Opini Komunitas Warga Sekitar Tentang Maraknya Pedagang Kaki Lima (PKL) (Studi Deskriptif Analitis Tentang Opini Komunitas Warga Sekitar Pkl – Tamansari, Kepatihan, dan Dalem Kaum – Kota Bandung)

Penelitian dengan judul “Opini komunitas warga sekitar tentang maraknya Pedagang Kaki Lima (PKL)” ini, dilakukan oleh pengajar/dosen tetap Fakultas Ilmu Komunikasi (FIK). Permasalahan penelitian adalah tentang bagaimana opini komunitas warga sekitar PKL mengenai keamanan, ketertiban, ketenangan, Kenyamanan, keindahan, kebersihan, dan keramah-tamahan (7“K”) akibat maraknya PKL. Sasaran strategis dalam penelitian ini adalah komunitas warga di sekitar lingkungan PKL Jalan Kepatihan, Dalem Kaum, dan Tamansari.Tujuan penelitian adalah untuk mengetahui, mengkaji, dan menganalisis faktor 7“K” yang dirasakan komunitas warga sekitar, akibat maraknya PKL, sehingga tanggapan yang diekspresikan mereka dapat menjadi masukan bagi Humas Pemerintah Kota Bandung dalam upaya mensosialisasikan kebijakan pemerintah tentang PKL khususnya dalam merumuskan konsep community relations berkaitan dengan 7 “K” yang dirasakan oleh komunitas warga sekitar terhadap maraknya PKL tersebut. Kesimpulan hasil penelitian ini adalah: pada umumnya opini komunitas warga sekitar terhadap maraknya PKL, dilihat dari faktor 7“K” sangatlah bervariasi di antara opini positif dan negatif, Dalam arti, untuk responden tertentu penilaiannya sangat relatif tergantung dari persepsi masing-masing dan atas dasar pengalaman masing-masing dengan para PKL tersebut. Dengan demikian tidak sepenuhnya berada pada kecenderungan tertentu yang bersifat negatif atau positif. Oleh karena itu dari opini tersebut selanjutnya dapat berkembang untuk diyakini tentang adanya kemungkinan di antara kedua belah pihak saling membina hubungan, dan pemerintah memfasilitasi hubungan tersebut dalam kebijakan-kebijakannya

Biradical Paradox Revisited Quantitatively: A Theoretical Model for Self-Associated Biradical Molecules as Antiferromagnetically Exchange Coupled Spin Chains in Solution

An ESR hyperfine splitting pattern of a biradical in solution depends on the magnitude of the intramolecular exchange interaction <i>J</i>_intra compared with the hyperfine coupling constant <i>A</i>. Some biradicals exhibit their hyperfine splitting patterns characteristic of a monoradical, even though their exchange interaction is strong enough, |<i>J</i>_intra| ≫ |<i>A</i>|. The contradiction in ESR spectroscopy is known as “biradical paradox”, puzzling scientists for a long time. In this study, it is shown from ESR spectral simulations underlain by a theoretical model of a series of spin Hamiltonians that noncovalent aggregation of biradical molecules in solution leads to the appearance of paradoxical ESR spectra. Most of the spins in an aggregate of one dimension lose their contribution to the ESR spectra owing to intermolecular antiferromagnetic interactions <i>J</i>_inter, leaving two outermost spins ESR-active in the aggregate of one dimension. Paradoxical ESR spectra appear only when <i>J</i>_intra and <i>J</i>_inter fall within a particular range of the magnitudes which depends on the number of molecules in the aggregate

Quasi-Restricted Orbital Treatment for the Density Functional Theory Calculations of the Spin–Orbit Term of Zero-Field Splitting Tensors

A quasi-restricted orbital (QRO) approach for the calculation of the spin–orbit term of zero-field splitting tensors (<b>D</b>^SO tensors) by means of density functional theory (DFT) importantly features in the fact that it is free from spin contamination problems because it uses spin eigenfunctions for the zeroth order wave functions. In 2011, however, Schmitt and co-workers pointed out that in the originally proposed QRO working equation some possible excitations were not included in their sum-over-states procedure, which causes spurious <b>D</b>^SO contributions from closed-shell subsystems located far from the magnetic molecule under study. We have revisited the derivation of the QRO working equation and modified it, making it include all possible types of excitations in the sum-over-states procedure. We have found that the spurious <b>D</b>^SO contribution can be eliminated by taking into account contributions from all possible types of singly excited configuration state functions. We have also found that only the SOMO­(α) → SOMO­(β) excited configurations have nonzero contributions to the <b>D</b>^SO tensors as long as α and β spin orbitals have the same spatial distributions and orbital energies. For the <b>D</b>^SO tensor calculations, by using a ground state wave function free from spin contamination, we propose a natural orbital-based Pederson–Khanna (NOB-PK) method, which utilizes the single determinant wave function consisting of natural orbitals in conjunction with the Pederson–Khanna (PK) type perturbation treatment. Some relevant calculations revealed that the NOB-PK method can afford more accurate <b>D</b>^SO tensors than the conventional PK method as well as the QRO approach in Mn^II complexes and Re^IV-based single molecule magnets

Quantum Chemistry on Quantum Computers: A Polynomial-Time Quantum Algorithm for Constructing the Wave Functions of Open-Shell Molecules

Quantum computers are capable to efficiently perform full configuration interaction (FCI) calculations of atoms and molecules by using the quantum phase estimation (QPE) algorithm. Because the success probability of the QPE depends on the overlap between approximate and exact wave functions, efficient methods to prepare accurate initial guess wave functions enough to have sufficiently large overlap with the exact ones are highly desired. Here, we propose a quantum algorithm to construct the wave function consisting of one configuration state function, which is suitable for the initial guess wave function in QPE-based FCI calculations of open-shell molecules, based on the addition theorem of angular momentum. The proposed quantum algorithm enables us to prepare the wave function consisting of an exponential number of Slater determinants only by a polynomial number of quantum operations

An Enantiopair of Organic Ferromagnet Crystals Based on Helical Molecular Packing of Achiral Organic Radicals

We report the ferromagnetic ordering phenomena occurring in organic molecular crystals with structural chirality. Achiral radical <b>1</b> has been found to crystallize in two enantiomorphs with chiral space groups of <i>P</i>4₃ and <i>P</i>4₁. The <i>P</i>4₃ form (<b>1L</b>) has left-handed stacking of the molecules, giving the helical chirality in a crystalline solid. In the other form of <i>P</i>4₁ (<b>1R</b>), the right-handed stacking corresponds to a mirror image of <b>1L</b>. Magnetic susceptibility measurements show that both the crystals undergo a ferromagnetic phase transition at <i>T</i>_C = 1.1 K. The ferromagnetic ordering has been confirmed by heat capacity measurements. The magnetic heat capacity exhibits a λ-shaped peak at <i>T</i>_C = 1.1 K with an entropy change of <i>R </i>ln 2, as expected for <i>S</i> = 1/2 spins. This is the first example of genuinely organic molecule-based ferromagnetism associated with the structural chirality based on the helical molecular packing in the crystalline solid

An Enantiopair of Organic Ferromagnet Crystals Based on Helical Molecular Packing of Achiral Organic Radicals

We report the ferromagnetic ordering phenomena occurring in organic molecular crystals with structural chirality. Achiral radical <b>1</b> has been found to crystallize in two enantiomorphs with chiral space groups of <i>P</i>4₃ and <i>P</i>4₁. The <i>P</i>4₃ form (<b>1L</b>) has left-handed stacking of the molecules, giving the helical chirality in a crystalline solid. In the other form of <i>P</i>4₁ (<b>1R</b>), the right-handed stacking corresponds to a mirror image of <b>1L</b>. Magnetic susceptibility measurements show that both the crystals undergo a ferromagnetic phase transition at <i>T</i>_C = 1.1 K. The ferromagnetic ordering has been confirmed by heat capacity measurements. The magnetic heat capacity exhibits a λ-shaped peak at <i>T</i>_C = 1.1 K with an entropy change of <i>R </i>ln 2, as expected for <i>S</i> = 1/2 spins. This is the first example of genuinely organic molecule-based ferromagnetism associated with the structural chirality based on the helical molecular packing in the crystalline solid

ESR and ¹H-,¹⁹F-ENDOR/TRIPLE Study of Fluorinated Diphenylnitroxides as Synthetic Bus Spin-Qubit Radicals with Client Qubits in Solution

Electron and nuclear spins as quantum bits (qubits) have been the focus of current issues in quantum information science/technology and related fields. From the viewpoint of chemistry, synthetic spin qubits are emerging. Diphenylnitroxide (DPNO) and its novel fluorine-substituted radicals are characterized as synthetic electron bus spin-qubits by continuous-wave ESR and ¹H-,¹⁹F-ENDOR/TRIPLE spectroscopy in solution and by DFT calculations. The partially fluorinated DPNOs have been synthesized to illustrate that they are candidates for the synthetic bus spin-qubits with well-defined client qubits. The fluorinated DPNOs undergo spin delocalization, dominating the robust spin polarization in the π-conjugation of phenyl rings, serving to increase the number of distinguishable client qubits from three to six

Fluoreno[2,3‑<i>b</i>]fluorene vs Indeno[2,1‑<i>b</i>]fluorene: Unusual Relationship between the Number of π Electrons and Excitation Energy in <i>m</i>‑Quinodimethane-Type Singlet Diradicaloids

The dimesityl derivative of fluoreno­[2,3-<i>b</i>]­fluorene (<b>6b</b>) was synthesized and its structure and physical properties were investigated to elucidate the effects of its enhanced open-shell character, which was predicted theoretically in comparison with the smaller congener indeno­[2,1-<i>b</i>]­fluorene (<b>5b</b>). All structural and physical properties are in accordance with the theoretical predictions and can be interpreted in terms of the resonance contributors. The most remarkable spectroscopic property is the larger excitation energy of 24π-electron hydrocarbon <b>6b</b> than that of 20π-electron system <b>5b</b> in their lowest energy absorption bands of electronic spectra, a trend that is contrary to the well-known feature for common, alternant aromatic hydrocarbons. The theoretical basis of this unusual behavior was elucidated on the basis of the balance between the diradical character, exchange integral, and HOMO–LUMO gap and was confirmed by a complete-active-space configuration–interaction method with two electrons in two orbitals for the corresponding parent hydrocarbons <b>5a</b> and <b>6a</b>

Preparation and Magnetic Properties of Metal-Complexes from <i>N</i>‑<i>t</i>‑Butyl‑<i>N</i>‑oxidanyl-2-amino-(nitronyl nitroxide)

Metal complexation reactions of <i>N</i>-<i>t</i>-butyl-<i>N</i>-oxidanyl-2-amino­(nitronyl nitroxide) diradical (<b>1</b>) with M­(hfac)₂ (M: Mn or Cu) were investigated. These reactions were found to be very sensitive to the type of metal ion employed. Complex [Mn­(hfac)₂·<b>1</b>], consisting of Mn­(hfac)₂ and diradical <b>1</b>, was readily prepared by mixing the components. However, the reaction of Cu­(hfac)₂ with <b>1</b> or <i>N</i>-<i>t</i>-butyl-<i>N</i>-oxidanyl-2-amino­(iminonitroxide) diradical (<b>2</b>) involved the reduction of the diradical to the <i>N</i>-<i>t</i>-butyl-<i>N</i>-oxidanide-2-amino­(iminonitroxide) radical anion (<b>3</b>) and finally produced the polymer-chain complex [Cu₂(hfac)₂·<b>3</b>₂·Cu­(hfac)₂]_<i>n</i>. The structures of these complexes were elucidated by X-ray analysis, and their magnetic properties were investigated in detail. The temperature dependence of χ_p<i>T</i> (χ_p: magnetic susceptibility) for [Mn­(hfac)₂·<b>1</b>] exhibited a strong antiferromagnetic interaction (<i>H</i> = −2<i>J<b>S</b></i>_<b>1</b>·<i><b>S</b></i>_<b>2</b>, <i>J</i>/<i>k</i>_B = −217 K) between the Mn­(II) spin (<i>S</i> = 5/2) and the diradical <b>1</b> spin (<i>S</i> = 1). However, the χ_p<i>T</i>–<i>T</i> plots for [Cu₂(hfac)₂·<b>3</b>₂·Cu­(hfac)₂]_<i>n</i> indicated the presence of several magnetic interactions: a large ferromagnetic interaction (<i>J</i>/<i>k</i>_B = 510 K) between iminonitroxide <b>3</b> and the imino-coordinating Cu­(II) atom, a moderately large ferromagnetic interaction (<i>J</i>/<i>k</i>_B = 58 K) between the iminonitroxide and (iminonitroxide oxygen)-coordinating Cu­(hfac)₂, and a weak antiferromagnetic interaction (<i>J</i>/<i>k</i>_B = −1.4 K) between the two Cu­(hfac)-<b>3</b> moieties within a Cu₂O₂ square

Additional file 4: Figure S4. of Rapid, precise quantification of bacterial cellular dimensions across a genomic-scale knockout library

Morphological analysis of the Keio collection reveals correlations between cell width and intracellular width variability. Contours from cells from each Keio deletion strain were extracted from images acquired from the NBRP repository and used to compute the mean width and width profile across each cell. For each cell, we then computed the standard deviation of the width profile divided by the mean width to obtain the intracellular width variability. White circles and error bars were obtained by binning strains by mean width; blue lines are the fit to binned averages. R is Pearson’s correlation coefficient; p-value was computed with Student’s t-test. (PDF 111 kb