scholarly journals Early Development of Graphical Literacy through Knowledge Building

2010 ◽  
Vol 36 (1) ◽  
Author(s):  
Yongcheng Gan ◽  
Marlene Scardamalia ◽  
Huang-Yao Hong ◽  
Jianwei Zhang
Keyword(s):  
Scientific Literacy ◽  
Knowledge Building ◽  
Source Information ◽  
Aesthetic Quality ◽  
Graphical Literacy ◽  
Grade 3 ◽  
And Performance ◽  
One Year ◽  
End Of Grade ◽  
Effective Representation

This study examined growth in graphical literacy for students contributing to an online, multimedia, communal environment as they advanced their understanding of biology, history and optics. Their science and history studies started early in Grade 3 and continued to the end of Grade 4; students did not receive instruction in graphics production, nor were they required to produce graphics. Results show that students spontaneously produced graphics that advanced along seven dimensions, including effective representation of complex ideas, use of source information and captions, and aesthetic quality. On average, the scores for the seven dimensions were higher for Grade 4 students with two years of experience with Knowledge Building pedagogy and technology (Knowledge Forum®) than for Grade 6 students with one year of experience. The overall pattern of results suggests reciprocal enhancement of graphical, textual, digital, and scientific literacy, with students exceeding expectations by available norms, and performance enhanced through extended Knowledge Building experience.

scholarly journals ANALISIS KINERJA PENURUNAN DEFORESTASI DI 10 IZIN HUTAN DESA KECAMATAN BATU AMPAR

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Denni Nurdwiansyah ◽  
Gusti Hardiansyah ◽  
Emi Roslinda
Keyword(s):  
Survey Method ◽  
Social Forestry ◽  
Improve Performance ◽  
Deforestation Rates ◽  
Long Run ◽  
The Social ◽  
And Performance ◽  
One Year ◽  
The Village ◽  
Forestry Programs

The effectiveness of devolution policies through social forestry programs in village forest schemes is still being debated at regional, national, and international levels. It departs from the fact that the community has limited resources in managing forests in the long run (35 years). The background of this research is to measure the implementation of devolution policy in 10 granted village forest licenses in the sub-district of Batu Ampar, Kubu Raya District, and its relationship with deforestation rates. The study was conducted by survey method and data collection with literature studies and observations. Observation aims to measure the biophysical condition of the forest as well as the social and economic conditions of the community in the village. The data is processed and analyzed using spatial analysis and performance analysis. The results showed that the devolution policy through the issuance of 10 village forest licenses was proven to be able to improve performance in reducing deforestation, especially after one year of the village forest permits were granted. Keywords: devolution, social forestry, village forest, deforestation, performance AbstrakEfektifitas kebijakan devolusi melalui program perhutanan sosial skema hutan desa masih menjadi perdebatan di level regional, nasional, dan internasional. Hal ini berangkat dari fakta keterbatasan sumber daya yang dimiliki masyarakat dalam mengelola hutan dalam jangka waktu panjang (35 tahun). Penelitian bertujuan untuk mengurai implementasi kebijakan devolusi di 10 izin hutan desa Kecamatan Batu Ampar, Kabupaten Kubu Raya, dan pengaruhnya terhadap laju deforestasi. Penelitian dilakukan dengan metode survei. Pengumpulan data dengan studi literatur dan observasi. Observasi bertujuan untuk mengetahui kondisi biofisik hutan serta kondisi sosial dan ekonomi masyarakat di desa. Data-data diolah dan dianalisis menggunakan analisis spasial dan analisis kinerja. Hasil penelitian menunjukan kebijakan devolusi melalui pemberian 10 izin hutan desa telah terbukti secara kumulatif mampu meningkatkan kinerja positif dalam penurunan deforestasi, terutama setelah satu tahun izin hutan desa diberikan.Kata kunci: devolusi, perhutanan sosial, hutan desa, deforestasi, kinerja

scholarly journals Fog and rain attenuation characterization and performance of terrestrial free space optical communication in Akure, Nigeria

2020 ◽  
Vol 4 (3) ◽  
pp. 125-134
Author(s):  
Ajewole M. O ◽  
Owolawi P. A ◽  
Ojo J. S ◽  
Adetunji R. M.
Keyword(s):  
Free Space ◽  
Communication Systems ◽  
Outer Space ◽  
Rain Attenuation ◽  
Integration Time ◽  
Free Space Optical ◽  
High Data ◽  
Space Optical Communication ◽  
And Performance ◽  
One Year

Reliable broadband communication requires secure high data rate and bandwidth links. With the observedincrease in broadband users, known communication systems such as RF and microwave links cannot promise suchrequirements due to link interference and low bandwidth. A current communication system that promises suchrequirements and more is Free Space Optical (FSO) communication. This system basically involves the transmissionof signal-modulated optical radiation from a transmitter to a receiver through the atmosphere or outer space. However,location-variant atmospheric channel degrades the performance of an FSO system under severe atmosphericconditions, thus necessitating local atmospheric attenuation studies.This paper presents the characterization of both fog- and rain-induced attenuation and the performance ofan FSO system in a terrestrial terrain at Akure, Nigeria. One-year archived visibility data and in-situ measured 1-minute integration time rain rate data obtained from Nigerian Meteorological Agency (NIMET) and the Departmentof Physics, Federal University of Technology, Akure were used to compute the fog- and rain-induced specificattenuations using Kruse model and Carboneur model respectively. The performance of the FSO system is analyzedthrough link margin by using the parameters of a commercial optical transceiver, Terescope 5000.

Hemiarthroplasty proximal femoral endoprostheses following tumour reconstruction

2018 ◽  
Vol 100-B (1) ◽  
pp. 101-108 ◽  
Author(s):  
J. D. Stevenson ◽  
V. S. Kumar ◽  
G. L. Cribb ◽  
P. Cool
Keyword(s):  
Revision Surgery ◽  
Pathological Fracture ◽  
Bone Erosion ◽  
Bone Tumour ◽  
Early Migration ◽  
Medial Migration ◽  
Primary Bone ◽  
Grade 3 ◽  
One Year

AimsDislocation rates are reportedly lower in patients requiring proximal femoral hemiarthroplasty than for patients undergoing hip arthroplasty for neoplasia. Without acetabular replacement, pain due to acetabular wear necessitating revision surgery has been described. We aimed to determine whether wear of the native acetabulum following hemiarthroplasty necessitates revision surgery with secondary replacement of the acetabulum after proximal femoral replacement (PFR) for tumour reconstruction.Patients and MethodsWe reviewed 100 consecutive PFRs performed between January 2003 and January 2013 without acetabular resurfacing. The procedure was undertaken in 74 patients with metastases, for a primary bone tumour in 20 and for myeloma in six. There were 48 male and 52 female patients, with a mean age of 61.4 years (19 to 85) and median follow-up of two years (interquartile range (IQR) 0.5 to 3.7 years). In total, 52 patients presented with a pathological fracture and six presented with failed fixation of a previously instrumented pathological fracture.ResultsAll patients underwent reconstruction with either a unipolar (n = 64) or bipolar (n = 36) articulation. There were no dislocations and no acetabular resurfacings. Articular wear was graded using the criteria of Baker et al from 0 to 3, where by 0 is normal; grade 1 represents a narrowing of articular cartilage and no bone erosion; grade 2 represents acetabular bone erosion and early migration; and grade 3 represents protrusio acetabuli. Of the 49 patients with radiological follow-up greater than one year, six demonstrated grade 1 acetabular wear and two demonstrated grade 2 acetabular wear. The remainder demonstrated no radiographic evidence of wear. Median medial migration was 0.3 mm (IQR -0.2 to 0.7) and superior migration was 0.3 mm (IQR -0.2 to 0.6). No relationship between unipolar versus bipolar articulations and wear was evident.ConclusionHemiarthroplasty PFRs for tumour reconstruction eliminate joint instability and, in the short to medium term, do not lead to native acetabular wear necessitating later acetabular resurfacing. Cite this article: Bone Joint J 2018;100B:101–8.

scholarly journals What are the Risk Factors for Worse Outcomes of Meniscus Surgery in 23-39-Year-Old Patients Ligamentously Stable Knees?

2020 ◽  
Vol 8 (7_suppl6) ◽  
pp. 2325967120S0046
Author(s):  
◽  
Megan Flynn ◽  
Anthony Egger ◽  
Yuxuan Jin ◽  
Elizabeth Sosic ◽  
...  
Keyword(s):  
Risk Factors ◽  
Young Adult ◽  
Patient Reported Outcomes ◽  
Meniscal Repair ◽  
Patient Specific ◽  
Lower Baseline ◽  
Patient Reported ◽  
Grade 3 ◽  
One Year

Objectives: Meniscus tears are a common and significant source of knee dysfunction in active young adult patients, and no high-quality prospective cohort or RCTs studies exist evaluating patient-reported outcomes in patients in this age group with ligamentously stable knees. Our objective was to identify patient-reported outcomes and patient-specific risk factors from a prospective cohort with a minimum of one-year follow-up following meniscal repair or excision in patients with ligamentously stable knees. We hypothesized that both groups would have significant improvement in outcomes; patients undergoing meniscal repair would have a higher reoperation rate; and articular cartilage injuries, subsequent knee surgery, and certain demographic characteristics would be significant risk factors to inferior outcomes at one year. Methods: Between February 2015 and December 2017, ligamentously stable meniscal procedures were enrolled and prospectively followed using the outcomes management evaluation system (OME) at Cleveland Clinic. Patients aged 23-39 preoperatively completed a series of validated outcome measurements including the Knee Injury and Osteoarthritis Outcome Score for both Pain (KOOS Pain) and Quality of Life (KOOS QoL). At the time of surgery, physicians documented all intra-articular findings, treatment, and surgical techniques utilized. Patients were followed at minimum of 1-year postoperatively through the OME platform and asked to complete the same outcome instruments done at baseline as well as a question designed to evaluate the Patient Acceptable Symptom State (PASS). The incidence and details of any subsequent knee surgeries were also obtained. Multivariable regression analysis was used to identify significant predictors of outcomes. Results: A total of 371 patients aged 23-39 underwent meniscus excision or repair during the study period. One hundred ninety-four met inclusion criteria, and one-year follow-up was obtained on 72% (n = 139) of the cohort (67% male; median age 32). Both KOOS Pain and KOOS QoL improved significantly at one-year for the entire cohort. Fourteen percent of the cohort (9% on the ipsilateral knee, 5% on the contralateral knee) underwent subsequent surgery at a minimum of one-year postoperatively. The patient-specific risk factors for worse one-year outcomes included preoperative baseline mental capacity score (VR-12 MCS), lower baseline KOOS QoL score, and the intraoperative finding of any grade 3 or 4 chondral changes. Conclusion: Young adult patients with ligamentously stable knees undergoing meniscal surgery have significantly improved patient-reported outcomes regardless of excision or repair; however, 14% of patients underwent additional knee surgery at a minimum of one-year postoperatively. The risk factors for worse outcomes include lower baseline mental health score, lower baseline KOOS QoL score, and any grade 3 or 4 chondromalacia scene.

How Children Read: Matching by Sight and Sound

1974 ◽  
Vol 6 (3) ◽  
pp. 295-303 ◽  
Author(s):  
Jane F. Mackworth ◽  
N. H. Mackworth
Keyword(s):  
Reading Ability ◽  
Poor Readers ◽  
Speed Of Processing ◽  
Good Readers ◽  
Grade 3 ◽  
And Performance

The Coding Test was given to 80 children from 7 to 12 years old. They were asked to judge whether pairs of pictures, letters or words looked or sounded the same. The test measures three aspects of reading: coding written letters or words into sound, detecting small visual differences, and the speed of processing. In each grade poor readers made more errors than good readers. The ability to detect small differences did not change beyond Grade 3, but the ability to recognize sound-alike words improved throughout grades. There was no relation between reading ability and performance in a non-verbal pictorial task.

Experimental Study on the Combustion Process and Performance of Diesel Engines Fueled by Emulsion Diesel With Novel Organic Additives

2013 ◽  
Author(s):  
Wenming Yang ◽  
Hui An ◽  
Jing Li ◽  
Amin Maghbouli ◽  
Kian Jon Chua
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Thermal Efficiency ◽  
Gasoline Engine ◽  
Combustion Process ◽  
Nox Emissions ◽  
Organic Additives ◽  
Oil Droplets ◽  
And Performance ◽  
One Year

Transportation is one of the major contributors to the world’s energy consumption and greenhouse gases emissions. The need for increased efficiency has placed diesel engine in the spotlight due to its superior thermal efficiency and fuel economy over gasoline engine. However, diesel engines also face the major disadvantage of increased NOx emissions. To address this issue, three types of emulsion fuels with different water concentrations (5%, 10% and 15% mass water) are produced and tested. Novel organic materials (glycerin and ployethoxy-ester) are added in the fuel to provide extra oxygen for improving combustion. NP-15 is added as surfactant which can help to reduce the oil and water surface tension, activates their surface, and maximizes their superficial contact areas, thereby forming a continuous and finely dispersed droplets phase. The stability of the emulsion fuels is tested under various environmental temperature for one year, and no significant separation is observed. It is better than normal emulsion fuel which can only maintain the state for up to three months. The combustion process and performance of the emulsion fuels are tested in a four-stroke, four cylinder diesel engine. The results indicate that the water droplets enclosed in the emulsion fuel explode at high temperature environment and help to break up the big oil droplets into smaller ones, thereby significantly increase the surface area of the oil droplets and enhance the heat transfer from hot gas to the fuel. As a result, the fuel evaporation is improved and the combustion process is accelerated, leading to an improved brake thermal efficiency (up to 14.2%). Meanwhile, the presence of the water causes the peak temperature of the flame to drop, thereby significantly bringing down the NOx emissions by more than 30%.

Critical realism and performance measurement and management

2019 ◽  
Vol 42 (5) ◽  
pp. 568-585 ◽  
Author(s):  
Ryan Armstrong
Keyword(s):  
Performance Measurement ◽  
Organizational Context ◽  
Critical Realism ◽  
Knowledge Building ◽  
Content Type ◽  
Critical Realist ◽  
Or Practice ◽  
Interdisciplinary Knowledge ◽  
And Performance ◽  
Systems View

Purpose The purpose of this paper is to explore the implications of adopting a critical realist position for the study of performance measurement and management (PMM) systems. Design/methodology/approach This paper discusses recent challenges to knowledge creation in PMM, arguing that overcoming these will require revisiting often implicit philosophical assumptions related to how the world is and how we learn about it. A critical realist perspective is explored and illustrated with the case of a software company attempting to empower and motivate its team. Findings Critical realism provides a means of building interdisciplinary knowledge in PMM. In addition to a generative view of causality, critical realism could augment a systems view of PMM by adopting a stratified view of reality and through its applied approach to knowledge building. The case illustrates the RRREIC approach and highlights the interplay of mechanisms of different scales and how this requires interdisciplinarity. Research limitations/implications Approaching the study of PMM with critical realism requires going beyond a particular tool or practice to understand the theory behind it. Such an approach can facilitate a layered, nuanced analysis of the issues facing organizations in a changing context. Originality/value This paper adds to discussion of philosophical topics in management and PMM and could help resolve ongoing challenges to knowledge building in the field, especially around barriers to conducting interdisciplinary research. In combination with rigorous methods, a strong philosophical base can facilitate relevant, lasting theories that can respond to a changing organizational context.

Randomized Phase II Study of Bortezomib Alone and Bortezomib in Combination With Docetaxel in Previously Treated Advanced Non–Small-Cell Lung Cancer

2006 ◽  
Vol 24 (31) ◽  
pp. 5025-5033 ◽  
Author(s):  
Michael P. Fanucchi ◽  
Frank V. Fossella ◽  
Robert Belt ◽  
Ronald Natale ◽  
Panos Fidias ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Small Cell Lung Cancer ◽  
Cell Lung Cancer ◽  
Single Agent ◽  
Small Cell ◽  
Small Cell Lung ◽  
Randomized Phase Ii ◽  
Common Grade ◽  
Grade 3 ◽  
One Year

Purpose To evaluate the efficacy and toxicity of bortezomib ± docetaxel as second-line therapy in patients with relapsed or refractory advanced non–small-cell lung cancer (NSCLC). Patients and Methods Patients were randomly assigned to bortezomib 1.5 mg/m2 (arm A) or bortezomib 1.3 mg/m2 plus docetaxel 75 mg/m2 (arm B). A treatment cycle of 21 days comprised four bortezomib doses on days 1, 4, 8, and 11, plus, in arm B, docetaxel on day 1. Patients could receive unlimited cycles. The primary end point was response rate. Results A total of 155 patients were treated, 75 in arm A and 80 in arm B. Baseline characteristics were comparable. Investigator-assessed response rates were 8% in arm A and 9% in arm B. Disease control rates were 29% in arm A and 54% in arm B. Median time to progression was 1.5 months in arm A and 4.0 months in arm B. One-year survival was 39% and 33%, and median survival was 7.4 and 7.8 months in arms A and B, respectively. Adverse effect profiles were as expected in both arms, with no significant additivity. The most common grade ≥ 3 adverse events were neutropenia, fatigue, and dyspnea (4% and 53%, 19% and 26%, and 17% and 14% of patients in arms A and B, respectively). Conclusion Bortezomib has modest single-agent activity in patients with relapsed or refractory advanced NSCLC using this schedule, with minor enhancement in combination with docetaxel. Additional investigation of bortezomib in NSCLC is warranted in combination with other drugs known to be active, or using different schedules.

Full-Dose Gemcitabine With Concurrent Radiation Therapy in Patients With Nonmetastatic Pancreatic Cancer: A Multicenter Phase II Trial

2008 ◽  
Vol 26 (6) ◽  
pp. 942-947 ◽  
Author(s):  
William Small ◽  
Jordan Berlin ◽  
Gary M. Freedman ◽  
Theodore Lawrence ◽  
Mark S. Talamonti ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Survival Rates ◽  
Three Dimensional ◽  
Primary Objective ◽  
Borderline Resectable ◽  
Full Dose ◽  
Multicenter Phase ◽  
Grade 3 ◽  
One Year ◽  
3D Crt

Purpose Gemcitabine is effective in the treatment of pancreatic cancer and is a potent radiosensitizer. This study assessed safety and efficacy of full-dose gemcitabine administered before and during concurrent three-dimensional conformal radiation (3D-CRT) in patients with nonmetastatic pancreatic cancer. Patients and Methods During cycles 1 and 3, patients received gemcitabine at 1,000 mg/m2 on days 1 and 8 of each 21-day cycle. Cycle 2 included the same dose of gemcitabine on days 1, 8, and 15 of a 28-day cycle with concurrent 3D-CRT at 36 Gy, administered in 15 fractions of 2.4 Gy, over 3 weeks. Resectable patients underwent surgery 4 to 6 weeks after treatment. The primary objective was evaluation of toxicity. Tumor response, CA 19-9, and 1-year survival were also assessed. Results Forty-one patients enrolled at six institutions between April 2002 and October 2003. Among the 39 treated patients, the most common toxicities were grade 3 neutropenia (12.8%), grade 3 nausea (10.3%), and grade 3 vomiting (10.3%). The response rate was 5.1% and disease control rate was 84.6%. Mean post-treatment CA 19-9 levels (228 ± 347 U/mL) were significantly (P = .006) reduced compared with pretreatment levels (1,241 ± 2,124 U/mL). Thirteen (81%) of 16 patients initially judged resectable, three (33%) of nine borderline-resectable patients, and one (7%) of 14 unresectable patients underwent resection after therapy. One-year survival rates were 73% for all patients, 94% for resectable patients, 76% for borderline-resectable patients, and 47% for unresectable patients. Conclusion Full-dose gemcitabine with concurrent radiotherapy was well tolerated and active. Evaluation of this regimen in a larger, randomized trial for patients with resectable or borderline-resectable disease may be warranted.

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