During the 14th Five-Year Plan period,a government-led transformation,incorporating resident’s participation,has breathed new life into the capital’s aging neighborhoods.
As an important sustainable energy source,Li-ion batteries have been widely used in mobile phones,electric vehicles,large-scale energy storage and aerospace.However,due to the inevitable safety risks of traditional li...As an important sustainable energy source,Li-ion batteries have been widely used in mobile phones,electric vehicles,large-scale energy storage and aerospace.However,due to the inevitable safety risks of traditional liquid Li-ion batteries,the use of all-solid-state batteries to replace organic liquid electrolytes has become one of the most effective ways to solve safety problem.Solid-state electrolyte(SSE)is the core part of allsolid-state Li-ion battery,and ideal SSE has the characteristics of high ionic conductivity,wide enough electrochemical stability window,suitable mechanical strength and excellent chemical stability,the first among which is particularly an essential prerequisite.While,so far only a few SSEs exhibit the Li ionic conductivities higher than 10^(-4) S/cm at room temperature.展开更多
AIM:To compare the visual and optical outcomes following femtosecond laser in situ keratomileusis(FS-LASIK)using an aberration neutral profile with asymmetric offset(AO)and pupil center(PC)treatments.METHODS:In this r...AIM:To compare the visual and optical outcomes following femtosecond laser in situ keratomileusis(FS-LASIK)using an aberration neutral profile with asymmetric offset(AO)and pupil center(PC)treatments.METHODS:In this randomized double-blind clinical trial study,48(24 cases)and 38 eyes(19 cases)underwent myopic astigmatism and hyperopic astigmatism LASIK.One eye of each individual was randomly assigned to AO centration and the fellow eye underwent the PC-centered method.The clinical outcomes including uncorrected visual acuity(UCVA),best-corrected visual acuity(BCVA),safety and efficacy indexes,subjective spherical equivalent(SE)and corneal high-order aberrations(HOAs)were measured at baseline and 6mo postoperatively.RESULTS:In the myopic group,the mean preoperative SE and astigmatism were-4.12±0.87(-2.88 to-6.00)diopter(D)and-0.88±0.79(0 to-2.75)D,respectively.In the hyperopic group,the mean preoperative SE and astigmatism were 0.93±0.59(-0.25 to 2.25)D and-0.73±1.00(0 to-4.25)D,respectively.At 6mo postoperatively,the safety and efficacy indexes were similar for centration in myopic and hyperopic LASIK groups.In the myopic group,significant changes were found in horizontal trefoil(P=0.041)and oblique trefoil(P=0.031)in favor of AO centration treatment.CONCLUSION:Femtosecond-LASIK is a safe and efficacious procedure for treatment of myopic and hyperopic astigmatism.AO-centered and PC-centered approaches provide similar visual and refractive outcomes.Myopic astigmatism LASIK with AO centration leads to slightly better corneal aberration outcomes.展开更多
A crystal is a highly organized arrangement of atoms in a solid, wherein a unit cell is periodically repeated to form the crystal pattern. A unit cell is composed of atoms that are connected to some of their first nei...A crystal is a highly organized arrangement of atoms in a solid, wherein a unit cell is periodically repeated to form the crystal pattern. A unit cell is composed of atoms that are connected to some of their first neighbors by chemical bonds. A recent rule, entitled the even-odd rule, introduced a new way to calculate the number of covalent bonds around an atom. It states that around an uncharged atom, the number of bonds and the number of electrons have the same parity. In the case of a charged atom on the contrary, both numbers have different parity. The aim of the present paper is to challenge the even-odd rule on chemical bonds in well-known crystal structures. According to the rule, atoms are supposed to be bonded exclusively through single-covalent bonds. A distinctive criterion, only applicable to crystals, states that atoms cannot build more than 8 chemical bonds, as opposed to the classical model, where each atom in a crystal is connected to every first neighbor without limitation. Electrical charges can be assigned to specific atoms in order to compensate for extra or missing bonds. More specifically the article considers di-atomic body-centered-cubic, tetra-atomic and dodeca-atomic single-face-centered-cubic crystals. In body-centered crystals, atoms are interconnected by 8 covalent bonds. In face-centered crystal, the unit cell contains 4 or 12 atoms. For di-element crystals, the total number of bonds for both elements is found to be identical. The neutrality of the unit cell is obtained with an opposite charge on the nearest or second-nearest neighbor. To conclude, the even-odd rule is applicable to a wide number of compounds in known cubic structures and the number of chemical bonds per atom is not related to the valence of the elements in the periodic table.展开更多
The two-dimensional(2D) pseudo-steady isothermal flow, which is isentropic and irrotational, around a convex corner is studied. The self-similar solutions for the supersonic flow around the convex corner are construct...The two-dimensional(2D) pseudo-steady isothermal flow, which is isentropic and irrotational, around a convex corner is studied. The self-similar solutions for the supersonic flow around the convex corner are constructed, where the properties of the centered simple wave are used for the 2D isentropic irrotational pseudo-steady Euler equations. The geometric procedures of the center simple waves are given. It is proven that the supersonic flow turns the convex corner by an incomplete centered expansion wave or an incomplete centered compression wave, depending on the conditions of the downstream state.展开更多
Micron-scale face-centered cubic titanium phase（named as δ phase） were noticed in the re-melted zone of laser surface re-melted commercially pure titanium plate.The morphology,sub-structure,orientation and distribu...Micron-scale face-centered cubic titanium phase（named as δ phase） were noticed in the re-melted zone of laser surface re-melted commercially pure titanium plate.The morphology,sub-structure,orientation and distribution of δ phase were investigated by scanning electron microscopy,electron back-scattered diffraction and transmission electron microscopy.Three kind formation processes of δ phase were put forward based on the investigation.The first one is α＇→δ transformation which takes place in single α＇grains and leads to the orientation relationship {001}δ//{0001}α＇〈 110 〉 δ//〈 112^-0 〉α＇.The second one is β→α＇＋ δ transformation which takes place at α＇/α＇interfaces and leads to the orientation relationship{001}δ//{11^-0}β〈110〉 δ//〈111〉β.The third one is another kind of β→α＇＋ δ transformation that takes place at α＇/α＇interfaces and leads to the orientation relationship{11^-1}δ//{11^-0}β〈 110 〉 δ//〈 111 〈 β.It is believed that the transformations of δ phase are stress assistant ones and in the present investigation,the phase transformation stress of β→α＇transformation acts as the assistant driving force for the formation of δ phase.展开更多
Family Centered care is a model that is practiced and encouraged in child health care. It considers family as partners and collaborators in care of children. It aims at involving family in all aspects of child care. F...Family Centered care is a model that is practiced and encouraged in child health care. It considers family as partners and collaborators in care of children. It aims at involving family in all aspects of child care. Family centered care also mentions involvement of child. However, emphasis is given more on family than child and does not take into account the older child’s capacity for independent decision making and right to privacy. As such, child’s needs are missed out. With child centered care, children are involved and supported at all levels of care based on their age and developmental stage. This paper aims to stress the importance of involving children within family centered care. Involving children in their care, makes them feel less threatened by the health care professional and their self esteem is promoted. Currently, no studies have been identified in Malawi that demonstrates full partnership between the family, child and the nurse. Furthermore, Family Centered Care and Child Centered Care as models are not fully practiced. It is therefore important to practice both family and child centered care in child health care if the needs of both family and children are to be addressed concurrently.展开更多
1.Background Engel's biopsychosocial model,which was constructed in 1977,was considered a momentous breakthrough from the traditional biomedical model of medicine that regards the person as a disease-carrier requi...1.Background Engel's biopsychosocial model,which was constructed in 1977,was considered a momentous breakthrough from the traditional biomedical model of medicine that regards the person as a disease-carrier requiring diagnosis and treatment[1]towards recognition of the whole person and furnish customized care.This model argues that health should not be considered solely on biological factors but on a combination of biological,psychological,and social factors[2].This idea of considering individuals as a whole and respecting their rights to self-determination has led to a shift in the care model from disease-centered care to patient-centered or person-centered care.The latter two care models are both abbreviated as PCC.Ensuring that people are involved in and central to the healthcare process is now recognized as a key component in developing high-quality care.Studies have revealed that both concepts of care can help improve people's health condition and lower health service burdens.Thus,countries and healthcare organizations have been paying close attention to the patients'concerns.The National Health Service in England has made person-centered care as one of its seven core principles[3].展开更多
This paper shows that the centered fractional derivatives introduced by Manuel Duarte Ortigueira in 2006 are useful in the description of optical solitons. It is shown that we can construct a fractional extension of t...This paper shows that the centered fractional derivatives introduced by Manuel Duarte Ortigueira in 2006 are useful in the description of optical solitons. It is shown that we can construct a fractional extension of the nonlinear Schrödinger (NLS) equation which incorporates Ortigueira’s derivatives and has soliton solutions. It is also shown that this fractional NLS equation has a Lagrangian density and can be derived from a variational principle. Finally, a fractional extension of Noether’s theorem is formulated to determine the conserved quantities associated to the invariances of the action integral under infinitesimal transformations.展开更多
Talent cultivation is the primary task of universities.Local general undergraduate colleges and universities should adhere to the basic guidelines of systematization,practicality and integration,continuously explore t...Talent cultivation is the primary task of universities.Local general undergraduate colleges and universities should adhere to the basic guidelines of systematization,practicality and integration,continuously explore the concept of"studentcentered"talent cultivation,and build a threedimensional practical teaching system from three aspects:strengthening the planning and design of the three-dimensional practical teaching system;building an internal and external practical teaching platform;and improving the evaluation and guarantee system of practical teaching quality.The system of practical teaching quality evaluation and guarantee is improved.In order to improve the cultivation ability of applied talents in all aspects.展开更多
A dislocation interaction model has been proposed for cyclic deformation of fcc crystals.Ac- cording to this model,cyclic stress-strain responses and saturation dislocation structures of a crystal are associated with ...A dislocation interaction model has been proposed for cyclic deformation of fcc crystals.Ac- cording to this model,cyclic stress-strain responses and saturation dislocation structures of a crystal are associated with the modes and intensities of dislocation interactions between slip systems active in the crystal; and,hence,may be predicted by the location of its tensile axis in the crystallographic triangle.This model has successfully explained the different behaviours of double-slip crystals and multi-slip behaviours of some crystals with orientations usually con- sidered as single-slip ones.展开更多
The presence of oxygen in the subsurface in monomer-dimer reactions(CO-O_(2)and NO-CO)is observed experimentally.The effect of subsurface oxygen on a CO-O_(2)catalytic reaction on a face-centered cubic(FCC)lattice is ...The presence of oxygen in the subsurface in monomer-dimer reactions(CO-O_(2)and NO-CO)is observed experimentally.The effect of subsurface oxygen on a CO-O_(2)catalytic reaction on a face-centered cubic(FCC)lattice is studied using Monte Carlo simulation.The effect of adding subsurface neighbours on the phase diagram is also extensively explored.It is observed that the subsurface oxygen totally eliminates the typical second order phase transition.It is also shown that the introduction of the diffusion of O atoms and the subsurface of the FCC lattice shifts the single transition point towards the stoichiometric ratio.展开更多
We analyze the local behavior of the Hausdorff centered measure for self- similar sets. If E is a self-similar set satisfying the open set condition, thenC^s（E∩B（x,r））≤（2r）^sfor all x ∈ E and r〉 0, where Cs ...We analyze the local behavior of the Hausdorff centered measure for self- similar sets. If E is a self-similar set satisfying the open set condition, thenC^s（E∩B（x,r））≤（2r）^sfor all x ∈ E and r〉 0, where Cs denotes the s-dimensional Hausdorff centered measure. The above inequality is used to obtain the upper bound of the Hausdorff centered measure. As the applications of above inequality, We obtained the upper bound of the Hausdorff centered measure for some self-similar sets with Hausdorff dimension equal to 1, and prove that the upper bound reach the exact Hausdorff centered measure.展开更多
In this paper,we investigate methodologies to improve direct-touch interaction on invisible and intangible spatial input.We firstly discuss about the motive of looking for a new input method for whole body interaction...In this paper,we investigate methodologies to improve direct-touch interaction on invisible and intangible spatial input.We firstly discuss about the motive of looking for a new input method for whole body interaction and how it can be meaningful.We also describe the role that can play spatial interaction to improve the freedom of interaction for a user.We propose a method of spatial centered interaction using invisible and intangible spatial inputs.However,given their lack of tactile feedback and visual representation,direct touch interaction on such input can be confused.In order to make a step toward understanding causes and solutions for such phenomena,we made 2 user experiments.In the first one,we test 5 setups of helper that provide information of the location of the input by constraining the dimension it is located at.The results show that using marker on the ground and a relationship with the height of the user’s body improve significantly the locative task.In the second experiment,we create a dancing game using invisible and intangible spatial inputs and we stress the results obtained in the first experiment within this cognitively demanding context.Results show that the same setup of helper is still providing very good results in that context.展开更多
Aim: This research aims to evaluate patient-centeredness and communication skills from the patients’ point of view and that of the physicians’ point of view and compares the two outcomes. Methods: This was a cross-s...Aim: This research aims to evaluate patient-centeredness and communication skills from the patients’ point of view and that of the physicians’ point of view and compares the two outcomes. Methods: This was a cross-sectional study with a convenient sample of 418 patients and 94 residents. Instrument of the study was a structured questionnaire that aimed to evaluate patient centeredness and communication skills of the residents. Results: Residents gave themselves a significantly higher score than the score given to them by patients in most studied aspects such as the extent to which the doctor discussed the patient’s problem, the extent to which the doctor explained the problem, the doctor introduced himself, the doctor greeted the patient properly and others. The only aspect for which patients gave residents higher score than that residents gave themselves was the extent to which the doctor asked the patient about what is expected to be done (ECG, CT scan, giving antibiotics, …). Conclusion: A transformation from doctor centered approach to patient centered approach is needed.展开更多
This thesis paper is a brief summary of user centered design, (particularly in the situation of under the battlefield), which incorporates the related information after reviewing many other papers. A display screen us...This thesis paper is a brief summary of user centered design, (particularly in the situation of under the battlefield), which incorporates the related information after reviewing many other papers. A display screen user requires an ability to provide proper information while considering a variety of information in a short period. While operating the display screen, the user is heavily pressed for time as the missions are allocated through many different steps of orders. In addition, since a failure would cause fatal damage or cause further defeat, this increases the pressure of time. The right environment for operating a display screen is most useful when the user is in the most vulnerable time period or long-term continuous operation of the display screen. In that kind of sterile environment, the operating display screen is there to help the user’s decisions for the matter at hand, in this it should follow the user centered design and improve the user’s handiness and use. Furthermore, the information should be provided in accordance with the user's informational and perceptional process, and the capacity of the information process should be improved with the movement through each process and step. This thesis paper can be used as a reference material when designing the display screen in order to apply a user’s experiences.展开更多
Background: Multiple studies in the primary care field have indicated the benefits of using a patient centered approach in communication with the patient;such interviewing methods have been shown to improve patient sa...Background: Multiple studies in the primary care field have indicated the benefits of using a patient centered approach in communication with the patient;such interviewing methods have been shown to improve patient satisfaction and adherence. There is a scarcity of anesthetic literature regarding communication skills in the perioperative period. The goal is to analyze to what extent empathic patient-centered communication methods are being used by anesthesia providers. Communication scores will be compared among providers, as well as to providers across several different subspecialties. Methods: This study is an observational descriptive study at a large tertiary care center, University Hospital in Newark, NJ. The observer observes and grades patient interviews, scoring against established criteria using an adapted version of the Kalamazoo grading tool. The researcher observes and grades the preoperative interview using the adapted Kalamazoo scale. At the end of the observed encounter, the anesthesia providers are asked to fill out a brief form detailing their demographic history, details regarding the providers’ length and type of clinical education and training, undergraduate education, previous communication training, number of years of practice, primary language, gender, and age will be obtained. Results: Anesthesia providers included in the study were physician anesthesiologists, residents, and nurse anesthetists. The average Kalamazoo score was 28.7 amongst all providers. There was no significant effect of provider level on the score at the p Conclusions: The data revealed anesthesia providers provide patient-centered encounters with a mean score of 28.7, which is higher than the average for providers from multiple different specialties observed in Joyce, et al. study (mean score of 25.25). The subcategories “Understanding patient’s perspective” and “reaches agreement” scored 3.86, and 3.83, respectively. This may indicate that anesthesia providers can improve on allowing the patient to communicate their understanding of anesthesia, as well as collecting information from the patient that can affect their anesthesia (i.e., severe nausea following previous anesthesia).展开更多
In May 2021,drones began hovering over MacRitchie Reservoir,which is unusual in Singapore,where the airspace is strictly regulated.Water storage reservoirs are very important for the water-scarce country.Like MacRitch...In May 2021,drones began hovering over MacRitchie Reservoir,which is unusual in Singapore,where the airspace is strictly regulated.Water storage reservoirs are very important for the water-scarce country.Like MacRitchie,the country’s other 16 reservoirs are also surrounded by dense tropical rain forests.The beautiful scenery has made them popular leisure destinations for Singaporeans.Regular patrols are necessary to monitor water quality and algae growth and prevent illegal fishing.According to an estimate from PUB,Singapore’s National Water Agency,it takes 7,200 working hours a year to complete these tasks in six of the reservoirs,including MacRitchie.Last year,the government set up a remote sensing system equipped with drones and cameras in each of the six.展开更多
文摘During the 14th Five-Year Plan period,a government-led transformation,incorporating resident’s participation,has breathed new life into the capital’s aging neighborhoods.
基金supported by the Natural Science Foundation of Shandong Province(No.ZR2020MB049)the Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai(No.AMGM2023A07)。
文摘As an important sustainable energy source,Li-ion batteries have been widely used in mobile phones,electric vehicles,large-scale energy storage and aerospace.However,due to the inevitable safety risks of traditional liquid Li-ion batteries,the use of all-solid-state batteries to replace organic liquid electrolytes has become one of the most effective ways to solve safety problem.Solid-state electrolyte(SSE)is the core part of allsolid-state Li-ion battery,and ideal SSE has the characteristics of high ionic conductivity,wide enough electrochemical stability window,suitable mechanical strength and excellent chemical stability,the first among which is particularly an essential prerequisite.While,so far only a few SSEs exhibit the Li ionic conductivities higher than 10^(-4) S/cm at room temperature.
基金Supported by Noor Ophthalmology Research Center.
文摘AIM:To compare the visual and optical outcomes following femtosecond laser in situ keratomileusis(FS-LASIK)using an aberration neutral profile with asymmetric offset(AO)and pupil center(PC)treatments.METHODS:In this randomized double-blind clinical trial study,48(24 cases)and 38 eyes(19 cases)underwent myopic astigmatism and hyperopic astigmatism LASIK.One eye of each individual was randomly assigned to AO centration and the fellow eye underwent the PC-centered method.The clinical outcomes including uncorrected visual acuity(UCVA),best-corrected visual acuity(BCVA),safety and efficacy indexes,subjective spherical equivalent(SE)and corneal high-order aberrations(HOAs)were measured at baseline and 6mo postoperatively.RESULTS:In the myopic group,the mean preoperative SE and astigmatism were-4.12±0.87(-2.88 to-6.00)diopter(D)and-0.88±0.79(0 to-2.75)D,respectively.In the hyperopic group,the mean preoperative SE and astigmatism were 0.93±0.59(-0.25 to 2.25)D and-0.73±1.00(0 to-4.25)D,respectively.At 6mo postoperatively,the safety and efficacy indexes were similar for centration in myopic and hyperopic LASIK groups.In the myopic group,significant changes were found in horizontal trefoil(P=0.041)and oblique trefoil(P=0.031)in favor of AO centration treatment.CONCLUSION:Femtosecond-LASIK is a safe and efficacious procedure for treatment of myopic and hyperopic astigmatism.AO-centered and PC-centered approaches provide similar visual and refractive outcomes.Myopic astigmatism LASIK with AO centration leads to slightly better corneal aberration outcomes.
文摘A crystal is a highly organized arrangement of atoms in a solid, wherein a unit cell is periodically repeated to form the crystal pattern. A unit cell is composed of atoms that are connected to some of their first neighbors by chemical bonds. A recent rule, entitled the even-odd rule, introduced a new way to calculate the number of covalent bonds around an atom. It states that around an uncharged atom, the number of bonds and the number of electrons have the same parity. In the case of a charged atom on the contrary, both numbers have different parity. The aim of the present paper is to challenge the even-odd rule on chemical bonds in well-known crystal structures. According to the rule, atoms are supposed to be bonded exclusively through single-covalent bonds. A distinctive criterion, only applicable to crystals, states that atoms cannot build more than 8 chemical bonds, as opposed to the classical model, where each atom in a crystal is connected to every first neighbor without limitation. Electrical charges can be assigned to specific atoms in order to compensate for extra or missing bonds. More specifically the article considers di-atomic body-centered-cubic, tetra-atomic and dodeca-atomic single-face-centered-cubic crystals. In body-centered crystals, atoms are interconnected by 8 covalent bonds. In face-centered crystal, the unit cell contains 4 or 12 atoms. For di-element crystals, the total number of bonds for both elements is found to be identical. The neutrality of the unit cell is obtained with an opposite charge on the nearest or second-nearest neighbor. To conclude, the even-odd rule is applicable to a wide number of compounds in known cubic structures and the number of chemical bonds per atom is not related to the valence of the elements in the periodic table.
基金Project supported by the National Natural Science Foundation of China(Nos.11371240 and11771274)
文摘The two-dimensional(2D) pseudo-steady isothermal flow, which is isentropic and irrotational, around a convex corner is studied. The self-similar solutions for the supersonic flow around the convex corner are constructed, where the properties of the centered simple wave are used for the 2D isentropic irrotational pseudo-steady Euler equations. The geometric procedures of the center simple waves are given. It is proven that the supersonic flow turns the convex corner by an incomplete centered expansion wave or an incomplete centered compression wave, depending on the conditions of the downstream state.
基金financially supported by the Natural Science Foundation of Beijing (Grant No.Z140002)
文摘Micron-scale face-centered cubic titanium phase（named as δ phase） were noticed in the re-melted zone of laser surface re-melted commercially pure titanium plate.The morphology,sub-structure,orientation and distribution of δ phase were investigated by scanning electron microscopy,electron back-scattered diffraction and transmission electron microscopy.Three kind formation processes of δ phase were put forward based on the investigation.The first one is α＇→δ transformation which takes place in single α＇grains and leads to the orientation relationship {001}δ//{0001}α＇〈 110 〉 δ//〈 112^-0 〉α＇.The second one is β→α＇＋ δ transformation which takes place at α＇/α＇interfaces and leads to the orientation relationship{001}δ//{11^-0}β〈110〉 δ//〈111〉β.The third one is another kind of β→α＇＋ δ transformation that takes place at α＇/α＇interfaces and leads to the orientation relationship{11^-1}δ//{11^-0}β〈 110 〉 δ//〈 111 〈 β.It is believed that the transformations of δ phase are stress assistant ones and in the present investigation,the phase transformation stress of β→α＇transformation acts as the assistant driving force for the formation of δ phase.
文摘Family Centered care is a model that is practiced and encouraged in child health care. It considers family as partners and collaborators in care of children. It aims at involving family in all aspects of child care. Family centered care also mentions involvement of child. However, emphasis is given more on family than child and does not take into account the older child’s capacity for independent decision making and right to privacy. As such, child’s needs are missed out. With child centered care, children are involved and supported at all levels of care based on their age and developmental stage. This paper aims to stress the importance of involving children within family centered care. Involving children in their care, makes them feel less threatened by the health care professional and their self esteem is promoted. Currently, no studies have been identified in Malawi that demonstrates full partnership between the family, child and the nurse. Furthermore, Family Centered Care and Child Centered Care as models are not fully practiced. It is therefore important to practice both family and child centered care in child health care if the needs of both family and children are to be addressed concurrently.
文摘1.Background Engel's biopsychosocial model,which was constructed in 1977,was considered a momentous breakthrough from the traditional biomedical model of medicine that regards the person as a disease-carrier requiring diagnosis and treatment[1]towards recognition of the whole person and furnish customized care.This model argues that health should not be considered solely on biological factors but on a combination of biological,psychological,and social factors[2].This idea of considering individuals as a whole and respecting their rights to self-determination has led to a shift in the care model from disease-centered care to patient-centered or person-centered care.The latter two care models are both abbreviated as PCC.Ensuring that people are involved in and central to the healthcare process is now recognized as a key component in developing high-quality care.Studies have revealed that both concepts of care can help improve people's health condition and lower health service burdens.Thus,countries and healthcare organizations have been paying close attention to the patients'concerns.The National Health Service in England has made person-centered care as one of its seven core principles[3].
文摘This paper shows that the centered fractional derivatives introduced by Manuel Duarte Ortigueira in 2006 are useful in the description of optical solitons. It is shown that we can construct a fractional extension of the nonlinear Schrödinger (NLS) equation which incorporates Ortigueira’s derivatives and has soliton solutions. It is also shown that this fractional NLS equation has a Lagrangian density and can be derived from a variational principle. Finally, a fractional extension of Noether’s theorem is formulated to determine the conserved quantities associated to the invariances of the action integral under infinitesimal transformations.
文摘Talent cultivation is the primary task of universities.Local general undergraduate colleges and universities should adhere to the basic guidelines of systematization,practicality and integration,continuously explore the concept of"studentcentered"talent cultivation,and build a threedimensional practical teaching system from three aspects:strengthening the planning and design of the three-dimensional practical teaching system;building an internal and external practical teaching platform;and improving the evaluation and guarantee system of practical teaching quality.The system of practical teaching quality evaluation and guarantee is improved.In order to improve the cultivation ability of applied talents in all aspects.
文摘A dislocation interaction model has been proposed for cyclic deformation of fcc crystals.Ac- cording to this model,cyclic stress-strain responses and saturation dislocation structures of a crystal are associated with the modes and intensities of dislocation interactions between slip systems active in the crystal; and,hence,may be predicted by the location of its tensile axis in the crystallographic triangle.This model has successfully explained the different behaviours of double-slip crystals and multi-slip behaviours of some crystals with orientations usually con- sidered as single-slip ones.
文摘The presence of oxygen in the subsurface in monomer-dimer reactions(CO-O_(2)and NO-CO)is observed experimentally.The effect of subsurface oxygen on a CO-O_(2)catalytic reaction on a face-centered cubic(FCC)lattice is studied using Monte Carlo simulation.The effect of adding subsurface neighbours on the phase diagram is also extensively explored.It is observed that the subsurface oxygen totally eliminates the typical second order phase transition.It is also shown that the introduction of the diffusion of O atoms and the subsurface of the FCC lattice shifts the single transition point towards the stoichiometric ratio.
基金supported by the National Natural Science Foundation of China (No. 11371379)
文摘We analyze the local behavior of the Hausdorff centered measure for self- similar sets. If E is a self-similar set satisfying the open set condition, thenC^s（E∩B（x,r））≤（2r）^sfor all x ∈ E and r〉 0, where Cs denotes the s-dimensional Hausdorff centered measure. The above inequality is used to obtain the upper bound of the Hausdorff centered measure. As the applications of above inequality, We obtained the upper bound of the Hausdorff centered measure for some self-similar sets with Hausdorff dimension equal to 1, and prove that the upper bound reach the exact Hausdorff centered measure.
文摘In this paper,we investigate methodologies to improve direct-touch interaction on invisible and intangible spatial input.We firstly discuss about the motive of looking for a new input method for whole body interaction and how it can be meaningful.We also describe the role that can play spatial interaction to improve the freedom of interaction for a user.We propose a method of spatial centered interaction using invisible and intangible spatial inputs.However,given their lack of tactile feedback and visual representation,direct touch interaction on such input can be confused.In order to make a step toward understanding causes and solutions for such phenomena,we made 2 user experiments.In the first one,we test 5 setups of helper that provide information of the location of the input by constraining the dimension it is located at.The results show that using marker on the ground and a relationship with the height of the user’s body improve significantly the locative task.In the second experiment,we create a dancing game using invisible and intangible spatial inputs and we stress the results obtained in the first experiment within this cognitively demanding context.Results show that the same setup of helper is still providing very good results in that context.
文摘Aim: This research aims to evaluate patient-centeredness and communication skills from the patients’ point of view and that of the physicians’ point of view and compares the two outcomes. Methods: This was a cross-sectional study with a convenient sample of 418 patients and 94 residents. Instrument of the study was a structured questionnaire that aimed to evaluate patient centeredness and communication skills of the residents. Results: Residents gave themselves a significantly higher score than the score given to them by patients in most studied aspects such as the extent to which the doctor discussed the patient’s problem, the extent to which the doctor explained the problem, the doctor introduced himself, the doctor greeted the patient properly and others. The only aspect for which patients gave residents higher score than that residents gave themselves was the extent to which the doctor asked the patient about what is expected to be done (ECG, CT scan, giving antibiotics, …). Conclusion: A transformation from doctor centered approach to patient centered approach is needed.
文摘This thesis paper is a brief summary of user centered design, (particularly in the situation of under the battlefield), which incorporates the related information after reviewing many other papers. A display screen user requires an ability to provide proper information while considering a variety of information in a short period. While operating the display screen, the user is heavily pressed for time as the missions are allocated through many different steps of orders. In addition, since a failure would cause fatal damage or cause further defeat, this increases the pressure of time. The right environment for operating a display screen is most useful when the user is in the most vulnerable time period or long-term continuous operation of the display screen. In that kind of sterile environment, the operating display screen is there to help the user’s decisions for the matter at hand, in this it should follow the user centered design and improve the user’s handiness and use. Furthermore, the information should be provided in accordance with the user's informational and perceptional process, and the capacity of the information process should be improved with the movement through each process and step. This thesis paper can be used as a reference material when designing the display screen in order to apply a user’s experiences.
文摘Background: Multiple studies in the primary care field have indicated the benefits of using a patient centered approach in communication with the patient;such interviewing methods have been shown to improve patient satisfaction and adherence. There is a scarcity of anesthetic literature regarding communication skills in the perioperative period. The goal is to analyze to what extent empathic patient-centered communication methods are being used by anesthesia providers. Communication scores will be compared among providers, as well as to providers across several different subspecialties. Methods: This study is an observational descriptive study at a large tertiary care center, University Hospital in Newark, NJ. The observer observes and grades patient interviews, scoring against established criteria using an adapted version of the Kalamazoo grading tool. The researcher observes and grades the preoperative interview using the adapted Kalamazoo scale. At the end of the observed encounter, the anesthesia providers are asked to fill out a brief form detailing their demographic history, details regarding the providers’ length and type of clinical education and training, undergraduate education, previous communication training, number of years of practice, primary language, gender, and age will be obtained. Results: Anesthesia providers included in the study were physician anesthesiologists, residents, and nurse anesthetists. The average Kalamazoo score was 28.7 amongst all providers. There was no significant effect of provider level on the score at the p Conclusions: The data revealed anesthesia providers provide patient-centered encounters with a mean score of 28.7, which is higher than the average for providers from multiple different specialties observed in Joyce, et al. study (mean score of 25.25). The subcategories “Understanding patient’s perspective” and “reaches agreement” scored 3.86, and 3.83, respectively. This may indicate that anesthesia providers can improve on allowing the patient to communicate their understanding of anesthesia, as well as collecting information from the patient that can affect their anesthesia (i.e., severe nausea following previous anesthesia).
文摘In May 2021,drones began hovering over MacRitchie Reservoir,which is unusual in Singapore,where the airspace is strictly regulated.Water storage reservoirs are very important for the water-scarce country.Like MacRitchie,the country’s other 16 reservoirs are also surrounded by dense tropical rain forests.The beautiful scenery has made them popular leisure destinations for Singaporeans.Regular patrols are necessary to monitor water quality and algae growth and prevent illegal fishing.According to an estimate from PUB,Singapore’s National Water Agency,it takes 7,200 working hours a year to complete these tasks in six of the reservoirs,including MacRitchie.Last year,the government set up a remote sensing system equipped with drones and cameras in each of the six.
