bluuebunny/crossref_metadata_2025 huggingface dataset:
Magicians at Work: Modellers as Institutional Entrepreneurs in the Global Governance of Agriculture and Food Security
Authors: Cornilleau Lise
Published: December 2019

Global models of agriculture act as the epistemic basis for quantitative foresight, which guides international policymaking and research on agriculture. With the new political sociology of science as a backdrop, this article studies the actors who develop and use these models through the lens of field theory. Contributing to the dialogue between the neo-institutionalist field theory and its Bourdieusian version, it describes the structure and the dynamics of the strategic action field of modelling organizations, using the Bourdieusian notions of “succession” and “subversion” to refine the characterization of challengers. It also discusses the insights of the Bourdieusian concept of “homology” to analyse the relations between the field of model producers and the field of model users. Whereas Bourdieu provides a primarily descriptive account of homologies, which are close to a “social magic without magicians” for Roueff, the present text describes magicians doing the work of producing homologies. Some modellers use intercomparison to reduce competition and to have their models used in the field of global governance, thus strategically producing homologies, while resolving the main modelling conflict of the field. These actors benefit from the recent change in the modelling field under the influence of climate change, to behave as what Fligstein and McAdam have called “institutional entrepreneurs”. The article concludes that this amended version of field theory makes it possible to describe the co-construction of a range of models developed by competing organizations and the controversial making of global agricultural governance. Doing so, it complements the co-production framework, which often focuses on a given site of expertise production and a site of global governance.
Situated Expert Judgement
Authors: Laurent Brice , Thoreau Francois
Published: December 2019

In this paper we discuss the kind of expert judgement demanded by the development of a particular class of models known as “Quantitative Structure-Activities Relationship” (QSAR) models, used to predict the toxicity of chemical substances, for regulatory and other purposes. We analyse the production of these models, and attempts at standardizing them. We show that neither a technical nor a procedural standardization is possible. As a consequence, QSAR models cannot ground a production of knowledge along the lines of “mechanical objectivity” or “regulatory objectivity”. Instead, QSAR models imply that expert judgement is situated, re-worked for each new case, and implies an active intervention of the individual expert. This has important consequences for risk governance based on models. It makes transparency a central concern. It also means that new asymmetries emerge, between companies developing sophisticated models and individual experts in regulatory agencies in charge of assessing these models.
Reassembling Energy Policy
Authors: Aykut Stefan Cihan
Published: December 2019

Ongoing debates about the need to deeply transform energy systems worldwide have spurred renewed scholarly interest in the role of future-visions and foreknowledge in energy policy. Forecasts and scenarios are in fact ubiquitous in energy debates: commonly calculated using energy models, they are employed by governments, administrations and civil society actors to identify problems, choose between potential solutions, and justify specific forms of political intervention. This article contributes to these debates through a historic study of foreknowledge-making – modelling, forecasting, and scenario-building – and its relationship to the structuring of ‘energy policy’ as an autonomous policy domain in France and Germany. It brings together two strands of literature: work in the anthropology of politics on ‘policy assemblages’, and STS research on the ‘performative’ effects of foreknowledge. The main argument is that new ways of assembling energy systems in energy modelling, and of bringing together policy networks in scenario-building and forecasting exercises, can contribute to policy change. To analyse the conditions under which such change occurs, the article focuses on two periods: the making of national energy policies as ‘energy supply policies’ in the post-war decades; and challenges to dominant approaches to energy policy and energy modelling in the 1970s and 1980s. It concludes by arguing that further research should not only focus on the effects of foreknowledge on expectations and beliefs (‘discursive performativity’), but also take into account how new models ‘equip’ political, administrative and market actors (‘material performativity’), and how forecasting practices recompose and shape wider policy worlds (‘social performativity’).
Penerapan Model Pembelajaran Berdasarkan Masalah untuk Meningkatkan Hasil Belajar Matematika Siswa
Authors: Suhadi Suhadi
Published: December 2019

Tujuan pada permasalahan dalam penelitian ini adalah rendahnya hasil belajar matematika. Subjek dalam penelitian ini adalah siswa Kelas VI SDN 013 Lubuk Kembang Sari Kecamatan Ukui Kabupaten Pelalawan Tahun 2018 dengan jumlah siswa 20 orang. Jenis penelitian ini adalah PTK yang dilakukan dalam dua siklus, setiap siklus dilaksanakan dalam dua kali pertemuan dengan satu kali ulangan akhir siklus. Instrument pengumpulan data pada penelitian ini adalah lembar observasi  guru, lembar observasi siswa dan tes ulangan akhir siklus. Hasil penelitian ini menunjukkan bahwa model Pembelajaran Berdasarkan Masalah dapat meningkatkan hasil belajar Matematika siswa, peningkatan hasil belajar dapat dilihat pada skor dasar yaitu rata-rata kelas 47,50 dengan ketuntasan klasikal 33,33%, kemudian meningkat pada siklus I yaitu rata-rata kelas 66,67 dengan ketuntasan klasikal 58,33% dan mengalami peningkatan 40,36% dan pada siklus II rata-rata kelas mengalami peningkatan lagi menjadi 76,67 dengan ketuntasan klasikal 83,33% dan mengalami peningkatan 61,41%. Peningkatan hasil belajar ini juga ditunjang oleh peningkatan aktifitas guru dan siswa. Peningkatan aktivitas guru dari siklus I pertemuan pertama ke siklus II pertemuan kedua adalah 40,63%. Sedangkan peningkatan aktivitas siswa dari siklus I pertemuan pertama ke siklus II pertemuan kedua adalah 40,63%. Dengan demikian dapat disimpulkan bahwa Ini artinya bahwa model Pembelajaran Berdasarkan Masalah dapat meningkatkan hasil belajar Matematika siswa Kelas  VI  SDN 013 Lubuk Kembang Sari Kecamatan Ukui Kabupaten Pelalawan Tahun 2018.
Pengaruh Penerapan Pendekatan Realistic Mathematics Education (RME) terhadap Kemampuan Koneksi Matematis berdasarkan Self Regulated Learning Siswa Sekolah Menengah Pertama
Authors: Setiawarni Ade , Rahmi Depriwana , Risnawati Risnawati
Published: December 2019

Penelitian ini dilatarbelakangi oleh adanya fakta dilapangan yang  menunjukkan masih terdapat siswa di SMP Negeri 1 Kampa yang belum optimal memiliki kemampuan koneksi matematis. Adapun hipotesis penelitian ini adalah untuk menyelidiki ada atau tidaknya terdapat perbedaan kemampuan koneksi matematis siswa antara siswa yang memperoleh pembelajaran dengan  pendekatan RME dengan siswa yang memperoleh pembelajaran tanpa pendekatan RME, mengetahui ada atau tidaknya perbedaan kemampuan koneksi matematis antara siswa yang memiliki Self Regulated Learning belajar tinggi, sedang, dan rendah dan ada atau tidak terdapat interaksi antara pendekatan RME dan  Self Regulated Learning belajar siswa terhadap kemampuan koneksi matematis siswa. Penelitian ini merupakan penelitian Quasi Eksperimental dengan desain The Nonequivalent Postest-Only Control Group Design. Populasi dalam penelitian ini adalah seluruh siswa kelas VIII semester genap SMP Negeri 1 Kampa tahun ajaran 2018/2019. Sampel dalam penelitian ini adalah kelas VIII.1 dan VIII.2. Teknik analisis data yang digunakan untuk hipotesis pertama adalah Uji-t sedangkan untuk hipotesis kedua dan ketiga menggunakan anova dua arah. Hasil analisis data dengan menggunakan uji t menunjukkan nilai thitung= 3,470 > ttabel=2,006 sehingga dapat disimpulkan terdapat perbedaan kemampuan koneksi matematis antara siswa yang mengikuti pembelajaran dengan pendekatan RME dengan siswa yang mengikuti pembelajaran tanpa pendekatan RME. Hasil analisis data dengan menggunakan uji anova dua arah untuk  menunjukkan F(B)hitung=95,1 > F(B)tabel=3,19 sehingga dapat disimpulkan terdapat perbedaan kemampuan koneksi matematis antara siswa yang memiliki Self Regulated Learning belajar tinggi, sedang, dan rendah. Sedangkan F(A×B)hitung=-47,2 < F(A×B)tabel=3,19 sehingga dapat disimpulkan bahwa tidak terdapat interaksi antara pendekatan RME dan  Self Regulated Learning belajar siswa terhadap kemampuan koneksi matematis siswa.
Pengaruh Penerapan Model Learning Cycle 7E terhadap Kemampuan Pemecahan Masalah Matematis ditinjau berdasarkan Kemandirian Belajar Siswa SMPN 31 Pekanbaru
Authors: Nufus Hayatun , Wira Cut , Kurniati Annisah
Published: December 2019

Penelitian ini bertujuan: 1) untuk mengetahui apakah terdapat perbedaan kemampuan pemecahan masalah matematis antara siswa yang belajar dengan model learning cycle 7e dengan siswa yang belajar menggunakan pembelajaran konvensional, 2) untuk mengetahui perbedaan kemampuan pemecahan masalah matematis antara siswa yang memiliki kemandirian belajar tinggi, sedang dan rendah, 3) untuk mengetahui apakah terdapat interaksi antara model learning cycle 7e dan kemandirian belajar siswa terhadap kemampuan pemecahan masalah matematis siswa. Penelitian ini merupakan quasi experiment dan desain yang digunakan adalah the non equivalent post-test only control group design. Populasi dalam penelitian ini adalah siswa kelas VII SMPN 31 Pekanbaru yang terdiri dari 3 kelas. Teknik pengambilan sampel yang digunakan dalam penelitian ini adalah purposive sampling dengan sampel kelas VII.1 dan VII.2. Teknik pengumpulan data dalam penelitian ini adalah tes, angket, dan obeservasi. Instrumen pengumpulan data yang digunakan adalah soal post-test kemampuan pemecahan masalah matematis, angket kemandirian belajar dan lembar pengamatan aktivitas guru dan siswa. Teknik analisis data menggunakan uji-t dan anova dua arah. Berdasarkan hasil analisis data di dapat kesimpulan bahwa: 1) terdapat perbedaan kemampuan pemecahan masalah matematis siswa yang belajar dengan model learning cycle 7e dengan siswa yang belajar menggunakan pembelajaran konvensional di SMPN 31 Pekanbaru, 2) tidak terdapat perbedaan kemampuan pemecahan masalah matematis antara siswa yang memiliki kemandirian belajar tinggi, sedang dan rendah  3) tidak terdapat terdapat interaksi antara model learning cycle 7e dan kemandirian belajar siswa terhadap kemampuan pemecahan masalah matematis siswa.
Pengaruh Penerapan Model Pembelajaran Eksploratif Terhadap Kemampuan Representasi Matematis Siswa Berdasarkan Kepercayaan Diri Siswa SMP
Authors: Anggraini Agustina , Andriani Lies
Published: December 2019

Penelitian ini bertujuan untuk mengetahui perbedaan kemampuan representasi matematis antara siswa yang mengikuti pembelajaran dengan model eksploratif dengan siswa yang tidak mengikuti pembelajaran dengan model eksploratif jika berdasarkan kepercayaan diri siswa SMP N 4 Tambang. Penelitian ini merupakan penelitian Quasi Eksperimen dan desain yang digunakan adalah The Nonequivalent Pretest-Posttest Control Group Design. Teknik sampel yang digunakan dalam penelitian ini adalah Purposive Sampling. Analisis data yang digunakan peneliti yaitu dengan menggunakan uji anova dua jalan. Berdasarkan hasil analisis data dapat diambil kesimpulan bahwa: 1) Terdapat perbedaan kemampuan representasi matematis antara siswa yang mengikuti pembelajaran dengan model eksploratif dengan siswa yang tidak mengikuti pembelajaran dengan model eksploratif, 2) Terdapat perbedaan kemampuan representasi matematis siswa yang mengikuti pembelajaran dengan model eksploratif dengan siswa yang tidak mengikuti pembelajaran dengan model eksploratif jika berdasarkan kepercayaan diri siswa, 3) Tidak terdapat pengaruh interaksi penerapan model eksploratif dan kepercayaan diri siswa terhadap kemampuan representasi matematis siswa. Dengan demikian, secara umum dapat disimpulkan bahwa penerapan model eksploratif berpengaruh terhadap kemampuan representasi matematis berdasarkan kepercayaan diri siswa Sekolah Menengah Pertama Pekanbaru.
Pengaruh Penerapan Strategi Pembelajaran Metakognitif terhadap Kemampuan Koneksi Matematis Berdasarkan Kemandirian Belajar Siswa SMP/MTs
Authors: Asmawati A. , Risnawati R. , Muhandaz Ramon
Published: December 2019

Kemampuan koneksi matematis merupakan kemampuan pembelajaran matematika yang harus dimiliki oleh siswa. Oleh karena itu, diperlukan suatu penelitian untuk meningkatkan kemampuan tersebut. Penelitian ini bertujuan untuk mengetahui pengaruh penerapan strategi pembelajaran metakognitif terhadap kemampuan koneksi matematis berdasarkan kemandirian belajar siswa. Jenis penelitian ini merupakan penelitian Quasi Eksperimental dengan desain The Nonequivalent Posttest Only Control Group Design. Penelitian ini dilakukan di MTsN 1 Pekanbaru. Sampel dalam penelitian ini adalah kelas VII.7 sebagai kelas eksperimen dan VII.8 sebagai kelas kontrol. Instrumen penelitian ini berupa tes kemampuan koneksi matematis, angket kemandirian belajar dan lembar observasi. Teknik analisis data yang digunakan untuk hipotesis 1 adalah uji-t sedangkan untuk hipotesis 2 dan 3 menggunakan anova dua arah. Hasil analisis data dengan menggunakan uji-t menunjukkan nilai  sehingga disimpulkan terdapat perbedaan kemampuan koneksi matematis antara siswa yang belajar menggunakan strategi pembelajaran metakognitif dengan siswa yang belajar tanpa menggunakan strategi pembelajaran metakognitif. Kemampuan koneksi matematis siswa di kelas eksperimen lebih baik dari pada kelas kontrol, dimana nilai rata-rata kelas eksperimen adalah  dan nilai rata-rata kelas kontrol adalah Hasil analisis data menggunakan anova dua arah menunjukkan  sehingga disimpulkan terdapat perbedaan kemampuan koneksi matematis antara siswa yang memiliki kemandirian belajar tinggi, sedang, dan rendah dan menunjukkan  sehingga disimpulkan bahwa tidak terdapat interaksi antara strategi pembelajaran dengan kemandirian belajar siswa dalam mempengaruhi kemampuan koneksi matematis siswa. Hasil tersebut mengidentifikasi bahwa strategi pembelajaran metakognitif mempengaruhi kemampuan koneksi matematis. Hasil penelitian ini dapat digunakan guru dalam meningkatkan kualitas pembelajaran di kelas, khususnya kemampuan koneksi matematis.
Kemampuan Berpikir Kreatif Siswa dalam Memecahkan Masalah Matematika Kelas VIII.C di SMP Negeri 1 Bukittinggi
Authors: Alfafah An Nisaa , Aniswita Aniswita , Firmanti Pipit
Published: December 2019

Kemampuan berpikir kreatif matematika merupakan kemampuan untuk melihat bermacam-macam kemungkinan penyelesaian terhadap suatu masalah. Kemampuan ini terdiri dari tiga indikator, yaitu kefasihan, keluwesan dan kebaruan. Oleh karena itu, tujuan penelitian ini untuk mengetahui distribusi tingkat kemampuan berpikir kreatif siswa SMP N 1 Bukit Tinggi dalam memecahkan masalah matematika yang memuat kefasihan, keluwesan, dan kebaruan. Penelitian ini menggunakan jenis penelitian kualitatif dengan metode deskriptif kuantitatif. Teknik pengumpulan data menggunakan teknik tes dengan instrumen penelitian berupa soal tes uraian/essay. Instrumen soal tes dikembangkan melalui kegiatan perancangan soal tes, uji validitas soal tes, dan uji coba soal tes. Teknik analisis data menggunakan tabulasi data, yang dilanjutkan dengan menentukan kategori tingkat kemampuan berpikir kreatif, menyajikan data, mendeskripsikan dan menarik kesimpulan dari data yang dikumpulkan. Hasil penelitian menunjukkan bahwa siswa dalam menjawab soal tes kemampuan berpikir kreatif matematika dalam memecahkan masalah matematika terkategori dalam beberapa tingkatan. Terdapat 4 siswa(12,5%) berada pada TKBK 4 (Sangat Kreatif), 25 siswa(78,125%) berada pada TKBK 3 (Kreatif), 2 siswa (6,25%) berada pada TKBK 2 (Cukup Kreatif), dan terdapat 1 siswa (3,125%) berada pada TKBK 1 (Kurang Kreatif).
Pengaruh Penerapan Model Pembelajaran Meaningful Instructional Design (MID) terhadap Kemampuan Pemahaman Konsep Matematis berdasarkan Self Regulated Siswa SMP/MTs
Authors: Fauziah Resty , Hasanuddin H , Nuh Zulkifli M
Published: December 2019

Penelitian ini bertujuan untuk mengetahui pengaruh penerapan model pembelajaran Meaningful Instructional Design (MID) terhadap kemampuan pemahaman konsep matematis berdasarkan self regulated siswa SMP/MTs. Penelitian ini mengunakan desain faktorial. Populasi dalam penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 3 Tambang. Sampel dalam penelitian ini adalah kelas VIII-1 sebagai kelas eksperimen dan kelas VIII-4 sebagai kelas kontrol. Teknik pengambilan sampel yang digunakan dalam penelitian ini adalah cluster random sampling. Instrumen yang digunakan adalah tes uraian untuk mengukur kemampuan pemahaman konsep matematis. Teknik analisis data yang digunakan peneliti yaitu uji-t dan anova dua arah. Berdasarkan hasil penelitian, dapat disimpulkan bahwa (1) Terdapat perbedaan kemampuan pemahaman konsep matematis antara siswa yang diterapkan model pembelajaran MID dengan siswa yang diterapkan pembelajaran konvensional. (2) Terdapat perbedaan pemahaman konsep matematis siswa yang memiliki self regulated pada kelas eksperimen dan siswa yang memiliki self regulated pada kelas kontrol. (3) Tidak terdapat interaksi antara model pembelajaran MID dengan self regulated terhadap kemampuan pemahaman konsep matematis siswa. Secara umum model  pembelajaran MID erpengaruh terhadap kemampuan pemahaman konsep matematis berdasarkan self regulated siswa SMP Negeri 3 Tambang.
CHAMPS CULTURE TO INCREASE EMPLOYEE PERFORMANCE
Authors: Frinaldi Aldri , Embi Muhammad Ali , Bila Aziza
Published: December 2019

The objective of this study was to determine the influence of corporate culture in improving employees' performance at state-owned enterprise PT. Semen Padang, West Sumatra. This research used quantitative methods and was supported by qualitative data. Data were collected quantitatively from samples selected using Simple Random Sampling. Qualitative data was collected with observation and interview with purposive sampling technique. The population of PT. Semen Padang employees are 1924 people. The sample was calculated using Slovin's formula (error of 5%) and consisted of 331 samples. The initial hypothesis in this research consisted of seven hypotheses. This study found a significant influence of a corporate culture that consists of six variables of work culture in improving employees’ performance at PT. Semen Padang. This study also found other factors that affect employees' performance. This study offers managers at PT. Semen Padang the key to increasing their employees' performance. The essence of this study is to prove that there is a significant influence of corporate cultures in improving employees' performance.
VERBAL VIOLENCE PERFORMED BY SUPPORTERS’ GROUP OF GUBERNATORIAL CANDIDATES IN THE POLITICAL DISCOURSE OF JAKARTA ELECTION
Authors: Mustika Tria Putri , Agustina Agustina , Ramadhan Syahrul
Published: December 2019

This study aimed to describe the verbal violence performed by supporters’ group of gubernatorial candidates in the discourse of Jakarta election 2017 in their community accounts on social media and its implications for language politeness. This research was a qualitative research with descriptive method. Analyzing data was done by content analysis method as a means to reveal, understand, and capture messages in data, and make conclusions obtained through identification and interpretation of data. The results of this study reveal that the delivery of comments by the supporters’ group in the discourse of Jakarta Gubernatorial Election 2017 was dominated by the use of sarcasm (figure of speech), combined with expressive speech acts, and bald on record strategy without further ado. The total violation of the use of politeness principle shows that verbal violence dominates the expression of comments and ‘high-potential’ comments that threaten the recipients’ face. Therefore, based on this research data, the politeness level of these selected groups is in the category of ‘impolite’.Keywords: verbal violence, politeness, speech acts, political discourseKEKERASAN VERBAL OLEH KOMUNITAS PENDUKUNG PASLON DALAM WACANA POLITIK PILKADA DKI JAKARTAAbstrakPenelitian ini bertujuan untuk mendeskripsikan kekerasan verbal oleh pendukung paslon tentang wacana Pilkada DKI Jakarta 2017 dalam akun komunitasnya di media sosial dan implikasinya terhadap kesantunan berbahasa. Penelitian ini merupakan penelitian kualitatif dengan metode deskriptif. Penganalisisan data dilakukan dengan metode analisis isi (content analysis) untuk mengungkap, memahami, dan menangkap pesan dalam data, serta  membuat simpulan yang diperoleh melalui identifikasi dan penafsiran data. Hasil penelitian ini mengungkapkan bahwapenyampaian komentar oleh pendukung paslon tentag wacana Pilkada DKI didominasi dengan penggunaan majas sarkasme, jenis tindak tutur ekspresif, dan strategi terus-terang tanpa basa-basi. Pelanggaran total terhadap penggunaan prinsip kesantunan menunjukkan bahwa kekerasan verbal mendominasi penyampaikan komentar dan pendapat  ‘berpotensi tinggi’ mengancam muka lawan tutur, sehingta berdasarkan data penelitian ini kesantunan berbahasa para komunitas pendukung paslon berada pada kategori ‘tidak santun’.Kata kunci: kekerasan verbal, kesantunan, tindak tutur, wacana politik
ASPECTS OF JAVANESE NUANCED POLITENESS WHEN SERVING HOTEL GUESTS IN YOGYAKARTA
Authors: Purnomo Budi
Published: December 2019

A receptionist is the first and the last person guests talk to in a hotel. If s/he makes a good impression with skillful services and good communication followed by other hotel staff, the guests have no reason to complain, and oppositely, they would come back again. This study aims to analyze aspects of Javanese politeness which is expressed by hotel receptionists during their communication with guests in Yogyakarta. Location of the research is Yogyakarta City, Indonesia. Data include four kinds of conversational discourse: (1) checking guests in, (2) providing guests with information, (3) dealing with guest complaints and (4) checking guests out. Techniques of collecting data include observation and field notes, recordings, questionnaire, in-depth interviewing and document analysis. The findings show that hotel receptionists in Yogyakarta use aspects of Javanese politeness on one occasion, but violate them on another occasion. The aspects of Javanese nuanced politeness they use and violate are sumanak ‘friendly’, sabar lan sareh ‘patient and with ease, calm’, tepa slira ‘showing a feeling of sympathy or solidarity’, andhap asor ‘giving a high respect, appropriate appreciation’, empan papan ‘matches with the setting and occasion’ and nuju prana ‘pleasing, satisfying’.
THE UNLUCKY NUMBER IN CULTURAL PERSPECTIVE OF JAPANESE SOCIETY
Authors: Suhartini Suhartini
Published: December 2019

This article tries to reveal the cultural perspective of Japanese society on unlucky number, that is 4. Comprehending this phenomenon is needed by those who intend to cooperate or make relation with the Japanese in order to get better understanding. Library research and interview with native speakers of Japanese and Chinese are conducted in this research. The result shows that 4 is considered an unlucky number because linguistics link in the form of homophone or similarity of sound between the Japanese numeralia’s pronounciation of absorbed from Chinese, that is shi [ɕi] meaning ‘number 4’,  and a Japanese root verb’s pronounciation shi [ɕi] of shinu [ɕinɯ] meaning ‘death’. Although today the number is often used in public, some Japanese still avoid it directly or indirectly. Direct avoidance is done by not using 4 or refusing anything related to the number. Indirect avoidance is done by using numeralia yon which is the synonym of shi, both of which mean 4.
Persistência de Veia Cava Superior Esquerda em Paciente Submetido a Implante de Marcapasso
Authors: Carneiro Vicente Bueno Sara , Duarte Lourenço Arnaldo
Published: December 2019

A persistência da veia cava superior esquerda (PCVSE) é a malformação venosa torácica mais frequente, porém rara e com diagnóstico habitualmente acidental. Recorrentemente, sua maior suspeita é realizada no ato intraoperatório relacionado a uma difi culdade técnica na realização do procedimento, mesmo por profissionais mais experientes. Relato de caso: Paciente de 77 anos, sexo feminino, chagásica, submetida a implante de marcapasso definitivo, sendo o diagnóstico de persistência de veia cava superior esquerda realizado durante o procedimento cirúrgico. A paciente não apresentou intercorrência durante o procedimento e evoluiu com melhora clínica substancial após o implante do dispositivo cardíaco eletrônico, mantendo-se assintomática.
What is the Diagnosis?
Authors: Mario Baggio Junior Baggio Junior Jose , Ariel Pereira Mosquera Joubert , Gustavo Ferreira Gomes Luis , Luis Gali Wagner , Valentim Lima Sarabanda Alvaro
Published: December 2019

Patient YB, 50 years old, female, with hypothyroidism, severe left ventricular dysfunction, uncompressed left ventricle and poorly tolerated ventricular tachycardia, submitted to implantation of a dual chamber implantable cardioverter-defibrillator (ICD) in February 2012 (generator Secura DR Medtronic, 4076 Medtronic atrial electrode, and Sprint Quattro 6947 Medtronic ventricular electrode). Returns asymptomatic nine months after the implant for routine evaluation.
İşgörenlerin kariyer planlamasında işveren markasının rolü: Otel işletmeleri örneği
Authors: YASAR Emre , DEMİR Mahmut
Published: December 2019

Bu çalışmanın amacı,
işgörenlerin kariyer planlamasında işveren markasının rolünü belirlemektir. Araştırma verileri Ekim 2018-Mart 2019 döneminde, aynı
zamanda Isparta Uygulama Bilimler Üniversitesi ve Süleyman Demirel
Üniversitesinde Lisans ve Ön lisans turizm düzeyinde öğrenim gören 18-30 yaş
grubundaki 417 işgörenden yüzyüze görüşme yapılarak anket formu aracılığı ile
toplanmıştır. Verilerin analizinde SPSS programından yararlanılmıştır. İlk
olarak verilere geçerlik ve güvenirlik analizi uygulanmıştır. İkinci aşamada
araştırma hipotezlerini test etmek amacıyla korelasyon ve regresyon analizleri
yapılmıştır. Analiz sonuçlarında “terfi olanakları, iş güvencesi, kişisel
gelişim programları, yetenek yönetimi programları, sürdürülebilir kariyer
fırsatları, ve uluslararası çalışma deneyimi” değişkenlerinin kariyer
planlaması üzerinde etkisinin olduğu bulgusuna ulaşılmıştır. Sonuç olarak
oluşturulan hipotezler kabul edilmiştir.
Quality assessment of tiger nut milk fortified with Moringa oleifera seed powder
Authors: Osaloni Aanuoluwa R. , Arijeniwa Charles O. , Bada Sunday O. , Seyifunmi Elliot O.
Published: December 2019

In this study, the effect of fortification of tiger nut milk with moringa seed on the microbial, nutritional and sensory quality of the local beverage was investigated. Fortification of tiger nut milk significantly (p ≤ 0.05) reduced the fungal load of the drink with 8.00 as against 17.00 in the control sample. The organisms isolated from the freshly prepared tiger nut milk blends were Bacillus subtilis, Micrococcus luteus, Saccharomyces cerevisiae, Aspergillus niger, Rhizopus stolonifer and Penicillum species. Further, fortified milk had higher moisture (78.51%), protein (2.97%) and lipid (2.01%) contents compared with the unfortified milk which had 76.83%, 2.11% and 1.45% respectively. Also, the ash, fiber and carbohydrate contents of the unfortified tiger nut milk were higher than that of the fortified tiger nut milk. Similarly, the fortified milk had higher level of all the minerals assessed than unfortified milk. In the sensory evaluation, tiger nut milk fortified with moringa seed had comparable rating to the unfortified milk in appearance, color, consistency and acceptability, but had a lower rating for taste and higher rating for aroma. These results suggest that moringa seed powder may be added to tiger nut milk to improve its nutritional quality.
Improving Transnational Education in Timber Construction by the Use of Project-Based Learning Approach: As Evaluated by Teachers and Students
Authors: Mortesen Andrea , Tupenaite Laura , Naimaviciene Jurga , Kanapeckiene Loreta , Amado Miguel , Hamburg Pille , Taylor Roger Howard
Published: December 2019

The atmospheric CO2 is now at the highest level seen (400 ppm) and the construction sector is responsible for 36 % of all greenhouse gases. One way to reduce this negative impact is to use more sustainable and environmentally friendly materials such as timber in the construction. To direct the sector towards this goal, the Erasmus+ project HiTimber (“Sustainable High-Rise Buildings Designed and Constructed in Timber”) was initiated in 2017. With the objective of developing an international and trans-disciplinary course in design, construction and management of sustainable high-rise timber buildings, project-based learning (PBL) was applied. The aim of the paper is to examine the effects of the PBL by examples and results from the HiTimber workshops. The presented results are the approbation of scientifically-practical results, derived from surveys conducted in 2018 and 2019 where 29 teachers and 45 students evaluated the PBL-based workshops. In general, all teachers and 85 % of students were satisfied with the PBL approach; the students were more engaged, motivated and successful in their studies. However, the transition from traditional teaching to PBL has its challenges and requires time, effort and strong commitment from both students and teachers to be effective.
Assessment of Practicability and Barriers of Use of BIM Strategies for Efficient Management of Public Buildings
Authors: Anih Paul C. , Ogbuefi Paul C. , Ozugha Akuyoma G.
Published: December 2019

The productivity of real property depends on the efficiency of the property management technique. Building Information Modelling (BIM) is an emerging technique examined. The aim of the research is to explore the practicability of BIM for the management of public buildings (PBs) and the hindrances subject to the effective operation. The tasks of the research were to investigate the awareness level of BIM for management of PBs; to investigate the acceptance level of BIM as a property management technique; to explore the hindrances of BIM use for the management of PBs; and, to assess the suitability of BIM for management of historic buildings. Survey and descriptive methods were used in the research. One hundred and nine questionnaires were distributed and a total of seventy-eight was returned. Purposive sampling technique was used for the selection of the respondents. Stratified random sampling was used to select the public buildings, while clustered sampling was used for locations. The findings of the research showed a low level of awareness from the respondents; BIM was not in use; the acceptance of BIM was high but the hindrances were numerous. The research concluded that the use of BIM was practicable given adequate awareness and training. The research recommended a paradigm shift from the traditional property management approach to BIM strategy for the effective performance of PBs.
Public Procurement of Innovation: Selection of the Sustainable Alternative
Authors: Babica Viktorija , Sceulovs Deniss
Published: December 2019

The European Union has been highly emphasising the role of public procurement for innovation as a policy instrument that can be used to stimulate sustainable development. This development reflects and responds to improvements in social welfare, growth of entrepreneurship and of national competitive advantage. In the process of selection, the awarding tender public procurement institutions lack an overall approach for choosing the most advantageous and sustainable innovation alternative. To contribute purchasing of innovative solutions, the present paper elaborates a framework of innovation measurement and quality evaluation. Thus, it makes possible to assess proposals from different aspects and to choose the most valuable offer notwithstanding the lowest price criteria.

The paper studies the concept of public procurement, its pitfalls and prospects, dimensions of innovation definition and innovation added value assessment. The authors conducted expert interviews, which were analysed using an AHP method in order to set the most appropriate evaluation criteria indicator. The authors also designed the framework for assessing the quantitative and qualitative value of innovation proposals. The proposed approach is based on the analysis of innovation quality, added value, its potential impact and the sustainability of changes it produces.
Relationship Between Nursing Home Safety Climate and Caregivers’ Competence
Authors: Sepp Jaana , Järvis Marina
Published: December 2019

To provide quality healthcare, strong teamwork, safety commitment and collaboration between workers are needed. The aim of this paper is to analyse factors related to safety climate and professional competence among caregivers and to compare the results between different age groups in Estonian nursing homes. A Nordic Safety Climate Questionnaire (NOSACQ-50), measuring 7 dimensions of safety climate, was used in order to assess caregivers’ perceptions of the safety climate in Estonian nursing homes, on a sample of 233 caregivers. In order to supplement results from the safety climate study, a Caregivers’ Competence Questionnaire (CCQ) measuring 6 scales of the caregivers’ competences, their perceptions towards received education and safety-related procedures in nursing homes, was used on a sample of 241 caregivers. Results show differences between age groups of caregivers. The most experienced caregivers tended to have a better understanding of their specialty and more positive ratings of the dimensions of safety climate and safety commitment than younger age groups of caregivers. Result show that the age group with respondents born in the period of 1961–1970 gave more positive ratings of “Necessary skills, knowledge in living questions and caring activities” than did other groups of caregivers (mean = 4.46 and 4.41) and of “First aid” (mean = 4.47). The study sheds new light on the usability and applicability of the existing assessment tools NASACQ-50 and CCQ. Interventions to promote safety climate in the nursing homes should be tailored to the target group with a special focus on age and work experiences as attitudes and perceptions may differ among those groups.
Numerical Evaluation of Probability of Harmful Impact Caused by Toxic Spill Emergencies
Authors: Skob Yurii , Ugryumov Mykhaylo , Granovskiy Eduard
Published: December 2019

The purpose of the work is to assess the degree of inhalation damage of a person exposed to the toxic cloud of liquefied gas evaporation from a spill spot of various shapes. The mathematical model of liquefied gas spill evaporation which arose as a result of accidental destruction of the storage capacity and further dispersion of the gas impurity in the atmosphere surface layer was developed. The computational technology for determining the fields of conditional probability of human inhalation damage by a toxic gas based on a probit analysis is developed. The mathematical model takes into account the flow compressibility, complex terrain, three-dimensional nature of the dispersion process, and the presence of toxic liquid substance evaporation from the arbitrary spill spot with varying intensity. The model allows obtaining space-time distributions of the toxic gas relative mass concentration and inhaled toxidosis which is necessary to determine the fields of the human damage probability based on the probit analysis. For different ellipticity of the hydrogen cyanide spill elliptical spot the fields of probability of human mortal damage are obtained and the influence of spot ellipticity on the scale of the consequences of an accident of this type is analysed. The developed technology allows carrying out automated analysis and forecasting in the time and space of the damage probability of a person exposed to the toxic gas as an indicator of the safety of the technogenic object.
Parameters that Affect Electricity Consumption in Fish Freezing. Case Study
Authors: Terehovics Edvins , Veidenbergs Ivars , Blumberga Dagnija
Published: December 2019

Reducing energy consumption in industry has become an important aspect on a global scale. Energy efficiency is one way of reducing energy consumption and promoting competitiveness. Increasing energy costs, security of energy supply, emissions from energy production have shown that current freezer design solutions are not sustainable. The food industry has a common tendency, whereby energy costs are only of secondary importance, unlike other production costs, resulting in minimal monitoring of energy consumption. Electricity consumption for freezer operation amounts to 20 % of total electricity consumption. Within the framework of this study, electricity consumption for fish freezing and storing frozen fish and finished products, as well as the coefficient of performance (COP) for compressors and parameters affecting COP were analyzed. From the results it can be concluded that the specific consumption of electricity in freezing of fish is lower than that of frozen fish storage. The two-stage compressor COP ranges from 2.4 to 3.7, but the single-stage compressor COP ranges from 3.7 to 5.5. The pressure in the condenser and ammonia vapor temperature after the compressor is affected by the temperature of the water used to cool the condenser and compressors. As the temperature of the water used for cooling increases, the condenser and ammonia vapor temperature after the compressor increase, which in turn reduces the compressor COP.
Economic Performance of Net-Zero Energy Community under Reward-Penalty Mechanism Considering PV System Reliability
Authors: Lu Yuehong , Khan Zafar , Gunduz Hasan , Wang Wei , Li Jianing , Zhang Xiao-Ping
Published: December 2019

Economic performance of net-zero energy building/community (ZEB/ZEC) is an important factor that affects potential investors’ decision on installing renewable energy systems (RES). A reward-penalty mechanism (RPM) is proposed for accelerating the development of zero energy communities, which is developed without considering the reliability effect from RES generation. However, an investigation is deserved for the reliability effect of RES on building economic performance. A case study is therefore conducted based on an assumed community consisting of 20 family houses, in which the electricity load was collected by the smart meter for more than one year. The results show that the proposed RPM works efficiently under an ideal condition, while the costs of the community and its buildings are greatly increased when the effect of PV system reliability is considered. Specifically, the total cost of the community under 1.0ZEC design is 5 005 USD/yr in the first year, which increases to 11 341 USD/yr in the 25th year. By contrast, the total cost of the community under 1.2ZEC design is 5 243 USD/yr in the first year and increases to 9 607 USD/yr in the 25th year. It is believed that the results of this study can provide a progressive perspective for scheme makers and building owners in terms of its economic benefit. Development of enhanced RPM by considering system reliability will be investigated in our future work.
Potential of Energy Willow Plantations for Biological Reclamation of Soils Polluted by 137Cs and Heavy Metals, and for Control of Nutrients Leaking into Water Systems
Authors: Rodzkin Aleh , Khroustalev Boris , Kundas Semjon , Chernenok Evgenija , Krstic Borivoj
Published: December 2019

Willow is a low-maintenance crop that has potential for energy production and enhancing the local environment. The area of commercial plantations of willow in Europe is mostly concentrated in Sweden, with more than 20 000 ha. Willow trees are used not only for energy production, but also for reclamation of polluted soils because a plantation may grow for 20–25 years, with a three-year period of harvesting. Our research covers issues of reclamation of soils contaminated by radionuclides and heavy metals, and decreasing of eutrophication of water ecosystems with using willow plantations. The field studies of phytoremediation of soil contaminated by 137Cs by willow plants were conducted in eastern Belarus, in the area where agricultural activity was banned after Chernobyl disaster. This region is heavily polluted with 137Cs (from 185 to 555 kBq/m2) and heavy metals. The transferring factors of accumulated 137Cs and heavy metals from the soil to willow biomass were determined. The field experiments showed that willow does not accumulate actively Cd and Pb, but it accumulates Zn, Cu and Mn intensively. The potassium application decreases the accumulation of 137Cs in willow biomass and increases accumulation of Cu, Zn and Mn, but has no influence on accumulation of Cd and Pb. Our results confirmed that soils polluted with radionuclide and heavy metals could be used for willow cultivation as energy crop, if adequate management is applied. The different potential of the willow species concerning heavy metals accumulation was also established. The yield of willow biomass on polluted soils achieved 11.5–12.8 DMg ha–1 per year, depending on variety, that is competitive with the ordinary yield of willow on mineral fertile soils. Willow plantations also may be used for accumulations of nutrients like nitrogen and phosphorus in watersheds. It enables to decrease impact for water ecosystems and to control eutrophication.
CFD Modelling of Biomass Mixing in Anaerobic Digesters of Biogas Plants
Authors: Conti Fosca , Saidi Abdessamad , Goldbrunner Markus
Published: December 2019

Cut in greenhouse gas emissions, increment of energy from renewables and improvement in energy efficiency represent the three key targets for future energy systems. Among the available bioenergy technologies, biogas production via biodegradation and anaerobic digestion is a widely applied approach, not only to produce biofuels but also to manage industrial and domestic organic waste. Within the biogas production, a sufficient mixing of the organic mass is a crucial step to ensure high biogas yields by bacteria and enzymes. Measurements of the electric power consumption of biogas plants revealed that the electrical energy demand of the stirrer system has a high share of the total electricity consumption of a biogas plant. Investigations on real biogas digesters to optimize the mixing process are cost and time intensive. Therefore, laboratory prototypes and computational simulations represent promising alternatives to analyse and improve the efficiency of mixing systems. In this paper, a computational fluid dynamics (CFD) model is presented, which is applied to commercial stirring systems. The case of two propeller stirrers, located in diametrically opposite positions in a tank filled with ca. 1400 m3 of substrate is described in detail. For the simulation, the rheology of the fluid is adapted to a biomass with 12 wt % dry matter content and obeying the non-Newtonian generalized Ostwald-de Waele power law. The developed simulation procedure considers the rotation angle of each propeller and its height. A total of 441 mixing configurations are calculated and evaluated in terms of the technical benefit. The investigation reveals that locations of the rotors far away from the bottom and high rotational angles cause advantageous fluid dynamics.
Life Cycle Assessment of Foam Concrete Production in Latvia
Authors: Zimele Zinta , Sinka Maris , Korjakins Aleksandrs , Bajare Diana , Sahmenko Genadijs
Published: December 2019

Global warming being increasingly discussed, solutions for reducing emission greenhouse gases become more important in all industry sectors. The total energy consumed in the construction sector contribute up to 1/3 from all greenhouse gases emissions. Large part of it comes from the cement production – 5 % of the total global emissions. The foam concrete is lightweight concrete with good thermal properties and ability to reduce CO2 emissions by reducing the use of cement due to its low density. The aim of this study is to determine impact on the environment with the use of Life Cycle Assessment (LCA) with focus on Global Warming Potential (GWP) for two different compressive strength foam concrete mixtures produced in Latvia by unique intensive mixing technology – turbulence with cavitation effect. Afterwards, the selected foam concrete mixtures are compared with alternative materials with similar compressive strength – aerated concrete and hollow ceramic blocks. The foam concrete mixture having 12.5 MPa compressive strength showed higher CO2 emissions than hallow ceramic block. The majority of CO2 emissions comes from the Portland cement, which is a key element in its composition. On the other hand, the foam concrete mixture having 2.4 MPa compressive strength showed higher CO2 emissions than aerated concrete block. The majority of CO2 emissions are due to foam glass granules, which is the main element contributing to the increased insulation properties of the material. Comparison of each foam concrete with analogue building material by compressive strength shows that the chosen foam concrete mixtures produce greater GWP than alternative materials. This research allows to identify the environmental impacts of different foam concrete mixture components and to improve these mixtures to achieve similar properties with less impact, for example, by replacing foam glass granules with granules made from recycled glass or replacing cement with flay ash, silica fume or recycled glass powder.
Sustainable Electronic Product Development in the Baltic Sea Region: A Regional Gap Analysis of Lab Testing Services
Authors: Philipp Robert , Ozarska Alise , Prause Gunnar
Published: December 2019

Baltic Sea Region represents one of the most innovative areas within Europe with dominating SME sector. In order to keep the region and their product developments competitive it is necessary to safeguard access to high-tech labs including test services. This can be realized only through regional networks of universities – business cooperation. The European Union started the project “Test-4-SME” in 2017 to investigate and promote laboratory networks for testing and assessment of electronic products developed by SMEs from BSR. In a BSR wide online survey, the project consortium identified existing gaps in the regional supply of open laboratories together with shortcomings in services, expertise or test equipment, which is needed by SMEs for electronic product or devices testing. The authors take place in the “Test-4-SME” project, conducted the survey and analysed the regional demand together with the availability of labs for SME sector in the BSR. The study focusses on the research question in which BSR regions there exist already university-business networks of open labs for SME and to which extent the offered services meet the regional demand. Therefore, an approach of a gap analysis is used, which is based on primary data gathered in a BSR wide survey together with expert interviews. The results of the study are discussed in the context of the existing literature and recommendations for future improvements are highlighted.
Multi-Criteria Analysis to Select Renewable Energy Solution for District Heating System
Authors: Polikarpova Ilze , Lauka Dace , Blumberga Dagnija , Vigants Edgars
Published: December 2019

The research paper is focused on how to choose the most suitable renewable energy solution using multi-criteria analysis for a district heating system. Making choices is based on indicators – economic, environmental and social. In this case, the study used five indicators: resources costs, totals investments, reduction of greenhouse gas emissions, specific weight of renewable energy resources and impact on utilized land. Three situations have been compared – current situation: gas boiler, planned: solar collectors 21 595 m2 + accumulation tank 8000 m3 and alternatives: solar PV panels 5504 m2 – heat pump COP 3 are used in the estimation. The multi-criteria decision-making analysis shows that solar collectors 21 595 m2 + accumulation tank 8000 m3 are considered as the best alternative. The methodology is based on choosing a solution for a district heating company in Latvia.