bluuebunny/crossref_metadata_2025 huggingface dataset:
La importancia de la perspectiva histórica y de los modelos en la enseñanza de la física
Authors: Perea Juan Manuel
Published: November 2019

Probablemente uno de los grandes vacíos pedagógicos de los programas curriculares de Física, tanto a nivel de educación media como universitaria, es la falta de perspectiva histórica que nos permita relativizar sanamente la concepción de realidad y de verdad.Cuando se piensa o enseña una idea o concepto tomada como una verdad absoluta situada en un determinado momento histórico estamos asumiendo un papel terminal a la ciencia.La ciencia es ante todo un sistema inacabado en permanente elaboración y aniquilación: se construyen nuevas teorías en detrimento de las anteriores que no pueden competir en un poder explicativo (por ejemplo la teoría ondulatoria de la luz de Huygens a cambio de la teoría corpuscular de Newton); con las nuevas teorías nacen nuevos conceptos y surgen nuevas realidades.

Estas nuevas realidades no se refieren desde luego, a los datos perceptuales como tales. Ilustramos esto con el siguiente ejemplo: Hace varios miles de años el cielo en la noche tenía aproximadamente la misma apariencia que la que hoy tiene. En otras palabras, las retinas de nuestros antepasados eran afectadas por lo que hoy llamamos "ondas electromagnéticas’ de la misma forma como son afectadas las nuestras al mirar hacia el cielo en una noche estrellada.

Pero la realidad de nuestros ancestros remotos era bien diferente. Lo que ellos observaban eran las hogueras de los nómadas de la inmensidad, que en la noche, al igual que ellos, dormían alrededor del fuego protector. Poco después esos mismos datos perceptuales eran pequeños huecos en la gran bóveda celeste que dejaban pasar la luz inmensa de Dios. Más tarde fueron inmensas bolas de fuego suspendidas de las grandes esferas de cristal que conformaban un sistema concéntrico en el cual la tierra era el centro. Posteriormente fueron grandes masas in candescentes que gravitaban según las leyes de Kepler. Hoy son la luz de sistemas solares muy lejanos; algunos de ellos extintos hace muchos millones de años. En este sentido, puede decirse incluso, que lo que observamos es el pasado de sistemas solares situados en espacio-tiempos diferentes.
Palabras de apertura doctorado en educación y cultura ambiental – DECA. Resolución MEN 10166 del 26 de junio de 2014
Authors: López Jiménez Nelson Ernesto
Published: November 2019

SALUDOS A LA DIRECCIÓN DE LA UNIVERSIDAD, A LOS DOCTORAND@S, A LOS ASISTENTES AL ACTO DE INAUGURACIÓN Y UN AGRADECIMIENTO AL DR CARLOS EDUARDO VASCO, por su deferencia al compartir con nosotros sus análisis y reflexiones sobre la formación doctoral en nuestro país.

La historia de las Universidades participantes en este proyecto doctoral, se narra incorporando sucesos ocurridos en un horizonte variopinto que integra desarrollos, avances, frustraciones, alegrías, lagrimas, perdidas, que las constituyen en un proyecto social e histórico que no está concluido, ni se concluirá afortunadamente, la Universidades de la Amazonia, Pamplona, Francisco de Paula y Surcolombiana, son un RETO POR ENFRENTAR Y UN PROCESO POR CONSTRUIR.
Linezolid for the treatment of postneurosurgical infection caused by methicillin-resistant Staphylococcus
Authors: Rebai Lotfi , Fitouhi Nizar , Daghmouri Mohamed Aziz , Bahri Kamel
Published: November 2019

Background:

Postneurosurgical infection (PNSI) is a major problem. Linezolid is a bacteriostatic oxazolidinone antibiotic with a highly activity against Gram-positive cocci resistant to methicillin and a good cerebrospinal fluid penetration. The purpose of this study is to evaluate the efficacy of linezolid in the treatment of PNSI caused by methicillin-resistant Staphylococcus (MRS).

Methods:

We conducted an observational study for all patients over 14 years old and diagnosed with MRS PNSI. Demographic, clinical, and laboratory information were collected prospectively.

Results:

A total of 10 patients with PNSI (6 meningitis, 2 ventriculitis, and 2 subdural empyema) received linezolid. MRS isolated was Staphylococcus aureus in seven cases and Staphylococcus epidermidis in three cases. All isolated microorganisms were susceptible to vancomycin (minimum inhibitory concentration (MIC) = 2 mg/L) and linezolid (MIC = 1). The rate of microbiologic efficacy was 100% for patients with meningitis or ventriculitis. In the case of subdural empyema, focal infection had improved between 14 and 18 days. No adverse effects occurred during this study.

Conclusion:

Our results suggest that linezolid as an alternative to vancomycin for the treatment of PNSI caused by MRS with a high rate of efficacy.
Teaching writing by using Visual, Auditory, Read/Write, And Kinesthetic (VARK) learning style in descriptive text to the seventh grade students of SMPN 2 Jiwan
Authors: Hanurawan Ilham Nugroho
Published: November 2019

Writing is one of the English skills. Teaching writing is a process to improve students' ability to write in English correctly. Descriptive text is text used to describe a person, place or object. The difficulty experienced in teaching writing through descriptive text is the lack of attention of students towards the explanation given by the teacher. To overcome this, researchers applied VARK learning style to teaching writing. VARK learning style is a learning style using all five senses to get information or knowledge in the teaching and learning process. This study aims to explain the application of VARK learning style in teaching writing through descriptive text. The procedures for applying VARK learning style in teaching writing through descriptive text are: (1) The teacher explains the meaning, patterns and characteristics of descriptive text languages, (2) The teacher asks students to make small groups, (3) The teacher gives examples of descriptive texts, ( 4) The teacher gives questions in the form of pictures to students and asks to make descriptive texts, (5) The teacher asks students to show the results of students' work in front of the class. Based on this research, it can be seen that the advantages of VARK learning style is that it can increase student learning interest, student enthusiasm and reciprocity between teacher and students.
The use of literacy approach to teach writing of descriptive text at the seventh grade students of SMPN 1 Ngebel
Authors: Yuliani Tanti
Published: November 2019

The main purpose of teaching learning English in Junior High School to develop the students’ competence and knowledge in four language skills, Speaking, Reading, Listening and Writing. One of the difficult skills is writing. In this research are describe how are the uses, problems, and solutions of the use of Literacy Approach to Teach Writing of Descriptive Text At The Seventh Grade Students of SMPN 1 Ngebel.  Literacy approach is one of the approaches used to teach writing especially in descriptive text because Literacy approach is the ability to read and write. There are some step of teaching writing, they are planning, composing, and revising. This research uses descriptive qualitative research. Participant/Informant of the research are the English teacher and the seventh grade students of SMPN I Ngebel Ponorogo. This research uses purposive sampling technique. The techniques which are used to collect the data are observation, interview, and documentation. Techniques of the data analysis are data reduction, data display and drawing conclusions. The result of the analyzing data indicates that the uses of literacy approach in teaching writing of descriptive text are divided into two steps. The first is preparation steps and the second is learning process. The learning process uses literacy approach includes introduce and giving explanation the descriptive text, give the modal of the descriptive text and have text to analyze, make group work to discussion the students’ ideas, give the chance to make students’ own product and also checking the students’ understanding about the material. Besides, the problem of the use literacy approach in writing of descriptive text are sometimes the students are noisy in the classroom and their vocabulary are still low. The students feel afraid to deliver their opinion and ideas in teaching and learning process. The solution of the use literacy approach in writing of descriptive are the students must make group work of the students’ worksheet, Teacher controls the students and gives scores for students.
A Dual signal On-Off Fluorescent Nanosensor for the Simultaneous Detection of Copper and Creatinine
Authors: Nair Resmi V , S Parvathy R , Ramapurath S Jayasree
Published: November 2019

We report the synthesis and design of a quantum dot based multi analyte sensor by tuning its optical properties such that it has two independent emission profiles, sensitive to two analytes. The sensing has been proven in cellular environment and blood serum. A strip based sensor was also designed which work based on a mobile app which is validated on human blood from 4 volunteers.
Las cinco formas más elegantes de morir en el Universo
Authors: Ramírez-Samperio Juan A.
Published: November 2019

Seguramente todos hemos oído hablar de la hipótesis de la Gran Explosión que dio origen al Universo; sin embargo, ¿podemos imaginar cómo va a ser su final? En el presente artículo se muestran cinco maneras en que la Tierra, el Sistema Solar y el Universo entero pueden llegar a la conclusión de su existencia
monopolist_shiefanny delicia_130419004
Authors: sugiarto Shiefanny delicia
Published: November 2019

a monopoly is occured when a single company can dominate the market. in this case we will analysis little about the surabaya zoo. is the surabaya zoo can be categorized as a monopolist? since it is the only zoo in this city
Indigenous Knowledge on Use of Local Fodder Trees in Mid Hills of West Nepal
Authors: Panthi Mohan P.
Published: November 2019

Fodder shortage (quality as well as quantity) has been found through outmid hills of Nepal. The tree fodder is particularly important as a green, nitrogen supplement to poor quality crop residues during the dry season when feeds are scarce. The nutritional values of fodders differ according to species and season therefore farmers prefer different species for different seasons to feed their livestock. The choice or preference of fodder species by farmers reflects their traditional knowledge on nutritional values, palatability, cultivation easiness and seasonal variability of tree fodder in local environment. The paper highlights an indigenous knowledge system that relates to the quality of tree fodder used by farmers in mid hills of Nepal. In total 69 plant species have been recorded as tree fodder and out of them ten best tree fodders have been listed on the basis of preferences and priority by farmers. Information was gathered through a semi structured open questionnaire by interviewing 85 respondents of different age groups of Arghakhanchi district. Though Focus species was the most abundant among tree fodder, Grewia optiva (locally known as 'phorso') was found the most preferable tree fodder species in the study area.
Training and Skills Development Policy Options for the Changing World of Work
Authors: Jansen Alix J. , White Linda A. , Dhuey Elizabeth , Foster Daniel , Perlman Michal
Published: November 2019

This article offers a critical assessment of empirical knowledge regarding labour market training and skills development in an era of technological disruption. Although exactly which skills and jobs will become obsolete is not known, technological change may cause unemployment to spike and increase the need for retraining. To move toward understanding what policy interventions will be needed in response, in this article we assess the current state of knowledge about Canada’s active labour market policies. We argue that before creating new programs, policy-makers need to learn from existing policy attempts to address labour market disruptions. By analyzing the most recent Employment and Social Development Canada evaluations, we find that quality data and analyses regarding the effectiveness of these programs are lacking. We conclude that research in this area is needed before policy-makers will be able to develop responses to technological disruption.
Non-destructive testing derived parameters for microstructure-based residual service life assessment of aging metallic materials in nuclear engineering
Authors: Acosta Ruth , Boller Christian , Starke Peter , Jamrozy Michael , Knyazeva Marina , Walther Frank , Heckmann Klaus , Sievers Jürgen , Schopf Tim , Weihe Stefan
Published: November 2019

Metallic components in nuclear engineering are exposed to extensive loads such as pressurization and temperature changes which can affect the properties of the material significantly depending on the load spectrum applied. In view of developing a procedure to evaluate the residual service life of metallic components in nuclear power plants aged during service, metastable austenitic steel AISI 347 (German designation: X6CrNiNb18−10) has been considered as an example. To this purpose, total strain-controlled fatigue tests were carried out under different environmental conditions and monitored by continuously measuring thermometric, resistometric, electromagnetic and electrochemical parameters. These parameters provide an information gain in terms of material characterization when compared to conventional strain measurements. Based on these parameters, the short time evaluation procedure StrainLife has been developed, which allows the determination of local S-N curves with a significantly reduced effort as compared with traditional procedures. This method has been implemented into the structural simulation program PROST for the integrity assessment of the components while considering local fatigue properties. This very effective method allows for the determination of local fatigue properties including the strain-specific local scatter of the metallic microstructure properties of the material which has not been possible by traditional means.
Inclusion and microstructure characteristics in steel with TiO2 nanoparticle additions
Authors: Chen Fuhao , Kong Hui , Xu Chen , Shan Mengwei , Qiu Yue , Zhang Jing , Liu Xin
Published: November 2019

TiO2 nanoparticles were directly added to molten steel. The corresponding analyses of inclusion and microstructure were carried out through scanning electron microscopy (SEM) and an energy-dispersive X-ray spectrometer (EDS). On the one hand, a large number of micrometer scale Ti-bearing inclusions were observed. Besides Ti, other elements, such as Al, Mn, Si and S, were present in these inclusions. These phenomena not only confirmed the validity of adding TiO2 nanoparticles but likewise their growth and reactivity. This can be explained by the interaction between TiO2 and a Fe matrix, the decomposition reaction of TiO2 and a higher Gibbs free energy for the nanoparticles. On the other hand, these Ti-bearing inclusions can induce the nucleation of intragranular acicular ferrite. This is similar in appearance to a Ti-bearing inclusion originating through internal precipitation and may be explained by the theory of a Mn-depletion zone.
Connection of discontinuous segments in early functional recovery from thoracic ossification of the posterior longitudinal ligament treated with posterior instrumented surgery
Authors: Ando Kei , Kobayashi Kazuyoshi , Machino Masaaki , Ota Kyotaro , Tanaka Satoshi , Morozumi Masayoshi , Ito Sadayuki , Kanbara Shunsuke , Inoue Taro , Ishiguro Naoki , Imagama Shiro
Published: November 2019

OBJECTIVE

The objective of this study was to investigate the relationship between morphological changes in thoracic ossification of the posterior longitudinal ligament (T-OPLL) and postoperative neurological recovery after thoracic posterior fusion surgery. Changes of OPLL morphology and postoperative recovery in cases with T-OPLL have not been examined.

METHODS

In this prospective study, the authors evaluated data from 44 patients (23 male and 21 female) who underwent posterior decompression and fusion surgery with instrumentation for the treatment of T-OPLL at our hospital. The patients’ mean age at surgery was 50.7 years (range 38–68 years). The minimum duration of follow-up was 2 years. The location of thoracic ossification of the ligamentum flavum (T-OLF), T-OLF at the OPLL level, OPLL morphology, fusion range, estimated blood loss, operative time, pre- and postoperative Japanese Orthopaedic Association (JOA) scores, and JOA recovery rate were investigated. Reconstructed sagittal multislice CT images were obtained before and at 3 and 6 months and 1 and 2 years after surgery. The basic fusion area was 3 vertebrae above and below the OPLL lesion. All parameters were compared between patients with and without continuity across the disc space at the OPLL at 3 and 6 months after surgery.

RESULTS

The preoperative morphology of OPLL was discontinuous across the disc space between the rostral and caudal ossification regions on sagittal CT images in all but one of the patients. Postoperatively, these segments became continuous in 42 patients (97.7%; occurring by 6.6 months on average) without progression of OPLL thickness. Patients with continuity at 3 months had significantly lower rates of diabetes mellitus (p < 0.05) and motor palsy in the lower extremities (p < 0.01). The group with continuity also had significantly higher mean postoperative JOA scores at 3 (p < 0.01) and 6 (p < 0.05) months and mean JOA recovery rates at 3 and 6 months (both p < 0.01) after surgery.

CONCLUSIONS

Preoperatively, discontinuity of rostral and caudal ossified lesions was found on CT in all patients but one of this group of 44 patients who needed surgery for T-OPLL. Rigid fixation with instrumentation may have allowed these segments to connect at the OPLL. Such OPLL continuity at an early stage after surgery may accelerate spinal cord recovery.
The utility of radionucleotide imaging in the surgical management of axial neck pain from cervical facet joint arthropathy
Authors: Witiw Christopher D. , Tsapenko Nataliya , Traynelis Vincent C.
Published: November 2019

OBJECTIVE

Axial neck pain is common and often debilitating. Diagnosis of the specific pain source can be a challenge, and this confounds effective treatment. Cervical facet arthropathy is implicated in many of these cases. The diagnosis is readily made on conventional cross-sectional imaging modalities, particularly CT imaging. However, this modality falls short in determining if an osteoarthritic facet joint is truly the source of symptoms. Radionucleotide imaging presents a noninvasive radiological adjunct to conventional cross-sectional imaging in the workup of patients with suspected facetogenic pain. Herein, the authors present the patient-reported outcomes (PROs) following posterior instrumented arthrodesis of the subaxial cervical spine from a consecutive case series of patients with a diagnosis of cervical facet joint arthropathy and a concordant positive radionucleotide tracer uptake.

METHODS

The clinical case series of patients treated by the senior author at a single tertiary care institution between September 2014 and April 2018 was reviewed. Patients were selected for inclusion if their primary symptom at presentation was axial neck pain without neurological deficits and if CT imaging revealed facet arthropathy of the cervical spine. These patients underwent radionucleotide imaging in the form of a planar 99mTc methylene diphosphonate (99mTc MDP) bone scintigraphy study. Those with a finding of radionucleotide tracer uptake at a location concordant with the facet arthropathy were selected to undergo posterior cervical instrumented arthrodesis of the affected levels. PROs were recorded at the time of surgical consultation (i.e., after nonoperative treatment) and at 6 weeks, 3 months, 6 months, and 1 year following surgery. These included neck and arm pain, the Neck Disability Index (NDI) and the 12-Item Short Form Health Survey responses.

RESULTS

A total of 11 patients were included in this retrospective case series. The average reported neck pain and NDI scores were high at baseline; 7.6 ± 2.3 and 37.1 ± 13.9 respectively. Twelve months after surgical intervention, a significant decrease in reported neck pain of −4.5 (95% CI −6.9, −2.1; p = 0.015) and a significant decrease in NDI of −20.0 (95% CI −29.4, −10.6; p = 0.014) was observed.

CONCLUSIONS

This case series represents the largest to date of patients undergoing surgical arthrodesis following a finding of facet arthropathy with a concordant positive radioisotope image study. These observations add support to a growing body of evidence that suggests the utility of radioisotope imaging for identification of a facetogenic pain generator in patients with primary axial neck pain and a finding of cervical facet arthropathy. These preliminary data should serve to promote future prospective, controlled studies on the incorporation of radionucleotide imaging into the workup of patients with suspected facetogenic pain of the cervical spine.
Oncologic benefits of dural resection in spinal meningiomas: a meta-analysis of Simpson grades and recurrence rates
Authors: Barber Sean M. , Konakondla Sanjay , Nakhla Jonathan , Fridley Jared S. , Xia Jimmy , Oyelese Adetokunbo A. , Telfeian Albert E. , Gokaslan Ziya L.
Published: November 2019

OBJECTIVE

While resection of the dural attachment has been shown by Simpson and others to reduce recurrence rates for intracranial meningiomas, the oncological benefit of dural resection for spinal meningiomas is less clear. The authors performed a systematic analysis of the literature, comparing recurrence rates for patients undergoing various Simpson grade resections of spinal meningiomas to better understand the role of dural resection on outcomes after resection of spinal meningiomas.

METHODS

The PubMed/Medline database was systematically searched to identify studies describing oncological and clinical outcomes after Simpson grade I, II, III, or IV resections of spinal meningiomas.

RESULTS

Thirty-two studies describing the outcomes of 896 patients were included in the analysis. Simpson grade I, grade II, and grade III/IV resections were performed in 27.5%, 64.6%, and 7.9% of cases, respectively. The risk of procedure-related complications (OR 4.75, 95% CI 1.27–17.8, p = 0.021) and new, unexpected postoperative neurological deficits (OR ∞, 95% CI NaN–∞, p = 0.009) were both significantly greater for patients undergoing Simpson grade I resections when compared with those undergoing Simpson grade II resections. Tumor recurrence was seen in 2.8%, 4.1%, and 39.4% of patients undergoing Simpson grade I, grade II, and grade III/IV resections over a mean radiographic follow-up period of 99.3 ± 46.4 months, 95.4 ± 57.1 months, and 82.4 ± 49.3 months, respectively. No significant difference was detected between the recurrence rates for Simpson grade I versus Simpson grade II resections (OR 1.43, 95% CI 0.61–3.39, p = 0.43). A meta-analysis of 7 studies directly comparing recurrence rates for Simpson grade I and II resections demonstrated a trend toward a decreased likelihood of recurrence after Simpson grade I resection when compared with Simpson grade II resection, although this trend did not reach statistical significance (OR 0.56, 95% CI 0.23–1.36, p = 0.20).

CONCLUSIONS

The results of this analysis suggest with a low level of confidence that the rates of complications and new, unexpected neurological deficits after Simpson grade I resection of spinal meningiomas are greater than those seen with Simpson grade II resections, and that the recurrence rates for Simpson grade I and grade II resections are equivalent, although additional, long-term studies are needed before reliable conclusions may be drawn.
PENGARUH FAKTOR-FAKTOR TEKNIS DAN ORGANISASIONAL TERHADAP PENGEMBANGAN SISTEM PENGUKURAN KINERJA (Studi Pada OPD Kota Pekanbaru)
Authors: Putri Gusmarila eka
Published: November 2019

Berdasarkan instruksi presiden nomor 7 tahun 1999 tentang akuntabilitas kinerja instansi pemerintah dan Keputusan Kepala Lembaga Administrasi Negara (LAN) No.589/IX/6/Y/1999 tentang Pedoman Penyusunan Pelaporan Akuntabilitas Kinerja Instansi Pemerintah, yang telah diperbaiki dengan Keputusan LAN Nomor 239/IX/6/8/2003. Tahun 2006 pemerintah mengeluarkan peraturan lain yang mendukung implementasi sistem pengukuran kinerja di Indonesia, yakni PP RI No. 8 Tahun 2006 tentang Pelaporan Keuangan dan Kinerja Instansi Pemerintah. Selanjutnya ada PERMENPAN RB No. 29 Tahun 2010 tentang Pedoman Penyusunan Penetapan Kinerja dan Pelaporan AKIP. Dikeluarkannya PP RI Nomor 8 Tahun 2006 dan PERMENPAN RB Nomor 29 tahun 2010 menunjukkan keseriusan pemerintah terhadap perbaikan kinerja organisasi pemerintah dan mendorong dibangunnya sistem manajemen organisasi pemerintah yang berbasis kinerja (performance-based management) di Indonesia

Namun faktanya, kemampuan sistem pengukuran kinerja untuk meningkatkan kinerja, transparansi, dan akuntabilitas kinerja instansi pemerintah (AKIP) masih sering diperdebatkan atau dipertanyakan. Situasi ini cukup masuk akal karena beberapa hasil penelitian memang masih menunjukkan adanya masalah dalam implementasi sistem pengukuran kinerja. Permasalahan muncul pada tahap pengembangan sistem pengukuran kinerja maupun pada tahap penggunaan hasil dari implementasi sistem pengukuran kinerja

Penelitian ini bertujuan untuk menguji beberapa faktor yang berpengaruh terhadap pengembangan sistem pengukuran kinerja pada OPD Kota Pekanbaru. Faktor-faktor tersebut terdiri dari faktor teknis dan organisasional. Faktor teknis meliputi keterbatasan sistem informasi, dan faktor organisasional meliputi komitmen manajemen, otoritas pengambilan keputusan, serta budaya organisasi. Penelitian ini dilakukan menggunakan metode survey dengan mendistribusikan kuesioner kepada pejabat eselon 2, 3, dan 4 yang terlibat dan bertanggungjawab dalam pembuatan Renstra dan Lakip pada OPD Kota Pekanbaru. Dengan metode purposive sampling, kemudian dilakukan analisis data menggunakan analisis regresi berganda.

Hasil penelitian ini menemukan bahwa keterbatasan sistem informasi tidak terbukti berpengaruh negatif terhadap pengembangan sistem pengukuran kinerja, komitmen manajemen, otoritas pengambilan keputusan, dan budaya organisasi terbukti berpengaruh positif terhadap pengembangan sistem pengukuran kinerja.
ANALISIS EKSPOR KOPI INDONESIA KE NEGARA-NEGARA ASEAN
Authors: Ginting Christian Putra , Kartiasih Fitri
Published: November 2019

Menanggapi era Masyarakat Ekonomi ASEAN (MEA), produk pertanian Indonesia terutama kopi memiliki nilai ekonomis yang dapat dikembangkan dan diperdagangkan di kawasan pasar ASEAN dalam rangka meningkatkan pangsa pasar dan diversifikasi negara tujuan ekspor produk Indonesia. Tujuan dari penelitian ini adalah untuk memberikan gambaran produksi dan ekspor kopi di negara-negara ASEAN, menganalisis kinerja ekspor kopi Indonesia ke negara-negara ASEAN serta menganalisis faktor-faktor yang berpengaruh terhadap ekspor kopi Indonesia pada periode tahun 1997-2014. Produksi kopi Indonesia selama 12 tahun terakhir menunjukkan stagnansi pada kisaran 640 – 700 ribu ton. Namun ekspor kopi menunjukkan perkembangan yang meningkat di negara Malaysia, Thailand, dan Vietnam serta ekspor yang stagnan dan cenderung menurun di negara Filipina dan Singapura. Berdasarkan indeks RCA dan EPD, kinerja ekspor kopi Indonesia memiliki keunggulan komparatif tertinggi di negara Malaysia yang juga dibuktikan dengan posisi negara tersebut bersama dengan negara Vietnam di kuadran rising star. Dari hasil analisis regresi data panel pada tingkat signifikansi 5 persen, ekspor kopi Indonesia di negara-negara ASEAN dipengaruhi oleh variabel harga ekspor riil, harga teh, PDB negara tujuan, kurs riil negara tujuan, dan indeks daya saing RCA. Sementara itu, variabel produksi kopi domestik tidak signifikan berpengaruh terhadap ekspor kopi Indonesia.

Kata Kunci: ekspor, kopi, daya saing, ASEAN, regresi data panel
DETERMINASI PERTUMBUHAN EKONOMI BERKELANJUTAN DI ASEAN-3
Authors: Soekapdjo Soeharjoto , Maria esther Astrid
Published: November 2019

Penelitian ini bertujuan untuk mengetahui determinasi pertumbuhan ekonomi berkelanjutan di ASEAN-3, pada 2000-2016. Metode yang digunakan regresi data panel, dengan variabel dependen PDB per kapita dan independen inflasi, pembentukan modal, populasi penduduk, total tabungan, dan penipisan sumber daya alam. Adapun hasilnya pembentukan modal, total tabungan mempunyai pengaruh yang positif dan signifikan terhadap PDB per kapita, sedangkan penipisan sumber daya alam, inflasi dan populasi penduduk mempunyai pengaruh yang negatif dan signifikan terhadap PDB per kapita. Untuk menjaga pertumbuhan ekonomi yang berkelanjutan, dibutuhkan inovasi guna meningkatkan efisiensi, kualitas sumber daya manusia, daya tarik investasi dan tabungan, antisipasi dari gejolak ekonomi makro, serta kerjasama intra dan ekstra ASEAN.

Kata Kunci: Pertumbuhan  ekonomi  berkelanjutan, ASEAN-3,  PDB  per  kapita,  inflasi, pembentukan  modal, populasi  penduduk, total  tabungan, penipisan  sumber daya alam.
Hauswirtschaft 4.0?! Chancen und Herausforderungen der Digitalisierung aus Sicht der beruflichen Bildung
Authors: Brutzer Alexandra
Published: November 2019

Im folgenden Beitrag werden ausgewählte Ergebnisse aus einem in den Jahren 2016 bis 2018 durchgeführten Berufescreening vorgestellt. An den Beispielen von 14 Ausbildungsberufen wurde den Fragen nachgegangen, welche Wirkungen die Digitalisierung auf Berufsprofile hat und welche Schlussfolgerungen sich daraus für die berufliche Aus- und Weiterbildung ergeben.
Molecular Detection of Group C Rotavirus in Environmental Samples in Giza, Egypt
Authors: Shaheen Mohamed N.F. , Elmahdy Elmahdy M.
Published: November 2019

Group C rotavirus (RVC) has been identified as important enteric pathogen associated with acute gastroenteritis in human, especially in outbreaks. To evaluate the presence of RVC in environmental samples, one-year study was performed in Giza, Egypt. A total of 64 sewage (raw and treated) with 32 sewage sludge samples from Zenin wastewater treatment plant (WWTP) and 72 drainage water with 24 sediment samples from El-Rahawy drain which receives the sewage effluent of Zenin WWTP were collected. After concentration of the collected samples, semi-nested RT-PCR using specific primers was used for amplification of the RVC VP7 gene. The overall detection rates were 21.9% (7 of 32) for the raw sewage, 6% (2 of 32) for the treated sewage, 12.5% (4 of 32) for the sewage sludge, 22% (16 of 72) for the drainage water, and 16.6% (4 of 24) for the drainage sediment. In addition, the virus was abundant in cold months (October-March) and less prevalent in hot months (April-September). The widespread occurrence of RVC in this study reflects that RVC circulates at a relatively high frequency in the Egyptian population.
Estimating Summer Emissions from Land Transportation Vehicles Moving Along the Urban Roads
Authors: Krylov Petr M. , Volodin Oleg N. , Zaitsev Gleb A. , Nekrasova Larisa P. , Klyuchnikov Denis A.
Published: November 2019

The industrial and transport effect on the environment is distinguished most significantly by the formation of technogeneous geochemical anomalies in the urban landscape. This study was conducted within the boundaries of urban agglomeration (Penza city) for two years (2014 and 2015) during the summer (June to August). To determine the effect that the distance from road and the amount of heavy metal emissions have, samples were extracted at a distance of 10, 20, 30, 40, 50 and 60 metres from the roadway. There were three sampling points at each sampling line, with a 3 to 4-metre space between them. The year-long measurements make up a number over 20.000. In Penza, the flow of traffic typically varies between 3 and 3943 cars per hour. When produced in significant amounts, heavy metal emissions from vehicles—exhaust emissions (Pb, Cu, Ni), particulate matter emissions (Cu, Ni, Zn), emissions from plastics and paint (Zn, Cd), and tirewear emissions (Zn)—accumulate in the roadside area, transform and further migrate along the food chains. All road categories show a significant elevation in the background and emission limit values for all heavy metals studied. The most dramatic rise was recorded for Cu and it was 5.09- to 19.11-fold. The concentration of Ni, Zn and Pb exceeds the acceptable rate 1.17- 8.79-fold. The concentration of carbon monoxide decreases with distance from the road. Street ranking by car hazard shows that all main urban streets with regulated traffic are category 1 hazard sources of emission, mainly due to lead compounds (%). Between spring and summer, the traffic flow increases 1.3- to 2-fold and the hazard category of roads rises (under 1.5-fold). Significant changes in the traffic infrastructure and vehicle replacement compensate for the negative impact of vehicles on air quality in Penza, which was initially caused by the increase in the number of vehicles on the road and by the subsequent overload of the transport network. The increase in the queue length and time did not entail the emission growth. On the contrary, since 2014, Penza has been showing a decreasing trend and since 2015, the total amount of emissions from motor vehicles has been remaining at a stabilized point.
Abundance of Macrobenthos with Special Reference to Some Physico-Chemical Parameters of South-Eastern Coastal Area, Bangladesh
Authors: Barua Prabal , Meah Md. Mohasin , Rahman Syed Hafizur
Published: November 2019

Benthic communities are important to any aquatic ecosystem and form important food source for most organisms especially fish. The study about macro benthos was carried out in a canal of south-eastern coast of Bangladesh with some physico-chemical parameters of water and soil during post and pre-monsoon seasons. The canal originates from hilly areas and opens into the Bay of Bengal. Polychaetes were the most abundant group followed by Oligocheates Bivalves crabs during post-monsoon. Oligocheates were the most abundant group followed by Polychaetes, Bivalves during pre-monsoon. Salinity showed positive significant relationship with the Polycheates and as well as Phosphate-Phosphorus. A negative significant relationship was found between Chemical Oxygen Demand (COD) and Oligocheates abundance in the investigated canal and a positive relationship was found between Total Suspended Solids and Oligocheates abundance. There was no relationship among the parameters of water as well as soil and crab abundance. The abundance of macro benthos is useful indicators of the condition of the canal and of the canal habitat as a whole. The effect of anthropogenic induced stressors had resulted in an unstable physically controlled environment characterized by a low density of macrobenthos.
Break Point Analysis of Particulate Matter
Authors: Bhardwaj Avi , Deep Vikas , Mehrotra Deepti
Published: November 2019

Fine particles like PM2.5 are known to trigger or exacerbate unending ailment, for example, asthma, heart assault, bronchitis and other respiratory issues. The factors affecting the density of PM2.5 in atmosphere are temperature, humidity and pressure. Other factors like burning fire crackers, thrashes, etc. compliments them which leads to adverse effect of PM2.5 on mankind. We cannot control the natural activities of temperature, humidity and pressure but we can at least prevent complimenting them by knowing at what duration of a year there is sudden change in density of PM2.5 in environment due to these factors. In this research, prediction of breakpoint of PM2.5 density in a year with respect to these factors using segment analysis is being tried.
What is Semantic Search? And why is it important?
Authors: Kasenchak Robert T.
Published: November 2019

“Semantic Search” is a term used to describe a variety of approaches 1 to search using techniques beyond (or in addition to) traditional text- and keyword-matching functionality for information retrieval. This short article undertakes to explicate some of the sundry strategies encompassed under this rubric and, further, to briefly explain their potential advantages. Of particular interest is the application of these strategies in scholarly publishing, as various aspects of Semantic Search are suited to tackle the specific retrieval problems presented by a large and complex corpus. In particular, examples from scholarly publishing platforms (as well as search engines and other examples) will be used to illustrate the problems - and solutions - particular to the learned publishing industry.
Sotalol as an effective adjunct therapy in the management of supraventricular tachycardia induced fetal hydrops fetalis
Authors: Refaat Marwan , El Dick Joud , Sabra Mohammad , Bitar Fadi , Tayeh Christelle , Abutaqa Mohamad , Arabi Mariam
Published: November 2019

Sustained fetal supraventricular tachycardia (SVT) complicated by hydrops fetalis carries a significant risk of morbidity and mortality. While there is no clear consensus on first- and second-line therapy options for the management of fetal SVT with or without hydrops fetalis, there exists significant nonrandomized experience with a number of antiarrhythmic agents that has founded the basis for management. Furthermore, recently published meta-analyses and ongoing multicenter prospective studies have aimed to bridge the gap in the literature. We report two cases of sustained fetal SVT with severe secondary hydrops fetalis managed successfully with flecainide-sotalol combination therapy in one case and sotalol-digoxin combination therapy in the second and review the literature for the management of fetal SVT.
乡村振兴战略中的农业地位与农业发展探究
Authors: 盛 玉林
Published: November 2019

就现阶段我国经济社会发展而言,乡村衰落现象日益明显,基于这种情形,党中央及时启动了乡村振兴战略,并出台了相应的政策及规定,对于促进我国经济社会的长效发展有着非常积极的意义。该文从理论、国际视域出发,对乡村振兴战略中的农业地位及农业发展进行了分析,并在此基础上为我国乡村振兴战略中的农业发展措施进行研究。
探究果树栽培技术对提高果实品质的影响
Authors: 叶 永伟 , 高 卫东 , 卓 玉宝 , 陈 涵丰
Published: November 2019

众所周知,果实品质是衡量果树栽培技术市场价值的关键所在。随着人们生活水平的不断提升,高品质水果需求量越来越高,加快果树栽培技术水平提升成为现代农业发展的重要趋势。为全面提高水果种植产业的市场竞争力,促进水果品质提升,加强果树栽培技术研究具有十分重要的意义。本文就果树栽培技术对果实品质影响进行全面探讨和研究,希望促进水果种植产业的科学稳定发展。
内蒙古兴安盟乌兰浩特市园林管理所
Authors: 胡 匡明
Published: November 2019

在城市发展中,园林植物至关重要,能够对城市空间进行美化,这主要是因为园林植物色彩丰富、种类频繁、形态各异,在城市发展中对园林植物进行应用,能够为人们营造一种四季如春的景象。本文主要对园林树木在城市建设中的作用进行了研究。
气相色谱法测定水中有机磷农药和阿特拉津
Authors: 张 冬未
Published: November 2019

在具有持续污染性的有机农药-有机氯农药被禁用后,当前我国农业劳作生产中最常见的农药种类为有机磷农药,其在当前市场中的占比非常大,由于有机磷农药对于人体的毒害作用比较大,并且在中毒后救治过程比较复杂,所以对相关水源进行有机磷农药的测定是非常必要的,阿特拉津作为当前使用频率较高的除草剂,其化学性质决定了其也具有较强的危害作用,所以对水中阿特拉津的测量也应该进行重点关注。
A Domestic Space: The Central and Eastern Carpathians in the Polish Tourist and Local Lore Discourse, 1918–1939
Authors: Wierzejska Jagoda
Published: November 2019

The article presents various ways of ideologization of the Central (Boyko and Lemko regions) and Eastern (Hutsul region) Carpathians in interwar Poland. After the Polish-Ukrainian War (1918–1919), that part of the Carpathian mountain range was situated in the Second Polish Republic. In contrast to the Tatras, which played the role of Polish national landscape, the Carpathians were alien to Poles in terms of ethnicity and culture. Thus, the Polish authorities, as well as touristic and local lore organizations, sought and largely managed to transform these mountains into a domestic landscape, which was no center of national identity but constituted an important spot on the mental map of the Polish national community, recognized as an undeniable part of Polish statehood. The article shows how the exoticization of the Carpathians, state holidays, and the development of state-funded mass tourism resulted in the increased sense of familiarity between Polish lowlanders and highlanders and, consequently, the symbolic inscription of the Carpathians into the Polish domain and common imagination.
Who Has the Right to Decide? Pula and the Problem of Demilitarized Urban Zone
Authors: Falski Maciej
Published: November 2019

In 2007, the Croatian army decided to close its military base on the Muzil peninsula, which is a part of the city of Pula. Muzil hosts about 20 percent of the city; moreover, it is located in a very attractive area with the view on the seaside and the city’s historical center. After the city received the area, negotiations began to decide about the future of the demilitarized land. This paper discusses the attitudes of two main actors of the public debate: the city council supported by the central authorities of Croatia and a nongovernmental organization established by a number of residents of Pula. The former wanted to transform the demilitarized area intoan elite tourist resort, while the latter proposed opening the peninsula to residents to rei ntegrate the postmilitary area with the city. The two attitudes are related to different ideas of usefulness and the city as a community of residents. The right to space reflects the fundamental question of participation in the public debate. Moreover, Pula can be seen as an example of the city, where extensive and uncontrolled development of tourism violates the interests of the local community.
Semi-bleached paper and fermentation products from a larch biorefinery
Authors: HÖRHAMMER HANNA , BEREZINA OKSANA , HILTUNEN EERO , GRANSTRÖM TOM , HEININGEN ADRIAAN VAN
Published: November 2019

This study was focused on the products from a larch biorefinery, specifically bleached paper and different fermentation products. Siberian larch (Larix sibirica Lebed.) wood chips were treated with water in a pre-extraction (PE) stage. The larch extract was removed by drainage and fermented into different products. Eight different bacteria strains were tested. The extracted wood chips were mildly washed before kraft pulping with polysulfide (PS) and anthraquinone (AQ). The PE-PSAQ pulps were bleached to about 80% brightness. Laboratory paper sheets were made and tested for different paper properties, and a conventional larch kraft pulp was also prepared as reference. The larch PE-PSAQ paper and the larch kraft paper had similar properties. The removal of a significant amount of hemicelluloses from the wood chips before pulping was not a detriment to the paper properties.
Effects of loblolly pine tree age and wood properties on linerboard-grade pulp yield and sheet properties: Part 2
Authors: MCDONOUGH THOMAS J. , COURCHENE CHARLES E. , WHITE DAVID E. , SCHIMLECK LAURENCE , PETER GARY
Published: November 2019

Results are presented on the relationships among loblolly pine tree age and wood characteristics and the properties of pulp obtained when the trees were chipped and pulped. We selected 13-year-old and 22-year-old loblolly pine trees (18 of each) to represent specified ranges of specific gravity and lignin content. The trees were further characterized by chemical analysis, near infrared (NIR) spectroscopy, and SilviScan analysis of fiber dimensions and properties before being pulped by the kraft process. Handsheets formed from the resulting pulps were characterized in terms of sheet properties that are important for linerboard grades. Multiple regression analysis was then used to identify wood characteristics that most influenced sheet properties and to derive equations relating sheet properties to tree age, specific gravity, and chemical composition. We also developed calibrations so that sheet properties could be predicted from NIR spectroscopic analysis of wood. Nearly all differences in properties of pulps made from 13- and 22-year-old trees were attributable to differences in fundamental wood properties. Sheet properties could be estimated by measuring their near NIR spectra.
The effect of roller taper on webs
Authors: YURTCU HASAN HUSEYIN , BEISEL JOSEPH A. , GOOD JAMES K.
Published: November 2019

Webs moving through process machinery encounter several rollers, each of which might have unintentional taper in radius. The taper might have resulted from machining or from wear. The objectives of this study were to show, for a particular web, the level of cross machine direction registration error that might result for a given roller taper, the level of taper that will induce web trough instability in free spans, and the level of taper that will induce web wrinkle instabilities on rollers.
From tree cutting to pulping: the impact of storage time on pulp mill economics
Authors: SAMISTRARO GISELY , HART PETER W.
Published: November 2019

Variability in wood properties has a major impact on pulp quality and the cost associated with pulp production. Frequently, accounting data for green tons of wood across the mill scales and the tons of pulp produced suggest that the pulp mill has affected the pulp yield because the tons of purchased wood divided by the tons of pulp produced changes. The current work examines the impact of the time — from when a tree is harvested in the forest to the time it is brought across the scales at the mill — on accounting yield and operating cost. Percentage weight loss (assumed to be changes in moisture content) were determined for Pinus taeda, Eucalyptus dunni, and Eucalyptus grandis over a 12-week period in the winter and summer seasons. Wood samples were obtained immediately after being harvested. The percentage weight loss within the first 5 days of storage varied from 2% to 13%, depending upon species and season, and reached 36% after 11 weeks of storage. For a 1000 tons/day mill with a 55% pulping yield on o.d. fiber, the difference between using fresh-cut wood verses cut trees that have been stored for 11 weeks is 1130 green tons. Assuming the mill pays $45/green ton, the change in green log usage between fresh-cut and 11-week-old logs can cost the mill US$50,850 per day.
The role of copper ions in hydrogen peroxide bleaching: Their origin, removal, and effect on pulp quality
Authors: LOUREIRO PEDRO E.G. , DUARTE SANDRINE , EVTUGUIN DMITRY V. , CARVALHO M. GRAÇA V.S.
Published: November 2019

This study puts particular emphasis on the role of copper ions in the performance of hydrogen peroxide bleaching (P-stage). Owing to their variable levels across the bleaching line due to washing filtrates, bleaching reagents, and equipment corrosion, these ions can play a major role in hydrogen peroxide decomposition and be detrimental to polysaccharide integrity. In this study, a Cu-contaminated D0(EOP)D1 prebleached pulp was subjected to an acidic washing (A-stage) or chelation (Q-stage) before the alkaline P-stage. The objective was to understand the isolated and combined role of copper ions in peroxide bleaching performance. By applying an experimental design, it was possible to identify the main effects of the pretreatment variables on the extent of metals removal and performance of the P-stage. The acid treatment was unsuccessful in terms of complete copper removal, magnesium preservation, and control of hydrogen peroxide consumption in the following P-stage. Increasing reaction temperature and time of the acidic A-stage improved the brightness stability of the D0(EOP)D1AP bleached pulp. The optimum conditions for chelation pretreatment to maximize the brightness gains obtained in the subsequent P-stage with the lowest peroxide consumption were 0.4% diethylenetriaminepentaacetic acid (DTPA), 80ºC, and 4.5 pH.