bluuebunny/crossref_metadata_2025 huggingface dataset:
Office of Strategy Management in the Public Sector
Authors: Rashid Fairul Rizal Haji
Published: June 2022

Office of Strategy Management (OSM) is an important agency that is expected to coordinate strategy implementation process between the corporate and departmental level (Kaplan and Norton, 2005). Over the years, there have been increasing studies reported in the literature on the development and implementation aspect of the strategies embarked in the public sector domain. However, to date little has been reported in the literature on how the OSM is holding on in the strategy implementation phase in the public sector setting, thus, this study intends to understand the perceived roles undertaken by OSM and the meanings of its existence in strategy implementation process in the public sector environment. Hence, it is hopeful that, this research could shed light on the roles performed by the OSM and find ways of strengthening the Office further in the public sector. A qualitative case study approach on the OSM of a government ministry in Brunei is selected for this research project. The studied ministry is purposely chosen because it is one of the earliest adopters of Performance Management System via Balanced Scorecard (BSC) approach. The primary instrument used in this research is face-to-face interviews. The interviewees comprise of departmental officers across the ministry including officers from the OSM. Documentation analysis was also deployed that complement main research instrument deployed. The main findings captured are cross-validated among interviewees and research instruments so as to verify their exact meanings. Finally, the emerging theoretical development is further clarified and confirmed by telling the storyline to the later interviewees.

Keywords: Office of Strategy Management; Strategy Management; Performance Management; Public sector; South East Asia.
Longitudinal mode control in long cavity VCSELs with a curved mirror
Authors: Kearns Jared A. , Hamaguchi Tatsushi , Hayashi Kentaro , Ohara Maho , Makino Tomohiro , Ito Maiko , Kobayashi Noriko , Jyoukawa Tatsurou , Nakayama Eiji , Nagane Shoetsu , Sato Koichi , Nakamura Yuki , Hoshina Yukio , Koda Rintaro , Futagawa Noriyuki
Published: June 2022

A single cavity filtering mirror with a highly varying reflectivity spectrum was used to demonstrate a single longitudinal mode operation for a VCSEL with a ∼25 μm cavity length. The 443.5 nm lasing peak had an SMSR of 42 dB at 9 mA, 70 kA cm−2. Increasing the number of DBR pairs between the VCSEL and filtering mirror cavity reduced the simulated optical standing wave in the mirror cavity by 57% and experimentally gave a 42% increase in the slope efficiency to achieve 2.56 mW at 7 mA from a device with a 4 μm aperture with a single longitudinal mode.
A Critical analysis of Non-ideal Quasi Z Source Inverter considering with parasitic resistances
Authors:   Research Scholar, Department of EEE, Jawaharlal Nehru Technological University, Anantapur, India., N* Satyavani. , Basha Dr.C.Kamal ,   Professor, Department of EEE, Madanapalle Institute of Technology and Science, Madanapalle, India., Visali Dr.N. ,   Principal, Department of EEE, JNTUA College of engineering,Kalikiri,India
Published: June 2022

This paper describes the perfect small signal mathematical modeling of a non-ideal quasi-Z-source inverter (q-ZSI) by considering the parasitic resistances of capacitors and inductors. In this work, the detailed transfer function model of the system is derived mathematically by using state-space averaging method under continuous conduction mode (CCM). The deduced transfer function model exhibits the non-minimum phase of a system in the capacitor voltage-to-control transfer function due to the presence of Right-Half-Plane (RHP) zeros. The RHP zeros could impose a limitation on the controller design. Therefore, the effect of parasitic resistances of passive elements on system dynamics is analyzed with the frequency response plots such as Bode plot, Root locus and Pole-Zero maps. This analysis helps to frame the guidelines for selecting the pertinent values of passive components and their parasitic resistances. The system stability and dynamic response of the presented small signal model are compared with circuit model and validated in Mat lab/Simulink environment
Hybrid DFIG Driven Wind Turbine – Grid Systems Modeling and Control for Reliable Source
Authors:   Department of Electrical Engineering, Faculty of Engineering, Al-Azhar University, Cairo, Egypt., El-Tawab* Sally , Nassar Ibrahim ,   Department of Electrical Engineering, Faculty of Engineering, Al-Azhar University, Cairo, Egypt., Mehanna Mohammed ,   Department of Electrical Engineering, Faculty of Engineering, Al-Azhar University, Cairo, Egypt.
Published: June 2022

This paper proposes an approach for modeling the wind turbines and designing a control methodology. Look up table of the optimal power is achieved based on maximum power point tracking (MPPT) profile for maximizing system effectiveness. A 5*2 MW and 690 V wind farm connected with IEEE 14 bus network is the suggested system. The wind energy conversion systems (WECS) are associated with the network through Voltage Source Converters (VSC). The doubly-fed induction generator (DFIG) is used, due to its ability to work at multiple operational speeds. DFIG vector control model is used for the system performance validation. Pitch angle control methodology is used for regulating the mechanical power at high wind velocity. The controller dynamic range for both wide speed changes and line faults is significantly achieved. An acceptable output power is obtained using this system for wide speed range. The MATLAB/Simulink software is used to construct a model of wind farm and the utilized public network.
ARTESANATOS
Authors: Vieira Irlaine Rodrigues , Oliveira Jefferson Soares de , Santos Kelly Polyana Pereira dos , Silva Geisiane Oliveira , Vieira Fábio José , Barros Roseli Farias Melo de
Published: June 2022

O objetivo do presente trabalho foi investigar quais artesanatos estão sendo produzidos e vendidos nos principais destinos turísticos da Região dos Lençóis Maranhenses, Nordeste brasileiro. Trata-se de um estudo exploratório-descritivo, realizado mediante entrevistas aos artesãos das comunidades que abastecem as associações de artesão da Região dos Lençóis Maranhenses e levantamento in loco de quais artesanatos são vendidos. Verificou-se que os artesãos coletam as plantas na região para produzir artesanatos para o uso próprio e para vender para os turistas. A principal planta utilizada é o buriti (Mauritia flexuosa L.f.). Das folhas da palmeira é extraída a fibra para confeccionar enfeites, brinquedos e utensílios domésticos. Os artesanatos estão inseridos na rotina e na cultura dos moradores dos municípios avaliados. A venda do artesanato traz renda e insere os artesãos em uma atividade que permite conciliar a manutenção da cultura e a obtenção de renda, contribuindo para a sustentabilidade cultural do turismo na Região dos Lençóis Maranhenses.
Unification of gravitation and electromagnetic force (Third Portion)
Authors: Zheng shengming Physicist
Published: June 2022

 According to new discovery of law of moving photon does create force, we can know the reason why the photon become to electron-positron pair and can get that the elementary particle in Nature is photon, from this we can know the basic composition of matter is photon, in other words: the matter of producing gravitation and electromagnetic force is based on the same matter: photon. Meanwhile here show the Millikan's elementary charge is not universal law, reveal the essence of matter wave is due to force. 
FSSA: Efficient 3-Round Secure Aggregation for Privacy-Preserving Federated Learning
Authors: Luo Fucai
Published: June 2022

Federated learning (FL) allows a large number of clients to collaboratively train machine learning (ML) models by sending only their local gradients to a central server for aggregation in each training iteration, without sending their raw training data.  This paper proposes a 3-round secure aggregation protocol, that is effificient in terms of computation and communication, and resilient to client dropouts.
PERANCANGAN SISTEM MONITORING KECEPATAN KENDARAAN DI BANDARA BERBASIS GPS DENGAN FITUR GEOFENCE DAN WIRELESS
Authors: Asardin La Ode Muhammad , Kasrani Mayda Waruni , Saiful Rahman Aswadul Fitri
Published: June 2022

Dalam dunia robotika khususnya bagi pengguna NodeMcu ESP 8266 maka pastinya menggunakan software Arduino IDE dalam programannya. Maka dari itu teknologi yang dikembangkan dalam penulisan ini membantu dalam menghitung kecepatan kendaraan. Dihubungkan melalui android yang akan memonitoring suatu kendaraan tersebut, system monitoring ini bekerja membaca kecepatan kendaraan yang dimana ketika kendaraan melakukan pelanggaran maka kecepatan akan di monitoring melalui Smartphone Android dan buzzer dalam system ini sebagai alarm pengingat di kendaraan dimana ketika kendaraan melaju di kecepatan 25 km/jam alarm akan memberitahukan bahwa kendaraan telah melampaui batas yang ditentukan. alarm ini bekerja ketika sebelum 25 km/jam kecepatan alarm memberitahukan melalui bunyi yang sangat pelan tetapi ketika melebihi dari 25 km/jam alarm berbunyi nyaring. Dan juga ketika melewati pembatas lokasi yang dimana ketika kendaraan berada di luar batas yang di tentukan maka kecepatan kendaraan tidak bisa di monitoring malalui system tetapi jika kendaraan masuk lagi di area yg di tentukan system akan dapat memonitoring kecepatan kendaraan  lagi.
PERANCANGAN SISTEM PENGENDALIAN KECERAHAN LAMPU UTAMA PADA MOBIL BERBASIS ARDUINO UNO
Authors: Kasrani Mayda Waruni , B A. Asni , Putra Agi Setia
Published: June 2022

Intisari— Pada penelitian ini di  lakukan perancangan sebuah sistem pengendali kecerahan lampu utama pada mobil berbasis Arduino Uno. Tujuan dari sistem ini adalah membuat dan merancang sistem otomatisasi yang dapat mengendalikan kecerahan lampu utama pada mobil berdasarkan parameter keadaan di sekitar yang di lalui kendaraan tersebut. Dengan sistem ini diharapkan dapat lebih mengoptimalkan penggunaan daya pada baterai mobil.  Dengan alasan tersebut maka di gunakanlah metode Fuzzy Logic untuk pengambilan keputusan. Penggunaan metode ini karena solusi dari kondisi-kondisi yang terjadi dalam berkendara dapat di parameterkan menggunakan metode Fuzzy. Masukan dari metode ini adalah tingkat kecerahan cahaya yang di baca oleh sensor BH1750 dan jarak kendaraan lain yang berada di depannya di baca oleh sensor HCSR04. Parameter jarak dan kecerahan cahaya tersebutlah yang di gunakan peneulis sebagai penentu fuzzy rule dari sistem ini. Dimana hasil pembacaan kedua sensor tersebut akan mempengaruhi nilai PWM Out dari Arduino tersebut. Dan perubahan nilai PWM tersebut akan berpengaruh terhadap tingkat kecerahan lampu utama mobil tersebut. Hasil dari dari pengontrolan kecerahan cahaya ini cukup efektif dalam menjaga efisiensi tegangan. Pada kondisi Low-Beam tegangan rata-rata 1,6 Volt, Pada kondisi Med-Beam 4,9 Volt, dan pada kondisi High-Beam 8,6 Volt.
Family Goiter at the Hospital of Sikasso (Mali) About 4 Cases
Authors: A Diallo , B Traoré , M Diassana , B Coulibaly M , M Sacko , A Maïga , A BAH. , S Traoré A , A Koné , L Touré , T Traoré , S Traoré , O Dembélé , A Cissouma , M Konaté , M Kanté , A Togo.
Published: June 2022

Goiter is the most common endocrine pathology in the world [2]. Its medical treatment is based on hormone therapy, iodotherapy and its surgical treatment is based on thyroidectomy. Familial goiter appeared to be more common in the gotrigenic regions of Europe, rarer in North America. In Africa, particularly in Mali, there have been few studies on familial goiter. The purpose of this study was to report 4 cases of goiter in the same siblings with a history of goiter in the mother and paternal grandmother to review the literature.
The Contribution of Thoracic Epidural Analgesia in Major Urological Surgery
Authors: Naila Boukoub , Nissrine Tajellijiti , Safaa Zarouf , Youssef El Ouardi , Mohamed KHallouki , Semkaoui MN
Published: June 2022

Introduction: Total cystectomy with urinary diversion is a major urological surgery associated with high perioperative morbidity and mortality. The placement of anesthesia or epidural analgesia (APD) is a very common practice in many surgical procedures, especially in urologic surgery. Our objective was to assess the value of thoracic epidural analgesia in terms of the delay in resumption of transit and its impact on postoperative rehabilitation during heavy urological surgery. Material and method: Retrospective observational study carried out at the IBN TOFAIL Hospital in Marrakech over a period of 2 years. Any patient requiring total cystectomy by laparotomy or laparoscopy for bladder cancer was included. All patients were offered epidural analgesia (“APD” group). The patients who could not benefit from it constituted the control group "T". The descriptive analysis consisted in the calculation of the absolute and relative frequencies for the qualitative variables, and of the positioning and dispersion parameters for the quantitative variables (mean, standard deviation). The normal distribution of the variables was studied by the Kolmogorov-Smirnov test. In bivariate analysis, the comparison of qualitative variables made use of Pearson's Chi2 statistical test and Fisher's test if necessary. Student's t test and Mann Whiteny test. The significance level was retained for a p <0.05. Statistical analysis was performed using SPSS software version 19.0. Results: Sixty three patients spread to the inclusion criteria were collected during the study period, divided into 27 patients in the "control" group and 33 patients in the "APD" group. The most affected age group was that of 35 years and 86 years with an estimated average of 60.25 years ± 10.75. Smoking was a risk factor for bladder cancer in 75% of cases, with an average of 20PY. The most used surgical technique was Bricker in 50% of cases, followed by enlargement enterocystoplasty in 33.3% and then bilateral .........
Facial Soft Tissue Pattern of the Hausa/Fulani Residents in Port Harcourt, Rivers State, Nigeria
Authors: Manuel Bob- , Fubara Ibinabo , Charles Charles , Fortune Abel , Ogoun Ogoun , Richard Timipa
Published: June 2022

Introduction: This research, facial soft tissue pattern of the Hausa-Fulani in Port Harcourt ascertains the soft tissue dimensions of the face in the Hausa-Fulani population resident in Port Harcourt. Methodology: A sample size of 300 subjects was investigated; 270 males and 30 females, using a digital camera to photograph the front and lateral aspects of the face in the normal position and transferring the image to a computer with specialized medical software for its analysis. Results: Sexual dimorphism was observed among the Hausa-Fulani’s. The mean values for the face height, middle face height, lower face height, middle face ratio, lower face ratio and face width for both males and females are; 271.92cm, 131.96cm, 48.39cm 46.68cm, 733.77cm and 124.85cm for males and 439.80cm 114.80cm 46.68cm, 50.20cm, 72.28cm and 125.21cm for females respectively. Conclusion: This research is relevant in cosmetic surgery and trauma management involving the face and while forming a database for the facial index of this ethnic group.
Hubungan Gender, Teknologi Informasi dan Kinerja UMKM Kopi
Authors: Hidayat Riskin , Alliyah Siti
Published: June 2022

Tujuan dari penelitian ini adalah untuk menguji peran teknologi informasi dalam memediasi pengaruh gender terhadap kinerja UMKM Kopi pada pra pandemi dan selama pandemi Covid-19. Obyek penelitian ini adalah UMKM Kopi di Kabupaten Rembang yang berjumlah 35. Kopi di Kabupaten Rembang memiliki kekhasan sendiri yang disebut dengan Kopi Lelet. Metode pengumpulan data dengan metode survei menggunakan kuesioner. Analisis data yang digunakan adalah path analysis. Hasil penelitian menunjukkan bahwa gender, dalam hal ini adalah wirausaha perempuan sebelum terjadi pandemi Covid-19 berpengaruh positif signifikan terhadap kinerja UMKM Kopi, namun pada saat terjadi pandemi Covid-19 gender tidak berpengaruh signifikan dalam meningkatkan kinerja UMKM Kopi. Penelitian ini juga menemukan bahwa teknologi informasi berpengaruh positif signifikan terhadap kinerja UMKM serta mampu memediasi pengaruh gender terhadap kinerja UMKM Kopi. Artinya, teknologi informasi yang digunakan oleh UMKM Kopi memiliki peran yang sangat penting dalam meningatkan kinerja usaha kopi, baik sebelum terjadi pandemi maupun selama terjadi pandemi Covid-19.
Efek Moderasi Kualitas Tata Kelola Perusahaan dari Pengaruh Modal Intelektual dan Pengungkapan Tanggung Jawab Sosial Perusahaan terhadap Kinerja Pasar
Authors: Hariadi Sugeng , Waikabu Indah Sari S
Published: June 2022

– Tujuan dari penelitian ini adalah untuk menganalisis efek moderasi kualitas tata kelola perusahaan dari pengaruh  modal intelektual dan pengungkapan tanggung jawab sosial perusahaan terhadap kinerja pasar. Populasi yang digunakan adalah industri Jasa tahun 2016 - 2019 yang ada pada penilaian IICG (The Indonesian Institute for Corporate Governance). Sampel terkumpul sebanyak 28 data dengan menggunakan metode purposive sampling, dan variabel yang digunakan yaitu  pengungkapan tanggung jawab sosial perusahaan dan modal intelektual sebagai variabel independen, kinerja pasar sebagai variabel dependen dan kualitas tata kelola perusahaan sebagai variabel moderasi. Alat analisis yang digunakan analisis Regresi Moderated Regression Analysis dan regresi linear berganda. Hasil penelitian menunjukkan bahwa 1) Pengungkapan tanggung jawab sosial perusahaan berpengaruh secara positif signifikan  terhadap kinerja pasar. 2) Modal intelektual berpengaruh secara positif signifikan terhadap kinerja pasar. 3) Kualitas tata kelola perusahaan sebagai moderating tidak terbukti memperkuat hubungan antara pengungkapan tanggung jawab sosial perusahaan terhadap kinerja pasar. 4) Kualitas tata kelola perusahaan sebagai moderating mampu memoderasi secara signifikan hubungan antara modal intelektual terhadap kinerja pasar.

 

Kata Kunci: kinerja pasar, modal intelektual, pengungkapan tanggung jawab sosial perusahaan, kualitas tata kelola perusahaan
РЕСУРСНЫЙ ПОТЕНЦИАЛ ТВЕРСКОЙ ОБЛАСТИ ДЛЯ РАЗВИТИЯ ЭТНОГРАФИЧЕСКОГО ТУРИЗМА
Authors: Цыганова А.В. , Виноградова А.С.
Published: June 2022

В статье рассматривается потенциал Тверской области для развития этнотуризма. Характеризуется ресурсная база для популяризации и продвижения карельской культуры в Тверской области в контексте развития внутреннего туризма. Приводятся сведения о значимых событийных мероприятиях этнического характера на территории Тверской области.
СПЕЦИФИКА РАБОТЫ СЛУЖБЫ ПРИЕМА И РАЗМЕЩЕНИЯ (НА ПРИМЕРЕ ГОСТИНИЦЫ «БЕРКАТ» Г. ГРОЗНОГО)
Authors: Эскербиева Л.И.
Published: June 2022

В статье дан анализ деятельности службы приема и размещения в гостинице «Беркат». Данной службе в гостиницах уделяется особое внимание, так как грамотная организация службы приема и размещения позволяет всему гостиничному комплексу работать без нарушения цикла обслуживания гостей. Автор отмечает проблемы службы и методы их решения на примере гостиницы «Беркат».
Kritische Stadtgeographie und geographische Bildung
Authors: Naumann Matthias , Raschke Nicole
Published: June 2022

Die konzeptionellen Ansätze, empirischen Gegenstände und methodischen Zugänge einer kritischen Stadtforschung sind auch für die Geographiedidaktik und Bildungspraxis relevant. Vor dem Hintergrund bildungspolitischer Querschnittaufgaben wie Inklusion, politische Bildung, Bildung für nachhaltige Entwicklung oder Digitalisierung rücken kritisch-reflexive Fähigkeiten, gesellschaftliche Teilhabemöglichkeiten und emanzipatorische Veränderungen in ihren räumlichen Bezügen wie sie in kritisch-stadtgeographischen Debatten verhandelt werden in den Fokus einer emanzipatorischen Geographiedidaktik. Stadt ist in diesem Zusammenhang mehr als bloßer Vermittlungs- und Unterrichtsgegenstand. Städtisches Leben wird maßgeblich durch Bildung bestimmt und Bildung ist ein Schlüssel für gesellschaftliche Veränderungen. Allerdings stehen explizite gegenseitige Bezugnahmen zwischen Kritischer Stadtgeographie und einer emanzipatorischen Geographiedidaktik in der deutschsprachigen Debatte noch am Anfang. Im Beitrag möchten wir am Beispiel eines Konflikts um öffentliche Räume in der Dresdner Neustadt die Chancen, aber auch Herausforderungen einer engeren Verknüpfung zwischen Kritischer Stadtgeographie und Geographiedidaktik diskutieren sowie mögliche konzeptionelle wie auch bildungspraktische Anschlüsse aufzeigen.
Die Unbestimmtheit als Chance
Authors: Siegmund Yvonne
Published: June 2022

Die Planungszeit nicht nur als Zwischenzeit zu begreifen, sondern sie zu gestalten, ist eine wichtige Voraussetzung, um lebensnahe und anpassungsfähige Stadträume zu entwickeln, so die Annahme in diesem Artikel. Das bedeutet, Prozessen eine gewisse Offenheit zuzugestehen und damit verbunden, diverse Eigenzeiten und zeitliche Aspekte (unter anderem Be- und Entschleunigung, Takt und Rhythmus) als prozessuale und sozialräumlich prägende und verändernde Faktoren zu akzeptieren und in Entwicklungsprozesse zu integrieren. In zwei prozessorientierten Kreativquartieren in München und Hamburg wird dargestellt, wie Planende und Kreative seit Jahren kämpfen, kommunizieren, koordinieren – sich synchronisieren –, um Räume und Nutzungen zu bewahren, die sich immerzu verändern.
Von sub\urban zu Pro:Polis?
Authors: Bertram Grischa
Published: June 2022

Die Jubiläumsausgabe von sub\urban widmet sich unter dem Titel „sub\x“ vor allem aktuellen Positionen des Urbanen. Dieser Beitrag hingegen widmet sich vor allem möglichen Alternativen des sub, das die Perspektive der Redaktion auf das Städtische beschreibt. Aus dem Sub wird ein Trans, ein Re, ein Pro, ein Post und ein Ko. Mit jeder Veränderung der Vorsilbe – und damit des Blickwinkels auf das Urbane – tritt ein anderer Aspekt der Stadt und des Städtischen, der Stadtproduktion und -planung sowie nicht zuletzt der Städter_innen zutage. Da die Vorsilben in den vergangenen zehn Jahren mit jeweils eigenen Bedeutungen aufgeladen und parteilich vereinnahmt wurden, sich zugleich aber selbst im kurzen ersten Jahrzehnt von sub\urban gewisse Konjunkturen und Tendenzen erkennen lassen, zeigt sich in der Zusammenschau eine Ambivalenz der Geschichte des Städtischen zwischen 2012 und heute.
Fach, Gesellschaft und Wissenschaft
Authors: Welch Guerra Max
Published: June 2022

Der Aufruf, die Begriffe Stadt und Kritik in das Zentrum einer Debatte zu stellen, bietet die große Chance, uns weit über begriffliche Klärungen unseres gemeinsamen Arbeitsgegenstands hinaus – die ja auch für sich selbst sehr fruchtbar sein können – über die Funktion zu verständigen, die wir in der Gesellschaft ausüben, wenn wir räumliche Planung praktizieren, erforschen und lehren. Da in der Bundesrepublik nicht nur ein großer Bedarf, sondern auch eine beträchtliche Nachfrage nach öffentlicher Planung besteht und die planungsbezogenen Wissenschaften sich eines insgesamt stabilen institutionellen Standes erfreuen, laufen wir Gefahr, die gesellschaftspolitische Legitimation von Berufsfeld und Wissenschaft zu vernachlässigen, sie als gegeben zu behandeln. Wir müssen uns ja kaum rechtfertigen.
Stadt und Kritik
Authors: Wehrheim Jan
Published: June 2022

Stadtsoziologie bedeutet in der deutschen Universitäts- und Wissenschaftslandschaft de facto ganz überwiegend Soziologie in der Stadt. Debatten und Forschungen etwa zu residenzieller Segregation sind wohl der deutlichste Ausdruck davon. Auf Definitionsversuche von Stadt wird meist verzichtet. Auch hier soll nur eine Annäherung erfolgen.
Kritische Stadtforschung: Differenz und Ungleichheiten im Fokus
Authors: Vogelpohl Anne
Published: June 2022

Was kennzeichnet den Gegenstand der Stadtforschung? Was grenzt sie ab von anderen Forschungsfeldern? Diese Fragen mit dem kurzen Hinweis „Stadtforschung ist, was Stadtforscher:innen machen“ abzutun, ist unzufriedenstellend, zum Beispiel wenn es darum gehen soll, Forschungsfragen zu diskutieren oder ein Einführungsbuch herauszugeben. In diesem Diskussionbeitrag werden zwei Antworten auf die Frage „Was ist Stadt?“ vorgestellt: Die erste ist konzeptuell, die zweite versucht, sich der Frage empirisch zu nähern, und unterscheidet sich von Fall zu Fall.
Die Stadt lebt in ihrer Auflösung
Authors: Keil Roger
Published: June 2022

Dieser kurze Debattenbeitrag beantwortet die Fragen der Redaktion nach der Natur der Stadt und der Rolle der Kritik. Der Artikel pladoyiert für eine Öffnung der Stadt zum Städtischen. Was das städtische Leben zur Findung eines Stadtbegriffs beiträgt – anstatt diesen aus der (politischen) Ökonomie des Kapitalismus herzuleiten – weist über die Stadt hinaus, wie wir von Lefebvre (1972) wissen. Verstädterung und verstädterte Gesellschaft deuten auf einen Stadtbegriff, der prozessual ist, über die Stadt als singuläres Ding und Objekt hinwegzeigt. In meiner eigenen Forschungspraxis habe ich den Stadtbegriff immer an dieser Auflösung des Objektes in den Prozess hinein festgemacht.
sub\urban in Zahlen und Bildern
Authors: Redaktion Sub\urban , Berlinski Clara
Published: June 2022

Mit diesem graphisch reich illustrierten Statistikbeitrag, der zum einen auf von der Redaktion erhobenen Daten beruht und zum anderen auf einer großen Leser_innenumfrage, die wir im Frühjahr 2022 durchgeführt haben, eröffnen wir unsere Jubiläumsausgabe. In diesem Beitrag könnt ihr mehr über das Redaktionskollektiv von sub\urban erfahren, über die Beiträge dieser Zeitschrift, aber auch über unsere Leser_innenschaft. Endlich wird sichtbar, wie hoch der Frauenanteil unserer Autor_innen ist, welches unsere beliebteste Rubrik und – ganz wichtig – welches das längste je bei uns erschienene Wort ist. Graphisch gestaltet hat den Beitrag Clara Berlinski, der wir herzlich für die gute Zusammenarbeit danken.
Investigation of time-based pressure control for microfluidics chip design
Authors:   Advanced Research in Mechatronics and Artificial Intelligence, Marmara University, Aydinevler Mah. Idealtepe Yolu No:15 34854 Maltepe/Istanbul/Turkey, Ersoy Sezgin , ATAKOK Gurcan ,   Department of Mechanical Engineering, Faculty of Technology, Marmara University, Aydinevler Mah. Idealtepe Yolu No:15 34854 Maltepe/Istanbul/Turkey, Khorsandi Danial ,   Procare Health, Department of medical affairs, 08860, Barcelona, Spain, Toptaş Ersin ,   Advanced Research in Mechatronics and Artificial Intelligence, Marmara University, Aydinevler Mah. Idealtepe Yolu No:15 34854 Maltepe/Istanbul/Turkey
Published: June 2022

The emergence of the microfluidic chip was a game-changer in microbiological analysis platforms. This technology, by combining physics, chemistry, biology, and computing, helps researchers to obtain precise results in a shorter time. However, it requires more advancements in order to lessen its limitations. This study presents the design, modelling, and microbiological analysis of a microelectromechanical system (MEMS) based microfluidic chip. Three different microfluidic chips have been developed during the design process. These chips have different inlet channels and one outlet channel. The modelling process was carried out with Multiphysics Software. Pressure and velocity data in micron-sized channels were checked for each system. The flow directions of the fluids in the inlet and outlet channels were observed according to the pressure change. As a result of the analysis, the highest velocity was found in the microfluidic chip with three inlet channels. In comparison, the highest pressure was measured in the microfluidic chip with four inlet channels. These values are 2.36 x10-17 m/s and 13.5 Pa, respectively. The pressure values of the 4 and 5-channel microfluidic chips were very close. The results showed that as the number of inlet channels increased, the pressure value in the microfluidic chip increased, but the velocity value decreased.
Time series forecast of Covid 19 Pandemic Using Auto Recurrent Linear Regression
Authors:   Thai-Nichi International College, Thai-Nichi Institute of Technology, Bangkok, Thailand, Joseph Ferdin Joe John
Published: June 2022

Covid 19 pandemic has done severe impact in the economy and lifestyle of the people since the beginning of 2020. Various data analytics has been tried on the data obtained from various sources. These analytics include symptoms prediction, time series forecasting and impact analysis. The forecast on when the pandemic ends is a challenge for many countries. Time series forecasting models have been proposed for various applications but a non-seasonal and non-stationary forecasting method is needed to predict the progression of the pandemic. An Auto Regressive Linear Regression (ARLR) Algorithm is proposed in this paper with a selected geography’s Covid data. The results of the proposed methodology sounds convincing when compared to the non-seasonal and non-stationary existing methodologies like linear regression and exponential smoothing variants. The performance measure of standard deviation and RMSE of the proposed method obtained 430.22 and 0.31 for active cases while 27.01 and 0.77 for rate of transmission with positive skew and platykurtic trend.
Modification of zeolite Y as a catalyst in the production of dimethyl ether from methanol dehydration
Authors:   Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedharto, SH, Tembalang, Semarang 50275, Indonesia, Buchori Luqman , Anggoro Didi Dwi ,   Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedharto, SH, Tembalang, Semarang 50275, Indonesia
Published: June 2022

Dimethyl ether is an eco-friendly alternative renewable energy that can be utilized in diesel engines to substitute fossil fuels and gas stoves as a household fuel. In the dimethyl ether synthesis process, a catalyst was used to assist the reaction. The catalyst used in this study was dealuminated zeolite Y. This study's objective was to determine the best-dealuminated zeolite Y as a catalyst for the synthesis of dimethyl ether. The zeolite Y catalyst was dealuminated by using sulfuric acid solution. In the preparation step, zeolite Y was dealuminated at different dealumination temperatures (40 to 60°C) and acid concentrations (7.5 to 9.5 N). The catalyst was characterized by using XRF, BET, and SEM-EDX methods. The acidity analysis of the catalyst was performed by the ammonia and pyridine absorption methods. The results showed that the best-dealuminated zeolite Y catalyst was achieved under conditions of dealumination temperature of 50°C and acid concentration of 8.5 N with total acidity of 37.665 mmol/g, Si/Al ratio of 69.42, and surface area of 41.310 m2/g, respectively. The result of catalyst performance test in the dimethyl ether synthesis through methanol dehydration showed that the dealuminated zeolite Y had higher activity than zeolite Y without dealumination. The obtained methanol conversion using dealuminated zeolite Y was 76.07%.
Optimal Model Predictive based on Super-Twisting Fractional Order Sliding Mode Control to Regulate DC-link Voltage of DC Microgrid
Authors:   Department of Electrical Engineering, Islamic Azad University, Yazd Branch, Yazd, Iran., Akbari Mehdi Amiri, Hamidreza , Farzinfar Mehdi ,   Department of Electrical Engineering, Islamic Azad University, Yazd Branch, Yazd, Iran., Sadeghi Mohammad ,   Department of Electrical Engineering, Islamic Azad University, Yazd Branch, Yazd, Iran., Mousavi Somayeh Sadat ,   Department of Electrical Engineering, Islamic Azad University, Yazd Branch, Yazd, Iran.
Published: June 2022

This paper aims to essentially regulate the DC-link voltage of DC microgrid during the disturbance conditions in power system. Hence, a novel Optimal Model Predictive Super-Twisting Fractional Order Sliding Mode Control (OMP-STFOSMC) is proposed for three-phase AC-DC converter which can effectively enhance the stability and dynamic performance of microgrid. The conventional model-predictive controllers have severely imposed the dynamic stability which leads to high overshoot, undershoot and settling-time. The sliding mode controller can be replaced instead of these conventional controllers to appropriately triumph over this problem. A main drawback of conventional sliding mode controller is related to its high frequency chattering in the control signal which can affect the system and doesn’t make it satisfactory and feasible for real applications. The proposed OMP-STFOSMC can effectively enhance the control tracking performance and reduce the high frequency chattering problem. The Stochastic Fractal Search (SFS) algorithm due to its high exploration and good evasion of local optima is used to optimally tune the controller parameters. Different operation conditions are considered to evaluate the dynamic and chattering-free performance of proposed controller. As to the simulation results with comparative analysis, it is observed that the proposed OMP-STFOSMC offers better dynamic stability characteristics.
Index of Physical activity and Fall Efficacy scale classification through biomechanical signals and Machine Learning.
Authors:   Instituto Politécnico Nacional, ESIME-Azcapotzalco, El Jaguey, Azcapotzalco, 02519 Ciudad de México, CDMX, México., Rivera Oswaldo , Castillo-Castaneda Eduardo ,   Instituto Politécnico Nacional-CICATA Querétaro, Cerro Blanco 141, Colinas del Cimatario, 76090 Santiago de Querétaro, QRO, México., Avilés Oscar F. ,   Universidad Militar Nueva Granada- DAVINCI Research Group , Sede Campus Nueva Granada, km 2, vía Cajicá-Zipaquirá, Colombia, Hernández Rubén ,   Universidad Militar Nueva Granada- DAVINCI Research Group , Sede Campus Nueva Granada, km 2, vía Cajicá-Zipaquirá, Colombia
Published: June 2022

The rapid increase of the elderly population and chronic diseases have augmented disability in today's world. This situation has led researchers and engineers to create tools and technologies that allow health caregivers, physical trainers, and health policymakers to understand, measure, and treat people with disabilities. Nowadays, artificial intelligence techniques have been applied to improve the performance of these technologies. This article shows the development of a novel classifier that utilizes Machine Learning (ML) algorithms and biomechanical signals to predict a subject's International Physical Activity Questionnaire (IPAQ) and Falls Efficacy Scale (FES). Three ML algorithms were applied K-Nearest Neighbors (KNN), Decision tree, and Support Vector Machine (SVM). Results show the accuracy of classification over 95%, 99%, and 89%, respectively, and validate the correlation between qualitative scales and biomechanical responses in balance training. This classifier poses as an innovative tool to help professionals adjust and improve physical training programs.
Assertion-Evidence versus Traditional PowerPoint: An Investigation of the Impact of Slide Structure on Engineering Students’ Cognitive load, Motivation, and Performance
Authors:   Industrial & Management Systems Engineering Department, Kuwait University, Kuwait., Alzayed Mohammad Alsager , Alzamel Dalal ,   Capital Markets Authority, Kuwait.
Published: June 2022

Engineers are typically asked to create slides to present their technical presentations in conferences, classrooms, and meetings. Most slides used by engineers follow a traditional PowerPoint style of a topic-subtopic structure. Contrary to the traditional bulleted PowerPoint, the Assertion Evidence (AE) slide structure replaces default phrase headlines with a succinct sentence, containing the main idea of the slide. While prior research has demonstrated that the AE style of presentations is effective towards audience comprehension of the technical presentation material, there is limited research on the effectiveness of AE slides for the presenters’ comprehension. The main goal of this study was to examine the impact of slide structure (AE or Traditional PowerPoint) on engineering students’ cognitive load, presentation self-efficacy, motivation, and performance. In order to assess this research goal, an exploratory study was conducted with 108 engineering students at Kuwait University where a group of students were asked to design slides using Assertion Evidence style of presentations and another group were asked to design slides using Traditional PowerPoint template. The main findings from this study highlighted that participants in the Assertion Evidence group had a lower perceived cognitive workload than participants that designed slides using the Traditional PowerPoint template. However, slide structure did not impact participants’ motivation, self-efficacy, and understanding of the presentation material. The results from this research can be used to drive effective communication of technical engineering presentations.
Investigation the CF Based Conductive Asphalt Mixtures for Anti-icing
Authors:   Department of Civil Engineering, Engineering Faculty, Afyon Kocatepe University, Afyon, 03200, Turkey., Gürer Cahit , Gürgöze Hüseyin ,   Department of Civil Engineering, Natural and Applied Science Institute, Afyon Kocatepe University, Afyon, 03200, Turkey.
Published: June 2022

In recent years, researchers have been working on a new type of pavement called electrically conductive asphalt to be anti-icing. In this study, hot mix asphalt (HMA) stone mastic asphalt (SMA) specimens were prepared by adding carbon fiber (CF) in three different lengths (5-10-15 mm) and five different percent (0.1-0.2-0.3-0.4 and 0.5% by weight). Volume resistivity measurement and temperature changes of the specimens under constant voltage (20 V) were determined for each of the specimens. As a result of the study, it was determined that the CF properties and aggregate gradation difference were quite effective on the electrical conductivity, and the electrical conductivity properties also changed depending on the CF length and percentage in the mixtures. According to the electrical conductivity test results, it was concluded that 5 mm long CF specimens were more suitable for use in electrically conductive asphalt concretes (CAC), one of the lowest volumetric resistivity values in the literature was obtained. In addition, it was concluded that aggregate gradation is also effective on electrical conductivity.
Optimization of tunnels excavation sequences in Egyptian soil conditions
Authors:   Kuwait Building House Company, Civil Engineering Department, Kuwait., Abd Ellaah Ahmed T. , A. Eid Mohamed ,   Minia University, Civil Engineering Department, Minia, Egypt., Elrehim Mostafa Z. Abd ,   Minia University, Civil Engineering Department, Minia, Egypt., Abdullah Waleed ,   Kuwait University. Civil Engineering Department, Kuwait.
Published: June 2022

Construction of huge metro projects in congested areas in Cairo City, Egypt, calls for optimization of the underground excavation process. The soil profile in Cairo city, Egypt, is generally characterized as soft soil containing layers of clay and sand. To control the ground movements and shotcrete stresses, it is necessary to optimize the ground surface settlements and excavation step. In this paper, several tunnel sections were compared to illustrate how the tunnel shape affects the soil deformations and straining actions results. Results of numerical modeling using plane-strain finite elements are presented; different types of sequences for the tunneling excavation of each section are compared. Analysis results from different models show that using different tunnel section excavation sequences affects the soil behavior differently, and that suitability of the sequence is determined by the soil properties and the dimensions of the tunneling section
Modeling the impact of reducing sulfur content of liquid fuels consumed by power plants on the air quality of Kuwait using AERMOD
Authors:   Department of Chemical Engineering, College of Engineering and Petroleum, Kuwait University, P.O.Box 5969, Safat 13060, Kuwait, Al-Fadhli Fahad M. , Alhajeri Nawaf S. ,   Department of Environmental Technology Management, College of Life Sciences, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait, Aly Ahmed Z. ,   Department of Chemical Engineering, College of Engineering and Petroleum, Kuwait University, P.O.Box 5969, Safat 13060, Kuwait, Alsulaili Abdalrahman ,   Civil Engineering Department, College of Engineering and Petroleum, Kuwait University, P.O.Box-5969, 13060, Safat, Kuwait
Published: June 2022

As part of Kuwait’s plan to meet the country’s long-term sustainability goals, a new refinery is being constructed with an objective of desulfurizing crude oil (CO) and heavy fuel oil (HFO) to a low sulfur content, S% (approximately 1% by mass). Since Kuwait’s electric power system relies heavily on CO and HFO for electricity generation, the air quality impacts of this change in sulfur content should be investigated. In this work, three scenarios were examined and compared to the base case. The hourly SO2 emissions of each scenario were simulated using an air quality model (AERMOD) to determine the spatial and temporal SO2 dispersion for the year 2014. The three scenarios were developed based on lowering the sulfur content to 1% for HFO only, CO only, and both HFO and CO. The study results indicated that the annual SO2 emissions were reduced by 75.6%, 12.5% and 82.7% for the first, second and third scenarios, respectively, compared to the base case scenario. The daily averages of SO2 emissions of the first, second and third scenario were 57.7%, 12.4% and 70.1% lower, respectively, compared to the base case. The reductions in the maximum region wide one-hour average SO2 concentrations reached 47.4%, 24% and 54.1% for the first, second and third scenarios, respectively, compared to the base case. The numbers of hourly SO2 exceedances were reduced by about 94%, 54% and 100% for the first, second and third scenarios, respectively, compared to the base case (7361 hourly SO2 exceedances). The results of this analysis show the benefits of reducing the sulfur content of CO and HFO as mitigation strategy to reduce high ambient SO2 concentrations.
Evaluating Supply Chain Network Designs: An Approach Based on SNA Metrics and Random Forest Feature Selection
Authors: Akbar Ghanadian Sara , Ghanbartehrani Saeed
Published: June 2022

Supply chain network design is an important decision-making problem affecting the long-term profitability of firms. Evaluating the performance of supply chain network designs can help decision-makers to select the network configuration that meets the business specifications while operating at a reasonable cost. In this study, Social Network Analysis (SNA) metrics are used to evaluate the performance of closed-loop supply chain (CLSC) Network designs in terms of resilience when exposed to disruptions and the balance of flows. CLSC Networks accommodate the flow of returned products from the customers for recycling, remanufacturing, or disposal, increasing the design complexity compared to traditional supply chain networks. The proposed approach involves custom-designed network-level SNA metrics and random forest (RF) feature selection which are computationally low-cost approaches. The proposed metrics are implemented in an R package titled NetworkSNA and shared on GitHub, and RF feature selection method is performed in python. The optimal and near-optimal network designs from a CLSC Network based on real data are used as a case study. The metric values are interpreted into practical recommendations to compare the alternative CLSC Networks.
Influencing Factor Analysis for the Implementation of Transport Research Results
Authors: Giannopoulos Athanasios , Pramatari Aikaterini , Doukidis Georgios
Published: June 2022

This paper investigates the conditions and factors that influence the decision to proceed to the implementation of the results of a given research project and (eventually) produce innovation. It does this with reference to research projects in the transport sector, especially Intelligent Transport Systems (ITS), by an investigation in two fronts. On the one hand, by a number of in-depth interviews with well-known experts in the field of transport and on the other by a comprehensive statistical analysis of the results of a pan-European questionnaire survey conducted among transport entities involved in, or related with, transport research. This investigation resulted in a number of interesting factors and conditions that seem to be influencing the (decision for the) implementation of research results in the ITS sector. These factors were derived from a longer list of initial potentially influencing factors that was formulated by our face-to-face interviews as well as an extensive bibliographic search of relevant previous work. Our analysis pointed as the most significant influencing factors: the so-called knowledge assimilation capability of the entity i.e., its ability to analyse, interpret and understand externally acquired knowledge; its ability to exploit new knowledge by changing its processes and adapting them for exploitation; its size; its research experience; familiarity (good working relations) with other research project partners; and issues relating to the thus called “implementation environment” e.g., the customisation and standardisation requirements; the ease with which new business models and entities can be formed and accepted; and the existence of substantial private funds interested in investing in research and innovation activities. Existence of an experienced team and especially the involvement of senior personnel in the research project itself, also plays an important role for the subsequent exploitation/implementation of the results of this research. The results of the study presented in this paper, can help in the planning and setting of the rules of operation (i.e., the terms of reference) for publicly funded research programmes as well as in setting incentives and procedures that would enhance and promote increased implementation of research results in the future.
PENGARUH GAYA KEMPEMIMPINAN TERHADAP KINERJA KARYAWAN PT. BANK DANAMON INDONESIA, TBK KANTOR CABANG PEMATANGSIANTAR
Authors: Siregar Muhammad Tony , Lie Darwin , Butarbutar Marisi , Inrawan Ady
Published: June 2022

Tujuan penelitian ini adalah: 1) Untuk mengetahui gambaran gaya kepemimpinan dan kinerja karyawan PT. Bank Danamon Indonesia, Tbk Kantor Cabang Pematangsiantar. 2) Untuk mengetahui pengaruh gaya kepemimpinan terhadap kinerja karyawan pada PT. Bank Danamon Indonesia, Tbk Kantor Cabang Pematangsiantar. Penelitian ini menggunakan metode deskriptif kuantitatif dan deskriptif kualitatif. Populasi pada penelitian ini ialah Karyawan PT. Bank Danamon Indonesia, Tbk Kantor Cabang Pematangsiantar yang berjumlah 23 orang. Variabel bebas pada penelitian ini ialah gaya kepemimpinan dan kinerja karyawan sebagai variabel terikatnya. Pengumpulan data dilakukan dengan kuisioner, wawancara dan dokumentasi. Teknik analisis yang digunakan ialah regresi linier sederhana, koefisien korelasi dan determinasi, serta pengujian hipotesis dengan uji tHasil penelitian dapat disimpulkan sebagai berikut: 1) Karyawan cukup setuju dengan gaya kepemimpinan yang diterapkan dan kinerja karyawan sudah baik. 2) Hasil analisis regresi sederhana yang diperoleh = 28,225 +0,453X, artinya adanya pengaruh positif antara gaya kepemimpinan terhadap kinerja karyawan. 3) Analisis korelasi yang diperoleh nilai r = 0,778 menunjukkan adanya hubungan kuat dan positif antara gaya kepemimpinan terhadap kinerja karyawan. Melalui analisis koefisien determinasi diperoleh nilai 0,605, artinya tinggi rendahnya kinerja karyawan dapat dijelaskan oleh gaya kepemimpinan 60,5 %. 4) Terdapat pengaruh positif dan signifikan antara gaya kepemimpinan terhadap kinerja karyawan dengan thit (5,674) > ttabel (2,079), sehingga penelitian Ho ditolak Ha diterima.