can be characterized along dimensions, including threat and deprivation, that contribute to psychopathology via distinct mechanisms. The current study investigated a neural mechanism through which threat and deprivation may contribute to socioeconomic disparities in psychopathology.Methods: Participants were 177 youths (83 female) aged 10-13 years recruited from a cohort followed since age 3. SES was assessed using the income-to-needs ratio at age 3. At age 10-13, restrospective and current exposure to adverse experiences and symptoms of psychopathology were assessed. At this same timepoint, participants also completed a face processing task (passive viewing of fearful and neutral faces) during a functional magnetic resonance imaging scan. Results: Lower childhood SES was associated with greater exposure to threat and deprivation experiences. Both threat and deprivation were associated with higher depression symptoms, whereas threat experiences were uniquely linked to PTSD symptoms. Greater exposure to threat, but not deprivation, was associated with higher activation in dorsomedial prefrontal cortex (dmPFC) and precuneus to fearful compared to neutral faces. Precuneus activation in this contrast mediated the association between SES and PTSD symptoms. Conclusion: Precuneus and dmPFC are hubs of the default mode network thought to be involved in internally directed attention and cognition. Greater engagement of these regions in response to threat cues may contribute to PTSD symptomatology. Threat and contributes to socioeconomic disparities in adolescent psychopathology through distinct neural mechanisms from deprivation.
The Relationship Between Isolated Hypertension with Brain Volumes in UK Biobank
Authors: Newby Danielle , Winchester Laura , Sproviero William , Fernandes Marco , Ghose Upamanyu , Lyall Donald , Launer Lenore , Nevado-Holgado Alejo J.
Published: August 2021

Hypertension is a well-established risk factor for cognitive impairment, brain atrophy, and dementia. However, the relationship of other types of hypertension, such as, isolated hypertension on brain health and its comparison to systolic-diastolic hypertension (where systolic and diastolic measures are high), is still relatively unknown. Due to its increased prevalence, it is important to investigate the impact of isolated hypertension to help understand its potential impact on cognitive decline and future dementia risk. In this study, we compared a variety of global brain measures between participants with isolated hypertension to those with normal blood pressure or systolic-diastolic hypertension using the largest cohort of healthy individuals. Using the UK Biobank cohort, we carried out a cross-sectional study using 29775 participants [mean age 63 years, 53% female] with BP measurements and brain MRI data. We used linear regression models adjusted for multiple confounders to compare a variety of global, sub cortical and white matter brain measures. We compared participants with either isolated systolic or diastolic hypertension with normotensives and then with participants with systolic-diastolic hypertension. The results showed that participants with isolated systolic or diastolic hypertension taking BP medications had smaller grey matter but larger white matter microstructures and macrostructures compared to normotensives. However, isolated hypertensives had larger total grey matter and smaller white matter traits when comparing these regions with participants with systolic-diastolic hypertension.These results provide support to investigate possible preventative strategies that target isolated hypertension as well as systolic-diastolic hypertension to maintain brain health and/or reduce dementia risk earlier in life particularly in white matter regions.
Virtues for Real-World Utilitarians
Authors: Schubert Stefan , Caviola Lucius
Published: August 2021

Utilitarianism says that we should maximize aggregate well-being, impartially considered. But utilitarians that try to apply this principle will encounter many psychological obstacles, ranging from selfishness to moral biases to limits to epistemic and instrumental rationality. In this chapter, we argue that utilitarians should cultivate a number of virtues that allow them to overcome the most important of these obstacles. We select virtues based on two criteria. First, the virtues should be impactful: they should greatly increase your impact (according to utilitarian standards), if you acquire them. Second, the virtues should be acquirable: they should be psychologically realistic to acquire. Using these criteria, we argue that utilitarians should prioritize six virtues: moderate altruism, moral expansiveness, effectiveness-focus, truth-seeking, collaborativeness, and determination. Finally, we discuss how our suggested list of virtues compares with common conceptions of utilitarianism, as well as with common sense morality.
The Initiator of Women and Their Reasons for Entry in Micro-Enterprises
Authors: Jain Bandana Kumari
Published: August 2021

This paper aims to describe women and their enterprises and to assess the initiator, and their reasons behind the commencement of their business. The paper deals with the micro-enterprises controlled and managed by a disadvantaged section of women in Biratnagar Metropolitan City. The sample of 54 deprived women running micro-enterprises was selected implying a purposive sampling method. Primary data were collected with a structured questionnaire that was administered by the researcher. The study depicted that there were 3 main motivating factors self-motivation, self-employment attitudes, and educational background of leaning towards micro-enterprises. The disadvantaged section of women due to various social inhibitions and personal reasons, there is a little chance of getting formal jobs in an organized sector. This compelled them to run micro-enterprises. Women belonging to disadvantaged classes are willing for productive involvement in economic gainful activities pushing them to micro-enterprises.
Mieszkalnictwo społeczne w Polsce - wyzwania i ograniczenia
Authors: Muzioł-Węcławowicz Alina
Published: August 2021

This article explores the need for more intensive development of social rental housing in Poland, especially communal rental housing and social rental housing provided by Social Housing Associations (TBSs). The first section briefly examines the terminology and addresses the main challenges in Polish housing in accordance with the goals of the housing policy programmes. The second section reports on the recent trends in social rental housing. The third section presents selected issues of the recent development of Polish social rental housing. Further, the author tries to evaluate the need for new housing construction by local authorities and by TBSs. Due to the lack of reliable information, the required amount of new housing can only be approximated indirectly. In the next section, she presents legislative initiatives regulating and supporting social rental housing, especially in terms of modifying financial instruments. The final section contains an assessment of progress in social rental housing and proposals for further reforms in Polish housing policy.
Communication Research, the Geopolitics of Knowledge and Publishing in High-Impact Journals: The Chronicle of a Commodification Process Foretold
Authors: Marí Sáez Víctor Manuel , Martins do Nascimento Clara
Published: August 2021

The reforms in higher education that have been introduced on a global scale in recent years have gone hand in glove with the progressive imposition of scientific journal impact factors, all of which points to the rise of academic capitalism and digital labour in universities that is increasingly subject to the logic of the market. A diachronic analysis of this process allows for talking about, paraphrasing Gabriel García Márquez, the chronicle of a commodification process foretold. More than twenty years ago it was clear what was going to happen, but not how it was going to unfold. Accordingly, this article reconstructs that process, comparing the Spanish case with global trends and highlighting the crucial role that governmental agencies like the National Agency for Quality Assessment and Accreditation and specific evaluation tools like the publication of scientific papers in high-impact journals have played in it. In this analysis, Wallerstein’s core-periphery relations and the concept of commodity fetishism, as addressed by Walter Benjamin, prove to be especially useful. The main research question posed in this article is as follows: What does the process of the commodification of communication research look like in Spain?
Media Sosial dalam Membentuk dan Menggerakkan Gerakan Sosial
Authors: Tjokro Lauren Kurnia , Wiloso Pamerdi Giri , Herwandito Seto
Published: August 2021

Start from concerns about social phenomena beg,
Sikap Konsumen Terhadap Produk Honda Beat Pop
Authors: Wijaya Wisnu Murti , Kancana Sauptika
Published: August 2021

This study aims to determine the attributes which are used to measure consumer
LEDAKAN AMONIUM NITRAT: FAKTOR PEMICU URGENSI PERUBAHAN SISTEM POLITIK DI LEBANON
Authors: Harmiyati Harmiyati
Published: August 2021

Lebanon, a country with a confessional political system, fragmented its political power based on the composition of religions. The political system is fragile and become an obstacle in creating national integrity. The fragility of the political system has always been the source of unstable politics and economics, however, the system remains until now. These problems are worsened by the fact that Lebanese community are exclusive in certain areas based on their religion, thus it triggers the imbalance of social and economic. On the other hand, the number of corruptions in the country has increased among the political elites hence social, political, and economical chaos are undeniable.
Role of Child Care in Creating Inclusive Communities and Access for All
Authors: van Rhijn Tricia , Underwood Kathryn , Frankel Elaine , Lero Donna S. , Spalding Karen , Janus Magdalena , Friendly Martha , Haché Arlene
Published: August 2021

To inform the development of an inclusive national child care system for all families and children, we examine the institutional interactions of 127 Canadian families with disabled children. Our analysis demonstrates that families participated in numerous early-years services, but 79.5% experienced exclusion. Using an institutional ethnography lens, we illustrate that exclusion occurs through policy and regulations families confront to gain entry, maintain enrolment, and contend with professional meta-texts. Key rights-based, economic, and inclusion policy considerations are provided. Our research and policy considerations recognize not only the importance of inclusion in child care but also the role of child care in creating inclusive communities.
Veterinary Students’ Use of Learning Objectives
Authors: Olin Shelly J. , Springer Cary , Royal Kenneth
Published: August 2021

Learning objectives (LO) are the foundation of a competency-based curriculum, but no studies assess how students use LO for exam preparation and/or their general attitudes toward LO. Therefore, the objectives were to evaluate how much veterinary students use LO to study, assess student attitudes toward simple and expanded LO, and determine if LO type impacts grade performance. An alternative-treatment design with pre-test and nonrandom groups was used. Veterinary students in the Endocrine Systems course in the 2019 spring ( n = 89) and fall ( n = 86) semesters were invited to participate and provided with simple and expanded LO, respectively. After an examination, participants completed an online survey before and after receiving their grade. Overall, 114 students (65%) responded. The percentage of students using simple versus expanded LO was not statistically different (χ2 = 1.874, df = 1, p = .171). Fifty-five students did not use LO; the majority (76.4%) preferred other study methods. Independent samples t-tests found no significant differences in student perceptions of helpfulness ( t(30) = −1.118, p = .272), format ( t(29) = 0.813, p = .423), or relevance ( t(30) = 0.326, p = .747) between simple and expanded LO. Students agreed that LO were helpful ( M = 3.33) and well formatted ( M = 3.42) and that the provided information was relevant and detailed ( M = 3.36). An ANOVA tested whether exam grade differed between students using simple versus expanded LO and for students who did not use LO; no significant differences were found ( F(2,78) = .087, p = .917). In conclusion, students did not prefer more detailed LO and LO use did not impact grade performance.
Mentoring New Veterinary Graduates for Transition to Practice and Lifelong Learning
Authors: Freeman Douglas , Hodgson Kate , Darling Marcia
Published: August 2021

A new veterinarian’s smooth and rapid transition from education to clinical practice is critical to their success and that of their new professional homes. Successful mentoring relationships are critical to smoothing the transition to practice, particularly when independent clinical decisions are abruptly required. A mentor acts as a personal coach and teacher, providing both career and personal guidance. While the profession has focused on training mentors, it has paid little attention to teaching mentees how to maximize the benefits of the relationship. Veterinary colleges can do more to equip their graduates with the skills they need to manage their change to working life successfully. The Western College of Veterinary Medicine’s (WCVM) substantive gap analysis revealed mentee training as an important issue to address in support of mentorship and established a mentee training program within the curriculum. The program teaches needs assessment, goal setting, identification of appropriate learning activities, and reflection skills as an iterative and cyclical process. Learning activities include working with one’s selected mentor (or mentors). These skills are important for lifelong learning and continuing professional development, as well as transition to practice.
POSSIBLE PROSPECTS OF ECOLOGICAL AND ECONOMIC SITUATION IN THE TERRITORY OF PACIFIC RUSSIA
Authors: Stepanko
Published: August 2021

Economics and ecology, being one of the main components of a complex territorial economic system, are characterized by close interdependence and interdependence. Changes in the economy entail transformational processes in nature management and changes in the ecological state. And depending on how well these components and their connections are balanced, the further socio-economic development of the territory and the living conditions of the population will depend. Based on the analysis of the ecological and economic situation in the regions that make up Paciﬁ c Russia, the main factors forming the environmental situation in them are identiﬁ ed, and a possible environmental component is considered when developing the natural resource potential and implementing major investment projects in the Paciﬁ c Of Russia.
Laboratory technique and methods of expressing the concentration of solutions
Authors: Rogatykh Stanislav Valentinovich , Golovina Tatiana Petrovna
Published: August 2021

The manual is intended for laboratory studies and the organization of independent research work of students of biological and environmental directions of universities. Can be used by teachers and students of educational institutions.

Recommended for publication by the educational and methodological council of the Vitus Bering Kamchatka State University for students studying in the direction of training 06.03.01 "Biology".
Optimizing the Parameters of Sliding Mode Controllers for Stepper Motor through Simulink Response Optimizer Application
Authors: Sadek Mahmoud Magdi , H. AlRamadhan Ali
Published: August 2021

This paper will focus on optimizing parameters of sliding mode controllers (SMC) for hybrid stepper motor models simulated in Matlab/Simulink. The main objective is to achieve a smooth transient and robust, steady-state to track reference rotor position when the stepper motor is subjected to load disturbances. Two different structures of SMC controllers will be studied, which are based on the flat system concept that is applicable to the stepper motor model. The hassle to determine controller parameters will be optimized using the Simulink Response Optimizer application.  The performance of the controllers will be evaluated by considering load torque and variation in the model parameters. Although the results showed that an open-loop controller could move the rotor to the desired position, however, the transient response had undesired oscillations before the output settled at the steady state. The response was improved by optimizing SMC controllers’ parameters to meet the desire step response requirement. Despite both SMC methods have successfully tracked the reference, there are some challenges to deal with each method in regard to the state measurements, the number of optimized controllers’ parameters, and the scattering of control inputs.
Empirical analysis of attitudes to new forms of employment in the pandemic era
Authors: Naberushkina Elmira
Published: August 2021

The COVID-19 pandemic has led to major changes in the functioning of social systems, including employment. This raises the need for a comprehensive study of the ongoing processes and forecasting their consequences. The subject of this article is the analysis of the remote form of employment scaled due to the 2020-2021 pandemic. The object of the study was the attitude of working Muscovites to the new form of employment. The use of qualitative and quantitative research methodology made it possible to clarify the ambiguity of remote work, to identify changes in the family and professional field that have occurred as a result of the transfer of labor functions to a remote format. The built-in indicators made it possible to assess the attitude towards distance employment, identify changes that have occurred between relatives and colleagues, assess the prospects for the further use of distance technologies, and speak out about the acceptability of remote work.
The results showed that, in general, remote work as a new form of employment is accepted, and is considered by many as very convenient for the metropolitan metropolis in connection with significant savings in time and money spent on the road. Most have no plans to move from the metropolis while maintaining distance employment, since Moscow is labeled not only as a place of work and income, but also as a city of opportunities for leisure, development and life. The possibility of moving is considered only in connection with an increase in wages, career growth; in connection with personal and family reasons or with moving from Russia in general, as well as if the situation in small towns is favorable.
The results presented in this article may be of interest to researchers dealing with the transformation of the labor market and employment, as well as to specialists from government bodies who are involved in the implementation of state employment policy and in the development system of urban agglomerations.
The basic structure, typology, functions, revenues and expenditure of the tertiary sector in the U.S.
Authors: Shlihter Alexey
Published: August 2021

The article attempts to present the multifaceted world of the American tertiary sector; explains the need for using non-market instruments in order to provide public goods; clarifies relations and connections of the tertiary sector organizations with the state and business. The definition of the tertiary sector as forming a horizontal multidimensional, multi-vector, growing and self-organizing system of naturally developing relations between people is given. The system is seen as a collection of communities emerging and functioning at the national and local levels, with one of their main tasks being to provide people with the opportunity to communicate and make important decisions, based on similar practical and spiritual interests.
PERSEPSI MASYARAKAT TERHADAP PENGELOLAAN TAMAN WISATA ALAM TELAGA WARNA KABUPATEN BOGOR, PROVINSI JAWA BARAT
Authors: Suherlan Elka Pebriyandi , Salampessy Messalina L. , Rusli Abdul Rahman
Published: August 2021

The existency of conservation areas and surrounding communities is an inseparable part. The interaction of the people with the forest area is influenced by the perception of local community surrounding the forest. This study was aimed to describe the community's knowledge about the Nature Tourism Park (NTP) and community perceptions of the management of NTP. This research was conducted in May - June 2020 in Tugu Utara Village, Cisarua District, Bogor. Data obtained through field observations, interviews, questionnaires and literature studies, and were analyzed quantitatively by describing the percentage of people's understanding of the management of NTP. The results show that the community has high knowledge of the NTP concept, function and role of NTP, NTP management and community participation in NTP management and the community has a good level of understanding about the existence and role and function of NTP for the community, a good understanding of the active role of the community. in the management of TWA and the importance of building cooperation in the management of NTP. Therefore, it is necessary to make efforts to increase the role and participation of the local community in the effort to utilize the potential of the area and its preservation.
MEMAKSIMALKAN DAYA TARIK ALAMIAH SEBAGAI STRATEGI PENGEMBANGAN WISATA ALAM GUNUNG PINANG SERANG BANTEN
Authors: Suliyanti Suliyanti , Hasibuan Ratna Sari , Cita Ken Dara
Published: August 2021

Gunung Pinang Nature Tourism is located in Kramatwatu District, Serang Regency. This nature tourism is managed by Perum Perhutani. This tour offers tourist attractions in the form of nature photos with the beauty background of Serang Regency.A variety of photo attractions are offered in this nature tourism. Affordable ticket prices make this natural tourism as one of nature tourism in Serang District. This research was conducted to determine the attraction of tourist attractions in Gunung Pinang natural Tourism, the method of study used is the assessment of ODTWA in the form of scoring or ranking on the potential of Gunung Pinang natural tourism based on guidelines according to Dirjen PHKA 2003 and SWOT analysis.The Data that is examined is the attraction of tourism objects, accessibility, environmental conditions, accommodation, supporting facilities and infrastructure, availability of clean water and safety.Then formulate the internal and external factors of the SWOT matrix as a SWOT analysis. Based on the results of the research of Gunung Pinang nature Tourism has a percentage of ODTWA assessment of 81.63%, so it is worth to be developed, then based on the SWOT analysis that has been done then it is known that the total score of EFI = 1.22 and the total value of EFE = 0.95 score appears that the chosen strategy is in the Quadrant I (one), which is an aggressive strategy. This position that was absolutely strategic ecotourism the further investigated in the the ecotourism program. This is clearly for the purpose of compelling more visitors to Gunung Pinang Natural Tourism.
Sistem refrigerasi CO2: solusi alternatif sistem refrigerasi ramah lingkungan untuk aplikasi supermarket
Authors:   Politeknik Negeri Bali, Suamir I Nyoman , Wibolo Achmad ,   Politeknik Negeri Bali, Subagia I Wayan Adi ,   Politeknik Negeri Bali, Idrayana I Putu Eka ,   Politeknik Negeri Bali, Putra Anak Agung Ngurah Dwi Indra ,   Politeknik Negeri Bali
Published: August 2021

Sistem refrigerasi berbasis refrigeran CO2 sejak lingkungan tiga dekade menjadi solusi alternatif untuk sistem refrigerasi ramah lingkungan untuk aplikasi di supermarket. Paper ini bertujuan untuk mengevaluasi potensi penerapan berbagai sistem refrigerasi CO2 yang pada tingkat awal implementasinya dalam sistem refrigerasi supermarket masih menghadapi beberapa hambatan. Keselamatan dan teknologi dianggap sebagai salah satu penghalang terpenting yang diikuti oleh regulasi, pelatihan, dan ketersediaan komponen. Beberapa negara mungkin masih menghadapi berbagai tantangan seperti kebijakan dan situasi mengenai fase keluar dari ODP dan refrigerans dengan emisi yang tinggi. Sehubungan dengan keamanan lokal, CO2 adalah alternatif yang sangat baik di antara sistem refrigerasi alami, terutama dalam aplikasi refrigerasi supermarket. CO2 berada di grup A1 dari klasifikasi keselamatan yang tidak mudah terbakar atau beracun. Salah satu sistem refrigerasi CO2 yang banyak diminati adalah sistem transkritikalal. Sistem refrigerasi CO2 transkritikalal telah mendapatkan tingkat kematangan teknologi, sehingga teknologi bebas HFC saat ini dapat memberikan solusi ramah lingkungan untuk sektor refrigerasi komersial khususnya supermarket.
Analisa kinerja cooling tower tipe counter flow induced draft
Authors:   Politeknik Negeri Bali, Midiani Luh Putu Ike , Temaja I Wayan ,   Politeknik Negeri Bali, Adnyana I Putu Merta ,   Politeknik Negeri Bali, Dwiana I Kadek ,   Politeknik Negeri Bali, Yoga I Made Prasana ,   Politeknik Negeri Bali
Published: August 2021

Paper ini bertujuan untuk memberikan wawasan tentang kinerja menara pendingin. Menara pendingin yang diamati adalah menara pendingin tipe counterflow induced draft. Analisa dilakukan untuk mengetahui pengaruh temperatur lingkungan terhadap kinerja menara pendingin, kerugian energi dan alternatif perbaikan. Metode yang digunakan adalah pengumpulan data operasional, pengolahan data dan selanjutnya menganalisa hasil pengolahan data. Parameter kinerja menara pendingin yang dicari meliputi range, approach, efektifitas, kapasitas pendinginan. Kerugian yang terjadi selama operasional menara pendingin seperti kerugian penguapan, blow down dan drift juga dihitung. Hasil analisa kinerja menara pendingin menyatakan bahwa efektivitas menara pendingin tinggi karena laju penguapan yang tinggi dan lebih sedikit kehilangan karena penguapan, blowdown, dan drift. Laju penguapan yang tinggi dapat terjadi karena jumlah uap air yang rendah di udara dan menunjukkan kelembaban relatif yang rendah, sehingga penurunan temperatur wet bulb akan besar.
Teknologi refrigerasi ramah lingkungan menggunakan energi matahari menuju green campus Politeknik Negeri Bali
Authors:   Politeknik Negeri Bali, Rasta I Made , Winarta Adi ,   Politeknik Negeri Bali, Sunu Putu Wijaya ,   Politeknik Negeri Bali, Subagia I Wayan Adi ,   Politeknik Negeri Bali, Puja I Gusti Ketut ,   Politeknik Negeri Bali
Published: August 2021

Meningkatnya permintaan energi global, menipisnya sumber daya energi fosil, dan perubahan iklim adalah kenyataan yang tidak dapat disangkal. Sistem refrigerasi jenis chest freezer adalah salah satu peralatan elektronik yang banyak digunakan di rumah serta industri. Penggunaan sistem refrigerasi terus meningkat, yang menegaskan bahwa sejumlah besar konsumsi energi diperlukan untuk pengoperasiannya. Sistem refrigerasi konvensional yang digerakkan oleh jaringan listrik (power grid) adalah produk utama di pasar global. Selain itu, penggunaan refrigerasi elektrik meningkatkan tekanan listrik pada waktu beban puncak. Untuk mengurangi kontradiksi antara permintaan dan pasokan listrik, lebih banyak pembangkit listrik termal telah dibangun, dan lebih banyak bahan bakar fosil telah dibakar dalam beberapa dekade terakhir. Oleh karena itu, perubahan baru harus dilakukan untuk mengurangi dan mengoptimalkan penggunaan energi fosil. Pengembangan teknologi dengan sumber energi terbarukan menjadi tindakan istimewa untuk pengurangan konsumsi energi dan pencarian efisiensi energi yang lebih baik. Makalah ini menyajikan pemanfaatan energi matahari (solar energy) sebagai salah satu pendekatan untuk mengurangi atau menggantikan sebagian konsumsi energi sistem refrigerasi konvensional di bawah tekanan perlindungan lingkungan. Hasil studi menunjukkan dengan sistem Photovoltaik (PV), energi panas matahari dapat dimanfaatkan untuk memenuhi kebutuhan energi sistem refrigerasi jenis chest freezer baik untuk keperluan rumah tangga maupun industri.
Droplet digital polymerase chain reaction for detection and quantification of cell-free DNA TP53 target somatic mutations in oral cancer
Authors: Lin Li-Han , Cheng Hui-Wen , Liu Chung-Ji
Published: August 2021

BACKGROUND: TP53 mutation is a driver mutation of oral carcinogenesis. This study investigated cancerous and cell-free DNA (cfDNA) in patients with oral squamous cell carcinoma (OSCC) to detect the target hotspot somatic mutation of TP53. OBJECTIVE: TP53 target hotspot mutations were determined in surgically resected primary tumor samples from 107 OSCC patients. METHODS: Cancerous and cfDNA samples were examined for mutations through droplet digital polymerase chain reaction (ddPCR) by using mutation-specific assays. The ddPCR results were evaluated alongside clinicopathological data. RESULTS: In total, 23 cases had target TP53 mutations in varying degrees. We found that OSCC had relatively low cfDNA shedding, and mutations were at low allele frequencies. Of these 23 cases, 13 had target TP53 mutations in their corresponding cfDNA. Target somatic mutations in cancerous DNA and cfDNA are related to cervical lymph node metastasis. The cfDNA concentration is related to primary tumor size, lymph node metastasis, and OSCC stage. CONCLUSIONS: Our results show that the detection of TP53 target somatic mutations in OSCC patients by using ddPCR is technically feasible. Low levels of cfDNA may produce different results between cancerous tissue and cfDNA analyses. Future research on cfDNA may quantify diagnostic biomarkers in the surveillance of OSCC patients.
CEUS detection of biliary ischaemia during the first 4 weeks after liver transplantation predicts non-anastomotic biliary stricture
Authors: Zheng Bo-wen , Yi Shu-hong , Wu Tao , Liao Mei , Zhang Ying-cai , Yuan Lian-xiong , Zheng Rong-qin , Yang Yang , Ren Jie
Published: August 2021

BACKGROUND: Biliary ischaemia is an important factor in the pathogenesis of non-anastomotic biliary stricture (NAS) after liver transplantation (LT). Contrast-enhanced ultrasound (CEUS) can be used to detect biliary ischaemia, but no study has examined the utility of CEUS in predicting NAS. OBJECTIVE: To evaluate whether repeated CEUS as a non-invasive method of biliary ischaemia can identify NAS. METHODS: Consecutive LT patients who underwent CEUS examinations at 1–4 weeks after LT from September 2012 to December 2015 at our institution were included. The CEUS images and clinical data were analysed. RESULTS: Among 116 eligible LT patients, 39 (33.6%) were diagnosed with NAS within 1 year after LT. The patients with NAS had a significantly higher CEUS score at weeks 2–4 (all P < 0.05) and a higher slope of CEUS score progression (0.480 vs –0.044, P < 0.001). The accuracy of CEUS in identifying NAS improved over time after LT, reaching its maximum at week 4, with a sensitivity of 66.7%, a specificity of 87.9%, a positive predictive value (PPV) of 75.9%, a negative predictive value (NPV) of 82.3%, and an accuracy of 80.2%in the full cohort when a CEUS score≥3 was used as the cut-off. Multivariate analysis identified gamma-glutamyl transpeptidase (GGT), alanine transaminase (ALT) and the CEUS score at week 4 as independent predictors of NAS. In the task of identifying NAS, an NAS score combining the above 3 variables at week 4 showed areas under the receiver operating characteristic curve of 0.88 (95%CI, 0.78–0.99) in the estimation group (n = 60) and 0.82 (95%CI, 0.69–0.96) in the validation group (n = 56). An NAS score cut-off of 0.396 identified 87.2%of NAS cases in the estimation group, with a PPV of 93.3%; and 75.0%of NAS cases in the validation group, with a PPV of 58.8%. CONCLUSIONS: CEUS examination during the first 4 weeks is useful in assessing the risk of NAS within 1 year after LT. In particular, an NAS score combining the CEUS score, GGT level, and ALT level at week 4 can be used to accurately predict the risk of NAS in LT patients.
An efficient hybrid method for analyzing the coupling response of microstrip antenna system
Authors: Hu Xiao , Qiu Yang , Xu Qing-Lin , Tian Jin
Published: August 2021

This paper presents an efficient hybrid method consisting of Lorentz reciprocity theorem, finite-difference-time-domain (FDTD) method, thin wire model, transmission line (TL) equations and transfer impedance model, which can be utilized to analyze the system-level transient responses of the microstrip antenna system with antenna, metallic enclosures, braided shielded cable, and lumped element, when illuminated by an external electromagnetic pulse (EMP). In order to avoid over-fine mesh generation and repeated modeling of the antenna in multiple simulations, Lorentz reciprocity theorem is employed to extract an equivalent source model of antenna coupling, thereby improving the computational efficiency. Then, the transfer impedance model and thin wire model are incorporated into the FDTD-TL method efficiently to deal with the back-door coupling through the shielding layer of feeding coaxial cable. Finally, the hybrid FDTD method combined with the extracted equivalent source of antenna coupling is utilized to solve the coupling responses of the whole antenna system. The results of numerical simulation are verified by comparing with the simulation results of CST CS. Then, considering the influence of different incident conditions of external EMP, the characteristics of the coupling response of the system are analyzed. The obtained coupling response information demonstrate that the proposed method is available for further designing electromagnetic protection of the inner circuits of the microstrip antenna system against the impact of external EMP.
Effects of temperature gradient on the granite’s mechanical properties
Authors: Pei Jinyong , He Huagang , Hu Dongtao , Lv Shanke , Wang Jing , Tang Qi
Published: August 2021

Temperature gradient significantly affects the production of surrounding rock stress in mining engineering. The mechanics and deformation characteristics of the rock will change under the temperature gradient, thereby increasing the probability of accidents in the roadway. This paper conducts uniaxial compression tests on granite at different temperatures from room temperature to 250∘C, and analyzes in detail the changes in the stress-strain curve, peak stress, peak strain and tangent modulus of granite under high temperature and different temperature gradient conditions. The results of this study are as follows: (1) Under high temperature conditions, the granite’s peak stress and tangent elastic modulus increased with temperature from 17 to 100∘C, then decreased from 100∘C to 250∘C, whereas the granite’s peak strain increased steadily with increasing temperature; (2) under temperature gradient, the granite’s peak stress and tangent modulus first decreased and then increased with increasing temperature gradient, while the granite’s peak strain first decreased and then increased at 100∘C, but first increased and then decreased from 150∘C to 250∘C.
A Chinese automatic question answering technique based on semantic similarity
Authors: Yang Weijie , Ma Hong
Published: August 2021

In this paper, for the Chinese automatic question answering technology in open domain, in addition to considering the traditional association between questions and questions, the correlation between questions and answers is added. The cosine similarity between questions and answers is used as the semantic similarity between them. A bi-directional long short-term memory network (BiLSTM) is added between the question and question, answer and the answer to seek the association between the contexts. and an attention mechanism is added to make question and answer related. Finally, the experimental verification shows that the accuracy of automatic question answering by the proposed method reaches 70%.
Structural optimization design and mechanical performance analysis of laminated six-ring redundant axial magnetic bearings
Authors: Liu Jingxiang , Fu Jing
Published: August 2021

Targeting at the axial magnetic bearing, a structure of laminated six-ring redundant axial magnetic bearing, which is featured in both high redundancy and low heat, was designed in this paper. Meanwhile, the design criteria of the laminated redundant axial magnetic bearing was proposed, and the theoretical research, numerical simulation and empirical research on the redundancy and electromagnetic force of the laminated redundant axial magnetic bearing were conducted as well in this study.
Neural networks trained with high-dimensional functions approximation data in high-dimensional space
Authors: Zheng Jian , Wang Jianfeng , Chen Yanping , Chen Shuping , Chen Jingjin , Zhong Wenlong , Wu Wenling
Published: August 2021

Neural networks can approximate data because of owning many compact non-linear layers. In high-dimensional space, due to the curse of dimensionality, data distribution becomes sparse, causing that it is difficulty to provide sufficient information. Hence, the task becomes even harder if neural networks approximate data in high-dimensional space. To address this issue, according to the Lipschitz condition, the two deviations, i.e., the deviation of the neural networks trained using high-dimensional functions, and the deviation of high-dimensional functions approximation data, are derived. This purpose of doing this is to improve the ability of approximation high-dimensional space using neural networks. Experimental results show that the neural networks trained using high-dimensional functions outperforms that of using data in the capability of approximation data in high-dimensional space. We find that the neural networks trained using high-dimensional functions more suitable for high-dimensional space than that of using data, so that there is no need to retain sufficient data for neural networks training. Our findings suggests that in high-dimensional space, by tuning hidden layers of neural networks, this is hard to have substantial positive effects on improving precision of approximation data.
Preparation of magnetic methotrexate nanocarrier coated with extracted hydroxyapatite of sea urchin (Echinometra mathaei)
Authors: Rajabiyan Ali , Shakiba Maram Nader , Ghatrami Ebrahim Rajabzadeh , Zarei Ahmady Amanollah
Published: August 2021

New polymer-coated magnetic nanocarrier using magnetic iron oxide nanoparticles coated with chitosan and nanohydroxyapatite extracted from Sea urchin that both have anti-cancer properties showed good ability to Methotrexate (MTX) delivery. Iron oxide nanoparticles and hydroxyapatite prepared by co-precipitation and hydrothermal methods respectively. To stabilize the nanoparticles and optimization of the nanoparticles with hydroxyapatite, 3-chloropropyltrioethoxysilane and chitosan were performed. The water-soluble anticancer drug Methotrexate was selected as the drug model. The drug loading percentage was % 86.66, loading efficiency was % 99.5 and the polydispersity of the nanoparticles was 0.01. The kinetic pattern of drug release is consistent with the Peppas equation and the results of the thermal analysis confirm the stability of the crystalline form of the drug. The FTIR results and FE-SEM images showed that the nanoparticles were successfully prepared and coated and their size ranged from 30 nm to 1.5 μm. The VSM analysis confirms the magnetic properties of the nanoparticles and the magnetic indices for the magnetic nanocarrier and the magnetic nanocarrier carrying MTX are 23 and 19 emu/g–1, respectively. The present study demonstrates the potential of iron oxide nanoparticles for the design of new magnetic nanocarrier and for guiding Methotrexate drug therapy in cancer chemotherapy.
Is botulinum toxin type A more effective and safer than other treatments for the management of lower limb spasticity in children with cerebral palsy? A Cochrane Review summary with commentary
Authors: Kim Heakyung , Kolaski Kat
Published: August 2021

BACKGROUND: Botulinum toxin A (BoNT-A) is a well-accepted treatment for the medical management of spasticity in children with cerebral palsy (CP). OBJECTIVE: To assess the efficacy and safety of BoNT-A compared with other treatment options in managing lower limb spasticity in children with CP. METHODS: A summary of the Cochrane Review update by Blumetti et al. (2019), with comments. RESULTS: This review included 31 randomized controlled trials (1508 participants). Compared with usual care/physiotherapy, the evidence is very uncertain about the effect of BoNT-A on gait, function, ankle joint range of motion (ROM), satisfaction, and ankle spasticity in children with CP. Compared with placebo/sham, BoNT-A probably benefits these same outcomes, although the results for function are contradictory. BoNT-A may not be more effective than serial casting at improving gait, function, ankle ROM and spasticity at any time point. However, it may be more effective than an orthosis at medium-term follow-up for hip ROM and adductor spasticity, but not function. The rate of adverse events with BoNT-A is similar to placebo/sham and serial casting. CONCLUSIONS: Evidence for the effectiveness and safety of BoNT-A for the management of lower limb spasticity in children with CP is uncertain, with better quality evidence available from studies of placebo/sham than non-placebo controls. To produce high-quality evidence, future studies need to improve their methodological quality and increase sample sizes.
Fostering Statistical Literacy in Greece
Authors: Thanopoulos Athanasios C. , Karamichalakou Christina
Published: August 2021

The Hellenic Statistical Authority (ELSTAT), the National Statistical Institute of Greece, as the guarantor of the quality of official statistics in Greece, has been pursuing, since 2016, an ambitious strategy aiming to foster Statistical Literacy, focusing on strengthening ties with citizens in their dual capacity both as providers of data and ultimately as users of statistics, and thus, operate as crucial enablers of a smoothly functioning virtuous circle of official statistics. Objectives include the development of an understanding of basic methodologies and tools used in official statistics, along with the awareness of its institutional foundations and core principles. This critically contributes to the value of official statistics being spread and effectively communicated, making, at the same time, a convincing case for fact-based decision making in the daily lives of the main stakeholders. This article motivates the approach followed in developing a specific strategy on statistical literacy, outlines its philosophy and main objectives and browses through the array of initiatives and actions undertaken over the last five years. In addition, it explores the responsiveness of citizens to these initiatives and the extent to which these initiatives lead to an increased engagement of key targeted stakeholders.