You searched for subject:( backpack).
Showing records 1 – 30 of
38 total matches.
◁ [1] [2] ▶
Penn State University
1.
Li, Shan.
An examination of Petromyzontidae in Pennsylvania.
Degree: 2012, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/14576 
► Lampreys are one of the two jawless vertebrate groups in Agnatha. The adult’s life is shorter than the larval stage which is known as “ammocoete”.…
(more)
▼ Lampreys are one of the two jawless vertebrate groups in Agnatha. The adult’s life is shorter than the larval stage which is known as “ammocoete”. They are either in parasitic forms or non-parasitic forms. Parasitic adults attach to other species, rely on the blood or flesh of the hosts, and non-parasitic adults die after spawning. There is little historical data on lampreys because ammocoetes are filter feeders who are in the sediment, and captures of adults were all by chance. The objectives I achieved in this study were included: 1) Compiled all existing PA historical data (prior to 1990s) of lampreys and created database and distribution maps for each species; 2) Sampled historical sites for native lampreys in 2011 by using
backpack designed for ammocoetes, documented changes in lamprey communities at the watershed scale; 3) Conducted substrate sampling at sites where ammocoetes were present, analyzed substrate size preferred by ammocoetes; 4) Identified collections to species, compared the current data and historical data to see the presence and absence of native lamprey species and value the changes of distributions.
In Pennsylvania, 7 species were found historically. They are Lampetra aepyptera, Lampetra appendix, Ichthyomyzon bdellium, Ichthyomyzon fossor, Ichthyomyzon greeleyi, Ichthyomyzon unicuspis, Petromyzon marinus, among which I. fossor and I. unicuspis are endangered, and other species are in concern. In 2011, 21 streams were inspected, 18 creeks were sampled by using an ammocoete
backpack shocker designed in Dr. Stauffer’s lab, and 4 species- Lampetra aepyptera, Lampetra appendix, Ichthyomyzon greeleyi and Petromyzon marinus were found in 14 creeks statewide. Lampreys were extinct at some sites because of flow regulation, channelization, poor water quality, and chemical treatments. In tributaries of Lake Erie, Sea Lamprey treatment might be a major reason to the population declining of other native species. Substrate size and water velocity are the most important factors determine the presence and absence of larval lampreys, so substrate samples were collected at 5 sites where ammocoetes were present. Differences on size of the sediments were found between lamprey spots and non-lamprey spots. Ammocoetes prefer smaller sized substrate with particle diameter less than 0.25mm in shallow, warm waters with dissolved organic matter. This study elaborated the current status of different larval lamprey species and indicated that their distributional range is shrinking and there might be a declining trend of native lamprey species although abundance survey was not implemented.
Advisors/Committee Members: Jay Richard Stauffer Jr., Thesis Advisor/Co-Advisor, C Paola Ferreri, Thesis Advisor/Co-Advisor, Donna Jean Peuquet, Thesis Advisor/Co-Advisor.
Subjects/Keywords: Petromyzontidae; ammocoete; substrate; backpack electrofishing; distribution; PA
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, S. (2012). An examination of Petromyzontidae in Pennsylvania. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/14576
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Li, Shan. “An examination of Petromyzontidae in Pennsylvania.” 2012. Thesis, Penn State University. Accessed January 15, 2021.
https://submit-etda.libraries.psu.edu/catalog/14576.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Li, Shan. “An examination of Petromyzontidae in Pennsylvania.” 2012. Web. 15 Jan 2021.
Vancouver:
Li S. An examination of Petromyzontidae in Pennsylvania. [Internet] [Thesis]. Penn State University; 2012. [cited 2021 Jan 15].
Available from: https://submit-etda.libraries.psu.edu/catalog/14576.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Li S. An examination of Petromyzontidae in Pennsylvania. [Thesis]. Penn State University; 2012. Available from: https://submit-etda.libraries.psu.edu/catalog/14576
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
2.
Graham, Sheena.
Biomechanical comparisons considering risk to the lumbar spine: walking with no load, a backpack, and a person on the back.
Degree: Kinesiology and Recreation Management, 2015, University of Manitoba
URL: http://hdl.handle.net/1993/30266
► Participants were twelve 70+ kg male strength-trained athletes and one passenger child with a mass of 29 kg. The male participants walked three times over…
(more)
▼ Participants were twelve 70+ kg male strength-trained athletes and one passenger child with a mass of 29 kg. The male participants walked three times over a force plate embedded in an eight metre walkway for each of three conditions: carrying no load, a 29 kg
backpack, or a 29 kg passenger.
Variables were compared using a repeated measures ANOVA test with a Bonferroni correction. Both load conditions produced compensatory trunk flexion; trunk flexion increased from no load to piggybacking to backpacking. Trunk range of motion was similar for no load and piggybacking, but increased to backpacking. The
backpack load caused greater resultant and total magnitude of torque than the passenger load. The trunk extensors dominated with no load and piggybacking and the trunk flexors dominated with backpacking. Many of the significant differences between conditions suggest that piggybacking is biomechanically more similar to natural gait than is backpacking.
Advisors/Committee Members: Alexander, Marion (Kinesiology and Recreation Management) (supervisor), Glazebrook, Cheryl (Kinesiology and Recreation Management) Leiter, Jeff (Kinesiology and Recreation Management) Telles-Langdon, David (University of Winnipeg) (examiningcommittee).
Subjects/Keywords: Backpack; Piggyback; Lumbosacral; Load Carriage; CrossFit; Biomechanics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Graham, S. (2015). Biomechanical comparisons considering risk to the lumbar spine: walking with no load, a backpack, and a person on the back. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/30266
Chicago Manual of Style (16th Edition):
Graham, Sheena. “Biomechanical comparisons considering risk to the lumbar spine: walking with no load, a backpack, and a person on the back.” 2015. Masters Thesis, University of Manitoba. Accessed January 15, 2021.
http://hdl.handle.net/1993/30266.
MLA Handbook (7th Edition):
Graham, Sheena. “Biomechanical comparisons considering risk to the lumbar spine: walking with no load, a backpack, and a person on the back.” 2015. Web. 15 Jan 2021.
Vancouver:
Graham S. Biomechanical comparisons considering risk to the lumbar spine: walking with no load, a backpack, and a person on the back. [Internet] [Masters thesis]. University of Manitoba; 2015. [cited 2021 Jan 15].
Available from: http://hdl.handle.net/1993/30266.
Council of Science Editors:
Graham S. Biomechanical comparisons considering risk to the lumbar spine: walking with no load, a backpack, and a person on the back. [Masters Thesis]. University of Manitoba; 2015. Available from: http://hdl.handle.net/1993/30266
Brno University of Technology
3.
Štechová, Eva.
SKLADACÍ MESTSKÝ BATOH: FOLDABLE CITY BACKPACK.
Degree: 2019, Brno University of Technology
URL: http://hdl.handle.net/11012/64760
► From the first idea, to research and comparing with other backpacks with foldable function (tele, usárna), and with backpacks associated with urban and streetwear function,…
(more)
▼ From the first idea, to research and comparing with other backpacks with foldable function (tele, usárna), and with backpacks associated with urban and streetwear function, I designed a
backpack with a practical and functional design which opens questions of personal vs. public space. It plays with the question of lifestyle as a focal point of marketing. It speaks to young people, who spend their time in the city public space and occupy it in their own way. Technical parameters of the
backpack are dependent of its functional needs, but the first idea came out of the needs of a modern young nomad, exploring the city public space.
Advisors/Committee Members: Čapkovičová, Marcela (advisor), Lidmila, Jan (referee).
Subjects/Keywords: batoh; rozkladací; messenger; urban; mestský batoh; streetwear; backpack; foldable; messenger; urban; city backpack; streetwear
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Štechová, E. (2019). SKLADACÍ MESTSKÝ BATOH: FOLDABLE CITY BACKPACK. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/64760
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Štechová, Eva. “SKLADACÍ MESTSKÝ BATOH: FOLDABLE CITY BACKPACK.” 2019. Thesis, Brno University of Technology. Accessed January 15, 2021.
http://hdl.handle.net/11012/64760.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Štechová, Eva. “SKLADACÍ MESTSKÝ BATOH: FOLDABLE CITY BACKPACK.” 2019. Web. 15 Jan 2021.
Vancouver:
Štechová E. SKLADACÍ MESTSKÝ BATOH: FOLDABLE CITY BACKPACK. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 15].
Available from: http://hdl.handle.net/11012/64760.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Štechová E. SKLADACÍ MESTSKÝ BATOH: FOLDABLE CITY BACKPACK. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/64760
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
4.
ALEIXO, Joseph Daniel Alves.
Estudo da relação das alterações posturais em adolescentes com o uso de mochilas escolares
.
Degree: 2015, Universidade Federal de Pernambuco
URL: http://repositorio.ufpe.br/handle/123456789/16270
► A ergonomia é o estudo do relacionamento entre o homem e o seu trabalho, estudando as interações das pessoas com a tecnologia, organização e ambiente.…
(more)
▼ A ergonomia é o estudo do relacionamento entre o homem e o seu trabalho, estudando as interações das pessoas com a tecnologia, organização e ambiente. Em diferentes situações, é importante verificar se a execução de determinada tarefa está sendo realizada pelo indivíduo, respeitando sua capacidade física e mental. Alterações na postura são ocasionadas pelo carregamento de cargas por longos percursos e esta questão tem despertado a atenção de vários estudiosos na área. Em crianças, variações posturais são comumente encontradas no período do crescimento e desenvolvimento. A partir do exposto, este trabalho teve como objetivo verificar a relação entre o carregamento de mochilas escolares e a presença de alterações posturais em adolescentes. Este trabalho trata-se de um estudo transversal. Foi realizado na cidade de Vitória de Santo Antão, com adolescentes estudantes de uma escola pública na faixa etária de 10 a 14 anos de ambos os sexos. Os adolescentes foram selecionados aleatoriamente, com o consentimento de seus responsáveis. Os instrumentos utilizados foram um formulário de pesquisa contendo dados pessoais, peso, altura, dados sobre a mochila escolar, um instrumento de avaliação postural e o inventário da dor de Becker. Os dados foram tabulados e passaram por análises estatísticas. Houve associação estatisticamente significativa entre o uso de alças ajustáveis com a faixa etária uso de costas almofadadas e sexo; uso de duas alças apoiadas nos ombros e sexo; tempo de trajeto de deslocamento com a presença de alterações posturais; e uso de alças ajustáveis com a presença de alterações posturais. Este panorama reflete na necessidade de intervenções baseadas em processos educativos, tanto para os adolescentes, pais e professores para que esse quadro se reverta, diminuindo, assim, os agravos à saúde. Apesar das limitações apresentadas pelo estudo, novas pesquisas ainda devem ser realizadas.
Advisors/Committee Members: CORREIA, Walter Franklin (advisor).
Subjects/Keywords: Adolescente;
Mochilas escolares;
Alterações posturais;
Adolescent;
School backpack;
Postural alterations
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
ALEIXO, J. D. A. (2015). Estudo da relação das alterações posturais em adolescentes com o uso de mochilas escolares
. (Thesis). Universidade Federal de Pernambuco. Retrieved from http://repositorio.ufpe.br/handle/123456789/16270
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
ALEIXO, Joseph Daniel Alves. “Estudo da relação das alterações posturais em adolescentes com o uso de mochilas escolares
.” 2015. Thesis, Universidade Federal de Pernambuco. Accessed January 15, 2021.
http://repositorio.ufpe.br/handle/123456789/16270.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
ALEIXO, Joseph Daniel Alves. “Estudo da relação das alterações posturais em adolescentes com o uso de mochilas escolares
.” 2015. Web. 15 Jan 2021.
Vancouver:
ALEIXO JDA. Estudo da relação das alterações posturais em adolescentes com o uso de mochilas escolares
. [Internet] [Thesis]. Universidade Federal de Pernambuco; 2015. [cited 2021 Jan 15].
Available from: http://repositorio.ufpe.br/handle/123456789/16270.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
ALEIXO JDA. Estudo da relação das alterações posturais em adolescentes com o uso de mochilas escolares
. [Thesis]. Universidade Federal de Pernambuco; 2015. Available from: http://repositorio.ufpe.br/handle/123456789/16270
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Georgia
5.
Price, Alison Louise.
Development and evaluation of sampling protocols for at-risk fishes in wadeable warmwater streams.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/25283
► Natural resource managers make decisions based on the analyses of fish sample data; hence it is imperative to use unbiased data with low variance. The…
(more)
▼ Natural resource managers make decisions based on the analyses of fish sample data; hence it is imperative to use unbiased data with low variance. The ability to capture fishes (capture efficiency) varies among methods and site- and
species-characteristics. Failure to account for capture efficiency can bias sample data. High variance also influences data quality and can obfuscate important relationships and population trends. I evaluated two commonly-used fish sampling protocols in
31 streams the Upper Coosa Basin, Georgia, modeled fish capture efficiency, and evaluated the sources of sample variance. Capture efficiency was low and varied among species, between methods, and was related to stream habitat characteristics. I also
estimated fish movement out of unblocked sample units during sampling and calculated unconditional capture efficiency. Failure to account for incomplete capture of fish introduces bias and variance in sampling data and may lead to poor inference,
particularly for at-risk fishes.
Subjects/Keywords: stream fish; sampling; protocol; capture efficiency; capture-recapture; backpack electrofishing; seining
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Price, A. L. (2014). Development and evaluation of sampling protocols for at-risk fishes in wadeable warmwater streams. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/25283
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Price, Alison Louise. “Development and evaluation of sampling protocols for at-risk fishes in wadeable warmwater streams.” 2014. Thesis, University of Georgia. Accessed January 15, 2021.
http://hdl.handle.net/10724/25283.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Price, Alison Louise. “Development and evaluation of sampling protocols for at-risk fishes in wadeable warmwater streams.” 2014. Web. 15 Jan 2021.
Vancouver:
Price AL. Development and evaluation of sampling protocols for at-risk fishes in wadeable warmwater streams. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Jan 15].
Available from: http://hdl.handle.net/10724/25283.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Price AL. Development and evaluation of sampling protocols for at-risk fishes in wadeable warmwater streams. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/25283
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
North Carolina State University
6.
Southard, Stephanie Ann.
Evaluating a New Design for the NASA SCAPE Harness.
Degree: MS, Industrial Engineering, 2005, North Carolina State University
URL: http://www.lib.ncsu.edu/resolver/1840.16/2939
► The National Aeronautical Space Administration (NASA) uses a backpack system as a form of load carriage in the Self Contained Atmospheric Protective Ensemble (SCAPE) suits.…
(more)
▼ The National Aeronautical Space Administration (NASA) uses a
backpack system as a form of load carriage in the Self Contained Atmospheric Protective Ensemble (SCAPE) suits. SCAPE suits, which are completely enclosed suits, are required in areas where fuel and an oxidizer are present and can spontaneously ignite on contact (hypergolic atmospheres). Inside the SCAPE suit, a person wears a "
backpack", which consists of a 40 pound environmental control unit (ECU) attached to a "
backpack" harness. Interviews was conducted with current and former SCAPE employees to identify the body positions assumed while performing common tasks during a SCAPE operation, and to explore issues of discomfort while wearing the harness. The purpose of this research has been to develop and evaluate a new harness by comparing it with the current NASA harness in terms of biomechanical loading and subjective assessment.
A Kelty® Sierra Crest M'S external framed pack was chosen as the harness to modify, because it featured many components that are important to a supportive pack, including an external frame, a padded hip belt, load lifter straps, padded shoulder straps, and an adjustable harness for varied torso lengths. In addition to this basic design, lateral stiffness rods were added to the harness to help transfer the load from the shoulders to the hips.
To test the biomechanical effects of the NASA harness and the new harness on the body, the muscle activity of the trapezius, erector spinae, and rectus abdominus muscles were recorded using surface electromyography (EMG). While wearing each harness, subjects were required to position their torso in four different forward flexion angles, 15, 30, 45, and 60 degrees, while EMG was recorded. The subjects were also asked to fill out subjective surveys based on the comfort level of the shoulders and low back for each harness.
The results for the trapezius muscles showed that there was a significant effect of the interaction of harness type and forward flexion angle on these muscles. The normalized EMG for the trapezius muscles showed there was a 14% and 11% reduction in muscle activity at 15 and 30 degrees, respectively, with the new harness compared to the NASA harness. The results for the erector spinae muscles showed that there was a significant effect of forward flexion angle and the interaction of harness type and forward flexion angle on the these muscles. The normalized EMG for the erector spinae muscles showed there was a 24% and 14% reduction in muscle activity at 15 and 30 degrees, respectively, with the new harness compared to the NASA harness. The rectus adominus muscles did have a significant effect of forward flexion angle, although there was not a distinguishable difference in muscle activity between the new harness and the NASA harness.
The subjective surveys agreed with the EMG results, which showed the new harness was more comfortable with respect to the shoulder and low back areas, as well as overall comfort than the NASA harness. Using…
Advisors/Committee Members: Gary A. Mirka, Committee Chair (advisor).
Subjects/Keywords: backpack; harness; EMG; SCAPE
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Southard, S. A. (2005). Evaluating a New Design for the NASA SCAPE Harness. (Thesis). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/2939
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Southard, Stephanie Ann. “Evaluating a New Design for the NASA SCAPE Harness.” 2005. Thesis, North Carolina State University. Accessed January 15, 2021.
http://www.lib.ncsu.edu/resolver/1840.16/2939.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Southard, Stephanie Ann. “Evaluating a New Design for the NASA SCAPE Harness.” 2005. Web. 15 Jan 2021.
Vancouver:
Southard SA. Evaluating a New Design for the NASA SCAPE Harness. [Internet] [Thesis]. North Carolina State University; 2005. [cited 2021 Jan 15].
Available from: http://www.lib.ncsu.edu/resolver/1840.16/2939.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Southard SA. Evaluating a New Design for the NASA SCAPE Harness. [Thesis]. North Carolina State University; 2005. Available from: http://www.lib.ncsu.edu/resolver/1840.16/2939
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
7.
Sánchez, Carlos Jiménez.
Design of a backpack container with cooking and eating tools.
Degree: Technology and Society, 2012, University of Skövde
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-6409
► The aim of this project was to develop a product in cooperation with Primus Company in Stockholm. It consisted of designing a container with…
(more)
▼ The aim of this project was to develop a product in cooperation with Primus Company in Stockholm. It consisted of designing a container with the items needed when cooking and eating outdoors, in order to help the users eat and cook in a proper way while practicing activities such as camping or hiking. Considering the specifications posed by Primus, research was done. One of the main issues to start this research was to carry out a market analysis in order to know all the products similar to the one that was going to be developed. Then, an analysis of the company and the main competitors of it was done in order to develop a product with Primus style and to get ideas for the product. In addition, a questionnaire study directed to potential users was carried out. In this way, it was possible to get to know things such as which items people usually carry in their backpack for cooking and eating outdoors and which ones they considered essential. This helped with making a choice of what the product should contain. Once all the information collected from the research and from the study of the specifications was prioritized, the concept development phase started. For reaching an outcome, many aspects such as the items that the container should include, the shape of the container and the best material for the product were discussed. Primus TetraCube is a product that suits all the requirements established at the beginning. In this way, Primus TetraCube is a product that can be carried in an 80 litres backpack and where the user can store all the necessary items for four people who want to eat and cook outdoors. It has also been designed taking into consideration all the details, resulting in a product that follows the aesthetics of Primus with soft shapes and colours such as red, black and grey. Everything combined make Primus TetraCube a comfortable product which helps the user feel at home in terms of convenience and comfort.
Subjects/Keywords: Primus; design; product; container; space-saving; backpack; outdoors; cooking; eating; camping
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sánchez, C. J. (2012). Design of a backpack container with cooking and eating tools. (Thesis). University of Skövde. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-6409
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sánchez, Carlos Jiménez. “Design of a backpack container with cooking and eating tools.” 2012. Thesis, University of Skövde. Accessed January 15, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-6409.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sánchez, Carlos Jiménez. “Design of a backpack container with cooking and eating tools.” 2012. Web. 15 Jan 2021.
Vancouver:
Sánchez CJ. Design of a backpack container with cooking and eating tools. [Internet] [Thesis]. University of Skövde; 2012. [cited 2021 Jan 15].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-6409.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sánchez CJ. Design of a backpack container with cooking and eating tools. [Thesis]. University of Skövde; 2012. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-6409
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Arizona State University
8.
Wheeler, Chase Bryan.
Load Carrying Assistance Device: Pogo Suit.
Degree: Mechanical Engineering, 2014, Arizona State University
URL: http://repository.asu.edu/items/27430
► Wearable robots including exoskeletons, powered prosthetics, and powered orthotics must add energy to the person at an appropriate time to enhance, augment, or supplement human…
(more)
▼ Wearable robots including exoskeletons, powered
prosthetics, and powered orthotics must add energy to the person at
an appropriate time to enhance, augment, or supplement human
performance. Adding energy while not being in sync with the user
can dramatically hurt performance making it necessary to have
correct timing with the user. Many human tasks such as walking,
running, and hopping are repeating or cyclic tasks and a robot can
add energy in sync with the repeating pattern for assistance. A
method has been developed to add energy at the appropriate time to
the repeating limit cycle based on a phase oscillator. The phase
oscillator eliminates time from the forcing function which is based
purely on the motion of the user. This approach has been simulated,
implemented and tested in a robotic backpack which facilitates
carrying heavy loads. The device oscillates the load of the
backpack, based on the motion of the user, in order to add energy
at the correct time and thus reduce the amount of energy required
for walking with a heavy load. Models were developed in Working
Model 2-D, a dynamics simulation software, in conjunction with
MATLAB to verify theory and test control methods. The control
system developed is robust and has successfully operated on a range
of different users, each with their own different and distinct
gait. The results of experimental testing validated the
corresponding models.
Subjects/Keywords: Mechanical engineering; Robotics; Phase Oscillator; Phase Plane Control; Robotic Backpack
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wheeler, C. B. (2014). Load Carrying Assistance Device: Pogo Suit. (Masters Thesis). Arizona State University. Retrieved from http://repository.asu.edu/items/27430
Chicago Manual of Style (16th Edition):
Wheeler, Chase Bryan. “Load Carrying Assistance Device: Pogo Suit.” 2014. Masters Thesis, Arizona State University. Accessed January 15, 2021.
http://repository.asu.edu/items/27430.
MLA Handbook (7th Edition):
Wheeler, Chase Bryan. “Load Carrying Assistance Device: Pogo Suit.” 2014. Web. 15 Jan 2021.
Vancouver:
Wheeler CB. Load Carrying Assistance Device: Pogo Suit. [Internet] [Masters thesis]. Arizona State University; 2014. [cited 2021 Jan 15].
Available from: http://repository.asu.edu/items/27430.
Council of Science Editors:
Wheeler CB. Load Carrying Assistance Device: Pogo Suit. [Masters Thesis]. Arizona State University; 2014. Available from: http://repository.asu.edu/items/27430
University of Arizona
9.
Alhudaib, Noura.
Exploring the Funds of Knowledge and Islamic Practices in Muslim Immigrant Families
.
Degree: 2018, University of Arizona
URL: http://hdl.handle.net/10150/633154
► Teachers and scholars have long discussed the advantages of conducting home visits to discover funds of knowledge present in households as way to better understand…
(more)
▼ Teachers and scholars have long discussed the advantages of conducting home visits to discover funds of knowledge present in households as way to better understand and better communicate with their students in order to strengthen academic progress and learning. In Saudi Arabia, there exists a large gap between the societal needs and what and how curriculum is being taught in schools. The system lacks an effective way to integrate students’ funds of knowledge with what is taught in the classroom.
The purpose of this study is to understand how home visits can be beneficial to the instructor and to the learner in the classroom based on the studies conducted in Moll, Amanti, and Gonzalez in Funds of Knowledge and in my study, Exploring The Funds of Knowledge in Muslim Immigrant Families. In addition, the study aims to show how Saudi Arabia can implement and benefit from the use of home visits. This study took place in Tucson, Arizona in the homes of three Muslim immigrant families whose children attend Al fajir Islamic School. I worked with 3 families from Egypt, Pakistan, and Somalia, all who had first/second graders attending Al Fajir Islamic School. The general approach in this research design is qualitative and includes observations, ethnographic data collection strategies, and interviews. Each family participated in three or four home visits. Each home visit lasted up to three hours. The data collected from the home visits included my field notes, the audiotapes of the interview questions and responses, and transcriptions from taping. Analysis indicated that the value of education, the significance of family relationships, maintenance of maternal tongue, deference to other cultures, and the continuation of religious practices were all fundamental components of the Muslim immigrants’ funds of knowledge. I learned that they were all rooted in the religion of Islam. In conclusion, the use of the home visit proves highly effective in the discovery of funds of knowledge of students. It is recommended, in order to bridge the gap in education between societal expectations and actuality in the classroom, that the technique of home visits be implemented.
Advisors/Committee Members: Short, Kathleen (advisor), Duran, Leah (committeemember), Gilmore, Perry (committeemember).
Subjects/Keywords: backpack story;
funds of knowledge;
home visit;
Islamic practices;
muslim family
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Alhudaib, N. (2018). Exploring the Funds of Knowledge and Islamic Practices in Muslim Immigrant Families
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/633154
Chicago Manual of Style (16th Edition):
Alhudaib, Noura. “Exploring the Funds of Knowledge and Islamic Practices in Muslim Immigrant Families
.” 2018. Doctoral Dissertation, University of Arizona. Accessed January 15, 2021.
http://hdl.handle.net/10150/633154.
MLA Handbook (7th Edition):
Alhudaib, Noura. “Exploring the Funds of Knowledge and Islamic Practices in Muslim Immigrant Families
.” 2018. Web. 15 Jan 2021.
Vancouver:
Alhudaib N. Exploring the Funds of Knowledge and Islamic Practices in Muslim Immigrant Families
. [Internet] [Doctoral dissertation]. University of Arizona; 2018. [cited 2021 Jan 15].
Available from: http://hdl.handle.net/10150/633154.
Council of Science Editors:
Alhudaib N. Exploring the Funds of Knowledge and Islamic Practices in Muslim Immigrant Families
. [Doctoral Dissertation]. University of Arizona; 2018. Available from: http://hdl.handle.net/10150/633154
Queens University
10.
Fergenbaum, Mitchell Alan.
Development of safety limits for load carriage in adults
.
Degree: Rehabilitation Science, 2007, Queens University
URL: http://hdl.handle.net/1974/855
► In society, personal load carriage systems (backpacks) are commonly used to transport loads by foot, however, they have also been implicated in causing injuries. The…
(more)
▼ In society, personal load carriage systems (backpacks) are commonly used to transport loads by foot, however, they have also been implicated in causing injuries. The aim of this study was to develop a model for load carriage which could be used to determine safety limits in humans. To start, a number of experiments were conducted to determine the appropriateness of using pressure mapping technology to measure peak and mean pressures acting on humans during load carriage limits. Tests of accuracy and repeatability were performed using three common pressure mapping technologies: capacitance, piezoresistive and resistive ink. Pressure mapping was tested statically and dynamically on a human-like flat surface, as well as on human shoulder-shaped model. Error was found to be ≥ 20% on static flat and curved surfaces and it rose to 36-51% under dynamic conditions. Since pressure mapping would require significant modifications before it could be used to study human load carriage, a psychophysical approach was used instead. For this approach, an epidemiological study of pain was conducted based on 48 subjects who used multiple backpack designs to complete occupationally relevant tasks. As a result, pain trends and new methods of data analysis were identified that had potential use on human trials. In a final study, pain mapping, quantification of pain intensity, and physiological/motor testing were conducted on humans performing endurance exercise with light to heavy payloads. Results showed that all subjects were able to exercise with a 15-35 kg payload for 45 minutes and with a 50 kg payload for 30 minutes, without stopping. As well, pain was found to be highest in the anterior acromial (shoulder) region, particularly for the 50 kg payload (mean peak pain = 3.4/10). Based on these findings, two models were proposed: an assertive model and a conservative model to allow prediction of human load carriage limits for endurance exercise.
Subjects/Keywords: Load carriage
;
Backpack
;
Safety
;
Payload
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Fergenbaum, M. A. (2007). Development of safety limits for load carriage in adults
. (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/855
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Fergenbaum, Mitchell Alan. “Development of safety limits for load carriage in adults
.” 2007. Thesis, Queens University. Accessed January 15, 2021.
http://hdl.handle.net/1974/855.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fergenbaum, Mitchell Alan. “Development of safety limits for load carriage in adults
.” 2007. Web. 15 Jan 2021.
Vancouver:
Fergenbaum MA. Development of safety limits for load carriage in adults
. [Internet] [Thesis]. Queens University; 2007. [cited 2021 Jan 15].
Available from: http://hdl.handle.net/1974/855.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fergenbaum MA. Development of safety limits for load carriage in adults
. [Thesis]. Queens University; 2007. Available from: http://hdl.handle.net/1974/855
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
11.
Messineo, Dan.
Doing it alone: do video journalists affect the quality and credibility of television news?.
Degree: MS(M.S.), Journalism and Technical Communication, 2015, Colorado State University
URL: http://hdl.handle.net/10217/166922
► The recent financial pressures on local TV news stations have forced many owners and managers to cover the day's events with fewer employees. Many station…
(more)
▼ The recent financial pressures on local TV news stations have forced many owners and managers to cover the day's events with fewer employees. Many station owners have turned to video journalists to cut newsroom costs. The video journalist, also called "
backpack journalist," does it all. These intrepid reporters conduct interviews; write scripts, shoot and edit their video. With so many stations turning to video journalism, this research explores how and to what extent video journalists affect the quality and credibility of TV news.
Advisors/Committee Members: Champ, Joe (advisor), Luft, Greg (committee member), Kelly, Kathleen (committee member).
Subjects/Keywords: journalism; backpack journalism; video
…TVUPack. The TVUPack is a “portable, lightweight video capture and
transmission backpack that… …truck once. In an interview for Backpack Live Technology a
TV News Game Changer, Jeff Houston… …on to talk about the benefit of using a TVU backpack, “One
person can do a self-contained… …just cannot go. I connect the
backpack to a camera with a USB cord and the TVUPack… …turn ugly. My camera
has inexplicably turned off, the backpack signal has been too weak to…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Messineo, D. (2015). Doing it alone: do video journalists affect the quality and credibility of television news?. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/166922
Chicago Manual of Style (16th Edition):
Messineo, Dan. “Doing it alone: do video journalists affect the quality and credibility of television news?.” 2015. Masters Thesis, Colorado State University. Accessed January 15, 2021.
http://hdl.handle.net/10217/166922.
MLA Handbook (7th Edition):
Messineo, Dan. “Doing it alone: do video journalists affect the quality and credibility of television news?.” 2015. Web. 15 Jan 2021.
Vancouver:
Messineo D. Doing it alone: do video journalists affect the quality and credibility of television news?. [Internet] [Masters thesis]. Colorado State University; 2015. [cited 2021 Jan 15].
Available from: http://hdl.handle.net/10217/166922.
Council of Science Editors:
Messineo D. Doing it alone: do video journalists affect the quality and credibility of television news?. [Masters Thesis]. Colorado State University; 2015. Available from: http://hdl.handle.net/10217/166922
Brno University of Technology
12.
Mužík, Tibor.
Expediční krosna: The Backpack.
Degree: 2019, Brno University of Technology
URL: http://hdl.handle.net/11012/35792
► Expedition Blue 60 + 10 backpack is suitable for multi-day expedition crossing the mountains and up to 5000 m By removing the side pockets and…
(more)
▼ Expedition Blue 60 + 10
backpack is suitable for multi-day expedition crossing the mountains and up to 5000 m By removing the side pockets and outer frame, it can also be used for shorter trips. It has an outer support frame, which allows rapid positioning equipment and tidy. Facilities clamp with rubber clamps or using rifles. The frame is removable as needed. Anatomically shaped
backpack has adjustable back system with duralumin braces, padded and breathable anatomically shaped shoulder straps and waist straps, two main compartment with additional side access to main compartment, side and bottom compression straps, sternum strap and adjustable top lid with pocket. The membrane between the upper and lower main chamber are formed pulling of textiles.
Advisors/Committee Members: Zdařil, Zdeněk (advisor), Vackář, Jiří (referee).
Subjects/Keywords: Sport - outdoor - Husky s.r.o. - expedice - přechody hor - krosna - funkce krosny - nosný rám - designové prvky; Sport - outdoor - Husky s.r.o. - expedition - crossing the mountains - backpack - backpack function - supporting frame - design elements
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mužík, T. (2019). Expediční krosna: The Backpack. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/35792
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Mužík, Tibor. “Expediční krosna: The Backpack.” 2019. Thesis, Brno University of Technology. Accessed January 15, 2021.
http://hdl.handle.net/11012/35792.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mužík, Tibor. “Expediční krosna: The Backpack.” 2019. Web. 15 Jan 2021.
Vancouver:
Mužík T. Expediční krosna: The Backpack. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 15].
Available from: http://hdl.handle.net/11012/35792.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mužík T. Expediční krosna: The Backpack. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/35792
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Penn State University
13.
Bauer, Denise Helen.
A Recommendation for the Backpack Load Limit of Middle School Students Based on Physiological and Psychophysical Measurements.
Degree: 2008, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/7927
► Over 40 million students in the United States use a backpack to carry items to and from school everyday as it is designed to hold…
(more)
▼ Over 40 million students in the United States use a
backpack to carry items to and from school everyday as it is designed to hold different objects in an organized manner. However, the load of children’s backpacks has caused debate over the recent years. Whether the problem is thought to be related to the belief that textbooks are too large for children to carry or the backpacks are loaded and carried incorrectly, the consensus is that there is a definite safety issue present and a need to be proactive in providing recommendations before severe health issues present themselves. The purpose of the planned research is to use electromyography (EMG), posture evaluation, heart rate, and ratings of perceived exertion and perceptions of pain to find an acceptable
backpack load limit. These experiments will help narrow the acceptable load limit by providing additional analysis to the current literature on
backpack loads and children. The study will also explore the possible differences between a
backpack with many ergonomic features and a more generic
backpack with only a couple ergonomic features. It may be that the type of
backpack used is more of a problem than the actual load.
Twenty middle school students aged 11 to 14 (10 female and 10 male) volunteered for the study. Two backpacks were used in the study: one with standard comfort features and one with ergonomic features. The subjects completed two tests: standing stationary and walking on a treadmill. For both tests, the subjects first had two trials without any load (0%) then two trials with each of the two backpacks at loads of 10, 15, and 20% of the subject’s body weight (BW). EMG activity of the trapezius, latissimus dorsi, and erector spinae was collected using triode surface electrodes while the subjects stood for 3 min. For the walking trials, the subjects walked on a treadmill at 2.41 km/hr for 3 min. In both tests, every 1 min the subjects were asked to give a Borg-RPE and their heart rate. The subjects were also asked to rate the pain they felt in their shoulders, middle back, lower back, and whole body using the Borg CR10 Scale of Perceived Pain.
The study was conducted to gather more evidence on the vital problem of children carrying backpacks that may cause long-term harm, and to attempt to support one load limit over the other. The possibility of needing to adjust the Borg RPE-Scale for the study age was also explored. The research indicated that: (1) The CR10 ratings and trunk forward lean for the walking trial indicated a possible load limit of 10% BW due to the significant difference between 10 and 15% BW. (2) There was no significant difference between backpacks, concluding that the best
backpack may just be a matter of personal choice. (3)The data was inconclusive on whether the RPE-Scale should be adjusted for children. Further studies on various dynamic activities should be explored.
Future research should be conducted to include factors such as testing actual
backpack mass instead of %BW, using BMI to group subjects, more subjects for each age,…
Advisors/Committee Members: Andris Freivalds, Committee Chair/Co-Chair, Leah C Newman, Committee Member, Ling Rothrock, Committee Member, Richard Donovan Koubek, Committee Member, John Henry Challis, Committee Member.
Subjects/Keywords: children and backpacks; backpack load limits
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bauer, D. H. (2008). A Recommendation for the Backpack Load Limit of Middle School Students Based on Physiological and Psychophysical Measurements. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/7927
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bauer, Denise Helen. “A Recommendation for the Backpack Load Limit of Middle School Students Based on Physiological and Psychophysical Measurements.” 2008. Thesis, Penn State University. Accessed January 15, 2021.
https://submit-etda.libraries.psu.edu/catalog/7927.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bauer, Denise Helen. “A Recommendation for the Backpack Load Limit of Middle School Students Based on Physiological and Psychophysical Measurements.” 2008. Web. 15 Jan 2021.
Vancouver:
Bauer DH. A Recommendation for the Backpack Load Limit of Middle School Students Based on Physiological and Psychophysical Measurements. [Internet] [Thesis]. Penn State University; 2008. [cited 2021 Jan 15].
Available from: https://submit-etda.libraries.psu.edu/catalog/7927.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bauer DH. A Recommendation for the Backpack Load Limit of Middle School Students Based on Physiological and Psychophysical Measurements. [Thesis]. Penn State University; 2008. Available from: https://submit-etda.libraries.psu.edu/catalog/7927
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Miami
14.
Kistner, Frances Elizabeth.
Postural Compensations and Subjective Complaints Due to Backpack Loads and Wear Time in Schoolchildren Aged 8 to 11.
Degree: PhD, Physical Therapy (Medicine), 2011, University of Miami
URL: https://scholarlyrepository.miami.edu/oa_dissertations/613
► Backpacks are used by more than 90% of schoolchildren worldwide and over 40 million students in the United States on a regular basis. The…
(more)
▼ Backpacks are used by more than 90% of schoolchildren worldwide and over 40 million students in the United States on a regular basis. The carriage of loaded backpacks is associated with kinematic and physiological changes, as well as complaints of neck and back pain. Since a history of backpain in childhood is the strongest predictor of having musculoskeletal discomfort and back pain as an adult, development of back pain due to
backpack use is of prognostic concern. The purpose of this dissertation was to examine the effects of
backpack weights (up to 20% body weight (BW)) on children’s posture, subjective complaints of pain and perceived exertion, and walking endurance. A secondary goal was to examine the data to identify and recommend a weight limit for backpacks carried by elementary school children based on the results. In Chapter 2, we performed a preliminary study designed to examine the effects of loaded backpacks on forward head posture in school children. The results of this study found that forward head posture increased with both
backpack weight and condition. The greatest differences were noted at the 15% and 20%BW
backpack loads with initial loading, but after 6 minutes of walking the forward head posture was similar for all
backpack loads. In Chapter 3, we conducted a study to evaluate multiple postural angles and the subjective complaints of pain and perceived exertion/fatigue in children to determine the effects of both the weight and time spent carrying loaded backpacks up to 20%BW. Subjects showed significant changes in all measures including the Six Minute Walk Test (6MWT), OMNI Walk/Run Scale of perceived exertion/fatigue and subjective complaints of pain, as well as the postural angles of Craniovertebral Angle, Forward Trunk Lean, and Pelvic Tilt. Subjects demonstrated immediate and significant changes in forward head posture, forward trunk lean, and pelvic tilt while wearing backpacks weighing 10%, 15% and 20%BW, but the 10%BW
backpack resulted in the least amount of change. This study also found that these postural angles changed additionally after walking 6 minutes while carrying the loaded backpacks. Subjects also demonstrated decreased 6MWT distances and increased reports of perceived exertion and pain after carrying backpacks weighing 10%, 15% and 20%BW. In Chapter 4, we discussed the clinical implications of this research. It was determined that
backpack loads weighing 10%, 15% and 20%BW of a child’s body weight result in immediate changes in posture, which continue to increase after walking six minutes with the loaded
backpack. The
backpack loads significantly impacted the children’s walking endurance as well as their reports of perceived exertion/fatigue and regional pain. This study found that of the loads tested, the 10%BW resulted in the least amount of change in all outcome measures. However, the 10%BW load was not innocuous, as it still created significant changes in posture and subjective complaints.
Backpack weight limit guidelines need to be written to protect children from…
Advisors/Committee Members: Ira M. Fiebert, Kathryn E. Roach, Penny G. Kroll, James G. Moore.
Subjects/Keywords: backpack; postural compensation; children; subjective complaints; forward head posture; forward trunk lean
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kistner, F. E. (2011). Postural Compensations and Subjective Complaints Due to Backpack Loads and Wear Time in Schoolchildren Aged 8 to 11. (Doctoral Dissertation). University of Miami. Retrieved from https://scholarlyrepository.miami.edu/oa_dissertations/613
Chicago Manual of Style (16th Edition):
Kistner, Frances Elizabeth. “Postural Compensations and Subjective Complaints Due to Backpack Loads and Wear Time in Schoolchildren Aged 8 to 11.” 2011. Doctoral Dissertation, University of Miami. Accessed January 15, 2021.
https://scholarlyrepository.miami.edu/oa_dissertations/613.
MLA Handbook (7th Edition):
Kistner, Frances Elizabeth. “Postural Compensations and Subjective Complaints Due to Backpack Loads and Wear Time in Schoolchildren Aged 8 to 11.” 2011. Web. 15 Jan 2021.
Vancouver:
Kistner FE. Postural Compensations and Subjective Complaints Due to Backpack Loads and Wear Time in Schoolchildren Aged 8 to 11. [Internet] [Doctoral dissertation]. University of Miami; 2011. [cited 2021 Jan 15].
Available from: https://scholarlyrepository.miami.edu/oa_dissertations/613.
Council of Science Editors:
Kistner FE. Postural Compensations and Subjective Complaints Due to Backpack Loads and Wear Time in Schoolchildren Aged 8 to 11. [Doctoral Dissertation]. University of Miami; 2011. Available from: https://scholarlyrepository.miami.edu/oa_dissertations/613
Kristianstad University
15.
Chen, Qinqing.
Improve Improper Load Distribution with Backpack.
Degree: Faculty of Natural Science, 2018, Kristianstad University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-18766
► This article focuses on the distribution of backpack pressure on human body. We have noticed two interesting situations: whether the length of different backpack…
(more)
▼ This article focuses on the distribution of backpack pressure on human body. We have noticed two interesting situations: whether the length of different backpack shoulder straps will change the pressure distribution of the backpack on the human body and whether different positions of the backpack load will change the pressure distribution of the backpack on the human body. To find the answer, we designed a backpack pressure detection system to collect data and use engineering software to analyse the data.We got the range that best fits the human body and the healthiest backpack: when the distance from the top of the backpack to the shoulder is about 1/5 of the length of the shoulder and the weight of the backpack is at the bottom of the backpack. At this time, the force of the three parts of the human body (shoulders, back) is the most uniform and relatively minimal. If the user wants to minimize the pressure on the shoulder, the shoulder strap of the backpack should be as short as possible. If the user only wants the pressure on the back to be minimal, the weight in the backpack is closer to the back, which is better for the back.
Subjects/Keywords: Backpack; Strap length; Load distribution; Load position; Back pain; Computer Sciences; Datavetenskap (datalogi)
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chen, Q. (2018). Improve Improper Load Distribution with Backpack. (Thesis). Kristianstad University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-18766
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chen, Qinqing. “Improve Improper Load Distribution with Backpack.” 2018. Thesis, Kristianstad University. Accessed January 15, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-18766.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Qinqing. “Improve Improper Load Distribution with Backpack.” 2018. Web. 15 Jan 2021.
Vancouver:
Chen Q. Improve Improper Load Distribution with Backpack. [Internet] [Thesis]. Kristianstad University; 2018. [cited 2021 Jan 15].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-18766.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen Q. Improve Improper Load Distribution with Backpack. [Thesis]. Kristianstad University; 2018. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-18766
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
16.
Dahl, Kimberly DeAnna.
Load distribution and postural changes in young adults when wearing a traditional backpack versus the BackTpack.
Degree: Thesis (M.S.), 2015, Ball State University
URL: http://cardinalscholar.bsu.edu/handle/123456789/199845
► Over 40 million students in the U.S. use backpacks regularly. Backpacks lead to poor posture due to the posterior placement of the load, which overtime…
(more)
▼ Over 40 million students in the U.S. use backpacks regularly. Backpacks lead to poor posture due to the posterior placement of the load, which overtime may contribute to low back pain and musculoskeletal complications. This study examined postural and load distribution differences between a traditional
backpack (BP) and a nontraditional
backpack (BTP) in a young adult population. Using a 3D motion analysis system, 24 healthy young adults (22.5±2.5 years, 12 male) completed both static stance and walking trials on a treadmill with no load and with 15% and 25% of their body weight using the two different backpacks. There was a significant difference in trunk angle, head angle, and lower extremity joint mechanics between the
backpack and load conditions during walking (p<.05). There was also a significant difference in head angle from pre- to post-walk (p<.05). Taken together, the results indicate that the BTP more closely resembled the participants’ natural stance and gait patterns as determined by the No Load condition. The more upright posture supported by the BTP may help reduce characteristics of poor posture and ideally help to reduce low back pain while carrying loads.
Advisors/Committee Members: Dickin, Clark (advisor).
Subjects/Keywords: Backpack – Physiological effect.; Hip joint – Mechanical properties.; Knee – Mechanical properties.; Posture.; Young adults.
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dahl, K. D. (2015). Load distribution and postural changes in young adults when wearing a traditional backpack versus the BackTpack. (Masters Thesis). Ball State University. Retrieved from http://cardinalscholar.bsu.edu/handle/123456789/199845
Chicago Manual of Style (16th Edition):
Dahl, Kimberly DeAnna. “Load distribution and postural changes in young adults when wearing a traditional backpack versus the BackTpack.” 2015. Masters Thesis, Ball State University. Accessed January 15, 2021.
http://cardinalscholar.bsu.edu/handle/123456789/199845.
MLA Handbook (7th Edition):
Dahl, Kimberly DeAnna. “Load distribution and postural changes in young adults when wearing a traditional backpack versus the BackTpack.” 2015. Web. 15 Jan 2021.
Vancouver:
Dahl KD. Load distribution and postural changes in young adults when wearing a traditional backpack versus the BackTpack. [Internet] [Masters thesis]. Ball State University; 2015. [cited 2021 Jan 15].
Available from: http://cardinalscholar.bsu.edu/handle/123456789/199845.
Council of Science Editors:
Dahl KD. Load distribution and postural changes in young adults when wearing a traditional backpack versus the BackTpack. [Masters Thesis]. Ball State University; 2015. Available from: http://cardinalscholar.bsu.edu/handle/123456789/199845
Virginia Tech
17.
Liu, Mingyi.
Energy Harvesting from the Human Body for Wearable and Mobile Devices.
Degree: PhD, Mechanical Engineering, 2020, Virginia Tech
URL: http://hdl.handle.net/10919/99305
► Wearable and mobile devices are an important part of our daily life. Most of those devices are powered by batteries. The limited life span of…
(more)
▼ Wearable and mobile devices are an important part of our daily life. Most of those devices are powered by batteries. The limited life span of batteries constitutes a limitation, especially in a multiple-day expedition, where electrical power can not access conveniently. At the same time, there is a huge amount of energy stored in the human body. While walking, there is a large amount of power dissipated in the human body as negative muscle work and the energy loss by impact. By sourcing locally and using locally, human body energy harvesting is a promising solution. This dissertation focuses on harvesting energy from the human body to power wearable and mobile devices while poses a minimum burden on the human body. Three topics related to the human body energy harvesting are explored, i.e, energy harvesting
backpack, negative muscle work harvester, and energy harvesting tile/paver. The energy harvesting
backpack was invented in 2006. Extensive work was done to improve the performance of
backpack energy harvester. The
backpack is modeled as a spring-mass-damper system. Extensive work have been done to make the energy harvesting
backpack broad frequency bandwidth. The negative work harvester mounts on the human ankle and harvests energy in the terminal stance phase in human walking. This harvester is an analogy to regenerative brake in vehicles. The energy harvesting paver/tile harvests energy when the heel contacts with ground and energy are dissipated by impact.
Advisors/Committee Members: Zuo, Lei (committeechair), Queen, Robin Marie (committeechair), Tai, Wei Che (committee member), Parker, Robert G. (committee member), Mahajan, Roop L. (committee member), Hajj, Muhammad Ramiz (committee member).
Subjects/Keywords: energy harvesting; human body; backpack; negative muscle work; ankle energy harvester; energy harvesting tile/paver
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Liu, M. (2020). Energy Harvesting from the Human Body for Wearable and Mobile Devices. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/99305
Chicago Manual of Style (16th Edition):
Liu, Mingyi. “Energy Harvesting from the Human Body for Wearable and Mobile Devices.” 2020. Doctoral Dissertation, Virginia Tech. Accessed January 15, 2021.
http://hdl.handle.net/10919/99305.
MLA Handbook (7th Edition):
Liu, Mingyi. “Energy Harvesting from the Human Body for Wearable and Mobile Devices.” 2020. Web. 15 Jan 2021.
Vancouver:
Liu M. Energy Harvesting from the Human Body for Wearable and Mobile Devices. [Internet] [Doctoral dissertation]. Virginia Tech; 2020. [cited 2021 Jan 15].
Available from: http://hdl.handle.net/10919/99305.
Council of Science Editors:
Liu M. Energy Harvesting from the Human Body for Wearable and Mobile Devices. [Doctoral Dissertation]. Virginia Tech; 2020. Available from: http://hdl.handle.net/10919/99305
University of Kentucky
18.
Suri, Cazmon.
EFFECTS OF BACKPACK TYPE ON KINEMATICS OF THE LOWER BACK DURING WALKING AND JOGGING.
Degree: 2018, University of Kentucky
URL: https://uknowledge.uky.edu/cbme_etds/55
► Heavy backpacks have been suggested to have a pathogenic role in experience of low back pain among children. We have conducted a repeated-measure study to…
(more)
▼ Heavy backpacks have been suggested to have a pathogenic role in experience of low back pain among children. We have conducted a repeated-measure study to investigate the backpack-induced changes in lumbo-pelvic coordination of forty gender-balanced college age students when they walked and jogged on a treadmill with two different types of backpacks: normal and ergonomically modified. The backpack-induced changes in lumbo-pelvic coordination were larger when carrying an ergonomically modified vs. a normal backpack as well as when jogging versus walking. The larger changes in lumbo-pelvic coordination when carrying an ergonomically modified backpack were likely due to kinematic restraints imposed by rigidity and enhanced attachments devised in the backpack for increased comfort. Given the role of lower back biomechanics in low back pain, the effects of such larger mechanical abnormalities in the lower back when carrying an ergonomically-modified backpack on risk of low back pain among children requires further investigation.
Subjects/Keywords: School backpack; Ergonomics; Walking and jogging; Lumbo-pelvic coordination; Biomechanics and Biotransport
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Suri, C. (2018). EFFECTS OF BACKPACK TYPE ON KINEMATICS OF THE LOWER BACK DURING WALKING AND JOGGING. (Masters Thesis). University of Kentucky. Retrieved from https://uknowledge.uky.edu/cbme_etds/55
Chicago Manual of Style (16th Edition):
Suri, Cazmon. “EFFECTS OF BACKPACK TYPE ON KINEMATICS OF THE LOWER BACK DURING WALKING AND JOGGING.” 2018. Masters Thesis, University of Kentucky. Accessed January 15, 2021.
https://uknowledge.uky.edu/cbme_etds/55.
MLA Handbook (7th Edition):
Suri, Cazmon. “EFFECTS OF BACKPACK TYPE ON KINEMATICS OF THE LOWER BACK DURING WALKING AND JOGGING.” 2018. Web. 15 Jan 2021.
Vancouver:
Suri C. EFFECTS OF BACKPACK TYPE ON KINEMATICS OF THE LOWER BACK DURING WALKING AND JOGGING. [Internet] [Masters thesis]. University of Kentucky; 2018. [cited 2021 Jan 15].
Available from: https://uknowledge.uky.edu/cbme_etds/55.
Council of Science Editors:
Suri C. EFFECTS OF BACKPACK TYPE ON KINEMATICS OF THE LOWER BACK DURING WALKING AND JOGGING. [Masters Thesis]. University of Kentucky; 2018. Available from: https://uknowledge.uky.edu/cbme_etds/55
Universidade do Rio Grande do Sul
19.
Moreira, Suzana.
Características da postura corporal de escolares da rede municipal de ensino de Porto Alegre.
Degree: 2008, Universidade do Rio Grande do Sul
URL: http://hdl.handle.net/10183/14728
► Sintomas álgicos, de sobrecarga e de alteração da estrutura corporal estão presentes na população adulta e infanto-juvenil. O objetivo deste estudo foi descrever e associar…
(more)
▼ Sintomas álgicos, de sobrecarga e de alteração da estrutura corporal estão presentes na população adulta e infanto-juvenil. O objetivo deste estudo foi descrever e associar postura ortostática, execução de Atividades de Vida Diária (AVDs), Amplitude de Movimento Articular (ADM) e dor nas costas de escolares. Foram avaliados 430 escolares do ensino fundamental da Rede Municipal de Ensino de Porto Alegre – RS, com idade entre 6 e 18 anos. Foi realizada avaliação da postura ortostática, da postura dinâmica (sentar para escrever e transportar o material escolar), teste de Adams, mensurações do ângulo Q, mensurações das ADMs do quadril, joelho e tornozelo, teste de Schober total e lombar, teste de extensão da coluna total e lombar e avaliação da dor. Os resultados mostraram uma tendência dos escolares posicionarem-se anteriormente ao fio de prumo, independente da faixa etária em que se encontravam. A angulação média observada nas curvaturas da coluna foi 28,67º para lordose cervical, 26,47º para cifose dorsal e 24,42º para lordose lombar. A avaliação do alinhamento horizontal de pontos anatômicos mostrou que estavam alinhados 10,1% dos acrômios, 19,4% das espinhas ilíacas ântero superiores (E.I.A.S.), 20,8% dos ângulos inferiores das escápulas e 42,9% das espinhas ilíacas póstero superiores (E.I.P.S.). O valor médio obtido para ângulo Q do joelho direito foi de 16,20º; e para o joelho esquerdo, 16,60º. O teste de Adams foi positivo em 21,4% com predominância de saliência paraespinhal lombar esquerda seguida de gibosidade dorso-lombar esquerda. Na avaliação da postura sentada para escrever, na qual os avaliados poderiam atingir de 0 a 4 pontos, o maior percentual de escolares obteve um ponto no momento 1 e zero nos momentos 2, 3 e 4 da filmagem. A avaliação sobre transportar material escolar mostrou que 69,2% dos escolares usam mochila e seu peso ultrapassa 10% do peso corporal somente em 9% dos casos. Comparando as médias das ADMs apresentadas pelos avaliados com as divulgadas pela literatura, observou-se que as amplitudes de rotação interna e externa da coxo-femural e flexão plantar do tornozelo do grupo avaliado foram menores. Os escolares apresentaram o valor médio de 8,01 cm para teste de Schober total, o que estava abaixo do considerado adequado pela literatura. Dor foi referida por 29% dos escolares. A região lombar foi a mais mencionada e a intensidade predominou entre média e fraca. Não foi verificada associação entre dor e peso da mochila. Ocorreu diferença significativa entre os que sentiam e não sentiam dor no terceiro momento da análise da filmagem da posição sentada. A amplitude do movimento de flexão da articulação coxo-femural com joelho direito flexionado apresentou diferença significativa entre os que sentiam e não sentiam dor, sendo maior nos que sentiam dor. Os resultados deste estudo fornecem informações a respeito da postura corporal dos escolares do ensino fundamental das escolas municipais de Porto Alegre. Não foi feita uma investigação com o intuito de verificar o que estava certo ou errado, mas…
Advisors/Committee Members: Souza, Jorge Luiz de.
Subjects/Keywords: Posture; Postura corporal; Students; Articulações; To sit; Movimento humano; Dor nas costas; Backpack; Estudantes; Range of motion; Pain; Avaliação
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Moreira, S. (2008). Características da postura corporal de escolares da rede municipal de ensino de Porto Alegre. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/14728
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Moreira, Suzana. “Características da postura corporal de escolares da rede municipal de ensino de Porto Alegre.” 2008. Thesis, Universidade do Rio Grande do Sul. Accessed January 15, 2021.
http://hdl.handle.net/10183/14728.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Moreira, Suzana. “Características da postura corporal de escolares da rede municipal de ensino de Porto Alegre.” 2008. Web. 15 Jan 2021.
Vancouver:
Moreira S. Características da postura corporal de escolares da rede municipal de ensino de Porto Alegre. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2008. [cited 2021 Jan 15].
Available from: http://hdl.handle.net/10183/14728.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Moreira S. Características da postura corporal de escolares da rede municipal de ensino de Porto Alegre. [Thesis]. Universidade do Rio Grande do Sul; 2008. Available from: http://hdl.handle.net/10183/14728
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
20.
Yoo, Byungju.
The effect of carrying a military backpack on a transverse slope and sand surface on lower limb during gait.
Degree: PhD, Mechanical Engineering, 2014, University of Utah
URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2819/rec/2459
► Marching while carrying a backpack load is the most common activity in thearmy so being able to endure such a task is required of all…
(more)
▼ Marching while carrying a backpack load is the most common activity in thearmy so being able to endure such a task is required of all military personnel. It is apredictable source of common injuries. Lower limb injuries in particular are caused notonly by the extra load but also by the type of surface on which the soldier marches. Theobjective of this study was thus to expand on the current knowledge of the biomechanicaleffects of loads by investigating lower limb gait parameters on a sand surface whilecarrying a military backpack.Twenty healthy male participants were recruited from among students at theUniversity of Utah who fit the current U. S. military recruitment criteria. The independentvariables controlled were the surface type (i.e. hard and sand), slope (i.e. flat and slant),backpack type (i.e. no load, MOLLE, and ALICE), and marching speed (i.e. self-selectedand 4 km/h). Data acquisition was performed using 16 NaturalPoint cameras, AMASSsoftware, and 4 force plates.Over all, it was observed that a decrease in cadence, a decrease in stride length,and an increase in double support time occurred as load was added. In terms of the effectsof slope, an increase in double support time and a decrease in stride width were found tooccur on the slanted surface as compared to the flat surface. As for the effects of surfacetype, a decrease in cadence, double support time, and stride length was observed on thesand surface as compared to the hard surface. There was also found to be a generalivincrease in ankle dorsiflexion/plantarflexion, knee flexion/extension, and hipabduction/adduction RoM (Range of Motion) angle on the sand surface as compared tothe hard surface. On the whole, walking on a sand surface thus increased M/L GRF,increased vertical impact force, decreased vertical thrust force, and increased kneeabduction/adduction moment.No difference was detected between the MOLLE and ALICE backpacks in termsof resulting cadence, double support time, and stride length. However, a statisticallysignificant increase in stride width was observed with the MOLLE as compared to theALICE pack. The MOLLE also influenced a statistically significant increase in hipabduction/adduction RoM angle as compared to the ALICE. The ALICE backpack inturn resulted in increased hip A/A moment and higher braking/propulsive forces.Although all of these differences were statistically significant, they are not substantialenough to be considered practically meaningful.From the findings of this research, it is recommended that military training andgeneral operations be minimized in sand environments in order to reduce the injurypotentials discussed above. In unforeseen or unavoidable cases where exposure to suchterrain is prolonged, reducing overall load thus needs to be considered to reduce injurypotential.
Subjects/Keywords: Gait; Military backpack; Sand surface; Transverse slope
…80
Backpack Effect… …87
Backpack × Surface Effect… …87
Backpack × Slope Effect… …4-2. Summary of the main and post-hoc backpack effects… …84
5-2. Summary of the main and post-hoc backpack effects…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yoo, B. (2014). The effect of carrying a military backpack on a transverse slope and sand surface on lower limb during gait. (Doctoral Dissertation). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2819/rec/2459
Chicago Manual of Style (16th Edition):
Yoo, Byungju. “The effect of carrying a military backpack on a transverse slope and sand surface on lower limb during gait.” 2014. Doctoral Dissertation, University of Utah. Accessed January 15, 2021.
http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2819/rec/2459.
MLA Handbook (7th Edition):
Yoo, Byungju. “The effect of carrying a military backpack on a transverse slope and sand surface on lower limb during gait.” 2014. Web. 15 Jan 2021.
Vancouver:
Yoo B. The effect of carrying a military backpack on a transverse slope and sand surface on lower limb during gait. [Internet] [Doctoral dissertation]. University of Utah; 2014. [cited 2021 Jan 15].
Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2819/rec/2459.
Council of Science Editors:
Yoo B. The effect of carrying a military backpack on a transverse slope and sand surface on lower limb during gait. [Doctoral Dissertation]. University of Utah; 2014. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2819/rec/2459
21.
Kurtz, Michael.
Education Production: Teacher Evaluation Models and Weekend Feeding Programs.
Degree: PhD, 2015, University of New Hampshire
URL: https://scholars.unh.edu/dissertation/2212
► Education production and, more generally, human capital production, is a significant driver of economic well-being both locally and nationally. This research informs policy decisions…
(more)
▼ Education production and, more generally, human capital production, is a significant driver of economic well-being both locally and nationally. This research informs policy decisions regarding how educational inputs are utilized and how those inputs can be influenced by the private sector. This dissertation, “Education Production: Teacher Evaluation Models and Weekend Feeding Programs,” is comprised of three chapters. The first addresses the rising issue in education policy of the measurement of student-test-based teacher evaluation. The second examines the scholastic effects of the relatively recent emergence of weekend feeding programs. The third uses the emergence and spread of the same weekend feeding programs to understand the factors affecting the adoption of new charitable programs.
Chapter 1 identifies and explains key differences between the two leading models used in evaluating teachers based on student standardized test scores. Historically, teacher evaluation has been based heavily on subjective measures of assessment. While few policy makers suggest these subjective measures of teacher quality should be discarded, all states now at least recommend the use of objective measures of teacher performance based on student test scores. The two most prominent statistical models of teacher effects, Value Added Models (VAM) and Student Growth Percentile (SGP) models, while conceptually similar, differ in estimation method and can lead to sizable differences in estimated teacher effects. Using a simulation, I evaluate the relationship under clean and controllable conditions. I then verify that the results persist in observed student-teacher data from North Carolina. The two models disagree regarding estimated teacher effects when the classroom distribution of test scores conditional on prior achievement is skewed (i.e. when a teacher serves a disproportionate number of high- or low- growth students). Moreover, the magnitude of skewness needed to drive these models apart by three or more deciles is within the ranges observed in the data. As such, a teacher who appears weak in one model may appear strong when evaluated by the other, yet typically only a single model is used. To further the effective use of these objective evaluation methods in high-stakes decisions such as payment, retention, and tenure, a complete understanding of their differences is vital.
Chapter 2 examines how weekend feeding programs affect both educational and behavioral outcomes. Weekend feeding programs provide weekend food to students who otherwise may have limited access to nutritious food between their free school lunch on Friday and free breakfast at school on Monday. In particular, I focus on the
BackPack program (a national program through the Feeding America food bank) in Northwestern North Carolina. This is the first economic study to examine the effects of weekend feeding programs on standardized test scores, attendance, or behavioral incidents. I compile a unique data set of program enrollment at each participating…
Advisors/Committee Members: Karen Conway, Robert Mohr, Damian Betebenner.
Subjects/Keywords: BackPack Program; Education Production; Feeding America; Student Growth Percentile Model; Value Added Model; Weekend Feeding Program; Labor economics; Education; Economics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kurtz, M. (2015). Education Production: Teacher Evaluation Models and Weekend Feeding Programs. (Doctoral Dissertation). University of New Hampshire. Retrieved from https://scholars.unh.edu/dissertation/2212
Chicago Manual of Style (16th Edition):
Kurtz, Michael. “Education Production: Teacher Evaluation Models and Weekend Feeding Programs.” 2015. Doctoral Dissertation, University of New Hampshire. Accessed January 15, 2021.
https://scholars.unh.edu/dissertation/2212.
MLA Handbook (7th Edition):
Kurtz, Michael. “Education Production: Teacher Evaluation Models and Weekend Feeding Programs.” 2015. Web. 15 Jan 2021.
Vancouver:
Kurtz M. Education Production: Teacher Evaluation Models and Weekend Feeding Programs. [Internet] [Doctoral dissertation]. University of New Hampshire; 2015. [cited 2021 Jan 15].
Available from: https://scholars.unh.edu/dissertation/2212.
Council of Science Editors:
Kurtz M. Education Production: Teacher Evaluation Models and Weekend Feeding Programs. [Doctoral Dissertation]. University of New Hampshire; 2015. Available from: https://scholars.unh.edu/dissertation/2212
22.
Xu, Xu.
An Investigation on the Interactivity between Suspended-load Backpack and Human Gait.
Degree: PhD, Industrial Engineering, 2008, North Carolina State University
URL: http://www.lib.ncsu.edu/resolver/1840.16/5621
Subjects/Keywords: gait; suspended-load backpack; ground reaction force
…ASTRONAUT. ................... 4
FIGURE 2 ENERGY HARVESTING BACKPACK (ADOPTED FROM KUO, 2005… …51
FIGURE 15 SCHEMATIC OF THE PAYLOAD AND THE BACKPACK FRAME MOVEMENT… …THE BACKPACK FRAME
AS THE FUNCTION OF THE WALKING SPEED AND THE MASS OF THE PAYLOAD (… …59
FIGURE 19 FLOWCHART OF THE LUMPED MODEL OF HUMAN WALKING AND SUSPENDED-LOAD BACKPACK… …60
FIGURE 20 LEFT: FRONT VIEW OF THE SUSPENDED-LOAD BACKPACK. RIGHT: SIDE VIEW OF THE…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Xu, X. (2008). An Investigation on the Interactivity between Suspended-load Backpack and Human Gait. (Doctoral Dissertation). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/5621
Chicago Manual of Style (16th Edition):
Xu, Xu. “An Investigation on the Interactivity between Suspended-load Backpack and Human Gait.” 2008. Doctoral Dissertation, North Carolina State University. Accessed January 15, 2021.
http://www.lib.ncsu.edu/resolver/1840.16/5621.
MLA Handbook (7th Edition):
Xu, Xu. “An Investigation on the Interactivity between Suspended-load Backpack and Human Gait.” 2008. Web. 15 Jan 2021.
Vancouver:
Xu X. An Investigation on the Interactivity between Suspended-load Backpack and Human Gait. [Internet] [Doctoral dissertation]. North Carolina State University; 2008. [cited 2021 Jan 15].
Available from: http://www.lib.ncsu.edu/resolver/1840.16/5621.
Council of Science Editors:
Xu X. An Investigation on the Interactivity between Suspended-load Backpack and Human Gait. [Doctoral Dissertation]. North Carolina State University; 2008. Available from: http://www.lib.ncsu.edu/resolver/1840.16/5621
Lithuanian Academy of Physical Education
23.
Mauricaitė,
Birutė.
Pradinių klasių mokinių laikysenai turintys įtakos
veiksniai ir jų sąsajos.
Degree: Master, Public Health, 2009, Lithuanian Academy of Physical Education
URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090602_140448-48477
;
► Vaikų profilaktinių sveikatos patikrinimų gauti duomenys rodo, jog blogiausi sveikatos rodikliai nustatomi regos ir skeleto–raumenų sistemų. Visuomenės sveikatos priežiūros specialistų teigimu (Kaušylienė R., 2008), beveik…
(more)
▼ Vaikų profilaktinių sveikatos patikrinimų
gauti duomenys rodo, jog blogiausi sveikatos rodikliai nustatomi
regos ir skeleto–raumenų sistemų. Visuomenės sveikatos priežiūros
specialistų teigimu (Kaušylienė R., 2008), beveik ketvirtadaliui
moksleivių medikai nustato netaisyklingą kūno laikyseną,
dešimtadaliui nustatomas stuburo iškrypimas. H. K. Daniel et al.
(2005) pateikia, kad kuprinės svoris turi būti ne didesnis kaip
10,0–15,0 proc. nuo kūno masės. S. N. Forjuoh et al. (2003) pateikė
tyrimo išvadas, kad pradinių klasių mokiniai nešė 8,2 proc.
kuprinės svorį nuo kūno masės ir su amžiumi ši reikšmė išaugo iki
12,0 proc. nuo kūno masės. Tai sąlygoja šio tyrimo aktualumą.
Tyrimo objektas: Pradinių klasių mokinių laikysena ir jos sąsaja su
mokyklinės kuprinės svoriu bei liemens raumenų statine ištverme.
Tyrimo problema: Ar pradinių klasių mokinių laikysenai turi įtakos
mokyklinės kuprinės svoris bei liemens raumenų statinė ištvermė.
Tyrimo tikslas: Išsiaiškinti pradinių klasių mokinių laikysenai
turinčius įtakos veiksnius ir jų sąsajas. Tyrimo uždaviniai: 1.
Nustatyti mokinių kūno masės ir kuprinės svorio santykį. 2.
Įvertinti mokinių laikyseną ir nustatyti nugaros skausmo
pasireiškimą. 3. Įvertinti mokinių liemens raumenų statinę
ištvermę. 4. Nustatyti koreliacinius ryšius tarp tirtų rodiklių.
Hipotezės: 1. Manoma, kad mokinių, kurių liemens raumenų pajėgumas
yra per mažas, laikysena bus prastesnė. 2. Manoma, kad mokinys,
kurio kuprinės svoris yra didesnis negu 10,0 proc. nuo... [toliau
žr. visą tekstą]
The data of children's preventive health
checks show that the most health problems of children are in visual
and muscular–skeletal systems. According to public health experts
(Kaušylienė R., 2008) nearly a quarter of children have poor
posture, tenth – have spinal curvature. HK Daniel et al. (2005)
recommend that the backpack weight must be limited to 10.0–15.0
percent of body weight, because more weight causes significant
changes in physical performance. SN Forjuoh et al. (2003) research
work conclusions show that elementary school children’s backpack
weight averagely 8.2 percent of student’s body weight, bet it
increases significantly with the increasing grade level. This leads
to the relevance of our investigation. The object of investigation:
Primary school children’s posture and its interface with the weight
of school backpacks and trunk muscle static endurance. The study
problem: Does the weight of backpack and trunk muscle static
endurance influence the posture of primary school children. The aim
of the study: To ascertain the primary school children’s posture
and its interface with the weight of school backpacks and trunk
muscle static endurance. Objectives of the study: 1. To estimate
the proportion of children’s body mass and weight of backpacks. 2.
To assess the children’s posture and the back pain prevalence among
children. 3. To assess the children’s trunk muscles static
endurance. 4. To establish the correlation between investigated
variables. Hypothesis: 1.We... [to full
text]
Advisors/Committee Members: Tamošiūnas, Abdonas (Master’s degree committee chair), Kalvėnas, Alvydas (Master’s degree committee member), Puišienė, Elena (Master’s degree committee member), Jankauskienė, Rasa (Master’s degree committee member), Radišauskas, Ričardas (Master’s degree committee member), Vaitauskienė, Vida (Master’s degree session secretary), Bernotienė, Gailutė (Master’s thesis reviewer), Puišienė, Elena (Master’s thesis supervisor).
Subjects/Keywords: Mokiniai; Laikysena; Kuprinės
svoris; Liemens raumenų statinė
ištvermė; Primary school
children; Posture; Backpack
weight; Trunk muscles static
endurance
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mauricaitė,
Birutė. (2009). Pradinių klasių mokinių laikysenai turintys įtakos
veiksniai ir jų sąsajos. (Masters Thesis). Lithuanian Academy of Physical Education. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090602_140448-48477 ;
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
Mauricaitė,
Birutė. “Pradinių klasių mokinių laikysenai turintys įtakos
veiksniai ir jų sąsajos.” 2009. Masters Thesis, Lithuanian Academy of Physical Education. Accessed January 15, 2021.
http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090602_140448-48477 ;.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
Mauricaitė,
Birutė. “Pradinių klasių mokinių laikysenai turintys įtakos
veiksniai ir jų sąsajos.” 2009. Web. 15 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
Mauricaitė,
Birutė. Pradinių klasių mokinių laikysenai turintys įtakos
veiksniai ir jų sąsajos. [Internet] [Masters thesis]. Lithuanian Academy of Physical Education; 2009. [cited 2021 Jan 15].
Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090602_140448-48477 ;.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
Mauricaitė,
Birutė. Pradinių klasių mokinių laikysenai turintys įtakos
veiksniai ir jų sąsajos. [Masters Thesis]. Lithuanian Academy of Physical Education; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090602_140448-48477 ;
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
24.
Jardim, Mónica Maria Rodrigues.
Efeitos da sobrecarga das mochilas escolares nas alterações posturais e de equilíbrio.
Degree: 2013, Repositório Científico do Instituto Politécnico de Lisboa
URL: http://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipl.pt:10400.21/4014
► Mestrado em Fisioterapia
Introdução: As cargas das mochilas escolares produzem mudanças na postura em pé, quando comparadas com a postura sem carga. Há pouca evidência…
(more)
▼ Mestrado em Fisioterapia
Introdução: As cargas das mochilas escolares produzem mudanças na postura em pé, quando comparadas com a postura sem carga. Há pouca evidência quanto ao facto da exposição a carga posterior produzir efeitos prejudiciais no tecido ósseo. Objectivo:
Analisar os efeitos da carga em mochilas escolares sobre a postura e o equilíbrio. Amostra: Por conveniência, constituída por 19 indivíduos saudáveis, de ambos os géneros, de duas turmas do 8º ano, com idades compreendidas entre os 13 e os 15 anos. Metodologia: Estudo quase-experimental e analítico. Os instrumentos de avaliação utilizados foram o FRT e o SAPO, em que o equilíbrio e as alterações posturais foram avaliados: sem carga e com 5%, 10% e 15% do peso corporal na mochila. Procedimentos Estatísticos: Estatística descritiva (medidas de localização central) para a caracterização da amostra e a estatística
inferencial para identificar relações entre as variáveis, com os testes paramétricos e os
Coeficientes de Pearson. Resultados / Discussão: O aumento da percentagem de carga na mochila levou a uma diminuição da performance do FRT e os ângulos crânio-vertebral, crânio-cervical e o dorsal diminuíram à medida que aumentávamos a carga, enquanto os ângulos crânio-cervico-dorsal e o ângulo lombar aumentaram ligeiramente. A partir dos 15% de peso corporal houve maiores alterações a nível do equilíbrio e alterações posturais. Conclusão: Por existirem diferenças aquando da realização dos testes com e sem mochila,
pode-se classificar o transporte de mochilas como um factor de alteração da postura e do
equilíbrio. No entanto, a longo prazo, não podemos classificar estas alterações como
prejudiciais.
ABSTRACT - Introduction: Backpack loads produce changes in the standing posture compared with posture without loads. There is little evidence as to whether exposure to later load produces harmful effects on bone tissue. Objective: Analyze the effects of school backpack loads on posture and balance. Sample: Convenience sample consisting on 19 healthy subjects, of both genders, from two classes of 8th grade, aged between 13 and 15 years. Methodology: Quasi-experimental and analytical study. The assessment instruments used were the FRT and PAS, which evaluated the changes in postural angles and changes of balance in the standing position, with variations of weight: without load, 5%, 10% and 15% of body weight in the children´s backpacks. Statistical procedures: Descriptive (measures of central location) for sample characterization and inferential statistic to identify relations between variables,
with Parametric tests and Pearson´s coefficients. Results / Discussion: The increase of percentage of weight in the school backpack led to a decrease in the performance of the Functional Reach Test and also the cranial-spinal, the cranial-cervical and dorsal angles decreased as we increased the load. The cranial-cervical dorsal and lumbar angles slightly increased as we increased the percentage of load in the backpack. There were more changes in balance and…
Advisors/Committee Members: Coutinho, Isabel.
Subjects/Keywords: Fisioterapia; Medicina de reabilitação; Postura; Equilíbrio; Dor lombar; Mochila; Meio escolar; Physiotherapy; Rehabilitation; Posture; Balance; Back pain; Backpack; School
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jardim, M. M. R. (2013). Efeitos da sobrecarga das mochilas escolares nas alterações posturais e de equilíbrio. (Thesis). Repositório Científico do Instituto Politécnico de Lisboa. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipl.pt:10400.21/4014
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Jardim, Mónica Maria Rodrigues. “Efeitos da sobrecarga das mochilas escolares nas alterações posturais e de equilíbrio.” 2013. Thesis, Repositório Científico do Instituto Politécnico de Lisboa. Accessed January 15, 2021.
http://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipl.pt:10400.21/4014.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Jardim, Mónica Maria Rodrigues. “Efeitos da sobrecarga das mochilas escolares nas alterações posturais e de equilíbrio.” 2013. Web. 15 Jan 2021.
Vancouver:
Jardim MMR. Efeitos da sobrecarga das mochilas escolares nas alterações posturais e de equilíbrio. [Internet] [Thesis]. Repositório Científico do Instituto Politécnico de Lisboa; 2013. [cited 2021 Jan 15].
Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipl.pt:10400.21/4014.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Jardim MMR. Efeitos da sobrecarga das mochilas escolares nas alterações posturais e de equilíbrio. [Thesis]. Repositório Científico do Instituto Politécnico de Lisboa; 2013. Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipl.pt:10400.21/4014
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
25.
Doyle, Sean.
The Effect of a Weighted Pack on the Gait Patterns of Transtibial Amputees
.
Degree: 2012, University of Ottawa
URL: http://hdl.handle.net/10393/23363
► With the popularity of outdoor activities like hiking, the demands of certain types of employment, or being a student, an individual’s ability to carry a…
(more)
▼ With the popularity of outdoor activities like hiking, the demands of certain types of employment, or being a student, an individual’s ability to carry a load is an important mobility consideration. By understanding the changes to an individual’s gait when supporting a backpack load, an individual’s ability to carry heavy loads for prolonged periods could be improved. Most biomechanical studies have examined the changes in able-bodied gait when carrying a load. However, research is lacking on the effect of backpack loads on amputee gait patterns. This project examined the effects of a backpack load on the gait patterns of unilateral transtibial amputees. Ten participants performed walking trials on four surfaces (level ground, uneven ground, walking up an incline, and walking down an incline), without a pack and with a pack. A total of 40 trials were collected per subject, with 10 trials collected on each surface. Three-dimensional motion data were collected with an eight-camera Vicon Motion Analysis system to describe limb motion as well as compare kinematic outcomes between tasks and conditions. Force platform data were collected during the level ground trials and used to calculate kinetic measures for both limbs. With the addition of the pack changes were seen on each surface, with different changes occurring to each limb. The ramp up surface created the most changes when comparing the two conditions. The only change seen across all four surfaces was a decrease in ankle dorsiflexion before push-off on the prosthetic limb. The two next most common changes were increases in knee and hip flexion during weight-acceptance.
Subjects/Keywords: Gait;
Load-bearing;
Amputee;
Backpack;
Biomechanics
…understanding of how an individual’s gait is altered when supporting
a backpack load is important for… …section, many studies have been completed on
gait adaptations due to backpack loads on able… …practical and clinical significance.
Quantitative biomechanical outcomes from the backpack load… …of a weighted backpack, on unilateral transtibial amputees across level
ground, uneven… …backpack load will not produce significant changes in temporal-spatial
parameters of an amputee’s…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Doyle, S. (2012). The Effect of a Weighted Pack on the Gait Patterns of Transtibial Amputees
. (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/23363
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Doyle, Sean. “The Effect of a Weighted Pack on the Gait Patterns of Transtibial Amputees
.” 2012. Thesis, University of Ottawa. Accessed January 15, 2021.
http://hdl.handle.net/10393/23363.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Doyle, Sean. “The Effect of a Weighted Pack on the Gait Patterns of Transtibial Amputees
.” 2012. Web. 15 Jan 2021.
Vancouver:
Doyle S. The Effect of a Weighted Pack on the Gait Patterns of Transtibial Amputees
. [Internet] [Thesis]. University of Ottawa; 2012. [cited 2021 Jan 15].
Available from: http://hdl.handle.net/10393/23363.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Doyle S. The Effect of a Weighted Pack on the Gait Patterns of Transtibial Amputees
. [Thesis]. University of Ottawa; 2012. Available from: http://hdl.handle.net/10393/23363
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
26.
Jonsson, Marcus.
Design of Multifunctional and Sustainable Backpacks : Combining Skiing, Snowboarding, and Urban Usage.
Degree: Technology and Social Sciences, 2018, Luleå University of Technology
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69707
► Today, backpacks and duffel bags are often designed with a focus on a specific area of use, which makes it difficult to use them…
(more)
▼ Today, backpacks and duffel bags are often designed with a focus on a specific area of use, which makes it difficult to use them on other occasions. A clear example where the differences are noticeable is between functional mountaineer bags and urban bags. It is not uncommon for people staying in these environments to have far beyond two bags in their possession. Overconsumption is harmful to the environment, especially when it is from an industry that is pursued with poor working conditions and dangerous emissions in nature. Therefore, multifunctionality and sustainable design have been of high priority when the products in this project were developed. In this thesis, two models of bags have been developed through a human-centered design process. A large number of user interviews and expert interviews, as well as a focus group, laid the foundation for the requirements and needs of the bags. Spektrum’s company values, as well as the identity of their current products, were interpreted to create brand recognition in the new products. Idea generation was performed through various creative sessions, prototyping, and through a workshop. Evaluation and concept selection was performed by representatives from the target group in the form of personas, as well as by Spektrum. Finally, detailed technical drawings of the concepts were created in Adobe Illustrator. The first model is a backpack designed to work just as well on the mountain as in the city. The other model is a duffel bag that can be carried both on the back and in the hand. It is also designed to perform well in both mountain and urban environments. Both bags are made of polyester from recycled PET bottles and the material is controlled and approved by the highly rated environmental certification bluesign®. The metal parts of the bags are made of recycled aluminum. Both models are adjustable to fit all users within the 5th to 95th percentile. The thesis resulted in the ordering of two alpha prototypes of each model, factory-made by my technical drawings. According to Spektrum, the designs have created great interest among retailers and company shareholders. Both models will, therefore, be put into production and released to the market within two years.
Subjects/Keywords: Backpack; Duffel Bag; Multifunctional; Brand Transformation; Sustainable Design; Textile Design; Industrial Design Engineering; Engineering and Technology; Teknik och teknologier
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jonsson, M. (2018). Design of Multifunctional and Sustainable Backpacks : Combining Skiing, Snowboarding, and Urban Usage. (Thesis). Luleå University of Technology. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69707
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Jonsson, Marcus. “Design of Multifunctional and Sustainable Backpacks : Combining Skiing, Snowboarding, and Urban Usage.” 2018. Thesis, Luleå University of Technology. Accessed January 15, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69707.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Jonsson, Marcus. “Design of Multifunctional and Sustainable Backpacks : Combining Skiing, Snowboarding, and Urban Usage.” 2018. Web. 15 Jan 2021.
Vancouver:
Jonsson M. Design of Multifunctional and Sustainable Backpacks : Combining Skiing, Snowboarding, and Urban Usage. [Internet] [Thesis]. Luleå University of Technology; 2018. [cited 2021 Jan 15].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69707.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Jonsson M. Design of Multifunctional and Sustainable Backpacks : Combining Skiing, Snowboarding, and Urban Usage. [Thesis]. Luleå University of Technology; 2018. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69707
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Queens University
27.
Hapuarachchi, Malinda.
Biomechanical Modelling and Objective Evaluation of a Dynamic Load Carriage Device
.
Degree: Kinesiology and Health Studies, Queens University
URL: http://hdl.handle.net/1974/23614
► The overall aim of this research project was to develop a methodology for the development and evaluation of an energy storage and return (ESAR) system,…
(more)
▼ The overall aim of this research project was to develop a methodology for the development and evaluation of an energy storage and return (ESAR) system, specifically dynamic rods (DR), for insertion into a typical backpack. The criteria for a successful ESAR were to reduce the relative pack vertical displacement at a delayed phase of the gait cycle thus reducing the force demands on the body. The first objective of this research project was to investigate the effectiveness of the DR across different loads and dynamic conditions. The approach involved the use of two types of load carriage evaluation tools: (1) a computational dynamic biomechanical model (DBM) and (2) a physical Load Carriage Simulator (LCS). The secondary objective was to examine the efficacy of this methodology and determine if the DR design concept met the ESAR criteria in both the DBM and LCS. The results demonstrated that, even though the DR had a marginal effect on the relative z-displacement of the pack and z-forces experienced at the waist and hips for the DBM, similar results were not observed in the LCS trials. There was also no phase shift of the backpack observed in either evaluation tool. This, along with the displacement and force data, suggested that the current DR design did not meet the criteria for an ESAR load carriage device. Finally, the comparison of key variables between the DBM and LCS demonstrated that the LCS could not be used to validate the DBM. Despite the limitations of this study, it has provided a starting point toward developing a standardized protocol for the design and development of novel load carriage systems. A supplemental study demonstrated that increased tension of the DR straps resulted in a reduction of shoulder strap forces because the DR acted as a bridge in the mechanical system, transferring some of the forces from the shoulders to the hip belt (pelvis). Therefore, this DR concept should be considered in the design of LC devices as the reduction of shoulder forces during load carriage is an area of concern.
Subjects/Keywords: Load carriage
;
Energy storage and return
;
Backpack
;
Computer modelling
;
Load carriage simulator
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hapuarachchi, M. (n.d.). Biomechanical Modelling and Objective Evaluation of a Dynamic Load Carriage Device
. (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/23614
Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hapuarachchi, Malinda. “Biomechanical Modelling and Objective Evaluation of a Dynamic Load Carriage Device
.” Thesis, Queens University. Accessed January 15, 2021.
http://hdl.handle.net/1974/23614.
Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hapuarachchi, Malinda. “Biomechanical Modelling and Objective Evaluation of a Dynamic Load Carriage Device
.” Web. 15 Jan 2021.
Note: this citation may be lacking information needed for this citation format:
No year of publication.
Vancouver:
Hapuarachchi M. Biomechanical Modelling and Objective Evaluation of a Dynamic Load Carriage Device
. [Internet] [Thesis]. Queens University; [cited 2021 Jan 15].
Available from: http://hdl.handle.net/1974/23614.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.
Council of Science Editors:
Hapuarachchi M. Biomechanical Modelling and Objective Evaluation of a Dynamic Load Carriage Device
. [Thesis]. Queens University; Available from: http://hdl.handle.net/1974/23614
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.
28.
Oliveira, Elsa.
Problemática associada à utilização de diferentes tipos de mochila para transporte de material escolar.
Degree: 2013, Instituto Politécnico do Porto
URL: https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/4759
► O transporte de cargas é uma tarefa comum para crianças, adolescentes e adultos, pela necessidade de transferência diária de objetos pessoais, livros e artigos de…
(more)
▼ O transporte de cargas é uma tarefa comum para crianças, adolescentes e adultos, pela
necessidade de transferência diária de objetos pessoais, livros e artigos de papelaria para os
locais de trabalho ou escolas. Diversos autores apontam que o peso carregado durante
transporte de material é o principal responsável pelo aparecimento de dor lombar. Deste
modo é importante o constante estudo da temática para a definição recomendações e
limites. O presente estudo teve como principais objetivos a caraterização da problemática
associada à utilização de mochilas e a determinação do Peso Máximo Aceitável (PMA) e
do Índice de Esforço Percebido (IEP) para a tarefa de transporte de mochilas, através da
abordagem psicofísica. O estudo foi desenvolvido com estudantes do 7º, 8º e 9º ano de
escolaridade e, foi dividido em duas fases. Na 1ª fase foram aplicados questionários para a
análise da problemática associada à utilização de diferentes tipos de mochilas escolares.
Nesta fase, foram incluídos aspetos associados à identificação do tipo de mochila mais
utilizada, as rotinas e hábitos dos estudantes e as características da mochila utilizada.
Verificou-se que os estudantes utilizam, maioritariamente, a mochila de duas alças para
transporte de material escolar. Posteriormente foram efetuadas medições de peso da
mochila, altura e peso aos 131 estudantes que constituíram a amostra da 1º fase. O
principal objetivo deste ponto foi identificar o tipo de mochila habitualmente utilizada
pelos estudantes assim como, o peso transportado nas mochilas. Na 2ª fase foi efetuado um
estudo para a determinação do PMA e do IEP, através da abordagem psicofísica, para a
tarefa de transporte de mochila, considerando-se uma amostra constituída por 10
estudantes. Para este estudo, apenas foi considerada a mochila mais frequentemente
utilizada, identificada na 1º fase. A tarefa consistiu no transporte da mochila nos dois
ombros e com as alças devidamente ajustadas ao corpo, num percurso pré-definido, de
acordo com o procedimento experimental. Os resultados indicaram que nem todos os
estudantes transportam mochilas com pesos dentro das recomendações da Organização
Mundial de Saúde. O PMA determinado pelos estudantes foi de 6.8 kg para a mochila de
duas alças e a região dos ombros foi identificada durante todo o estudo como sendo a que
apresentava maior intensidade de dor durante o transporte da mochila.
Loadings are common tasks for children, teenagers and adults once daily, they have to
carry bags, personal objects, and books for workplaces or schools. Several authors point
out that the weight loads during material loadings is the main cause for the onset of low
back pain. Thus it is important to study this subject in order to define recommendations
and establish limits for these tasks. The main objectives of the present study was the
characterization of the problems associated with the use of backpacks and the
determination of the Maximum Acceptable Weight ( MAW ) and the Index of Perceived
Exertion ( IPE ) for the task of carrying backpacks. A…
Advisors/Committee Members: Loureiro, Isabel, Silva, Manuela Vieira.
Subjects/Keywords: Transporte de mochila; Psicofísico; Peso máximo aceitável; Índice de esforço percebido; Dor lombar; Backpack transport; Psychophysical; Maximum acceptable weight; Perceived effort index; Back pain
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Oliveira, E. (2013). Problemática associada à utilização de diferentes tipos de mochila para transporte de material escolar. (Thesis). Instituto Politécnico do Porto. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/4759
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Oliveira, Elsa. “Problemática associada à utilização de diferentes tipos de mochila para transporte de material escolar.” 2013. Thesis, Instituto Politécnico do Porto. Accessed January 15, 2021.
https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/4759.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Oliveira, Elsa. “Problemática associada à utilização de diferentes tipos de mochila para transporte de material escolar.” 2013. Web. 15 Jan 2021.
Vancouver:
Oliveira E. Problemática associada à utilização de diferentes tipos de mochila para transporte de material escolar. [Internet] [Thesis]. Instituto Politécnico do Porto; 2013. [cited 2021 Jan 15].
Available from: https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/4759.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Oliveira E. Problemática associada à utilização de diferentes tipos de mochila para transporte de material escolar. [Thesis]. Instituto Politécnico do Porto; 2013. Available from: https://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/4759
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
29.
Lehmann, Frederick Denis.
Weight load carry : a review of the efficiency and effectiveness of the army backpack.
Degree: 2000, Western Sydney University
URL: http://handle.uws.edu.au:8081/1959.7/663
► Military load carrying has occupied the attention of military developers, researchers and commanders over centuries. The Army backpack remains the means of carriage for ammunition…
(more)
▼ Military load carrying has occupied the attention of military developers, researchers and commanders over centuries. The Army
backpack remains the means of carriage for ammunition and rations for the soldier in the field. The traditional rationale for its use has been that the infantry soldier must be able to sustain himself in combat and live independently for days at a time without resupply. At the Royal Military College, Duntroon (RMC), the mission is to produce men and women who are capable and effective officers and soldiers. The weight of the pack with the items required at RMC is often in excess of 40 kg. In evaluating the effectiveness of current practice, this thesis takes an anthropometric perspective in exploring the historical, physiological and social context of current loads carried by Australian soldiers, It does not, however, evaluate the content of the load itself. Research methods include: a/. Systematic examination of past research findings on the social and physiological aspects of military load carrying since the Roman Centurions. b/. Biophysical tesing of nine soldiers, using a battery of physiological tests to determine heart rates and energy expenditure at various loads. c/. A survey of 100 soldiers from the Royal Military College, Duntroon and in-depth interviews with a sample of four experienced soldiers to obtain the views of the load carriers. The research concludes that the optimum approach to load carrying, and so to the design of the Army
backpack, is that it be task-and soldier-specific. This runs directly counter to the longstanding Army traditions of preparing all soldiers for every possible contingency in battle and regarding all soldiers as equivalent units. The study findings offer some specific directions in which the design of the army
backpack can be improved.
Advisors/Committee Members: University of Western Sydney (Host institution), College of Science, Technology and Environment (Host institution), School of Environment and Agriculture (Host institution).
Subjects/Keywords: Master of Science (Hons); army backpack; backpacks; lifting and carrying; Australian army equipment
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lehmann, F. D. (2000). Weight load carry : a review of the efficiency and effectiveness of the army backpack. (Thesis). Western Sydney University. Retrieved from http://handle.uws.edu.au:8081/1959.7/663
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lehmann, Frederick Denis. “Weight load carry : a review of the efficiency and effectiveness of the army backpack.” 2000. Thesis, Western Sydney University. Accessed January 15, 2021.
http://handle.uws.edu.au:8081/1959.7/663.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lehmann, Frederick Denis. “Weight load carry : a review of the efficiency and effectiveness of the army backpack.” 2000. Web. 15 Jan 2021.
Vancouver:
Lehmann FD. Weight load carry : a review of the efficiency and effectiveness of the army backpack. [Internet] [Thesis]. Western Sydney University; 2000. [cited 2021 Jan 15].
Available from: http://handle.uws.edu.au:8081/1959.7/663.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lehmann FD. Weight load carry : a review of the efficiency and effectiveness of the army backpack. [Thesis]. Western Sydney University; 2000. Available from: http://handle.uws.edu.au:8081/1959.7/663
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
30.
Österberg, Viktor.
Transportation demands : of chilled and frozen groceries.
Degree: Technology and Social Sciences, 2019, Luleå University of Technology
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72940
► Today focus on the environemnt is bigger than ever before. UN writes in their climate agenda that they by 2030want to cut the food…
(more)
▼ Today focus on the environemnt is bigger than ever before. UN writes in their climate agenda that they by 2030want to cut the food waste per capita in half. There are strict regulations today regarding how food needs to betransported and stored, but as soon as the consument takes, for example, milk from the frigde at a store there areonly a few guidelines about how the product should be stored. If a chilled or frozen product is not kept insidethe range of the given temperature, a microbilogical growth will begin. This leads to that the food goes bad or,in worst case, that the consumer gets poisoned. There is a change happening today in how the consumers shoptheir food and more focus is layed upon the customer to handle their grocery shopping by themselves. This project focuses on developing a solution that will help the consumer to keep their food at the right temperatureduring an extended period of time. The project is carried out in Stockholm during 20 weeks in collaborationwith IKEA of Sweden in Älmhult. The target group in this project is IKEA’s broad customer group.With help from a Human Centered Design process this project goes through the three phases; inspiration,ideation and implementation. The project has been formed with interaction through workshops with differentexternal actors like users and focus groups. The ideation resulted in four simpler concepts that verged in to twothrough external decision making with supervisors from IKEA of Sweden. During the project, the prototypeshave been used together with users to evaluate the usability of the concepts. The result consists of two concepts; Behålla and Blåsa, that are aimed to meet two different users that hasbeen identified through surveys and interviews. Behålla is a smaller product that is target towards the user thatbrings food with them to work or school, also to those who buys less groceries at the store. Blåsa is, in contrastto Behålla, a bigger product that is targeted towards the customers that buys a bigger set of chilled and frozengroceries. Additionally four color variations has been created to offer IKEA alternative executions. These conceptsare visualized with renderings through Adobe Illustratior. With these concepts IKEA can enlarge theirsustainability profile and offer their customers two new products to keep their chilled and frozen foods cold.
Fokus på miljön är idag större än någonsin. FN skriver i sin klimat agenda att de till 2030 siktar på att halveramatsvinnet per capita. Idag finns det hårda regleringar om hur livsmedel ska transporte-ras och förvaras, menfrån den sekund konsumenten tar ut exempelvis ett mjölkpaket ur kyldisken finns det bara få riktlinjer om hurprodukten bör förvaras. Om en kyld eller fryst produkt inte hålls inom det angivna temperaturspannet skerdet en ökning i den mikrobiologiska tillväxten i livsmed-let. Detta leder i sin tur att matvaran blir dålig eller, ivärsta fall, att konsumenten blir förgiftad. Idag sker det också en förändring i hur konsumenterna handlar…
Subjects/Keywords: Backpack; Bag; Food Transportation; Groceries; Industrial Design Engineer; Sustainable Design; Hållbar Design; Livsmedel; Matvarutransport; Teknisk Design; Ryggsäck; Väska; Engineering and Technology; Teknik och teknologier
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Österberg, V. (2019). Transportation demands : of chilled and frozen groceries. (Thesis). Luleå University of Technology. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72940
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Österberg, Viktor. “Transportation demands : of chilled and frozen groceries.” 2019. Thesis, Luleå University of Technology. Accessed January 15, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72940.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Österberg, Viktor. “Transportation demands : of chilled and frozen groceries.” 2019. Web. 15 Jan 2021.
Vancouver:
Österberg V. Transportation demands : of chilled and frozen groceries. [Internet] [Thesis]. Luleå University of Technology; 2019. [cited 2021 Jan 15].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72940.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Österberg V. Transportation demands : of chilled and frozen groceries. [Thesis]. Luleå University of Technology; 2019. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72940
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
◁ [1] [2] ▶
. 
Open Access Theses and Dissertations
