Shashidhar Belbase | Troy University (original) (raw)

Papers by Shashidhar Belbase

Research paper thumbnail of Effect of Digital Awareness on Mathematics Achievements at School to University Levels in Nepal

Digital awareness is necessary for mathematics teachers to use digital technologies, including et... more Digital awareness is necessary for mathematics teachers to use digital technologies, including ethical, cultural, leadership, and policy awareness in this 21 st century. This study aimed to examine the interrelation of digital awareness of mathematics teachers with students' achievement at schools to higher education levels in Nepal. An online survey was conducted among 399 mathematics teachers of Nepal and Mann-Whitney, Kruskal-Wallis, and multilevel linear regression were major statistical techniques used in the study. The findings indicated that most of the participants had digital devices, and the level of digital awareness was found to be high. The types of institution and teaching level were major contributing factors to determine the digital awareness, and developing and sharing cultural consequences are the main predictors of learners' achievement.

Research paper thumbnail of A Journey of Learning Mathematics through Inside-Out Approach

Online Submission to ERIC (http://www.eric.ed.gov/PDFS/ED513782.pdf), Dec 6, 2010

Abstract: In this paper I discussed an episode of inside-out approach of learning mathematics tha... more Abstract: In this paper I discussed an episode of inside-out approach of learning mathematics that started from my deeply held values, feelings, thoughts, and experiences making them starting point of learning process. I was engaged in a brief learning session with a geometrical problem as context within the session. Data from video record of the learning process and a written experiential anecdote were analyzed and interpreted. Some important aspects of learning process were identified as self-confrontation, mediation, ...

Research paper thumbnail of Philosophical Foundations for Curriculum Decision: A Reflective Analysis

Online Submission (http://www.eric.ed.gov/PDFS/ED524740.pdf), Oct 8, 2011

Abstract: This paper discusses the author's curriculum experiences under different philosoph... more Abstract: This paper discusses the author's curriculum experiences under different philosophical, epistemological and theoretical backdrops. The analysis of different perspectives bridges epistemological and philosophical/theoretical lenses to my understanding of curriculum and different curricular decisions. This praxeological experience as a student and then as a teacher within the context of tension between traditional goal oriented curriculum to backward design from goals to action oriented ...

Research paper thumbnail of Lived and Living Mathematical Experiences of Pre-service Elementary Teachers: An Exploratory Investigation

Wiest, L. R., & Lamberg, T. (Eds.). (2011). Proceedings of the 33rd Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education. Reno, NV: University of Nevada, Reno., 2011

Research paper thumbnail of Technology integration in preservice secondary mathematics teacher education: Prospects, priorities, and problems

Research paper thumbnail of Beliefs about Teaching Geometric Transformations with Geometer's Sketchpad: A Reflexive Abstraction

Online Submission, Aug 1, 2013

A teacher"s belief plays a significant role in the quality of teaching mathematics. In a fictive ... more A teacher"s belief plays a significant role in the quality of teaching mathematics. In a fictive way, I changed my role from a researcher to a research participant in an imaginative interview. My interior other (David) interviewed me as a researcher. A single interview session was held lasting for about three hours. The interview text was used for the analysis and interpretation using the grounded theory method. I invented a substantive theory of my beliefs about teaching geometric transformations with Geometer"s Sketchpad. The theory is "reflexive abstraction of my beliefs about teaching Geometric Transformations with Geometer"s Sketchpad" as a personal theory characterized by some basic categories of -beliefs about the advancement of pedagogy, beliefs about pedagogical environment, beliefs about the role of students" and teacher, beliefs about self as a future teacher, beliefs about teaching learning activities, and beliefs about transitions in teaching learning. I reconstructed a synthesis of the characteristics of these beliefs. While constructing these layers of interpretive accounts, I used radical constructivist grounded theory as a theoretical base.

Research paper thumbnail of Environmental impact assessment in waste management in Nepal: Is it responsive, comprehensive, and people centric?

"Use of environmental impact assessment in development work has been rather slow in Nepal an... more "Use of environmental impact assessment in development work has been rather slow in Nepal and until recently it was rare in solid waste projects. Realizing the importance of effective environmental auditing in operation and handling of solid waste tasks, this research utilized a comprehensive study comprised of field- and literature-based approach to critically examine environmental compliance in solid waste projects in Kathmandu Valley, Nepal. The methods include interview survey of 64 households near landfill locations, structured interviews of people from different levels of authority and experts, field observation of active, closed, and proposed landfill locations, focus group interviews with villagers impacted by landfill development, and collection of government reports and records. Preparation of environmental impact assessment report is rather rhetoric in Nepal, government often falls behind in implementing its accords, water sources have already been affected by landfilling activity, and public have not been fully informed about the consequences. Key findings suggest 94% of surveyed households were unsatisfied with the actions of government services and 70% of them were unaware of any alternate landfill locations. Only 14% of the respondents were happy with public participation conducted whereas 59% of them were unhappy or very unhappy with the results of entire environmental impact assessment procedures. Environmental impact assessment tools in solid waste projects in Nepal have clearly failed to gain public confidence. Tools that can educate people and embrace public participation and that are more transparent and built in line with government's commitment for local resource development would be more appropriate. Keywords: Environmental impact assessment, solid waste, public participation, Kathmandu, Nepal"

Research paper thumbnail of Radical versus Social Constructivism: An Epistemological-Pedagogical Dilemma

Research paper thumbnail of Evaluation of environmental impact assessment report preparation and public participation in landfill projects in Nepal

... YIN Min,YANG Zhi-feng (State Key Joint Laboratory of Environmental Simulation and Pollution C... more ... YIN Min,YANG Zhi-feng (State Key Joint Laboratory of Environmental Simulation and Pollution Control,School of Environment,Beijing Normal ... 1, Qiu Xiaoning1,Lin Wu2(1.Office of Shenzhen Water Pollution Control Headquarters,Shenzhen 518036;2.Shenzhen Institute of ...

Research paper thumbnail of A preservice mathematics teacher's beliefs about teaching mathematics with technology

This paper analyzed a preservice mathematics teacher's beliefs about teaching mathematics with te... more This paper analyzed a preservice mathematics teacher's beliefs about teaching mathematics with technology. The researcher used five semi-structured task-based interviews in the problematic contexts of teaching fraction multiplications with JavaBars, functions and limits, and geometric transformations with Geometer's Sketchpad, and statistical data with Excel Spreadsheet to generate data about the participant's pedagogical-technological beliefs. An additional unstructured interview was conducted with the same participant after his practice teaching. The interview data were analyzed and interpreted in two layers-the first layer portrays the participant's voice in his narratives and the second layer portrays researcher's voice in terms of his interpretation of data and interconnection to literature. The analysis and interpretation generated seven major categories of beliefs-beliefs about teaching materials, teaching strategy, bridging activities, technological tools, mathematical concepts, and meanings, activities and transformation, and issues and challenges. Finally, the author discusses implications of the study.

Research paper thumbnail of Evaluation of environmental impact assessment report preparation and public participation in landfill projects in Nepal

Habitat International, 2015

Research paper thumbnail of Beliefs about Teaching Geometric Transformations with Geometers’ Sketchpad: A Reflexive Abstraction

Journal of Education and Research, 2013

A teacher"s belief plays a significant role in the quality of teaching mathematics. In a fictive ... more A teacher"s belief plays a significant role in the quality of teaching mathematics. In a fictive way, I changed my role from a researcher to a research participant in an imaginative interview. My interior other (David) interviewed me as a researcher. A single interview session was held lasting for about three hours. The interview text was used for the analysis and interpretation using the grounded theory method. I invented a substantive theory of my beliefs about teaching geometric transformations with Geometer"s Sketchpad. The theory is "reflexive abstraction of my beliefs about teaching Geometric Transformations with Geometer"s Sketchpad" as a personal theory characterized by some basic categories of -beliefs about the advancement of pedagogy, beliefs about pedagogical environment, beliefs about the role of students" and teacher, beliefs about self as a future teacher, beliefs about teaching learning activities, and beliefs about transitions in teaching learning. I reconstructed a synthesis of the characteristics of these beliefs. While constructing these layers of interpretive accounts, I used radical constructivist grounded theory as a theoretical base.

Research paper thumbnail of Characterization, generation, and management of household solid waste in Tulsipur, Nepal

Habitat International, 2013

ABSTRACT Solid waste management in Tulsipur, Nepal has been very rudimentary and disorganized. Fo... more ABSTRACT Solid waste management in Tulsipur, Nepal has been very rudimentary and disorganized. For 11 years, the city practiced direct discharge of waste on a riverbank followed by the current disposal of waste in a creek with no soil cover or leachate treatment in place. The city's allocation of resources for waste management is also among the lowest in Nepal with 3474 residents per solid waste worker and 14.39 Nepalese Rupees or US $0.19 per person. Tulsipur collects less than one-half of the waste it generates and the waste frequently contaminates water sources. Nearly 100 Tulsipur Municipality households were investigated using cluster sampling techniques in an effort to characterize household solid waste and survey waste management practices. The waste composition study found that household solid waste is made up of 46% organic wastes, 11% dirt and construction debris, 10% plastics, 7% glass, 6% paper and paper products, 5% metals, and 5% rubber and leather. The balance included textiles (1%), hazardous wastes (1%), and other wastes (8%). Tulsipur generates 330.4 g capita(-1) day(-1) of household solid waste. The waste composition suggests that while organic wastes is still the largest component, recyclable items have emerged in recent years. The significant share of dirt and construction debris uncovered was an indication of urbanization in Tulsipur. Hazardous wastes rates were also higher than other Nepalese municipalities of similar size. It is recommended that Tulsipur adopt composting with a high degree of source separation for organic wastes, promote waste recovery or recycling at the local level to capture valuable items, use dirt and construction debris as a road filling substance and exchange material for new construction. Hazardous wastes also need special care. These practices will ensure that only residual wastes are deposited in landfill.

Research paper thumbnail of Research Paradigms: Implications for Social Transformation

Education and Development, 2008

Research paper thumbnail of Images, Anxieties and Attitudes toward Mathematics

Online Submission (http://www.eric.ed.gov/PDFS/ED513587.pdf), Dec 3, 2010

Abstract: Images, anxieties, and attitudes towards mathematics are common interest among mathemat... more Abstract: Images, anxieties, and attitudes towards mathematics are common interest among mathematics teachers, teacher educators and researchers. The main purpose of this literature review based paper is to discuss and analyze images, anxieties, and attitudes towards mathematics in order to foster meaningful teaching and learning of mathematics. Images of mathematics are greatly shaped by epistemological and philosophical perspectives of one who views mathematics either as priori or posteriori, absolute or ...

Research paper thumbnail of Passive remediation of coalbed natural gas co-produced water using zeolite

Coalbed natural gas (CBNG) co-produced waters can contain sodium (Na þ ) concentrations that may ... more Coalbed natural gas (CBNG) co-produced waters can contain sodium (Na þ ) concentrations that may be environmentally detrimental if discharged to receiving bodies of water or applied to land surfaces. A field demonstration and companion laboratory studies were conducted to evaluate the use of a Bear River zeolite (BR-zeolite) for mitigating impacts associated with Na þ in CBNG waters. Bench-scale kinetic and adsorption isotherm studies were performed to determine both the rate and extent of sodium Na þ adsorption and assess the effects of bicarbonate (HCO 3 -) and chloride (Cl -) anions. Results of these studies showed that the adsorption of Na þ on BR-zeolite followed the Langmuir adsorption model with maximum adsorption equal to 21 and 18 g Na þ /kg zeolite with 0.0012 and 0.0006 L/mg Langmuir coefficients (K L ) for sodium bicarbonate and sodium chloride, respectively. The kinetics study indicated that the sorption of Na þ was inversely related to the size of the zeolite particles with significantly greater adsorption for smaller particles. The field demonstration evaluated the effectiveness of BR-zeolite for mitigating infiltration losses from Na þ in CBNG waters. The field site utilized 12 open boreholes, each installed to a depth of approximately 1.8 m. Each borehole was lined with a 3.0 m long, 15 cm diameter schedule 40 PVC pipe and fitted with an automatic data logging pressure transducer for measuring water levels over time. The BR-zeolite was found to mitigate much of the deleterious effect that high sodium adsorption ratio (SAR ¼ 27 (mol/m 3 ) 1/2 ) CBNG co-produced water had on soil permeabilities.

Research paper thumbnail of Attitudinal and Cognitive Beliefs of Two Preservice Secondary Mathematics Teachers

The objective of this paper is to present attitudinal and cognitive beliefs of two preservice sec... more The objective of this paper is to present attitudinal and cognitive beliefs of two preservice secondary mathematics teachers about teaching geometric transformations (GTs) using Geometer‟s Sketchpad (GSP). The study comprised ten task-based interviews, a series of five each with two participants, senior undergraduate preservice mathematics teachers, at a medium-sized public university in the Rocky Mountain Region of the United States of America. Radical constructivist grounded theory (RCGT) was the theoretical framework used both to guide the study process as well as to integrate the research participants, the researcher, research process, and the data. The results of the study include in vivo categories of the participants‟ beliefs associated with attitude and cognition of teaching GTs with GSP. These include developing confidence with GSP, efficiency of using GSP for teaching GTs, exploring GTs with GSP, conjecturing GTs using GSP, supporting and engaging students in learning GTs, and understanding GTs with GSP. Some pedagogical and policy implications of these categories are also addressed.

Research paper thumbnail of Autoethnography: A Method of Research and Teaching for Transformative Education

Journal of Education and Research, 2008

Research paper thumbnail of Autoethnography: A Method of Research and Teaching for Transformative Education.

Online Submission, Jan 1, 2008

Research paper thumbnail of Effect of Digital Awareness on Mathematics Achievements at School to University Levels in Nepal

Digital awareness is necessary for mathematics teachers to use digital technologies, including et... more Digital awareness is necessary for mathematics teachers to use digital technologies, including ethical, cultural, leadership, and policy awareness in this 21 st century. This study aimed to examine the interrelation of digital awareness of mathematics teachers with students' achievement at schools to higher education levels in Nepal. An online survey was conducted among 399 mathematics teachers of Nepal and Mann-Whitney, Kruskal-Wallis, and multilevel linear regression were major statistical techniques used in the study. The findings indicated that most of the participants had digital devices, and the level of digital awareness was found to be high. The types of institution and teaching level were major contributing factors to determine the digital awareness, and developing and sharing cultural consequences are the main predictors of learners' achievement.

Research paper thumbnail of A Journey of Learning Mathematics through Inside-Out Approach

Online Submission to ERIC (http://www.eric.ed.gov/PDFS/ED513782.pdf), Dec 6, 2010

Abstract: In this paper I discussed an episode of inside-out approach of learning mathematics tha... more Abstract: In this paper I discussed an episode of inside-out approach of learning mathematics that started from my deeply held values, feelings, thoughts, and experiences making them starting point of learning process. I was engaged in a brief learning session with a geometrical problem as context within the session. Data from video record of the learning process and a written experiential anecdote were analyzed and interpreted. Some important aspects of learning process were identified as self-confrontation, mediation, ...

Research paper thumbnail of Philosophical Foundations for Curriculum Decision: A Reflective Analysis

Online Submission (http://www.eric.ed.gov/PDFS/ED524740.pdf), Oct 8, 2011

Abstract: This paper discusses the author's curriculum experiences under different philosoph... more Abstract: This paper discusses the author's curriculum experiences under different philosophical, epistemological and theoretical backdrops. The analysis of different perspectives bridges epistemological and philosophical/theoretical lenses to my understanding of curriculum and different curricular decisions. This praxeological experience as a student and then as a teacher within the context of tension between traditional goal oriented curriculum to backward design from goals to action oriented ...

Research paper thumbnail of Lived and Living Mathematical Experiences of Pre-service Elementary Teachers: An Exploratory Investigation

Wiest, L. R., & Lamberg, T. (Eds.). (2011). Proceedings of the 33rd Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education. Reno, NV: University of Nevada, Reno., 2011

Research paper thumbnail of Technology integration in preservice secondary mathematics teacher education: Prospects, priorities, and problems

Research paper thumbnail of Beliefs about Teaching Geometric Transformations with Geometer's Sketchpad: A Reflexive Abstraction

Online Submission, Aug 1, 2013

A teacher"s belief plays a significant role in the quality of teaching mathematics. In a fictive ... more A teacher"s belief plays a significant role in the quality of teaching mathematics. In a fictive way, I changed my role from a researcher to a research participant in an imaginative interview. My interior other (David) interviewed me as a researcher. A single interview session was held lasting for about three hours. The interview text was used for the analysis and interpretation using the grounded theory method. I invented a substantive theory of my beliefs about teaching geometric transformations with Geometer"s Sketchpad. The theory is "reflexive abstraction of my beliefs about teaching Geometric Transformations with Geometer"s Sketchpad" as a personal theory characterized by some basic categories of -beliefs about the advancement of pedagogy, beliefs about pedagogical environment, beliefs about the role of students" and teacher, beliefs about self as a future teacher, beliefs about teaching learning activities, and beliefs about transitions in teaching learning. I reconstructed a synthesis of the characteristics of these beliefs. While constructing these layers of interpretive accounts, I used radical constructivist grounded theory as a theoretical base.

Research paper thumbnail of Environmental impact assessment in waste management in Nepal: Is it responsive, comprehensive, and people centric?

"Use of environmental impact assessment in development work has been rather slow in Nepal an... more "Use of environmental impact assessment in development work has been rather slow in Nepal and until recently it was rare in solid waste projects. Realizing the importance of effective environmental auditing in operation and handling of solid waste tasks, this research utilized a comprehensive study comprised of field- and literature-based approach to critically examine environmental compliance in solid waste projects in Kathmandu Valley, Nepal. The methods include interview survey of 64 households near landfill locations, structured interviews of people from different levels of authority and experts, field observation of active, closed, and proposed landfill locations, focus group interviews with villagers impacted by landfill development, and collection of government reports and records. Preparation of environmental impact assessment report is rather rhetoric in Nepal, government often falls behind in implementing its accords, water sources have already been affected by landfilling activity, and public have not been fully informed about the consequences. Key findings suggest 94% of surveyed households were unsatisfied with the actions of government services and 70% of them were unaware of any alternate landfill locations. Only 14% of the respondents were happy with public participation conducted whereas 59% of them were unhappy or very unhappy with the results of entire environmental impact assessment procedures. Environmental impact assessment tools in solid waste projects in Nepal have clearly failed to gain public confidence. Tools that can educate people and embrace public participation and that are more transparent and built in line with government's commitment for local resource development would be more appropriate. Keywords: Environmental impact assessment, solid waste, public participation, Kathmandu, Nepal"

Research paper thumbnail of Radical versus Social Constructivism: An Epistemological-Pedagogical Dilemma

Research paper thumbnail of Evaluation of environmental impact assessment report preparation and public participation in landfill projects in Nepal

... YIN Min,YANG Zhi-feng (State Key Joint Laboratory of Environmental Simulation and Pollution C... more ... YIN Min,YANG Zhi-feng (State Key Joint Laboratory of Environmental Simulation and Pollution Control,School of Environment,Beijing Normal ... 1, Qiu Xiaoning1,Lin Wu2(1.Office of Shenzhen Water Pollution Control Headquarters,Shenzhen 518036;2.Shenzhen Institute of ...

Research paper thumbnail of A preservice mathematics teacher's beliefs about teaching mathematics with technology

This paper analyzed a preservice mathematics teacher's beliefs about teaching mathematics with te... more This paper analyzed a preservice mathematics teacher's beliefs about teaching mathematics with technology. The researcher used five semi-structured task-based interviews in the problematic contexts of teaching fraction multiplications with JavaBars, functions and limits, and geometric transformations with Geometer's Sketchpad, and statistical data with Excel Spreadsheet to generate data about the participant's pedagogical-technological beliefs. An additional unstructured interview was conducted with the same participant after his practice teaching. The interview data were analyzed and interpreted in two layers-the first layer portrays the participant's voice in his narratives and the second layer portrays researcher's voice in terms of his interpretation of data and interconnection to literature. The analysis and interpretation generated seven major categories of beliefs-beliefs about teaching materials, teaching strategy, bridging activities, technological tools, mathematical concepts, and meanings, activities and transformation, and issues and challenges. Finally, the author discusses implications of the study.

Research paper thumbnail of Evaluation of environmental impact assessment report preparation and public participation in landfill projects in Nepal

Habitat International, 2015

Research paper thumbnail of Beliefs about Teaching Geometric Transformations with Geometers’ Sketchpad: A Reflexive Abstraction

Journal of Education and Research, 2013

A teacher"s belief plays a significant role in the quality of teaching mathematics. In a fictive ... more A teacher"s belief plays a significant role in the quality of teaching mathematics. In a fictive way, I changed my role from a researcher to a research participant in an imaginative interview. My interior other (David) interviewed me as a researcher. A single interview session was held lasting for about three hours. The interview text was used for the analysis and interpretation using the grounded theory method. I invented a substantive theory of my beliefs about teaching geometric transformations with Geometer"s Sketchpad. The theory is "reflexive abstraction of my beliefs about teaching Geometric Transformations with Geometer"s Sketchpad" as a personal theory characterized by some basic categories of -beliefs about the advancement of pedagogy, beliefs about pedagogical environment, beliefs about the role of students" and teacher, beliefs about self as a future teacher, beliefs about teaching learning activities, and beliefs about transitions in teaching learning. I reconstructed a synthesis of the characteristics of these beliefs. While constructing these layers of interpretive accounts, I used radical constructivist grounded theory as a theoretical base.

Research paper thumbnail of Characterization, generation, and management of household solid waste in Tulsipur, Nepal

Habitat International, 2013

ABSTRACT Solid waste management in Tulsipur, Nepal has been very rudimentary and disorganized. Fo... more ABSTRACT Solid waste management in Tulsipur, Nepal has been very rudimentary and disorganized. For 11 years, the city practiced direct discharge of waste on a riverbank followed by the current disposal of waste in a creek with no soil cover or leachate treatment in place. The city's allocation of resources for waste management is also among the lowest in Nepal with 3474 residents per solid waste worker and 14.39 Nepalese Rupees or US $0.19 per person. Tulsipur collects less than one-half of the waste it generates and the waste frequently contaminates water sources. Nearly 100 Tulsipur Municipality households were investigated using cluster sampling techniques in an effort to characterize household solid waste and survey waste management practices. The waste composition study found that household solid waste is made up of 46% organic wastes, 11% dirt and construction debris, 10% plastics, 7% glass, 6% paper and paper products, 5% metals, and 5% rubber and leather. The balance included textiles (1%), hazardous wastes (1%), and other wastes (8%). Tulsipur generates 330.4 g capita(-1) day(-1) of household solid waste. The waste composition suggests that while organic wastes is still the largest component, recyclable items have emerged in recent years. The significant share of dirt and construction debris uncovered was an indication of urbanization in Tulsipur. Hazardous wastes rates were also higher than other Nepalese municipalities of similar size. It is recommended that Tulsipur adopt composting with a high degree of source separation for organic wastes, promote waste recovery or recycling at the local level to capture valuable items, use dirt and construction debris as a road filling substance and exchange material for new construction. Hazardous wastes also need special care. These practices will ensure that only residual wastes are deposited in landfill.

Research paper thumbnail of Research Paradigms: Implications for Social Transformation

Education and Development, 2008

Research paper thumbnail of Images, Anxieties and Attitudes toward Mathematics

Online Submission (http://www.eric.ed.gov/PDFS/ED513587.pdf), Dec 3, 2010

Abstract: Images, anxieties, and attitudes towards mathematics are common interest among mathemat... more Abstract: Images, anxieties, and attitudes towards mathematics are common interest among mathematics teachers, teacher educators and researchers. The main purpose of this literature review based paper is to discuss and analyze images, anxieties, and attitudes towards mathematics in order to foster meaningful teaching and learning of mathematics. Images of mathematics are greatly shaped by epistemological and philosophical perspectives of one who views mathematics either as priori or posteriori, absolute or ...

Research paper thumbnail of Passive remediation of coalbed natural gas co-produced water using zeolite

Coalbed natural gas (CBNG) co-produced waters can contain sodium (Na þ ) concentrations that may ... more Coalbed natural gas (CBNG) co-produced waters can contain sodium (Na þ ) concentrations that may be environmentally detrimental if discharged to receiving bodies of water or applied to land surfaces. A field demonstration and companion laboratory studies were conducted to evaluate the use of a Bear River zeolite (BR-zeolite) for mitigating impacts associated with Na þ in CBNG waters. Bench-scale kinetic and adsorption isotherm studies were performed to determine both the rate and extent of sodium Na þ adsorption and assess the effects of bicarbonate (HCO 3 -) and chloride (Cl -) anions. Results of these studies showed that the adsorption of Na þ on BR-zeolite followed the Langmuir adsorption model with maximum adsorption equal to 21 and 18 g Na þ /kg zeolite with 0.0012 and 0.0006 L/mg Langmuir coefficients (K L ) for sodium bicarbonate and sodium chloride, respectively. The kinetics study indicated that the sorption of Na þ was inversely related to the size of the zeolite particles with significantly greater adsorption for smaller particles. The field demonstration evaluated the effectiveness of BR-zeolite for mitigating infiltration losses from Na þ in CBNG waters. The field site utilized 12 open boreholes, each installed to a depth of approximately 1.8 m. Each borehole was lined with a 3.0 m long, 15 cm diameter schedule 40 PVC pipe and fitted with an automatic data logging pressure transducer for measuring water levels over time. The BR-zeolite was found to mitigate much of the deleterious effect that high sodium adsorption ratio (SAR ¼ 27 (mol/m 3 ) 1/2 ) CBNG co-produced water had on soil permeabilities.

Research paper thumbnail of Attitudinal and Cognitive Beliefs of Two Preservice Secondary Mathematics Teachers

The objective of this paper is to present attitudinal and cognitive beliefs of two preservice sec... more The objective of this paper is to present attitudinal and cognitive beliefs of two preservice secondary mathematics teachers about teaching geometric transformations (GTs) using Geometer‟s Sketchpad (GSP). The study comprised ten task-based interviews, a series of five each with two participants, senior undergraduate preservice mathematics teachers, at a medium-sized public university in the Rocky Mountain Region of the United States of America. Radical constructivist grounded theory (RCGT) was the theoretical framework used both to guide the study process as well as to integrate the research participants, the researcher, research process, and the data. The results of the study include in vivo categories of the participants‟ beliefs associated with attitude and cognition of teaching GTs with GSP. These include developing confidence with GSP, efficiency of using GSP for teaching GTs, exploring GTs with GSP, conjecturing GTs using GSP, supporting and engaging students in learning GTs, and understanding GTs with GSP. Some pedagogical and policy implications of these categories are also addressed.

Research paper thumbnail of Autoethnography: A Method of Research and Teaching for Transformative Education

Journal of Education and Research, 2008

Research paper thumbnail of Autoethnography: A Method of Research and Teaching for Transformative Education.

Online Submission, Jan 1, 2008