Interference effects associated with the coherent emission of an electron from the identical atom... more Interference effects associated with the coherent emission of an electron from the identical atomic centers of H2 have been investigated. The interferences are manifested as oscillations in the measured electron yield as a function of the electron energy. This work, conducted at Western Michigan University using the tandem Van de Graaff accelerator, focuses on the ionization of H2 by 1--5
Interference is expected to occur when electrons are ejected coherently within a multi-center mol... more Interference is expected to occur when electrons are ejected coherently within a multi-center molecular field. In the present work we focused on ionization from an H2 target, a molecule composed of two indistinguishable atoms, by 3 MeV H^+ impact. A parallel-plate electron spectrometer was used to measure cross sections for electron emission from ˜ 3-250 eV at observation angles 30^o,
Single-and double-electron transfer to autoionizing 1s2l2l 0 configurations in fluorine ions have... more Single-and double-electron transfer to autoionizing 1s2l2l 0 configurations in fluorine ions have been investigated for 1:1 MeV=u collisions of F 7 and F 8 with He and Ne. The resulting Auger electron emission spectra show anomolously large intensities for the formation of the metastable 1s2s2p 3 P 4 P state compared to the similarly configured 1s2s2p 3 P 2 P ÿ and 1s2s2p 1 P 2 P states. The large 4 P intensity, which cannot be explained on the basis of spin statistics, is attributed instead to the Pauli exchange of similarly aligned electrons.
Primary and secondary interference structures attributed to coherent electron emission from the i... more Primary and secondary interference structures attributed to coherent electron emission from the identical atomic centers of H 2 have been observed in the velocity distributions of ejected electrons resulting from ͑1-5͒-MeV H + impact. The primary interference structures are found to depend on the projectile velocity, in addition to the previously observed dependence on electron ejection angle. In contrast, the secondary structures, attributed to intramolecular scattering, do not change with projectile velocity and show only slight variations with the electron ejection angle. The data also provide evidence for significantly higher-frequency structures for which no explanation currently exists.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2003
Interference effects are expected to occur when electrons are emitted coherently within a multi-c... more Interference effects are expected to occur when electrons are emitted coherently within a multi-center molecular field. This phenomenon is analogous to Young’s two-slit experiment. The present work focuses on ionization of H2, a molecule composed of two indistinguishable centers, by 3 and 5 MeV H+ impact. A parallel-plate electron spectrometer was used to investigate electron emission in the range ∼3–250
Journal of applied clinical medical physics, May 8, 2016
The purpose of this study is to evaluate patient setup accuracy and quantify individual and cumul... more The purpose of this study is to evaluate patient setup accuracy and quantify individual and cumulative positioning uncertainties associated with different hardware and software components of the stereotactic radiotherapy (SRS/SRT) with the frameless 6D ExacTrac system. A statistical model is used to evaluate positioning uncertainties of the different components of SRS/SRT treatment with the Brainlab 6D ExacTrac system using the positioning shifts of 35 patients having cranial lesions. All these patients are immobilized with rigid head-and-neck masks, simulated with Brainlab localizer and planned with iPlan treatment planning system. Stereoscopic X-ray images (XC) are acquired and registered to corresponding digitally reconstructed radiographs using bony-anatomy matching to calculate 6D translational and rotational shifts. When the shifts are within tolerance (0.7 mm and 1°), treatment is initiated. Otherwise corrections are applied and additional X-rays (XV) are acquired to verify t...
Journal of theoretical and applied information technology, 2020
In past few eras, emotion recognition from speech is one of the hottest research topic in the fie... more In past few eras, emotion recognition from speech is one of the hottest research topic in the field of Human Computer Interaction. Many researches are going on various types of language, but for Bengali language, it is still very novice. In this work, 4 emotional state have been recognized i.e. happy, sad, angry and neutral from Bengali Speech Dataset. Proposed approach uses Pitch and Mel-frequency Cepstral Coefficient (MFCC) feature vectors to train k-Nearest Neighbor classifier for this work. A self-built Bengali emotional speech dataset has been used for both training and testing purpose. The dataset consists of consist of 50 people with 400 isolated emotional sentences. Using this dataset and above technique, we achieved 87.50% average accuracy rate, with detection accuracy each emotion (happy, sad, angry, neutral) respectively 80.00%, 75.00%, 85.00% and 75.00% in this work.
The purpose of this study is to identify the socio-economic and demographic factors affecting on ... more The purpose of this study is to identify the socio-economic and demographic factors affecting on migrat ion to Chapai-Nawabganj city in Bangladesh. To this, frequency distribution and logistic regression analysis are employed to the data extracted from 750 respondents of the Pouroshava of Chapai-Nawabganj district in Bangladesh through purposive sampling technique. The findings of this study reveal that most of the respondents are migrants (56%) with a monthly income of more than Tk.7000 (73.6%), and belongs to single type of family (82.7%). The risk of migration to the cities increases with the increase in age of the respondents where as it also bears an inverse relation to the level of education, monthly income and numbers of family members. Also, non-muslim respondents engaged in business or other types of occupation and having place of birth in rural areas are more vulnerab le to higher risk of migrat ion to the cities as compared to their counterparts. From the broader perspect...
Submitted for the DAMOP06 Meeting of The American Physical Society Direct Observation of Resonanc... more Submitted for the DAMOP06 Meeting of The American Physical Society Direct Observation of Resonance Condensation in Imbalanced Fermi Mixtures1 MARTIN W. ZWIERLEIN, ANDRE SCHIROTZEK, CHRISTIAN H. SCHUNCK, WOLFGANG KETTERLE, MIT — We directly observe pair condensation in an unequal mixture of resonantly interacting fermionic 6Li atoms. Condensation is revealed by the sudden appearance of a bimodal density distribution in the minority spin component below a critical temperature. Already above the critical temperature for condensation, strong interactions between the two spin states are manifest in the deformed density distribution of the larger cloud. Temperatures can be directly determined from the noninteracting wings of the majority component. Beyond a critical population imbalance of 71(3)% on resonance, no condensates are observed, in agreement with our earlier observation of the Pauli limit of superfluidity. We show that for higher than critical imbalance, the central densities of...
2021 6th International Conference on Communication and Electronics Systems (ICCES), 2021
Chronic kidney disease is the reason for many deaths all over the world every year. Chronic kidne... more Chronic kidney disease is the reason for many deaths all over the world every year. Chronic kidney disease has troubled almost 753 million people all over the world in 2016, wherein 417 million are females and 336 million are males. In the year 2015, it was the reason for 1.2 million deaths all over the world. When CKD is detected in the later stage of a diabetes patient, it is very harmful to them. Sometimes it leads them to death. But if it is possible to detect chronic kidney disease at an early stage of diabetes patients, the damage can be minimized. This research paper has shown a comparative analysis on the performance of some algorithms - Multilayer Perceptron, Bagging, and Adaboost. And this research work has also used some algorithms such as Bagging (J48), Bagging (Random Tree), Bagging (Decision Stump), Bagging (LMT), Adaboost (Random Tree), Adaboost (Decision Stump), Adaboost (J48), Adaboost (Random Forest). Our comparison of different algorithms will help people having diabetes to figure out whether they will have CKD or not in the future. From all these algorithms Bagging (Random Tree) and AdaBoost (Random Forest) have the best result. By comparing the results of all algorithms, the best algorithm can be detected for predicting the chronic kidney disease. This study can save many people's lives and money. Doctors can also be benefitted from this research.
2019 4th International Conference on Electrical Information and Communication Technology (EICT), 2019
With the increase of data size, data analysis is becoming very important for finding hidden knowl... more With the increase of data size, data analysis is becoming very important for finding hidden knowledge. This data may contain sensitive information of individuals that could be revealed while accessing the data from sources. Most individuals or organizations do not want to reveal their personal information because of privacy leakage. In recent years, many models and methods have been designed for preserving privacy such as using matrix decomposition techniques. In this paper, Sparsfied Singular Value Decomposition (SSVD) and Non-negative Matrix Factorization (NMF) are used and a hybrid approach based on those methods has been proposed. The main reason is that the decomposition of matrix more than once removes more sensitive information. By removing the sensitive data, we can improve the privacy of the dataset and keep the data utility considerable. The approach provided here ensures better privacy while keeping good data utility.
The interconnectedness of science and religion-two radically different areas in essence but with ... more The interconnectedness of science and religion-two radically different areas in essence but with striking connexions in terms of scopehas entailed reconsideration and reconstruction of some notions, particularly pertaining to areas of religion. This paper presents existing conceptions of one of religion's fundamental constituent elements, theology. In discussing theology, with a brief account of its Islamic counterpart, the current paper indulges in an analysis of some of its vital elements. Upon exploring theology, focus is placed upon the discipline of cosmology and its twofold practices, namely the scientific and theological. Most significantly, a newly articulated, well-categorised framework is provided for theological cosmology, which paves the way for further profound dialogue on the scope and intersection of theology and science in the context of cosmology. In addition, the article attempts to distinguish theological as well as scientific cosmological perceptions and articulate a well-organised analysis containing key discrepancies. Such resounding divergence can produce some fundamental principles for studying the cosmos-both from a scientific as well as theological perspective.
Abstract We analyze flowback and post-flowback production data from six multi-fractured horizonta... more Abstract We analyze flowback and post-flowback production data from six multi-fractured horizontal wells completed in Eagle Ford shale formation. Petrophysical analysis of samples from an offset well shows that the target shale is in oil window with type II kerogen. We analyze two groups of wells with different well-completion and operational parameters. Wells fractured with slickwater, with higher total injected volume (TIV) and larger choke size show higher initial oil rate, but faster pressure depletion compared with the wells fractured with cross-linked gel, with lower TIV and smaller choke size. Both groups show supercharged fractures when flowback starts and reservoir pressure remains above bubble point during post-flowback period. Interestingly, rate-normalized pressure plots of oil and water from both groups during post-flowback period show pronounced unit slope indicating boundary dominated flow (BDF), while this trend is not observed during flowback period. Analysis of rate-normalized pressure and rate-decline data suggests that both oil and water are produced from a closed tank under BDF conditions. We propose a multiphase flowing material balance (FMB) model to describe water and oil production from an effective stimulated reservoir volume (ESRV) during post-flowback period. The proposed FMB model assumes negligible oil and water influx into ESRV. The driving forces considered are closure of fractures and expansion of oil and water in ESRV. Applying the proposed model on post-flowback data confirms that after fracture depletion, oil is produced from highly stimulated matrix around hydraulic fractures while water is mainly produced from fractures.
SPE Annual Technical Conference and Exhibition, 2019
In this study, we propose a new method for estimating average fracture compressibility (cf¯) duri... more In this study, we propose a new method for estimating average fracture compressibility (cf¯) during flowback process, and apply it on flowback data from thirty multi-fractured horizontal wells completed in Eagle Ford, Horn River, Montney and Woodford formations. We conduct complementary diagnostic flow regime analyses and calculate cf¯ by combining a flowing material balance equation with rate-decline analysis. We observe two production signatures during flowback: (1) single-phase water production followed by hydrocarbon breakthrough and (2) immediate production of hydrocarbon with water. Water rate-normalized-pressure plots show pronounced unit slopes, suggesting pseudo-steady state flow. Water decline curves follow a harmonic trend during multiphase flow; from which we forecasted ultimate water production as an estimate of initial fracture volume. The cf¯ estimates are within the range of 7 – 200 × 10-6 psi-1, and are generally lower than the values previously estimated using Aguilera’s type curves and DFIT data. Also, cf¯ estimates for deeper dry gas wells are relatively higher than those for shallower oil wells.
NUANSA: Jurnal Penelitian Ilmu Sosial dan Keagamaan Islam, 2018
Upon distinguishing cosmogony-the ultimate origin of the cosmos-from cosmogony-the early state of... more Upon distinguishing cosmogony-the ultimate origin of the cosmos-from cosmogony-the early state of the cosmos, the paper presents a Qur"anic account of cosmogeny based on three relevant verses. The articulated Qur"anic cosmogeny of the paper affirms the doctrine of creatio ex nihilo and reveals the metaphysical origin of the cosmos. A number of cosmogenical principles are also presented in the article, which further demonstrate and reaffirm the theocentric nature of Qur"anic as well as Islamic cosmologies. The denouncement of absolute nothingness as per the newly-formulated cosmogeny and its principles presented in the paper certainly indicates the fundamental difference between the natures of the reality and the Ultimate Reality in Islam.
Interference effects associated with the coherent emission of an electron from the identical atom... more Interference effects associated with the coherent emission of an electron from the identical atomic centers of H2 have been investigated. The interferences are manifested as oscillations in the measured electron yield as a function of the electron energy. This work, conducted at Western Michigan University using the tandem Van de Graaff accelerator, focuses on the ionization of H2 by 1--5
Interference is expected to occur when electrons are ejected coherently within a multi-center mol... more Interference is expected to occur when electrons are ejected coherently within a multi-center molecular field. In the present work we focused on ionization from an H2 target, a molecule composed of two indistinguishable atoms, by 3 MeV H^+ impact. A parallel-plate electron spectrometer was used to measure cross sections for electron emission from ˜ 3-250 eV at observation angles 30^o,
Single-and double-electron transfer to autoionizing 1s2l2l 0 configurations in fluorine ions have... more Single-and double-electron transfer to autoionizing 1s2l2l 0 configurations in fluorine ions have been investigated for 1:1 MeV=u collisions of F 7 and F 8 with He and Ne. The resulting Auger electron emission spectra show anomolously large intensities for the formation of the metastable 1s2s2p 3 P 4 P state compared to the similarly configured 1s2s2p 3 P 2 P ÿ and 1s2s2p 1 P 2 P states. The large 4 P intensity, which cannot be explained on the basis of spin statistics, is attributed instead to the Pauli exchange of similarly aligned electrons.
Primary and secondary interference structures attributed to coherent electron emission from the i... more Primary and secondary interference structures attributed to coherent electron emission from the identical atomic centers of H 2 have been observed in the velocity distributions of ejected electrons resulting from ͑1-5͒-MeV H + impact. The primary interference structures are found to depend on the projectile velocity, in addition to the previously observed dependence on electron ejection angle. In contrast, the secondary structures, attributed to intramolecular scattering, do not change with projectile velocity and show only slight variations with the electron ejection angle. The data also provide evidence for significantly higher-frequency structures for which no explanation currently exists.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2003
Interference effects are expected to occur when electrons are emitted coherently within a multi-c... more Interference effects are expected to occur when electrons are emitted coherently within a multi-center molecular field. This phenomenon is analogous to Young’s two-slit experiment. The present work focuses on ionization of H2, a molecule composed of two indistinguishable centers, by 3 and 5 MeV H+ impact. A parallel-plate electron spectrometer was used to investigate electron emission in the range ∼3–250
Journal of applied clinical medical physics, May 8, 2016
The purpose of this study is to evaluate patient setup accuracy and quantify individual and cumul... more The purpose of this study is to evaluate patient setup accuracy and quantify individual and cumulative positioning uncertainties associated with different hardware and software components of the stereotactic radiotherapy (SRS/SRT) with the frameless 6D ExacTrac system. A statistical model is used to evaluate positioning uncertainties of the different components of SRS/SRT treatment with the Brainlab 6D ExacTrac system using the positioning shifts of 35 patients having cranial lesions. All these patients are immobilized with rigid head-and-neck masks, simulated with Brainlab localizer and planned with iPlan treatment planning system. Stereoscopic X-ray images (XC) are acquired and registered to corresponding digitally reconstructed radiographs using bony-anatomy matching to calculate 6D translational and rotational shifts. When the shifts are within tolerance (0.7 mm and 1°), treatment is initiated. Otherwise corrections are applied and additional X-rays (XV) are acquired to verify t...
Journal of theoretical and applied information technology, 2020
In past few eras, emotion recognition from speech is one of the hottest research topic in the fie... more In past few eras, emotion recognition from speech is one of the hottest research topic in the field of Human Computer Interaction. Many researches are going on various types of language, but for Bengali language, it is still very novice. In this work, 4 emotional state have been recognized i.e. happy, sad, angry and neutral from Bengali Speech Dataset. Proposed approach uses Pitch and Mel-frequency Cepstral Coefficient (MFCC) feature vectors to train k-Nearest Neighbor classifier for this work. A self-built Bengali emotional speech dataset has been used for both training and testing purpose. The dataset consists of consist of 50 people with 400 isolated emotional sentences. Using this dataset and above technique, we achieved 87.50% average accuracy rate, with detection accuracy each emotion (happy, sad, angry, neutral) respectively 80.00%, 75.00%, 85.00% and 75.00% in this work.
The purpose of this study is to identify the socio-economic and demographic factors affecting on ... more The purpose of this study is to identify the socio-economic and demographic factors affecting on migrat ion to Chapai-Nawabganj city in Bangladesh. To this, frequency distribution and logistic regression analysis are employed to the data extracted from 750 respondents of the Pouroshava of Chapai-Nawabganj district in Bangladesh through purposive sampling technique. The findings of this study reveal that most of the respondents are migrants (56%) with a monthly income of more than Tk.7000 (73.6%), and belongs to single type of family (82.7%). The risk of migration to the cities increases with the increase in age of the respondents where as it also bears an inverse relation to the level of education, monthly income and numbers of family members. Also, non-muslim respondents engaged in business or other types of occupation and having place of birth in rural areas are more vulnerab le to higher risk of migrat ion to the cities as compared to their counterparts. From the broader perspect...
Submitted for the DAMOP06 Meeting of The American Physical Society Direct Observation of Resonanc... more Submitted for the DAMOP06 Meeting of The American Physical Society Direct Observation of Resonance Condensation in Imbalanced Fermi Mixtures1 MARTIN W. ZWIERLEIN, ANDRE SCHIROTZEK, CHRISTIAN H. SCHUNCK, WOLFGANG KETTERLE, MIT — We directly observe pair condensation in an unequal mixture of resonantly interacting fermionic 6Li atoms. Condensation is revealed by the sudden appearance of a bimodal density distribution in the minority spin component below a critical temperature. Already above the critical temperature for condensation, strong interactions between the two spin states are manifest in the deformed density distribution of the larger cloud. Temperatures can be directly determined from the noninteracting wings of the majority component. Beyond a critical population imbalance of 71(3)% on resonance, no condensates are observed, in agreement with our earlier observation of the Pauli limit of superfluidity. We show that for higher than critical imbalance, the central densities of...
2021 6th International Conference on Communication and Electronics Systems (ICCES), 2021
Chronic kidney disease is the reason for many deaths all over the world every year. Chronic kidne... more Chronic kidney disease is the reason for many deaths all over the world every year. Chronic kidney disease has troubled almost 753 million people all over the world in 2016, wherein 417 million are females and 336 million are males. In the year 2015, it was the reason for 1.2 million deaths all over the world. When CKD is detected in the later stage of a diabetes patient, it is very harmful to them. Sometimes it leads them to death. But if it is possible to detect chronic kidney disease at an early stage of diabetes patients, the damage can be minimized. This research paper has shown a comparative analysis on the performance of some algorithms - Multilayer Perceptron, Bagging, and Adaboost. And this research work has also used some algorithms such as Bagging (J48), Bagging (Random Tree), Bagging (Decision Stump), Bagging (LMT), Adaboost (Random Tree), Adaboost (Decision Stump), Adaboost (J48), Adaboost (Random Forest). Our comparison of different algorithms will help people having diabetes to figure out whether they will have CKD or not in the future. From all these algorithms Bagging (Random Tree) and AdaBoost (Random Forest) have the best result. By comparing the results of all algorithms, the best algorithm can be detected for predicting the chronic kidney disease. This study can save many people's lives and money. Doctors can also be benefitted from this research.
2019 4th International Conference on Electrical Information and Communication Technology (EICT), 2019
With the increase of data size, data analysis is becoming very important for finding hidden knowl... more With the increase of data size, data analysis is becoming very important for finding hidden knowledge. This data may contain sensitive information of individuals that could be revealed while accessing the data from sources. Most individuals or organizations do not want to reveal their personal information because of privacy leakage. In recent years, many models and methods have been designed for preserving privacy such as using matrix decomposition techniques. In this paper, Sparsfied Singular Value Decomposition (SSVD) and Non-negative Matrix Factorization (NMF) are used and a hybrid approach based on those methods has been proposed. The main reason is that the decomposition of matrix more than once removes more sensitive information. By removing the sensitive data, we can improve the privacy of the dataset and keep the data utility considerable. The approach provided here ensures better privacy while keeping good data utility.
The interconnectedness of science and religion-two radically different areas in essence but with ... more The interconnectedness of science and religion-two radically different areas in essence but with striking connexions in terms of scopehas entailed reconsideration and reconstruction of some notions, particularly pertaining to areas of religion. This paper presents existing conceptions of one of religion's fundamental constituent elements, theology. In discussing theology, with a brief account of its Islamic counterpart, the current paper indulges in an analysis of some of its vital elements. Upon exploring theology, focus is placed upon the discipline of cosmology and its twofold practices, namely the scientific and theological. Most significantly, a newly articulated, well-categorised framework is provided for theological cosmology, which paves the way for further profound dialogue on the scope and intersection of theology and science in the context of cosmology. In addition, the article attempts to distinguish theological as well as scientific cosmological perceptions and articulate a well-organised analysis containing key discrepancies. Such resounding divergence can produce some fundamental principles for studying the cosmos-both from a scientific as well as theological perspective.
Abstract We analyze flowback and post-flowback production data from six multi-fractured horizonta... more Abstract We analyze flowback and post-flowback production data from six multi-fractured horizontal wells completed in Eagle Ford shale formation. Petrophysical analysis of samples from an offset well shows that the target shale is in oil window with type II kerogen. We analyze two groups of wells with different well-completion and operational parameters. Wells fractured with slickwater, with higher total injected volume (TIV) and larger choke size show higher initial oil rate, but faster pressure depletion compared with the wells fractured with cross-linked gel, with lower TIV and smaller choke size. Both groups show supercharged fractures when flowback starts and reservoir pressure remains above bubble point during post-flowback period. Interestingly, rate-normalized pressure plots of oil and water from both groups during post-flowback period show pronounced unit slope indicating boundary dominated flow (BDF), while this trend is not observed during flowback period. Analysis of rate-normalized pressure and rate-decline data suggests that both oil and water are produced from a closed tank under BDF conditions. We propose a multiphase flowing material balance (FMB) model to describe water and oil production from an effective stimulated reservoir volume (ESRV) during post-flowback period. The proposed FMB model assumes negligible oil and water influx into ESRV. The driving forces considered are closure of fractures and expansion of oil and water in ESRV. Applying the proposed model on post-flowback data confirms that after fracture depletion, oil is produced from highly stimulated matrix around hydraulic fractures while water is mainly produced from fractures.
SPE Annual Technical Conference and Exhibition, 2019
In this study, we propose a new method for estimating average fracture compressibility (cf¯) duri... more In this study, we propose a new method for estimating average fracture compressibility (cf¯) during flowback process, and apply it on flowback data from thirty multi-fractured horizontal wells completed in Eagle Ford, Horn River, Montney and Woodford formations. We conduct complementary diagnostic flow regime analyses and calculate cf¯ by combining a flowing material balance equation with rate-decline analysis. We observe two production signatures during flowback: (1) single-phase water production followed by hydrocarbon breakthrough and (2) immediate production of hydrocarbon with water. Water rate-normalized-pressure plots show pronounced unit slopes, suggesting pseudo-steady state flow. Water decline curves follow a harmonic trend during multiphase flow; from which we forecasted ultimate water production as an estimate of initial fracture volume. The cf¯ estimates are within the range of 7 – 200 × 10-6 psi-1, and are generally lower than the values previously estimated using Aguilera’s type curves and DFIT data. Also, cf¯ estimates for deeper dry gas wells are relatively higher than those for shallower oil wells.
NUANSA: Jurnal Penelitian Ilmu Sosial dan Keagamaan Islam, 2018
Upon distinguishing cosmogony-the ultimate origin of the cosmos-from cosmogony-the early state of... more Upon distinguishing cosmogony-the ultimate origin of the cosmos-from cosmogony-the early state of the cosmos, the paper presents a Qur"anic account of cosmogeny based on three relevant verses. The articulated Qur"anic cosmogeny of the paper affirms the doctrine of creatio ex nihilo and reveals the metaphysical origin of the cosmos. A number of cosmogenical principles are also presented in the article, which further demonstrate and reaffirm the theocentric nature of Qur"anic as well as Islamic cosmologies. The denouncement of absolute nothingness as per the newly-formulated cosmogeny and its principles presented in the paper certainly indicates the fundamental difference between the natures of the reality and the Ultimate Reality in Islam.
Uploads
Papers by Sabbir hossain