Front Stage Research Articles

Optimal IP Current Controller Design Based on Small Signal Stability for THD Reduction of a High-Power-Density PFC Boost Converter

This paper presents an optimal design for the inner current-control loop of the continuous current conduction mode (CCM) power factor correction (PFC) stage, which can be used as the front stage of the two-stage AC/DC telecom power supply. The conventional single-phase CCM-PFC boost converter is implemented with proportional–integral (PI) controllers in both the voltage and current-control loops to regulate the output DC voltage to the specified value and to ensure the input current follows the input voltage, which offers a converter with a high-power factor (PF) and low current total harmonic distortion (THD). However, due to the slow dynamic response of the PI controller at the zero-crossing point of the input supply current, the input current cannot fully follow the input voltage, which leads to high THD. In this paper, we investigate a digitally controlled PFC converter with an optimally designed inner current-control loop using a doubly-fed control loops integral-proportional (IP) controller to reduce the THD and to offer an input current with a unity PF. For the economic design of a digitally controlled PFC converter, two isolated AC and DC voltage sensors are designed for interfacing with the microcontroller unit (MCU). PSIM software as well as experimental prototype was used to test the converter performance using the proposed designed current controllers and isolated voltage sensors. We achieved a high-power-density, digitally controlled, telecom PFC stage with a power factor more than 99% and THD of about 5.50%.

Instant Personal Branding Calon Legislatif Melalui Instagram

This research aims to analyze the personal branding of M. Yoridho Sinuraya, the legislative candidate for DPRD DKI Jakarta through Instagram. The theory of dramaturgy by Erving Goffman was used to find out personal branding strategy through the employment of the front and backstages of M. Yoridho Sinuraya as a legislative candidate for the Jakarta council (DPRP DKI Jakarta). Based on interviews and observation of Instagram account @sahabatyoridho, it showed that the front stage of M. Yoridho A. Sinuraya had the characteristics of being a friendly, young, pious, and populist man. Meanwhile, the back stage of M. Yoridho A. Sinuraya had characteristics as a young entrepreneur who was lack of interaction with other people and had a semi-formal appearance. The difference between the front and back stages of M. Yoridho A. Sinuraya made him take extra efforts to develop his personal branding, classified as an instant one.

Influence of blade vibration on part-span rotating stall

This paper presents the interaction between blade vibration and part-span rotating stall in a multi-stage high speed compressor. Unsteady aerodynamic and aeroelastic simulations were conducted using URANS CFD. Steady state computations showed short length scale disturbances formed local to the tip of a front stage rotor. Using a full annulus model, these disturbances were shown to coalesce into flow structures rotating around the annulus at approximately 76% of the shaft rotational speed. Natural evolution of the rotating stall did not result in a coherent spatial pattern. Sensitivity studies showed that operating point and tip clearance have significant impact on the developed state of rotating stall. Subsequent analyses carried out with prescribed rotor blade vibration showed a spatial ‘lock-in’ event where the circumferential order of the part-span rotating stall shifted to match that induced by the vibration mode. Moreover, in contrast to its natural form in the absence of vibration, the fully developed rotating stall showed a coherent stall signal. More importantly, it was found that numerical boundary conditions such as mixing plane and sliding planes can significantly influence the outcome of prediction.

Competitiveness Evaluation Methodology for Aviation Industry Sustainability Using Network DEA

The purpose of this study is to develop the methodology to assess the sustainability of the aviation industry based on network data envelopment analysis (DEA) for the assessment of the national aviation industry process productivity. The national aviation industry is classified into the front stage, corresponding to the aviation market, and the behind stage, the ecosystem of the aviation industry from which added value is created. DEA for each stage and network DEA analysis from a system perspective and a process perspective were applied by integrating the two stages. Unlike the results of national productivity assessments based on previous aviation performance, it was found that the productivity varied among countries in each stage, and that the process of creating added value had the most profound effect on the overall sustainability determination of the national aviation industry. This methodology and the results are expected to contribute toward establishing the national policy direction for aviation industry sustainability.

Virtual synchronous motor based-control of Vienna rectifier

Vienna rectifiers are widely used because of their advantages of high power-factor, low voltage stress on the power semiconductor switches, high power density, stable output voltage, low current harmonic content, and good economics. And gradually applied to the front stage AC/DC part of the electric vehicle charger. Traditional Vienna rectifier control methods include double closed-loop control, hysteresis current control, and Sliding mode variable structure control strategy, but all strategies usually regulate DC-Voltage and keep the unity power factor. However, if it is used for the interface part of the electric vehicle charger with frequent load switching, it is necessary not only to ensure the stability of the output voltage and low THD of the current, but also to be able to respond to the fluctuation of the voltage and frequency of the power system and improve the inertia and damping at the interface. Thereby, the stability of the power grid is improved to a certain extent, and fast-charging is ensured while being grid-friendly. Therefore, this paper proposes to apply the virtual synchronous motor control to the Vienna rectifier to improve the adaptability of the grid to the large-scale access of electric vehicles. Build the topology of the Vienna rectifier in simlink and the modulation method using SVPWM to build a complete model on the basis of VSM.

Literasi Media: Sosial Media Sebagai “Front Stage” Baru Personal Image Generasi Digital Native

The purpose of this research is to see how social media creates a new "front stage" for individuals and provides space for these individuals to form and manage their personal images, which tend to be more enjoyable for the digital native generation. This study uses an interpretive paradigm. For interpretive researchers, the goal of social research is to develop an understanding of social life and discover how people construct meaning in natural settings. The implementation of this research produces media literacy, not just an activity that filters out various information that is of no use to its users, positives and more advantages. The conclusion of this research is that Native Digital Generaation is a different group in the stage of searching for identity, and is at the stage of searching for an appropriate role which is expected to receive the appreciation they expect, media literacy is needed as skills not only filter out the negative things of freedom, social media, but furthermore requires the ability to maximize social media space to get positive things and more benefits.

Pengelolaan Kesan Roleplayer K-Pop Melalui Media Sosial Twitter (Studi Dramaturgi Pada Akun Twitter Fandom Di Kota Bandung)

Korean Wave has become a trend in Indonesia, which was started with the high popularity of K-Drama (Korean Drama) back in the 2000s among the Indonesian. Along with the high interest in society, the Korean government kept spreading this Korean wave. In 2011, the Korean music industry, known as K-Pop started to appear and arise a big group; boyband and girlband. Since then, some fandoms or an assemblage of people who puts a high interest in them. The fandom members usually make some activities, one of the activities in the new media is a roleplay.Roleplay is one type of the games on social media played by individuals by acting like him/herself, potraying and imitating the characters that was delivered with how he/she writes status and responds to comments from others. This study focuses on the impression management of K-Pop Roleplayers on social media Twitter with qualitative research methods and dramaturgy approach to the three informants whom are the active Roleplayers on Twitter. Based on the results of the research of K-Pop Roleplayers on social media Twitter to keep and form a positive impression at the front stage is the Timeline. This research was also using the middle stage, Roleplayers perform displacement from Timeline towards more personal media such as direct message and KakaoTalk. As form some of the preparations made by the players at the back stage through was that pre-survey idol character through a variety show on YouTube.

From Supporting Role to Front Stage: Shining a Spotlight on the Programmatic Features and Experiences of Master’s Degree Programs in Criminology and Criminal Justice

While criminology and criminal justice (CCJ) undergraduate programs serve the bulk of our students, much research within the field pays attention to Ph.D. programs and their faculty. Such focus at the polar ends of educational opportunities for those seeking higher education in CCJ leaves a gap in information on master’s degrees in the discipline. This research note describes the programmatic features and experiences of 34 programs and paints a picture of current master’s level education to guide program refinement and development and assist undergraduate students applying to CCJ master’s programs. Findings suggest there are a set of core courses offered across programs that often align with faculty expertise and students have varied culminating experience opportunities. There is also much productivity among graduate students who conduct research and publish and/or present their findings. The paper describes gaps in the literature and discusses suggestions for future research directions.

Challenges for research in higher education: the case of internationalization between the explanandum and the explanans

Abstract A key issue in higher education research is that its nature is shaped by the contexts within which it is produced, in response to agendas that reflect more policy coordination demands than disciplinary concerns. The research problematiques are construed mostly out of the theoretical framework of the disciplines, which, in turn, are diluted within an applied research mode. Internationalisation, quality, and access, for instance, tend to be explored from an implementation and managerial perspective. We convene the criticisms of methodological “isms” to highlight how they shape our conceptualisations and understanding of the transformations in higher education. Under this stance, conceptual narratives on internationalisation of higher education prompted by the Brexit momentum are identified in the study Higher education and Brexit: current European perspectives to bring forward the extent to which internationalisation as a conceptual narrative acts as an explanation of the strategies to address the topic, and what is needed to be itself explained. The paper identifies discursive elements stemming from conceptual narratives convened to approach internationalisation in higher education research, and how they reflect the reification of the state and higher education. By focusing on the Brexit momentum that brought to the front stage the centrality of the nation-states and their competition/cooperation relationship, this paper contributes to call attention to the epistemological and methodological implications of isms.

Post-failure landslide change detection and analysis using optical satellite Sentinel-2 images

Post-failure landslide change detection is crucial for mitigation strategies. However, the methods used to investigate this issue all involve a tough workflow, and the free access Sentinel-2 satellite is underutilized. In this study, we use ten Sentinel-2 optical images to explore the effectiveness of using these images to detect post-landslide changes in the Huangnibazi landslide failure using an easy workflow. We found that the landslide can be qualitatively divided into a startup and acceleration stage, a front and lateral edge expansion stage, and a stabilization stage using time-series true color images. After the normalized difference vegetation index (NDVI) was calculated to identify landslide scars, which were validated using the unmanned aerial vehicle (UAV) orthoimages, we found that the same three change processes identified were also reflected by the landslide scar count change analysis in a quantitative way. Based on the three different stages, a red-green-blue (RGB) composite of the NDVI images was constructed and was found to reflect the different change period of the right and left landslide edges. Most importantly, the changes within a pixel unit were detected using an NDVI RGB composite with cold colors representing a retrogressive landslide mode. All of these findings indicate that the huge potential of the use of Sentinel-2 images in similar applications.

All the world's a stage: How Irish immigrants negotiated life in England in the 1950s/1960s using Goffman's theory of impression management

This paper uses oral history to consider the relative merits of symbolic interactionism in revealing new insights regarding the Irish immigration experience in England during the 1950s and 1960s. Using a variety of rubrics attributed to Canadian sociologist Erving Goffman, I critically examine the nature of identity work performed by Irish men and women when in their new host country. The paper highlights the interface between citizenship and sociocultural identity epitomised by both the use props (corporeal modifications) and the power of sign vehicles, notably Irish accents in shaping the nature of social interactions. The extent to which Goffman neglects sensory driven constructs of identity is highlighted. The way in Irish immigrants negotiated two simultaneous worlds front and back stage in response to the anticipated reaction of the given audience evokes the metaphor of a revolving door of identity fluid and chameleon like in nature. Actions were at times driven the anticipated reactions of others following presentation but then reclaimed elsewhere manifested by front and back stage behaviours. The Irish men and women worked inside and alongside systems of control where their identities were contested, ambiguous, or problematised to create a fluid sense of self (selves).

Carbon-lite collaboration: a virtual visual matrix

In this article we present an example of psychosocial practice – a visual matrix – which attempted to address and embody carbon-lite research methods in the face of global heating. Combining virtual and face-to-face modes of presence and interaction generated insights as well as posing challenges. In the article we explore two ideas through a discussion of ‘interference’ and ‘inclusion/exclusion’. The article extends our understanding of the method to include an awareness of what comes before and after the matrix. By attuning ourselves to its materialities and the practices of care involved in staging a matrix and then digesting its affects and effects, we are alerted to the front and back stage of the method. Following this insight we discuss how a feminist engagement with psychosocial method can be used to connect ‘matters of concern’ such as global heating with situated practices of care that themselves may constitute a carbon-lite methodology. The article is polyvocal, generated by participants through virtual communication in the month following the matrix. It documents an intense, rich and finite period of communication and collaboration. It is an example of ‘writing which offers to us a space where we are able to confront reality in such a way that we live more fully’ (Back, 2007: 160). Questions of mortality and finitude are a motif for the matrix, expressed in a range of ways.

Should interferons take front stage as an essential MS disease-modifying therapy in the era of coronavirus disease 2019?

In the unprecedented pandemic of the coronavirus disease 2019 (COVID-19) along with a limited clinical understanding on effective vaccines and therapies, there are currently many unknowns for patients with autoimmune conditions, such as MS, who require ongoing treatment with immunotherapies. As information is currently lacking on the immune effects of COVID-19 in the context of MS disease-modifying therapies (DMTs), a challenging clinical question being faced by patients and neurologists is whether to continue current DMTs for patients with MS and risk potentially greater morbidity and mortality due to COVID-19 infection vs discontinue DMT therapy and risk MS disease relapse. At this time, we desperately need data to guide which DMTs may best treat both COVID-19 and MS. The authors thank Dr. William Schwartz for critical reading of the manuscript.

FROM THE RELIGIOUS STAGE TO THE POLITICAL STAGE: TEUNGKU DAYAH'S POLITICAL COMMUNICATION STUDY IN ACEH

This paper describes the Teungku Dayah political communication model in maintaining the harmony of Muslims in Aceh. Political turmoil in society often creates unrest, as it separates religious and political values. On the other hand politics is actually very instrumental in the development of Islam in Aceh. Teungku Dayah is the main actor and key figure in political development in Aceh. As a public figure, Teungku Dayah has a stake in the mass vote in the regional elections, the president and other political contests. This research is an analysis of the phenomenon of Teungku Dayah's political role in maintaining the harmony of the people. The technique of data collection used was direct observation, and the data were analyzed by describing the actions of Teungku Dayah's political role. The research concludes that Teungku Dayah has its own system and character in guarding Aceh's political development. He uses the Islamic boarding school and the dayah institutionas media for political communication. But the shift in values in instant politics makes Teungku Dayah's political communication power limited to front stage politics. Further research is necessary on political communication in Teungku Dayah, since political communication is a dynamic study, as dynamic as the conditions in Aceh.

Studi Dramaturgi Presentasi Diri Da’i Migran di Kota Bengkulu

This paper aims at descriptively revealing the impression management regarding self-presentation of da’i migran (migrant preachers) in Bengkulu that includes: front stage and back stage within the communication process of everyday social life. This research applies qualitative approach within the tradition of dramaturgy. Data were collected through observation, interview and documentation. Findings reveal that the life of migrant preachers that occur in the front stages are very different with those that happened in the back stages. When he/she is in his/her front stages, a migrant preacher is required to act in a distinct manner to match his/her role such as exemplary role, polite in speaking, appropriate and proper in dressings, and live a humble life. In his/her back stage, a migrant preacher is free from such norms since there are no one to watch him/her. Here, a migrant preacher can live his/her take off his/her social mask and can life more authentically because without having to follow the instructions as she/he has to do in the front stage. Keywords: Da'wah activities, dramaturgy, migrant preachers and self-presentation

KAJIAN KEHIDUPAN SOSIAL PENGEMIS DI KOTA SURAKARTA

<p>The objective of this study is to examine the social life of beggars on the front stage and on the back stage residing in Joyotakan Village, Serengan, Surakarta, by using Dramaturgy Theory by Erving Goffman. This qualitative research uses the naturalistic inquiry method. In addition, the sampling technique uses purposive side and snowball sampling. Furthermore, the research informants taken are those who work as beggars. Data collection uses observation and in-depth interviews. The validity of the data uses triangulation of sources with the former management of Social Study Agency (LSK) Bina Bakat, and the head of the local neighborhood. The data analysis technique uses interactive analysis model from Miles and Huberman.</p><p>The results of the present research show that on the front stage, the actors act as <em>Me</em>, in order to be accepted by the audience. The setting of begging is done on the vital objects of the city such as the Great Mosque, PGS-BTC area, <em>Tugu Lilin</em> area, Jebres Police Station, <em>Matahari Singosaren</em>, <em>Indomaret Tipes</em>, and at Sebelas Maret University (UNS) and campus graduation events, and Surakarta Muhammadiyah University (UMS). In terms of appearance, they wear several attributes in the form of religious attributes (veils and prayer beads), supporting attributes (children, sling bags, plastic cups, and fingers), and general attributes (shirts, negligee, jackets, sandals, and clean clothes). They play sound, gesture, and expression as begging manner.The conclusion of the research is that theoretically the actor will play the role of <em>Me</em> on the front stage. However, in reality, <em>I</em> can also be seen when actors face disturbance in a show. The disturbance is in the form of rejection of the actors' presence; even the actors get a discrediting stigma from the audience, so that <em>I</em> appears as a response to the disorder. In the actors' social life of on the back stage, their human self will appear as <em>I</em>. However, the actors sometimes become <em>Me</em> when they have to take part in social activities that become the norm in society.</p>

ANALISIS MANAJEMEN IMPRESI PENGGEMAR K-POP DALAM MEMANIPULASI DIRI DI SOCIAL NETWORK SITE (SNS)

Various forms of internet products help people to have instant and easy activities, one of them is Social Network Site (SNS). Internet including SNS provides a place for users freedom of expression without having to be bound by rules like in the real world. Instagram as one kind of SNS, provides an opportunity for individuals to create more than one user account. This feature helps user to create an original account (rinsta) and fake account (finsta) that drives self-manipulation. Self-manipulation on real and fake Instagram accounts related to how individuals carry out impression management. Individuals set a good impression on the original account, while showing the true character on the fake account. Self-manipulation on the Internet more affects the psychological state of individuals to emerge different characters in offline, real and fake accounts. This character difference becomes a form of online disinhibition effect. K-Pop fans use variety of media to connect with their idols and fandoms, but they still have a concern of their self-image will be damaged in others people perspectives who are neutral or dislike K-Pop. The advantage of Instagram being able to have more than one account is a way out for K-Pop fans to manipulate themselves. This research was conducted using a qualitative approach with observations on real and fake K-Pop fan accounts, as well as interviews with users. The results of the study show that K-Pop fans use risnta as their front stage and finsta as their background to express their true self.

A Review of Institutional and Developmental Issues in North-East India

Developmental issues of the North-Eastern States of India cannot be studied inisolation without accounting for the varied politico-socio-economic and institutional factors. This study covers a wide range of the socio-political issues and developmental gaps in the North-Eastern Region (NER) of India. It presents a broader picture and gives an understanding of the issues of governance and development prevailing in this region. Many issues pertain to paucity of developmental outcomes, ethnicity, demand for statehood, insurgency, absence of rule of law, corruption and so on, suggesting state’s ineffectiveness and people’s incompetence to take development to the front stage. An effort has also been made to trace the literature that deals with these issues.

Becoming a good nurse - Socialisation of newly employed nurses into the oncological clinic.

To explore newly employed nurses' socialisation in the process of introduction into an oncological clinic from the perspectives of unit managers and newly employed nurses. There are managerial challenges in retaining nurses at workplaces. The way in which nurses are socialised into their work is important for their job satisfaction and retainment. Qualitative, semi-structured interviews with seven nurses and two unit managers, and written introductory material. Thematic analyses were made, inspired by Goffman's concepts of social interaction, back stage, front stage and roles. SRQR checklist was used. Unit managers created the framework for socialising newly employed nurses through written introductory guidelines and assignments of supervisors as mainstream role models. Newly employed nurses were socialised gradually through mirroring their supervisors in their role as nurse. Front stage, patients often functioned as objects for newly employed nurses' training. Back stage, patients often functioned as communication objects for all professionals. Newly employed nurses, who also demand roles such as transformer, boss, coordinator, prompter and friend, were socialised into the role of assistant to the doctor. Medical rounds functioned as a socialisatorin this process. The allocated supervisors were role models in socialising newly employed nurses into an oncological clinic and its culture. Nurses were socialised into an understanding of care as a biomedical orientation, in which medicine had a higher value than care in the existing knowledge hierarchy at the oncological clinic. This might have implications for who applies for and stays in the job. Increased awareness of the importance of socialisation of nurses into the clinic during the introduction process. Re-thinking nurses' independent functions and patient perspectives in introduction of newly employed nurses to maintain and develop nursing as an independent profession.

Penjor Sebagai Simbol Pencitraan Diri Umat Hindu di Kota Mataram

In contemporary development, the penjor is increasingly being used both as a means of religious rituals and as a profane means. This research focuses on 3 questions 1). What is the process of the emergence of penjor in the city of Mataram? 2). What are the types, functions, and meanings of penjor in the city of Mataram? 3). How is penjor a symbol of the self-image of Hindus in the city of Mataram? This study uses a qualitative descriptive approach that emphasizes the interpretation of denotative and connotative meanings by using the theory of symbolic and semiotic interactionism. Data collection techniques by observation, interview, literature study, and documentation. The results of the analysis include: 1) The appearance of penjor in the city of Mataram began with the history of the attack of the Karangasem kingdom to Lombok. The increasingly safe situation of Lombok encourages the transfer of the Karangasem community to Lombok which carries Balinese Hindu traditions, including penjor, 2) Penjor is divided into 2 types namely ceremonial penjor and ornamental penjor. Penjor ceremony is made from bamboo with curved edges, the trunk is decorated with Ambu (young palm leaves) or Busung (young coconut leaves) filled with accessories. Penjor ceremony functioned as a means of religious rituals (god yadnya) and Manusa yadnya. The meaning of penjor symbolizes the mountain and its contents where the gods come from, as a form of expression of gratitude for the gift given by God and the celebration of Galungan. The commodification of penjor in the city of Mataram is still in a standard form but has begun to use a combination of natural and synthetic ingredients. 3) Penjor is a symbol of the self-image of Hindus, showing internal solidarity with other Hindus and externally to present the front stage as a Hindu that refers to the aesthetic and artistic values ​​of religious ritual symbols that contain the values ​​of the Satyam, Siwam, Sundaram.